WO2011012132A2

WO2011012132A2 - Permanent magnet rotor

Info

Publication number: WO2011012132A2
Application number: PCT/DE2010/075070
Authority: WO
Inventors: Joachim Sabinski; Hans Kuss; Konrad Kadletz
Original assignee: Joachim Sabinski; Hans Kuss
Priority date: 2009-07-29
Filing date: 2010-07-29
Publication date: 2011-02-03
Also published as: WO2011012132A3; DE102009026287A1; EP2471159A2

Abstract

The invention is based on the aim of realizing modifiable permanently excited rotor assemblies having a tangential arrangement of the permanent magnets for greatly differing axial heights, rotational speeds, and mechanical and electromagnetic loads, said rotor assemblies being simple to produce, and of achieving improved possibilities compared to the prior art for further minimizing losses and for realizing high mechanical strengths of the rotor, and in particular of enabling the development of an approximately sinusoidal course of the pole field and a reduction of harmonics. Openings for fastening elements for non-magnetic pole gap anchors (2.1 to 2.13) are provided on a main magnetic circuit body (5.2), the permanent magnets (1) lie flat against the outsides of the main magnetic circuit body (5.2) and are locked on the main magnetic circuit body (5.2) by specially formed pole shoes (5.1) and pole gap anchors (2.1 to 2.13) retaining said pole shoes (5.1), wherein the pole gap anchors (2.1 to 2.13), the pole shoes (5.1), and the main magnetic circuit body (5.2) form groove areas, in which the permanent magnets (1) are arranged in an insulated or non-insulated manner. The field of application of the invention relates to rotating electric machine construction.

Description

Permanent magnet Laufer

The invention relates to permanent-magnet internal rotor and

External rotor for electrical machines with protected

arranged, approximately tangentially aligned

Permanent magnets with radial alignment of the magnetic poles. The invention is assigned to the category of permanent magnet machines which have a buried, ie protected, arrangement of the magnets in the magnetic circuit. This excludes demagnetization of the magnets even for extreme operating states.

The prior art is characterized by the following writings

characterized. In the document EP 1926196 A2, a permanent-magnet internal rotor is described, which is of the

Läufererblechpaket a Schenkelpolläufers with punched out poles and pole gaps. The excitation is secured against the electrical excitation by means of permanent magnets. The Läufererblechpaket therefore has modified smaller pole gaps and closed grooves in the poles for

Recording the permanent magnets. However, the closed grooves in the pole condition, since the rotor plates completely off

Ferromagnetic material consist, shorting bars

between the poles, as well as to the pole gaps. The magnetic field of the pole is reduced by the portions of the stray field over the ferromagnetic poles of the pole between the poles, resulting in a reduction of machine parameters. This runner design is not suitable for high

Circumferential speeds or for receiving high

Centrifugal forces.

In the US-A-6034459 A a permanent magnet dynamo-electric machine is described as a drive for a motor vehicle with iron cores of the rotor and the stator, which has tangentially arranged permanent magnets in the rotor. However, the closed grooves in the pole condition, since the Rotor sheets made entirely of ferromagnetic material

short-circuit bridges between the poles, as well as to the pole gaps. The magnetic field of the pole is reduced by the proportions of the stray field via the ferromagnetic

Pole gaps between the poles, resulting in a reduction of machine parameters.

In the document DE 103 09 776 A1 and DE 60 2006 000 475 T2, the laminated cores of the ferromagnetic rotor consist of circular blanks with a slightly wavy outer contour, in the region of the magnets with pronounced pole curvature and in the pole gaps with a slight counter-curvature. The grooves for receiving the permanent magnets have tapered to the pole gaps hollow sections, which are so a magnetic

Short circuit between adjacent poles to prevent. However, this can not be completely ruled out, as between the extended grooves narrow ferromagnetic webs, in extension to the pole head out. This also leads to reduced machine parameters. However, these rotor designs are only executable for smaller machines and not suitable for high

Circumferential speeds or for receiving high

Centrifugal forces. US 4 464 596 A describes a permanent magnet rotor with several sections. The permanent magnets have radially oriented magnetic poles and are rod or

plate-shaped. Between the permanent magnets and in the air gap, a pole piece is arranged, which consists of a

Sheet package exists. The laminated core is welded to a non-magnetic insert or positively connected thereto. The non-magnetic insert separates the permanent magnets from each other and is bolted to the rotor shaft. The screw connection of the non-magnetic

Insertion is complex, brings magnetic inhomogeneities and a loss of strength in the rotor and holds the Uncertainty of a loosening of the screw connection in itself. The rod-shaped or plate-shaped permanent magnets allow no influence on the pole field, whereby no reduction of harmonics can take place.

The invention is based on the object modifiable permanent-magnet rotor assemblies with tangential arrangement of the permanent magnets for a variety of shaft heights,

Speeds and mechanical and electromagnetic

To realize stresses, compared to the prior art improved possibilities for further minimization of losses and for the realization of high mechanical

Strengths of the runner to achieve.

US 2008/0088194 A1 discloses a permanent magnet rotor which consists of a laminated core in which permanent magnets are embedded. One embodiment described provides that they form a common pole

Permanent magnets by non-magnetic, I-shaped elements, used in T-shaped recesses in

Magnetic circuit main body and pole piece, are separated from each other. A high installation effort is thereby avoided by the magnetic body forming laminations of whole

Sheet metal discs are made, which are pushed onto the rotor shaft and the permanent magnets in their interior in

Keep recesses. The disadvantage here are pole gaps, which are isolated with air and where a low

Material width of a web between permanent magnet and pole gap can expect a low radial load capacity of the rotor, since the web is the radial load of the

Has to take permanent magnets. Despite the low

Material width of the web creates this material bridge a magnetically conductive connection between the South Pole and North Pole, resulting in losses. Again, rod-shaped or plate-shaped permanent magnets allow no influence on the pole field, which also reduces the formation of harmonics, a homogenization of the Torque on the angular position of the rotor relative to the stator and thus overall improved smoothness can not be done. In US Pat. No. 3,169,203 A, a square-wave generator is proposed whose rotor has T-shaped permanent magnets which are arranged in a protected and recessed manner. The permanent magnets are arranged around a polygonal core made of electric iron. Between

Permanent magnets is a potting compound made of epoxy resin with aluminum filling. Compared to the air gap, the permanent magnets are shielded by soft iron shoes, formed from a laminated core. A shallow groove in the irons shoes is used to hold the magnets

Potting compound is held by a rivet. The

Although shown solution dispenses with a Ver screw for mounting the rotor, however, the radial forces caused by the rotation of the rotor are caused solely by the

Potting compound or they received supporting hollow rivet. A high load due to high speeds therefore does not withstand the rotor. Furthermore, in this way and with the described arrangement of permanent magnets and soft iron shoes, although the formation of a square wave is possible according to the task, but not a uniform

Sine function.

Speeds and mechanical and electromagnetic

To realize stresses that are easy to manufacture, compared to the prior art improved ways to further minimize losses and to achieve high mechanical strength of the rotor to achieve and in particular the formation of an approximately sinusoidal Course of Polfeldes, as well as a reduction of

Harmonics, allows.

The object of the invention is achieved by a

Permanent magnetic rotor with recessed and protected, approximately tangentially arranged permanent magnet with radial polarity, wherein at least one ferromagnetic

Magnetic circuit main body and ferromagnetic pole pieces

directly with permanent magnets and nonmagnetic

Pollückankern positively connected and the

Pollückanker and the permanent magnets in the way

are formed so that the permanent magnet rotor the

Air gap field shape can be influenced and in a predetermined form and intensity, in particular with an approximately sinusoidal shape, can be formed. The pole anchor will be

held positively in the magnetic circuit main body and take, by their anchor shape at their opposite ends of the pole pieces and secure them in position. It is particularly advantageous that the pole shoes do not experience any weakening of their cross-section, since channels or bores for their stiffening or for assembly, the setting of

Polschuhbleche, are not required. Because channels and

Holes omitted, it does not come to inhomogeneities of the magnetic field in and on the pole piece. At the end of the pole piece the pole back anchors engage in a recess in this. While the pole pieces are preferably made of a ferromagnetic material, the material of the pole back anchors is non-magnetic. In the area in the pole piece and

Interlock pole anchor is therefore one

weakened permeability present, the magnetic field lines penetrate the area partially, but will be

partially distracted. By appropriate shaping of the transition region and the selection of the material thicknesses of the ferromagnetic and the non-magnetic material with respect to the field lines, the intensity of the magnetic field can thus be controlled. This can be done in the peripheral areas of the Polschuhs in a particularly advantageous manner the

Set the intensity curve of the magnetic field and produce, for example, a nearly sinusoidal intensity curve. In addition, the course of the magnetic flux density is homogenized along the armature circulation. At the same time, by the

Design of the permanent magnet rotor, the pole shoes have an unattenuated and in one embodiment in the region of the highest bending moment additionally reinforced cross-section, achieved a high mechanical strength and rigidity against deformation. Thus, in use very high engine speeds and a small air gap between the

Permanent magnetic rotor and the stator can be achieved. The permanent magnets, which are preferably arranged in the region between the magnetic circuit main body and the pole shoe, in a particularly preferred embodiment have a shape which is approximately adapted to the radius of the permanent magnet rotor.

In one of the embodiments of the invention, the

Magnetic circuit main body and / or the pole piece and / or the pole eye anchor each formed from a laminated core and therein recesses provided which receive the permanent magnets.

Furthermore, with the layered structure of the

Pollückenankers the ability to produce from layer to layer changing magnetic properties in the transition region between pole piece and pole anchor. This results in a particularly uniform transition region and a smooth course of the isolines of the intensity of the magnetic field at the edge regions of the pole shoes towards the pole gaps. The pole pieces have recesses which are for

Magnetkreisgrundkörper are aligned, and the

Magnetic circuit main body has recesses in the direction of the pole pieces. These recesses are all in one

Design up to the pole anchor, but in alternative embodiments, also within the Magnetkreisgrundkörpers and / or the pole piece be included, and correspond to the composite

Permanent magnetic rotor in such a way that therein

Permanent magnets are accommodated.

In an advantageous embodiment of the invention, the magnetic circuit main body and the pole piece together

stacked circular blanks formed and the pole anchor are also used as laminations in recesses of the circular blanks. The advantage of this embodiment lies in the particularly simple production, since magnetic circuit main body and pole shoes are constructed in one operation. Of the

Connecting bridge between the area of

The magnetic circuit main body and the region of the pole shoes are made so thin that it only carries the loads during assembly. As a result, losses caused by the

magnetic flux between the two poles of the

Permanent magnets, which takes place via the connecting web, minimized. The connecting bridge is used only during assembly with its carrying properties, as the

Polleckanker ensure mechanical strength during operation. This happens in such a way that the pole back anchors with the area of the magnetic circuit main body and the area of

Pole shoes are each positively connected. The massive pole anchor, the later in the laminated core and the existing therein recesses for the pole anchor

are introduced, are advantageously shrunk.

As a result, a particularly high strength of the laminated core, which give the pole-back anchors this in the axial direction, and at the same time the power line in the radial

Direction of the pole pieces reached on the magnetic circuit main body.

It is advantageous if a plane of the laminated core consists of an electrical sheet with the magnetic circuit main body with recesses, wherein in the recesses part of a Pollückankers engages and thus with the

Magnetkreisgrundkörper are positively connected and a further part of the pole eye anchor is disposed in a recess of a pole piece and between the with the

Pollückanker assembled magnetic circuit main body and

Pole shoe forms a recess in which later at least one permanent magnet is provided.

It is also advantageous if the laminated core of at least two alternately stacked arranged variants of

Polschuhs is formed, wherein at least two differently shaped recesses are formed with preferably open contour, in which the at least two different, the recesses correspondingly shaped embodiments of

Pollückenankers are arranged. Pollückanker and pole shoes grab because of their corresponding forms so

into each other, that a positive connection is created. Two different variants, so the preferred one

Embodiment, are used alternately. Alternatively, however, it is envisaged to use a single embodiment or more than two embodiments. From the use of different embodiments, in alternation

stacked one another results in the formation of one with respect to the intensities of the magnetic field lines

balanced transition area, as the preferred

Embodiments in the transition region different

Have permeability.

A development of the invention provides that the

Sheet metal stack of one stacked in the change of pages

arranged asymmetrical configuration of the pole piece and the pole eye anchor, wherein recesses are arranged at both distal ends of the pole piece, in which the at least two differently shaped, the recesses corresponding formations of Pollückenankers are arranged. The particular advantage of this variant is that only a single form of Polschuhblechen and a single form of pole core anchors is used, although the position of the positive connection between the two elements at the periphery of the permanent magnet rotor changes from layer to layer. This is achieved by the asymmetric structure, in particular the pole anchor, which are mounted layer by layer from different sides. This gives the same advantages in terms of

achieved magnetic properties of the transition region as in the previous embodiments. However, only one shape and thus only one punching tool for the production of the sheets for the pole pieces and the

Pollückanker needed and thus the production strong

simplified and cheaper.

According to a particularly advantageous embodiment, the approximately tangentially arranged in the permanent magnet rotor permanent magnets for each pole of at least two, separated by a spacer element or a distance aid

Permanent magnets formed. The separation of the magnets prevents their short circuit in terms of the magnetic field, increase the magnetic surface, as well as the

End faces of the permanent magnet emerges from a pole field, and thus contributes to an amplification of the magnetic field as a whole. It is therefore particularly favorable if the separation takes place in the middle of the pole. As spacers or spacers are preferably electrically insulating materials in question, the next obligatory amagnetic properties

exhibit .

It is associated with special benefits if that

at least one spacer element is designed as a pole shoe anchor, the pole piece with the magnetic circuit main body

mechanically connecting. These advantages are particularly important when it comes to a very large pole piece, which has to absorb strong radial loads during operation. Its load capacity can be determined by the arrangement

improve at least one Polschuhankers that mechanically connects the pole piece with the magnetic circuit main body.

Such a mechanical connection is particularly preferably designed as a positive connection, for example by an I-shaped pole shoe anchor. If only a single Polschuhanker provided in the pole piece, this is preferably arranged in the middle of the pole piece, since here is the

Advantages of a centrally arranged spacer element and arranged in the middle Polschuhankers complement in a particularly favorable manner, especially since in the middle of the highest bending moment occurs in the pole piece. But it is also envisaged to use more than one Polschuhanker on a pole piece, especially if they also magnetically separate more than two permanent magnets by their property as spacers.

It has been shown that special advantages result from a ceramic insulation of the permanent magnets. Because the

Permanent magnets in direct contact with the

Magnetic circuit main body, the pole shoes and the

Pollückenankern are in the interest of one

Avoidance of eddy currents requires electrical isolation. Otherwise, the existing to avoid eddy currents from layered sheets elements would be electrically connected to each other and the effect of electrical isolation, which should avoid eddy currents in the entire element would be repealed. Therefore, an insulation of permanent magnets, for example by a paint, is advantageous and known. The isolation by a ceramic coating, however, brings with it special advantages. A ceramic insulation has a smaller layer thickness than alternative solutions, for example a lacquer, so that the air gap inevitably resulting from the insulating layer becomes smaller towards the pole piece and the transition of the magnetic flux from the permanent magnet into the pole shoe is improved. Furthermore, a ceramic coating is more resistant to mechanical damage, so that mounting restrictions and extra care during assembly are not required. This simplifies assembly.

According to an advantageous development of the solution according to the invention, the poles are in the region of the pole center

disproportionately reinforced Polfeld, caused by additional permanent magnets in the pole center and / or an accumulation of material in the permanent magnet in the pole center and / or an increase in the surface of the permanent magnet in the pole center on. It is desirable that in the middle of each pole piece there is a particularly strong pole field to generate at this point a maximum torque on the permanent magnet rotor. An alternative solution provides, however, two of each

to combine constructive measures. In another alternative, all three constructive measures are linked together.

A first constructive measure is a

to arrange additional magnet in the Polmitte, so that in this area an amplification of the magnetic field. An advantage of this solution is in particular in the

Simplicity, since in the particularly preferred embodiment, in each case the same type of permanent magnet is used and these permanent magnets are also easy to produce, since they are curved, but of uniform material thickness. A second design measure concerns a

Material accumulation in the permanent magnet in the middle of the pole. The particularly preferred embodiment of the second

constructive measure provides permanent magnets, which are curved and whose thickness changes across the width. The respective wider narrow sides of the two permanent magnets to be mounted are according to the preferred

Embodiments separated by spacers or Distance elements, mounted against each other. This results in this area, which in the most preferred

Design also marks the center of the pole piece, a material accumulation of magnetically active material. This results in a permanent magnet of greater thickness. This has a stronger magnetic field in the area of thickening. The curvature of the permanent magnets to the axis of

Permanentmagnetläufer towards leads to an increase in the magnetically active surface, which particularly advantageous to a reinforcement of the pole field, in particular in the region of the Polmitte, leads.

The pole shoes are separated by pole gaps. In conventional, known pole shoes, the magnetic flux breaks off directly at the end of the pole piece. From this

result, as already mentioned in the assessment of the prior art, unfavorable effects, in particular

cause mechanical and electrical vibrations, stress the material and overall unfavorable to the

Running characteristics of one with such an anchor

equipped electric motor. According to the invention, a transition region is provided to overcome these disadvantages, which in the particularly preferred embodiment, an approximately sinusoidal drop in the magnetic flux between the center of the pole piece and the center of the pole piece

Pollückenankers generated. Pollückanker and pole shoes attack each other in such a way that in the direction of the

magnetic flux overlapping and in the particularly preferred embodiment additionally interlocking materials with opposite properties under the influence of magnetic fields, ferromagnetic and non-magnetic

Properties, to form the transition area. in the

Transition region, the magnetic properties of ferromagnetic increase at the beginning of the transition region

non-magnetic at the end of the transition region. In a further particularly preferred embodiments, this is Waste sinusoidal, but other possibilities for the design of the transition area are provided. Thus, for example, a less hard drop of Polfeldes be generated by appropriate coverage of the materials.

To compensate for inhomogeneities in the material and assembly inaccuracies, it has proved to be particularly advantageous

proved, at least alternately, different from

Layer to layer in the laminated core, the properties of the

Change transition area. This results in a particularly homogeneous embodiment of the compensatory effects of

Transitional area with regard to the approximation of the

magnetic flux between the area of the pole piece and the area of the pole eye anchor.

The object of the invention is further achieved by a method for mounting a permanent magnet rotor with recessed and protected, approximately tangentially arranged permanent magnet with radial polarity, wherein the

ferromagnetic magnetic circuit main body and the

ferromagnetic pole pieces are positively connected directly to the non-magnetic pole-back anchors, wherein the magnetic circuit main body and / or the non-magnetic

Pole anchor z. B. by setting mandrels and / or setting strips of individual sheets are constructed. In the preferred embodiment of the method according to the invention, the ferromagnetic magnetic circuit main body, the non-magnetic pole-back armature and the ferromagnetic pole shoes

set one after another layer by layer.

Alternatively, the structure of the

ferromagnetic magnetic circuit main body using

Setting mandrels take place and then in the resulting recess for receiving the non-magnetic polypole anchor of the

Pollückanker layer by layer together with the ferromagnetic pole piece or be mounted immediately after this.

A particular embodiment provides that the

Permanent Magnetic Rotor learns from the prior art known skewing that it is twisted about its axis. Here baskets are used. This is done from layer to layer, an offset in the direction of the skew or torsion of the permanent magnet rotor.

According to one embodiment of the method according to the invention, the permanent magnets between the

Magnetic circuit main body, the pole piece and the pole back anchors formed recess used. It is the

prefabricated, one-piece pole anchor so between

Magnetic circuit main body and pole piece used that it connects both elements both form-fitting, as well

positively clamped against each other. This is achieved in that the pole anchor is pressed into the recesses provided for him and the bridge of the

Pollückankers absorbs the resulting traction. This results in a bias that already acts against an occurring during operation, increasing at higher speed radial voltage in the permanent magnet rotor. This will be a radial

Elongation of the permanent magnet rotor prevents or reduces, and thus the air gap between the permanent magnet rotor and stator can be reduced as well as a higher speed

be achieved. The onset of the permanent magnets is advantageously carried out using spacers, z. B. hard tissue. By the

Use of these spacers is a minor

Spacing between the permanent magnet to be mounted and other permanent magnets already mounted. Overall, the present invention has the special

Advantage on that the permanent magnet rotor for high

Circulation speeds is suitable and that around the

Permanent magnetic rotor, in particular over the pole pieces of the individual poles, constructed air gap field in its shape and

Expression can largely be adjusted according to the specifications, in particular while avoiding hard jumps in the course of

Field strength. This results in a substantial avoidance of

Harmonics and thus a reduction in the heating of a permanent magnet rotor according to the invention

equipped electric motor, avoiding additional

Vibrations in the mechanical area and the avoidance of vibration-based feedback on the

Electric energy network.

The invention will be explained in more detail with reference to the drawing.

Show it:

Fig. 1 shows a permanent magnet excited rotor with a

square cross section of the magnetic circuit body with

a variety of pole shoes, Pollückenankern and

Polschuhankern,

Fig. 2 shows a permanent magnet excited rotor with a

Hexagonal cross-section of the magnetic circuit body with

most different pole shoes, Pollückenankern,

Polschuhankern and various

Permanent magnet arrangements,

Fig. 3 is a permanent magnet excited rotor with a

polygonal angular cross-section of the magnetic circuit body or with a magnetic circuit body with bulges and incisions and with a variety of pole shoes, pole back anchors,

Polschuhankern and various

Permanent magnet arrangements,

Fig. 4 schematically a halved view of a

Embodiment of an inventive Permanent magnet rotor with center thickened

Permanent magnets,

Fig. 5 shows schematically a halved view of a

Embodiment of an inventive

Permanent magnet rotor with centrally reinforced pole shoes,

Fig. 6 schematically a halved view of a

Embodiment of an inventive

Permanent magnet rotor with pole shoes connected to a magnetic circuit main body,

7a shows schematically a view of an embodiment of a permanent magnet rotor according to the invention with symmetrical

Pollückenankern and separated by spacers

Permanent magnets,

Fig. 7b schematically a halved view of a

Embodiment of an inventive

Permanent magnet rotor with wide pole back anchors and narrow pole shoes,

Fig. 7c schematically a halved view of a

Embodiment of an inventive

Permanent magnet rotor with narrow pole back anchors and wide pole shoes,

Fig. 7d schematically a halved view of a

Embodiment of an inventive

Permanent magnet rotor with wide pole back anchors and narrow pole shoes,

Fig. 8a schematically shows a view of an embodiment of a permanent magnet rotor according to the invention with asymmetric

Pollückenankern,

Fig. 8b schematically a halved view of a

Embodiment of an inventive

Permanentmagnetläufers with asymmetrical Pollückenankern with

Counterclockwise extension,

Fig. 8c schematically a halved view of a

Embodiment of an inventive

Permanentmagnetläufers with asymmetrical Pollückenankern with

Extension clockwise, Fig. 8d schematically a halved view of an embodiment of an inventive

Permanent magnet rotor with asymmetrical pole-end anchors with counterclockwise extension,

9 shows schematically a view of an embodiment of a permanent magnet rotor according to the invention with additional permanent magnet,

10a is a quarter-view of an embodiment of a permanent magnet rotor according to the invention with a slanted construction,

Fig. 10b schematically a halved view of a

Embodiment of a first plane of a permanent magnet rotor according to the invention with a slanted construction,

Fig. 10c schematically a halved view of a

Embodiment of a plane of an inventive

Permanent magnetic rotor with a pitched construction, and

Fig. 10d schematically a halved view of a

Embodiment of a plane n of an inventive

Permanent magnetic rotor with bevelled structure.

The permanent magnet rotor has protected and sunk arranged, tangentially oriented permanent magnets 1, which lie in cavities or groove areas, which by a

Magnetic circuit body 5.2, are formed by pole anchor 2.1 to 2.13 and by pole shoes 5.1. The magnetic circuit body 5.2, the pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can have a wide variety of shapes. In a first embodiment, the

Magnetic circuit main body 5.2 in cross section square. At the four corners of the magnetic circuit body 5.2 recesses for fastening elements for the non-magnetic pole-back anchors 2.1 to 2.13 are provided. The permanent magnets 1 lie flat on the outer sides of the magnetic circuit main body 5.2. By specially shaped pole pieces 5.1 and this pole pieces holding 5.1 pole anchor 2.1 to 2.13 are the

Permanent magnets 1 on the magnetic circuit main body 5.2

locked. In through the pole anchor 2.1 to 2.13, the Polschuh 5.1 and the magnetic circuit base body 5.2 groove regions formed the permanent magnets 1 are isolated or not isolated. In another variant of the runner with a

square shape of the magnetic circuit main body 5.2 are at least two adjacent permanent magnets 1, the permanent magnets 1 and the pole pieces 5.1 between the permanent magnet 1 on each magnetic base body side by one or more doppel - 1 - shaped, non - magnetic

Polschuhanker 3.1 to 3.3 held. The pole shoe anchors 3.1 to 3.3 are in the pole piece 5.1 and in the magnetic circuit main body

5.2 anchored. The pole shoe anchors have 3.1 to 3.3

various forms, especially in the field of

Magnetic circuit main body 5.2, such. B. a pure double-T 3.1 or a dovetail shape 3.2 or an end with a threaded blind hole 3.3 at a hub-like

Embodiment 13 or in an external rotor variant. The double-1-shaped, non-magnetic pole shoe anchors 3.1 to

3.3 can also be replaced by non-magnetic screws through the pole piece 5.1 to a

dovetail shaped threaded hole in the

Magnetic base 5.2 rich and thus lock the pole piece 5.1 on the magnetic base 5.2.

In a variant of the runner with a hexagonal

Cross section are also provided at the corners recesses for fasteners for non-magnetic pole pole anchor 2.1 to 2.13. The already described non-magnetic pole shoe anchors 3.1 to 3.3 are available. On each outer side of the magnetic circuit main body 5.2 are two or more permanent magnets 1 flat against, over which more two or more permanent magnets 1 are arranged, separated by spacer elements 4 and by specially shaped pole pieces 5.1. Centered between the permanent magnets 1 on each Magnetic base body side lying double - 1 - shaped non - magnetic pole shoe anchors 3.1 to 3.3, in the pole piece 5.1 and in

Magnetic circuit main body 5.2 are anchored. The magnetic circuit main body 5.2 may also have a polygonal cross-section with recesses for fastening elements for non-magnetic pole back anchors 2.1 to 2.13. Between two pole bridge anchors 2.1 to 2.13, on the outside of the magnetic circuit main body 5.2 with different size of permanent magnets 1.1 in an arcuate arrangement with or without non-magnetic packing 8 between the

Permanent magnet 1 per rotor pole or the same size

Permanent magnets 1.2 in an arcuate arrangement with or without non-magnetic packing 8 between the permanent magnets 1 per rotor pole or at least two linearly adjacent permanent magnets 1 lie flat and by special

formed pole shoes 5.1 and this pole pieces 5.1 holding pole back anchors 2.1 to 2.5 are locked on the magnetic circuit body 5.2. The pole anchor 2.1 to 2.13, the

Pole shoes 5.1, possibly the non-magnetic, triangular-shaped packing 8 and the magnetic circuit body 5.2 also form groove areas in which the permanent magnets 1.1 and 1.2 are isolated or not isolated. With this constructive solution, machines can be realized with a number of poles equal to and greater than two.

The magnetic circuit main body 5.2 may also have a circular cross section in section. Again, here are

Recesses for fasteners for non-magnetic

Pollückanker provided 2.1 to 2.13, wherein between two pole anchor anchors 2.1 to 2.13 on the outside of

Magnetic circuit main body 5.2 arcuate permanent magnets 1 with or without spacers 4 between the

Permanent magnets 1 abut and by specially shaped pole pieces 5.1 and this pole pieces 5.1 holding pole anchor 2.1 to 2.13 and possibly non-magnetic pole shoe anchor 3.1 to 3.3 are locked on the magnetic circuit main body 5.2. The pole-back anchors 2.1 to 2.13, the pole shoes 5.1, the pole shoe anchors 3.1 to 3.3 and the magnetic circuit main body

5.2 form groove regions in which the permanent magnets 1 are isolated or not isolated and thus

Pole numbers larger two are feasible.

The rotor shaft 9 can with bulges 9.1 and / or

Sections 9.2 be provided and the magnetic circuit main body 5.2 may have a necked body, as sintered or as a cast body complementary bulges and cuts. As a result, are kept very flat

Magnetic circuit main body 5.2 possible. On the outside of the magnetic circuit main body 5.2 are two permanent magnets 1 in a straight line arrangement per rotor pole, separated by an amagnetic spacer element 4, flat fitting. By specially shaped pole shoes 5.1 and this pole pieces 5.1 holding pole back anchor 2.13, the permanent magnets 1 are locked on the magnetic circuit body 5.2.

The pole-back anchors 2.1 to 2.13 can be made of insulated, non-insulated, set, non-magnetic sheets or of solid non-magnetic materials, such as non-magnetic or non-magnetic non-magnetic

Materials such as fiber-reinforced high-performance plastics with composite material.

At pole anchor 2.1. to 2.12 in a lamellae embodiment are preferably setters 7.1 to 7.5 in the form of bars 7.1 or flat 7.2, 7.4 and 7.5 of non-metallic high performance materials with reinforcing profiles inside or made of non-magnetic metallic materials 7.3

used and / or at the top of the air gap towards plastic wedges 11 to reduce weight and / or it will be enclosed non-magnetic metal inserts 12 for additional Stiffening of pole anchor 2.1 to 2.12 made of fiber-reinforced high-performance plastic used.

The pole-back anchors 2.1 to 2.13 and the pole shoes 5.1 can be designed as a whole or over the length as segments. The pole-back anchors 2.1 to 2.13 are preferably bolted to the magnetic circuit main body 5.2 by means of non-magnetic screws or embedded by means of non-magnetic wedges with embedded in Magnetkreisgrundkörper 5.2 threaded tine. In the case of a very flat magnetic circuit base body 5.2, the threaded hole strips can also be arranged in the rotor shaft 9 or a screw connection takes place directly in the rotor shaft 9. The pole shoes 5.1 advantageously have pole shoe reinforcements 6.1. up to 6.3 in the form of reinforced pole side edges 6.1, from bars 6.2 or from flat strips 6.3.

Preferably, the pole-back anchors 2.1 to 2.13 have a triangular shape in section, wherein a triangular point with a flattened shape is directed in the direction of the magnetic circuit main body 5.2 and the two other triangular points may have the most varied shapes. Eg as

Pole anchor2.1 with angled ends, which are in the

Polschuh 5.1 intervene, as Pollückanker 2.2 with

angled ends and the permanent magnet 1 adapted sides, as Pollückanker 2.3, with a wedge attachment to Magnetkreisgrundkörper 5.2, as Pollückanker 2.4 with angled ends with a multi-toothing on the pole piece 5.1, as Pollückenanker 2.5 with angled ends, which include the pole piece 5.1 from the outside and between Pollückenanker 2.5 and permanent magnet 1 a triangular,

have non-magnetic packing 8, as polling anchor anchor 2.6 with branched off below the ends anchoring lugs, as Pollückanker 2.7 with a continuous threaded hole, as Pollückenanker 2.8 with a threaded blind hole, as

Pollückanker 2.9 with a vogelschwingenar term form with a through hole with internal thread, the ends of which engage in parallel to the permanent magnets 1 grooves of the pole piece 5.1, as Pollückenanker 2.10 with a

vogelschwingenar term form with a through hole, the ends of which engage in parallel to the permanent magnet 1 grooves of the pole piece 5.1, as Pollückenanker 2.11 with a stair-like mounting aid with integrated

Dovetail, as pole back anchor 2.12 with angled ends and sides adapted to the permanent magnets 1 and additional mechanical attachment of the pole shoes, as pole back anchor 2.13 with an anchoring foot with a

Wedge Placement. The pole-back anchors 2.1, 2.2, 2.4 to 2.12 have screw connections to the magnetic circuit main body 5.2, with the variants of a United gland through the

Pole angle anchors 2.1, 2.2, 2.4, 2.5, 2.6, 2.10 to 2.12 in the direction of the magnetic circuit main body 5.2 and the variants of a Ver screw connection through the pole anchor 2.7 to 2.9 in

Direction of air gap. The pole-back anchors 2.3 and 2.13 are locked by wedges on the magnetic circuit main body 5.2.

The pole-back anchors 2.7 to 2.9 are preferably for

Internal rotor with a hub-like design or used for external rotor variants.

The pole-back anchors 2.1 to 2.13 and the pole-shoe anchors 3.1 to 3.3 advantageously have alignment and assembly aids 10.1 to 10.6 for alignment and anchoring thereto

complementary recesses in the magnetic circuit main body 5.2.

These installation and assembly aids can be cylindrical 10.1, dovetailed 10.2, triangular 10.3, 10.4 stepped, angled 10.5 or triangular trapezoidal 10.6, and can be used during installation

Pole anchor 2.1 to 2.13 to the desired location. The pole-back anchors 2.1 to 2.13 are designed so that any method of gluing and soaking for

Setting the permanent magnets 1 in the Nutbereichen, especially for processes with overpressure, can be realized, since the pole anchor 2.1 to 2.13 hold the seizing safely in the Nutbereichen and thus prevent leakage of this process in Aushär teprozess. The axial exit of the

Festsetzmittels from the Laufer face is secured by a sealing non-magnetic rotor end plate, which seals the entire pole gap area axially.

To realize he inventive AußenläuferVarianten is conceivable that virtually an internal rotor design

cut open and bent in the opposite direction to the circle. All design details are also applicable here.

The method of mounting the permanent magnet rotor with protected and sunk arranged, tangential

aligned permanent magnet 1 is effected by a

Screwing or wedging pole back anchors 2.1 to 2.13 on the magnetic circuit body 5.2, the same time

Lock pole shoes 5.1 on the magnetic circuit main body 5.2. In the constructive variant with pole shoe anchors 3.1 to 3.3, these are in the pole head 5.1 and in the

Magnetic base body 5.2 are taken, possibly with the aid of Ausl - ichtungs - and assembly aids 10.1 to 10.6. Subsequently, the permanent magnets are 1

inserted, wherein in a segment-like structure of

Polschuh 5.1 and the pole anchor 2.1 to 2.13 this

Mounting step by step according to the segments

he follows .

Figure 4 shows schematically a halved view of a

Embodiment of an inventive

Permanent Magnetic Rotor 20.1 with centrally thickened

Permanent magnet 1.3, wherein the thickness across the width B the permanent magnet 1.3 changes. The permanent magnets 1.3 are in a particularly preferred embodiment

executed in two parts. Between both parts is one

Spacer 4.2 arranged. By the distance aid 4.2 both permanent magnets 1.3 are kept at a distance, whereby the assembly is facilitated. Another division of the permanent magnets 1.3 is provided, for example, a tripartite division. In the illustrated embodiment, the permanent magnets 1.3 have a curvature that is stronger than the radius of the permanent magnet rotor 20.1 in the region of

Permanent magnets 1.3. The curvature of the permanent magnets 1.3 is used to reduce these in the middle of the pole piece 5.4 further in the direction of axis A. Another effect results from the curvature of the

Permanent magnets 1.3, making this a larger

Magnetic surface on the convex curved side and thus an overall stronger magnetic field compared to planar permanent magnets can be constructed.

The pole shoes 5.4 are held in position by the recesses 23.1 disposed at their ends. For this purpose, the pole-back anchors 2.14 engage in the recesses 23.1, which have a corresponding shape. A particular advantage of this solution is that the pole pieces 5.4 do not require any holes or receptacles that hold them in position during operation or during assembly. So can on disturbing

Built-in fasteners are omitted, which would affect the strength of the pole piece as well as its magnetic properties, in particular with regard to the formation of the magnetic field.

Pollückanker 2.14 continue to create a

positive connection between the magnetic circuit main body 21.1 and the pole pieces 5.4. This has the

Magnetic circuit main body 21.1 a recess 22.1 in the area of the pole anchor 2.14, in which engages the pole anchor 2.14. The embodiment shown here has between the lastaufnehmenden areas of the pole back anchor 2.14 and the magnetic circuit 21.1 Festetzer 7.6. These ensure a favorable load distribution and avoid too high compressive stresses in the material. This is particularly advantageous if the materials that were used for the production of the magnetic circuit main body 21.1 and / or the pole back anchor 2.14, were selected primarily because of their magnetic properties and the

mechanical properties behind it. The Festetzer 7.6 are executed in a preferred embodiment of the invention as wedges and serve according to the

Production of the laminated core to wedge this and fix it. Particularly preferred are the wedges

arranged tilted obliquely outward with respect to the symmetry axis of the pole anchor 2.14. In such an arrangement is a particularly favorable distribution at a load distribution

Wedging the pole anchor (2.14) against the

Magnetic circuit main body (21.1) before.

For the assembly of the permanent magnet rotor 20.1 according to the invention are composed of individual sheets

Magnetic circuit main body 22.1 and pole back anchor 2.14 assembled by means of setting mandrels. For this purpose, the circular blanks of the magnetic circuit main body 21.1 have recesses 10.8 and those of the pole shoe anchors 2.14 have recesses 10.7. For the

Pole shoes 5.4, as stated above, such

Recesses taking advantage of the special advantages of

Invention not required.

In an alternative embodiment, a solid one

Magnetic circuit main body 21.1 is provided. Another alternative embodiment provides massive pole back anchors 2.14. An alternative embodiment uses prefabricated

Pole shoes 5.4. These are designed as laminated cores.

The recess 23.1 in the pole shoes 5.4 further causes an overlap of the materials of pole anchor 2.14 and pole shoes 5.4 in a transition region between

Pole anchor 2.14 and pole shoes 5.4. This results in no abrupt termination of the magnetic field towards the pole gap, which is inventively filled by the pole anchor 2.14. Instead, a soft, in his

Intensity course by selection of kind and form of the

Cover adjustable transition. This avoids the formation of mechanical vibrations and harmonics or greatly reduces their formation.

The recess 23.1, in the special embodiment, has a direction of rotation of the permanent magnet rotor 20.1

acute-angled shape. In other embodiments, other cross-sectional shapes of the recess 23.1 are provided, such as rounded or polygonal cross-sectional shapes.

The pole anchor 2.14 also has a foot rest 24.1 in the area of the foot of the pole anchor 2.15

receiving recess 22.1. This is in the

illustrated embodiment of the invention rounded

executed. Other embodiments are provided as described below. This foot protection serves as

Orientation guide and ensures the exact alignment of the individual sheets in the laminated core.

FIG. 5 schematically shows a halved view of a

Embodiment of an inventive

Permanentmagnetläufers 20.2 with centrally reinforced pole pieces 5.5, which is characterized by a particularly strong curvature of

Permanent magnet 1.4 is enabled. These, in turn, in another embodiment, in two parts executed, bulge in the area of the middle of the pole shoe 5.5 to the axis A. This inevitably leads to an increase in the height of the pole piece 5.5, which in particular results in an improved strength in this region subject to high stress on bending.

The arched to the axis A permanent magnets 1.4 also have an enlarged area. This surface enlargement is particularly strong in the middle of the pole piece 5.5, whereby a very strong magnetic field is produced in this area in a particularly advantageous manner.

Another alternative, not shown here

Embodiment sees a combination of domed

Permanent magnets with locally, in particular centrally, thickened permanent magnets before. In the embodiment of this variant, the permanent magnets are curved approximately in Polmitte to the axis and at the same time significantly thicker than at the ends that point to the edge of the pole. This results in a greater material thickness and at the same time a larger one

Magnetic surface in the middle of the pole.

The pole piece 5.5 is replaced by one in its area

located recess 23.2, in which a pole anchor 2.15 engages held. For mounting the pole-back anchor 2.15 has these recesses 10.7, which are designed in the embodiment as circular holes on. Due to the shape of the shaft receiving 28 separate recesses for a setting mandrel in the magnetic circuit 21.2 are not required in the illustrated embodiment. Of the

Pole-back anchor 2.15 also has a foot rest 24.2 in the area of the recess 22.2 receiving the foot of the pole-back anchor 2.15. This is shown in the

Embodiment formed at an acute angle. Other contours are provided in alternative embodiments, such as polygonal or rounded contours. FIG. 6 schematically shows a halved view of one

Embodiment of a permanent magnet rotor 20.3 with a magnetic circuit main body 21.3 and connected thereto

Pole shoes 5.6. The connection consists in a web 25 which is arranged in the region of the pole gaps. The pole gaps are filled in by a pole anchor 2.16. The

Permanent magnets 1.4, as shown in Figure 2, curved, allow the pole pieces 5.6 a central

Reinforcement and cause an enlarged magnetic surface.

The webs 25 are made very narrow, give the

Connection between magnetic circuit main body 21.3 and

Pole shoes 5.6 no mechanical function during operation. Rather, they serve only the cohesion of

Magnetic circuit main body 21.3 and pole shoes 5.6 during assembly, i. they represent an assembly aid.

The strength is achieved by the pole back anchor 2.16, both in the magnetic circuit body 21.3 and in

Pole 5.6 is anchored. While in the particular

preferred embodiment of the magnetic circuit main body 21.3 and pole pieces 5.6 are constructed nested, the pole anchor 2.16 is made solid. This is preferably in the

provided recess in the magnetic circuit main body 21.3 and shrunk into the materially connected to this pole pieces 5.6. It comes to a press fit

Press-fitting 26. As a result, a dual function of the invention develops in a particularly advantageous manner

Pollückankers 2.16, by this both the sheet stack in a direction along the axis A secures, as well as a firm connection between the magnetic circuit 21.3 and Polschuh 5.6 produced, in this embodiment, a bias is generated by the interference fit in Pollückanker 2.16, which at an axial load the yielding deformation of the permanent magnet rotor 20.3 counteracts. The pole-back anchor 2.16 is preferably made solid with a corrugated surface to the air gap between permanent magnet rotor 20.3 and stator out. This allows high speeds of the permanent magnet rotor 20.3 in operation. In addition to a massive version of the pole back anchor 2.16 is provided in an alternative embodiment that this is carried out laminated. The outer surfaces can be ground here.

FIG. 7a schematically shows a view of an embodiment of a permanent magnet rotor 20.4 with symmetrical

Pole-back anchors 2.17 and by spacers 4.1

separated permanent magnets 1.5. In the illustrated, particularly preferred embodiment, two different types of pole-back anchors 2.17 are used. While both species are in the area of im

Magnetic base body 21.4 anchored foot area does not differ from each other, is the pole anchor 2.17 in the recess 23.4 of the sheet of pole pieces 5.7

engaging head area symmetrically wider than the sheet metal of the pole anchor 2.17 ^N. In addition to a difference in width, other differences in the contour are provided. The associated recess 23.4 in the pole piece 5.7 must then have a corresponding counter-shape.

In the illustrated embodiment of the permanent-magnet rotor 20.4, the pole-back anchors 2.17 and the

corresponding pole shoes 5.7 laminated performed and the two different variants of both elements each arranged in alternating layers one above the other. Alternatively, instead of alternating layering, the

Summary for groups of sheets, for example, two or more sheets of Pollückankers 2.17 and then provided two or more sheets of Pollückankers 2.17 ^N. For assembly, the pole-back anchors 2.17 recesses 10.7 and the magnetic circuit main body 21.4 recesses 10.8 for receiving each a setting mandrel on. Of the

Magnetic circuit main body 21.4 as well as the

Pollückenanker 2.17 and the pole pieces 5.7 and at the same time with this layer by layer composed. In one

alternative manufacturing methods will be the first

Magnetic circuit main body 21.4 completely assembled and then the pole anchor 2.17 and the pole pieces 5.7

used.

In the illustrated embodiment of the

Permanentmagnetläufers 20.4 used permanent magnets 1.5 are divided into two and have between the two parts, in the region of the center of the pole piece 5.7 a spacer 4.1. The spacer 4.1 causes a distance between the two permanent magnets 1.5 from each other, thus avoids an otherwise possible friction of the magnets each other during assembly. The spacer 4.1 must have non-magnetic properties. In addition to the two-part form shown here

Permanent magnets 1.5 other designs are provided, such as one-piece permanent magnets, which in a particularly preferred embodiment have a special shape and, for example, have a thickening in the middle or at the edge or a strong radius, the radius of the

Permanentmagnetläufers, have.

In a further embodiment of the permanent magnet rotor 20.4, the spacer elements 4.1 are formed I-shaped. The ends of the spacers 4.1 thus formed engage

correspondingly shaped recesses in the

Magnetic circuit main body 21.4 on the one hand and in the pole piece 5.7 on the other hand. This creates an additional positive connection between the two elements and give the pole piece 5.7 additionally in the middle of a stop, so that this at least three points, namely at both Ends in the recesses 23.4 and additionally held in the middle. This solution is especially true

advantageous if it is a permanent magnet rotor 20.4, which has a large diameter and at the same time a few poles. In such a case, each of the pole pieces 5.7 has a large length to cover the circumference of the permanent magnet rotor 20.4. When fixing the pole piece 5.7 at its two ends, in the recesses 23.4, and there

Successful recording of radial forces, for example, at high speeds, creates a high bending moment that the pole piece has 5.7 record. In order to minimize a resulting elastic deformation of the pole piece 5.7, the I-shaped design and engaging in the recess spacer elements 4.15 provide additional absorption of forces and their derivation in the magnetic circuit 21.4 basic body. By using such spacers 4.1 in the middle of the pole piece 5.4 permanent magnet rotor 20.4 can reach a higher speed with reduced air gap. Alternative embodiments are provided in which at each

Polschuh several I-shaped running, designed as a pole shoe spacers 4.1 are arranged.

Figure 7b shows schematically a halved view of a

Embodiment of a permanent magnet rotor 20.4 with wide pole back anchors 2.17 and narrow pole shoes 5.7. The

Illustrations in FIGS. 4b to 4d serve the purpose of FIG

Illustrating the alternate construction of the two

different types of sheets of pole anchor 2.17 or pole shoes 5.7. There are also others

Embodiments are provided that relate to this

distinguish that a different number of different elements is provided that they are layered in a different order, ie not alternately, but grouped in the laminated core and that this, in particular in the region of the recesses, in a different way

are structured. The pole-back anchors 2.17 shown in FIG. 7b have a broad head area, which requires very deep recesses 23.4 in the pole shoes 5.7. The pole shoes are correspondingly short 5.7. For assembly, the pole-back anchors 2.17 recesses 10.7 for receiving a setting mandrel on. The recesses 10.8 serve in the same purpose in the

Magnetic circuit main body 21.4. Figure 7c shows schematically a halved view of a

Embodiment of an inventive

Permanent Magnetic Rotor 20.4 with narrow plates of

Pole anchor 2.17 ^N and wide plates of pole shoes 5.7 ^N. This represents the embodiment shown in Figure 4b, the subsequent layer in the laminated core. Here, the plates of the pole anchor 2.17 ^{N have} a narrow head, so that they engage comparatively less deeply in the pole shoes 5.7 ^N and here in their recesses 23.4 ^N. Inevitably, the pole shoes 5.7 ^N thus have a greater length.

Figure 7d shows schematically a halved view of a

Embodiment of a permanent magnet rotor 20.4 with wide pole back anchors 2.17 ^N and narrow pole shoes 5.7 ^N. The

Representation corresponds to that shown in Figure 4b and

illustrates the alternating layer formation from the two different element groups in the laminated core in the

Assembly of permanent magnet rotor 20.4. Figure 8a shows schematically a view of an embodiment of a permanent magnet rotor 20.5 with asymmetric

Polling Anchors 2.19. The asymmetry is in the head of the pole anchor 2.19, where, for example, an extended head area to the left and when turning the

Polling anchor 2.19 in the way that he comes to rest on his other, the first opposite plane pointing to the right. The foot region of the pole back anchor 2.19 is designed symmetrically and fits into the recess 22.5 in the magnetic circuit main body 21.5 in one as well as in another position. The asymmetrical design of the pole anchor 2.19 makes it possible in an advantageous manner, with only a single element of an alternating construction with a

Change from layer to layer or even grouped in groups of layers to achieve. That's going to happen

allows the asymmetric pole anchor 2.19 to be alternately turned on one of its two sides and mounted in position.

Another advantage is that only one type of pole shoes 5.9 is used. These are also rotated from layer to layer, so that once the recess 23.6 with the clockwise end with the

Pollückanker 2.19 comes into engagement and another time the recess 23.7, also at the lying in the clockwise end of the pole piece 5.9, with the pole anchor 2.19 a

positive connection is received.

For mounting the recesses are 10.8 in

Magnetic circuit main body 21.5 received by a setting mandrel, not shown, while the recesses 10.7 of

Pollückenankers 2.19 be recorded in other, not shown, other setting thorns. A recording of the pole pieces 5.9 on setting mandrels does not take place because the pole pieces 5.9 arranged over their opposite distal

Recesses 23.6, 23.7 are kept safe both during assembly and during operation.

Figure 8b shows schematically a halved view of a

Embodiment of a permanent magnet rotor 20.5 with

asymmetric pole-back anchors 2.19 with an extension of the head portion, which is aligned in the figure counterclockwise as shown here. Opposite the head region facing away from the axis A, the pole-back anchor 2.19 has a foot region, which is aligned towards the axis A, anchored to the magnetic-circuit main body 21.5 and, in the preferred embodiment, radially symmetrical. The extension of the head of the pole back anchor 2.19 engages in a correspondingly recessed recess 23.7 of the pole piece 5.9. The pole piece 5.9 likewise has an asymmetry, since the recess 23.7 arranged at one end is correspondingly deeper

is executed as the recess 23.6 at the opposite end of the pole piece 5.9.

Figure 8c shows schematically a halved view of a

Embodiment of a permanent magnet rotor 20.5 with

asymmetric pole-back anchors 2.19 ^N with clockwise extension. In clockwise direction, the pole-back anchor 2.19 ^N now engages in the deeper recess 23.7 ^{N of} the pole shoe 5.9 ^N. Accordingly, both the pole-back anchor 2.19 and the pole shoes 5.9 ^N for the construction of the in Figure 5c

shown layer of the laminated core against the layer of the laminated core shown in Figure 5b, from which the

Permanentmagnetläufer 20.5 is constructed, each rotated by 180 degrees, ie in the other position, installed. Figure 8d shows schematically a halved view of a

Embodiment of a permanent magnet rotor 20.5 with

asymmetrical pole-back anchors 2.19 with counterclockwise extension. The representation corresponds to the one shown in FIG

Sheet metal packs from the same sheet metal parts for the pole anchor 2.19 and the pole shoes 5.9, each from layer to

Layer alternately once from one side and then from the other side, in the other position, to be mounted. Figure 9 shows schematically a view of an embodiment of a permanent magnet rotor 20.6 with additional Permanent magnet arrangement 1.7, 1.7 ^N , 1.8 in the middle of the pole piece. It is under the from the above

described embodiments known simple

Layer of permanent magnets 1.7 an additional layer of permanent magnets arranged 1.8. This is arranged according to the preferred embodiment in the direction of the axis A in a recess in the magnetic circuit main body 21.6 and consists per pole of a single permanent magnet 1.8. Alternative embodiments provide to arrange the additional permanent magnet 1.8 elsewhere,

for example, in an additional recess in the pole piece 5.10. It is also provided to assemble the permanent magnet 1.8 of two or more parts. According to the embodiment, because of their uniform

Thick easy-to-manufacture permanent magnets 1.7, 1.7 ^N , 1.8 used. It is particularly preferred if, between the permanent magnets 1.7, 1.7 ^N, a gap spaced apart by a spacer aid 4.2 is created, which is the assembly

facilitated as described above.

A pole shoe 2.20 again has an asymmetrical shape in the head area and is alternately mounted layer by layer in an alternating position. This is represented in FIG. 6 by invisible dashed lines, which represent the underlying layer mounted in another layer. The pole piece 5.10 is asymmetrically designed accordingly. FIG. 10a schematically shows a quarter-view of an embodiment of a permanent magnet rotor 20.7 with a slanted construction. A slanted construction of a

Permanentmagnetläufers 20.7 is known per se from the prior art. A skewing is achieved by the in the laminated core

subsequent layer is rotated relative to the previous layer by a small angular amount. In the present embodiment, which is further explained in Figures 7b to 7d, the skew of the

Permanentmagnetläufers 20.7 a total of 30 degrees with respect to the axis A, distributed on a laminated core of 800 sheets. Other bevels with a smaller or larger angle and a smaller or larger number of sheets in the

Sheet metal package are provided. The one shown in Figure 7a

Skew direction 27 corresponds to a skew in the counterclockwise direction. Alternatively, a skew in

Clock display provided. Due to the intended skew can be used for aligning and mounting the laminated core no more setting mandrels, as they can not be inserted into a helically deformed hole. Instead, in the particularly preferred embodiment of the method for producing a permanent magnet rotor 20.7, a setting basket is used which has setting racks. The setting strips are arranged in the basket and run on the inside or

Outer cylinder of the setting basket helical. The setting strips engage in corresponding recesses in the sheet metal parts to be mounted. Thus, the magnetic circuit main body 21.7 at least one recess 10.10, in which engages the setting bar. Correspondingly, the pole-back anchor 2.21 has a recess 10.9, which likewise corresponds to the setting bar on the setting basket, which is not shown, however, according to the prior art. The pole piece 5.11 does not require assembly aid by setting strips, but it engages with its recesses 23.8 and 23.9 in the pole anchor 2.21. The permanent magnets 1.7, 1.8 are by a

Insulation layer, in the most preferred Embodiment by a ceramic insulation layer 30, electrically insulated. A ceramic insulation offers over other types of insulation, for example by a paint, the advantage that it is particularly thin and also very hard, that is insensitive to damage during assembly is. Further advantages of a ceramic

Insulation consists in a very high heat resistance, which maintains its insulating properties even at high operating temperatures, and in an improved

Slipperiness, which simplifies the assembly

allows.

Between the permanent magnet 1.7 and the permanent magnet 1.8 a distance aid 3.4 is introduced. This serves to separate the two permanent magnets to facilitate

Mounting during installation of the permanent magnets 1.7, 1.8 in the recesses, which in the construction of the sheet stack between

Magnetic circuit main body 21.7, pole shoes 5.11 and

Pollückenanker 2.21 arise.

Figure 10b shows schematically a halved view of an embodiment of a first plane of a

Permanentmagnetläufers 20.7 with slanted construction. The pole anchor 2.21 are designed with asymmetrical head and have the recess 10.9, in which the setting strips engage in the alignment and assembly. A

corresponding recess 10.10 for a setting bar for

Alignment and assembly of the individual circular blanks of the

Sheet stack has the magnetic circuit main body 21.7.

FIG. 10c schematically shows a halved view of an embodiment of a plane of a permanent magnet rotor 20.7 with a skewed structure, where n is an even number and, after a number n / 2, exactly the case of alternating layers of the different variants (head extension of FIG

Pollückenankers 2.21 points counterclockwise or in Clockwise) opposite variant is visible. In the present exemplary embodiment, a total of 800 layers are provided in the laminated core of the complete permanent magnet rotor 20.7, so that FIG. 7c shows the layer number 399, in which the head extension of the pole back anchor 2.21 points in the clockwise direction.

The angle between the center lines 29 and 29 ^N already shows half the helix angle of in the illustrated

Embodiment 15 degrees, while the final

Helix angle of the permanent magnet rotor 20.7, as shown below in Figure 7d between the center lines 29 and 29 ^NN , is 30 degrees. FIG. 10d schematically shows a halved view of one

Embodiment of a plane n of a permanent magnet rotor 20.7 ^NN with a skewed structure. The level n is in

illustrated embodiments, the last level, the level 800, wherein for clarification of the total skew both the pole anchor 2.21 of the first level and the pole anchor 2.21 ^NN the last level, here the level 800, are shown. The degree of skew is further illustrated by the plane 29 centerline 29 and the plane 800 centerline 29 ^NN .

The recesses 10.8 are larger in alternative embodiments or designed as a slot, so that even with a skew of the laminated core this can be clamped. For clamping, a bolt is passed through the recess 10.8, for example, and the laminated core clamped. Compilation of the reference numerals

1, 1.1, 1.2. 1.4 to 1.8 - permanent magnet

2.1 to 2.17, 2.19 to 2.21 - pole anchor

3.1 to 3.3 - Pole anchors

4, 4.1 - Spacer

4,2, 4.3 - Distance aid

5.1, 5.4 to 5.7, 5.9 to 5.11 - Pole shoe

5.2, 21.1 to 21.21.7 - magnetic circuit main body

6.1 to 6.3 - Pole stiffeners

7.1 to 7.5 - Staller

8 - packing

9 - rotor shaft

9.1 - bulges of the rotor shaft

9.2 - Incisions of the rotor shaft

10.1 to 10.6 - installation and assembly aids

10.7 - recess setting mandrel pole anchor

10.8 - recess setting mandrel magnetic circuit main body

10.9 - recess setting bar pole anchor

10.10 - recess setting strip magnetic circuit main body

11 - plastic wedge

12 - coated, non-magnetic metal insert

13 - hub-like embodiment of the rotor 20.1 to 20.7 - permanent magnet rotor

21.1 to 21.7 - magnetic circuit main body

22.1 to 22.7 - recess magnetic circuit main body

23.1 to 23.4, 23.6 to 23.11 - recess pole piece

24.1 to 24.7 - Foot locking pole anchor

25 - footbridge

26 - Press fit

27 - helical direction

28 - Wave recording

29 - Centerline

30 - ceramic insulation

Claims

claims

1. permanent magnetic rotor rotating electrical machines with sunk and protected arranged, approximately tangentially oriented permanent magnet with radial alignment of the magnetic poles,

characterized ,

a ferromagnetic magnetic circuit main body (5.2, 21.1 to 21.7) and ferromagnetic pole shoes (5.1, 5.4 to 5.11) directly with permanent magnets (1.1 to 1.8) and

non-magnetic pole-back anchors (2.1 to 2.21), the pole-back anchors (2.1 to 2.21), the pole shoes (5.1, 5.4 to 5.11) and the magnetic circuit main body (5.2)

Form recesses in which the permanent magnets (1.1 to 1.8) are arranged, and the pole-back anchors (2.1 to 2.21) and the permanent magnets (1.1 to 1.8) in the manner

are formed so that a predetermined air gap field shape, in particular with an approximately sinusoidal course, can be formed around the permanent magnet rotor (20.1 to 20.7).

2. Permanent magnetic rotor according to claim 1,

characterized ,

that the magnetic circuit main body (5.2, 21.1 to 21.7) and the pole shoes (5.1, 5.4 to 5.11) directly with

Permanent magnets (1.1 to 1.8) and nonmagnetic

Pollückankern (2.1 to 2.21) are positively connected.

3. permanent magnet rotor according to claim 1 or 2,

characterized ,

on the outside of the magnetic circuit main body (5.2, 21.1 to 21.7) permanent magnets (1.1 to 1.8) in rectilinear or arcuate arrangement or arcuate permanent magnets (1.1 to 1.8) with a uniform thickness or varying from one to the other end thickness in an arcuate arrangement depending Runner pole lying flat on the

Magnetic circuit main body (5.2) are locked.

4. permanent magnet rotor according to one of claims 1 to 3, dadur ch gekennz e i chne t,

that the magnetic circuit main body (21.3) and the pole shoes (5.6) are executed together as a complete cut, wherein the sheet metal blank forming sheet metal blanks are formed so that the pole back anchors (2.16) in recesses (22.3) of the magnetic circuit main body (21.3) and the pole pieces (5.6) intervene.

5. permanent magnet rotor according to one of claims 1 to 3, dadur ch gekennz e i chne t,

that the pole shoes (5.7) are formed as a laminated core and the laminated core of a plurality of at least two differently shaped, stacked in alternation

arranged sheets are formed, wherein at least two differently shaped recesses (23.4, 23.4 ^N ) are provided in the sheets, in each of which one of

at least two different, the recesses (23.4, 23.4 ^N ) correspondingly shaped sheets of formed as a laminated core Pollückankers (2.17) are arranged.

6. permanent magnet rotor according to one of claims 1 to 3, dadur ch gekennz e i chne t,

in that the pole shoes (5.9, 5.10, 5.11) and the pole-back anchors (2.19 to 2.21) are formed as laminated cores of an asymmetrical configuration of the sheets of the pole shoes (5.9 to 5.11) and the sheets of the pole back anchor (2.19 to 2.21) stacked in alternating sides. are formed, where

Recesses (23.6 to 23.9) at both ends of the sheets of the pole piece (5.9 to 5.11) are arranged, in which the at least two differently shaped, the recesses (23.6 to 23.9) corresponding embodiments of

Pollückanker (2.19 to 2.21) are arranged.

7. permanent magnet rotor according to one of claims 1 to 3, characterized ,

that the pole shoes (5.1) by means of the non-positively,

in particular by screwing or wedging, on the

Magnetkreisgrundkörper (5.2) fixed pole back anchors (2.1 to 2.13) are locked.

8. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

that the approximately tangentially in the permanent magnet rotor (20.1 to 20.7) arranged permanent magnets (1.4 to 1.8) for each pole of at least two, by at least one

Distance element (4.1) or at least one spacer (4.2, 4.3) separate permanent magnet (1.3 to 1.8) are formed.

9. permanent magnet rotor according to one of the preceding

Claims,

characterized ,

that between the permanent magnets (1.1 to 1.8) an I-shaped non-magnetic pole shoe anchors (3.1 to 3.3) is arranged in the pole piece (5.1 to 5.11) and in

Magnetic circuit main body (5.2, 21.1 to 21.7) anchored and is designed so that it transmits a tensile stress from the pole piece (5.1 to 5.11) to the magnetic circuit main body (5.2, 21.1 to 21.7).

10. Permanent magnetic rotor according to one of the preceding claims,

characterized ,

that the permanent magnets (1.3 to 1.8) a ceramic

Isolation (30) have.

11. Permanent magnetic rotor according to one of the preceding claims,

characterized , the poles have an additional permanent magnet (1.8) and / or a permanent magnet (1.3) with an uneven thickness over its width (B) and / or an enlargement of the

effective surface of the permanent magnet (1.3, 1.4)

exhibit.

12. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

that designed as a laminated core magnetic circuit main body (21.7) recesses (10.10) for setting strips trained as laminated core pole anchor (2.21) recesses (10.9), the sheets in the laminations in a Schrägungsrichtung (27) each against each other by a minimum amount twisted layers one above the other

are arranged and the arcuate permanent magnets (1.7, 1.8) of uniform thickness in a circular arc segment-shaped

Recesses are arranged.

13. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

the permanent-magnetic rotor has, on at least one side, a sealing, non-magnetic rotor end plate which seals the entire pole gap region axially.

14. Permanent magnetic rotor according to one of the preceding claims,

characterized ,

that the pole anchor (2.1 to 2.13) and the pole shoe anchors (3.1 to 3.3) alignment and assembly aids (10.1 to 10.6) for alignment and anchoring in a complementary contour in the magnetic circuit main body (5.2) have.

15. Permanent magnetic rotor according to one of the preceding claims, characterized ,

that the pole shoes (5.1, 5.4 to 5.11) have pole shoe stiffeners (6.1 to 6.3) in the form of reinforced pole side edges (6.1), bars (6.2) or flat bars (6.3).

16. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

that the pole-tie anchors (2.1 to 2.21) in lattice

Setters (7.1 to 7.5) in the form of bars or sheets of non-metallic, high-performance materials with reinforcing profiles inside or made of non-magnetic metallic materials and / or at the top for

Air gap towards plastic wedges (11) and / or coated

non-magnetic metal inserts (12) for additional stiffening of the pole-back anchors (2.1 to 2.12) made of fiber-reinforced

Own high performance plastic.

17. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

that the permanent magnets (1.1 to 1.8) are non-magnetic

Have filler (8).

18. Permanent magnetic rotor according to one of the preceding

Claims,

characterized ,

a rotor shaft (9) forms part of a magnetic circuit.