CN104235036A - Heat radiation fan with balance function - Google Patents

Heat radiation fan with balance function Download PDF

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Publication number
CN104235036A
CN104235036A CN201310272094.3A CN201310272094A CN104235036A CN 104235036 A CN104235036 A CN 104235036A CN 201310272094 A CN201310272094 A CN 201310272094A CN 104235036 A CN104235036 A CN 104235036A
Authority
CN
China
Prior art keywords
substrate
radiation fan
permanent magnet
stator pack
counterbalance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310272094.3A
Other languages
Chinese (zh)
Other versions
CN104235036B (en
Inventor
洪银树
陈文官
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunonwealth Electric Machine Industry Co Ltd
Original Assignee
Sunonwealth Electric Machine Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sunonwealth Electric Machine Industry Co Ltd filed Critical Sunonwealth Electric Machine Industry Co Ltd
Publication of CN104235036A publication Critical patent/CN104235036A/en
Application granted granted Critical
Publication of CN104235036B publication Critical patent/CN104235036B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/662—Balancing of rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • F04D25/0613—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump the electric motor being of the inside-out type, i.e. the rotor is arranged radially outside a central stator
    • F04D25/064—Details of the rotor

Abstract

The invention relates to a heat radiation fan with a balance function, which comprises a fan frame, a stator set and a fan wheel. The fan frame comprises a balancing piece, the stator group comprises a substrate and a coil group, the fan wheel is rotatably combined with the shaft connecting part and is provided with a permanent magnet, and an air gap is formed between the permanent magnet and the coil group of the stator group; the permanent magnet of the fan wheel is provided with a magnetic attraction range, the magnetic attraction range is axially opposite to the balance piece, and the substrate is positioned between the permanent magnet and the balance piece and used for shielding at least one part of the magnetic attraction range; therefore, the problem that the magnetic attraction force generated by direct opposition between the permanent magnet and the balance piece is too large can be solved, so that the resistance of the fan wheel during rotation is reduced, and the effect of improving the operation quality of the cooling fan is achieved.

Description

The radiation fan of tool equilibrium function
Technical field
The invention relates to a kind of radiation fan, especially a kind ofly guarantee the radiation fan that impeller steadily rotates.
Background technique
The existing motor configuration with balancing patch, as TaiWan, China announces " Brushless DC motor structure " new patent case of No. 423760.Please refer to shown in Fig. 1, this existing motor 8 roughly comprises pedestal 81, stator 82, rotor 83 and a balancing patch 84.This pedestal 81 has a central siphon 811; This stator 82 is incorporated into the periphery wall of this central siphon 811; This rotor 83 is provided with axostylus axostyle 831 and a permanent magnet 832, and wherein this rotor 83 is by the rotatable central siphon 811 in conjunction with this pedestal 81 of this axostylus axostyle 831; This balancing patch 84 is made by magnetic conductive material, and this balancing patch 84 to be arranged on this pedestal 81 and to keep a magnetic spacing (G) with this permanent magnet 832, a magnetic effect can be formed between this balancing patch 84 and this permanent magnet 832, and then this rotor 83 can be impelled steadily to rotate.
When above-mentioned existing motor 8 is applied to radiation fan, though can guarantee that the impeller of this radiation fan steadily rotates by this balancing patch 84; But, also owing to being provided with balancing patch 84 between this pedestal 81 and this permanent magnet 832, cause this existing motor 8 to be difficult to again the overall axial height of reduction further; Therefore, this existing radiation fan of relative limit is designed to the feasibility of more compactization, and this balancing patch 84 sheathedly must be incorporated into the central siphon 811 of this pedestal 81 when assembling, also can cause the inconvenience in assembling.
Again, as TaiWan, China announces " motor and have the radiation fan of this motor " patent of invention case of No. I384732.Please refer to shown in Fig. 2, this existing motor 9 comprises counterbalance 91, stator 92 and a rotor 93.This counterbalance 91 is provided with axis part 911 and a magnet sensing part 912; This stator 92 is in conjunction with this counterbalance 91; This rotor 93 comprises rotatingshaft 931 and a permanent magnet 932, this rotatingshaft 931 in conjunction with this axis part 911, this permanent magnet 932 corresponding magnetic mutual to the magnet sensing part 912 of this counterbalance 91.Whereby, this counterbalance 91 can in order to maintain the balance rotating of this rotor 93.
When the existing motor 9 of above-mentioned another kind is applied to radiation fan, it is the fan frame pedestal directly replacing traditional heat-dissipating fan with counterbalance 91, therefore between this counterbalance 91 and permanent magnet 932 of this rotor 93, need not conventional balanced sheet be set again, effectively to reduce the overall axial height of this radiation fan, and hold concurrently can improve assembling convenience.But, the permanent magnet 932 of this existing motor 9 with between counterbalance 91 easily but because corresponding area is excessive and directly relative, cause this permanent magnet 932 excessive with counterbalance 91 axial magnetic suction between the two, when existing motor 9 is applied to radiation fan, this axial magnetic suction easily increases resistance when impeller rotates, and then affects the running quality of radiation fan.
Summary of the invention
Main purpose of the present invention is the radiation fan being to provide a kind of tool equilibrium function, in order to effectively to reduce the axial magnetic suction between permanent magnet and counterbalance.
For reaching aforementioned invention object, the radiation fan of tool equilibrium function of the present invention at least comprises a fan frame, stator group and an impeller.This fan frame comprises a counterbalance, and the outer periphery of this counterbalance are provided with an outer frame, and this outer frame is provided with a wind inlet and an exhaust outlet, and this counterbalance is provided with an axis part; This stator pack comprises a substrate and a coil groups; And this impeller comprises a central shaft and a permanent magnet, this central shaft is rotatably incorporated into this axis part, forms an air gap between this permanent magnet and coil groups of this stator pack; Wherein the permanent magnet of this impeller has an outer ring surface and an inner ring surface, a magnetic scope is formed between this outer ring surface and inner ring surface, this magnetic scope is axially relative with this counterbalance, the substrate of this stator pack between this permanent magnet and this counterbalance, in order to cover this magnetic scope at least partially.
Air gap between described permanent magnet and the coil groups of this stator pack is axial air-gap or radial air gap.
The outer periphery of the substrate of described stator pack are positioned at this magnetic scope or exceed this magnetic scope.
The substrate surface of described stator pack forms this coil groups, and this substrate is a circuit board, and this coil groups is electrically connected one drive circuit.
Described stator pack separately comprises at least one silicon steel plate and an insulation external member, and this substrate surface is provided with drive circuit to form a circuit substrate, and it is outside that this insulation external member is incorporated into this silicon steel plate, and this coil groups is wound in this insulation external member.
The outer periphery of the substrate of described stator pack are provided with relatively several breach.
The outer periphery of the substrate of described stator pack are provided with relatively several trimming.
The outer frame of described fan frame is in conjunction with a cover plate, and this cover plate is provided with a through hole, and this through hole is relative with the wind inlet of this outer frame.
By the radiation fan of above-mentioned tool equilibrium function, the substrate of this stator pack can cover this magnetic scope at least partially, in order to solve between this permanent magnet with this counterbalance because of the problem such as direct relative produced magnetic attraction is excessive, effectively to reduce resistance when this impeller rotates, and then reach the effect improving radiation fan running quality.
Accompanying drawing explanation
Fig. 1 is the assembled sectional view of the first existing motor.
Fig. 2 is the assembled sectional view of the existing motor of the second.
Fig. 3 is the three-dimensional exploded view of the radiation fan of the tool equilibrium function of the present invention first preferred embodiment.
Fig. 4 is the assembled sectional view of the radiation fan of the tool equilibrium function of the present invention first preferred embodiment.
Fig. 5 is the three-dimensional exploded view of the radiation fan of the tool equilibrium function of the present invention second preferred embodiment.
Fig. 6 is the assembled sectional view of the radiation fan of the tool equilibrium function of the present invention second preferred embodiment.
Fig. 7 is another better embodiment schematic top plan view of the substrate of the radiation fan of tool equilibrium function of the present invention.
Fig. 8 is the another better embodiment schematic top plan view of the substrate of the radiation fan of tool equilibrium function of the present invention.
Wherein:
(the present invention)
1 fan frame 11 counterbalance 111 assists wind inlet
12 outer frame 121 wind inlet 122 exhaust outlets
13 axis part 14 cover plate 141 through holes
2 stator pack 21 substrate 211 outer periphery
22 coil groups 3 impeller 31 central shafts
32 permanent magnet 321 outer ring surface 322 inner ring surfaces
4 stator pack 41 substrate 411 outer periphery
412 breach 413 trimming 42 silicon steel plates
43 insulation external member 44 coil groups D magnetic scopes
(prior art)
8 motor 81 pedestal 811 central siphons
82 stator 83 rotors
831 axostylus axostyle 832 permanent magnet 84 balancing patches
G magnetic spacing 9 motor 91 counterbalance
911 axis part 912 magnet sensing part 92 stators
93 rotor 931 rotatingshaft 932 permanent magnets.
Embodiment
For above-mentioned and other object of the present invention, feature and advantage can be become apparent, preferred embodiment of the present invention cited below particularly, and coordinate accompanying drawing, be described in detail below.
Please refer to shown in Fig. 3 and Fig. 4, the radiation fan of the tool equilibrium function of the present invention first preferred embodiment at least comprises a fan frame 1, stator group 2 and an impeller 3.This fan frame 1 is the frame structure that can import and derive air-flow, such as axial flow fan frame, centrifugal fan frame or horizontal convection fan frame etc., and in this preferred embodiment, this fan frame 1 is centrifugal fan frame; This stator pack 2 is incorporated into this fan frame 1 inside; This impeller 3 is rotatably incorporated into this stator pack 2, to drive this impeller 3 to rotate start by this stator pack 2.
Above-mentioned fan frame 1 can be various can for above-mentioned stator pack 2 and above-mentioned impeller 3 accommodating and for air-flow with axial direction import and radial direction derive hollow frame structure, this hollow frame structure can be the structural design of various geometrical shape, such as polygon, circle or oval etc.; In this preferred embodiment, disclosing this fan frame 1 is tetragonal frame structure.
Above-mentioned fan frame 1 mainly comprises a counterbalance 11, this counterbalance 11 be select can with the component of the mutual magnetic of a permanent magnet, such as: this counterbalance 11 can be metal sheet etc.; The outer periphery 211 of this counterbalance 11 are provided with an outer frame 12, and this outer frame 12 is provided with wind inlet 121 and an exhaust outlet 122, and in order to import and to derive air-flow, and this counterbalance 11 is provided with an axis part 13, combines for above-mentioned impeller 3.
Again, the outer frame 12 of above-mentioned fan frame 1 is better for a cover plate 14, and this cover plate 14 is provided with a through hole 141, and this through hole 141 is relative with the wind inlet 121 of this outer frame 12.
Said stator group 2 is arranged at above-mentioned fan frame 1 inside and is incorporated into this counterbalance 11; Wherein this stator pack 2 is various for after above-mentioned impeller 3 combination, in order to the structural design driving this impeller 3 to rotate start.In this preferred embodiment, this stator pack 2 has a substrate 21, this substrate 21 is incorporated into this outer periphery, axis part 13, and the modes such as can connect up in this substrate 21 surface, electroforming are provided with at least one coil groups 22, make this substrate 21 can form a circuit board, this coil groups 22 in order to be electrically connected one drive circuit (not shown), to drive above-mentioned impeller 3 to rotate start.
Above-mentioned impeller 3 is provided with central shaft 31 and a permanent magnet 32, this central shaft 31 is rotatably incorporated into the axis part 13 of this fan frame 1, form an air gap between this permanent magnet 32 and coil groups 22 of this stator pack 2, in this preferred embodiment, this air gap is axial air-gap.
Again, please coordinate with reference to shown in Fig. 4, the permanent magnet 32 of above-mentioned impeller 3 has outer ring surface 321 and an inner ring surface 322, form a magnetic scope D between this outer ring surface 321 and inner ring surface 322, this magnetic scope D is axially relative with this counterbalance 11, and this substrate 21 is between this permanent magnet 32 and this counterbalance 11, in order to cover this magnetic scope D at least partially, in more detail, this substrate 21 has outer periphery 211, and these outer periphery 211 can be positioned at this magnetic scope D or exceed magnetic scope D; In this preferred embodiment, the outer periphery 211 of this substrate 21 exceed magnetic scope D, in order to cover the whole of this magnetic scope D.
Please refer to shown in Fig. 5 and Fig. 6, the radiation fan of the tool equilibrium function of the present invention second preferred embodiment comprises a fan frame 1, stator group 4 and an impeller 3 equally.Wherein the structure characteristic of this fan frame 1 and impeller 3 and composition roughly identical with above-mentioned first preferred embodiment, hold and do not repeat.
The stator pack 4 of the present invention second preferred embodiment comprises a substrate 41, at least one silicon steel plate 42, insulate external member 43 and a coil groups 44.Drive circuit is laid to form a circuit substrate in this substrate 41 surface, this silicon steel plate 42 can be solid memder, or this silicon steel plate 42 is for several and to be mutually stackingly integrally formed, it is outside that this insulation external member 43 is incorporated into this silicon steel plate 42, this coil groups 44 is wound in this insulation external member 43, wherein this substrate 41 is same between this permanent magnet 32 and this counterbalance 11, in order to cover this magnetic scope D at least partially.Moreover the counterbalance 11 of the present embodiment is better is provided with at least one auxiliary wind inlet 111, to improve the air output of this radiation fan.
Again, shown in Fig. 6, in this preferred embodiment, a radial air gap is formed between this coil groups 44 and this permanent magnet 32, compare with the first preferred embodiment shown in above-mentioned Fig. 4, the permanent magnet 32 with the radiation fan of radial air gap is relatively little with the corresponding magnetic area of counterbalance 11, therefore, for guaranteeing that this counterbalance 11 can maintain the basic balance and stability effect of this impeller 3, in this preferred embodiment, one outer periphery 411 of this substrate 41 are positioned at this magnetic scope D, in order to the part making this substrate 41 only cover this magnetic scope D; In more detail, as shown in Figure 7, the outer periphery 411 of this substrate 41 are better is provided with relatively several breach 412, or, as shown in Figure 8, the outer periphery 411 of this substrate 41 are better is provided with relatively several trimming 413, makes this substrate 41 under the precondition of a part only covering this magnetic scope D, this permanent magnet 32 still maintains predetermined magnet effect by this breach 412 or trimming 413 with this counterbalance 11, makes this impeller 3 can have spin balancing concurrently simultaneously and rotate advantage smoothly.
Based on the technological concept of the radiation fan of above-mentioned tool equilibrium function, the present invention directly can replace the pedestal of the fan frame of existing radiation fan by this counterbalance 11, reduce structure complexity, improve assembling convenience, reduce many effects such as manufacture cost and reduction axial height to reach; Wherein utilize the mutual magnetic of this counterbalance 11 and this permanent magnet 32, no matter make radiation fan of the present invention operating, static or start time, all suitably can maintain spin balancing and the rotational stability of this impeller 3; The more important thing is, radiation fan of the present invention more can cover this magnetic scope D at least partially by the substrate 21,41 of this stator pack 2,4 further, in order to solve between this permanent magnet 32 with this counterbalance 11 because of the problem such as direct relative produced magnetic attraction is excessive, effectively to reduce resistance when this impeller 3 rotates, and then reach the effect improving radiation fan running quality.
The above, be only preferred embodiment of the present invention, when not limiting the scope of the present invention with this; Therefore all simple equivalences done according to the claims in the present invention scope and description change and modify, and all should still remain within the scope of the patent.

Claims (11)

1. a radiation fan for tool equilibrium function, comprising:
A fan frame, comprise a counterbalance, the outer periphery of this counterbalance are provided with an outer frame, and this outer frame is provided with a wind inlet and an exhaust outlet, and this counterbalance is provided with an axis part;
A stator pack, comprises a substrate and a coil groups; And
An impeller, comprise a central shaft and a permanent magnet, this central shaft can be incorporated into this axis part rotatably, forms air gap between this permanent magnet and coil groups of this stator pack;
It is characterized in that, the permanent magnet of above-mentioned impeller has an outer ring surface and an inner ring surface, a magnetic scope is formed between this outer ring surface and inner ring surface, this magnetic scope is axially relative with this counterbalance, the substrate of this stator pack between this permanent magnet and this counterbalance, in order to cover this magnetic scope at least partially.
2. the radiation fan of tool equilibrium function according to claim 1, is characterized in that, the air gap between this permanent magnet and coil groups of this stator pack is axial air-gap.
3. the radiation fan of tool equilibrium function according to claim 1, is characterized in that, the air gap between this permanent magnet and coil groups of this stator pack is radial air gap.
4. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the outer periphery of the substrate of this stator pack are positioned at this magnetic scope.
5. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the outer periphery of the substrate of this stator pack exceed this magnetic scope.
6. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the substrate surface of this stator pack forms this coil groups, and this substrate is a circuit board, and this coil groups is electrically connected a drive circuit.
7. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, it is characterized in that, this stator pack separately comprises at least one silicon steel plate and an insulation external member, this substrate surface is provided with drive circuit to form a circuit substrate, it is outside that this insulation external member is incorporated into this silicon steel plate, and this coil groups is wound in this insulation external member.
8. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the outer periphery of the substrate of this stator pack are provided with relative several breach.
9. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the outer periphery of the substrate of this stator pack are provided with relative several trimmings.
10. the radiation fan of the tool equilibrium function according to claim 1,2 or 3, is characterized in that, the outer frame of this fan frame is in conjunction with a cover plate, and this cover plate is provided with a through hole, and this through hole is relative with the wind inlet of this outer frame.
The radiation fan of 11. tool equilibrium functions according to claim 1,2 or 3, it is characterized in that, this counterbalance is provided with at least one auxiliary wind inlet.
CN201310272094.3A 2013-06-19 2013-07-01 Heat radiation fan with balance function Expired - Fee Related CN104235036B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW102121784 2013-06-19
TW102121784A TWI516685B (en) 2013-06-19 2013-06-19 Balanceable fan

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Publication Number Publication Date
CN104235036A true CN104235036A (en) 2014-12-24
CN104235036B CN104235036B (en) 2017-08-11

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CN201320386772.4U Expired - Fee Related CN203412788U (en) 2013-06-19 2013-07-01 Heat radiation fan with balance function

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US (1) US20140377093A1 (en)
CN (2) CN104235036B (en)
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US10539144B2 (en) * 2017-05-02 2020-01-21 Asia Vital Components Co., Ltd. Fan central barrel coupling structure
US11895803B2 (en) * 2020-06-27 2024-02-06 Intel Corporation Fan for an electronic device

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Also Published As

Publication number Publication date
CN104235036B (en) 2017-08-11
US20140377093A1 (en) 2014-12-25
TWI516685B (en) 2016-01-11
TW201500653A (en) 2015-01-01
CN203412788U (en) 2014-01-29

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