US20050069427A1 - Housing for a fluid flow engine - Google Patents
Housing for a fluid flow engine Download PDFInfo
- Publication number
- US20050069427A1 US20050069427A1 US10/653,437 US65343703A US2005069427A1 US 20050069427 A1 US20050069427 A1 US 20050069427A1 US 65343703 A US65343703 A US 65343703A US 2005069427 A1 US2005069427 A1 US 2005069427A1
- Authority
- US
- United States
- Prior art keywords
- housing
- bearing
- space
- rotor
- bearing space
- 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.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/026—Scrolls for radial machines or engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Definitions
- the present invention relates to a housing for a fluid flow engine, such as a turbocharger, a secondary air charger or the like. More particularly, the invention relates to a housing for such a fluid flow engine which comprises a first rotor space for receiving a turbine rotor, a bearing space for supporting a shaft supporting the turbine rotor at one of its ends, and a second rotor space for receiving and housing a compressor rotor, both rotor spaces being surrounded by channels for conveying a gas, such as exhaust gas or air.
- a gas such as exhaust gas or air.
- housings are known from a variety of documents, for example from document CA-1,270,120 or U.S. Pat. Nos. 2,860,827; 4,179,247 or 4,659,295.
- the housing consists of several housing parts, mostly three.
- a separate housing part forms each the turbine rotor space, another one the bearing space and a third one the compressor rotor space.
- These housing parts have then to be screwed or assembled in some way together, which is cumbersome, requires small tolerances and is, thus, expensive.
- the present invention is based on the recognition that a multipart realization of such a housing is not necessary for all applications. It is, therefore, an object of the invention to reduce costs of production and assembly.
- a special advantage of the construction according to a preferred embodiment of the invention resides in that only a single technically high-grade part has to be produced instead of a plurality of them (involving an adaptation of tolerances to one another).
- the rotor spaces, open to the exterior, can be covered with a simple flange member so that mounting the housing requires only mounting the two flanges, thus being less cumbersome.
- FIG. 1 is an axial cross-section of a housing for a fluid flow engine according to the invention, in which, for better understanding, a bearing plus rotors and housing cover are mounted, as is schematically indicated;
- FIG. 2 is a side elevation according to line II-II of FIG. 1 .
- a single piece housing 1 which is, for example, produced from cast material, such as gray cast iron or a light metal casting, surrounds and defines with its inner walls a turbine rotor space 2 for a turbine rotor 2 ′, shown in FIG. 1 , at one of its axial ends, a compressor rotor space 3 for a compressor rotor 3 ′ to be accommodated therein at the opposite axial end of the housing, and in-between a bearing space 4 for a shaft 5 which, as known to one of ordinary skill in the art, supports each of the two rotors 2 ′ and 3 ′ on one of its ends.
- a channel is assigned which, ordinarily, surrounds the rotor space in an approximately annular or spiral form, i.e. a supply channel 6 and a discharge channel 7 .
- a gaseous medium i.e. in the case of a turbocharger an exhaust gas of a combustion motor, in the case of a secondary air charger it is air, or any other fluid, such as a liquid, is supplied to the supply channel 6 from a connection piece 8 shown in FIG. 2 , which is preferably also integrally formed on the housing 1 , and which may be connected to the exhaust of a combustion motor.
- air is supplied to the compressor rotor space 3 through an axially extending connection piece 17 (see arrow a′), which is situated on a housing cover 18 to be fastened to the end of the housing 1 by means of bolts 19 . Compressed air is then discharged through a discharge channel 7 and a connection piece 9 .
- housing 1 can also be closed at its opposite axial end by a housing cover 20 , to which end it may comprise threaded bores 21 (only one is represented), which bores receive screws or bolts 22 in a similar way as described with reference to bolts 19 .
- this cover would define and limit the rotor space 2 , just as the cover 18 delimits rotor space 3 .
- cover 20 possesses an axial connection piece 23 through which fluid is discharged in correspondence with arrow a, said fluid having been supplied to rotor 2 ′ through the supply channel 6 .
- the housing 1 is relatively thick, but is formed to have a shape that is easily produced. However, it is within the scope of the present invention to restrict the housing 1 more or less between the turbine rotor space 2 and the compressor rotor space 3 and to provide it, if desired, with outer ribs for eliminating heat.
- FIG. 1 Even though a single housing 1 is shown in FIG. 1 which surrounds all three spaces 2 - 4 , the invention is not limited to this embodiment.
- the housing 1 it would be conceivable to produce the housing 1 from two separable interconnected parts, as is indicated with dotted line L.
- a tolerance problem could arise from this two-part construction for which reason a completely integral construction for all three spaces 2 - 4 is preferred.
- tolerance problems could be better managed if the two parts of the two-partite housing 1 have inter-engaging fitting surfaces, particularly conical fitting surfaces 10 , so that they have only to be fitted into each other and then to be secured in a manner known to one of ordinary skill in the art.
- Such a subdivision of the housing 1 can also be effected in another way, for example by providing a housing that surrounds one of the rotor spaces and the whole bearing space.
- a further modification could consist in that both rotor spaces 2 and 3 and/or the supply and discharge channels 6 and 7 are of equal size.
- bearing space 4 can receive and house a conventional slide bearing which, if desired, may be subdivided into at least two axially off-set parts, or an antifriction bearing is used.
- an axial fixing arrangement such as thrust bearing
- an axial fixing arrangement is provided at an end of the bearing space 4 facing the respective rotor space 2 and/or 3 .
- Such an arrangement is shown on the right side of FIG. 1 and is formed by an annular wall 15 .
- This wall 15 surrounds a space 14 for passing the shaft 5 through, i.e. that end of the shaft that supports the turbine rotor 2 ′ within the turbine space 2 , and determines and closes the bearing space 4 at that end thereof.
- the wall 15 is not necessarily an annular wall, but this embodiment is preferred.
- a cylindrical space 16 is provided at the other end of the bearing space 4 (at left in FIG. 1 ) where an axial fixing assembly, for example a thrust bearing, can be accommodated.
- an axial fixing assembly for example a thrust bearing
- the bearing space 4 has preferably the shape of a bushing. In this way, it is possible to insert the shaft 5 together with a pre-mounted bearing unit (or alternatively the bearing alone) into the bushing formed by the bearing space 4 where it abuts and engages the annular wall 15 .
- the annular wall 15 itself and its opening 14 for passing the shaft 5 through (i.e.
- the housing 1 itself could comprise radially extending outer connection flanges at both its ends (or on one of them) where the housing covers 18 and 20 including the appropriate axial connection pieces 17 , 23 for discharging a fluid, such as the exhaust gas (at right in FIG. 1 ) or for supplying air (at left in FIG. 1 ) may be screwed on.
- a fluid such as the exhaust gas (at right in FIG. 1 ) or for supplying air (at left in FIG. 1 ) may be screwed on.
- the rotors 2 ′, 3 ′ they may be of any conventional type; in this connection, reference is made to the documents cited at the outset.
Abstract
A housing (1) for a fluid flow engine comprises a first rotor space (2) for receiving and housing a turbine rotor, a bearing space (4) to house a shaft (5) of said turbine rotor, and a second rotor space (3) for receiving and housing a compressor rotor. The housing portions, which surround the bearing space (4), are integrally formed at least in part with those portions that surround at least one of the rotor spaces (2,3).
Description
- The present invention relates to a housing for a fluid flow engine, such as a turbocharger, a secondary air charger or the like. More particularly, the invention relates to a housing for such a fluid flow engine which comprises a first rotor space for receiving a turbine rotor, a bearing space for supporting a shaft supporting the turbine rotor at one of its ends, and a second rotor space for receiving and housing a compressor rotor, both rotor spaces being surrounded by channels for conveying a gas, such as exhaust gas or air.
- Such housings are known from a variety of documents, for example from document CA-1,270,120 or U.S. Pat. Nos. 2,860,827; 4,179,247 or 4,659,295. In all these known constructions, the housing consists of several housing parts, mostly three. For example, in most cases a separate housing part forms each the turbine rotor space, another one the bearing space and a third one the compressor rotor space. These housing parts have then to be screwed or assembled in some way together, which is cumbersome, requires small tolerances and is, thus, expensive.
- However, forming the housing of several parts was, generally based on a certain reason, i.e. to make heat conduction more difficult and to be able to choose different materials for the different housing parts.
- The present invention is based on the recognition that a multipart realization of such a housing is not necessary for all applications. It is, therefore, an object of the invention to reduce costs of production and assembly.
- According to the invention, this object is achieved in that the housing portion, that surrounds and defines the bearing space, is integrally formed with at least one of the housing portions which surround and define one of the rotor spaces. Accordingly, it would be possible to cast for each rotor a housing, that surrounds the respective rotor space and which is integrally interconnected with at least part of the housing portion, which surrounds and defines at least part of the bearing space. In this way, only the two rotor housing portions had to be assembled.
- In the context of this specification, the fact that a part is “integral” with another one should mean that both of them consist of a single piece.
- Of course, it is still more favorable if all three spaces, i.e. the two rotor spaces and the intermediate bearing space are surrounded by an integrally formed or cast housing.
- A special advantage of the construction according to a preferred embodiment of the invention resides in that only a single technically high-grade part has to be produced instead of a plurality of them (involving an adaptation of tolerances to one another). The rotor spaces, open to the exterior, can be covered with a simple flange member so that mounting the housing requires only mounting the two flanges, thus being less cumbersome.
- Further details of the invention will become apparent from the following description of an especially preferred embodiment schematically illustrated in the drawings, in which:
-
FIG. 1 is an axial cross-section of a housing for a fluid flow engine according to the invention, in which, for better understanding, a bearing plus rotors and housing cover are mounted, as is schematically indicated; -
FIG. 2 is a side elevation according to line II-II ofFIG. 1 . - A
single piece housing 1 which is, for example, produced from cast material, such as gray cast iron or a light metal casting, surrounds and defines with its inner walls aturbine rotor space 2 for aturbine rotor 2′, shown inFIG. 1 , at one of its axial ends, acompressor rotor space 3 for acompressor rotor 3′ to be accommodated therein at the opposite axial end of the housing, and in-between a bearing space 4 for ashaft 5 which, as known to one of ordinary skill in the art, supports each of the tworotors 2′ and 3′ on one of its ends. To each of therotor spaces 2, 3 a channel is assigned which, ordinarily, surrounds the rotor space in an approximately annular or spiral form, i.e. a supply channel 6 and adischarge channel 7. - A gaseous medium, i.e. in the case of a turbocharger an exhaust gas of a combustion motor, in the case of a secondary air charger it is air, or any other fluid, such as a liquid, is supplied to the supply channel 6 from a
connection piece 8 shown inFIG. 2 , which is preferably also integrally formed on thehousing 1, and which may be connected to the exhaust of a combustion motor. On the other hand, air is supplied to thecompressor rotor space 3 through an axially extending connection piece 17 (see arrow a′), which is situated on ahousing cover 18 to be fastened to the end of thehousing 1 by means ofbolts 19. Compressed air is then discharged through adischarge channel 7 and aconnection piece 9. - It should be noted that the
housing 1 according to the invention can also be closed at its opposite axial end by ahousing cover 20, to which end it may comprise threaded bores 21 (only one is represented), which bores receive screws orbolts 22 in a similar way as described with reference tobolts 19. In this case, this cover would define and limit therotor space 2, just as thecover 18 delimitsrotor space 3. In similar manner,cover 20 possesses anaxial connection piece 23 through which fluid is discharged in correspondence with arrow a, said fluid having been supplied torotor 2′ through the supply channel 6. - As best seen in
FIG. 1 , thehousing 1 is relatively thick, but is formed to have a shape that is easily produced. However, it is within the scope of the present invention to restrict thehousing 1 more or less between theturbine rotor space 2 and thecompressor rotor space 3 and to provide it, if desired, with outer ribs for eliminating heat. - Even though a
single housing 1 is shown inFIG. 1 which surrounds all three spaces 2-4, the invention is not limited to this embodiment. For example, it would be conceivable to produce thehousing 1 from two separable interconnected parts, as is indicated with dotted line L. Of course, a tolerance problem could arise from this two-part construction for which reason a completely integral construction for all three spaces 2-4 is preferred. However, tolerance problems could be better managed if the two parts of the two-partite housing 1 have inter-engaging fitting surfaces, particularlyconical fitting surfaces 10, so that they have only to be fitted into each other and then to be secured in a manner known to one of ordinary skill in the art. Such a subdivision of thehousing 1 can also be effected in another way, for example by providing a housing that surrounds one of the rotor spaces and the whole bearing space. A further modification could consist in that bothrotor spaces discharge channels 6 and 7 are of equal size. - It should further be noted that the bearing space 4 can receive and house a conventional slide bearing which, if desired, may be subdivided into at least two axially off-set parts, or an antifriction bearing is used.
- In contrast to the prior art where axial fixing of the bearing was effected in the middle of the bearing space (see U.S. Pat. No. 4,179,247), it is preferred according to the invention if an axial fixing arrangement, such as thrust bearing, is provided at an end of the bearing space 4 facing the
respective rotor space 2 and/or 3, In this way, axial fixing can be achieved without expensive treatment of surfaces and either a thrust bearing can easily be mounted or a corresponding arrangement can easily be provided. Such an arrangement is shown on the right side ofFIG. 1 and is formed by anannular wall 15. Thiswall 15 surrounds aspace 14 for passing theshaft 5 through, i.e. that end of the shaft that supports theturbine rotor 2′ within theturbine space 2, and determines and closes the bearing space 4 at that end thereof. It is clear that thewall 15 is not necessarily an annular wall, but this embodiment is preferred. - On the other hand, a
cylindrical space 16 is provided at the other end of the bearing space 4 (at left inFIG. 1 ) where an axial fixing assembly, for example a thrust bearing, can be accommodated. Such axial fixing assemblies or thrust bearings are known to those skilled in the art and, therefore, need not be explained in detail. Thus the bearing space 4 has preferably the shape of a bushing. In this way, it is possible to insert theshaft 5 together with a pre-mounted bearing unit (or alternatively the bearing alone) into the bushing formed by the bearing space 4 where it abuts and engages theannular wall 15. Theannular wall 15 itself and itsopening 14 for passing theshaft 5 through (i.e. theopening 14 corresponds in size approximately to the diameter of the shaft 5) may either be formed as a friction or slide bearing itself or may receive such bearing (or may be left without any bearing). As soon as the bearing unit, having preferably the same axial length as the bearing space 4, has been introduced into that bearing space 4, the bearing may be axially fixed by inserting a thrust bearing or any other axial fixing device into thespace 16. - Numerous modifications are possible within the scope of the present invention, some of them having been mentioned already above. Furthermore, it would be conceivable to provide lubricating bores which lead from the exterior, e.g. from an appropriate nipple, into the bearing space 4. The
housing 1 itself could comprise radially extending outer connection flanges at both its ends (or on one of them) where the housing covers 18 and 20 including the appropriateaxial connection pieces FIG. 1 ) or for supplying air (at left inFIG. 1 ) may be screwed on. In each case, however, it will be seen that not only the housing construction is simplified, but that in addition mounting is facilitated. With respect to therotors 2′, 3′, they may be of any conventional type; in this connection, reference is made to the documents cited at the outset. - Instead of the above-mentioned axial fixing arrangement, as preferred, one could provide an axial fixing device within the bearing space 4, as is known to one of ordinary skill in the art from U.S. Pat. No. 4,179,247, for example by providing at least one
annular groove 24 in the bushing-like bore of the bearing space 4 in order to accommodate there such an axial fixing unit. In this way, it would be possible, if desired, to provide an arrangement for axially fixing the bearing between both the ends of the bearing space 4.
Claims (9)
1-6. (cancelled)
7. A housing (1) for a fluid flow engine, said housing comprising:
a first rotor space (2) for receiving a turbine rotor (2′) and comprising flow conduits for supply and removal of a gas (6,23);
a second rotor space (3) for receiving a compressor rotor (3′) and comprising flow conduits for supply and removal of a gas (17,7);
a bearing space (4) for a shaft (5) comprising a first end adapted to be axially attached to said turbine rotor (2′), and a second end adapted to be axially attached to said compressor rotor (3′);
wherein said housing (1) is formed as one piece and at least one of said spaces (2,3,4) surrounds each said rotor (2′,3′).
8. The housing of claim 7 , wherein all three said spaces (2-4) are defined by a unitary housing (1).
9. The housing of claim 7 , wherein said bearing space (4) is larger than the diameter of said shaft (5) for receiving a bearing (13, 13′).
10. The housing of claim 8 , wherein said housing (1) comprises at least one supply support (8 or 9) for channeling a gas to the associated supply channel (6 or 7).
11. The housing of claim 7 , further comprising at least one means (15, 16) for axially fixing the bearing, wherein said means are located at at least one end of the bearing space (4).
12. The housing of claim 7 , wherein said means (15, 16) for axially fixing the bearing are located at both ends of the bearing space (4).
13. The housing of claim 11 , wherein the bearing space (4) further comprises a radially inward directed ring-wall (15) at one end of said bearing space for mounting and axially fixing the shaft (5).
14. The housing of claim 13 , wherein said ring-wall is an axial bearing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02019178A EP1394366B1 (en) | 2002-09-02 | 2002-09-02 | Turbomachine housing |
EP02019178.9 | 2002-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050069427A1 true US20050069427A1 (en) | 2005-03-31 |
Family
ID=31197832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/653,437 Abandoned US20050069427A1 (en) | 2002-09-02 | 2003-09-02 | Housing for a fluid flow engine |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050069427A1 (en) |
EP (1) | EP1394366B1 (en) |
JP (1) | JP2004092643A (en) |
DE (1) | DE50209663D1 (en) |
Cited By (27)
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US20080034754A1 (en) * | 2003-11-04 | 2008-02-14 | Mann & Hummel Gmbh | Non-Positive-Displacement Machine Comprising a Spiral Channel Provided in the Housing Middle Part |
US20080175719A1 (en) * | 2006-04-14 | 2008-07-24 | Deka Products Limited Partnership | Fluid pumping systems, devices and methods |
US20080208103A1 (en) * | 2007-02-27 | 2008-08-28 | Deka Products Limited Partnership | Pumping Cassette |
US20080253427A1 (en) * | 2007-02-27 | 2008-10-16 | Deka Products Limited Partnership | Sensor Apparatus Systems, Devices and Methods |
US20090008331A1 (en) * | 2007-02-27 | 2009-01-08 | Deka Products Limited Partnership | Hemodialysis systems and methods |
US20090095679A1 (en) * | 2007-02-27 | 2009-04-16 | Deka Products Limited Partnership | Hemodialysis systems and methods |
US20090101549A1 (en) * | 2007-02-27 | 2009-04-23 | Deka Products Limited Partnership | Modular assembly for a portable hemodialysis system |
US20100056975A1 (en) * | 2008-08-27 | 2010-03-04 | Deka Products Limited Partnership | Blood line connector for a medical infusion device |
US20100051551A1 (en) * | 2007-02-27 | 2010-03-04 | Deka Products Limited Partnership | Reagent supply for a hemodialysis system |
US20100192686A1 (en) * | 2007-02-27 | 2010-08-05 | Deka Products Limited Partnership | Blood treatment systems and methods |
US20100202878A1 (en) * | 2007-09-07 | 2010-08-12 | Man Turbo Ag | Turbo Engine and Method for Producing Such a Turbo Engine |
US20110158796A1 (en) * | 2008-05-27 | 2011-06-30 | Siemens Aktiengesellschaft | Collecting chamber and production process |
US20120186247A1 (en) * | 2011-01-26 | 2012-07-26 | Honeywell International Inc. | Turbocharger with Reversed Compressor Volute Optionally Integrated into the Center Housing |
US8393690B2 (en) | 2007-02-27 | 2013-03-12 | Deka Products Limited Partnership | Enclosure for a portable hemodialysis system |
US8499780B2 (en) | 2007-02-27 | 2013-08-06 | Deka Products Limited Partnership | Cassette system integrated apparatus |
US8955318B2 (en) | 2012-03-21 | 2015-02-17 | Honeywell International Inc. | Turbocharger cartridge and engine cylinder head assembly |
US8966894B2 (en) | 2012-03-21 | 2015-03-03 | Honeywell International Inc. | Turbocharger cartridge and engine cylinder head assembly |
US8966895B2 (en) | 2012-03-21 | 2015-03-03 | Honeywell International Inc. | Turbocharger cartridge, bypass, and engine cylinder head assembly |
US9028691B2 (en) | 2007-02-27 | 2015-05-12 | Deka Products Limited Partnership | Blood circuit assembly for a hemodialysis system |
US9091200B2 (en) | 2012-03-21 | 2015-07-28 | Honeywell International Inc. | Turbocharger and engine cylinder head assembly |
US9517295B2 (en) | 2007-02-27 | 2016-12-13 | Deka Products Limited Partnership | Blood treatment systems and methods |
US9597442B2 (en) | 2007-02-27 | 2017-03-21 | Deka Products Limited Partnership | Air trap for a medical infusion device |
US9724458B2 (en) | 2011-05-24 | 2017-08-08 | Deka Products Limited Partnership | Hemodialysis system |
CN108643979A (en) * | 2018-04-10 | 2018-10-12 | 中国北方发动机研究所(天津) | A kind of supercritical carbon dioxide closed cycle turbine compressor |
US10201650B2 (en) | 2009-10-30 | 2019-02-12 | Deka Products Limited Partnership | Apparatus and method for detecting disconnection of an intravascular access device |
US10537671B2 (en) | 2006-04-14 | 2020-01-21 | Deka Products Limited Partnership | Automated control mechanisms in a hemodialysis apparatus |
US11384683B2 (en) | 2018-03-05 | 2022-07-12 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Turbocharger and internal combustion engine |
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EP1766235B1 (en) * | 2004-07-13 | 2017-04-19 | Energy Recovery, Inc. | Hydraulic turbocharger |
DE102008057878A1 (en) * | 2008-11-18 | 2010-05-20 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Supercharger device, particularly exhaust gas turbocharger for combustion engine of motor vehicle, has turbine wheel and compressor carrying shaft, where turbine wheel is partially surrounded by turbine housing |
EP2336495B1 (en) * | 2009-12-16 | 2012-03-07 | BorgWarner, Inc. | Exhaust gas turbo charger |
JP2011185174A (en) * | 2010-03-09 | 2011-09-22 | Ihi Corp | Turbo compressor and turbo refrigerator |
JP6093777B2 (en) * | 2011-12-09 | 2017-03-08 | ボーグワーナー インコーポレーテッド | Exhaust gas turbocharger bearing housing |
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- 2002-09-02 DE DE50209663T patent/DE50209663D1/en not_active Revoked
-
2003
- 2003-08-27 JP JP2003302784A patent/JP2004092643A/en not_active Withdrawn
- 2003-09-02 US US10/653,437 patent/US20050069427A1/en not_active Abandoned
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Cited By (69)
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US8062006B2 (en) * | 2003-11-04 | 2011-11-22 | Mann + Hummel Gmbh | Non-positive-displacement machine comprising a spiral channel provided in the housing middle part |
US20080034754A1 (en) * | 2003-11-04 | 2008-02-14 | Mann & Hummel Gmbh | Non-Positive-Displacement Machine Comprising a Spiral Channel Provided in the Housing Middle Part |
US20080175719A1 (en) * | 2006-04-14 | 2008-07-24 | Deka Products Limited Partnership | Fluid pumping systems, devices and methods |
US10537671B2 (en) | 2006-04-14 | 2020-01-21 | Deka Products Limited Partnership | Automated control mechanisms in a hemodialysis apparatus |
US8870549B2 (en) | 2006-04-14 | 2014-10-28 | Deka Products Limited Partnership | Fluid pumping systems, devices and methods |
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Also Published As
Publication number | Publication date |
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EP1394366A1 (en) | 2004-03-03 |
JP2004092643A (en) | 2004-03-25 |
EP1394366B1 (en) | 2007-03-07 |
DE50209663D1 (en) | 2007-04-19 |
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