WO2002010593A1 - Verdichter - Google Patents
Verdichter Download PDFInfo
- Publication number
- WO2002010593A1 WO2002010593A1 PCT/EP2001/008967 EP0108967W WO0210593A1 WO 2002010593 A1 WO2002010593 A1 WO 2002010593A1 EP 0108967 W EP0108967 W EP 0108967W WO 0210593 A1 WO0210593 A1 WO 0210593A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor according
- housing
- alloy
- aluminum
- compressor
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0408—Light metal alloys
- C22C1/0416—Aluminium-based alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/123—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with radially or approximately radially from the rotor body extending tooth-like elements, co-operating with recesses in the other rotor, e.g. one tooth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/10—Stators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0436—Iron
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0436—Iron
- F05C2201/0439—Cast iron
- F05C2201/0442—Spheroidal graphite cast iron, e.g. nodular iron, ductile iron
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0466—Nickel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/90—Alloys not otherwise provided for
- F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2203/00—Non-metallic inorganic materials
- F05C2203/08—Ceramics; Oxides
- F05C2203/0804—Non-oxide ceramics
- F05C2203/0813—Carbides
- F05C2203/0817—Carbides of silicon
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2251/00—Material properties
- F05C2251/04—Thermal properties
- F05C2251/042—Expansivity
- F05C2251/046—Expansivity dissimilar
Definitions
- the invention relates to a compressor with a housing and at least one rotor rotatably mounted in the housing by means of a shaft, which rotates without contact with the housing.
- Compressors generally require cooling in order to be able to
- Cast iron with lamellar graphite is used as the standard material for the housing and cast iron with nodular graphite for the rotors.
- the value for the gap reduction is approximately 0.1 mm. Satisfactory levels of efficiency can be achieved in this way.
- the rotor consists of a powder metallurgy, silicon-containing aluminum material and the housing consists essentially of aluminum.
- Aluminum for the housing is understood to be essentially pure aluminum or an aluminum alloy with the typical relatively large coefficient of thermal expansion of approximately 23.8 x 10 "6 / K.
- the powdered aluminum-containing aluminum material typically has one Thermal expansion coefficient of only 16 x 10 "6 / K. If one again assumes a rotor diameter of 100 mm, the material combination according to the invention results in a gap reduction at a temperature difference of 100 ° K, which is calculated as follows:
- the gap reduction is hardly larger than the corresponding value when using cast iron for housings and rotors.
- an insulating layer is applied to the surfaces of the rotors. Through this insulating layer Heat transfer from the compressed medium to the rotors is reduced. The heat flow is increasingly dissipated via the shaft of the rotor. The reduced heating of the rotors by the insulating layer leads to less thermal expansion and therefore allows smaller gap widths, which increases the efficiency.
- FIG. 1 shows schematically an open claw compressor with a view of the rotors
- the compressor shown by way of example in FIG. 1 has a housing, generally designated 10, with an inner chamber 12, which consists of two overlapping partial cylinders of the same size.
- an inner chamber 12 which consists of two overlapping partial cylinders of the same size.
- two rotors 14, 16 are received in the form of double-winged roots.
- Each rotor 14, 16 is seated on a corresponding shaft 18, 20.
- the mutually parallel shafts 18, 20 are synchronized by a gear (not shown).
- the rotors 14, 16 run in the interior of the chamber 12 without mutual contact and without contact with the wall of the chamber 12. They roll into one another and thereby form work spaces of variable size, with internal compression taking place.
- the heat generated during the operation of the compressor is essentially dissipated by cooling the housing 10.
- the housing 10 has a multiplicity of cooling fins around which an air stream flows.
- the heated exhaust air is symbolized in the drawing by arrows.
- the rotors 14, 16 and the shafts 18, 20 are not cooled directly. Part of the heat flow is via the shafts 18, 20 and another part via the fluid flow dissipated.
- their surface is provided with a thermally insulating coating.
- the housing 10 is made of aluminum or an aluminum alloy, the coefficient of thermal expansion of which is approximately 23.8 ⁇ 10 6 / K.
- the rotors 14, 16 are made of an aluminum material, the coefficient of thermal expansion of which is approximately 16 ⁇ 10 6 / K. This pairing of materials results in a gap reduction which, based on a rotor diameter of 100 mm, is approximately 0.113 mm.
- the aluminum material from which the rotors 14, 16 are made is produced by powder metallurgy and is strengthened with dispersion.
- the composition of the aluminum material for the rotors is preferably as follows:
- the principle on which the invention is based can be applied to most designs of compressors with contactless rotors, but is particularly advantageous for two-shaft compressors with internal compression, e.g. Claw compressors and screw compressors.
- the invention extends in general to the use of a powder-metallurgical Al-Si alloy in rotors of compressors, pumps and rotary lobe machines in combination with a housing made of aluminum, in particular in machines with contactlessly operating rotors.
- the housing is constructed from an outer body 10a, which consists of aluminum or an aluminum alloy, and a ring 10b cast into it.
- the ring 10b consists of a powder-metallurgical, dispersion-hardened Al-Si alloy of the type described in more detail above.
- the ring forms the boundary of the chamber in which the rotors of the compressor are received.
- the two materials are fused together, so that there is an intimate bond between outer body 10a and ring 10b. Since the ring 10b is made of a material of substantially greater strength than the material of the outer body 10a, its thermal expansion properties essentially determine the thermal expansion of the housing as a whole.
- the rotors in this embodiment also consist of an Al-Si alloy of the type described above.
- the ring is provided with cast-on stiffening ribs 10c, which are directed radially outward.
- One of these stiffening ribs is arranged in each corner region of the housing.
- a gap reduction of approx. 0.16 mm can be achieved, again based on a rotor diameter of 100 mm.
- the housing has a bearing cover 22, with two bearings 24, 26 for the shafts 18, 20.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressor (AREA)
- Rotary Pumps (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/343,447 US6918749B2 (en) | 2000-08-02 | 2001-08-02 | Compressor with aluminum housing and at least one aluminum rotor |
AU2001278520A AU2001278520A1 (en) | 2000-08-02 | 2001-08-02 | Compressor |
JP2002516488A JP2004505210A (ja) | 2000-08-02 | 2001-08-02 | 圧縮機 |
EP01956582A EP1305524B1 (de) | 2000-08-02 | 2001-08-02 | Verdichter |
KR10-2003-7001264A KR20030026992A (ko) | 2000-08-02 | 2001-08-02 | 압축기 |
CA002417794A CA2417794C (en) | 2000-08-02 | 2001-08-02 | Compressor |
DE50111283T DE50111283D1 (de) | 2000-08-02 | 2001-08-02 | Verdichter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20013338.1 | 2000-08-02 | ||
DE20013338U DE20013338U1 (de) | 2000-08-02 | 2000-08-02 | Verdichter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002010593A1 true WO2002010593A1 (de) | 2002-02-07 |
Family
ID=7944714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/008967 WO2002010593A1 (de) | 2000-08-02 | 2001-08-02 | Verdichter |
Country Status (10)
Country | Link |
---|---|
US (1) | US6918749B2 (de) |
EP (1) | EP1305524B1 (de) |
JP (1) | JP2004505210A (de) |
KR (1) | KR20030026992A (de) |
CN (1) | CN1277054C (de) |
AT (1) | ATE343064T1 (de) |
AU (1) | AU2001278520A1 (de) |
CA (1) | CA2417794C (de) |
DE (2) | DE20013338U1 (de) |
WO (1) | WO2002010593A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004054025A2 (de) * | 2002-12-12 | 2004-06-24 | Daimlerchrysler Ag | Vorrichtung zur luftversorgung von brennstoffzellen |
JPWO2004061307A1 (ja) * | 2002-12-26 | 2006-05-11 | 株式会社ヴァレオサーマルシステムズ | コンプレッサ |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4777541B2 (ja) * | 2001-06-08 | 2011-09-21 | パナソニック株式会社 | 電動機内蔵の圧縮機と、これを搭載した移動車 |
DE10156180B4 (de) | 2001-11-15 | 2015-10-15 | Oerlikon Leybold Vacuum Gmbh | Gekühlte Schraubenvakuumpumpe |
DE10156179A1 (de) * | 2001-11-15 | 2003-05-28 | Leybold Vakuum Gmbh | Kühlung einer Schraubenvakuumpumpe |
DE10321521B3 (de) * | 2003-05-14 | 2004-06-09 | Gkn Sinter Metals Gmbh | Ölpumpe |
DE10331979A1 (de) * | 2003-07-14 | 2005-02-17 | Gkn Sinter Metals Gmbh | Pumpe mit optimiertem Axialspiel |
US20080170958A1 (en) * | 2007-01-11 | 2008-07-17 | Gm Global Technology Operations, Inc. | Rotor assembly and method of forming |
GB0705971D0 (en) * | 2007-03-28 | 2007-05-09 | Boc Group Plc | Vacuum pump |
GB0707753D0 (en) * | 2007-04-23 | 2007-05-30 | Boc Group Plc | Vacuum pump |
US7708113B1 (en) * | 2009-04-27 | 2010-05-04 | Gm Global Technology Operations, Inc. | Variable frequency sound attenuator for rotating devices |
WO2011126032A2 (ja) | 2010-03-31 | 2011-10-13 | ナブテスコオートモーティブ株式会社 | 真空ポンプ |
DE102012003066B3 (de) * | 2012-02-17 | 2013-07-04 | Netzsch Pumpen & Systeme Gmbh | Verfahren und vorrichtung zum fixieren und synchronisieren von drehkolben in einer drehkolbenpumpe |
US10718334B2 (en) | 2015-12-21 | 2020-07-21 | Ingersoll-Rand Industrial U.S., Inc. | Compressor with ribbed cooling jacket |
DE202016005209U1 (de) * | 2016-08-30 | 2017-12-01 | Leybold Gmbh | Schraubenvakuumpumpe |
DE202016005207U1 (de) * | 2016-08-30 | 2017-12-01 | Leybold Gmbh | Vakuumpumpen-Rotor |
DE102016216279A1 (de) * | 2016-08-30 | 2018-03-01 | Leybold Gmbh | Vakuumpumpen-Schraubenrotor |
US10215186B1 (en) * | 2016-09-02 | 2019-02-26 | Rotary Machine Providing Thermal Expansion Compenstion, And Method For Fabrication Thereof | Rotary machine providing thermal expansion compensation, and method for fabrication thereof |
CN109707628A (zh) * | 2018-12-17 | 2019-05-03 | 陈鑫 | 真空泵的铝合金泵体结构及用于该泵体加工的珩磨头 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745854A (en) * | 1969-09-27 | 1973-07-17 | Bosch Gmbh Robert | Cast reinforced housing and method of making the same |
US4702885A (en) * | 1983-12-02 | 1987-10-27 | Sumitomo Electric Industries, Ltd. | Aluminum alloy and method for producing the same |
JPH0267488A (ja) * | 1988-09-01 | 1990-03-07 | Kobe Steel Ltd | スクリュ式過給機 |
JPH0510282A (ja) * | 1990-09-21 | 1993-01-19 | Ntn Corp | 過給機 |
JPH0543917A (ja) * | 1991-08-14 | 1993-02-23 | Mitsubishi Materials Corp | Al−Si系合金製熱間鍛造歯車の製造法 |
JPH0579468A (ja) * | 1991-05-02 | 1993-03-30 | Mitsubishi Materials Corp | 流体機械用ギヤの製造方法 |
EP0577062A1 (de) * | 1992-06-29 | 1994-01-05 | Sumitomo Electric Industries, Limited | Ölpumpe aus Aluminiumlegierungen |
WO1994016228A1 (de) * | 1993-01-08 | 1994-07-21 | Leybold Aktiengesellschaft | Vakuumpumpe mit rotor |
EP1099855A2 (de) * | 1999-11-09 | 2001-05-16 | Mitsubishi Materials Corporation | Innenzahnradpumpe aus einer Aluminiumlegierung |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US2708548A (en) | 1953-10-12 | 1955-05-17 | Hosdreg Company Inc | Blower |
US4086043A (en) * | 1976-12-30 | 1978-04-25 | Ingersoll-Rand Company | Rotor with plastic sheathing |
DE2945488A1 (de) | 1979-11-10 | 1981-05-21 | Barmag Barmer Maschf | Verbrennungskraftmaschine mit einer oelpumpe und einer als fluegelzellenpumpe ausgebildeten vakuumpumpe |
DE3124247C1 (de) | 1981-06-19 | 1983-06-01 | Boge Kompressoren Otto Boge Gmbh & Co Kg, 4800 Bielefeld | Schraubenverdichter |
DE3149245A1 (de) | 1981-12-11 | 1983-06-16 | Isartaler Schraubenkompressoren GmbH, 8192 Geretsried | "verdichteranlage" |
JPS5991490U (ja) | 1982-12-13 | 1984-06-21 | 日本ピストンリング株式会社 | 回転圧縮機 |
DE3321718A1 (de) | 1983-06-16 | 1984-12-20 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | Waelzkolbenpumpe |
DE3621176A1 (de) | 1986-06-25 | 1988-01-07 | Wankel Gmbh | Rotationskolbengeblaese |
DE3726209A1 (de) | 1986-08-08 | 1988-02-18 | Diesel Kiki Co | Drehkolbenverdichter |
JPS63243478A (ja) | 1987-03-30 | 1988-10-11 | Aisin Seiki Co Ltd | 流体機器用ロ−タ |
JPH0672616B2 (ja) | 1987-04-21 | 1994-09-14 | 株式会社ゼクセル | 鋼シャフト複合アルミニウム合金ローター |
JPH02130289A (ja) | 1988-11-09 | 1990-05-18 | Toyota Autom Loom Works Ltd | ベーン型圧縮機 |
US5024591A (en) | 1989-06-21 | 1991-06-18 | Diesel Kiki Co., Ltd. | Vane compressor having reduced weight as well as excellent anti-seizure and wear resistance |
DE9209641U1 (de) | 1992-07-17 | 1992-11-19 | Werner Rietschle Maschinen- Und Apparatebau Gmbh, 7860 Schopfheim | Wälzkolbenpumpe |
JP2592344Y2 (ja) | 1993-04-13 | 1999-03-17 | 株式会社豊田自動織機製作所 | スクロール型圧縮機 |
IL120001A0 (en) * | 1997-01-13 | 1997-04-15 | Amt Ltd | Aluminum alloys and method for their production |
-
2000
- 2000-08-02 DE DE20013338U patent/DE20013338U1/de not_active Expired - Lifetime
-
2001
- 2001-08-02 CN CNB018137083A patent/CN1277054C/zh not_active Expired - Fee Related
- 2001-08-02 WO PCT/EP2001/008967 patent/WO2002010593A1/de active IP Right Grant
- 2001-08-02 AU AU2001278520A patent/AU2001278520A1/en not_active Abandoned
- 2001-08-02 US US10/343,447 patent/US6918749B2/en not_active Expired - Fee Related
- 2001-08-02 KR KR10-2003-7001264A patent/KR20030026992A/ko not_active Application Discontinuation
- 2001-08-02 AT AT01956582T patent/ATE343064T1/de not_active IP Right Cessation
- 2001-08-02 DE DE50111283T patent/DE50111283D1/de not_active Expired - Fee Related
- 2001-08-02 JP JP2002516488A patent/JP2004505210A/ja active Pending
- 2001-08-02 EP EP01956582A patent/EP1305524B1/de not_active Expired - Lifetime
- 2001-08-02 CA CA002417794A patent/CA2417794C/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3745854A (en) * | 1969-09-27 | 1973-07-17 | Bosch Gmbh Robert | Cast reinforced housing and method of making the same |
US4702885A (en) * | 1983-12-02 | 1987-10-27 | Sumitomo Electric Industries, Ltd. | Aluminum alloy and method for producing the same |
JPH0267488A (ja) * | 1988-09-01 | 1990-03-07 | Kobe Steel Ltd | スクリュ式過給機 |
JPH0510282A (ja) * | 1990-09-21 | 1993-01-19 | Ntn Corp | 過給機 |
JPH0579468A (ja) * | 1991-05-02 | 1993-03-30 | Mitsubishi Materials Corp | 流体機械用ギヤの製造方法 |
JPH0543917A (ja) * | 1991-08-14 | 1993-02-23 | Mitsubishi Materials Corp | Al−Si系合金製熱間鍛造歯車の製造法 |
EP0577062A1 (de) * | 1992-06-29 | 1994-01-05 | Sumitomo Electric Industries, Limited | Ölpumpe aus Aluminiumlegierungen |
WO1994016228A1 (de) * | 1993-01-08 | 1994-07-21 | Leybold Aktiengesellschaft | Vakuumpumpe mit rotor |
EP1099855A2 (de) * | 1999-11-09 | 2001-05-16 | Mitsubishi Materials Corporation | Innenzahnradpumpe aus einer Aluminiumlegierung |
Non-Patent Citations (4)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 014, no. 247 (M - 0978) 25 May 1990 (1990-05-25) * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 282 (M - 1420) 31 May 1993 (1993-05-31) * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 343 (M - 1436) 29 June 1993 (1993-06-29) * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 407 (M - 1454) 29 July 1993 (1993-07-29) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004054025A2 (de) * | 2002-12-12 | 2004-06-24 | Daimlerchrysler Ag | Vorrichtung zur luftversorgung von brennstoffzellen |
WO2004054025A3 (de) * | 2002-12-12 | 2005-02-03 | Daimler Chrysler Ag | Vorrichtung zur luftversorgung von brennstoffzellen |
JPWO2004061307A1 (ja) * | 2002-12-26 | 2006-05-11 | 株式会社ヴァレオサーマルシステムズ | コンプレッサ |
US7320273B2 (en) | 2002-12-26 | 2008-01-22 | Zexel Valeo Climate Control Corporation | Compressor |
Also Published As
Publication number | Publication date |
---|---|
JP2004505210A (ja) | 2004-02-19 |
CN1277054C (zh) | 2006-09-27 |
DE20013338U1 (de) | 2000-12-28 |
US20040022646A1 (en) | 2004-02-05 |
EP1305524B1 (de) | 2006-10-18 |
DE50111283D1 (de) | 2006-11-30 |
US6918749B2 (en) | 2005-07-19 |
CA2417794C (en) | 2007-03-13 |
KR20030026992A (ko) | 2003-04-03 |
ATE343064T1 (de) | 2006-11-15 |
EP1305524A1 (de) | 2003-05-02 |
CA2417794A1 (en) | 2003-01-30 |
AU2001278520A1 (en) | 2002-02-13 |
CN1446290A (zh) | 2003-10-01 |
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