ATE86011T1 - Mehrstufige roots-vakuumpumpe. - Google Patents

Mehrstufige roots-vakuumpumpe.

Info

Publication number
ATE86011T1
ATE86011T1 AT89120179T AT89120179T ATE86011T1 AT E86011 T1 ATE86011 T1 AT E86011T1 AT 89120179 T AT89120179 T AT 89120179T AT 89120179 T AT89120179 T AT 89120179T AT E86011 T1 ATE86011 T1 AT E86011T1
Authority
AT
Austria
Prior art keywords
housing
shaft
stator
compression
shafts
Prior art date
Application number
AT89120179T
Other languages
English (en)
Inventor
Dominique Guittet
Eric Taberlet
Jean-Francois Vuillermoz
Original Assignee
Cit Alcatel
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9371625&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ATE86011(T1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Cit Alcatel filed Critical Cit Alcatel
Application granted granted Critical
Publication of ATE86011T1 publication Critical patent/ATE86011T1/de

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
    • F04C27/00—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids
    • F04C27/008—Sealing arrangements in rotary-piston pumps specially adapted for elastic fluids for other than working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F04C27/009—Shaft sealings specially adapted for pumps
AT89120179T 1988-11-07 1989-10-31 Mehrstufige roots-vakuumpumpe. ATE86011T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8814494A FR2638788B1 (fr) 1988-11-07 1988-11-07 Pompe a vide du type roots multietage
EP89120179A EP0368122B1 (de) 1988-11-07 1989-10-31 Mehrstufige Roots-Vakuumpumpe

Publications (1)

Publication Number Publication Date
ATE86011T1 true ATE86011T1 (de) 1993-03-15

Family

ID=9371625

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89120179T ATE86011T1 (de) 1988-11-07 1989-10-31 Mehrstufige roots-vakuumpumpe.

Country Status (8)

Country Link
US (1) US4990069A (de)
EP (1) EP0368122B1 (de)
JP (1) JPH066950B2 (de)
AT (1) ATE86011T1 (de)
DE (1) DE68905026T2 (de)
ES (1) ES2039804T3 (de)
FR (1) FR2638788B1 (de)
RU (1) RU1784072C (de)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06505076A (ja) * 1991-02-01 1994-06-09 ライボルト　アクチエンゲゼルシヤフト 乾式運転型の２軸式真空ポンプ
FR2685392B1 (fr) * 1991-12-18 1995-04-28 Cit Alcatel Dispositif pour assurer l'etancheite au lubrifiant de machines de transfert de gaz.
US6123526A (en) * 1998-09-18 2000-09-26 Industrial Technology Research Institute Multistage pump and method for assembling the pump
DE20010216U1 (de) * 2000-06-09 2001-10-18 Hugo Vogelsang Maschb Gmbh Axiale Dichtung
JP2002122088A (ja) 2000-10-16 2002-04-26 Toyota Industries Corp 真空ポンプにおける流路構造
JP2002221177A (ja) * 2001-01-24 2002-08-09 Toyota Industries Corp 真空ポンプにおける軸封構造
JP2002257244A (ja) * 2001-02-28 2002-09-11 Toyota Industries Corp 真空ポンプにおける軸封構造
JP2002257070A (ja) * 2001-02-28 2002-09-11 Toyota Industries Corp 真空ポンプにおける軸封構造
JP4061850B2 (ja) * 2001-02-28 2008-03-19 株式会社豊田自動織機 真空ポンプにおける軸封構造
JP2002332963A (ja) * 2001-05-08 2002-11-22 Toyota Industries Corp 真空ポンプにおける油洩れ防止構造
JP4747437B2 (ja) 2001-05-08 2011-08-17 株式会社豊田自動織機 真空ポンプにおける油洩れ防止構造
JP2003013876A (ja) * 2001-06-29 2003-01-15 Toyota Industries Corp 真空ポンプにおける油洩れ防止構造
JP4617615B2 (ja) * 2001-07-05 2011-01-26 株式会社豊田自動織機 真空ポンプにおける油洩れ防止構造
US9004491B2 (en) * 2002-06-21 2015-04-14 Inpro/Seal Llc Shaft seal assembly
US8979093B2 (en) 2002-06-21 2015-03-17 Inpro/Seal, LLC Pressure balanced shaft seal assembly
CN100400881C (zh) * 2002-08-23 2008-07-09 株式会社丰田自动织机 具有轴密封结构的真空泵
JP3896930B2 (ja) * 2002-09-10 2007-03-22 株式会社豊田自動織機 流体ポンプ装置
DE10306547B4 (de) * 2003-02-17 2005-08-04 Aerzener Maschinenfabrik Gmbh Drehkolbenmaschine
GB0310615D0 (en) * 2003-05-08 2003-06-11 Boc Group Plc Improvements in seal assemblies
GB2408801A (en) * 2003-12-03 2005-06-08 Boc Group Plc Detection of seal leak using differential pressure measurement
JP4844489B2 (ja) * 2007-07-19 2011-12-28 株式会社豊田自動織機 流体機械
GB0719394D0 (en) * 2007-10-04 2007-11-14 Edwards Ltd A multi stage clam shell vacuum pump
JP4670854B2 (ja) * 2007-11-05 2011-04-13 株式会社豊田自動織機 真空ポンプにおける軸封構造
US9611847B2 (en) * 2009-04-16 2017-04-04 Eaton Industrial Corporation Aircraft main engine fuel pump with multiple gear stages using shared journals
CN103899539A (zh) * 2014-03-03 2014-07-02 苏州伊莱茨流体装备有限公司 一种具备自循环油密封系统的罗茨真空泵
TWI735960B (zh) 2018-09-28 2021-08-11 美商英普羅密封有限責任公司 環狀密封組件
US11815095B2 (en) * 2019-01-10 2023-11-14 Elival Co., Ltd Power saving vacuuming pump system based on complete-bearing-sealing and dry-large-pressure-difference root vacuuming root pumps
US11905950B2 (en) * 2020-01-24 2024-02-20 Circor Pumps North America, Llc. Screw pump with improved sealing and bearing assembly

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US937916A (en) * 1909-04-22 1909-10-26 Bliss E W Co Steam-packing.
DE3047699A1 (de) * 1980-12-18 1982-07-01 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar Waelzkolbenpumpe mit druckausgleichskammer
IT1155126B (it) * 1982-03-10 1987-01-21 Fiat Auto Spa Compressore volumetrico rotativo del tipo roots
JPS59213984A (ja) * 1983-05-20 1984-12-03 Nippon Piston Ring Co Ltd ベ−ン形回転圧縮機の軸受装置
JPS61252889A (ja) * 1985-04-23 1986-11-10 Anretsuto:Kk 多段式高圧用ル−ツブロワ−
JPH0733834B2 (ja) * 1986-12-18 1995-04-12 株式会社宇野澤組鐵工所 ロータ内蔵ハウジングの外周温度が安定化された内部分流逆流冷却多段式の三葉式真空ポンプ

Also Published As

Publication number Publication date
RU1784072C (ru) 1992-12-23
US4990069A (en) 1991-02-05
JPH066950B2 (ja) 1994-01-26
FR2638788A1 (fr) 1990-05-11
EP0368122A1 (de) 1990-05-16
EP0368122B1 (de) 1993-02-24
FR2638788B1 (fr) 1994-01-28
ES2039804T3 (es) 1993-10-01
DE68905026D1 (de) 1993-04-01
DE68905026T2 (de) 1993-06-17
JPH02157490A (ja) 1990-06-18

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Legal Events

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