FR2642479B1 - Pompe a vide du type roots, multietagee - Google Patents
Pompe a vide du type roots, multietageeInfo
- Publication number
- FR2642479B1 FR2642479B1 FR8901349A FR8901349A FR2642479B1 FR 2642479 B1 FR2642479 B1 FR 2642479B1 FR 8901349 A FR8901349 A FR 8901349A FR 8901349 A FR8901349 A FR 8901349A FR 2642479 B1 FR2642479 B1 FR 2642479B1
- Authority
- FR
- France
- Prior art keywords
- vacuum pump
- roots vacuum
- stage roots
- stage
- pump
- 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.)
- Expired - Fee Related
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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
-
- 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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
-
- 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
- F04C18/126—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 from the rotor body extending elements, not necessarily co-operating with corresponding recesses in the other rotor, e.g. lobes, Roots type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8901349A FR2642479B1 (fr) | 1989-02-02 | 1989-02-02 | Pompe a vide du type roots, multietagee |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8901349A FR2642479B1 (fr) | 1989-02-02 | 1989-02-02 | Pompe a vide du type roots, multietagee |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2642479A1 FR2642479A1 (fr) | 1990-08-03 |
FR2642479B1 true FR2642479B1 (fr) | 1994-03-18 |
Family
ID=9378408
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8901349A Expired - Fee Related FR2642479B1 (fr) | 1989-02-02 | 1989-02-02 | Pompe a vide du type roots, multietagee |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2642479B1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0448750B1 (fr) * | 1990-03-27 | 1996-05-01 | Leybold Aktiengesellschaft | Pompe à vide multiétagée avec compression à sec et procédé pour sa mise en oeuvre |
JP2537696B2 (ja) * | 1990-09-21 | 1996-09-25 | 株式会社荏原製作所 | 多段真空ポンプ |
DE4233142A1 (de) * | 1992-10-02 | 1994-04-07 | Leybold Ag | Verfahren zum Betrieb einer Klauenvakuumpumpe und für die Durchführung dieses Betriebsverfahrens geeignete Klauenvakuumpumpe |
GB0620144D0 (en) * | 2006-10-11 | 2006-11-22 | Boc Group Plc | Vacuum pump |
WO2011019048A1 (fr) * | 2009-08-14 | 2011-02-17 | 株式会社アルバック | Pompe désamorcée |
DE202011104491U1 (de) * | 2011-08-17 | 2012-11-20 | Oerlikon Leybold Vacuum Gmbh | Wälzkolbenpumpe |
CN102444564B (zh) * | 2011-11-21 | 2014-12-24 | 浙江飞越机电有限公司 | 一体式真空泵 |
FR3106630B1 (fr) * | 2020-01-24 | 2022-01-28 | Pfeiffer Vacuum Technology AG | Pompe à vide sèche |
-
1989
- 1989-02-02 FR FR8901349A patent/FR2642479B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2642479A1 (fr) | 1990-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |