FR2582741A1 - Pompe mecanique a plusieurs etages comportant des conduits centraux pour empecher les fuites de gaz - Google Patents
Pompe mecanique a plusieurs etages comportant des conduits centraux pour empecher les fuites de gaz Download PDFInfo
- Publication number
- FR2582741A1 FR2582741A1 FR8607733A FR8607733A FR2582741A1 FR 2582741 A1 FR2582741 A1 FR 2582741A1 FR 8607733 A FR8607733 A FR 8607733A FR 8607733 A FR8607733 A FR 8607733A FR 2582741 A1 FR2582741 A1 FR 2582741A1
- Authority
- FR
- France
- Prior art keywords
- chamber
- pump
- gas
- mechanical pump
- pumping
- 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.)
- Pending
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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/0021—Systems for the equilibration of forces acting on the pump
- F04C29/0028—Internal leakage control
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB858513684A GB8513684D0 (en) | 1985-05-30 | 1985-05-30 | Mechanical pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2582741A1 true FR2582741A1 (fr) | 1986-12-05 |
Family
ID=10579927
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8607733A Pending FR2582741A1 (fr) | 1985-05-30 | 1986-05-29 | Pompe mecanique a plusieurs etages comportant des conduits centraux pour empecher les fuites de gaz |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS6217389A (de) |
DE (1) | DE3617889A1 (de) |
FR (1) | FR2582741A1 (de) |
GB (2) | GB8513684D0 (de) |
IT (1) | IT1188739B (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62153592A (ja) * | 1985-12-26 | 1987-07-08 | Ulvac Corp | 2段ガスバラストポンプの減圧軸封装置 |
JPS63239389A (ja) * | 1987-03-25 | 1988-10-05 | Anretsuto:Kk | 半割り型ケ−シング使用の多段式ル−ツロ−タの軸シ−ル |
NL9001875A (nl) * | 1990-07-17 | 1992-02-17 | Bombas Stork S A | Lobbenrotorpomp. |
JP2533605Y2 (ja) * | 1991-03-29 | 1997-04-23 | 株式会社島津製作所 | 位相差ポンプ |
DE19756838C1 (de) * | 1997-12-19 | 1999-04-15 | K Busch Gmbh Druck & Vakuum Dr | Drehkolbenpumpe |
JP2002221177A (ja) * | 2001-01-24 | 2002-08-09 | Toyota Industries Corp | 真空ポンプにおける軸封構造 |
JP2008008302A (ja) * | 2001-09-06 | 2008-01-17 | Ulvac Japan Ltd | 多段式容積移送型ドライ真空ポンプの省エネ方法 |
JP2004278381A (ja) * | 2003-03-14 | 2004-10-07 | Toyota Industries Corp | ギヤポンプ |
GB0515905D0 (en) | 2005-08-02 | 2005-09-07 | Boc Group Plc | Vacuum pump |
DE202011104491U1 (de) | 2011-08-17 | 2012-11-20 | Oerlikon Leybold Vacuum Gmbh | Wälzkolbenpumpe |
FR3094762B1 (fr) * | 2019-04-05 | 2021-04-09 | Pfeiffer Vacuum | Pompe à vide de type sèche et installation de pompage |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE415913C (de) * | 1922-04-01 | 1925-07-10 | Siemens Schuckertwerke G M B H | Einrichtung an Drehkolbenpumpen fuer gasfoermige Koerper zur Verminderung der Undichtigkeitsverluste durch Umstroemen |
GB596064A (en) * | 1945-07-17 | 1947-12-24 | Stothert & Pitt Ltd | Improvements in or relating to rotary pumps |
US3265292A (en) * | 1965-01-13 | 1966-08-09 | Svenska Rotor Maskiner Ab | Screw rotor machine |
US4329126A (en) * | 1977-11-11 | 1982-05-11 | Kobe Steel Limited | Method for preventing a leakage loss of gases in a screw compressor |
GB2088957A (en) * | 1980-12-05 | 1982-06-16 | Boc Ltd | Rotary positive-displacement Fluid-machines |
GB2111126A (en) * | 1981-12-09 | 1983-06-29 | British Oxygen Co Ltd | Rotary positive-displacement fluid-machines |
EP0126477A1 (de) * | 1983-05-20 | 1984-11-28 | NIPPON PISTON RING CO., Ltd. | Vorrichtung für das Wellenlager eines Kompressorrotors mit beweglichen Flügeln |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB790799A (en) * | 1955-08-15 | 1958-02-19 | Edwards High Vacuum Ltd | Improvements in or relating to multi-stage rotary vacuum pumps |
US3976405A (en) * | 1974-10-29 | 1976-08-24 | Cominco Ltd. | Pump |
JPS5163506U (de) * | 1974-11-15 | 1976-05-19 | ||
GB1570512A (en) * | 1976-09-04 | 1980-07-02 | Howden Compressors Ltd | Meshing-screw gas-compressing apparatus |
DE2754612A1 (de) * | 1977-12-08 | 1979-06-13 | Allweiler Ag | Schraubenspindelpumpe |
US4199304A (en) * | 1978-03-13 | 1980-04-22 | Ford Motor Company | Positive displacement compact slipper pump |
JPS55104588A (en) * | 1979-02-02 | 1980-08-11 | Shin Meiwa Ind Co Ltd | Underwater blower |
DE3047699A1 (de) * | 1980-12-18 | 1982-07-01 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | Waelzkolbenpumpe mit druckausgleichskammer |
-
1985
- 1985-05-30 GB GB858513684A patent/GB8513684D0/en active Pending
-
1986
- 1986-05-09 GB GB08611363A patent/GB2175956A/en not_active Withdrawn
- 1986-05-23 JP JP61118967A patent/JPS6217389A/ja active Granted
- 1986-05-27 IT IT20580/86A patent/IT1188739B/it active
- 1986-05-28 DE DE19863617889 patent/DE3617889A1/de active Granted
- 1986-05-29 FR FR8607733A patent/FR2582741A1/fr active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE415913C (de) * | 1922-04-01 | 1925-07-10 | Siemens Schuckertwerke G M B H | Einrichtung an Drehkolbenpumpen fuer gasfoermige Koerper zur Verminderung der Undichtigkeitsverluste durch Umstroemen |
GB596064A (en) * | 1945-07-17 | 1947-12-24 | Stothert & Pitt Ltd | Improvements in or relating to rotary pumps |
US3265292A (en) * | 1965-01-13 | 1966-08-09 | Svenska Rotor Maskiner Ab | Screw rotor machine |
US4329126A (en) * | 1977-11-11 | 1982-05-11 | Kobe Steel Limited | Method for preventing a leakage loss of gases in a screw compressor |
GB2088957A (en) * | 1980-12-05 | 1982-06-16 | Boc Ltd | Rotary positive-displacement Fluid-machines |
GB2111126A (en) * | 1981-12-09 | 1983-06-29 | British Oxygen Co Ltd | Rotary positive-displacement fluid-machines |
EP0126477A1 (de) * | 1983-05-20 | 1984-11-28 | NIPPON PISTON RING CO., Ltd. | Vorrichtung für das Wellenlager eines Kompressorrotors mit beweglichen Flügeln |
Also Published As
Publication number | Publication date |
---|---|
JPH0368237B2 (de) | 1991-10-25 |
IT1188739B (it) | 1988-01-28 |
GB8611363D0 (en) | 1986-06-18 |
IT8620580A0 (it) | 1986-05-27 |
JPS6217389A (ja) | 1987-01-26 |
DE3617889A1 (de) | 1986-12-04 |
DE3617889C2 (de) | 1991-03-14 |
GB2175956A (en) | 1986-12-10 |
IT8620580A1 (it) | 1987-11-27 |
GB8513684D0 (en) | 1985-07-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0368122B1 (de) | Mehrstufige Roots-Vakuumpumpe | |
FR2582741A1 (fr) | Pompe mecanique a plusieurs etages comportant des conduits centraux pour empecher les fuites de gaz | |
EP3921515B1 (de) | Mehrstufiges pumpengehäuse und mehrstufige gaspumpe | |
FR2495701A1 (fr) | Pompe mecanique, notamment pour obtenir un vide pousse | |
CA2811409A1 (fr) | Systeme de pressurisation des enceintes de paliers des turbomachines par de l'air preleve dans la manche d'entree | |
FR3035164B1 (fr) | Transmission | |
FR2689185A1 (fr) | Ensemble à pompe à huile pour moteur. | |
EP0008260A1 (de) | Turbinenpumpe | |
JPH0230989A (ja) | 真空ポンプ装置 | |
FR2517755A1 (fr) | Pompe mecanique perfectionnee a vide pousse | |
JPH079239B2 (ja) | スクリュー真空ポンプ | |
FR2548752A1 (fr) | Joint liquide pour gaz avec balayage de fluide | |
EP1006281A1 (de) | Mehrstufige Roots-Pumpe | |
JPH0255892A (ja) | スクリュ式真空ポンプ | |
FR2642479A1 (fr) | Pompe a vide du type roots, multietagee | |
FR3073567A1 (fr) | Systeme de deux turbocompresseurs relies en serie | |
FR3079886A1 (fr) | Pompe a vide de type seche | |
FR3106630A1 (fr) | Pompe à vide sèche | |
WO2004097222A1 (fr) | Pompe a vis reversible | |
EP1249610A1 (de) | Dynamischer Auslassgeräuschdämpfer für Drehkolben-Vakuummaschinen | |
JPH07229489A (ja) | 真空ポンプの補助室排気装置 | |
JPH09273479A (ja) | 斜板式圧縮機の油ポンプ装置 | |
JPH061790U (ja) | オイルフリースクリュ圧縮機 | |
JPS62153592A (ja) | 2段ガスバラストポンプの減圧軸封装置 | |
JPH048891A (ja) | 多段ルーツ型真空ポンプ |