FR2517755A1 - Pompe mecanique perfectionnee a vide pousse - Google Patents

Pompe mecanique perfectionnee a vide pousse Download PDF

Info

Publication number
FR2517755A1
FR2517755A1 FR8220574A FR8220574A FR2517755A1 FR 2517755 A1 FR2517755 A1 FR 2517755A1 FR 8220574 A FR8220574 A FR 8220574A FR 8220574 A FR8220574 A FR 8220574A FR 2517755 A1 FR2517755 A1 FR 2517755A1
Authority
FR
France
Prior art keywords
rotors
pair
mechanical pump
compartment
pumping chamber
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.)
Withdrawn
Application number
FR8220574A
Other languages
English (en)
French (fr)
Inventor
Wycliffe Henryk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BOC Group Ltd
Original Assignee
BOC Group Ltd
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
Application filed by BOC Group Ltd filed Critical BOC Group Ltd
Publication of FR2517755A1 publication Critical patent/FR2517755A1/fr
Withdrawn legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary-Type Compressors (AREA)
FR8220574A 1981-12-09 1982-12-08 Pompe mecanique perfectionnee a vide pousse Withdrawn FR2517755A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08137164A GB2111126A (en) 1981-12-09 1981-12-09 Rotary positive-displacement fluid-machines

Publications (1)

Publication Number Publication Date
FR2517755A1 true FR2517755A1 (fr) 1983-06-10

Family

ID=10526496

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8220574A Withdrawn FR2517755A1 (fr) 1981-12-09 1982-12-08 Pompe mecanique perfectionnee a vide pousse

Country Status (4)

Country Link
JP (1) JPS6020595B2 (enrdf_load_stackoverflow)
DE (1) DE3244099A1 (enrdf_load_stackoverflow)
FR (1) FR2517755A1 (enrdf_load_stackoverflow)
GB (1) GB2111126A (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6097395U (ja) * 1983-12-12 1985-07-03 大亜真空技研株式会社 ドライ真空ポンプ
DE3405509A1 (de) * 1983-12-20 1985-06-27 Herold & Co GmbH, 8586 Gefrees Verdraengerpumpe
DE3413892A1 (de) * 1984-02-24 1985-09-05 Multimatic Maschinen GmbH & Co, 4520 Melle Vorrichtung zum destillieren verschmutzter loesemittel oder dergleichen
GB8513684D0 (en) * 1985-05-30 1985-07-03 Boc Group Plc Mechanical pumps
JPS6221494U (enrdf_load_stackoverflow) * 1985-07-23 1987-02-09
GB2185288A (en) * 1986-01-11 1987-07-15 Fleming Thermodynamics Ltd Screw type compression and expansion machine
JPS63303185A (ja) * 1987-05-30 1988-12-09 Yoshimitsu Saito 人造レザ−類の柔軟加工及び皺付加工法とその機械装置
US4943215A (en) * 1988-02-29 1990-07-24 Leybold Aktiengesellschaft Multistage vacuum pump with bore for fouling removal
EP0370117B1 (de) * 1988-10-24 1994-01-12 Leybold Aktiengesellschaft Zweiwellenvakuumpumpe und Verfahren zu ihrem Betrieb
EP0365695B1 (de) * 1988-10-24 1992-11-25 Leybold Aktiengesellschaft Zweiwellenvakuumpumpe mit Schöpfraum
DE59010310D1 (de) 1990-03-27 1996-06-05 Leybold Ag Mehrstufige trockenverdichtende Vakuumpumpe und Verfahren zu ihrem Betrieb
GB9222227D0 (en) * 1992-10-22 1992-12-02 Boc Group Plc Improvements in vacuum pumps
GB9604486D0 (en) * 1996-03-01 1996-05-01 Boc Group Plc Improvements in vacuum pumps
GB0319300D0 (en) * 2003-08-18 2003-09-17 Boc Group Plc Low pulsation booster pumps
DE202011104491U1 (de) * 2011-08-17 2012-11-20 Oerlikon Leybold Vacuum Gmbh Wälzkolbenpumpe
CN103104491A (zh) * 2011-11-11 2013-05-15 中国科学院沈阳科学仪器研制中心有限公司 一种罗茨和爪式转子组合多级干式真空泵
DE102018203992A1 (de) 2018-03-15 2019-09-19 Gardner Denver Schopfheim Gmbh Drehkolbenmaschine

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE538256C (de) * 1930-02-25 1931-11-12 Griffith Thomas Mehrfachdrehkolbenpumpe (Verdichter)
GB479199A (en) * 1936-08-01 1938-02-01 Edward Dodson Improvements in or connected with rotary pumps
GB596064A (en) * 1945-07-17 1947-12-24 Stothert & Pitt Ltd Improvements in or relating to rotary pumps
GB818691A (en) * 1957-05-20 1959-08-19 Lacy Hulbert & Company Improvements in rotary air pumps
US3199771A (en) * 1961-10-19 1965-08-10 Becker G M B H Geb Multicell machine operating as a combination pressure-vacuum generator
GB1248032A (en) * 1967-09-21 1971-09-29 Edwards High Vacuum Int Ltd Rotary mechanical vacuum pumps of the intermeshing screw type
GB1284552A (en) * 1969-08-08 1972-08-09 Arthur E Brown Improvements in rotary-positive displacement fluid machines
US3922117A (en) * 1972-11-10 1975-11-25 Calspan Corp Two-stage roots type compressor
GB2088957A (en) * 1980-12-05 1982-06-16 Boc Ltd Rotary positive-displacement Fluid-machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR856614A (fr) * 1938-06-20 1940-07-29 Moteur à combustion interne rotatif
GB735823A (en) * 1952-08-23 1955-08-31 Frank Berry Improvements in or relating to a rotary fluid power device such as a motor or pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE538256C (de) * 1930-02-25 1931-11-12 Griffith Thomas Mehrfachdrehkolbenpumpe (Verdichter)
GB479199A (en) * 1936-08-01 1938-02-01 Edward Dodson Improvements in or connected with rotary pumps
GB596064A (en) * 1945-07-17 1947-12-24 Stothert & Pitt Ltd Improvements in or relating to rotary pumps
GB818691A (en) * 1957-05-20 1959-08-19 Lacy Hulbert & Company Improvements in rotary air pumps
US3199771A (en) * 1961-10-19 1965-08-10 Becker G M B H Geb Multicell machine operating as a combination pressure-vacuum generator
GB1248032A (en) * 1967-09-21 1971-09-29 Edwards High Vacuum Int Ltd Rotary mechanical vacuum pumps of the intermeshing screw type
GB1284552A (en) * 1969-08-08 1972-08-09 Arthur E Brown Improvements in rotary-positive displacement fluid machines
US3922117A (en) * 1972-11-10 1975-11-25 Calspan Corp Two-stage roots type compressor
GB2088957A (en) * 1980-12-05 1982-06-16 Boc Ltd Rotary positive-displacement Fluid-machines

Also Published As

Publication number Publication date
GB2111126A (en) 1983-06-29
JPS58106191A (ja) 1983-06-24
JPS6020595B2 (ja) 1985-05-22
DE3244099A1 (de) 1983-06-23
DE3244099C2 (enrdf_load_stackoverflow) 1987-11-05

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