WO2014117991A3 - Vacuum pump, in particular rotary-lobe pump - Google Patents

Vacuum pump, in particular rotary-lobe pump Download PDF

Info

Publication number
WO2014117991A3
WO2014117991A3 PCT/EP2014/050459 EP2014050459W WO2014117991A3 WO 2014117991 A3 WO2014117991 A3 WO 2014117991A3 EP 2014050459 W EP2014050459 W EP 2014050459W WO 2014117991 A3 WO2014117991 A3 WO 2014117991A3
Authority
WO
WIPO (PCT)
Prior art keywords
pump
lobe
particular rotary
vacuum pump
passage opening
Prior art date
Application number
PCT/EP2014/050459
Other languages
German (de)
French (fr)
Other versions
WO2014117991A2 (en
Inventor
Dirk STRATMANN
Armin Bertsch
Wolfgang Giebmanns
Original Assignee
Oerlikon Leybold Vacuum Gmbh
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 Oerlikon Leybold Vacuum Gmbh filed Critical Oerlikon Leybold Vacuum Gmbh
Publication of WO2014117991A2 publication Critical patent/WO2014117991A2/en
Publication of WO2014117991A3 publication Critical patent/WO2014117991A3/en

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
    • 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
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • 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
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/50—Conditions before a throttle
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/52—Conditions after a throttle
    • 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
    • F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
    • F04C28/28—Safety arrangements; Monitoring

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Reciprocating Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A vacuum pump such as a rotary-lobe pump has a pump chamber (10) in which pump elements (12) are arranged. A pressure side (30) is connected to a suction side (20) of the pump chamber (10) via a connecting duct (22). Furthermore, a valve device (24) is arranged in a passage opening (32) of the connecting duct (22). To vary the effective cross-sectional area of the passage opening (32), the valve device (24) is, in one of the preferred embodiments, assigned an adjustable aperture device (42).
PCT/EP2014/050459 2013-01-30 2014-01-13 Vacuum pump, in particular rotary-lobe pump WO2014117991A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202013000913.6U DE202013000913U1 (en) 2013-01-30 2013-01-30 Vacuum pump, in particular Roots pump
DE202013000913.6 2013-01-30

Publications (2)

Publication Number Publication Date
WO2014117991A2 WO2014117991A2 (en) 2014-08-07
WO2014117991A3 true WO2014117991A3 (en) 2014-12-31

Family

ID=49956185

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/050459 WO2014117991A2 (en) 2013-01-30 2014-01-13 Vacuum pump, in particular rotary-lobe pump

Country Status (2)

Country Link
DE (1) DE202013000913U1 (en)
WO (1) WO2014117991A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311936A (en) * 1941-04-01 1943-02-23 Gen Motors Corp Engine blower control
US4744734A (en) * 1987-07-20 1988-05-17 Ingersoll-Rand Company Means for controlling air discharge, in an air compressor
US4763636A (en) * 1985-09-30 1988-08-16 Aisin Seiki Kabushiki Kaisha Mechanical supercharger
US5127386A (en) * 1990-06-01 1992-07-07 Ingersoll-Rand Company Apparatus for controlling a supercharger
WO2009074408A2 (en) * 2007-12-13 2009-06-18 Oerlikon Leybold Vacuum Gmbh Vacuum pump, and method for operating a vacuum pump
DE102008034073A1 (en) * 2008-07-22 2010-01-28 Oerlikon Leybold Vacuum Gmbh Vacuum pump i.e. roots pump, has valve opened during exceeding of maximum pressure difference between pressure side and suction side of suction chamber, and valve unit designed as pivotable valve flap

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844019A1 (en) 1978-10-09 1980-04-17 Leybold Heraeus Gmbh & Co Kg VACUUM PUMP, ESPECIALLY RUBBER VACUUM PUMP
DE4136950A1 (en) * 1991-11-11 1993-05-13 Pfeiffer Vakuumtechnik MULTI-STAGE VACUUM PUMP SYSTEM
DE19745448C1 (en) * 1997-10-15 1999-01-21 Zahnradfabrik Friedrichshafen Pressure pump for motor vehicle power steering
DE10160200A1 (en) * 2001-12-07 2003-06-18 Zf Lenksysteme Gmbh Vane pump
DE10356464B4 (en) * 2003-12-04 2007-09-20 Zf Lenksysteme Gmbh Hydraulic steering system
DE102008043246A1 (en) * 2008-10-29 2010-05-06 Zf Lenksysteme Gmbh Hyraulic power steering

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311936A (en) * 1941-04-01 1943-02-23 Gen Motors Corp Engine blower control
US4763636A (en) * 1985-09-30 1988-08-16 Aisin Seiki Kabushiki Kaisha Mechanical supercharger
US4744734A (en) * 1987-07-20 1988-05-17 Ingersoll-Rand Company Means for controlling air discharge, in an air compressor
US5127386A (en) * 1990-06-01 1992-07-07 Ingersoll-Rand Company Apparatus for controlling a supercharger
WO2009074408A2 (en) * 2007-12-13 2009-06-18 Oerlikon Leybold Vacuum Gmbh Vacuum pump, and method for operating a vacuum pump
DE102008034073A1 (en) * 2008-07-22 2010-01-28 Oerlikon Leybold Vacuum Gmbh Vacuum pump i.e. roots pump, has valve opened during exceeding of maximum pressure difference between pressure side and suction side of suction chamber, and valve unit designed as pivotable valve flap

Also Published As

Publication number Publication date
DE202013000913U1 (en) 2014-05-05
WO2014117991A2 (en) 2014-08-07

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