EP0391182A3 - Vacuum pump - Google Patents

Vacuum pump Download PDF

Info

Publication number
EP0391182A3
EP0391182A3 EP19900105628 EP90105628A EP0391182A3 EP 0391182 A3 EP0391182 A3 EP 0391182A3 EP 19900105628 EP19900105628 EP 19900105628 EP 90105628 A EP90105628 A EP 90105628A EP 0391182 A3 EP0391182 A3 EP 0391182A3
Authority
EP
European Patent Office
Prior art keywords
piston
housing
plastic
vacuum pump
area
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Withdrawn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
EP19900105628
Other languages
German (de)
French (fr)
Other versions
EP0391182A2 (en
Inventor
Heiko Borhau
Heinz Frings
Helmut Gormanns
Karl-Heinz Ronthaler
Ralf Stefens
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.)
Balzers und Leybold Deutschland Holding AG
Original Assignee
Leybold AG
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 Leybold AG filed Critical Leybold AG
Publication of EP0391182A2 publication Critical patent/EP0391182A2/en
Publication of EP0391182A3 publication Critical patent/EP0391182A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F01C21/104—Stators; Members defining the outer boundaries of the working chamber
    • F01C21/106—Stators; Members defining the outer boundaries of the working chamber with a radial surface, e.g. cam rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • 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
    • F04C18/082—Details specially related to intermeshing engagement type pumps
    • F04C18/084—Toothed wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

Die Erfindung bezieht sich auf eine Vakuumpumpe mit einem Gehäuse (1), mit einem im Gehäuse ausgebildeten Schöpfraum (3), mit mindestens einem im Schöpfraum rotierenden Kolben (4, 21, 22, 27, 35, 36) und mit einer den Kolben durchsetzenden Welle (15, 23, 24, 33, 37, 38), wobei Gehäuse und/oder Kolben unter Verwendung von Kunststoff derart hergestellt sind, daß das Gehäuse zumindest im Bereich seiner peripheren Schöpfrauminnenwandung und/oder der Kolben zumindest im Bereich seiner peripheren Oberfläche aus Kunststoff bestehen; um Dehnungen der Kolben aufgrund von Flieh­ kräften und/oder Verformungen der Gehäusewandungen aufgrund von Druckdifferenzen zu vermeiden, wird vorgeschlagen, daß der Kunststoff mit einer Verstärkung (2, 16, 17, 20 25, 28, 29, 39, 41) ausgerüstet ist. The invention relates to a vacuum pump with a housing (1), with a scooping space (3) formed in the housing, with at least one piston (4, 21, 22, 27, 35, 36) and with a shaft passing through the piston (15, 23, 24, 33, 37, 38), using the housing and / or piston are made of plastic such that the housing at least in the area of its peripheral inner wall and / or the Piston at least in the area of its peripheral surface Consist of plastic; about piston expansion due to fleeing forces and / or deformations of the housing walls due to To avoid pressure differences, it is proposed that the Plastic with a reinforcement (2, 16, 17, 20 25, 28, 29, 39, 41) is equipped.

EP19900105628 1989-04-07 1990-03-24 Vacuum pump Withdrawn EP0391182A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893911314 DE3911314A1 (en) 1989-04-07 1989-04-07 VACUUM PUMP
DE3911314 1989-04-07

Publications (2)

Publication Number Publication Date
EP0391182A2 EP0391182A2 (en) 1990-10-10
EP0391182A3 true EP0391182A3 (en) 1991-01-16

Family

ID=6378097

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900105628 Withdrawn EP0391182A3 (en) 1989-04-07 1990-03-24 Vacuum pump

Country Status (3)

Country Link
EP (1) EP0391182A3 (en)
JP (1) JPH02286895A (en)
DE (1) DE3911314A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439724A1 (en) * 1994-11-09 1996-05-15 Leybold Ag Twin shaft mangle useful esp. for avoiding hydrocarbon emissions
EP1948938B1 (en) * 2005-11-09 2009-02-25 ixetic Hückeswagen GmbH Pump with a cylindrical cooling bush
DE102005057618A1 (en) * 2005-12-02 2007-06-06 Pfeiffer Vacuum Gmbh Method for operating a vacuum pump
GB2440944B (en) * 2006-08-11 2011-10-12 Itt Mfg Enterprises Inc Rotary lobe pump
KR101016085B1 (en) * 2009-01-12 2011-02-17 유종욱 High-Pressure PUMP
CN102808767B (en) * 2011-06-02 2017-09-01 伊顿公司 Simplified root's blower
WO2016038746A1 (en) * 2014-09-12 2016-03-17 三桜工業株式会社 Negative pressure pump and cylinder head cover

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002518A1 (en) * 1970-01-21 1971-07-29 Vogelsang Hugo Fa Thick matter or slurry pump
FR2527702A1 (en) * 1982-05-28 1983-12-02 Danger Roger Compressor with rotary blades - has plastics lobes moulded on to rotor shafts equal in number to blades
DE3321718A1 (en) * 1983-06-16 1984-12-20 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar ROLLING PISTON PUMP
EP0303553A2 (en) * 1987-08-12 1989-02-15 United Technologies Corporation Hybrid composite compressor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519588A (en) * 1943-12-24 1950-08-22 Borg Warner Pump housing
FR1285311A (en) * 1961-01-09 1962-02-23 Compteurs Comp D Improvements to rotary pistons of pumps, compressors or volumetric meters
US3514238A (en) * 1968-09-16 1970-05-26 Black & Decker Mfg Co Cylinder for fluid pump motor and the like and method of making
JPS5720852Y2 (en) * 1978-05-22 1982-05-06
JPS58192991A (en) * 1982-05-06 1983-11-10 Nippon Denso Co Ltd Rotary type compressor
IT1179910B (en) * 1984-04-16 1987-09-16 Gilardini Spa VOLUMETRIC COMPRESSOR FOR ENDOTHERMAL MOTOR VEHICLE SUPPLY
DE3712354A1 (en) * 1986-11-08 1988-05-11 Wankel Gmbh ROTARY PISTON BLOWER
JPS63177188A (en) * 1987-01-19 1988-07-21 Canon Inc Board writing copying device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2002518A1 (en) * 1970-01-21 1971-07-29 Vogelsang Hugo Fa Thick matter or slurry pump
FR2527702A1 (en) * 1982-05-28 1983-12-02 Danger Roger Compressor with rotary blades - has plastics lobes moulded on to rotor shafts equal in number to blades
DE3321718A1 (en) * 1983-06-16 1984-12-20 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar ROLLING PISTON PUMP
EP0303553A2 (en) * 1987-08-12 1989-02-15 United Technologies Corporation Hybrid composite compressor

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, M sektion, Band 12, Nr. 364, September 29, 1988, THE PATENT OFFICE JAPANESE GOVERNMENT, Seite 13 (M-747); & JP-A-63 177 188 (AISIN) *
PATENT ABSTRACTS OF JAPAN, unexamined applications, M Sektion, Band 8, Nr. 37, Februar 17, 1984, THE PATENT OFFICE JAPANESE GOVERNMENT, Seite 28 (M-277); & JP-A-58 192 991 (NIPPON DENSO) *

Also Published As

Publication number Publication date
DE3911314A1 (en) 1990-10-11
JPH02286895A (en) 1990-11-27
EP0391182A2 (en) 1990-10-10

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