EP2375074A3 - Rotor for a vacuum pump - Google Patents

Rotor for a vacuum pump Download PDF

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Publication number
EP2375074A3
EP2375074A3 EP11001295.2A EP11001295A EP2375074A3 EP 2375074 A3 EP2375074 A3 EP 2375074A3 EP 11001295 A EP11001295 A EP 11001295A EP 2375074 A3 EP2375074 A3 EP 2375074A3
Authority
EP
European Patent Office
Prior art keywords
rotor
vacuum pump
piston
jacket body
proposed
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.)
Granted
Application number
EP11001295.2A
Other languages
German (de)
French (fr)
Other versions
EP2375074B1 (en
EP2375074A2 (en
Inventor
Sebastian Oberbeck
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.)
Pfeiffer Vacuum GmbH
Original Assignee
Pfeiffer 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 Pfeiffer Vacuum GmbH filed Critical Pfeiffer Vacuum GmbH
Publication of EP2375074A2 publication Critical patent/EP2375074A2/en
Publication of EP2375074A3 publication Critical patent/EP2375074A3/en
Application granted granted Critical
Publication of EP2375074B1 publication Critical patent/EP2375074B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • 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
    • 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
    • F04C2240/00—Components
    • F04C2240/20—Rotors

Abstract

Offenbart wird ein Rotor (10,12;500) für eine Vakuumpumpe mit einem Kolben (38;502,504). Um ein verbessertes Verhältnis von Masse zu Volumen zu erreichen, wird vorgeschlagen, dass der Kolben einen Mantelkörper (40;532,552) und eine mit einer Stirnseite des Mantelkörpers verbundene Deckplatte (42,44;520,526,540,546) aufweist.

Figure imgaf001
Disclosed is a rotor (10, 12, 500) for a vacuum pump with a piston (38, 502, 504). In order to achieve an improved mass-to-volume ratio, it is proposed that the piston has a jacket body (40; 532,552) and a cover plate (42,44; 520,526,540,546) connected to an end face of the jacket body.
Figure imgaf001
EP11001295.2A 2010-03-25 2011-02-17 Rotor for a vacuum pump Active EP2375074B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010012759.0A DE102010012759B4 (en) 2010-03-25 2010-03-25 Rotor for a vacuum pump

Publications (3)

Publication Number Publication Date
EP2375074A2 EP2375074A2 (en) 2011-10-12
EP2375074A3 true EP2375074A3 (en) 2014-11-12
EP2375074B1 EP2375074B1 (en) 2017-11-08

Family

ID=44508515

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11001295.2A Active EP2375074B1 (en) 2010-03-25 2011-02-17 Rotor for a vacuum pump

Country Status (2)

Country Link
EP (1) EP2375074B1 (en)
DE (1) DE102010012759B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014104161A1 (en) * 2014-03-26 2015-10-01 Pfeiffer Vacuum Gmbh Roots

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696509C (en) * 1937-08-12 1940-09-23 Daimler Benz Akt Ges Rotary piston for Roots blower
US2491678A (en) * 1943-12-09 1949-12-20 Borg Warner Rotary blower with abrading casing end walls and abradable rotor end plates
DE810419C (en) * 1949-01-01 1951-08-09 Otto Becker Rotary piston blower
US6164945A (en) * 1998-02-13 2000-12-26 Ebara Corporation Vacuum pump rotor and method of manufacturing the same
EP2042742A1 (en) * 2006-07-19 2009-04-01 Kabushiki Kaisha Toyota Jidoshokki Fluid machine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022091A (en) * 1983-07-16 1985-02-04 Nippon Piston Ring Co Ltd Rotor for rotary fluid pump
DE3321718A1 (en) * 1983-06-16 1984-12-20 Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar ROLLING PISTON PUMP
DE4030702A1 (en) 1990-09-28 1992-04-02 Leybold Ag METHOD FOR PRODUCING A TURNING PISTON FOR A VACUUM PUMP AND TURNING PISTON PRODUCED BY THIS PROCESS
US5895210A (en) * 1996-02-21 1999-04-20 Ebara Corporation Turbo machine rotor made of sheet metal

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE696509C (en) * 1937-08-12 1940-09-23 Daimler Benz Akt Ges Rotary piston for Roots blower
US2491678A (en) * 1943-12-09 1949-12-20 Borg Warner Rotary blower with abrading casing end walls and abradable rotor end plates
DE810419C (en) * 1949-01-01 1951-08-09 Otto Becker Rotary piston blower
US6164945A (en) * 1998-02-13 2000-12-26 Ebara Corporation Vacuum pump rotor and method of manufacturing the same
EP2042742A1 (en) * 2006-07-19 2009-04-01 Kabushiki Kaisha Toyota Jidoshokki Fluid machine

Also Published As

Publication number Publication date
DE102010012759B4 (en) 2018-06-21
EP2375074B1 (en) 2017-11-08
EP2375074A2 (en) 2011-10-12
DE102010012759A1 (en) 2011-09-29

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