EP0391182A3 - Vacuum pump - Google Patents
Vacuum pump Download PDFInfo
- 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- Withdrawn
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.
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)
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)
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)
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 |
-
1989
- 1989-04-07 DE DE19893911314 patent/DE3911314A1/en not_active Withdrawn
-
1990
- 1990-03-24 EP EP19900105628 patent/EP0391182A3/en not_active Withdrawn
- 1990-04-06 JP JP9049690A patent/JPH02286895A/en active Pending
Patent Citations (4)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): CH DE FR GB LI |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): CH DE FR GB LI |
|
17P | Request for examination filed |
Effective date: 19910607 |
|
17Q | First examination report despatched |
Effective date: 19920526 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19921206 |