EP1232344A1 - Vakuumpumpe mit auslass - Google Patents
Vakuumpumpe mit auslassInfo
- Publication number
- EP1232344A1 EP1232344A1 EP00962358A EP00962358A EP1232344A1 EP 1232344 A1 EP1232344 A1 EP 1232344A1 EP 00962358 A EP00962358 A EP 00962358A EP 00962358 A EP00962358 A EP 00962358A EP 1232344 A1 EP1232344 A1 EP 1232344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vacuum pump
- outlet
- pump
- push
- connection
- 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
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
- 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
Definitions
- the invention relates to a vacuum pump with an inlet and an outlet, which are equipped with connecting devices for connecting lines.
- the inlet of a vacuum pump is connected to the device to be evacuated via flexible lines which are detachably connected to the inlet of the vacuum pump.
- the outlet of a vacuum pump must also be able to be connected to connecting lines, be it in order to be able to discharge the pumped gases (particularly if they are aggressive or toxic) or to the vacuum pump if it is a high-vacuum pump to be able to connect a backing pump.
- the connection of the connection lines to the inlet or outlet of the vacuum pump must be as tight as possible in order to prevent the entry of leakage air or the escape of harmful gases.
- flange components for the vacuum-tight connection of vacuum pumps with supply or further lines (DE-A-24 16 808).
- a pump connecting end with a flange is usually provided.
- the line to be connected to the connecting piece also has a flange.
- the connection is established by placing the two flanges on top of each other and fixing them in this position with the help of a clamping ring or other flange connection components.
- sealing rings made of plastic, rubber or metal are provided for vacuum-tight connections of this type. These are located between the respective sealing surfaces. With the help of grooves, centering rings or the like, they are held in their desired position.
- the object of the present invention is to make the connection geometry of the tight connection between a vacuum pump and a line more user-friendly and flexible.
- Push-in fittings of the type concerned here are known per se (see, for example, push-in fittings from Camozzi Pneumatik). So far they have only been used in printing air technology used. Surprisingly, however, they have also proven to be vacuum-tight. They consist of a section that can be screwed into the housing of the vacuum pump and an approximately cup-shaped section that enables a tight, detachable connection of the vacuum pump to the free end of a plastic tube or hose. The tube is inserted into the pot-shaped section with one hand until it passes through an O-ring located inside the component and has reached a mechanical stop. Part of the pot-shaped section is a sleeve-shaped collet acting on the circumference of the plastic tube, which can be released by an axial movement.
- connection lines are made of a flexible material (e.g. plastics such as polyamide, polyurethane, etc. or rubber).
- FIGS. 1 and 2 Show it
- Figure 1 shows a section through a backing pump
- FIG. 2 shows a partial section through a high vacuum pump (turbomolecular pump) with an outlet designed according to the invention.
- rotary vane vacuum pump 1 shown in FIG. 1, its housing is denoted by 2, its pump chamber by 3, its rotor system by 4, its inlet by 5 and its outlet by 6.
- Inlet 5 and outlet 6 are equipped with connection devices 7 and 8, which are designed as push-in fittings 9.
- the thread 11 of the push-in fittings 9 is screwed into the inlet channel 12 and outlet channel 13, respectively, which are equipped with corresponding counter threads 14 and 15 for this purpose.
- Many other vacuum-tight connections between the vacuum pump and push-in fitting e.g. welding, soldering, other thread designs
- the use of the thread that is already present on commercially available push-in fittings is particularly simple.
- the cross section of the inlet duct 12 is larger than the cross section of the outlet duct 13. This also applies to the cross sections of the associated push-in fittings 9.
- the push-in fittings 9 comprise the section 17 which can be screwed into the housing 2 and an approximately cup-shaped section 18 which is located outside the housing 2 and in which the axially displaceable collets 19 and an O-ring 21 are located.
- the collet 19 is a sleeve slotted on the O-ring side with a bead 20 facing the O-ring, to which an incline 22 is assigned on the inside of the pot-shaped section 18.
- the bevel 22 is designed in such a way that it braces a line 23 located in the sleeve, when traction is exerted on it. The tension is released by axially displacing the collet 19 in the direction of the O-ring 21.
- a turbomolecular vacuum pump 30 is partially shown in FIG. 2 as an example of a high vacuum pump. Its housing is designated by 31, the stator pack arranged therein by 32, the rotor by 33, the rotor shaft by 34 and the drive motor by 35.
- the shaft 34 is supported by the bearings 36 in the housing 1.
- a push-in fitting 9 is provided, as was described for FIG. 1. Its section 17 is screwed into the outlet channel 38 in the housing 31 of the pump 30. Its cup-shaped section 18 takes, inter alia, line 23 on.
- the push-in fitting 9 described has proven to be vacuum-tight under the conditions that the flexible material of the line 23 is suitable for enduring temperatures up to 80 ° C.
- its surface roughness must be able to be selected such that the line 23, together with an O-ring 21 usually used in vacuum technology, can ensure a vacuum-tight separation. This is the case with a roughness of less than or equal to R z 16, preferably R z 10. Surfaces from R z 4 to R z 16 should also be free of cross grooves.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Non-Positive Displacement Air Blowers (AREA)
- Compressor (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29920737U DE29920737U1 (de) | 1999-11-26 | 1999-11-26 | Vakuumpumpe mit Auslass |
DE29920737U | 1999-11-26 | ||
PCT/EP2000/008200 WO2001038742A1 (de) | 1999-11-26 | 2000-08-23 | Vakuumpumpe mit auslass |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1232344A1 true EP1232344A1 (de) | 2002-08-21 |
EP1232344B1 EP1232344B1 (de) | 2006-07-19 |
Family
ID=8082097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00962358A Expired - Lifetime EP1232344B1 (de) | 1999-11-26 | 2000-08-23 | Vakuumpumpe mit auslass |
Country Status (5)
Country | Link |
---|---|
US (1) | US6948921B1 (de) |
EP (1) | EP1232344B1 (de) |
JP (1) | JP2003515060A (de) |
DE (2) | DE29920737U1 (de) |
WO (1) | WO2001038742A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10110368A1 (de) * | 2001-03-03 | 2002-09-12 | Leybold Vakuum Gmbh | Vakuumpumpe mit Schöpfraum und Austritt |
DE10237166B4 (de) * | 2001-08-24 | 2015-11-05 | Magna Powertrain Hückeswagen GmbH | Pumpe, insbesondere Vakuumpumpe |
US20040193208A1 (en) * | 2003-03-27 | 2004-09-30 | Scimed Life Systems, Inc. | Radiopaque embolic protection filter membrane |
DE102004034926B3 (de) * | 2004-07-09 | 2005-12-29 | Joma-Hydromechanic Gmbh | Einflügelvakuumpumpe |
JP2014015906A (ja) * | 2012-07-10 | 2014-01-30 | Hitachi Automotive Systems Ltd | ポンプ装置 |
CN104514721B (zh) * | 2013-09-27 | 2018-01-19 | 珠海格力节能环保制冷技术研究中心有限公司 | 吸气结构和轴向吸气式涡旋压缩机及装配方法 |
IT201700000309A1 (it) * | 2017-01-03 | 2017-04-03 | Agilent Tech Inc A Delaware Corporation | Gruppo di collegamento per connessioni da vuoto |
CN110345071B (zh) * | 2019-08-26 | 2023-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | 压缩机柔性密封结构及压缩机 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2263293A (en) * | 1940-07-03 | 1941-11-18 | Romort Mfg Company | Quick action coupling |
US3112012A (en) * | 1960-03-23 | 1963-11-26 | Woodrow E Hoch | Crankcase draining unit |
US3469599A (en) * | 1967-09-12 | 1969-09-30 | Murray Corp | Universal fittings for attachment to compressor heads and the like |
DE2416808B2 (de) | 1974-04-06 | 1977-11-03 | Leybold-Heraeus GmbH & Co KG, 5000 Köln | Vakuumdichtung |
DE2937443C2 (de) | 1979-09-15 | 1984-09-20 | Robert Bosch Gmbh, 7000 Stuttgart | Mit einem Gewindeanschluß versehenes Gehäuse aus Kunststoff, insbesondere Ventilgehäuse |
JPS56132483A (en) * | 1980-03-19 | 1981-10-16 | Sano Kiko Kk | Conduit for vacuum exhaust equipment |
DE3143041A1 (de) | 1981-10-30 | 1983-05-05 | Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover | Einrichtung zur loesbaren befestigung einer druckmittelleitung an einem druckmittelanschluss |
US4685706A (en) * | 1985-03-04 | 1987-08-11 | Clevite Industries Inc. | Releasable push-to-connect tube fitting |
US4621842A (en) * | 1985-03-04 | 1986-11-11 | Imperial Clevite Inc. | Releasable push-to-connect tube fitting |
DE3710782A1 (de) | 1987-03-31 | 1988-10-20 | Vacuubrand Gmbh & Co | Verfahren und vorrichtung zum abpumpen von daempfen und/oder dampfhaltigen gemischen und/oder gas-dampf-gemischen oder dgl. medien |
US5326072A (en) * | 1988-02-03 | 1994-07-05 | Hans Oetiker Ag, Maschinen-Und Apparatefabrik | Plug-in safety coupling, in particular for compressed air lines |
DE4108221C2 (de) | 1991-03-14 | 1998-09-03 | Festo Ag & Co | Dichtring |
DE9316834U1 (de) | 1993-11-04 | 1994-01-13 | ITV Industrie-Teile Vertrieb GmbH, 33729 Bielefeld | Steckverbinder für einen Druckluftschlauch |
US5624394A (en) * | 1994-10-28 | 1997-04-29 | Iolab Corporation | Vacuum system and a method of operating a vacuum system |
DE4444582A1 (de) | 1994-12-14 | 1996-06-20 | Roemer J C Avs Gmbh | Steckverbinder zum Verbinden eines Kunststoffrohres mit einem Anschlußteil |
DE29613207U1 (de) | 1996-07-31 | 1996-09-19 | Rosenberg, Gerhard, 57439 Attendorn | Kunststoffrohr-Steckverschraubung für Sanitär und Heizung |
US6099270A (en) * | 1997-08-29 | 2000-08-08 | Oil-Rite Corporation | Single-piece piston for use in a pneumatically-activated pump |
DE19755429A1 (de) | 1997-12-13 | 1999-06-17 | Wabco Gmbh | Gehäuse mit einem Druckmittelanschluß für eine Druckmittelleitung |
DE10237166B4 (de) * | 2001-08-24 | 2015-11-05 | Magna Powertrain Hückeswagen GmbH | Pumpe, insbesondere Vakuumpumpe |
-
1999
- 1999-11-26 DE DE29920737U patent/DE29920737U1/de not_active Expired - Lifetime
-
2000
- 2000-08-23 US US10/130,638 patent/US6948921B1/en not_active Expired - Fee Related
- 2000-08-23 EP EP00962358A patent/EP1232344B1/de not_active Expired - Lifetime
- 2000-08-23 JP JP2001540057A patent/JP2003515060A/ja active Pending
- 2000-08-23 WO PCT/EP2000/008200 patent/WO2001038742A1/de active IP Right Grant
- 2000-08-23 DE DE50013199T patent/DE50013199D1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO0138742A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003515060A (ja) | 2003-04-22 |
EP1232344B1 (de) | 2006-07-19 |
US6948921B1 (en) | 2005-09-27 |
DE50013199D1 (de) | 2006-08-31 |
WO2001038742A1 (de) | 2001-05-31 |
DE29920737U1 (de) | 2000-02-03 |
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