EP0964999B1 - Vakuumpumpe - Google Patents
Vakuumpumpe Download PDFInfo
- Publication number
- EP0964999B1 EP0964999B1 EP98907961A EP98907961A EP0964999B1 EP 0964999 B1 EP0964999 B1 EP 0964999B1 EP 98907961 A EP98907961 A EP 98907961A EP 98907961 A EP98907961 A EP 98907961A EP 0964999 B1 EP0964999 B1 EP 0964999B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- chamber
- gas
- housing
- inlet
- 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.)
- Expired - Lifetime
Links
- 239000007789 gas Substances 0.000 claims description 50
- 239000011261 inert gas Substances 0.000 claims description 5
- 238000010926 purge Methods 0.000 description 7
- 239000002341 toxic gas Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
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
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/14—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B25/00—Multi-stage pumps
-
- 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
- F04C2220/00—Application
- F04C2220/50—Pumps with means for introducing gas under pressure for ballasting
Definitions
- the invention relates to a vacuum pump with at least a scoop and at least one adjacent to the scoop Space, such as engine, drive, transmission, crankshaft or the like room.
- vacuum pumps need to be here Promote corrosive and / or toxic gases. These gases can enter the vacuum pump Adjacent rooms usually arrive through seals (shaft seals, labyrinth seals etc.) are separated from the creative spaces. Corrosive gases cause corrosion or abrasion in these rooms, leading to premature wear of bearings or lead to damage to other components located there. It can also cause corrosive and toxic gases neighboring spaces on the way above the creative spaces Atmosphere. In the semiconductor industry, will the need for dry, that is, at least in relation oil-free vacuum pumps are getting bigger and bigger. The reason for this is that the processes involved in the vacuum chambers connected to the vacuum pumps run off, protected from disruptive hydrocarbons are. The used in the semiconductor industry or resulting gases to be pumped by the vacuum pump often the property during their compression form. Deposits of this type can also be found in the Creative space adjacent rooms may be harmful.
- JP-A-6310 5294 JP-A-6310 5294:
- This document discloses a scroll vacuum pump with a fixed and a rotating component.
- the rotating component is driven by a Drive shaft and a grease-lubricated bearing.
- the warehouse is in a room.
- To evaporation of the Preventing grease becomes one in the storage room Maintain nitrogen atmosphere. Bit by bit the nitrogen penetrates holes in the rotating component and gets into the pump.
- This describes a multi-stage claw vacuum pump.
- This has an inert gas supply.
- the inert gas is fed to one or more pump stages to prevent that getting into or during the pump the compression of the gases into the pump Solid particles not on the rotors or walls of the scoops.
- the ballast gas becomes one of the two stages fed directly to the pump via the line.
- the present invention is based on the object to design a vacuum pump of the type mentioned at the outset, that the dangers of causing damage in the rooms adjacent to the creative rooms as well as the Escape of corrosive or toxic gases from the Vacuum pump are largely eliminated.
- a vacuum pump according to this invention has an outer gas ballast or purge gas inlet and one immediately on Gas inlet housing located. Between gas inlet and gas inlet are the or the flushing rooms adjacent to the creative space. At a Pump designed in the specified manner has that gas entering via the gas ballast inlet has the effect to rinse the room or rooms adjacent to the creative space. Corrosive or toxic gases penetrate through seals; which their sealing function is not or no longer completely meet in the adjacent to the creative space Space, then together with the ballast or purge gas is pumped back into the pump before it Can cause damage or get into the atmosphere.
- Another advantage of the invention is that that the designer regarding the choice of location the gas ballast or purge gas inlet more options be available. Finally, on Gas inlet located gas inlet constantly open be held so that the adjacent to the scoop Room sets a negative pressure. The danger, that toxic or corrosive Gases from leaks in the outer housing penetrate outside is further reduced.
- the rotary vane vacuum pump shown in Figure 1 includes a scoop chamber 1 and a drive motor 2.
- the scoop chamber 1 is located in the pump room 3, formed by the outer housing 4, the engine in the engine compartment 5, formed by the motor housing 6, which to the outer pump housing 4 is flanged.
- In the chamber 1 are the scoops 7 and 8 with their rotors 9 and 10.
- the rotors 9 and 10 are on the motor shaft 11 attached, which is stored several times in the scoop chamber 2 and is sealed.
- the larger level 7, 9 of the Pump is the inlet stage and stands with inlet 12 in connection.
- the outlet 13 is at the outlet stage 8, 10 connected. Entry level 7, 9 and exit level 8, 10 are interconnected via the bore 14.
- In this bore 14 opens the bore 15. It stands with the pump chamber 3 in connection and is referred to as designated gas ballast or purge gas inlet.
- the gas ballast outside the pump or purge gas inlet is designated 16. It includes the valve 17 and the throttle 18.
- the gas inlet 16 is attached to the motor housing 6 in an area remote from the pump housing 4.
- the valve 17 When the valve 17 is open, that is to say during a gas ballast or flushing operation, the gas flows through the engine compartment 5 and through the pump compartment 3 to the inlet of the bore 15, the gas inlet located directly on the pump chamber housing. Gases entering the pump or engine compartment through leaky shaft seals are flushed back into outlet stage 8, 10. If necessary, baffles and / or a plurality of inlet connections 16 can be present in order to ensure complete flushing of the spaces adjacent to the scooping spaces 7, 8.
- An inert gas storage container can also be connected to the inlet connection 16 if an inert gas, for example N 2 , is to be flushed or gas ballast is to be generated.
- the ballast gas or purge gas inlet 15 near the pumping chamber is constantly open to pump room 3. Is the valve 17 closed, turns up in the pump room 3 and in the engine compartment 5 a vacuum. In the pump room 3 and the engine room 5 gases can leak through the housings 4, 6 do not penetrate to the outside. With open Valve 16 maintains throttle 18 a negative pressure in the housings 4 and 6.
- Figure 2 shows a four-stage dry piston vacuum pump with their head space parts 21 and 22, in which are the cylindrical scoops 23 to 26. Is located between the housing parts 21, 22 the crankshaft chamber 27, the housing designated 28 is.
- the pistons 31 to 34 are stepped and form eight pump chambers, some of which are connected in parallel are, so that the pump shown four pump stages Has. Your entrance is 35, your outlet is 36 designated.
- the last annular pump chamber forms the last stage of the vacuum pump shown. Your entrance is designated 37, its outlet 38.
- the last stage inlet 37 of the pump protrudes the line 39 with the crankshaft space 27 in connection. Your mouth forms the gas inlet close to the pumping chamber 41. It is located near one end of the Crankshaft housing 28. In the area of the opposite Side of the crankshaft housing 28 is the Gas ballast or purge gas inlet 16 with valve 17 and Throttle 18. In the one already described for FIG. 1 Way can flow in through the gas inlet 16 Gas flushed the crankshaft chamber 27 and a negative pressure therein be maintained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Description
- Figur 1 eine zweistufige Drehschiebervakuumpumpe und
- Figur 2 eine vierstufige Kolbenvakuumpumpe.
Claims (11)
- Vakuumpumpe mit mindestens einem Schöpfraum (7, 8, 23 bis 26), und einer Gasballasteinrichtung,bei welcher in einem äußeren Gehäuse (4) ein Pumpengehäuse (1) angeordnet ist, in dem sich der Schöpfraum (7, 8, 23 bis 26) befindet, undbei welcher mindestens ein dem Schöpfraum benachbarter Raum (3, 5, 27) vorhanden ist,einen schöpfraumnahen Gasballasteintritt (15, 41), der als das Pumpengehäuse (4) durchsetzende Verbindung zwischen dem Schöpfraum (7, 8, 23 bis 26) und einem benachbarten Raum (3, 5, 27) ausgebildet ist;einen vom Schöpfraumgehäuse (1) entfernten Gasballasteinlass (16), der am Gehäuse (4, 6) eines dem Schöpfraum (7, 8, 23 bis 26) benachbarten Raumes (3, 5, 27) angeordnet ist und mit einem Ventil (17) ausgerüstet ist;der dem Schöpfraum benachbarte Raum (3, 5, 27) befindet sich zumindest teilweise zwischen Gasballasteinlass (16) und Gasballasteintritt (15, 41).
- Pumpe nach Anspruch 1, dadurch gekennzeichnet, dass der Gasballasteinlass (16) neben dem Ventil (17) mit einer Drossel (18) ausgerüstet ist.
- Pumpe nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass mehrere Gaseinlässe (16) an verschiedenen Stellen der Pumpe vorgesehen sind.
- Pumpe nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass der oder die Gaseinlässe (16) mit einem Inertgas-Vorratsbehälter in Verbindung stehen.
- Pumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sie als Drehschiebervakuumpumpe ausgebildet ist.
- Pumpe nach Anspruch 6, dadurch gekennzeichnet, dass sie zweistufig ausgebildet ist, dass sie einen Pumpenraum (3) und einen Motorraum (5) aufweist, und dass eine Bohrung (15) vorhanden ist, welche eine Verbindungsbohrung (14) zwischen den beiden Stufen (7, 9 und 8, 10) mit dem Pumpenraum (3) verbindet.
- Pumpe nach Anspruch 7, dadurch gekennzeichnet, dass der Gaseinlass (16) am Motorgehäuse (6) angeordnet ist.
- Pumpe nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie als mehrstufige Kolbenvakuumpumpe ausgebildet ist.
- Pumpe nach Anspruch 9, dadurch gekennzeichnet, dass der Einlass (37) der letzten Pumpenstufe mit einem Kurbelwellenraum (27) in Verbindung steht.
- Pumpe nach Anspruch 10, dadurch gekennzeichnet, dass die Mündung (41) der Leitung (39) in den Kurbelwellenraum (27) und der Gaseinlass (16) in den Bereichen einander gegenüberliegender Stirnseiten des Kurbelwellengehäuses (28) angeordnet sind.
- Pumpe nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie eine trockene Vakuumpumpe ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19709206 | 1997-03-06 | ||
DE19709206A DE19709206A1 (de) | 1997-03-06 | 1997-03-06 | Vakuumpumpe |
PCT/EP1998/000288 WO1998039570A1 (de) | 1997-03-06 | 1998-01-20 | Vakuumpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0964999A1 EP0964999A1 (de) | 1999-12-22 |
EP0964999B1 true EP0964999B1 (de) | 2002-09-25 |
Family
ID=7822465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98907961A Expired - Lifetime EP0964999B1 (de) | 1997-03-06 | 1998-01-20 | Vakuumpumpe |
Country Status (7)
Country | Link |
---|---|
US (1) | US6123516A (de) |
EP (1) | EP0964999B1 (de) |
JP (1) | JP4067572B2 (de) |
KR (1) | KR100592161B1 (de) |
CN (1) | CN1133813C (de) |
DE (2) | DE19709206A1 (de) |
WO (1) | WO1998039570A1 (de) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000170680A (ja) * | 1998-09-30 | 2000-06-20 | Aisin Seiki Co Ltd | 真空ポンプ |
DE19921711A1 (de) * | 1999-05-12 | 2000-11-16 | Leybold Vakuum Gmbh | Kolbenvakuumpumpe |
DE19945241A1 (de) * | 1999-09-21 | 2001-04-05 | Messer Griesheim Gmbh | Verfahren zur schonenden Verdichtung von hochreinen Gasen |
DE19962445A1 (de) | 1999-12-22 | 2001-06-28 | Leybold Vakuum Gmbh | Trockenverdichtende Vakuumpumpe mit Gasballasteinrichtung |
DE10021454C2 (de) * | 2000-05-03 | 2002-03-14 | Knf Neuberger Gmbh | Vorrichtung zum Fördern feuchter Gase |
DE10127082A1 (de) * | 2001-06-02 | 2002-12-05 | Leybold Vakuum Gmbh | Mehrstufige Kolbenvakuumpumpe und Verfahren zum Betrieb dieser Pumpe |
JP2005163713A (ja) * | 2003-12-04 | 2005-06-23 | Toyota Industries Corp | 流体圧縮機 |
US20070020115A1 (en) * | 2005-07-01 | 2007-01-25 | The Boc Group, Inc. | Integrated pump apparatus for semiconductor processing |
DE102006011577A1 (de) * | 2006-03-10 | 2007-09-13 | Linde Ag | Verdichteranlage mit einem Pufferbehälter |
JP2008088912A (ja) * | 2006-10-03 | 2008-04-17 | Tohoku Univ | メカニカルポンプおよびその製造方法 |
US11692533B2 (en) * | 2007-08-09 | 2023-07-04 | Optimum Power Technology, L.P. | Apparatuses, systems, and methods for improved performance of a pressurized system |
GB0922564D0 (en) * | 2009-12-24 | 2010-02-10 | Edwards Ltd | Pump |
JP6129483B2 (ja) * | 2012-04-19 | 2017-05-17 | 株式会社ミクニ | オイルポンプ |
AT513836B1 (de) * | 2013-09-23 | 2014-08-15 | Hoerbiger Kompressortech Hold | Kompressor mit und Verfahren zur Spülung des Kompressorgehäuses mit Spülgas |
ES2774438T3 (es) * | 2014-06-27 | 2020-07-21 | Ateliers Busch S A | Método de bombeo en un sistema de bombas de vacío y sistema de bombas de vacío |
US10041495B2 (en) * | 2015-12-04 | 2018-08-07 | Clay Valley Holdings Inc. | High volume vacuum pump for continuous operation |
DE202016001950U1 (de) * | 2016-03-30 | 2017-07-03 | Leybold Gmbh | Vakuumpumpe |
DE102016005216A1 (de) * | 2016-04-28 | 2017-11-02 | Linde Aktiengesellschaft | Fluidenergiemaschine |
DE102018203992A1 (de) * | 2018-03-15 | 2019-09-19 | Gardner Denver Schopfheim Gmbh | Drehkolbenmaschine |
EP3959420B1 (de) * | 2019-04-23 | 2023-12-20 | ATLAS COPCO AIRPOWER, naamloze vennootschap | Verdichter oder vakuum pumpenvorrichtung, ein flüssigkeitsrückführsystem für solch einen verdichter oder vakuum pumpenvorrichtung und ein verfahren zum ablassen von flüssigkeit aus einem getriebe eines solchen verdichters oder vakuum pumpenvorrichtung. |
US20230114036A1 (en) * | 2020-02-28 | 2023-04-13 | Desktop Metal, Inc. | Low-Cost High-Purity Vacuum Pumps and Systems |
US20210396236A1 (en) * | 2020-06-18 | 2021-12-23 | Milwaukee Electric Tool Corporation | Vacuum pump with a solenoid valve |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5231369B1 (de) * | 1968-12-23 | 1977-08-15 | ||
JPH0223216Y2 (de) * | 1985-03-13 | 1990-06-25 | ||
DE3520634A1 (de) * | 1985-06-08 | 1986-12-18 | OFRU-Recycling GmbH & Co KG, 6113 Babenhausen | Vorrichtung zum rueckgewinnen von loesungsmittel aus verschmutztem loesungsmittel |
JPH0758077B2 (ja) * | 1986-10-20 | 1995-06-21 | 株式会社日立製作所 | スクロ−ル形真空ポンプ |
US4725204A (en) * | 1986-11-05 | 1988-02-16 | Pennwalt Corporation | Vacuum manifold pumping system |
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 |
JPH01277698A (ja) * | 1988-04-30 | 1989-11-08 | Nippon Ferrofluidics Kk | 複合型真空ポンプ |
DE59200391D1 (de) * | 1991-03-04 | 1994-09-22 | Leybold Ag | Einrichtung zur inertgasversorgung einer mehrstufigen trockenlaufenden vakuumpumpe. |
JPH05231369A (ja) * | 1991-07-09 | 1993-09-07 | Ebara Corp | 多段スクリュー真空ポンプ |
GB9223804D0 (en) * | 1992-11-13 | 1993-01-06 | Boc Group Plc | Improvements in vacuum pumps |
US5482443A (en) * | 1992-12-21 | 1996-01-09 | Commonwealth Scientific And Industrial Research Organization | Multistage vacuum pump |
DE4325281A1 (de) * | 1993-07-28 | 1995-02-02 | Leybold Ag | Vakuumpumpe mit einer Gasballasteinrichtung |
DE4327583A1 (de) * | 1993-08-17 | 1995-02-23 | Leybold Ag | Vakuumpumpe mit Ölabscheider |
DE4442174A1 (de) * | 1994-11-26 | 1996-05-30 | Leybold Ag | Lecksuchgerät mit Vakuumpumpen und Betriebsverfahren dazu |
US5547347A (en) * | 1995-09-21 | 1996-08-20 | The Boc Group, Inc. | Gas injection apparatus and method |
-
1997
- 1997-03-06 DE DE19709206A patent/DE19709206A1/de not_active Withdrawn
-
1998
- 1998-01-20 KR KR1019997007977A patent/KR100592161B1/ko not_active IP Right Cessation
- 1998-01-20 CN CNB988016923A patent/CN1133813C/zh not_active Expired - Fee Related
- 1998-01-20 EP EP98907961A patent/EP0964999B1/de not_active Expired - Lifetime
- 1998-01-20 DE DE59805694T patent/DE59805694D1/de not_active Expired - Lifetime
- 1998-01-20 JP JP53809098A patent/JP4067572B2/ja not_active Expired - Fee Related
- 1998-01-20 WO PCT/EP1998/000288 patent/WO1998039570A1/de not_active Application Discontinuation
- 1998-01-20 US US09/355,222 patent/US6123516A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19709206A1 (de) | 1998-09-10 |
CN1133813C (zh) | 2004-01-07 |
EP0964999A1 (de) | 1999-12-22 |
WO1998039570A1 (de) | 1998-09-11 |
DE59805694D1 (de) | 2002-10-31 |
JP2001513862A (ja) | 2001-09-04 |
KR100592161B1 (ko) | 2006-06-23 |
US6123516A (en) | 2000-09-26 |
JP4067572B2 (ja) | 2008-03-26 |
CN1243563A (zh) | 2000-02-02 |
KR20000075898A (ko) | 2000-12-26 |
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