WO1997004236A1 - Ölgedichtete drehschiebervakuumpumpe mit einer ölversorgung - Google Patents
Ölgedichtete drehschiebervakuumpumpe mit einer ölversorgung Download PDFInfo
- Publication number
- WO1997004236A1 WO1997004236A1 PCT/EP1996/003078 EP9603078W WO9704236A1 WO 1997004236 A1 WO1997004236 A1 WO 1997004236A1 EP 9603078 W EP9603078 W EP 9603078W WO 9704236 A1 WO9704236 A1 WO 9704236A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- rotor
- bearing
- pump
- gap
- Prior art date
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
- F04C29/02—Lubrication; Lubricant separation
-
- 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
- F04C29/02—Lubrication; Lubricant separation
- F04C29/025—Lubrication; Lubricant separation using a lubricant pump
-
- 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
- F01C21/0809—Construction of vanes or vane holders
- F01C21/0818—Vane tracking; control therefor
- F01C21/0854—Vane tracking; control therefor by fluid means
- F01C21/0872—Vane tracking; control therefor by fluid means the fluid being other than the working fluid
-
- 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
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
- F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
- F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
-
- 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
- F04C2220/10—Vacuum
Definitions
- the invention relates to an oil-sealed rotary vane vacuum pump with the features of the preamble of claim 1.
- a vacuum pump with the features of the preamble of patent claim 1 is known from DD-A-256540.
- This publication discloses a single-stage rotary vane vacuum pump, the rotor of which is mounted at both ends by means of a journal bearing.
- the two bearing journals and their end shields are equipped with bores which are designed and arranged in such a way that they have the effect of taps which control the entry and exit of an excess oil flow which passes through the intermediate space between the slides.
- the arrangement of the bores is selected so that the oil enters the space between the slides via the first bearing pin when it has its largest volume. In this and also in the subsequent phase, in which the volume of the interspace is reduced, the outlet in the direction of the oil sump is blocked. As a result, an increased oil pressure builds up in the gap between the valves, so that oil passes through the gaps between the valves and the
- a disadvantage of the solution according to the prior art is that the oil supply to the scooping chamber is not defined, since it takes place via gaps, which have manufacturing tolerances and are subject to wear and tear. Furthermore, the previously known solution requires the existence of trunnions on both sides of the rotor. In the case of a rotor mounted on the fly, the solution according to the prior art cannot be implemented. Finally, high oil pressures repeatedly build up briefly in the intermediate space between the slides, which causes not inconsiderable noises (oil strikes).
- the object of the present invention is to design a rotary vane vacuum pump of the type mentioned at the outset in such a way that oil noises are largely avoided.
- a further reduction in operating noise can be achieved by supplying an oil-air mixture to the intermediate space between the slides. This mixture can be made before or in the oil pump.
- the point in time at which oil is admitted into the slider intermediate space is expediently chosen so that it has its smallest volume at the moment of the oil inlet. The occurrence of oil strikes is thus avoided with certainty.
- the oil is injected into the space between the slides with the aid of a nozzle. This ensures a reliable lubricating effect while at the same time keeping the amount of oil flowing around small.
- FIGS. 1 to 2 Show it - Figure 1 is a longitudinal section through an exemplary embodiment for a two-stage rotary vane vacuum pump according to the invention and
- FIG. 2 is a schematic section through a single-stage rotary vane vacuum pump according to the invention.
- the pump 1 shown comprises the modules housing 2, rotor 3 and drive motor 4.
- the housing 2 has essentially the shape of a pot with an outer wall 5, with the cover 6, with an inner part 7 with the scoops 8, 9 and the bearing bore 11, with the end plate 12 and the bearing piece 13, which the scoops Complete ends 8, 9.
- the axis of the bearing bore 11 is designated 14.
- two oil eyes 18, 19 are provided in the cover 6. Oil filler and oil drain ports are not shown.
- the oil sump is designated with 20.
- the rotor 3 is located within the inner part 7. It is formed in one piece and has two armature sections 21, 22 arranged on the end face and a bearing section 23 located between the armature sections 21, 22.
- the anchor sections 21, 22 are equipped with slots 24, 25 for two sliders 26, 27.
- the illustration according to FIG. 1 is chosen such that the respective slide interstices 28, 29 lie in the plane of the drawing.
- the slide slots 25, 26 are each milled from the associated end face of the rotor, so that exact slot dimensions can be achieved in a simple manner.
- the bearing section 23 lies between the Kerababismes 21, 22. Bearing section 23 and Lagerboh ⁇ tion 11 form the only bearing of the rotor.
- the anchor section 22 and the associated scooping chamber 9 have a larger diameter than the anchor section 21 with the scooping chamber 8.
- Anchor section 22 and scooping chamber 9 form the high vacuum stage.
- the inlet of the high vacuum stage 9, 22 is connected to the intake manifold 30.
- the outlet of the high vacuum stage 9, 22 and the inlet of the fore vacuum stage 8, 21 are connected via the housing bore 31, which extends parallel to the axes of the scoops 8, 9.
- the outlet of the fore-vacuum stage 8, 21 opens into the oil chamber 17.
- the housing 2 of the pump is expediently constructed from as few parts as possible. At least the wall sections 5, 7 comprising the two scooping spaces 8, 9 and the oil space 17 should be formed in one piece.
- the bearing piece 13 is equipped with a bore 35 for a rotor drive. This can be the shaft 36 of the drive motor 4 directly.
- a coupling piece 37 is provided between the free end face of the drive shaft 36 and the rotor 3. The manner in which the coupling piece 37 is coupled to the drive shaft 36 on the one hand and to the rotor on the other hand is not described in detail. It is explained in more detail in DE-A-43 25 285.
- the pump shown is equipped with an integrated oil pump. This consists of the scooping space embedded in the bearing piece 13 from the motor side 45 with the oval eccentric 46 rotating therein. The eccentric is in contact with a locking slide 47 which is under the pressure of the spiral spring 48.
- the eccentric 46 of the oil pump is part of the coupling piece 37. It is either fixed or positively connected - only with axial play - to the coupling piece 37.
- the bearing piece 13 is equipped on its side facing the engine 4 with a circular recess 58 in which a disk 59 is located. This is held in its position by the housing 61 of the drive motor 4. It is equipped with a central bore 62 which is penetrated by the shaft 36 of the drive motor 4.
- the disk 59 has the task of limiting the scooping space 45 of the oil pump 45, 46.
- Air from the oil chamber 17 and oil from the oil sump 20 are supplied to the oil pump 45, 46 via a first channel 64.
- the air-oil mixture leaving the oil pump enters channel 66, which opens into bearing bore 11 (mouth 67).
- the bearing pin 23 is provided with a continuous radial bore 68, from which an axial bore 69 branches off with a nozzle 70 in the direction of the slide gap 28.
- the position of the mouth 67 of the channel 66 on the one hand and the mouth of the radial bore 68 in the journal 23 on the other hand is chosen so that oil from the channel 66 can only briefly enter the bore 68 when the slide 26 assume its T position (cf. Figure 2).
- the slide gap 28 has its smallest volume men.
- the oil-air mixture which is briefly injected into the slide space 28 via the nozzle, flows through the slide space 28 and reaches the scoop space 8 without pressure.
- the inside of the cover 12 is equipped with a groove 71, which extends from the slide space 28 extends into the scoop 8.
- the free end face of the anchor section 21 is additionally equipped with a central recess 72.
- the vacuum pump according to the invention is a single-stage pump, then the relevant portion of the oil-air mixture flows through the bores 66, 68, 69 and the slide gap 28 into the scooping chamber 8 and from there returns to the oil chamber 17. Only a very small part of the oil gets into the bearing gap between the bearing bore 11 and the journal 23 and supplies this bearing with lubricating oil. It flows through the bearing gap and then also arrives in the scoop chamber 8. If the vacuum pump - as shown in the exemplary embodiment according to FIG. 1 - has two stages, a third oil-air partial flow enters the bearing gap of the bearing 11, 23 in the direction of the high vacuum pump stage 9 , 22 a.
- the bearing pin 23 is equipped with a circumferential groove 74, at the height of which a bore 75 opens, which is connected to the intermediate vacuum (bore 31).
- the sectional view through a single-stage pump according to FIG. 2 shows further details. From the oil pump 45, 46 shown as a symbol, the oil-air mixture passes through the channel 66 to the mouth 67 in the bearing bore 11.
- the rotor 3 is shown in a position in which the slides 26 assume their T position. In this position there is a connection of the channel 66 in the housing with the radial bore 68 in the bearing piece 23. A small, just sufficient amount of oil passes through the bores 68, 69 (with nozzle 70) into the slide gap 28 which is in the T - position has its smallest volume.
- the groove 71 in the cover 12 opposite the bearing piece 23 is shown in dashed lines. It is arranged in the vicinity of the outlet 30, so that one of the slides 26 is always between the inlet 33 and the groove 71. Its inner end extends far into the area of the indentation 72 in the rotor 3, so that it is ensured that the oil can leave the slide space 28 without pressure build-up and can reach the scoop space 8 via the indentation 72 and the groove 71.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Rotary Pumps (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/983,538 US6019585A (en) | 1995-07-19 | 1996-07-12 | Oil-sealed vane-type rotary vacuum pump with oil feed |
JP50626997A JP3842292B2 (ja) | 1995-07-19 | 1996-07-12 | オイル供給手段を有するオイルシールされた回転ベーン真空ポンプ |
DE59602183T DE59602183D1 (de) | 1995-07-19 | 1996-07-12 | Ölgedichtete drehschiebervakuumpumpe mit einer ölversorgung |
EP96926341A EP0839283B1 (de) | 1995-07-19 | 1996-07-12 | Ölgedichtete drehschiebervakuumpumpe mit einer ölversorgung |
CA002227168A CA2227168C (en) | 1995-07-19 | 1996-07-12 | Oil-sealed vane-type rotary vacuum pump with oil feed |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19526303A DE19526303A1 (de) | 1995-07-19 | 1995-07-19 | Ölgedichtete Drehschiebervakuumpumpe mit einer Ölversorgung |
DE19526303.0 | 1995-07-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997004236A1 true WO1997004236A1 (de) | 1997-02-06 |
Family
ID=7767207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/003078 WO1997004236A1 (de) | 1995-07-19 | 1996-07-12 | Ölgedichtete drehschiebervakuumpumpe mit einer ölversorgung |
Country Status (10)
Country | Link |
---|---|
US (1) | US6019585A (de) |
EP (1) | EP0839283B1 (de) |
JP (1) | JP3842292B2 (de) |
KR (1) | KR100442467B1 (de) |
CN (1) | CN1079505C (de) |
CA (1) | CA2227168C (de) |
DE (2) | DE19526303A1 (de) |
ES (1) | ES2133980T3 (de) |
TW (1) | TW438940B (de) |
WO (1) | WO1997004236A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1591663A1 (de) * | 2004-04-30 | 2005-11-02 | VARIAN S.p.A. | Ölgedichtete Drehschieber-Vakuumpumpe und Verfahren zur Herstellung hiervon |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100519567B1 (ko) * | 2003-09-22 | 2005-10-11 | 김덕겸 | 로터리 베인형 진공펌프 |
CN100362240C (zh) * | 2004-02-03 | 2008-01-16 | 孙洪乐 | 旋片式真空泵 |
DE102004024554B4 (de) * | 2004-05-18 | 2018-01-25 | Pfeiffer Vacuum Gmbh | Ölgedichtete Drehschiebervakuumpumpe |
GB0607198D0 (en) * | 2006-04-10 | 2006-05-17 | Wabco Automotive Uk Ltd | Improved vacuum pump |
EP2020508A1 (de) * | 2007-07-30 | 2009-02-04 | VARIAN S.p.A. | Überdrucksicherung einer Vakuumpumpe |
JP5364052B2 (ja) * | 2010-07-22 | 2013-12-11 | 株式会社ヴァレオジャパン | ベーン型圧縮機 |
KR101220371B1 (ko) * | 2010-09-17 | 2013-01-09 | 현대자동차주식회사 | 베인펌프 |
US8267072B2 (en) * | 2010-11-02 | 2012-09-18 | Ford Global Technologies, Llc | Efficient vacuum for a vehicle |
US9103246B2 (en) | 2010-11-02 | 2015-08-11 | Ford Global Technologies, Llc | System and method for reducing vacuum degradation in a vehicle |
US8355859B2 (en) * | 2010-11-02 | 2013-01-15 | Ford Global Technologies, Llc | Accessory drive for a stop/start vehicle |
EP2559903A1 (de) | 2011-08-17 | 2013-02-20 | Wabco Automotive UK Limited | Verbesserte Vakuumpumpe |
US20140363319A1 (en) | 2013-06-07 | 2014-12-11 | Agilent Technologies, Inc | Rotary vane vacuum pump |
CN105626532B (zh) * | 2014-10-30 | 2017-07-04 | 上海汽车集团股份有限公司 | 真空泵 |
EP3492698A1 (de) | 2017-11-30 | 2019-06-05 | Agilent Technologies, Inc. (A Delaware Corporation) | Mit einer schallschutzanordnung ausgestattetes vakuumpumpsystem |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155583A5 (de) * | 1971-10-04 | 1973-05-18 | Borg Warner | |
GB2158517A (en) * | 1984-04-09 | 1985-11-13 | Barmag Barmer Maschf | Sliding vane pump |
DD256540A1 (de) * | 1986-12-30 | 1988-05-11 | Medizin Labortechnik Veb K | Druckoelschmierung fuer drehschieber-vakuumpumpen |
EP0406873A2 (de) * | 1989-07-07 | 1991-01-09 | VACUUBRAND GmbH + Co. | Vakuumpumpe mit Sicherung gegen Belüftung des Rezipienten bei Stillstand |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE256540C (de) * | ||||
DE1191070B (de) * | 1955-08-15 | 1965-04-15 | Edwards High Vacuum Ltd | Zweistufige, oelabgedichtete Drehkolben-Vakuumpumpe |
FR2120305A5 (de) * | 1970-12-29 | 1972-08-18 | Ducellier & Cie | |
US4276005A (en) * | 1979-04-26 | 1981-06-30 | Varian Associates, Inc. | Oil flow metering structure for oil sealed mechanical vacuum vane pump |
JPS56143390A (en) * | 1980-04-08 | 1981-11-09 | Hitachi Koki Co Ltd | Oil supply device for oil-revolved vacuum pump |
JPS5925098A (ja) * | 1982-08-02 | 1984-02-08 | Ulvac Corp | 油回転真空ポンプの注油装置 |
DE8311647U1 (de) * | 1983-04-20 | 1984-07-05 | Westfalia Separator Ag, 4740 Oelde | Vakuumpumpe fuer melkanlagen |
JPH0776553B2 (ja) * | 1986-02-14 | 1995-08-16 | 株式会社島津製作所 | 複連形油回転真空ポンプ |
IT1207829B (it) * | 1987-02-04 | 1989-06-01 | Galileo Spa Off | Perfezionamento nel circuito di lubrificazione delle pompe rotative per vuoto. |
KR950007519B1 (ko) * | 1992-09-09 | 1995-07-11 | 김영수 | 로터리 형식의 진공펌프장치 |
DE4325285A1 (de) * | 1993-07-28 | 1995-02-02 | Leybold Ag | Ölgedichtete Vakuumpumpe |
-
1995
- 1995-07-19 DE DE19526303A patent/DE19526303A1/de not_active Withdrawn
-
1996
- 1996-07-12 WO PCT/EP1996/003078 patent/WO1997004236A1/de active IP Right Grant
- 1996-07-12 CN CN96195668A patent/CN1079505C/zh not_active Expired - Fee Related
- 1996-07-12 KR KR10-1998-0700237A patent/KR100442467B1/ko not_active IP Right Cessation
- 1996-07-12 ES ES96926341T patent/ES2133980T3/es not_active Expired - Lifetime
- 1996-07-12 US US08/983,538 patent/US6019585A/en not_active Expired - Lifetime
- 1996-07-12 DE DE59602183T patent/DE59602183D1/de not_active Expired - Lifetime
- 1996-07-12 CA CA002227168A patent/CA2227168C/en not_active Expired - Fee Related
- 1996-07-12 JP JP50626997A patent/JP3842292B2/ja not_active Expired - Fee Related
- 1996-07-12 EP EP96926341A patent/EP0839283B1/de not_active Expired - Lifetime
- 1996-07-17 TW TW085108677A patent/TW438940B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155583A5 (de) * | 1971-10-04 | 1973-05-18 | Borg Warner | |
GB2158517A (en) * | 1984-04-09 | 1985-11-13 | Barmag Barmer Maschf | Sliding vane pump |
DD256540A1 (de) * | 1986-12-30 | 1988-05-11 | Medizin Labortechnik Veb K | Druckoelschmierung fuer drehschieber-vakuumpumpen |
EP0406873A2 (de) * | 1989-07-07 | 1991-01-09 | VACUUBRAND GmbH + Co. | Vakuumpumpe mit Sicherung gegen Belüftung des Rezipienten bei Stillstand |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1591663A1 (de) * | 2004-04-30 | 2005-11-02 | VARIAN S.p.A. | Ölgedichtete Drehschieber-Vakuumpumpe und Verfahren zur Herstellung hiervon |
US7588426B2 (en) | 2004-04-30 | 2009-09-15 | Varian, S.P.A. | Oil rotary vacuum pump and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
US6019585A (en) | 2000-02-01 |
KR19990028935A (ko) | 1999-04-15 |
JPH11509596A (ja) | 1999-08-24 |
CA2227168A1 (en) | 1997-02-06 |
CA2227168C (en) | 2007-09-11 |
CN1079505C (zh) | 2002-02-20 |
JP3842292B2 (ja) | 2006-11-08 |
EP0839283A1 (de) | 1998-05-06 |
KR100442467B1 (ko) | 2004-09-18 |
DE59602183D1 (de) | 1999-07-15 |
ES2133980T3 (es) | 1999-09-16 |
EP0839283B1 (de) | 1999-06-09 |
CN1191592A (zh) | 1998-08-26 |
TW438940B (en) | 2001-06-07 |
DE19526303A1 (de) | 1997-01-23 |
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