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EP0371167A1 - Pompe rotative à palettes - Google Patents

Pompe rotative à palettes Download PDF

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Publication number
EP0371167A1
EP0371167A1 EP88120005A EP88120005A EP0371167A1 EP 0371167 A1 EP0371167 A1 EP 0371167A1 EP 88120005 A EP88120005 A EP 88120005A EP 88120005 A EP88120005 A EP 88120005A EP 0371167 A1 EP0371167 A1 EP 0371167A1
Authority
EP
European Patent Office
Prior art keywords
rotary vane
vane pump
pressure
piston
pump according
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Withdrawn
Application number
EP88120005A
Other languages
German (de)
English (en)
Inventor
Norbert Dr. Aust
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP88120005A priority Critical patent/EP0371167A1/fr
Priority to JP31225189A priority patent/JPH02185691A/ja
Publication of EP0371167A1 publication Critical patent/EP0371167A1/fr
Withdrawn legal-status Critical Current

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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
    • F01C21/08—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
    • F01C21/0863—Vane tracking; control therefor by fluid means the fluid being the working fluid

Definitions

  • the invention relates to a rotary vane pump according to the preamble of claim 1.
  • a rotary vane pump is known from DE-B-19 15 059.
  • the radially moveable working slide are in rotary vane pumps under the influence of centrifugal force on the inner wall of the pump housing, so that due to the friction existing between the slide and the inner wall, there is also a corresponding wear on the slide. Frictional losses and wear are particularly high if such rotary vane pumps are operated without lubricant to avoid contamination of the medium to be pumped. In order to keep losses and wear as small as possible, the rotary vane pumps are then operated at a relatively low speed. This results in a correspondingly low performance in relation to the size of the pumps.
  • the invention has for its object to provide a rotary vane pump of the generic type so that the force pushing the working slide against the inner wall of the pump housing is substantially reduced and thus the frictional losses and wear on the working slide and the pump housing is reduced.
  • the pressure difference between the compression and suction pressure of the rotary vane pump can be used to generate the necessary pressure force. This eliminates the need for a separate pressure source.
  • a rotor 4 is arranged with its axis 2 offset eccentrically with respect to the housing axis 3. At the end faces, the housing 1 is closed by the compressor cover 5.
  • the eccentricity 6 between the rotor axis 2 and the housing axis 3 forms a crescent-shaped suction and compression space 7 and 8 between the rotor 4 and the housing 1.
  • the rotor 4 consists of a rotor body 10 which is arranged on a drive shaft 9 and is provided with working slides 11 which are arranged in a radially movable manner. At its radially inner end, a strip 12 is provided on each working slide 11, which results in a piston-like widening of the working slide 11. For guiding the working slide 11, slits 13 are widened over a width corresponding to the stroke of the working slide 11 corresponding length of the strip 12, so that a piston chamber 14 is formed. Due to the centrifugal force occurring as a result of the rotation of the rotor 4, the working slides 11 are moved radially outward and bear against the inner wall 15 of the housing 1.
  • the piston spaces 14 are increased in their radially outer region 14a Pressure is applied as in its radially inner region 14b. As a result, a force opposing the centrifugal force acts on each working slide 11 via the bar 12, so that the contact pressure of the working slide 11 on the inner wall 15 is reduced.
  • a first and second ring channel 20 and 21 are formed on one or both compressor covers 5, the diameter of the first ring channel 20 corresponding to the radius of the outer end region 14a and the diameter of the second ring channel 21 corresponding to the radius of the inner end region 14b of the piston chambers 14.
  • each ring channel 20 and 21 opens an axial bore 22 passing through the compressor cover to the outside.
  • the axial bore 22 of the first ring channel is via a pressure line 23 to the pressure outlet 19 and the axial bore 22 of the ring channel 21 via a hose line 24 to the suction opening 17 of the rotary vane pump connected.
  • each piston chamber 14 extends to the end face of the rotor body 10, there is a pressure connection between the radially outer and the radially inner end regions 14a and 14b of each piston chamber 14 and the ring channels 20 and 21, which are also open.
  • the radially outer end region 14a of each piston chamber 14 is thus acted upon by the compression pressure prevailing in the first annular channel 20 and the radially inner end region 14b is acted upon by the suction pressure of the rotary vane pump.
  • the pressure difference between the suction and compression pressure thus counteracts the centrifugal force.
  • the counterforce generated by the pressure difference to the centrifugal force can be predetermined by appropriate dimensioning of the area of the strip 12.
  • the application of suction or compression pressure to the ring channels 20 and 21 can also take place via connecting bores 27 and 28 in the wall of the compressor cover 5, as indicated by dashed lines in FIG. 1.
  • the connecting bore 27 emanating from the first annular duct 20 opens into the compression chamber 8 on the inside of the compressor cover 5 and the connecting bore 28 emanating from the second annular duct 21 opens into the intake chamber 7. This saves on the need for separate lines to be laid.
  • the force acting on the working slide 11 and counteracting the centrifugal force acting on the working slide 11 can be controlled by interposing a pressure control device 26 such that the pressure of the working slide 11 on the inner wall 15 is sufficient just to seal the subspaces separated from one another by the working slide 11. The friction losses and wear on the working slides 11 thus remain limited to the absolutely necessary minimum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP88120005A 1988-11-30 1988-11-30 Pompe rotative à palettes Withdrawn EP0371167A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP88120005A EP0371167A1 (fr) 1988-11-30 1988-11-30 Pompe rotative à palettes
JP31225189A JPH02185691A (ja) 1988-11-30 1989-11-29 回転ベーン形ポンプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP88120005A EP0371167A1 (fr) 1988-11-30 1988-11-30 Pompe rotative à palettes

Publications (1)

Publication Number Publication Date
EP0371167A1 true EP0371167A1 (fr) 1990-06-06

Family

ID=8199618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88120005A Withdrawn EP0371167A1 (fr) 1988-11-30 1988-11-30 Pompe rotative à palettes

Country Status (2)

Country Link
EP (1) EP0371167A1 (fr)
JP (1) JPH02185691A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565741A1 (fr) * 1992-04-11 1993-10-20 Carl Schenck Ag Cylindre hydraulique rotatif
FR2692941A1 (fr) * 1992-06-30 1993-12-31 Sergent Andre Pompe à palettes pour produits alimentaires.
CN107228070A (zh) * 2017-07-31 2017-10-03 广东美芝制冷设备有限公司 压缩机以及具有它的制冷系统
CN118423273A (zh) * 2024-07-05 2024-08-02 厦门太星机电有限公司 一种自适应磁控式耐用型小型真空泵

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100393347B1 (ko) * 2000-08-17 2003-07-31 맹혁재 두 날개의 베인을 이용한 유체압축 및 동력전환장치
KR100395373B1 (ko) * 2000-09-04 2003-08-21 맹혁재 압축기
CN113915123B (zh) * 2021-10-25 2022-07-12 浙江威龙泵业有限公司 一种滑片泵

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB151856A (en) * 1919-11-21 1920-10-07 Joseph Gilgour Davidson Improvements in rotary engines
FR750088A (fr) * 1932-04-28 1933-08-03 Perfectionnements aux compresseurs volumétriques rotatifs
FR1078008A (fr) * 1953-06-03 1954-11-15 Pompe centrifuge à palettes hydrauliquement commandées
US2714858A (en) * 1950-11-03 1955-08-09 Kepka Frank Rotary compressors or pumps, in combination with hydraulic controls, and mechanical controls in co-ordination therewith
US3329067A (en) * 1964-11-23 1967-07-04 Nils O Rosaen Fluid motors
US3421413A (en) * 1966-04-18 1969-01-14 Abex Corp Rotary vane fluid power unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB151856A (en) * 1919-11-21 1920-10-07 Joseph Gilgour Davidson Improvements in rotary engines
FR750088A (fr) * 1932-04-28 1933-08-03 Perfectionnements aux compresseurs volumétriques rotatifs
US2714858A (en) * 1950-11-03 1955-08-09 Kepka Frank Rotary compressors or pumps, in combination with hydraulic controls, and mechanical controls in co-ordination therewith
FR1078008A (fr) * 1953-06-03 1954-11-15 Pompe centrifuge à palettes hydrauliquement commandées
US3329067A (en) * 1964-11-23 1967-07-04 Nils O Rosaen Fluid motors
US3421413A (en) * 1966-04-18 1969-01-14 Abex Corp Rotary vane fluid power unit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0565741A1 (fr) * 1992-04-11 1993-10-20 Carl Schenck Ag Cylindre hydraulique rotatif
FR2692941A1 (fr) * 1992-06-30 1993-12-31 Sergent Andre Pompe à palettes pour produits alimentaires.
EP0578533A1 (fr) * 1992-06-30 1994-01-12 MOUVEX, Société anonyme dite: Pompe à palettes pour produits alimentaires
CN107228070A (zh) * 2017-07-31 2017-10-03 广东美芝制冷设备有限公司 压缩机以及具有它的制冷系统
CN118423273A (zh) * 2024-07-05 2024-08-02 厦门太星机电有限公司 一种自适应磁控式耐用型小型真空泵

Also Published As

Publication number Publication date
JPH02185691A (ja) 1990-07-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Designated state(s): DE FR GB IT

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Withdrawal date: 19900712

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Effective date: 19900712