EP0014836A1 - Pompe à palettes, notamment pour direction assistée - Google Patents

Pompe à palettes, notamment pour direction assistée Download PDF

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Publication number
EP0014836A1
EP0014836A1 EP80100167A EP80100167A EP0014836A1 EP 0014836 A1 EP0014836 A1 EP 0014836A1 EP 80100167 A EP80100167 A EP 80100167A EP 80100167 A EP80100167 A EP 80100167A EP 0014836 A1 EP0014836 A1 EP 0014836A1
Authority
EP
European Patent Office
Prior art keywords
cover
pressure
rotor
curved bottom
vane pump
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
Application number
EP80100167A
Other languages
German (de)
English (en)
Other versions
EP0014836B1 (fr
Inventor
Heinz Krüger
Heinz Teubler
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.)
Sperry Vickers Zweigniederlassung Der Sperry GmbH
Original Assignee
Sperry Vickers Zweigniederlassung Der Sperry GmbH
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 Sperry Vickers Zweigniederlassung Der Sperry GmbH filed Critical Sperry Vickers Zweigniederlassung Der Sperry GmbH
Publication of EP0014836A1 publication Critical patent/EP0014836A1/fr
Application granted granted Critical
Publication of EP0014836B1 publication Critical patent/EP0014836B1/fr
Expired legal-status Critical Current

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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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00

Definitions

  • the subject of the application relates to a vane pump, in particular for steering assistance, with the following structure:
  • a drop-shaped housing with suction and pressure channels and a cup-shaped housing cover made of deep-drawn steel with a curved bottom and an annular rim enclose a contour ring and two cheek plates, which enclose a rotor with radially displaceable blades; between the contour ring and the rotor are crescent-shaped spaces, which are divided by the wings into moving work spaces and in whose extension area (seen in the direction of pump rotation) the suction channel opens, and from their union richly branches off the pressure channel; the suction channel penetrates one cheek plate with a number of inlet openings corresponding to the number of crescent-shaped spaces, and the pressure channel penetrates the other cheek plate with a corresponding number of outlet openings which open into a pressure chamber behind the housing cover.
  • Vane pumps of this type are required in large numbers, so that their rational and cost-effective production is extremely important. For this reason, the housing cover is made of deep-drawn steel. Vane pumps must also be as quiet as possible in order to meet the requirement for low noise in vehicles.
  • the invention is based on the object of creating a vane pump which, while maintaining a construction which is inexpensive to manufacture, has a noise reduction of approximately 10 dB.
  • This object is achieved in that the space between curved bottom and an annular edge of the Ge - housing cover dureh coated with Antidröhnmasse sheet is covered, wherein, an intermediate space is left to cover the bottom.
  • the space between the lid base and the coated sheet metal is expediently connected to the external atmosphere by fine bores in the coated sheet metal. Through these fine bores only a little sound penetrates to the outside, on the other hand it can be prevented that the sheet metal is acoustically coupled to the housing cover.
  • the coated plate can be clamped together with the housing cover by a snap ring in the housing, but it would also be possible to fix the plate to the edge of the housing cover, for example by spot welding.
  • the vane pump has a drop-shaped housing 1 with an interior 1 a, which is closed by a cup-shaped cover 2. Sitting in this interior 1a arranged fixed to the housing, two cheek plates 3, 4 and a contour ring 5, and these parts are secured against rotation by means of pins 6.
  • a rotor 7 is arranged within the contour ring 5 and between the cheek plates 3, 4 and has a series of radial guide slots 7a. Wings 8 are radially displaceably mounted within these guide slots 7a.
  • the rotor 7 can be driven via a shaft 9 which is seated in a bearing bore which is mounted opposite the cover 2.
  • the rotor 7 is cylindrical in shape, while the contour ring has an approximately oval inner contour, the small axis of which corresponds approximately to the diameter of the rotor 7, while the large axis determines the extension length of the vanes 8.
  • the contour ring 5 and the rotor 7 there are two crescent-shaped spaces 11 and 12, which are divided by the vanes 8 into a number of working spaces 11a to 11d or 12a to 12d.
  • the working space 11b or 12b Larger than the working space 11a, 12a, so that you see the direction of rotation shown on the suction side of the system, while the working spaces 11c, 12c narrow to the working spaces 11d, 12d, so that the pressure side of the system can be found there.
  • the cheek plate 3 therefore has two opposing kidney-shaped inlet openings, not shown, which form part of the suction channel, which begins at 15 (FIG. 1).
  • the channel 15 meets an approximately radial channel 16 (Fig. 2), which opens into the interior 1 a of the housing 1, with two rule the outer circumference of the contour ring 5 and the cheek plate 3, an annular space 17 remains.
  • two kidney-shaped outlet openings 21, 22 are provided in the cheek plate 4, which open into a pressure chamber 23 which lies between the cover 2 and the cheek plate 4.
  • a helical or conical spring 24 is also accommodated, which presses the cheek plate 4 in sealing contact against the rotor 7 and this against the cheek plate 3.
  • the pressure chamber 23 is connected by a channel 25 to a short-circuit valve 28.
  • a transverse channel 26 branches off from the channel 25 to the outlet 27.
  • the short-circuit valve 28 is arranged between the channels 25 and 16 and opens an overflow path at an adjustable pressure.
  • the cup-shaped cover 2 (FIG. 2) is made of deep-drawn steel and has a curved bottom 30 and an annular rim 31. In this way, an open space is formed which has an essentially cylindrical shape with an approximately raised center. This space is covered by a sheet 34 coated with anti-drumming compound 33, so that a remaining intermediate space 35 remains. This remaining intermediate space 35 is guided to the outside via fine bores 36 in order to counteract a certain acoustic coupling between the cover 2 and the sheet metal 34.
  • the lid 2 is together with the sheet 34 by means of a snap ring 37 in the interior 1a of the drip shaped housing 1 set. However, it is also possible to fasten the plate 34 with the edge to the edge 31 of the cover 2, for example by spot welding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)
EP80100167A 1979-02-12 1980-01-14 Pompe à palettes, notamment pour direction assistée Expired EP0014836B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2905273 1979-02-12
DE19792905273 DE2905273A1 (de) 1979-02-12 1979-02-12 Fluegelzellenpumpe, insbesondere zur lenkhilfe

Publications (2)

Publication Number Publication Date
EP0014836A1 true EP0014836A1 (fr) 1980-09-03
EP0014836B1 EP0014836B1 (fr) 1982-01-06

Family

ID=6062737

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80100167A Expired EP0014836B1 (fr) 1979-02-12 1980-01-14 Pompe à palettes, notamment pour direction assistée

Country Status (2)

Country Link
EP (1) EP0014836B1 (fr)
DE (2) DE2905273A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496591A1 (fr) * 1991-01-23 1992-07-29 IMO INDUSTRIES Inc. Structure de pompe hydraulique réduisant le bruit
WO2008141714A1 (fr) * 2007-05-24 2008-11-27 Trw Automotive Gmbh Pompe à engrenages
DE102016211057A1 (de) * 2016-05-30 2017-11-30 Schwäbische Hüttenwerke Automotive GmbH Förderelement für eine Rotationspumpe

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623421A1 (de) * 1986-07-11 1988-01-14 Vickers Systems Gmbh Lenkhilfpumpe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311916A (en) * 1939-06-24 1943-02-23 Gunnar A Wahlmark Fuel pump
US2460649A (en) * 1942-03-07 1949-02-01 Geza W Muiler Gear pump with flow cushioning means
US2803196A (en) * 1953-12-16 1957-08-20 Sundstrand Machine Tool Co Pump
GB1178635A (en) * 1967-01-03 1970-01-21 Chrysler Corp Improved Rotary Positive-Displacement Hydraulic Pump
DE1957654A1 (de) * 1969-11-17 1971-05-27 Danfoss As Fluessigkeitspumpe,insbesondere Heizoelpumpe
DE2637979A1 (de) * 1976-08-24 1978-03-02 Bosch Gmbh Robert Kraftstoffoerderpumpe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311916A (en) * 1939-06-24 1943-02-23 Gunnar A Wahlmark Fuel pump
US2460649A (en) * 1942-03-07 1949-02-01 Geza W Muiler Gear pump with flow cushioning means
US2803196A (en) * 1953-12-16 1957-08-20 Sundstrand Machine Tool Co Pump
GB1178635A (en) * 1967-01-03 1970-01-21 Chrysler Corp Improved Rotary Positive-Displacement Hydraulic Pump
DE1957654A1 (de) * 1969-11-17 1971-05-27 Danfoss As Fluessigkeitspumpe,insbesondere Heizoelpumpe
DE2637979A1 (de) * 1976-08-24 1978-03-02 Bosch Gmbh Robert Kraftstoffoerderpumpe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0496591A1 (fr) * 1991-01-23 1992-07-29 IMO INDUSTRIES Inc. Structure de pompe hydraulique réduisant le bruit
WO2008141714A1 (fr) * 2007-05-24 2008-11-27 Trw Automotive Gmbh Pompe à engrenages
DE102016211057A1 (de) * 2016-05-30 2017-11-30 Schwäbische Hüttenwerke Automotive GmbH Förderelement für eine Rotationspumpe

Also Published As

Publication number Publication date
EP0014836B1 (fr) 1982-01-06
DE3060132D1 (en) 1982-02-25
DE2905273A1 (de) 1980-08-28

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