EP0101758A1 - Pompe ou moteur à palettes - Google Patents

Pompe ou moteur à palettes Download PDF

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Publication number
EP0101758A1
EP0101758A1 EP19820108045 EP82108045A EP0101758A1 EP 0101758 A1 EP0101758 A1 EP 0101758A1 EP 19820108045 EP19820108045 EP 19820108045 EP 82108045 A EP82108045 A EP 82108045A EP 0101758 A1 EP0101758 A1 EP 0101758A1
Authority
EP
European Patent Office
Prior art keywords
wing
vane
vane pump
rotor
head
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
EP19820108045
Other languages
German (de)
English (en)
Other versions
EP0101758B1 (fr
Inventor
Gerald Keith Warren
Hans-Jürgen Dipl.-Ing. Lauth
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.)
Vickers Systems GmbH
Original Assignee
Vickers Systems GmbH
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 Vickers Systems GmbH, Sperry Vickers Zweigniederlassung Der Sperry GmbH filed Critical Vickers Systems GmbH
Priority to EP19820108045 priority Critical patent/EP0101758B1/fr
Priority to DE8282108045T priority patent/DE3271561D1/de
Publication of EP0101758A1 publication Critical patent/EP0101758A1/fr
Application granted granted Critical
Publication of EP0101758B1 publication Critical patent/EP0101758B1/fr
Expired 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
    • 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
    • F01C20/00—Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/18—Control of, monitoring of, or safety arrangements for, machines or engines characterised by varying the volume of the working chamber
    • F01C20/22—Control of, monitoring of, or safety arrangements for, machines or engines characterised by varying the volume of the working chamber by changing the eccentricity between cooperating members
    • 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

Definitions

  • the invention relates to a vane pump or motor with the features a to e of claim 1.
  • the enclosed volume of a shrinking cell space leads to a pressure rise, which can cause the wing adjacent to a low-pressure room to lift off the stroke curve, which not only results in leakage losses, but also the subsequent re-fitting of the wing head Makes noise.
  • each wing has a hook-like projection, which acts as a differential pressure piston, so that the contact pressures of the wings can be controlled in a certain way.
  • the disadvantages are the relatively complex construction and the fact that the pressure of the wings against the stroke curve in the area between the inlet and outlet, i.e. low pressure and high pressure, starts relatively late or a relatively large distance must remain between the kidney-shaped inlet opening and the assigned outlet opening, to get to the required pressure build-up.
  • the invention solves the problem that a vane pump or machine with the features a) to e) just develops the required contact pressure of the wing on the cam ring, with hydraulic support. takes place precisely at the points where a seal is required, while no such additional hydraulic contact pressure is developed at other points. In this way, the mechanical friction loss of the machine is reduced.
  • the vane pump contains a rotor 1 with slots 2 and foot spaces 3, which merge into one another at a stage 3a.
  • one-piece wings 4 are guided, which have a wing head 5, a wing foot 6, further seen in the machine direction, a groove-shaped front channel 7 and a groove-shaped rear channel 9.
  • the front channel 7. begins with a control edge 7a on the wing front and ends at the bottom of the wing root.
  • the rear channel 9 begins at the wing head 5 and ends at a control edge 9a.
  • the control edge 7a cooperates with the surface of the rotor 1 to open or close the channel 7 at about half the stroke of the wing.
  • control edges 9a overlap with step 3a.
  • the wing head 5 is asymmetrical, i.e. provided with a rounded wing tip, which can be arranged offset to the front, so that uneven head areas 5a, 5b are formed on both sides of the wing tip.
  • the drawing also shows the inner contours of a cam ring 10, two kidney-shaped inlet openings 11, 12 and two kidney-shaped outlet openings 13, 14 indicated that each lead to a suction chamber or pressure chamber, not shown.
  • two crescent-shaped delivery spaces 15, 16 are arranged, which are divided by the wings 4 into a plurality of moving cell spaces, which expand in the vicinity of the inlet openings 11, 12 in the direction of rotation of the rotor 1 shown and narrow in the vicinity of the outlet openings 13, 14.
  • the rear channel 9 connects the footwell 3 to the inlet opening 11, so that when the rotor 1 rotates, the wing 4 in question can follow the lifting curve 10 under the action of the centrifugal force, the expanding footwell 3 via the channel 9 is filled with the inflowing hydraulic fluid.
  • the control edge 9a of stage 3a and the control edge 7a approach the surface of the rotor 1, so that the channel 9 is blocked and the channel 7 is opened. The footwell 3 is therefore still filled.
  • the wing 4 In phase ⁇ , the wing 4 has left the area of the inlet opening 11 and is approaching the outlet opening 13, ie a pressure builds up in the cell space 15 ⁇ , which passes through the channel 7 into the foot space 3 and hydraulically counteracts the wing 4 urges the cam ring 10.
  • the wing 4 acts as a differential pressure piston, since the wing foot underside 6 and the head surface 5a are at increasing pressure, while the head surface 5b remains connected to the low pressure of the inlet side.
  • the hydraulic contact pressure of the wing 4 is calculated from the difference between the areas 6 minus 5a, multiplied by the increasing difference in the pressures in front of and behind the wing.
  • the pressure side is therefore well sealed by the suction side, and the better the higher the difference in pressures, the better.
  • the pressure generated in the cell space 13b depends on the narrowing of the cell space and can reach peak values that are above the pressure in the outlet 13.
  • phase ⁇ the differential pressure lying on the top surface 5b can therefore predominate and force the wing 4 inwards more quickly than it corresponds to the stroke curve 10.
  • the wing head 5 lifts off a little from the stroke curve 10, as a result of which the cell space 15 ⁇ is relieved.
  • relief grooves 13a can be provided in the side covers or pressure plates of the vane pump, which open into the outlet opening 13.
  • the wing 4 When passing the kidney-shaped outlet opening 13, the wing 4 is switched over again, i.e. the channel 7 is closed and the channel 9 is opened, as shown in the phase ⁇ .
  • the pressure is the same on both sides of the wing.
  • the wing moves further into position ⁇ ', which corresponds to phase ⁇ and therefore does not need to be explained further.
  • the vane pump shown schematically in FIG. 5 is set up for a variable flow.
  • a rotor 21 and a displaceable cam ring 30 are accommodated in a housing 20.
  • the rotor 21 contains slots 22 and foot spaces 23 as well as blades composed of partial blades 24a and 24b.
  • the partial wings 24a, 24b each have an asymmetrically designed head, the outer head surfaces of which are designated 25a and 25b, between which a head space 25c extends.
  • a wing base 26a and 26b is also provided.
  • the overall wing has a front channel 27, 28 and a rear channel 29.
  • the front channel is formed by a continuous groove 27 between the foot space 23 and the head space and a control bore 28 which extends at half the wing stroke across the partial wing 24a.
  • the rear channel 29 is formed by a groove in the partial wing 24b and has a control edge 29a.
  • the cam ring 30 has a circular-cylindrical inner contour, so that a crescent-shaped conveying space 35 is formed for the likewise circular-cylindrical outer contour of the rotor 21, which is divided by the wings into a plurality of cell spaces which migrate between a kidney-shaped inlet opening 31 and a likewise kidney-shaped outlet opening 33 and expand or contract in the process.
  • the eccentricity of the cam ring 30 can be adjusted by means of two pistons 36, 37, the smaller piston 36 being constantly connected to pump pressure, while the cylinder space 38 of the larger piston 37, which may also be loaded with a spring 39, is controlled by a valve 40 becomes.
  • the valve 40 is designed as a pressure compensator, i.e.
  • a slide piston 41 is provided which is exposed on the one hand to the pump pressure and on the other hand to the pressure of an adjustable spring 42. If the pump pressure is low, the cylinder 38 receives hydraulic fluid via a throttle 43, while if the pressure is too high, the cylinder chamber 38 is connected to a tank line 44 via the valve 40. With the circuit shown, a certain pump pressure is adjusted, the delivery rate fluctuating between a minimum and a maximum delivery rate in accordance with the eccentricity of the cam ring 30. It goes without saying that the pump can also be regulated according to other criteria.
  • phase ⁇ the wing has the same switching state as in phase a, but the two wing sides are connected to one another via inlet opening 31. There is therefore no hydraulic pressing of the wing. The same applies to the phase ⁇ .
  • phase ⁇ the wing leaves the area of the kidney-shaped inlet opening 31.
  • the footwell 23 receives increasing hydraulic pressure via the channel 27, 28 from the front cell space, so that the surfaces 25a, 25c, 26a, 26b come to high pressure, while the outer Wing head surface 25b remains at low pressure and the partial wing 24b is thus pressed hydraulically against the lifting curve 30.
  • the cell spaces adjacent to the wing, which are at different pressures, are thus well sealed from one another.
  • phase n the wing enters the area of the outlet opening 33 so that both wing sides appear high pressure and the wing is no longer pressed hydraulically.
  • phases e and L between which the switching of channels 27, 28 to 29 takes place.
  • the control bore 28 is blocked and the channel 29 is released. This happens around the same time; however, a slight positive or negative opening coverage can also be maintained, ie a state in which both channels 27, 28 and 29 are open or blocked. The positive opening coverage is preferred since no pressure pulse then arises in the footwell 23.
  • the wing moves further into the footwell 23 without any significant changes compared to the state in the phase.
  • the embodiment of the wing with the two partial wings 24a and 24b has the particular advantage of good conformability to the lifting curve 30 and the formation of two sealing areas on each wing.
  • a wing designed in this way can also be used in the embodiment of the pump according to FIG. 1.
  • the wing 4, which is simpler in itself, can also be used in the variable pump according to FIG. 5.
  • Both types have in common the elimination of the additional inlet and outlet kidney to the footwell 23, which must be provided in known, marketable pump designs. This omission not only saves on manufacturing costs, but also the size of the leakage current is reduced, since the close proximity of the additional inlet and outlet kidneys to the footwells results in relatively high pump losses.
  • the foot spaces 23 are connected to the other hydraulic spaces via the channels 7 and 8 or 27, 28, 29, without this leakage loss occurring.
  • the partial wings 24a, 24b touch each other and are movable on the one hand, on the other hand, the lubricating film in the separating surface ensures a certain drag effect between the partial wings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
EP19820108045 1982-09-01 1982-09-01 Pompe ou moteur à palettes Expired EP0101758B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19820108045 EP0101758B1 (fr) 1982-09-01 1982-09-01 Pompe ou moteur à palettes
DE8282108045T DE3271561D1 (en) 1982-09-01 1982-09-01 Vane pump or motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19820108045 EP0101758B1 (fr) 1982-09-01 1982-09-01 Pompe ou moteur à palettes

Publications (2)

Publication Number Publication Date
EP0101758A1 true EP0101758A1 (fr) 1984-03-07
EP0101758B1 EP0101758B1 (fr) 1986-06-04

Family

ID=8189202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820108045 Expired EP0101758B1 (fr) 1982-09-01 1982-09-01 Pompe ou moteur à palettes

Country Status (2)

Country Link
EP (1) EP0101758B1 (fr)
DE (1) DE3271561D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002046616A2 (fr) * 2000-12-04 2002-06-13 Edwards Thomas C Dispositif de manipulation de fluide a aubage unique
US7056107B2 (en) * 2001-10-16 2006-06-06 Ebara Corporation Vane type rotary machine
CN103821711A (zh) * 2012-11-19 2014-05-28 六汉企业股份有限公司 泵结构

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612115A (en) * 1948-04-06 1952-09-30 Thompson Grinder Co Vane pump and vane therefor
GB818025A (en) * 1956-06-20 1959-08-12 New York Air Brake Co Improvements in rotary pumps or motors of the outwardly-sliding vane type
US2968252A (en) * 1959-03-16 1961-01-17 New York Air Brake Co Engine
GB1038016A (en) * 1963-05-22 1966-08-03 Elliott Fredolph Hanson Sliding vane motor or pump
DE2146656A1 (de) * 1970-09-22 1972-03-23 Generalvacuum S.p.A., Mailand (Italien) Hochleistungs-Rotationsmotor für komprimierbare Fluidien
DE2646635B2 (de) * 1975-10-15 1979-11-08 Ishikawajima-Harima Jukogyo K.K., Tokio Hydraulische Drehflügelpumpe oder -motor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612115A (en) * 1948-04-06 1952-09-30 Thompson Grinder Co Vane pump and vane therefor
GB818025A (en) * 1956-06-20 1959-08-12 New York Air Brake Co Improvements in rotary pumps or motors of the outwardly-sliding vane type
US2968252A (en) * 1959-03-16 1961-01-17 New York Air Brake Co Engine
GB1038016A (en) * 1963-05-22 1966-08-03 Elliott Fredolph Hanson Sliding vane motor or pump
DE2146656A1 (de) * 1970-09-22 1972-03-23 Generalvacuum S.p.A., Mailand (Italien) Hochleistungs-Rotationsmotor für komprimierbare Fluidien
DE2646635B2 (de) * 1975-10-15 1979-11-08 Ishikawajima-Harima Jukogyo K.K., Tokio Hydraulische Drehflügelpumpe oder -motor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002046616A2 (fr) * 2000-12-04 2002-06-13 Edwards Thomas C Dispositif de manipulation de fluide a aubage unique
WO2002046616A3 (fr) * 2000-12-04 2002-08-01 Thomas C Edwards Dispositif de manipulation de fluide a aubage unique
US7056107B2 (en) * 2001-10-16 2006-06-06 Ebara Corporation Vane type rotary machine
CN103821711A (zh) * 2012-11-19 2014-05-28 六汉企业股份有限公司 泵结构

Also Published As

Publication number Publication date
DE3271561D1 (en) 1986-07-10
EP0101758B1 (fr) 1986-06-04

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