EP0101758B1 - Pompe ou moteur à palettes - Google Patents

Pompe ou moteur à palettes Download PDF

Info

Publication number
EP0101758B1
EP0101758B1 EP19820108045 EP82108045A EP0101758B1 EP 0101758 B1 EP0101758 B1 EP 0101758B1 EP 19820108045 EP19820108045 EP 19820108045 EP 82108045 A EP82108045 A EP 82108045A EP 0101758 B1 EP0101758 B1 EP 0101758B1
Authority
EP
European Patent Office
Prior art keywords
vane
rotor
space
pressure
motor 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.)
Expired
Application number
EP19820108045
Other languages
German (de)
English (en)
Other versions
EP0101758A1 (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
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 filed Critical Vickers Systems GmbH
Priority to DE8282108045T priority Critical patent/DE3271561D1/de
Priority to EP19820108045 priority patent/EP0101758B1/fr
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

Links

Images

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 foot wells are connected to one another via an annular channel and are therefore constantly under high pressure, which causes the double wings to be pressed against the inner contour of the cam ring.
  • a certain relief of the contact pressure of the wings on the inner contour of the cam ring occurs, but due to the larger cross section of the wing foot compared to the head space always (in all phases of rotation of the wing) exerted an outward hydraulic force on the wing, even if the wing had no sealing function at all.
  • Vane pumps or motors are also already known (US-A-2 612 115), in which one-piece vanes are provided on their front side with a channel which has a control edge which cooperates with the rotor surface, and have a further channel on the rear side , which has a control edge cooperating with the footwells.
  • the one-piece wing has a full-surface wing head, which is pressed on hydraulically in the area of the dividers according to the cross-sectional area of the wing. With a rounded wing head, this adjustment would be too high.
  • each wing has a hook-like projection which acts as a differential pressure piston, so that the contact pressure of the wings can be reduced.
  • the disadvantages are the relatively complex construction and the fact that due to an additional connecting channel of the footwell through the rotor to the rear wing cell space, the pressure of the wings on the stroke curve in the area between inlet and outlet starts relatively late, i.e. a relatively large distance must remain between the kidney-shaped inlet opening and the associated outlet opening in order to achieve the required pressure build-up.
  • the invention solves the problem that a vane pump or motor with the features a) to e) just develops the required pressing force of the wings on the cam ring, hydraulic support only being provided at the points where a seal is required while on other places no such additional hydraulic contact pressure is developed. In this way, the mechanical friction loss of the machine is reduced.
  • the vane pump shown schematically in FIG. 1 is set up for a variable flow rate.
  • 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 28, the outer head surfaces 25a and 25b of which are smaller than the inner head surfaces 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 through groove 27 between the footwell 23 and headspace and a control bore 28 which extends halfway through 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 vanes 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 bens 37, which is possibly still loaded with a spring 39, is controlled via a valve 40.
  • the valve 40 is designed as a pressure compensator, ie a slide piston 41 is provided which is exposed to the pump pressure on the one hand and the pressure of an adjustable spring 42 on the other hand. 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. A certain pump pressure is adjusted with the circuit shown, the delivery rate fluctuating between a minimum and maximum delivery rate in accordance with the eccentricity of the cam ring 30. It goes without saying that the pump can also be controlled 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.
  • phase y In phase 8 - approximately in the middle of the arc of inlet 31 - the switching process between channel 27, 28 and channel 29 takes place, i.e. the control edge 29a enters the guide slot 22, while the control bore 28 emerges from the outline of the rotor 21 and establishes the connection to the footwell 23 via the centrally arranged groove 27.
  • 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 as a differential pressure piston against the stroke curve 30.
  • the cell spaces adjacent to the wing, which are at different pressures, are thus well sealed from one another.
  • phase ⁇ the wing enters the area of the outlet opening 33, so that both wing sides are under high pressure and the wing is no longer pressed hydraulically.
  • phases 0 and t between which the switching of channels 27, 28 and 29 takes place.
  • the control bore 28 is blocked and the channel 29 is released. This happens around the same time; however, a small positive or negative opening coverage can also be maintained, i.e. 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 embodiment of the wing with the two partial wings 24a and 24b has the particular advantage of being easily attachable to the lifting curve 30 and the formation of two sealing areas on each wing.
  • the foot spaces 23 are connected to the other hydraulic spaces via the channels 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)

Claims (9)

1. Pompe ou moteur cellulaire à palettes, qui contient les composants suivants dans un carter:
a) un rotor (21) dans lequel sont ménagées des fentes (22) et des volumes de pied (23),
b) des doubles palettes comportant chacune une partie de palette avant (24a) et une partie de palette arrière (24b), qui sont guidées dans une fente associée (22), qui comportent une tête de palette pourvue de surfaces extérieures de tête (25a, 25b) ainsi qu'un pied de palette (26a, 26b) et qui délimitent entre elles un canal central (27), qui relie le volume de pied associé (23) avec un volume de tête correspondant (25c), qui est disposé entre les surfaces extérieures de tête (25a, 25b),
c) un anneau d'actionnement (30) servant à l'entraînement radial des palettes et à la formation - par rapport au rotor - d'au moins un volume de refoulement (35) en forme de croissant, qui comporte une zone s'élargissant et une zone se rétrécissant, qui sont reliées entre elles par l'intermédiaire de voiles séparateurs et qui sont divisées par les palettes (24a, 24b) en plusieurs volumes cellulaires,
d) au moins un orifice d'admission (31), qui est en communication avec la zone en élargissement du volume de refoulement, et
e) au moins un orifice d'échappement (33) qui est relié avec la zone en rétrécissement du volume de refoulement (35), caractérisé en ce que:
f) chacune des parties de palette avant (24a) comporte un canal (27, 28) débouchant vers l'avant, qui est relié au volume de pied (23) et qui est pourvu d'une arête de distribution coopérant avec la surface du rotor (21), cette partie de palette (24a) étant normalement soumise de tous côtés à la même pression mais étant cependant sollicitée dans une plage angulaire (a) du voile séparateur entre l'orifice d'échappement (33) et l'orifice d'admission (31) par une faible pression sur sa surface extérieure de tête (25a) alors qu'elle est soumise à une haute pression sur d'autres surfaces, et en ce que:
g) la partie de palette arrière (24b) comporte un canal arrière (29) qui commence à la tête de palette (25b) et qui se termine au voisinage du pied de palette (26b) sur une arête de distribution (29a) qui coopère avec la fente (22) du rotor (21), cette partie de palette (24b) étant soumise de tous côtés à la même pression mais étant cependant sollicitée dans une plage angulaire (ζ) du voile séparateur entre l'orifice d'échappement (33) et l'orifice d'admission (31), sur sa surface extérieure de tête (25b), par une faible pression alors qu'elle est soumise à une pression élevée sur d'autres surfaces.
2. Pompe ou moteur cellulaire à palettes selon la revendication 1, caractérisé en ce que l'anneau d'actionnement (30) comporte un contour intérieur de forme cylindrique circulaire, est disposé de façon à coulisser dans le carter et à être excentré par rapport au rotor, et en ce que l'excentricité de l'anneau d'actionnement (30) est réglable au moyen d'un mécanisme à piston (36, 37).
3. Pompe ou moteur cellulaire à palettes selon la revendication 1 ou 2, caractérisé en ce que le canal débouchant sur le côté avant contient un trou de distribution (28) aboutissant au canal central (27) et qui agit comme une arête de distribution.
4. Pompe ou moteur cellulaire à palettes selon la revendication 3, caractérisé en ce que le trou de distribution (28) est disposé en un endroit de la palette avant (24a) qui croise la surface du roror (21) quand la palette se déplace devant l'orifice d'admission ou l'orifice d'échappement (31, 33).
5. Pompe ou moteur cellulaire à palettes selon la revendication 4, caractérisé en ce que le trou de distribution (28) coïncide avec la surface du rotor (21) à peu près à la moitié de la course de la palette (24a, 24b).
6. Pompe ou moteur cellulaire à palettes selon l'une des revendications 1 à 5, caractérisé en ce que l'arête de distribution (29a) du canal arrière (29) est placée en un endroit situé à proximité du pied de palette (26) et qui croise un gradin (23a) entre le volume de pied (23) et la fente (22) quand la palette se déplace devant l'orifice d'admission ou l'orifice d'échappement (31, 33).
7. Pompe ou moteur cellulaire à palettes selon l'une des revendications 1 à 6, caractérisé en ce qu'un chevauchement d'ouverture est maintenu lors de la libération et de l'obturation des canaux de palettes (27, 29).
8. Pompe ou moteur cellulaire à palettes selon l'une des revendications 1 à 7, caractérisé en ce que les volumes de pied (23) sont reliés aux zones d'aspiration (31) et aux zones de refoulement (33) de la machine simplement par l'intermédiaire des canaux de palettes (27, 29).
9. Pompe ou moteur cellulaire à palettes selon l'une des revendications 1 à 8, les têtes des parties de palette (24a, 24b) étant agencées asymmetrique- ment, caractérisé en ce que les surfaces de tête (25a, 25b) placées à l'extérieur sont réalisées plus étroites que des surfaces de tête placées à l'intérieur et délimitant le volume de tête (25c) de manière que la pression d'application produite hydrauliquement soit exactement suffisamment grande pour assurer l'étanchéité - en considération de la pression de service prévue pour la machine.
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
DE8282108045T DE3271561D1 (en) 1982-09-01 1982-09-01 Vane pump or motor
EP19820108045 EP0101758B1 (fr) 1982-09-01 1982-09-01 Pompe ou moteur à palettes

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 EP0101758A1 (fr) 1984-03-07
EP0101758B1 true 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)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6503071B2 (en) * 2000-12-04 2003-01-07 Thomas C. Edwards High speed UniVane fluid-handling device
JP2003120497A (ja) * 2001-10-16 2003-04-23 Ebara Corp ベーン式回転機械
CN103821711A (zh) * 2012-11-19 2014-05-28 六汉企业股份有限公司 泵结构
CN121345769A (zh) * 2025-12-19 2026-01-16 台州弘一液压伺服科技有限公司 防失压的多用叶片泵

Family Cites Families (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
US3230840A (en) * 1963-05-22 1966-01-25 Elliott F Hanson Fluid operated device
GB1351695A (en) * 1970-09-22 1974-05-01 Generalvacuum Spa Sliding vane fluid-operated motor or engine
JPS5248109A (en) * 1975-10-15 1977-04-16 Ishikawajima Harima Heavy Ind Co Ltd Wing type rotary fluid machine

Also Published As

Publication number Publication date
EP0101758A1 (fr) 1984-03-07
DE3271561D1 (en) 1986-07-10

Similar Documents

Publication Publication Date Title
DE60108798T2 (de) Pumpe mit veränderlicher Verdrängung
DE4124583C2 (de) Flügelzellenpumpe mit variabler Leistung
DE19917506B4 (de) Verstellbare Flügelzellenpumpe
EP3489474A1 (fr) Régulateur de phase d'arbre à cames pourvu de clapet anti-retour de type anneau
DE3313390C2 (fr)
DE4119207A1 (de) Hydraulikpumpe fuer eine servolenkanordnung
WO1986004393A1 (fr) Pompe rotative a ailettes
DE2512433C2 (de) Doppelhubige Drehkolbenpumpe, insbesondere für Hilfskraftlenkungen
WO2008148472A1 (fr) Pompe à palettes
DE10200176B4 (de) Elektrokraftstoffpumpe
WO1996009475A1 (fr) Systeme de regulation pour pompes de refoulement
WO1993009349A1 (fr) Pompe a ailettes
EP0101758A1 (fr) Pompe ou moteur à palettes
DE4438696A1 (de) Flügelzellenpumpe
DE2038086C3 (de) Axialkolbenmaschine
DE3242983A1 (de) Regelbare fluegelzellenpumpe
WO2001059301A1 (fr) Dispositif de regulation pour pompes volumetriques
EP1025363B1 (fr) Pompe volumetrique
DE102004020603A1 (de) Volumenstromgeregelte Flügelzellenpumpe
DE19909963B4 (de) Verdrängerpumpe
DE69911386T2 (de) Einstellbare spiegelplatte für eine hydraulische pumpe oder motor
DE4109149A1 (de) Steuerscheibe fuer fluegelzellenpumpe
WO2009019095A1 (fr) Pompe cellulaire à aubes à pression réduite sur les aubes
DE69606315T2 (de) Flügelzellen pumpe
DE4126217A1 (de) Regeleinrichtung fuer verdraengerpumpen

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT SE

17P Request for examination filed

Effective date: 19840407

ITF It: translation for a ep patent filed
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VICKERS SYSTEMS GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT SE

REF Corresponds to:

Ref document number: 3271561

Country of ref document: DE

Date of ref document: 19860710

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19930809

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930813

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19930816

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19930902

Year of fee payment: 12

ITTA It: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940902

EAL Se: european patent in force in sweden

Ref document number: 82108045.4

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950601

EUG Se: european patent has lapsed

Ref document number: 82108045.4

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST