EP0410824B1 - Entlüftungsvorrichtung für die Ansaugkammer einer Pumpe - Google Patents

Entlüftungsvorrichtung für die Ansaugkammer einer Pumpe Download PDF

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Publication number
EP0410824B1
EP0410824B1 EP19900401741 EP90401741A EP0410824B1 EP 0410824 B1 EP0410824 B1 EP 0410824B1 EP 19900401741 EP19900401741 EP 19900401741 EP 90401741 A EP90401741 A EP 90401741A EP 0410824 B1 EP0410824 B1 EP 0410824B1
Authority
EP
European Patent Office
Prior art keywords
receptacle
pump
suction chamber
tank
pressure
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 - Lifetime
Application number
EP19900401741
Other languages
English (en)
French (fr)
Other versions
EP0410824A1 (de
Inventor
Michel Bendix Europe Services Techniques Denrée
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.)
AlliedSignal Europe Services Techniques
Original Assignee
Bendix Europe Services Techniques SA
AlliedSignal Europe Services Techniques
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 Bendix Europe Services Techniques SA, AlliedSignal Europe Services Techniques filed Critical Bendix Europe Services Techniques SA
Publication of EP0410824A1 publication Critical patent/EP0410824A1/de
Application granted granted Critical
Publication of EP0410824B1 publication Critical patent/EP0410824B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs

Definitions

  • pressure accumulators are provided, the role of which is to maintain a reserve of buffer pressure so as to limit the operating frequency of the pump.
  • These accumulators commonly include a membrane isolating a volume of gas under pressure from the brake fluid. It has been found that, despite the care and the improvements brought to the production of the membrane, it has a certain degree of permeability for gases. However, such a release of gas in the liquid can be reduced to a negligible value by installing a leakage device making it possible to deplete these accumulators when the vehicle thus equipped is not in operation.
  • the object of the present invention is a device intended to allow the evacuation of these gases and to ensure good priming of the pump.
  • the device is arranged in a first hydraulic circuit comprising a reservoir containing liquid under low pressure, this reservoir being connected, by a first conduit, to a suction chamber of a pump, this pump discharging liquid under high pressure towards a second hydraulic circuit.
  • the device comprises a container in which is formed an orifice open to atmospheric pressure, and a second conduit connected to the container, this conduit being connected to the highest point of the suction chamber so as to allow a path of liquid under low pressure between the reservoir and the container via the suction chamber.
  • the reservoir and the container constitute only one element.
  • the device illustrated in FIG. 1 preferably comprises a container 3 intended to receive a liquid under low pressure and comprising, in its upper part, an orifice 8 open to atmospheric pressure.
  • a container 3 intended to receive a liquid under low pressure and comprising, in its upper part, an orifice 8 open to atmospheric pressure.
  • means are provided to prevent the liquid from being discharged through the orifice 8; preferably, these means consist of a ball 9 capable of floating on the liquid and arranged in the axis of the orifice; the axial trajectory of the ball is maintained by a guide element 10 provided for this purpose; the ball has a diameter such that, in its maximum stroke, it closes the orifice to prevent any outflow of liquid.
  • a first hydraulic circuit comprises a reservoir 1 containing a liquid under low pressure and communicating, through a first conduit 6, with a suction chamber 2.
  • the container 3 is connected, via a second conduit 5 at the point higher of the suction chamber 2; in this way, a path of liquid under low pressure is determined between the reservoir and the container 3, via the suction chamber 2.
  • a filter 11 is arranged between the reservoir and the suction chamber 2; this filter fixes the impurities contained in the liquid under low pressure but is not completely permeable to gas.
  • the second hydraulic circuit 7 comprises a diaphragm type pressure accumulator making it possible to maintain the pressure of the liquid in the circuit when the pump is not in operation, and a leakage device making it possible to limit the diffusion of gas into the liquid by depletion of the accumulator; there is no need to describe this second circuit in more detail because it does not intervene in obtaining the function specific to the device according to the invention.
  • the device shown in Figure 1 will work in this way: when the pump enters a period of non-operation, the membrane relaxes, thanks to a constant leakage of liquid provided so that the contact between the membrane and the liquid is reduced to an area of negligible area. The remaining gas will migrate towards the first hydraulic circuit; instead of accumulating in the suction chamber 2, the gas will naturally follow the path defined by the second conduit 5, in the direction of the container 3 and finally escape through the orifice 8.
  • the container 3 is one with the reservoir and the second conduit 5 then determines a path of liquid between the reservoir 1 and the highest point of the suction chamber 2
  • a filter 12 is disposed between this point and the reservoir 1 so as to fix the impurities of the liquid when the pump will draw liquid under low pressure in the reservoir.
  • the container could take the form of a tube, one end of which is exposed to atmospheric pressure; on the other hand, this tube may be equipped with means preventing the liquid from escaping.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (5)

  1. Vorrichtung, die es erlaubt, Gas zu evakuieren und ein gutes Ansaugen einer Pumpe (4) sicherzustellen, wobei diese Vorrichtung in einem ersten Hydraulikkreis angeordnet ist, der ein Reservoir (1) aufweist, welches unter niedrigem Druck stehende Flüssigkeit enthält, wobei dieses Reservoir mittels einer ersten Leitung (6) mit einer Ansaugkammer (2) der Pumpe (4) verbunden ist und diese Pumpe Flüssigkeit unter hohem Druck in Richtung eines zweiten Hydraulikkreises (7) fördert, wobei diese Vorrichtung dadurch gekennzeichnet ist, daß sie einen Behälter (3), in dem eine zum Atmosphärendruck geöffnete Öffnung (8) vorgesehen ist, und eine zweite, mit dem Behälter verbundenen Leitung (5) enthält, wobei die zweite Leitung (5) mit dem höchsten Punkt der Ansaugkammer (2) verbunden ist, um einen Weg für unter niedrigem Druck stehende Flüssigkeit zwischen dem Reservoir und dem Behälter (3) über die Ansaugkammer (2) zu ermöglichen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Behälter (3) in Form eines Rohres ausgebildet ist, dessen eines Ende offen ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Behälter (3) aus einem Stück mit dem Reservoir (1) besteht, so daß nur das Reservoir (1) gebildet ist.
  4. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Behälter (3) Mittel enthält, die das Entweichen der Flüssigkeit verhindern.
  5. Vorrichtung nach Anspruch 4, gekennzeichnet dadurch, daß diese Mittel durch eine schwimmende Kugel (9) gebildet sind, die zwischen der unter niedrigem Druck stehenden Flüssigkeit und der Öffnung eingesetzt ist und verschiebbar von einem zu diesem Zweck vorgesehenen Leitelement (10) gehalten wird.
EP19900401741 1989-07-27 1990-06-20 Entlüftungsvorrichtung für die Ansaugkammer einer Pumpe Expired - Lifetime EP0410824B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910132 1989-07-27
FR8910132A FR2650343B1 (fr) 1989-07-27 1989-07-27 Dispositif de degazage de la chambre d'aspiration d'une pompe

Publications (2)

Publication Number Publication Date
EP0410824A1 EP0410824A1 (de) 1991-01-30
EP0410824B1 true EP0410824B1 (de) 1993-08-25

Family

ID=9384200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900401741 Expired - Lifetime EP0410824B1 (de) 1989-07-27 1990-06-20 Entlüftungsvorrichtung für die Ansaugkammer einer Pumpe

Country Status (5)

Country Link
EP (1) EP0410824B1 (de)
JP (1) JPH0364673A (de)
DE (1) DE69002898T2 (de)
ES (1) ES2043310T3 (de)
FR (1) FR2650343B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002339874A (ja) * 2001-05-16 2002-11-27 Mikuni Adec Corp オイルポンプ及び潤滑装置
GB2611768A (en) * 2021-10-13 2023-04-19 Stratec Se Device for fluid loading

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE127636C (de) *
DE873251C (de) * 1951-06-12 1953-04-13 Linde Eismasch Ag Doppeltwirkende Fluessiggaspumpe
FR2045650A1 (de) * 1969-06-16 1971-03-05 Gratzmuller J
FR2063396A5 (de) * 1969-10-14 1971-07-09 Fenet Ets
GB1451437A (en) * 1972-11-09 1976-10-06 Bridgemore Eng Ltd Air bleeding device for a pressurised lqiuid supply system
US4104004A (en) * 1976-11-12 1978-08-01 The De Laval Separator Company Air eliminator for pumps

Also Published As

Publication number Publication date
JPH0364673A (ja) 1991-03-20
EP0410824A1 (de) 1991-01-30
ES2043310T3 (es) 1993-12-16
DE69002898D1 (de) 1993-09-30
FR2650343A1 (fr) 1991-02-01
FR2650343B1 (fr) 1994-04-15
DE69002898T2 (de) 1993-12-23

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