FR2672342A1 - Fluid circuit with recovered leaks - Google Patents

Fluid circuit with recovered leaks Download PDF

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Publication number
FR2672342A1
FR2672342A1 FR9101076A FR9101076A FR2672342A1 FR 2672342 A1 FR2672342 A1 FR 2672342A1 FR 9101076 A FR9101076 A FR 9101076A FR 9101076 A FR9101076 A FR 9101076A FR 2672342 A1 FR2672342 A1 FR 2672342A1
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FR
France
Prior art keywords
fluid
circuit
cell
reservoir
leaks
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
FR9101076A
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French (fr)
Other versions
FR2672342B1 (en
Inventor
Bardoux Daniel
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.)
Bendix Europe Services Techniques SA
Original Assignee
Bendix Europe Services Techniques SA
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 filed Critical Bendix Europe Services Techniques SA
Priority to FR9101076A priority Critical patent/FR2672342A1/en
Publication of FR2672342A1 publication Critical patent/FR2672342A1/en
Application granted granted Critical
Publication of FR2672342B1 publication Critical patent/FR2672342B1/fr
Granted legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
    • B60T13/148—Arrangements for pressure supply
    • 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
    • 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
    • F04B53/04—Draining

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)

Abstract

The invention relates to a fluid circuit comprising at least one pump (10) the suction intake (20) of which is connected to a reservoir of fluid under low pressure (22) and the delivery outlet (12) connected to a user circuit (14). According to the invention, the reservoir (22) is rendered airtight, and a top part (20) of the reservoir (22) is connected via a pipe (26) to a bottom part of a cell (30) for recovering leaks of fluid in the circuit (14), a top part (28) of the cell being connected to atmospheric pressure, the volume in the pipe (26) being substantially less than that of the recovery cell (30).

Description

CIRCUIT FLUIDIQUE A FUITES RECUPEREES
La présente invention concerne un circuit fluidique à fuites récupérées. On trouve des circuits fluidiques dans de nombreux domaines d'application. Plus les circuits sont complexes et plus les sources de fuite de fluide inhérentes à la complexité augmentent.FLUIDIC CIRCUIT WITH RECOVERED LEAKS
The present invention relates to a fluidic circuit with recovered leaks. Fluid circuits are found in many fields of application. The more complex the circuits, the more the sources of fluid leakage inherent in the complexity increase.

Il était jusqu'à présent d'usage de laisser les fuites s'écouler vers l'extérieur et de ne pas tenter de les récupérer. Toutefois, les préoccupations telles que la sauvegarde de l'environnement, associées à une recherche d'économie et de recyclage du fluide utilisé ont mis en relief la nécessité de récupérer le fluide de fuite dans les circuits hydrauliques. En outre, la récupération du fluide de fuite permet de mettre en oeuvre dans le circuit utilisateur des composants à fuite contrôlée. Until now, it was customary to let the leaks flow out and not to try to recover them. However, concerns such as the protection of the environment, associated with a search for economy and recycling of the fluid used have highlighted the need to recover the leaking fluid in the hydraulic circuits. In addition, the recovery of the leakage fluid makes it possible to use components with controlled leakage in the user circuit.

La présente invention a donc ce but. The present invention therefore has this aim.

L'invention concerne donc un circuit fluidique comprenant au moins une pompe dont l'entrée d'aspiration est reliée à un réservoir de fluide sous basse pression et la sortie de refoulement reliée à un circuit utilisateur. The invention therefore relates to a fluid circuit comprising at least one pump, the suction inlet of which is connected to a reservoir of fluid under low pressure and the discharge outlet of which is connected to a user circuit.

Selon l'invention le réservoir est rendu étanche à l'air et une partie haute du réservoir est reliée par un conduit à une partie basse d'une cellule de récupération des fuites de fluide dans le circuit, une partie haute de cette cellule étant reliée à la pression atmosphérique le volume du conduit est substantiellement inférieur à celui de la cellule de récupération. According to the invention the reservoir is made airtight and an upper part of the reservoir is connected by a conduit to a lower part of a cell for recovering fluid leaks in the circuit, an upper part of this cell being connected at atmospheric pressure the volume of the conduit is substantially less than that of the recovery cell.

L'invention sera mieux comprise et d'autres buts, avantages et caractéristiques de celle-ci apparaîtront plus clairement à la lecture de la description qui suit à laquelle une planche de dessin est annexée sur laquelle
- La Figure Unique représente schématiquement un circuit hydraulique selon l'invention.The invention will be better understood and other objects, advantages and characteristics thereof will appear more clearly on reading the description which follows to which a drawing board is appended, on which
- The Single Figure schematically represents a hydraulic circuit according to the invention.

En référence maintenant à cette Figure Unique, le circuit hydraulique comprend une pompe 10 dont la sortie de refoulement 12 est reliée à un circuit utilisateur 14. D'une manière connue et non nécessaire, la sortie de refoulement 12 est également reliée à un accumulateur de fluide sous haute pression 16.  Referring now to this Single Figure, the hydraulic circuit comprises a pump 10, the discharge outlet 12 of which is connected to a user circuit 14. In a known and unnecessary manner, the discharge outlet 12 is also connected to an accumulator of fluid under high pressure 16.

Dans l'exemple représenté, le circuit utilisateur 14 est un circuit hydraulique de freinage commandant un moteur de frein d'une roue 18 d'un véhicule. Toutefois, le circuit utilisateur 14 peut être de toute autre nature. In the example shown, the user circuit 14 is a hydraulic braking circuit controlling a brake motor of a wheel 18 of a vehicle. However, the user circuit 14 can be of any other nature.

L'entrée d'aspiration 20 de la pompe 10 est reliée à un point bas d'un réservoir 22 de fluide sous basse pression. The suction inlet 20 of the pump 10 is connected to a low point of a reservoir 22 of fluid under low pressure.

Les fuites de fluide dans le circuit utilisateur 14 sont regroupées et récupérées dans une cellule de récupération 30. Un point bas de cette cellule 30 est relié par l'intermédiaire d'un conduit 26 à un point haut du réservoir 22 dont le bouchon 24 est rendu étanche à l'air. Le bouchon 28 de la cellule 30 n'est pas hermétique, de telle manière que le fluide contenu dans la cellule 30 soit soumis à la pression atmosphérique. The leaks of fluid in the user circuit 14 are grouped together and recovered in a recovery cell 30. A low point of this cell 30 is connected via a conduit 26 to a high point of the reservoir 22 whose cap 24 is made airtight. The plug 28 of the cell 30 is not hermetic, so that the fluid contained in the cell 30 is subjected to atmospheric pressure.

Ainsi, lorsqu'il n'y a pas de fuite, le réservoir 22 est mis à la pression atmosphérique par l'intermédiaire du conduit 26, de la cellule 30 et du bouchon 28 de celle-ci. Lorsque la cellule 30 contient un fluide de fuite, ce fluide est directement aspiré par la pompe 10 lorsqu'elle est mise en service, la dépression se créant dans le réservoir 22 aspirant le fluide par le conduit 26. Thus, when there is no leakage, the reservoir 22 is brought to atmospheric pressure via the conduit 26, the cell 30 and the plug 28 thereof. When the cell 30 contains a leakage fluid, this fluid is directly sucked in by the pump 10 when it is put into service, the vacuum being created in the reservoir 22 sucking the fluid through the conduit 26.

Pour un bon fonctionnement du circuit et pour éviter que la cellule déborde lors de l'arrêt de la pompe, le volume du conduit 26 doit être substantiellement inférieur au volume intérieur de la cellule 30. For the circuit to work properly and to prevent the cell from overflowing when the pump stops, the volume of the conduit 26 must be substantially less than the interior volume of the cell 30.

On obtient ainsi un circuit fluidique avec récupération du fluide de fuite. Il est dès lors possible de mettre en oeuvre dans le circuit utilisateur des composants à fuite contrôlée et même, dans certains cas précis, de faire l'économie d'une étanchéité. A fluid circuit is thus obtained with recovery of the leakage fluid. It is therefore possible to use components with controlled leakage in the user circuit and even, in certain specific cases, to save on sealing.

Bien que seul un mode de réalisation de l'invention ait été décrit, il est évident que toute modification apportée dans le même esprit ne sortirait pas du cadre de l'invention.  Although only one embodiment of the invention has been described, it is obvious that any modification made in the same spirit would not depart from the scope of the invention.

Claims (1)

REVENDICATION UNIQUESINGLE CLAIM 1. Circuit fluidique comprenant au moins une pompe (10) dont l'entrée d'aspiration (20) est reliée à un réservoir de fluide sous basse pression (22) et la sortie de refoulement (12) reliée à un circuit utilisateur (14) caractérisé en ce que le dit réservoir (22) est rendu étanche à l'air et qu'une partie haute (24) du dit réservoir (22) est reliée par un conduit (26) à une partie basse d'une cellule de récupération (30) des fuites de fluide dans le dit circuit (14), une partie haute (28) de la dite cellule étant reliée à la pression atmosphérique, le volume du dit conduit (26) étant substantiellement inférieur à celui de la dite cellule de récupération (30).  1. Fluid circuit comprising at least one pump (10), the suction inlet (20) of which is connected to a low-pressure fluid reservoir (22) and the discharge outlet (12) of which is connected to a user circuit (14 ) characterized in that said tank (22) is made airtight and that an upper part (24) of said tank (22) is connected by a conduit (26) to a lower part of a cubicle recovery (30) of fluid leaks in said circuit (14), an upper part (28) of said cell being connected to atmospheric pressure, the volume of said conduit (26) being substantially less than that of said cell recovery (30).
FR9101076A 1991-01-31 1991-01-31 Fluid circuit with recovered leaks Granted FR2672342A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9101076A FR2672342A1 (en) 1991-01-31 1991-01-31 Fluid circuit with recovered leaks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9101076A FR2672342A1 (en) 1991-01-31 1991-01-31 Fluid circuit with recovered leaks

Publications (2)

Publication Number Publication Date
FR2672342A1 true FR2672342A1 (en) 1992-08-07
FR2672342B1 FR2672342B1 (en) 1994-12-30

Family

ID=9409218

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9101076A Granted FR2672342A1 (en) 1991-01-31 1991-01-31 Fluid circuit with recovered leaks

Country Status (1)

Country Link
FR (1) FR2672342A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB535936A (en) * 1939-09-25 1941-04-28 Automotive Prod Co Ltd Improvements in or relating to liquid pumping systems
CH450178A (en) * 1966-07-09 1968-01-15 Tobler Kurt Ing Dipl Diaphragm or piston metering pump
JPS5841278A (en) * 1981-09-04 1983-03-10 Teikoku Denki Seisakusho:Kk Reciprocating pump
FR2618525A1 (en) * 1987-07-22 1989-01-27 Hucke Hans DEVICE FOR PREVENTING LEAKS ON A MECHANICAL APPARATUS COMPRISING A SEALED FLUID CHAMBER, IN PARTICULAR A PUMP
US4945724A (en) * 1989-01-26 1990-08-07 Cincinnati Milacron Inc. Apparatus for collecting hydraulic leakage fluid

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB535936A (en) * 1939-09-25 1941-04-28 Automotive Prod Co Ltd Improvements in or relating to liquid pumping systems
CH450178A (en) * 1966-07-09 1968-01-15 Tobler Kurt Ing Dipl Diaphragm or piston metering pump
JPS5841278A (en) * 1981-09-04 1983-03-10 Teikoku Denki Seisakusho:Kk Reciprocating pump
FR2618525A1 (en) * 1987-07-22 1989-01-27 Hucke Hans DEVICE FOR PREVENTING LEAKS ON A MECHANICAL APPARATUS COMPRISING A SEALED FLUID CHAMBER, IN PARTICULAR A PUMP
US4945724A (en) * 1989-01-26 1990-08-07 Cincinnati Milacron Inc. Apparatus for collecting hydraulic leakage fluid

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 124 (M-218)[1269], 28 mai 1983; & JP-A-58 41 278 (TEIKOKU DENKI) 10-03-1983 *

Also Published As

Publication number Publication date
FR2672342B1 (en) 1994-12-30

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Effective date: 20070930