FR2578617A1 - Solenoid valve with deferred opening - Google Patents

Solenoid valve with deferred opening Download PDF

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Publication number
FR2578617A1
FR2578617A1 FR8503795A FR8503795A FR2578617A1 FR 2578617 A1 FR2578617 A1 FR 2578617A1 FR 8503795 A FR8503795 A FR 8503795A FR 8503795 A FR8503795 A FR 8503795A FR 2578617 A1 FR2578617 A1 FR 2578617A1
Authority
FR
France
Prior art keywords
core
valve
solenoid valve
spring
bore
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
FR8503795A
Other languages
French (fr)
Other versions
FR2578617B1 (en
Inventor
Gerard Camus
Joel Andre Dessirieix
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.)
Automobiles Peugeot SA
Original Assignee
Automobiles Peugeot 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 Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Priority to FR8503795A priority Critical patent/FR2578617B1/en
Publication of FR2578617A1 publication Critical patent/FR2578617A1/en
Application granted granted Critical
Publication of FR2578617B1 publication Critical patent/FR2578617B1/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G17/00Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
    • B60G17/02Spring characteristics, e.g. mechanical springs and mechanical adjusting means
    • B60G17/04Spring characteristics, e.g. mechanical springs and mechanical adjusting means fluid spring characteristics
    • B60G17/056Regulating distributors or valves for hydropneumatic systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00Actuating devices; Operating means; Releasing devices
    • F16K31/12Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/40Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor
    • F16K31/406Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston
    • F16K31/408Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor with electrically-actuated member in the discharge of the motor acting on a piston the discharge being effected through the piston and being blockable by an electrically-actuated member making contact with the piston
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K39/00Devices for relieving the pressure on the sealing faces
    • F16K39/02Devices for relieving the pressure on the sealing faces for lift valves

Abstract

The subject of the present invention is a solenoid valve of the all-or-nothing type comprising a core plunger 14, which is hydraulically balanced and suitable, in one of its positions, for providing closure of an outlet orifice arranged axially, a spring 17 tending to bring the core to its closed position. According to the invention this solenoid valve comprises an intermediate flap 8 hydraulically balanced in the open position, which is arranged between the core plunger 14 and the outlet orifice 5 and comprises a calibrated hole 13, arranged axially and capable of being plugged by the plunger 14, a second spring 11 whose load is less than that of the first 17, tending to move the flap 8 away from the orifice.

Description

La présente invention concerne une vanne du type tout ou rien comportant un noyau plongeur, hydrauliquement équilibré propre, dans l'une de ses positions assurer la fermeture d'un orifice de sortie disposé axialement, un ressort tendant à amener le noyau dans sa position de fermeture. The present invention relates to an all-or-nothing valve comprising a clean hydraulically balanced plunger core, in one of its positions ensuring the closure of an axially arranged outlet orifice, a spring tending to bring the core into its position closing.

Lorsque l'électro-vanne est alimentée, le noyau se déplace à l'encontre du ressort et permet la sortie du fluide. Mais l'expérience montre que la pression à la sortie de la vanne devenant alors égale à la pression d'entrée en un temps extrêmement court, l'ouverture de la vanne produit un bruit qui peut être gênant pour l'usager. C'est le cas notamment des électro-vannes qui sont interposées entre un vérin de suspension d'un véhicule automobile et le correcteur de hauteur pour empêcher le vérin de se "dégonfler" à l'arrêt si une fuite se produit dans le correcteur de hauteur, ce qui entrainerait un affaissement de la partie suspendue du véhicule. When the solenoid valve is energized, the core moves against the spring and allows the fluid to exit. However, experience shows that the pressure at the outlet of the valve then becoming equal to the inlet pressure in an extremely short time, the opening of the valve produces a noise which can be annoying for the user. This is particularly the case for solenoid valves which are interposed between a suspension cylinder of a motor vehicle and the height corrector to prevent the cylinder from "deflating" when stationary if a leak occurs in the corrector of height, which would cause the suspended part of the vehicle to sag.

La présente invention a pour objet une électrovanne du type ci-dessus perfectionnée de manière à remédier à cet inconvénient. The present invention relates to a solenoid valve of the above type improved so as to remedy this drawback.

L'électro-vanne selon l'invention est caractérisée en ce qu'elle comporte un clapet intermédiaire hydrauliquement équilibré en position d'ouverture, qui est disposé entre le noyau plongeur et l'orifice de sortie et comporte un trou calibré, disposé axialement et obturable par le noyau, un deuxième ressort dont la charge est inférieure à celle du premier, tendant à éloigner le clapet de l'orifice. The solenoid valve according to the invention is characterized in that it comprises an intermediate valve hydraulically balanced in the open position, which is arranged between the plunger core and the outlet orifice and has a calibrated hole, disposed axially and closable by the core, a second spring whose load is lower than that of the first, tending to move the valve away from the orifice.

Lorsque l'électro-vanne n'est pas alimentée, le ressort agissant sur le noyau déplace ce dernier de façon à obturer le trou calibré du clapet; il déplace également le clapet de façon à l'appliquer sur l'orifice de sortie. When the solenoid valve is not supplied, the spring acting on the core displaces the latter so as to close the calibrated hole of the valve; it also moves the valve so as to apply it to the outlet.

Lorsqu'elle est alimentée, l'orifice de sortie est mis en communication avec la haute pression; mais cette mise en communication se fait en deux temps. When supplied, the outlet is placed in communication with the high pressure; but this communication is done in two stages.

Dans un premier temps, le noyau plongeur libère le trou calibré du clapet; le fluide parvient ainsi à l'orifice de sortie par l'intermédiaire du trou calibré et la pression de sortie monte lentement. Le clapet reste maintenu appliqué sur l'orifice de sortie par la haute pression. Initially, the plunger core releases the calibrated hole of the valve; the fluid thus reaches the outlet via the calibrated hole and the outlet pressure rises slowly. The valve remains maintained applied to the outlet orifice by the high pressure.

Quand la valeur de la pression de sortie atteint celle de la haute pression, le clapet est équilibré et son ressort l'éloigne de l'orifice de sortie. Le fluide peut alors passer directement dans cet orifice. When the value of the outlet pressure reaches that of the high pressure, the valve is balanced and its spring moves it away from the outlet orifice. The fluid can then pass directly into this orifice.

On a décrit ci-après, à titre d'exemple non limitatif, un mode de réalisation de l'électro-vanne selon l'invention, avec référence au dessin annexé dans lequel
La Figurè 1 est une vue en plan de l'électro-vanne;
La Figure 2 en est une coupe suivant II-II de la
Figure 1;
La Figure 3 est une vue en coupe transversale du
clapet suivant III-III de la Figure 2;
La Figure 4 est une vue en coupe transversale du
noyau plongeur suivant IV-IV de la Figure 2;
Les Figures 5 et 6 sont des vues de détail de la
Figure 2, lors de l'ouverture de l'electro-vanne.
An embodiment of the solenoid valve according to the invention has been described below, by way of non-limiting example, with reference to the appended drawing in which
Figure 1 is a plan view of the solenoid valve;
Figure 2 is a section along II-II of the
Figure 1;
Figure 3 is a cross-sectional view of the
valve according to III-III of Figure 2;
Figure 4 is a cross-sectional view of the
plunger core according to IV-IV of Figure 2;
Figures 5 and 6 are detailed views of the
Figure 2, when opening the solenoid valve.

Telle qu'elle est représentée au dessin, l'électrovanne selon l'invention comprend un corps 1 dans lequel est ménagé un alésage 2. Dans le fond de cet alésage, débouchent d'une part un perçage excentré 3 destiné à être relié à la source de haute pression par un raccord 4 et d'autre part un perçage axial 5 destiné à être relié à l'utilisation par un raccord 6. As shown in the drawing, the solenoid valve according to the invention comprises a body 1 in which is formed a bore 2. In the bottom of this bore, on the one hand emerge an eccentric bore 3 intended to be connected to the high pressure source by a connector 4 and on the other hand an axial bore 5 intended to be connected for use by a connector 6.

Dans l'alésage 2 est emmanché un tube 7 qui s'étend vers le haut, au-delà du corps 1. Dans la partie inférieure de ce tube peut coulisser la tête élargie -8a d'un clapet 8 pouvant obturer l'orifice d'entrée du perçage 5
Cette tête élargie comporte d'une part des rainures longitudinales extérieures 9 et d'autre part une portées0; un ressort ll-interposé entre le fond de cette portée et le fond de l'alésage 2 tend à déplacer le clapet 8 vers le haut et ainsi à découvrir le perçage 5. Ce clapet est en outre muni d'un perçage axial 12 débouchant à la partie supérieure du clapet par un trou calibré 13.
In the bore 2 is fitted a tube 7 which extends upwards, beyond the body 1. In the lower part of this tube can slide the enlarged head -8a of a valve 8 capable of closing the orifice d hole 5
This enlarged head comprises on the one hand external longitudinal grooves 9 and on the other hand a litters0; a ll-spring interposed between the bottom of this bearing and the bottom of the bore 2 tends to move the valve 8 upwards and thus to discover the bore 5. This valve is furthermore provided with an axial bore 12 opening at the upper part of the valve by a calibrated hole 13.

Un noyau plongeur 14 disposé au-dessus du clapet 8, peut également coulisser dans le tube 7; ce noyau comporte des rainures longitudinales extérieures 15. Sa course vers le haut est limitée par un bouchon 16 emmanché dans l'extrémité supérieure du tube 7. Un ressort 17 dont la charge est supérieure à celle du ressort 11, est disposé dans un perçage borgne 18 du noyau 14 et prend appui sur le bouchon 16. Ce ressort tend ainsi à presser l'extrémité du noyau 14 sur le clapet 8 en obturant le trou calibré 13, il tend également à déplacer le clapet vers le bas en obturant le perçage 5. A plunger core 14 disposed above the valve 8, can also slide in the tube 7; this core has external longitudinal grooves 15. Its upward stroke is limited by a plug 16 fitted in the upper end of the tube 7. A spring 17 whose load is greater than that of the spring 11, is disposed in a blind bore 18 of the core 14 and bears on the plug 16. This spring thus tends to press the end of the core 14 on the valve 8 by closing the calibrated hole 13, it also tends to move the valve down while closing the hole 5 .

Le tube 7 est entouré par un bobinage 19 qui est lui-même entouré par une bride 20 formant armature et fixée sur le boîtier 1 par des vis 21. Le bouchon 16 traverse l'armature et assure le centrage. La référence 22 désigne une plaque qui est logée à l'intérieur de la bride, entoure le tube 7, et forme renfort magnétique d'armature. The tube 7 is surrounded by a coil 19 which is itself surrounded by a flange 20 forming an armature and fixed to the housing 1 by screws 21. The plug 16 passes through the armature and ensures centering. The reference 22 designates a plate which is housed inside the flange, surrounds the tube 7, and forms a magnetic reinforcement of the armature.

Lorsque l'alimentation du bobinage 19 est coupée, le ressort 17 maintient le clapet et le noyau dans des positions dans lesquelles le perçage de sortie 5 est isolé du perçage 3. La haute pression est établie autour du clapet 8 grâce à ses rainures 9 ainsi qu'autour du noyau 14 grâce aux rainures 15. Le noyau est ainsi équilibre, c'est-à-dire que la haute pression est sans effet sur lui. La haute pression tend également à maintenir le clapet 8 sur le fond de l'alésage 2. When the supply to the winding 19 is cut off, the spring 17 maintains the valve and the core in positions in which the outlet bore 5 is isolated from the bore 3. High pressure is established around the valve 8 by virtue of its grooves 9 thus that around the core 14 thanks to the grooves 15. The core is thus balanced, that is to say that the high pressure has no effect on it. The high pressure also tends to hold the valve 8 on the bottom of the bore 2.

Lorsque le bobinage 19 devient alimenté, le noyau 14 est déplacé vers le haut. Le fluide à haute pression passe dans le perçage 5 par l'intermédiaire du trou calibré 13 et du perçage 12. La perte de charge de au trou calibré maintient le clapet 8 sur son siège (Figure 5). When the winding 19 becomes energized, the core 14 is moved upwards. The high pressure fluid passes through the bore 5 through the calibrated hole 13 and the bore 12. The pressure drop from the calibrated hole keeps the valve 8 on its seat (Figure 5).

Lorsque la pression dans le perçage 5 devient égale à la haute pression, le clapet 8 devient équilibré et se soulève sous l'action du ressort 11. Le fluide à haute pression peut alors passer directement dans le perçage 5 (Figure 6).  When the pressure in the bore 5 becomes equal to the high pressure, the valve 8 becomes balanced and lifts under the action of the spring 11. The high pressure fluid can then pass directly into the bore 5 (Figure 6).

L'expérience montre que, même si la pression dans le circuit de sortie a chuté notablement, l'ouverture de l'électro-vanne se fait sans bruit appréciable. Experience shows that, even if the pressure in the outlet circuit has dropped significantly, the opening of the solenoid valve is made without appreciable noise.

I1 va de soi que la présente invention ne doit pas etre considérée comme limitée au mode de réalisation décrit et représenté, mais en couvre, toutes les variantes.  It goes without saying that the present invention should not be considered as limited to the embodiment described and shown, but covers all variants thereof.

Claims (1)

RevendicationClaim Electro-vanne du type tout ou rien comportant un noyau plongeur (14), hydrauliquement équilibré propre, dans l'une de ses positions, à assurer la fermeture d'un orifice de sortie disposé axialement, un ressort (17) tendant à amener le noyau dans sa position de fermeture, caractérisée en ce qu'elle comporte un clapet intermédiaire (8) hydrauliquement équilibré en position d'ouverture, qui est disposé entre le noyau plongeur (14) et l'orifice de sortie (5) et comporte un trou calibré (13), disposé axialement et obturable par le noyau (14), un deuxième ressort (11) dont la charge est inférieure à celle du premier (17), tendant à éloigner le clapet (8) de l'orifice.  All-or-nothing type solenoid valve comprising a hydraulically balanced plunger core (14) capable, in one of its positions, of ensuring the closure of an axially arranged outlet orifice, a spring (17) tending to bring the core in its closed position, characterized in that it comprises an intermediate valve (8) hydraulically balanced in the open position, which is disposed between the plunger core (14) and the outlet orifice (5) and comprises a calibrated hole (13), axially disposed and closable by the core (14), a second spring (11) whose load is lower than that of the first (17), tending to move the valve (8) away from the orifice.
FR8503795A 1985-03-11 1985-03-11 DELAYED OPENING VALVE Expired FR2578617B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8503795A FR2578617B1 (en) 1985-03-11 1985-03-11 DELAYED OPENING VALVE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8503795A FR2578617B1 (en) 1985-03-11 1985-03-11 DELAYED OPENING VALVE

Publications (2)

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FR2578617A1 true FR2578617A1 (en) 1986-09-12
FR2578617B1 FR2578617B1 (en) 1987-11-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263346A2 (en) * 1986-10-03 1988-04-13 Eaton S.A.M. Two-way fluid valve
EP0490262A2 (en) * 1990-12-08 1992-06-17 Fichtel & Sachs AG Check valve
EP0847885A2 (en) * 1996-12-12 1998-06-17 WABCO GmbH Pressure fluid suspension for a vehicle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2197320A (en) * 1937-12-06 1940-04-16 Frick Co Electric control valve
FR1110895A (en) * 1954-07-19 1956-02-17 Solenoid valves
FR1120877A (en) * 1954-03-24 1956-07-16 Shut-off device for high pressure gas specially main shut-off valve for oxygen cylinder
US3841353A (en) * 1973-06-19 1974-10-15 Union Carbide Corp Anti-surge oxygen cylinder valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2197320A (en) * 1937-12-06 1940-04-16 Frick Co Electric control valve
FR1120877A (en) * 1954-03-24 1956-07-16 Shut-off device for high pressure gas specially main shut-off valve for oxygen cylinder
FR1110895A (en) * 1954-07-19 1956-02-17 Solenoid valves
US3841353A (en) * 1973-06-19 1974-10-15 Union Carbide Corp Anti-surge oxygen cylinder valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0263346A2 (en) * 1986-10-03 1988-04-13 Eaton S.A.M. Two-way fluid valve
EP0263346A3 (en) * 1986-10-03 1990-04-25 Eaton S.A.M. Two-way fluid valve two-way fluid valve
EP0490262A2 (en) * 1990-12-08 1992-06-17 Fichtel & Sachs AG Check valve
EP0490262A3 (en) * 1990-12-08 1992-11-19 Fichtel & Sachs Ag Check valve
US5449055A (en) * 1990-12-08 1995-09-12 Fichtel & Sachs Ag Stop valve device
EP0847885A2 (en) * 1996-12-12 1998-06-17 WABCO GmbH Pressure fluid suspension for a vehicle
EP0847885A3 (en) * 1996-12-12 1999-10-27 WABCO GmbH Pressure fluid suspension for a vehicle

Also Published As

Publication number Publication date
FR2578617B1 (en) 1987-11-13

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