(19)
(11)EP 2 694 850 B1

(12)EUROPEAN PATENT SPECIFICATION

(45)Mention of the grant of the patent:
23.03.2016 Bulletin 2016/12

(21)Application number: 12720592.0

(22)Date of filing:  02.04.2012
(51)International Patent Classification (IPC): 
F16K 31/06(2006.01)
F16K 27/02(2006.01)
(86)International application number:
PCT/IB2012/051604
(87)International publication number:
WO 2012/131657 (04.10.2012 Gazette  2012/40)

(54)

ELECTRIC VALVE DEVICE, IN PARTICULAR FOR A DEVICE FOR FORMING ICE IN A FRIDGE

ELEKTRISCHE VENTILVORRICHTUNG, INSBESONDERE FÜR EINE VORRICHTUNG ZUR EISBILDUNG IN EINEM KÜHLSCHRANK

DISPOSITIF D'ÉLECTROVANNE, EN PARTICULIER POUR UN DISPOSITIF SERVANT À PRODUIRE DE LA GLACE DANS UN RÉFRIGÉRATEUR


(84)Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30)Priority: 01.04.2011 IT TO20110291

(43)Date of publication of application:
12.02.2014 Bulletin 2014/07

(73)Proprietor: ELBI International S.p.A.
10129 Torino (IT)

(72)Inventors:
  • DA PONT, Paolo
    I-10123 Torino (IT)
  • RENDESI, Maurizio
    I-10090 Villarbasse (Torino) (IT)
  • CAPIZZI, Giosuè
    I-10090 Buttigliera Alta (Torino) (IT)
  • RAVEDATI, Paolo
    I-10024 Moncalieri (Torino) (IT)

(74)Representative: Quinterno, Giuseppe et al
Corso Emilia 8
10152 Torino
10152 Torino (IT)


(56)References cited: : 
JP-A- 60 088 285
US-A- 4 830 333
US-A- 5 358 215
JP-A- 2001 267 124
US-A- 5 234 032
US-A- 5 586 747
  
      
    Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention).


    Description


    [0001] The present invention relates in general to an electric valve device and in particular an electric valve suitable for use in a device for forming ice in a fridge, of the kind defined in the preamble of claim 1.

    [0002] US 5 586 747 discloses an electric valve device of that kind, wherein the tubular guiding formation, in which the movable core is movably mounted, is closed and sealed by a fixed magnetic core and an associated O-ring seal.

    [0003] One object of the present invention is to propose an improved electric valve device for small flow-rates.

    [0004] This and other objects, are achieved according to the invention by an electric valve device of the type specified above, having the features defined in claim 1.

    [0005] Further characteristic features and advantages of the invention will become clear from the following detailed description provided purely by way of a non-limiting example, with reference to the accompanying drawings in which:

    Figure 1 is a perspective view of a twin electric valve device provided according to the present invention;

    Figure 2 is a cross-sectional view along the line II-II of Figure 1;

    Figure 3 is a cross-sectional view along the line III-III of Figure 1; and

    Figure 4 is a perspective view which shows a single-piece moulded plastic body included in the electric valve device according to the preceding figures.



    [0006] In Figure 1 an electric valve device according to the present invention is denoted overall by 1.

    [0007] In the examplary embodiment shown, the device 1 is of the twin type, in that it comprises two electric valves, denoted by A and B, which are formed with a common single-piece valve body 2 with a single tubular inlet conduit 3 and respective outlets 4 for the fluid.

    [0008] The invention is not, however, limited to such a "twin" embodiment, but also embraces within its scope other embodiments comprising an electric valve of the multiple type (three or more units) or single type.

    [0009] Figure 2 shows a cross-sectional view of solely the electric valve A. The electric valve B has the same general configuration.

    [0010] In the embodiment shown, the valve body 2 (see in particular Figure 4) is made as a single piece of moulded plastic. This body 2 has in particular two cylindrical tubular formations 5 (Figures 2 and 4) which are parallel to each other.

    [0011] As can be seen in particular in Figure 2, for each electric valve A (B), the tubular formation 5 of the body 2 extends from a corresponding hollow block or body 6 which forms integrally, in its bottom part, the respective outlet 4 in the form of a tubular formation preferably coaxial with the top tubular formation 5. Alternatively, the outlets 4 may be formed frontally, or oriented in a direction forming an angle with respect to the axis of the corresponding tubular formation 5, but still as one piece with the block or body 6, as for example shown in Figure 5.

    [0012] Inside each hollow block or body 6 there is defined a respective valve chamber 7 (Figures 2 and 3) in which a valve seat 8 coaxial with the tubular formation 5 is formed.

    [0013] Inside the tubular formation 5 of each section or electric valve A, B there is mounted, axially displaceably, a ferromagnetic core 9 which, at the bottom end, carries a closing member 10 intended to co-operate with the corresponding valve seat 8.

    [0014] Conveniently, the valve chamber 7 has transversely the same cross-section as the passage defined inside the tubular formation 5, as can be understood in particular when viewing Figure 2.

    [0015] In the examplary embodiment shown, a respective ferromagnetic element 11, acting as a fixed core, co-operating with the associated movable core 9, is fixed in the distal portion of each tubular formation 5 (Figure 2). A spring 12, tending to push the movable core 9 towards the valve seat 8, is formed between each fixed core 11 and the associated movable core 9.

    [0016] Embodiments without a fixed core are however possible.

    [0017] With reference to Figures 1, 3 and 4, the single-piece body 2 of the electric valve device integrally forms the cylindrical inlet conduit 3. In the embodiment shown by way of example (see Figure 3) the distal end of the cylindrical inlet conduit 3 is provided with a quick-fit coupling 13 for connection of an external inlet pipe (not shown). The quick-fit coupling 13 is for example a coupling manufactured by the company John Guest.

    [0018] Alternatively, in place of a quick-fit coupling, the conduit 3 may be provided with a coupling of another type, known per se, for example a threaded union, preferably formed as one piece with this conduit and with the overall body 2.

    [0019] As can be seen in Figure 3, a flow-rate measuring device, denoted overall by 14, may be conveniently mounted inside the cylindrical inlet conduit 3. In the embodiment shown by way of example this flow-rate measuring device 14 is contained in an essentially cylindrical, cartridge-like, support casing 15 inserted in the passage defined in the inlet conduit 3 and having an external diameter which is close to that of the quick-fit coupling 13.

    [0020] In the embodiment shown the body 15 has a mainly tubular form and, at one end, has a central hub 16 inside which a pin 17 which defines the axis of rotation of a bladed impeller 18 provided with a permanent magnet 19 is axially fixed.

    [0021] During operation, a flow of liquid supplied to the inlet conduit 3 acts on the bladed impeller 18, causing a rotation thereof around the axis defined by the pin 17. The corresponding rotation of the magnet 19 is detected by means of a circuit of the type known per se, the components of which are mounted on a board 20 (Figure 3) housed inside a seat provided in the wall of the conduit 3. The speed of rotation of the impeller 18 is dependent on the flow-rate of the liquid flow acting on it and causes the generation of an electric signal, the frequency (or phase) of which forms a reliable indication of said flow-rate.

    [0022] With reference to Figure 3, the support casing 15 of the flow-rate measuring device 14 has a plurality of outlet openings 21, only one of which can be seen in this figure. During operation, the liquid which flows out through these openings reaches a passage 22 defined inside an inlet header 23 which is formed integrally with the body 2 of the electric valve device. From the inlet conduit 3 the header 23 reaches firstly the chamber 7 of the electric valve B and then the chamber 7 of the electric valve A (see in particular Figure 3).

    [0023] These electric valves A, B are therefore able to control communication between the inlet conduit 3 and the respective outlet 4.

    [0024] In variations of embodiments not shown the support casing 15 may be made as one piece with the end 2.

    [0025] Figure 6 shows in schematic form a variation of embodiment of the flow-rate measuring device 14. In this figure, parts already described have been assigned again the same reference numbers used previously.

    [0026] In the embodiment according to Figure 6, the flow-rate measuring device 14 comprises an impeller or turbine 18 and a permanent magnet 19 integral therewith, rotation thereof being detected by means of a winding 50, the axis of which forms an angle, for example of about 40°, with respect to the axis of the turbine or impeller 18. The winding 50 is arranged around a portion of the cylindrical inlet conduit 3 which, as already mentioned previously, is made of non-magnetic material, in particular plastic. Said portion of the inlet conduit 3 is conveniently surrounded by a tube or sleeve 51 of ferromagnetic material.

    [0027] With reference again to Figure 2, each electric valve of the electric valve device 1 has a respective winding or solenoid 24 mounted on a spool 25. This spool is encapsulated inside a coating 26 and is surrounded by a member 27 made of magnetically conductive material which, in the embodiment shown, is shaped essentially in the form of a C.

    [0028] The assembly formed by the spool 25, the solenoid 24, the coating 26 and the element 27 is mounted on the tubular formation 5 of the associated electric valve A or B.

    [0029] The distal ends of the tubular formations 5 of these electric valves are then enclosed in a fluid-tight manner by a closing element such as a cover or plug 30 (Figures 1 to 3). These covers or plugs are made of non-magnetic material, in particular moulded plastic, and may be connected to the associated tubular formations 5 for example by means of heat welding or bonding.

    [0030] The distal ends of the tubular formations 5 extend through the corresponding assemblies 24-27 including the windings or solenoids 24 and the magnetic-flux conducting members 27 and protrude outside these assemblies 24-27.

    [0031] As can be understood in particular by viewing Figure 2, the plugs 30 conveniently help grip and keep firmly in position the corresponding assemblies comprising the windings 24, the spools 25 and the members 27 of the associated magnetic circuits.

    [0032] Conveniently, although not necessarily, the outlets 4 of the electric valves A and B may be provided with respective quick-fit couplings 31 for the connection of external outlet pipes (not shown).

    [0033] With reference to Figure 1, each of the electric valves A and B is provided with a respective electrical connector 32 for the connection of the respective winding to external driving circuits (not shown). The electric valves A and B can thus be selectively excited to open so as to allow a flow of liquid (water) from the tubular inlet conduit 3 towards the respective outlet 4.

    [0034] Obviously, without affecting the principle of the invention, the embodiments and the constructional details may be significantly varied with respect to that described and illustrated purely by way of a non-limiting example, without thereby departing from the scope of the invention as defined in the accompanying claims.


    Claims

    1. Electric valve device (1), comprising
    a hollow body (2, 6) with an inlet (3; 22) and an outlet (4) for a flow of a fluid, in particular a liquid, between which, inside said body (2, 6), there is defined a chamber (7) in which there is provided a valve seat (8) intended to cooperate with an associated closing member (10) so as to control communication between the inlet (3; 22) and the outlet (4); and
    a tubular guiding formation (5) which is nominally coaxial with the valve seat (8) and inside which there is mounted, axially displaceably to and from said seat (8), a core (9) which carries the closing member (10) and the position of which with respect to the seat (8) can be electromagnetically controlled by means of a winding or solenoid (24) arranged around said tubular formation (5);
    said body (2, 6) and the tubular guiding formation (5) being made as a single piece of moulded plastic; and
    wherein the distal end of said tubular formation (5), opposite the valve seat (8), is closed in a fluid-tight manner by an associated closing element (30) separate from and connected to said tubular formation (5), and said winding or solenoid (24) is surrounded at least in part by an associated magnetic flux conducting member (27), forming therewith an assembly (24-27) provided with a through-opening inside which said tubular formation (5) extends, and is axially locked on said body (2, 6) by means of said closing element (30);
    the electric valve device (1) being characterized in that the distal end of said tubular formation (5) extends through the whole assembly (24-27) including the winding or solenoid (24) and said magnetic-flux conducting member (27) and protrudes outside said assembly (24-27), and the associated closing element (30) is a plug or cover (30) made of non-magnetic material, in particular moulded plastic.
     
    2. Electrical valve device according to Claim 1 , wherein the valve seat (8) is made as a piece separate from said body (2) and is fixed inside said chamber (7), for instance by welding or gluing.
     
    3. Electric valve device according to one of the preceding claims, wherein said chamber (7) has substantially the same cross-section as the passage defined inside said tubular formation (5).
     
    4. Electric valve device according to Claim 1, wherein said magnetic flux conducting member (27) is shaped like a C or a U and has two facing branches through which said tubular formation (5) preferably passes.
     
    5. Electric valve device according to any one of the preceding claims, wherein a ferromagnetic member (11) acting as a fixed core cooperating with said movable core (9) is fixed in the distal portion of said tubular formation (5).
     
    6. Electric valve device according to Claim 4, wherein a spring (12) which tends to push the movable core (9) towards the valve seat (8) is arranged between the movable core (9) and the fixed core (11).
     
    7. Electric valve device according to any one of the preceding claims, wherein the outlet (4) for the fluid is provided in the body (2) and extends in a direction forming an angle with respect to the axis of said tubular formation (5).
     
    8. Electric valve device according to any one of Claims 1 to 5, wherein the outlet (4) for the fluid is provided in the body (2, 6) on the opposite side to the tubular formation (5) relative to the valve seat (8) and is preferably coaxial with said tubular formation (5) and said seat (8).
     
    9. Electric valve device according to Claim 7 or 8, wherein the outlet (4) is shaped as a cylindrical passage in which a quick-fit coupling (31) for the connection of an external outlet pipe is fixed.
     
    10. Electric valve device according to any one of the preceding claims, wherein a cylindrical inlet conduit (3) for the flow of the fluid, provided with a coupling, in particular a quick-fit coupling (13), for the connection of an external inlet pipe, is integrally formed in said body (2, 6), a flow-rate measuring device (14) of the kind comprising a bladed impeller (18) being mounted in said cylindrical conduit (3).
     
    11. Electric valve device according to Claim 10, wherein said flow-rate measuring device (14) is contained in an essentially cylindrical, cartridge-like, support casing (15) inserted in said inlet conduit (3) and having an external diameter which is close to that of the inlet coupling (13).
     
    12. Electric valve device according to Claim 10, wherein the flow-rate measuring device (14) comprises a permanent magnet (19) which is rotationally rigid with said impeller (18), and an associated detection winding (50), the axis of which forms an angle with respect to the axis of the impeller (18), for detecting the rotation of said magnet (19), a tube or sleeve (51) made of a ferromagnetic material being arranged around the detection winding (50).
     
    13. Electric valve device according to any one of the preceding claims, comprising a plurality of electric valves (A, B) substantially identical to each other, the valve bodies (6) of which are formed as a single body (2) and wherein a single cylindrical inlet conduit (3) is coupled to the valve chambers (7) of said electric valves (A, B) by means of an inlet manifold (23), said cylindrical inlet conduit (3) and said manifold (23) being made as one piece with the valve bodies (6) of said electric valves (A, B).
     


    Ansprüche

    1. Elektrische Ventilvorrichtung (1), umfassend
    einen hohlen Körper (2, 6) mit einem Einlass (3; 22) und einem Auslass (4) für einen Strom eines Fluids, insbesondere einer Flüssigkeit, wobei zwischen diesen innerhalb des Körpers (2, 6) eine Kammer (7) festgelegt ist, in der ein Ventilsitz (8) bereitgestellt ist, der mit einem dazugehörigen Verschlusselement (10) zusammenwirken soll, so dass die Verbindung zwischen dem Einlass (3; 22) und dem Auslass (4) gesteuert wird, und
    eine röhrenförmige Führungsanordnung (5), die nominal mit dem Ventilsitz (8) koaxial ist und innerhalb derer zu und von dem Sitz (8) axial verschiebbar ein Kern (9) montiert ist, der das Verschlusselement (10) trägt und dessen Position in Bezug auf den Sitz (8) mittels einer Wicklung oder einer Zylinderspule (24), die um die röhrenförmige Anordnung (5) angeordnet ist, elektromagnetisch gesteuert werden kann,
    wobei der Körper (2, 6) und die röhrenförmige Führungsanordnung (5) einstückig aus einem geformten Kunststoff hergestellt sind und
    wobei das distale Ende der röhrenförmigen Anordnung (5) gegenüber dem Ventilsitz (8) durch ein dazugehöriges Verschlusselement (30) getrennt von und verbunden mit der röhrenförmigen Anordnung (5) in einer fluiddichten Weise verschlossen ist, und wobei die Wicklung oder die Zylinderspule (24) zumindest teilweise durch ein dazugehöriges Magnet-flussleitungselement (27) umgeben ist und damit eine Anordnung (24 bis 27) bildet, die mit einer Durchgangsöffnung versehen ist, innerhalb derer sich die röhrenförmige Anordnung (5) erstreckt, und mittels des Verschlusselements (30) axial auf dem Körper (2, 6) verriegelt ist,
    wobei die elektrische Ventilvorrichtung (1) dadurch gekennzeichnet ist, dass sich das distale Ende der röhrenförmigen Anordnung (5) durch die gesamte Anordnung (24 bis 27), einschließlich die Wicklung oder die Zylinderspule (24) und das Magnetflussleitungselement (27), erstreckt und von der Anordnung (24 bis 27) nach außen vorragt, und das dazugehörige Verschlusselement (30) ein Stopfen oder eine Abdeckung (30) ist, der oder die aus einem nicht-magnetischen Material, insbesondere einem geformten Kunststoff, hergestellt ist.
     
    2. Elektrische Ventilvorrichtung nach Anspruch 1, bei welcher der Ventilsitz (8) als ein Teil getrennt von dem Körper (2) hergestellt ist und innerhalb der Kammer (7) z.B. durch Schweißen oder Kleben fixiert ist.
     
    3. Elektrische Ventilvorrichtung nach einem der vorhergehenden Ansprüche, bei der die Kammer (7) im Wesentlichen den gleichen Querschnitt wie der Durchgang aufweist, der innerhalb der röhrenförmigen Anordnung (5) festgelegt ist.
     
    4. Elektrische Ventilvorrichtung nach Anspruch 1, bei der das Magnetflussleitungselement (27) wie ein C oder ein U geformt ist und zwei aufeinander gerichtete Zweige aufweist, durch welche die röhrenförmige Anordnung (5) vorzugsweise hindurchtritt.
     
    5. Elektrische Ventilvorrichtung nach einem der vorhergehenden Ansprüche, bei der ein ferromagnetisches Element (11), das als ein feststehender Kern wirkt, der mit dem bewegbaren Kern (9) zusammenwirkt, in dem distalen Abschnitt der röhrenförmigen Anordnung (5) fixiert ist.
     
    6. Elektrische Ventilvorrichtung nach Anspruch 4, bei der eine Feder (12) zum Drücken des bewegbaren Kerns (9) in die Richtung des Ventilsitzes (8) zwischen dem bewegbaren Kern (9) und dem feststehenden Kern (11) angeordnet ist.
     
    7. Elektrische Ventilvorrichtung nach einem der vorhergehenden Ansprüche, bei welcher der Auslass (4) für das Fluid in dem Körper (2) bereitgestellt ist und sich in einer Richtung erstreckt, die einen Winkel in Bezug auf die Achse der röhrenförmigen Anordnung (5) bildet.
     
    8. Elektrische Ventilvorrichtung nach einem der Ansprüche 1 bis 5, bei welcher der Auslass (4) für das Fluid in dem Körper (2, 6) auf der Seite, die der röhrenförmigen Anordnung (5) gegenüber liegt, relativ zu dem Ventilsitz (8) bereitgestellt ist und vorzugsweise koaxial mit der röhrenförmigen Anordnung (5) und dem Sitz (8) ist.
     
    9. Elektrische Ventilvorrichtung nach Anspruch 7 oder 8, bei welcher der Auslass (4) als zylindrischer Durchgang geformt ist, in dem eine Quick-Fit-Kupplung (31) für den Anschluss eines externen Auslassrohrs fixiert ist.
     
    10. Elektrische Ventilvorrichtung nach einem der vorhergehenden Ansprüche, bei der eine zylindrische Einlassleitung (3) für den Strom des Fluids, die mit einer Kupplung, insbesondere einer Quick-Fit-Kupplung (13), für den Anschluss eines externen Einlassrohrs versehen ist, integriert in dem Körper (2, 6) ausgebildet ist, wobei eine Flussratenmessvorrichtung (14) der Art, die einen Flügelimpeller (18) umfasst, in der zylindrischen Leitung (3) montiert ist.
     
    11. Elektrische Ventilvorrichtung nach Anspruch 10, bei der die Flussratenmessvorrichtung (14) in einem im Wesentlichen zylindrischen, kartuschenartigen Trägergehäuse (15) enthalten ist, das in die Einlassleitung (3) eingesetzt ist und einen Außendurchmesser aufweist, der nahe an dem der Einlasskupplung (13) liegt.
     
    12. Elektrische Ventilvorrichtung nach Anspruch 10, bei der die Flussratenmessvorrichtung (14) einen Permanentmagneten (19), der rotationsmäßig starr mit dem Impeller (18) ist, und eine dazugehörige Erfassungswicklung (50), deren Achse einen Winkel in Bezug auf die Achse des Impellers (18) bildet, zum Erfassen der Rotation des Magneten (19) umfasst, wobei eine Röhre oder Hülse (51), die aus einem ferromagnetischen Material hergestellt ist, um die Erfassungswicklung (50) herum angeordnet ist.
     
    13. Elektrische Ventilvorrichtung nach einem der vorhergehenden Ansprüche, die eine Mehrzahl von elektrischen Ventilen (A, B) umfasst, die im Wesentlichen identisch miteinander sind, wobei deren Ventilkörper (6) als ein einzelner Körper (2) ausgebildet sind und wobei eine einzelne zylindrische Einlassleitung (3) mit den Ventilkammern (7) der elektrischen Ventile (A, B) mittels eines Einlassverteilers (23) gekoppelt ist, wobei die zylindrische Einlassleitung (3) und der Verteiler (23) einstückig mit den Ventilkörpern (6) der elektrischen Ventile (A, B) hergestellt sind.
     


    Revendications

    1. Dispositif d'électrovanne (1), comprenant
    un corps creux (2, 6) avec un orifice d'admission (3 ; 22) et un orifice de refoulement (4) pour un écoulement d'un fluide, en particulier un liquide, entre lesquels, à l'intérieur dudit corps (2, 6) est définie une chambre (7) dans laquelle est prévu un siège de vanne (8) destiné à coopérer avec un organe de fermeture associé (10) de façon à réguler une communication entre l'orifice d'admission (3 ; 22) et l'orifice de refoulement (4) ; et
    une formation de guidage tubulaire (5) qui est coaxiale nominalement avec le siège de vanne (8) et à l'intérieur de laquelle est monté, de façon déplaçable axialement vers et depuis ledit siège (8), un noyau (9) qui porte l'organe de fermeture (10) et dont la position par rapport au siège (8) peut être régulée électromagnétiquement au moyen d'un enroulement ou solénoïde (24) agencé autour de ladite formation tubulaire (5) ;
    ledit corps (2, 6) et la formation de guidage tubulaire (5) étant réalisés d'une seule pièce en plastique moulé ; et
    dans lequel l'extrémité distale de ladite formation tubulaire (5), opposée au siège de vanne (8), est fermée de manière étanche par un élément de fermeture associé (30) séparé de et raccordé à ladite formation tubulaire (5), et ledit enroulement ou solénoïde (24) est entouré au moins en partie par un organe conducteur de flux magnétique associé (27), formant conjointement un ensemble (24 à 27) pourvu d'une ouverture traversante à l'intérieur de laquelle s'étend ladite formation tubulaire (5), et est verrouillé axialement sur ledit corps (2, 6) au moyen dudit élément de fermeture (30) ;
    le dispositif d'électrovanne (1) étant caractérisé en ce que l'extrémité distale de ladite formation tubulaire (5) s'étend à travers la totalité de l'ensemble (24 à 27) y compris l'enroulement ou solénoïde (24) et ledit organe conducteur de flux magnétique (27) et dépasse à l'extérieur dudit ensemble (24 à 27), et l'élément de fermeture associé (30) est un bouchon ou couvercle (30) réalisé en matériau non magnétique, en particulier en plastique moulé.
     
    2. Dispositif d'électrovanne selon la revendication 1, dans lequel le siège de vanne (8) est réalisé en tant que pièce séparée dudit corps (2) et est fixé à l'intérieur de ladite chambre (7), par exemple par soudage ou collage.
     
    3. Dispositif d'électrovanne selon l'une des revendications précédentes, dans lequel ladite chambre (7) a sensiblement la même section que le passage défini à l'intérieur de ladite formation tubulaire (5).
     
    4. Dispositif d'électrovanne selon la revendication 1, dans lequel ledit organe conducteur de flux magnétique (27) est en forme de C ou de U et a deux branches en regard à travers lesquelles passe de préférence ladite formation tubulaire (5).
     
    5. Dispositif d'électrovanne selon l'une quelconque des revendications précédentes, dans lequel un organe ferromagnétique (11) servant de noyau fixe coopérant avec ledit noyau mobile (9) est fixe dans la portion distale de ladite formation tubulaire (5).
     
    6. Dispositif d'électrovanne selon la revendication 4, dans lequel un ressort (12) qui tend à pousser le noyau mobile (9) vers le siège de vanne (8) est agencé entre le noyau mobile (9) et le noyau fixe (11).
     
    7. Dispositif d'électrovanne selon l'une des revendications précédentes, dans lequel l'orifice de refoulement (4) pour le fluide est prévu dans le corps (2) et s'étend dans une direction formant un angle par rapport à l'axe de ladite formation tubulaire (5).
     
    8. Dispositif d'électrovanne selon l'une des revendications 1 à 5, dans lequel l'orifice de refoulement (4) pour le fluide est prévu dans le corps (2, 6) sur le côté opposé à la formation tubulaire (5) par rapport au siège de vanne (8) et est de préférence coaxial avec ladite formation tubulaire (5) et ledit siège (8).
     
    9. Dispositif d'électrovanne selon la revendication 7 ou 8, dans lequel l'orifice de refoulement (4) forme un passage cylindrique dans lequel un couplage rapide (31) pour le raccordement d'un tuyau de refoulement externe est fixe.
     
    10. Dispositif d'électrovanne selon l'une des revendications précédentes, dans lequel un conduit d'admission cylindrique (3) pour l'écoulement du fluide, pourvu d'un couplage, en particulier un couplage rapide (13), pour le raccordement d'un tuyau d'admission externe, est formé intégralement dans ledit corps (2, 6), un dispositif de mesure de débit (14) du type comprenant une roue à aubes (18) étant monté dans ledit conduit cylindrique (3).
     
    11. Dispositif d'électrovanne selon la revendication 10, dans lequel ledit dispositif de mesure de débit (14) est contenu dans un boîtier de support de type cartouche essentiellement cylindrique (15) inséré dans ledit conduit d'admission (3) et ayant un diamètre externe qui est proche de celui du couplage d'admission (13).
     
    12. Dispositif d'électrovanne selon la revendication 10, dans lequel le dispositif de mesure de débit (14) comprend un aimant permanent (19) qui est rigide en rotation avec ladite roue (18), et un enroulement de détection associé (50), dont l'axe forme un angle par rapport à l'axe de la roue (18), permettant de détecter la rotation dudit aimant (19), un tube ou manchon (51) réalisé en matériau ferromagnétique étant agencé autour de l'enroulement de détection (50).
     
    13. Dispositif d'électrovanne selon l'une des revendications précédentes, comprenant une pluralité d'électrovannes (A, B) sensiblement identiques les unes aux autres, dont les corps de vanne (6) sont formés en tant que corps unique (2) et dans lequel un seul conduit d'admission cylindrique (3) est couplé aux chambres de vanne (7) desdites électrovannes (A, B) au moyen d'un collecteur d'admission (23), ledit conduit d'admission cylindrique (3) et ledit collecteur (23) étant réalisés d'une seule pièce avec les corps de vanne (6) desdites électrovannes (A, B).
     




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    Cited references

    REFERENCES CITED IN THE DESCRIPTION



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    Patent documents cited in the description