WO2018229399A1

WO2018229399A1 - Multi-way valve having a conical gate

Info

Publication number: WO2018229399A1
Application number: PCT/FR2018/051329
Authority: WO
Inventors: Benoit Gresset; Sébastien ROBERT
Original assignee: Schrader
Priority date: 2017-06-14
Filing date: 2018-06-07
Publication date: 2018-12-20
Also published as: FR3067785B1; CN110741193A; FR3067785A1

Abstract

The multi-way valve (1) for a fluid circuit comprises a fluid inlet (A, B, C) and a fluid outlet (A, B, C), a casing (10, 11) comprising a receiving chamber (14) comprising a conical seat (16) where the fluid inlet and outlet emerge, a conical gate (30), comprising a fluid path (33), which is received in a complementary and sealed manner in the seat and is rotatable in the chamber about a longitudinal axis (X) of the gate between an open position, fluidically connecting the inlet and outlet, and a closed position, fluidically isolating the inlet and the outlet, and a device (15, 20) for driving the gate in rotation between the open and closed positions, the drive device comprising means (50) for setting the gate into movement in translation along the longitudinal direction, in the direction of detachment of the gate from the seat, the means for setting into movement in translation taking action before and conjointly with setting of the gate into rotation.

Description

MULTIVOIE VALVE WITH CONICAL BOISSEAU

The invention relates to a multi-channel valve for a fluidic circuit, particularly a heat transfer fluid circuit of a motor vehicle air-conditioning.

Currently, in the heat sink fluid circuits of reversible air-conditioning for a motor vehicle, for example, it is known to use two-way valves with ball valves. Some of these ball valves allow, in addition to their function of opening and closing circuit, to manage a fine fluid relaxation. Such valves are described in US 2014/0306137 or US 2014/0353536. However, ball technology is demanding in terms of machining the sphere. In addition, the arrangement of such valves is limited which leads to their multiplication within a reversible air conditioning that can have up to six valves of this type. The use of conical plug valves makes it possible to overcome these disadvantages in part. However, the conical plug valves have the disadvantage of having a torque resistant to relatively large rotational movement and have a very high risk of jamming in the absence of stops, itself requiring adjustment.

An object of the invention is to provide a multi-channel valve for a conical plug type fluidic circuit which does not have the above disadvantages.

To this end, according to the invention, there is provided a multi-channel valve for a fluidic circuit comprising at least one fluid inlet and at least one fluid outlet, a valve housing comprising a receiving chamber comprising a conical seat in which open the fluid inlet and outlet, a conical plug, comprising a fluidic path, received in a complementary manner and sealed in the conical seat and rotatable in the chamber about a longitudinal axis of the plug between open positions, putting the inlet and the outlet in fluid communication, and closed, fluidly isolating the inlet and the outlet, and a drive device for rotating the conical plug between the open and closed positions, and vice versa, the drive device including means for moving the conical plug in translation along the longitudinal axis, in the direction of detachment of the conical plug of the conical seat, the translational movement means intervening previously and jointly with a setting in rotational movement of the conical plug.

Thus, the fact of providing means for moving in translation along the longitudinal axis, makes it possible to detach the conical plug from its seat, which leads to a very small conical plug rotation torque and to avoid any jamming during this rotation.

Advantageously, but optionally, the multi-way valve according to the invention has at least one of the following additional features: the conical plug having a first driving face, the driving device comprises a second driving face extending in view of the first drive face, the translational motion means being positioned between the first and second drive faces;

the drive means comprise a cam and an associated cam follower;

the cam comprises a first series of conical holes made on at least one of the first and second drive faces; the cam follower is a series of balls, each ball being received in an associated conical hole;

the cam comprises a second series of conical holes made on the other of the first and second drive faces, opposite the first series of conical holes, each ball being received in an associated conical hole of the second series of conical holes ;

the multi-way valve comprises a return spring acting on the conical plug, against the translational movement means, in the direction of a recollement of the conical plug against the conical seat of the receiving chamber;

the driving device comprises a submerged geared motor integrated in a second chamber arranged in the valve housing;

the driving device comprises a magnetic coupler;

the multi-channel valve comprises an additional fluid inlet / outlet selectively or not in fluid communication with the inlet and / or the fluid outlet via the conical plug; and,

the at least one fluid inlet and the at least one fluid outlet forming a first valve stage, the multi-port valve comprises a second valve stage having at least one fluid inlet and at least one associated fluid outlet opening into the seat conical, selectively placed in fluid communication by the conical plug having a second associated fluid path, the second stage being offset from the first stage along the longitudinal axis. Other characteristics and advantages of the invention will appear in the following description of an embodiment of the invention. In the accompanying drawings:

FIG. 1 is a three-dimensional view of a first embodiment of a multi-way valve according to the invention;

- Figure 2 is a sectional view of the valve of Figure 1;

- Figure 3 is a sectional view of detail III of Figure 2;

- Figures 4a and 4b are schematic views illustrating the operation of the detail of Figure 3;

FIG. 5 is a three-dimensional view of a second embodiment of a multi-way valve according to the invention;

- Figure 6 is a sectional view of the valve of Figure 5;

- Figure 7 is a three-dimensional view of the valve and the drive device of the valve of Figures 5 and 6;

FIGS. 8a, 8b, 9a, 9b and 9c are schematic illustrations of selective fluidic communications achievable by the valve of FIGS. 5 to 7;

FIGS. 10a to 10d, 11a to 11c and 12a to 12b are diagrammatic illustrations of selective fluidic communications that can be achieved by the valve of FIGS. 1 to 2;

- Figures 13a and 13b are respectively a three-dimensional view and a sectional view of a two-stage conical plug for a multi-way valve according to the invention;

- Figure 14 is a sectional view of a three-way variant of the valve of Figures 5 and 6; and, - Figure 15 is a sectional view along XV-XV of the valve of Figure 14.

Referring to Figures 1 and 2, we will describe a first embodiment of a multi-channel valve 1 according to the invention. The multi-channel valve 1 according to the invention illustrated here is a three-way valve. It comprises a valve body comprising a housing 10 and a cover 11 fixed on the top (in the figures) of the housing 10. A seal 13 seals a receiving chamber 14 arranged within the housing 10 and is positioned between the cover 11 and the casing 10. Fastening elements 12 make it possible to fix the multi-channel valve 1 according to the invention on a frame. The receiving chamber 14 comprises a conical seat 16 in which open inlet / outlet ports B and C fluid. The input / output ports B and C are here in the same plane, that is to say that their axes are in the same plane. They thus form a first valve stage. An additional fluid inlet / outlet port A is provided in the cover 11 so as to open, here coaxially, into the receiving chamber 14 and, consequently, into the conical seat.

It should be noted that the multi-way valve 1 according to the invention operates bidirectionally necessary between the different input / output ports A, B and C as we will see later in the text: that is to say that each input / output ports A, B and C operate either as a fluid inlet or as a fluid outlet, depending on the configuration of the fluid circuit research in which the multi-port valve 1 according to the invention is integrated.

The multi-way valve 1 according to the invention further comprises a conical plug 30 received coaxially in the conical seat 16. The conical plug 30 has a conical lateral surface 36 which is complementary to a conical surface of the conical seat 16. Thus, when the conical bushel 30 is resting on the conical seat 16, a seal is formed between the two over the entire conical side surface 36, in particular around the orifices opening ports input / output B and C, here. The conical plug 30 has a longitudinal axis X and is rotatably mounted within the receiving chamber 14 about the longitudinal axis X. The conical plug 30 is rotatable between different operating positions for selectively putting in communication fluidic input / output ports A, B and C between them. In particular, among these operating positions, there is a closed position in which the conical plug fluidically isolates the input / output ports A, B and C from each other, as well as an open position in which the bushel conic 30 puts in fluid communication at least two of the input / output ports A, B and C via a fluid path 33. The fluid path 33 is arranged in the conical plug 30. Here illustrated, the fluid path 33 opens coaxially to the longitudinal axis X at a large base of the cone forming the conical plug 30, facing the additional input / output port A of the cover 11. The communication between the input / output ports may be partial and / or variable, if it is desired to perform a relaxation or regulate a flow, or total with a minimal pressure drop. Between the large base of the cone forming the conical plug 30 and the cover 11, the multi-way valve 1 according to the invention comprises a return spring 40. The return spring 40 is, here, coaxial with the longitudinal axis X. It comprises one end positioned within an internal counterbore 11A of the additional input / output port A and an opposite end received in a countersink of the fluidic path 33 of the conical plug 30 arranged at the large base of the cone forming the conical plug 30. A roles of this return spring is to ensure a support of the conical surface 36 of the conical plug 30 on the conical seat 16 of the receiving chamber 14, when the conical plug 30 is at rest in one of its operating positions.

In opposite manner, at a small base of the cone forming the conical plug 30, the latter comprises a blind bore 32 coaxial with the longitudinal axis X, for receiving mobile rotationally and translationally a shaft 24 of an element intermediate 20. The small base of the cone forming the conical plug 30 forms a first drive face 31. The shaft 24 extends projecting from a second drive face 21 located on the intermediate element 20. The second face drive 21 extends opposite and at a distance e from the first drive face 131. This is illustrated in FIGS. 3 and 4. The first drive face 31 comprises a first series of conical holes 33 which are distributed on the along a circumference of a circle whose center is on the longitudinal axis X. Similarly, the second driving face 21 comprises a second series of conical holes 23 which are distributed along a circumference of a circle whose the center is on the longitudinal axis X. The two series of conical holes23 and 33 are facing each other and each comprise the same number of conical holes, so that each pair of conical holes 23, 33 sandwiches a ball 50 of a series of balls 50, as illustrated in Figure 3. The assembly formed by the first 33 and second 23 sets of conical holes and the series of balls 50 forms means of implementation. translational movement of the conical plug 30 along the longitudinal axis X, in the direction of detachment of the conical plug 30 of the conical seat 16. The operation is explained in more detail later in this description.

The intermediate element 20 is part of a rotational movement drive device of the conical plug 30 between its different operating positions. The intermediate element is here a pinion having a toothing 22 on an outer lateral periphery. The drive device, here also comprises a worm 15 meshing with the toothing 22 of the intermediate element 20. Here the shaft of the worm 15 passes through a thickness of a wall of the housing 10. A seal dynamic is provided between the shaft of the worm 15 and the housing 10 to prevent leakage between the receiving chamber 14 and the outside of the multi-way valve 1 according to the invention at this level. We will now describe an operation of the multi-way valve 1 according to the invention. At rest, in one of these operating positions, the conical plug 30 has its conical lateral surface 36 bearing on the conical seat 16, under the action of the return spring 40. The intermediate element 20 and the conical plug 30 are in a configuration illustrated in Figures 2, 3 and 4a. The first 31 and second 21 driving faces are separated from one another by a distance "e", each ball 50 being held captive sandwiched between a pair of conical holes 23,33 associated. When the intermediate element 20 is rotated, each of the balls 50 abuts P2 and PI on the conical walls of the conical holes 23 and 33 respectively, PI and P2 being diametrically opposite with respect to the ball. These supports PI and P2 allow the transmission of forces between the intermediate element 20 and the conical plug 30:

A torque of rotation drive GT and a translation force T along the longitudinal axis X from the intermediate element to the conical plug,

- A couple of resistance ST and a return force R from the conical plug 30 to the intermediate element 20.

The translational force T is a resultant function of a slope of the conical wall of the conical hole 23 and the torque rotating drive G. The resistance torque ST is the result of the rotational friction of the conical surface 36 of the conical plug 30 on the conical seat 16. This resistance torque ST is also a function of the return force R applied by the return spring 40 on the conical plug 30 increased by:

the force resulting from the pressure affecting the two different diameters of the conical plug. For the record, because of the fluidic communication between the top and the bottom of the conical plug, the differential pressure on either side of the conical plug is always zero;

- the force required to take off the bushel from its conical seat.

Thus, at the beginning of the rotational movement, the rotational drive torque GT transmitted by the ball 50 of the support PI to the support P2 is smaller than the resistance torque ST, thus generating a translational force T which opposes to the return force R to be greater than the latter. Therefore a translational movement of the conical plug 30 along the longitudinal axis X occurs, moving the first 31 and second 21 driving faces from each other at a distance "E">"e". There is then a detachment of the conical surface 36 of the conical plug 30 of the conical seat 16. The difference between "E" and "e" is the separation stroke which is in practice very small. This is because the balls 50 roll on the conical walls of the pair of tapered holes 23,33. This has the consequence of reducing the rotational friction between the two, and thus reducing the resistant torque ST which becomes less than the rotational drive torque GT. Therefore, the configuration is that illustrated in Figure 4b and the intermediate element 20 rotates the conical plug 30 to a new operating position. Once this is reached, the torque of rotation drive GT becomes zero, under the effect of the return force R, the configuration of the conical plug and the intermediate element 20 resumes the rest configuration shown in FIG. 4a, the conical plug 30 making a helical movement with respect to the intermediate element 20, until the gluing (support) of the conical surface 36 on the conical seat 16.

It follows from the foregoing that the means for moving the conical plug 30 in translation along the longitudinal axis X in the direction of separation of the conical plug 30 from the conical seat 16 comprise a cam, here formed by the first 33 and second 23 sets of conical holes, and an associated cam follower, here formed by the series of balls. Other cam / follower cam variants can be used. For example, the balls 50 are replaced by protrusions integrally formed with and protruding from one of the first and second drive faces, the other of the first and second drive faces having a series of holes. conical. In another example, the drive faces each comprise a series of complementary prisms whose edges are radial.

With reference to FIGS. 10a to 12e, we will briefly describe various configurations of the fluidic path 33 and conical plug operating positions 30.

In FIG. 11a, the conical plug 30 is in an open position between the input / output ports A and B and isolates the input / output C from the other two. The fluid path 33 'then provides two-way fluid communication between the input / output ports A and B. In FIG. 11b, the conical plug 30 is in an open position between the input / output ports A and C and isolates the input / output B of the two others. The fluid path 33 'then provides two-way fluid communication between the input / output ports A and C.

In FIG. 11c, the conical plug 30 is in the closed position, the input / output ports A, B and C being fluidly isolated from each other.

With reference to FIG. 10, the fluidic path 33 differs from the fluidic path 33 'by the presence of a groove with a progressive section 330 whose section is reduced as we move angularly away from one side of the main road path Figs. 10a to 10c are similar operating positions to those described in Figs. 11a to 11c respectively. A fourth operating position is illustrated in FIG. 10d: the conical plug 30 is in an open expansion position between the input / output ports A and B while isolating the input / output C from the other two. The fluidic path 33 then provides bidirectional fluidic communication between the input / output ports A and B and a fine expansion via the progressive section groove 330. Such a configuration makes it possible in particular to dispense with an independent regulator in a circuit air conditioning or refrigeration.

With reference to FIG. 12, the fluidic path 33 "differs from the fluidic path 33 by the presence of a second progressive section groove 331 symmetrical with the first progressive section groove 330. FIGS. 12a to 10d represent operating positions 10a to 10d respectively A fifth operating position is illustrated in FIG 12e: the conical plug 30 is in an open position expansion between the input / output ports A and C while isolating the input / output B of the other two. The fluid path 33 "then provides two-way fluid communication between the input / output ports A and C and a fine expansion via the progressive depth groove 331.

With reference to FIGS. 5 to 7, we will describe a second embodiment of a multi-channel valve 100 according to the invention.

In this embodiment of the multi-way valve 100 according to the invention, the similar elements are numbered in the same way with an increment of 100 relative to the previous embodiment. We will mainly describe the differences between the two embodiments.

The multi-way valve 100 according to the invention comprises a valve body comprising a housing 110, a first cover 111 and a second cover 117. The housing 110 comprises a receiving chamber 114 comprising a conical seat 116 into which an inlet / outlet port opens A fluid, on the one hand, and on the other hand, a port inlet / outlet B fluid. The input / output ports A and B are here in the same plane, that is to say that their axes are in the same plane. They thus form a first valve stage. The receiving chamber is closed by the second cover 117, a seal 113 being interposed between the second cover 117 and the housing 110. Fixing means 112 of the multi-way valve 100 according to the invention on a frame are provided.

It should be noted that the multi-way valve 100 according to the invention operates bidirectionally necessary between the different input / output ports A and B as we will see later in the text: that is to say that each of the ports A / B input / output functions either as a fluid inlet or as a fluid outlet, depending on the configuration of the research of the fluidic circuit in which the multichannel valve 100 according to the invention is integrated.

As for the previous embodiment, the multi-way valve 100 according to the invention further comprises a conical plug 130 received coaxially in the conical seat 116. The conical plug 130 has a conical lateral surface 136 which is complementary to a conical surface of the conical seat 116. The conical plug 130 has a longitudinal axis X and is rotatably mounted within the receiving chamber 114 about the longitudinal axis X. The conical plug 130 is rotatable between different operating positions allowing selectively fluidic communication input / output ports A and B between them. In particular, among these operating positions, there is a closed position in which the conical plug 130 fluidly isolates the input / output ports A and B from each other, as well as an open position in which the conical plug 130 fluidly communicates the two input / output ports A and B via a fluid path 133. The fluid path 133 is arranged in the conical plug 130.

Between a large base of the cone forming the conical plug 130 and the second cover 117, the multi-way valve 100 according to the invention comprises the return spring 40. The return spring 40 is, here, coaxial with the longitudinal axis X. comprises an end positioned within a blind hole of the second cover 117 and an opposite end received in a blind hole of the conical plug 130 arranged at the large base of the cone forming the conical plug 130. This second end of the return spring 40 presses on the bottom of the blind hole through a pellet 41 having a curved surface 42 which bears directly against the blind hole bottom. This makes it possible to reduce the friction between the return spring 40 and the conical plug 130 during a rotational movement of the latter between two operating positions.

Oppositely, at a small base of the cone forming the conical plug 130, the latter has a bore 132 coaxial with the longitudinal axis X. This bore continues here with a duct parallel to the longitudinal axis X which opens out at the large base of the cone forming the conical plug 130. This makes it possible to balance the pressures in the receiving chamber 114 on either side of the conical plug 130. The small base of the cone forming the conical plug 30 forms a first drive face 131 equivalent to the first drive face 31 of the previous embodiment. The multi-way valve 100 according to the invention comprises a drive device in rotational movement of the conical plug 30 between its different operating positions. It comprises an intermediate element 120 which is here a pinion having a toothing 122 on an outer lateral periphery. The intermediate element 120 comprises a shaft 124 rotatably received in a bore formed in an intermediate wall of the casing 110. The intermediate element 130 comprises a second drive face 121 similar to the second driving face 21 of the operating mode. previous realization. This second drive face 121 extends opposite and at a distance from the first drive face 131. Interposed between these two drive faces, the multi-way valve 100 according to the invention comprises means for moving in translation movement. of the conical plug 130 along the longitudinal axis X, in the direction of a detachment of the conical plug 130 of the conical seat 116. These means for moving the conical plug 130 in translation along the longitudinal axis X, in the direction the conical plug 130 of the tapered seat 116 is separated from the tapered valve 30 by the translational movement means along the longitudinal axis X, in the direction of detachment of the conical plug 30 from the conical seat 16 of the previous embodiment, their role and operation being the same. They will not be rewritten here.

The drive device here also comprises a gear unit 103 rotating the intermediate element 120 by meshing an output gear 115 with the toothing 122 of the intermediate element 120. The drive device also comprises, here, a motor 102 of brushless type ("brushless" in the English terminology) input gear reducer 103. The motor 102 and gear reducer 103 are received in a second chamber 104 arranged in the housing 110, above, in Figure 6, the receiving chamber 114 from which it is separated by the intermediate wall of the housing. The second chamber 104 is closed by the first cover 111. The latter comprises a passage 110 for the supply of the motor 102. Such an arrangement makes it possible to avoid having a drive shaft of the intermediate element 120 which leaves the valve body 110 of the multi-way valve 100 according to the invention and to provide, therefore, a dynamic seal that introduces additional risks of harmful leakage in the context of a closed circuit.

In an alternative embodiment, the motor 102 or the motor 102 / gearbox 103 may be replaced by a magnetic coupler. This avoids the arrangement of the passage 110 for feeding into the first cover 111, which further reduces the risk of leakage. With reference to FIGS. 8a to 9c, we will briefly describe various configurations of the fluidic path 133 and conical plug operating positions 130.

In FIG. 8a, the conical plug 130 is in an open position between the input / output ports A and B. The fluid path 133 then provides two-way fluid communication between the input / output ports A and B.

In FIG. 8b, the conical plug 130 is in the closed position, the input / output ports A and B being fluidly isolated from one another.

With reference to FIG. 9, the fluid path 133 'differs from the fluidic path 133 by the presence of a progressive depth groove 1330 whose depth is reduced as we move angularly away from one side of the main road path fluidic 133 '. Figures 9a to 9b are similar operating positions to those described in Figures 8a to 8b respectively. A third operating position is illustrated in FIG. 9c: the conical plug 130 is in an open expansion position between the input / output ports A and B. The fluid path 133 'then provides bidirectional fluidic communication between the input / output ports A and B and a fine expansion via the progressive section groove 1330. Such a configuration makes it possible to dispense with an independent expander in an air conditioning or refrigeration circuit.

It should be noted that the two-way configuration of the second embodiment of the multi-way valve 100 according to the invention is adaptable to the multi-way valve 1 according to the invention of the first embodiment. Conversely, the three-way configuration of the first embodiment of the multi-way valve 1 according to the invention is adaptable to the multi-channel valve 100 according to the invention of the second embodiment. This last configuration of a multi-way valve 200 according to the invention is illustrated in FIGS. 14 and 15 which we will briefly describe while considering only the differences. The second cover 217 closing the receiving chamber 114 includes the additional fluid inlet / outlet port A so that the latter opens, here coaxially, into the receiving chamber 114. The conical plug 230 comprises a fluid path 233 similar to that 33 of the conical plug 30 of the first embodiment of the multi-way valve 1 according to the invention. The arrangement of the return spring 40 and the pellet 41 resumes that of the second embodiment of the multi-way valve 100 according to the invention. The intermediate element 220 differs from the intermediate element 120 of the second embodiment in that it comprises a groove 202 in a semicircle, here coaxial with the shaft 124 slidably receiving a pin 201 which is fixed in the intermediate wall of the housing 210. This groove 202 opens on an upper surface (in FIG. 14) of the intermediate element 220 and surrounds the shaft 124. The cooperation of the groove 202 and the pin 201 makes it possible to limit the amplitude of the rotational movement of the intermediate element 220 and to index, in addition, the drive device of the conical plug 230.

It should be noted that the groove 202 and the pin 201 can be integrated in the previous embodiments of the multi-way valve 1, 100 according to the invention.

On the other hand, although embodiments of the multi-channel valve 1,100,200 according to the invention have been described with two or three input / output ports, it is possible to provide four or more input / output ports forming the valve stage of the multi-way valve according to the invention. In another variant embodiment illustrated in FIGS. 13a and 13b, the conical plug 300 comprises a second valve stage EtB having a specific configuration of fluid inlet / outlet ports associated with a fluid path 333B. This second valve stage EtB is separated along the longitudinal axis X of the first valve stage EtA (having a specific configuration of fluid inlet / outlet ports associated with a fluid path 333A) on the conical plug 300 and fluidically isolated from the it when the conical plug 300 is at rest in an operating position. This is made possible by the use of a conical plug 300 whose height, and that of the conical seat with which it cooperates, is adapted to the configuration. Thus, similarly, it is possible to similarly arrange a third or more valve stage. This reduces the number of valves in a fluid circuit having a finite number of operating configurations. For example, in the context of a reversible air conditioning operating either as a heat pump or simple conventional air conditioning, it is possible to go from six traditional valves of the state of the art to three or even two multi-way valves according to the invention. invention having a plurality of valve stages. This makes it possible to ensure independent and synchronized functionalities on the same multi-channel valve according to the invention.

The use of a multi-way valve according to the invention allows to take advantage of the conical cooperation between the conical plug and the conical seat while overcoming the problem of jamming, while having a freedom of configuration according to the needs of the fluidic circuit to equip. It should be noted in addition that the internal sealing between the different fluid inlet / outlet ports is very good level due to a cone-cone cooperation with an angle that can be low. The use of a small angle is made possible by the detachment, itself made possible by the translational movement means of the conical plug along the longitudinal axis, in the direction of detachment of the conical plug of the seat taper, and this before the effective rotation of the conical plug to move from one operating position to another.

Of course, it is possible to make numerous modifications to the invention without departing from the scope thereof.

Claims

claims

1. Multi-channel valve (1; 100; 200) for a fluid circuit comprising at least one fluid inlet (A, B, C) and at least one fluid outlet (A, B, C), a valve housing (10) , 11; 110, 111, 117; 210, 217) comprising a receiving chamber (14; 114) comprising a conical seat (16; 116) into which fluid inlet and outlet, a conical plug (30; 130; 230; 300), comprising a fluid path (33, 33 ', 33 "; 133, 133'; 233; 333A, 333B), complementarily and sealingly received in the conical seat and rotatable in the chamber around a longitudinal axis (X) of the plug between open positions, putting the inlet and the outlet in fluid communication, and closed, fluidly isolating the inlet and the outlet, and a driving device (15, 20; , 115, 120, 220) in rotational movement of the conical plug between the open and closed positions, and vice versa, characterized in that the input device nement comprises means for setting in translation movement (23,33,50) of the conical plug along the longitudinal axis, in the direction of a detachment of the conical plug of the conical seat, the means for setting in motion of translation intervening previously and in conjunction with a rotational movement of the conical plug.

2. Multi-channel valve according to claim 1, characterized in that, the conical plug having a first driving face (31; 131), the driving device comprises a second driving face (21; 121) extending facing the first drive face, the translational movement means being positioned between the first and second drive faces.

3. multi-channel valve according to claim 1 or 2, characterized in that the drive means comprise a cam (23, 33) and a follower cam (50) associated.

4. multi-channel valve according to claims 2 and 3, characterized in that the cam comprises a first series of conical holes (33) formed on at least one (31) of the first and second drive faces.

5. multi-channel valve according to claim 4, characterized in that the cam follower is a series of balls (50), each ball being received in a conical hole (33) associated.

6. multi-channel valve according to claim 5, characterized in that the cam comprises a second series of conical holes (23) formed on the other (21) of the first and second drive faces, opposite the first series of conical holes, each ball being received in an associated conical hole of the second series of tapered holes.

7. multi-channel valve according to one of claims 1 to 6, characterized in that it comprises a return spring

(40) acting on the conical plug, against the translational movement means, in the direction of a recollement of the conical plug against the conical seat of the receiving chamber.

8. multi-channel valve according to one of claims 1 to 7, characterized in that the drive device comprises a geared motor (102,103) immersed in a second chamber (104) arranged in the valve housing.

9. multi-channel valve according to one of claims 1 to 7, characterized in that the drive device comprises a magnetic coupler.

Multi-channel valve according to one of claims 1 to

9, characterized in that it comprises an additional fluid inlet / outlet (A, B, C) selectively or not in fluid communication with the inlet and / or the fluid outlet, via the conical plug.

11. Multi-channel valve according to one of claims 1 to

10, characterized in that, the at least one fluid inlet and the at least one fluid outlet forming a first valve stage (EtA), the multi-port valve comprises a second valve stage (EtB) comprising at least one inlet of fluid and at least one associated fluid outlet opening into the conical seat, selectively put into fluid communication by the conical plug (300) having a second associated fluid path (333B), the second stage being offset from the first stage according to the longitudinal axis.