FLUID DISTRIBUTION SYSTEM

Abstract

Fluid distribution system, said distribution system being intended to make at least some of the branches of a fluid circuit communicate with each other according to different configurations of said system, said distribution system comprising a distributor member (10), said distributor member being intended to be movable in rotation about a longitudinal axis in order to selectively serve said branches to be made to communicate with each other according to angular positions of said distributor member, said distributor member comprising a body (12) defining a plurality of chambers (24, 25) for circulation of said fluid, said body comprising one or more guide shapes (28a, 28b, 29) for guiding said fluid in said chambers, the guide shape(s) having an axial recess (32a, 32b, 32c). Figure for abstract: Figure 2

Description

Title of the invention: SYSTEM OF DISTRIBUTION OF A FLUID Technical field of the invention

[0001] The invention relates to a system for distributing a fluid, in particular a heat transfer liquid. This distribution system will find its application, for example, in the field of motor vehicles. Technical background

[0002] Fluid circuits are known which allow thermal conditioning of different parts or zones of a motor vehicle, in particular its passenger compartment. With the proliferation of hybrid or electric type engines, these circuits have numerous branches in order to be able to meet the thermal management needs of the vehicle in various operating modes.

[0003] To circulate the fluid in their different branches, such circuits include a large number of valves connecting the branches together according to different configurations depending on the desired operating mode. Such a number of valves increases the pressure losses. They also make the control of the circulation of the fluid more complex and increase the cost of these circuits.

[0004] Rotary valves have also been proposed that allow numerous inlets / outlets to be connected in order to offer more possibilities for fluid circulation between the branches of the circuits compared to standard two-, three- or four-way valves. However, these valves have a large footprint which limits their use. In addition, the torques required to operate them can be high. Summary of the invention

[0005] The present invention aims to at least partially overcome the drawbacks stated above and to this end proposes a system for distributing a fluid, the distribution system being intended to make at least some of the branches of a fluid circuit communicate with each other according to different configurations of the system, the distribution system comprising a distributor member, the distributor member being intended to be movable in rotation about a longitudinal axis in order to selectively serve the branches to be made to communicate with each other according to angular positions of the distributor member, the distributor member comprising a body defining a plurality of fluid circulation chambers, the body comprising one or more shapes for guiding the fluid in the chambers, the guide shape or shapes having an axial recess.

[0006] Thanks to such a configuration, a reduction in the mass of the distributor member is ensured, which makes it possible to reduce the torque required for the rotational actuation of the distributor member.

[0007] The distribution system according to the invention may comprise one or more of the following characteristics, taken in isolation from one another or in combination with one another: - the body has a first plate and / or a second rotating guide plate; - the guide shapes are defined at least in part by branches, these branches being connected to each other at a central part of the distributor member to define at least in part the chambers; - the body comprises a central block defining at least in part the chambers; - the central block includes the branches; - the axial recess of the guide shapes extends from the first plate towards the second plate; - the branches are hollow so that the axial recess is internal to the branches; - the internal recess of the branches extends from the first plate to the second plate; - the internal recess of the branches is a blind recess, open on the first plate or the second plate; - the guide shapes are defined by guides; - each of the guides has an axial recess which is radially open; - the guides are placed angularly between the first and second branches, in the vicinity of a lateral edge of the distributor member; - the branches extend substantially radially from the central part; - the first and second plates are parallel to each other and / or perpendicular to the axis of rotation; - the central block is between the first and second plateau; - the branches have walls extending along the longitudinal axis from the first plate towards the second plate; - the walls of the branches have a thickness that is substantially identical at all points of the branches; - the guides have a thickness that is substantially identical at all points of the guides; the guide shape(s) have a distal edge intended to be in contact in a substantially linear manner with a seal of the distribution system; each distal edge has at least one first chamfer and at least one second chamfer such that the first chamfer and the second chamfer together define a rib; the rib has a rounded shape; the rib extends along the longitudinal axis from the first plate towards the second plate; each of the branches is provided with at least one of the distal edges; the distal edges of the branches are opposite the central part; the guides are placed angularly between the first and second branches, in the vicinity of a lateral edge of the distributor member; each of the guides is provided with two of the distal edges, provided angularly opposite; the first and second trays have rounded peripheral edges; one or more of the chambers, called first chambers, are defined by one of the first branches and one of the second branches, together with at least one of the guides; one of the chambers, called the second chamber, is defined between the first branches; the branches have walls extending along the longitudinal axis from the first plate towards the second plate; the walls of the branches are substantially flat; the walls of the first branches defining the second chamber are substantially parallel to each other; the distribution system comprises a housing defining a housing for the distribution member, the seal is located between the distributor member and an internal face of a side wall of the housing; the seal comprises a first part, called annular, in the form of a ring or an angular sector of a ring located at the level of the first plate of the distributor member and / or a second part, called annular, in the form of a ring or an angular sector of a ring located at the level of the second plate of the distributor member; the distribution system has a single distribution stage; the housing is provided with a plurality of input and / or output channels, called peripherals, distributed over angular sectors on a circumference of the housing; the peripheral inlet and / or outlet channels open laterally, in particular radially, into the housing through openings; the housing of the casing has a second height and the openings of the inlet and / or outlet channels each have a third height, such that the first height of the distributor member is less than the second height of the housing and greater than the third height of the openings; the openings of the peripheral input and / or output channels of a first group of peripheral input and / or output channels have a first width and the openings of the peripheral input and / or output channels of a second group of peripheral input and / or output channels have a second width, the first width being greater than the second width; at least one of the angular sectors has a dimension smaller than the other angular sectors; the box has at least five peripheral input and / or output channels; at least three channels of the plurality of peripheral input and / or output channels belong to the first group, each channel of this first group occupying a first angular sector; at least two channels of the plurality of peripheral input and / or output channels belong to the second group, each channel of this second group occupying a second angular sector; the second angular sector has a dimension smaller than the dimension of the first angular sector; one or more of the first chambers open radially so that at least some of the angular positions of the body determine a passage of the fluid between the different peripheral inlet and / or outlet channels of the distribution system, through the or at least one of the first chambers; the distributor member, in particular the central block, has a fluid distribution channel, extending axially along the longitudinal axis, and a second chamber communicating with this distribution channel, the second chamber opening radially, so that at least some of the angular positions of the body determine a passage of the fluid between an inlet and / or outlet channel, called axial, and at least one of the inlet channels and / or peripheral outlets of the distribution system, through the second chamber and the distribution channel; the first angular sector is substantially equal to at least 72 degrees; the second angular sector is substantially equal to at most 36 degrees; there are six peripheral input and / or output channels; the peripheral input and / or output channels of the first group are angularly spaced regularly; the first and second plates are parallel to each other and / or perpendicular to the axis of rotation; the first and second trays are located on either side of the first chambers along the longitudinal axis; the distributor organ has a plane of symmetry; each first chamber has an angular amplitude between 120 and 150 degrees; the distribution channel is centered on the longitudinal axis; the first and / or second chambers extend angularly around the longitudinal axis; the distribution channel communicates with the second chamber over all or part of a height of the chamber, this height extending along the longitudinal axis; the first rooms are two in number; the distributor member is configured to rotate less than 360 degrees, or even less than 300 degrees; the distributor member is configured so that a passage section between one of the chambers and one of said peripheral inlet and / or outlet channels of the first group and a passage section between the same of the chambers and one of the peripheral inlet and / or outlet channels of the second group is substantially identical in at least one of the angular positions; the distribution system is configured so that a rotation of the distributor member allowing the circulation of the fluid between one of the peripheral inlet and / or outlet channels of the second group and one of the peripheral inlet and / or outlet channels of the first group by blocking the circulation between the other of the peripheral inlet and / or outlet channels of the second group and the same of the peripheral inlet and / or outlet channels of the first group leaves open the circulation between the other peripheral inlet and / or outlet channels of the first group; - the distribution system has a plurality of fluid distribution orifices, these distribution orifices being respectively intended to be connected to the branches of the fluid circuit; - the inlet and / or outlet channels open respectively onto the distribution orifices; - the housing has fixing platforms distributed around a circumference of the housing; - the platforms have through fixing holes; - the platforms have recesses. Brief description of the figures

[0008] Other characteristics and advantages of the invention will appear during the reading of the detailed description which follows for the understanding of which reference will be made to the appended drawings in which:

[0009] [Fig-1] illustrates schematically in perspective according to a section plane transverse an example of a fluid distribution system according to the invention,

[0010] [Fig.2] schematically illustrates in perspective a distributor member of the distribution system of [Fig.l],

[0011] [Fig.3] schematically illustrates in perspective along a transverse sectional plane the distributor member of [Fig.4],

[0012] [Fig.4] schematically illustrates along an axial section plane the housing of the distribution system of [Fig.l],

[0013] [Fig.5] shows [Fig.l] in top view,

[0014] [Fig.6] schematically illustrates along a transverse sectional plane a first distribution position of the distributor member of [Fig.2] in the distribution system of [Fig.l],

[0015] [Fig.7] schematically illustrates along a cross-sectional plane a second distribution position of the distributor member of [Fig.2] in the distribution system of [Fig.l],

[0016] [Fig.8] schematically illustrates along a transverse sectional plane a third distribution position of the distributor member of [Fig.2] in the distribution system of [Fig.l],

[0017] [Fig.9] schematically illustrates along a cross-sectional plane a fourth distribution position of the distributor member of [Fig.2] in the distribution system of [Fig.l],

[0018] [Fig. 10] schematically illustrates along a transverse sectional plane a fifth distribution position of the distributor member of [Fig.2] in the distribution system of [Fig.l].

[0019] In these figures, the same reference corresponds to identical or similar elements. Detailed description of the invention

[0020] With reference to Figures 1 to 4, the invention relates to a distribution system 100 for a fluid. This distribution system 100 is intended to make at least some of the branches of a fluid circuit communicate with each other according to different configurations of the system. The distribution system may have a plurality of fluid distribution orifices, not illustrated. These distribution orifices are intended to be respectively connected to the branches of the circuit.

[0021] The distribution system 100 comprises a distributor member 10 which is intended to be movable in rotation around a longitudinal axis X in order to selectively serve the branches to be communicated with each other as a function of angular positions of the distributor member 10.

[0022] The distributor member 10 further comprises a body 12 defining a plurality of chambers 24, 25 for circulating the fluid. The body 12 comprises one or more guide shapes 28a, 28b, 29 for guiding the fluid into the chambers 24, 25. These guide shapes 28a, 28b, 29 also have an axial recess 32a, 32b, 32c.

[0023] Each of the guide shapes 28a, 28b, 29 advantageously has a distal edge 34 intended to be in contact in a substantially linear manner with a seal of the system.

[0024] With reference to figures 2 and 3 which represent the distributor member 10 according to the invention, the body 12 of the distributor member may optionally comprise a first plate 14 and / or a second rotational guide plate 16, advantageously parallel to each other and / or perpendicular to the longitudinal axis X, connected by the body 12. The body 12 has a lateral edge 18 defined in the present example at the level of a fictitious cylinder connecting peripheral edges 20 of the plates 14, 16. The distal edge(s) 34 are located at the level of said fictitious cylinder.

[0025] The axial recess 32a, 32b, 32c of the guide shapes 28a, 28b, 29 advantageously extends from the first plate 14 in the direction of the second plate 16, along the longitudinal axis X.

[0026] Each distal edge 34 may comprise at least one first chamfer 35a and at least one second chamfer 35b, such that the first chamfer 35a and the second chamfer 35b together define a rib 36. In use, this rib 36 locally compresses the seal of the distribution system 100.

[0027] The first and second chamfers 35a, 35b also have the advantage of preventing the distributor member 10 from blocking during rotation. Indeed, during rotation of the distributor member, the distal edges 34 of the guide shapes must pass openings, possibly rectangular, in the seal corresponding to the openings 111, 112 of the peripheral inlet and / or outlet channels HOa-llOf. Without these chamfers 35a, 35b, the distributor member 10 would risk blocking an edge of the seal and / or creating hard points during rotation.

[0028] This rib 36 may have a rounded shape. This has the advantage of not damaging the seal when the rib 36 rubs against it, because the rib 36 does not have a sharp edge. In this way, the service life of the seal can be improved, which ensures better sealing.

[0029] The rib 36 can extend along the longitudinal axis X from the first plate 14 towards the second plate 16 by connecting their peripheral edges 20.

[0030] Advantageously, the peripheral edges 20 of each plate are rounded. This has the same advantages as for the rounded rib(s) 36.

[0031] The body 12 of the distributor member 10 has an external diameter 0r and a first height Hr. Advantageously, the ratio of the external diameter 0r to the first height Hr defines a parameter R. This parameter R is between 0.6 and 2.7.

[0032] This parameter R represents the optimal values ​​obtained to have a distribution system 100 with limited pressure losses and control of the friction generated by the distributor member 10, while having reduced compactness of the distribution system 100.

[0033] It is understood that having an external diameter 0r that is high relative to the first height 0r will tend to increase friction, whereas a first height Hr that is high relative to the external diameter 0r will tend to increase pressure losses, in particular if the passage of the fluid towards the distributor member 10 has a shape similar to simple slots.

[0034] If the external diameter 0r is too small, at constant passage section, the widths of the fluid inlet / outlet passage will be very small, which is not desirable for pressure losses even if the first height Hr increases.

[0035] If the external diameter 0r is suitable and compact to place the fluid inlet / outlet passages, the first height Hr will be defined by the need for the passage section. Even if a high height Hr can improve the pressure losses, it is however not desirable because the distributor system 100 will be less compact, which implies more material and therefore an additional cost, and the torque will be increased due to a high contact surface, involving more friction.

[0036] It will also be noted that with a constant cross-section of the inlet / outlet passages, a high first height Hr implies a narrow passage and will tend to promote deformation of the seal, described later.

[0037] The distribution system 100 may also comprise a housing 102 defining a housing 104 for the dispensing member 10. It is understood that the housing 104 has a diameter substantially identical to the diameter of the dispensing member 10, with a clearance necessary for the rotation of the dispensing member 10 in the housing 104. The lateral edge 18 of the body 12 is located opposite and in the immediate vicinity, with the clearance, of an internal face of a lateral wall 106 of the housing 102.

[0038] It is understood that the first and second plates 14, 16, when present, have a diameter substantially identical to the external diameter 0r of the distributor member 10 and are configured to participate in guiding it in rotation in the housing 104 of the housing 102. It is in particular they which, with the distal edges 34, are capable of generating the friction that the invention proposes to limit. The value Hr involved in the calculation of the parameter R takes into account or not the thickness of the plates 14, 16. It is measured, for example, between a median plane of the first plate 14 and a median plane of the second plate 16.

[0039] The dispensing member 10 may have a plane of symmetry. The dispensing member 10 may be configured to rotate in a clockwise and / or counterclockwise direction. The dispensing member 10 may, thus, be configured to rotate less than 360 degrees, or even less than 300 degrees, or even less than 240 degrees.

[0040] With reference to [Fig. 3], the body 12 of the distributor member 10 may have a central block 12' defining at least in part the chambers 24, 25. This central block 12' may be comprised between the first plate 14 and the second plate 16. The body 12, and in particular this central block 12', may comprise branches 28a, 28b connected together at a central part 26 of the distributor member 10 to define at least in part the chambers 24, 25. These branches 28a, 28b advantageously extend substantially radially from the central part 26 to the lateral edge 18.

[0041] Advantageously, the branches 28a, 28b at least partly define the guide shapes. Each of the branches 28a, 28b is provided with at least one of the distal edges 34, here two of the distal edges 34, provided at two opposite angular ends of the branches 28a, 28b. As will be understood, the distal edges 34 of the branches 28a, 28b are radially opposite the central portion 26.

[0042] Advantageously, the branches 28a, 28b are hollow so that the axial recess 32a, 32b is internal to the branches 28a, 28b. This means that each internal recess 32a, 32b of the branches 28a, 28b has a closed contour so that the fluid cannot penetrate inside the recess in question. In particular, the internal recesses 32a, 32b of the branches 28a, 28b may be formed by angular sectors and bordered by an internal edge, for example the central part 26, an external edge and two radial edges. For example, the walls 30a, 30b, 30c, connect the internal and external edges. The external edge here extends between two of said distal edges 34 of the same branches.

[0043] The internal recess 32a, 32b of the branches 28a, 28b may extend from the first plate 14 to the second plate 16, along the longitudinal axis X. This internal recess 32a, 32b may be a blind recess, i.e. open on only one side. This allows the distributor member 10 to retain a certain rigidity. In particular, the internal recess 32a, 32b may be open on the first plate 14 or the second plate 16, as more particularly visible in [Fig. 1]. This facilitates the molding of the distributor member 10.

[0044] The guide shapes can also be defined by guides 29. These guides 29 are advantageously placed angularly between first and second branches 28a, 28b, in the vicinity of the lateral edge 18 of the distributor member 10. Advantageously, each of the guides 29 is provided with two of the distal edges 34 angularly opposite.

[0045] Advantageously, each of the guides 29 has an axial recess 32c which is radially open. In other words, the axial recess, in the configuration of the distribution system 100, is open on the housing 104 of the casing 102, described later. This makes it possible to limit the contact surface with the seal, and thus to reduce the necessary actuating torque.

[0046] One or more of the chambers, called first chambers 24, are defined by one of the first branches 28a and one of the second branches 28b, together with at least one of the guides 29 placed angularly between the two branches 28a, 28b in question. One of the chambers, called second chamber 25, is defined between the first branches 28a. The branches 28a, 28b delimiting the chambers 24, 25 advantageously comprise internal walls 30a and external walls 30b, 30c which extend along the longitudinal axis X from the first plate 14 towards the second plate 16.

[0047] The internal walls 30a of the first branches 28a delimiting the second chamber 25 may be substantially flat. These internal walls 30a may be substantially parallel to each other.

[0048] The external walls 30b of the first branches 28a and the external walls of the second branch(es) 28b are arranged so as to form an angle, this angle being able to form an edge or be rounded.

[0049] Advantageously, the angular amplitude a of each first chamber 25 is between 120 and 150 degrees.

[0050] The walls 30a, 30b, 30c of the branches 28a, 28b advantageously have a thickness that is substantially identical at all points of the branches 28a, 28b. These walls 30a, 30b, 30c may be substantially flat.

[0051] Advantageously, the guides 29 have a thickness that is substantially identical at all points of the guides 29.

[0052] An identical thickness at all points of the branches 28a, 28b and / or the guides 29 has the advantage of facilitating the injection of material during the molding of the dispensing member. In this way, problems of deformation of the part, here the dispensing member, during its manufacture are avoided.

[0053] Advantageously, each external wall 30b of the first branches 28a is substantially parallel to a first internal wall 31a of the guide 29 which is closest to it, and an external wall 30c of the second branch 28b is substantially parallel to a second internal wall 31b of the same guide 29. It is understood that the walls 31a, 31b of each guide 29 are arranged so as to form an angle, this angle being able to form an edge or be rounded. The first chambers 24 thus have the shape of an angled conduit.

[0054] The walls 31a, 31b of the guides 29 may be substantially flat.

[0055] The housing 102 is provided with peripheral input and / or output channels 110a-110f. These channels HOa-llOf advantageously open laterally into the housing 104 through openings 111, 112. The peripheral inlet and / or outlet channels 110a-110f are advantageously at least five in number. In the examples illustrated, the peripheral inlet and / or outlet channels 110a-110f are six in number, namely an inlet and / or outlet channel 110a, a second inlet and / or outlet channel 110b, a third inlet and / or outlet channel 110c, a fourth inlet and / or outlet channel 110d, a fifth inlet and / or outlet channel 110e and a sixth inlet and / or outlet channel 110f. Each of the peripheral inlet and / or outlet channels HOa-llOf is formed as a radial projection from a side wall 106 of the housing 102.

[0056] The central block 12' may have the first chamber(s) 24, provided, opening radially so that angular positions of the body 12 determine a passage of the fluid between the different peripheral inlet and / or outlet channels 110a-110f of the distribution system 100, through the or at least one of the first chambers 24. In the examples illustrated, there are two first chambers 24.

[0057] The central block 12' of the distributor member 10 further has a distribution channel 22 for the fluid. This distribution channel 22 extends axially along the longitudinal axis X. Advantageously, the first distribution channel 22 is centered on the longitudinal axis X.

[0058] The central block 12' also has the second chamber 25 communicating with the distribution channel 22. This second chamber 25 also opens radially.

[0059] The first and / or second chambers 24, 25 advantageously extend angularly around the longitudinal axis X.

[0060] In this way, at least some of the angular positions of the body 12 of the distributor member 10 determine a passage of the fluid between an axial inlet and / or outlet channel 21 and at least one of the peripheral inlet and / or outlet channels 110a-110f of the distribution system 100, through the second chamber 25 and the distribution channel 22.

[0061] Such an axial distribution channel 22 makes it possible to further limit the circumference of the distributor member 10 and therefore the radial size of the distribution system 100.

[0062] Advantageously, the distribution channel 22 communicates with the second chamber 25 over all or part of the height of the second chamber 25. This height of the second chamber 25 extends along the longitudinal axis X. Communication between the distribution channel 22 and the second chamber 25 is via an opening 23.

[0063] Advantageously, the distribution system 100 comprises a single stage. In other words, peripheral inlet and / or outlet channels 110a-110f open into the distributor member 10 substantially at the same level along said longitudinal axis. This makes it possible to improve the axial compactness of the system.

[0064] Advantageously, the peripheral input and / or output channels 110a-110f are distributed over angular sectors P1, P2 on a circumference of the housing 102.

[0065] [Fig. 4] shows a view of the housing 102 along an axial sectional plane. In this example, the housing 104 of the housing 102 may have a second height Hc and the openings 111, 112 of the peripheral inlet and / or outlet channels 110a-110f each have a third height h, such that the first height Hr of the distributor member 10 is less than the second height Hc of the housing 104 and is greater than the third height h of the openings 111, 112.

[0066] Still in [Fig.4], it can be distinguished that the openings 111 of the peripheral input and / or output channels 110a-1 lOd of a first group G1 of the plurality of peripheral input and / or output channels 110a-1 lOf may have a first width D and that the openings 112 of the peripheral input and / or output channels 110e-1 lOf of a second group G2 of the plurality of peripheral input and / or output channels 110a-1 lOf may have a second width d. The first width D is greater than the second width d.

[0067] In application, the passage section of the openings 111, 112 of the peripheral inlet and / or outlet channels 110a-110f is defined as being the first width D for the openings 111 or the second width for the openings 112 multiplied by the third height h.

[0068] Advantageously, this passage section is configured to be at least substantially equal to the sections of the pipes used in hybrid or electric vehicles, in particular in fluid circuits used for thermoregulation.

[0069] [Fig. 5] represents another view of the distribution system 100. This [Fig. 5] further illustrates an example of a first angular sector PI for one of the peripheral inlet and / or outlet channels 110a-110d belonging to the first group G1, and an example of a second angular sector P2 for one of the peripheral inlet and / or outlet channels 110e-110f belonging to the second group G2. In this example of [Fig. 5], the first angular sector PI is advantageously substantially equal to at least 72 degrees. Still in this example, the second angular sector P2 is advantageously substantially equal to at most 36 degrees. The angular sectors PI, P2 are measured taking into account a wall thickness of the peripheral inlet and / or outlet channels HOa-110f. The angular ends of the contiguous sectors are merged. In other words, one angular sector ends when the other begins.

[0070] Advantageously, the peripheral input and / or output channels 110a-110d of the first group Gl are angularly spaced regularly.

[0071] Advantageously, at least three channels 110a-110d of the plurality of peripheral input and / or output channels 110a-110f belong to the first group GL. Each channel 110a-110d of this first group GL occupies a given first angular sector PI.

[0072] Advantageously, at least two channels 110e-110f of the plurality of peripheral input and / or output channels 110a-110f belong to the second group G2. Each channel HOe-110f of this second group G2 occupies a second angular sector P2. This second angular sector P2 has a dimension smaller than the dimension of the first angular sector PL

[0073] It should be noted that the first angular sectors PI occupied by the peripheral input and / or output channels 110a-1 lOd of the first group G1 are not necessarily equal. Similarly, the second angular sectors P2 occupied by the peripheral input and / or output channels 110e-1 lOf of the second group G2 are not necessarily equal. On the other hand, the largest of the angular sectors of the peripheral input and / or output channels of the second group G2 is smaller than the smallest of the angular sectors of the peripheral input and / or output channels of the first group G1.

[0074] The housing 102 may also comprise fixing platforms 114 distributed around the periphery of the housing 102. These fixing platforms 114 have through orifices 116, oriented along the longitudinal axis X. These platforms 114 are intended to allow the fixing of the distribution system 100 on an external element, for example a module, in particular by means of screws inserted into the orifices 116 and the external element.

[0075] The distributor member 10 is further configured so that a rotation of the distributor member 10 allowing the circulation of the fluid between one of the peripheral inlet and / or outlet channels 110e-1 lOf of the second group G2 and one of the inlet and / or outlet channels peripheral output channels 110a-1 lOd of the first group Gl by blocking the circulation between the other of the peripheral input and / or output channels HOe-llOf of the second group G2 and the same of the peripheral input and / or output channels 110a-1 lOd of the first group G1 leaves open the circulation between the other peripheral input and / or output channels 110a-1 lOd of the first group Gl. This will be developed further in relation to figures 6 and following.

[0076] The distributor member 10 may furthermore be configured so that a passage section between one of the chambers 24, 25 and one of said peripheral inlet and / or outlet channels 110a-110d of the first group G1 and a passage section between the same one of the chambers 24, 25 and one of the peripheral inlet and / or outlet channels 110e-110f of the second group G2 is substantially identical in at least one of the angular positions, as this will appear better in relation to FIGS. 6 to 10.

[0077] The first chamber(s) 24 communicate radially with the peripheral inlet and / or outlet channels HOa-llOf. Advantageously, the first chamber(s) 24 communicate with at most two of the peripheral inlet and / or outlet channels 110a-110f, regardless of the angular position of the body 12 of the distributor member 10.

[0078] The second chamber 25 of the distributor member 10 is intended to communicate radially with the peripheral inlet and / or outlet channels HOa-llOf. Advantageously, the second chamber 25 is intended to communicate with at most one of the peripheral channels 110a-110f, regardless of the angular position of the body 12 of the distributor member 10.

[0079] The distribution system 100 may comprise an actuator, not shown, for example a stepper motor, for rotating the distributor member 10 around the longitudinal axis X. The distributor member 10 may then comprise a drive shaft 40, intended to be engaged with the actuator. The maximum nominal torque of the actuator is, for example, 2.5 Nm (Newton meter), in particular for a standard pressure in the fluid circuit, for example approximately 1.2 bars.

[0080] The distribution system 100 may also comprise a seal, not shown, located between the distributor member 10 and the internal face of the side wall 106 of the housing 102. This seal may comprise a first part, called annular, in the form of a ring or an angular sector of a ring located at the level of the first plate 14 of the distributor member 10 and / or a second part, called annular, in the form of a ring or an angular sector of a ring located at the level of the second plate 16 of the distributor member 10. The friction in question is therefore more specifically generated between the seal and the distributor member 10.

[0081] The distribution system 100 may further comprise a plate, not shown, which is designed to close the housing 102. This plate 112 is mounted orthogonal to the longitudinal axis X of the distributor member 10. The plate can be fixed, in particular welded, to the housing 102. This plate is furthermore configured to be fixed on a fluid distribution support having the distribution orifices of the system, the inlet and / or outlet channels opening respectively onto the distribution orifices.

[0082] Different dispensing positions of the dispensing system 100 of FIGS. 6 to 10 are shown below.

[0083] In the following, the flows of the fluid, in particular a heat transfer liquid, through the chambers 24, 25 of the distributor member 10 are represented by arrows in the corresponding figures.

[0084] [Fig. 6] represents a first distribution position of the distribution system 100. In this first distribution position, the second chamber 25 connects the distribution channel 22 and the peripheral inlet and / or outlet channel 110a. One of the first chambers 24 connects the second 110b and third 110c peripheral inlet and / or outlet channels. The other of the first chambers 24 connects the fourth 110d and fifth 110e peripheral inlet and / or outlet channels. In this first position, the circulation in the sixth peripheral inlet and / or outlet channel 110f is blocked.

[0085] [Fig.7] represents a second distribution position of the distribution system 100. In this second distribution position, the second chamber 25 connects the distribution channel 22 and the fourth peripheral inlet and / or outlet channel 110d. One of the first chambers 24 connects the second 110b and third 110c peripheral inlet and / or outlet channels. The other of the first chambers 24 connects the first 110a and fifth 110e peripheral inlet and / or outlet channels. In this second position, the circulation in the sixth peripheral inlet and / or outlet channel 110f is blocked.

[0086] [Fig. 8] represents a third distribution position of the distribution system 100. In this third distribution position, the second chamber 25 connects the distribution channel 22 and the second peripheral inlet and / or outlet channel 110b. One of the first chambers 24 connects the third 110c and fourth 110d peripheral inlet and / or outlet channels. The other of the first chambers 24 connects the first 110a and fifth 110e peripheral inlet and / or outlet channels. In this second position, the circulation in the sixth peripheral inlet and / or outlet channel 110f is blocked.

[0087] [Fig. 9] represents a fourth distribution position of the distribution system 100. In this fourth distribution position, the second chamber 25 places the distribution channel 22 and the second inlet channel in communication and / or peripheral outlet 110b. One of the first chambers 24 connects the third 110c and fourth 110d peripheral inlet and / or outlet channels. The other of the first chambers 24 connects the first 110a and sixth 110f peripheral inlet and / or outlet channels. In this second position, circulation in the fifth peripheral inlet and / or outlet channel 110e is blocked.

[0088] [Fig. 10] shows a fifth distribution position of the distribution system 100. In this fifth distribution position, the second chamber 25 connects the distribution channel 22 and the fourth peripheral inlet and / or outlet channel 110d. One of the first chambers 24 connects the second 110b and third 110c peripheral inlet and / or outlet channels. The other of the first chambers 24 connects the first 110a and sixth 110c peripheral inlet and / or outlet channels. In this second position, circulation in the fifth peripheral inlet and / or outlet channel 110e is blocked.

[0089] In the example illustrated in Figures 6 to 10, as a reminder, there are five angular distribution positions and they involve circulation of the fluid in at least one of the chambers 24, 25. The first, second, third and fourth peripheral inlet and / or outlet channels 110a-110d form the first group G1 and each occupy a first angular sector PI equal to 72 degrees. The fifth and sixth peripheral inlet and / or outlet channels 110e-110f form the second group G2 and each occupy a second angular sector P2 equal to 36 degrees. This configuration makes it possible, with a small amplitude rotation, to move from the second distribution position of [Fig. 6] to the fifth distribution position of [Fig. 9] but also to move from the third distribution position of [Fig. 7] to the fourth distribution position of [Fig.8], and vice versa, while maintaining identical fluid circulation on the other inlet and / or outlet channels. In this way, it is possible to reduce the torque required to operate the distribution system.

[0090] For this purpose, here, without this being necessary, the peripheral input and / or output channels 110e, 110f of the second group G2 are angularly contiguous. Furthermore, one 110a of the peripheral input and / or output channels of the first group G1 is angularly contiguous to one 110f of the peripheral input and / or output channels of the second group G2. Furthermore, another 110d of the peripheral input and / or output channels of the first group G1 is angularly contiguous to the other 110e of the peripheral input and / or output channels of the second group G2. This configuration makes it possible to have an operation in accordance with the invention with a rotation as both clockwise and counterclockwise of the distributor organ 10. It also promotes the symmetrical configuration of the latter.

[0091] In light of the above, it is understood that the invention makes it possible to ensure a reduction in the mass of the distributor member and therefore a lightening of the distribution system as a whole. In addition, the reduction in the mass of the distributor member makes it possible to reduce the torque required for its rotational actuation.

[0092] Preferably, the invention also makes it possible to ensure reduced contact between the dispensing member and a seal which, in use, is placed between the dispensing member and the housing. In use, the distal edges will locally compress the seal, which makes it possible to ensure sealing while limiting friction. In addition, the reduction in friction makes it possible to reduce the torque required to actuate the dispensing member in rotation.

[0093] The invention also has the advantage of allowing several possibilities for distributing the fluid, with energy savings. Indeed, the change of distribution position with a low amplitude rotation reduces the torque necessary for the rotation of the distributor member and, consequently, allows the use of less powerful actuators.

[0094] The invention also has the advantage of allowing a reduction in the radial and / or axial size of the distribution system 100. Indeed, this reduction in size can be further improved thanks to the distribution channel 22. Indeed, the position of the distribution channel 22, for example central, makes it possible to simplify the architecture of the distributor member 10 and thus make the distribution system more compact.

Claims

Claims

1. A system (100) for distributing a fluid, said distribution system (100) being intended to communicate at least some of the branches of a fluid circuit with each other according to different configurations of said system, said distribution system (100) comprising a distributor member (10), said distributor member (10) being intended to be movable in rotation about a longitudinal axis (X) in order to selectively serve said branches to be communicated with each other according to angular positions of said distributor member (10), said distributor member comprising a body (12) defining a plurality of chambers (24, 25) for circulation of said fluid, said body comprising one or more guide shapes (28a, 28b, 29) for guiding said fluid in said chambers, said guide shape(s) having an axial recess (32a, 32b, 32c), said guide shape(s) being defined at least by guides (29),each of said guides (29) having an axial recess (32c) which is radially open.,

2. Dispensing system (100) according to claim 1, wherein said body (12) has a first plate (14) and / or a second plate (16) for guiding rotation.

3. A dispensing system (100) according to claim 2, wherein said guide shape(s) are defined at least in part by branches (28a, 28b), said branches being connected together at a central portion (26) of said dispensing member (10) to at least in part define said chambers (24, 25).

4. A dispensing system (100) according to any one of claims 2 or 3, wherein said axial recess (32a, 32b, 32c) extends from the first plate (14) towards the second plate (16).

5. A dispensing system (100) according to any one of claims 3 to 4, wherein said branches (28a, 28b) are hollow such that the axial recess (32a, 32b) is internal to said branches (28a, 28b).

6. Dispensing system (100) according to claim 5, wherein said internal axial recess (32a, 32b) of said branches (28a, 28b) is a blind recess, open on the first plate (14) or the second plate (16).

7. A dispensing system (100) according to any one of claims 3 to 6, wherein said branches (28a, 28b) comprise walls (30a, 30b, 30c) extending along the longitudinal axis (X) from the first (14) tray towards the second tray (16).

8. A distribution system (100) according to claim 7, wherein said walls (30a, 30b, 30c) of said branches (28a, 28b) have a thickness that is substantially identical at all points of said branches.

9. A dispensing system (100) according to any preceding claim, wherein said guides (29) have a substantially identical thickness at all points of said guides.

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