FLUID DISTRIBUTION SYSTEM

Abstract

Fluid distribution system, said distribution system being intended to connect at least some of the branches of a fluid circuit with each other according to different configurations of said system, said distribution system comprising a distributor element, said distributor element being intended to be movable in rotation about a longitudinal axis in order to selectively supply said branches to be connected with each other according to angular positions of said distributor element, said distribution system comprising a housing defining a compartment for the distributor element, said housing being provided with a plurality of peripheral inlet and / or outlet channels, said system comprising a seal (200) located in the compartment between the distributor element and the housing to limit the risk of fluid leakage between said peripheral inlet and / or outlet channels,said joint (200) being open angularly at the right-hand side of one of the first of the peripheral inlet and / or outlet conduits. Figure for the abbreviation: Figure 6,

Description

Title of the invention: FLUID DISTRIBUTION SYSTEM 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 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, the mechanical torque required to operate these valves 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 around 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, said distribution system comprising a housing defining a housing for the distributor member, said housing being provided with a plurality of peripheral inlet and / or outlet channels,said system comprising a seal located in the housing between the distributor member and the casing to limit the risks of fluid leakage between said peripheral inlet and / or outlet channels, said seal being angularly open in line with the first of the inlet and / or outlet conduits, peripheral output.

[0006] Thanks to such a configuration, reduced contact is ensured between the distributor member and the seal. The reduction in friction thus generated makes it possible to reduce the torque required to actuate the distributor member in rotation.

[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: - said seal has the shape of a cylindrical cage, angularly open, - said distributor member has a first and / or a second peripheral guide edge; - said seal comprises a first and / or a second annular ring for cooperating respectively with the first and / or the second peripheral edge; - the first and / or second rods are angularly open to the right of said first peripheral inlet and / or outlet conduit; - said distributor member comprises a first and / or a second guide plate; - said first and / or second peripheral edges are respectively located at the level of the first and / or second plates; - said joint comprises one or more axial branches connecting the first and second rods; - two of said axial branches respectively connect angular ends of said first and second rods on either side of said first peripheral inlet and / or outlet channel; - said peripheral inlet and / or outlet conduits open into said housing via radial openings; - said branches are located angularly on either side of each of said openings; - said seal is fixed on the housing; - said seal comprises a body and a coating; - said body is fixed on said housing; - said coating is in contact with the distributor member; - said body is made of elastomer, in particular EPDM; - said coating is made of a material with a sliding effect, in particular PTFE; - the body and the covering are integral with each other; - the branches have axial fixing grooves; - the distributor member comprises a body defining a plurality of fluid circulation chambers, the body comprises one or more shapes for guiding the fluid in the chambers, said guide shape(s) having a distal edge intended to be in contact in a substantially linear manner with the seal of the system; said distal edge is intended to come into contact with said branch(es) of the seal; 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; said rib has a rounded shape; said rib extends along the longitudinal axis from the first plate towards the second plate; said body comprises a central block at least partially defining the chambers; said central block comprises branches connected together at a central part of said distributor member to at least partially define said chambers; said branches of the central block extend substantially radially from said central portion; said guide shapes are defined at least by said branches of the central block; each of said branches of the central block is provided with at least one of said distal edges; said distal edges of said branches of the central block are opposite said central portion; said guide shapes are defined at least by said guides, placed angularly between first and second of said branches of the central block, in the vicinity of a lateral edge of the distributor member; each of said guides is provided with two said distal edges, provided angularly opposite; the first and second plates have rounded peripheral edges; the first and second branches define, together with at least one of the guides, the first chambers; the first branches of the central block define the or one of the second chambers; the branches of the central block comprise walls extending along the longitudinal axis from the first plate towards the second plate; the walls of the branches of the central block delimiting the second chamber are substantially flat and / or parallel; the seal is located between the distributor member and an internal face of a side wall of the housing; the distribution system has a single distribution stage; the peripheral input and / or output channels are distributed over angular sectors on a circumference of the housing; 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 a 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; an angular sector of the first peripheral input and / or output channel having a dimension greater than an angular sector of all or part of the other peripheral input and / or output channels; the housing comprises 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 a 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 a 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; said 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 and / or outlet channels peripheral output 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; the peripheral input and / or output channels are six in number; 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 100 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] schematically illustrates in perspective along a cross-sectional plane an example of a fluid distribution system according to the invention,

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

[0011] [Fig.3] illustrates schematically in perspective according to a section plane transversely the distributor organ 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] illustrates in perspective a joint of the system according to [Fig.l];

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

[0019] [Fig. 11] 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].

[0020] In these figures, the same reference corresponds to identical or similar. Detailed description of the invention

[0021] 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.

[0022] 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.

[0023] The distribution system 100 further comprises a housing 102 defining a housing 104 for the distributor member 10. The housing 102 is provided with peripheral inlet and / or outlet channels HOa-llOf for the fluid. These channels HOa-llOf advantageously open laterally, in particular radially, into the housing 104 via openings 111, 112.

[0024] As better illustrated in Figures 5 and 6, said system further comprises a seal 200 located in the housing 104 between the distributor member 10 and the housing 102 to limit the risks of fluid leakage between said peripheral inlet and / or outlet channels 110a-110f for a given angular position and / or when moving from one of its angular positions to another.

[0025] According to the invention, said seal 200 is angularly open in line with the first one of the peripheral inlet and / or outlet conduits. This is the inlet and / or outlet conduit 110a. By "angularly open", it is meant that said seal 200, when taken alone, has a configuration allowing its angular ends to be separated from each other, unlike a seal formed from a complete ring for which this would not be possible. It is noted that this angular interruption is visible [Fig.6] but is not in [Fig.5] and it is understood that it limits the friction between the distributor member 10 and the housing 102 compared to a seal which would be formed from a complete ring.

[0026] Said distributor member 10 advantageously has a first and / or a second peripheral edge 20 for guiding in rotation. For this purpose, said distributor member 10 comprises a first and / or a second guide plate 14, 16, in particular a lower plate 14 and an upper plate 16. The first and second plates 14, 16 are advantageously parallel and perpendicular to the longitudinal axis X. Said first and / or second peripheral edges 20 are respectively located, exte- later, at the level of the first and / or second plates 14, 16.

[0027] Said seal 200 comprises a first and / or a second annular ring 202 for cooperating respectively with the first and / or the second peripheral edge 20. The first and / or second rings 202 are angularly open in line with said first peripheral inlet and / or outlet conduit 110a.

[0028] Said seal 200 comprises one or more axial branches 204a, 204e connecting the first and second rings 202. Said branches 204a-204e are located angularly on either side of each of said openings 110a-110f. Two 204a, 202e of said axial branches respectively connect angular ends of said first and second rings 202 on either side of said first peripheral inlet and / or outlet channel 110a.

[0029] Said seal 200 is fixed to the housing 102. Said housing is here provided for this purpose with axial ribs cooperating with axial grooves 208 formed in said seal 200. As a variant, the grooves are on the housing and the ribs are on the seal.

[0030] Said branches 204a-204e of the joint 200 extend angularly, in particular by 5 at 30°.

[0031] Said seal preferably has a cylindrical cage shape, angularly open. Said cage is here formed of said rings 202 and / or said branches 204a-204e. Passages, in particular rectangular, for the fluid are defined between said rings 202 and / or said branches 204a-204e, in particular opposite said orifices 111, 112.

[0032] Said rods 202 and / or said branches 204a-204e here have material recesses 216, respectively angularly and / or axially elongated. Said material recesses alternately have a point shape, in particular at points of intersection of said rods 202 and / or said branches 204a-204e.

[0033] Said seal 200 comprises, for example, a body 210 and a covering 212. Said body 210 is fixed to said housing 102. Said covering 212 is in sliding contact with the dispensing member 10. The body 210 and the covering 212 are integral with each other, in particular by overmolding.

[0034] Said body 210 is, for example, made of elastomer, in particular EPDM, and / or said coating 212 is a material with a sliding effect, in particular PTFE.

[0035] Referring again to Figures 1 to 4, it can be seen that the distributor member 10 further comprises a body 12 defining a plurality of chambers 24, 25 for circulation of the fluid. The body 12 comprises guide shapes 28a, 28b, 29 for guiding the fluid in the chambers 24, 25. Each of the guide shapes also has at least one said distal edge 34 intended to be in contact with the seal of the system. More precisely, here, said distal edge 34 is intended to come into contact with the said branch(es) 204a-204e of the seal 200 during the rotation of said distributor member tributor 10.

[0036] 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 the first plate 14 and / or the second rotational guide plate 16, then provided 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.

[0037] Each distal edge 34 comprises at least one first chamfer 35a and at least one second chamfer 35b, such that a first chamfer 35a and a second chamfer 35b together define a rib 36. In use, this rib 36 locally compresses the seal of the distribution system.

[0038] The first and second chamfers 35a, 35b also have the advantage of preventing the distributor member 10 from becoming blocked during rotation. Indeed, during rotation of the distributor member, the distal edges 34 of the guide shapes must pass through the passages of 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.

[0039] 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.

[0040] 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.

[0041] Advantageously, the peripheral edges 20 of each plate are rounded. This has the same advantages as for the rounded rib(s) 36.

[0042] 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 1.9, or even between 0.6 and 2.7.

[0043] 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.

[0044] It is understood that having an external diameter 0r that is high relative to the first height Hr 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.

[0045] 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.

[0046] 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.

[0047] 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. 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.

[0048] 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.

[0049] 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 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.

[0050] Advantageously, the branches 28a, 28b define at least in part the guide shapes. Each of said branches 28a, 28b is provided with at least one of said distal edges 34, here two of said distal edges, provided at two opposite angular ends of said branches 28a, 28b. As will have been understood, the distal edges 34 of said branches 28a, 28b are radially opposite the central part 26.

[0051] 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.

[0052] 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 the second chamber 25, is defined between said 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.

[0053] The internal walls 30a of the first branches 28a delimiting the second chamber 25 may be substantially flat and parallel to each other.

[0054] 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.

[0055] 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.

[0056] 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 the first 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 110a-110f is arranged as a radial projection from a side wall 106 of the housing 102.

[0057] The central block 12' may have the first chamber(s) 24, provided to open 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.

[0058] 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.

[0059] The central block 12' also has the second chamber 25 communicating with the distribution channel 22. This second chamber 25 also opens radially.

[0060] The first and / or second chambers 24, 25 advantageously extend angularly around the longitudinal axis X.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] Advantageously, the angular amplitude of each first chamber 25 is between 100 and 150 degrees, in particular taking into account their bent profile.

[0065] 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.

[0066] Advantageously, the peripheral input and / or output channels 110a-110f are distributed over angular sectors P1, P2 on a circumference of the housing 102.

[0067] [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.

[0068] 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.

[0069] 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 d for the openings 112 multiplied by the third height h.

[0070] 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.

[0071] [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.

[0072] Advantageously, the peripheral input and / or output channels 110a-110d of the first group G1 are angularly spaced regularly.

[0073] 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.

[0074] Advantageously, at least two channels 110e-1 lOf of the plurality of peripheral input and / or output channels 110a-1 lOf belong to the second group G2. Each channel 110e-1 lOf 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

[0075] 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.

[0076] Preferably, the angular sector of the first peripheral input and / or output channel 110a has a dimension greater than the angular sector of all or part of the other peripheral input and / or output channels. Here, said first peripheral input and / or output channel 110a is thus part of the first group PL

[0077] 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.

[0078] 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-110f of the second group G2 and one of the peripheral inlet and / or outlet channels 110a-110d of the first group G1 by blocking the circulation between the other of the peripheral inlet and / or outlet channels HOe-110f of the second group G2 and the same of the peripheral inlet and / or outlet channels 110a-110d of the first group G1 leaves open the circulation between the other peripheral inlet and / or outlet channels 110a-110d of the first group G1. This will be developed further in relation to figures 6 and following.

[0079] 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.

[0080] 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.

[0081] The second chamber 25 of the distributor member 10 is intended to communicate radially with the peripheral inlet and / or outlet channels 110a-110f. 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.

[0082] The distribution system 100 may comprise an actuator, not shown, for example a stepper motor, for driving the distribution member 10 in rotation around the longitudinal axis X. The distribution 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, in particular for a standard pressure in the fluid circuit, for example approximately 1.2 bars.

[0083] The distribution system 100 may further comprise a plate, not re- presented, which is designed to close the housing 102. This plate is mounted orthogonally 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.

[0084] Different dispensing positions of the dispensing system 100 of FIGS. 7 to 11 are shown below.

[0085] 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.

[0086] [Fig. 7] 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.

[0087] [Fig. 8] 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.

[0088] [Fig. 9] 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.

[0089] [Fig. 10] 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.

[0090] [Fig. 11] 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 110f peripheral inlet and / or outlet channels. In this second position, circulation in the fifth peripheral inlet and / or outlet channel 110e is blocked.

[0091] In the example illustrated in Figures 7 to 11, 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.

[0092] 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 rotation in both the clockwise and counterclockwise directions of the distributor member 10. It also favors the symmetrical configuration of the latter.

[0093] In light of the above, it is understood that the invention makes it possible to ensure a minimal contact between the dispensing member 10 and a seal 200 which, in use, is placed between the dispensing member 10 and the housing 102. In use, the distal edges 34 will locally compress the seal 200, which ensures sealing while limiting friction. In addition, the reduction in friction makes it possible to reduce the torque required to actuate the dispensing member 10 in rotation.

[0094] 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 10 and, consequently, allows the use of less powerful actuators.

[0095] 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. Distribution system (100) for 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 distribution system comprising a housing (102) defining a housing (104) for the distributor member (10), said housing (102) being provided with a plurality of peripheral inlet and / or outlet channels (110a-110f),said system comprising a seal (200) located in the housing (104) between the distributor member (10) and the housing (102) to limit the risks of fluid leakage between said peripheral inlet and / or outlet channels (110a-110f), said seal (200) being angularly open in line with the first one (110a) of the peripheral inlet and / or outlet conduits (110a-110f).,

2. System according to the preceding claim in which said dispensing member (10) has a first and / or a second peripheral guide edge (20), said seal (200) comprising a first and / or a second annular ring (202) for cooperating respectively with the first and / or the second peripheral edge (20).

3. System according to the preceding claim in which the first and / or second rods (202) are angularly open in line with said first peripheral inlet and / or outlet conduit (110a).

4. System according to any one of claims 2 or 3 wherein said dispensing member (10) comprises a first and / or a second guide plate (14, 16), said first and / or second peripheral edges (20) being respectively located at the level of the first and / or second plate (14, 16).

5. System according to any one of claims 2 to 4 wherein said joint (200) comprises one or more axial branches (204a-204e) connecting the first and second rods (202).

6. System according to the preceding claim in which two (204a, 204e) of said axial branches respectively connect angular ends of said first and second rods (202) on either side. of said first peripheral input and / or output channel (110a),

7. System according to any one of claims 5 or 6 in which said peripheral inlet and / or outlet conduits (HOa-llOf) open into said housing (104) via radial openings (111, 112), said branches (204a-204e) being situated angularly on either side of each of said openings (111, 112).

8. System according to any one of the preceding claims wherein said seal (200) comprises a body (210) and a covering (212), said body (210) being fixed on said housing (102), said covering (212) being in contact with the dispensing member (10).

9. System according to any one of the preceding claims in which said distributor member (10) comprises 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 said fluid in said chambers, the guide shape or shapes having a distal edge (34) intended to be in contact in a substantially linear manner with the seal of said system (100).

10. System according to any one of the preceding claims in which said distributor member (10) has a distribution channel (22) for the fluid, extending axially along the longitudinal axis (X), and a second (25) of said chambers communicating with this distribution channel (22), said second chamber (25) 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 peripheral inlet and / or outlet channels (120a-120f) of the distribution system, through the second chamber (25) and the distribution channel (22).

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