Flow path formation device

Abstract

A flow path formation device (10) comprises a structure with multiple independent fluid paths (121, 122, 123, 124, 125, 126, 127, 128). The multiple fluid paths include adjacent fluid paths that lie side by side, are offset in a predetermined assembly direction (Du), and intersect independently. The structure is composed of two separate elements: a first element (14, 18) and a second element (16, 20), which are combined and connected to each other in the assembly direction.

Description

Cross-reference to related registration

[0001] This application is based on Japanese patent application No. 2023-062944, filed on April 7, 2023. The content of the aforementioned application is incorporated herein by reference. Technical field

[0002] The present disclosure relates to a flow path formation device. background

[0003] A pump device with a multi-way valve is typically used in a thermal management system in a vehicle (e.g., patent literature 1). In the pump device described in patent literature 1, a flow path forming device, which allows the fluid to flow into and out of the multi-way valve, includes an integrated plate body in which several flow paths are formed, and a pair of end plates that hold the integrated plate body between the end plates. Literature on the state of the art Patent literature

[0004] Patent Literature 1: CN 115388193 A Summary

[0005] For example, if the number of functional components outside a flow path formation device is increased, the flow paths within the flow path formation device become more complex. This increases the length of the flow paths and the pressure drop, which in turn reduces the efficiency of thermal utilization in the thermal management system. Furthermore, the flow path formation device may become too large, reducing its suitability for installation in vehicles.

[0006] Based on these facts, the inventors explored a structure in which flow paths are offset and intersect independently to shorten the length of the flow paths in the flow path formation device. By connecting three or more elements, the structure in which the flow paths are offset and intersect independently can be realized. However, there are concerns regarding the occurrence of fluid leakage due to the increased number of connections and regarding the increased cost due to the increased number of parts. Similar concerns exist when the number of functional components outside the flow path formation device is small.

[0007] The aim of the present disclosure is to provide a flow path formation device in which the flow paths are offset and cross independently of each other, and which is able to reduce the number of connecting elements.

[0008] A flow path formation device comprises a structure containing multiple, independent fluid paths. These multiple fluid paths are adjacent, offset in a predetermined assembly direction, and intersect independently. The structure is composed of two separate elements: a first element and a second element, which are combined and joined together in the assembly direction.

[0009] If the adjacent fluid paths are arranged at least partially such that they are offset in the assembly direction and cross each other independently, it is possible to avoid interference between the fluid paths and at the same time increase the packing density of the fluid paths, as in the configuration above.

[0010] Additionally, in the flow path formation device of the present disclosure, the two separate elements, the first element and the second element, are connected to form the adjacent fluid paths, which have at least the parts that are offset from each other and intersect independently. The number of connected elements can be reduced, and the independent flow paths are offset and intersect independently of each other.

[0011] In particular, the flow path formation device in the present disclosure, compared to a structure in which the flow paths are offset by the connection of three or more elements and intersect independently, can reduce the number of connections between the elements and prevent fluid from escaping from the connections between the elements. Additionally, a cost reduction can be expected due to the small number of parts.

[0012] Herein, the term "independent flow path" refers to a flow path that is not connected to any other flow path within the flow path formation device. The term does not specify its relationship to any other flow path outside the flow path formation device. The independent flow path may be connected to any other flow path outside the flow path formation device. Adjacent Fluid Paths includes a section where the adjacent fluid paths lie close to each other, without any other flow path being arranged between them.

[0013] A reference sign in parentheses, assigned to each configuration element, provides an example of the correspondence between the configuration elements and the specific configuration elements described in later embodiments. Brief description of the drawings Fig. Figure 1 is a schematic diagram for the configuration of a fluid control system, which includes a device for flow path formation according to a first embodiment. Fig. Figure 2 is a schematic perspective view of the device for forming a flow path. Fig. Figure 3 is a schematic perspective exploded view of the flow path formation device. Fig. Figure 4 is a schematic perspective view showing a first element. Fig. Figure 5 is a schematic perspective view showing a second element. Fig. Figure 6 is a schematic perspective view of the second element, shown from the direction of arrow VI in Fig. 5 is seen from. Fig. Figure 7 is a cross-sectional view along line VII-VII of Fig. 5. Fig. Figure 8 is a schematic diagram of the configuration to illustrate the first element and the second element before and after their connection. Fig. Figure 9 is a schematic diagram of the configuration of a fluid control system that includes a manifold, according to a comparative example to the first embodiment. Fig. Figure 10 is a schematic perspective view of the distributor according to the comparative example of the first embodiment. Fig. Figure 11 is a schematic perspective exploded view of the distributor according to the comparative example for the first embodiment. Fig. Figure 12 is a schematic perspective exploded view of a flow path formation device according to a first modification of the first embodiment. Fig. Figure 13 is a schematic perspective exploded view of the flow path formation device, seen from the direction of arrow XIII in Fig. 12. Fig. Figure 14 is a schematic perspective exploded view of a flow path formation device according to a second modification of the first embodiment. Fig. Figure 15 is a schematic perspective exploded view of the flow path formation device from the direction of arrow XV in Fig. 14 seen from. Fig. Figure 16 is a schematic diagram of the configuration of a fluid control system with a flow path formation device according to a third modification of the first embodiment. Fig. Figure 17 is a schematic diagram of a flow path formation device according to the second embodiment. Fig. Figure 18 is a schematic perspective view of the device for forming a flow path according to the second embodiment. Fig. Figure 19 is a schematic perspective view of the flow path formation device from the direction of arrow XIX in Fig. 18 seen from. Fig. Figure 20 is a schematic planar view of the flow path formation device. Fig. 21 is a cross-sectional view along line XXI-XXI of Fig. 20. Fig. Figure 22 is a schematic planar view of a second element. Fig. Figure 23 is a schematic diagram illustrating an area of ​​a valve device to which the flow path formation device is attached. Fig. Figure 24 is a schematic perspective exploded view of the flow path formation device. Fig. Figure 25 is a schematic perspective view of a flow path formation device according to another embodiment. Fig. Figure 26 is a schematic perspective exploded view of a flow path formation device according to another embodiment. Embodiments for carrying out the invention

[0014] The embodiments of this disclosure are described below with reference to the drawings. In the following embodiments, sections that are identical or equivalent to those described in a preceding embodiment are identified by the same reference numerals, and the description of the identical or equivalent sections may be omitted. If only some of the configuration elements are described in the embodiment, the remaining configuration elements may be adopted from those described in the preceding embodiment. The following embodiments may be partially combined with one another, even if such a combination is not explicitly described, as long as there is no disadvantage with respect to such a combination. First embodiment

[0015] The present embodiment is described with reference to the Fig. 1 to 8 described. In the present embodiment, an example is described in which a flow path formation device 10 according to the present disclosure is applied to a fluid control system 1 installed in an electric vehicle.

[0016] The fluid control system 1 is a heat distribution system that distributes heat generated by a cooling circuit and various heat-generating devices via a fluid that serves as a heat transfer medium to various devices that require heat in a suitable manner.

[0017] As in Fig. As shown in Figure 1, the fluid control system 1 includes fluid devices such as: a pump device PD that generates a fluid flow, a valve device VD that switches a fluid path, and a thermal device SD that serves as a temperature control target or heat source. Furthermore, the fluid control system 1 includes a flow path forming device 10 that connects the fluid devices such as the pump device PD, the valve device VD, and the thermal device SD. The fluid circulation system 1 also includes a fluid circulation circuit (not shown) that has several fluid lines FP.

[0018] In the present embodiment, the valve device VD is configured as a five-way valve with five ports P1 to P5. In the valve device VD, the flow path formation device 10 is connected to a first port P1 and a second port P2, while the fluid lines FP are connected to a third port P3, a fourth port P4, and a fifth port P5.

[0019] In Fig. Figure 1 illustrates the fluid control system 1 with a pump device PD, a valve device VD, a thermal device SD, and a flow path forming device 10, but it is not limited to this configuration. The fluid control system 1 can have a different configuration than the one shown. Fig. 1 illustrated configuration

[0020] The flow path forming device 10 is a distributor containing several fluid paths through which the fluid flows. The fluid flowing through the several fluid paths of the flow path forming device 10 is a coolant. The coolant can be an antifreeze, but it can also be a liquid containing water and not an antifreeze.

[0021] The flow path formation device 10 includes a structure 12 containing several independent fluid paths. The structure 12 is connected to an external device through which the fluid can flow in or out, for example, via the fluid paths.

[0022] In planar view, structure 12 has an essentially T-shaped external form. Specifically, structure 12 comprises a first part 12A, which extends in a straight line, and a second part 12B, which is combined with the first part 12A. One end of the second part 12B is connected to an intermediate section of the first part 12A in the direction of extension of the first part 12A. The second part 12B extends in a straight line and perpendicular to the first part 12A. Within structure 12, the first part 12A and the second part 12B can be combined such that they intersect diagonally.

[0023] As in Fig. As illustrated in Figure 2, in structure 12 the legs 12C and 12D are each provided at positions corresponding to the opposite ends of the first part 12A, and the legs 12E and 12F are each provided at positions corresponding to the opposite ends of the second part 12B.

[0024] Each leg 12C, 12D, 12E, 12F is a section to which an external device is attached. Legs 12C and 12D extend substantially perpendicular to the direction of extension of the first part 12A. Legs 12E and 12F extend substantially at right angles to the direction of extension of the second part 12B. In this example, although the legs 12C, 12D, 12E, and 12F have the same length in their directions of extension, they may be of different lengths.

[0025] In the structure 12 of the present embodiment, three legs 12C, 12D and 12F are arranged in a row in the extension direction of the first part 12A. In particular, in the structure 12, the leg 12F, which is provided at the end of the second part 12B, is arranged between the two legs 12C and 12D, which are provided at opposite ends of the first part 12A.

[0026] The structure 12 of the present embodiment includes a first fluid path 121 connecting the thermal device SD and the valve device VD, and a second fluid path 122 connecting the pump device PD and the valve device VD. In the present embodiment, the fluid devices, such as the pump device PD, the valve device VD, and the thermal device SD, form an “external device”.

[0027] The first fluid path 121 comprises a first port 121a connected to the thermal device SD, a second port 121b connected to the valve device VD, and a first intermediate flow path section 121c connecting the first port 121a and the second port 121b. The first intermediate flow path section 121c is formed within the first part 12A of the structure 12. The first port 121a is formed within the leg 12C provided at one end of the first part 12A. The second port 121b is formed within the leg 12D provided at the other end of the first part 12A.

[0028] The flow of the second fluid path 122 includes a third port 122a, which is connected to the pump device PD, a fourth port 122b, which is connected to the valve device VD, and a second intermediate flow path section 122c, which connects the third port 122a and the fourth port 122b. The second intermediate flow path section 122c is formed within the second part 12B of the structure 12. The third port 122a is formed within the leg 12E, which is provided at one end of the second part 12B. The fourth port 122b is formed within the leg 12F, which is provided at the other end of the second part 12B.

[0029] At least part of the first fluid path 121 and at least part of the second fluid path 122 are offset in a later described assembly direction Du and intersect independently of each other. As in Fig. As illustrated in Figure 3, the structure 12 is assembled by combining two separate elements, namely a first element 14 and a second element 16, in the predetermined assembly direction.

[0030] In the present embodiment, a first direction perpendicular to the mounting direction Du is designated as a longitudinal direction Dd, and a second direction perpendicular to both the mounting direction Du and the longitudinal direction Dd is designated as the lateral direction Dw. The in Fig. 2 and Fig. Figure 3, illustrating the orientation of structure 12, is an example. The orientation of structure 12 when installed in a vehicle is not limited to, for example, the orientation shown in Figure 3. Fig. 2 and Fig. 3 illustrated orientations limited.

[0031] The first element 14 and the second element 16 are each made of a thermoplastic material. Both elements are injection-molded parts produced in a mold without undercuts, allowing the mold to be removed in the assembly direction Du.

[0032] First, the first element 14 is described. The first element 14 is arranged on one side of the second element 16 in the assembly direction Du. As in Fig. 3 and Fig. As illustrated in Figure 4, the first element 14 is a molded part and includes a first recess 141 and a first cover 142, which are formed together. The first recess 141 has an opening on the opposite side of the first element 14 in the assembly direction Du, facing the second element 16. In the present embodiment, the first recess 141 corresponds to a “first flow path section” and the first cover 142 corresponds to a “fourth flow path section”.

[0033] The first recess 141 forms part of the first part 12A and extends along the longitudinal direction Dd. The first recess 141 includes a first bottom wall 141a extending along the longitudinal direction Dd, and four first side walls 141b, 141c, 141d and 141e projecting from four sides of the first bottom wall 141a towards the other side of the first part 14 in the assembly direction Du.

[0034] The first cover 142 forms part of the second part 12B and extends in the width direction Dw. One end of the first cover 142 in the width direction Dw is connected to the first side wall 141b of the first recess 141.

[0035] The first element with the above configuration is a molded part in which the first recess 141 and the first cover 142 are formed together. Since the first element 14 does not contain any sections that are opposite each other in the assembly direction Du, the first element 14 has the shape without undercuts, so that the shape can be removed in the assembly direction Du.

[0036] Next, the second element 16 is described. The second element 16 is arranged on the opposite side of the first element 14 in the assembly direction Du. As shown in the Fig. As illustrated in Figures 5 to 6, the second element 16 is a molded part in which a second recess 161, a second cover 162, a first cylinder 163, a second cylinder 164, a third cylinder 165, and a fourth cylinder 166 are formed together. In the present embodiment, the second recess 161 represents a "third flow path section" and the second cover 162 represents a "second flow path section".

[0037] The second recess 161 forms part of the second part 12B and extends along the width direction Dw. The second recess 161 has an opening on one side of the second part 16 in the assembly direction Du. The second recess 161 includes a second bottom wall 161a extending along the width direction Dw and four second side walls 161b, 161c, 161d, and 161e projecting from four sides of the second bottom wall 161a toward one side of the second part 16 in the assembly direction Du.

[0038] As in Fig. 5 and Fig. As specifically illustrated in Figure 7, an opening of an end part of the second recess 161 in the width direction Dw is closed by the second cover 162, and an opening of another part of the second recess 161 is open on one side of the second element 16 in the assembly direction Du.

[0039] The second cover 162 forms part of the second part 12B and extends along the longitudinal direction Dd. The second cover 162 is connected to the second recess 161 such that the opening of the end part of the second recess 161 in the lateral direction Dw is covered by the second cover 162. The section of the second cover 162 that covers the second recess 161 forms an intersecting section 162a. The first fluid path 121 and the second fluid path 122 are offset and intersect with the intersecting section 162, which separates them. In other words, the intersecting section 162a acts as a partition separating the first intermediate flow path section 121c and the second intermediate flow path section 122c.

[0040] The other side of the second cover 162, in the assembly direction Du, is connected to the first cylinder 163 and the second cylinder 164. In particular, the second cover 162 has one end in the longitudinal direction Dd that is connected to the first cylinder 163, and the other end in the longitudinal direction Dd that is connected to the second cylinder 164.

[0041] The first cylinder 163 is the rectangular, tubular part that forms leg 12C. The first cylinder 163 is connected to the second cover 162 and projects from the other side of the second cover 162 in the assembly direction Du. The first cylinder 163 has an opening on the other side of the second element 16 in the assembly direction Du, and the opening is connected to the thermal device SD. The first connection 121a is formed inside the first cylinder 163. The first connection 121a is open on the other side of the second component 16 in the assembly direction Du.

[0042] The second cylinder 164 is the rectangular, tubular part that forms leg 12D. The second cylinder 164 is connected to the second cover 162 and projects from the other side of the second cover 162 in the assembly direction Du. The second cylinder 164 has an opening on its other side in the assembly direction Du, and this opening is connected to the valve assembly VD. The second port 121b is formed inside the second cylinder 164. The second port 121b is open on the other side of the second element 16 in the assembly direction Du.

[0043] Furthermore, the other side of the second recess 161 in the assembly direction Du is connected to the third cylinder 165 and the fourth cylinder 166. In particular, one end of the second recess 161 in the width direction Dw is connected to the third cylinder 165, and another end of the second recess 161 in the width direction Dw is connected to the fourth cylinder 166.

[0044] The third cylinder 165 is the rectangular, tubular part that forms leg 12E. The third cylinder 165 is connected to the second recess 161 and projects from the other side of the second recess 161 in the assembly direction Du. The third cylinder 165 has an opening on its other side in the assembly direction Du, and this opening is connected to the pumping device PD. The third port 122a is formed inside the third cylinder 165. The third port 122a is open on the other side of the third cylinder 165 in the assembly direction Du.

[0045] The fourth cylinder 166 is the rectangular tubular part that forms leg 12F. The fourth cylinder 166 is connected to the second recess 161 and projects from the other side of the second recess 161 in the assembly direction Du. The fourth cylinder 166 has an opening on its other side in the assembly direction Du, and this opening is connected to the valve assembly VD. The fourth port 122b is formed inside the fourth cylinder 166.

[0046] In particular, the fourth cylinder 166 is connected to a section of the second recess 161, which is covered by the intersection section 162a of the second cover 162. Consequently, the fourth connection 122b is open away from the first element in the assembly direction Du and allows the intersection section 162a to be exposed to an outside of the second element 116 in the assembly direction Du through the fourth connection 122b.

[0047] The second element 16 with the above configuration is the molded part in which the second recess 161, the second cover 162, the first cylinder 163, the second cylinder 164, the third cylinder 165, and the fourth cylinder 166 are formed together. Since the second element 16 does not contain any sections that are opposite each other in the assembly direction Du, the second element 16 has a shape without undercuts, so that the mold can be removed in the assembly direction Du.

[0048] As in Fig. As illustrated in Figure 8, the structure 12 of the device for forming the fluid path 10 is assembled by joining and connecting the first element 14 and the second element 16 in the assembly direction Du. The first element 14 and the second element 16 are joined together by one of the following methods: gluing, welding, or melting. Specifically, the structure 12 is formed by joining the first element 14 and the second element 16 with an adhesive GL.

[0049] However, it is desirable that a method used to combine the first element 14 and the second element 16 be determined according to the constituents of the first element 14 and the second element 16.

[0050] If, for example, the first element 14 and the second element 16 are made of a resin material with poor wettability, bonding them with adhesive GL may result in insufficient adhesive strength and inadequate heat resistance. In this case, it is desirable, for example, to join the first element 14 and the second element 16 by welding. This ensures sufficient adhesive strength and heat resistance. Furthermore, it is expected to reduce the risk of volatile organic compounds being released during the drying of adhesive GL and the generation of toxic gases during combustion of adhesive GL.

[0051] If the first element 14 and the second element 16 are made of a metallic material, it is desirable to join them by melting. This ensures sufficient adhesive strength and heat resistance. Furthermore, it is expected to reduce the risk of releasing volatile organic compounds during the drying of the adhesive GL and the generation of toxic gases during combustion of the adhesive GL.

[0052] In the structure 12 thus obtained, part of the first fluid path 121 and part of the second fluid path 122 are offset in the assembly direction Du and intersect.

[0053] The first intermediate flow path section 121c of the first fluid path 121 is enclosed by the first recess 141 and the second cover 162. The first recess 141 is formed in the first element 14, and the second cover 162 is formed at a position opposite the first recess 141 in the second element 16. The second intermediate flow path section 122c of the second fluid path 122 is enclosed by the second recess 161, the first cover 142, and the intersection section 162a. The second recess 161 is formed in the second element 16, the first cover 142 is formed at a position opposite the second recess 161 in the first element 14, and the intersection section 162a is formed in the second cover 162.The first intermediate flow path section 121c and the second intermediate flow path section 122c are separated by the intersection section 162a, so they are not connected. Consequently, the first fluid path 121 and the second fluid path 122 are configured as independent flow paths.

[0054] In this embodiment, the first fluid path 121 corresponds to a “first flow path” which is one of two adjacent fluid paths arranged on one side in the assembly direction Du, and the second fluid path 122 corresponds to a “second flow path” which is the other of the two adjacent fluid paths arranged on the other side in the assembly direction Du.

[0055] Fig. Figures 9 to 11 are explanatory diagrams describing a distributor MF, which serves as a comparative example for the flow path forming device 10. The distributor MF, according to the comparative example, has an external shape that is essentially cross-shaped in planar view. For simplicity, a component of the distributor MF that corresponds to a component of the flow path forming device 10 is assigned the same reference numeral as that assigned to the component of the flow path forming device 10.

[0056] As in Fig. As illustrated in Figure 9, the distributor MF is formed by combining a first part 12A, which extends linearly in a longitudinal direction Dd, and a second part 12B, which extends linearly in a lateral direction Dw over the first part 12A.

[0057] As in Fig. As illustrated in Figure 10, in the distributor MF the legs 12E and 12F, which are provided at opposite ends of the second part 12B, are arranged such that they do not overlap two legs 12C and 12D, which are provided at opposite ends of the first part 12A in an extension direction of the first part 12A.

[0058] In distributor MF, a first intermediate flow path section 121c of a first fluid path 121 is formed within the first part 12A, and a first connection 121a is connected within leg 12C, and a second connection 121b is formed within leg 12D. Furthermore, in distributor MF, a second intermediate flow path section 122c of a second fluid path 122 is formed within the second part 12B, and a third connection 122a is formed in leg 12E, and a fourth connection 122b is formed in leg 12F.

[0059] In the manifold MF, the two rectangular, tubular parts forming the fluid paths 121 and 122 are arranged side by side by a mounting direction Du, specifically at the point where the first part 12A and the second part 12B intersect. Consequently, three or more elements are required to form the manifold MF due to manufacturing limitations and the like. As shown in Fig. As illustrated in Figure 11, the assembly of the MF manifold can be achieved, for example, by combining and connecting three elements: an upper part Pu, a lower part Pd, and a middle part Pm. However, if three or more elements are used to form the MF manifold, the number of connections between the elements can increase. Therefore, there are concerns regarding fluid leakage due to the increased number of connections and the increased cost due to the increased number of parts.

[0060] According to the flow path formation device 10 of the present embodiment, at least parts of the first fluid path 121 and the second fluid path 122, which are adjacent to each other, are offset and intersect due to the connection of the two separate elements, the first element 14 and the second element 16. Accordingly, the number of joined elements can be reduced, and the flow paths can be offset and intersect independently of each other. This reduces fluid leakage from a connection between the elements. Furthermore, a cost reduction can be expected due to the small number of parts.

[0061] Furthermore, the flow path formation device 10 in the present embodiment includes the following features. (1) In particular, the first fluid path 121 is enclosed by the first recess 141 and the second cover 162. The first recess 141 is provided on the first element 14 and is open on the other side of the first element 14 in the assembly direction Du. The second cover 162 is located at the position of the second element 16 facing the first recess 141. The second fluid path 122 is enclosed by the second recess 161, the first cover 142, and the section 162a forming an intersection. The second recess 161 is provided on the second element 16 and is open on one side of the second element 16 in the assembly direction Du. The first cover 142 is located at the position of the first element 14 facing the second recess 161.The intersection section 162a of the second cover 162 is located where the first fluid path 121 and the second fluid path 122 are offset and intersect independently. The first fluid path 121 and the second fluid path 122 are separated by the intersection section 162a. The first element 14 is the molded part in which the first recess 141 and the first cover 142 are formed together. The second element 16 is the molded part in which the second recess 161 and the second cover 162 are formed together. Accordingly, the structure in which at least parts of the adjacent fluid paths are offset from each other and intersect can be realized by joining the two separate elements, the first element 14 and the second element 16. (2) The first fluid path 121 includes the first port 121a and the second port 121b, through which fluid can flow into and out of the first fluid path 121 from and to an external device. The first fluid path 121 includes the first intermediate flow path section 121c, which connects the two port openings. The second fluid path 122 includes the third port 122a and the fourth port 122b, through which fluid can flow into and out of the second fluid path 122 from and to the external devices. The second fluid path 122 includes the second intermediate flow path section 122c, which connects the two ports. Furthermore, adjacent portions of the first fluid path 121c and the second fluid path 122c are offset in the assembly direction Du and intersect.Accordingly, it can be avoided that the first flow path 121c and the second flow path 122c, which are adjacent to each other, interfere with each other, and the packing density of the first flow path 121c and the second flow path 122c can be increased. (3) If the intersection section 162a of the second element 16 and the second bottom wall 161a of the second recess 161 overlap in the assembly direction Du, a process for manufacturing the second element 16 may become complicated due to a manufacturing constraint, such as an undercut.

[0062] Therefore, the second element 16 of the present embodiment has an opening that allows the intersection section 162a to be exposed via the fourth connection point 122b of the second fluid path 122 and a portion of the second intermediate flow path 122c from the other side of the second element 16 in the assembly direction Du to the outside of the second element 16. Since, as described above, the intersection section 162a is continuously connected to the outside of the second element 16 via the fourth connection 122b with the second flow path 122c from the other side of the second element 16 in the assembly direction Du, the reduction in productivity of the second element 16 due to a manufacturing constraint such as an undercut can be mitigated. (4) The third port 122a of the second fluid path 122 is open on the other side of the second element 16 in the assembly direction Du. Since, as described above, a pair of ports 122a and 122b of the second fluid path 122 is open in the assembly direction Du, it can be prevented that the pair of ports 122a and 122b leads to a manufacturing constraint, such as an undercut. (5) A pair of ports 121a and 121b of the first fluid path 121 of the second element 16 are open in the assembly direction Du. As described above, since the pair of ports 121a and 121b of the first fluid path 121 is open in the assembly direction Du, it is prevented that the pair of ports 121a and 121b presents a manufacturing constraint such as an undercut. (6) If the first element 14 and the second element 16 are joined by mechanical fastening using fasteners such as bolts and screws, fasteners and sealing materials are required. Therefore, the number of elements increases.

[0063] In contrast, in structure 12 of the present embodiment, the first element 14 and the second element 16 are joined together by one of the following methods: gluing, welding, or melting. Since fasteners such as bolts and screws, as well as sealing materials, can be omitted and the number of components reduced, the costs can be correspondingly lowered.

[0064] (7) The fluid flowing through the first fluid path 121 and the second fluid path 122 is the coolant. The flow path forming device 10 of the present embodiment can reduce coolant leakage in the structure if at least parts of the first fluid path 121 and the second fluid path 122, which are adjacent to each other, are offset and cross each other independently. Modification of the first embodiment

[0065] In the aforementioned first embodiment, the flow path formation device 10 of the present disclosure is described in detail. However, the above description is merely an example. The first embodiment is not limited to this description and can be modified, for example, as follows. First modification

[0066] As in Fig. 12 and Fig. As illustrated in Figure 13, the flow path formation device 10 can, for example, include a structure in which a leg 12E is provided not on a second element 16, but on a first element 14. The leg 12E can project from one side of the first element 14 in the assembly direction Du. In this case, a third port 122a of a second fluid path 122 is open on one side of the first element 14 in the assembly direction Du. This modification can also prevent a pair of ports 122a and 122b from being affected by manufacturing constraints such as undercutting. Second modification

[0067] As in Fig. 14 and Fig. As illustrated in Figure 15, a flow path formation device 10 can, for example, include a structure in which the legs 12C and 12E are provided not on a second element 16, but on a first element 14. The legs 12C and 12E can project from one side of the first element 14 in the assembly direction Du. In this case, a first port 121a of a first fluid path 121 is open on one side of the first element 14 in the assembly direction Du. Additionally, a third port 122a of a second fluid path 122 is open on one side of the first element 14 in the assembly direction Du. This modification can also prevent a pair of ports 122a and 122b from being affected by manufacturing constraints such as undercutting.

[0068] In the flow path formation device 10, at least one of the legs 12C, 12D and 12E can, for example, not be provided on the second element 16, but on the first element 14 and project from one side of the first element 14 in the assembly direction Du. Third modification

[0069] A flow path formation device 10 can be applied to a valve device VD other than five-way valves. As shown in Fig. As illustrated in Figure 16, the flow path forming device 10 can, for example, be applied to a valve device VD, which is a ten-way valve with ten ports P1 to P10. An external device connected to the flow path forming device 10 is not limited to a pump device PD, the valve device VD, and a thermal device SD, but can also be a device other than these devices PD, VD, and SD. Second embodiment

[0070] Next, a second embodiment will be described with reference to Fig. Sections 17 to 24 are described. In the present embodiment, mainly parts that differ from the first embodiment are described.

[0071] Fig. Figure 17 is the schematic diagram illustrating part of a flow path formation device 10 according to the second embodiment. As shown in Fig. Figure 17 illustrates a structure 12, which forms the flow path formation device 10, containing six fluid paths: a first fluid path 123, a second fluid path 124, a third fluid path 125, a fourth fluid path 126, a fifth fluid path 127, and a sixth fluid path 128. Fig. In Figure 17 and other drawings, the solid arrow corresponding to each of the fluid paths 123 to 128 gives an example of a direction in which the fluid flows in each of the fluid paths 123 to 128.

[0072] The first fluid path 123 includes a first port 123a connected to an external device not illustrated, a second port 123b connected to a valve device VD, and a first intermediate flow path section 123c connecting the first port 123a and the second port 123b.

[0073] The second fluid path 124 includes a third port 124a and a fourth port 124b, which are connected to an external device not illustrated, and a second intermediate flow path section 124c, which connects the third port 124a and the fourth port 124b.

[0074] The third fluid path 125 includes a fifth port 125a connected to an external device not illustrated, a sixth port 125b connected to the valve device VD, and a third intermediate flow path section 125c connecting the fifth port 125a and the sixth port 125b.

[0075] The fourth fluid path 126 includes a seventh port 126a connected to the valve device VD, an eighth port 126b connected to an external device not illustrated, and a fourth intermediate flow path section 126c connecting the seventh port 126a and the eighth port 126b.

[0076] The fifth fluid path 127 includes a ninth port 127a connected to the valve device VD, a tenth port 127b connected to an external device not illustrated, and a fifth intermediate flow path section 127c connecting the ninth port 127a and the tenth port 127b.

[0077] The sixth fluid path 128 includes an eleventh port 128a connected to the valve device VD, a twelfth port 128b connected to an external device not illustrated, and a sixth intermediate flow path section 128c connecting the eleventh port 128a and the twelfth port 128b.

[0078] In the first fluid path 123 and the second fluid path 124, a portion of the first intermediate flow path section 123c is adjacent to a portion of the second intermediate flow path section 124c. The portions of the first intermediate flow path section 123c and the second intermediate flow path section 124c are offset and intersect independently of each other in the assembly direction Du.

[0079] In the third fluid path 125 and the fourth fluid path 126, a portion of the third intermediate flow path section 125c borders a portion of the fourth intermediate flow path section 126c. The portions of the third intermediate flow path section 125c and the fourth intermediate flow path section 126c are offset and intersect independently of each other in the assembly direction Du.

[0080] As in Fig. 18 and Fig. As illustrated in Figure 19, the structure 12 is composed of two separate elements: a first element 18 and a second element 20, which are joined together in the predetermined assembly direction Du.

[0081] The first element 18 and the second element 20 are each made of a thermoplastic material. Both elements are injection-molded and designed without undercuts, allowing the mold to be removed in the assembly direction Du.

[0082] First, the first element 18 is described. The first element 18 is arranged on one side of the second element 20 in the assembly direction Du. As in Fig. 20 and Fig. As illustrated in Figure 21, the first element 18 includes a flat section 181 extending perpendicular to the assembly direction Du, a first projecting section 182 and a second projecting section 183 extending from one side of the first element 18 in the assembly direction Du, and a first connector 184 extending from one side of the first element 18 in the assembly direction Du.

[0083] The flat section 181 has a flat side on one side of the first element 18 in the assembly direction Du. Additionally, although not illustrated, several projections are formed on the other side of the flat section 181 in the assembly direction Du to abut and connect with the second element 20. These projections are not necessary and can be omitted.

[0084] The first projection section 182 is positioned at a location corresponding to the part of the second fluid path 124 that is offset and independently intersects the first fluid path 123. The first section of the projection 182, facing the second element 20, is recessed in the assembly direction Du towards one side of the first element 18.

[0085] The second section 183 of the projection is located at a position corresponding to the portion of the fourth flow path 126 that is offset and independently intersects the third fluid path 125. The section of the second projection 183 facing the second element 20 is recessed in the assembly direction Du towards one side of the first element 18.

[0086] The first connector 184 forms the tenth connection 127b of the fifth fluid path 127 and is located at one end of the fifth intermediate flow path section 127c. The first connector 184 is open on one side in the assembly direction Du.

[0087] The first element 18, constructed as described above, is a molded part in which the flat section 181, the first projecting section 182, the second projecting section 183, and the first connector 184 are formed together. Since the first element 18 does not contain any sections facing each other in the assembly direction Du, the first element 18 has a shape without undercuts, so that the mold can be removed in the assembly direction Du. In the present embodiment, the first projecting section 182 and the second projecting section 183 form a "first recess" formed on the first element 18 and open on the other side of the first element 18 in the assembly direction Du, and the flat section 181 forms a "first cover".Furthermore, in the present embodiment, the first projecting section 182 and the second projecting section 183 form a “first flow path section”, and the flat section 181 forms a “fourth flow path section”.

[0088] Next, the second element 20 is described, which is arranged on the other side of the first element 18 in the assembly direction Du. As in Fig. 21 and Fig. As illustrated in Figure 22, the second element 20 contains a base 21 with six flow path grooves 211 to 216, a first stage 22, a second stage 23 and second to twelfth connectors.

[0089] The base 21 has the six flow path grooves: a first flow path groove 211, a second flow path groove 212, a third flow path groove 213, a fourth flow path groove 214, a fifth flow path groove 215 and a sixth flow path groove 216.

[0090] The first flow path groove 211 is formed at the position corresponding to the first fluid path 123. The first flow path groove 211 extends towards the other side of the second element 20 in the assembly direction Du. The first flow path groove 211 contains the section that is open on one side of the second element 20 in the assembly direction Du.

[0091] The second flow path groove 212 is provided at the location corresponding to the second fluid path 124. The second flow path groove 212 is recessed towards the other side of the second element 20 in the assembly direction Du. The second flow path groove 212 is open on one side of the second element 20 in the assembly direction Du.

[0092] The third flow path groove 213 is formed at the position corresponding to the third fluid path 125. The third flow path groove 213 is recessed towards the other side of the second element 20 in the assembly direction Du. The third flow path groove 213 contains the section that is open on one side of the second element 20 in the assembly direction Du.

[0093] The fourth flow path groove 214 is formed at the position corresponding to the fourth fluid path 126. The fourth flow path groove 214 is open on the other side of the second element 20 in the assembly direction Du. The fourth flow path groove 214 is open on one side of the second element 20 in the assembly direction Du.

[0094] The fifth flow path groove 215 is formed at the position corresponding to the fifth fluid path 127. The groove of the fifth flow path 215 is recessed on the other side of the second element 20 in the assembly direction Du. The wall of the fifth flow path 215 includes the section that is open on one side of the second element 20 in the assembly direction Du.

[0095] The sixth flow path groove 216 is formed at the position corresponding to the sixth fluid path 128. The fourth flow path groove 216 is recessed on the other side of the second element 20 in the assembly direction Du. The sixth flow path groove 216 is open on one side of the second element 20 in the assembly direction Du.

[0096] The first stage 22 is located in a section of the second flow path groove 212, which intersects the first flow path groove 211. Specifically, the first stage 22 is arranged on a section of the second element 20 that is opposite the first section with projection 182. The first stage 22 projects from a base of the second flow path groove 212 toward one side of the second element 20 in the assembly direction Du and covers a section of the opening at an end portion of the first flow path groove 211. The first stage 22 acts as a partition separating the first intermediate flow path section 123c and the second intermediate flow path 124c. In the present embodiment, the first stage 22 forms an "intersection section" in which the first intermediate flow path section 123c and the second intermediate flow path section 124c are offset and intersect independently.

[0097] The second step 23 is arranged in the section of the fourth flow path groove 214 that intersects the third flow path groove 213. Specifically, the second step 23 is provided on the section of the second element 20 that is opposite the second projection 183. The second step 23 projects from a base of the fourth flow path groove 214 toward one side of the second element 20 in the assembly direction Du and covers a section of the opening at an end part of the third flow path groove 213. The second step 23 serves as a partition separating the third intermediate flow path section 125c and the fourth intermediate flow path 126c. In the present embodiment, the second step 23 forms an "intersection section" in which the third intermediate flow path section 125c and the fourth intermediate flow path section 126c are offset and intersect independently of each other.

[0098] The second to twelfth connectors are provided on the opposite side of the base 21 in the assembly direction Du. The second to twelfth connectors project from the opposite side of the second element 20 in the assembly direction Du, which faces away from one side of the second element 20 in the assembly direction Du. The second to twelfth connectors are open on the opposite side of the second element 20 in the assembly direction Du. The second to twelfth connectors are connected to an external device and the valve device VD on the opposite side of the second element 20 in the assembly direction Du. The valve device VD of the present embodiment has five ports P1 to P5 on the end face of the valve device VD, on which the flow path forming device 10 is provided.

[0099] The second connector forms the first port 123a of the first fluid path 123 and is located at the point corresponding to one end of the first intermediate flow path 123c. The second connector is connected to an external device. Although not illustrated, the first port 123a is open on the other side of the second element 20 in the assembly direction Du.

[0100] The third connector 24 forms the second port 123b of the first fluid path 123 and is located at the position corresponding to the other end of the first intermediate flow path 123c. The third connector 24 is connected to the first port P1 of the valve assembly VD. Specifically, the third connector 24 is located on the section of the valve assembly VD where the first stage 22 is located. The second port 123b has an opening on the opposite side of the first stage 22 in the assembly direction Du and allows the first stage 22, corresponding to the "intersection section," to be exposed through the opening to the outside of the second element 20.

[0101] The fourth and fifth connectors form the third port 124a and the fourth port 124b, respectively, and are located at positions corresponding to the opposite ends of the second intermediate flow path section 124c. The fourth and fifth connectors are connected to an external device. Although not illustrated, the third port 124a and the fourth port 124b are open in the mounting direction Du.

[0102] The sixth connector forms the fifth port 125a of the third fluid path 125 and is located at the position corresponding to one end of the third intermediate flow path section 125c. The fifth connector is connected to an external device. Although not illustrated, the fifth port 125a is open in the mounting direction Du.

[0103] The seventh connector 25 forms the sixth port 125b of the third fluid path 125 and is located at the opposite end of the third intermediate flow path section 125c. The seventh connector 25 is connected to the second port P2 of the valve assembly VD. Specifically, the seventh connector 25 is connected to the section of the third fluid path 125 where the second stage 23 is located. The sixth port 125b has an opening on the opposite side of the second stage 23 in the assembly direction Du, allowing the second stage 23, corresponding to the "intersection section," to be exposed through the opening to the outside of the second element 20.

[0104] The eighth connector 26 forms the seventh port 126a of the fourth fluid path 126 and is located at the position corresponding to one end of the fourth intermediate flow path section 126c. The eighth connector 26 is connected to the third port P3 of the valve assembly VD.

[0105] The ninth connector 26 forms the eighth port 126b of the fourth fluid path 126 and is located at the position corresponding to the other end of the fourth intermediate flow path section 126c. The ninth connector is connected to an external device. Although not illustrated, the seventh port 126a and the eighth port 126b are open in the mounting direction Du.

[0106] The tenth connector forms the ninth port 127a of the fifth fluid path 127 and is located at the position corresponding to one end of the fifth intermediate flow path section 127c. The tenth connector is connected to the fourth port P4 of the valve assembly VD. Although not illustrated, the ninth port 127a is open on the opposite side of the second element 20 in the assembly direction Du.

[0107] The eleventh connector forms the eleventh port 128a of the sixth fluid path 128 and is located at the position corresponding to one end of the sixth intermediate flow path section 128c. The eleventh connector is connected to the fifth port P5 of the valve assembly VD. Although not illustrated, the eleventh port 128a is open on the other side of the second element 20 in the assembly direction Du.

[0108] The twelfth connector forms the twelfth port 128b of the sixth fluid path 128 and is located at the position corresponding to the other end of the sixth intermediate flow path section 128c. The twelfth connector is connected to an external device. Although not illustrated, the twelfth port 128b is open in the mounting direction Du.

[0109] The second element 20, constructed as described above, is the molded part in which the base 21, the first stage 22, the second stage 23, and the second through twelfth connectors are formed together. Since the second element 20 does not contain any sections that face each other in the assembly direction Du, the second element 20 has a shape without undercuts, so that the mold can be removed in the assembly direction Du. In the present embodiment, the six flow path grooves 211 to 216 formed on the base 21 form a "second recess" in the second element 20, which is open on the other side of the second element 20 in the assembly direction Du. The first stage 22 and the second stage 23 form a "second cover".Furthermore, in the present embodiment, the six flow path grooves 211 to 216 formed at the base 21 form a “third flow path section”, wherein the first stage 22 and the second stage 23 form a “second flow path section”.

[0110] As in Fig. As illustrated in Figure 24, the structure 12 of the flow path formation device 10 is assembled by combining the first element 18 and the second element 20, as described above, and joining them in the assembly direction Du. The first element 18 and the second element 20 are joined together by one of the following methods: gluing, welding, and melting.

[0111] The structure 12 formed as above has the following configuration: parts of the first intermediate flow path section 123c and the second intermediate flow path section 124c are offset in the assembly direction Du and intersect independently of each other. Furthermore, in structure 12, parts of the third intermediate flow path section 125c and the fourth intermediate flow path section 126c are offset in the assembly direction Du and intersect independently of each other.

[0112] The first intermediate flow path section 123c is enclosed by the first flow path groove 211 of the second element 20 and a section of the flat section 181 of the first element 18, which is opposite the first flow path groove 211. The second intermediate flow path section 124c has a portion enclosed by the first projecting section 182 of the first element 18 and the first step 22 of the second element 20, which is opposite the first recess 182. The remaining portion of the second intermediate flow path section 124c is enclosed by the second flow path groove 212 of the second element 20 and the portion of the flat section 181 of the first element 18 that faces the second flow path groove 212.The first intermediate flow path section 123c and the second intermediate flow path section 124c are separated by the first stage 22, which forms the intersection section, so that they are not connected to each other. Thus, the first fluid path 123 and the second fluid path 124 are each designed as an independent flow path.

[0113] The third intermediate flow path section 125c is enclosed by the third flow path groove 213 of the second element 20 and the portion of the flat section 181 of the first element 18 that faces the third flow path groove 213. The fourth intermediate flow path section 126c has a portion enclosed by the second projecting section 182 of the first element 18 and the second step 23 of the second element 20. The second step 23 faces the second recess 183. The remaining portion of the fourth intermediate flow path section 126c is enclosed by the second flow path groove 212 of the second element 20 and the portion of the flat section 181 of the first element 18 that faces the second flow path groove 212.The third intermediate flow path section 125c and the fourth intermediate flow path section 126c are separated from each other by the second stage 23, which forms the intersection section, so that they are not connected to each other. Thus, the third fluid path 125 and the fourth fluid path 126 are each designed as an independent flow path.

[0114] In the present embodiment, the first intermediate flow path section 123c and the third intermediate flow path section 125c correspond to a "second flow path", which is one of the intermediate flow paths adjacent to each other in the assembly direction Du. Furthermore, the second intermediate flow path 124c and the fourth intermediate flow path 126c correspond to a "first flow path", which is another of the intermediate flow paths in the direction Du.

[0115] The remaining features correspond to those of the first embodiment. The flow path formation device 10 in the present embodiment can produce the same effect as the effect achieved by the designs that correspond to or are equivalent to the first embodiment. Other embodiments

[0116] The representative embodiments of the present disclosure have been described above, but the present disclosure is not limited to the embodiments described above. For example, it can be modified in various ways as follows.

[0117] In the first embodiment, part of the first fluid path 121 is defined by the first recess 141 of the first element 14 and a second cover 162 of the second element 16, but the flow path forming device 10 is not limited to this example. For instance, as shown in the Fig. 25 and Fig.Figure 26 illustrates a flow path forming device 10 having a first fluid path 121 defined by a first recess 167 and a second cover 143. The first recess 167 is formed in a second element 16 and is open on one side of the second element 16 in a mounting direction Du, and the second cover 143 is formed in a first element 14 at a position opposite the first recess 167. In the flow path forming device 10 with the configuration described above, part of the bottom of the first recess 167 forms an intersection section 167a. In the first element 14 in this example, a first cover 142 and the second cover 143 are seamlessly and continuously connected to each other, but it is not limited to this structure.For example, in the first element 14, the first cover 142 and the second cover 143 can have a positional relationship with a displacement in the assembly direction Du, resulting in a step formed between the first cover 142 and the second cover 143. Furthermore, in the second element 16 in this example, a first recess 167 and the second recess 161 are seamlessly connected, but this structure is not limited to this. For example, in the second element 16, the first recess 167 and the second recess 161 can have a positional relationship with a displacement in the assembly direction Du, resulting in a step formed between the first recess 167 and the second recess 161. In this example, the first recess 167 forms a "second flow path section" and the first cover 142 forms a "first flow path section".

[0118] In the flow path forming device 10 of the above embodiments, a flow path is formed by a recess and a cover that closes an opening of the recess, but it is not limited to this structure. For example, in the flow path forming device 10, the flow path can be formed by a combination of L-shaped sections or by a V-shaped section and a cover that closes an opening of the V-shaped section. Furthermore, in the flow path forming device 10, the flow path can be formed by a recess and a cover, wherein the recess is formed in one of the first elements 14 or second elements 16 and the cover is formed in the other of the first or second elements.

[0119] The flow path formation device 10 in the above embodiments has offset and independently intersecting flow paths, and the flow paths have connection openings that are open in the assembly direction Du. However, it is not limited to this structure. In the flow path formation device 10, the offset and independently intersecting flow paths can have connection openings that are open in a direction other than the assembly direction Du.

[0120] In the flow path forming device 10 of the above embodiments, the offset and independently intersecting flow paths are each connected to an external device via a pair of connection ports, but it is not limited to this structure. For example, in the flow path forming device 10, one of the offset and independently intersecting flow paths may have one end connected to an external device and another end that is closed or open without being connected to an external device. In this configuration, the port is not required and may be omitted.

[0121] In the above embodiments, the flow path forming device 10 has elements that form the structure 12, and the elements are connected by one of the following joining methods: gluing, welding, and melting, but it is not limited to these methods. In the flow path forming device 10, at least some of the elements that form the structure 12 can be connected by mechanical fastening using fasteners such as bolts and screws.

[0122] In the flow path formation device 10 of the aforementioned embodiments, a coolant can flow within the flow path formed in the structure 12, but it is not limited to this configuration. For example, fluids other than a coolant, such as a gas and an oil, can also flow within the flow paths in the flow path formation device 10.

[0123] In the flow path formation device 10 of the above embodiments, the elements comprising the structure 12 are formed by injection molding using a mold. However, the manufacturing process for the elements is not limited to injection molding, and the elements can also be formed, for example, by compression molding.

[0124] The structure 12 of the flow path formation device 10 of the aforementioned embodiments consists of a single component, namely the structure 12, but is not limited to this configuration. For example, the structure 12 of the flow path formation device 10 can consist of several interconnected components. In this case, it is possible to realize a structure in which three or more flow paths are offset and intersect independently of one another. The multiple components of the structure 12 can have the same flow path structure or different flow path structures. Furthermore, the flow path formation device 10 can, for example, consist of the structure 12 connected to an object other than the structure 12 itself.

[0125] In the embodiments described above, the flow path formation device 10 is applied to a fluid control system 1 installed in an electric vehicle, but the scope of application of the flow path formation device 10 is not limited to the case mentioned above. For example, the flow path formation device 10 can be applied to a system installed in a vehicle with an internal combustion engine as its power source, as well as to a system used in a factory or a house.

[0126] In the embodiments described above, the elements of the embodiments are of course not necessarily essential, except in cases where these elements are expressly stated to be particularly essential, in cases where these elements are generally considered to be obviously essential, and in similar cases.

[0127] In the embodiments described above, in cases where numerical values, such as the numbers, numerical values, quantities and ranges of configuration elements of the embodiments are mentioned, the specific numbers are not limiting, except in cases where, for example, it is clearly stated that the numerical values ​​are particularly important, and in cases where the numerical values ​​are obviously limited to the specific numbers, and the like.

[0128] In the embodiments described above, the shapes, positional relationships, and the like of the configuration elements and the like, when mentioned, are not restrictive, except where this is clearly stated, and in cases where the specific shapes, positional relationships, and the like are fundamentally restrictive. Aspects of the Present Revelation Aspect 1

[0129] A flow path formation device comprises a structure (12) with multiple independent fluid paths (121, 122, 123, 124, 125, 126, 127, 128). The multiple fluid paths include adjacent fluid paths that are abutting each other, offset in a predetermined assembly direction (Du), and intersecting independently. The structure is composed of two separate elements: a first element (14, 18) and a second element (16, 20), which are combined and connected in the assembly direction. Aspect 2

[0130] In the flow path formation device according to Aspect 1, one of the adjacent fluid paths is designated as the first flow path and another of the adjacent fluid paths as the second flow path. At least part of the first flow path is enclosed by a first flow path section (141, 182, 183, 143) of the first element and by a second flow path section (162, 22, 23, 167) of the second element. The first flow path section faces the second flow path section in the assembly direction. The second flow path is enclosed by a third flow path section (161, 211, 212, 213, 214, 215, 216) of the second element, a fourth flow path section (142, 181) of the first element, and an intersection section (162a, 22, 23, 167a) of the second flow path section. The fourth flow path section faces the third flow path section in the assembly direction.The intersection section is positioned where the first and second flow paths are offset and intersect independently. The first and second flow paths are separated by the intersection section. The first element is a molded part in which the first and fourth flow path sections are formed together. The second element is a molded part in which the second and third flow path sections are formed together. Aspect 3

[0131] In the flow path formation device according to aspect 2, the first flow path section of the first element is a first recess (141, 182, 183) that is open towards the second element. The second flow path section of the second element is a second cover (161, 22, 23) that is opposite the first recess. The third section of the second element is a second recess (161, 211, 212, 213, 214, 215, 216) that is open towards the first element. The fourth flow path section of the first element is a first cover (142, 181) that faces the second recess. Aspect 4

[0132] In the flow path formation device according to aspect 2, the second flow path section of the second element is a first recess (167) open towards the first element. The first flow path section of the first element is a first cover (143) facing the first recess. The third flow path section of the second element is a second recess (161) open towards the first element. The fourth flow path section of the first element is a second cover (142) facing the second recess. Aspect 5

[0133] In the flow path formation device according to one of aspects 2 to 4, each of the adjacent fluid paths contains a pair of connecting ports (121a, 122a, 123a, 124a, 125a, 126a, 127a, 128a, 121b, 122b, 123b, 124b, 125b, 126b, 127b, 128b) that allow a fluid to flow from a fluid path into or out of an external device (VD, PD, SD), and an intermediate flow path section (121c, 122c, 123c, 124c, 125c, 126c, 127, 128c) that connects the pair of connecting ports. Interflow path sections of the adjacent fluid paths, which lie next to each other, are offset in the assembly direction and cross each other independently. Aspect 6

[0134] In the flow path formation device according to aspect 5, the second element contains one of the two connections of the second flow path. One of the two connections is open away from the first element and allows the section forming the intersection to be exposed outwards towards the second element via this one of the two connections. Aspect 7

[0135] In the flow path formation device according to aspect 6, the first element or the second element contains another of the two connecting ports of the second flow path, which is open away from the second element or the first element. Aspect 8

[0136] In the flow path formation device according to one of aspects 5 to 7, the first element or the second element contains one of the two ports of the first flow path, which is open away from the second element or the first element. The first element or the second element contains another of the two ports of the first flow path, which is open away from the second element or the first element. Aspect 9

[0137] In the flow path formation device according to one of aspects 1 to 8, the first element and the second element of the structure are connected to each other by one of the joining methods: gluing, welding or melting. Aspect 10

[0138] In the flow path formation device according to one of aspects 1 to 9, a fluid flowing through the multiple flow paths is a coolant. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP 2023-062944

[0001] CN 115388193 A

[0004]

Claims

[1] Flow path formation device comprising: a structure (12) with several independent fluid paths (121, 122, 123, 124, 125, 126, 127, 128), wherein the multiple fluid paths contain adjacent fluid paths that lie next to each other, are offset in a predetermined assembly direction (Du) and intersect independently of each other, and the structure is composed of two separate elements: a first element (14, 18) and a second element (16, 20) which are combined and connected in the assembly direction. [2] Flow path formation device according to claim 1, wherein one of the adjacent fluid paths is referred to as the first flow path and another of the adjacent fluid paths is referred to as the second flow path, at least part of the first flow path is enclosed by a first flow path section (141, 182, 183, 143) of the first element and a second flow path section (162, 22, 23) of the second element, the first flow path section in the assembly direction is opposite the second flow path section, the second flow path is enclosed by a third flow path section (161, 211, 212, 213, 214, 215, 216) of the second element, a fourth flow path section (142, 181) of the first element and a section forming the intersection (162a, 22, 23, 167a) of the second flow path section, the fourth flow path section in the assembly direction is opposite the third flow path section, the section forming the intersection is provided at a position where the first flow path and the second flow path are offset and intersect independently of each other, the first flow path and the second flow path are separated by the section forming the intersection point, the first element is a molded part in which the first flow path section and the fourth flow path section are formed together, and the second element is a molded part in which the second flow path section and the third flow path section are formed together. [3] Flow path formation device according to claim 2, wherein the first flow path section of the first element is a first recess (141, 182, 183) that is open towards the second element, the second flow path section of the second element is a second cover (161, 22, 23) opposite the first recess, the third flow path section of the second element is a second recess (161, 211, 212, 213, 214, 215, 216) that is open towards the first element, and the fourth flow path section of the first element is a first cover (142, 181) which faces the second recess. [4] Flow path formation device according to claim 2, wherein the second flow path section of the second element is a first recess (167) that is open towards the first element, the first flow path section of the first element is a first cover (143) facing the first recess, the third flow path section of the second element is a second recess (161) that is open towards the first element, and the fourth flow path section of the first element is a second cover (142) facing the second recess. [5] Flow path formation device according to one of claims 2 to 4, wherein each of the adjacent fluid paths a pair of connection ports (121a, 122a, 123a, 124a, 125a, 126a, 127a, 128a, 121b, 122b, 123b, 124b, 125b, 126b, 127b, 128b) which allow a fluid to flow into or out of a fluid path from an external device (VD, PD, SD), and an intermediate flow path section (121c, 122c, 123c, 124c, 125c, 126c, 127, 128c) that connects the pair of connection ports, and the intermediate flow path sections of the adjacent fluid paths, which lie next to each other, are offset in the assembly direction and cross each other independently. [6] Flow path formation device according to claim 5, wherein the second element contains one of the two connection ports of the second flow path, and one of the two connecting terminals is open facing away from the first element and allows the section forming the intersection point to protrude outwards from the second element via one of the two connecting terminals. [7] Flow path formation device according to claim 6, wherein the first element or the second element includes a further of the two connecting ports of the second flow path, which is open away from the second element or from the first element. [8] Flow path formation device according to claim 5, wherein the first element or the second element contains one of the two connecting ports of the first flow path, which is open away from the second element or the first element, and the first element or the second element contains another of the two connecting ports of the first flow path, which is open away from the second element or the first element. [9] Flow path formation device according to claim 1 or 2, wherein the first element and the second element of the structure are connected to each other by gluing, welding or fusing. [10] Flow path formation device according to claim 1 or 2, wherein a fluid flowing through the multiple fluid paths is a coolant.

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