Cooling module

Abstract

To provide a cooling module capable of adjusting pressure in a flow passage through which fluid flows.SOLUTION: A cooling module includes a manifold 1 internally including a first flow passage L1 through which a first fluid F1 flows and a second flow passage L2 through which a second fluid F2 flows, and a valve 3 attached to the manifold 1 and controlling circulation of the first fluid F1 and the second fluid F2. The manifold 1 includes a pressure adjusting flow passage 120 for adjusting pressure between the first flow passage L1 and the second flow passage L2.SELECTED DRAWING: Figure 7

Description

[Technical field]

[0001] The present invention relates to a cooling module. [Background technology]

[0002] As a technique for cooling a motor, a battery, etc. equipped in a vehicle such as an electric vehicle, for example, Patent Document 1 discloses a thermal management system including a refrigerant loop system, a motor liquid cooling loop system, an air conditioner liquid cooling loop system, and a battery liquid cooling loop system. In the thermal management system disclosed in Patent Document 1, a multifunction valve including an expansion kettle is provided in the motor liquid cooling loop system. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2022-545035 Summary of the Invention [Problem to be solved by the invention]

[0004] In the thermal management system disclosed in Patent Document 1, the motor liquid cooling loop system is provided with a multifunction valve including an expansion kettle, while the battery liquid cooling loop system is not provided with an expansion kettle. Therefore, even if the fluid flowing through the battery liquid cooling loop system thermally expands, the battery liquid cooling loop system cannot adjust the pressure (release the pressure). As a result, the flow rate of the pump provided on the battery liquid cooling loop system side becomes unstable, and there is a risk that the cooling capacity of the battery liquid cooling loop system side will decrease.

[0005] The present invention has been made in view of the above-mentioned problems, and has an object to provide a cooling module capable of adjusting the pressure inside a flow path through which a fluid flows. [Means for solving the problem]

[0006] In view of the above, a characteristic configuration of a cooling module includes a manifold having therein a first flow path through which a first fluid flows and a second flow path through which a second fluid flows, and a valve attached to the manifold and controlling the flow of the first fluid and the second fluid, and the manifold has a pressure adjustment flow path that adjusts the pressure between the first flow path and the second flow path.

[0007] According to this characteristic configuration, the manifold is provided with a pressure adjustment flow path for adjusting the pressure balance, so that it is possible to adjust (release) the pressure between the first flow path and the second flow path. Moreover, since the manifold is provided with a pressure adjustment flow path, the amount of piping required can be reduced compared to when a separate pressure adjustment flow path is provided outside the cooling module. [Brief description of the drawings]

[0008] [Figure 1] 1 is a circuit diagram showing a part of a cooling system including a cooling module according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view showing the configuration of a cooling module according to the embodiment. [Diagram 3] FIG. 2 is an exploded perspective cross-sectional view showing a manifold according to an embodiment. [Figure 4] FIG. 4 is a plan view showing a second wall portion according to the embodiment. [Diagram 5] FIG. 2 is a diagram showing a configuration of a valve according to an embodiment. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI shown in FIG. 5. [Figure 7] FIG. 2 is a cross-sectional view showing a portion of a valve and a manifold according to an embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of a cooling module according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the following embodiment, and various modifications are possible without departing from the spirit and scope of the present invention.

[0010] [Cooling system] First, the configuration of a cooling system A including a cooling module 100 will be described with reference to Fig. 1. Fig. 1 is a circuit diagram showing a part of the cooling system A including the cooling module 100. The cooling system A is a system mounted on an electric vehicle (hereinafter referred to as an "electric vehicle") that runs on electricity, and cools devices to be cooled (such as an inverter / motor R1 and a battery R2) mounted on the electric vehicle. The inverter / motor R1 is a driving source that operates when supplied with electric power, and the battery R2 stores electric power and supplies the power to the inverter / motor R1 as needed. Electric vehicles include, for example, hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles (PHEVs), battery electric vehicles (BEVs), and fuel cell electric vehicles (FCEVs).

[0011] 1, the cooling system A includes a pump 2, a valve 3, a radiator 4, a chiller 5, and a fluid flow path L through which a fluid F flows. The fluid F is a cooling fluid such as long-life coolant (LLC). However, the fluid F is not limited to cooling fluids such as long-life coolant (LLC), and may be a refrigerant such as insulating oil of a paraffin type or the like, hydrofluorocarbon (HFC), hydrofluoroolefin (HFO), or the like.

[0012] The pump 2 pumps the fluid F to circulate the fluid F within the fluid flow path L. The pump 2 is, for example, an electric water pump. The valve 3 controls the circulation of the fluid F. The valve 3 is a rotary valve that includes a rotating shaft 31 and a valve body 32 that rotates about the rotating shaft 31 (see FIG. 2) and rotates about an axis AX of the rotating shaft 31. The radiator 4 and chiller 5 adjust the temperature of the fluid F (for example, cool the fluid F when the temperature of the fluid F is equal to or higher than a specified temperature).

[0013] The pump 2, the valve 3, the radiator 4, the chiller 5, the inverter / motor R1, and the battery R2 are connected via a fluid flow path L. This forms a circulation circuit C in which a fluid F circulates. The circulation circuit C has a first circulation circuit C1 in which a fluid F circulates for adjusting (cooling) the temperature of the inverter / motor R1, and a second circulation circuit C2 in which a fluid F circulates for adjusting (cooling) the temperature of the battery R2. Hereinafter, the fluid F circulating in the first circulation circuit C1 will be referred to as the "first fluid F1", and the fluid flow path L constituting the first circulation circuit C1 will be referred to as the "first flow path L1". In addition, the fluid F circulating in the second circulation circuit C2 will be referred to as the "second fluid F2", and the fluid flow path L constituting the second circulation circuit C2 will be referred to as the "second flow path L2".

[0014] In this embodiment, the cooling system A includes two pumps 2 and two valves 3. Each of the two valves 3 is a rotary valve having a two-stage configuration in which two valve spaces (spaces through which the fluid F flows) are provided along the direction in which the axis AX of the rotary shaft 31 extends (hereinafter referred to as the "axial direction"). For example, the valve 3 is a multi-way valve such as a three-way valve that can switch the flow direction of the fluid F to three directions, or a four-way valve that can switch the flow direction of the fluid F to four directions. The circulation circuit C described with reference to FIG. 1 shows an example of a circulation circuit C to which one of the two pumps 2 is connected, and the first fluid F1 flowing through the first circulation circuit C1 and the second fluid F2 flowing through the second circulation circuit C2 flow through one of the two pumps 2. The first fluid F1 and the second fluid F2 may also flow through the other pump 2 of the two pumps 2.

[0015] In addition, the cooling system A further includes a reserve tank T capable of absorbing the thermal expansion of the fluid F, and in this embodiment, the reserve tank T is provided only in the first circulation circuit C1 (the second circulation circuit C2 does not include a reserve tank capable of absorbing the thermal expansion of the fluid F).

[0016] [Cooling module] Next, the configuration of the cooling module 100 will be described with reference to Figs. 2 to 4. Fig. 2 is an exploded perspective view showing the configuration of the cooling module 100. Fig. 3 is an exploded perspective cross-sectional view showing the manifold 1. In Fig. 3, the first housing 11 is cut along the Z direction. Fig. 4 is a view showing the second wall portion 112 of the manifold 1 as viewed along the Z1 direction.

[0017] 2, the cooling system A further includes a manifold 1 that includes a portion of the fluid flow path L (the first flow path L1 and the second flow path L2 described with reference to FIG. 1) therein. A pump 2 and a valve 3 are attached to the manifold 1, and are integrated to form a cooling module 100. In this embodiment, the cooling module 100 is formed by attaching (integrating) two pumps 2 and two valves 3 to the manifold 1.

[0018] [Manifold] The manifold 1 has a box shape and has a first housing 11 and a second housing 12. Hereinafter, the direction from the first housing 11 toward the second housing 12 will be referred to as the "Z1 direction," the opposite direction will be referred to as the "Z2 direction," and the Z1 direction and the Z2 direction will be collectively referred to as the "Z direction."

[0019] The first housing 11 and the second housing 12 include, for example, a resin as a material. The first housing 11 and the second housing 12 are joined and integrated by welding or the like to form the manifold 1. A part of the fluid flow path L is provided inside the manifold 1 by a groove formed in at least one of the first housing 11 and the second housing 12.

[0020] [First housing] 2 and 3, the first housing 11 has an accommodation space 11s (two accommodation spaces 11s in this embodiment) that accommodates a part (valve body 32) of the valve 3. The first housing 11 has, as walls that configure the accommodation space 11s, a cylindrical first wall portion 111 that faces the valve 3 (valve body 32) in the radial direction of the valve 3 (hereinafter referred to as the "radial direction DR"), and a disk-shaped second wall portion 112 (see FIGS. 3 and 4) that is provided on the side closer to the second housing 12 (in the Z1 direction as viewed from the valve 3 accommodated in the accommodation space 11s).

[0021] 3, the first wall portion 111 has a plurality of openings 11h. Each of the openings 11h connects the fluid flow path L (see FIG. 1) with the storage space 11s.

[0022] As shown in FIG. 4, the second wall portion 112 has an insertion hole portion 113, a hole portion 114, and a rib portion 115.

[0023] The insertion hole portion 113 is circular when viewed along the Z direction, and includes an insertion hole 113a through which the rotation shaft 31 (see FIG. 7) of the valve 3 is inserted, and a peripheral edge portion 113b that is provided in an annular shape so as to surround the insertion hole 113a. The peripheral edge portion 113b protrudes in the Z2 direction from the opposing surface 112a (see FIG. 3). The opposing surface 112a is a plane of the second wall portion 112 that faces the valve 3 (a plane of the second wall portion 112 in the Z2 direction).

[0024] The hole portion 114 is provided on the outer side of the peripheral portion 113b (separated from the peripheral portion 113b) in the radial direction DR. The hole portion 114 includes a plurality of holes 114a (four in this embodiment), and the second wall portion 112 is formed with four holes 114a. The longitudinal direction of each of the holes 114a is the circumferential direction of the valve 3 (hereinafter referred to as the "circumferential direction DC"). For this reason, the hole 114a will be referred to as the "long hole 114a" hereinafter. Note that each of the insertion hole 113a and the long hole 114a penetrates the second wall portion 112 in the Z direction (see FIG. 3).

[0025] 4, the four elongated holes 114a are provided at equal intervals along the circumferential direction DC. Specifically, the four elongated holes 114a are provided at intervals of a central angle of 90 degrees about the insertion hole 113a when viewed along the Z direction.

[0026] As shown in Fig. 3, the rib portion 115 has a plurality of ribs 115a protruding from the opposing surface 112a in the Z2 direction (the direction approaching the valve 3). In this embodiment, as shown in Fig. 4, the rib portion 115 has four ribs 115a, which are provided at equal intervals. More specifically, the four ribs 115a are provided at intervals of 90 degrees as viewed along the Z direction. That is, the four ribs 115a are provided radially from the insertion hole portion 113 as the center.

[0027] Each of the ribs 115a extends in a direction perpendicular to the Z direction (radial direction DR). Each of the ribs 115a extends such that one end is a peripheral portion 113b surrounding the insertion hole portion 113, and the other end is located inside the inner edge of the long hole 114a in the radial direction DR. Note that the four ribs 115a do not face any of the four long holes 114a in the radial direction DR, and when viewed along the radial direction DR, each of the ribs 115a is provided between adjacent long holes 114a in the circumferential direction DC.

[0028] [Second housing] 3, the second housing 12 has a pressure adjustment passage 120. The pressure adjustment passage 120 is a passage for adjusting (releasing) the pressure between the first passage L1 and the second passage L2 described with reference to FIG.

[0029] The pressure adjustment passage 120 includes an annular groove 123 formed in the second housing 12. The annular groove 123 is annular about the axis AX of the rotating shaft 31, and is formed between a first standing wall 121 and a second standing wall 122 of the second housing 12. Each of the first standing wall 121 and the second standing wall 122 is annular about the axis AX of the rotating shaft 31 when viewed along the Z direction, and stands toward the first housing 11. The second standing wall 122 is provided outside the first standing wall 121 in the radial direction DR so that its center coincides with the center of the first standing wall 121.

[0030] As shown in FIG. 7, the annular groove 123 faces the hole 114 provided in the second wall portion 112 in the Z direction, and faces the valve 3 accommodated in the accommodation space 11s.

[0031] 〔valve〕 Next, the configuration of the valve 3 will be described with reference to Fig. 5 to Fig. 7. Note that the following description will be given taking one of the two valves 3 shown in Fig. 2 as an example. Fig. 5 is a diagram showing the configuration of the valve 3. Fig. 6 is a cross-sectional view taken along line VI-VI shown in Fig. 5, and Fig. 7 is a cross-sectional view showing the valve 3 and a part of the manifold 1 (the configuration of the pressure adjustment flow path 120).

[0032] As described above, the valve 3 has the rotating shaft 31 and the valve body 32 which is rotatable integrally with the rotating shaft 31 (see FIG. 5). The rotating shaft 31 extends along the Z direction, and is rotated by power transmitted from a drive source such as an actuator.

[0033] As shown in FIG. 5, the valve body 32 includes a circular first valve wall 321 and a second valve wall 322 spaced apart from each other in the extension direction of the rotation shaft 31 (Z direction).

[0034] The second valve wall 322 faces the annular groove 123 in the Z direction via the second wall portion 112 in a state in which the valve 3 is accommodated in the accommodation space 11s.

[0035] In addition, the valve body 32 of the valve 3 further includes a connecting wall 323 arranged to connect the first valve wall 321 and the second valve wall 322, and a semicircular partition wall 324 extending in a direction perpendicular to the connecting wall 323 (semicircular when viewed in the Z direction).

[0036] The valve 3 includes a first valve space 31a (an example of a first space) through which the first fluid F1 flows, and a second valve space 31b (an example of a second space) through which the second fluid F2 flows. That is, the first valve space 31a and the second valve space 31b are through which the fluids F (the first fluid F1 and the second fluid F2) flow through the different circulation circuits C (the first circulation circuit C1 and the second circulation circuit C2) described with reference to FIG. 1 flow. In this embodiment, the first valve space 31a is partitioned by the connecting wall 323, the partition wall 324, and the second valve wall 322. The second valve space 31b is partitioned by the first valve wall 321, the connecting wall 323, and the second valve wall 322. 2 may also have at least a first valve wall 321, a second valve wall 322, and a connecting wall 323, and may have at least a valve space (an example of a first space) through which the first fluid F1 flows and a valve space (an example of a second space) through which the second fluid F2 flows, as valve spaces. However, the number and shape of the valve spaces are appropriately changed depending on the circulation circuit C to which the valve 3 is connected.

[0037] 6 and 7, a first valve body hole 325 and a second valve body hole 326 are formed in the second valve wall 322 of the valve 3. The first valve body hole 325 and the second valve body hole 326 penetrate the second valve wall 322 along the Z direction. In this embodiment, when viewed along the Z direction, the first valve body hole 325 is circular and the second valve body hole 326 is sector-shaped.

[0038] As shown in FIG. 7, the first valve body hole 325 communicates the first valve space 31a with the pressure adjustment flow path 120 via the hole 114 (long hole 114a). That is, the first flow path L1 communicates with the pressure adjustment flow path 120 via the first valve space 31a, the first valve body hole 325, and the hole 114 (long hole 114a). The first valve body hole 325 is configured to throttle the flow rate of the fluid F flowing from the first valve space 31a to the pressure adjustment flow path 120. More specifically, the first valve body hole 325 is an orifice configured to have a small flow path cross-sectional area on the first valve space 31a side. The flow path cross-sectional area is the area of ​​the first valve body hole 325 in a direction perpendicular to the flow direction of the mainstream of the fluid F flowing through the first valve body hole 325.

[0039] Further, the second valve body hole 326 communicates the second valve space 31b and the pressure adjustment flow path 120 via the hole portion 114 (long hole 114a). That is, the second flow path L2 communicates with the pressure adjustment flow path 120 via the second valve space 31b, the second valve body hole 326, and the hole portion 114 (long hole 114a).

[0040] In other words, the first flow path L1 and the second flow path L2 communicate with each other via the first valve space 31a, the first valve body hole 325, the hole portion 114, the second valve space 31b, the second valve body hole 326 and the pressure adjustment flow path 120.

[0041] According to the above configuration, the first flow path L1 and the second flow path L2 communicate with each other through the first valve space 31a, the first valve body hole 325, the hole 114, the second valve space 31b, the second valve body hole 326, and the pressure adjustment flow path 120. Therefore, for example, when the first fluid F1 flowing through the first flow path L1 thermally expands and the pressure of the first flow path L1 becomes higher than the pressure of the second flow path L2, the pressure of the first flow path L1 can be released to the second flow path L2. Similarly, when the second fluid F2 flowing through the second flow path L2 thermally expands and the pressure of the second flow path L2 becomes higher than the pressure of the first flow path L1, the pressure of the second flow path L2 can be released to the first flow path L1. In other words, the pressure of the fluid flow path L (the first flow path L1 and the second flow path L2) can be adjusted (the pressure of the first flow path L1 and the second flow path L2 can be balanced).

[0042] 1, the first circulation circuit C1 is provided with a reserve tank T. Therefore, by communicating the first flow path L1 and the second flow path L2 through the pressure adjustment flow path 120, the thermal expansion of the second fluid F2 flowing through the second flow path L2 can be absorbed by the reserve tank T provided in the first circulation circuit C1.

[0043] [Summary of the above embodiment] In the above embodiment, the following configurations are envisaged.

[0044] (1) The cooling module 100 includes a manifold 1 having therein a first flow path L1 through which a first fluid F1 flows and a second flow path L2 through which a second fluid F2 flows, and a valve 3 attached to the manifold 1 and controlling the flow of the first fluid F1 and the second fluid F2. The manifold 1 has a pressure adjustment flow path 120 that adjusts the pressure between the first flow path L1 and the second flow path L2.

[0045] According to this configuration, the pressure of the fluid flow path L (the first flow path L1 and the second flow path L2) can be adjusted (the pressure can be balanced between the first flow path L1 and the second flow path L2). Moreover, since the pressure adjustment flow path 120 is provided in the manifold 1, the amount of piping can be reduced compared to the case where a separate pressure adjustment flow path is provided outside the cooling module 100.

[0046] (2) In the cooling module 100 of (1), the valve 3 has a rotating shaft 31 and a valve body 32 rotatable around the rotating shaft 31, and the manifold 1 is formed with a circular annular groove 123 centered on the rotating shaft 31, facing the valve body 32 in a direction along the rotating shaft 31, and it is preferable that the pressure adjustment passage 120 includes the annular groove 123.

[0047] According to this configuration, the pressure adjustment flow path 120 includes an annular groove 123 having a circular ring shape centered on the rotation axis 31. Therefore, even when the valve 3 rotates, the first flow path L1 and the second flow path L2 can be communicated with each other via the pressure adjustment flow path 120.

[0048] In the cooling module 100 of (3)(2), the valve 3 is formed with a first valve body hole 325 and a second valve body hole 326 penetrating the valve body 32 in a direction along the rotating shaft 31, and the manifold 1 is formed with a plurality of long holes 114a whose longitudinal direction is the direction in which the annular groove 123 extends, and it is preferable that the first flow path L1 communicates with the pressure adjustment flow path 120 via the first valve body hole 325 and the long holes 114a, and the second flow path L2 communicates with the pressure adjustment flow path 120 via the second valve body hole 326 and the long holes 114a.

[0049] According to this configuration, the first flow path L1 and the second flow path L2 are connected via the first valve body hole 325 and the second valve body hole 326 formed in the valve 3 and the long hole 114a formed in the manifold 1, so that the pressure of the fluid flow path L can be adjusted.

[0050] (4) In the cooling module 100 of (2) or (3), the manifold 1 further has an insertion hole portion 113 through which the rotating shaft 31 is inserted and a plurality of ribs 115a extending in a direction perpendicular to the direction along the rotating shaft 31, and the plurality of ribs 115a are preferably arranged radially from the insertion hole portion 113 as a center.

[0051] According to this configuration, the rigidity of the insertion hole portion 113 through which the rotating shaft 31 is inserted is improved by the plurality of ribs 115a extending in a direction perpendicular to the direction along the rotating shaft 31, and the rotating shaft 31 can be stably supported. This allows the valve 3 to rotate more stably.

[0052] Other embodiments Next, other embodiments of the cooling module will be described.

[0053] (a) In the above embodiment, the pressure adjustment channel 120 faces the valve 3 in the Z direction, but the pressure adjustment channel 120 may face the valve 3 in the radial direction DR.

[0054] (b) In the cooling module 100, the number of pumps 2 integrated with the manifold 1 is not particularly limited. In addition, the number of valves 3 integrated with the manifold 1 is not particularly limited.

[0055] (c) The reserve tank T may be provided only in the second circulation circuit C2 instead of in the first circulation circuit C1.

[0056] (d) A first valve body hole 325 and a second valve body hole 326 may be formed in one of the two valves 3 or in both of the two valves 3, and the first flow path L1 and the second flow path L2 may be connected via the first valve space 31a, the first valve body hole 325, the hole portion 114, the second valve body hole 326, the second valve space 31b, and the pressure adjustment flow path 120.

[0057] (e) The positions at which the first valve body hole 325 and the second valve body hole 326 are provided in the second valve wall 322 can be interchanged. In particular, in the above embodiment, the first valve body hole 325 is provided on the side of the second valve wall 322 that separates the first valve space 31a (i.e., the side of the first flow path L1), but it may be provided on the side of the second valve wall 322 that separates the second valve space 31b (i.e., the side of the second flow path L2). In this case, the second valve body hole 326 is provided on the side of the second valve wall 322 that separates the first valve space 31a (i.e., the side of the first flow path L1).

[0058] (f) In the above embodiment, the multiple ribs 115a are provided radially from the insertion hole portion 113 as the center, but the multiple ribs 115a do not have to be provided radially. Therefore, the number of ribs 115a is not limited to four. The number of ribs 115a may be any number that maintains the rigidity of the peripheral portion 113b and does not impede stable rotation of the valve body 32 of the valve 3, and may be, for example, two to three, five or more.

[0059] (g) In the above embodiment, the hole portion 114 has four long holes 114a, but the number of long holes 114a is not limited to four, and may be two, three, five or more. In addition, the shape of the hole portion 114 (formed in the second housing 12) is not limited to a long hole with the circumferential direction DC as the longitudinal direction. The hole formed in the second housing 12 may be circular, elliptical, sector-shaped, or the like when viewed along the Z direction as long as it allows the first flow path L1 and the second flow path L2 to communicate with each other via the pressure adjustment flow path 120.

[0060] (h) The first valve body hole 325 does not have to be configured so that the flow path cross-sectional area on the first valve space 31a side is small so as to throttle the flow rate of the fluid F. In addition, the shape of the first valve body hole 325 as viewed along the Z direction is not limited to a circle, and can be a shape other than a circle, such as an ellipse, a triangle, or a rectangle. Similarly, the shape of the second valve body hole 326 as viewed along the Z direction is not limited to a sector shape, and can be a shape other than a sector shape, such as an ellipse, a triangle, or a rectangle.

[0061] (i) The accessories connected to the fluid flow path L are not limited to those in the above embodiment. For example, a DC-DC converter, a charger, and the like may also be connected to the fluid flow path L.

[0062] (j) Note that the configurations disclosed in each of the above embodiments can be applied in combination with configurations disclosed in other embodiments, as long as no contradiction occurs. As for other configurations, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be made as appropriate within the scope of the present disclosure. [Industrial Applicability]

[0063] The technology disclosed herein can be used in a cooling module. [Explanation of symbols]

[0064] 1: manifold, 3: valve, 31: rotating shaft, 32: valve body, 100: cooling module, 113: insertion hole portion, 114a: long hole, 115a: rib, 120: pressure adjustment flow path, 123: annular groove, 325: first valve body hole, 326: second valve body hole, F1: first fluid, F2: second fluid, L1: first flow path, L2: second flow path

Claims

1. a manifold including therein a first flow path through which a first fluid flows and a second flow path through which a second fluid flows; a valve attached to the manifold for controlling the flow of the first fluid and the second fluid, The manifold is a cooling module having a pressure adjustment passage that adjusts pressure between the first passage and the second passage.

2. The valve has a rotating shaft and a valve body rotatable around the rotating shaft, The manifold has an annular groove centered on the rotation shaft and facing the valve body in a direction along the rotation shaft, The cooling module of claim 1 , wherein the pressure regulating passage includes the annular groove.

3. The valve is formed with a first valve body hole and a second valve body hole penetrating the valve body in a direction along the rotation axis, The manifold is formed with a plurality of elongated holes whose longitudinal direction is the direction in which the annular groove extends, 3. The cooling module according to claim 2, wherein the first flow path is connected to the pressure adjustment flow path via the first valve body hole and the long hole, and the second flow path is connected to the pressure adjustment flow path via the second valve body hole and the long hole.

4. The manifold comprises: an insertion hole portion through which the rotating shaft is inserted; a plurality of ribs extending in a direction perpendicular to the direction along the rotation axis; The cooling module according to claim 2 , wherein the plurality of ribs are provided radially from the insertion hole as a center.

Images