Control valve

Abstract

A control valve according to an aspect of the present disclosure is provided with a housing and a rotating body having a valve body. A first communication port and a second communication port for communicating the inside and the outside of the internal space are formed at different positions around the central axis of the rotating body in the valve body. The valve body is provided with a partition section that partitions the internal space into a first space that communicates with the first communication port and opens toward a first side in the axial direction, and a second space that communicates with the second communication port and opens toward a second side in the axial direction. The rotating body rotates between a first state in which the first inlet and the first outlet communicate with each other through the first space, and a second state in which the second inlet and the second outlet communicate with each other through the second space. And a second state in which the first inlet and the second outlet communicate with each other through the first space and the second inlet and the first outlet communicate with each other through the second space.

Description

Technical Field

[0001] The present disclosure relates to control valves.

[0002] This application claims priority from Japanese Patent Application No. 2023-039652 filed in Japan on March 14, 2023, the contents of which are incorporated herein by reference. Background Art

[0003] Vehicles are equipped with a cooling system. This system cools heat-generating components (such as the engine or motor) by circulating coolant between them and heat-dissipating components (such as a radiator or heater). In the cooling system, control valves are installed in the flow path connecting the heat-generating and heat-dissipating components to control the flow of coolant.

[0004] Research is underway to further reduce the size of control valves. For example, Patent Document 1 below discloses a configuration in which a first opening and a second opening are arranged in parallel along the axial direction of the valve body. In Patent Document 1, a third opening is arranged at a different position in the valve body relative to the first and second openings in the circumferential direction, overlapping at least a portion of the first and second openings.

[0005] Prior Art Literature Patent Literature Patent Document 1: Japanese Patent Application Laid-Open No. 2015-59615. Summary of the Invention

[0006] Problems to be solved by the invention However, in the prior art, for example, a sealing mechanism needs to be provided between the port and the opening for each opening. Therefore, in the prior art, there is room for improvement in terms of reducing the number of parts and reducing costs.

[0007] In the prior art, there is only one inlet, so in order to switch the circuit, it is necessary to configure multiple control valves on the circuit.

[0008] The present disclosure provides a control valve capable of switching a circuit while reducing the number of parts and costs.

[0009] Solutions to Problems In order to solve the above-mentioned problems, the present disclosure adopts the following solutions.

[0010] (1) A control valve according to one embodiment of the present disclosure comprises: a housing having a first inlet and a second inlet for fluid to flow in from the outside, and a first outlet and a second outlet for fluid to flow out to the outside; and a rotating body having a shaft portion located on a first side in the axial direction and rotatably supported by the housing, and a valve body forming an internal space with an outer diameter gradually increasing from the shaft portion toward the second side in the axial direction, wherein the outer peripheral surface of the valve body can be slidably supported on a support surface formed on the housing, and a first communication port and a second communication port for communicating the inside and outside of the internal space are formed at different positions around the central axis of the rotating body in the valve body, and the valve body has a plurality of internal and external communication ports. The body includes a partition portion, which divides the internal space into a first space connected to the first communicating port and opening to the first side in the axial direction, and a second space connected to the second communicating port and opening to the second side in the axial direction. The rotating body rotates between a first state and a second state. The first state is a state in which the first inlet and the first outlet are connected through the first space and the second inlet and the second outlet are connected through the second space. The second state is a state in which the first inlet and the second outlet are connected through the first space and the second inlet and the first outlet are connected through the second space.

[0011] According to this solution, the outer peripheral surface of the valve body is directly supported by the supporting surface of the housing, eliminating the need for separate sealing components or bearings. This reduces the number of parts and assembly time, miniaturizing the control valve and lowering costs.

[0012] The valve body is formed into a tapered shape. If the outer diameter of the rotor expands or contracts due to heat, the rotor will displace axially relative to the housing in proportion to the increase or decrease in outer diameter. Consequently, the valve body remains stably supported by the housing regardless of the rotor's expansion or contraction, ensuring stable control valve operation.

[0013] In particular, in this embodiment, the structure is as follows: the rotating body rotates between a first state and a second state, the first state is a state in which the first inlet and the first outlet are connected through the first space and the second inlet and the second outlet are connected through the second space, and the second state is a state in which the first inlet and the second outlet are connected through the first space and the second inlet and the first outlet are connected through the second space.

[0014] This configuration, by providing a control valve between the two circuits, allows switching between a mode in which fluid circulates independently in each circuit and a mode in which fluid circulates simultaneously between the two circuits. Furthermore, in this embodiment, the first space opens to the first axial side, while the second space opens to the second axial side, making it easier to maintain uniform fluid pressure within each space. This ensures sealing between the valve body and the support surface while suppressing excessive sliding resistance, enabling smooth rotation of the rotating body.

[0015] (2) In the control valve involved in the above-mentioned scheme (1), it is preferred that the above-mentioned first flow outlet and the above-mentioned second flow inlet are arranged at positions relative to each other in a first direction in a radial direction intersecting with the above-mentioned axial direction, and the above-mentioned first flow outlet and the above-mentioned second flow inlet are arranged at positions relative to each other in a second direction intersecting with the above-mentioned first direction when viewed from the above-mentioned axial direction.

[0016] According to this aspect, the outlets and inlets are arranged in different directions in the radial direction, so that handling of the piping becomes easy.

[0017] (3) In the control valve according to any one of the above aspects (1) or (2), the volume of the second space is preferably larger than the volume of the first space.

[0018] According to this aspect, it is easy to ensure the hydraulic pressure acting on the second space. Therefore, it is easy to press the valve body toward the support surface, so the sealing performance between the valve body and the support surface can be improved.

[0019] (4) In the control valve according to any one of the above schemes (1) to (3), the valve body preferably extends linearly toward the radially outer side intersecting the axial direction as it moves from the first side toward the second side in the axial direction when viewed in cross section along the axial direction.

[0020] Furthermore, for example, if the valve body is formed into an arcuate cross-sectional shape, the orientation of the tangential direction of the valve body's outer peripheral surface varies depending on the axial position. In this case, when the valve body contracts due to heat, the deformation behavior differs depending on the axial position of the valve body. Specifically, the radially inward deformation increases as the valve body moves toward the second axial side (as the tangential inclination increases), making it difficult to ensure sealing between the support surface and the valve body.

[0021] In contrast, according to this solution, the cross-sectional shape of the valve body is formed into a straight line, making it easier to maintain uniform deformation of the valve body due to thermal contraction throughout the entire axial direction. As a result, the valve body is stably supported on the support surface regardless of the expansion and contraction of the rotor. This ensures the operational stability of the control valve.

[0022] (5) In the control valve according to any one of the above schemes (1) to (4), it is preferred that, when the valve body is viewed in cross section along the axial direction, the angle formed between the portions of the valve body facing each other in the radial direction intersecting the axial direction is greater than 90° and smaller than 180°.

[0023] According to this solution, by making the angle larger than 90°, when the outer diameter of the rotor expands or contracts due to heat, the rotor can more smoothly move on the support surface in accordance with the increase or decrease in outer diameter. Consequently, the valve body is stably supported on the support surface regardless of the expansion or contraction of the rotor. This ensures stable operation of the control valve.

[0024] (6) In the control valve according to any one of the above aspects (1) to (5), the second inlet and the second outlet are preferably connected to a non-driving circuit that supplies fluid to non-driving equipment of a vehicle.

[0025] According to this solution, when the vehicle power is off, the coolant is circulated only in the non-driving circuit, which makes it easy to ensure the liquid pressure in the second space. Therefore, it is easy to press the valve body toward the support surface, so that the sealing between the valve body and the support surface can be improved.

[0026] Effects of the Invention According to one aspect of the present disclosure, circuit switching can be performed while reducing the number of parts and lowering costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a block diagram of a cooling system (individual temperature adjustment mode) according to the embodiment.

[0028] Figure 2 This is a block diagram of a cooling system (combined mode) according to an embodiment.

[0029] Figure 3 It is a perspective view of a control valve according to the embodiment.

[0030] Figure 4 It is an exploded perspective view of a control valve according to an embodiment.

[0031] Figure 5 corresponds to Figure 3 Cross-sectional view of the V-V line.

[0032] Figure 6 corresponds to Figure 3 Cross-sectional view of line VI-VI.

[0033] Figure 7 yes Figure 5 Enlarged view of Part VII.

[0034] Figure 8 It is a bottom view of the cover according to the embodiment.

[0035] Figure 9 This is a plan view of the control valve (individual temperature adjustment mode) shown through the cover according to the embodiment.

[0036] Figure 10 This is a plan view of a control valve (integrated mode) shown through a cover according to the embodiment. DETAILED DESCRIPTION

[0037] Next, the embodiments of the present disclosure will be described based on the accompanying drawings. In the embodiments or modified examples described below, the same reference numerals are sometimes assigned to corresponding structures and the description thereof is omitted. In the following description, expressions such as "parallel" or "orthogonal", "center", "coaxial", etc., which indicate relative or absolute configurations, not only indicate strictly such configurations, but also indicate a state of relative displacement at an angle or distance with a tolerance or a degree that can achieve the same function. In this embodiment, the so-called "relative" is not limited to the case where the orthogonal directions (normal directions) of the two surfaces are consistent with each other, but also includes the case where the orthogonal directions intersect with each other.

[0038] [Cooling system 1] Figure 1 、 Figure 2 is a block diagram of the cooling system 1. Figure 1 、 Figure 2 middle, Figure 1 Shows individual temperature control modes. Figure 2 Shows merge mode.

[0039] like Figure 1 、 Figure 2 As shown, cooling system 1 is installed in, for example, an electric vehicle. Electric vehicles include electric vehicles, hybrid vehicles, plug-in hybrid vehicles, fuel cell vehicles, and other vehicles equipped with a motor as a driving source. The cooling system of this embodiment may also be a cooling system equipped with only an engine (internal combustion engine) as a driving source for the vehicle.

[0040] The cooling system 1 includes a driving circuit 2 , a non-driving circuit 3 , and a control valve 5 .

[0041] The drive circuit 2 is a circuit to which devices (drive devices) that provide vehicle propulsion, at least when the vehicle power is on (READY ON), are connected. Devices whose operating temperature range tends to reach relatively high temperatures are connected to the drive circuit 2. In the illustrated example, the drive circuit 2 includes, for example, a drive motor (drive source) 7 and a first water pump 8. The first water pump 8 and the drive motor 7 are connected to the drive circuit 2 in order from upstream to downstream. Alternatively, an inverter or radiator may be connected to the drive circuit 2 as a drive device.

[0042] The non-driving circuit 3 is a circuit connected to devices (non-driving equipment) that are powered on when the vehicle power is off (READY OFF), in addition to when the vehicle power is on. Devices with a lower operating temperature range than the driving equipment are connected to the non-driving circuit 3. For example, a battery 10 and a second water pump 11 are provided on the non-driving circuit 3. The second water pump 11 and the battery 10 are connected to the non-driving circuit 3 in order from upstream to downstream. Air conditioning equipment (e.g., a chiller, heater core, compressor, etc.) may also be connected to the non-driving circuit 3 as non-driving equipment.

[0043] The control valve 5 functions as a so-called four-way valve. It is connected to the upstream and downstream ends of the drive circuit 2 and the upstream and downstream ends of the non-drive circuit 3. The control valve 5 switches the flow of coolant in the cooling system 1.

[0044] For example, when the vehicle is in normal operation or when the vehicle power is off, the control valve 5 is Figure 1 As shown, the drive circuit 2 and the non-drive circuit 3 are separate closed circuits (individual temperature control mode). In the individual temperature control mode, by operating the water pumps 8 and 11 provided in circuits 2 and 3, coolant circulates through the control valve 5 in each of the drive circuit 2 and the non-drive circuit 3. Normal vehicle operation refers to a state in which the drive and non-drive devices operate within their optimal temperature ranges when the vehicle power is turned on.

[0045] For example, when the driving equipment and non-driving equipment are operating outside the optimal temperature range during vehicle startup or rapid cooling, the control valve 5 Figure 2 As shown, the drive circuit 2 and the non-drive circuit 3 are combined into a closed circuit (merge mode). In the merge mode, the water pumps 8 and 11 provided in the respective circuits 2 and 3 are operated, so that the coolant can circulate between the drive circuit 2 and the non-drive circuit 3 through the control valve 5.

[0046] Control valve 5 Figure 3 It is a perspective view of the control valve 5 . Figure 4 It is an exploded perspective view of the control valve 5 .

[0047] like Figure 3 、 Figure 4 As shown, the control valve 5 includes a housing 21 , a drive unit 22 , a rotating body 23 , and a biasing member 24 .

[0048] <Casing 21> The housing 21 includes a housing body 31 and a cover 32. In the following description, the direction along the central axis O1 of the rotating body 23 is simply referred to as the axial direction. In the axial direction, the drive unit 22 side is considered the lower side (the first side), and the cover 32 side is considered the upper side (the second side). When viewed from the axial direction, the direction intersecting the central axis O1 is referred to as the radial direction, and the direction surrounding the central axis O1 is referred to as the circumferential direction.

[0049] <Casing body 31> The housing body 31 includes a base portion 33, a first outflow port 34, a second outflow port 35, and a first inflow port 36. The base portion 33, the first outflow port 34, the second outflow port 35, and the first inflow port 36 are integrally formed by, for example, injection molding of a resin material.

[0050] The base portion 33 is formed in a bottomed cylindrical shape that is open upward. Specifically, the base portion 33 includes a mounting base 41 and a rotating body accommodating portion 42 .

[0051] Figure 5 corresponds to Figure 3 Cross-sectional view of the V-V line. Figure 6 corresponds to Figure 3 Cross-sectional view of line VI-VI.

[0052] like Figure 5 、 Figure 6 As shown, the mounting base 41 is the portion on which the drive unit 22 is mounted. The mounting base 41 includes a partition wall 41a and an upright wall 41b. In a plan view from the axial direction, the partition wall 41a is formed to extend radially outward relative to the rotating body housing 42. The upright wall 41b extends downward from the outer peripheral edge of the partition wall 41a.

[0053] Figure 7 yes Figure 5 Enlarged view of Part VII.

[0054] like Figure 7As shown, a through hole 45 is formed in the portion of the partition wall 41a located on the central axis O1, extending axially through the partition wall 41a. The through hole 45 is formed in a stepped shape. The inner diameter of the axially central portion of the through hole 45 is smaller than the inner diameters of the upper and lower ends. Specifically, the through hole 45 comprises a first large diameter portion 45a located at the bottom; a small diameter portion 45b connected to the first large diameter portion 45a from above; and a second large diameter portion 45c connected to the small diameter portion 45b from above. In the illustrated example, the inner diameters of the first large diameter portion 45a and the second large diameter portion 45c are equal. A seal ring 46, such as an X-ring, is housed within the second large diameter portion 45c. The seal ring 46 is embedded in the inner circumference of the second large diameter portion 45c, approaching or abutting the bottom surface of the second large diameter portion 45c. The inner diameter of the seal ring 46 is equal to that of the small diameter portion 45b.

[0055] like Figure 5 、 Figure 6 As shown, the rotating body housing portion 42 houses the rotating body 23. The rotating body housing portion 42 is formed into a cylindrical shape, extending upward from the partition wall 41a. The partition wall 41a closes the lower opening of the rotating body housing portion 42. The inner diameter of the rotating body housing portion 42 gradually increases from the bottom to the top. Specifically, the inner circumference of the rotating body housing portion 42 includes a relief surface 51, a transition surface 52, a support surface 53, and a positioning surface 54.

[0056] The escape surface 51 extends radially outward from a position recessed downward relative to the upper end opening edge of the through hole 45 (the second large-diameter portion 45 c ). The escape surface 51 is formed as a flat surface perpendicular to the axial direction.

[0057] The transition surface 52 extends upward from the outer peripheral edge of the retreat surface 51. The transition surface 52 is a cylindrical surface coaxial with the central axis O1. The transition surface 52 surrounds the retreat surface 51 over its entire circumference.

[0058] The support surface 53 is continuous along the entire circumference of the upper edge of the transition surface 52. The support surface 53 is a tapered surface that extends radially outward from the bottom to the top. In a cross-sectional view along the axial direction, the support surface 53 extends in a straight line. In a cross-sectional view along the axial direction, the angle θ1 ( Figure 6 The taper angle shown is preferably 90°<θ1<180°, and more preferably 110°<θ1<160°. In a cross-sectional view along the axial direction, the support surface 53 is formed symmetrically with respect to the central axis O1.

[0059] The positioning surface 54 extends upward from the upper edge of the support surface 53. The positioning surface 54 is a cylindrical surface coaxial with the central axis O1. The positioning surface 54 surrounds the support surface 53 over its entire circumference.

[0060] like Figure 5 、 Figure 6 As shown, a first outlet 53a, a second outlet 53b, and a first inlet 53c are formed on the support surface 53 of the rotating body accommodating portion 42. Each of the outlets 53a, 53b, and the first inlet 53c opens upward (to the second side in the axial direction) on the support surface 53. The opening edges (boundaries with the support surface 53) of each of the outlets 53a, 53b, and the first inlet 53c are preferably formed into a curved shape.

[0061] The outlets 53a and 53b are formed on the same circumference (at the same height in the axial direction) and at positions 180° apart in the circumferential direction. The outlets 53a and 53b are opposite to each other in the first direction (opposing direction) in the radial direction. The first inlet 53c is arranged at a position that is offset from the outlets 53a and 53b in the circumferential direction. In the example shown in the figure, the first inlet 53c is arranged at a position that is offset from the outlets 53a and 53b in the circumferential direction by 90°. However, the position, size, etc. of the outlets 53a, 53b and the first inlet 53c can be appropriately changed. The inner diameters of the outlets 53a and 53b are made equal.

[0062] like Figure 5 As shown, the first outflow port 34 connects, for example, the upstream end of the drive circuit 2 to the control valve 5 (first outflow port 53a). The first outflow port 34 is integrally formed with the base portion 33. The first outflow port 34 is formed into an L-shaped tubular shape when viewed in cross-section along the axial direction. Specifically, the first outflow port 34 includes an upstream lead portion 34a and a connecting portion 34b connected to the downstream side of the lead portion 34a.

[0063] The lead portion 34a extends downward from the opening edge of the first outlet 53a. The first outlet port 34 communicates with the first outlet 53a through the lead portion 34a. The lower end of the lead portion 34a is located between the lower surface of the partition wall 41a and the lower edge of the rising wall 41b.

[0064] The joint portion 34b extends outward in the first direction from the lower end of the lead portion 34a. The outer end of the joint portion 34b in the first direction protrudes outward from the base portion 33. For example, the drive circuit 2 is connected to the outer end of the joint portion 34b.

[0065] The second outflow port 35 connects, for example, the upstream end of the non-driving circuit 3 to the control valve 5 (second outflow port 53b). The second outflow port 35 is integrally formed with the base portion 33. The second outflow port 35 and the first outflow port 34 are symmetrically formed in the first direction, with the central axis O1 serving as the axis of symmetry. Specifically, the second outflow port 35 includes an upstream lead portion 35a and a downstream connection to the lead portion 35a.

[0066] The lead portion 35a extends downward from the opening edge of the second outlet 53b. The second outlet port 35 communicates with the second outlet 53b via the lead portion 35a. The lower end of the lead portion 35a is located between the lower surface of the partition wall 41a and the lower edge of the rising wall 41b.

[0067] The joint portion 35b extends outward from the lower end of the lead portion 35a in the first direction. The outflow ports 34 and 35 are arranged in a straight line along the first direction. The outer end of the joint portion 35b in the first direction protrudes further outward than the base portion 33. For example, the non-driving circuit 3 is connected to the outer end of the joint portion 35b.

[0068] like Figure 6 As shown, the first inlet port 36 connects, for example, the downstream end of the drive circuit 2 to the control valve 5 (first inlet 53c). The first inlet port 36 is integrally formed with the base portion 33. The first inlet port 36 is formed into an L-shaped tubular shape when viewed in cross-section along the axial direction. Specifically, the first inlet port 36 includes a downstream lead-out portion 36a and a joint portion 36b connected upstream of the lead-out portion 36a.

[0069] The lead-out portion 36a extends downward from the opening edge of the first inlet 53c. The first inlet port 36 communicates with the first inlet 53c through the lead-out portion 36a. The lower end of the lead-out portion 36a is located between the lower surface of the partition wall 41a and the lower edge of the rising wall 41b.

[0070] The joint portion 36b extends from the lower end of the lead portion 36a toward one side in a second radial direction that intersects (is perpendicular to) the first radial direction. The outer end of the joint portion 36b in the second radial direction protrudes further outward than the base portion 33. For example, the drive circuit 2 is connected to the outer end of the joint portion 36b.

[0071] <Cover 32> like Figures 4 to 6 As shown, the cover 32 closes the upper opening of the base portion 33 (rotating body housing 42). Specifically, the cover 32 includes an opposing wall 61, a positioning portion 62, a spring support portion 63, and a second inlet port 64. The opposing wall 61, positioning portion 62, spring support portion 63, and second inlet port 64 are integrally formed, for example, by injection molding of a resin material.

[0072] The opposing wall 61 is formed into a plate-like shape with its thickness oriented in the axial direction. The opposing wall 61's planar outline is formed to be identical to the planar outline of the rotating body accommodating portion 42. The opposing wall 61 is assembled to the rotating body accommodating portion 42 so as to overlap with the upper surface of the rotating body accommodating portion 42. This seals the upper opening of the base portion 33 with the lid 32. A gasket, such as an O-ring, is interposed between the opposing wall 61 and the base portion 33 (rotating body accommodating portion 42).

[0073] Figure 8 It is a bottom view of the cover 32. Figure 9 It is a top view of the control valve 5 (individual temperature adjustment mode) shown through the cover 32 .

[0074] like Figure 8 、 Figure 9 As shown, a second inlet 65 is formed in the opposing wall 61. The second inlet 65 axially penetrates the opposing wall 61 and extends circumferentially. In the illustrated example, the inlet 65 is formed in a C-shape when viewed from above. Specifically, the second inlet 65 surrounds the central axis O1 on the other side in the second direction (the side opposite the first inlet port 36). One circumferential end of the inlet 65 overlaps with the first inlet 53a when viewed from above, and the other circumferential end overlaps with the second inlet 53b when viewed from above.

[0075] like Figure 5 、 Figure 6 As shown, the positioning portion 62 protrudes downward from the outer periphery of the opposing wall 61. The positioning portion 62 is formed into a cylindrical shape coaxially with the central axis O1. When the cover 32 is assembled to the base portion 33, the positioning portion 62 is inserted into the inner side of the rotating body accommodating portion 42. The positioning portion 62 abuts the positioning surface 54 from the radially inner side, thereby radially positioning the cover 32 relative to the base portion 33.

[0076] The spring support portion 63 protrudes downward from a portion of the opposing wall 61 located radially inward of the positioning portion 62. The spring support portion 63 is formed into a cylindrical shape coaxially with the central axis O1. The spring support portion 63 of this embodiment has a stepped shape, with the outer diameter decreasing toward the lower portion. Specifically, the spring support portion 63 includes an axial support portion 63a and a radial support portion 63b.

[0077] The axial support portion 63a constitutes the upper end portion of the spring support portion 63. The outer diameter of the axial support portion 63a is larger than the inner diameter of the large diameter portions 45a and 45c. The lower end surface of the axial support portion 63a is formed as a flat surface perpendicular to the axial direction.

[0078] The radial support portion 63b protrudes downward from the spring support portion 63. The outer diameter of the radial support portion 63b is smaller than that of the large-diameter portions 45a and 45c, and larger than the inner diameter of the small-diameter portion 45b. Therefore, the radial support portion 63b and the seal ring 46 are axially opposed. The inner diameter of the spring support portion 63 is uniform throughout the axial support portion 63a and the radial support portion 63b. In the illustrated example, the inner diameter of the spring support portion 63 is equal to the inner diameter of the small-diameter portion 45b.

[0079] like Figure 5 、 Figure 6 、 Figure 8 As shown, the second inlet port 64 connects the downstream end of the non-driving circuit 3 and the control valve 5 (the second inlet 65 ). The second inlet port 64 includes a branch flow path 71 and a common flow path 72 .

[0080] The branch flow path 71 covers the inlet 65 from above and is formed in a dome shape that bulges upward relative to the opposing wall 61. The branch flow path 71 (each branch portion 71a, 71b) is formed in a semicircular shape in a cross-sectional view perpendicular to the extending direction of the branch flow path 71.

[0081] In the illustrated example, the branch channel 71 exhibits the same external shape as the inlet 65 when viewed from above, forming a C-shape extending circumferentially. Specifically, the branch channel 71 includes a first branch portion 71a extending from the circumferential center of the branch channel 71 to one side, and a second branch portion 71b extending from the circumferential center of the branch channel 71 to the other side. The branch channel 71 communicates with the inlet 65 along its entire length (circumferential direction). The opening area of ​​the lower end of the branch channel 71 is equal to that of the inlet 65.

[0082] The common flow path 72 and the branch flow paths 71 are located on the same plane, perpendicular to the central axis O1. Specifically, the common flow path 72 protrudes from the center of the branch flow path 71 in the extension direction (circumferential direction) toward the other side in the second direction. When viewed from above, the second inlet port 64 (common flow path 72) is arranged in a straight line at a position opposite the first inlet port 36 (junction 36b) in the second direction. In this case, the inlet ports 36, 64 and the outflow ports 34, 35 extend in mutually orthogonal directions. The base end of the common flow path 72 communicates with the branch flow path 71. The front end of the common flow path 72 is connected to the non-driving circuit 3. The front end of the common flow path 72 protrudes outward in the second direction relative to the opposing wall 61. Coolant flowing into the common flow path 72 from the downstream end of the non-driving circuit 3 is distributed to the first branch portion 71a and the second branch portion 71b at the front end of the common flow path 72.

[0083] The common flow path 72 extends in a direction perpendicular to the direction of extension of the outflow ports 34 and 35 (joint portions 34b and 35b). The common flow path 72 is formed into a circular shape when viewed in a cross-section perpendicular to the second direction. The upward bulge of the common flow path 72 relative to the opposing wall 61 is greater than the upward bulge of the branch flow paths 71 relative to the opposing wall 61. Therefore, the upper edge of the common flow path 72 constitutes the uppermost edge of the control valve 5.

[0084] Here, the flow path cross-sectional areas (areas perpendicular to the respective extension directions) of the first branch portion 71a and the second branch portion 71b are formed to be uniform throughout their entire circumferential length. The sum of the flow path cross-sectional areas of the first branch portion 71a and the second branch portion 71b is preferably equal to or greater than the flow path cross-sectional area (area perpendicular to the extension direction) of the common flow path 72. However, the sum of the flow path cross-sectional areas of the first branch portion 71a and the second branch portion 71b may be smaller than the flow path cross-sectional area of ​​the common flow path 72.

[0085] <Drive unit 22> like Figure 4 As shown, the drive unit 22 is composed of a motor or a reduction mechanism, a control substrate, etc. (not shown). The drive unit 22 is arranged below the mounting base 41. The drive unit 22 is assembled to the upright wall 41b in a state of being overlapped with the mounting base 41 in the axial direction. Figure 7 As shown in FIG1 , the drive unit 22 includes an output shaft 22a that protrudes upward. The output shaft 22a is formed in a cylindrical shape and is arranged coaxially with the central axis O1.

[0086] Rotating body 23 like Figure 4 、 Figure 5 As shown, the rotor 23 rotates inside the housing 21 to switch the connection and blockage between the inlet 53c, 65 and the outlet 53a, 53b. Specifically, the rotor 23 includes a shaft 80 and a valve body 81. The rotor 23 is integrally formed by, for example, injection molding of a resin material.

[0087] like Figure 7 As shown, the shaft portion 80 is arranged coaxially with the central axis O1 and extends axially through the through hole 45. Specifically, the shaft portion 80 includes a coupling portion 80a constituting the lower end of the shaft portion 80 and a transmission portion 80b connected to the upper portion of the coupling portion 80a.

[0088] The coupling portion 80a is formed into a solid shape. The lower portion of the coupling portion 80a is embedded in the inner side of the output shaft 22a. In the present embodiment, the coupling portion 80a is connected to the output shaft 22a in a state where the male spline formed on the outer circumferential surface of the coupling portion 80a and the female spline formed on the inner circumferential surface of the output shaft 22a are engaged in the circumferential direction. Thus, the coupling portion 80a is configured to be able to rotate around the central axis O1 as the output shaft 22a rotates. The upper portion of the coupling portion 80a is arranged on the inner side of the first large diameter portion 45a. A recessed portion (recessed portion) 80a1 that is recessed upward is formed on the lower end surface of the coupling portion 80a. The coupling portion 80a can also be formed into a hollow shape.

[0089] The transmission portion 80b is formed into a bottomed cylindrical shape (hollow shape) coaxial with the central axis O1. The inner side of the transmission portion 80b forms a recessed portion 84 that is open upward. The transmission portion 80b includes a connecting portion 85 and a peripheral wall portion 86.

[0090] The connecting portion 85 is formed into a disk shape that is larger than the outer shape of the connecting portion 80a when viewed from above. The connecting portion 85 is connected to the upper end surface of the connecting portion 80a in a state that extends radially outward relative to the outer peripheral surface of the connecting portion 80a. The connecting portion 85 is arranged on the inner side of the small-diameter portion 45b. A recessed portion 85a that is recessed downward is formed on the upper end surface of the connecting portion 85. The recessed portion 85a is connected to the recessed portion 84 on the upper end surface of the connecting portion 85. The recessed portion 85a reaches the connecting portion 80a.

[0091] The peripheral wall portion 86 extends upward from the outer peripheral edge of the connecting portion 85. The peripheral wall portion 86 is formed into a multi-stage cylindrical shape with an outer diameter gradually increasing as it goes upward. Specifically, the peripheral wall portion 86 includes a small cylindrical portion 86a, an extension portion 86b, and a large cylindrical portion 86c.

[0092] Small cylindrical portion 86a is formed into a cylindrical shape with an outer diameter equal to that of connecting portion 85. Small cylindrical portion 86a is positioned inside second large-diameter portion 45c. The inner circumferential surface of seal ring 46 is in close contact with the outer circumference of small cylindrical portion 86a. This blocks the communication between the interior and exterior of housing 21 through through-hole 45.

[0093] The extension portion 86b extends radially outward from the upper opening edge of the small cylindrical portion 86a. The extension portion 86b axially opposes the second large-diameter portion 45c, with at least a portion thereof projecting into the rotating body accommodating portion 42. This prevents the seal ring 46 from falling through the upper opening of the second large-diameter portion 45c. The outer diameter of the extension portion 86b is formed to be less than or equal to the inner diameter of the second large-diameter portion 45c.

[0094] The large cylindrical portion 86c is formed in a cylindrical shape extending upward from the outer peripheral edge of the protruding portion 86b. The large cylindrical portion 86c and the radial support portion 63b face each other in the axial direction.

[0095] like Figure 5 、 Figure 6 As shown, the valve body 81 is formed into a truncated cone shape that opens upward. The valve body 81 is arranged in the rotating body accommodating portion 42 so as to be rotatable around the central axis O1 as the shaft portion 80 rotates. Specifically, the valve body 81 includes a valve bottom wall 91, a sliding wall 92, and a partition 93. The space in the valve body 81 surrounded by the valve bottom wall 91 and the sliding wall 92 constitutes the internal space K of the valve body 81. The internal space K is open upward. Therefore, the inlet 65 is always connected to the internal space K. On the other hand, the internal space K is connected to the recessed portion 84 at the lower end.

[0096] The valve bottom wall 91 extends radially outward from the lower end of the large cylindrical portion 86c. Therefore, the large cylindrical portion 86c protrudes upward from the valve bottom wall 91 toward the interior space K of the valve body 81. The valve bottom wall 91 faces the retreat surface 51 with a gap therebetween in the axial direction. In the illustrated example, the lower surface of the valve bottom wall 91 is located below the upper end of the transition surface 52. The upper surface of the valve bottom wall 91 is located above the upper end of the transition surface 52.

[0097] The sliding wall 92 is connected to the outer peripheral edge of the valve bottom wall 91. The sliding wall 92 is formed into a tapered cylindrical shape that gradually expands in diameter upward. The upper end opening of the sliding wall 92 faces the opposing wall 61. The spring support portion 63 enters the internal space K through the upper end opening of the sliding wall 92. In the illustrated example, the entire radial support portion 63b and the lower end of the axial support portion 63a of the spring support portion 63 enter the internal space K. Alternatively, at least a portion of the spring support portion 63 may enter the internal space K or be located above the internal space K.

[0098] In a cross-sectional view along the axial direction, the sliding wall 92 has a uniform thickness throughout the entire vertical region and extends linearly in a radially outward direction as it moves upward. The outer peripheral surface of the sliding wall 92 extends in a manner similar to the support surface 53. Therefore, in a cross-sectional view along the axial direction, the angle θ2 ( Figure 6 The tapered angle (shown) is equivalent to the tapered angle θ1 of the support surface 53. Angle θ2 is preferably 90° < θ2 < 180°, and more preferably 110° < θ2 < 160°. The outer peripheral surface of the sliding wall 92 slides on the support surface 53 as the valve body 81 rotates. The support surface 53 rotatably supports the valve body 81 via the sliding wall 92. The upper edge of the sliding wall 92 approaches the positioning surface 54 from the radially inner side.

[0099] The sliding wall 92 is formed with a first communication port 92a and a second communication port 92b that extend axially through the sliding wall 92. The first communication port 92a and the second communication port 92b are spaced apart in the circumferential direction. Each communication port 92a, 92b is formed in an arc shape extending circumferentially around the valve bottom wall 91.

[0100] The partition 93 blocks the connection between the first communication opening 92a and the second communication opening 92b in the internal space K. The partition 93 surrounds the first communication opening 92a from the side and top on the radial side of the sliding wall 92 relative to the shaft 80. The partition 93 is formed into an L-shape in cross-section. Specifically, the partition 93 includes sidewalls 93a and a top wall 93b.

[0101] The side wall portion 93a extends upward from the opening edge of the first communication port 92a. The side wall portion 93a surrounds the first communication port 92a over its entire circumference. The lower end edge of the side wall portion 93a extends upward as it moves radially outward, following the inner surface of the sliding wall 92.

[0102] The top wall portion 93b closes the upper end opening edge of the side wall portion 93a. The top wall portion 93b and the opposing wall 61 are spaced apart in the axial direction and face each other. The side wall portion 93a may be formed only on the radially inner portion and the circumferentially opposite portions of the opening edge of the first communication port 92a.

[0103] The space surrounded by the partition 93 in the internal space K (the space located radially outward with respect to the partition 93 ) constitutes a first space K1 . The first space K1 is open downward through the first communication port 92 a .

[0104] The space within the internal space K surrounded by the partition 93 and the sliding wall 92 (the space radially inward of the partition 93) constitutes the second space K2. The second space K2 is open downward through the second communication port 92b and is open upward through the upper end opening of the valve body 81. In this embodiment, the volume of the second space K2 is larger than that of the first space K1.

[0105] Figure 9 It is a plan view of the control valve 5 in the first state, shown through the cover 32 .

[0106] like Figure 9 As shown, the rotating body 23 rotates between a first state and a second state in response to the driving force of the driving unit 22. The first state is a state in which at least a portion of the first inlet 53c and the first outlet 53a are connected to each other through the first space K1, and at least a portion of the second inlet 65 and the second outlet 53b are connected to each other through the second space K2.

[0107] In the first state, the first communication port 92a is arranged circumferentially over the first inlet 53c and the first outlet 53a. Thus, the first inlet 53c and the first outlet 53a communicate with the first space K1 through the first communication port 92a.

[0108] In the first state, the second communication port 92b overlaps with the second outflow port 53b in a plan view, thereby connecting the second outflow port 53b to the second space K2. The second inflow port 65 is always connected to the second space K2 via the upper opening of the valve body 81. When the communication ports 92a and 92b do not overlap with either outflow port 53a or 53b, the valve body 81 (sliding wall 92) blocks communication between the internal space K and the outflow ports 53a and 53b.

[0109] Figure 10 It is a plan view of the control valve 5 in the second state, shown through the cover 32 .

[0110] like Figure 10 As shown, the second state is a state in which the first inlet 53c and the second outlet 53b communicate with each other through the first space K1 and the second inlet 65 and the first outlet 53a communicate with each other through the second space K2.

[0111] In the second state, the first communication openings 92a are arranged circumferentially throughout the first inlet 53c and the second outlet 53b. Thus, the first inlet 53c and the second outlet 53b communicate with the first space K1 through the first communication openings 92a. If the first inlet 53c and the first outlet 53a communicate with the first space K1 in the first state, and the first inlet 53c and the second outlet 53b communicate with the first space K1 in the second state, a plurality of first communication openings 92a may be provided. Alternatively, the plurality of first communication openings 92a may be configured so that in the first state, only one communicates with the first inlet 53c and the first outlet 53a, and in the second state, only one communicates with the first inlet 53c and the second outlet 53b.

[0112] In the second state, the second communication port 92b overlaps with the first outlet 53a in a plan view, thereby connecting the first outlet 53a and the second space K2. The second inlet 65 is always connected to the second space K2 through the upper end opening of the valve body 81. The position and shape of the second communication port 92b can be modified as appropriate, as long as it is connected to the second outlet 53b in the first state and to the first outlet 53a in the second state.

[0113] <Force applying member 24> The biasing member 24 is, for example, a flat coil spring. It is coaxially positioned with the central axis O1 and sandwiched between the valve bottom wall 91 and the axial support portion 63a. The biasing member 24 is entirely located within the internal space K (the second space K2). The biasing member 24 is disposed within the rotating body 23. It is sufficient that the biasing member 24 is at least disposed within the rotating body 23.

[0114] The force-applying member 24 applies force to the valve body 81 downward. The sliding wall 92 is pressed against the support surface 53 by the force applied by the force-applying member 24. The radial support portion 63b is inserted into the inner side of the upper end portion of the force-applying member 24. The force-applying member 24 abuts against the radial support portion 63b from the radial direction, thereby limiting the radial movement relative to the housing 21. The large cylinder portion 86c is inserted into the inner side of the lower end portion of the force-applying member 24. The force-applying member 24 abuts against the large cylinder portion 86c from the radial direction, thereby limiting the radial movement relative to the housing 21. In this embodiment, the structure in which the force-applying member 24 is indirectly supported on the opposing wall 61 via the spring support portion 63 is described, but it is not limited to this structure. The force-applying member 24 may also be directly supported on the opposing wall 61.

[0115] [Operation method of control valve 5] Next, a description will be given of an operating method of the control valve 5. In the following description, the individual temperature adjustment mode and the combined mode will be described.

[0116] like Figure 1 In order to make the coolant circulate in the driving circuit 2 and the non-driving circuit 3 respectively, the rotating body 23 is set to Figure 9 The first state is shown. In the first state, the coolant delivered by the first water pump 8 in the drive circuit 2 undergoes heat exchange in the drive motor 7 before flowing into the first space K1 through the first inlet 53c and the first communication port 92a. The coolant that has flowed into the first space K1 returns to the drive circuit 2 through the first communication port 92a and the first outlet 53a, and is then delivered downstream again by the first water pump 8 in the drive circuit 2.

[0117] In the non-driving circuit 3, the coolant delivered by the second water pump 10 undergoes heat exchange with the battery 11 before flowing into the second space K2 through the second inlet 65 and the upper opening of the valve body 81. The coolant flowing into the second space K2 returns to the non-driving circuit 3 through the second communication port 92b and the second outlet 53b, where it is again delivered downstream through the non-driving circuit 3 by the second water pump 10. In the individual temperature control mode, the coolant flowing into the internal space K through the first inlet 53c and the second inlet 65 is blocked by the partition 93, flowing out of the corresponding outlets 53a and 53b without merging. The individual temperature control mode can also operate only one of the driving circuit 2 and the non-driving circuit 3 (the first water pump 8 and the second water pump 10).

[0118] In order to switch from the individual temperature control mode to the combined mode, the rotating body 23 is switched from the first state to the Figure 10 The second state is shown. Specifically, the drive unit 22 is driven to rotate the rotating body 23 about the central axis O1. At this time, the outer peripheral surface of the sliding wall 92 of the rotating body 23 slides on the support surface 53 while rotating about the central axis O1. Furthermore, when the first inlet 53c and the second outlet 53b are connected through the first space K1, and the second inlet 65 and the first outlet 53a are connected through the second space K2, the rotation of the rotating body 23 stops.

[0119] In combined mode, the coolant circulates through the control valve 5 between the drive circuit 2 and the non-drive circuit 3. Specifically, in the drive circuit 2, the coolant delivered by the first water pump 8 undergoes heat exchange with the drive motor 7 before flowing into the first space K1 through the first inlet 53c and the first connecting port 92a. The coolant flowing into the first space K1 flows out into the non-drive circuit 3 through the first connecting port 92a and the second outlet 53b. The coolant flowing out into the non-drive circuit 3 is delivered downstream by the second water pump 10, where it undergoes heat exchange with the battery 11. The coolant then flows into the second space K2 through the second inlet 65 and the upper opening of the valve body 81. The coolant flowing into the second space K2 flows out into the drive circuit 2 through the second connecting port 92b and the first outlet 53a. Thereafter, the coolant is sent to the downstream side by the first water pump 8, and performs heat exchange with the driving motor 7. Then, the coolant flows into the first space K1 again.

[0120] As described above, in the control valve 5 of this embodiment, the rotor 23 includes the valve body 81 whose outer diameter gradually increases upward from the shaft portion 80 , and the outer peripheral surface of the valve body 81 is slidably supported by the housing 21 .

[0121] According to this structure, the valve body 81 is directly supported by the housing 21, so no additional sealing member or bearing is required. Therefore, the number of parts and assembly man-hours can be reduced, and the control valve 5 can be miniaturized and reduced in cost.

[0122] The valve body 81 is formed into a tapered shape. Therefore, if the outer diameter of the rotor 23 expands or contracts due to heat, the rotor 23 will displace axially on the support surface 53 in accordance with the increase or decrease in outer diameter. Therefore, regardless of the expansion or contraction of the rotor 23, the valve body 81 is stably supported on the support surface 53. Consequently, the operational stability of the control valve 5 can be ensured.

[0123] In particular, in the control valve 5 of this embodiment, the rotating body 23 is configured to rotate between a first state and a second state. The first state refers to a state in which the first inlet 53c and the first outlet 53a are connected via the first space K1, and the second inlet 65 and the second outlet 53b are connected via the second space K2. The second state refers to a state in which the first inlet 53c and the second outlet 53b are connected via the first space K1, and the second inlet 65 and the first outlet 53a are connected via the second space K2.

[0124] This configuration, by providing a control valve 5 between the two circuits, allows the circuits to be switched between an individual temperature control mode, in which the coolant circulates independently in each circuit, and a combined mode, in which the coolant circulates simultaneously in both circuits. Furthermore, in this embodiment, the first space K1 opens downward, while the second space K2 opens upward, making it easier to maintain uniform hydraulic pressure within each space K1 and K2. Thus, while ensuring sealing between the valve body 81 and the support surface 53, excessive sliding resistance is suppressed, enabling smooth rotation of the rotating body 23.

[0125] In the control valve 5 of this embodiment, the first outlet 53a and the second outlet 53b are arranged at positions opposing each other in the first direction, and the first inlet 53c and the second inlet 65 are arranged at positions opposing each other in the second direction.

[0126] According to this configuration, the outlets 53a and 53b and the inlets 53c and 65 are arranged in different directions in the radial direction, so that handling of the piping becomes easy.

[0127] In the control valve 5 of the present embodiment, the volume of the second space K2 is larger than the volume of the first space K1 .

[0128] According to this structure, it is easy to ensure the hydraulic pressure acting on the second space K2. Therefore, it is easy to press the valve body 81 toward the support surface 53, so the sealing performance between the valve body 81 and the support surface 53 can be improved.

[0129] The control valve 5 of the present embodiment is configured such that the valve body 81 extends linearly outward in the radial direction as it moves from the bottom toward the top in a cross-sectional view along the axial direction.

[0130] For example, if the valve body 81 is formed in an arcuate cross-sectional shape, the orientation of the tangential line of the outer peripheral surface of the valve body 81 varies depending on the axial position. In this case, when the valve body 81 contracts due to heat, the deformation behavior varies depending on the axial position of the valve body 81. Specifically, the amount of radially inward deformation increases as the valve body 81 moves upward (as the tangential line inclination increases), making it difficult to ensure sealing between the support surface 53 and the valve body 81.

[0131] In contrast, as in this embodiment, the cross-sectional shape of the valve body 81 is formed into a linear shape, making it easier to maintain uniform deformation of the valve body 81 due to thermal contraction throughout the entire axial direction. As a result, the valve body 81 is stably supported on the support surface 53 regardless of the expansion and contraction of the rotor 23. Therefore, the operational stability of the control valve 5 can be ensured.

[0132] In the control valve 5 of the present embodiment, the valve body 81 is configured such that the angle θ2 formed between radially opposing portions thereof is set to 90°<θ2<180°.

[0133] According to this configuration, by making the angle θ2 larger than 90°, when the outer diameter of the rotor 23 expands or contracts due to heat, the rotor 23 can more smoothly displace on the support surface 53 in accordance with the increase or decrease in the outer diameter. Therefore, regardless of the expansion or contraction of the rotor 23, the valve body 81 is stably supported on the support surface 53. Consequently, the operational stability of the control valve 5 can be ensured.

[0134] Furthermore, by setting the angle θ2 within the range of 110°<θ2<160°, it is possible to suppress excess volume during forming, thereby achieving further miniaturization in the axial direction.

[0135] The control valve 5 in the present embodiment is configured such that the second inlet 65 and the second outlet 53 b are connected to the non-driving circuit 3 that supplies fluid to a non-driving source of the vehicle.

[0136] This configuration makes it easier to maintain the hydraulic pressure in the second space K2 when the vehicle's power is off and the coolant circulates only through the non-drive circuit 3. This makes it easier to press the valve body 81 against the support surface 53, thereby improving the sealing performance between the valve body 81 and the support surface 53.

[0137] (Other deformation examples) While preferred embodiments of the present disclosure have been described above, the present disclosure is not limited to these embodiments. Additions, omissions, substitutions, and other modifications may be made without departing from the spirit of the present disclosure. The present disclosure is limited only by the appended claims and not by the foregoing description.

[0138] For example, in the above-described embodiment, the control valve 5 is described as being mounted in the cooling system 1 of the vehicle. However, the present invention is not limited to this configuration and may be mounted in other systems.

[0139] In the above embodiment, the configuration including two outflow ports 53a and 53b has been described, but the present invention is not limited to this configuration and three or more outflow ports may be provided.

[0140] In the above embodiment, the outflow ports 34 and 35 are described as being integrally formed with the base portion 33 , but the present invention is not limited to this configuration. The outflow ports 34 and 35 may be formed separately from the base portion 33 .

[0141] In the above embodiment, the second inlet 65 is described as always communicating with the internal space K. However, the present invention is not limited to this configuration. The second inlet 65 may also be configured to switch between communication and interruption with the internal space K in accordance with the rotation of the rotating body 23 .

[0142] In the above embodiment, the valve body 81 is described as extending linearly in cross-sectional view, but the present invention is not limited to this configuration. The valve body 81 may also be extended in an arc shape in cross-sectional view.

[0143] In the above embodiment, the biasing member 24 is provided in the internal space K. However, the present invention is not limited to this configuration. The position of the biasing member can be appropriately changed as long as the valve body 81 is pressed toward the support surface 53. The biasing member is not an essential configuration.

[0144] In the above embodiment, the second inlet 65 is formed in the cover 32 , but the present invention is not limited to this configuration. The second inlet may be formed in the case body 31 .

[0145] In the above embodiment, the volume of the second space K2 is larger than the volume of the first space K1, but the present invention is not limited to this configuration. The volume of the second space K2 may be smaller than or equal to the volume of the first space K1.

[0146] Furthermore, within the scope not departing from the spirit of the present disclosure, components of the above-described embodiments may be appropriately replaced with known components, and the above-described modified examples may be appropriately combined.

[0147] Description of Reference Numerals 3: Non-driving circuit 5: Control valve 21: Shell 23: Rotating body 53: Support surface 53a: 1st outflow port 53b: Second outflow port 53c: First inlet 65: Second inlet 80: shaft 81: Valve body 92a: First communication port 92b: Second communication port 93: Divider K1: Space 1 K2: The Second Space O1: Central axis θ2: angle.

Claims

1. A control valve comprising: a housing having a first inlet and a second inlet through which a fluid flows in from the outside, and a first outlet and a second outlet through which the fluid flows out to the outside; and The rotating body includes a shaft portion located on a first side in the axial direction and rotatably supported by the housing, and a valve body forming an internal space whose outer diameter gradually increases from the shaft portion toward a second side in the axial direction, wherein the outer peripheral surface of the valve body is slidably supported on a support surface formed on the housing. A first communication port and a second communication port are formed at different positions around the central axis of the rotating body in the valve body so as to communicate between the inside and outside of the internal space. The valve body includes a partition portion that partitions the internal space into a first space that communicates with the first communication port and opens to the first side in the axial direction, and a second space that communicates with the second communication port and opens to the second side in the axial direction. The rotating body rotates between a first state and a second state, wherein the first state is a state in which the first inlet and the first outlet are connected through the first space and the second inlet and the second outlet are connected through the second space, and the second state is a state in which the first inlet and the second outlet are connected through the first space and the second inlet and the first outlet are connected through the second space.

2. The control valve according to claim 1, wherein The first outflow port and the second outflow port are arranged at positions facing each other in a first direction in a radial direction intersecting the axial direction. The first inlet and the second inlet are arranged at positions facing each other in a second direction intersecting with the first direction when viewed from the axial direction.

3. The control valve according to claim 1 or claim 2, wherein: The volume of the second space is larger than the volume of the first space.

4. The control valve according to claim 1 or claim 2, wherein: The valve body extends linearly toward an outer side in a radial direction intersecting the axial direction as it moves from a first side toward a second side in the axial direction in a cross-sectional view along the axial direction.

5. The control valve according to claim 1 or claim 2, wherein: In a cross-sectional view along the axial direction, portions of the valve body that are opposed to each other in a radial direction intersecting the axial direction form an angle that is larger than 90° and smaller than 180°.

6. The control valve according to claim 1 or claim 2, wherein: The second inlet and the second outlet are connected to a non-driving circuit that supplies fluid to non-driving equipment in a vehicle.

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