Cooling device

Abstract

In the cooling device, a main body can be in thermal contact with a heat source and has a flow path for a refrigerant. The protruding portion protrudes from one surface of the main body to one side in a predetermined direction, and has a hole extending from an end portion on one side in the predetermined direction to the flow path. The joint is inserted into the hole and has a flow path connected to the flow path of the main body. The restricting member is fixed to the end portion and restricts movement of the joint. The substrate is disposed on one surface. The leakage sensor is mounted on the substrate and can detect liquid leakage. The substrate has a first portion on one surface and around the protruding portion. The restricting member has a second portion protruding from an end portion of the protruding portion in an intersecting direction intersecting the predetermined direction on one side of the first portion in the predetermined direction.

Description

Technical Field

[0001] The present disclosure relates to a cooling device. Background Art

[0002] The following patent document describes a cooling module equipped with a liquid detector as an example of a cooling device (for example, refer to Patent Document 1). Prior Art Documents Patent Documents

[0003] Patent Document 1: US Patent No. 11725890 Specification Summary of the Invention

[0004] Generally, regarding a cooling device, it is necessary to suppress breakage of components.

[0005] An object of the present disclosure is to provide a cooling device capable of suppressing breakage of components.

[0006] A cooling device according to one aspect of the present disclosure includes a main body, a protruding portion, a joint, a restricting member, a substrate, and a leakage sensor. The main body can be in thermal contact with a heat source and has a refrigerant flow path. The protruding portion protrudes from one surface of the main body in a predetermined direction, and has a hole from an end on the predetermined direction side to the flow path. The joint is inserted through the hole and has a flow path connected to the flow path of the main body. The restricting member is fixed to the end portion to restrict movement of the joint. The substrate is disposed on the one surface. The leakage sensor is mounted on the substrate and can detect liquid leakage. The substrate has a first portion disposed on the one surface and around the protruding portion. The restricting member has a second portion that protrudes from the end portion of the protruding portion in a direction crossing the predetermined direction on a side closer to the predetermined direction than the first portion.

[0007] According to the exemplary disclosure, breakage of components can be suppressed. Brief Description of the Drawings

[0008] Figure 1 is a perspective view of a cooling device according to an embodiment. Figure 2 is a top view of the cooling device shown Figure 1 when viewed from one side Z1 of the first direction. Figure 3 is a top view of the cooling device shown Figure 1 when viewed from the other side Z2 of the first direction. Figure 4 is a side view of the cooling device shown Figures 1 to 3 when viewed from one side Y1 of the third direction. Figure 5 is a view along the direction of arrow AO1 when viewed from the arrow AO1 sideFigure 2 A cross-sectional view of a longitudinal section of a cooling device of line V-V shown. Figure 6 Viewed from one side Z1 of the first direction Figure 1 A schematic top view of a plurality of substrates 5 shown. Figure 7 Viewed from one side Z1 of the first direction Figure 1 A top view of the cold plate 13 shown. Figure 8 Is Figure 1 A side view of the joint 3 shown. Figure 9 Is Figure 1 A top view of the restricting member 4 shown. Figure 10 Is a schematic diagram showing the additional effect of the second part 41. Figure 11 Is a perspective view of a cooling device of a modified example. Detailed implementation mode

[0009] [Embodiment] Hereinafter, with reference to the accompanying drawings, exemplary embodiments of the present disclosure will be described. In addition, the same or corresponding parts in the drawings are denoted by the same reference numerals, and repeated description will not be given.

[0010] In the embodiment, for ease of understanding, the first direction Z, the second direction X, and the third direction Y that intersect each other are appropriately described. In each embodiment, the term "intersect" includes lines intersecting each other, planes intersecting each other, or lines and planes intersecting at right angles to each other and intersecting non-right-angled within a slight difference. The slight difference is a concept including tolerance and error, for example.

[0011] One side and the other side of the first direction Z are respectively described as the first direction one side Z1 and the first direction the other side Z2. One side and the other side of the second direction X are respectively described as the second direction one side X1 and the second direction the other side X2. One side and the other side of the third direction Y are respectively described as the third direction one side Y1 and the third direction the other side Y2.

[0012] Figure 1 Is a perspective view of a cooling device 100 showing an embodiment. Figure 2 And Figure 3 Viewed from one side Z1 of the first direction and the other side Z1 of the first direction Figure 1 A top view of the cooling device 100 shown. Figure 4 Viewed from one side Y1 of the third direction Figures 1 to 3 A side view of the cooling device 100 shown. Figure 5 Viewed from the arrow AO1 side alongFigure 2 Cross-sectional view of a longitudinal section of the cooling device 100 along the line V-V shown.

[0013] As Figures 1 to 5 As shown, the cooling device 100 includes a main body 1, at least one protrusion 2, at least one joint 3, at least one restricting member 4, at least one substrate 5, a leakage sensor 6, and a controller 7.

[0014] The main body 1 can be in thermal contact with a heat source 200 (refer to Figure 4 ), and has a refrigerant flow path 11 (refer to Figure 5 ). The protrusion 2 protrudes from one surface 12 of the main body 1 in a first direction Z1. The first direction Z1 is an example of the "prescribed direction" in the present disclosure. The protrusion 2 has a hole 22 leading from an end 21 of the protrusion 2 on the first direction Z1 side to the flow path 11 of the main body 1 (refer to Figure 5 ). The joint 3 is inserted through the hole 22. The joint 3 has a flow path 31. The flow path 31 is connected to the flow path 11 of the main body 1. The restricting member 4 is fixed to the end 21 of the protrusion 2. The restricting member 4 restricts the movement of the joint 3. Specifically, the restricting member 4 restricts the movement of the joint 3 in the first direction Z1. The substrate 5 is disposed on one surface 12 of the main body 1 (refer to Figure 1 , etc.). The leakage sensor 6 is mounted on the substrate 5. The leakage sensor 6 can detect liquid leakage. Specifically, the leakage sensor 6 is schematically shown by a dashed line in Figure 1 , etc., and can detect liquid that may leak from the gap between the joint 3 and the protrusion 2. The substrate 5 has a first portion 51. The first portion 51 is the portion disposed on the one surface 12 and is the portion located around the protrusion 2. In the embodiment, the first portion 51 is the region surrounded by a dashed line in Figure 1 and Figure 2 . The restricting member 4 has a second portion 41 (refer to Figure 1 , Figure 9 , etc.). As shown in Figure 1 , etc., the second portion 41 protrudes from the end 21 of the protrusion 2 on the side closer to the first direction Z1 than the first portion 51. The second portion 41 protrudes in a cross direction that intersects the first direction Z. The cross direction is a direction parallel to the second direction X and the third direction Y.

[0015] According to the above structure, breakage of the components of the cooling device 100 can be suppressed. Specifically, when the restricting member 4 is fixed to the end 21 in the manufacturing process, the second portion 41 of the restricting member 4 is not likely to come into contact with the leakage sensor 6 and the first portion 51 of the substrate 5. Therefore, breakage of the leakage sensor 6 and the first portion 51, that is, the components of the cooling device 100, is suppressed.

[0016] As Figure 1As shown in the figure, etc., preferably, the end portion 21 is located on the Z1 side in the first direction, which is on the side closer to the substrate 5 than the substrate 5. Thus, the leakage sensor 6 and the substrate 5 are less likely to come into contact with the restricting member 4.

[0017] Preferably, the substrate 5 has a hole 52 through which the protruding portion 2 passes (refer to Figure 1 , etc.). Thus, the position of the substrate 5 relative to the protruding portion 2 can be easily determined.

[0018] Preferably, the first portion 51 and the second portion 41 face each other in the first direction Z. The movement of the leakage sensor 6 and the substrate 5 in the first direction Z is restricted by the restricting member 4.

[0019] Preferably, the restricting member 4 has a plurality of second portions 41. Thus, the movement of the leakage sensor 6 in the first direction Z can be further restricted.

[0020] In addition, in another embodiment, the number of the protruding portions 2, the joints 3, the restricting members 4, the substrates 5, and the leakage sensors 6 is plural. Thus, the leakage sensor 6 and the first portion 51 of each substrate 2 are protected by the second portion 41 of the corresponding restricting member 4.

[0021] Specifically, the main body 1 can be in thermal contact with a heat source 200 (refer to Figure 4 ) and has a refrigerant flow path 11 (refer to Figure 5 ). A plurality of protruding portions 2 protrude from one surface 12 of the main body 1 in the first direction Z1. The plurality of protruding portions 2 have holes 22 from the end portion 21 of the protruding portion 2 on the Z1 side in the first direction to the flow path 11 of the main body 1 (refer to Figure 5 ). A plurality of joints 3 are inserted through the plurality of holes 22. The plurality of joints 3 have flow paths 31. A plurality of restricting members 4 are fixed to the end portions 21 of the plurality of protruding portions 2. The plurality of restricting members 4 restrict the movement of the plurality of joints 3. A plurality of substrates 5 are arranged on one surface 12 of the main body 1 (refer to Figure 1 , etc.). A plurality of leakage sensors 6 are mounted on the plurality of substrates 5. The plurality of leakage sensors 6 can detect liquid leakage. Each of the plurality of substrates 5 has a first portion 51. The first portion 51 is a portion on the one surface 12 and is a portion located around the protruding portion 2. Each of the plurality of restricting members 4 has a second portion 41 (refer to Figure 1 , Figure 9 , etc.). As shown in Figure 1 , etc., each second portion 41 protrudes from the end portion 21 of the protruding portion 2 on the Z1 side in the first direction, which is closer to the first direction Z1 than the first portion 51. The second portion 41 protrudes in a crossing direction that crosses the first direction Z.

[0022] The controller 7 controls the plurality of leakage sensors 6. Preferably, the controller 7 is mounted on one of the plurality of substrates 5. Since only one controller 7 is required, the manufacturing cost of the cooling device 100 can be suppressed.

[0023] Figure 6 as viewed from one side Z1 of the first direction Figure 1 The schematic top view of a plurality of substrates 5 shown. From the viewpoint of clarifying the substrate 5 and the leakage sensor 6, Figure 6 At least one joint 3 and at least one restricting member 4 are not shown. In addition, the outer shape of the protrusion 2 is shown by a dashed line. As Figure 6 shown, preferably, a controller 7 is mounted on one of the plurality of substrates 5, and an electrode 61 included in the leakage sensor 6 is formed. The controller 7 and the electrode 61 of the leakage sensor 6 are arranged on the same substrate 5. Thereby, compared with the case where the controller 7 and the electrode 61 are mounted on different substrates, the one surface 12 of the limited main body 1 can be utilized efficiently.

[0024] Preferably, the electrode 61 is formed on a part of the one surface 12 in one of the plurality of substrates 5 and around the protrusion 2. In the embodiment, the electrode 61 is formed in the first part 51. Preferably, the controller 7 is located at a position separated from the electrode 61 on the one surface 12 of one of the plurality of substrates 5. The formation range of the electrode 61 is limited around the protrusion 2 in the one surface 12. Therefore, the mounting area of the controller 7 can be easily secured on the substrate 5, and as a result, the substrate 5 is miniaturized.

[0025] Since the substrate 5 can be miniaturized, the following effects can be obtained. That is, interference with members and components provided on the one surface 12 can be suppressed. In addition, an identification or a mark can be displayed on the one surface 12, and therefore, the space of the one surface 12 can be utilized effectively.

[0026] Hereinafter, with reference to Figures 1 to 10 a more detailed structure of the cooling device 100 will be described. Figure 7 as viewed from one side Z1 of the first direction Figure 1 The top view of the cold plate 13 shown. Figure 8 is Figure 1 The side view of the joint 3 shown. Figure 9 is Figure 1 The top view of the restricting member 4 shown. Figure 10 The schematic view showing the additional effect of the second part 41.

[0027] As Figures 1 to 5 shown, the main body 1 includes a cold plate 13 and a cover 14.

[0028] The cold plate 13 is made of a highly heat-conductive material. As such a material, metals such as copper or aluminum are exemplified. In addition, the cold plate 13 can also be made of a precision ceramic containing aluminum nitride or silicon carbide.

[0029] The cold plate 13 has a substantially rectangular parallelepiped shape that is thin in the Z direction. Specifically, as Figure 4As shown, the cold plate 13 has a first surface 131 on the other side Z2 in the first direction. The first surface 131 can be in thermal contact with the heat source 200 (refer to Figure 4 ). In the embodiment, the first surface 131 intersects the first direction Z.

[0030] As Figures 3 to 5 shown, a heat grease 137 is coated on a specific portion 136 (refer to the dotted line in Figure 3 ) of the first surface 131. In Figure 3 , the specific portion 136 is the portion circled by a dotted line. Specifically, the heat grease 137 is coated on multiple parts of the specific portion 136. The heat grease 137 is a grease with high thermal conductivity. Thus, heat dissipation from the heat source 200 can be promoted.

[0031] Specifically, the heat source 200 (refer to Figure 4 ) is an electronic component. An electronic component is a component that constitutes an electronic device, and includes, for example, a central processing unit (so-called CPU), an electrolytic capacitor, a power semiconductor module, or a printed circuit board. The electronic component operates and generates heat due to power supply. The above-mentioned electronic component is cooled by the cooling device 100. The heat source 200 can also be an electronic device. The electronic device is a rack-mounted server or a blade server. The electronic device can also be other projectors, personal computers, or displays.

[0032] As Figure 7 shown, the cold plate 13 has a second surface 132 on one side Z1 in the first direction. The second surface 132 is substantially parallel to the first surface 131.

[0033] The cold plate 13 has a bottomed recess 133 that is recessed from the central portion of the second surface 132 toward the first surface 131. The recess 133 has an opening 134 that opens toward one side Z1 in the first direction. In the recess 133, multiple fins 135 protrude from the bottom toward one side Z1 in the first direction. The multiple fins 135 extend in the first direction Z and the second direction X. By having the fins 135, the cooling performance of the cooling device 100 is improved compared to the case without fins 135.

[0034] As Figure 1 and Figure 2 shown, the cover 14 is made of resin, for example. The cover 14 is not limited to resin and can also be made of metal, for example.

[0035] The cover 14 has a substantially rectangular parallelepiped shape that is thinner in the Z direction. Specifically, as Figure 5 shown, in a state where the opening 134 is blocked, the cover 14 is fixed by multiple fixing members 141 (refer to Figure 3)It is fixed to the cold plate 13. The plurality of fixing members 141 are respectively screws. The concave portion 133 of the cold plate 13 and the cover 14 divide the flow path 11 in the main body 1. In addition, in Figure 3 only one screw is labeled with the reference symbol "141".

[0036] As Figure 5 shown, specifically, the flow path 11 is a space through which the refrigerant can flow. The refrigerant is, for example, a coolant. As the coolant, for example, antifreeze or pure water is exemplified. A typical example of antifreeze is an ethylene glycol aqueous solution or a propylene glycol aqueous solution.

[0037] As Figure 1 and Figure 2 shown, at least one protrusion 2 is two protrusions 2. In addition, the number of protrusions 2 may also be other than two. The holes 22 reaching the flow path 11 (refer to Figure 5 ) extend from the end portions 21 of the respective protrusions 2. In addition, each end portion 21 has a flat surface extending in the second direction X and the third direction Y. Each hole 22 is, for example, circular when viewed from one side Z1 in the first direction.

[0038] The joint 3 is provided corresponding to the protrusion 2. Therefore, in the embodiment, the number of joints 3 is two. In the embodiment, each joint 3 is a pipe joint of the same specification as each other. However, it is not limited thereto, and each joint 3 may also be a pipe joint of different specifications from each other.

[0039] As Figure 8 shown, each joint 3 has an inlet / outlet 32, a main body 33, and an inlet / outlet 34 in addition to the above-mentioned flow path 31.

[0040] The inlet / outlet 32 is a tubular portion inserted into the hole 22. The inlet / outlet 32 extends along the first direction Z in a state of being inserted into the hole 22. The outer peripheral surface of the inlet / outlet 32 is substantially cylindrical and has an outer diameter smaller than the diameter of the hole 22 formed in the protrusion 2. The inlet / outlet 32 has three flanges 321, 322, and 323 on the outer peripheral surface of the inlet / outlet 32.

[0041] The flanges 321 to 323 project from the outer peripheral surface of the inlet / outlet 32 toward the radial direction r1 of the inlet / outlet 32. The flanges 321 to 323 are plate-shaped and thinner in the first direction Z and extend in the circumferential direction θ1 of the inlet / outlet 32. Each of the flanges 321 to 323 is circular when viewed from the first direction Z. Each of the flanges 321 to 323 has substantially the same size as the hole 22 in the radial direction r1.

[0042] Among the flanges 321 to 323, the flange 321 is located at the position closest to the other side Z2 in the first direction, and the flange 323 is located at the position closest to the one side Z1 in the first direction. The flange 323 is located between the flanges 321 and 323. In addition, the flange 322 is located at a position spaced apart from the flange 321 in the first direction Z and at a position spaced apart from the flange 323 in the first direction Z. An O-ring 324 is installed between the flanges 321 and 322, and an O-ring 325 is installed between the flanges 322 and 323. The O-rings 324 and 325 have an outer diameter larger than the diameter of the hole 22 in the radial direction r1. Therefore, in a state where the inlet / outlet 32 is inserted into the hole 22, each of the O-rings 324 and 325 is in close contact with the peripheral surface of the hole 22.

[0043] In a state where the inlet / outlet 32 is inserted into the hole 22, the flow path 31 is connected to the flow path 11 in such a manner that the refrigerant can flow. In addition, when the inlet / outlet 32 is inserted into the hole 22, the end surface on the one side Z1 in the first direction of the flange 323 and the end surface on the one side Z1 in the first direction of the protrusion 2 (i.e., the end portion 21) are substantially coplanar. In the embodiment, the term coplanar means that a plurality of surfaces are substantially parallel without steps with respect to each other.

[0044] The main body 33 is connected to the end portion 326 on the one side Z1 in the first direction of the inlet / outlet 32 at the base end portion 331. The main body 33 extends from the base end portion 331 in a direction intersecting the first direction Z.

[0045] The inlet / outlet 34 is connected to the front end portion 332 of the main body 33 at the base end 341 of the inlet / outlet 34. The front end portion 332 is the end portion of the main body 33 on the side opposite to the base end portion 331.

[0046] The inlet / outlet 34 protrudes straight from the front end portion 332 of the main body 33. The inlet / outlet 34 is tubular. A refrigerant pipe (not shown) is installed on the inlet / outlet 34. In addition, on the outer peripheral surface of the inlet / outlet 34, protrusions 342 are formed so that the refrigerant pipe is not easily detached.

[0047] The flow path 31 penetrates the inlet / outlet 32, the main body 33, and the inlet / outlet 34 from the end portion 327 on the other side Z2 in the first direction of the inlet / outlet 32 and reaches the front end 343 of the inlet / outlet 34.

[0048] In addition, in the embodiment, the main body 33 and the inlet / outlet 34 extend in directions different from the inlet / outlet 32. However, it is not limited thereto, and the main body 33 and the inlet / outlet 34 may extend in the same direction as the inlet / outlet 32 (i.e., the first direction Z).

[0049] As Figure 1 and Figure 2As shown, the restricting member 4 is provided corresponding to the protrusion 2. Therefore, in the embodiment, the number of restricting members 4 is two. In the embodiment, each restricting member 4 has the same shape as each other. However, this is not limited thereto, and each restricting member 4 may also have different shapes from each other.

[0050] The restricting member 4 is in a plate shape that is thinner in the first direction Z while being fixed to the end portion 21 (see Figure 4 ). Specifically, the dimension of the restricting member 4 in the first direction Z is the same as or smaller than the distance in the first direction Z between the flange 323 and the main body 33.

[0051] As Figure 9 shown, in addition to the above-described second portion 41, the restricting member 4 also has a U-shaped cutout 42. Specifically, the cutout 42 has an arc portion 421 and two straight portions 422 when viewed from above in the first direction Z. The arc portion 421 is an arc shape with a central angle of 180° and a diameter substantially the same as that of the inlet / outlet 32. The two straight portions 422 extend from both ends of the arc portion 421. The two straight portions 422 are substantially parallel to each other.

[0052] In a state where the joint 3 is inserted through the hole 22, the cutout 42 of the restricting member 4 is inserted into the flange 323 (see Figure 8 ) and between the end portion 21 and the main body 33 (see Figure 8 ). As a result, the outer peripheral surface of the end portion 326 (see Figure 8 ) is surrounded by the arc portion 421 and the two straight portions 422. The restricting member 4 (see Figure 10 ) is fastened to the end portion 21 of the protrusion 2 by two screws 414. Thereby, the movement of the joint 3 in the first direction Z is prevented. Specifically, it is possible to suppress the movement of the joint 3 in the first direction Z and to enable the rotation of the joint 3 in the circumferential direction θ1 (see Figure 8 ). Thereby, the orientation of the front end of the inlet / outlet 34 can be adjusted. As a result, it is easy to wind a tube (not shown) connected to the inlet / outlet 34 of the joint 3.

[0053] In the embodiment, there are two second portions 41. Each second portion 41 is located on both sides of the cutout 42. Here, the two second portions 41 are located at positions opposite to each other with the inlet / outlet 32 of the joint 3 interposed therebetween (also see Figure 10 ). In addition, the distance D01 between one protruding end of the second portion 41 and the other protruding end of the second portion 41 (also see Figure 10 ) is larger than the diameter φ01 of the hole 52 formed in the substrate 5 (see Figure 10 ). Therefore, even when the substrate 5 moves, at least one of the second portions 41 faces the substrate 5. Therefore, the substrate 5 is not easily detached from the protrusion 2.

[0054] In an embodiment, as Figure 1 and Figure 2 shown, the substrate 5 is provided corresponding to the protrusion 2. Therefore, the number of substrates 5 is two. The two substrates 5 may have the same shape as each other or may have different shapes from each other.

[0055] Each substrate 5 has a first portion 51 around the corresponding protrusion 2 (refer to Figure 6 ). A pair of two electrodes 61 are formed on each first portion 51, for example, by printing. Each electrode 61 is substantially in an annular shape. In each first portion 51, one electrode 61 is located at a position along the outer peripheral surface of the protrusion 2, and the other electrode 61 is located at a position spaced apart from the one electrode 61 outside the one electrode 61. That is, the pair of two electrodes 61 are electrically insulated. In addition, the pair of two electrodes 61 are formed only around the protrusion 2. Thereby, the substrate 5 is further miniaturized.

[0056] The controller 7 is mounted on one of the substrates 5 (that is, one of the two substrates 5) and is electrically connected to the pair of two electrodes 61 of each substrate 5.

[0057] In addition, in addition to the controller 7 and the pair of two electrodes 61, a connector 71 electrically connected to the electrode 61 is also mounted on one of the two substrates 5. In addition, a wiring 72 for connecting the controller 7 and the connector 71 is formed on one substrate 5.

[0058] Similarly, in the other substrate 5 as well, in addition to the pair of two electrodes 61, a connector 71 electrically connected to the electrode 61 is also mounted. In addition, a wiring 73 for connecting the electrode 61 and the connector 71 is formed on the other substrate 5.

[0059] In addition, the connectors 71 are electrically connected to each other through a wiring 74.

[0060] In addition, when the cooling device 100 includes three or more substrates 5, the electrodes 61 mounted on each substrate 5 are electrically connected to the controller 7 via the connectors 71 mounted on the same substrate 5.

[0061] In addition, when the cooling device 100 does not include the leakage sensor 6, the controller 7 and the like may also be the objects of waterproof treatment such as molding. Thereby, failures of the controller 7 and the like can be prevented.

[0062] As Figure 5 and Figure 8 shown, the refrigerant flows into the flow path 31 from the front end 343 of one of the two connectors 3 (refer to Figure 5The arrow A11) flows through the flow path 31 and exits from one end 327 of the joint 3 (see arrow A12). Then, the refrigerant flows in the flow path 11 along the fins 135 in the first direction X1 and the second direction X2 (see Figure 5 arrows A13, A14), and enters the flow path 31 of the other joint 3 from the end 327 of the other joint 3 (see arrow A15). Then, the refrigerant flows through the flow path 31 of the other joint 3 and exits from the front end 343 of the other side of the joint 3 (see arrow A16). During the process of the refrigerant flowing through the flow path 11, heat exchange occurs between the refrigerant and the heat source 200. As a result, the heat source 200 is cooled.

[0063] According to the present embodiment, a cooling device 100 capable of easily detecting liquid leakage from the joint 3 can be provided. Specifically, in the cooling device 100, for example, the refrigerant may leak from the gap between the hole 22 of the protrusion 2 and the flange 323 of the joint 3. The leaked refrigerant sometimes flows along the end 21 and the outer peripheral surface of the protrusion 2 to between the two electrodes 61 formed on each substrate 5. The controller 7 measures the resistance value between the two electrodes 61 formed on each substrate 5. When the refrigerant flows between the two electrodes 6 and the resistance value becomes below the reference value, the controller 7 detects liquid leakage. It is also conceivable that the refrigerant leaks from other parts in addition to the gap between the hole 22 and the flange 323 and reaches between the two electrodes 61. Therefore, the leakage sensor 6 can detect not only liquid leakage from the gap between the hole 22 and the flange 323 but also liquid leakage from other parts. In addition, the width of the liquid leakage detection area of the leakage sensor 6 can be appropriately adjusted by appropriately changing the area occupied by the electrode 61 in the substrate 5 and / or the shape of the electrode 61.

[0064] In addition, in the absence of the second part 41, the refrigerant leaking from the gap between the protrusion 2 and the joint 3 may penetrate along the outer peripheral surface of the protrusion 2 into the gap between the substrate 5 and the protrusion 2. As a result, the detection of liquid leakage in the controller 7 may be delayed. In contrast, as Figure 10 shown, in the case of having the second part 41, the refrigerant is likely to stay at the corner C01 of the protrusion 2 and the second part 41 due to surface tension. That is, the refrigerant is not likely to penetrate into the gap between the substrate 5 and the protrusion 2. Therefore, the refrigerant is likely to flow between the two pairs of electrodes 61. Thus, the detection accuracy of liquid leakage in the controller 7 is improved. Furthermore, even when a small amount of refrigerant leaks from the gap, the controller 7 can detect liquid leakage through the leakage sensor 6.

[0065] [Modification Example] Figure 11 is a perspective view of a cooling device 300 showing a modification example of the embodiment. AsFigure 11 As shown, the cooling device 300 is different from the cooling device 100 shown in Figure 1 that it has a single substrate 9 instead of multiple substrates 5. The substrate 9 is disposed on one surface 12 and has a plurality of holes 91 through which a plurality of protrusions 2 pass. Since only one substrate is required, the assembly operation of the cooling device 300 is simplified.

[0066] In addition, the substrate 9 is different from the substrate 5 in that it has a first portion 51 around each hole 91 and in that the substrate 9 extends over substantially the entire area (i.e., a relatively large area) of the one surface 12. Since the substrate 9 extends over a large area, the electrodes 61 of the leakage sensor 6 can also be formed over a large area on the substrate 9. As a result, the liquid leakage detection accuracy of the controller 7 is further improved.

[0067] In addition, for ease of understanding of the present disclosure, the drawings schematically show each structural element as the main body, and for ease of drawing, the thickness, length, number, interval, etc. of each structural element shown may be different from the actual ones. In addition, the structures of the respective structural elements shown in the above-described embodiments are examples and are not particularly limited, and it goes without saying that various changes can be made without substantially departing from the effects of the present disclosure.

[0068] In the embodiment and the modification, the mounting surface of the controller 7 on the substrates 5 and 9 is located at a position on the other side Z2 in the first direction from the end portion 21. However, this is not limiting, and the mounting surface of the controller 7 on the substrates 5 and 9 may also be located at a position on one side Z1 in the first direction from the end portion 21. However, in this case, it is necessary to project the second portion 41 from the restricting member 4 in the first direction Z and bend it in the second direction X or the third direction Y.

[0069] In addition, in the embodiment and the modification, the controller 7 can also transmit, that is, notify, the detection result of the liquid leakage to an external device of the cooling device 100 through wired communication or wireless communication.

[0070] In addition, the present technology can adopt the following structure.

[0071] (1) A cooling device, comprising: a main body that can be in thermal contact with a heat source and has a refrigerant flow path; a protrusion that protrudes from one surface of the main body in a predetermined direction and has a hole from an end portion on the one side in the predetermined direction to the flow path; a joint that is inserted through the hole and has a flow path connected to the flow path of the main body; a restricting member that is fixed to the end portion and restricts the movement of the joint; a substrate that is disposed on the one surface; and a leakage sensor that is mounted on the substrate and can detect liquid leakage, The substrate has a first portion that is disposed on the one surface and is around the protrusion. The restricting member has a second portion that protrudes from the end of the protrusion in a crossing direction crossing the specified direction on a side closer to the specified direction than the first portion.

[0072] (2) Based on the cooling device described in (1), the end is located at a position on a side closer to the specified direction than the substrate.

[0073] (3) Based on the cooling device described in (1) or (2), the substrate has a hole through which the protrusion penetrates.

[0074] (4) Based on the cooling device described in any one of (1) to (3), the first portion and the second portion face each other in the specified direction.

[0075] (5) Based on the cooling device described in any one of (1) to (4), the restricting member has a plurality of the second portions.

[0076] (6) A cooling device includes: a main body that can be in thermal contact with a heat source and has a flow path through which a refrigerant flows; a plurality of protrusions that protrude from one surface of the main body toward one side in a specified direction and have holes from ends on the one side in the specified direction to the flow path; a plurality of connectors that are inserted through the plurality of holes and have a plurality of flow paths connected to the flow path of the main body; a plurality of restricting members that are fixed to the plurality of ends and restrict movement of the plurality of connectors; a plurality of substrates that are disposed on the one surface; and a leakage sensor that is mounted on the plurality of substrates and can detect liquid leakage, the plurality of substrates each have a first portion on the one surface and around the protrusion, the plurality of restricting members each have: a second portion that protrudes from the ends of the plurality of protrusions in a crossing direction crossing the specified direction on a side closer to the specified direction than the first portion.

[0077] (7) Based on the cooling device described in (6), a controller is further included, which is mounted on one of the plurality of substrates and is used to control the leakage sensor.

[0078] (8) Based on the cooling device described in (6) or (7), electrodes of the leakage sensor are formed on one of the plurality of substrates.

[0079] (9) Based on the cooling device described in any one of (6) to (8), the electrode is formed on the one surface at one of the plurality of substrates and around the protruding portion. The controller is located at a position separated from the electrode on the one surface of one of the plurality of substrates.

[0080] (10) A cooling device includes: a main body that can be in thermal contact with a heat source and has a flow path through which a refrigerant flows; a plurality of protruding portions that protrude from one surface of the main body in a predetermined direction and have holes from an end portion on the one side of the predetermined direction to the flow path; a plurality of joints that are inserted through the plurality of holes and have a plurality of flow paths connected to the flow path of the main body; a plurality of restricting members that are fixed to the plurality of end portions to restrict movement of the plurality of joints; a substrate that is disposed on the one surface and has a plurality of holes through which the plurality of protruding portions pass through; and a leakage sensor that is mounted on the substrate and can detect liquid leakage, the substrate has a first portion on the one surface and around the protruding portion, each of the plurality of restricting members has: a second portion that protrudes from the end portions of the plurality of protruding portions in a crossing direction crossing the predetermined direction on a side closer to the predetermined direction than the first portion. Industrial applicability

[0081] The present disclosure can be used, for example, in a cooling device for cooling a server. Symbol description

[0082] 100 Cooling device 1 Main body 11 Flow path 12 One surface 2 Protruding portion 21 End portion 22 Hole 3 Joint 31 Flow path 4 Restricting member 41 Second portion 42 Cutout 5 Substrate 51 First portion 52 Hole 6 Leakage sensor 61 Electrode 7 Controller 200 Heat source 300 Cooling device 9 substrates 91 holes.

Claims

1. A cooling device, characterized in that: have: a main body capable of thermally contacting a heat source and having a flow path for a refrigerant; a protrusion that protrudes from one side of the main body toward a predetermined direction and has a hole extending from an end portion on one side of the predetermined direction to the flow path; a joint inserted into the hole and having a flow path connected to the flow path of the body; A limiting member, the limiting member being fixed to the end portion and limiting the movement of the joint; a substrate, the substrate being disposed on the one side; and a leakage sensor mounted on the substrate and capable of detecting liquid leakage, The substrate has a first portion, which is a portion disposed on the one surface and is located around the protruding portion. The restriction member includes a second portion that protrudes from the end portion of the protruding portion in a direction intersecting the predetermined direction and located closer to one side of the predetermined direction than the first portion.

2. The cooling device according to claim 1, characterized in that: The end portion is located on one side of the predetermined direction relative to the substrate.

3. The cooling device according to claim 1 or 2, characterized in that: The substrate has a hole through which the protrusion passes.

4. The cooling device according to claim 1 or 2, characterized in that: The first portion and the second portion are opposed to each other in the prescribed direction.

5. The cooling device according to claim 1 or 2, characterized in that: The restricting member has a plurality of the second portions.

6. A cooling device, characterized in that: have: a main body, the main body being capable of thermally contacting with a heat source and having a flow path for a refrigerant to flow; a plurality of protrusions, the plurality of protrusions protruding from one side of the main body in a predetermined direction and having holes extending from an end portion on one side of the predetermined direction to the flow path; a plurality of joints, the plurality of joints being inserted through the plurality of holes and having a plurality of flow paths connected to the flow path of the main body; A plurality of limiting members, wherein the plurality of limiting members are fixed to the plurality of end portions to limit the movement of the plurality of joints; A plurality of substrates, wherein the plurality of substrates are arranged on the one side; and a leakage sensor, the leakage sensor being mounted on a plurality of the substrates and capable of detecting liquid leakage, The plurality of substrates are respectively on the one surface and have a first portion around the protruding portion, Each of the plurality of restricting members includes a second portion that protrudes from the end portions of the plurality of protruding portions in a direction intersecting the predetermined direction and located closer to the first portion on one side of the predetermined direction.

7. The cooling device according to claim 6, characterized in that: A controller is also provided, and the controller is installed on one of the plurality of substrates and is used to control the leakage sensor.

8. The cooling device according to claim 7, characterized in that: The electrode included in the leakage sensor is formed on one of the plurality of substrates.

9. The cooling device according to claim 8, characterized in that: The electrode is formed on one of the plurality of substrates on the one surface and around the protrusion. The controller is located on the one surface of one of the plurality of substrates at a position separated from the electrode.

10. A cooling device, characterized in that: have: a main body, the main body being capable of thermally contacting with a heat source and having a flow path for a refrigerant to flow; a plurality of protrusions, the plurality of protrusions protruding from one side of the main body in a predetermined direction and having holes extending from an end portion on one side of the predetermined direction to the flow path; a plurality of joints, the plurality of joints being inserted through the plurality of holes and having a plurality of flow paths connected to the flow path of the main body; A plurality of limiting members, wherein the plurality of limiting members are fixed to the plurality of end portions to limit the movement of the plurality of joints; a substrate, the substrate being disposed on the one side and having a plurality of holes for the plurality of protrusions to penetrate; as well as a leakage sensor mounted on the substrate and capable of detecting liquid leakage, The substrate has a first portion on the one side and around the protrusion, Each of the plurality of restricting members includes a second portion that protrudes from the end portions of the plurality of protruding portions in a direction intersecting the predetermined direction and located closer to the first portion on one side of the predetermined direction.

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