Cooling device

Abstract

To prevent damage to parts.SOLUTION: In a cooling device 100, a main body 1 is capable of thermally contacting a heat source and has a flow path for a refrigerant. A protrusion 2 protrudes from one surface of the main body in one predetermined direction and has a hole that leads from an end 21 on one side of the predetermined direction to the flow path. A joint 3 is inserted into the hole and has a flow path 31 that connects to the flow path of the main body. A restricting member 4 is fixed to the end and restricts the movement of the joint. A substrate 5 is disposed on the one surface 12. A leak sensor 6 is mounted on the substrate and is capable of detecting liquid leakage. The substrate is on the one surface and has a first portion 51 around the protrusion. The restricting member has a second portion 41 that protrudes from the end of the protrusion on one side of the predetermined direction from the first portion in a cross direction that crosses the predetermined direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] The following patent documents disclose, as an example of a cooling device, a cooling module equipped with a liquid detector (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] U.S. Pat. No. 1,172,5890 Summary of the Invention [Problem to be solved by the invention]

[0004] In general, with respect to cooling devices, damage to components needs to be suppressed.

[0005] An object of the present disclosure is to provide a cooling device capable of suppressing damage to components. [Means for solving the problem]

[0006] A cooling device according to one aspect of the present disclosure includes a main body, a protrusion, a joint, a regulating member, a substrate, and a leak sensor. The main body is capable of thermal contact with a heat source and has a flow path for a refrigerant. The protrusion protrudes from one surface of the main body in a predetermined direction and has a hole extending from an end on the one side of 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 regulating member is fixed to the end and regulates movement of the joint. The substrate is disposed on the one surface. The leak sensor is mounted on the substrate and is capable of detecting a liquid leak. The substrate is disposed on the one surface and has a first portion around the protrusion. The regulating member has a second portion protruding from the end of the protrusion on the one side of the predetermined direction relative to the first portion in a cross direction intersecting the predetermined direction. Effect of the Invention

[0007] According to an exemplary disclosure, part breakage is reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a cooling device according to an embodiment. [Diagram 2] FIG. 2 is a plan view of the cooling device shown in FIG. 1 as viewed from one side in the first direction Z1. [Diagram 3] FIG. 3 is a plan view of the cooling device shown in FIG. 1 as viewed from the other first direction Z2 side. [Figure 4] FIG. 4 is a side view of the cooling device shown in FIGS. 1 to 3 as viewed from the one side in the third direction Y1. [Diagram 5] FIG. 5 is a vertical cross-sectional view of the cooling device taken along line VV shown in FIG. 2, viewed from the arrow A01 side. [Figure 6] FIG. 6 is a schematic plan view of the plurality of substrates 5 shown in FIG. 1 as viewed from the Z1 side in the first direction. [Figure 7] FIG. 7 is a plan view of the cold plate 13 shown in FIG. 1 as viewed from the Z1 side in the first direction. [Figure 8]FIG. 8 is a side view of the joint 3 shown in FIG. [Figure 9] FIG. 9 is a plan view of the restricting member 4 shown in FIG. [Figure 10] FIG. 10 is a schematic diagram showing the effect of adding the second portion 41. As shown in FIG. [Figure 11] FIG. 11 is a perspective view of a cooling device according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Embodiment] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and description thereof will not be repeated.

[0010] In the embodiments, for ease of understanding, a first direction Z, a second direction X, and a third direction Y that intersect with each other are described as appropriate. In each embodiment, the term "intersect" includes lines, surfaces, or a line and a surface intersecting with each other at a right angle, and intersecting at a non-right angle within a slight difference. The slight difference is a concept that includes, for example, tolerance and error.

[0011] The first direction Z is referred to as one side Z1 and the other side Z2 of the first direction. The second direction X is referred to as one side X1 and the other side X2 of the second direction. The third direction Y is referred to as one side Y1 and the other side Y2 of the third direction.

[0012] Fig. 1 is a perspective view showing a cooling device 100 according to an embodiment. Figs. 2 and 3 are plan views of the cooling device 100 shown in Fig. 1 as viewed from one side Z1 in the first direction and the other side Z2 in the first direction. Fig. 4 is a side view of the cooling device 100 shown in Figs. 1 to 3 as viewed from one side Y1 in the third direction. Fig. 5 is a cross-sectional view of the vertical section of the cooling device 100 taken along line VV shown in Fig. 2 as viewed from the arrow A01 side.

[0013] As shown in Figures 1 to 5, the cooling device 100 comprises a main body 1, at least one protrusion 2, at least one fitting 3, at least one regulating member 4, at least one substrate 5, a leak sensor 6, and a controller 7.

[0014] The main body 1 is capable of thermally contacting the heat source 200 (see FIG. 4) and has a flow path 11 (see FIG. 5) for the refrigerant. The protrusion 2 protrudes from one surface 12 of the main body 1 in one first direction Z1. The one first direction Z1 is an example of a "predetermined direction" in the present disclosure. The protrusion 2 has a hole 22 (see FIG. 5) that leads from an end 21 of the protrusion 2 on the one first direction Z1 side to the flow path 11 of the main body 1. 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. In detail, the restricting member 4 restricts the movement of the joint 3 in one first direction Z1. The substrate 5 is disposed on one surface 12 of the main body 1 (see FIG. 1, etc.). The leak sensor 6 is mounted on the substrate 5. The leak sensor 6 can detect liquid leakage. In detail, the leak sensor 6 is shown by a dashed line in FIG. 1 and the like, and can detect liquid that may leak from a gap between the joint 3 and the protruding portion 2. The substrate 5 has a first portion 51. The first portion 51 is a portion disposed on the one surface 12 and located around the protruding portion 2. In the embodiment, the first portion 51 is an area surrounded by dashed lines in FIG. 1 and FIG. 2. The restricting member 4 has a second portion 41 (see FIG. 1, FIG. 9, etc.). As shown in FIG. 1 and the like, the second portion 41 protrudes from the end portion 21 of the protruding portion 2 on the one side Z1 of the first direction than the first portion 51. The second portion 41 protrudes in an intersecting direction intersecting the first direction Z. The intersecting direction is a direction parallel to the second direction X and the third direction Y.

[0015] The above configuration suppresses damage to the components of the cooling device 100. In detail, when the restricting member 4 is fixed to the end portion 21 in the manufacturing process, the second portion 41 of the restricting member 4 is unlikely to come into contact with the leak sensor 6 and the first portion 51 of the substrate 5. Therefore, damage to the leak sensor 6 and the first portion 51, i.e., the components of the cooling device 100, is suppressed.

[0016] 1 and the like, the end portion 21 is preferably located on the one side in the first direction Z1 with respect to the substrate 5. This makes it difficult for the leak sensor 6 and the substrate 5 to come into contact with the restricting member 4.

[0017] The substrate 5 preferably has a hole 52 through which the protrusion 2 penetrates (see FIG. 1, etc.). This makes it possible to easily determine the position of the substrate 5 relative to the protrusion 2.

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

[0019] The restricting member 4 preferably has a plurality of second portions 41. This further restricts the movement of the leak sensor 6 in the first direction Z.

[0020] In another embodiment, there are a plurality of protrusions 2, joints 3, restricting members 4, substrates 5, and leak sensors 6. As a result, the leak sensors 6 and the first portions 51 of the substrates 5 are protected by the second portions 41 of the corresponding restricting members 4.

[0021] In detail, the main body 1 is capable of thermally contacting the heat source 200 (see FIG. 4) and has a flow path 11 (see FIG. 5) of the coolant. The multiple protrusions 2 protrude from one surface 12 of the main body 1 in one first direction Z1. The multiple protrusions 2 have holes 22 (see FIG. 5) that lead from the end 21 of the protrusion 2 on the one first direction Z1 side to the flow path 11 of the main body 1. The multiple joints 3 are inserted into the multiple holes 22. The multiple joints 3 have flow paths 31. The multiple regulating members 4 are fixed to the end 21 of the multiple protrusions 2. The multiple regulating members 4 regulate the movement of the multiple joints 3. The multiple boards 5 are arranged on the one surface 12 of the main body 1 (see FIG. 1, etc.). The multiple leak sensors 6 are mounted on the multiple boards 5. The multiple leak sensors 6 are capable of detecting liquid leakage. Each of the multiple boards 5 has a first portion 51. The first portion 51 is a portion on the one surface 12 and is located around the protruding portion 2. Each of the plurality of restricting members 4 has a second portion 41 (see Figs. 1, 9, etc.). As shown in Fig. 1, etc., each second portion 41 protrudes from the end portion 21 of the protruding portion 2 on the one side Z1 in the first direction relative to the first portion 51. The second portion 41 protrudes in an intersecting direction intersecting the first direction Z.

[0022] The controller 7 controls the multiple leak sensors 6. The controller 7 is preferably mounted on one of the multiple boards 5. Since only one controller 7 is required, the manufacturing cost of the cooling device 100 is reduced.

[0023] 6 is a schematic plan view of the multiple substrates 5 shown in FIG. 1 as viewed from one side Z1 in the first direction. In FIG. 6, in order to clarify the substrates 5 and the leak sensor 6, at least one joint 3 and at least one restricting member 4 are not shown. Also, the outline of the protrusion 2 is shown by a dashed line. As shown in FIG. 6, it is preferable that the controller 7 is mounted on one of the multiple substrates 5, and the electrodes 61 of the leak sensor 6 are formed. The controller 7 and the electrodes 61 of the leak sensor 6 are laid out on the same substrate 5. This allows the limited one surface 12 of the main body 1 to be used more efficiently than when the controller 7 and the electrodes 61 are mounted on different substrates.

[0024] The electrode 61 is preferably formed around the protrusion 2 on one surface 12 of one of the multiple substrates 5. In the embodiment, the electrode 61 is formed on the first portion 51. The controller 7 is preferably located away from the electrode 61 on the surface 12 of one of the multiple substrates 5. The area in which the electrode 61 is formed is limited to the periphery of the protrusion 2 on the surface 12. Therefore, the area in which the controller 7 is mounted can be easily secured on the substrate 5, and as a result, the substrate 5 can be made smaller.

[0025] The miniaturization of the substrate 5 also provides the following advantages. That is, it is possible to suppress interference with members and components provided on the surface 12. In addition, since a logo or mark can be displayed on the surface 12, the space of the surface 12 can be used effectively.

[0026] Hereinafter, a more detailed configuration of the cooling device 100 will be described with reference to Fig. 1 to Fig. 10. Fig. 7 is a plan view of the cold plate 13 shown in Fig. 1, viewed from one side Z1 in the first direction. Fig. 8 is a side view of the joint 3 shown in Fig. 1. Fig. 9 is a plan view of the restricting member 4 shown in Fig. 1. Fig. 10 is a schematic diagram showing the effect of adding the second portion 41.

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

[0028] The cold plate 13 is made of a highly thermally conductive material, such as a metal, such as copper or aluminum, or may be made of fine ceramics, such as aluminum nitride or silicon carbide.

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

[0030] 3 to 5, heat grease 137 is applied to a specific portion 136 (see the dashed line in FIG. 3) of the first surface 131. The specific portion 136 is the portion surrounded by the dashed line in FIG. 3. In detail, the heat grease 137 is applied to a plurality of locations of the specific portion 136. The heat grease 137 is a grease with high thermal conductivity. This promotes heat dissipation from the heat source 200.

[0031] In detail, the heat source 200 (see FIG. 4) is an electronic component. The 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 when powered and generates heat. Such an electronic component is cooled by the cooling device 100. The heat source 200 may be an electronic device. The electronic device may be a rack mount server or a blade server. The electronic device may also be a projector, a personal computer, or a display.

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

[0033] The cold plate 13 has a bottomed recess 133 recessed from the center of the second surface 132 toward the first surface 131. The recess 133 has an opening 134 that opens toward one side of the first direction Z1. A plurality of fins 135 protrude from the bottom of the recess 133 in one side of the first direction Z1. 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 a case where the fins 135 are not provided.

[0034] 1 and 2, the cover 14 is made of, for example, resin. The cover 14 is not limited to being made of resin, and may be made of, for example, metal.

[0035] The cover 14 has an outer shape of a substantially rectangular parallelepiped that is thin in the Z direction. In detail, as shown in FIG. 5, the cover 14 is fixed to the cold plate 13 by a plurality of fixing members 141 (see FIG. 3) with the opening 134 closed. Each of the plurality of fixing members 141 is a screw. The recess 133 of the cold plate 13 and the cover 14 define a flow path 11 in the main body 1. Note that in FIG. 3, only one screw is given the reference number "141."

[0036] 5, the flow path 11 is specifically a space through which a coolant can flow. The coolant is, for example, a cooling liquid. Examples of the cooling liquid include an antifreeze liquid and pure water. A typical example of the antifreeze liquid is an ethylene glycol aqueous solution or a propylene glycol aqueous solution.

[0037] 1 and 2, the at least one protrusion 2 is two protrusions 2. The number of protrusions 2 may be other than two. A hole 22 (see FIG. 5) that reaches the flow path 11 extends from an end 21 of each protrusion 2. Each end 21 has a flat surface that extends in the second direction X and the third direction Y. Each hole 22 is, for example, circular in plan view from one side in the first direction Z1.

[0038] The joints 3 are provided corresponding to the protrusions 2. Therefore, in the embodiment, the number of joints 3 is two. In the embodiment, the joints 3 are pipe joints of the same specifications. However, this is not limited thereto, and the joints 3 may be pipe joints of different specifications.

[0039] As shown in FIG. 8, each joint 3 has, in addition to the flow passage 31 described above, a spigot 32, a body 33, and a spigot .

[0040] The spigot 32 is a tubular portion that is inserted into the hole 22. The spigot 32 extends in the first direction Z while being inserted into the hole 22. The outer circumferential surface of the spigot 32 is generally cylindrical, and has an outer diameter smaller than the diameter of the hole 22 formed in the protrusion 2. The spigot 32 has three flanges 321, 322, 323 on its outer circumferential surface.

[0041] The flanges 321-323 protrude from the outer circumferential surface of the spigot 32 in a radial direction r1 of the spigot 32. The flanges 321-323 are thin plate-like in the first direction Z and expand in the circumferential direction θ1 of the spigot 32. Each of the flanges 321-323 is circular in a plan view from the first direction Z. Each of the flanges 321-323 has substantially the same dimension as the hole 22 in the radial direction r1.

[0042] Among the flanges 321 to 323, the flange 321 is located furthest on the other side Z2 in the first direction, and the flange 323 is located furthest on the one side Z1 in the first direction. The flange 322 is located between the flanges 321 and 323. The flange 322 is located at a distance in the first direction Z from both the flange 321 and the flange 323. An O-ring 324 is attached between the flanges 321 and 322, and an O-ring 325 is attached 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, when the spigot 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] With the spigot 32 inserted into the hole 22, the flow path 31 is connected to the flow path 11 so that the refrigerant can flow therethrough. When the spigot 32 is inserted into the hole 22, the end face of the flange 323 on one side in the first direction Z1 becomes approximately flush with the end face of the protruding portion 2 on one side in the first direction Z1 (i.e., the end 21). In the embodiment, the term "flush" means that multiple surfaces are approximately parallel to each other without any steps.

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

[0045] The spigot 34 is connected to a tip end 332 of the main body 33 at a base end 341 of the spigot 34. The tip end 332 is an end of the main body 33 opposite to the base end 331.

[0046] Spigot 34 protrudes straight from tip 332 of main body 33. Spigot 34 is tubular. A refrigerant piping (not shown) is attached to spigot 34. A protrusion 342 is formed on the outer circumferential surface of spigot 34 to prevent the refrigerant piping from coming loose.

[0047] Flow path 31 extends from end 327 of spigot 32 on the other side of the first direction Z2 through spigot 32, body 33 and spigot to tip 343 of spigot .

[0048] In the embodiment, the main body 33 and the spigot 34 extend in a direction different from the spigot 32. However, this is not limited thereto, and the main body 33 and the spigot 34 may extend in the same direction as the spigot 32 (i.e., the first direction Z).

[0049] 1 and 2, the regulating members 4 are provided corresponding to the protruding portions 2. Therefore, in the embodiment, the number of the regulating members 4 is two. In the embodiment, the regulating members 4 have the same shape. However, this is not limited thereto, and the regulating members 4 may have different shapes.

[0050] The restricting member 4 is in the form of a thin plate in the first direction Z while being fixed to the end portion 21 (see FIG. 4). In detail, the dimension of the restricting member 4 in the first direction Z is equal to or smaller than the distance in the first direction Z between the flange 323 and the main body 33.

[0051] 9, the restricting member 4 has a U-shaped cutout 42 in addition to the above-mentioned second portion 41. In detail, the cutout 42 has an arc portion 421 and two straight portions 422 in a plan view from the first direction Z. The arc portion 421 has an arc shape with a central angle of 180° and a diameter substantially the same as that of the spigot 32. The two straight portions 422 extend from both ends of the arc portion 421. The two straight portions 422 are approximately parallel to each other.

[0052] With the joint 3 inserted through the hole 22, the notch 42 of the restricting member 4 is inserted between the flange 323 (see FIG. 8) and the end 21, and the main body 33 (see FIG. 8). As a result, the outer circumferential surface of the end 326 (see FIG. 8) is surrounded by the arc portion 421 and the two straight portions 422. The restricting member 4 is fastened to the end 21 of the protruding portion 2 by two screws 414 (see FIG. 10). This prevents the joint 3 from moving in the first direction Z. In detail, the joint 3 can rotate in the circumferential direction θ1 (see FIG. 8) while suppressing the movement of the joint 3 in the first direction Z. This makes it possible to adjust the direction of the tip of the spigot 34. As a result, it becomes easier to route the tube (not shown) connected to the spigot 34 of the joint 3.

[0053] In the embodiment, there are two second parts 41. Each second part 41 is located on both sides of the notch 42. Here, the two second parts 41 are located on opposite sides of the spigot 32 of the joint 3 (see also FIG. 10). Also, a distance D01 (see FIG. 10) between one protruding end of the second part 41 and the other protruding end of the second part 41 is larger than a diameter φ01 (see FIG. 10) of the hole 52 formed in the substrate 5. Therefore, even if the substrate 5 moves, at least one of the second parts 41 faces the substrate 5. Therefore, the substrate 5 is unlikely to come off the protruding portion 2.

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

[0055] Each substrate 5 has a first portion 51 around the corresponding protrusion 2 (see FIG. 6). In each first portion 51, a pair of electrodes 61 is formed by, for example, printing. Each electrode 61 is generally annular. In each first portion 51, one electrode 61 is positioned along the outer circumferential surface of the protruding portion 2, and the other electrode 61 is positioned outside the one electrode 61 at a distance from the one electrode 61. That is, the pair of two electrodes 61 are electrically insulated. Furthermore, the pair of two electrodes 61 are formed only around the protruding portion 2. This allows the substrate 5 to be 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 two pairs of electrodes 61 on each substrate 5.

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

[0058] Similarly, on the other substrate 5, in addition to two pairs of electrodes 61, a connector 71 electrically connected to the electrodes 61 is mounted. Also, on the other substrate 5, wiring 73 for electrically connecting the electrodes 61 and the connector 71 is formed.

[0059] Moreover, the connectors 71 are electrically connected to each other by wiring 74 .

[0060] 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 a connector 71 mounted on the same substrate 5.

[0061] If the cooling device 100 does not include the leak sensor 6, the controller 7 and the like may be subjected to a waterproofing treatment using a mold or the like. This prevents the controller 7 and the like from breaking down.

[0062] As shown in FIG. 5 and FIG. 8, the refrigerant flows into the flow passage 31 from the tip 343 of one of the two joints 3 (see arrow A11 in FIG. 5), flows through the flow passage 31, and flows out from one end 327 of the joint 3 (see arrow A12). Then, the refrigerant flows in the second direction X1 and the second direction X2 along the fin 135 in the flow passage 11 (see arrows A13 and A14 in FIG. 5), and flows from the end 327 of the other joint 3 into the flow passage 31 of the other joint 3 (see arrow A15). Then, the refrigerant flows through the flow passage 31 of the other joint 3, and flows out from the other end 327 of the joint 3 (see arrow A16). During the process in which the refrigerant flows through the flow passage 11, heat exchange occurs between the refrigerant and the heat source 200. As a result, the heat source 200 is cooled.

[0063] According to this embodiment, it is possible to provide a cooling device 100 that can easily detect leakage from the joint 3. In detail, in the cooling device 100, for example, the refrigerant may leak from the gap between the hole 22 of the protruding portion 2 and the flange 323 of the joint 3. The leaked refrigerant may flow between the two electrodes 61 formed on each substrate 5 along the end portion 21 and the outer peripheral surface of the protruding portion 2. The controller 7 measures the electric resistance value between the two electrodes 61 formed on each substrate 5. When the refrigerant flows between the two electrodes 61 and the electric resistance value becomes equal to or less than a reference value, the controller 7 detects leakage. It is also possible that the refrigerant leaks from other places than the gap between the hole 22 and the flange 323 and reaches between the two electrodes 61. Therefore, the leak sensor 6 can detect leakage not only from the gap between the hole 22 and the flange 323 but also from other parts. Furthermore, by appropriately changing the area that the electrodes 61 occupy on the substrate 5 and / or the shape of the electrodes 61, it becomes possible to appropriately adjust the size of the area in which the leak sensor 6 detects liquid leakage.

[0064] Furthermore, if the second portion 41 is not present, the refrigerant leaking from the gap between the protrusion 2 and the joint 3 may infiltrate into the gap between the substrate 5 and the protrusion 2 along the outer peripheral surface of the protrusion 2. As a result, the detection of the liquid leakage in the controller 7 may be delayed. On the other hand, as shown in FIG. 10, if the second portion 41 is present, the refrigerant is likely to accumulate at the corner C01 between the protrusion 2 and the second portion 41 due to surface tension. In other words, the refrigerant is unlikely to infiltrate into the gap between the substrate 5 and the protrusion 2. Therefore, the refrigerant is likely to flow toward between the two pairs of electrodes 61. This improves the accuracy of detecting the liquid leakage in the controller 7. Furthermore, even if a small amount of refrigerant leaks from the gap, the controller 7 can detect the liquid leakage through the leak sensor 6.

[0065] [Variations] Fig. 11 is a perspective view showing a cooling device 300 according to a modified example of the embodiment. As shown in Fig. 11, the cooling device 300 differs from the cooling device 100 shown in Fig. 1 in that it includes one substrate 9 instead of the multiple substrates 5. The substrate 9 is disposed on one surface 12, and has multiple holes 91 through which the multiple protrusions 2 penetrate. Since only one substrate 9 is required, the assembly work of the cooling device 300 is simplified.

[0066] The substrate 9 further differs from the substrate 5 in that the substrate 9 has first portions 51 around each hole 91 and extends over substantially the entire area (i.e., a relatively wide area) of the one surface 12. Since the substrate 9 extends over a wide area, the electrodes 61 of the leak sensor 6 can also be formed over a wide area on the substrate 9. This further improves the accuracy of the controller 9 in detecting liquid leakage.

[0067] In addition, the drawings are mainly schematic illustrations of each component to facilitate understanding of the present disclosure, and the thickness, length, number, spacing, etc. of each illustrated component may differ from the actual ones due to the convenience of creating the drawings. In addition, the configurations of each component shown in the above embodiment are merely examples and are not particularly limited, and it goes without saying that various modifications are possible within a range that does not substantially deviate from the effects of the present disclosure.

[0068] In the embodiment and the modified example, the mounting surface of the board 5, 9 for the controller 7 is located on the other side Z2 in the first direction from the end 21. However, without being limited thereto, the mounting surface of the board 5, 9 for the controller 7 may be located on one side Z1 in the first direction from the end 21. In this case, however, the second portion 41 needs to protrude from the restricting member 4 in the first direction Z and bend in the second direction X or the third direction Y.

[0069] In the embodiment and modified examples, the controller 9 can also transmit, that is, notify, the result of detection of liquid leakage to an external device of the cooling device 100 by wired communication or wireless communication.

[0070] The present technology can also adopt the following configuration.

[0071] (1) a main body capable of being in thermal contact with a heat source and having a flow path for a coolant; a protrusion protruding from one surface of the body in a predetermined direction and having a hole extending from an end portion on the one side in the predetermined direction to the flow path; a fitting having a flow path that is inserted into the hole and connects to the flow path of the main body; A restricting member fixed to the end portion and restricting movement of the joint; A substrate disposed on the one surface; a leak sensor mounted on the substrate capable of detecting liquid leakage; Equipped with the substrate has a first portion disposed on the one surface and positioned around the protrusion; The regulating member has a second portion protruding from the end of the protruding portion in a direction intersecting the predetermined direction and on one side of the first portion in the predetermined direction.

[0072] (2) The cooling device according to (1), wherein the end portion is located on one side of the substrate in the predetermined direction.

[0073] (3) The cooling device according to (1) or (2), wherein the substrate has a hole through which the protrusion passes.

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

[0075] (5) A cooling device according to any one of (1) to (4), wherein the regulating member has a plurality of the second portions.

[0076] (6) a main body capable of being in thermal contact with a heat source and having a flow path through which a coolant flows; a plurality of protrusions protruding in a predetermined direction from one surface of the body and having holes extending from ends on the one side in the predetermined direction to the flow path; A plurality of fittings are inserted into the plurality of holes and have a plurality of flow paths connected to the flow paths of the main body; A plurality of restricting members fixed to the end portions and restricting movement of the joints; A plurality of substrates arranged on the one surface; a leak sensor mounted on each of the plurality of substrates and capable of detecting liquid leakage; Each of the plurality of substrates has a first portion on the one surface and around the protrusion, A cooling device, wherein each of the plurality of regulating members has a second portion protruding from the end of the plurality of protrusions on one side of the predetermined direction relative to the first portion, in a cross direction intersecting the predetermined direction.

[0077] (7) The cooling device according to (6), further comprising a controller mounted on one of the plurality of substrates for controlling the leak sensor.

[0078] (8) The cooling device according to (6) or (7), wherein an electrode of the leak sensor is formed on one of the substrates.

[0079] (9) The electrode is formed on the one surface of one of the plurality of substrates and around the protrusion, The cooling device according to any one of (6) to (8), wherein the controller is located on the one surface of one of the plurality of substrates and away from the electrode.

[0080] (10) A body capable of being in thermal contact with a heat source and having a flow path through which a coolant flows; a plurality of protrusions protruding in a predetermined direction from one surface of the body and having holes extending from ends on the one side in the predetermined direction to the flow path; A plurality of fittings are inserted into the plurality of holes and have a plurality of flow paths connected to the flow paths of the main body; A plurality of restricting members fixed to the end portions and restricting movement of the joints; a substrate disposed on the one surface and having a plurality of holes through which the plurality of protrusions pass; a leak sensor mounted on the substrate and capable of detecting a liquid leak; Each of the plurality of substrates has a first portion on the one surface and around the protrusion, A cooling device, wherein each of the plurality of regulating members has a second portion protruding from the end of the plurality of protrusions on one side of the predetermined direction relative to the first portion, in a cross direction intersecting the predetermined direction. [Industrial Applicability]

[0081] The present disclosure is applicable to, for example, a cooling device that cools a server. [Explanation of symbols]

[0082] 100: Cooling device 1: Main unit 11: Flow path 12: One side 2:Protrusion 21: End 22: Hole 3: Joint 31: Flow path 4: Regulating member 41:Second part 42: Notch 5: Substrate 51:First part 52: Hole 6: Leak sensor 61: Electrode 7: Controller 200: Heat source 300: Cooling device 9:Substrate 91: Hole

Claims

1. a main body capable of being in thermal contact with a heat source and having a coolant flow path; a protrusion protruding from one surface of the body in a predetermined direction and having a hole extending from an end portion on the one side in the predetermined direction to the flow path; a fitting having a flow path that is inserted into the hole and connects to the flow path of the main body; A restricting member fixed to the end portion and restricting movement of the joint; A substrate disposed on the one surface; a leak sensor mounted on the substrate capable of detecting liquid leakage; Equipped with the substrate has a first portion disposed on the one surface and positioned around the protrusion; The regulating member has a second portion protruding from the end of the protruding portion in a direction intersecting the predetermined direction and on one side of the first portion in the predetermined direction.

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

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

4. The cooling device according to claim 1 or 2, wherein the first portion and the second portion face each other in the predetermined direction.

5. The cooling device according to claim 1 , wherein the restricting member has a plurality of the second portions.

6. A body capable of being in thermal contact with a heat source and having a flow path through which a coolant flows; a plurality of protrusions protruding in a predetermined direction from one surface of the body and having holes extending from ends on the one side in the predetermined direction to the flow path; A plurality of fittings are inserted into the plurality of holes and have a plurality of flow paths connected to the flow paths of the main body; A plurality of restricting members fixed to the end portions and restricting movement of the joints; A plurality of substrates arranged on the one surface; a leak sensor mounted on each of the plurality of substrates and capable of detecting a liquid leak; Each of the plurality of substrates has a first portion on the one surface and around the protrusion, A cooling device, wherein each of the plurality of regulating members has a second portion protruding from the end of the plurality of protrusions on one side of the predetermined direction relative to the first portion, in a cross direction intersecting the predetermined direction.

7. The cooling device according to claim 6 , further comprising a controller mounted on one of the plurality of substrates for controlling the leak sensor.

8. The cooling device according to claim 7 , wherein an electrode of the leak sensor is formed on one of the plurality of substrates.

9. the electrode is formed on the one surface of one of the plurality of substrates and around the protrusion; The cooling apparatus of claim 8 , wherein the controller is located on the one surface of one of the plurality of substrates and away from the electrode.

10. A body capable of being in thermal contact with a heat source and having a flow path through which a coolant flows; a plurality of protrusions protruding in a predetermined direction from one surface of the body and having holes extending from ends on the one side in the predetermined direction to the flow path; A plurality of fittings are inserted into the plurality of holes and have a plurality of flow paths connected to the flow paths of the main body; A plurality of restricting members fixed to the end portions and restricting movement of the joints; a substrate disposed on the one surface and having a plurality of holes through which the plurality of protrusions pass; a leak sensor mounted on the substrate and capable of detecting a liquid leak; Each of the plurality of substrates has a first portion on the one surface and around the protrusion, A cooling device, wherein each of the plurality of regulating members has a second portion protruding from the end of the plurality of protrusions on one side of the predetermined direction relative to the first portion, in a cross direction intersecting the predetermined direction.

Images