Cooling device

Abstract

To provide a cooling device capable of suppressing the leakage of liquid from the outer periphery of the device.SOLUTION: The cooling device, which is in thermal contact with a first heat-generating component H1, has a cold plate 13 as a first component and a cover 14 as a second component. The first component forms a flow path 33 for the liquid. The second component is connected to the first component in a first direction one side Z1 in one direction, and forms flow paths 31 and 32. The first component has a storage unit 40. The storage unit 40 has a wall surface 41 that extends in one direction in the first direction and faces away from the edges 131a and 131b of the first component. At least a portion of the storage unit 40 is placed closer to the edge of the first component than the flow path.SELECTED DRAWING: Figure 2

Description

[Technical Field]

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

[0002] The cold plate of Patent Document 1 has a flow path block mounted on a base through which a liquid refrigerant flows, and is covered from above by a cover that is fixed to the base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-152500 Summary of the Invention [Problem to be solved by the invention]

[0004] In the cold plate of Patent Document 1, if the refrigerant leaks from the cover, the refrigerant is likely to flow to the outside of the base, and the refrigerant may leak outside the cold plate, affecting equipment placed around the cold plate.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and has an object to provide a cooling device that can prevent liquid from leaking to the outside from the outer peripheral edge of the device. [Means for solving the problem]

[0006] An exemplary cooling device of the present disclosure is in thermal contact with a first heat-generating component. The exemplary cooling device of the present disclosure includes a first component and a second component. The first component forms a flow path for a liquid. The second component is connected to one side of the first component in a first direction to form the flow path. The first component has a reservoir. The reservoir has a wall surface that faces away from the edge of the first component and extends to one side in the first direction. At least a portion of the reservoir is positioned closer to the edge of the first component than the flow path. [Effects of the Invention]

[0007] According to the exemplary embodiment of the present disclosure, leakage of liquid from the outer peripheral edge of the device to the outside can be suppressed. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a cooling device according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view of the cooling device taken along line II-II shown in FIG. [Figure 3] FIG. 3 is a diagram showing region III in FIG. [Figure 4] 4 is a diagram showing a part of the other side in the second direction of the cross section of the cooling device taken along line IV-IV shown in FIG. [Figure 5] FIG. 5 is a diagram showing a part of the other side in the second direction of the cold plate in the first modification of the cooling device of the first embodiment. [Figure 6] FIG. 6 is a diagram showing a part of the other side in the second direction of the cold plate in the cooling device according to the second modification of the first embodiment. [Figure 7] FIG. 7 is a diagram showing a part of the other side in the second direction of the cold plate in the cooling device of Modification 3 of the first embodiment. [Figure 8] FIG. 8 is a perspective view showing a cooling device according to the second embodiment. [Figure 9] FIG. 9 is a cross-sectional view of the cooling device taken along line IX-IX shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] [First embodiment] Hereinafter, exemplary embodiments of the present disclosure will be described with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated. In this specification, for ease of understanding, a first direction Z, a second direction X, and a third direction Y, which are perpendicular to each other, are appropriately described. Furthermore, one side of the first direction Z will be described as the first direction side Z1, and the other side of the first direction Z will be described as the first direction other side Z2. Furthermore, one side of the second direction X will be described as the second direction side X1, and the other side of the second direction X will be described as the second direction other side X2. Furthermore, one side of the third direction Y will be described as the third direction side Y1, and the other side of the third direction Y will be described as the third direction other side Y2. However, these definitions of directions are merely for convenience of description, and do not limit the orientation of the exemplary cooling device of the present disclosure during use, unless it is necessary to specifically define the horizontal and vertical directions. Furthermore, in this specification, "perpendicular directions" also includes directions that are approximately perpendicular.

[0010] A cooling device 100 according to a first exemplary embodiment will be described with reference to Figures 1 and 2. Figure 1 is a perspective view showing the cooling device 100 according to the first embodiment. Figure 2 is a cross-sectional view of the cooling device 100 taken along line II-II shown in Figure 1.

[0011] The cooling device 100 includes a cold plate 13, a cover 14, and one or more joints 3. The cold plate 13 is in thermal contact with a heat-generating component. The cooling device 100 cools a first heat-generating component H1 (FIG. 2) by passing a refrigerant through the interior of the cooling device 100 and performing heat exchange between the refrigerant and the first heat-generating component H1 via the cold plate 13. The first heat-generating component H1 is located on the other side Z2 of the cold plate 13 in the first direction and is in thermal contact with the surface of the cold plate 13 on the other side Z2 in the first direction. The cold plate 13 is made of a highly thermally conductive material. Examples of such materials include metals such as copper or aluminum. Alternatively, the cold plate 13 can be made of fine ceramics containing aluminum nitride or silicon carbide. The refrigerant is typically a liquid. For example, the surface of the cold plate 13 on the other side Z2 in the first direction and the first heat-generating component H1 are in contact with each other directly or via a member with high thermal conductivity such as heat grease or a thermally conductive sheet.

[0012] The cover 14 covers the cold plate 13. Specifically, the cover 14 is connected to the cold plate 13 on one side Z1 in the first direction and covers the surface of the cold plate 13 on one side Z1 in the first direction. A flow path 33 through which a refrigerant passes is formed between the cold plate 13 and the cover 14. The cover 14 is formed with a flow path 32 that connects to the one side Z1 in the first direction of the flow path 33 formed between the cold plate 13 and the cover 14. The flow path 32 is formed as a through hole that penetrates the cover 14 in the first direction Z. In the first embodiment, the cold plate 13 is an example of a first component. The cover 14 is an example of a second component.

[0013] The fitting 3 is detachable from the cover 14. Specifically, a portion of the fitting 3 is located inside the through hole of the cover 14. In the first embodiment, there are two fittings 3. The fittings 3 are pipe fittings of the same specifications. However, this is not limiting, and the number of fittings 3 may be one or three or more, and the fittings 3 may be pipe fittings of different specifications. The fitting 3 is an example of a piping member.

[0014] The fittings 3 are formed with a flow path 31 that connects to the flow path 32. Specifically, each fitting 3 has a spigot 312, a body 313, and a spigot 314. A portion of the spigot 312 is located inside the through-hole of the cover 14. The spigot 312 has a tubular shape. When located inside the through-hole of the cover 14, the spigot 312 extends in the first direction Z. The outer peripheral surface of the spigot 312 is generally cylindrical.

[0015] Main body 313 connects spigot 312 and spigot 314. Spigot 312 is provided at one end of main body 313. Spigot 314 is provided at the other end of main body 313 opposite to the end where spigot 312 is provided. An external component is connected to spigot 314. The external component is, for example, a pipe through which a refrigerant passes.

[0016] A flow path 31 is formed inside the main body 313. The flow path 31 extends from an end 312a of the spigot 312 on the other side Z2 in the first direction, through the spigot 312, the main body 313, and the spigot 314, and reaches the tip of the spigot 314. In other words, a portion of the flow path 31 is formed inside a portion of the flow path 32. In the first embodiment, the main body 313 and the spigot 314 extend in a direction different from that of the spigot 312. However, this is not a limitation, and the main body 313 and the spigot 314 may extend in the same direction (first direction Z) as the spigot 312.

[0017] The flow path 33 is formed by at least a surface of the cover 14 facing the other side Z2 in the first direction and a surface of the cold plate 13 facing the one side Z1 in the first direction. A fin portion 331 is provided in the flow path 33. The cold plate 13 has the fin portion 331. The fin portion 331 is provided on a surface of the cold plate 13 opposite to the surface that contacts the first heat-generating component H1. The fin portion 331 has a plurality of fins. The multiple fins protrude toward the one side Z1 in the first direction from the surface that is opposite to the surface that contacts the first heat-generating component H1 and extend along the third direction Y.

[0018] Next, the cold plate 13 and the cover 14 will be described with reference to Figures 1 to 3. Figure 3 is a diagram showing region III in Figure 2. Figure 3 representatively shows a part of the cold plate 13 on the other side X2 in the second direction.

[0019] As shown in FIGS. 1 to 3 , the cold plate 13 is a thin, plate-like member having a generally rectangular parallelepiped shape in the first direction Z. The cold plate 13 has a first edge 131a, a second edge 131b, a third edge 131c, and a fourth edge 131d, each of which represents an outer periphery when viewed from one side Z1 in the first direction. The first edge 131a is an edge on one side X1 in the second direction of the cold plate 13 and extends along the third direction Y. The second edge 131b is an edge on the other side X2 in the second direction of the cold plate 13 and extends along the third direction Y. The third edge 131c is an edge on one side Y1 in the third direction of the cold plate 13 and extends along the second direction X. The fourth edge 131d is an edge on the other side Y2 in the third direction of the cold plate 13 and extends along the second direction X.

[0020] In the first embodiment, the cold plate 13 has a storage section 40. The storage section 40 has a wall surface 41 facing the opposite side from the edge of the cold plate 13. Specifically, the cold plate 13 has a wall surface 41a facing the other side X2 in the second direction opposite the first edge 131a. The cold plate 13 has a wall surface 41b facing the one side X1 in the second direction opposite the second edge 131b. The cold plate 13 has a wall surface 41c (not shown) facing the other side Y2 in the third direction opposite the third edge 131c. The cold plate 13 has a wall surface 41d (not shown) facing the one side Y1 in the third direction opposite the fourth edge 131d.

[0021] Wall surface 41a, wall surface 41b, wall surface 41c, and wall surface 41d extend from connection surface S1 (FIG. 3) of cold plate 13 toward one side Z1 in the first direction. Connection surface S1 is a surface facing one side Z1 in the first direction and in contact with cover 14. Note that wall surface 41a, wall surface 41b, wall surface 41c, and wall surface 41d may be structured to extend toward one side Z1 in the first direction while inclining with respect to second direction X or third direction Y.

[0022] In the first embodiment, the wall surface 41 of the reservoir 40 is disposed closer to the edge of the cold plate 13 than the flow paths 32 and 33. As a result, even if the refrigerant passing through the flow paths 33 moves from the flow paths 33 to the edge of the cold plate 13 via the gap between the connection surface of the cold plate 13 and the cover 14, the refrigerant moving to the edge of the cold plate 13 is blocked by the wall surface 41. Therefore, it is possible to prevent the refrigerant from leaking to the outside from the outer peripheral edge of the cold plate 13 of the cooling device 100.

[0023] Specifically, wall surface 41a of reservoir 40 is disposed closer to first edge 131a than flow paths 32 and 33. In other words, wall surface 41a is disposed closer to one side X1 in the second direction than flow paths 32 and 33.

[0024] Wall surface 41b of reservoir 40 is disposed closer to second edge 131b than flow paths 32 and 33. In other words, wall surface 41b is located closer to the other side X2 in the second direction than flow paths 32 and 33.

[0025] The wall surface 41c of the storage portion 40 is disposed closer to the third edge 131c than the flow paths 32 and 33. In other words, the wall surface 41c is located closer to the one side Y1 in the third direction than the flow paths 32 and 33.

[0026] The wall surface 41d of the storage portion 40 is disposed closer to the fourth edge 131d than the flow paths 32 and 33. In other words, the wall surface 41d is located closer to the other side Y2 in the third direction than the flow paths 32 and 33.

[0027] Hereinafter, the first edge 131a side with respect to the wall surface 41a may be referred to as the outer side, and the flow paths 32 and 33 side with respect to the wall surface 41a may be referred to as the inner side. Similarly, the second edge 131b side with respect to the wall surface 41b may be referred to as the outer side, and the flow paths 32 and 33 side with respect to the wall surface 41b may be referred to as the inner side. The third edge 131c side with respect to the wall surface 41c may be referred to as the outer side, and the flow paths 32 and 33 side with respect to the wall surface 41c may be referred to as the inner side. The fourth edge 131d side with respect to the wall surface 41d may be referred to as the outer side, and the flow paths 32 and 33 side with respect to the wall surface 41d may be referred to as the inner side.

[0028] In the first embodiment, the cold plate 13 has a protruding portion 135 that protrudes in a direction intersecting with the first direction Z from the outer peripheral surface of the cover 14 along the second direction X and the third direction Y.

[0029] Typically, the cold plate 13 has a protruding portion 135 that protrudes toward the one side X1 in the second direction from a first edge 141a that defines the outer peripheral surface of the cover 14 on the one side X1 in the second direction, a protruding portion 135 that protrudes toward the other side X2 in the second direction from a second edge 141b that defines the outer peripheral surface of the cover 14 on the other side X2 in the second direction, a protruding portion 135 that protrudes toward the one side Y1 in the third direction from a third edge 141c that defines the outer peripheral surface of the cover 14 on the one side Y1 in the third direction, and a protruding portion 135 that protrudes toward the other side Y2 in the third direction from the second edge 141b that defines the outer peripheral surface of the cover 14 on the other side Y2 in the third direction. In other words, the protruding portion 135 is provided on the cold plate 13 so as to surround the entire periphery of the cover 14. Note that the protruding portion 135 may protrude in only one direction from a portion of the outer peripheral surface of the cover 14.

[0030] Of storage section 40, wall surface 41a, wall surface 41b, wall surface 41c, and wall surface 41d are provided on protruding section 135. Therefore, storage section 40 can be provided outside cover 14. As a result, the distance from the outer peripheral surface of cover 14 to wall surface 41 is increased, and the area of ​​the region enclosed by cover 14 and wall surface 41 increases, and the amount of refrigerant that can be held back by wall surface 41 can be increased.

[0031] 2 and 3, the wall surface 41 faces the outer peripheral surface of the cover 14. Specifically, the wall surface 41a faces the first edge 141a of the cover 14. The wall surface 41b faces the second edge 141b of the cover 14. The wall surface 41c faces the third edge 141c of the cover 14. The wall surface 41d faces the fourth edge 141d of the cover 14.

[0032] In this way, a storage portion 40 is formed between the wall surface 41 and the outer peripheral surface of the cover 14. Specifically, the storage portion 40 is formed by the wall surface 41a and the first edge 141a, the wall surface 41b and the second edge 141b, the wall surface 41c and the third edge 141c, the wall surface 41d and the fourth edge 141d, and the connection surface S1.

[0033] By forming the wall surface 41 on one side Z1 in the first direction relative to the connection surface S1, the thickness of the cold plate 13 along the first direction Z can be made thinner than when the storage section 40 is formed on the other side Z2 in the first direction relative to the connection surface S1 of the cold plate 13.

[0034] 2, the position of the end of the wall surface 41 on the one side Z1 in the first direction is located further in the first direction than the position of the end of the flow path 33 on the one side Z1 in the first direction. Therefore, a part of the wall surface 41 and a part of the cover 14 that is outside the wall surface 41 are located further in the first direction than a part of the flow path 32 on the one side Z1 in the first direction.

[0035] 1 to 3, wall surface 41 surrounds the entire periphery of cover 14. Therefore, since reservoir 40 is formed in cold plate 13 surrounding the entire periphery of cover 14, the refrigerant is less likely to leak out of cold plate 13 in either second direction X or third direction Y.

[0036] In the first embodiment, the cooling device 100 further includes a liquid leakage sensor 60 that detects a liquid such as a refrigerant. The liquid leakage sensor 60 is disposed in the storage portion 40. If the refrigerant passing through the flow path 33 leaks to the outside of the cover 14, the liquid leakage sensor 60 can detect the refrigerant in the storage portion 40. This makes it easier to detect a refrigerant leak before the storage portion 40 is filled with the refrigerant. The liquid leakage sensor 60 may be disposed on the wall surface 41 of the storage portion 40, on the outer peripheral surface of the cover 14, or on the connection surface S1 that connects the wall surface 41 and the outer peripheral surface of the cover 14. The liquid leakage sensor 60 is an example of a detection portion. The operating principle of the liquid leakage sensor 60 is not particularly limited.

[0037] 2, the protruding portion 135 is in thermal contact with a second heat-generating component H2, which is different from the first heat-generating component H1. For example, the surface of the protruding portion 135 on the other side Z2 in the first direction and the second heat-generating component H2 are in direct contact with each other, or via a highly thermally conductive member such as heat grease or a thermally conductive sheet. This enables heat exchange between the cooling device 100 and each of the multiple heat-generating components, making it possible to cool the multiple heat-generating components with a simple configuration.

[0038] For example, the overhang 135 and the cold plate 13 are a single member. In other words, the overhang 135 is formed as a part of the cold plate 13. Therefore, the thermal conductivity from the overhang 135 to the cold plate 13 is improved.

[0039] Next, the drainage channel 45 provided in the cooling device 100 of the first embodiment will be described with reference to Figures 1 and 4. Figure 4 is a diagram showing a part of the other side X2 in the second direction of the cross section of the cooling device 100 taken along line IV-IV shown in Figure 1. Note that the liquid leakage sensor 60 is omitted in Figure 4.

[0040] As shown in FIG. 4, the cold plate 13 further includes a drainage channel 45 connecting the wall surface 41b of the reservoir 40 and the second edge 131b of the cold plate 13. The provision of the drainage channel 45 allows the liquid to be guided from the reservoir 40 to a predetermined location and facilitates the discharge of the accumulated liquid. For example, the predetermined location is a location where electronic components, including heat-generating components, are not located and where the liquid is unlikely to affect surrounding equipment. Note that the drainage channel 45 does not necessarily have to be provided in the cooling device 100 of the first embodiment.

[0041] The drainage channel 45 is provided on the surface of the cold plate 13 facing the first direction side Z1, outside the wall surface 41b. Typically, the drainage channel 45 is a groove that is recessed from the surface of the cold plate 13 facing the first direction side Z1, which is located outside the wall surface 41b, toward the other first direction side Z2 and extends in a direction intersecting the first direction Z. In the cooling device 100, the drainage channel 45 extends along the second direction X. The length (depth) of the drainage channel 45 along the first direction Z is shorter than the length (height) of the wall surface 41b along the first direction Z. In other words, a step is formed between the bottom surface of the drainage channel 45 and the connection surface S1, which is the bottom of the storage section 40. In the first embodiment, the length (width) of the drainage channel 45 along the third direction Y is shorter than the length (width) of the wall surface 41b along the third direction Y, but the length (width) of the drainage channel 45 along the third direction Y is not particularly limited.

[0042] A liquid leakage sensor 60 may also be disposed in the drainage channel 45. In this case, when a certain amount of refrigerant accumulates in the storage section 40 and flows into the drainage channel 45, the liquid leakage sensor 60 detects a liquid leakage. Therefore, when a small amount of liquid leakage is acceptable, it is possible to prioritize continued operation of the device by delaying the detection of a liquid leakage.

[0043] For example, the drainage channel 45 is inclined toward the other side Z2 in the first direction toward the edge of the cold plate 13. Specifically, in the cold plate 13, the drainage channel 45 is inclined so as to be positioned closer to the other side Z2 in the first direction as it approaches the other side X2 in the second direction. This allows the refrigerant to easily move from the storage portion 40 toward the second edge 131b of the cold plate 13.

[0044] [Variation 1] Next, a first modification of the cooling device 100 of the first embodiment will be described with reference to Fig. 5. Fig. 5 is a diagram showing a part of the other side X2 in the second direction of the cold plate 13 in the first modification of the cooling device 100 of the first embodiment.

[0045] The first modification of the cooling device 100 of the first embodiment is the same as the cooling device 100 of the first embodiment except for the shape of the storage portion 40. Note that the liquid leakage sensor 60 is omitted in Fig. 4 .

[0046] The reservoir 40 of the first modification of the cooling device 100 is formed by a wall surface 41, an opposing surface 42 that faces the wall surface 41, and a bottom surface 43 that connects the wall surface 41 and the opposing surface 42.

[0047] Specifically, as shown in FIG. 5, the storage section 40 has a wall surface 41b, an opposing surface 42b, and a bottom surface 43b. The opposing surface 42b is located closer to the one side X1 in the second direction than the wall surface 41b and extends from the connection surface S1 to the other side Z2 in the first direction. An end of the opposing surface 42b on the other side Z2 in the first direction is connected to the bottom surface 43b. The bottom surface 43b extends in a direction intersecting the opposing surface 42b. The bottom surface 43b is a surface facing the one side Z1 in the first direction. The wall surface 41b extends from the bottom surface 43b to the other side Z2 in the first direction. In this way, the storage section 40 in the first variation of the cooling device 100 is formed by the wall surface 41b, the opposing surface 42b, and the bottom surface 43b, and is a recessed portion recessed from the connection surface S1 to the other side Z2 in the first direction. In the first modification of the cooling device 100, similar reservoirs 40 are provided on the other three sides of the cold plate 13 other than the other side X2 in the second direction.

[0048] Therefore, compared to when the wall surface is formed on one side Z1 in the first direction relative to the connection surface S1, it is possible to provide the storage portion 40 while reducing the thickness of the overhanging portion 135 in the first direction Z. Furthermore, by forming the storage portion 40 on the other side Z2 in the first direction relative to the connection surface S1, which is the boundary between the cold plate 13 and the cover 14, a step is formed between the connection surface S1 and the bottom surface 43, making it easier for the liquid to move from the connection surface S1 to the bottom surface 43, but making it difficult for the liquid to move from the bottom surface 43 to the connection surface S1. As a result, the liquid is more easily moved away from the connection surface S1, and liquid that leaks out of the cover 14 from between the cold plate 13 and the cover 14 is less likely to flow back toward the flow path 31.

[0049] The reservoir 40 in the first modification of the cooling device 100 of the first embodiment is provided in the protruding portion 135. In this case, the opposing surface 42b is provided so as not to create a step between it and the second edge 141b of the cover 14, for example.

[0050] [Variation 2] Next, a second modification of the cooling device 100 of the first embodiment will be described with reference to Fig. 6. Fig. 6 is a diagram showing a part of the other side X2 in the second direction of the cold plate 13 in the second modification of the cooling device 100 of the first embodiment. Note that the liquid leakage sensor 60 is omitted from Fig. 6.

[0051] The second modification of the cooling device 100 of the first embodiment is the same as the first modification of the cooling device 100 of the first embodiment, except that the arrangement of the storage section 40 is different.

[0052] As shown in FIG. 6 , the storage section 40 in the second modification of the cooling device 100 of the first embodiment is disposed inside the outer peripheral surface of the cover 14. Specifically, the wall surface 41b in the second modification of the cooling device 100 of the first embodiment is located on the one side X1 in the second direction relative to the second edge 141b of the cover 14. Therefore, the bottom surface 43b connected to the wall surface 41b and the opposing surface 42b opposing the wall surface 41b are also located on the one side X1 in the second direction relative to the second edge 141b of the cover 14. In other words, the storage section 40 in the second modification of the cooling device 100 of the first embodiment is covered on the one side Z1 in the first direction by the cover 14. In other words, the storage section 40 in the second modification of the cooling device 100 of the first embodiment is not provided on the protruding portion 135.

[0053] In addition to the first and second variations of the cooling device 100 of the first embodiment, the wall surface 41b and a portion of the bottom surface 43 may be disposed outside the outer peripheral surface of the cover 14, and the remaining portion of the bottom surface 43 and the opposing surface 42b may be disposed inside the outer peripheral surface of the cover 14. In this case, the cover 14 covers a portion of the one side Z1 in the first direction of the storage unit 40. In other words, a portion of the storage unit 40 in the second variation of the cooling device 100 of the first embodiment is provided on the protruding portion 135. By covering at least a portion of the storage unit 40 with the cover 14, even when the cooling device 100 moves due to, for example, vibration, the refrigerant is less likely to overflow from the storage unit 40, and leakage of the refrigerant outside the cooling device 100 can be suppressed.

[0054] [Variation 3] Next, a third modification of the cooling device 100 of the first embodiment will be described with reference to Fig. 7. Fig. 7 is a diagram showing a part of the other side X2 in the second direction of the cold plate 13 in the third modification of the cooling device 100 of the first embodiment. Note that the liquid leakage sensor 60 is omitted from Fig. 7.

[0055] The third modification of the cooling device 100 of the first embodiment is the same as the cooling device 100 of the first embodiment except that the shape of the outer peripheral surface of the cover 14 is different.

[0056] The outer peripheral surface of the cover 14 in the third modification of the cooling device 100 of the first embodiment is inclined toward the other side Z2 in the first direction toward the outside of the cover 14. Specifically, in the cover 14 in the third modification of the cooling device 100 of the first embodiment, the second edge 141b is inclined so as to be positioned closer to the other side Z2 in the first direction as it approaches the other side X2 in the second direction. This allows, for example, if refrigerant leaks from between the cover 14 and the joint 3 or if refrigerant or a liquid other than refrigerant adheres to the cover 14, the liquid can easily move along the second edge 141b to the cold plate 13. In this case, if the reservoir 40 is provided outside the second edge 141b, the refrigerant is stored in the reservoir 40 and is less likely to leak from the outer peripheral edge of the cold plate 13 to the outside. In the cover 14 in variant 3 of the cooling device 100 of the first embodiment, the first edge 141a, the third edge 141c and the fourth edge 141d other than the second edge 141b may each have the same shape as the second edge 141b or may have a different shape from the second edge 141b.

[0057] In the first embodiment, the cooling device 100 may be provided with a sealing member such as an O-ring. For example, the sealing member is provided between the flow passage 32 and the wall surface 41 in the second direction X or the third direction Y. Typically, the sealing member is disposed between the cold plate 13 and the cover 14 and attached to the cold plate 13 or the cover 14.

[0058] [Second embodiment] Next, a cooling device according to a second exemplary embodiment will be described. The second embodiment differs from the first embodiment in the relationship between the first component and the second component. Below, differences between the second embodiment and the first embodiment will be described, and explanations of the same aspects as the first embodiment will be omitted.

[0059] A cooling device 101 according to a second exemplary embodiment will be described with reference to Fig. 8. Fig. 8 is a perspective view showing the cooling device 101 according to the second embodiment. Fig. 9 is a cross-sectional view of the cooling device 101 taken along line IX-IX shown in Fig. 8.

[0060] The cooling device 101 according to the second embodiment is the same as the cooling device 100 according to the first embodiment, except that the cooling device 101 does not include the drainage channel 45. In the cooling device 101 according to the second embodiment, the cover 14 is an example of the first component, and the joint 3 is an example of the second component.

[0061] The joint 3 is connected to the cover 14 on the one side Z1 in the first direction, and covers at least a part of the surface of the cover 14 on the one side Z1 in the first direction.

[0062] The cover 14 has a storage section 50. The storage section 50 has a wall surface 51 facing the opposite side from the edge of the cover 14. Specifically, the cover 14 is provided with a wall surface 51a facing the other side X2 in the second direction opposite the first edge 141a. The cover 14 is provided with a wall surface 51b facing the one side X1 in the second direction opposite the second edge 141b. The cover 14 is provided with a wall surface 51c facing the other side Y2 in the third direction opposite the third edge 141c. The cover 14 is provided with a wall surface 51d facing the one side Y1 in the third direction opposite the fourth edge 141d.

[0063] The wall surface 51 of the storage section 50 is disposed closer to the edge of the cover 14 than the flow paths 31 and 32 .

[0064] The storage section 50 further has a bottom surface 53. The bottom surface 53 is connected to the other side Z2 in the first direction of each of the wall surfaces 51a, 51b, 51c, and 51d. The bottom surface 53 extends in a direction intersecting the wall surfaces 51a, 51b, 51c, and 51d. The bottom surface 53 is also a surface facing the one side Z1 in the first direction. In this way, the storage section 50 in the cooling device 101 is formed by the wall surface 51 and the bottom surface 53, and is a recessed portion recessed from the end face of the cover 14 on the one side Z1 in the first direction toward the other side Z2 in the first direction.

[0065] Wall surface 51a, wall surface 51b, wall surface 51c, and wall surface 51d each face the outer peripheral surface of spigot 312 or face the outer peripheral surface of the protrusion of cover 14 that protrudes from bottom surface 53 toward one side Z1 in the first direction.

[0066] In the second embodiment, the storage unit 50 may have the same configuration as the storage unit 40 in each of the first embodiment and the first to third modifications of the first embodiment. Also, the storage unit 50 of the second embodiment may be provided in the cover 14 of the cooling device 100 of the first embodiment.

[0067] The embodiments of the present disclosure have been described above with reference to the drawings. However, the present disclosure is not limited to the above embodiments and can be implemented in various forms without departing from the spirit and scope of the present disclosure. Furthermore, the components disclosed in the above embodiments can be modified as appropriate. For example, some of the components shown in one embodiment may be added to the components of another embodiment, or some of the components shown in one embodiment may be deleted from the embodiment.

[0068] Furthermore, the drawings mainly show each component in a schematic manner to facilitate understanding of the disclosure, and the thickness, length, number, spacing, etc. of each component shown in the drawings may differ from the actual ones due to the convenience of creating the drawings. Furthermore, 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 scope that does not substantially deviate from the effects of the present disclosure.

[0069] The present technology can be configured as follows. (1) A cooling device in thermal contact with a first heat-generating component, a first component that forms a flow path for the liquid; a second component connected to one side of the first component in a first direction and forming the flow path; and the first component has a storage portion having a wall surface facing away from the edge of the first component and extending to one side in the first direction; A cooling device, wherein at least a portion of the storage portion is disposed closer to an edge of the first component than the flow path. (2) The first component has a protruding portion that protrudes from an outer peripheral surface of the second component in a direction intersecting the first direction, The cooling device of (1), wherein at least a portion of the storage section is provided in the protruding section. (3) The cooling device according to (1) or (2), wherein the wall surface faces the outer peripheral surface of the second component. (4) A cooling device according to any one of (1) to (3), wherein the wall surface surrounds the entire periphery of the second component. (5) A cooling device according to any one of (1) to (4), wherein the first part has a drainage channel connecting the storage section and the edge of the first part. (6) The cooling device according to (5), wherein the drainage channel is inclined toward the other side in the first direction toward the edge of the first component. (7) Further comprising a detection unit for detecting a liquid, The cooling device according to any one of (1) to (6), wherein the detection unit is disposed in the storage unit. (8) The cooling device according to any one of (1) to (7), wherein the outer peripheral surface of the second component is inclined toward the other side in the first direction toward the edge of the second component. (9) A cooling device according to any one of (2) to (8), wherein the protruding portion is in thermal contact with the second heat-generating component. (10) A cooling device according to any one of (1) to (9), wherein the protrusion and the first component are a single member. (11) The first component has a cold plate in thermal contact with the first heat-generating component, the second component has a cover that covers one side of the cold plate in a first direction, The cooling device according to any one of (1) to (10), wherein the cold plate and the cover form the flow path. (12) The heating element further includes a cold plate in contact with the first heat generating component, the first component is connected to the cold plate on one side in the first direction and has a cover that covers the cold plate on one side in the first direction; the second component has a piping member connected to the cover, The cooling device according to any one of (1) to (7), wherein the cover and the piping member form the flow path. [Industrial Applicability]

[0070] The present disclosure is applicable to the field of cooling devices. [Explanation of symbols]

[0071] 3: Joint 13: Cold plate 14: Cover 31, 32, 33: Flow path 40, 50: Reservoir 41, 41a, 41b, 41c, 41d: Wall 45:Drainage channel 51, 51a, 51b, 51c, 51d: Wall 60: Leak sensor 100: Cooling device 131a: First Edge 131b: Second Edge 131c: Third Edge 131d: Fourth Edge 135: Overhang 141a: First Edge 141b: Second Edge 141c: Third Edge 141d: Fourth Edge H1: First heat generating component H2: Second heat generating component Z: 1st direction Z1: One side in the first direction Z2: 1st direction other side

Claims

1. a cooling device in thermal contact with the first heat-generating component, a first component forming a fluid flow path; a second component connected to one side of the first component in a first direction and forming the flow path; and the first component has a storage portion having a wall surface facing away from the edge of the first component and extending to one side in the first direction; A cooling device, wherein at least a portion of the storage portion is positioned closer to an edge of the first component than the flow path.

2. the first component has a protruding portion that protrudes from an outer peripheral surface of the second component in a direction intersecting the first direction, The cooling device according to claim 1 , wherein at least a portion of the reservoir is provided in the protruding portion.

3. The cooling device according to claim 2 , wherein the wall surface faces an outer peripheral surface of the second component.

4. The cooling device according to claim 2 , wherein the wall surface surrounds the entire periphery of the second component.

5. The cooling device according to claim 1 , wherein the first component has a drainage channel connecting the reservoir and an edge of the first component.

6. The cooling device according to claim 5 , wherein the drainage channel is inclined toward the other side in the first direction toward an edge side of the first component.

7. Further, the liquid detection unit includes a detection unit for detecting a liquid, The cooling device according to claim 1 , wherein the detection unit is disposed in the storage unit.

8. The cooling device according to claim 2 , wherein the outer peripheral surface of the second component is inclined toward the other side in the first direction toward an edge side of the second component.

9. The cooling device according to claim 2 , wherein the protruding portion is in thermal contact with a second heat-generating component.

10. The cooling device of claim 9 , wherein the protrusion and the first part are a single member.

11. the first component has a cold plate in thermal contact with the first heat-generating component; the second component has a cover that covers one side of the cold plate in a first direction; The cooling device of claim 1 , wherein the cold plate and the cover form the flow path.

12. a cold plate in contact with the first heat-generating component; the first component is connected to the cold plate on one side in the first direction and has a cover that covers the cold plate on one side in the first direction; the second component has a piping member connected to the cover, The cooling device according to claim 1 , wherein the cover and the piping member form the flow path.

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