Temperature regulating unit

Abstract

A temperature adjustment unit (10) of the present application is formed with flow paths (50) of a fluid between a plurality of rod-like members (30) formed of a porous metal that are spaced apart and extend parallel to each other, in which the fluid flows in a direction orthogonal to the extending direction of the rod-like members (30), i.e., a flow direction, and the flow paths (50) are meandering along the flow direction.

Description

Technical Field

[0001] This invention relates to a temperature control unit. Background Technology

[0002] Traditionally, temperature control units have been used in electrical equipment, electronic equipment, and semiconductor equipment to protect circuits that are susceptible to heat. More specifically, since the amount of electricity used by electrical equipment increases, the amount of heat generated also increases. Therefore, temperature control units are used to cool the generated heat and regulate the internal temperature of the electrical equipment.

[0003] As such a temperature regulating unit, a device disclosed in, for example, Japanese Patent Document 1 is known. The temperature regulating unit disclosed in Japanese Patent Publication No. 2019-9433, etc., has a metal fiber sheet made of metal fibers and a cooling mechanism for cooling the metal fiber sheet, which has excellent cooling effect, is easy to miniaturize and thin, and can perform localized cooling of the interior of electrical equipment, etc. Summary of the Invention

[0004] Although the temperature control unit disclosed in Japanese Patent Application Publication No. 2019-9433 is easy to miniaturize and thin, its heat exchange capacity is sometimes insufficient when cooling semiconductor components that require higher heat exchange capacity due to the small heat exchange area used to transfer heat to the fluid flowing in the flow path.

[0005] The present invention was made in view of the above-mentioned problems, and its purpose is to provide a temperature regulation unit with excellent heat exchange capacity.

[0006] The temperature regulating unit of the present invention is characterized in that a fluid flow path is formed between a plurality of rod-shaped members made of porous metal that extend parallel to each other at intervals, wherein the fluid flows in a direction orthogonal to the extension direction of the rod-shaped members, and the flow path meanders along the flow direction.

[0007] The temperature regulating unit according to the present invention provides a temperature regulating unit with excellent heat exchange capability. Attached Figure Description

[0008] Figure 1 This is a perspective view showing an example of the structure of a temperature regulating unit according to an embodiment of the present invention.

[0009] Figure 2 yes Figure 1 The temperature control unit shown is a cross-sectional view taken from direction AA.

[0010] Figure 3 yes Figure 2 The temperature control unit shown is viewed from BB, i.e. Figure 1The temperature control unit shown is a cross-sectional view taken from the CC direction.

[0011] Figure 4 yes Figure 2 The temperature control unit shown is viewed from the DD direction, i.e. Figure 3 The temperature control unit shown has its EE direction of view and Figure 1 The temperature control unit shown is a cross-sectional view from the FF direction.

[0012] Figure 5 It shows the composition Figure 1 A three-dimensional view of the structure of the first metal fiber structure of the temperature regulation unit shown.

[0013] Figure 6 It shows the composition Figure 1 A three-dimensional view of the structure of the second metal fiber structure of the temperature regulation unit shown.

[0014] Figure 7 It shows the composition Figure 1 A perspective view of the plate-shaped outer component of the temperature control unit shown.

[0015] Figure 8 This is a perspective view showing the structure of the first metal fiber structure constituting the temperature regulation unit of the modified example.

[0016] Figure 9 This is a perspective view showing the structure of the second metal fiber structure constituting the temperature regulation unit of the modified example.

[0017] Figure 10 (a) to (e) are cross-sectional views of the rod-shaped component constituting the temperature regulating unit of various embodiments of the present invention.

[0018] Figure 11 This is a cross-sectional view showing the internal structure of a temperature control unit in another variation.

[0019] Figure 12 This is a cross-sectional view showing the internal structure of a temperature control unit in yet another variation.

[0020] Figure 13 This is a cross-sectional view showing the internal structure of a temperature control unit in yet another variation.

[0021] Figure 14 This is a cross-sectional view showing the internal structure of a temperature control unit in yet another variation.

[0022] Figure 15 It is shown in magnification Figure 14 A cross-sectional view of the range G in the internal structure of the temperature control unit shown.

[0023] Figure 16This is a top view of the evaluation device.

[0024] Figure 17 yes Figure 16 The front view of the evaluation device shown.

[0025] Figure 18 yes Figure 16 Left view of the evaluation device shown. Detailed Implementation

[0026] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Figures 1 to 7 This diagram illustrates the temperature control unit of this embodiment. The temperature control unit of this embodiment heats or dissipates heat from a fluid that serves as a heat transfer medium. Examples of fluids that serve as heat transfer media include water, air, antifreeze, organic solvents, and fluorinated solvents (e.g., Fluorinert, Freon).

[0027] Figures 1 to 4 This is a diagram showing the temperature control unit 10 of this embodiment. Specifically, Figure 1 This is a perspective view showing an example of the structure of the temperature control unit 10 of this embodiment. Figure 2 yes Figure 1 A cross-sectional view of the temperature control unit 10 shown from direction AA. Additionally, Figure 3 yes Figure 2 The temperature control unit 10 shown is viewed from the BB direction, i.e. Figure 1 The temperature control unit 10 shown is a cross-sectional view taken from the CC direction. Additionally, Figure 4 yes Figure 2 The temperature control unit 10 shown is viewed from the DD direction, i.e. Figure 3 The temperature control unit 10 shown has an EE view and Figure 1 A cross-sectional view of the temperature control unit 10 shown from the FF direction.

[0028] like Figures 1 to 4 As shown, the temperature control unit 10 includes a generally cuboid frame 20 with an inlet 20a and an outlet 20b, and a plurality of rod-shaped members 30 disposed inside the frame 20. Fluid flow paths 50 are formed in the gaps between the rod-shaped members 30. These flow paths 50 are the main flow paths for the fluid. Furthermore, in this embodiment, a plurality of flow paths 50 extending substantially parallel to each other are formed. Fluid enters the interior of the frame 20 from the inlet 20a and flows through each flow path 50 to… Figure 1 and Figure 2 The fluid flows to the right of the outlet 20b and exits to the outside of the frame 20. At this time, in each flow path 50, the fluid flows in a direction orthogonal to the extension direction of each rod-shaped component 30, i.e., the flow direction (specifically, Figure 1 and Figure 2 (The fluid flows to the right of the flow path 50). Furthermore, the flow direction of the fluid in each flow path 50 can be slightly inclined from a direction orthogonal to the extending direction of each rod-shaped member 30. Specifically, the angle between the flow direction of the fluid in each flow path 50 and the direction orthogonal to the extending direction of each rod-shaped member 30 can be within the range of -10° to 10°. Such a temperature regulating unit 10 will be described in detail below.

[0029] Figure 1 The temperature control unit 10 shown is constructed by alternating layers. Figure 5 The first metal fiber structure 40 shown and Figure 6 It is constructed by the second metal fiber structure 42 shown. Specifically, it is constructed by alternating layers. Figure 5 The first metal fiber structure 40 shown and Figure 6 The second metal fiber structure 42 shown forms a laminate of metal fiber structures, and two metal fiber structures are installed on both sides of the laminate. Figure 7 The outer plate-shaped component 44 is shown. The outer plate-shaped component 44 is made of a metal body 22. When using a liquid as the heat transfer medium, the outer plate-shaped component 44 can also be watertight except for the inlet and outlet surfaces of the heat transfer medium.

[0030] The first metal fiber structure 40 has a plurality of rod-shaped members 32 that extend parallel to each other at intervals and a pair of connecting members 24 connecting the rod-shaped members 32. For example... Figure 2 As shown, each rod-shaped member 32 has a curved surface. Furthermore, the cross-sectional shape of each rod-shaped member 32 is mountain-shaped. Specifically, the cross-sectional shape of each rod-shaped member 32 is a region surrounded by straight lines and convex curves (e.g., a portion of an arc). Additionally, a pair of connecting members 24 are installed at both ends of each rod-shaped member 32. Thus, the first metal fiber structure 40 becomes a so-called ladder shape.

[0031] The manufacturing method of the first metal fiber structure 40 will be described. First, multiple metal fibers are deformed by applying physical impact, and the deformed metal fibers are placed on a graphite plate. Specifically, first, a first mold with ladder-shaped through holes corresponding to a pair of connecting members 24 and each rod-shaped member 32 is placed on the graphite plate. Then, the deformed metal fibers are placed into the through holes of the first mold. Then, the multiple metal fibers placed into the through holes of the first mold are sintered, and pressure is applied after sintering. Then, when the first mold is removed from the graphite plate, the first metal fiber molded body 40 is formed on the graphite plate.

[0032] The second metal fiber structure 42 has a plurality of rod-shaped members 34 extending parallel to each other at intervals and a pair of connecting members 26 connecting each rod-shaped member 34. For example... Figure 2As shown, each rod-shaped member 34 has a curved surface. Furthermore, the cross-sectional shape of each rod-shaped member 34 is mountain-shaped. Specifically, the cross-sectional shape of each rod-shaped member 34 is a region surrounded by straight lines and convex curves (e.g., a portion of an arc). Additionally, a pair of connecting members 26 are installed at both ends of each rod-shaped member 34. Thus, the second metal fiber structure 42 becomes a so-called ladder shape.

[0033] The manufacturing method of the second metal fiber structure 42 will be described. First, multiple metal fibers are deformed by applying physical impact, and the deformed multiple metal fibers are placed on a graphite plate. Specifically, first, a second mold with ladder-shaped through holes corresponding to a pair of connecting members 26 and each rod-shaped member 34 is placed on the graphite plate. Then, the deformed multiple metal fibers are placed into the through holes of the second mold. Then, the multiple metal fibers placed into the through holes of the second mold are sintered, and pressure is applied after sintering. Then, when the second mold is removed from the graphite plate, the second metal fiber molded body 42 is formed on the graphite plate.

[0034] In this embodiment, the frame 20 is constructed by combining a pair of connecting members 24 of the first metal fiber structure 40, a pair of connecting members 26 of the second metal fiber structure 42, and a pair of plate-shaped outer members 44. Furthermore, the plurality of rod-shaped members 30 disposed inside the frame 20 are composed of each rod-shaped member 32 of the first metal fiber structure 40 and each rod-shaped member 34 of the second metal fiber structure 42.

[0035] exist Figures 1 to 3 In the temperature regulating unit 10, the connecting parts 24 of the first metal fiber structure 40 and the connecting parts 26 of the second metal fiber structure 42 extend in the left-right direction. That is, in the temperature regulating unit 10, the extending direction of the connecting parts 24 of the first metal fiber structure 40 and the connecting parts 26 of the second metal fiber structure 42 is parallel to the flow direction of the fluid in each flow path 50. Furthermore, the flow direction of the fluid in each flow path 50 can also be slightly inclined from a direction orthogonal to the extending direction of the connecting parts 24 and 26. Specifically, the angle between the flow direction of the fluid in each flow path 50 and the extending direction of the connecting parts 24 and 26 is within the range of -10° to 10°.

[0036] As described above, the cross-sectional shape of each rod-shaped component 32 of the first metal fiber structure 40 and each rod-shaped component 34 of the second metal fiber structure 42 is mountain-shaped, that is, the region enclosed by a straight line and a convex curve. Therefore, the area near the apex of the convex curve of this cross-sectional shape becomes the tapering portion 32p, 34p. Moreover, as Figure 2 As shown, the tapered front portions 32p and 34p are configured on the front tapered front portions of both sides of each flow path 50.

[0037] Furthermore, the first metal fiber structure 40 and the second metal fiber structure 42 are alternately stacked with the tapered front ends 32p and 34p of the rod-shaped components 32 and 34 of adjacent metal fiber structures facing each other or toward opposite sides. Thus, as... Figure 2 As shown, each flow path 50 extends along the extension direction of each connecting component 24, 26, i.e., the flow direction. Figure 1 and Figure 2 (It meanders in the left and right directions)

[0038] In addition, such as Figure 2 As shown, adjacent rod-shaped components 32, 34 of the plurality of rod-shaped components 32, 34 dividing each flow path 50 are in contact with each other. That is, each rod-shaped component 32 of the first metal fiber structure 40 and each rod-shaped component 34 of the second metal fiber structure 42 adjacent to the first metal fiber structure 40 are in contact with each other. Thus, in Figure 2 Multiple flow paths 50 extending parallel to each other in the left-right direction are divided by rod-shaped components 32 and 34. Therefore, each flow path 50 is not connected to other flow paths 50. In this case, it is possible to prevent the fluid flowing in a certain flow path 50 from interfering with the fluid flowing in other flow paths 50 located next to that flow path 50, thus preventing significant turbulence in the flow.

[0039] Furthermore, the first metal fiber structure 40 and the second metal fiber structure 42 are each formed of metal fibers. Metal-coated fibers can also be used as such metal fibers. Additionally, the first metal fiber structure 40 and the second metal fiber structure 42 can also be formed into nonwoven fabrics, woven fabrics, and meshes using wet or dry manufacturing methods, and then processed into metal fiber structures. Preferably, the first metal fiber structure 40 and the second metal fiber structure 42 are metal fiber structures formed by bonding metal fibers after aggregation. Metal fiber bonding refers to the physical fixation of metal fibers to form a bonded portion. The first metal fiber structure 40 and the second metal fiber structure 42 can be formed by directly fixing metal fibers to each other at the bonded portion, or by indirectly fixing a portion of the metal fibers to each other using components other than the metal component.

[0040] The first metal fiber structure 40 and the second metal fiber structure 42 are formed of metal fibers, thus creating voids within them. This allows fluid flowing in each flow path 50 to pass through the first metal fiber structure 40 and the second metal fiber structure 42, particularly the interiors of the rod-shaped components 32 and 34. Furthermore, when the metal fibers in the first metal fiber structure 40 and the second metal fiber structure 42 are bonded together, voids are more easily formed between the metal fibers constituting the first metal fiber structure 40 and the second metal fiber structure 42. Such voids can also be formed, for example, by interlacing the metal fibers. Because the first metal fiber structure 40 and the second metal fiber structure 42 have such voids, fluid flowing in each flow path 50 is guided into the interiors of the first metal fiber structure 40 and the second metal fiber structure 42, particularly the rod-shaped components 32 and 34, thereby easily improving heat exchange with the fluid. Furthermore, it is preferable that the metal fibers of the first metal fiber structure 40 and the second metal fiber structure 42 are sintered at the bonding portion. By sintering the metal fibers, the thermal conductivity and homogeneity of the first metal fiber structure 40 and the second metal fiber structure 42 are easily stabilized.

[0041] Furthermore, the connecting parts 24 and 26 in the first metal fiber structure 40 and the second metal fiber structure 42 may also be made of metal bodies instead of metal fibers. In this case, since the plate-shaped outer parts 44 are also made of metal bodies 22, it is possible to prevent fluid from leaking out of the frame 20 from the flow path 50 to the outside at the outlet 20b.

[0042] Furthermore, as another example, each outer component 44 may not be made of metal body 22, but rather of metal fiber.

[0043] In addition, the first metal fiber structure 40 and the second metal fiber structure 42 can be joined by an adhesive, or they can be joined by welding or sintering.

[0044] Next, the operation of the temperature regulation unit 10 in this embodiment will be explained. For example... Figure 1 As indicated by the arrow, the fluid, which serves as the heat transfer medium, enters the interior of the frame 20 from the inlet 20a and flows through the flow paths 50 formed between the rod-shaped members 32 of the first metal fiber structure 40 and the rod-shaped members 34 of the second metal fiber structure 42, along the flow direction. Figure 1 and Figure 2The fluid flows to the right in the flow path 50. Since each flow path 50 meanders along the flow direction, the fluid also meanders within each flow path 50. In this case, the pressure loss of the fluid flowing in each flow path 50 appropriately increases, which prolongs the residence time of the fluid within each flow path 50, thus improving the heat transfer effect. Furthermore, since each rod-shaped component 32 of the first metal fiber structure 40 and each rod-shaped component 34 of the second metal fiber structure 42 are formed of metal fibers, the surface area of ​​these rod-shaped components 32, 34 increases, which improves the thermal conductivity based on the first metal fiber structure 40 and the second metal fiber structure 42. Additionally, when each rod-shaped component 32, 34 is composed of randomly arranged short metal fibers, turbulence is easily generated in the fluid flowing in each flow path 50. In this case, the pressure loss of the fluid flowing in each flow path 50 further increases, which further prolongs the residence time of the fluid within each flow path 50, thus further improving the heat transfer effect.

[0045] The temperature regulating unit 10 of this embodiment, which is constructed according to the above structure, has a plurality of rod-shaped members 32, 34 that extend parallel to each other at intervals and connecting members 24, 26 that connect each rod-shaped member 32, 34. It is constructed by stacking a plurality of metal porous structures (specifically, a first metal fiber structure 40 and a second metal fiber structure 42) formed of metal. Each rod-shaped member 32, 34 of each metal porous structure extends parallel to each other, and a fluid flow path 50 is formed in the gap between each rod-shaped member 32, 34.

[0046] In this case, since the fluid flows through the flow path 50, bypassing the rod-shaped components 32 and 34, the pressure loss of the fluid flowing in the flow path 50 is appropriately increased, which prolongs the residence time of the fluid in the flow path 50, thereby improving the heat transfer effect. Furthermore, when the first metal fiber structure 40 and the second metal fiber structure 42, which are porous metal structures, are formed of metal fibers, the surface area of ​​each rod-shaped component 32 and 34 becomes larger, which improves the thermal conductivity based on the first metal fiber structure 40 and the second metal fiber structure 42. Therefore, the heat exchange capacity of the temperature control unit 10 is excellent.

[0047] Furthermore, regarding the plurality of rod-shaped components 32 and 34 that extend parallel to each other at intervals, the extending direction of one rod-shaped component 32 or 34 may be slightly inclined relative to the extending directions of the other rod-shaped components 32 or 34. Specifically, regarding the plurality of rod-shaped components 32 and 34, it is permissible as long as the angle between the extending direction of one rod-shaped component 32 or 34 and the extending directions of the other rod-shaped components 32 or 34 is within the range of -10° to 10°.

[0048] Furthermore, the manufacturing method of the temperature regulating unit in this embodiment includes the following steps: a step of aggregating multiple metal fibers on a receiving portion (specifically, a graphite plate); a step of manufacturing multiple metal porous structures (specifically, a first metal fiber structure 40 and a second metal fiber structure 42) by sintering the multiple metal fibers aggregating on the receiving portion, wherein the metal porous structure has multiple rod-shaped members 32, 34 extending parallel to each other at intervals and connecting members 24, 26 connecting each rod-shaped member 32, 34; and a step of forming a fluid flow path 50 in the gaps between the rod-shaped members 32, 34 by stacking the multiple metal porous structures in such a way that each rod-shaped member 32, 34 of the metal porous structure extends parallel to each other. According to such a manufacturing method of the temperature regulating unit, the temperature regulating unit 10 with the above-described structure can be manufactured.

[0049] In addition, according to the temperature regulating unit 10 of this embodiment, a fluid flow path 50 is formed between a plurality of rod-shaped members 32, 34 of a porous metal structure that extend parallel to each other at intervals. In the flow path 50, the fluid flows in a direction orthogonal to the extension direction of the rod-shaped members 32, 34, i.e., the flow direction, and the flow path 50 meanders along the flow direction.

[0050] In this case, since the fluid meanders along the flow path 50, the pressure loss appropriately increases as the heat exchange area of ​​the fluid flowing in the flow path 50 increases, thereby prolonging the residence time of the fluid in the flow path 50 and improving the heat transfer effect. Furthermore, since each rod-shaped component 32, 34 is a porous metallic structure, the surface area of ​​each rod-shaped component 32, 34 increases, thereby improving the thermal conductivity based on each rod-shaped component 32, 34. Therefore, the temperature control unit 10 has excellent heat exchange capacity.

[0051] Furthermore, the temperature control unit of this embodiment is not limited to the above-described manner. Hereinafter, various other examples of the temperature control unit of this embodiment will be described.

[0052] The temperature control unit in a certain modified example uses alternating layers Figure 8 The first metal fiber structure 46 shown and Figure 9 It is constructed by the second metal fiber structure 48 shown. Specifically, it is constructed by alternating layers. Figure 8 The first metal fiber structure 46 shown and Figure 9 The second metal fiber structure 48 shown forms a laminate of metal fiber structures, and the laminate is installed on both sides of the laminate. Figure 7 The plate-shaped outer component 44 is shown.

[0053] The first metal fiber structure 46 has a plurality of rod-shaped components 32 that extend parallel to each other at intervals and a connecting component 24 connecting each rod-shaped component 32. Figure 8 The shape of the rod-shaped component 32 used in the first metal fiber structure 46 shown is similar to... Figure 5 The rod-shaped components 32 used in the illustrated metal fiber structure 40 are generally identical in shape. Additionally, a connecting component 24 is attached to one end of each rod-shaped component 32. Thus, the first metal fiber structure 40 becomes what is known as a comb shape.

[0054] The second metal fiber structure 48 has a plurality of rod-shaped components 34 that extend parallel to each other at intervals and a connecting component 24 connecting each rod-shaped component 34. Figure 9 The shape of the rod-shaped component 34 used in the second metal fiber structure 48 shown is similar to... Figure 6 The rod-shaped components 34 used in the illustrated metal fiber structure 42 are generally identical in shape. Additionally, a connecting component 26 is attached to one end of each rod-shaped component 34. Thus, the second metal fiber structure 48 becomes what is known as a comb shape.

[0055] In the modified temperature control unit, the frame is constructed by combining the connecting member 24 of the first metal fiber structure 46, the connecting member 26 of the second metal fiber structure 48, and the plate-shaped outer part 44. Specifically, the frame is arranged on both sides of the laminated body formed by alternating layers of the first metal fiber structure 46 and the second metal fiber structure 48. Figure 7 The plate-shaped outer component 44 shown is also attached to the other end of each rod-shaped component 32, 34 in the laminated body. Thus, a frame with an inlet and an outlet is formed.

[0056] In such a modified temperature control unit, the fluid also flows along each flow path 50 that extends parallel to the connecting part 24 of the first metal fiber structure 46 and the connecting part 26 of the second metal fiber structure 48.

[0057] As described above, the cross-sectional shape of each rod-shaped component 32 of the first metal fiber structure 46 and each rod-shaped component 34 of the second metal fiber structure 48 is mountain-shaped, that is, the region surrounded by a straight line and a convex curve. Therefore, the area near the apex of the convex curve of this cross-sectional shape becomes the front taper portion 32p, 34p. Moreover, the front taper portions 32p, 34p are arranged on both sides of each flow path 50.

[0058] Furthermore, the first metal fiber structure 46 and the second metal fiber structure 48 are alternately stacked with the tapered front ends 32p and 34p of the rod-shaped components 32 and 34 of adjacent metal fiber structures facing each other or toward opposite sides. As a result, each flow path 50 meanders along the extension direction of each connecting component 24 and 26, which is the direction of fluid flow.

[0059] Furthermore, adjacent rod-shaped components 32 and 34 on each side edge of each flow path 50 are in contact with each other. That is, each rod-shaped component 32 of the first metal fiber structure 46 is in contact with each rod-shaped component 34 of the second metal fiber structure 48 located next to the first metal fiber structure 46. Thus, the multiple flow paths 50 extending parallel to the flow direction are respectively divided by each rod-shaped component 32 and 34. Therefore, each of the multiple flow paths 50 is not connected to other flow paths 50.

[0060] Furthermore, the first metal fiber structure 46 and the second metal fiber structure 48 are each formed of metal fibers. The metal fibers constituting the first metal fiber structure 46 and the second metal fiber structure 48 are substantially the same metal fibers as those constituting the first metal fiber structure 40 and the second metal fiber structure 42 described above.

[0061] Thus, through alternating layers Figure 8 The first metal fiber structure 46 shown and Figure 9 The temperature control unit, constructed from the second metal fiber structure 48 shown, also includes... Figure 1 Similarly, in the temperature regulating unit 10 shown, the pressure loss of the fluid flowing in the flow path 50 is appropriately increased, which prolongs the residence time of the fluid in the flow path 50, thereby improving the heat transfer effect. Furthermore, each rod-shaped component 32, 34 is formed of metal fiber, thereby increasing the surface area of ​​each rod-shaped component 32, 34 and improving its thermal conductivity. Therefore, the temperature regulating unit 10 has excellent heat exchange capacity.

[0062] Furthermore, in another variation of the temperature control unit, various shapes can be used as the cross-sections of each rod-shaped component. Specifically, it is also possible to omit the use of... Figures 1 to 6 The rod-shaped components 32 and 34 shown are used... Figure 10 The rod-shaped components 32a, 34a, shown in (a) have a cross-sectional shape of quadrilateral (specifically a square or rectangle). Figure 10 (b) shows the trapezoidal cross-sectional shapes of the rod-shaped components 32b, 34b, Figure 10 The rod-shaped components 32c, 34c, shown in (c) have a triangular cross-sectional shape (specifically, an isosceles triangle). Figure 10The cross-sectional shape shown in (d) is mountain-shaped, that is, the rod-shaped components 32d, 34d in the region surrounded by straight lines and convex curves. Figure 10 The cross-sectional shape shown in (e) is any one of the rod-shaped components 32e and 34e, which are mountain-shaped (i.e., the region surrounded by straight lines and convex curves). Furthermore, Figure 10 The cross-sectional shapes of the rod-shaped components 32e and 34e shown in (e) are similar to... Figure 10 Compared to the cross-sectional shapes of the rod-shaped components 32d and 34d shown in (d), the curvature of the convex curve is smaller. Alternatively, components with a semi-circular cross-sectional shape can also be used as other types of rod-shaped components.

[0063] exist Figure 10 In the cross-sections of the various rod-shaped components shown, Figure 10 The rod-shaped components 32b, 34b, shown in (b) Figure 10 The rod-shaped components 32c, 34c shown in (c) Figure 10 The rod-shaped components 32d, 34d, shown in (d) Figure 10 The cross-sectional shapes of the rod-shaped components 32e and 34e shown in (e) each include a tapered front portion. In this case, compared with the use of Figure 10 Compared to the cases of the rod-shaped components 32a and 34a shown in (a), it is possible to suppress the situation where the fluid flows for too long in the temperature control unit, which would lead to a decrease in the fluid processing efficiency (flow rate).

[0064] In addition, Figure 10 In the cross-sections of the various rod-shaped components shown, Figure 10 The rod-shaped components 32d, 34d, and (d) shown in the diagram are as follows: Figure 10 The rod-shaped components 32e and 34e shown in (e) include curved surfaces. In this case, compared with the use of Figure 10 The rod-shaped components 32a, 34a, shown in (a) Figure 10 The rod-shaped components 32b, 34b or shown in (b) Figure 10 Compared to the cases of the rod-shaped components 32c and 34c shown in (c), it is possible to suppress the situation where the fluid flows for too long in the temperature control unit, which would lead to a decrease in the fluid processing efficiency (flow rate).

[0065] in addition, Figure 10 The cross-sectional shapes of the rod-shaped components 32e and 34e shown in (e) are similar to... Figure 10 Compared to the cross-sectional shapes of the rod-shaped components 32d and 34d shown in (d), the convex curve has a smaller curvature, but in this case, it can suppress the situation where the fluid flows for too long in the temperature control unit, which would lead to a decrease in the fluid processing efficiency (flow rate).

[0066] In addition, as another variation, the temperature control unit can also use Figure 11 The temperature control unit 110 shown Figure 12 The temperature control unit 210 shown Figure 13 The temperature control unit 310 shown or Figure 14 and Figure 15 The temperature control unit 410 shown.

[0067] Figure 11 The temperature control unit 110 shown includes a generally rectangular frame 120 with an inlet 120a and an outlet 120b, and a plurality of rod-shaped components 130 disposed inside the frame 120. A plurality of fluid flow paths 150 are formed in the gaps between the rod-shaped components 130. Fluid enters the interior of the frame 120 from the inlet 120a and flows through the flow paths 150 to… Figure 11 The flow is to the right of the container and flows out from outlet 120b to the outside of the frame 120.

[0068] The plurality of rod-shaped components 130 are composed of a plurality of rod-shaped components 132 of a first metal fiber structure (not shown) and a plurality of rod-shaped components 134 of a second metal fiber structure (not shown). The cross-sectional shape of each rod-shaped component 132, 134 is mountain-shaped, i.e., a region surrounded by straight lines and convex curves. Furthermore, the curvature of the convex curves in the cross-sectional shape of each rod-shaped component 132, 134 is greater than... Figures 1 to 6 The curvature of the convex curves of the cross-sectional shapes of each rod-shaped component 32, 34 shown. Furthermore, each rod-shaped component 132, 134 is arranged with the convex curves facing opposite directions. Additionally, the first metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 132. Additionally, the second metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 134.

[0069] Figure 11 The temperature control unit 110 shown is constructed by alternately stacking multiple such first and second metal fiber structures. At this time, the rod-shaped components 132 and 134 of each metal fiber structure extend parallel to each other, and fluid flow paths 150 are formed in the gaps between the rod-shaped components 132 and 134.

[0070] In other words, fluid flow paths 150 are formed between a plurality of rod-shaped components 130 that extend parallel to each other at intervals. In each flow path 150, the fluid flows in a direction orthogonal to the extension direction of the rod-shaped components 130, i.e., the flow direction, and each flow path 150 meanders along the flow direction.

[0071] In such a temperature regulation unit 110, it is also related to Figure 1Similarly, in the temperature regulating unit 10 shown, the pressure loss of the fluid flowing in the flow path 150 is moderately increased, which can prolong the residence time of the fluid in the flow path 150, thereby improving the heat transfer effect. In addition, each rod-shaped component 130 is formed of metal fiber, thereby increasing the surface area of ​​each rod-shaped component 130 and improving the thermal conductivity of each rod-shaped component 130. Therefore, the temperature regulating unit 110 has excellent heat exchange capacity.

[0072] Figure 12 The temperature control unit 210 shown includes a generally cuboid-shaped frame 220 with an inlet 220a and an outlet 220b, and a plurality of rod-shaped components 230 disposed inside the frame 220. A plurality of fluid flow paths 250 are formed in the gaps between the rod-shaped components 230. Fluid enters the interior of the frame 220 from the inlet 220a and flows through the flow paths 250 to… Figure 12 The flow is directed to the right and exits from outlet 220b to the outside of frame 220.

[0073] The plurality of rod-shaped components 230 are composed of a plurality of rod-shaped components 232 of a first metal fiber structure (not shown) and a plurality of rod-shaped components 234 of a second metal fiber structure (not shown). Each rod-shaped component 232, 234 has a trapezoidal cross-sectional shape. Furthermore, each rod-shaped component 232, 234 is arranged with its trapezoidal shape facing opposite directions. Additionally, the first metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 232. Additionally, the second metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 234.

[0074] Figure 12 The temperature control unit 210 shown is constructed by alternately stacking multiple such first and second metal fiber structures. At this time, the rod-shaped components 232 and 234 of each metal fiber structure extend parallel to each other, and fluid flow paths 250 are formed in the gaps between the rod-shaped components 232 and 234.

[0075] In other words, fluid flows through multiple parallel rod-shaped components 230 formed of metal fibers, which extend at intervals, and in each flow path 250, the fluid flows in a direction orthogonal to the extension direction of the rod-shaped components 230, i.e., the flow direction, and each flow path 250 meanders along the flow direction.

[0076] In such a temperature regulation unit 210, it is also related to Figure 1Similarly, in the temperature control unit 10 shown, the increased pressure loss of the fluid flowing in the flow path 250 extends the residence time of the fluid within the flow path 250, thus improving heat transfer efficiency. Furthermore, since each rod-shaped component 230 is formed of metal fiber, the increased surface area of ​​each rod-shaped component 230 enhances its thermal conductivity. Therefore, the temperature control unit 210 exhibits excellent heat exchange capability.

[0077] Figure 13 The temperature control unit 310 shown includes a generally rectangular frame 320 with an inlet 320a and an outlet 320b, and a plurality of rod-shaped members 330 disposed inside the frame 320. A plurality of fluid flow paths 350 are formed in the gaps between the rod-shaped members 330. Fluid enters the interior of the frame 320 from the inlet 320a and flows through the flow paths 350 to… Figure 13 The flow is directed to the right and exits from outlet 320b to the outside of frame 320.

[0078] The plurality of rod-shaped components 330 are composed of a plurality of rod-shaped components 332 of a first metal fiber structure (not shown) and a plurality of rod-shaped components 334 of a second metal fiber structure (not shown). Each rod-shaped component 332, 334 has a trapezoidal cross-sectional shape. Furthermore, each rod-shaped component 332, 334 is arranged with its trapezoidal shape facing opposite directions. Additionally, the first metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 332. Additionally, the second metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 334.

[0079] in addition, Figure 13 The rod-shaped components 332 and 334 shown are... Figure 12 Compared to the rod-shaped components 232 and 234 shown, the aspect ratio of the trapezoidal cross-section (specifically, the value obtained by dividing the height of the trapezoid by the length of the base) is larger, and the distance between the rod-shaped components 332 and 334 (i.e., the width of each flow path 350) is smaller than the distance between the rod-shaped components 232 and 234 (the width of each flow path 250). Therefore, the pressure loss in each flow path 350 becomes greater, and the residence time of the fluid within each flow path 350 becomes longer. Thus, compared to... Figure 12 Compared to the temperature control unit 210 shown, it can improve the heat transfer effect.

[0080] Figure 13 The temperature control unit 310 shown is constructed by alternately stacking multiple such first and second metal fiber structures. At this time, the rod-shaped components 332 and 334 of each metal fiber structure extend parallel to each other, and fluid flow paths 350 are formed in the gaps between the rod-shaped components 332 and 334.

[0081] In other words, fluid flow paths 350 are formed between multiple rod-shaped components 330 that extend parallel to each other at intervals. In each flow path 350, the fluid flows in a direction orthogonal to the extension direction of the rod-shaped components 330, i.e., the flow direction, and each flow path 350 meanders along the flow direction. Furthermore, in Figure 13 In the temperature regulating unit 310 shown, in each flow path 350, along the extension direction of the connecting member (i.e. Figure 13 When observed from the left-right direction, the rod-shaped components 332 and 334 partially overlap, and the flow path 350 becomes an imaginary straight line extending parallel to the connecting components (i.e., Figure 13 The imaginary straight line extending in the left and right direction must intersect with the rod-shaped components 332 and 334.

[0082] In such a temperature regulation unit 310, it is also related to Figure 1 Similarly, in the temperature regulating unit 10 shown, the pressure loss of the fluid flowing in the flow path 350 increases, which prolongs the residence time of the fluid in the flow path 350, thus improving the heat transfer effect. Furthermore, in each flow path 350, along the extending direction of the connecting member (i.e., Figure 13 When viewed from the left-right direction, the rod-shaped components 332 and 334 partially overlap, thus increasing the residence time of the fluid within the flow path 350 and further improving heat transfer efficiency. Furthermore, since each rod-shaped component 330 is formed of metal fiber, its surface area is increased, enhancing its thermal conductivity. Therefore, the temperature control unit 310 exhibits excellent heat exchange capability.

[0083] Figure 14 The temperature control unit 410 shown includes a generally cuboid frame 420 with an inlet 420a and an outlet 420b, and a plurality of rod-shaped components 430 disposed inside the frame 420. A plurality of fluid flow paths 450 are formed in the gaps between the rod-shaped components 430. Fluid enters the interior of the frame 420 from the inlet 420a and flows through the flow paths 450 to… Figure 14 The flow is directed to the right and exits from outlet 420b to the outside of frame 420.

[0084] The plurality of rod-shaped components 430 are composed of a plurality of rod-shaped components 432 of a first metal fiber structure (not shown) and a plurality of rod-shaped components 434 of a second metal fiber structure (not shown). The cross-sectional shape of each rod-shaped component 432, 434 forms a region surrounded by straight lines and convex curves. Furthermore, the curvature of the convex curve of the cross-sectional shape of each rod-shaped component 432, 434 is... Figures 1 to 6The convex curves of the cross-sectional shapes of the rod-shaped components 32 and 34 shown have approximately the same curvature. Furthermore, the rod-shaped components 432 and 434 are arranged with opposite orientations of their convex curves. Additionally, the first metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 432. Furthermore, the second metal fiber structure has connecting members (not shown) that connect the plurality of rod-shaped components 434.

[0085] Figure 14 The temperature control unit 410 shown is constructed by alternately stacking multiple such first and second metal fiber structures. At this time, the rod-shaped components 432 and 434 of each metal fiber structure extend parallel to each other, and fluid flow paths 450 are formed in the gaps between the rod-shaped components 432 and 434.

[0086] In addition, Figure 14 In the temperature control unit 410 shown, two adjacent rod-shaped components 432, 434 of the plurality of rod-shaped components 432, 434 that divide each flow path 450 are separated from each other. That is, two adjacent rod-shaped components 432, 434 do not contact each other in the flow direction of the fluid flowing in each flow path 450.

[0087] Figure 15 It is shown in magnification Figure 14 A cross-sectional view of the range G within the internal structure of the temperature regulation unit 410 shown. (See figure) Figure 15 As shown, in the direction orthogonal to the flow direction of each flow path 450, i.e., the width direction (i.e. Figure 15 The distance m between two adjacent rod-shaped components 432 and 434 in the vertical direction is greater than the distance m in the flow direction of each flow path 450 (i.e., in the vertical direction). Figure 15 The distance n between two adjacent rod-shaped components 432 and 434 in the left-right direction is large. In this case, even if two adjacent rod-shaped components 432 and 434 do not contact each other in the flow direction of the fluid flowing in each flow path 450, the distance n between the two adjacent rod-shaped components 432 and 434 will not increase. Therefore, it is possible to suppress the phenomenon that the fluid flowing in a certain flow path 450 interferes greatly with the fluid flowing in other flow paths 450 located next to that flow path 450, causing the flow to become significantly turbulent.

[0088] exist Figure 14 The temperature control unit 410 shown also has... Figure 1Similarly, in the temperature regulating unit 10 shown, the pressure loss of the fluid flowing in the flow path 450 is moderately increased, which can prolong the residence time of the fluid in the flow path 450, thereby improving the heat transfer effect. In addition, since each rod-shaped component 430 is formed of metal fiber, the surface area of ​​each rod-shaped component 430 is increased, which can improve the thermal conductivity of each rod-shaped component 430. Therefore, the temperature regulating unit 410 has excellent heat exchange capacity.

[0089] Furthermore, the aforementioned temperature regulating units are constructed by stacking multiple metal fiber structures formed of metal fibers. However, the temperature regulating unit of the present invention is not limited to this method. As the temperature regulating unit of the present invention, a temperature regulating unit constructed by stacking multiple metal porous structures formed of metal can also be used. In this case, as the metal porous structure, in addition to metal fiber structures formed of metal fibers, metal powder structures formed of metal powder, or metal mixtures formed of a mixture of metal fibers and metal powder, can also be used. Specifically, the metal powder structure is formed from metal powder using powder metallurgy methods such as powder pressing and sintering or metal powder injection molding. Furthermore, the metal mixture formed from a mixture of metal fibers and metal powder is a substance formed by mixing particulate metal into the aforementioned metal fiber structure.

[0090] Even under these conditions, because the porous metal structure is formed of porous metal, the surface area of ​​each rod-shaped component increases, which improves the thermal conductivity of the porous metal structure. Therefore, the temperature control unit has excellent heat exchange capabilities.

[0091] In this case, in the manufacturing method of the temperature control unit, multiple metal fibers, metal particles, or a mixture of metal fibers and metal particles are aggregated on a receiving portion. Then, by sintering the aggregated metal fibers, metal particles, or mixture on the receiving portion, multiple porous metal structures can be fabricated. Each porous metal structure has multiple rod-shaped members extending parallel to each other at intervals and connecting members that connect the rod-shaped members. Then, by stacking multiple porous metal structures with the rod-shaped members of each porous metal structure extending parallel to each other, fluid flow paths are formed in the gaps between the rod-shaped members.

[0092] Example

[0093] The present invention will now be described in more detail using examples and comparative examples.

[0094] <First Embodiment>

[0095] One kilogram of copper short fibers with an average fiber length of 0.114 mm and an average fiber diameter of 0.021 mm was fed into a shredder (Horai Co., Ltd.: Model BO-360) and processed through a 0.5 mm sieve. Next, the copper short fibers removed from the shredder were aggregated onto a high-purity alumina plate (Kyocera Corporation). More specifically, a mold with multiple through holes (5 mm long, 5 mm wide, and 500 μm high) was placed on the high-purity alumina plate, and copper short fibers were placed into the through holes of the mold. Thus, the copper short fibers aggregated on the high-purity alumina plate inside the through holes of the mold. Then, the high-purity alumina plate with the copper short fibers aggregated inside the through holes of the mold was placed in a vacuum sintering furnace (Chūgai Roasting Co., Ltd.), and sintered for 2 hours under nitrogen atmosphere at a pressure of 10 Torr and a sintering temperature of 1000°C. The sintered body is then removed from the mold, spacers are placed to achieve the desired thickness, and then it is pressed under a pressure of 100 kN. This produces a ladder-shaped metal fiber structure. The resulting metal fiber structure is then laminated to create... Figures 2 to 4 The temperature regulating unit is shown in the diagram. Furthermore, in the temperature regulating unit of the first embodiment, the cross-section of each rod-shaped component is semi-circular.

[0096] <Second Embodiment>

[0097] The metal fiber structure is manufactured in the same manner as in the first embodiment, and is formed by stacking the manufactured metal fiber structures. Figure 13 The temperature regulating unit is shown in the diagram. Furthermore, in the temperature regulating unit of the second embodiment, the cross-section of each rod-shaped component is semi-circular.

[0098] <Comparative Example 1>

[0099] Similar to the first embodiment, a metal fiber structure is manufactured, and the temperature regulating unit is formed by stacking the manufactured metal fiber structures. Here, in the temperature regulating unit of the first comparative example, the flow path formed between the rod-shaped components does not meander along the flow direction (i.e., the extension direction of the connecting components). More specifically, in the temperature regulating unit of the first modified example, the cross-section of each rod-shaped component is semi-circular, but when the metal fiber structures are stacked, the planar portions of the rod-shaped components of adjacent metal fiber structures contact each other. Therefore, in the overall temperature regulating unit, the cylindrical rod-shaped components are arranged at the intersections of the grid. In this case, the fluid flows linearly along the flow direction in the flow path.

[0100] <Comparative Example 2>

[0101] Similar to the first embodiment, a metal fiber structure is manufactured, and the temperature regulating unit is formed by stacking the manufactured metal fiber structures. Here, in the temperature regulating unit of the second comparative example, there are no rod-shaped components inside the frame; instead, the flow path is divided by plate-shaped partitions having planes extending along the flow direction (i.e., the extending direction of the connecting components). That is, in the flow path, the fluid flows linearly along the flow direction.

[0102] <Comparative Example 3>

[0103] The metal fiber structure was manufactured in the same manner as in the first embodiment, and the temperature regulating unit was formed by stacking the manufactured metal fiber structures. Here, the temperature regulating unit of the third comparative example does not have rod-shaped components inside the frame. That is, in the flow path, the fluid flows linearly along the flow direction.

[0104] <Evaluation>

[0105] Thermal conductivity was calculated for the temperature control units of the first and second embodiments and the temperature control units of the first and third comparative examples. The results are shown in Table 1 below.

[0106] [Table 1]

[0107]

[0108] In Table 1, thermal conductivity is used Figures 16 to 18 The evaluation device shown uses air as the fluid and performs measurements at a flow rate of 100 L / min and an input heat of 100 W.

[0109] Specifically, the temperature regulating units in the first and second embodiments and the temperature regulating units in the first and third comparative examples (in...) Figures 16 to 18 (Represented by reference numeral W in the accompanying drawings) A fluid inlet 500, a fluid outlet 502, and a heater 504 are provided. The heater 504 heats the fluid flowing in the temperature control unit. Fluid entering the interior of the temperature control unit from the fluid inlet 500 flows through the fluid passage 510 and exits to the outside of the temperature control unit from the fluid outlet 502. Furthermore, the temperatures of the fluid at the fluid inlet 500 and the fluid outlet 502 are measured and used as the inlet temperature and outlet temperature of the fluid, respectively. Additionally, as... Figure 16 As shown, eight thermometers 506 are installed on the surface of the temperature regulating unit near the heater 504, and the average surface temperature of the temperature regulating unit measured by these eight thermometers is set as Ts.

[0110] <Methods for determining thermal conductivity>

[0111] The input heat W from heater 504 to the fluid, the transfer area S (heat transfer area) of the fluid passage 510 adjacent to heater 504, the surface temperature Ts of the frame of the temperature regulating unit near heater 504, and the average temperature Tw of the fluid (the average of the inlet and outlet temperatures of the fluid) are measured. The thermal conductivity h is calculated by the formula: input heat W = thermal conductivity h × transfer area S × (surface temperature Ts - average fluid temperature Tw).

[0112] Compared to the temperature control units of the first and second embodiments, the temperature control units of the first and third comparative embodiments exhibit superior thermal conductivity. In the temperature control units of the first and third comparative embodiments, because the fluid flows linearly along the flow direction in the flow path, the heat exchange area for transferring heat to the fluid flowing in the flow path is smaller, resulting in a relatively low heat transfer rate. In contrast, the flow path of the temperature control units of the first and second embodiments meanders along the aforementioned flow direction, thus moderately increasing the pressure loss of the fluid flowing in the flow path and extending the residence time of the fluid in the flow path, thereby improving the heat transfer effect.

Claims

1. A temperature regulating unit, characterized in that, Fluid flow paths are formed between multiple rod-shaped components made of porous metal that are spaced apart and extend parallel to each other. In the flow path, the fluid flows in a direction orthogonal to the extension direction of the rod-shaped component, i.e., the flow direction. The flow path meanders along the flow direction. In the plurality of rod-shaped components that divide the flow path on each side edge, two adjacent rod-shaped components are in contact with each other.

2. The temperature regulating unit according to claim 1, characterized in that, The cross-sectional shape of each of the rod-shaped components includes a tapered front end portion, and each of the tapered front end portions is disposed on both sides of the flow path.

3. The temperature regulating unit according to claim 1, characterized in that, The cross-sectional shape of each of the rod-shaped components is trapezoidal, triangular, semi-circular, or mountain-shaped.

4. The temperature regulating unit according to claim 1, characterized in that, Each of the described rod-shaped components includes a curved surface.

5. The temperature regulating unit according to claim 1, characterized in that, When viewed along the flow direction within the flow path, the rod-shaped components partially overlap. The flow path is formed as an imaginary straight line extending parallel to the flow direction, which is bound to touch the rod-shaped component.

6. The temperature regulating unit according to any one of claims 1 to 5, characterized in that, Each of the rod-shaped components is formed from metal fibers, metal powder, or a mixture of metal fibers and metal powder.

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