Temperature control device

Abstract

To provide a temperature control device with excellent temperature control efficiency.SOLUTION: A temperature control device includes: a base member; a heat sink arranged on the base member; a straightening member arranged on the heat sink and containing resin; and a cover member arranged on the straightening member. The cover member has an inlet for introducing fluid into the interior of the temperature control device, and an outlet for discharging fluid from the interior of the temperature control device. The straightening member has a first flow path for guiding fluid introduced from the inlet to the heat sink, and a second flow path for guiding fluid discharged from the heat sink to the outlet.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] BACKGROUND ART Various means have been studied for cooling objects (heat generating bodies) that generate heat during operation, such as a central processing unit (CPU) mounted on a computer or a secondary battery mounted on an electric vehicle. For example, Patent Document 1 discloses a structure for cooling electronic components by introducing a liquid into an internal space in which an object (hereinafter also referred to as a heat sink) having multiple fins for dissipating heat generated by the electronic components is placed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-4667 Summary of the Invention [Problem to be solved by the invention]

[0004] The temperature control device of the type that introduces a liquid into an internal space equipped with a heat sink, as disclosed in Patent Document 1, leaves room for improvement in terms of temperature control efficiency. In view of the above circumstances, an object of one embodiment of the present disclosure is to provide a temperature control device that is excellent in temperature control efficiency. [Means for solving the problem]

[0005] The means for solving the above problems include the following embodiments. <1> A base member 1; a heat sink 2 disposed on the base member 1; a rectifying member (3) that is disposed on the heat sink (2) and contains a resin; a cover member (4) disposed on the flow rectifying member (3), The cover member 4 has an inlet 5 for introducing a fluid into the temperature control device and an outlet 6 for discharging the fluid from the temperature control device, The straightening member (3) has a first flow path (7) that guides the fluid introduced from the inlet (5) to the heat sink (2), and a second flow path (8) that guides the fluid discharged from the heat sink (2) to the outlet (6). <2> the first flow path 7 has a first opening 7a that communicates between a surface of the rectifying member 3 that faces the cover member 4 and a surface of the rectifying member 3 that faces the heat sink 2, The second flow path 8 has a second opening 8a that communicates between a surface of the rectifying member 3 that faces the cover member 4 and a surface that faces the heat sink 2. <1> The temperature control device according to claim 1. <3> The first flow path 7 has a plurality of first openings 7a. <2> The temperature control device according to claim 1. <4> The first flow path 8 has a plurality of second openings 8a. <2> or <3> The temperature control device according to claim 1. <5> The first opening 7a is provided in a portion of the heat sink 2 where the temperature change rate is greatest. <2> ~ <4> 10. The temperature control device according to claim 9, wherein: <6> a distance X1 from the portion of the heat sink 2 where the temperature change rate is greatest to the first opening 7a is shorter than a distance X2 from the portion of the heat sink 2 where the temperature change rate is greatest to the second opening 8a; <2> ~ <5> 10. The temperature control device according to claim 9, wherein: <7> A portion of the rectifying member 3 that comes into contact with the heat sink 2 contains an elastomer. <1> ~ <6> 10. The temperature control device according to claim 9, wherein: <8> Further provided is a frame 9 arranged on the side of the temperature control device. <1> ~ <7> 10. The temperature control device according to claim 9, wherein: <9> The frame 9 is joined to the base member 1 and the cover member 4, respectively. <8> The temperature control device according to claim 1. [Effects of the Invention]

[0006] According to the present invention, a temperature control device with excellent temperature control efficiency is provided. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view schematically illustrating an example of the configuration of a temperature control device. [Figure 2] FIG. 4 is a plan view schematically illustrating an example of the configuration of a flow regulating member. [Figure 3] FIG. 1 is a perspective view schematically illustrating an example of the configuration of a temperature control device. [Figure 4] FIG. 4 is a plan view schematically illustrating an example of the configuration of a flow regulating member. [Figure 5] FIG. 1 is a perspective view schematically illustrating an example of the configuration of a temperature control device. [Figure 6] FIG. 4 is a plan view schematically illustrating an example of the configuration of a flow regulating member. [Figure 7] FIG. 2 is a perspective view schematically illustrating an example of the configuration of a cover member. [Figure 8] FIG. 2 is a perspective view schematically illustrating an example of the configuration of a rectifying member. [Figure 9] FIG. 4 is a plan view schematically illustrating an example of the configuration of a flow regulating member. DETAILED DESCRIPTION OF THE INVENTION

[0008] In the present disclosure, a numerical range indicated using "to" indicates a range that includes the numerical values ​​before and after "to" as the minimum and maximum values, respectively. In the numerical ranges described in stages in this disclosure, the upper or lower limit value described in a certain numerical range may be replaced by the upper or lower limit value of another numerical range described in stages, or may be replaced by a value shown in an example. In this disclosure, when a material contains multiple substances corresponding to each component, the amount of each component in the material means the total amount of the multiple substances present in the material unless otherwise specified. When embodiments of the present disclosure are described with reference to the drawings, the configuration of the embodiment is not limited to the configuration shown in the drawings. Furthermore, the sizes of the components in each drawing are conceptual, and the relative size relationships between the components are not limited to these.

[0009] The temperature control device of the present disclosure includes: A base member; a heat sink disposed on the base member; a rectifying member that is disposed on the heat sink and contains a resin; a cover member disposed on the rectifying member, the cover member has an inlet for introducing a fluid into the temperature control device and an outlet for discharging the fluid from the temperature control device; The flow rectifying member is a temperature control device having a first flow path that guides the fluid introduced from the inlet to the heat sink, and a second flow path that guides the fluid discharged from the heat sink to the outlet.

[0010] In this disclosure, the term "temperature control device" refers to a device that controls the temperature of an object placed outside the temperature control device by contacting a fluid with a heat sink provided on a base member. Temperature control includes cooling, heating, keeping the object warm, keeping it cold, etc. The temperature control device of the present disclosure is, for example, a cooling device that suppresses an increase in temperature of a heat generating element disposed outside the temperature control device or reduces the temperature.

[0011] The temperature control device of the present disclosure has a rectifying member disposed between a heat sink disposed on a base member and a cover member. Therefore, the temperature control device of the present disclosure has excellent temperature control efficiency. The reasons for this are considered to be, for example, as follows. In a temperature control device that does not have a flow straightening member, the fluid introduced through the inlet comes into contact with the heat sink immediately, and the fluid that has received heat from the heat sink is discharged to the outside of the temperature control device through the outlet. In other words, the flow direction of the fluid that comes into contact with the heat sink is greatly restricted by the positions of the inlet and outlet provided in the temperature control device. From the viewpoint of improving the temperature control efficiency, it is desirable to control the flow direction of the fluid that comes into contact with the heat sink without being subject to the above-mentioned constraints. The temperature control device of the present disclosure, which includes a flow rectifying member, can control the flow direction of the fluid that comes into contact with the heat sink regardless of the positions of the fluid inlet and outlet. Hereinafter, each component constituting the temperature control device of the present disclosure will be described.

[0012] (Base material) The material of the base member that constitutes the temperature control device is not particularly limited. From the viewpoint of achieving a sufficient temperature control effect, the base member preferably contains a metal. The type of metal contained in the base member is not particularly limited and can be selected depending on the application of the temperature control device, etc. For example, the base member may be at least one selected from the group consisting of iron, copper, nickel, gold, silver, platinum, cobalt, zinc, lead, tin, titanium, chromium, aluminum, magnesium, manganese, and alloys containing these metals (stainless steel, brass, phosphor bronze, etc.). From the viewpoint of thermal conductivity, the metal is preferably aluminum, an aluminum alloy, copper or a copper alloy, and more preferably copper or a copper alloy. From the viewpoint of reducing weight and ensuring strength, aluminum and aluminum alloys are more preferable as metals.

[0013] (heat sink) The material of the heat sink is not particularly limited and can be selected depending on the application of the temperature control device. From the viewpoint of achieving a sufficient temperature control effect, the heat sink preferably contains a metal. For example, the heat sink may contain any of the metals mentioned above as the metal that may be contained in the base member. The type of heat sink is not particularly limited, and specific examples of the heat sink include a plate fin type or pin fin type heat sink in which plate-shaped or columnar protrusions called fins are arranged at intervals on a substrate, a corrugated fin type heat sink made of a wave-shaped folded plate, and a finless heat sink having no fins. The heat sink disposed on the base member may be a separate member from the base member, or may be the same member as the base member (that is, a part of the base member has the function of the heat sink).

[0014] (flow control member) The flow rectifying member has a first flow path that guides the fluid introduced from the inlet of the cover member to the heat sink. More specifically, the first flow path guides the fluid introduced from the inlet of the cover member to the heat sink side via a first opening that connects the surface of the straightening member facing the cover member with the surface facing the heat sink. The first flow path may further include a groove for allowing the fluid introduced from the inlet of the cover member to flow in addition to the first opening, or may consist of only the first opening. The first flow path may have one first opening or may have a plurality of first openings.

[0015] The flow rectifying member has a second flow path that guides the fluid discharged from the heat sink to the discharge port of the cover member. More specifically, the second flow path guides the fluid discharged from the heat sink to the discharge port of the cover member via a second opening that connects the surface of the straightening member facing the cover member with the surface facing the heat sink. The second flow path may further include a groove for allowing the fluid discharged from the heat sink to flow in addition to the second opening, or may consist of only the second opening. The second flow path may have one second opening or may have a plurality of second openings.

[0016] The first opening is preferably provided in a portion of the heat sink where the temperature change rate is greatest. If the rectifying member has multiple first openings, at least one of the multiple first openings is preferably provided in a portion of the heat sink where the temperature change rate is greatest.

[0017] The location where the heat sink has the highest temperature change rate is not particularly limited. For example, the location where the heat sink has the highest temperature change rate may be the location where the heat sink has the highest temperature rise rate, or it may be the central part of the heat sink.

[0018] The distance X1 from the location where the heat sink has the highest temperature change rate to the first opening is preferably smaller than the distance X2 from the location where the heat sink has the highest temperature change rate to the second opening (that is, it satisfies the condition X1 < X2). By satisfying the above conditions, the rectifying member can efficiently discharge the fluid that has received heat from the heat sink outside the temperature control device, and exhibit an excellent temperature control effect.

[0019] When the rectifying member has a plurality of first openings, it is preferable that at least one of the plurality of first openings satisfies the condition X1 < X2. When the rectifying member has a plurality of second openings, it is preferable that at least one of the plurality of second openings satisfies the condition X1 < X2.

[0020] When the rectifying member has a plurality of first openings and a plurality of second openings, the first openings and the second openings may be alternately arranged. When the first openings and the second openings are alternately arranged, the flow distance of the fluid contacting the heat sink can be adjusted by adjusting the distance between adjacent first openings and second openings. The aspect where the rectifying member has a plurality of first openings and a plurality of second openings is suitable, for example, when shortening the flow distance until the fluid that has received heat from the heat sink is discharged, particularly when shortening the flow distance from the first opening to the heat sink. The aspect where the rectifying member has a plurality of first openings and a plurality of second openings is suitable, for example, when there are a plurality of objects (for example, heat generating bodies) arranged outside the temperature control device, when the area of the heat sink is relatively large, or when it is desired to reduce the pressure loss of the temperature control device.

[0021] The rectifying member contains resin. A rectifying member containing resin is advantageous in that it is easier to manufacture than a metal rectifying member, can accommodate complex shapes, and can reduce the weight of the temperature control device. Furthermore, by selecting the type of resin, the rectifying member can be made appropriately deformable, preventing gaps from forming between adjacent members.

[0022] The type of resin contained in the flow rectifying member is not particularly limited, and can be selected depending on the application of the temperature control device, etc. The resin contained in the flow rectifying member may be a thermoplastic elastomer, a thermoplastic resin, a thermosetting resin, a thermosetting elastomer, or the like.

[0023] Examples of the thermoplastic elastomer include olefin-based thermoplastic elastomers, styrene-based thermoplastic elastomers, polyester-based thermoplastic elastomers, urethane-based thermoplastic elastomers, and amide-based thermoplastic elastomers.

[0024] Thermoplastic resins include polyethylene (PE), polypropylene (PP), polystyrene (PS), acrylonitrile / styrene resin (AS), acrylonitrile / butadiene / styrene resin (ABS), methacrylic resin (PMMA), polyvinyl chloride (PVC), polyamide (PA), polyacetal (POM), ultra-high molecular weight polyethylene (UHPE), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polymethylpentene (TPX), polycarbonate (PC), and modified polyphenylene ether. Examples of suitable polyimides include polyphenylene sulfide (PPE), polyphenylene sulfide (PPS), polyether ether ketone (PEEK), liquid crystal resin (LCP), polytetrafluoroethylene (PTFE), polyetherimide (PEI), polyarylate (PAR), polysulfone (PSF), polyethersulfone (PES), polyamideimide (PAI), polybutylene sulfide (PBS), polycyclohexylene dimethylene terephthalate (PCT), thermoplastic polyimide (TPI), polyphthalamide (PPA), and polyimide (PI).

[0025] Examples of the thermosetting resin include phenol resin, urea resin, melamine resin, unsaturated polyester, alkyd resin, epoxy resin, and diallyl phthalate resin.

[0026] Thermosetting elastomers include diene rubbers such as natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene copolymer rubber (SBR), chloroprene rubber (CR), and acrylonitrile-butadiene copolymer rubber (NBR), as well as non-diene rubbers such as butyl rubber (IIR), ethylene-propylene rubber (EPM), urethane rubber, silicone rubber, and acrylic rubber. The resin contained in the flow rectifying member may be used alone or in combination of two or more kinds.

[0027] The flow guide member may contain various additives in addition to the resin, such as fillers, heat stabilizers, antioxidants, pigments, weathering agents, flame retardants, plasticizers, dispersants, lubricants, release agents, and antistatic agents. The flow rectifying member may contain one or more types of fibers, that is, the flow rectifying member may be made of a fiber-reinforced resin. Examples of fibers include carbon fibers, glass fibers, potassium titanate fibers, aluminum borate fibers, ceramic fibers, metal fibers, boron fibers, silicon carbide fibers, asbestos fibers, rock wool fibers, aramid fibers, polyethylene fibers, polyparaphenylene benzobisoxazole fibers, and cellulose fibers.

[0028] The flow guide member is preferably an injection molded product made of a material containing a thermoplastic resin (thermoplastic resin material) from the viewpoint of ease of molding into a three-dimensional shape or a complex shape.

[0029] The portion of the rectifying member that contacts the heat sink may include an elastomer. If the portion of the rectifying member that comes into contact with the heat sink contains an elastomer, the portion of the rectifying member that comes into contact with the heat sink will easily deform to follow the shape of the heat sink (for example, the shape of the tips of the fins that make up the heat sink), which will prevent gaps from forming between the rectifying member and the heat sink and prevent short-path flow caused by fluid leaking from those gaps.

[0030] When the portion of the rectifying member that contacts the heat sink contains an elastomer, the entire rectifying member may contain the elastomer, or only the portion of the rectifying member that contacts the heat sink may contain the elastomer. That is, the rectifying member may be a combination of a portion that contains an elastomer and a portion that contains a resin other than the elastomer. From the viewpoint of suppressing deformation of the rectifying member due to water pressure, the elastomer may be blended with the above-mentioned fibers. When the flow rectifying member contains an elastomer, the elastomer may be a polymeric substance that exhibits rubber elasticity at the operating temperature of the temperature control device (for example, 5°C to 60°C). For example, the elastomer may have a tensile modulus of 6.0 x 10 at 25°C. 8 An elastomer having a tensile modulus of elasticity of less than 100 Pa can be used. The tensile modulus is a value measured in accordance with JIS K7161-2:2014.

[0031] (Cover member) The material of the cover member constituting the temperature control device is not particularly limited. From the viewpoint of achieving a sufficient temperature control effect, the cover member preferably contains a metal. The type of metal contained in the cover member is not particularly limited and can be selected depending on the application of the temperature control device, etc. For example, the cover member may contain any of the metals mentioned above as the metal that may be contained in the base member. When the base member and the cover member each contain a metal, the metals contained in the base member and the cover member may be the same or different.

[0032] The cover member has an inlet for introducing a fluid into the temperature control unit and an outlet for discharging the fluid from the temperature control unit.

[0033] The positions of the inlet and outlet in the cover member are not particularly limited. For example, the inlet and outlet may be arranged on the main surface (the surface with the largest area) of the cover member, or on a side surface of the cover member. In the temperature control device of the present disclosure, the flow direction of the fluid that comes into contact with the heat sink is not restricted by the positions of the inlet and outlet in the cover member, i.e., the positions of the inlet and outlet in the cover member can be determined without considering the flow direction of the fluid that comes into contact with the heat sink.

[0034] (Frame) The temperature control device may further include a frame disposed on a side of the temperature control device. The material of the frame is not particularly limited and can be selected depending on the application of the temperature control device. From the viewpoint of reducing the weight of the temperature control device, it is preferable that the frame contains a resin. For example, the frame may contain the resins mentioned above as the resins that may be contained in the flow rectifying member. From the viewpoint of moldability, the frame preferably contains a thermoplastic resin.

[0035] From the viewpoint of the airtightness and dimensional stability of the temperature control device, it is preferable that the frame be in a state of being joined to the base member and the cover member.

[0036] In this disclosure, "joined" means a state in which multiple objects are fixed together without using any fixing means such as adhesives, screws, or the like. In this disclosure, "fixed" means that the positions of multiple objects relative to each other are immovable.

[0037] The state in which the frame is joined to the base member and the cover member can be achieved, for example, by bringing the frame material, which has fluidity due to melting or the like, into contact with the surfaces of the base member and the cover member. There are no particular limitations on the method for bringing the flowable frame material into contact with the surfaces of the base member and the cover member, and it can be carried out by a known method such as injection molding. For example, this can be done by placing the base member and cover member in a mold having a cavity in the shape of the frame, and injecting a fluid frame material through a through-hole (gate) provided in the mold.

[0038] From the viewpoint of bonding with the frame body, it is preferable that an uneven structure is formed on the surface of the base member and the cover member, and it is more preferable that the material of the frame body penetrates into the uneven structure on the surface of the base member and the cover member. When the fluid frame material is brought into contact with the surfaces of the base member and cover member, which have an uneven structure, the frame material penetrates into the uneven structure on the surfaces of the base member and cover member, creating an anchor effect and firmly fixing the frame body to the surfaces of the base member and cover member.

[0039] When the base member and the cover member have an uneven surface, the Rz of the surfaces of the base member and the cover member is preferably 2 μm or more, more preferably 5 μm or more, and even more preferably 10 μm or more, and may be 0.5 μm or less. In this disclosure, the Rz of the surfaces of the base member and the cover member is a height-direction parameter called the "maximum height," which is calculated by extracting a portion of the roughness curve measured with a roughness meter over a reference length (500 μm) and calculating it as the sum of the highest part (maximum peak height: Rp) and the deepest part (maximum valley depth: Rv).

[0040] The surfaces of the base member and the cover member that come into contact with the frame are preferably roughened, which can further increase the bonding strength with the frame.

[0041] Examples of methods for roughening the base member and cover member include a laser method as disclosed in Japanese Patent No. 4020957; a method of immersing the base member and cover member in an aqueous solution of an inorganic base such as NaOH or an inorganic acid such as HCl or HNO3; a method of treating the surfaces of the base member and cover member by anodic oxidation as disclosed in Japanese Patent No. 4541153; a displacement crystallization method in which etching is performed with an acid-based etching solution containing an acid-based etching agent (preferably an inorganic acid, ferric ions, or cupric ions) and, if necessary, manganese ions, aluminum chloride hexahydrate, sodium chloride, etc. as disclosed in WO 2015-8847; a method of immersing the base member and cover member in an aqueous solution of one or more selected from hydrazine hydrate, ammonia, and water-soluble amine compounds (NMT method) as disclosed in WO 2009 / 31632; a hot water treatment method as disclosed in JP 2008-162115 A; and roughening treatments such as blasting.

[0042] Among the above methods, treatment with an acid etching agent is preferred from the viewpoint of increasing the bonding strength between the base member and the cover member and the frame. The treatment with an acid-based etching agent may be, for example, a method in which the following steps (1) to (3) are carried out in this order.

[0043] (1) Pretreatment process A pretreatment is performed to remove oxide films and hydroxide films present on the surfaces of the base member and cover member. This is usually done by mechanical polishing or chemical polishing. If the surfaces of the base member and cover member are heavily contaminated with machine oil or the like, treatment with an alkaline aqueous solution such as a sodium hydroxide aqueous solution or a potassium hydroxide aqueous solution, or degreasing may be performed.

[0044] (2) Treatment process using acid etching agent After step (1), the base member and the cover member are treated with an acid-based etching agent containing at least one of ferric ions and cupric ions and an acid, to elute the zinc-containing coating on the surfaces of the base member and the cover member and form a micrometer-order fine uneven shape.

[0045] (3) Post-processing After the step (2), the base member and the cover member are washed. This usually involves rinsing with water and drying. An ultrasonic cleaning step may also be included to remove smut.

[0046] From the viewpoint of increasing the roughness index of the base member and the cover member, the roughening treatment may be performed two or more times. For example, the above steps (1) to (3) may be performed to form a micron-order uneven structure (rough base surface) on the surface of the base member and the cover member, and then a nanometer-order uneven structure (fine rough surface) may be formed thereon.

[0047] As a method for forming a fine roughened surface after forming a base roughened surface on the surfaces of the base member and the cover member, for example, the base member and the cover member on which the base roughened surface has been formed are subjected to a standard electrode potential E 0 An example of such a method is to contact the material with an oxidizing acidic aqueous solution containing a metal cation having a pH of more than -0.2 and not more than 0.8, preferably more than 0 and not more than 0.5. The oxidizing acidic aqueous solution is 0 It is preferable that the metal cations contained therein do not have a value of -0.2 or less. Standard electrode potential E at 25°C 0 The metal cations for which the value is greater than -0.2 and less than 0.8 are Pb 2+ , Sn 2+ , Ag + , Hg 2+ , Cu 2+ Cu 2+ is preferred. Cu 2+ Examples of compounds that generate copper include inorganic compounds such as copper hydroxide, copper (II) oxide, copper (II) chloride, copper (II) bromide, copper sulfate, and copper nitrate, with copper oxide being preferred.

[0048] Examples of the oxidizing acidic aqueous solution include nitric acid and an acid obtained by mixing nitric acid with hydrochloric acid, hydrofluoric acid, or sulfuric acid. Furthermore, an aqueous solution of a percarboxylic acid, such as peracetic acid or performic acid, may also be used. When nitric acid is used as the oxidizing acidic aqueous solution and cupric oxide is used as the metal cation generating compound, the nitric acid concentration constituting the aqueous solution is, for example, 10% to 40% by mass, preferably 15% to 38% by mass, and more preferably 20% to 35% by mass. Furthermore, the copper ion concentration constituting the aqueous solution is, for example, 1% to 15% by mass, preferably 2% to 12% by mass, and more preferably 2% to 8% by mass.

[0049] The temperature at which the base member having the roughened base surface and the cover member are brought into contact with the oxidizing acidic aqueous solution is not particularly limited, but in order to complete the roughening at an economical speed while controlling the exothermic reaction, a treatment temperature of, for example, room temperature to 60° C., preferably 30° C. to 50° C. is used. The treatment time is, for example, in the range of 1 minute to 15 minutes, preferably 2 minutes to 10 minutes.

[0050] When a concave-convex structure is formed on the surface of the base member and the cover member, the average pore size of the recesses in the concave-convex structure may be, for example, 5 nm to 250 μm, preferably 10 nm to 150 μm, and more preferably 15 nm to 100 μm. The average pore depth of the recesses in the uneven structure may be, for example, 5 nm to 250 μm, preferably 10 nm to 150 μm, and more preferably 15 nm to 100 μm. When either or both of the average pore diameter and the average pore depth of the recesses in the concave-convex structure are within the above numerical ranges, stronger bonding tends to be obtained.

[0051] The average pore size and average pore depth of the recesses in the concave-convex structure can be determined using an electron microscope or laser microscope. Specifically, the surfaces and cross sections of the surfaces of the base member and cover member are photographed. From the photographs obtained, 50 recesses are arbitrarily selected, and the average pore size and average pore depth of the recesses can be calculated as arithmetic mean values, respectively, from the pore size and pore depth of the recesses.

[0052] (Other parts) The temperature control device may include components other than those described above, as necessary. For example, the temperature control device may have parts such as joints for connecting pipes used for introducing and discharging fluids, and reinforcing ribs provided on the outside of the temperature control device.

[0053] When the temperature control device has a component, the component may be bonded to the base member or the cover member. When bonding the component to the base member or the cover member, bonding may be performed by the method of bonding the frame to the base member or the cover member described above.

[0054] (Example of temperature control device configuration) An example of the configuration of a temperature control device according to the present disclosure will be described with reference to the drawings. FIG. 1 is a perspective view schematically illustrating an example of the configuration of a temperature control device of the present disclosure. The temperature control device shown in FIG. A base member 1; a heat sink 2 disposed on the base member; a rectifying member 3 including a resin and disposed on the heat sink 2; and a cover member 4 disposed on the flow regulating member 3. The cover member 4 has an inlet 5 for introducing a fluid into the temperature control device and an outlet 6 for discharging the fluid from the temperature control device. Parts (joints) for connecting piping are attached to the inlet 5 and the outlet 6, respectively.

[0055] FIG. 2 is a plan view schematically showing the surface of the flow regulating member 3 shown in FIG. 1 that faces the cover member 4. As shown in FIG. As shown in FIG. 2, the flow straightening member 3 has a first flow path 7 that guides the fluid introduced from the inlet 5 to the heat sink 2, and a second flow path 8 that guides the fluid discharged from the heat sink 2 to the outlet 6. The first flow path 7 has a first opening 7a that connects the surface of the flow rectifying member 3 that faces the cover member 4 with the surface that faces the heat sink 2. Therefore, the fluid introduced from the inlet 5 moves along the groove 7b of the first flow path 7 to the first opening 7a and then comes into contact with the heat sink 2. The second flow path 8 has a second opening 8a that connects the surface of the rectifying member 3 that faces the cover member 4 with the surface that faces the heat sink 2. Therefore, the fluid that has come into contact with the heat sink 2 is taken out of the heat sink 2 through the second opening 8a and is discharged from the outlet 6 to the outside of the temperature control device.

[0056] By appropriately arranging the positions of the first opening 7a and the second opening 8a in the flow rectifying member 3, the fluid introduced into the temperature control device can be brought into contact with the heat sink 2 at a desired position. For example, by positioning the first opening 7a of the straightening member 3 at a position corresponding to the center of the heat sink 2 as shown in Figure 2, the fluid that has not received heat from the heat sink 2 can be brought into contact with the center of the heat sink 2. For example, by arranging the second opening 8a of the rectifying member 3 at a position corresponding to the end of the heat sink 2 as shown in Figure 2, the fluid that has received heat from the heat sink 2 can be extracted from the end of the heat sink 2.

[0057] FIG. 3 is a perspective view schematically illustrating an example of the configuration of a temperature control device of the present disclosure. In the temperature control device shown in FIG. 3, the positions of the inlet 5 and outlet 6 provided in the cover member 4 are different from the positions of the inlet 5 and outlet 6 shown in FIG.

[0058] FIG. 4 is a plan view schematically showing the surface of the flow regulating member 3 shown in FIG. 3 that faces the cover member 4. As shown in FIG. 4, the first flow path 7 of the flow rectifying member 3 has three first openings 7a, and the second flow path 8 has two second openings 8a. Therefore, the fluid introduced from the inlet 5 branches and moves along the grooves 7b of the first flow path 7 to the three first openings 7a, and then comes into contact with the heat sink 2. The fluid that has come into contact with the heat sink 2 is taken out through the two second openings 8a, moves along the grooves 8b, and is discharged from the outlet 6 to the outside of the temperature control device.

[0059] FIG. 5 is a perspective view schematically illustrating an example of the configuration of a temperature control device of the present disclosure. In the temperature control device shown in FIG. 5, the positions of the inlet 5 and outlet 6 provided in the cover member 4 are reversed from the positions of the inlet 5 and outlet 6 shown in FIG.

[0060] FIG. 6 is a plan view schematically showing the surface of the flow regulating member 3 shown in FIG. 5 that faces the cover member 4. As shown in FIG. 6, the first flow path 7 of the flow rectifying member 3 has two first openings 7a, and the second flow path 8 has three second openings 8a. Therefore, the fluid introduced from the inlet 5 branches and moves along the grooves 7b of the first flow path 7 to the two first openings 7a, and then comes into contact with the heat sink 2. The fluid that has come into contact with the heat sink 2 is taken out through the three second openings 8a, moves along the grooves 8b, and is discharged from the outlet 6 to the outside of the temperature control device.

[0061] FIG. 7 is a perspective view that schematically shows an example of the configuration of the cover member 4 in the temperature control device of the present disclosure. In the cover member 4 shown in FIG. 7, the inlet 5 and outlet 6 (not shown) are provided on the side surface of the cover member 4 rather than on the main surface of the cover member 4.

[0062] FIG. 8 is a perspective view that schematically shows an example of the configuration of the flow regulating member 3 that is used in combination with the cover member 4 shown in FIG. FIG. 9 is a plan view schematically showing the surface of the flow regulating member 3 shown in FIG. 8 that faces the cover member 4. As shown in FIG. The straightening member 3 shown in Figures 8 and 9 differs from the straightening member 3 shown in Figure 4 in that the first flow path 7 and the second flow path 8 are in communication with the inlet 5 and the outlet 6 provided on the side of the cover member 4.

[0063] The configurations of the temperature control device shown in the above drawings are examples of embodiments of the present disclosure, and the configuration of the temperature control device of the present disclosure is not limited to these.

[0064] The dimensions of the temperature control device and the components that make up the temperature control device of the present disclosure are not particularly limited and can be selected depending on the application of the temperature control device, etc.

[0065] The area of ​​the main surface of the temperature control device is, for example, 50 cm 2 ~5,000cm 2 may be in the range of The overall thickness of the temperature control device (or the minimum thickness if the thickness is not constant) may be, for example, within a range of 5 mm to 50 mm. From the perspective of achieving a thinner design, the thickness of the temperature control device may be 20 mm or less.

[0066] The thickness of the base member and the cover member (if the thickness is not constant, the minimum thickness) may be, for example, 0.5 mm to 10 mm, and preferably 1 mm to 5 mm. The thickness of the rectifying member (the minimum thickness if the thickness is not constant) may be, for example, 1.5 mm to 10 mm, and preferably 3 mm to 6 mm.

[0067] The type of fluid introduced into the temperature control device of the present disclosure is not particularly limited and can be selected depending on the application of the temperature control device, etc. Specific examples of the fluid include water, organic solvents, and oils.

[0068] The use of the temperature control device of the present disclosure is not particularly limited. For example, it is suitable for use in cooling heat-generating devices such as CPUs installed in computers and secondary batteries installed in electric vehicles. In addition to the above uses, the temperature control device of the present disclosure is suitable for use in any use requiring temperature control, such as air conditioning equipment, hot water supply equipment, and power generation equipment.

[0069] (Example of using a temperature control device) The temperature control device of the present disclosure is used, for example, with at least a portion of the outer surface of the temperature control device in contact with an object to be temperature controlled. The outer surface that comes into contact with the object to be temperature-controlled may be the outer surface of the base member or the cover member. The number of objects that come into contact with the outer surface of the temperature control device may be one or more. The position of the object to be temperature controlled (or the portion of the object with the largest temperature change rate) in contact with the outer surface of the temperature control device corresponds to the portion of the heat sink with the largest temperature change rate. Therefore, it is preferable that the first opening of the rectifying member included in the temperature control device is provided at or near the position corresponding to the object to be temperature controlled (or the portion with the largest temperature change rate). [Example]

[0070] Hereinafter, embodiments of the present disclosure will be described in detail with reference to examples, but the present disclosure is not limited to the descriptions of these examples.

[0071] Example 1 A temperature control device with the configuration shown in Figure 1 was fabricated, and a test was conducted in which one heating element (250 W) was placed in the center of the base member, and water (45°C) was circulated as a refrigerant at a flow rate of 0.5 L / min. Five minutes after the start of the test, the surface temperature (°C) of the heating element and the pressure loss (psi) were measured. The results are shown in Table 1.

[0072] (Pressure loss measurement method) Pressure gauge 1 was placed near the inlet for introducing the refrigerant into the temperature control device, and pressure gauge 2 was placed near the outlet for discharging the refrigerant from the temperature control device. The pressure (P1) of the refrigerant just before it was introduced into the temperature control device was measured with pressure gauge 1, and the pressure (P2) of the refrigerant just after it was discharged from the temperature control device was measured with pressure gauge 2. The pressure loss (psi) was calculated from the measured values ​​using the following formula. Pressure loss = P1 - P2

[0073] The materials of the components used in the temperature control device are as follows: Base material, heat sink, and cover material: Copper alloy (C1100, thermal conductivity 391 W / m K) Material of the flow control material: Olefin-based thermoplastic elastomer (Milastomer W600NS, manufactured by Mitsui Chemicals) containing 10% glass fiber Frame material: A mixture of polyphenylene sulfide (Polyplastics, 1135MF1) and glass fiber (35% by mass)

[0074] Example 2 A temperature control device was fabricated and tested in the same manner as in Example 1, except that the materials of the base member, heat sink, and cover member were changed to aluminum alloy (A6063, thermal conductivity 209 W / m K). The results are shown in Table 1.

[0075] Example 3 A temperature control device having the configuration shown in Fig. 3 was fabricated and tested in the same manner as in Example 1. The materials of the components used in the temperature control device were the same as in Example 1. The results are shown in Table 1.

[0076] Example 4 A temperature control device was fabricated and tested in the same manner as in Example 3, except that the materials of the base member, heat sink, and cover member were changed to aluminum alloy (A6063, thermal conductivity 209 W / m K). The results are shown in Table 1.

[0077] (Comparative Example 1) A temperature control device was produced and tested in the same manner as in Example 1, except that no rectifying member was used. The results are shown in Table 1.

[0078] (Comparative Example 2) A temperature control device was produced and tested in the same manner as in Example 2, except that no straightening member was used. The results are shown in Table 1.

[0079] (Comparative Example 3) A temperature control device was fabricated and tested in the same manner as in Example 2, except that no rectifying member was used and a sealing member (a silicone rubber sheet) was placed between the heat sink and the cover member. The results are shown in Table 1.

[0080] [Table 1]

[0081] As shown in Table 1, the temperature control devices of Examples 1 to 4, in which a straightening member is disposed between the heat sink and the cover member, exhibit a superior effect in suppressing temperature rise compared to the temperature control devices of Comparative Examples 1 to 3, in which no straightening member is disposed between the heat sink and the cover member. This is thought to be because the cooling water guided by the first flow path of the straightening member comes into contact with the heat sink at a position corresponding to the center of the heat sink, where the temperature rise due to the heat-generating element is greatest, thereby improving cooling efficiency. The reason why the temperature rise suppression effect of Comparative Example 3, which uses a sealing member, is greater than the temperature rise suppression effect of Comparative Example 2, which does not use a sealing member, is thought to be because the gap (0.2 mm) between the heat sink and the cover member is blocked by the sealing member, preventing short-passing of the cooling water. Comparing the results of Examples 2 and 4 with those of Comparative Example 3, it can be seen that the temperature rise suppression effect of providing a straightening member between the heat sink and the cover member is greater than the temperature rise suppression effect of sealing the gap between the heat sink and the cover member.

[0082] As shown in Table 1, the temperature control devices of Examples 3 and 4, in which the number of first openings and second openings provided in the straightening member is multiple, have smaller pressure loss values ​​than the temperature control devices of Examples 1 and 2, in which the number of first openings and second openings provided in the straightening member is one each. A small value of pressure loss in the temperature control device is advantageous in that, for example, the discharge pressure of the pump that supplies fluid to the temperature control device can be suppressed, and the capacity of the pump can be reduced. The temperature control devices of Examples 3 and 4, which have small pressure loss values, have a higher surface temperature of the heating element than the temperature control devices of Examples 1 and 2, which have large pressure loss values, but because the pressure loss is low, a constant standard flow rate (flow rate) can be maintained, and therefore a constant standard cooling effect can be maintained. [Explanation of symbols]

[0083] 1 Base material 2 heat sinks 3 Straightening member 4 Cover member 5 Introduction 6 Outlet 7 First flow path 8 Second flow path 9 Frame

Claims

1. A base member 1; a heat sink 2 disposed on the base member 1; a rectifying member 3 that is disposed on the heat sink 2 and contains a resin; a cover member 4 disposed on the flow rectifying member 3, The cover member 4 has an inlet 5 for introducing a fluid into the temperature control device and an outlet 6 for discharging the fluid from the temperature control device, The straightening member 3 has a first flow path 7 that guides the fluid introduced from the inlet 5 to the heat sink 2, and a second flow path 8 that guides the fluid discharged from the heat sink 2 to the outlet 6, a temperature control device.

2. the first flow path 7 has a first opening 7a that communicates between a surface of the rectifying member 3 that faces the cover member 4 and a surface of the rectifying member 3 that faces the heat sink 2, 2 . The temperature control device according to claim 1 , wherein the second flow path has a second opening that communicates between a surface of the flow rectifying member that faces the cover member and a surface of the flow rectifying member that faces the heat sink.

3. The temperature control device according to claim 2 , wherein the first flow path (7) has a plurality of first openings (7a).

4. The temperature control device according to claim 2 , wherein the first flow path (8) has a plurality of second openings (8a).

5. The temperature control device according to claim 2 , wherein the first opening (7 a) is provided in a portion of the heat sink (2) where a temperature change rate is greatest.

6. 3. The temperature control device according to claim 2, wherein a distance X1 from the portion of the heat sink where the temperature change rate is greatest to the first opening 7a is smaller than a distance X2 from the portion of the heat sink where the temperature change rate is greatest to the second opening 8a.

7. The temperature control device according to claim 1 , wherein a portion of said rectifying member that contacts said heat sink includes an elastomer.

8. The temperature control device according to claim 1 , further comprising a frame (9) disposed on a side of the temperature control device.

9. The temperature control device according to claim 8 , wherein the frame (9) is joined to the base member (1) and the cover member (4), respectively.

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