CN111223825A - Radiator and cooling device - Google Patents
Radiator and cooling device Download PDFInfo
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- CN111223825A CN111223825A CN201911170449.1A CN201911170449A CN111223825A CN 111223825 A CN111223825 A CN 111223825A CN 201911170449 A CN201911170449 A CN 201911170449A CN 111223825 A CN111223825 A CN 111223825A
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- fins
- heat sink
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- 238000001816 cooling Methods 0.000 title claims abstract description 19
- 238000003466 welding Methods 0.000 claims description 14
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 18
- 238000005219 brazing Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000010438 heat treatment Methods 0.000 description 14
- 238000005452 bending Methods 0.000 description 13
- 239000002826 coolant Substances 0.000 description 10
- 238000004080 punching Methods 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07
- H01L21/4814—Conductive parts
- H01L21/4871—Bases, plates or heatsinks
- H01L21/4882—Assembly of heatsink parts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
- H01L23/3672—Foil-like cooling fins or heat sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/06—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
Abstract
本发明涉及散热器、冷却装置，提供能够使多个翅片的间隔高精度地均匀的散热器等。所述散热器具有板状且在与板面正交的方向排列的多个翅片(11)和向多个翅片(11)各自的外侧突出的多个突出部(12)，多个突出部(12)中的、相邻的突出部(12)的在多个翅片(11)的排列方向上的端部接触。
The present invention relates to a heat sink and a cooling device, and provides a heat sink and the like that can precisely uniformize the intervals of a plurality of fins. The heat sink has a plurality of fins (11) arranged in a plate shape and arranged in a direction perpendicular to the plate surface, and a plurality of protrusions (12) protruding to the outside of each of the plurality of fins (11), and the plurality of protrusions Among the parts (12), the ends of the adjacent protruding parts (12) in the arrangement direction of the plurality of fins (11) are in contact with each other.
Description
Technical Field
The present invention relates to a radiator and a cooling device.
Background
In recent years, as a radiator for a liquid-cooled cooling device for cooling power devices (semiconductor elements) such as IGBTs (Insulated Gate Bipolar transistors) used in power control devices mounted on electric vehicles, hybrid electric vehicles, and the like, a radiator having a plurality of fin plates has been proposed.
For example, a radiator for a liquid-cooled cooling device described in patent document 1 is configured by a plurality of fin plates and a connecting member that integrally connects all the fin plates. The fin plate is composed of a plate body in a vertically long square shape and narrow portions integrally provided at both end portions of the plate body. All the fin plates are arranged at intervals in the plate thickness direction of the plate body. The connecting member is in a corrugated shape including flat plate portions integrally provided with the narrow width portions of the plate body and arc-shaped portions alternately connecting the adjacent flat plate portions at upper and lower ends thereof. The thickness of the plate body, the narrow width part and the flat plate part is equal, and two side faces of the plate body, two side faces of the narrow width part and two side faces of the flat plate part are positioned on the same plane.
Prior art documents
Patent document
Patent document 1: japanese patent laid-open publication No. 2018-107365
Disclosure of Invention
Problems to be solved by the invention
In an apparatus for cooling a heat generating body such as a power device using a plurality of fins, in order to uniformly cool the heat generating body, it is desirable that cooling water uniformly flow through gaps between mutually adjacent fins. Therefore, it is desirable that the plurality of fins be uniformly spaced.
The invention aims to provide a heat sink and the like capable of making intervals of a plurality of fins uniform with high precision.
Means for solving the problems
The present invention has been made in view of the above problems, and an object of the present invention is to provide a heat sink including a plurality of plate-shaped fins arranged in a direction orthogonal to a plate surface, and a plurality of protruding portions protruding outward of the plurality of fins; ends of adjacent ones of the plurality of projections in the arrangement direction of the plurality of fins are in contact.
Here, the fin may have a rectangular shape, and the protruding portion may protrude outward from an end portion of the fin in the longitudinal direction.
Further, the protruding portion may have a plate shape in which the arrangement direction of the plurality of fins is parallel to the plate surface.
Further, one end of the protruding portion in the arrangement direction may have a first parallel portion parallel to the plate surface of the fin and a convex portion protruding from the first parallel portion, and the other end may have a second parallel portion parallel to the plate surface of the fin and a concave portion recessed from the second parallel portion; the convex portion and the concave portion are fitted in a state where the one-side parallel portion and the other-side parallel portion of the adjacent protruding portions are in contact.
In addition, the fin may have a rectangular shape; the protruding portion is provided at a central portion in the width direction of the fin.
Alternatively, the fins may be rectangular; the protruding portion is provided at one end portion of the fin in the width direction.
Further, the adjacent protruding portions may be joined to each other by welding or bonding.
From another viewpoint, the present invention is a heat sink including a plurality of rectangular fins arranged in a plate-like shape in a direction orthogonal to a plate surface, and a plurality of protruding portions protruding outward from respective longitudinal end portions of the plurality of fins; adjacent ones of the plurality of projections are joined to each other by welding or bonding.
From another aspect, the present invention provides a cooling apparatus comprising: the radiator described above; and a case that houses the heat sink and allows the coolant to flow between the plurality of fins of the heat sink.
Effects of the invention
According to the present invention, it is possible to provide a heat sink and the like capable of making the intervals between a plurality of fins uniform with high accuracy.
Drawings
Fig. 1 is a perspective view of a liquid-cooled cooling device according to a first embodiment.
Fig. 2 is a sectional view of a portion II-II of fig. 1.
Fig. 3 is a sectional view of the section III-III of fig. 2.
Fig. 4 is a diagram for explaining a method of manufacturing a heat sink.
Fig. 5 is a diagram for explaining a method of manufacturing the heat sink.
Fig. 6 is a perspective view showing a state where the protruding portions are welded to each other by laser welding.
FIG. 7 is an enlarged view of a bending sheet.
Fig. 8 is a view showing a modification of the protruding portion.
Fig. 9 is a schematic configuration diagram of a heat sink according to a second embodiment.
Fig. 10 is a diagram showing a state in which the radiator and the cover are joined.
Fig. 11 is a schematic configuration diagram of a heat sink according to a third embodiment.
Fig. 12 is a schematic configuration diagram of a heat sink according to a fourth embodiment.
Fig. 13 is a schematic configuration diagram of a heat sink according to a fifth embodiment.
Fig. 14 is a schematic configuration diagram of a heat sink according to a sixth embodiment.
Description of the reference symbols
1 … liquid-cooled cooling device, 10, 200, 300, 400, 500, 600 … radiator, 11, 211, 311, 411, 511, 611 … fin, 12, 212, 312, 412 … projection, 13, 213, 313, 413 … connection part, 20 … casing, 30 … inlet joint, 40 … outlet joint, P … heating element, I … insulating component
Detailed Description
Hereinafter, embodiments will be described in detail with reference to the drawings.
< first embodiment >
Fig. 1 is a perspective view of a liquid-cooled cooling device 1 according to a first embodiment.
Fig. 2 is a sectional view of a portion II-II of fig. 1.
Fig. 3 is a sectional view of the section III-III of fig. 2.
The liquid-cooled cooling device 1 of the embodiment includes: a heat sink 10 having a plurality of rectangular fins 11, and a case 20 for housing the heat sink 10. The liquid-cooled cooling device 1 further includes an inlet joint 30 through which the cooling liquid flows from the outside to the inside of the casing 20, and an outlet joint 40 through which the cooling liquid flows from the inside to the outside of the casing 20. Hereinafter, the longitudinal direction of the rectangular fins 11 is sometimes referred to as the left-right direction, the width direction of the fins 11 is sometimes referred to as the up-down direction, and the arrangement direction of the plurality of fins 11 is sometimes referred to as the front-back direction.
The liquid-cooled cooling device 1 is a device that cools a heating element P attached to an outer surface (upper surface in the present embodiment) of a case 20 with a flat plate-shaped insulating member I interposed therebetween, using a cooling liquid that flows inside the case 20 and a radiator 10. The heating element P can be exemplified by a power semiconductor device such as an insulated Gate bipolar transistor (igbt). The heating element P can be exemplified by an IGBT module in which an IGBT and a control circuit for controlling the IGBT are packaged, and an intelligent power module in which the IGBT module and a self-protection function are packaged.
(case 20)
The case 20 includes a case body 21 to which the heating element P is attached via the insulating member I, and a cover 22 covering an opening of the case body 21.
The case body 21 includes a flat plate-shaped top portion 21a, side portions 21b projecting from respective end portions of the top portion 21a in a direction (downward) orthogonal to the top portion 21a, and flange portions 21c projecting from respective end portions of the side portions 21b outward in the direction orthogonal to the side portions 21 b. The heating element P is attached to the center portion of the surface (upper surface) of the top portion 21a opposite to the side provided with the side portion 21b, with the insulating member I interposed therebetween. Further, an inlet through hole 21d and an outlet through hole 21e that penetrate so as to communicate the inside and the outside of the case 20 are formed in the top portion 21a on the outer sides in the left-right direction of the portion where the insulating member I and the heating element P are disposed.
The cover 22 is flat and rectangular, and is larger than the flange portion 21c of the case body 21. Through holes 221 through which bolts or the like for attaching the liquid-cooled cooling device 1 to another member are passed are formed in 4 corners of the cover 22.
The case 20 is configured in a box shape by brazing the flange portion 21c of the case body 21 and the cover 22 so that the heat sink 10 can be housed inside. The case body 21 and the cover 22 can be formed using an aluminum brazing sheet, for example. In this case, the solder layer is disposed on at least one of the surfaces facing each other.
The housing body 21 and the cover 22 are brazed to form an inlet-side space 23 below the inlet through-hole 21d in the housing 20 and an outlet-side space 24 below the outlet through-hole 21e in the housing 20.
(Inlet fitting 30)
The inlet joint 30 has a cylindrical portion 31 and a rectangular parallelepiped portion 32, and is formed with a hollow inside so as to allow the coolant to flow therethrough. One end (right end) of the cylindrical portion 31 is open, and the other end is connected to the rectangular parallelepiped portion 32. A through hole 33 is formed in one surface (lower surface) of the rectangular parallelepiped portion 32 to communicate the inside and outside of the inlet joint 30. The inlet joint 30 is brazed to the case body 21 in a state where a surface on which the through hole 33 is formed is placed on a surface (upper surface) of the top portion 21a of the case body 21 on which the heating element P is mounted. At this time, the inside of the inlet joint 30 and the inside of the housing body 21 communicate with each other through the through hole 33 of the inlet joint 30 and the inlet through hole 21d of the housing body 21.
(Outlet connection 40)
The outlet joint 40 has a cylindrical portion 41 and a rectangular parallelepiped portion 42, and is formed as a hollow so as to allow the coolant to flow therethrough. One end (left end) of the cylindrical portion 41 is open, and the other end is connected to the rectangular parallelepiped portion 42. A through hole 43 that communicates the inside and the outside of the outlet joint 40 is formed in one surface (lower surface) of the rectangular parallelepiped portion 42. The outlet joint 40 is brazed to the case body 21 in a state where a surface in which the through hole 43 is formed is placed on a surface (upper surface) of the ceiling portion 21a of the case body 21 on which the heating element P is mounted. At this time, the interior of the outlet joint 40 and the interior of the housing body 21 communicate with each other via the through hole 43 of the outlet joint 40 and the outlet through hole 21e of the housing body 21.
(heating radiator 10)
The heat sink 10 includes a plurality of plate-shaped fins 11 arranged in a direction orthogonal to the plate surface, a plurality of protrusions 12 provided on the outer sides of the plurality of fins 11, and a connecting portion 13 connecting the fins 11 and the protrusions 12.
The fins 11 are rectangular and arranged such that the width direction of the fins 11 is the vertical direction shown in fig. 1, and the longitudinal direction of the fins 11 is the horizontal direction shown in fig. 1. The plurality of fins 11 are arranged at predetermined intervals (hereinafter, may be referred to as "predetermined intervals") in a direction perpendicular to the surface of the fins 11. The fins 11 are arranged in the row direction, which is the front-rear direction shown in fig. 1.
The projecting portion 12 includes a left projecting portion 12l and a right projecting portion 12r projecting outward from both ends of the fin 11 in the longitudinal direction. The left and right projecting portions 12l and 12r are bilaterally symmetrical. Hereinafter, the left protruding portion 12l will be described as a representative. The left protrusion 12l and the right protrusion 12r may be collectively referred to as the protrusion 12.
The protruding portion 12 is plate-shaped in which the arrangement direction (front-rear direction) of the plurality of fins 11 is parallel to the plate surface. One end 121 in the arrangement direction of the protruding portions 12 has one-side parallel portions 121a parallel to the plate surfaces of the fins 11 and protruding portions 121b protruding from the one-side parallel portions 121 a. The other end 122 of the protruding portion 12 in the arrangement direction has another parallel portion 122a parallel to the plate surface of the fin 11 and a recess 122b recessed from the other parallel portion 122 a. As shown in fig. 3(b), the convex portion 121b and the concave portion 122b are formed in a semicircular shape.
Among the plurality of protruding portions 12 provided on the plurality of fins 11, the adjacent protruding portions 12 have end portions in the arrangement direction of the fins 11 in contact with each other. That is, one side parallel portion 121a of one projection 12 is in contact with the other side parallel portion 122a of the projection 12 disposed at the front side of the one projection 12. In addition, the other side parallel portion 122a of one projection 12 is in contact with the one side parallel portion 121a of the projection 12 disposed at the rear side of the one projection 12.
Therefore, the interval between one fin 11 and the fins 11 arranged in front of and behind the one fin 11 is determined by the size of the protruding portion 12 provided outside the one fin 11 in the arrangement direction (front-rear direction) of the fins 11. When the plurality of projections 12 are uniform in size, the intervals between the plurality of fins 11 are uniform.
In the heat sink 10 of the present embodiment, the protruding portions 12 are formed by punching as described later, and therefore, the plurality of protruding portions 12 are configured to have uniform sizes and uniform intervals between the plurality of fins 11.
In the heat sink 10, the convex portion 121b and the concave portion 122b are fitted to each other in a state where the parallel portion 121a on one side and the parallel portion 122a on the other side of the adjacent protruding portion 12 are in contact with each other. This makes it difficult for the plurality of fins 11 to be displaced from each other in the longitudinal direction (left-right direction) of the fins 11.
The protruding portion 12 is provided at a substantially central portion in the width direction of the fin 11 in the up-down direction.
The connecting portion 13 has an L-shape, and includes a first connecting portion 131 connected to the fin 11 and a second connecting portion 132 connected to the protruding portion 12. The first connection portion 131 is connected to a substantially central portion of the fin 11 in the width direction. The second connection portion 132 is bent at 90 degrees. Thereby, the surface of the fin 11 and the surface of the protrusion 12 make 90 degrees.
The material of the heat sink 10 may be aluminum, aluminum alloy, or other aluminum material. The material of the heat sink 10 may be a composite material of copper, aluminum, or an aluminum alloy and carbon. Further, the fin 11 may be made of an aluminum-carbon composite material and the protrusion 12 and the connection portion 13 may be made of an aluminum material.
The thickness of the heat sink 10 can be 0.3 to 1.2mm, for example. The size of the entire liquid-cooled cooling device 1, the type of cooling liquid flowing through the casing 20, or the heat conductivity of the fins 11 can be appropriately changed.
The heat sink 10 is fixed in the case 20 by brazing the upper ends of the plurality of fins 11 to the surface (lower surface) of the top portion 21a of the case body 21 opposite to the surface on which the heating element P is mounted, and brazing the lower ends of the plurality of fins 11 to the upper surface of the cover 22. Can illustrate that: in the brazing, the brazing of the upper ends of the plurality of fins 11 to the case body 21, the brazing of the lower ends of the plurality of fins 11 to the cover 22, and the brazing of the case body 21 to the cover 22 are all performed simultaneously.
In the liquid-cooled cooling device 1 configured as described above, the coolant flows into the inflow side space 23 in the casing 20 through the inlet through hole 21d and the interior of the inlet joint 30. Then, the fluid flows in the left direction in the inter-fin flow paths 14 formed by the gaps between the mutually adjacent fins 11 among the plurality of fins 11 in the heat sink 10, and reaches the outflow space 24. The fluid flows leftward through the front flow path 15 formed between the foremost fin 11 of the heat sink 10 and the side portion 21b of the case body 21 and the rear flow path 16 formed by the gap between the rearmost fin 11 of the heat sink 10 and the side portion 21b of the case body 21, and reaches the outflow space 24. The coolant that has reached the outflow space 24 flows through the outlet through hole 21e and the inside of the outlet joint 40, and flows out of the housing 20.
The heat generated by the heating element P is radiated to the coolant flowing through the inter-fin flow paths 14, the front side flow path 15, and the rear side flow path 16 via the insulating member I, the top portion 21a of the case body 21, and the fins 11 of the heat sink 10. Thereby, the heating element P is cooled.
(method of manufacturing radiator 10)
Fig. 4 and 5 are diagrams for explaining a method of manufacturing the heat sink 10.
In the manufacturing method of the present embodiment, the bent pieces 17 are formed temporarily so as to connect the one fin 11, the protruding portion 12 and the connecting portion 13 protruding outward from the one fin 11, the other fin 11 adjacent to the one fin 11, and the protruding portion 12 and the connecting portion 13 protruding outward from the other fin 11. The bent pieces 17 have both ends connected to the adjacent protrusions 12, respectively, and have bent portions 171 bent at the center of the bent pieces 17.
Then, the heat sink 10 including the plurality of fins 11, the protruding portion 12, and the connecting portion 13 is taken out by cutting the bent pieces 17.
More specifically, as shown in fig. 4, first, the periphery of the plurality of fins 11, the protruding portion 12, and the connecting portion 13 is punched out by press working a plate material M made of an aluminum material (first step). At this time, a rectangular shape is punched so that the longitudinal direction of the fin 11 is the width direction of the plate material M and the width direction of the fin 11 is the length direction of the plate material M. Can illustrate that: when the plate thickness of the plate material M is, for example, 0.3 to 1.2mm, the size of the fin 11 in the width direction is 3 to 12 mm. Further, fig. 4 illustrates: in the first step, the peripheries of the 3 fins 11, the protruding portion 12, and the connecting portion 13 are punched out, but the number is not particularly limited to 3.
Further, the plate material M is punched out to have a portion inside the bending piece 17, in other words, a portion between the bending piece 17 and the protruding portion 12 (second step). Further, fig. 4 illustrates: in the second step, the inner side of at least 2 bending pieces 17 provided between the 3 protrusions 12 generated in the first step is punched out. In this way, in the second step, the punching range can be set according to the number of the protruding portions 12 formed in the first step.
The order of the first step and the second step and the timing of the first step and the second step are not particularly limited.
Then, the fins 11 are rotated so that the angle of the surface of the fin 11 formed in the first step is an angle intersecting the plate surface of the plate material M (third step). In the third step, the end portion of the second connection portion 132 of the connection portion 13 on the side of the protruding portion 12 is bent with respect to the protruding portion 12, whereby the fin 11 and the portion of the connection portion 13 on the side of the fin 11 (the first connection portion 131) are rotated at an angle intersecting the plate surface of the plate material M, in other words, the protruding portion 12. At this time, the end portion of the second connection portion 132 of the connection portion 13 on the side of the protruding portion 12 may be bent while pressing the protruding portion 12. This eliminates the need to apply a force to the fins 11, and therefore deformation of the fins 11 can be suppressed. In the present embodiment, it can be exemplified that the fins 11 are rotated by 90 degrees with respect to the plate material M.
The order of the second step and the third step and the timing of the second step and the third step are not particularly limited.
Then, the plate material M is punched out of the portions outside the bending pieces 17 by press working (fourth step). Thereby, the peripheries of the plurality of fins 11, the plurality of protrusions 12, the plurality of connecting portions 13, and the plurality of bent pieces 17 are punched out.
Then, the bent portion 171 of the bent piece 17 is further bent to bring the adjacent protruding portions 12 into contact with each other (fifth step). In the fifth step, the one-side parallel portion 121a of one projection 12 is brought into contact with the other-side parallel portion 122a of the projection 12 disposed on the front side of the one projection 12 (see fig. 3 (b)). The other-side parallel portion 122a of the one projection 12 is brought into contact with the one-side parallel portion 121a of the projection 12 disposed on the rear side of the one projection 12 (see fig. 3 b). At this time, the bent portion 171 is bent so that the convex portion 121b and the concave portion 122b are fitted to each other in a state where the one-side parallel portion 121a and the other-side parallel portion 122a are in contact with each other. In the fifth step, the interval between the adjacent fins 11 is shortened, and the interval is set to a predetermined size (the size between the one-side parallel portion 121a and the other-side parallel portion 122a of the protruding portion 12).
In the fifth step, the bent portions 171 of the bending pieces 17 may be bent by applying a force to the protruding portions 12 in a direction parallel to the surfaces of the protruding portions 12 (a direction orthogonal to the surfaces of the fins 11). This eliminates the need to apply a force to the fins 11, and therefore, deformation of the fins 11 is suppressed.
When the number of fins 11 at the predetermined interval is equal to a predetermined number (hereinafter, sometimes referred to as "predetermined number"), the predetermined number of fins 11, and the protruding portions 12, the connecting portions 13, and the bending pieces 17 protruding from the predetermined number of fins 11 are cut off (sixth step). When the fin is cut, the bent pieces 17 connecting the protruding portions 12 and the connecting portions 13 protruding from the fins 11 of the first predetermined number and the protruding portions 12 and the connecting portions 13 protruding from the fins 11 of the (predetermined number +1) th number are cut. The portion for cutting the bent piece 17 is not particularly limited, but may be, for example, a portion for connecting the bent piece 17 and the protruding portion 12, or a bent portion 171.
Then, the adjacent protruding portions 12 are welded or bonded to each other in a state where the protruding portions 12 are brought into contact with each other to be joined (seventh step). As a method of bonding the protruding portions 12 to each other, application of an adhesive to the protruding portions 12 can be exemplified. As a method of welding the protruding portions 12 to each other, laser welding or ultrasonic welding may be performed on the protruding portions 12.
After the projections 12 are joined to each other in the seventh step, the bending pieces 17 are cut (eighth step). This eighth step can exemplify: the connection portion between the bending piece 17 and the protruding portion 12 is broken by bending the distal end portion of the bending piece 17 upward or downward with respect to the protruding portion 12 (urging in the width direction of the fin 11) while pressing the protruding portion 12.
Fig. 6 is a perspective view showing a state where the protrusions 12 are welded to each other by laser welding.
As shown in fig. 6, among the portions where the adjacent protruding portions 12 are brought into contact with each other, the laser L is irradiated from the laser head 151 of the laser device 150 toward the portion where the convex portion 121b and the concave portion 122b are fitted. Then, the laser head 151 is moved in the arrangement direction of the plurality of fins 11 (the arrangement direction of the plurality of projections 12), in other words, in the direction orthogonal to the surface of the fins 11, to continuously irradiate the laser light L.
The laser source of the laser device 150 is not particularly limited. Can exemplify YAG laser and CO2Laser, fiber laser, disc laser, semiconductor laser. The irradiation direction of the laser light L may be a direction perpendicular to the surface of the protruding portion 12 or may be a direction inclined with respect to the perpendicular direction.
According to the heat sink 10 manufactured by the manufacturing method described above, the intervals between the plurality of fins 11 can be made uniform. That is, the gap between the adjacent fins 11 is determined by the size between the one-side parallel portion 121a and the other-side parallel portion 122a of the protruding portion 12 protruding to the outside of one fin 11, and the shape of the protruding portion 12 is formed by punching by press working. Further, the dimension in the case of forming by punching by press working is more likely to be a desired size (dimension of design drawing) than the dimension in the case of forming by plastic deformation by bending, for example. Therefore, according to the heat sink 10 manufactured by the manufacturing method described above, the intervals between the plurality of fins 11 can be made uniform.
In addition, according to the above-described manufacturing method, the bent portions 171 of the bent pieces 17 are bent to bring the adjacent protruding portions 12 into contact with each other, thereby determining the interval between the fins 11. That is, the interval between the fins 11 is determined by applying a force in a direction parallel to the surface of the protruding portion 12 to abut on the adjacent protruding portion 12. Therefore, the intervals between the fins 11 can be easily determined.
In addition, in the seventh step of welding or bonding the protruding portions 12 to each other, since the protruding portions 12 are urged in the direction parallel to the surfaces of the protruding portions 12, the plurality of fins 11 can be maintained (restrained) in a state of being arranged at predetermined intervals, and therefore, the joining can be performed at the predetermined intervals with high accuracy.
Further, by forming the protrusion portions 121b and the recess portions 122b of the adjacent protrusion portions 12 so as to be fitted to each other, even if the protrusion portions 12 are urged to be pressed in a direction parallel to the surfaces of the protrusion portions 12 in order to bring the protrusion portions 12 into contact with each other, the fins 11 can be prevented from being displaced in the longitudinal direction. Therefore, the plurality of fins 11 are easily aligned straight.
Fig. 7 is an enlarged view of the bending piece 17.
A notch 172 may be formed in the bent portion 171 of the bent piece 17 to be recessed from the inner surface. This makes it easy to bend the bent portion 171 and bring the adjacent protruding portions 12 into contact with each other. Further, notches 173 recessed from the inner surface may be formed at the connecting portions with the protruding portions 12 at both end portions of the bent pieces 17. This facilitates cutting of the bent pieces 17 from the protruding portion 12.
(action/Effect of radiator 10)
According to the heat sink 10 manufactured by the above manufacturing method, the interval between the plurality of fins 11 is highly likely to be uniform. That is, according to the shape of the heat sink 10, the intervals between the fins 11 are determined by bringing the protruding portions 12 formed by punching by press working into contact with each other, so the intervals between the plurality of fins 11 are easily made uniform. As a result, according to the heat sink 10, heat generated from the heat generating body P is uniformly radiated, and the heat generating body P is uniformly cooled.
In the heat sink 10, although the protrusion 12 obstructs the flow of the coolant from the inflow-side space 23 to the outflow-side space 24 through the inter-fin flow paths 14, the front-side flow paths 15, and the rear-side flow paths 16, the size of the fin 11 in the width direction of the protrusion 12 is the same as the thickness (for example, 0.3 to 1.2mm) of the plate material M, and is much smaller (for example, approximately 10%) than the size of the fin 11 in the width direction, and thus is difficult to obstruct.
(modification of the method for manufacturing the radiator 10)
In the manufacturing method described with reference to fig. 4 and 5, the bent pieces 17 are formed temporarily, the protruding portions 12 and the connecting portions 13 protruding outward from the one fin 11 and the protruding portions 12 and the connecting portions 13 protruding outward from the other fins 11 adjacent to the one fin 11 are connected to each other, and the bent pieces 17 are cut after the adjacent protruding portions 12 are joined to each other. However, the method of manufacturing the heat sink 10 is not limited to this embodiment. For example, the plate material M is subjected to press working to punch out the peripheries of the fins 11, the protruding portions 12, and the connecting portions 13, and the fins 11 are rotated so that the surface of the fins 11 are at an angle (for example, 90 degrees) intersecting the surface of the protruding portions 12, thereby forming a single fin member (not shown) including 1 fin 11, the protruding portions 12, and the connecting portions 13. Then, after a plurality of single fin members are combined so that the adjacent protruding portions 12 contact each other, the protruding portions 12 may be welded or bonded to each other to be joined.
Even in the heat sink 10 manufactured in this way, the projecting portions 12 formed by punching in the press working are brought into contact with each other to determine the intervals between the fins 11, so that the intervals between the plurality of fins 11 are easily made uniform. As a result, according to the heat sink 10, heat generated from the heat generating body P is uniformly radiated, and the heat generating body P is uniformly cooled.
(modification of the protruding portion 12)
Fig. 8 is a view showing a modification of the protruding portion 12.
The projecting portion 12 has a projecting portion 121b at one end 121 and a recessed portion 122b at the other end 122, but may not have the projecting portion 121b and the recessed portion 122b as shown in fig. 8. Even with this configuration, since the protruding portions 12 formed by punching in the press working are brought into contact with each other to determine the intervals between the fins 11, the intervals between the plurality of fins 11 are easily made uniform.
< second embodiment >
Fig. 9 is a schematic configuration diagram of a heat sink 200 according to a second embodiment.
The heat sink 200 of the second embodiment differs from the heat sink 10 of the first embodiment in the protrusion 212 corresponding to the protrusion 12. Hereinafter, a point different from the heat sink 10 will be described. The same reference numerals are given to the components having the same functions in the second embodiment and the first embodiment, and detailed descriptions thereof are omitted.
The heat sink 200 of the second embodiment includes a plurality of fins 211, a plurality of protrusions 212 provided on the outer sides of the plurality of fins 211, and a connecting portion 213 connecting the fins 211 and the protrusions 212.
The position of the protrusion 212 with respect to the fin 211 is different from that of the protrusion 12 of the heat sink 10 of the first embodiment. The protruding portion 212 is provided at the lowermost end portion in the width direction of the fin 211. The lower surface of the protrusion 212 and the lower end surface of the fin 211 are set to have the same height.
The connection portion 213 has an L-shape, and includes a first connection portion 231 connected to the fin 211 and a second connection portion 232 connected to the protrusion 212. The first connection portion 231 is connected to an end portion of the fin 211 in the longitudinal direction, and is bent by 90 degrees. The second connection portion 232 is disposed on the same plane as the protrusion portion 212.
Further, since the connection portion 213 is connected to the end portion of the fin 211 in the longitudinal direction and bent at 90 degrees, a notch 211a is formed around the portion of the fin 211 to which the connection portion 213 is connected. Thereby, the side of the connection part 213 connected to the fin 211 is easily bent with respect to the protrusion 212, and thus is easily formed such that the surface of the fin 211 is 90 degrees to the surface of the protrusion 212.
In the heat sink 200 configured as described above, the intervals between the fins 211 are determined by bringing the protruding portions 212 formed by press blanking into contact with each other, and therefore, the intervals between the plurality of fins 211 are easily made uniform. As a result, according to the heat sink 200, heat generated from the heat generating body P is uniformly radiated, and the heat generating body P is uniformly cooled.
In the heat sink 200, the protrusion 212 is provided at the lowermost end portion in the width direction of the fin 211, and therefore, the flow of the coolant from the inlet-side space 23 to the outlet-side space 24 is less likely to be obstructed.
The heat sink 200 is fixed in the case 20 by brazing the upper ends of the plurality of fins 211 to the top 21a of the case body 21 and brazing the lower ends of the plurality of fins 211 to the upper surface of the cover 22, as in the heat sink 10 of the first embodiment. As described above, the timing of brazing the plurality of fins 211 to the case body 21, brazing the plurality of fins 211 to the cover 22, and brazing the case body 21 to the cover 22 is not particularly limited.
Fig. 10 is a diagram showing a state in which the radiator 200 and the cover 22 are joined.
In the heat sink 200, the protrusion 212 is provided at the lowermost end portion in the width direction of the fin 211, and the lower surface of the protrusion 212 and the lower end surface of the fin 211 are at the same height. Therefore, when brazing the plurality of fins 211 to the cover 22, the lower surface of the protruding portion 212 and the cover 22 are welded. Therefore, according to the heat sink 200, the positions of the heat sink 200 and the cover 22 are determined with high accuracy by welding or bonding the heat sink 200 and the cover 22.
Further, the method of joining the heat sink 200 and the cover 22 is not limited to brazing. For example, welding other than pressure welding, adhesion, and soldering may be used.
< third embodiment >
Fig. 11 is a schematic configuration diagram of a heat sink 300 according to a third embodiment.
The heat sink 300 of the third embodiment includes a plurality of fins 311, a plurality of protrusions 312 provided on the outer sides of the plurality of fins 311, and a connection portion 313 connecting the fins 311 and the protrusions 312.
The connection portion 313 is provided at the lowermost end portion in the width direction of the fin 211 so that the lower surface of the protrusion 312 and the lower end surface of the fin 311 are at the same height, as in the protrusion 212 of the heat sink 200 of the second embodiment. Similarly to the connection portion 13 of the heat sink 10 according to the first embodiment, the connection portion 313 is L-shaped and includes a first connection portion 331 connected to a portion of the fin 311 in the width direction and a second connection portion 332 connected to the protrusion 312. The second connection portion 332 is bent at 90 degrees. Thereby, the surface of the fin 311 and the surface of the projection 312 become 90 degrees.
In the heat sink 300 configured as described above, the intervals between the fins 311 are determined by bringing the protruding portions 312 formed by press blanking into contact with each other, and therefore, the intervals between the plurality of fins 311 are easily made uniform. As a result, according to the heat sink 300, heat generated from the heat generating bodies P is uniformly radiated, and the heat generating bodies P are uniformly cooled.
In the heat sink 300, the protrusion 312 is provided at the lowermost end portion in the width direction of the fin 311, and therefore, the flow of the coolant from the inlet-side space 23 to the outlet-side space 24 is less likely to be obstructed.
Further, by welding or bonding the heat sink 300 and the cover 22, the positions of the heat sink 300 and the cover 22 are determined with high accuracy.
< fourth embodiment >
In the heat sink 10 of the first embodiment, the heat sink 200 of the second embodiment, and the heat sink 300 of the third embodiment, the semicircular convex portion 121b is formed at one end portion 121, and the semicircular concave portion 122b is formed at the other end portion 122. Further, the projections 121b and the recesses 122b are fitted to each other, thereby suppressing the fins 11, 211, 311 from shifting in the longitudinal direction. However, the shape of the convex portion 121b and the concave portion 122b is not limited to a semicircular shape.
Fig. 12 is a schematic configuration diagram of a heat sink 400 according to a fourth embodiment.
The heat sink 400 of the fourth embodiment differs from the heat sink 200 of the second embodiment in the protrusion 412 corresponding to the protrusion 212. Hereinafter, a point different from the heat sink 200 will be described.
The heat sink 400 of the fourth embodiment has a plurality of fins 411, a plurality of protrusions 412 provided on the outer sides of the plurality of fins 411, and a connecting portion 413 connecting the fins 411 and the protrusions 412. The fins 411 and the connection portions 413 are the same as the fins 211 and the connection portions 213 of the second embodiment, and therefore, detailed description thereof is omitted.
One end 421 in the arrangement direction of the protruding portion 412 has a one-side parallel portion 421a parallel to the plate surface of the fin 411 and a protruding portion 421b protruding from the one-side parallel portion 421 a. The other end 422 in the arrangement direction of the protruding portions 412 has another side parallel portion 422a parallel to the plate surface of the fin 411 and a recessed portion 422b recessed from the other side parallel portion 422 a. The convex portion 421b projects in an arc shape of 1/4, and the concave portion 422b is recessed in an arc shape of 1/4.
In the protruding portion 412 configured as described above, similarly, the one-side parallel portion 421a of the one protruding portion 412 is in contact with the other-side parallel portion 422a of the protruding portion 412 disposed on the front side of the one protruding portion 412. In addition, the other side parallel portion 422a of the one protruding portion 412 contacts the one side parallel portion 421a of the protruding portion 412 disposed at the rear side of the one protruding portion 412. When the plurality of protrusions 412 are uniform in size, the intervals between the plurality of fins 211 are uniform.
In the heat sink 400, the convex portion 421b and the concave portion 422b are fitted to each other in a state where the parallel portion 421a on one side and the parallel portion 422a on the other side of the adjacent protruding portion 412 are in contact with each other. In this structure, the left-side projecting portion 12l and the right-side projecting portion 12r projecting outward from both ends of the fin 211 in the longitudinal direction are bilaterally symmetrical. Therefore, the concave portions 422b of the protruding portions 412 protruding from the left and right end portions of the one fin 411 are pressed inward from the convex portions 421b of the protruding portions 412 protruding from the left and right end portions of the fin 411 disposed behind the one fin 11. As a result, the plurality of fins 411 are less likely to be displaced from each other in the longitudinal direction (left-right direction) of the fins 411.
The heat sink 400 having such a structure can be manufactured by the manufacturing method described with reference to fig. 4 and 5. After a single fin member (not shown) including 1 fin 411, the protruding portion 412, and the connecting portion 413 is formed, a plurality of single fin members may be combined such that the adjacent protruding portions 412 are brought into contact with each other and the protruding portion 421b and the recessed portion 422b are fitted to each other, and then the protruding portions 412 may be welded or bonded to each other to be joined.
Further, the connection 413 of the heat sink 400 may be configured similarly to the connection 13 of the first embodiment and the connection 313 of the third embodiment. In addition, the protruding portion 412 may be provided at a substantially central portion in the width direction of the fin 411, as in the protruding portion 12 of the first embodiment.
< fifth embodiment >
Fig. 13 is a schematic configuration diagram of a heat sink 500 according to a fifth embodiment.
The heat sink 500 of the fifth embodiment differs from the heat sink 200 of the second embodiment in the fins 511 corresponding to the fins 211. Hereinafter, a point different from the heat sink 200 will be described. The members having the same functions in the fifth embodiment and the second embodiment are given the same reference numerals and detailed descriptions thereof are omitted.
The fins 211 of the second embodiment are linear in the longitudinal direction, while the fins 511 of the fifth embodiment are wave-shaped in which crests and troughs are continuously formed in the longitudinal direction when viewed in the vertical direction (the same applies to the fins 211 when viewed in the front-rear direction). In this way, the fins 511 have a wave shape, and thus the surface area is increased as compared with the case of being linear, and therefore the heating element P can be further cooled.
In the manufacturing method described with reference to fig. 4 and 5, the step of forming the fins 511 into the wave shape is provided after the first step or after the second step, whereby the wave shape can be formed with high accuracy.
The fins 11, 311, and 411 of the first, third, and fourth embodiments may be formed in a wave shape in the same manner as the fins 511.
< sixth embodiment >
Fig. 14 is a schematic configuration diagram of a heat sink 600 according to a sixth embodiment.
The heat sink 600 of the sixth embodiment differs from the heat sink 200 of the second embodiment in the fin 611 corresponding to the fin 211. Hereinafter, a point different from the heat sink 200 will be described. The members having the same functions in the sixth embodiment and the second embodiment are given the same reference numerals and detailed descriptions thereof are omitted.
The fin 611 of the sixth embodiment includes a rod-shaped base portion 611a extending in the left-right direction and a plurality of columnar portions 611b projecting upward from the base portion 611 a. The plurality of columnar portions 611b are arranged at predetermined intervals in the left-right direction. The columnar portion 611b has a rhombic shape when viewed in the vertical direction, and the length of the short diagonal line of the rhombic shape is larger than the thickness of the base portion 611a and thus the plate thickness of the plate material M. In addition, short diagonal lines in the columnar portions 611b of mutually adjacent fins 611 among the plurality of fins 611 are offset from each other in the left-right direction. For example, the columnar portion 611b of another fin 611 adjacent to the one fin 611 is disposed between the adjacent columnar portion 611b and the columnar portion 611b of the one fin 611. The length of the rhombus short diagonal line of the columnar portion 611b may be the same as the plate thickness of the plate material M.
In this way, since the fin 611 has the plurality of rhombic columnar parts 611b, the coolant flowing between the fins 611 comes into contact with the columnar parts 611b everywhere, and thus the heat generating element P can be further cooled.
In the manufacturing method described with reference to fig. 4 and 5, the step of forming the plurality of columnar portions 611b in the fin 611 is provided after the first step or after the second step, whereby the columnar portions 611b can be formed with high accuracy.
Further, the fin 11 of the first embodiment, the fin 311 of the third embodiment, and the fin 411 of the fourth embodiment may have a plurality of columnar portions 611b, similarly to the fin 611.
Claims (9)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-221422 | 2018-11-27 | ||
| JP2018221422A JP7178246B2 (en) | 2018-11-27 | 2018-11-27 | radiator, cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111223825A true CN111223825A (en) | 2020-06-02 |
| CN111223825B CN111223825B (en) | 2025-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911170449.1A Active CN111223825B (en) | 2018-11-27 | 2019-11-26 | Radiator, cooling device |
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| Country | Link |
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| JP (1) | JP7178246B2 (en) |
| CN (1) | CN111223825B (en) |
| DE (1) | DE202019005337U1 (en) |
| TW (1) | TWI818106B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP7537199B2 (en) | 2020-09-15 | 2024-08-21 | 株式会社レゾナック | Heat sinks, cooling devices |
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| JPH10163388A (en) * | 1996-11-28 | 1998-06-19 | Hokusa:Kk | Heat sink and its manufacture |
| EP1328019A1 (en) * | 2002-01-10 | 2003-07-16 | Wen-Chen Wei | Leaf piece structure for heat dissipater |
| JP2011071386A (en) * | 2009-09-28 | 2011-04-07 | Furukawa Electric Co Ltd:The | Cooling apparatus |
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| US20130000872A1 (en) * | 2011-06-29 | 2013-01-03 | Chun-Hung Lin | Fin Heat Sink with Improved Structure and Processing Method Thereof |
| JP2018006580A (en) * | 2016-07-01 | 2018-01-11 | 有限会社和氣製作所 | Fin member, temperature regulation device and manufacturing method thereof |
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| TW487298U (en) * | 2000-12-19 | 2002-05-11 | Global Win Technology Co Ltd | Non-uniform heat dissipation fins |
| JP3799477B2 (en) * | 2003-12-12 | 2006-07-19 | ソニー株式会社 | Radiation fin, cooling device, electronic device, and manufacturing method of cooling device |
| CN101528018A (en) * | 2008-03-07 | 2009-09-09 | 富准精密工业(深圳)有限公司 | Heat radiating device and manufacturing method thereof |
| CN201199769Y (en) * | 2008-04-22 | 2009-02-25 | 鸿富锦精密工业（深圳）有限公司 | Heat radiator |
| CN102917566A (en) * | 2011-08-01 | 2013-02-06 | 富瑞精密组件（昆山）有限公司 | Radiator |
| WO2016048298A1 (en) * | 2014-09-24 | 2016-03-31 | Hewlett Packard Enterprise Development Lp | Heat sink with a load spreading bar |
| US20160227668A1 (en) * | 2015-01-31 | 2016-08-04 | Aic Inc. | Cooling module and heat sink |
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2018
- 2018-11-27 JP JP2018221422A patent/JP7178246B2/en active Active
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2019
- 2019-10-24 TW TW108138424A patent/TWI818106B/en active
- 2019-11-25 DE DE202019005337.9U patent/DE202019005337U1/en active Active
- 2019-11-26 CN CN201911170449.1A patent/CN111223825B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10163388A (en) * | 1996-11-28 | 1998-06-19 | Hokusa:Kk | Heat sink and its manufacture |
| EP1328019A1 (en) * | 2002-01-10 | 2003-07-16 | Wen-Chen Wei | Leaf piece structure for heat dissipater |
| JP2011071386A (en) * | 2009-09-28 | 2011-04-07 | Furukawa Electric Co Ltd:The | Cooling apparatus |
| CN202103993U (en) * | 2011-03-17 | 2012-01-04 | 广达电脑股份有限公司 | Heat dissipation fin assembly and heat dissipation assembly thereof |
| US20130000872A1 (en) * | 2011-06-29 | 2013-01-03 | Chun-Hung Lin | Fin Heat Sink with Improved Structure and Processing Method Thereof |
| JP2018006580A (en) * | 2016-07-01 | 2018-01-11 | 有限会社和氣製作所 | Fin member, temperature regulation device and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111223825B (en) | 2025-01-07 |
| JP2020088198A (en) | 2020-06-04 |
| DE202019005337U1 (en) | 2020-07-31 |
| JP7178246B2 (en) | 2022-11-25 |
| TW202021072A (en) | 2020-06-01 |
| TWI818106B (en) | 2023-10-11 |
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