US20120145374A1 - Heat sink - Google Patents
Heat sink Download PDFInfo
- Publication number
- US20120145374A1 US20120145374A1 US12/979,316 US97931610A US2012145374A1 US 20120145374 A1 US20120145374 A1 US 20120145374A1 US 97931610 A US97931610 A US 97931610A US 2012145374 A1 US2012145374 A1 US 2012145374A1
- Authority
- US
- United States
- Prior art keywords
- base plate
- heat sink
- fins
- protruding member
- main body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000000034 method Methods 0.000 description 4
- 238000005476 soldering Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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 subgroups H01L21/06 - H01L21/326
- 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
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the disclosure generally relates to device cooling, and more particularly to a heat sink including a base plate and a fin unit interferingly fitted together.
- Heat sinks are used to remove heat from heat-generating electronic components such as central processing units (CPUs) and others. Thereby, heat sinks keep electronic components within safe operating limits, and enable the electronic components to operate stably.
- a typical heat sink comprises a base contacting an electronic component and absorbing heat therefrom, and a plurality of parallel planar fins attached to the base by soldering. The fins dissipate the heat to the ambient environment.
- soldering flux needs to be added between the fins and the base when the fins are assembled to the base.
- a prior process of nickel-plating may be required before the fins and the base are soldered together. Such process materials and manufacturing procedures make the assembly of the fins and the base somewhat costly and complicated.
- Another common kind of heat sink is the one-piece heat sink made of forged aluminum.
- the one-piece heat sink typically does not attain a very high heat dissipating effect.
- a short pitch between adjacent heat dissipating fins is desired, because a higher fin density provides a higher overall heat dissipating surface.
- the desired level of fin density normally cannot be achieved economically.
- FIG. 1 is an isometric, assembled view of a heat sink according to a first exemplary embodiment of the present disclosure.
- FIG. 2 is an isometric, exploded view of the heat sink of FIG. 1 .
- FIG. 3 is an isometric, exploded view of the heat sink of FIG. 1 , shown from a different aspect.
- FIG. 4 is an isometric, assembled view of a heat sink according to a second exemplary embodiment of the present disclosure.
- FIG. 5 is an isometric, exploded view of the heat sink of FIG. 4 .
- FIG. 6 is an isometric, exploded view of the heat sink of FIG. 3 , shown from a different aspect.
- a heat sink 10 according to a first exemplary embodiment of the present disclosure includes a base plate 12 and a fin unit 14 arranged on the base plate 12 .
- the base plate 12 is rectangular, and includes a planar bottom surface 120 and a top surface 122 .
- the bottom surface 120 is configured to contact a heat-generating component to absorb heat generated therefrom.
- a swallowtail-shaped protruding member 124 extends upwardly from a middle portion of the top surface 122 .
- the protruding member 124 is made by an extrusion process, and has a substantially trapezoidal cross section.
- the protruding member 124 includes a rectangular top face 125 spaced from and parallel to the top surface 122 of the base plate 12 , and two lateral faces 127 obliquely depending from two long sides of the top face 125 to connect the top surface 122 of the base plate 12 .
- An arced chamfer 128 is formed between each of the lateral faces 127 and a corresponding long side of the top face 125 .
- the protruding member 124 has a length equal to the base plate 12 , and a width increasing gradually from the top surface 122 of the base plate 12 to the top face 125 .
- the fin unit 14 includes a plurality of fins 141 arranged on the top surface 122 of the base plate 12 .
- Each of the fins 141 is a substantially rectangular thin metallic plate.
- the fins 141 are parallel to each other.
- Each of the fins 141 includes a substantially rectangular main body 140 , and a flange 142 extending from an upper edge of the main body 140 .
- a cutout 144 corresponding to the protruding member 124 is defined in a middle of a lower end of the main body 140 . Referring also to FIG. 3 , the cutout 144 is formed by extrusion tapping, such that a hem 145 extending along a periphery of the cutout 144 is accordingly formed.
- a main central portion of the hem 145 is parallel to the flange 142 , and a length of the main central portion of the hem 145 is less than, but similar to, a length of the flange 142 .
- the cutout 144 has a shape which is the same as the shape of the cross section of the protruding member 124 .
- a size of the cutout 144 is substantially the same as a size of the cross section of the protruding member 124 .
- the fins 141 are individually installed onto the base plate 12 .
- Each fin 141 is firstly placed at one side of the base plate 12 , with the cutout 144 aligned with the protruding member 124 .
- the fin 141 is horizontally mounted onto the base plate 12 with the protruding member 124 being received in the cutout 144 .
- the protruding member 124 interferingly fits in the cutout 144 .
- the hem 145 abuts the top face 125 and lateral faces 127 of the protruding member 124 , to provide a large contact interface between the fin 141 and the base plate 12 .
- Each of the fins 141 is horizontally moveable along the protruding member 124 , such that positions of the fins 141 on the base plate 12 can be adjusted as needed during assembly.
- the flanges 142 of each two neighboring fins 141 contact each other, to cooperatively form a planar top surface 146 at an upper side of the fin unit 14 .
- the hems 145 of the each two neighboring fins 141 contact each other to cooperatively define a groove 147 at a lower end of the fin unit 14 .
- the groove 147 matches the protruding member 124 .
- soldering flux and nickel plating are not required during assembly of the fins 141 and the base plate 12 . This greatly reduces a manufacturing cost of the heat sink 10 , and allows assembly of the fins 141 and the base plate 12 to be simple and convenient.
- FIGS. 4 and 5 show a heat sink 10 a according to a second exemplary embodiment of the present disclosure.
- the heat sink 10 a differs from the heat sink 10 of the first embodiment only in that a protruding member 124 a is formed at a lower end of a fin unit 14 a, and a groove 144 a is defined at a top surface 122 a of a base plate 12 a.
- the groove 144 a has the same shape as that of the protruding member 144 of the first embodiment.
- the fin unit 14 a includes a plurality of fins 141 a arranged on the top surface 122 a of the base plate 12 a. Referring also to FIG.
- each of the fins 141 a includes a protrusion 126 a depending from a lower edge of the main body 140 , and a hem 127 a extending along a periphery of the protrusion 126 a and being oriented perpendicular to the main body 140 .
- the protrusion 126 a has the same shape as that of the cutout 144 of the first embodiment.
- the protrusion 126 a has the same shape as a cross section defined by the groove 144 a of the base plate 12 a, and has substantially the same size as the cross section of the groove 144 a.
- a main central portion of the hem 127 a is parallel to a flange 142 of the fin 141 a, and a length of the main central portion of the hem 127 a is less than, but similar to, a length of the flange 142 .
- the fins 141 a are individually assembled onto the base plate 12 a one by one.
- Each fin 141 a is firstly placed at one side of the base plate 12 a with the protrusion 126 a aligned with the groove 144 a.
- the fin 141 a is horizontally mounted onto the base plate 12 a, with the protrusion 126 a being received in the groove 144 a.
- the protrusion 126 a interferingly fits in the groove 144 a.
- the hem 127 a abuts an inner surface of the base plate 12 a in the groove 144 a.
- the hems 127 a of each two neighboring fins 141 a contact each other to cooperatively form an outer surface of the protruding member 124 a.
- the protrusions 126 a cooperatively form the protruding member 124 a at the lower end of the fin unit 14 a.
- the protruding member 124 a matches the groove 144 a of the base plate 12 a.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
Description
- 1. Technical Field
- The disclosure generally relates to device cooling, and more particularly to a heat sink including a base plate and a fin unit interferingly fitted together.
- 2. Description of Related Art
- Heat sinks are used to remove heat from heat-generating electronic components such as central processing units (CPUs) and others. Thereby, heat sinks keep electronic components within safe operating limits, and enable the electronic components to operate stably. A typical heat sink comprises a base contacting an electronic component and absorbing heat therefrom, and a plurality of parallel planar fins attached to the base by soldering. The fins dissipate the heat to the ambient environment.
- When the above-described heat sink is manufactured, soldering flux needs to be added between the fins and the base when the fins are assembled to the base. Furthermore, when the fins and the base are made of different materials, a prior process of nickel-plating may be required before the fins and the base are soldered together. Such process materials and manufacturing procedures make the assembly of the fins and the base somewhat costly and complicated.
- Another common kind of heat sink is the one-piece heat sink made of forged aluminum. However, the one-piece heat sink typically does not attain a very high heat dissipating effect. In particular, a short pitch between adjacent heat dissipating fins is desired, because a higher fin density provides a higher overall heat dissipating surface. However, due to technical difficulties inherent in the forging process, the desired level of fin density normally cannot be achieved economically.
- What is desired, therefore, is a heat sink which can overcome the above described shortcomings
-
FIG. 1 is an isometric, assembled view of a heat sink according to a first exemplary embodiment of the present disclosure. -
FIG. 2 is an isometric, exploded view of the heat sink ofFIG. 1 . -
FIG. 3 is an isometric, exploded view of the heat sink ofFIG. 1 , shown from a different aspect. -
FIG. 4 is an isometric, assembled view of a heat sink according to a second exemplary embodiment of the present disclosure. -
FIG. 5 is an isometric, exploded view of the heat sink ofFIG. 4 . -
FIG. 6 is an isometric, exploded view of the heat sink ofFIG. 3 , shown from a different aspect. - Reference will now be made to the figures to describe the present heat sink in detail.
- Referring to
FIG. 1 , aheat sink 10 according to a first exemplary embodiment of the present disclosure includes abase plate 12 and afin unit 14 arranged on thebase plate 12. - Referring also to
FIG. 2 , thebase plate 12 is rectangular, and includes aplanar bottom surface 120 and atop surface 122. Thebottom surface 120 is configured to contact a heat-generating component to absorb heat generated therefrom. A swallowtail-shaped protruding member 124 extends upwardly from a middle portion of thetop surface 122. The protrudingmember 124 is made by an extrusion process, and has a substantially trapezoidal cross section. Theprotruding member 124 includes a rectangulartop face 125 spaced from and parallel to thetop surface 122 of thebase plate 12, and twolateral faces 127 obliquely depending from two long sides of thetop face 125 to connect thetop surface 122 of thebase plate 12. Anarced chamfer 128 is formed between each of thelateral faces 127 and a corresponding long side of thetop face 125. The protrudingmember 124 has a length equal to thebase plate 12, and a width increasing gradually from thetop surface 122 of thebase plate 12 to thetop face 125. - The
fin unit 14 includes a plurality offins 141 arranged on thetop surface 122 of thebase plate 12. Each of thefins 141 is a substantially rectangular thin metallic plate. Thefins 141 are parallel to each other. Each of thefins 141 includes a substantially rectangularmain body 140, and aflange 142 extending from an upper edge of themain body 140. Acutout 144 corresponding to the protrudingmember 124 is defined in a middle of a lower end of themain body 140. Referring also toFIG. 3 , thecutout 144 is formed by extrusion tapping, such that ahem 145 extending along a periphery of thecutout 144 is accordingly formed. A main central portion of thehem 145 is parallel to theflange 142, and a length of the main central portion of thehem 145 is less than, but similar to, a length of theflange 142. Thecutout 144 has a shape which is the same as the shape of the cross section of the protrudingmember 124. A size of thecutout 144 is substantially the same as a size of the cross section of the protrudingmember 124. - When the
heat sink 10 is assembled, thefins 141 are individually installed onto thebase plate 12. Eachfin 141 is firstly placed at one side of thebase plate 12, with thecutout 144 aligned with theprotruding member 124. Then thefin 141 is horizontally mounted onto thebase plate 12 with theprotruding member 124 being received in thecutout 144. The protrudingmember 124 interferingly fits in thecutout 144. Thehem 145 abuts thetop face 125 andlateral faces 127 of the protrudingmember 124, to provide a large contact interface between thefin 141 and thebase plate 12. Each of thefins 141 is horizontally moveable along theprotruding member 124, such that positions of thefins 141 on thebase plate 12 can be adjusted as needed during assembly. After all of thefins 141 are assembled onto thebase plate 12, theflanges 142 of each two neighboringfins 141 contact each other, to cooperatively form a planartop surface 146 at an upper side of thefin unit 14. Thehems 145 of the each two neighboringfins 141 contact each other to cooperatively define agroove 147 at a lower end of thefin unit 14. Thegroove 147 matches theprotruding member 124. - In the present heat sink, soldering flux and nickel plating are not required during assembly of the
fins 141 and thebase plate 12. This greatly reduces a manufacturing cost of theheat sink 10, and allows assembly of thefins 141 and thebase plate 12 to be simple and convenient. -
FIGS. 4 and 5 show aheat sink 10 a according to a second exemplary embodiment of the present disclosure. The heat sink 10 a differs from theheat sink 10 of the first embodiment only in that aprotruding member 124 a is formed at a lower end of afin unit 14 a, and agroove 144 a is defined at atop surface 122 a of abase plate 12 a. Thegroove 144 a has the same shape as that of theprotruding member 144 of the first embodiment. Thefin unit 14 a includes a plurality offins 141 a arranged on thetop surface 122 a of thebase plate 12 a. Referring also toFIG. 6 , each of thefins 141 a includes aprotrusion 126 a depending from a lower edge of themain body 140, and ahem 127 a extending along a periphery of theprotrusion 126 a and being oriented perpendicular to themain body 140. Theprotrusion 126 a has the same shape as that of thecutout 144 of the first embodiment. Theprotrusion 126 a has the same shape as a cross section defined by thegroove 144 a of thebase plate 12 a, and has substantially the same size as the cross section of thegroove 144 a. A main central portion of thehem 127 a is parallel to aflange 142 of thefin 141 a, and a length of the main central portion of thehem 127 a is less than, but similar to, a length of theflange 142. - When the
heat sink 10 a is assembled, thefins 141 a are individually assembled onto thebase plate 12 a one by one. Eachfin 141 a is firstly placed at one side of thebase plate 12 a with theprotrusion 126 a aligned with thegroove 144 a. Then thefin 141 a is horizontally mounted onto thebase plate 12 a, with theprotrusion 126 a being received in thegroove 144 a. Theprotrusion 126 a interferingly fits in thegroove 144 a. Thehem 127 a abuts an inner surface of thebase plate 12 a in thegroove 144 a. After all of thefins 141 a are assembled onto thebase plate 12 a, thehems 127 a of each two neighboringfins 141 a contact each other to cooperatively form an outer surface of the protrudingmember 124 a. Theprotrusions 126 a cooperatively form the protrudingmember 124 a at the lower end of thefin unit 14 a. The protrudingmember 124 a matches thegroove 144 a of thebase plate 12 a. - It is to be understood, however, that even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (20)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201010583423.2 | 2010-12-10 | ||
CN201010583423.2A CN102543912B (en) | 2010-12-10 | 2010-12-10 | Radiator and its preparation method |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120145374A1 true US20120145374A1 (en) | 2012-06-14 |
Family
ID=46198137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/979,316 Abandoned US20120145374A1 (en) | 2010-12-10 | 2010-12-27 | Heat sink |
Country Status (2)
Country | Link |
---|---|
US (1) | US20120145374A1 (en) |
CN (1) | CN102543912B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130255929A1 (en) * | 2012-04-03 | 2013-10-03 | Foxconn Technology Co., Ltd. | Heat dissipation device |
US11262140B2 (en) * | 2018-09-30 | 2022-03-01 | Tyco Electronics (Shanghai) Co. Ltd. | Heat sink and housing assembly |
US11988468B2 (en) * | 2018-09-30 | 2024-05-21 | Tyco Electronics (Shanghai) Co., Ltd. | Heat sink and housing assembly |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104661488B (en) * | 2013-11-21 | 2018-03-09 | 奇鋐科技股份有限公司 | The manufacture method of radiating module |
CN105283033A (en) * | 2014-07-21 | 2016-01-27 | 奇鋐科技股份有限公司 | Manufacture method of heat-dissipating module |
CN105720022B (en) * | 2014-12-04 | 2019-06-14 | 国家电网公司 | A kind of extra-high voltage direct-current thyristor pushes back the radiator on road |
WO2020087410A1 (en) * | 2018-10-31 | 2020-05-07 | 北京比特大陆科技有限公司 | Circuit board and supercomputing device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070169918A1 (en) * | 2006-01-20 | 2007-07-26 | Hua-Shou Kuo | Combination cooler module |
US20090084529A1 (en) * | 2007-09-30 | 2009-04-02 | Tsung-Hsien Huang | Cooler module |
US20090242168A1 (en) * | 2008-03-27 | 2009-10-01 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat sink assembly and method for manufacturing the same |
-
2010
- 2010-12-10 CN CN201010583423.2A patent/CN102543912B/en active Active
- 2010-12-27 US US12/979,316 patent/US20120145374A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070169918A1 (en) * | 2006-01-20 | 2007-07-26 | Hua-Shou Kuo | Combination cooler module |
US20090084529A1 (en) * | 2007-09-30 | 2009-04-02 | Tsung-Hsien Huang | Cooler module |
US20090242168A1 (en) * | 2008-03-27 | 2009-10-01 | Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. | Heat sink assembly and method for manufacturing the same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130255929A1 (en) * | 2012-04-03 | 2013-10-03 | Foxconn Technology Co., Ltd. | Heat dissipation device |
US11262140B2 (en) * | 2018-09-30 | 2022-03-01 | Tyco Electronics (Shanghai) Co. Ltd. | Heat sink and housing assembly |
US11988468B2 (en) * | 2018-09-30 | 2024-05-21 | Tyco Electronics (Shanghai) Co., Ltd. | Heat sink and housing assembly |
Also Published As
Publication number | Publication date |
---|---|
CN102543912A (en) | 2012-07-04 |
CN102543912B (en) | 2015-10-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: FU ZHUN PRECISION INDUSTRY (SHEN ZHEN) CO., LTD., Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, CHUN-CHI;LIU, JIAN;ZHANG, JING;REEL/FRAME:025540/0554 Effective date: 20101224 Owner name: FOXCONN TECHNOLOGY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHEN, CHUN-CHI;LIU, JIAN;ZHANG, JING;REEL/FRAME:025540/0554 Effective date: 20101224 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |