US20120018132A1 - Heat dissipation device - Google Patents
Heat dissipation device Download PDFInfo
- Publication number
- US20120018132A1 US20120018132A1 US12/916,627 US91662710A US2012018132A1 US 20120018132 A1 US20120018132 A1 US 20120018132A1 US 91662710 A US91662710 A US 91662710A US 2012018132 A1 US2012018132 A1 US 2012018132A1
- Authority
- US
- United States
- Prior art keywords
- fin
- dissipation device
- heat dissipation
- centrifugal fan
- fin unit
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0233—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes the conduits having a particular shape, e.g. non-circular cross-section, annular
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
- F28F2250/08—Fluid driving means, e.g. pumps, fans
Definitions
- the present disclosure generally relates to heat dissipation, and particularly to a heat dissipation device for an electronic component.
- a commonly used heat dissipation device includes a plurality of fins stacked together.
- the fins are often made of copper, due to its high heat conductive efficiency.
- copper is expensive and difficult to machine, resulting in elevated unit costs.
- FIG. 1 is an isometric, assembled view of a heat dissipation device according to an exemplary embodiment of the present disclosure.
- FIG. 2 is an exploded view of the heat dissipation device of FIG. 1 .
- the heat dissipation device 10 includes a heat absorbing plate 12 , a centrifugal fan 16 , a fin assembly 18 mounted at a lateral side of the centrifugal fan 16 , and a heat pipe 14 thermally connecting the heat absorbing plate 12 with the fin assembly 18 .
- the heat absorbing plate 12 is a rectangular sheet made of heat conductive material, such as copper or aluminum. A bottom surface of the heat absorbing plate 12 attaches to an electronic component (not shown) to absorb heat generated by the electronic component.
- the heat pipe 14 includes an evaporator section 140 and a condenser section 142 respectively at two opposite ends thereof.
- the evaporator section 140 is attached on a top surface of the heat absorbing plate 12 .
- the condenser section 142 is oriented at an angle relative to the evaporator section 140 , and is positioned at a lateral side of the centrifugal fan 16 and attached to the fin assembly 18 .
- the centrifugal fan 16 includes a housing 160 , and an impeller 162 rotatably mounted in the housing 160 .
- the housing 160 includes a bottom plate 161 , a top plate 163 opposite to the bottom plate 161 , and a volute side plate 164 between the bottom plate 161 and the top plate 163 .
- the bottom plate 161 , the top plate 163 and the side plate 164 cooperatively define a receiving space (not labeled), housing the impeller 162 .
- the top plate 163 and the bottom plate 161 are respectively located at the top and bottom of the impeller 162 .
- the impeller 162 faces middle portions of the top plate 163 and the bottom plate 161 .
- a circular top air inlet 165 is defined in the middle portion of the top plate 163
- a circular bottom air inlet 166 is defined in the middle portion of the bottom plate 161 .
- a mounting base 167 is provided in the bottom air inlet 166 of the bottom plate 161 .
- the mounting base 167 includes a circular supporting plate 168 located at a middle of the bottom air inlet 166 , and a plurality of ribs 169 extending between a circumference of the supporting plate 168 and an inner edge of the bottom plate 161 at the bottom air inlet 166 .
- a tube 170 extends upward from the supporting plate 168 , receiving a bearing 171 therein.
- An air outlet 172 is defined in the side plate 164 of the housing 160 .
- the fin assembly 18 is located at the air outlet 172 of the centrifugal fan 16 and is thermally attached to the condenser section 142 of the heat pipe 14 .
- the fin assembly 18 includes a first fin unit 180 , and two second fin units 182 a , 182 b located at two opposite lateral sides of the first fin unit 180 , respectively.
- the first fin unit 180 and the two second fin units 182 a , 182 b are juxtaposed in a line, wherein the first fin unit 180 is located between the two second fin units 182 a , 182 b and faces the center of the air outlet 172 of the centrifugal fan 16 .
- the first fin unit 180 includes a plurality of first fins 181 stacked together.
- the two second fin units 182 a , 182 b respectively face two opposite outer portions of the air outlet 172 of the centrifugal fan 16 .
- the two second fin units 182 a , 182 b each include a plurality of second fins 183 a , 183 b stacked together.
- a surface area of each first fin 181 exceeds that of each second fin 183 a , 183 b .
- Two recesses 185 , 186 are respectively defined below the two second fin units 182 a , 182 b , to minimize any risk of the fin assembly 18 interfering with other components (not shown) nearby the fin assembly 18 when the heat dissipation device 10 is mounted in an electronic device such as a notebook computer.
- the first fins 181 of the first fin unit 180 are made of a material different from that of the second fins 183 a , 183 b of the two second fin units 182 a , 182 b .
- the material of the first fins 181 provides greater heat conductive efficiency than that of the second fins 183 a , 183 b .
- the first fins 181 are made of copper
- the second fins 183 a , 183 b are made of aluminum. Due to the high heat conductive efficiency of copper compared with the relatively low cost of aluminum, the fin assembly 18 has a relatively high heat conductive efficiency yet a relatively low cost.
- the centrifugal fan 16 generates airflow at the middle portion of the air outlet 172 exceeding that at each of the outer portions of the air outlet 172 . Since the surface area of the first fin 181 exceeds that of the second fins 183 a , 183 b , and a heat conductive efficiency of the first fin unit 180 exceeds that of the second fin units 183 a , 183 b , the airflow generated by the centrifugal fan 17 can be efficiently processed by the fin assembly 18 .
- the heat dissipation device 10 not only avoids interference between the fin assembly 18 and other nearby components, but also provides the heat dissipation device 10 with a high heat dissipation efficiency.
Abstract
An exemplary heat dissipation device includes a centrifugal fan and a fin assembly. An air outlet is defined in the centrifugal fan. The fin assembly is located at the air outlet of the centrifugal fan. The fin assembly includes a first fin unit and two second fin units. The first fin unit includes a plurality of first fins made of a first material. Each of the second fin units includes a plurality of second fins made of a second material. A heat conductive efficiency of the first material exceeds that of the second material.
Description
- 1. Technical Field
- The present disclosure generally relates to heat dissipation, and particularly to a heat dissipation device for an electronic component.
- 2. Description of Related Art
- With the continuing development of electronic technology, electronic components, such as CPUs (central processing units) and others, generate more heat in operation than previously. The heat is required to be dissipated immediately, to avoid the electronic components overheating and becoming damaged. Often, heat dissipation devices are used to dissipate heat of the electronic components.
- A commonly used heat dissipation device includes a plurality of fins stacked together. The fins are often made of copper, due to its high heat conductive efficiency. However, copper is expensive and difficult to machine, resulting in elevated unit costs.
- Accordingly, what is needed is a heat dissipation device which can overcome the described limitations.
- Many aspects of the embodiment can be better understood with reference to the following drawings. The components in the drawings are not necessarily drawn to scale, the emphasis instead placed upon clearly illustrating the principles of the present disclosure. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the views.
-
FIG. 1 is an isometric, assembled view of a heat dissipation device according to an exemplary embodiment of the present disclosure. -
FIG. 2 is an exploded view of the heat dissipation device ofFIG. 1 . - Referring to
FIGS. 1 and 2 , aheat dissipation device 10 according to an exemplary embodiment of the present disclosure is shown. Theheat dissipation device 10 includes aheat absorbing plate 12, acentrifugal fan 16, afin assembly 18 mounted at a lateral side of thecentrifugal fan 16, and aheat pipe 14 thermally connecting theheat absorbing plate 12 with thefin assembly 18. - The
heat absorbing plate 12 is a rectangular sheet made of heat conductive material, such as copper or aluminum. A bottom surface of theheat absorbing plate 12 attaches to an electronic component (not shown) to absorb heat generated by the electronic component. - The
heat pipe 14 includes anevaporator section 140 and acondenser section 142 respectively at two opposite ends thereof. Theevaporator section 140 is attached on a top surface of theheat absorbing plate 12. Thecondenser section 142 is oriented at an angle relative to theevaporator section 140, and is positioned at a lateral side of thecentrifugal fan 16 and attached to thefin assembly 18. - The
centrifugal fan 16 includes ahousing 160, and animpeller 162 rotatably mounted in thehousing 160. - The
housing 160 includes abottom plate 161, atop plate 163 opposite to thebottom plate 161, and avolute side plate 164 between thebottom plate 161 and thetop plate 163. Thebottom plate 161, thetop plate 163 and theside plate 164 cooperatively define a receiving space (not labeled), housing theimpeller 162. Thetop plate 163 and thebottom plate 161 are respectively located at the top and bottom of theimpeller 162. Theimpeller 162 faces middle portions of thetop plate 163 and thebottom plate 161. A circulartop air inlet 165 is defined in the middle portion of thetop plate 163, and a circularbottom air inlet 166 is defined in the middle portion of thebottom plate 161. Amounting base 167 is provided in thebottom air inlet 166 of thebottom plate 161. Themounting base 167 includes a circular supportingplate 168 located at a middle of thebottom air inlet 166, and a plurality ofribs 169 extending between a circumference of the supportingplate 168 and an inner edge of thebottom plate 161 at thebottom air inlet 166. Atube 170 extends upward from the supportingplate 168, receiving abearing 171 therein. Anair outlet 172 is defined in theside plate 164 of thehousing 160. - The
fin assembly 18 is located at theair outlet 172 of thecentrifugal fan 16 and is thermally attached to thecondenser section 142 of theheat pipe 14. Thefin assembly 18 includes afirst fin unit 180, and twosecond fin units first fin unit 180, respectively. Thefirst fin unit 180 and the twosecond fin units first fin unit 180 is located between the twosecond fin units air outlet 172 of thecentrifugal fan 16. Thefirst fin unit 180 includes a plurality offirst fins 181 stacked together. The twosecond fin units air outlet 172 of thecentrifugal fan 16. The twosecond fin units second fins first fin 181 exceeds that of eachsecond fin recesses second fin units fin assembly 18 interfering with other components (not shown) nearby thefin assembly 18 when theheat dissipation device 10 is mounted in an electronic device such as a notebook computer. - The
first fins 181 of thefirst fin unit 180 are made of a material different from that of thesecond fins second fin units first fins 181 provides greater heat conductive efficiency than that of thesecond fins first fins 181 are made of copper, and thesecond fins fin assembly 18 has a relatively high heat conductive efficiency yet a relatively low cost. - In addition, the
centrifugal fan 16 generates airflow at the middle portion of theair outlet 172 exceeding that at each of the outer portions of theair outlet 172. Since the surface area of thefirst fin 181 exceeds that of thesecond fins first fin unit 180 exceeds that of thesecond fin units fin assembly 18. Thus, theheat dissipation device 10 not only avoids interference between thefin assembly 18 and other nearby components, but also provides theheat dissipation device 10 with a high heat dissipation efficiency. - It is to be understood that even though numerous characteristics and advantages of the embodiment have been set forth in the foregoing description, together with details of the structures and functions of the embodiment, 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 invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Claims (12)
1. A heat dissipation device comprising:
a centrifugal fan defining an air outlet therein; and
a fin assembly located at the air outlet of the centrifugal fan, the fin assembly comprising a first fin unit and at least one second fin unit juxtaposed with the first fin unit in a line, the first fin unit comprising a plurality of first fins made of a first material, the at least one second fin unit comprising a plurality of second fins made of a second material;
wherein a heat conductive efficiency of the first material exceeds that of the second material.
2. The heat dissipation device of claim 1 , wherein the first material is copper, and the second material is aluminum.
3. The heat dissipation device of claim 2 , wherein the first fin unit faces the center of the air outlet of the centrifugal fan, the at least one second fin unit comprises two second fin units respectively facing two opposite outer portions of the air outlet of the centrifugal fan, and the first fin unit is located between the two second fin units.
4. The heat dissipation device of claim 3 , wherein a surface area of each of the first fins exceeds that of each of the second fins, and two recesses are respectively defined below the two second fin units.
5. The heat dissipation device of claim 2 , wherein a surface area of each of the first fins exceeds that of each of the second fins, and a recess is defined below the at least one second fin unit.
6. The heat dissipation device of claim 1 , further comprising a heat absorbing plate and a heat pipe, wherein one end of the heat pipe is attached to the heat absorbing plate, and an opposite end of the heat pipe is attached to the fin assembly.
7. A heat dissipation device comprising:
a centrifugal fan defining an air outlet therein; the centrifugal fan adapted for generating airflow and outputting the airflow from the air outlet; and
a fin assembly located at the air outlet of the centrifugal fan, the fin assembly comprising a first fin unit and at least one second fin unit juxtaposed with the first fin unit in a line, the first fin unit comprising a plurality of first fins made of a first material, the at least one second fin unit comprising a plurality of second fins made of a second material;
wherein a heat conductive efficiency of the first material exceeds that of the second material, and the airflow at the first fin unit exceeds that at the at least one second fin unit.
8. The heat dissipation device of claim 7 , wherein the first material is copper, and the second material is aluminum.
9. The heat dissipation device of claim 8 , wherein the first fin unit faces the center of the air outlet of the centrifugal fan, the at least one second fin unit comprises two second fin units respectively facing two opposite outer portions of the air outlet of the centrifugal fan, and the first fin unit is located between the two second fin units.
10. The heat dissipation device of claim 9 , wherein a surface area of each of the first fins exceeds that of each of the second fins, and two recesses are respectively defined below the two second fin units.
11. The heat dissipation device of claim 7 , further comprising a heat absorbing plate and a heat pipe, wherein one end of the heat pipe is attached to the heat absorbing plate, and an opposite end of the heat pipe is attached to the fin assembly.
12. A heat dissipation device comprising:
a centrifugal fan defining an air outlet therein; and
a fin assembly comprising a first fin unit and a pair of second fin units at opposite sides of the first fin unit, the first and second fin units arranged in line facing the air outlet of the centrifugal fan, the first fin unit protruding below the second fin units and being made of a first material having high heat conductivity, the second fin units being made of a second material having lower heat conductivity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW99124235 | 2010-07-23 | ||
TW099124235A TW201206325A (en) | 2010-07-23 | 2010-07-23 | Heat dissipation device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120018132A1 true US20120018132A1 (en) | 2012-01-26 |
Family
ID=45492605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/916,627 Abandoned US20120018132A1 (en) | 2010-07-23 | 2010-10-31 | Heat dissipation device |
Country Status (2)
Country | Link |
---|---|
US (1) | US20120018132A1 (en) |
TW (1) | TW201206325A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130168060A1 (en) * | 2012-01-04 | 2013-07-04 | Bor-Haw Chang | Thermal module |
US20150362258A1 (en) * | 2014-06-13 | 2015-12-17 | Nidec Corporation | Heat module |
US20170189025A1 (en) * | 2013-03-15 | 2017-07-06 | Boston Scientific Scimed, Inc. | System for controlling a tissue-stapling operation |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI751955B (en) * | 2021-06-11 | 2022-01-01 | 宏碁股份有限公司 | Heat dissipation structure and electronic device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6650540B2 (en) * | 2001-11-29 | 2003-11-18 | Kabushiki Kaisha Toshiba | Cooling unit having a heat-receiving section and a cooling fan, and electronic apparatus incorporating the cooling unit |
US20060181851A1 (en) * | 2005-02-15 | 2006-08-17 | Wang Frank | Heatsink structure with an air duct |
US7333332B2 (en) * | 2005-02-14 | 2008-02-19 | Inventec Corporation | Heatsink thermal module with noise improvement |
US20080043436A1 (en) * | 2006-08-21 | 2008-02-21 | Foxconn Technology Co., Ltd. | Thermal module |
US7345874B2 (en) * | 2004-08-19 | 2008-03-18 | Compal Electronics, Inc. | Heat dissipating device with dust-collecting mechanism |
US20080105410A1 (en) * | 2006-11-03 | 2008-05-08 | Foxconn Technology Co., Ltd. | Heat dissipation apparatus |
US20090178787A1 (en) * | 2008-01-11 | 2009-07-16 | Tsung-Hsien Huang | Cooler module without base panel |
-
2010
- 2010-07-23 TW TW099124235A patent/TW201206325A/en unknown
- 2010-10-31 US US12/916,627 patent/US20120018132A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6650540B2 (en) * | 2001-11-29 | 2003-11-18 | Kabushiki Kaisha Toshiba | Cooling unit having a heat-receiving section and a cooling fan, and electronic apparatus incorporating the cooling unit |
US7345874B2 (en) * | 2004-08-19 | 2008-03-18 | Compal Electronics, Inc. | Heat dissipating device with dust-collecting mechanism |
US7333332B2 (en) * | 2005-02-14 | 2008-02-19 | Inventec Corporation | Heatsink thermal module with noise improvement |
US20060181851A1 (en) * | 2005-02-15 | 2006-08-17 | Wang Frank | Heatsink structure with an air duct |
US20080043436A1 (en) * | 2006-08-21 | 2008-02-21 | Foxconn Technology Co., Ltd. | Thermal module |
US20080105410A1 (en) * | 2006-11-03 | 2008-05-08 | Foxconn Technology Co., Ltd. | Heat dissipation apparatus |
US20090178787A1 (en) * | 2008-01-11 | 2009-07-16 | Tsung-Hsien Huang | Cooler module without base panel |
Non-Patent Citations (1)
Title |
---|
Frosty Tech, Zalman VF700-AlCu LED VGA Heatsink Review, 20 October 2006, Paragraph 2 and 5 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20130168060A1 (en) * | 2012-01-04 | 2013-07-04 | Bor-Haw Chang | Thermal module |
US20170189025A1 (en) * | 2013-03-15 | 2017-07-06 | Boston Scientific Scimed, Inc. | System for controlling a tissue-stapling operation |
US20150362258A1 (en) * | 2014-06-13 | 2015-12-17 | Nidec Corporation | Heat module |
US9909813B2 (en) * | 2014-06-13 | 2018-03-06 | Nidec Corporation | Heat module |
Also Published As
Publication number | Publication date |
---|---|
TW201206325A (en) | 2012-02-01 |
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Legal Events
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---|---|---|---|
AS | Assignment |
Owner name: FOXCONN TECHNOLOGY CO., LTD., TAIWAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHEN, RUNG-AN;REEL/FRAME:025223/0545 Effective date: 20101022 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |