US20090218073A1 - Cooling fin - Google Patents

Cooling fin Download PDF

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Publication number
US20090218073A1
US20090218073A1 US12/039,269 US3926908A US2009218073A1 US 20090218073 A1 US20090218073 A1 US 20090218073A1 US 3926908 A US3926908 A US 3926908A US 2009218073 A1 US2009218073 A1 US 2009218073A1
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US
United States
Prior art keywords
cooling fin
heat
slot
lateral sides
heat dissipation
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
Application number
US12/039,269
Inventor
Ching-Hang Shen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Asia Vital Components Co Ltd
Original Assignee
Asia Vital Components Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asia Vital Components Co Ltd filed Critical Asia Vital Components Co Ltd
Priority to US12/039,269 priority Critical patent/US20090218073A1/en
Assigned to ASIA VITAL COMPONENTS CO., LTD. reassignment ASIA VITAL COMPONENTS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SHEN, CHING-HANG
Publication of US20090218073A1 publication Critical patent/US20090218073A1/en
Priority to US13/269,712 priority patent/US8490680B2/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • F28F1/24—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 transversely
    • F28F1/32—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 transversely the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings
    • 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
    • H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
    • 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 present invention is related to a cooling fin and particularly to a cooling fin, which is capable of increasing turbulent currents and carrying out a great deal of heat source.
  • the processing speed of the electronic chip increases due to incessantly progress of technology but it leads to increase of the generated heat as well. Nevertheless, the high temperature is a primary reason of the undesirable operation efficiency and burn-out of the chip. Therefore, how to dissipate the heat from the chip for protecting the chip is one of the subjects that are researched and developed currently.
  • an object of the present invention is to provide a cooling fin, which get involve the concept of turbulent flow for increasing the stagnation time of the air staying at the respective cooling fin of the cooling fin set and enhancing the efficiency of heat dissipation greatly in addition to increase the area of the heat dissipation.
  • a cooling fin according to the present invention comprises at least a projection part and a slot, which is disposed at the lateral sides, for turning the airflow into the turbulent flow while the air flow passing through the slot and for creating eddy currents at the periphery of the cooling fin. Therefore, the cold air, which flows between a plurality of cooling fins, can stagnate longer time for carrying more heat outward and enhancing the heat dissipation efficiency greatly.
  • the protrusion part can be circular or the square shape. Further, a plurality of the protrusion parts can be arranged irregularly on the plate member such that the effect of different eddy currents at the periphery of the cooling fin can be produced advantageously and the slots at the lateral sides of the respective protrusion part are helpful for increasing the coefficient of heat exchange of the cooling fin and enhancing the integral performance of the cooling fin.
  • FIG. 1 is a perspective view of a cooling fin according to a preferred embodiment of the present invention
  • FIG. 2 is an fragmentary perspective view of the cooling fin shown in FIG. 1 illustrating the square protrusion part
  • FIG. 3 is a perspective view of a cooling fin according to another embodiment of the present invention.
  • FIG. 4 is a fragmentary perspective view of the cooling fin shown in FIG. 3 illustrating the circular protrusion part.
  • a cooling fin 10 basically is a plate member 1 with a bent edge 11 at two opposite lateral sides.
  • the bent edge 11 can be provided with an engaging part for joining two plate members 1 .
  • At least a protrusion part 12 is provided on the plate member 1 and the protrusion part 12 is square shape with a slot 121 or a plurality of slots 121 being disposed at each of the lateral sides thereof for guiding the airflows such that the airflows can be turned into the turbulent flows to surround the plate member 1 . In this way, the stagnation time of the airflow can be extended to carry more heat outward for enhancing heat dissipation.
  • the projection parts 12 can be arranged irregularly at the cooling fin 10 such that the effect resulting from different eddy currents at the periphery of the cooling fin and the slots 121 at the lateral sides of the respective projection part 12 can promote the coefficient of heat exchange of the cooling fin 10 to enhance the integral performance of the cooling fin 10 .
  • the cooling fin 10 of the second embodiment basically is a plate member 1 with a bent edge 11 at two opposite lateral sides thereof.
  • the bent edge 11 can be provided with an engaging part for joining two plate members 1 .
  • At least a protrusion part 12 is provided on the plate member 1 and the protrusion part 12 is square shape with a slot 121 or a plurality of slots 121 being disposed at each of the lateral sides thereof for guiding the airflows such that the airflows can be turned into the turbulent flows to surround the plate member 1 .
  • the difference of the respective projection 12 from that shown in FIGS. 1 and 2 is in that the shape of the respective projection 12 is circular instead of square. In this way, the stagnation time of the airflow can be extended to carry more heat outward for enhancing heat dissipation as well.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

A cooling fin provides at least a projection part and at least a slot is disposed at lateral sides for the airflow producing turbulent flows while passing through the slot and creating eddy currents at the periphery of the cooling fin. Therefore, the cold air, which flows between a plurality of cooling fins, can stagnate longer time for carrying more heat outward and enhancing the heat dissipation efficiency greatly.

Description

    BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention is related to a cooling fin and particularly to a cooling fin, which is capable of increasing turbulent currents and carrying out a great deal of heat source.
  • 2. Brief Description of the Related Art
  • The processing speed of the electronic chip increases due to incessantly progress of technology but it leads to increase of the generated heat as well. Nevertheless, the high temperature is a primary reason of the undesirable operation efficiency and burn-out of the chip. Therefore, how to dissipate the heat from the chip for protecting the chip is one of the subjects that are researched and developed currently.
  • In order to obtain the best effect of heat dissipation and promote the heat dissipation efficiency, most researches and developments are focus on the increased conductive area for the heat transmitted by the heat sink and the fan mounted to the heat sink for forcing the airflow. Besides, a plurality of cooling fins being stacked as a cooling fin set in association with guide heat pipes is utilized to promote the heat dissipation efficiency. The respective cooling fin has a flat plate member with two opposite bent edges for engaging with each other. When the fan induces the air to pass through the cooling fin set, the airflow moves fast and it is able to carry a small amount of heat on the cooing fin set only. Hence, the effect of heat dissipation is still limited although it was designed for expecting the good heat transfer with the effective heat dissipation.
    • SUMMARY OF THE INVENTION
  • In order to overcome the deficiencies of the prior art, an object of the present invention is to provide a cooling fin, which get involve the concept of turbulent flow for increasing the stagnation time of the air staying at the respective cooling fin of the cooling fin set and enhancing the efficiency of heat dissipation greatly in addition to increase the area of the heat dissipation.
  • Accordingly, A cooling fin according to the present invention comprises at least a projection part and a slot, which is disposed at the lateral sides, for turning the airflow into the turbulent flow while the air flow passing through the slot and for creating eddy currents at the periphery of the cooling fin. Therefore, the cold air, which flows between a plurality of cooling fins, can stagnate longer time for carrying more heat outward and enhancing the heat dissipation efficiency greatly.
  • Wherein, the protrusion part can be circular or the square shape. Further, a plurality of the protrusion parts can be arranged irregularly on the plate member such that the effect of different eddy currents at the periphery of the cooling fin can be produced advantageously and the slots at the lateral sides of the respective protrusion part are helpful for increasing the coefficient of heat exchange of the cooling fin and enhancing the integral performance of the cooling fin.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The detail structure, the applied principle, the function and the effectiveness of the present invention can be more fully understood with reference to the following description and accompanying drawings, in which:
  • FIG. 1 is a perspective view of a cooling fin according to a preferred embodiment of the present invention;
  • FIG. 2 is an fragmentary perspective view of the cooling fin shown in FIG. 1 illustrating the square protrusion part;
  • FIG. 3 is a perspective view of a cooling fin according to another embodiment of the present invention; and
  • FIG. 4 is a fragmentary perspective view of the cooling fin shown in FIG. 3 illustrating the circular protrusion part.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIGS. 1 and 2, a cooling fin 10 according to the first preferred embodiment of the present invention basically is a plate member 1 with a bent edge 11 at two opposite lateral sides. The bent edge 11 can be provided with an engaging part for joining two plate members 1. At least a protrusion part 12 is provided on the plate member 1 and the protrusion part 12 is square shape with a slot 121 or a plurality of slots 121 being disposed at each of the lateral sides thereof for guiding the airflows such that the airflows can be turned into the turbulent flows to surround the plate member 1. In this way, the stagnation time of the airflow can be extended to carry more heat outward for enhancing heat dissipation.
  • Besides, the projection parts 12 can be arranged irregularly at the cooling fin 10 such that the effect resulting from different eddy currents at the periphery of the cooling fin and the slots 121 at the lateral sides of the respective projection part 12 can promote the coefficient of heat exchange of the cooling fin 10 to enhance the integral performance of the cooling fin 10.
  • Referring to FIGS. 3 and 4, another embodiment of a cooling fin for a heat sink according to the present invention is illustrated. Similarly, the cooling fin 10 of the second embodiment basically is a plate member 1 with a bent edge 11 at two opposite lateral sides thereof. The bent edge 11 can be provided with an engaging part for joining two plate members 1. At least a protrusion part 12 is provided on the plate member 1 and the protrusion part 12 is square shape with a slot 121 or a plurality of slots 121 being disposed at each of the lateral sides thereof for guiding the airflows such that the airflows can be turned into the turbulent flows to surround the plate member 1. The difference of the respective projection 12 from that shown in FIGS. 1 and 2 is in that the shape of the respective projection 12 is circular instead of square. In this way, the stagnation time of the airflow can be extended to carry more heat outward for enhancing heat dissipation as well.
  • While the invention has been described with referencing to the preferred embodiments thereof, it is to be understood that modifications or variations may be easily made without departing from the spirit of this invention, which is defined by the appended claims.

Claims (3)

1. A cooling fin comprising:
a plate member with a bent edge at two opposite sides thereof; and
at least a projection part being irregularly arranged at said plate member;
wherein, each of said lateral sides of projection part has at least a slot available for being passed through with an airflow.
2. The cooling fin as defined in claim 1, wherein said projection is square-shaped, circular-shaped or any shapes.
3. The cooling fin as defined in claim 1, wherein said slot surrounds said lateral sides continuously or discretely.
US12/039,269 2008-02-28 2008-02-28 Cooling fin Abandoned US20090218073A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/039,269 US20090218073A1 (en) 2008-02-28 2008-02-28 Cooling fin
US13/269,712 US8490680B2 (en) 2008-02-28 2011-10-10 Plate cooling fin with slotted projections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/039,269 US20090218073A1 (en) 2008-02-28 2008-02-28 Cooling fin

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/269,712 Continuation-In-Part US8490680B2 (en) 2008-02-28 2011-10-10 Plate cooling fin with slotted projections

Publications (1)

Publication Number Publication Date
US20090218073A1 true US20090218073A1 (en) 2009-09-03

Family

ID=41012278

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/039,269 Abandoned US20090218073A1 (en) 2008-02-28 2008-02-28 Cooling fin

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Country Link
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Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1788516A (en) * 1927-12-08 1931-01-13 American Electric Heating Comp Radiator
US2089340A (en) * 1932-01-19 1937-08-10 Moore Dry Kiln Co Extended fin surface for conduits
US2680009A (en) * 1953-02-25 1954-06-01 Rca Corp Cooling unit
US2804286A (en) * 1955-03-18 1957-08-27 Pintarelli Ralph Radiation fins
US2899178A (en) * 1959-08-11 Heat exchange fins and assembly
US3817354A (en) * 1972-06-01 1974-06-18 Gear Co M W Oil pan for tractors
USD248770S (en) * 1975-09-30 1978-08-01 Niels Runar Hilding Michaelsen Convector plate
US4555588A (en) * 1983-10-26 1985-11-26 Rte Corporation Heat transfer device for electrical connector in insulating housing of high voltage splice or terminator
US4709753A (en) * 1986-09-08 1987-12-01 Nordyne, Inc. Uni-directional fin-and-tube heat exchanger
US5667006A (en) * 1995-01-23 1997-09-16 Lg Electronics, Inc. Fin tube heat exchanger
US6550529B1 (en) * 2002-04-17 2003-04-22 Sunonwealth Electric Machine Industry Co., Ltd. Heatsink device
US20070163764A1 (en) * 2003-05-23 2007-07-19 Kunihiko Kaga Heat exchanger of plate fin and tube type
US20070163767A1 (en) * 2004-01-20 2007-07-19 Mitchell Paul L Brazed plate fin heat exchanger
US7254026B2 (en) * 2005-11-18 2007-08-07 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Heat dissipation device with heat pipe
US20070187082A1 (en) * 2006-02-14 2007-08-16 Li-Wei Fan Chiang Structural enhanced heat dissipating device

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899178A (en) * 1959-08-11 Heat exchange fins and assembly
US1788516A (en) * 1927-12-08 1931-01-13 American Electric Heating Comp Radiator
US2089340A (en) * 1932-01-19 1937-08-10 Moore Dry Kiln Co Extended fin surface for conduits
US2680009A (en) * 1953-02-25 1954-06-01 Rca Corp Cooling unit
US2804286A (en) * 1955-03-18 1957-08-27 Pintarelli Ralph Radiation fins
US3817354A (en) * 1972-06-01 1974-06-18 Gear Co M W Oil pan for tractors
USD248770S (en) * 1975-09-30 1978-08-01 Niels Runar Hilding Michaelsen Convector plate
US4555588A (en) * 1983-10-26 1985-11-26 Rte Corporation Heat transfer device for electrical connector in insulating housing of high voltage splice or terminator
US4709753A (en) * 1986-09-08 1987-12-01 Nordyne, Inc. Uni-directional fin-and-tube heat exchanger
US5667006A (en) * 1995-01-23 1997-09-16 Lg Electronics, Inc. Fin tube heat exchanger
US6550529B1 (en) * 2002-04-17 2003-04-22 Sunonwealth Electric Machine Industry Co., Ltd. Heatsink device
US20070163764A1 (en) * 2003-05-23 2007-07-19 Kunihiko Kaga Heat exchanger of plate fin and tube type
US20070163767A1 (en) * 2004-01-20 2007-07-19 Mitchell Paul L Brazed plate fin heat exchanger
US7254026B2 (en) * 2005-11-18 2007-08-07 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Heat dissipation device with heat pipe
US20070187082A1 (en) * 2006-02-14 2007-08-16 Li-Wei Fan Chiang Structural enhanced heat dissipating device

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ASIA VITAL COMPONENTS CO., LTD., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHEN, CHING-HANG;REEL/FRAME:020577/0114

Effective date: 20080225

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION