U.S. patent application number 12/039269 was filed with the patent office on 2009-09-03 for cooling fin.
This patent application is currently assigned to ASIA VITAL COMPONENTS CO., LTD.. Invention is credited to Ching-Hang Shen.
Application Number | 20090218073 12/039269 |
Document ID | / |
Family ID | 41012278 |
Filed Date | 2009-09-03 |
United States Patent
Application |
20090218073 |
Kind Code |
A1 |
Shen; Ching-Hang |
September 3, 2009 |
COOLING FIN
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.
Inventors: |
Shen; Ching-Hang;
(Kaohsiung, TW) |
Correspondence
Address: |
G. LINK CO., LTD.
3550 BELL ROAD
MINOOKA
IL
60447
US
|
Assignee: |
ASIA VITAL COMPONENTS CO.,
LTD.
KAOHSIUNG
TW
|
Family ID: |
41012278 |
Appl. No.: |
12/039269 |
Filed: |
February 28, 2008 |
Current U.S.
Class: |
165/80.3 |
Current CPC
Class: |
F28F 1/325 20130101;
H01L 2924/0002 20130101; H01L 23/467 20130101; H01L 2924/0002
20130101; H01L 2924/00 20130101 |
Class at
Publication: |
165/80.3 |
International
Class: |
F28F 7/00 20060101
F28F007/00 |
Claims
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.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] 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.
[0003] 2. Brief Description of the Related Art
[0004] 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.
[0005] 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
[0006] 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.
[0007] 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.
[0008] 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
[0009] 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:
[0010] FIG. 1 is a perspective view of a cooling fin according to a
preferred embodiment of the present invention;
[0011] FIG. 2 is an fragmentary perspective view of the cooling fin
shown in FIG. 1 illustrating the square protrusion part;
[0012] FIG. 3 is a perspective view of a cooling fin according to
another embodiment of the present invention; and
[0013] 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
[0014] 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.
[0015] 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.
[0016] 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.
[0017] 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.
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