U.S. patent application number 12/855708 was filed with the patent office on 2011-11-17 for fin and heat sink having the same.
This patent application is currently assigned to ASIA VITAL COMPONENTS CO., LTD.. Invention is credited to Kuo-Sheng Lin, FeiFei Shi.
Application Number | 20110277965 12/855708 |
Document ID | / |
Family ID | 44910713 |
Filed Date | 2011-11-17 |
United States Patent
Application |
20110277965 |
Kind Code |
A1 |
Lin; Kuo-Sheng ; et
al. |
November 17, 2011 |
FIN AND HEAT SINK HAVING THE SAME
Abstract
The present invention provides a fin and a heat sink. The fin
includes a body having at least one first through-hole and at least
one first protrusion. The first protrusion extends from the first
through-hole toward one side of the body to form a first protruding
end. At least one first notch is provided on the body in
communication with the first through-hole. The fins are stacked up
to form a fin set. A first heat pipe penetrates the fin set to
constitute the heat sink. The first heat pipe penetrates the first
through-hole while the first notch is expanded, so that the first
protruding end tightly abuts against the first heat pipe. In this
way, the structural strength of the fin is improved, the first heat
pipe is protected from wearing due to the rubbing of fins against
the heat pipe, and the heat-conducting efficiency is increased.
Inventors: |
Lin; Kuo-Sheng; (Sinjhuang
City, TW) ; Shi; FeiFei; (Sinjhuang City,
TW) |
Assignee: |
ASIA VITAL COMPONENTS CO.,
LTD.
Sinjhuang City
TW
|
Family ID: |
44910713 |
Appl. No.: |
12/855708 |
Filed: |
August 13, 2010 |
Current U.S.
Class: |
165/104.26 ;
165/185 |
Current CPC
Class: |
H01L 2924/0002 20130101;
H01L 23/467 20130101; H01L 23/427 20130101; H01L 2924/0002
20130101; H01L 2924/00 20130101; H01L 23/3672 20130101; F28F 1/32
20130101; F28D 15/0275 20130101 |
Class at
Publication: |
165/104.26 ;
165/185 |
International
Class: |
F28D 15/04 20060101
F28D015/04; F28F 7/00 20060101 F28F007/00 |
Foreign Application Data
Date |
Code |
Application Number |
May 14, 2010 |
TW |
099115435 |
Claims
1. A fin, comprising: a body having at least one first through-hole
and at least one first protrusion, the first protrusion extending
from the periphery of the first through-hole toward one side of the
body to form a first protruding end, at least one first notch being
provided on the body in communication with the first
through-hole.
2. The fin according to claim 1, wherein the first notch has a
first portion formed on the body, the first portion extends
radially from the periphery of the first through-hole in a
direction away from the first through-hole.
3. The fin according to claim 1, wherein the first notch has a
first portion and a second portion, the first portion is formed on
the body and extends radially form the periphery of the first
through-hole in a direction away from the first through-hole, the
second portion extends from the first portion to the first
protrusion without penetrating the first protruding end.
4. The fin according to claim 1, wherein the first notch has a
first portion and a second portion, the first portion is formed on
the body and extends radially form the periphery of the first
through-hole in a direction away from the first through-hole, the
second portion extends from the first portion to the first
protrusion and penetrates the first protruding end.
5. The fin according to claim 1, further comprising at least one
second through-hole and at least one second protrusion, the second
through-hole being formed on the body, the second protrusion
extending from the periphery of the second through-hole toward the
other side of the body to form a second protruding end, at least
one second notch being formed on the body in communication with the
second through-hole.
6. The fin according to claim 2, further comprising at least one
second through-hole and at least one second protrusion, the second
through-hole being formed on the body, the second protrusion
extending from the periphery of the second through-hole toward the
other side of the body to form a second protruding end, at least
one second notch being formed on the body in communication with the
second through-hole.
7. The fin according to claim 3, further comprising at least one
second through-hole and at least one second protrusion, the second
through-hole being formed on the body, the second protrusion
extending from the periphery of the second through-hole toward the
other side of the body to form a second protruding end, at least
one second notch being formed on the body in communication with the
second through-hole.
8. The fin according to claim 4, further comprising at least one
second through-hole and at least one second protrusion, the second
through-hole being formed on the body, the second protrusion
extending from the periphery of the second through-hole toward the
other side of the body to form a second protruding end, at least
one second notch being formed on the body in communication with the
second through-hole.
9. The fin according to claim 5, wherein the second notch has a
third portion formed on the body, the third portion extends
radially from the periphery of the second through-hole in a
direction away from the second through-hole.
10. The fin according to claim 5, wherein the second notch has a
third portion and a fourth portion, the third portion is formed on
the body and extends radially from the periphery of the second
through-hole in a direction away from the second through-hole, the
fourth portion extends from the third portion to the second
protrusion without penetrating the second protruding end.
11. The fin according to claim 5, wherein the second notch has a
third portion and a fourth portion, the third portion is formed on
the body and extends radially from the periphery of the second
through-hole in a direction away from the second through-hole, the
fourth portion extends from the third portion to the second
protrusion and penetrates the second protruding end.
12. A heat sink, comprising; a fin set having a plurality of fins,
each of the fins comprising a body, the body having at least one
first through-hole and at least one first protrusion, the first
protrusion extending from the periphery of the first through-hole
toward one side of the body to form a first protruding end, at
least one first notch being provided on the body in communication
with the first through-hole; and at least one first heat pipe
having at least one first heat-releasing end and at least one first
heat-absorbing end, the first heat-releasing end penetrating the
first through-holes of the respective fins.
13. The heat sink according to claim 12, wherein the first notch
has a first portion formed on the body, the first portion extends
radially from the periphery of the first through-hole in a
direction away from the first through-hole
14. The heat sink according to claim 12, wherein the first notch
has a first portion and a second portion, the first portion is
formed on the body and extends radially form the periphery of the
first through-hole in a direction away from the first through-hole,
the second portion extends from the first portion to the first
protrusion without penetrating the first protruding end.
15. The heat sink according to claim 12, wherein the first notch
has a first portion and a second portion, the first portion is
formed on the body and extends radially form the periphery of the
first through-hole in a direction away from the first through-hole,
the second portion extends from the first portion to the first
protrusion and penetrates the first protruding end.
16. The heat sink according to claim 12, further comprising at
least one second through-hole and at least one second protrusion,
the second through-hole being formed on the body, the second
protrusion extending from the periphery of the second through-hole
toward the other side of the body to form a second protruding end,
at least one second notch being formed on the body in communication
with the second through-hole.
17. The heat sink according to claim 13, further comprising at
least one second through-hole and at least one second protrusion,
the second through-hole being formed on the body, the second
protrusion extending from the periphery of the second through-hole
toward the other side of the body to form a second protruding end,
at least one second notch being formed on the body in communication
with the second through-hole.
18. The heat sink according to claim 14, further comprising at
least one second through-hole and at least one second protrusion,
the second through-hole being formed on the body, the second
protrusion extending from the periphery of the second through-hole
toward the other side of the body to form a second protruding end,
at least one second notch being formed on the body in communication
with the second through-hole.
19. The heat sink according to claim 15, further comprising at
least one second through-hole and at least one second protrusion,
the second through-hole being formed on the body, the second
protrusion extending from the periphery of the second through-hole
toward the other side of the body to form a second protruding end,
at least one second notch being formed on the body in communication
with the second through-hole.
20. The heat sink according to claim 16, wherein the second notch
has a third portion formed on the body, the third portion extends
radially from the periphery of the second through-hole in a
direction away from the second through-hole.
21. The heat sink according to claim 16, wherein the second notch
has a third portion and a fourth portion, the third portion is
formed on the body and extends radially from the periphery of the
second through-hole in a direction away from the second
through-hole, the fourth portion extends from the third portion to
the second protrusion without penetrating the second protruding
end.
22. The heat sink according to claim 16, wherein the second notch
has a third portion and a fourth portion, the third portion is
formed on the body and extends radially from the periphery of the
second through-hole in a direction away from the second
through-hole, the fourth portion extends from the third portion to
the second protrusion and penetrates the second protruding end.
23. The heat sink according to claim 12, wherein the first
heat-releasing end of the first heat pipe penetrates through the
first protrusion and the first protruding end to connect the first
through-holes of the respective fins.
24. The heat sink according to claim 12, wherein the first notch
allows the first protrusion to expand when the first heat pipe
penetrates the first through-hole, the protruding end of the
expanded first protrusion abuts against the first heat pipe.
25. The heat sink according to claim 16, further comprising a
second heat pipe, the second heat pipe having a second
heat-absorbing end and a second heat-releasing end, the second
heat-releasing end penetrates the second protrusion and the second
protruding end to connect the second through-holes of the
respective fins,
26. The heat sink according to claim 25, wherein the second notch
allows the second protrusion to expand when the second heat pipe
penetrates the second through-hole, the protruding end of the
expanded second protrusion abuts against the second heat pipe.
Description
[0001] This application claims the priority benefit of Taiwan
patent application number 099115435 filed on May 14, 2010.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The present invention relates to a fin and a heat sink
having the same, and in particular to a fin capable of preventing
the surface of a heat pipe from wearing, increasing the structural
strength of the fin, and increasing the heat-conducting efficiency
of the fin.
[0004] 2. Description of Prior Art
[0005] With the advancement of semiconductor technology, the volume
of an integrated circuit is reduced. In order to make the
integrated circuit to process greater amount of data, several times
of electronic elements than before are mounted on the integrated
circuit of the same volume. The more the electronic elements
mounted on the integrated circuit are, the greater the heat
generated by the electronic elements is. Taking a central processor
as an example, the heat generated by the central processor in its
heavy load may even burn down the central processor. Thus, it is an
important issue to provide a heat sink for the integrated
circuit.
[0006] A common heat sink is made of metallic materials of high
heat-conducting efficiency. The heat sink is provided with fins to
increase the total area for heat dissipation. Further, in order to
increase the heat-dissipating effect, a fan is used to generate a
compulsive airflow for heat dissipation. Further, heat pipes may be
used to facilitate the heat dissipation, thereby preventing the
integrated circuit from burning down.
[0007] Please refer to FIGS. 1 and 2, which are an assembled
perspective view and a partial schematic view of a conventional
heat sink. As shown in these drawings, the heat sink 10 has a
plurality of heat pipes 20 and a plurality of heat-dissipating fins
30. Each of the heat pipes 20 has a heat-releasing end 21 and a
heat-absorbing end 22. The heat-dissipating fins 30 define a
plurality of heat-dissipating channels 31. Each of the
heat-dissipating fins 30 has at least one through-hole 32 and a
protrusion 33 protruding form the periphery of the through-hole 32.
The heat-releasing end 21 of the heat pipe 20 penetrates the
through-hole 32 and the protrusion 33 to connect the respective
heat-dissipating fins 30 in series, so that the through-holes 32
and the protrusions 33 of the respective fins 30 can be brought
into tight contact with each other. By this arrangement, an optimal
heat-conducting effect can be generated between the heat pipes 20
and the heat-dissipating fins 30. The heat-dissipating fins 30 are
overlapped with each other, thereby saving materials and achieving
better heat-exchange efficiency. Each of the heat-dissipating fins
30 is so thin that the structural strength of the heat-dissipating
fin 30 is insufficient. When the heat pipe 20 penetrates the
through-holes 32 and the protrusions 33, the heat pipe 20 may make
the through-holes 32 of the respective heat-dissipating fins 30 to
suffer deformation or damage. Furthermore, the outer surface of the
heat pipe 20 may be worn due to the rubbing of the heat-dissipating
fins 30 against the heat pipe, which affecting the heat-conducting
effect of the heat pipe 20.
[0008] According to the above, the prior art has disadvantages as
follows:
[0009] (1) the heat-dissipating fins may suffer damage due to the
penetration of the heat pipes;
[0010] (2) the heat pipe may be worn due to the rubbing of the
heat-dissipating fins against the heat pipe; and
[0011] (3) the heat-conducting efficiency of the heat sink is
reduced.
[0012] Therefore, the present Inventor and the manufacturers in
this field have made attempt to solve the problems of prior
art.
SUMMARY OF THE INVENTION
[0013] In order to solve the above problems, an objective of the
present invention is to provide a fin capable of increasing the
heat-conducting efficiency and the structural strength thereof and
a heat sink having such fins.
[0014] In order to achieve the above objectives, the present
invention provides a fin and a heat sink having the fins. The fin
includes a body having at least one through-hole and at least one
first protrusion, the first protrusion protruding from the
periphery of the first through-hole toward one side of the body to
form a first protruding end. The fin also has at least one first
notch formed on the body in communication with the first
through-hole. The first notch has a first portion extending
radially from the periphery of the first through-hole in a
direction away from the first through-hole, and a second portion
extending from the first portion to the first protrusion. The
second portion may not penetrate or penetrate the first protruding
end. The fins are stacked up to form a fin set. At least one first
heat pipe penetrates the first through-holes of the fins to form a
heat sink. When the first heat pipe penetrates the first
through-holes, the first protruding end of the first protrusion can
tightly abut against the first heat pipe due to the expansion of
the first notch, thereby increasing the total structural strength
of the fins. Further, the first heat pipe can be protected from
wearing due to the rubbing of the fins against the heat pipe.
Further, the body of the fin can be prevented from suffer damage
due to the penetration of the heat pipe. On the other hand, the
heat-conducting efficiency can be improved greatly.
[0015] Therefore, the present invention has advantages as
follows:
[0016] (1) the structural strength of the fins is increased;
[0017] (2) the surface of the heat pipe is protected from wearing;
and
[0018] (3) the heat-conducting efficiency is increased.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 is a perspective view showing a conventional heat
sink;
[0020] FIG. 2 is a perspective view showing a conventional
heat-dissipating fin;
[0021] FIG. 3A is a perspective view showing a fin according to a
preferred embodiment of the present invention;
[0022] FIG. 3B is a perspective view showing the fin according to
another preferred embodiment of the present invention;
[0023] FIG. 3C is a perspective view showing the fin according to a
further preferred embodiment of the present invention;
[0024] FIG. 4A is an exploded perspective view showing a heat sink
according to a preferred embodiment of the present invention;
[0025] FIG. 4B is a schematic view showing a portion of the heat
sink according to the preferred embodiment of the present
invention;
[0026] FIG. 4C is an assembled perspective view showing the heat
sink according to the preferred embodiment of the present
invention;
[0027] FIG. 5A is an exploded perspective view showing a heat sink
according to another preferred embodiment of the present
invention;
[0028] FIG. 5B is a schematic view showing a portion of the heat
sink according to another preferred embodiment of the present
invention;
[0029] FIG. 5C is an assembled perspective view showing the heat
sink according to another preferred embodiment of the present
invention;
[0030] FIG. 6A is an exploded perspective view showing a heat sink
according to a further preferred embodiment of the present
invention;
[0031] FIG. 6B is a schematic view showing a portion of the heat
sink according to a further preferred embodiment of the present
invention; and
[0032] FIG. 6C is an assembled perspective view showing the heat
sink according to a further preferred embodiment of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0033] The above objectives and structural and functional features
of the present invention will be described in more detail with
reference to preferred embodiments thereof shown in the
accompanying drawings
[0034] Please refer to FIGS. 3A, 3B and 3C, which are views showing
the fin of a preferred embodiment of the present invention. The fin
40 comprises a body 41 having at least one through-hole. In the
present embodiment, the body 41 has two through-holes. As shown in
FIG. 3A, the body 41 has at least one first through-hole 42, at
least one second through-hole 43, at least one first protrusion 421
and at least one second protrusion 431. The first through-hole 42
is provided on the body 41. The first protrusion 421 protrudes from
the periphery of the first through-hole 42 towards one side of the
body 41 to form a first protruding end 422. At least one notch 423
is provided on the body 41 in communication with the first
through-hole 42. The first notch 423 has a first portion 4231
provided on the body 41. The first portion 4231 extends radially
from the periphery of the first through-hole 42 in a direction away
from the first through-hole 42.
[0035] The second through-hole 43 is also formed on the body 41.
The second protrusion 431 extends from the periphery of the second
through-hole 43 toward the same side or the other side of the body
41 to form a second protruding end 432 (in the present embodiment,
the second protrusion extends toward the other side of the body
41). At least one second notch 433 is formed on the body 41 in
communication with the second through-hole 43. The second notch 433
has a third portion 4331 provided on the body 41. The third portion
4331 extends radially from the periphery of the first through-hole
42 in a direction away from the second through-hole 43.
[0036] Please refer to FIG. 3B, which is a perspective view showing
the fin according to another preferred embodiment of the present
invention. The elements and connection between elements of the
present embodiment are substantially the same as those of the
previous embodiment. The difference between the present embodiment
and the previous embodiment lies in that: the first notch 423 has a
first portion 4231 and a second portion 4232. The first portion
4231 is provided on the body 41 and extends radially from the
periphery of the first through-hole 42 in a direction away from the
first through-hole 42. The second portion 4232 extends from the
first portion 4231 toward the first protrusion 421 without
penetrating the first protruding end 422. The second notch 433 has
a third portion 4331 and a fourth portion 4332. The third portion
4331 is provided on the body 41 and extends radially from the
periphery of the second through-hole 43 in a direction away from
the second through-hole 43. The fourth portion 4332 extends from
the third portion 4331 to the second protrusion 431 without
penetrating the second protruding end 432.
[0037] Please refer to FIG. 3C, which is a perspective view showing
the fin according to a further embodiment of the present invention.
The elements and connection between elements of the present
embodiment are substantially the same as those of the previous
embodiment. The difference between the present embodiment and the
previous embodiment lies in that: the second portion 4232 of the
first notch 423 extends from the first portion 4231 to the first
protrusion 421 and penetrates the first extending end 422. The
fourth portion 4332 of the second notch 433 extends from the third
portion 4331 toward the second protrusion 431 and penetrates the
second protruding end 432.
[0038] Please refer to FIGS. 4A to 4C. FIG. 4A is an exploded
perspective view showing a heat sink according to a preferred
embodiment of the present invention. FIG. 4B is a schematic view
showing a portion of the heat sink according to the preferred
embodiment of the present invention. FIG. 4C is an assembled
perspective view showing the heat sink according to the preferred
embodiment of the present invention. The present embodiment
provides a heat sink 50 having the fins 40. The heat sink 50
comprises a fin set 60, at least one first heat pipe 70 and at
least one second heat pipe 80. The fin set 60 has a plurality of
fins 40. Each of the fins 40 has a body 41. The body 41 has at
least one first through-hole 42, at least one second through-hole
43, at the one first protrusion 421 and at least one second
protrusion 431. The first protrusion 421 extends from the periphery
of the first through-hole 42 toward on side of the body 41 to form
a first protruding end 422 and at least one first notch 423 on the
body 41. The first notch 423 has a first portion extending radially
from the periphery of the first through-hole 42 in a direction away
from the first through-hole 42. The second protrusion 431 extends
from the periphery of the second through-hole 43 toward the other
side of the body 41 to form a second protruding end 432 and at
least one second notch 433 on the body 41. The second notch 433 has
a third portion extending radially from the periphery of the second
through-hole 43 in a direction away from the second through-hole
43.
[0039] The first heat pipe 70 has a first heat-releasing end 71 and
a first heat-absorbing end 72. The second heat pipe 80 has a second
heat-releasing end 81 and a second heat-absorbing end 82. The first
heat-releasing end 71 is inserted into the first through-hole 42.
The first heat-releasing end 71 penetrates through the first
protrusion 421 and the first protruding end 422 to connect the
first through-holes 42 of the respective fins 40. When the first
heat-releasing end 71 penetrates the first through-hole 42, the
first notch 423 allows the first protrusion 421 to expand, so that
the first protruding end 422 can abut against the first heat pipe
70. The second heat-releasing end 81 is inserted into the second
through-hole 43. The second heat-releasing end 81 penetrates
through the second protrusion 431 and the second protruding end 432
to connect the second through-holes 43 of the respective fins 40.
When the second heat-releasing end 81 penetrates the second
through-hole 43, the second notch 433 allows the second protrusion
431 to expand, so that the second protruding end 432 can abut
against the heat pipe. In this way, the first heat pipe 70
penetrates the first through-hole 42 and the second heat pipe 80
penetrates the second through-hole 43. The expansion of the first
notch 423 and the second notch 433 can increase the structural
strength of the fin 40 and protect the first heat pipe 70 and the
second heat pipe 80 from suffering damage or deformation due to the
rubbing of the fins 40 against the heat pipes. Also, the body 41 of
the fin 40 can be prevented from suffering damage or deformation
due to the penetration of the heat pipe. On the other hand, the
heat-conducting efficiency can be improved greatly.
[0040] Please refer to FIGS. 5A to 5C. FIG. 5A is an exploded
perspective view showing a heat sink according to another preferred
embodiment of the present invention. FIG. 5B is a schematic view
showing a portion of the heat sink according to another preferred
embodiment of the present invention. FIG. 5C is an assembled
perspective view showing the heat sink according to another
preferred embodiment of the present invention. The elements and
connection between elements of the present embodiment are
substantially the same as those of the previous embodiment. The
difference between the present embodiment and the previous
embodiment lies in that: the first notch 423 has a first portion
4231 and a second portion 4232. The second portion 4232 extends
from the first portion 4231 to the first protrusion 421 without
penetrating the first protruding end 422. The second notch 433 has
a third portion 4331 and a fourth portion 4332. The fourth portion
4332 extends from the third portion 4331 to the second protrusion
431 without penetrating the second protruding end 432. Thus, when
the first heat pipe 70 and the second heat pipe 80 penetrate the
first through-hole 42 and the second through-hole 43 respectively,
the first portion 4231 and the second portion 4232 of the first
notch 423 are expanded while the third portion 4331 and the fourth
portion 4332 of the second notch 433 are expanded. In this way, the
structural strength of the fin 40 can be increased. Further, the
first heat pipe 70 and the second heat pipe 80 can be protected
from suffer deformation or damage due to the rubbing of the fins 40
against the heat pipes. Also, the body 41 of the fin 40 can be
prevented from suffering deformation or damage due to the
penetration of the heat pipes. On the other hand, the
heat-conducting efficiency can be increased greatly.
[0041] Please refer to FIGS. 6A to 6C. FIG. 6A is an exploded
perspective view showing a heat sink according to a further
preferred embodiment of the present invention. FIG. 6B is a
schematic view showing a portion of the heat sink according to a
further preferred embodiment of the present invention. FIG. 6C is
an assembled perspective view showing the heat sink according to a
further preferred embodiment of the present invention. The elements
and connection between elements of the present embodiment are
substantially the same as those of the previous embodiment. The
difference between the present embodiment and the previous
embodiment lies in that: the second portion 4232 of the first notch
423 extends from the first portion 4231 to the first protrusion 421
and penetrates the first protruding end 422. The fourth portion
4332 of the second notch 433 extends from the third portion 4331 to
the second protrusion 431 and penetrates the second protruding end
432. Thus, when the first heat pipe 70 and the second heat pipe 80
penetrate the first through-hole 42 and the second through-hole 43
respectively, the first portion 4231 and the second portion 4232 of
the first notch 423 are expanded while the third portion 4331 and
the fourth portion 4332 of the second notch 433 are expanded. In
this way, the structural strength of the fin 40 can be increased.
Further, the first heat pipe 70 and the second heat pipe 80 can be
protected from suffer deformation or damage due to the rubbing of
the fins 40 against the heat pipes. On the other hand, the
heat-conducting efficiency can be increased greatly.
[0042] Although the present invention has been described with
reference to the foregoing preferred embodiments, it will be
understood that the invention is not limited to the details
thereof. Various equivalent variations and modifications can still
occur to those skilled in this art in view of the teachings of the
present invention. Thus, all such variations and equivalent
modifications are also embraced within the scope of the invention
as defined in the appended claims.
* * * * *