U.S. patent application number 12/975379 was filed with the patent office on 2012-05-17 for radial heat sink with heat pipe set therein.
Invention is credited to Tsung-Hsien Huang.
Application Number | 20120118536 12/975379 |
Document ID | / |
Family ID | 43993234 |
Filed Date | 2012-05-17 |
United States Patent
Application |
20120118536 |
Kind Code |
A1 |
Huang; Tsung-Hsien |
May 17, 2012 |
RADIAL HEAT SINK WITH HEAT PIPE SET THEREIN
Abstract
A radial heat sink includes a hollow core base with mounting
grooves axially located on the inside wall thereof and a locating
groove located on an end wall at one end thereof, radiation fins
arranged around the periphery of the hollow core base, and heat
pipes inserted through the end wall of the hollow core base and
press-fitted into the mounting grooves and the locating groove and
kept in flush with the end wall of the hollow core base.
Inventors: |
Huang; Tsung-Hsien; (I-Lan
Hsien, TW) |
Family ID: |
43993234 |
Appl. No.: |
12/975379 |
Filed: |
December 22, 2010 |
Current U.S.
Class: |
165/104.26 |
Current CPC
Class: |
H01L 2924/0002 20130101;
H05K 7/20 20130101; F21V 29/773 20150115; F21V 29/717 20150115;
H01L 2924/0002 20130101; H01L 2924/00 20130101; H01L 23/427
20130101 |
Class at
Publication: |
165/104.26 |
International
Class: |
F28D 15/04 20060101
F28D015/04 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 12, 2010 |
TW |
099138975 |
Claims
1. A radial heat sink, comprising: a hollow core base having a top
end and a bottom end and at least one locating groove located on
said bottom end; a plurality of radiation fins arranged around the
periphery of said hollow core base; and at least one heat pipe
mounted in said hollow core base, each said heat pipe having at
least one part thereof press-fitted in one said locating groove and
kept in flush with an outer surface of the bottom end of said
hollow core base.
2. The radial heat sink as claimed in claim 1, wherein said hollow
core base comprises at least one mounting groove axially extending
along an inside wall thereof for receiving said at least one heat
pipe.
3. The radial heat sink as claimed in claim 2, wherein said hollow
core base comprises an end wall located on said bottom end, and at
least one through hole cut through said end wall in communication
with said at least one locating groove for the passing of said at
least one heat pipe.
4. The radial heat sink as claimed in claim 3, wherein said at
least one locating groove is located on an outer surface of said
end wall.
5. The radial heat sink as claimed in claim 4, wherein said hollow
core base further comprises a plurality of mounting holes cut
through said end wall for mounting.
6. The radial heat sink as claimed in claim 4, wherein each said
heat pipe has a flat outer surface kept in flush with the outer
surface of said end wall.
7. The radial heat sink as claimed in claim 1, wherein each said
heat pipe has a U-shaped profile.
8. The radial heat sink as claimed in claim 1, wherein each said
heat pipe has an L-shaped profile.
9. The radial heat sink as claimed in claim 1, wherein each said
heat pipe is a straight heat pipe.
10. The radial heat sink as claimed in claim 1, wherein each said
heat pipe has an arched profile.
11. The radial heat sink as claimed in claim 1, wherein said hollow
core base further comprises at least one rib extending along at
least one of two opposite lateral sides of each said locating
groove, each said rib being deformable to clamp one said heat pipe
in one said locating groove.
12. The radial heat sink as claimed in claim 2, wherein said hollow
core base further comprises a plurality of ribs extending along at
least one of two opposite lateral sides of each said locating
groove and each said mounting groove, each said rib being
deformable to clamp one said heat pipe in one said locating groove
or one said mounting groove.
13. The radial heat sink as claimed in claim 3, further comprising
annular packing plate fastened to the bottom end of said core base
and stopped against a bottom edge of each of said radiation fins
and kept in flush with the outer surface of said end wall and a
flat outer surface of each said heat pipe.
Description
BACKGROUND OF THE INVENTION
[0001] (a) Field of the Invention
[0002] The present invention relates to radial heat sink technology
and more particularly to a radial heat sink that has at least one
heat pipe set therein and is practical for use with a CPU, an LED
lamp or any other electronic component that emits heat during its
operation.
[0003] (b) Description of the Prior Art
[0004] A conventional radial heat sink is known comprising a
cylindrical base and a plurality of radiation fins radially
arranged around the periphery of the cylindrical base. The
cylindrical base can be a solid or hollow member, and shaped like a
round tube, rectangular tube or polygonal tube. This design of
radial heat sink is adapted for use with a CPU, an LED lamp or any
other electronic component that emits heat during its operation.
However, simply using the cylindrical base to transfer heat from
the attached heat-emitting device to the radiation fins cannot
achieve quick dissipation of heat.
SUMMARY OF THE INVENTION
[0005] The present invention has been accomplished under the
circumstances in view. It is one object of the present invention to
provide a radial heat sink that has at least one heat pipe set
therein and is practical for use with a CPU, an LED lamp or any
other heat-emitting electronic component for quick dissipation of
waste heat.
[0006] To achieve this and other objects of the present invention,
a radial heat sink comprises a hollow core base with mounting
grooves axially located on the inside wall thereof and a locating
groove located on an end wall at one end thereof, radiation fins
arranged around the periphery of the hollow core base, and heat
pipes inserted through the end wall of the hollow core base and
press-fitted into the mounting grooves and the locating groove and
kept in flush with the end wall of the hollow core base.
[0007] Further, the hollow core base comprises at least one
mounting groove axially extending along an inside wall thereof for
receiving the at least one heat pipe, an end wall located on the
bottom end and carrying the at least one locating groove, and at
least one through hole cut through the end wall in communication
with the at least one locating groove for the passing of the at
least one heat pipe. Further, each heat pipe has a flat outer
surface kept in flush with the outer surface of the end wall.
[0008] Further, the heat pipe can be a U-shaped heat pipe, L-shaped
heat pipe, straight heat pipe or arched heat pipe.
[0009] The hollow core base further comprises a plurality of ribs
respectively extending along at least one of two opposite lateral
sides of each of the at least one locating groove and at least one
mounting groove. The ribs are deformed to clamp the at least one
heat pipe in the at least one locating groove and/or the at least
one mounting groove.
[0010] Further, an annular packing plate may be fastened to the
bottom end of the core base and stopped against the bottom edge of
each radiation fin and kept in flush with the outer surface of the
end wall and the flat outer surface of each heat pipe.
[0011] Further, the quantity, configuration or distribution
arrangement of the radiation fins can be changed according to
different requirements. There are no limitations with respect to
the connection between the radiation fins and the core base. The
radiation fins can be formed integral with the peripheral wall of
the core base. Alternatively, the radiation fins can be fastened to
the peripheral wall of the core base by insertion or by
soldering.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] FIG. 1 is an oblique top elevational view of a radial heat
sink in accordance with a first embodiment of the present
invention.
[0013] FIG. 2 is an oblique bottom elevational view of the radial
heat sink in accordance with the first embodiment of the present
invention.
[0014] FIG. 3 is an exploded view of the radial heat sink in
accordance with the first embodiment of the present invention.
[0015] FIG. 4 is a top view of the radial heat sink in accordance
with the first embodiment of the present invention.
[0016] FIG. 5 is a sectional side view of the radial heat sink in
accordance with the first embodiment of the present invention.
[0017] FIG. 6 is a sectional side view of the core base of the
radial heat sink in accordance with the first embodiment of the
present invention.
[0018] FIG. 7 is a schematic drawing illustrating a rib deformation
operation according to the present invention.
[0019] FIG. 8 corresponds to FIG. 7, illustrating the rib deformed
and clamped on the heat pipe.
[0020] FIG. 9 is another sectional side view of the radial heat
sink in accordance with the first embodiment of the present
invention.
[0021] FIG. 10 is an oblique top elevational view of a radial heat
sink in accordance with a second embodiment of the present
invention, illustrating an annular packing plate fastened to the
bottom end of the core base and stopped against the bottom edge of
each radiation fin.
[0022] FIG. 11 is a sectional side view of FIG. 10.
[0023] FIG. 12 is an oblique top elevational view of a radial heat
sink in accordance with a third embodiment of the present
invention.
[0024] FIG. 13 is a sectional side view of FIG. 12.
[0025] FIG. 14 is an oblique top elevational view of a radial heat
sink in accordance with a fourth embodiment of the present
invention.
[0026] FIG. 15 is a sectional side view of FIG. 14.
[0027] FIG. 16 is a bottom view of a radial heat sink in accordance
with a fifth embodiment of the present invention.
[0028] FIG. 17 is a sectional view taken along line A-A of FIG.
16.
[0029] FIG. 18 is a bottom view of a radial heat sink in accordance
with a sixth embodiment of the present invention.
[0030] FIG. 19 is a sectional view taken along line A-A of FIG.
18.
[0031] FIG. 20 is a bottom view of a radial heat sink in accordance
with a seventh embodiment of the present invention.
[0032] FIG. 21 is a sectional view taken along line A-A of FIG.
20.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0033] Referring to FIGS. 1-5, a radial heat sink in accordance
with the present invention is shown comprising a core base 1, a
plurality of radiation fins 2, and at least one, for example
U-shaped, heat pipe 3.
[0034] The core base 1 is a tubular metallic member. The radiation
fins 2 are equiangularly fastened to the periphery of the core base
1. The U-shaped heat pipe 3 is mounted inside the core base 1. The
core base 1 has mounting grooves 11 located on the inside wall
thereof for receiving the U-shaped heat pipe 3. When the two distal
ends of the U-shaped heat pipe 3 are respectively press-fitted into
one respective mounting groove 11 in the core base 1, the middle
part 31 of the U-shaped heat pipe 3 is exposed to the outside of
the core base 1 for direct contact with the heat-emitting device
(CPU, LED lamp, or any other electronic component part that emits
heat during its operation) for quick dissipation of waste heat from
the heat-emitting device.
[0035] As shown in FIG. 6, the mounting grooves 11 extend axially
along the inside wall of the core base 1. The core base 1 has its
one end opened (see FIG. 3), and its other end closed, i.e.,
provided with an end wall 12 (see FIG. 4). The core base 1 further
has a plurality of mounting holes 121 cut through the end wall 12,
and two through holes 13 cut through the end wall 12 and a locating
groove 14 located on the outer surface of the end wall 12 and
extending between the two through holes 13. The two distal ends of
the U-shaped heat pipe 3 are respectively inserted through the two
through holes 13 into the respective mounting grooves 11 in the
core base 1 to let the middle part 31 be press-fitted into the
locating groove 14. Further, the middle part 31 of the U-shaped
heat pipe 3 has a flat outer surface kept in flush with the outer
surface of the end wall 12 (see FIG. 5).
[0036] The design of the aforesaid two through holes 13 is adapted
for the mounting of the U-shaped heat pipe 3. According to the
embodiment shown in FIGS. 16 and 17, an L-shaped heat pipe is used
wherein the vertical end of the L-shaped heat pipe is inserted
through one through hole 13 into one mounting groove 11, and the
horizontal end of the L-shaped heat pipe is press-fitted into the
locating groove 14 and kept in flush with the outer surface of the
end wall 12. To fit this application example, it simply needs to
make one single through hole 13 for the mounting of the L-shaped
heat pipe.
[0037] Further, the core base 1 can be made having a rib 111
extending along each of two opposite sides of each of the mounting
grooves 11 and the locating groove 14 (see FIG. 1, FIG. 3 or FIG.
7). After the heat pipe 3 is press-fitted into the mounting grooves
11 and the locating groove 14, the ribs 111 are deformed to clamp
the heat pipe 3, enhancing the tightness of the connection between
the core base 1 and the heat pipe 3, and therefore no further
soldering procedure is necessary.
[0038] Similar to conventional techniques, the quantity,
configuration or distribution arrangement of the radiation fins 2
can be changed according to different requirements. For example,
the radiation fins 2 can be arranged around the whole or a part of
the periphery of the core base 1. There are no limitations with
respect to the connection between the radiation fins 2 and the core
base 1. The radiation fins 2 can be formed integral with the
peripheral wall of the core base 1. Alternatively, the radiation
fins 2 can be fastened to the peripheral wall of the core base 1 by
insertion or by soldering.
[0039] As shown in FIG. 7, the ribs 111 protrude from the inside
wall of the core base 1 and respectively extend along the two
opposite lateral sides of the mounting groove 11. By means of using
stamping dies 5 to impart a pressure to each rib 111 toward the
mounting groove 11 (see the direction of the arrowhead sign), the
ribs 111 are deformed (see FIG. 8) and clamped on the heat pipe 3,
securing the heat pipe 3 tightly to the mounting groove 11 (see
FIG. 8 and FIG. 9).
[0040] Further, as shown in FIG. 10, an annular packing plate 4 can
be fastened to the bottom side of the core base 1 and stopped
against the bottom edge of each of the radiation fins 2. After
installation, the bottom surface of the annular packing plate 4 is
kept in flush with the outer surface of the end wall 12 and the
flat outer surface of the middle part 31 of the heat pipe 3 (see
FIG. 11).
[0041] According to the design of the present invention, the number
of the at least one heat pipe 3 can be increased or reduced to fit
different application requirements. As shown in FIG. 12 and FIG.
13, the core base 1 has multiple mounting grooves 11 and locating
grooves 14, and three U-shaped heat pipes 3 are respectively
press-fitted into the mounting grooves 11 and/or the locating
grooves 14. Further, L-shaped heat pipes or heat pipes of other
configurations may be used to substitute for the U-shaped heat
pipes 3.
[0042] Further, the core base 1 can be made in a cylindrical shape,
a rectangular shape, a polygonal shape, or any of a variety of
other configurations, with at least one heat pipe set therein. The
mounting grooves 11 are configured to fit the heat pipes. FIGS. 14
and 15 illustrate the use of a rectangular core base 1. Except the
configuration, the structural characteristics of the core base 1,
the radiation fins 2 and the heat pipes 3, the design of the ribs
111 and the arrangement of the middle part 31 of the heat pipe 3 in
flush with the outer surface of the end wall 12 remain
unchanged.
[0043] FIGS. 16 and 17 illustrate the use of an L-shaped heat pipe
3a. According to this embodiment, the core base 1 has only one
single through hole 13 for the insertion of the L-shaped heat pipe
3a so that the vertical end and horizontal end of the L-shaped heat
pipe 3a can be respectively press-fitted into the mounting groove
11 and the locating groove 14.
[0044] FIGS. 18 and 19 illustrate the use of a straight heat pipe
3b. According to this embodiment, the straight heat pipe 3b is
press-fitted into the locating groove 14 of the core base 1 and
kept in flush with the outer surface of the end wall 12 of the core
base 1. Therefore, the core base 1 according to this embodiment
does not provide the aforesaid mounting grooves 11 or through holes
13. Further, the core base 1 can be made having multiple locating
grooves 14 for the mounting of multiple straight heat pipes 3b.
[0045] FIGS. 20 and 21 illustrate the use of an arched heat pipe
3c. According to this embodiment, the arched heat pipe 3b is
press-fitted into the arched locating groove 14c on the end wall 12
of the core base 1 and kept in flush with the outer surface of the
end wall 12 of the core base 1. Therefore, the core base 1
according to this embodiment does not provide the aforesaid
mounting grooves 11 or through holes 13. Further, the core base 1
can be made having multiple arched locating grooves 14c for the
mounting of multiple arched heat pipes 3b.
[0046] Although particular embodiments of the invention have been
described in detail for purposes of illustration, various
modifications and enhancements may be made without departing from
the spirit and scope of the invention. Accordingly, the invention
is not to be limited except as by the appended claims.
* * * * *