RADIAL HEAT SINK WITH HEAT PIPE SET THEREIN
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.
(a) Field of the Invention
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.
(b) Description of the Prior Art
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 INVENTIONThe 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.
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.
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.
Further, the heat pipe can be a U-shaped heat pipe, L-shaped heat pipe, straight heat pipe or arched heat pipe.
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.
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.
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.
Referring to
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.
As shown in
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
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
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.
As shown in
Further, as shown in
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
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.
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.
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.
Type: Application
Filed: Dec 22, 2010
Publication Date: May 17, 2012
Inventor: Tsung-Hsien Huang (I-Lan Hsien)
Application Number: 12/975,379
International Classification: F28D 15/04 (20060101);