Free Services  

  • MONITOR KEYWORDS
  • Enter keywords & we'll notify you when a new patent matches your request (weekly update).

  • ORGANIZER
  • Save & organize patents so you can view them later.

  • ARCHIVE
  • View the last few months of your Keyword emails.

  • COMPANY DIRECTORY
  • Patents sorted by company.

Follow us on Twitter
twitter icon@FreshPatents

Browse patents:
NextPrevious

Heat pipe-attached heat sink




Title: Heat pipe-attached heat sink.
Abstract: A heat pipe-attached heat sink includes a bottom block having an opening and locating grooves arranged on the flat bottom wall thereof, a radiation fin module consisting of first radiation fins and second radiation fins, each first radiation fin having extension abutment strip that has a flat bottom abutment edge and locating grooves located on the flat bottom abutment edge and dividing the flat bottom abutment edge into a plurality of spacer ribs, the extension abutment strips of the first radiation being tightly plugged into the opening of the bottom block, and heat pipes respectively press-fitted into the locating grooves of the bottom block and the locating grooves of the first radiation fins of the radiation fin module, each heat pipe having a planar peripheral side exposed outside the radiation fin module and the bottom block and kept in flush with the flat bottom abutment edge of the extension abutment strips for direct contact with an external heat source. ...


USPTO Applicaton #: #20120305221
Inventors: Tsung-hsien Huang


The Patent Description & Claims data below is from USPTO Patent Application 20120305221, Heat pipe-attached heat sink.

BACKGROUND

- Top of Page


OF THE INVENTION

(a) Field of the Invention

The present invention relates to heat sink technology and more particularly, to a heat pipe-attached heat sink, which keeps the attached heat pipes in flush with a flat bottom abutment edge of an extension abutment strip of each radiation fin for direct contact with a heat source for quick transfer of waste head.

(b) Description of the Prior Art

A conventional heat pipe attached heat sink is known comprising: a radiation fin module, one of a number of heat pipes and a metal bottom block. During application, the bottom block is kept in direct contact with the heat source, enabling waste heat to be transferred by the bottom block to the radiation fins of the radiation fin module through the heat pipe(s) for quick dissipation. This design of heat sink utilizes the bottom block, the heat pipe(s) and the radiation fin module to transfer heat in proper order. However, this heat transfer method has a low heat dissipation speed and performance. There is known another prior art heat sink design, which eliminates the use of a metal bottom block and has the heat-absorbing end of each heat pipe be directly press-fitted into a respective mounting groove on each of a number of radiation fins. After connection between heat pipes and radiation fins, heat pipes are kept flattened and kept in parallel for direct contact with the heat source for quick transfer of waste heat from the heat source to the radiation fins for quick dissipation. According to this design, the radiation fins are not directly kept in contact with the surface of the heat source for direct dissipation of waste heat.

SUMMARY

- Top of Page


OF THE INVENTION

The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a heat pipe-attached heat sink, which eliminates the drawbacks of the aforesaid various prior art designs.

To achieve this and other objects of the present invention, a heat pipe-attached heat sink comprises a bottom block, a radiation fin module and one or a number of heat pipes. The bottom block comprises an opening cut through opposing flat top and bottom walls thereof and a plurality of locating grooves arranged on the flat bottom wall and extended to the opening. The radiation fin module is fastened to the bottom block, comprising a plurality of first radiation fins and second radiation fins arranged in a stack. Each first radiation fin comprises an extension abutment strip. The extension abutment strip comprises a flat bottom abutment edge, and a plurality of locating grooves located on the flat bottom abutment edge and dividing the flat bottom abutment edge into a plurality of spacer ribs, Further, the extension abutment strips of the first radiation fins form a protruding block that is tightly plugged into the opening of the bottom block. The heat pipes are respectively press-fitted into the locating grooves of the bottom block and the locating grooves of the extension abutment strips of the first radiation fins of the radiation fin module. Each heat pipe comprises a planar peripheral side exposed outside the radiation fin module and the bottom block for direct contact with an external heat source. Thus, the flat bottom abutment edge of the extension abutment strip of each first radiation fin, the flat bottom wall of the bottom block and the planar peripheral side of each heat pipe form a coplane for direct contact with the external heat source for quick dissipation of waste heat from the external heat source.

Further, the extension abutment strip of each first radiation fin comprises at least one locating rib formed in each locating groove at the flat bottom abutment edge thereof for engagement with the periphery of the heat pipes. Further, the bottom block comprises at least one locating rib formed in each locating groove at the flat bottom wall thereof for engagement with the periphery of the heat pipes.

Further, the bottom block further comprises a plurality of spacer ribs formed of the flat bottom wall thereof and respectively disposed between each two adjacent ones of the locating grooves of the bottom block corresponding to the spacer ribs of the extension abutment strips of the first radiation fins of the radiation fin module.

Further, the spacer ribs of the first radiation fins have a height smaller than the depth of the locating grooves of the first radiation fins. Further, the spacer ribs of said bottom block have a height smaller than the depth of the locating grooves of said bottom block.

Further, each heat pipe comprises a flat protruding peripheral portion protruding over the flat bottom wall of said bottom block; the flat bottom abutment edges of the extension abutment strips of said first radiation fins of said radiation fin module protrude over the flat bottom wall of said bottom block and are kept in flush with the flat protruding peripheral portions of said heat pipes.

Further, the bottom block comprises a plurality of mounting holes for mounting.

Further, the bottom block can be made having a plurality of retaining holes for receiving the first radiation fins and second radiation fins of the radiation fin module tightly.

In an alternate form of the present invention, the heat pipe-attached heat sink further comprises a second radiation fin module. In this case, the heat pipes each have one end thereof respectively extended out of the bottom block and fastened to the second radiation fin module.

Further, the first radiation fins and second radiation fins of the radiation fin module can be made having a plurality of through holes. In this case, the heat pipes are U-shaped pipes each having one end thereof fastened to the locating grooves of the first radiation fins and the locating grooves of the bottom block and an opposite end thereof respectively and tightly press-fitted into the through holes of the first radiation fins and second radiation fins of the radiation fin module.

In still another alternate form of the present invention, the heat pipes each have a heat-receiving end press-fitted into the locating grooves of the first radiation fins and the locating grooves of the bottom block and a flat protruding peripheral portion located on the heat-receiving end and protruding over the flat bottom wall of the bottom block at a predetermined distance.

In still another alternate form of the present invention, the bottom block comprises a flat protrusion protruded from the flat bottom wall thereof and abutted to the opening. Further, the locating grooves of the bottom block are located on the flat protrusion. In this case, the locating grooves of the first radiation fins of the radiation fin module and the locating grooves of the bottom block are disposed at different elevations.

Further, the flat protrusion of the bottom block defines a flat contact surface corresponding to the flat bottom abutment edges of the extension abutment strips of the first radiation fins of the radiation fin module. Further, the flat contact surface of the flat protrusion of the bottom block and the flat bottom abutment edges of the extension abutment strips of the first radiation fins of the radiation fin module are disposed at different elevations.

BRIEF DESCRIPTION OF THE DRAWINGS

- Top of Page


FIG. 1 is an exploded view of a heat pipe-attached heat sink in accordance with a first embodiment of the present invention.

FIG. 2 is an elevational assembly view of the heat pipe-attached heat sink in accordance with the first embodiment of the present invention.

FIG. 3 is a top view of the heat pipe-attached heat sink in accordance with the first embodiment of the present invention.

FIG. 4 is a sectional view taken along line A-A of FIG. 1.

FIG. 5 is an elevational view of one radiation fin for the heat pipe-attached heat sink in accordance with the first embodiment of the present invention.

FIG. 6 is a top view of a heat pipe-attached heat sink in accordance with a second embodiment of the present invention.

FIG. 7 is a sectional view taken along line A-A of FIG. 6.

FIG. 8 is an elevational assembly view of a heat pipe-attached heat sink in accordance with a third embodiment of the present invention.

FIG. 9 is a side view of the heat pipe-attached heat sink in accordance with the third embodiment of the present invention.

FIG. 10 is an elevational view of a heat pipe-attached heat sink in accordance with a fourth embodiment of the present invention.

FIG. 11 is a side view of the heat pipe-attached heat sink in accordance with the fourth embodiment of the present invention.

FIG. 12 is an elevational view of a heat pipe-attached heat sink in accordance with a fifth embodiment of the present invention.

FIG. 13 is a side view of the heat pipe-attached heat sink in accordance with the fifth embodiment of the present invention.

FIG. 14 is an elevational view of a heat pipe-attached heat sink in accordance with a sixth embodiment of the present invention.

FIG. 15 is a side view of the heat pipe-attached heat sink in accordance with the sixth embodiment of the present invention.




← Previous       Next → Advertise on FreshPatents.com - Rates & Info


You can also Monitor Keywords and Search for tracking patents relating to this Heat pipe-attached heat sink patent application.
###
monitor keywords

Keyword Monitor How KEYWORD MONITOR works... a FREE service from FreshPatents
1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored.
3. Each week you receive an email with patent applications related to your keywords.  
Start now! - Receive info on patent apps like Heat pipe-attached heat sink or other areas of interest.
###


Previous Patent Application:
Exhaust gas heat exchanger
Next Patent Application:
Heat spreader structure and manufacturing method thereof
Industry Class:
Heat exchange
Thank you for viewing the Heat pipe-attached heat sink patent info.
- - -

Results in 0.27642 seconds


Other interesting Freshpatents.com categories:
Tyco , Unilever , 3m

###

Data source: patent applications published in the public domain by the United States Patent and Trademark Office (USPTO). Information published here is for research/educational purposes only. FreshPatents is not affiliated with the USPTO, assignee companies, inventors, law firms or other assignees. Patent applications, documents and images may contain trademarks of the respective companies/authors. FreshPatents is not responsible for the accuracy, validity or otherwise contents of these public document patent application filings. When possible a complete PDF is provided, however, in some cases the presented document/images is an abstract or sampling of the full patent application for display purposes. FreshPatents.com Terms/Support
-g2-0.1911

66.232.115.224
Next →
← Previous

stats Patent Info
Application #
US 20120305221 A1
Publish Date
12/06/2012
Document #
File Date
12/31/1969
USPTO Class
Other USPTO Classes
International Class
/
Drawings
0


Heat Pipes

Follow us on Twitter
twitter icon@FreshPatents



Heat Exchange   Intermediate Fluent Heat Exchange Material Receiving And Discharging Heat   Liquid Fluent Heat Exchange Material   Utilizing Change Of State   Utilizing Capillary Attraction  

Browse patents:
Next →
← Previous
20121206|20120305221|heat pipe-attached heat sink|A heat pipe-attached heat sink includes a bottom block having an opening and locating grooves arranged on the flat bottom wall thereof, a radiation fin module consisting of first radiation fins and second radiation fins, each first radiation fin having extension abutment strip that has a flat bottom abutment edge |