Installation fins and installation structure of fins and a heat sink with moving fins inserted between cooling fins

• US 8,201,616 B2
• Filed: 08/04/2007
• Issued: 06/19/2012
• Est. Priority Date: 08/10/2006
• Status: Expired due to Fees

• Current Assignee: Korea Advanced Institute of Science and Technology
• Original Assignee: Korea Advanced Institute of Science and Technology
• Inventors: Kim, Dong Kwon, Kim, Tae Young, Kim, Sung Jin
• Primary Examiner(s): Leo, Leonard R
• Application Number:
  US12/294,104
• Publication Number:
  US 20090205807A1
• Time in Patent Office: 1,781 Days
• Field of Search: 165/86, 165/80.3, 165/94, 361/704
• US Class Current: 165/80.3
• CPC Class Codes: F28D 2021/0029 Heat sinks
• CPC Class Codes: F28F 3/02 Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations F28F3/08 takes precedence
• CPC Class Codes: F28F 5/00 Elements specially adapted for movement
• CPC Class Codes: H01L 23/467 by flowing gases, e.g. air H01L23/473 takes precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00

Abstract

A radiator fin of a heat sink has a shape of a portion of a circle with a small radius which is not overlapped with a circle with a large radius when two circles with different radiuses are overlapped with each other such that centers of the two circles are in a single circle, as a cross sectional shape. An arrangement of radiator fins of a heat sink on a radiator plate, includes at least two radiator fins provides to at least one radiator plate such that centers of inner and outer arcs of circles forming the radiator fins are on a reference line, and an outer arc of one of two adjacent radiator fins moves within a track of an inner arc of the other radiator fin or an inner arc of one radiator fin moves out of a track of an outer arc of the other radiator fin.

Claims

1. A heat sink having a movable structure inserted into a space between radiator fins, comprising:

the radiator fins;

a radiator plate;

a fixed heat sink including a fixed panel attached to a substrate in which several fixed radiator fins are arranged by a predetermined interval and a heating body for generating heat is installed, and to radiate heat;

a rotation heat sink including a rotation panel in which several curved plate type rotating radiator fins are provided between respective two of the several adjacent fixed radiator fins;

a rotation unit including linkages fixed to sides of the rotation panel and rotation shafts coupled with the linkages to rotate the linkages; and

a driving device including a motor for transmitting a rotation force to the rotation shafts such that air is introduced and discharged between and the fixed radiator fins and the rotating radiator fins due to rotations of the rotation unit and the rotation heat sink.

2. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the rotating radiator fins have the same shape as that of the fixed radiator fins.

3. The heat sink having a movable structure inserted into a space between radiator fins according to claim 2, wherein the rotation heat sink is configured such that several rotating radiator fins are integrally formed with the rotation panel.

4. The heat sink having a movable structure inserted into a space between radiator fins according to claim 2, wherein the fixed heat sink is configured such that several fixed radiator fins are integrally formed with the fixed panel.

5. The heat sink having a movable structure inserted into a space between radiator fins according to claim 2, wherein the fixed radiator fins and the fixed panel of the fixed heat sink are made of aluminum or copper.

6. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the rotation shafts are positioned on the centers of rotation on the reference line and comprise grooves formed in the upper ends, and the heat sink further comprising a rotation unit which is integrally formed with the rotation shafts spaces apart from centers of the grooves by an eccentric distance and the rotation panel or provided to the rotation panel, and which comprises fixed protrusions coupled with the grooves so that the driving device moves the rotation heat sink coupled with the linkages due to rotation force generated by the driving device.

7. The heat sink having a movable structure inserted into a space between radiator fins according to claim 6, wherein the rotation heat sink is configured such that several rotating radiator fins are integrally formed with the rotation panel.

8. The heat sink having a movable structure inserted into a space between radiator fins according to claim 6, wherein the fixed heat sink is configured such that several fixed radiator fins are integrally formed with the fixed panel.

9. The heat sink having a movable structure inserted into a space between radiator fins according to claim 6, wherein the fixed radiator fins and the fixed panel of the fixed heat sink are made of aluminum or copper.

10. The heat sink having a movable structure inserted into a space between radiator fins according to claim 6, wherein the eccentric distance is a half of a movement distance in which a thickness of the rotating radiator fins is subtracted from a fin distance between two adjacent fixed radiator fins.

11. The heat sink having a movable structure inserted into a space between radiator fins according to claim 10, wherein the rotation heat sink is configured such that several rotating radiator fins are integrally formed with the rotation panel.

12. The heat sink having a movable structure inserted into a space between radiator fins according to claim 10, wherein the fixed heat sink is configured such that several fixed radiator fins are integrally formed with the fixed panel.

13. The heat sink having a movable structure inserted into a space between radiator fins according to claim 10, wherein the fixed radiator fins and the fixed panel of the fixed heat sink are made of aluminum or copper.

14. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the driving device comprises:

the motor provided to the substrate;

several pulleys connected to at least two rotation shafts; and

a belt to transmit a driving force of the motor as a rotation force.

15. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the rotation heat sink is configured such that several rotating radiator fins are integrally formed with the rotation panel.

16. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the fixed heat sink is configured such that several fixed radiator fins are integrally formed with the fixed panel.

17. The heat sink having a movable structure inserted into a space between radiator fins according to claim 1, wherein the fixed radiator fins and the fixed panel of the fixed heat sink are made of aluminum or copper.