Counter-stream-mode oscillating-flow heat transport apparatus

• US 20090014162A1
• Filed: 09/08/2008
• Published: 01/15/2009
• Est. Priority Date: 08/07/2002
• Status: Active Grant

• Current Assignee: Akito Akimoto, Kenichi Nara, Kimio Kohara, Kouji Kishita, Makoto Sugiura, Nobunao Suzuki, Seiji Inoue, Shinichi Yatsuzuka, Yasumasa Hagiwara
• Original Assignee: Akito Akimoto, Kenichi Nara, Kimio Kohara, Kouji Kishita, Makoto Sugiura, Nobunao Suzuki, Seiji Inoue, Shinichi Yatsuzuka, Yasumasa Hagiwara
• Inventors: Akimoto, Akito, Sugiura, Makoto, Nara, Kenichi, Yatsuzuka, Shinichi, Suzuki, Nobunao, Kishita, Kouji, Kohara, Kimio, Inoue, Seiji, Hagiwara, Yasumasa
• Granted Patent: US 7,958,934 B2
• Time in Patent Office: Days
• US Class Current: 165/148
• CPC Class Codes: F28D 2021/0029 Heat sinks
• CPC Class Codes: F28F 13/10 by imparting a pulsating motion to the flow, e.g. by sonic vibration
• CPC Class Codes: F28F 2250/08 Fluid driving means, e.g. pumps, fans
• CPC Class Codes: F28F 2260/02 having microchannels
• CPC Class Codes: F28F 3/12 Elements constructed in the shape of a hollow panel, e.g. with channels F28D1/02, F28D1/03 take precedence
• CPC Class Codes: H01L 23/473 by flowing liquids H01L23/4332, H01L23/4338 take 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
• CPC Class Codes: H05K 7/20272 Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds

Abstract

A counter-stream-mode oscillating-flow heat transport apparatus improves heat transport capability by imparting oscillatory displacement to a fluid located near a heat-generating element such that the fluid is directed toward the heat-generating element. Turning portions of serpentine flow paths are disposed to face the heat-generating element. The flow paths are stacked in multiple layers in the direction from the heat-generating element to the flow paths, and a plurality of flow paths are disposed adjacent to the heat-generating element in the direction of fluid oscillation.

Claims

1. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation.

2. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, wherein

said flow paths are stacked in multiple layers in a direction from said heat source toward said flow paths.

3. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, wherein

a portion, of members constituting said flow paths, other than a bounding portion for defining a boundary of said adjacent flow paths is formed of a soft material.

4. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, wherein

said flow paths are constructed such that material plates are shaped by etching or stamping and stacked in layers in a direction of their thickness.

5. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, wherein

said flow paths are constructed by jointing a wavy material plate having holes formed thereon and plate-shaped material plates together.

6. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, wherein

a movable element to be displaced by an electromagnetic force and a piston for creating fluid oscillations are integrated into an oscillating device for inducing fluid oscillations.

7. A cooling device for cooling a heat-generating element using the counter-stream-mode oscillating-flow heat transport apparatus according to claim 1, further comprising:

a radiating fin for enhancing heat exchange between the fluid in said flow paths and an external fluid, wherein

an inside region the radiating fin is in communication with said flow paths.

8. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a heat reservoir for accumulating heat is disposed between a heat source and said flow path having a fluid therein for absorbing heat from said heat source.

9. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 8, wherein

said heat reservoir is formed of a material having a specific heat greater than or equal to that of a member constituting said flow paths.

10. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 8, wherein

said heat reservoir is constructed such that a portion of members constituting said flow paths, the portion facing said heat source, is thicker in thickness than a bounding portion for defining a boundary of said adjacent flow paths.

11. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

12. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation, and

oscillatory displacement is imparted to a fluid of the fluids in said flow paths, the fluid being located near said heat source, such that the fluid is directed toward said heat source.

13. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 12, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent.

14. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 13, wherein

a heat reservoir for accumulating heat is disposed between said heat source and said flow path having a fluid therein for absorbing heat from said heat source.

15. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 13, wherein

the plurality of the flow paths disposed adjacent to the heat source in a direction of fluid oscillation extend in multiple directions.

16. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 15, wherein

a heat reservoir for accumulating heat is disposed between said heat source and said flow path having a fluid therein for absorbing heat from said heat source,

said flow paths are formed of a plurality of flow paths extending in the multiple directions.

17. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 12, wherein

a heat reservoir for accumulating heat is disposed between said heat source and said flow path having a fluid therein for absorbing heat from said heat source.

18. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 12, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

19. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 12, wherein

a heat reservoir for accumulating heat is disposed between said heat source and said flow path having a fluid therein for absorbing heat from said heat source,

said flow paths are formed of a plurality of flow paths extending in multiple directions.

20. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a heat reservoir for accumulating heat is disposed between a heat source and said flow path having a fluid therein for absorbing heat from said heat source, and

oscillatory displacement is imparted to a fluid of the fluids in said flow paths, the fluid being located near said heat source, such that the fluid is directed toward said heat source.

21. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 20, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent.

22. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 21, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

23. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 20, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

24. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions, and

oscillatory displacement is imparted to a fluid of the fluids in said flow paths, the fluid being located near a heat source, such that the fluid is directed toward said heat source.

25. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 24, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent.

26. A counter-stream-mode oscillating-flow heat transport apparatus for inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent, and

a plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation.

27. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 26, wherein

a heat reservoir for accumulating heat is disposed between the heat source and said flow path having a fluid therein for absorbing heat from said heat source.

28. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 27, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

29. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 26, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

30. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 26, wherein

the bounding portion for defining the boundary of at least said adjacent flow paths of said flow paths is bent in two dimensions.

31. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent, and

a heat reservoir for accumulating heat is disposed between a heat source and said flow path having a fluid therein for absorbing heat from said heat source.

32. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 31, wherein

said flow paths are formed of a plurality of flow paths extending in multiple directions.

33. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 31, wherein

the bounding portion for defining the boundary of at least said adjacent flow paths of said flow paths is bent in three dimensions.

34. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a bounding portion for defining a boundary of at least said adjacent flow paths of said flow paths is bent, and

said flow paths are formed of a plurality of flow paths extending in multiple directions.

35. The counter-stream-mode oscillating-flow heat transport apparatus according to claim 34, wherein

the plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation

36. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation, and

a heat reservoir for accumulating heat is disposed between said heat source and said flow paths having a fluid therein for absorbing heat from said heat source.

37. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a plurality of said flow paths are disposed adjacent to a heat source in a direction of fluid oscillation, and

said flow paths are formed of a plurality of flow paths extending in multiple directions.

38. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a heat reservoir for accumulating heat is disposed between a heat source and said flow path having a fluid therein for absorbing heat from said heat source, and

said flow paths are formed of a plurality of flow paths extending in multiple directions.

39. A counter-stream-mode oscillating-flow heat transport apparatus defining flow paths and inducing oscillations of counterflow fluids in adjacent flow paths to thereby exchange heat between said adjacent flow paths and transport heat from a hot region to a cold region, wherein

a plurality of said flow paths are stacked in layers in a crossover direction relative to a plane in contact with a heat source.

40. A heat transport apparatus comprising:

a heat source having a generally planar plate surface;

a heat transport member defining therein a continuously provided heat-transport passage in which a fluid is sealed, the heat transport member having a heat exchange portion configured to absorb heat from the heat source; and

an oscillating member configured to oscillate the fluid in the heat-transport passage, wherein;

the heat exchange portion has a contact surface that contacts the planar plate surface of the heat source

the heat transport member has approximately a L shape in cross-section, which includes a perpendicular portion extending from the contact surface to be generally perpendicular to the planar plate surface, a parallel portion extending generally in parallel with the planar plate surface, and a bent portion bent from the perpendicular portion to the parallel portion; and

the heat-transport passage is U-turned at the heat exchange portion to have adjacent passage portions directly communicating with the heat exchange portion, and the adjacent passage portions are configured in contact with each other to perform a heat exchange therebetween.

41. The heat transport apparatus according to claim 40, wherein:

the heat-transport passage is U-turned at plural times to form a plurality of the heat exchange portions that are arranged in an arrangement direction parallel to the planar plate surface;

the adjacent passage portions are provided for each heat exchange portion; and

the passage portions of adjacent two of the heat exchange portions are configured in contact with each other to perform a heat exchange therebetween.

42. The heat transport apparatus according to claim 40, further comprising

a plurality of the heat transport members having L-shapes in cross section that have different dimensions in the perpendicular portions and the parallel portions and are stacked with each other in the L-shapes to define plural heat-transport passages, wherein:

the heat exchange portion of each of the heat transport members is configured to contact the planar plate surface at the contact surface; and

the passage portions of adjacent two of the heat-transport passages are configured in contact with each other.

43. The heat transport apparatus according to claim 40, further comprising

a plurality of the heat transport members having L-shapes in cross section that have different dimensions in the perpendicular portions and the parallel portions and are stacked with each other in the L-shapes to define plural heat-transport passages, wherein:

each of the heat transport members is configured to contact the planar plate surface at the contact surface;

the passage portions of adjacent two of the heat-transport passages are configured in contact with each other;

the heat-transport passage in each heat transport member is U-turned at plural times to form a plurality of the heat exchange portions that are arranged in an arrangement direction parallel to the planar plate surface;

the adjacent passage portions are provided for each heat exchange portion in each heat-transport passage; and

the passage portions of adjacent two of the heat exchange portions are configured in contact with each other.

44. The heat transport apparatus according to claim 40, wherein each of the passage portion has approximately a L shape.

45. An assembly comprising a pair of the heat transport apparatus according to claim 40, wherein the pair of the heat transport apparatus are line-symmetrical to each other.