Cold plate with vortex generator

• US 6,929,058 B2
• Filed: 11/13/2003
• Issued: 08/16/2005
• Est. Priority Date: 07/15/2003
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Liu, Min-Sheng, Wang, Chi-Chung, Liaw, Jane-Sunn, Chang, Yu-Juei
• Primary Examiner(s): Walberg, Teresa J.
• Application Number:
  US10/705,980
• Publication Number:
  US 20050011635A1
• Time in Patent Office: 642 Days
• Field of Search: 165 803- 805, 165/109.1, 165/104.33, 622/592
• US Class Current: 165/80.3
• CPC Class Codes: F28F 13/12 by creating turbulence, e.g. by stirring, by increasing the force of circulation F28F13/08 takes precedence
• 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

Abstract

The present invention discloses a cold plate with vortex generator for fluid going through defined an inlet and an outlet according to the flowing directions of the fluid, comprising: a base having a groove, one end of the groove is connected to the inlet and another end is connected to the outlet; a body installed on the base; at least one vortex generator mounted on a surface of the body toward the groove of the base, wherein two unparallel and symmetrical ribs form the vortex generator, one end of the unparallel ribs is a contraction end with a shorter gap, another end is an expansion end with a longer gap, coolant can pass through the gap between the ribs, due to each rib having a sharp portion, an appearance of the rib is a triangle geometric figure. The vortexes increase the liquid mixture and improve the heat transfer on the cold plate, but not cause much pressure drop, therefore the heat transfer of the entire system is more efficient.

Claims

1. A cold plate with an inlet and an outlet for a fluid comprising:

a) a base having a groove having first and second ends, the first end being connected to the inlet and the second end connected to the outlet;

b) a plate connected to the base covering the groove; and

c) at least one vortex generator located on a surface of the plate and aligning with and extending into the groove of the base, each of the at least one vortex generator having a first pair of unparallel and symmetrical ribs, each of the first pair of unparallel and symmetrical ribs having;

i) parallel front and rear surfaces extending perpendicular to the surface of the plate;

ii) first, second, and third edges located between the parallel front and rear surfaces, the first edge being connected to the plate; and

iii) a sharp portion located between the second and third edges and extending upwardly toward the base,

first ends of the first pair of unparallel and symmetrical ribs are positioned a contraction distance apart, and second ends of the first pair of unparallel and symmetrical ribs are positioned a expansion distance apart, the fluid passing between the first pair of unparallel and symmetrical ribs, the contraction distance is smaller than the expansion distance.

2. The cold plate according to claim 1, wherein each of the second and the third edges have equal lengths, and each of the parallel front and rear surfaces of the two unparallel and symmetrical ribs are isosceles triangles.

3. The cold plate according to claim 1, wherein one of the second and the third edges is positioned perpendicular to the surface of the plate and each of the parallel front and rear surfaces of the two unparallel and symmetrical ribs are right triangles.

4. The cold plate according to claim 3, wherein the sharp portion is located on the first end of each of the two unparallel and symmetrical ribs.

5. The cold plate according to claim 3, wherein the sharp portion is located on the second end of each of the two unparallel and symmetrical ribs.

6. The cold plate according to claim 1, wherein the inlet and the outlet are located on the plate, the inlet is connected to an input tube receiving a fluid, the outlet is connected to an output tube discharging the fluid.

7. The cold plate according to claim 1, wherein each of the at least one vortex generator includes a second pair of unparallel and symmetrical ribs, first ends of the second pair of unparallel and symmetrical ribs are positioned the expansion distance apart, and second ends of the second pair of unparallel and symmetrical ribs are positioned the contraction distance apart, the second ends of the first pair of unparallel and symmetrical ribs are positioned adjacent to the first ends of the second pair of unparallel and symmetrical ribs.

8. The cold plate according to claim 1, wherein the base and the plate are integrally formed.