Heat Sink Comprising a Tube Through Which Cooling Medium Flows

• US 20100155040A1
• Filed: 12/04/2006
• Published: 06/24/2010
• Est. Priority Date: 02/21/2006
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Hoffmann, Ingolf, Knauer, Hans, Reischer, Wilhelm
• Application Number:
  US12/223,993
• Publication Number:
  US 20100155040A1
• Time in Patent Office: Days
• US Class Current: 165/180
• CPC Class Codes: F28D 1/0477 the conduits being bent in a serpentine or zig-zag
• CPC Class Codes: F28D 2021/0029 Heat sinks
• CPC Class Codes: F28F 1/08 Tubular elements crimped or corrugated in longitudinal section
• CPC Class Codes: F28F 1/22 the means having portions engaging further tubular elements
• 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: H01L 2924/3011 Impedance

Abstract

There is described a heat sink having at least one tube through which cooling medium flows and which is surrounded by a heat-conducting material, wherein the tube wall of the at least one tube is corrugated in the direction of flow. The corrugated embodiment has the advantage that the transition from laminar to turbulent flow relative to a straight-walled tube is effected at a lower flow velocity and the heat transfer area is greater at the same tube length.

Claims

1-10. -10. (canceled)

11. A heat sink, comprising:

a tube through which cooling medium can flow, wherein the tube wall of the tube is corrugated in a flow direction; and

a heat-conducting material, wherein the tube is surrounded by the heat-conducting material.

12. The heat sink as claimed in claim 11, wherein the tube is a corrugated tube with parallel corrugations.

13. The heat sink as claimed in claim 11, wherein the tube is a spiral tube with spiral corrugations.

14. The heat sink as claimed in claim 11, wherein the tube is manufactured from corrosion-resistant high-grade steel or copper.

15. The heat sink as claimed in claim 11, wherein the surrounding material is selected from the group consisting of:

aluminum, copper, brass, and zinc.

16. The heat sink as claimed in claim 11, wherein the tube is formed as a tubular cavity out of the heat-conducting material.

17. The heat sink as claimed in claim 11, wherein the heat sink has an essentially plate-shaped geometry.

18. The heat sink as claimed in claim 11, wherein the tube is arranged in a meander shape.

19. The heat sink as claimed in claim 11, wherein the tube is arranged in a spiral shape.

20. The heat sink as claimed in claim 11, further comprising a water and antifreeze mixture used as the cooling medium.