Interleaved heat sink and fan assembly

• US 9,409,264 B2
• Filed: 03/25/2013
• Issued: 08/09/2016
• Est. Priority Date: 03/25/2013
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Gilliland, Don A., Johnson, David B., Mann, Phillip V.
• Primary Examiner(s): Flanigan, Allen
• Assistant Examiner(s): HINCAPIE SERNA, GUSTAVO A
• Application Number:
  US13/849,725
• Publication Number:
  US 20140284030A1
• Time in Patent Office: 1,233 Days
• Field of Search: 165/127, 165/120, 165/121, 165/122, 165/58, 165/59, 165/185, 361/697
• US Class Current: 1/1
• CPC Class Codes: B23P 15/26 heat exchangers or the like making heat exchangers by methods covered by other subclasses B21D53/02
• CPC Class Codes: H01L 23/3672 Foil-like cooling fins or heat sinks being part of lead-frames H01L23/49568
• 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
• CPC Class Codes: Y10T 29/4935 Heat exchanger or boiler making

Abstract

According to embodiments of the invention, a structure for cooling electronic components may be provided. The structure may include a heat sink having a plurality of parallel heat conducting elements. The structure may also include a plurality of fans, wherein the fans are interleaved with the heat conducting elements. The structure may also include a drive shaft passing through the heat conducting elements and the fans, wherein the drive shaft rotates the fans in relation to the heat sink. According to other embodiments, the structure may include a baffle located on a side of the heat sink in an upstream location within an airflow stream.

Claims

1. An assembly for cooling electronic components comprising:

a heat sink having a casing with a plurality of parallel heat conducting fins, wherein each of the parallel heat conducting fins is mounted to a flat baseplate and includes a respective curved side that is oriented perpendicular to the flat baseplate;

a plurality of fans, wherein each fan includes a plurality of fan blades curved in a forward direction in relation to a direction of rotation of a drive shaft, the fan blades having a front side and a back side oriented perpendicular to the direction of rotation of the drive shaft and a top side and a bottom side oriented parallel to the direction of rotation of the drive shaft and the fans are interleaved with the heat conducting fins; and

the drive shaft passing through the heat conducting fins and the fans, wherein the drive shaft rotates the fans in said rotation direction in relation to the heat sink;

wherein each of the heat conducting fins includes one or more slots, each of the one or more slots extending from a periphery of the respective curved side toward a center of the heat conducting fin.

2. The assembly of claim 1, further comprising a baffle located on a side of the heat sink in an upstream location within an airflow stream.

3. A method of assembly comprising:

Providing a heat sink having a casing with a plurality of parallel heat conducting fins, wherein each of the parallel heat conducting fins is mounted to a flat baseplate and includes a respective curved side that is oriented perpendicular to the flat baseplate;

placing a plurality of fans within the heat sink, wherein each fan includes a plurality of fan blades curved in a forward direction in relation to a direction of rotation of a drive shaft, the fan blades having a front side and a back side oriented perpendicular to the direction of rotation of the drive shaft and a top side and a bottom side oriented parallel to the direction of rotation of the drive shaft and the fans are interleaved with the heat conducting fins; and

passing a drive shaft through the heat conducting fins and the fans, wherein the drive shaft rotates the fans in said rotation direction in relation to the heat sink;

wherein each of the heat conducting fins includes one or more slots, each of the one or more slots extending from a periphery of the respective curved side toward a center of the heat conducting fin.

4. The method of claim 3, further comprising affixing a baffle to a side of the heat sink in an upstream location within an airflow stream.