Integral cold plate and structural member

• US 8,522,861 B2
• Filed: 03/29/2010
• Issued: 09/03/2013
• Est. Priority Date: 03/29/2010
• Status: Active Grant

• Current Assignee: Hamilton Sundstrand Space Systems International Inc (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: Hamilton Sundstrand Space Systems International Inc (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Zaffetti, Mark A., Taddey, Edmund P.
• Primary Examiner(s): Flanigan, Allen
• Assistant Examiner(s): THOMPSON, JASON N
• Application Number:
  US12/748,490
• Publication Number:
  US 20110232863A1
• Time in Patent Office: 1,254 Days
• Field of Search: 165/170, 165/80.5, 165/168, 165/171, 165/167, 165/143, 165/144, 165/139, 165/906, 165/80.4, 428182-186
• US Class Current: 165/80.4
• 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: Y10T 29/49359 Cooling apparatus making, e.g., air conditioner, refrigerator

Abstract

A cold plate assembly is provided having a cold plate with a generally planar member that provides a support surface. The support surface is configured to support a heat generating device. A structural member provides attaching features that are configured to secure the cold plate assembly to a support. The cold plate is secured to the structural member by a braze material. In one example, the cold plate assembly is manufactured by arranging multiple sheets with a first braze material provided between the sheets. The multiple sheets comprise a cold plate. The braze material is heated to mechanically join the multiple sheets to one another and the cold plate to the structural member.

Claims

1. A cold plate assembly comprising:

a cold plate having a generally planar member providing a support surface configured to support a heat generating device;

a structural member providing attaching features configured to secure the cold plate assembly to a support, the cold plate secured to the structural member by a braze material, wherein the attaching features include tabs with holes configured to be removably secured to the support;

wherein the structural member includes a frame providing a cavity, and a reinforcing layer disposed within the cavity and secured to adjacent sheets;

wherein the cavity extends across a substantial portion of the structural member, and the structural member is configured to prevent cooling fluid from flowing into the cavity during an operating condition; and

a fluid port secured to the cold plate, wherein the fluid port is in fluid communication with sheet passages in the structural member outside of the cavity.

2. A cold plate assembly comprising:

a first cold plate having a generally planar member providing a support surface configured to support a heat generating device;

a structural member providing attaching features configured to secure the cold plate assembly to a support, the first cold plate secured to a first side of the structural member by a braze material;

a second cold plate having a generally planar member, wherein the second cold plate is secured to a second side of the structural member by a braze material, the second side opposite the first side;

wherein the structural member includes a first frame providing a cavity, and a reinforcing layer disposed within the cavity and secured to adjacent sheets;

wherein the cavity extends across a substantial portion of the structural member, and the structural member is configured to prevent cooling fluid from flowing into the cavity during an operating condition; and

wherein the first frame includes first frame passages outside the cavity, the adjacent sheets include sheet passages, and the sheet passages are aligned with the frame passages, the sheet passages and frame passages communicating cooling fluid between the first and second cold plates.

3. The cold plate assembly of claim 2, wherein the structural member includes a second frame, the second frame providing a second cavity, and a second reinforcing layer disposed within the second cavity and secured to adjacent sheets;

wherein the second cavity extends across a substantial portion of the structural member, and the structural member is configured to prevent cooling fluid from flowing into the second cavity during an operating condition; and

wherein the second frame includes second frame passages outside the second cavity, the second frame passages aligned with the sheet passages and the first frame passages to communicate fluid between the first and second cold plates.

4. The cold plate assembly of claim 3, wherein the adjacent sheets include a first sheet, a second sheet, and a third sheet, the first frame arranged between the first and second sheets, and the second frame arranged between the second and third sheets.

5. The cold plate assembly of claim 2, having fluid ports mounted on each of the first and second cold plates.

6. The cold plate assembly of claim 2, the sheet passages and frame passages creating first and second structural fluid passages, the direction of fluid flow through the first structural fluid passage opposing the direction of fluid flow through the second structural fluid passage.

7. The cold plate assembly of claim 2, wherein the first cold plate includes first and second cold plate sheets with a fluid passage arranged between the first and second cold plate sheets, the first cold plate sheet providing a first support surface and the second cold plate sheet secured to the structural member;

and

the second cold plate includes third and fourth cold plate sheets with a second fluid passage arranged between the third and fourth cold plate sheets, the third cold plate sheet providing a second support surface and the fourth cold plate sheet secured to the structural member.