Compliant mat cooling

• US 4,155,402 A
• Filed: 01/03/1977
• Issued: 05/22/1979
• Est. Priority Date: 01/03/1977
• Status: Expired due to Term

• Current Assignee: Sperry Rand Corporation
• Original Assignee: Sperry Rand Corporation
• Inventors: Just, Anthony H.
• Primary Examiner(s): Myhre, Charles J.
• Assistant Examiner(s): Streule, Jr., Theophil W.
• Application Number:
  US05/756,163
• Time in Patent Office: 869 Days
• Field of Search: 165/46, 165/80, 174/16 HS, 361/386-388
• US Class Current: 165/46
• CPC Class Codes: H05K 7/20254 Cold plates transferring heat from heat source to coolant
• CPC Class Codes: Y10S 165/047 for cooling

Abstract

A printed circuit board package for high density packaging of electronic circuit components is disclosed. The circuit components are cooled by a liquid cooled, cold plate with a compliant mat interface. The interface is made of a heat conductive, electrically insulative compliant structure, such that uniform contact can be made with the circuit components, even if there are differences in the relative heights and shapes of the components.

Claims

1. A cold plate assembly for use in combination with printed circuit boards having circuit components mounted thereon, comprising:

cold plate means for extracting heat from said circuit components;

a deformable thin film;

a heat conductive paste;

sealing means sealing said heat conductive paste between said thin film and said cold plate means for forming a compliant mat interface in the area of said thin film;

said compliant mat interface deforming to comply to irregularities on and between the contours of said circuit components mounted in compression with said compliant mat interface and creating a heat transfer relationship between said circuit components and said cold plate means.

2. A cold plate assembly as set forth in claim 1, wherein said thin film is electrically insulative.

3. A cold plate assembly for use in combination with printed circuit boards having circuit components mounted thereon, comprising:

cold plate means having first and second surfaces for extracting heat from said circuit components;

a first and a second deformable thin film;

a heat conductive paste;

sealing means sealing said heat conductive paste between each of said first and second surfaces and said respective first and second thin films for forming a first and a second compliant mat interface in the area of said first and second thin films;

said first and second compliant mat interfaces deforming to comply to irregularities on and between the contours of said heat generating circuit components mounted in compression with said first and second compliant mat interfaces and creating a heat transfer relationship between said circuit components and said cold plate means.

4. A liquid cooled cold plate assembly for cooling circuit components, comprising:

a frame having sidewalls, a first surface and a second surface, said sidewalls and said first and second surfaces circumscribing a cavity formed within said frame;

supply and return means connected to said frame for circulating a liquid coolant through said cavity;

a heat conductive paste;

a deformable thin film;

sealing means for sealing said heat conductive paste between said first surface and said thin film and forming a compliant mat interface in the area of said thin film;

said compliant mat interface deforming to comply to irregularities on and between the surface contours of said circuit components mounted in compression with said compliant mat interface and creating a heat transfer relationship between said heat generating devices and said liquid coolant.

5. A liquid cooled cold plate assembly as set forth in claim 4 including a second compliant mat interface comprised of said heat conductive paste and a second deformable thin film sealed to said second surface of said frame.

6. A liquid cooled cold plate assembly for cooling circuit components, comprising:

a frame having sidewalls, a first surface and a second surface, said sidewalls and said first and second surfaces circumscribing a serpentine cavity formed within said frame and said first and second surfaces each having a depression formed therein;

supply and return means connected to said frame for circulating a liquid coolant through said serpentine cavity;

a heat conductive paste;

a first and a second deformable thin film;

sealing means for sealing said heat conductive paste between said depression formed in said first and second surfaces and said respective first and second thin films and forming respective first and second compliant mat interfaces in the areas of said respective first and second thin films;

said first and second compliant mat interfaces deforming to comply to irregularities on and between the surface contours of said circuit components mounted in compression with said first and second compliant mat interfaces and creating a heat transfer relationship between said circuit components and said liquid coolant.