Optimized integral heat pipe and electronic circuit module arrangement
First Claim
1. An optimized integral heat pipe and electronic circuit assembly comprising:
- a thermally conductive multichip circuit module having top and bottom surfaces and a periphery, said multichip circuit module including a multiplicity of heat producing electronic circuit elements mounted to said bottom surface;
heat pipe means hermetically coupled to and enclosing the top surface of said multichip circuit module, said heat pipe means enclosing a working fluid for generating an evaporated working fluid vapor when said heat pipe means receives heat produced by said heat producing electronic circuit elements;
a layer of titanium adhered to and extending substantially over the top surface of said multichip module;
a layer of high-purity copper adhered to and extending substantially over said layer of titanium;
a thermal wick adhered to and extending substantially over said layer of high-purity copper, said thermal wick drawing said working fluid to a heated region of said multichip circuit module.
2 Assignments
0 Petitions
Accused Products
Abstract
An optimized integral heat pipe and electronic circuit module arrangement is described. A ceramic multi-chip module bearing electronic circuit components has applied to the side opposite the electronic circuit components preparatory metallization and a thermal wick. A heat pipe evaporator chamber and condenser assembly is attached to the multi-chip module and wick assembly. A suitable working fluid is introduced into the vapor chamber and the vapor chamber hermetically sealed. Application of the thermal wick to the heat producing multi-chip module eliminates the thermal impedance contributed by thermal transmission media used in prior art heat pipe assemblies, permitting a doubling of heat flux from the multi-chip module to the heat pipe evaporator.
-
Citations
5 Claims
-
1. An optimized integral heat pipe and electronic circuit assembly comprising:
-
a thermally conductive multichip circuit module having top and bottom surfaces and a periphery, said multichip circuit module including a multiplicity of heat producing electronic circuit elements mounted to said bottom surface; heat pipe means hermetically coupled to and enclosing the top surface of said multichip circuit module, said heat pipe means enclosing a working fluid for generating an evaporated working fluid vapor when said heat pipe means receives heat produced by said heat producing electronic circuit elements; a layer of titanium adhered to and extending substantially over the top surface of said multichip module; a layer of high-purity copper adhered to and extending substantially over said layer of titanium; a thermal wick adhered to and extending substantially over said layer of high-purity copper, said thermal wick drawing said working fluid to a heated region of said multichip circuit module. - View Dependent Claims (2, 3, 4)
-
-
5. An optimized integral heat pipe and electronic circuit assembly comprising:
-
a thermally conductive multichip circuit module having top and bottom surfaces and a periphery, said multichip circuit module including a multiplicity of heat producing electronic circuit elements mounted to said bottom surface, said multichip module comprising diamond; heat pipe means hermetically coupled to and enclosing the top surface of said multichip circuit module, said heat pipe means enclosing a working fluid for generating an evaporated working fluid vapor when said heat pipe means receives heat produced by said heat producing electronic circuit elements; a primer layer adhered to and extending substantially over the top surface of said multichip module; a thermal wick adhered to and extending substantially over said primer layer, said thermal wick drawing said working fluid to a heated region of said multichip circuit module;
wherein said thermal wick comprises sintered copper.
-
Specification