Cooling computer systems
AssigneeInternational Business Machines Corporation
InventorsGregory M. Chrysler, Richard C. Chu, Gary F. Goth, Robert E. Simons
Life of this patent
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Abstract
A redundant refrigeration system is used in conjunction with a dual passage cold plate to provide reliable cooling for electronic circuit modules particularly to such modules which incorporate computer processors for which long term "up time" is very highly desirable. Separate compressor-expansion device-condenser refrigeration systems are coupled to a single cold plate which maintains flow-wise isolation between refrigerant streams while at the same time providing close thermal coupling.
Claims5
An apparatus for cooling electronic circuits, said apparatus comprising:
- a cold plate evaporator having a surface which conforms to the outer dimensions of a package containing electronic circuits which are to be cooled, said cold plate also having first and second coolant flow passages therein, said passages being thermally connected to each other, with such passages also being flow wise isolated from each other;
- a first compressor connected at an inlet thereof to a first end of said first passage;
- a first condenser connected at an inlet thereof to an outlet of said first compressor;
- a first expansion device in a first coolant flow line connecting an output of said first condenser to the other end of said first passage;
- a second compressor connected at an inlet thereof to a first end of said second passage;
- a second condenser connected at an inlet thereof to an outlet of said second compressor;
- a second expansion device in a second coolant flow line connecting an output of said second condenser to the other end of said second passage;
- and
- means to reduce thermal output from said electronic circuits in the event that failure of one of said first and second compressors is detected.
Dependencies are inferred from the claim text.