H - Electricity – 05 – K
Patent
H - Electricity
05
K
356/113, 321/18,
H05K 7/20 (2006.01)
Patent
CA 1185654
LIQUID COOLING SYSTEM FOR ELECTRICAL APPARATUS ABSTRACT OF THE DISCLOSURE A liquid cooling system for electrical apparatus, particular semiconductor stacks, has a reservoir and a lower and an upper header communicating with the reservoir. A plurality of arms connect the lower and upper header and the arms communicate with the stacks to conduct heat away from the semiconductors. The lower header slopes upwardly in a direction away from the reservoir and the upper header slopes upwardly in a direction towards the reservoir to reduce the occurrrence of vapour locks. A pump circulates a cooling liquid from the reservoir through the lower header, the arms and the upper header to the reservoir. A vacuum pump is connected to the upper part of the reservoir above the level of the cooling liquid to place the cooling system under reduced pressure so that any leaks which develop permit entry of air rather than outward leakage of liquid. An alarm is triggered with abnormal running of the vacuum pump indicating a leak. An alarm or shut down may also be triggered by a loss of the reduced pressure.
411654
Canadian General Electric Company Limited
Eckersley Raymond A.
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