The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 23, 1992

Filed:

Apr. 26, 1991
Applicant:
Inventor:

Tadao Hosaka, Yamanashi, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05K / ; H05K / ; H02B / ; G05D / ;
U.S. Cl.
CPC ...
165 35 ; 165 39 ; 165 40 ; 165 804 ; 165921 ; 236 / ; 236 / ; 361382 ; 361385 ;
Abstract

A cooling apparatus for cooling a given device which is incorporated in a computer or similar electronic equipment and generates heat by circulating a liquid coolant through the device of interest. A secondary cooling liquid exchanges heat with a primary cooling liquid in a heat exchanger and then flows into the device of the equipment. When the difference in temperature between the secondary cooling liquid and the interior of the equipment decreases beyond a predetermined value, a heat exchanging mechanism is caused to stop operating. On the increase of the difference in temperature beyond the predetermined value, the heat exchanging mechanism is caused to begin operating again. Alternatively, the operation of a secondary cooling liquid feeding mechanism may be interrupted and then set up again on the basis for the above-mentioned difference in temperature.


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