Leak tolerant liquid cooling system

Details Leak tolerant liquid cooling system Leak tolerant liquid cooling system

1986-10-14

1987-10-06

Tolin, G. P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

357 82, 16510431, 165 70, H05K 720

Patent

active

046987282

ABSTRACT:
A leak tolerant cooling system, for cooling electrical components with a liquid comprises: a frame holding a plurality of printed circuit boards, each of which have electrical components attached thereto; a top reservoir, mounted on the frame above the boards, for holding the liquid at atmospheric pressure; a conduit, coupled to the top reservoir and the boards, for conveying the liquid in a downward direction from the top reservoir over the components, the conduit being airtight in the absence of a leak therein; a bottom reservoir, coupled to the conduit below the boards, for receiving the liquid plus any air due to leaks from the conduit, the bottom reservoir being airtight except for a valve which opens in response to a valve control signal; a pump, coupled to the bottom reservoir, for sucking the liquid and air through the conduit at subatmospheric pressures in response to a pump control signal, and for simultaneously returning the liquid to the top reservoir; and a control circuit for generating the pump control signal starting when the liquid in the bottom reservoir is at a predetermined high level and continuing until the liquid in the bottom reservoir drops to a predetermined low level due to air leaking into the conduit, and for generating the valve control signal as the complement of the pump control signal.

REFERENCES:
patent: 3586101 (1971-07-01), Cho
patent: 4139056 (1979-02-01), Scholl
patent: 4278230 (1981-07-01), Allen
patent: 4287941 (1981-09-01), Allen
patent: 4493010 (1985-01-01), Morrison
patent: 4611238 (1986-09-01), Lewis
IBM Tech. Discl. Bull., vol. 20, No. 11A, Apr. 1978, p. 4334, Conduction Cooling Module, Hwang.
IBM Tech. Discl. Bull., vol. 20, No. 10, Mar. 1978, pp. 3919, 3920, Device Cooling, Johnson.

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