Refrigeration – Storage of solidified or liquified gas – Liquified gas transferred as liquid
Patent
1988-12-15
1990-03-20
Capossela, Ronald C.
Refrigeration
Storage of solidified or liquified gas
Liquified gas transferred as liquid
62 507, 137210, F17C 702
Patent
active
049090380
ABSTRACT:
A simple, inexpensive and reliable dispensing system for a cryogenic fluid is presented. The system controls the dispensing of a cryogenic liquid, such as liquid nitrogen, from a large, well insulated reservoir to a cooling enclosure for an electronic circuit or similar enclosure. In order to prevent a considerable heat influx from the environment to a standing cryogenic fluid through long lengths of insulated conduit between the main, well insulated reservoir and the enclosure, the system fills an intermediate reservoir and subsequently drains most of the long lengths of insulated conduit into the intermediate reservoir by a siphon action. The intermediate reservoir is well insulated and holds enough cryogenic fluid to fulfill the requirements of the cooling enclosure for long periods of time before refill from the main reservoir is necessary. Control of the fluid delivered to the intermediate reservoir may either be perform manually, since the reservoir has a float valve that prevents over filling, or automatically. Automatic control requires a level sensor which automatically turns off the flow from the main reservoir and siphons the cryogenic conduit into the intermediate reservoir.
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Capossela Ronald C.
Hawk Jr. Wilbert
Jewett Stephen F.
NCR Corporation
Penrod Jack R.
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