Apparatus for refrigerating articles

Details Apparatus for refrigerating articles Apparatus for refrigerating articles

1976-12-15

1978-05-02

Capossela, Ronald C.

Refrigeration

Liquid contacting discrete commodity

With article conveyer or transporter

62380, 62514R, 137589, 239521, F25D 1702

Patent

active

040867846

ABSTRACT:
An apparatus, method and valve for refrigerating articles with a liquid cryogen that is liquid at low temperatures and converts to a solid and then to a gas at a critical and decreasing pressure. The cryogen is introduced to the refrigerating apparatus through a pipe in which is one or more valves having a valve opening closed by a pressure member that is biased to closed position by pressure that is at least equal to the critical pressure with means for subjecting the member to the cryogen at a pressure that is sufficient to overcome the biasing means and eject the cryogen from the valve. This ejecting pressure is at least equal to the critical pressure for the cryogen which may be liquid carbon dioxide so that the cryogen remains in the liquid state until it leaves the valves in order that it will not set up to a solid within the valve body. The disclosure also includes a method for refrigerating articles and a valve embodying these principles.

REFERENCES:
patent: 1364163 (1921-01-01), Wampler
patent: 2638127 (1953-05-01), Griswold
patent: 3815377 (1974-06-01), Tyree, Jr.
patent: 3841109 (1974-10-01), Cann

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