Low temperature fail-safe cascade cooling apparatus

Details Low temperature fail-safe cascade cooling apparatus Low temperature fail-safe cascade cooling apparatus

1983-02-15

1984-11-27

Tapolcai, William E.

Refrigeration

Processes

Exchanging heat between plural systems, e.g., disparate

62175, 62231, 62335, 318112, 417 12, F25B 700

Patent

active

044844492

ABSTRACT:
My invention relates to improvements in cascade cooling apparatus and to a method for maintaining a substantially safe low temperature level within an enclosure. In general, the invention is concerned with an apparatus that is designed for fail safe low temperature cascade cooling operation and specifically with preservation of biological specimen in low temperature storage. The invention incorporates a control system to continuously operate said cascade apparatus despite failure of a component therein, while maintaining a safe level of low temperature within the enclosure whose temperature is produced by said apparatus.

REFERENCES:
patent: 1666873 (1928-04-01), Durdin, Jr.
patent: 1828696 (1931-10-01), Woodford
patent: 1982578 (1934-11-01), Durdin, Jr.
patent: 2707869 (1955-05-01), Dennison
patent: 3122003 (1964-02-01), Sullivan
patent: 3285181 (1966-11-01), Howard

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