Method and apparatus for cooling or freezing

Details Method and apparatus for cooling or freezing Method and apparatus for cooling or freezing

1985-07-03

1988-05-24

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62177, 62374, 62380, 53493, 198855, 236 15BC, 358101, F25D 1306

Patent

active

047457627

ABSTRACT:
A video camera or other scanning device is employed to monitor the loading with articles to be frozen of an endless belt which passes through a freezing apparatus so as to freeze such articles typically by contact with liquid nitrogen or its cold vapor. The video camera is associated with electronic circuits that generate a signal representative of the belt loading and compare it with a signal representative of an optimum belt loading. If the difference between the signals is greater than a chosen threshold the belt speed is adjusted so as to reduce or eliminate the difference. By this means an improvement is made possible in the efficiency with which the liquid nitrogen is utilized.

REFERENCES:
patent: 3532807 (1970-10-01), Webb
patent: 3733848 (1973-05-01), Duron et al.
patent: 4118179 (1978-10-01), Ballinger
patent: 4135346 (1979-01-01), Rebsamen
patent: 4386504 (1983-06-01), Brautigam
patent: 4394896 (1983-07-01), McComas et al.
patent: 4473842 (1984-09-01), Suzuki et al.
patent: 4581632 (1986-04-01), Davis et al.

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