Process for freezing or chilling

Details Process for freezing or chilling Process for freezing or chilling

1985-03-25

1987-04-07

Capossela, Ronald C.

Refrigeration

Processes

Treating an article

62 74, 426524, F25D 1702

Patent

active

046550470

ABSTRACT:
Chilling or freezing a substance into small pellets is disclosed. A substance such as liquid egg falls gently from only a small height onto the surface (12) of liquid nitrogen. The discharge nozzle (13) is prevented from freezing up by a flow of ambient or heated air over it. The surface of the boiling nitrogen is kept smooth by imparting a velocity to the nitrogen with an impeller (20) or by running the nitrogen along a trough. The pellets are consistent as to final temperature, and the process is efficient as to nitrogen use. The process can be used with other thick, creamy substances.

REFERENCES:
patent: 2448802 (1948-09-01), Holzcker
patent: 2875588 (1959-03-01), Berger
patent: 3228838 (1966-01-01), Rinfret et al.
patent: 3832764 (1974-09-01), Rasovich
patent: 3857974 (1974-12-01), Aref et al.
patent: 4077227 (1978-03-01), Larson

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