Apparatus for forming solid carbon dioxide

Details Apparatus for forming solid carbon dioxide Apparatus for forming solid carbon dioxide

1984-08-23

1987-03-24

Sever, Frank

Refrigeration

Processes

Circulating external gas

62 10, F25D 312

Patent

active

046522875

ABSTRACT:
A substantially uniform blanket of solid carbon dioxide (i.e., snow) is formed by introducing a plurality of low velocity streams of CO.sub.2 solid and gas generally downwardly into a funnel section which exhibits an increasing, generally rectangular cross-sectional area in the direction of flow of the CO.sub.2 streams. Baffle means are provided in the upper reaches of the funnel section and are effective to initially separate the CO.sub.2 streams introduced into the funnel section from one another and to cause the resulting solid carbon dioxide to fall generally downwardly and uniformly throughout the cross-sectional area of the funnel section to thereby form a substantially uniform blanket of CO.sub.2 snow in a container for products to be refrigerated.

REFERENCES:
patent: 3786644 (1974-01-01), Rich et al.
patent: 4166364 (1979-09-01), Ruprecht et al.

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