Apparatus for forming solid carbon dioxide

摘要

A substantially uniform blanket of solid carbon dioxide (i.e., snow) is formed by introducing a plurality of low velocity streams of CO2 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 CO2 streams. Baffle means are provided in the upper reaches of the funnel section and are effective to initially separate the CO2 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 CO2 snow in a container for products to be refrigerated.