| 摘要 |
Process and device for freezing substances contained in a receptacle, in which the receptacle (4) is placed on a support (7) and is moved along the support in a path. The support is a conveyor, preferably a vibratory conveyor, and is maintained partially immersed in a liquefied gas (13). The level of the liquefied gas (13) does not exceed the height of the substance in the receptacle (4). The vibratory conveyor comprises a vibrating trough (1) having two opposed walls (9) defining between them a guide channel (3) for the receptacles (4) and, on opposite sides, a chamber (10) for distribution of liquefied gas. A device (11) provides liquefied gas to each chamber (10). The bottom (7) of the vibrating trough (1) is of embossed sheet metal.
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