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US 2015/0027141 A1Published application
Batch freezer with cryogenic precooling apparatus and method
OwnerLouis Lilakos, Michael D. Newmaninventors
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Abstract
A freezer for a product includes a housing having a chamber therein with an atmosphere for reducing a temperature of the product; a cryogen refrigeration apparatus operationally associated with the chamber during a first cycle to pre-cool the atmosphere in the chamber; and a mechanical refrigeration apparatus operationally associated with the chamber during a second cycle to cool the atmosphere in the chamber when the first cycle is completed. A process is also provided.
Claims18
A freezer for a product, comprising:
- a housing having a chamber therein and an atmosphere in said chamber for reducing a temperature of the product;
- a cryogen refrigeration apparatus operationally associated with the chamber during a first cycle to pre-cool the atmosphere in the chamber;
- and
- a mechanical refrigeration apparatus operationally associated with the chamber during a second cycle to cool the atmosphere in the chamber when the first cycle is completed.
1 more element
A process for reducing a temperature of a product in an atmosphere of a freezer, comprising:
- cryogenically reducing the temperature of the atmosphere with a cryogenic refrigeration apparatus operating during a first cycle for pre-cooling the atmosphere;
- and
- mechanically reducing the temperature of the atmosphere with a mechanical refrigeration apparatus operating during a second cycle for cooling the atmosphere when the first cycle is not operating.
Dependencies are inferred from the claim text.