Spiral freezer with precooler
OwnerMichael D. NEWMAN, Stephen A. McCormickinventors
Life of this patent
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Abstract
A freezer includes a housing having a space therein for receiving a cryogenic gas, and an inlet and an outlet in communication with the space; a conveyor belt having an outer edge and being arranged for movement through the space for transferring a product from the inlet through to the outlet; a solid longitudinal member disposed in the space adjacent the outer edge for segregating the space into an upper chamber and a lower chamber; and a transfer duct operatively associated with the housing and having a first opening in communication with the upper chamber for receiving the cryogenic gas from the upper chamber and a second opening in communication with the lower chamber for expelling the cryogenic gas into the lower chamber.
Claims11
A freezer apparatus, comprising:
- a housing having a space therein for receiving a cryogenic gas, and an inlet and an outlet in communication with the space;
- a conveyor belt having an outer edge and being arranged for movement through the space for transferring a product from the inlet through to the outlet;
- a solid longitudinal member disposed in the space adjacent the outer edge of the conveyor belt for segregating the space into an upper chamber and a lower chamber;
- and
- a transfer duct operatively associated with the housing and having a first opening in communication with the upper chamber for receiving the cryogenic gas from the upper chamber and a second opening in communication with the lower chamber for expelling the cryogenic gas into the lower chamber.
Dependencies are inferred from the claim text.