Refrigeration – Processes – Defrosting or frost inhibiting
Patent
1980-10-31
1982-04-27
King, Lloyd L.
Refrigeration
Processes
Defrosting or frost inhibiting
62256, 62282, F25D 2112, A47F 304
Patent
active
043263852
ABSTRACT:
A refrigerated display cabinet having air outlet ports in the top wall thereof for expelling ambient defrost air to the outside of the cabinet so that the air will not reenter the product display space. A baffle plate provided for blocking the passage of ambient defrost air into the top portion of the refrigerated air conduit during the defrost cycle from which it could flow into the product display space. A protective ambient air band is established across the access opening during the defrost cycle during which the flow of ambient defrost air is prevented from entering the internal cabinet product display space. The gate covering the air outlet port is used to mechanically control the closure of the baffle plate blocking the flow of ambient defrost air into the internal product display space. The operation of the display cabinet permits ambient air flow in the primary air conduit in the same direction during both the refrigeration and defrost cycles of operation so that only unidirectional fan motors are required in the cabinet.
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King Lloyd L.
Tyler Refrigeration Corporation
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