A - Human Necessities – 47 – F
Patent
A - Human Necessities
47
F
62/108
A47F 3/04 (2006.01) F25D 21/12 (2006.01)
Patent
CA 1132807
GLASS DOOR MERCHANDISER WITH AMBIENT AIR DEFROST ABSTRACT OF THE DISCLOSURE A refrigerated display case having a display section within a cabinet and movable door covering the access opening to such display section. The cabinet has top, bottom, rear and side walls with an access opening in its front, which opening is covered by the door. An air conduit extends along the top, bottom and rear walls of the cabinet. The air conduit has an outlet opening and an inlet opening at opposing ends thereof with the openings being in alignment so that air leaving the outlet opening will be directed towards and received by the inlet opening thereby forming an air curtain across the front opening of the cabinet along the path inside the door. During a refrigeration cycle of operation of the display case, re- frigerated air is circulated through the air conduit and a refrigeration mechanism arranged within the conduit by a positive pressure air flow so as to establish a refrigerated air band and a refrigerated air curtain across the front opening in the cabinet. During a defrost cycle of operation, the re- frigeration mechanism is turned off and the door covering the front access opening is slightly opened. Ambient air is then drawn into the air conduit and circulated through the conduit. Such ambient air serves to defrost the refrigeration mechanism and the interior of the air conduit. After defrosting the refrigeration mechanism, the ambient air is expelled through the front access opening of the cabinet since the door has been slightly opened during the defrost cycle.
363408
George H. Riches And Associates
Tyler Refrigeration Corporation
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