Defrosting in open show case of cold-air-circulation type

Details Defrosting in open show case of cold-air-circulation type Defrosting in open show case of cold-air-circulation type

A - Human Necessities

47

F

62/108

A47F 3/04 (2006.01) F25D 21/06 (2006.01)

Patent

CA 1054386

DEFROSTING IN OPEN SHOW CASE OF COLD-AIR-CIRCULATION TYPE ABSTRACT OF THE DISCLOSURE An open show case of cold-air-circulation type having a front access opening, a passage with a cooler and an air fan for circulating cold air therethrough and forming a cold air curtain across the access opening, and at least one other air passage with an air fan for circulating air and forming another protective layer of air curtain outside of the cold air curtain is defrosted by controllably oper- ating the fans respectively in mutually adjacent air pas- sages to blow air in mutually opposite directions thereby to cause air to flow in short circuited flow at passage openings at the access opening, whereby air ejected from one passage at the access opening is immediately sucked into the adja- cent passage without crossing the access opening, thereby to draw in warm outside air into the cold air passage and thereby to accomplish defrosting. -1-

265488

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