Frost control system for high-speed horizontal folding doors

Details Frost control system for high-speed horizontal folding doors Frost control system for high-speed horizontal folding doors

H - Electricity

05

B

309/5

H05B 3/84 (2006.01) F25D 21/04 (2006.01) F25D 21/08 (2006.01) F25D 23/02 (2006.01) F25D 13/00 (2006.01)

Patent

CA 1309446

ABSTRACT A frost resistant, horizontal folding door for a freezer room has heater assemblies in the header, jambs and for simultaneously heating the door curtain and the floor of the doorway. The heater assembly in the header can be a mat of open mesh fiber glass having a serpentine array of an electric resistance heating wire bonded to it. The heater assembly in the jamb can be a formable electrical resistance heater within the structure of the jamb. The heater assembly for the door curtain and the floor of the doorway can be an electrical radiant heater disposed on the header and directed at the curtain and the floor.

588285

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