A - Human Necessities – 47 – F
Patent
A - Human Necessities
47
F
62/108
A47F 3/04 (2006.01) F25D 21/06 (2006.01)
Patent
CA 1047266
ABSTRACT OF THE DISCLOSURE An improved defroster arrangement is equipped in a known refrigerating showcase provided with an inside duct for circulating a refrigerated air flow to refrigerate the interior of the showcase and an outside duct for circulating a low tem- perature air flow to prevent a temperature rise of the refriger- ated air flow in juxtaposition. The improvements exist in the provision of communication means between said inside and outside ducts, and gate means for opening and closing said communication means. Upon defrosting the gate means is actuated to communi- cate the inside and outside ducts to each other through the com- munication means and also to block the path through the outside duct between the communication means and an intake port. Thereby not only the air circulating through the inside duct upstream of the gate means and through both the inside and outside ducts downstream of the gate means that is driven by means of fans dis- posed within the inside and outside ducts, respectively, but also an ambient air may be jointly sucked into the inside duct up- stream of the gate means.
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