초록 ▼

To prevent ice build up around the door of a walk in freezer a heater is provided under the threshold of the door to heat a column of air between the inner surface of the door and the flexible thermal barrier inside the freezer. The heater is operated continuously regardless of whether the door is o

To prevent ice build up around the door of a walk in freezer a heater is provided under the threshold of the door to heat a column of air between the inner surface of the door and the flexible thermal barrier inside the freezer. The heater is operated continuously regardless of whether the door is open or closed to maintain the surfaces around the door, and the thermal barrier, at above freezing temperatures.

대표청구항 ▼

1. The method of preventing a build up of ice on the perimeter of the doorway of a freezer, said freezer having a floor, a door moveable between an open position and a closed position, said doorway defined by a pair of opposing side surfaces, an upper surface and a threshold surface, said doorway ha

1. The method of preventing a build up of ice on the perimeter of the doorway of a freezer, said freezer having a floor, a door moveable between an open position and a closed position, said doorway defined by a pair of opposing side surfaces, an upper surface and a threshold surface, said doorway having an inner flexible barrier to retain cold air within said freezer while said door is in said open position, said method comprisingproviding a heating element, positioning said heating element to heat a column of air between an inner surface of said closed door and said flexible barrier to maintain said surfaces of said doorway at above freezing temperatures, and applying heat from said heating element continuously, when said door is in said open position and in said closed position.