Condensation control system for heated insulating glass units

Details Condensation control system for heated insulating glass units Condensation control system for heated insulating glass units

1997-03-19

2000-11-07

Waiberg, Teresa

Electric heating

Heating devices

With heater-unit housing, casing, or support means

219203, 219543, C23C 1434

Patent

active

061440175

ABSTRACT:
A glass heating system includes a low emissivity sheet of coated glass and an optical sensor mounted on the surface of the glass for optically detecting condensation on the glass. The low emissivity glass is economical to produce and provides superior thermal properties. The low emissivity glass has improved thermal characteristics for use in insulating glass doors for freezers and refrigerators. The optical sensor is positioned between the sheets of glass in the insulating glass unit for detection of moisture on the outer surface. When condensation is detected, the controller transmits power through the conductive coating on the unexposed surface of the glass to heat the glass and eliminate the condensation. In a two paned insulating glass door, the control circuit can be conveniently mounted in the frame of the door.

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