Refrigeration – Automatic control – Preventing – removing or handling atmospheric condensate
Patent
1997-05-19
1998-07-14
Tanner, Harry B.
Refrigeration
Automatic control
Preventing, removing or handling atmospheric condensate
62248, 219218, H05B 384
Patent
active
057786895
ABSTRACT:
An energy conservation device, for use with display type refrigeration and freezer units having glass display doors for preventing the formation of condensation and frost on the glass of the doors. The device comprises heating elements arranged with portions of the doors which act to maintain the doors within a desired temperature range. A control is connected with the heating elements and with an electrical power source. The control includes a monitor for monitoring room temperature and relative humidity and includes a processor for converting same into degrees dew point. A pulse activator is connected with the heating elements for delivering an electrical pulse having a determined active width. The processor continuously accesses the dew point and continuously determines the active width of the electrical pulses necessary to maintain the doors within the desired temperature range. The processor delivers the electrical pulses having determined active widths to the pulse activator for delivery to the heating elements. By controlling the active width of each electrical pulse a minimum of electrical energy is consumed in maintaining the glass doors free of condensation and frost.
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Flint Cort
Jaudon Henry S.
Tanner Harry B.
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