Duplex thermostat

Details Duplex thermostat Duplex thermostat

H - Electricity

01

H

306/187

H01H 37/52 (2006.01)

Patent

CA 1081296

DUPLEX THERMOSTAT ABSTRACT OF THE DISCLOSURE A thermostat is provided for controlling a heating apparatus having two individually actuatable heating elements in order to more accurately control the heat output of the apparatus, The thermostat is designed such that at environment of temperatures below a set temperature t1, less than the desired temperature t, both heating elements are actuated. As the environmental temperature increases beyond the set temperature t1, the thermostat deactuates the main heat- ing element and the secondary heating element alone is controlled to regulate variations in environmental temp- erature around the desired temperature level t. Both thermostatic functions are combined in a single device, Means are provided for adjusting the desired temperature level t and the set temperature t1 simultaneously for maintaining the difference .DELTA. t therebetween at a constant magnitude, Further, means are also provided for adjusting the difference .DELTA. t between the set temperature t, and the desired temperature level t1, The result is energy conservation and a more stable environmental temperature.

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