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US 5,070,932 AGranted
Thermostat with enhanced outdoor temperature anticipation
AssigneeLennox Industries Inc.
InventorRobert C. Vlasak
Life of this patent
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AssigneeLennox Industries Inc.
InventorRobert C. Vlasak
Estimating the term…
A thermostat for controlling the temperature within a space to be conditioned includes a system mode selector switch for selecting one of the heating, cooling or off modes of operation and a blower mode selector switch for selecting an automatic (cycling) or continuous mode of operation for the blower for blowing air into the confined space. Within the thermostat are heating actuating switches for one or more stages with associated anticipators and a cooling actuating switch with associated anticipator. An ambient compensating thermistor and a fixed resistor in series therewith are associated with the thermostat. Enhanced outdoor temperature compensation is provided by an outdoor positive temperature compensating thermistor in series with a variable resistor, which are arranged in parallel with the fixed resistor.
A thermostat for controlling the temperature within a confined space comprising, system mode selector means for selecting heating, cooling or off modes of operation, blower mode selector means for selecting automatic or continuous modes of operation, first stage heating actuating means, a first stage heating anticipator associated therewith, second stage heating actuating means, a second stage heating anticipator associated with said second stage heating actuating means, first stage cooling actuating means, a first stage cooling anticipator associated with said first stage cooling actuating means, ambient compensating means and a resistance means in series therewith associated with said thermostat and means for providing enhanced outdoor temperature compensation comprising an outdoor compensating thermistor and a variable resistor in series therewith, said outdoor compensating thermistor and said variable resistor being disposed in parallel about said resistance means.
In a thermostat for controlling the temperature within a confined space said thermostat comprising a system mode selector means for selecting heating, cooling or off modes of operation, blower mode selector means for selecting automatic or continuous modes of operation, first stage heating activating means, a first stage heating anticipator associated therewith, a second stage heating actuating means, a second stage heating anticipator associated with said second stage heating actuating means, a first stage cooling actuating means, a first stage cooling anticipator associated with said first stage cooling actuating means, ambient compensating means and a resistance means in series therewith associated with said thermostat, the improvement characterized by means for providing enhanced outdoor temperature compensation comprising an outdoor compensating thermistor and a variable resistor in series therewith, said outdoor compensating thermistor and said variable resistor being disposed in parallel about said resistance means.
Dependencies are inferred from the claim text.