Electronic programmable thermostat

Details Electronic programmable thermostat Electronic programmable thermostat

1986-11-17

1988-06-21

Wayner, William E.

Heat exchange

With alarm, indicator, signal, register, recorder, test or...

Remotely controlled inspection means

236 47, 236 94, F23N 520

Patent

active

047519614

ABSTRACT:
An electronic thermostat includes selectable multiple predetermined temperature programs of desired temperatures over a repetitive time cycle. A manually operable temperature program selector enables recall of a desired temperature for a particular time from a temperature program memory in accordance with the selected predetermined temperature program. This desired temperature is compared to the ambient temperature in order to generate control signals for a temperature modifying device. In the preferred embodiment, the multiple temperature programs each consist of digital signals indicative of either a normal temperature or a set-back temperature. A separate operator actuable set point device determines the normal temperature. When the normal temperature is indicated, the thermostat controls the temperature modifying load to restore the selected normal temperature. When the set-back temperature is indicated, the thermostat controls the temperature modifying load to restore a temperature which is a predetermined number of degrees offset from the selected normal temperature. The set-back temperature is lower in a heating mode and higher in a cooling mode enabling reduced energy consumption in the temperature modifying device. In the preferred embodiment, the number of degrees of the offset is selectable via an operator control.

REFERENCES:
patent: 4071745 (1978-01-01), Hall
patent: 4206872 (1980-06-01), Levine
patent: 4428528 (1984-01-01), Renault

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