Automatic set-back temperature control for air conditioners and

Details Automatic set-back temperature control for air conditioners and Automatic set-back temperature control for air conditioners and

1990-06-18

1992-03-31

Wayner, William E.

Automatic temperature and humidity regulation

High and low temperature alternate

250216, G05D 2300, H01J 314

Patent

active

051000539

ABSTRACT:
A control system for automatically changing the operational mode of appliances and the like, particularly environmental-affective appliances such as air conditioners, and in particular room air conditioners, as a function of the activity level prevalent in the environment being served, wherein the environmental activity level is monitored by detecting the level of ambient light and the detected light level is used to produce a signal for changing the previously-set operational parameter, e.g., room temperature. In a preferred embodiment, a lens system is utilized for focusing ambient light received at a detecting port upon a photodetector which is spaced from such port, and the resulting electrical signal is utilized in a circuit to control a heater mounted adjacent the appliance control, e.g., the air conditioner thermostat, to thereby vary the set-point in accordance with a predetermined relationship. In the preferred embodiment, the control circuit embodies a signal lamp or the like for indicating the active state of the control circuit, thereby signaling that set-point change is taking place.

REFERENCES:
patent: 2912593 (1959-11-01), Deuth
patent: 3352490 (1967-11-01), Dalzell et al.
patent: 3974426 (1976-08-01), Gingras
patent: 4014500 (1977-03-01), Galtz
patent: 4032069 (1977-06-01), Cannella
patent: 4188604 (1980-02-01), Maybee
patent: 4485864 (1984-12-01), Carrell et al.
patent: 4502290 (1985-03-01), Suzuki et al.
patent: 5022725 (1991-06-01), Natsunami

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