Greenhouse control device

Details Greenhouse control device Greenhouse control device

1976-09-09

1978-03-14

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

236 78C, 318467, 318626, F24F 702, G05B 602

Patent

active

040787214

ABSTRACT:
Apparatus for controlling the opening and closing of windows in a greenhouse or other structure which includes temperature sensing means for producing a control signal, means for producing a second control signal corresponding to a temperature at which the windows are to be opened, means actuated by the windows for producing a third control signal, means comparing the third signal with the first and second signals to produce a comparison signal which functions to operate motors to open and close said windows.

REFERENCES:
patent: 2584691 (1952-02-01), Galeazi
patent: 2695752 (1954-11-01), Rodeck
patent: 2812141 (1957-11-01), Sueda et al.
patent: 3391317 (1968-07-01), Bell

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