Automatic temperature and humidity regulation – Humidity control
Patent
1979-11-09
1981-08-11
Tapolcai, Jr., William E.
Automatic temperature and humidity regulation
Humidity control
165 21, F24F 314
Patent
active
042830079
ABSTRACT:
A mixed air conditioning controller is formed as a factory assembled and adjusted unit in a compact housing, with simple and direct input/output field connectors. Various temperature and humidity input devices are field connected to produce a sequenced control of the air dampers and mechanical cooling and heating devices, as well as auxiliary devices. The controller includes a primary input related to room demand, an outside air temperature input, with an interlocked control to the damper, a fan status input, a minimum air supply control and a by-pass switch having a low limit input. The logic network connecting the input/output includes pneumatic switching, pressure selecting and comparing devices of a diaphragm-controlled-orifice construction connected to function as fluidic repeaters, pressure regulating valves and pressure isolating and switching devices. The controller includes a conditioning channel and a damper channel. An outside air interlock controls the damper channel and a presettable switch controls the minimum air supply control. The presettable switch also includes a low limit temperature signal input. An auxiliary output may drive a humidity controller having a conditioning channel and a humidity channel. The humidity controller includes an interlock network connected to transfer the humidity input signal to the conditioning channel and a switch means controlled by the auxiliary output of the temperature controller.
REFERENCES:
patent: Re20088 (1936-09-01), Fleisher
patent: 1840565 (1932-01-01), Buensod
patent: 2257462 (1941-09-01), Gildersleeve et al.
patent: 2787128 (1957-04-01), Brown
patent: 2837286 (1958-06-01), Ross
patent: 3913344 (1975-10-01), Holloway et al.
Bramow Scott B.
Laakaniemi Richard N.
Wichman Paul E.
Johnson Controls Inc.
Tapolcai, Jr. William E.
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