Multiple load integrated fluid control units

Details Multiple load integrated fluid control units Multiple load integrated fluid control units

1979-01-26

1980-04-22

Wayner, William E.

Automatic temperature and humidity regulation

Mixing fluid of dissimilar temperature

Plenum type

165 16, 236 49, G05D 2313

Patent

active

041991010

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: 2234633 (1941-03-01), Hoppe
patent: 2257462 (1941-09-01), Gildersleeve et al.
patent: 2290096 (1942-07-01), Dale et al.
patent: 2594477 (1952-04-01), Miner et al.
patent: 3193000 (1965-07-01), Bressoud
patent: 3967780 (1976-07-01), Traver
patent: 4044947 (1977-08-01), Spethmann

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