Pneumatic switch control for pneumatic actuator in air condition

Details Pneumatic switch control for pneumatic actuator in air condition Pneumatic switch control for pneumatic actuator in air condition

1979-08-02

1981-04-14

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

1374875, 236 84, 236 46F, F24F 700, F16K 3112

Patent

active

042615097

ABSTRACT:
Heating, ventilating and air conditioning control systems commonly use pneumatic actuators. A digital logic control has first and second output ports applied to control the actuator through dual channels, including an air supply channel and an air exhaust channel. Various sensed and related input signals are processed by the logic device and generate control signals at the control signal ports. Each channel includes an electrically controlled switch unit having an electrical operator and a pneumatic switch for controlling the flow to and from the pneumatic actuator. The switch may take the form of an electromagnetically actuated flow valve opening and closing a flow path from a supply or exhaust to the pneumatic actuator or, in the case of the supply channel, the form of a small electrically operated pump unit. The actuation of the actuator is controlled either on a time or frequency basis to set the actuator in the proper position. Pneumatic restrictor means in output lines to the actuator provide fluid rate control to and from the actuator.

REFERENCES:
patent: 2411834 (1946-11-01), Parsons
patent: 3269689 (1966-08-01), Lee
patent: 3307824 (1967-03-01), Weisheit
patent: 3369561 (1968-02-01), Zimmerman et al.
patent: 3411704 (1968-11-01), Hilgert et al.
patent: 3914581 (1975-10-01), Gilson

Affiliated with

Also associated with

Rating

Pneumatic switch control for pneumatic actuator in air condition does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pneumatic switch control for pneumatic actuator in air condition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pneumatic switch control for pneumatic actuator in air condition will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-155129