Automatic temperature and humidity regulation – Ventilator type
Patent
1979-05-07
1981-09-29
Tapolcai, Jr., William E.
Automatic temperature and humidity regulation
Ventilator type
236 80R, F24F 706
Patent
active
042918324
ABSTRACT:
A variable air flow volume conditioned air distribution system of the kind having an air flow duct for supplying conditioned air to a room and a valve in the duct for regulating the volume of air flowing through the duct has a controller which senses the flow velocity in the duct and the room temperature in the room.
The controller combines a temperature signal with a flow velocity signal through a velocity spring. A temperature change resets the flow velocity set point and produces a corresponding change in the volume flow through the duct.
The controller includes an adjustable bias for the velocity spring for varying the rate of the velocity spring from a low spring rate for control at a low maximum permitted flow velocity in the duct to a higher spring rate for control at a higher permitted maximum flow velocity flow in the duct and vice versa.
REFERENCES:
patent: 3806027 (1974-04-01), Ginn et al.
patent: 3924651 (1975-12-01), Hippel et al.
patent: 3941310 (1976-03-01), Travaglio et al.
patent: 4007873 (1977-02-01), Duchek
patent: 4041173 (1977-08-01), Boyer et al.
patent: 4077567 (1978-03-01), Ginn et al.
patent: 4130132 (1978-12-01), Cote
patent: 4141496 (1979-02-01), Duchek
Ginn Le Roy D.
Ginn Le Royce S.
Morris John C.
Travaglio Dalny
Feix Donald C.
Tapolcai, Jr. William E.
Universal Pneumatic Controls, Inc.
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