Automatic temperature and humidity regulation – Ventilator type
Patent
1976-12-09
1978-08-22
Wayner, William E.
Automatic temperature and humidity regulation
Ventilator type
137499, 236 80E, F16K 3112, F24F 1104
Patent
active
041083717
ABSTRACT:
A variable value, constant volume fluid flow control device has damper means for regulating fluid flow through a conduit to a zone and damper control means for regulating the damper means comprising fluid supply means for diverting a portion of the fluid flow being controlled to the damper control means, transducer means having a first and a second chamber and being responsive to pressure differentials between the first and second chambers for moving the damper means, means for directing the portion of fluid flow to the first and second chambers, vent means for selectively venting either of the first and second chambers and vane means responsive to fluid flow velocity within the conduit for operating the vent means to operate the transducer means. Bias means are provided for biasing the vane means against a direction of the fluid flow through the conduit such that the vane means returns to a neutral position under conditions of optimum fluid flow velocity. Adjustable means are provided for calibrating the sensitivity of the vane means at an initial value relative to an optimum fluid flow velocity through the conduit. Temperature responsive means are provided for varying the value of the sensitivity of the bias means from an initial value in response to changes in temperature within the zone to which the fluid flow is being provided.
REFERENCES:
patent: 1466412 (1923-08-01), Samain
patent: 2812774 (1957-11-01), Anderson et al.
patent: 3402889 (1968-09-01), Willson
patent: 3511267 (1970-05-01), Stonich
patent: 3719321 (1973-03-01), McNabney
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