Automatic temperature and humidity regulation – Thermostatic – Expanding solid
Patent
1984-03-12
1985-06-11
Joyce, Harold
Automatic temperature and humidity regulation
Thermostatic
Expanding solid
236 46R, 251 611, F24F 1100
Patent
active
045221162
ABSTRACT:
An activity zone of a house is selectively isolated with respect to a sleeping zone during nighttime intervals by selectively blocking the flow of conditioned air into the activity zone, while allowing the usual flow of conditioned air into the sleeping zone. The air flow passage in each supply duct is blocked by an inflatable air bladder disposed within the air flow passage. An air compressor is coupled to the bladder for inflating it to cause it to expand against the sidewall of the duct and seal the air flow passage during the isolation mode of operation, and for drawing air from the bladder to cause it to collapse and open the air flow passage during the conditioned air supply mode of operation. In the preferred embodiment, operation of the compressor is coordinated by a timer and a solenoid controlled, four-way valve which ports pressurized air to the bladders during a preprogrammed zone isolation interval, and directs the withdrawal of air from the bladders during a preprogrammed conditioned air supply interval. A pressure responsive power switch applies operating power to the compressor in response to compressor discharge port pressure being less than the pressure level corresponding with a fully inflated air bladder, and removes operating power from the compressor in response to the compressor inlet port pressure being less than the pressure level corresponding with the air bladder being in the collapsed condition.
REFERENCES:
patent: 2598207 (1952-05-01), Bailey et al.
patent: 3320750 (1967-05-01), Haise et al.
patent: 4147298 (1979-04-01), Leemhuis
patent: 4243174 (1981-01-01), Moeller et al.
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