Heating ventilating and/or air conditioning system having a vari

Details Heating ventilating and/or air conditioning system having a vari Heating ventilating and/or air conditioning system having a vari

1994-12-13

1996-02-20

Wayner, William E.

Automatic temperature and humidity regulation

Humidity control

62186, 236 11, 236 493, 417 45, B01F 302, F04B 4906

Patent

active

054922739

ABSTRACT:
A system which drives an indoor blower of a heating, ventilating, and/or air conditioning (HVAC) system in response to a system control signal. The system control signal has a BLOWER DEMAND state and a BLOWER END DEMAND state. The system comprises a motor having a stationary assembly and a rotatable assembly. The rotatable assembly is in magnetic coupling relation to the stationary assembly and in driving relation to the indoor blower. The system controls in response to the system control signal the rate of air flow of the HVAC system. The system operates at a first air flow rate in response to the BLOWER DEMAND state of the system control signal and operates at a second air flow rate greater than the first air flow rate when the BLOWER DEMAND state has been present for a first period of time. Alternately, the motor operates at a third air flow rate less than the first air flow rate for a second period of time in response to the BLOWER END DEMAND state of the system control signal.

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