HVAC low power usage circulation blower

Details HVAC low power usage circulation blower HVAC low power usage circulation blower

1991-01-18

1993-03-30

Sollecito, John

Automatic temperature and humidity regulation

Ventilator type

Electrically actuated

236DIG9, 62180, 62186, F24F 700

Patent

active

051976676

ABSTRACT:
A field installable device for a conventional heating and air conditioning system (HVAC) is provided which operates a blower fan in conjunction with a standard thermostat. Presently, HVAC systems operate in four modes: heating, cooling, off and fan "on". The device includes a multi-pole, multi-speed motor and a control operatively connected between the thermostat and the motor. With the fan switch in the "on" position and heating or cooling called for, the control causes the blower to operate at a high speed, which may be different for heating or cooling. When the pre-selected temperature is reached the particular thermal operation (i.e., heating or cooling) is stopped. The control switches the motor to a speed substantially slower than the operating condition speed to provide continuing air circulation until the thermostat again calls for thermal operation. With the switch in "auto" position, the blower operates similarly to present systems.

REFERENCES:
patent: 2884764 (1959-05-01), Siggelin
patent: 3877243 (1975-04-01), Kramer
patent: 4257238 (1981-03-01), Kountz et al.
patent: 4259847 (1981-04-01), Pearse, Jr.
patent: 4659290 (1987-04-01), Kundert
patent: 4815524 (1928-03-01), Dempsey et al.
patent: 5006744 (1991-04-01), Archer et al.

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