Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1989-07-10
1990-12-04
Ford, John
Heat exchange
Movable heating or cooling surface
Rotary drum
165 24, 165 26, 165 20, 236 51, 236 44C, F24F 314, F25B 2900
Patent
active
049746650
ABSTRACT:
A system for HVAC and humidification includes a control signal source which supplies two distinct control signals over two wires of a four wire link. The control signals are supplied to a temperature control signal source and for a fan/humidity control signal source. The temperature control signal source generates a temperature control signal and transmits the temperature control signal to a temperature signal decoder by means of a third wire of the four wire link. The temperature signal decoder decodes the temperature control signal and turns on either a furnace or an air-conditioner. The furnace and the air-conditioner each have a connection to a fan so that the furnace and the air-conditioner can each signal the fan to blow the heated or cooled air into the living area. The fan/humidity control source operates independently of the temperature control signal source and generates a fan/humidity control signal for transmission over a fourth wire of the four wire link. The fan/humidity control signal is received over the fourth wire of the four wire link by a fan/humidity signal decoder. The signal decoder decodes the fan/humidity control signal and turns on either the fan or a humidifier. The humidifier has a connection to the fan enabling the humidifier to control the fan and blow humidified air into the living area.
REFERENCES:
patent: 2110025 (1938-03-01), Ridge
patent: 2133872 (1938-10-01), Roessler
patent: 3305173 (1967-02-01), Beckman
patent: 3815668 (1974-06-01), Carlson
patent: 3945564 (1976-03-01), Smallegan
patent: 4083397 (1978-04-01), Kimpel et al.
patent: 4186873 (1980-02-01), Geisler et al.
patent: 4290480 (1981-09-01), Sulkowski
patent: 4819716 (1989-04-01), Beachboard
patent: 4889179 (1989-12-01), Merenda
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