Dew preventing device for air conditioners

Details Dew preventing device for air conditioners Dew preventing device for air conditioners

1995-07-31

1998-07-07

Jeffery, John A.

Electric resistance heating devices

Heating devices

Continuous flow type fluid heater

62 80, 621766, 621762, F24F 1306, F24F 1102

Patent

active

057781478

ABSTRACT:
A dew preventing mechanism prevents the formation of dew on the grilles of an air discharge port of a room air conditioner by activating a heater which heats the grilles in response to the sensing of certain dew-forming conditions. The air conditioner includes thermistors for sensing the temperatures of incoming room air and outgoing cooled air, respectively, and a hygrometer for sensing the humidity of incoming room air. Signals proportional to those temperatures and humidity are sent to a control device which calculates the dew point of the incoming room air and compares the humidity of the incoming air with a reference humidity. When the outgoing air temperature is less than the dew point, and/or the incoming air humidity exceeds the reference humidity, the heater is actuated.

REFERENCES:
patent: 4482007 (1984-11-01), Yoshimi et al.
patent: 4862701 (1989-09-01), Small et al.
patent: 4903501 (1990-02-01), Harl
patent: 5163503 (1992-11-01), Inoue
patent: 5657636 (1997-08-01), Suggs

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