AUTOMATIC VENTILATOR FOR BALCONY

摘要

An automatic ventilation device of a balcony is provided to prevent dews from being generated on the indoor wall due to difference between outdoor and indoor temperature/humidity and quickly lowered temperature potential at a limitedly exposed space like a balcony and by ventilating air around the balcony or inducing outdoor air into the indoor space. An automatic ventilation device of a balcony consists of a humidity sensor(2) and a temperature sensor(4) mounted/disposed on the indoor wall of the balcony; a humidity comparer(8) and a temperature comparer(10) comparing each detected value of the humidity sensor and the temperature sensor with a standard level to allow to a first end gate input group(14); a relative humidity sensor(6) mounted/disposed at the indoor wall of the balcony to compare detected values with a standard level of a relative humidity comparer(12) so as to output from the temperature comparer and to allow to a second end gate input group(16); a microcomputer(18) allowing signals of the first or second end gate output groups to symmetrically operate a pair of three-phase relays(20a,20b); and a fan motor(22) rotated forward by output signals of the first end gate and rotated reversely by output signals of the second end gate.