BATHROOM VENTILATING SYSTEM COMBINED WITH FUNCION OF VENTILATING A BALCONY

摘要

A bathroom ventilation system is provided to prevent dew condensation as well as to perform ventilation by employing a balcony dew condensation prevention unit. A bathroom ventilation system comprises a bathroom air exhaust grill(10), an air exhaust grill(50), a duct(20) which is installed on the bathroom ceiling to protrude to the balcony and in which an exhaust fan(70) is installed, a humidity sensor(30) detecting the humidity of the balcony, a control panel controlling the driving of the exhaust fan and the opening and closing of the intake port of balcony and bathroom according to the electric signal generated by a bathroom switch, a direction conversion damper(40) which opens closes the balcony intake port with a forward and reverse rotation motor according to the control of the control panel, a limit switch stopping the operation of the forward and reverse rotation motor, a backflow prevention damper which is installed within the exhaust duct to cut off the inflow of the external air, and an external ventilation cap(80) which is installed on the end of the exhaust duct to prevent the inflow of rainwater and foreign material.