DEVICE FOR WARNING OF REPLACEMENT OF AIR FILTER OF AIR CONDITIONING SYSTEM

摘要

PURPOSE: A device for warning of replacement of air filter of air conditioning system is provided to supply sufficient air by folding the air filter and to inform a driver that the air filter is to be replaced when the air filter is polluted more than fixed level. CONSTITUTION: A pair of guides(11) are installed in an air duct to perpendicularly face flowing direction of fluid and have a bellows filter element(12) installed thereon and connected with a driving motor(20) installed on the filter element and controlled by a controller driving the driving motor and lighting up a warning lamp(32) according to fluctuation of flowing amount of fluid passing an air filter(10) to selectively filter element.