AIR CLEANER HAVING FUNCTION TOLD ABOUT EXCHANGE TIME OF DIRT FILTER

摘要

PURPOSE: To provide an air cleaner which is comprised a function told about the exchange time of dirt filter by a measuring means of pressure difference that is perceiving a difference aspirating pressure and exhausting pressure, thereby preventing lowering of efficiency of dirt filter and maintaining always comfortable room environment. CONSTITUTION: In an air cleaner (10) which is comprised a sucking fan (50); motor (51) to rotate the sucking fan; controller to control the rotational frequency of the motor and dirt filter (20) to remove the dirt in air sucked by the sucking fan; the air cleaner which is more comprised a measuring means to display measuring the difference of air pressure of aspirator and air exhauster and display means to tell about the exchange time of dirt filter, the controller displays exchanging signal of dirt filter in the display means in case it is more than fixed value.