FILTER CONTAMINATION DETECTOR AND AIR CONDITIONER EQUIPPED WITH FILTER

摘要

PROBLEM TO BE SOLVED: To obtain a filter contamination detector capable of letting highly practical filter maintenance timing know on the basis of a contamination degree of air and an operation time. SOLUTION: A contamination detecting sensor 5 detecting the contamination of air caused by dust or tobacco smoke and having detection output function corresponding to a contamination degree and a control circuit portion 1 operating the contamination coefficient corresponding to the contamination degree of air on the basis of the detection output of the contamination detecting sensor 5 at a time of the operation of a blower and multiplying the contamination coefficient by the operation time of the blower to operate an integrated operation time are provided to an air conditioner equipped with the blower and an air cleaning filter 2 for cleaning the air stream due to the blower and, when this integrated operation time reaches a predetermined value, the contamination of the filter is let known by an alarm 4.