Patent ID: 7555914

Claim:
A filter cleaning mechanism for cleaning a main filter of an air-conditioning unit comprising: a bearing ( 50 ); a casing ( 52 ) housing the bearing; a drive mechanism ( 5 ) attached to the casing configured to move the casing between two positions; a rotative brush ( 70 ) having first and second ends, the bearing is connected to the first end of the rotative brush; outer portions of the rotative brush are configured to be in contact with a main filter ( 700 ) of an air-conditioning unit such that when the casing is moved by the drive mechanism, debris on such filter is brushed away; and a pair of debris pans ( 80 ) configured for receiving debris removed by the rotative brush, the debris pans are hinged to the casing such that when the drive mechanism moves the casing to one of the two positions of the casing, a respective one of the debris pans rotates at its hinge and forms a gap between the pair of debris pans in order to allow debris to fall through the gap.