Indoor unit of air conditioiner

Abstract

The present invention intends to reduce the size of an indoor unit of an air conditioner installed on a ceiling, while saving space for holding dust removed from a filter. A rotating brush ( 61 ) is provided for removing dust trapped on a filter ( 21 ) arranged on an inlet side of an indoor fan ( 13 ). Space for retaining the dust removed by the rotating brush ( 61 ) is provided in a center cover ( 17 ) for covering a room-facing side of the filter ( 21 ).

1 . An indoor unit of an air conditioner comprising:
 a casing ( 11 ) installed on a ceiling:   an indoor fan ( 13 ) accommodated in the casing ( 11 );   an air filter ( 21 ) arranged on an inlet side of the indoor fan ( 13 );   a cover portion ( 17   e ) arranged to cover a room-facing side of the air filter ( 21 ); and   a dust removing means ( 61 ) configured to remove dust trapped on the air filter ( 21 ), wherein   a container portion ( 17   a ) for holding the dust removed from the air filter ( 21 ) by the dust removing means ( 61 ) is provided on the cover portion ( 17   e ).   
     
     
         2 . The indoor unit of the air conditioner of  claim 1 , wherein the container portion ( 17   a ) is integrated with the cover portion ( 17   e ). 
     
     
         3 . The indoor unit of the air conditioner of  claim 1 , wherein the container portion ( 101   a ) is detachable from the cover portion ( 101   b ). 
     
     
         4 . The indoor unit of the air conditioner of  claim 2  or  3 , wherein
 the container portion ( 17   a ) is in the shape of a box, and an opening ( 17   b ) is formed in a top surface thereof, and 
 the dust removing means ( 61 ) is configured so that the dust is held in the container portion ( 17   a ) through the opening ( 17   b ). 
 
     
     
         5 . The indoor unit of the air conditioner of  claim 4 , wherein the dust removing means ( 61 ) is arranged in the opening ( 17   b ). 
     
     
         6 . The indoor unit of the air conditioner of  claim 4 , wherein
 the opening ( 17   b ) of the container portion ( 17   a ) is located in a center part of the cover portion ( 17   e ) when viewed in plan.   
     
     
         7 . The indoor unit of the air conditioner of  claim 4 , wherein
 the top surface of the container portion ( 17   a ) has an upward inclination from sides to the center part of the cover portion ( 17   e ).   
     
     
         8 . The indoor unit of the air conditioner of  claim 4 , wherein
 the container portion ( 17   a ) is provided with a removal, port portion ( 17   c ) through which the dust held in the container portion ( 17   a ) is removed.   
     
     
         9 . The indoor unit of the air conditioner of  claim 1 , further comprising:
 a lifting/lowering means ( 70 ) configured to lift/lower the cover portion ( 17   e ).   
     
     
         10 . The indoor unit of the air conditioner of  claim 9 , wherein
 the lifting/lowering means ( 70 ) is configured to lift/lower the cover portion ( 17   e ) in a substantially horizontal state.   
     
     
         11 . The indoor unit of the air conditioner of  claim 9 , wherein
 the container portion ( 17   a ) is provided with a removal port portion ( 81 ) through which the dust held in the container portion ( 17   a ) is removed, and an openable removal port cover ( 82 ) for covering the removal port portion ( 81 ), and   the lifting/lowering means ( 70 ) is configured to lift/lower the cover portion ( 17   e ) in an inclined state so that the dust is gathered to the removal port portion ( 81 ).