| CPC A47L 9/2815 (2013.01) [A47L 5/24 (2013.01); A47L 9/1641 (2013.01)] | 19 Claims |
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1. A cleaner comprising:
a suction flow path configured to receive air from an outside of the cleaner;
a dust separation unit configured to receive the air through the suction flow path and to separate dust in the air;
a fan module configured to move the air in the suction flow path; and
a dust sensor configured to measure a concentration of dust in the suction flow path,
wherein the suction flow path comprises:
a first suction flow path that extends in a first direction parallel to a horizontal cross-section plane orthogonal to a rotation axis of the fan module, and
a second suction flow path that extends in a second direction parallel to the horizontal cross-section plane and connects the first suction flow path to the dust separation unit, the second direction defining an obtuse angle on the horizontal cross-section plane with respect to the first direction,
wherein the cleaner further comprises a flap door rotatably disposed in the second suction flow path and configured to open and close the second suction flow path based on an air pressure in the second suction flow path,
wherein a central axis of the first suction flow path extends on the horizontal cross-section plane in the first direction and intersects the flap door,
wherein the second suction flow path on the horizontal cross-section plane is defined between a first surface of the flap door and a second surface of the cleaner that does not intersect the central axis of the first suction flow path,
wherein the dust sensor is disposed along the first surface in the second suction flow path, and
wherein the dust sensor is disposed closer to the first suction flow path than to the flap door.
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