Patent ID: 8631664

Claim:
An air conditioner comprising: a main unit cabinet that has at least an air inlet and a heat exchanger; a dust removal filter disposed at an initial position opposite the air inlet within the main unit cabinet; a cleaning unit provided within the main unit cabinet to remove dust adhering to the filter; and a movement apparatus provided within the main unit cabinet to move the filter, wherein the air inlet is formed from a front surface to an upper surface of the main unit cabinet; a filter travel channel for the filter that is reciprocally moved by the movement apparatus is provided in the main unit cabinet; the filter travel channel includes: a first guide channel for making a U-turn of a leading end of the filter at a front surface side of the main unit cabinet during forward movement of the filter towards the initial position; and a second guide channel, wherein the second guide channel guides for guiding a rear end of the filter from the initial position to a secondary position at a rear surface side of the main unit cabinet during backward movement of the filter; the cleaning unit includes, wherein the second guide channel extends along said rear surface side of the main unit cabinet: a dust box for removing dust adhering to the filter, and a cleaning brush moveable between a retracted position within the dust box and an extended position in contact with a surface of the filter, and wherein the movement apparatus is adapted to move the filter forward or backward, and movement of the filter causes the cleaning brush to move from the retracted position to the extended position.