| 摘要 |
Suction ports 4 and 6 and a blowoff port 9 are equipped on a ventilation passage between the suction ports 4 and 6 and blowoff port 9, a heat exchanger 10 and a blower 13 are arranged to an indoor unit proper 1, and air filters 11A and 11B are mounted between the suction port and the heat exchanger. In addition, a ventilation unit 15 which discharges indoor air to the outside is equipped, and air filters have a sweeping unit Z which removes dust adhering to the air filter surfaces and collects it in a dust box. The ventilation unit has a fan casing on which an intake port 31 and an exhaust port 32 are provided, an exhaust fan 35, and a connection hose 55 which communicates with a dust box of the sweeping unit and the ventilation unit, wherein the head end portion of the connection hose is connected to the outer circumferential portion upstream of the exhaust port of the fan casing. ® KIPO & WIPO 2008
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