| 摘要 |
PURPOSE:To reduce the numberof parts, simplify the installation work, improve the circulation efficiency and saving the space by providing a housing having therein two blast passages, providing a filter for purifying air in one blast passage, and providing air passage switching means for selectively opening and closing one or both air passages. CONSTITUTION:An exhaust port 62 is provided on the upper surface of a housing 61, and a filter unit 63 is provided on the front surface in a drawable manner. A first suction port 64 is provided on the front surface of the filter unit 63. By drawing out the filter unit 63 this side, a second suction port 65 is opened. By the drive of a fan 68, air is sucked up from the second suction port 65, and exhausted out of an exhaust port 62. When the filter unit 63 is forced in, a second suction port 65 is opened. By the driving a fan 68, air is sucked up from the first suction port 64 through the filter 18, and is exhausted out of the exhaust port 62. In this case, air purification and air conditioning due to heat exchange are carried out. |
