| 摘要 |
PURPOSE:To permit the supplying of comfortable cooling and/or heating air into a room at all times by forming a bypass ventilating passage, communicated with a ventilating passage, on the back of the U-shape ventilating passage. CONSTITUTION:A body is divided into a fore part and a rear part by a partitioning plate 6 at the center of the same and a bypass ventilating passage 14 is formed on the back side of a U-shape ventilating passage 5 while the passage 5 is communicated with an outdoor air introducing port 2, an air returning port 3 and respective ports of air sending ports 4, 4, 4 positioned at the upper part of the body 1. Further, one part of the bypass ventilating passage 14 is communicated with a communicating port 7, opened in the lower passage of the U-shape ventilating passage 5, to switch and conduct one part of air in the U-shape ventilating passage 5 into the bypass ventilating passage 14 side. According to this method, fresh outdoor air or one part or the total amount of indoor side returning air and the like can directly be supplied simultaneously with the supply of the cooling and/or heating air into a room without passing through the U-shape air-passage by switching respective dampers of air-flow switching dampers A, A, A. |
