| 摘要 |
PURPOSE:To make room air circulation and compulsory ventilation simultaneously wherein room inside and outside air is sucked, mixed and fed to a room, a portion thereof is discharged outside the room, while temperature and humidity exchange is made between the air passing through supply passages and the air passing through discharge passages. CONSTITUTION:Room air (a) and atmospheric air (b) are let flow through a suction passage 19 and through the supply passages 14 of a ventilation tube 6 respectively, led to an impeller 9 and fed to a room through the discharge port 5 of a box 1 for circulation. At the same time, a portion of mixture air (c) is discharged through the outdoor discharge port 15 of an outdoor discharge passage 20 placed in the fan discharge passage 11 of the box 1, outdoor discharge passages 17 and an outdoor discharge port 16. Therein, the air (b) being sucked by the passages 14 is adjusted close to the condition of the air (c) in the room through the heat exchange with the air (c) flowing through the passages 17 in the tube 6, led to an impeller 9 and fed to the room through the port 5. |
