| 摘要 |
PURPOSE:To prevent any confusion in an air supplying system and an air discharging system during their installing operation and to increase an amount of ventilation air through a bypassing operation by a method wherein each of entrance or exit port of an air discharging passage, an air discharging blower, an entrance or exit port of an air supplying passage and an air supplying blower are arranged in a substantial linear form and a bypassing passage over a working fluid passage of each of heat exchangers is formed in each of the air discharging passage and the air supplying passage on these entrance or exit port lines and then dampers are provided. CONSTITUTION:Each of bypassing passages 13 and 14 is closed by each of changing-over dampers 15 and 16. An air discharging blower 1 and an air supplying blower 3 are operated. A heat exchanging and air ventilation can be carried out accompanying with a heat exchanging operation between an air supplying and an air discharging under an operation of a heat exchanger 6. After this operation, as each of the bypassings 13 and 14 is released with each of changing-over dampers 15 and 16, the discharged flow passes linearly in the linear bypass 13, the air is blown out of the air blowing port 10 without reducing an amount of air. The supply air flow may also pass through the linear bypass 14 in a linear manner and blown out of the air supplying port 12 without reducing any air volume. This air supplying or air discharging is performed linearly and its pressure loss is also less and the air volume is high. However, no heat exchanging is carried out between the air supplying and air discharging operations. |
