| 摘要 |
<p>PURPOSE:To enable indoor air environment to be held in a clean stata, by a method wherein a clean air, fed to an inner chamber, and a contaminated air fed to the outside of a chamber are caused to flow in a specified direction. CONSTITUTION:A clean air, fed through a supply port 13 in a ceiling to the interior of an inner chamber 11, is sucked through a communicating port 12 in the lower part of an inner wall B into a gap C. The clean air, flowing through a space betweenwalls A and B, is sucked through a supply port 18 into a bossom Ca of a ceiling, and is guided through a ventilating duct 20 to an air cleaning device 15 where ammonia is removed by an alkalic gas absorbing filter 27. The open air, introduced through an open air duct 30, is freed of relatively large powdery dust by means of a coarse dust filter 28, and is freed of acid gas, such as NO2, SO2, by means of an acid gas absorbing filter 29. After the airs are mixed together and are freed of fine powdery dust by means of a fine dust filter 29, the air is guided to an air conditioner 14 with the aid of a fan 22, and is fed through a feed air duct 17 to the interior of the inner chamber 11. This enables the inner chamber 11 to be always maintained in clean air environment.</p> |
