| 摘要 |
<p>PROBLEM TO BE SOLVED: To prolong a time interval for dust removal for an internal instrument and reduce the cost. SOLUTION: A first air filter 19 is horizontally disposed at a boundary between an air intake chamber 12 and a fan chamber 13 such that a front panel 26 is easily taken out without its being demounted. A second air filter 23 is horizontally disposed on an upper part of a blowoff outlet 22 of a fan 15 in a heat exchange chamber 14 and behind a drain pan 25 such that the front panel 26 can not be taken out without its being demounted. Thus, even when the first air filter 19 is demounted owing to mischief, air containing dust taken in from the inside of a room is prevented from being sent intactly to an internal instrument of a heat exchanger 16, and hence a time interval for dust removal for the internal instrument is prolonged and the cost of dust removal for the internal instrument is reduced.</p> |
