| 摘要 |
PURPOSE:To enable quick and easy execution of operations for cleaning, replacement, etc., of a filter by a construction wherein an air intake port is formed on the upstream side of a condenser and also an air passage for passing air is formed between this air intake port and the condenser. CONSTITUTION:A filtering device 44 is constructed of a filter 31, an air passage 39 and a support mechanism 43 and an air intake port 38 is formed on the upstream side of a condenser 21, while the filter 31 is so supported on the front side of the lower part of a case main body 3 as to be removable from a leg part 7 and the outside of a case. Air taken in from outside of the leg part 37 through the air intake port 38 is passed through the air passage 39 and blown against the outer peripheral surface of the condenser 21. Therefore the air of which the content of dust is reduced can be taken inside of the leg part 37 through the air intake port 38 by sending it by a blower 22, and the frequency of operations for cleaning, replacement, etc., of the filter 31 can be made smaller than usual. |
