| 摘要 |
PURPOSE:To make a blowoff temperature controllable, by making a cab circulating mode and an outside air intake mode selectable, while setting one end of a heat pipe to a blowoff air passage and making up it so as to control the other end temperature. CONSTITUTION:Each of selector valves 17 and 20 is changed over to a full line position and a dotted line position, while selection for inside air circulation and ventilation takes place. These selector valves 17 and 20 are set down to the full line position, thereby making them into the inside air circulation, and when a selector valve 18 is set down to the full line position or a broken line position, temperature at an end part 12b of a heat pipe 12 is changed by air out of a heater or a cooler, thus the circulated air can be heated or cooled at the side of an end part 12a, when these selector valves 17 and 20 are set to the dotted line position and the outside air is taken in, the inside air 1 makes the outside air 19 approximate to room temperature via the heat pipe end parts 12b 12a. Thus, the air temperature emitted out of an air cleaner can be controlled. |
