| 摘要 |
PROBLEM TO BE SOLVED: To install equipment and the like in a duct with an allowance by largely increasing the size of a lower part space in the duct. SOLUTION: In an engine room 22, an engine 23, a heat exchanger 25 and a cooling fan 24 are provided so that the heat exchanger 25 may be located on the most upstream side of an air flow, and external air is sucked into the engine room 22 by the rotation of the cooling fan 24 to pass the air through the heat exchanger 25. An intake chamber 26 and the duct 28 are provided on an intake side of the engine room 22 and on a front surface side of the heat exchanger 25, respectively, and an intake port 27 is provided on the upper surface of the intake chamber 26. On the premise of this constitution, a duct front part 33 is inclined downward toward the opposite side of the heat exchanger 25, the inclined surface is formed to be stepwise, and opening parts 34, 34 for intake and filters 35, 35 for dust prevention are provided on a surface of each step opposed to the air flow. COPYRIGHT: (C)2011,JPO&INPIT |
