COOLING STRUCTURE OF CONSTRUCTION MACHINE

摘要

[PROBLEMS] To increase soundproof performance of a cooling structure of a construction machine on an intake side without increasing the size of an intake chamber. [MEANS FOR SOLVING PROBLEMS] The intake chamber (16) is formed in an engine room (12) on the intake side of a heat exchanger (15), and a first intake port (17) is formed in the upper surface part of the intake chamber (16). An independent duct (18) as a shielding member is installed in the intake chamber (16) so as to surround airtight the core surface (15a) of the heat exchanger (15) from the periphery and the inside of the intake chamber (16) can be partitioned into two chambers (16a) and (16b). A second intake port (23) is formed in the duct (18) to form the intake chamber (16) in a double duct structure so as to lead an air sucked from the first intake port (17) to the core surface (15a) of the heat exchanger through an intake passage bent in a roughly L-shape.