Cooling structure of construction machine

摘要

An engine (23), a cooling fan (24) and a heat exchanger (25) are disposed within an engine room (22) covered with a cover member (21), while an intake chamber (26) is formed on an intake side of the heat exchanger. A first intake port (27) is formed in an upper chamber wall of the intake chamber and a duct (28) is disposed on a front face side of a heat exchanger core surface (25a) in the intake chamber. In a cooling structure of a construction machine which premises the above construction, a front face portion (33) of the duct is inclined in a direction in which the sectional area of an intake passage formed between the duct front face portion and a side face portion of the cover member becomes maximum at the upper portion and decreases gradually toward the lower portion, and a second intake port (34) is formed in a lower half of the front face portion.