To provide a construction machine that can control the amount of fuel consumed by an engine, while a cooling fan is shared by an air conditioner and devices other than the air conditioner.
The construction machine includes: a first heat exchanger of the air conditioner; a second heat exchanger of the devices other than the air conditioner; a temperature sensor for detecting a temperature of a cooling fluid exchanging heat in the second heat exchanger; the cooling fan for cooling the first and second heat exchangers; a hydraulic motor for driving the cooling fan; a flow rate regulator for regulating the amount of hydraulic oil flowing to the hydraulic motor; a target rotational frequency setting device 84 for setting a target rotational frequency of the cooling fan based on a detection value of the temperature sensor and an operation mode of the air conditioner in cooling operation; and a control command generator 85 for generating a control command corresponding to the target rotational frequency that is set by the target rotational frequency setting device 84.
ISHIKAWA HISAYOSHI
KONDO SHINYA
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