Construction machine
AssigneeHitachi Construction Machinery Co., Ltd.
InventorsAtsushi Ogata, Takafumi Arakawa
Life of this patent
Estimating the term…
Abstract
There is provided a construction machine including an electrically driven motor that serves as a power source, a heat exchanger, a fuel cell that generates power to be provided to the electrically driven motor, a cooling fan that blows cooling air to the heat exchanger, and a fan controller that controls rotation of the cooling fan. In the construction machine, a hydrogen gas detection sensor is provided in a machine room in which the heat exchanger, the fuel cell, and the cooling fan are disposed, and the fan controller raises a rotation speed of the cooling fan when the hydrogen gas detection sensor has detected a hydrogen gas.
Claims7
A construction machine comprising:
- an electrically driven motor that serves as a power source;
- a fuel cell that generates power to be provided to the electrically driven motor;
- a hydrogen tank filled with a hydrogen gas to be supplied to the fuel cell;
- a hydraulic actuator driven by a hydraulic operating fluid delivered from a hydraulic pump;
- a heat exchanger that cools a cooling water that cools the electrically driven motor, a cooling water that cools the fuel cell, and the hydraulic operating fluid that drives the hydraulic actuator;
- a cooling fan that blows cooling air to the heat exchanger;
- and
- a fan controller that controls rotation of the cooling fan, wherein
- a hydrogen gas detection sensor is provided in a machine room in which the heat exchanger, the fuel cell, the cooling fan, and the hydrogen tank are disposed,
- the fuel cell is adjacent to the cooling fan, and
- the fan controller is configured to raise a rotation speed of the cooling fan when the hydrogen gas detection sensor has detected a hydrogen gas.
Dependencies are inferred from the claim text.