Construction machine
AssigneeHitachi Construction Machinery Co., Ltd.
InventorsOsamu Watanabe, Seiichiro Takeshita, Takaharu Nishimura, Kazuyoshi Yamada, Makoto Sugaya, Makoto Motozu, Naohiro Ishikawa, Shougo Kimura
Life of this patent
Estimating the term…
Abstract
A construction machine of the present invention is provided, in a compartment formed by a cover, with an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a specified medium, wherein the centrifugal fan and the heat exchanger are arranged further upstream than the engine with respect to flow of cooling air, so that cooling air sucked in by the centrifugal fan is led to the engine after passing through the heat exchanger.
Claims17
A construction machine, comprising, in a compartment formed by a cover, an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a predetermined medium, and
- an operator's seat section that is offset to one side in a widthwise direction of the machine, wherein:
- the heat exchanger is arranged at an upstream side of the engine with respect to flow of cooling air and the centrifugal fan is arranged on an upstream side of the heat exchanger, so that cooling air sucked in by the centrifugal fan is led to the engine side after passing through the heat exchanger;
- the engine is provided behind the operator's seat section and at an operator's-seat-side in the widthwise direction of the machine, and
- the centrifugal fan is arranged to the opposite side of the engine with reference to the widthwise direction of the machine.
A construction machine comprising, in a compartment formed by a cover, an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a predetermined medium, wherein:
- the heat exchanger is arranged at an upstream side of the engine with respect to flow of cooling air and the centrifugal fan is arranged on an upstream side of the heat exhanger, so that cooling air sucked in by the centrifugal fan is led to the engine side after passing through the heat exchanger;
- a rotational shaft of the centrifugal fan is arranged substantially vertically with respect to a horizon, and
- the heat exchanger is arranged to a side of the centrifugal fan, with a duct for guiding cooling air from the centrifugal fan to the heat exchanger.
A construction machine comprising, in a compartment formed by a cover, an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a predetermined medium, wherein:
- the heat exchanger is arranged at an upstream side of the engine with respect to flow of cooling air and the centrifugal fan is arranged on an upstream side of the heat exhanger, so that cooling air sucked in by the centrifugal fan is led to the engine side after passing through the heat exchanger;
- a straightening vane is provided directly downstream of the heat exchanger with respect to the flow of cooling air, to change a flow of cooling air that has passed through the heat exchanger to a specified direction.
A construction machine, comprising, in a compartment formed by a cover, an engine, a centrifugal fan, and a heat exchanger for exchanging heat between cooling air blown by the centrifugal fan and a predetermined medium, wherein:
- the heat exchanger is arranged at an upstream side of the engine with respect to flow of cooling air and the centrifugal fan is arranged on an upstream side of the heat exhanger, so that cooling air sucked in by the centrifugal fan is led to the engine side after passing through the heat exchanger;
- a rotational shaft of the centrifugal fan is arranged substantially horizontally;
- the heat exchanger is arranged above the centrifugal fan, with a duct for directing cooling air from the centrifugal fan to the heat exchanger;
- and
- a straightening vane is provided directly downstream of the heat exchanger with respect to the flow of cooling air, to change a flow of cooling air that has passed through the heat exchanger to a specified direction.
Dependencies are inferred from the claim text.