Construction machine
AssigneeKobelco Construction Machinery Co., Ltd.
InventorMasaru Numasawa
Life of this patent
Estimating the term…
Abstract
In a construction machine having an engine room and capable of efficiently collecting air flowing in the engine room, a heat exchanger provided at a first side of the engine, and a fan provided at the first side and rotating to generate around the engine a flow of cooling air, further includes an exhaust duct extending in a fan axial direction parallel with a rotation axis of the fan along the engine. The exhaust duct guides the flow of the air to collect the air flowing downstream of the fan in the fan axial direction, in a region extending in the fan axial direction, and discharges the air to an outside of the engine room.
Claims8
A construction machine comprising:
- an engine room;
- an engine housed in the engine room;
- a heat exchanger provided at a first side as one side in a longitudinal direction of the engine;
- an axial-flow fan provided at the first side of the engine and adapted to be rotated to generate, around the engine, a flow of cooling air which enters the engine room from an outside of the engine room and passes through the heat exchanger, the flow containing respective direction components in a rotational direction, a centrifugal direction, and an axial direction, of the fan;
- and
- an exhaust duct having an air inlet opening and an air outlet opening and provided in the engine room so as to extend in a fan axial direction parallel with a rotation axis of the fan along the engine, the exhaust duct adapted to guide the flow of the air so as to collect the air, which flows at a downstream side of the fan in the fan axial direction, in a region extending in the fan axial direction and so as to discharge the air to an outside of the engine room,
- wherein the exhaust duct has the air inlet opening at an upper part thereof, the air inlet opening located at a position higher than a bottom of the engine, and has the air outlet opening at a lower part thereof at a position lower than the air inlet opening, the exhaust duct being disposed in front of or behind a lower part of the engine so as to suction the air flowing around the engine from above and discharge the air from below by matching a swirling direction of the flow of the air generated by the fan.
A construction machine comprising:
- an engine room;
- an engine housed in the engine room;
- a heat exchanger provided at a first side as one side in a longitudinal direction of the engine;
- an axial flow fan provided at the first side of the engine and adapted to be rotated to generate, around the engine, a flow of cooling air which enters the engine room from an outside of the engine room and passes through the heat exchanger, the flow containing respective direction components in a rotational direction, a centrifugal direction, and an axial direction, of the fan;
- an exhaust duct having an air inlet opening and an air outlet opening and provided in the engine room so as to extend in a fan axial direction parallel with a rotation axis of the fan along the engine, the exhaust duct adapted to guide the flow of the air so as to collect the air, which flows at a downstream side of the fan in the fan axial direction, in a region extending in the fan axial direction and so as to discharge the air to an outside of the engine room;
- an air guide member for collecting air having passed in the fan axial direction through a region in which the exhaust duct collects the air, at a downstream side of the region, and for guiding the air to the exhaust duct,
- a hydraulic pump provided at a second side of the engine opposite to the first side;
- and
- a pump cover for covering the hydraulic pump to shield at least a part of the hydraulic pump from the engine, the pump cover having an air inlet for taking in air flowing around the engine and an air outlet for discharging the taken-in air into the exhaust duct to function as the air guide member.
Dependencies are inferred from the claim text.