Cooling structure of construction machine

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein a shield plate is provided as the shield member so as to partition the space between the core surface and the first air intake port over the full width of the air intake chamber.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein a guide plate configured to guide air sucked from the first air intake port toward the second air intake port is provided between a duct and the first air intake port in the air intake chamber.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein a curtain plate is provided in the air intake chamber, in which a portion of the core surface of the heat exchanger can be directly seen from the outside through both the first and second air intake ports, so as to prevent the core surface portion from being directly seen from the outside.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein an air intake pipe projecting upward is provided on the first air intake port.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein a filter is installed on the shield member so as to cover the second air intake port.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein a counterweight, also serving as a covering material, is provided in the rear of the engine room, the counterweight having a shape such that both the left and right side portions thereof are curved toward the side ends of the engine room, and the inner surface of one side portion of its left and right portions facing to the air intake chamber is declined as an air guide surface configured to guide sucked air to the second air intake port.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein sound-absorbing material is attached on the wall surface of the air intake chamber.

A cooling structure of a construction machine equipped with an engine room in which an engine, a heat exchanger and a cooling fan are installed, and into which outside air is sucked by rotation of the cooling fan to be passed through the heat exchanger, the engine room being covered with a cover member,

• wherein an air intake chamber is formed in the air intake side of the heat exchanger by being separated from the other space in the engine room;
• a first air intake port open to the outside is provided in a chamber wall of the air intake chamber, the chamber wall being formed of the cover member;
• a shield member having a face opposing the core surface of the heat exchanger is provided in the front side of the core surface so as to partition the air intake chamber disposed between the core surface and the first air intake port into two chambers;
• and a second air intake port is provided in the face of the shield member opposing the core surface,
• wherein an air cleaner for filtering air supplied to the engine is provided in a heat exchanger-side chamber partitioned with the shield member in the air intake chamber.