ENGINE ROOM FOR CONSTRUCTION EQUIPMENT

• US 20090235879A1
• Filed: 03/12/2009
• Published: 09/24/2009
• Est. Priority Date: 03/18/2008
• Status: Active Grant

• Current Assignee: Volvo Construction Equipment Holding Sweden AB
• Original Assignee: Volvo Construction Equipment Holding Sweden AB
• Inventors: Yuk, Wook Sung, Cho, Gyeng Soo, Ikeda, Toshimichi
• Granted Patent: US 8,196,555 B2
• Time in Patent Office: Days
• US Class Current: 123/41.490
• CPC Class Codes: E02F 9/00 Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00 laying-out or take-up devices for trailing electric cables B66C
• CPC Class Codes: E02F 9/0866 Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment

Abstract

An engine room for construction equipment is provided, which can minimize emission of noise generated in an engine room due to driving of an engine and a ventilating fan to an outside of the engine room by absorbing the noise through a noise trap, and can improve the cooling performance of corresponding components by smoothing inhalation/discharge of an external air to/from the airtight engine room. The engine room for construction equipment includes a radiator cooling water for cooling the engine, a muffler discharging an exhaust gas from an engine to the atmosphere, a first noise trap installed in an inlet port to absorb noise generated in the engine room and emitted to an outside, a second noise trap installed in an outlet port to absorb the noise generated in the engine room and emitted to the outside, a radiator fan inhaling the external air through the first noise trap and making the inhaled external air pass through the radiator and the circumference of the engine, a discharge fan discharging the air in the engine room to the outside through the second noise trap, and an outer wall forming an airtight space for accommodating therein the engine, the muffler, the radiator fan, the hydraulic pump, and the discharge fan that generate the noise.

Claims

1. An engine room for construction equipment having an engine, a hydraulic pump connected to the engine, an inlet port inhaling an external air into an engine room, and an outlet port discharging the air in the engine room to an outside, the engine room comprising:

a radiator cooling water for cooling the engine;

a muffler discharging an exhaust gas from the engine to the atmosphere;

a first noise trap installed in the inlet port to absorb noise generated in the engine room and emitted to the outside to shield and attenuate the noise;

a second noise trap installed in the outlet port to absorb the noise generated in the engine room and emitted to the outside to shield and attenuate the noise;

a radiator fan inhaling the external air through the first noise trap and making the inhaled external air pass through the radiator and the circumference of the engine during rotation;

a discharge fan discharging the air in the engine room to the outside through the second noise trap during rotation; and

an outer wall forming an airtight space for accommodating therein the engine, the muffler, the radiator fan, the hydraulic pump, and the discharge fan that generate the noise during driving.

4. The engine room of claim 1, wherein the radiator fan and the discharge fan are installed in the same line so that, even if one of the radiator fan and the discharge fan becomes inoperable during operation, the other thereof operates to inhale and discharge the external air.

7. The engine room of claim 1, wherein the engine room is mounted on an excavator of the construction equipment.

2. An engine room for construction equipment having an engine, a hydraulic pump connected to the engine, an inlet port inhaling an external air into an engine room, and an outlet port discharging the air in the engine room to an outside, the engine room comprising:

a radiator cooling water for cooling the engine;

an oil cooler cooling hydraulic fluid discharged from the hydraulic pump;

an oil cooler fan making the air in the engine room pass through the oil cooler and discharging the air having passed through the oil cooler to the outside during rotation;

a muffler discharging an exhaust gas from the engine to the atmosphere;

a first noise trap installed in the inlet port to absorb noise generated in the engine room and emitted to the outside to shield and attenuate the noise;

a second noise trap installed in the outlet port to absorb the noise generated in the engine room and emitted to the outside to shield and attenuate the noise;

a radiator fan inhaling the external air through the first noise trap and making the inhaled external air pass through the radiator and the circumference of the engine during rotation;

a discharge fan discharging the air in the engine room to the outside through the second noise trap during rotation;

an outer wall forming an airtight space for accommodating therein the engine, the muffler, the radiator fan, the hydraulic pump, the discharge fan, and the oil cooler fan that generate the noise during driving; and

a third noise trap installed on the outer wall of the engine room to face the oil cooler, the third noise trap absorbing the noise passing through the oil cooler and being emitted to the outside to shield and attenuate the noise.

3. The engine room of claim 2, wherein an outlet port side of the muffler is installed in the engine room.

8. The engine room of claim 2, wherein the engine room is mounted on an excavator of the construction equipment.

5. An engine room for construction equipment having an engine, a hydraulic pump connected to the engine, an inlet port inhaling an external air into an engine room, and an outlet port discharging the air in the engine room to an outside, the engine room comprising:

a radiator cooling water for cooling the engine;

an oil cooler cooling hydraulic fluid discharged from the hydraulic pump;

an oil cooler fan making the air in the engine room pass through the oil cooler and discharging the air having passed through the oil cooler to the outside during rotation;

a muffler discharging an exhaust gas from the engine to the atmosphere;

a first noise trap installed in the inlet port to absorb noise generated in the engine room and emitted to the outside to shield and attenuate the noise;

a radiator fan inhaling the external air through the first noise trap and making the inhaled external air pass through the radiator and the circumference of the engine during rotation;

a third noise trap installed on an outer wall of the engine room to face the oil cooler, the third noise trap absorbing the noise passing through the oil cooler and being emitted to the outside to shield and attenuate the noise;

a discharge fan discharging the air in the engine room to the outside through a duct during rotation;

the outer wall forming an airtight space for accommodating therein the engine, the muffler, the radiator fan, the hydraulic pump, the discharge fan, and the oil cooler fan that generate the noise during driving;

a fourth noise trap installed in the duct connected to the discharge fan, the fourth noise trap absorbing the noise emitted to the outside through the duct to shield and attenuate the noise; and

a fifth noise trap installed on an outlet side of the duct, the fifth noise trap absorbing the noise emitted during the discharge of the exhaust gas from the muffler to the outside through the duct to shield and attenuate the noise.

6. The engine room of claim 5, wherein the discharge fan is a centrifugal blower.

9. The engine room of claim 5 wherein the engine room is mounted on an excavator of the construction equipment.