Engine Room Air Cleaner Layout for Cooling and Noise Control
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Solution Overview
Problem
The arrangement of the air cleaner facing the ventilation holes in construction machines disrupts air flow, reducing cooling efficiency of the radiator and oil cooler, and intake noise leaks out through the ventilation holes, causing operational noise.
Innovation Solution
The construction machine is designed with an air cleaner positioned between the heat exchanger and ventilation part, featuring a shielding plate part and a suction port adjacent to the shielding plate, with the outside air introduction part facing the floor surface, and the air cleaner is arranged vertically with a downward inclination to optimize airflow and noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the air cleaner is arranged facing the ventilation holes, then the air cleaner can intake outside air directly, but the air flow is disturbed and cooling efficiency of the heat exchanger is reduced
Solution Approach 1:
The air cleaner is repositioned from a horizontal arrangement facing the ventilation holes to a vertical arrangement between the heat exchanger and ventilation part. This dimensional change allows the air cleaner to intake air from the side without blocking the vertical airflow path to the heat exchanger, resolving the conflict between air intake and cooling efficiency
2Device complexity
If the air cleaner is arranged facing the ventilation holes, then the air cleaner can be simply positioned, but intake noise leaks out through the ventilation holes causing operational noise
Solution Approach 1:
A noise prevention plate is introduced as an intermediary element between the air cleaner and the ventilation holes. This plate blocks the direct path of noise transmission while allowing the air cleaner to maintain its functional position, thus reducing operational noise without significantly complicating the overall arrangement
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration improves cooling efficiency of the heat exchanger and reduces noise by shielding intake noise and directing airflow efficiently to the heat exchanger while minimizing filter element deterioration.
Implementation Method 1
a heat exchanger for cooling fluids such as engine cooling water and an air cleaner for purifying air supplied to an engine are arranged in an engine room
Implementation Method 2
an air cleaner for purifying air supplied to an engine
Data Source
AI summary
To provide a construction machine capable of improving cooling efficiency of a heat exchanger and reducing noise in a configuration in which a prime mover, a heat exchanger, and an air cleaner for supplying clean air to the prime mover are arranged in an engine room. The excavation work machine comprises an engine room provided on a swivel frame and housing equipment including an engine and a heat exchange unit, a ventilation part provided on a right exterior cover forming a side wall of the engine room and having a plurality of ventilation holes for communicating inside and outside of the engine room, and an air cleaner arranged between the heat exchange unit and the ventilation part in the engine room, and supplying cleaned air to the engine.