Exhaust Air Guide for Construction Machine Engine Room
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Solution Overview
Problem
Conventional construction machines with engine rooms suffer from deteriorated air flow and increased noise due to the collision of exhaust airs through the first and second exhaust ports, leading to reduced cooling performance and noise transmission.
Innovation Solution
An exhaust air guide is introduced to change the flow direction of exhaust air from the first exhaust port into an upward direction, preventing collisions with the second exhaust port and enhancing cooling flow rates while reducing noise transmission by redirecting sound outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the first exhaust port is opened in a horizontal direction and the second exhaust port is opened upward in proximity, then the structure is compact, but the exhaust airs collide and cooling performance deteriorates
Solution Approach 1:
An exhaust air guide is introduced as an intermediary component between the first and second exhaust ports. This guide redirects the exhaust air from the first exhaust port upward, preventing it from colliding with the exhaust air from the second exhaust port, thereby maintaining smooth airflow and cooling performance while preserving the compact engine room structure.
2Device complexity
If the first exhaust port is opened horizontally, then the structure is simple, but noise is transmitted to the exterior
Solution Approach 1:
The exhaust air guide serves as a mediator that redirects exhaust air and associated noise upward away from the exterior. This simple structural addition effectively reduces noise transmission to the exterior while maintaining the simplicity of the exhaust port structure.
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
The solution improves cooling performance by smoothing exhaust air flows and reduces noise transmission to the exterior, enhancing the overall operational efficiency of the construction machine.
Implementation Method 1
a cooling fan (8) which is installed in the engine room (5) and sucks an air for cooling from an exterior of the construction machine into the engine room (5)
Implementation Method 2
a heat exchanger (7) which is installed in the engine room (5)
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
Disclosed is a construction machine comprising an engine room (5) having first (15) and second (16) exhaust ports, preventing deterioration of air flows due to collision of exhaust airs through the first (15) and the second (16) exhaust ports, and reducing noise transmission on lateral sides of the construction machine. The construction machine comprises an engine guard (4) surrounding an engine room (5); an engine (6), a heat exchanger (7), and a cooling fan (8), which are installed in the engine room (5); and an exhaust air guide (19). The engine guard (4) is formed with exhaust ports including the first (15) and second (16) exhaust ports. The first (15) is opened in parallel to an axial direction of an engine output shaft (6a). The second (16) is formed in proximity to the first exhaust port (15) downstream of the first exhaust port (15) with respect to a direction parallel to the axial direction of the engine output shaft (6a) and opened upward below the first exhaust port (15). The exhaust air guide (19) has a shape to change a flow direction of the air discharged through the first exhaust port (15) in parallel to the axial direction of the engine output shaft (6a) into an upward direction at a position upstream of the second exhaust port (16).