Curved Intake Tube Dust Separation for Construction Machine Cooling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Construction machines experience reduced working efficiency due to frequent cleaning of dust filters, which are clogged by large-diameter dust particles, leading to overheating and decreased air circulation in the heat exchanger.
Innovation Solution
The construction machine incorporates a curved intake tube with a dust receiving part that utilizes inertia to separate large-diameter dust particles from the air flow, preventing them from entering the heat exchanger and reducing the frequency of dust filter cleaning by collecting them in a dedicated dust receiving section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dust filter is disposed in the intake duct to capture dust particles, then the heat exchanger is protected from clogging, but the dust filter requires frequent cleaning which reduces working efficiency
Solution Approach 1:
The curved part of the intake tube performs preliminary dust separation before air enters the dust filter. By utilizing inertia forces in the curved flow path, large dust particles are separated and collected in the dust receiving part, reducing the dust load on the dust filter and extending its cleaning interval.
Solution Approach 2:
The curved part of the intake tube acts as an intermediary device between the intake port and the dust filter. It pre-processes the air flow by separating dust particles, thereby reducing the burden on the dust filter and maintaining its effectiveness for longer periods.
2Reliability
If the dust filter captures dust particles, then air circulation is maintained, but dust accumulation blocks the mesh and prevents normal air circulation causing overheating
Solution Approach 1:
The curved intake tube performs preliminary dust removal before air reaches the dust filter, reducing dust accumulation in the filter mesh. This maintains air circulation efficiency and prevents overheating by ensuring the dust filter remains effective for longer periods.
3Reliability
If a mesh with small hole size is used to capture small dust particles, then heat exchanger protection is improved, but the mesh clogs more quickly requiring frequent maintenance
Solution Approach 1:
The curved intake tube performs preliminary separation of large dust particles before air enters the dust filter. This reduces the dust load on the filter mesh, allowing it to maintain effectiveness with less frequent cleaning even when using fine mesh for small particle capture.
Solution Approach 2:
The dust separation process is segmented into two stages: first, large particle separation in the curved intake tube, and second, fine particle filtration in the dust filter. This segmentation allows each component to be optimized for its specific function, reducing overall maintenance frequency.
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 design effectively reduces the frequency of dust filter maintenance, maintains air circulation efficiency, and prevents overheating, even in environments with high dust concentrations, thereby enhancing the machine's operational efficiency.
Implementation Method 1
a curved part 50c, and a dust receiving part 51. The curved part 50c has an outside inner wall surface which makes the intake air flow direction in an upstream section from the intake port 50a to the curved part 50c different from the intake air flow direction in a downward section from the curved part 50c to the connection part 50b
Implementation Method 2
The dust receiving part 51 is disposed downstream of the outside inner wall surface with respect to the direction in which the sucked air flows on the outside inner wall surface of the curved part 50c so as to be capable of receiving dust that has come into contact with the outside inner wall surface
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Provided is a construction machine capable of reducing a decrease in work efficiency due to maintenance for capturing dust. The construction machine includes: an engine (31); a heat exchanger (35); a cooling fan (33) that sucks air into an engine chamber (15a) to pass the air through the heat exchanger (35); an intake chamber (15b) independent of the engine chamber (15a); an intake tube (50) connected to the intake chamber (15b); and a dust receiving part (51). The intake tube (50) has a curved part (50c), which has an outside inner wall surface allowing dust in the air to contact it. The dust receiving part (51) is located downstream of the outside inner wall surface to be capable of receiving dust.