Air Scoop-Cyclone Filter Baffle Plate Dust Separation
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Solution Overview
Problem
The existing air scoop-cyclone filter assembly fails to effectively remove larger dust particles from the air stream, leading to increased residual dust in the charging air, which damages the impeller of the exhaust gas turbocharger compressor, especially under congested and dusty conditions.
Innovation Solution
The air scoop-cyclone filter assembly incorporates a baffle plate with two pass-through areas of different hole densities and a curved supplemental guide plate to separate and collect larger dust particles, preventing them from re-entering the air stream and enhancing sedimentation, while reducing vortex formation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the air scoop deflects the untreated air to guide it through the cyclone filter, then the air flow is directed through the filter system, but a vortex forms at the geodesically lowest point which picks up larger dust particles and feeds them back into the air stream
Solution Approach 1:
The pass-through area of the perforated plate is divided into two distinct zones: a first pass-through area with a large number of holes for general air flow, and a second pass-through area with a smaller number of holes positioned at the geodesically lowest point. This segmentation allows different regions to handle different functions - the first area maintains air flow while the second area specifically addresses dust particle separation by positioning holes away from the vortex zone.
Solution Approach 2:
A baffle plate is introduced as an intermediary element between the air scoop and the perforated plate. The baffle plate has a first surface that forms a nonturbulent collecting space with the air scoop's outer surface, and a second surface that forms a second collecting space with the cyclone filter's inner surface. This intermediary structure prevents direct vortex formation and provides controlled environments for dust particle collection and discharge.
2Productivity
If the perforated plate has a large number of holes for efficient air passage, then air flow is maximized, but larger dust particles can still pass through and contaminate the charging air
Solution Approach 1:
The perforated plate exhibits local quality variations in its hole distribution. The first pass-through area has a high density of holes optimized for air flow, while the second pass-through area at the geodesically lowest point has a lower density of holes optimized for dust particle separation. This local differentiation allows the plate to simultaneously maximize air flow while preventing larger dust particles from contaminating the charging air.
3Volume of moving object
If the air scoop-cyclone filter assembly is designed to be compact, then space is saved, but the complexity of the internal structure increases
Solution Approach 1:
The baffle plate serves multiple functions simultaneously: it divides the untreated air stream into separate flows, forms nonturbulent collecting spaces for dust particle accumulation, and works with the perforated plate to create differentiated pass-through areas. By merging these functions into a single component, the overall assembly complexity is reduced while maintaining effective dust particle removal capabilities.
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 significantly improves the purity of charging air, ensuring a longer service life for the turbocharger compressor by effectively removing larger dust particles, even under adverse environmental conditions.
Implementation Method 1
The baffle plate separates the first pass-through area from the second pass-through area. Its first function is to divide the untreated air stream into a first untreated air stream, which passes through the first area, and a second untreated air stream, which passes through the second area.
Implementation Method 2
the baffle plate cooperates with the outside wall of the air scoop to form a nonturbulent collecting space for the larger dust particles
Implementation Method 3
the baffle plate cooperates with the outside wall of the air scoop to form a nonturbulent collecting space for the larger dust particles
Implementation Method 4
Because of the way in which the untreated air is deflected in the air scoop, however, an air vortex develops precisely in this area
Implementation Method 5
a curved supplemental guide plate is also provided in the air scoop, which improves the sedimentation of the larger dust particles from the untreated air
Implementation Method 6
a cyclone filter for cleaning the untreated air, which is installed downstream from the air scoop and is connected to the air scoop in an air-tight manner
Data Source
AI summary
An air scoop-cyclone filter assembly having an air scoop for guiding untreated air, which including an inlet opening, a deflection area for deflecting untreated air and an outlet opening, and having a cyclone filter for cleaning untreated air, which is connected downstream of the air scoop in the flow direction and is connected in an airtight manner to the air scoop A perforated plate is arranged in the cyclone filter as a filter inlet opening. The perforated plate has a first passage area having a high number of holes, a second passage area having a low number of holes at the geodetically deepest point, and a baffle plate. The baffle plate distributes the untreated air flow through the first and second passage area and, with the outer wall of the air scoop, forms a collecting chamber that stabilizes the flow.