Air Compressor Intake Labyrinth for Dust and Noise Control
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Solution Overview
Problem
Existing air compressors face challenges in effectively protecting the intake path of the crankcase from dust, which affects maintainability and durability, and also fail to adequately reduce noise leakage.
Innovation Solution
The air compressor design incorporates a filter and dust cover system where the intake path is bent through a labyrinth structure, using annular walls and recesses between the filter and dust covers to direct outside air, reducing dust entry and noise leakage by creating multiple bends in the airflow path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter is installed on the crankcase cover to reduce noise and dust, then noise leakage is reduced and dust protection is improved, but the intake path becomes complex and dustproof performance is insufficient
Solution Approach 1:
The patent implements a nested structure where the filter cover is positioned inside the dust cover, creating multiple layers of protection. The filter cover with its filter element is nested within the dust cover assembly, forming a concentric arrangement that enhances dustproof performance while maintaining a compact structure.
Solution Approach 2:
The patent introduces a radial dimension to the intake path by creating a radial intake passage that extends from the outer circumferential surface of the dust cover toward the center. This radial configuration adds a dimensional element that increases the path length and complexity, improving dustproof performance without significantly increasing the axial footprint.
2Object-generated harmful factors
If the intake path is bent to reduce noise leakage, then noise is reduced, but dustproof performance may be compromised
Solution Approach 1:
The filter cover is nested within the dust cover assembly, creating a concentric arrangement where the filter element is positioned radially inward from the dust cover's outer surface. This nested structure allows the intake path to bend radially while maintaining multiple protective layers, simultaneously reducing noise leakage and preserving dustproof performance.
Solution Approach 2:
The intake path utilizes the radial dimension by extending from the outer circumferential surface toward the center of the dust cover. This radial configuration allows the path to bend in a direction perpendicular to the axial direction, effectively reducing noise leakage while maintaining dustproof performance through the multi-layered nested structure.
3Reliability
If multiple components (filter, filter cover, dust cover) are used to protect the intake path, then dustproof performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the filter cover and dust cover into a integrated assembly where the filter cover is positioned inside the dust cover. This merging approach allows multiple protective functions to be combined in a compact nested structure, improving dustproof performance without proportionally increasing overall complexity.
Solution Approach 2:
The dust cover serves multiple functions: it protects the filter cover assembly, provides structural support, and creates the radial intake passage. The filter cover simultaneously protects the filter element and contributes to the nested protective structure. This multi-functionality reduces the need for separate dedicated components, managing complexity while maintaining high dustproof performance.
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 enhances dustproof performance and maintainability while effectively reducing noise leakage, ensuring the filter remains less clogged and the compressor operates more reliably.
Implementation Method 1
a filter located in the crankcase and covering the inner inlet from outside
Implementation Method 2
the intake path is bent through a labyrinth structure, using annular walls and recesses between the filter and dust covers to direct outside air
Data Source
AI summary
An air compressor improves the dustproof performance of an intake path to a crankcase. The air compressor includes a compression assembly that reciprocates a piston in a cylinder to produce compressed air, a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn, a filter located in the crankcase and covering the inner inlet from outside, a filter cover having an outer inlet and covering the filter from outside, and a dust cover covering the filter cover from outside, covering the outer inlet, and including an outer circumferential portion. The outer circumference portion and the filter cover have a space to draw outside air between the outer circumference portion and the filter cover.