Scroll Fluid Machine Silencer Design
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Solution Overview
Problem
The existing scroll fluid machines generate significant noise during gas discharge, and conventional silencers increase the machine's size and handling complexity.
Innovation Solution
An expansion-decompression tubular silencer is integrated into the radial discharge hole of the scroll fluid machine, featuring a smaller-diameter inlet hole connecting to a larger-diameter expansion hole with a female thread, allowing for adjustment via an introduction tube and adjusting nut to effectively reduce noise without altering the machine's outline or size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional silencer is mounted to the discharge hole or discharge joint, then noise is reduced, but the machine size increases and handling becomes difficult
Solution Approach 1:
The silencer is merged with the discharge joint by integrating it directly into the discharge hole structure. The silencer becomes an integral part of the discharge joint assembly, eliminating the need for separate mounting and reducing overall space requirements while maintaining noise reduction functionality.
Solution Approach 2:
The silencer is nested within the discharge joint structure, with the silencer body fitting inside or along the discharge hole. This nested arrangement allows the silencer to occupy space that would otherwise be empty or unused, reducing the overall machine footprint while preserving noise attenuation capabilities.
2Object-affected harmful factors
If a conventional silencer is mounted to reduce noise, then noise levels decrease, but the machine structure becomes more complex
Solution Approach 1:
The silencer structure is combined with the discharge joint, merging two functional elements into one integrated component. This reduces the total number of parts and simplifies the overall machine structure while achieving noise reduction without requiring additional mounting hardware or complex assembly procedures.
3Object-affected harmful factors
If the silencer protrudes axially or radially, then noise is reduced, but the outline and size of the machine increase
Solution Approach 1:
The silencer is nested within the existing machine outline, specifically integrated into the discharge joint structure. This allows the silencer to function without protruding axially or radially beyond the machine's existing envelope, preserving a compact and clean external shape while maintaining noise reduction effectiveness.
Solution Approach 2:
Instead of extending the silencer in the axial or radial directions (which would increase the machine outline), the design utilizes the axial dimension within the discharge joint structure. The silencer is positioned to extend axially within the existing discharge hole space, effectively using available dimensional space without increasing the overall machine footprint.
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 tubular silencer effectively reduces noise levels by expanding or decompressing the gas within the machine, maintaining the machine's size and ease of handling while accommodating variations in operation conditions and temperature.
Implementation Method 1
An expansion-decompression tubular silencer 1 fits in a radial discharge hole 44
Data Source
AI summary
A scroll fluid machine comprises a housing, a driving shaft, a fixed scroll fixed to the housing, and an orbiting scroll. A gas introduced from the outer circumference of the housing is compressed towards the center of the housing with revolution of the orbiting scroll by the driving shaft. The compressed gas is discharged through a discharge hole extending from the center outward in a radial direction. A silencer fits in the discharge hole to prevent noise caused by discharge of the gas.