Acoustic Attenuator for Hermetic Compressors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hermetic compressor acoustic attenuator devices in refrigeration systems are complex to manufacture and mount, prone to gas leakage, and have limited noise attenuation due to intricate geometrical configurations and high seal requirements, leading to increased costs and inefficiencies.
Innovation Solution
A simplified acoustic attenuator device design featuring a hollow body with a cover and intermediate body forming two acoustic chambers through a connecting channel, allowing gas passage without complex sealing, made from low thermal conductivity materials and assembled using welds, glues, or mechanical locks, reducing the number of parts and leakage risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If multiple chambers and ducts are assembled using interference of materials to achieve acoustic attenuation, then noise reduction is improved, but manufacturing complexity and seal precision requirements increase significantly
Solution Approach 1:
The patent combines multiple chambers and ducts into a single integrated housing structure. Instead of assembling separate components through interference fits, the housing is formed as one piece that contains all necessary chambers and ducts internally, eliminating the need for complex multi-part assemblies while maintaining acoustic attenuation functionality
Solution Approach 2:
The housing structure serves multiple functions simultaneously: it provides the structural enclosure, contains the acoustic chambers and ducts, and eliminates the need for separate sealing components. This multi-functional design reduces both manufacturing complexity and assembly steps while achieving the required noise reduction
2Object-affected harmful factors
If multiple parts are connected to extend gas circulation pathways, then acoustic attenuation is improved, but gas leakage risk increases
Solution Approach 1:
By integrating all chambers and ducts into a single housing structure, the patent eliminates multiple connection points where gas leakage could occur. The unified structure ensures gas-tight containment without relying on multiple seals or interference fits between separate parts, thereby improving reliability while maintaining acoustic attenuation performance
3Object-affected harmful factors
If precise interference fitting is used to seal chambers and ducts, then acoustic attenuation is improved, but manufacturing cost and tool complexity increase
Solution Approach 1:
The patent resolves the manufacturing cost issue by forming all chambers and ducts as integral parts of a single housing structure. This eliminates the need for expensive precision interference fitting tools and complex assembly procedures, while the unified structure inherently provides the acoustic attenuation performance that would otherwise require precisely sealed multiple components
4Object-affected harmful factors
If complex geometrical configurations are used in chambers and ducts, then noise reduction is improved, but manufacturing complexity increases
Solution Approach 1:
The patent addresses the geometrical complexity issue by forming all complex chamber and duct configurations within a single housing structure. This allows the complex acoustic pathways to be integrated without requiring multiple separate components with intricate geometries, thereby reducing manufacturing complexity while maintaining the noise reduction performance achieved through the optimized internal configurations
Data Source
Figure 1~2
Figure 3~4
Figure 5A~5D
AI summary
The present invention refers to an acoustic attenuator device for compressors, preferably those used in refrigeration systems, in general. More specifically, the present invention refers to an acoustic attenuator device comprising technical, structural, and functional features capable of simplifying the method of fabricating these parts and increasing acoustic attenuation levels of hermetic compressors, in general. In this sense, the attenuator device of the present invention comprises a hollow body (20) closed by a cover (21) to form a structure having at least one inlet hole (22) and an outlet hole (23), wherein there is provided between said hollow body (20) and said cover (21) at least one intermediate body (24) dividing said structure into at least two acoustic chambers (A, A'), and is formed by a platform (25) provided with a connecting channel (26), which is in fluid communication between said acoustic chambers (A, A') and further surrounds an outlet channel (27), which is interconnected with said outlet hollow (23) disposed on said cover (21).