Compressor containing oil separator with multiple internal muffler spaces
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Solution Overview
Problem
Conventional muffling devices attached outside compressors are inefficient in attenuating refrigerant noise due to long distances from the compression-chamber outlet, leading to residual noise generation and increased processing costs for internal muffling solutions.
Innovation Solution
A muffler structure is integrated within the compressor, comprising a first and second muffler portion connected in series, allowing refrigerant gas to repeat expansion and contraction, thereby attenuating pressure pulsations closer to the source and reducing noise effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a muffling device is attached outside the compressor, then the structure is simple and easy to manufacture, but the noise attenuation efficiency is low due to long distance from the compression-chamber outlet
Solution Approach 1:
The patent integrates the muffler structure directly within the compressor body, merging two separate components (compressor and muffler) into a single unified structure. This eliminates the need for external attachment while reducing the distance between the compression-chamber outlet and the muffling chambers, thereby improving noise attenuation efficiency without significantly complicating the manufacturing process.
Solution Approach 2:
The patent utilizes the internal three-dimensional space of the compressor body to accommodate multiple muffling chambers (first and second muffling chambers) at different positions and orientations. By arranging chambers in series along the refrigerant flow path and using vertical and horizontal spacing, the design achieves effective noise attenuation within the compact compressor footprint.
2Object-affected harmful factors
If an internal muffler structure is integrated within the compressor, then the noise attenuation efficiency is improved by reducing distance from the source, but the device complexity increases
Solution Approach 1:
The muffler structure is divided into multiple independent muffling chambers (first muffling chamber and second muffling chamber) connected in series. Each chamber can be designed with simple internal geometry, and their combined effect achieves superior noise attenuation. This segmentation allows each chamber to handle specific frequency ranges while maintaining individual structural simplicity.
Solution Approach 2:
The integrated muffler structure serves multiple functions: it attenuates refrigerant noise, manages internal space efficiently, and can be configured to handle different refrigerant flow rates. The series connection of multiple chambers provides broadband noise attenuation across various operating conditions, enhancing the overall versatility of the compressor system.
3Object-affected harmful factors
If multiple muffling chambers are connected in series, then the pressure pulsation attenuation is enhanced through repeated expansion and contraction, but the space requirement within the compressor increases
Solution Approach 1:
The patent arranges the first and second muffling chambers in a nested or cascaded configuration within the compressor body. The chambers are positioned to utilize vertical and horizontal space efficiently, with each subsequent chamber building upon the space utilization of the previous one. This nesting approach maximizes the attenuation effect while minimizing the overall volume occupied.
Solution Approach 2:
The muffling chambers are arranged in three-dimensional space with varying orientations and positions. By utilizing height, width, and depth dimensions independently, the design accommodates multiple chambers in series without requiring excessive linear space. The series connection allows refrigerant to expand and contract through vertically and horizontally separated chambers, achieving effective pulsation attenuation within compact dimensions.
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 integrated muffler structure effectively reduces refrigerant noise by attenuating pressure pulsations upstream, improving noise reduction efficiency and design flexibility while minimizing space and processing costs.
Implementation Method 1
The muffler structure includes a first muffler portion and a second muffler portion connected in series such that a refrigerant gas repeats expansion and contraction
Data Source
AI summary
A compressor includes a compression mechanism, and a muffler structure disposed between a compression-chamber outlet of the compression mechanism and an inflow end of a discharge pipe. The muffler structure includes a first muffler portion and a second muffler portion connected in series such that a refrigerant gas repeats expansion and contraction.