Dual Discharge Muffler Layout for Reciprocating Compressor Noise
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Solution Overview
Problem
Existing reciprocating compressors face issues with ineffective noise reduction across various frequencies, hose melting due to welding heat, and connection instability between the discharge hose and pipe, primarily due to the use of a single discharge muffler and flexible discharge hoses.
Innovation Solution
The compressor incorporates two separate discharge mufflers, with one muffler connected by a flexible hose and the other by a metal hose to the discharge pipe, ensuring effective noise reduction and vibration blocking, while maintaining a secure connection without the need for sealing members like O-rings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single discharge muffler is used, then the device complexity is reduced, but the noise reduction effectiveness across various frequencies deteriorates
Solution Approach 1:
The discharge muffler is divided into multiple separate mufflers (first discharge muffler and second discharge muffler) connected in series through a discharge hose. Each muffler handles different frequency ranges of noise, achieving comprehensive noise reduction across various frequencies while maintaining manageable device complexity through modular segmentation.
2Object-affected harmful factors
If a flexible discharge hose is used, then the vibration transmission is reduced, but the hose melts due to heat transferred during welding process
Solution Approach 1:
The discharge hose system is segmented into two distinct sections: a first discharge hose made of flexible material connecting the first discharge muffler to the second discharge muffler (isolated from welding heat), and a second discharge hose made of heat-resistant metal material connecting the second discharge muffler to the discharge pipe (exposed to welding heat). This segmentation allows each section to have optimized material properties for its specific thermal environment.
Solution Approach 2:
Different material qualities are applied to different sections of the discharge hose system based on local thermal conditions. The first discharge hose uses flexible material with high vibration damping properties in a low-heat zone, while the second discharge hose uses heat-resistant metal material in a high-heat zone near the welding area, achieving local optimization of both vibration reduction and heat resistance.
3Reliability
If an O-ring is installed at the end of the discharge hose to connect to the discharge pipe, then the sealing is improved, but the O-ring is torn during insertion or falls out during use
Solution Approach 1:
The vulnerable O-ring sealing element is extracted and removed from the discharge hose connection system. Instead, a direct metal-to-metal connection is implemented between the second discharge hose and the discharge pipe, eliminating the O-ring and its associated problems of tearing during insertion or falling out during operation, while maintaining connection reliability through the inherent strength of the metal connection.
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 configuration effectively reduces noise across desired frequencies, blocks vibrations, and securely maintains the connection between the discharge hose and pipe, preventing damage during welding processes.
Implementation Method 1
a discharge unit including a plurality of discharge mufflers that are separately arranged
Implementation Method 2
discharge hoses connecting the separate discharge mufflers are formed of a flexible material
Data Source
AI summary
A reciprocating compressor according to an embodiment of the present disclosure includes a discharge unit including a first discharge muffler including a first muffler body and a first muffler cover coupled to the first muffler body; a second discharge muffler including a second muffler body and a second muffler cover coupled to the second muffler body; a first discharge hose connecting the first discharge muffler and the second discharge muffler; and a second discharge hose connecting the second discharge muffler to a discharge pipe coupled to a hermetic container. The first discharge hose connecting the first discharge muffler and the second discharge muffler is formed of a flexible material, and the second discharge hose connecting the second discharge muffler and the discharge pipe is formed of a metal material. The reciprocating compressor can effectively block vibration generated in a compressor body, can securely maintain the connection between the discharge hose and the discharge pipe, and can effectively reduce noise of a desired frequency by controlling volume of the first and second discharge mufflers.