Hermetic Compressor Discharge Muffler Integration
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Solution Overview
Problem
Existing hermetic compressor designs face challenges in miniaturization and noise reduction due to the limitations of traditional discharge muffler configurations, which restrict the miniaturization of components and increase material usage.
Innovation Solution
The compressor design incorporates a discharge muffler chamber positioned below the main frame as a mounting leg, allowing for reduced mounting legs and increased muffler volume, with a connecting bolt system that integrates the discharge muffler cover and stator, eliminating the need for additional fixing bolts and enhancing compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional discharge muffler configurations are used, then noise attenuation is achieved, but the compressor size increases and miniaturization is restricted
Solution Approach 1:
The discharge muffler cover is integrated with the main frame to form a unified structure, merging two previously separate components into one. This integration eliminates the need for separate mounting legs, reduces the number of parts, and maximizes the use of available space within the compressor housing, thereby achieving noise attenuation without increasing overall compressor size
Solution Approach 2:
The discharge muffler cover serves multiple functions: it acts as both a muffler component for noise attenuation and as a structural support element (mounting leg) for the compressor. This multi-functionality reduces the total number of components needed, allowing for a more compact design that maintains noise control capabilities while reducing overall dimensions
2Strength
If traditional mounting leg configurations are used, then structural support is provided, but the number of mounting legs increases material usage and reduces compactness
Solution Approach 1:
The mounting leg function is merged into the discharge muffler cover structure. The cover is designed with integrated mounting legs that are formed as part of the same piece, eliminating the need for separate mounting leg components. This reduces material usage while maintaining the structural support function, as the integrated design allows for optimized material distribution
Solution Approach 2:
The discharge muffler cover is designed to perform multiple functions simultaneously: it provides noise attenuation as a muffler component, structural support through integrated mounting legs, and component attachment (connecting the compressing unit to the electromotive unit). This multi-functionality reduces the total material required compared to having separate components for each function
3Reliability
If separate fixing bolts are used for the discharge muffler cover, then secure attachment is achieved, but device complexity and material requirements increase
Solution Approach 1:
The connecting bolt function is merged with the discharge muffler cover assembly. The cover is designed to be directly connected to the stator using the existing connecting bolt that secures the compressing unit to the electromotive unit, eliminating the need for separate fixing bolts. This reduces device complexity while maintaining secure attachment through the integrated design
Data Source
Figure 1
Figure 2A~2B
Figure 2C
AI summary
A hermetic compressor is disclosed. The hermetic compressor comprises compressing unit and an electromotive unit. The compressing unit comprises: a cylinder block having a compression chamber; cylinder head having a discharge chamber which is controllably couplable to the compression chamber; a discharge muffler body portion and a discharge muffler cover which form a discharge muffler chamber coupled to the discharge chamber; a piston configured to compress a refrigerant in the compression chamber; and a main frame having a least one mounting leg. The electromotive unit comprises: a stator; a rotor; and a crankshaft coupled to the rotor. The electromotive unit is configured such that rotary motion of the rotor relative to the stator causes rotation of the crankshaft which drives the piston to compress the refrigerant in the compression chamber. The compressing unit is coupled to the stator of the electromotive unit and supported by the at least one mounting leg of the main frame and the discharge muffler cover.