Hermetic Compressor Connector Venting for Suction Noise Reduction
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Solution Overview
Problem
Conventional hermetic compressors experience high refrigerant noise due to high refrigerant suction velocity caused by low suction pressure, which is not effectively addressed by existing noise reduction methods.
Innovation Solution
A hermetic compressor design that includes a connector with strategically placed holes in a rubber material, allowing pressure equalization between the suction pipe and suction muffler, reducing the refrigerant suction pressure and velocity, and incorporating a trumpet-shaped corrugated portion for improved noise reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the connector is designed with high adhesion to maintain low suction pressure, then the elastic connector is closely attached to the inside of the hermetic container, but the refrigerant suction velocity becomes high causing high noise
Solution Approach 1:
The connector is divided into multiple functional sections: a corrugated portion for adhesion to the hermetic container, a hole portion with strategically placed holes for pressure equalization, and a plane portion for connection to the suction muffler. This segmentation allows each section to perform its specific function independently, resolving the contradiction between maintaining low suction pressure and reducing noise.
Solution Approach 2:
The hole portion acts as an intermediary element between the suction pipe and suction muffler, introducing communication holes that allow pressure equalization. This intermediary structure enables the connector to maintain both the adhesion needed for low suction pressure and the pressure balancing needed to reduce refrigerant velocity and noise.
2Strength
If the connector is made rigid to maintain structural integrity, then the connection is stable, but the noise reduction effectiveness is compromised
Solution Approach 1:
The connector utilizes a flexible corrugated portion made of elastic material that can adhere to the hermetic container while maintaining structural integrity. The flexibility of this portion allows it to conform to the container surface and maintain stable connection, while the integrated hole portion provides noise reduction functionality without compromising strength.
3Ease of manufacture
If the connector is designed with simple structure, then the manufacturing is easier, but the noise reduction performance is insufficient
Solution Approach 1:
The connector is designed as a multi-functional component that simultaneously performs adhesion to the hermetic container, pressure equalization through communication holes, and noise reduction. By integrating these multiple functions into a single connector structure, the design achieves effective noise reduction without significantly complicating the manufacturing process.
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 design effectively reduces refrigerant suction noise in specific frequency bands by equalizing suction pressure with the hermetic container's pressure, lowering refrigerant velocity and improving noise performance.
Implementation Method 1
enabling a suction pipe of a hermetic container and a suction muffler to communicate with each other
Implementation Method 2
regulating a suction pressure in a connector enabling a suction pipe of a hermetic container and a suction muffler to communicate with each other
Implementation Method 3
a suction muffler fixed to the compression mechanism unit and reducing the flow noise when the refrigerant passes
Implementation Method 4
A hermetic compressor design that includes a connector with strategically placed holes in a rubber material
Data Source
AI summary
The present invention discloses a hermetic compressor which can reduce the noise by regulating a suction pressure in a connector enabling a suction pipe of a hermetic container and a suction muffler to communicate with each other. The hermetic compressor includes: a hermetic container including a suction pipe through which refrigerant is sucked and accommodating a compression mechanism unit for compressing the refrigerant; a suction muffler fixed to the compression mechanism unit and reducing the flow noise when the refrigerant passes; and a connector enabling the suction pipe and the suction muffler to communicate with each other and including a hole on a refrigerant passage to communicate with an inner space of the hermetic container. An inner pressure of the connector is equalized with an inner pressure of the hermetic container, which raises a refrigerant suction pressure. As a difference between the refrigerant suction pressure and the pressure of the compression space is reduced, the noise generated during the refrigerant suction can be reduced.