Hermetic Compressor Spring Connection Member for Noise Reduction
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Solution Overview
Problem
Hermetic compressors with standard four-spring suspension systems face challenges in achieving high strength and low operational speed without generating noise, as adjusting springs for optimal strength can cause mechanical damage and noise due to mechanical resonance at low rotational speeds.
Innovation Solution
A customizable connection member with adjustable arms and pins allows for varying numbers and positions of springs between the compressor body and lower casing, enabling independent alignment and loading to achieve desired strength and noise reduction, using a pin that can be welded or bolted for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number and position of springs are fixed in standard configuration, then the structure is simple and easy to manufacture, but the suspension system cannot be adjusted for variable speed compressors causing noise and mechanical damage at low operational speeds
Solution Approach 1:
The connection member is divided into multiple arms (first arm, second arm, third arm) that can be selectively connected to provide different spring configurations. This segmentation allows the same basic component to serve multiple functions for different operational speeds without requiring entirely different connection structures.
Solution Approach 2:
The connection member is designed as a universal component that can accommodate different numbers and positions of springs through its multiple arms and connection points. This multi-functional design allows a single connection member to adapt to various suspension requirements for both low-speed and high-speed operations.
2Strength
If springs are adjusted for optimal strength, then high strength is achieved, but mechanical damage and noise occur due to mechanical resonance at low rotational speeds
Solution Approach 1:
The suspension system becomes dynamic rather than fixed, allowing the number and position of springs to be changed based on operational speed requirements. This dynamic adaptability enables optimal strength at high speeds while reducing spring engagement at low speeds to avoid resonance-induced noise and damage.
Solution Approach 2:
The system allows changing parameters of the suspension configuration (number of springs, their positions, and which connection points are engaged) to match operational conditions. This parameter adjustment enables the suspension to provide high strength when needed while avoiding harmful resonance at low speeds.
3Object-affected harmful factors
If springs are configured for low operational speed, then noise is reduced, but the suspension system lacks sufficient strength for high speed operations
Solution Approach 1:
The suspension system transitions from a static configuration to a dynamic one where spring engagement can be adjusted based on operational speed. This allows the system to use fewer springs at low speeds for noise reduction while engaging more springs at high speeds for maximum strength.
4Ease of manufacture
If a fixed number of springs is used, then manufacturing is simplified, but the compressor cannot accommodate variable speed requirements
Solution Approach 1:
Rather than manufacturing different connection members for different speeds, the design segments the connection member into multiple arms with connection points that can be selectively engaged. This segmentation allows a single manufactured component to provide multiple configuration options.
Solution Approach 2:
The connection member is designed as a universal component that can serve multiple functions across different operational regimes. By incorporating multiple arms and connection points, a single manufactured part accommodates variable speed requirements without requiring separate components for different applications.
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 solution allows for a hermetic compressor with tailored spring configurations that maintain high strength and low operational noise, ensuring compatibility with variable speed requirements without mechanical damage or noise issues.
Implementation Method 1
the pin is mounted to the connection member by welding
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to a hermetic compressor (1) comprising a lower casing (2), a body (4) placed onto the lower casing (2), a rotor which is disposed in the lower casing (2) and a stator (5) which is positioned around the rotor concentrically with the rotor, and at least one bolt (6) which connects the body (2) and the stator (5) to each other.