Compressor Rotor Magnetic Offset Design to Reduce Vibration and Noise
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional compressors experience torque fluctuations during refrigerant compression and discharge, leading to vibration and noise issues, which conventional balance weights fail to adequately address without increasing costs.
Innovation Solution
The compressor design offsets the axis center of the rotating shaft from the radial direction center of the rotor, creating a first portion with stronger magnetic force than a second portion, generating non-uniform magnetic attractive forces that mimic the effect of balance weights, thereby reducing vibration and noise while maintaining a low cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a balance weight is used to suppress vibration and noise, then vibration and noise are reduced, but the cost increases due to the need for non-magnetic materials and additional components
Solution Approach 1:
The invention extracts the vibration suppression function from the traditional balance weight component and integrates it directly into the rotor structure through non-uniform magnetic force distribution, eliminating the need for separate balance weights made of non-magnetic materials
Solution Approach 2:
The invention replaces the mechanical balance weight system with a magnetic field-based system, where non-uniform magnetic attractive forces act on the rotor to suppress vibration and noise without requiring additional mechanical components
2Object-affected harmful factors
If a balance weight is used to suppress vibration and noise, then vibration and noise are reduced, but the device complexity increases due to additional components
Solution Approach 1:
The invention merges the vibration suppression function with the rotor structure itself by creating non-uniform magnetic force distribution within the rotor, combining multiple functions into a single integrated component
Solution Approach 2:
The invention extracts the vibration suppression function from separate balance weight components and integrates it directly into the rotor structure through non-uniform magnetic force distribution, eliminating the need for separate balance weights made of non-magnetic materials
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 suppresses vibration and noise in compressors while eliminating the need for expensive balance weights, maintaining a low-cost solution.
Implementation Method 1
a magnetic force of a first portion is stronger than a magnetic force of a second portion
Data Source
AI summary
A compressor is configured such that an axis center of a rotating shaft for transmitting rotation of a rotor to a compressing unit for compressing a refrigerant is offset from a rotor center of the rotor, and, when the rotor is divided into, with respect to the rotor center, a first portion located on a side in a direction from the axis center to the rotor center and a second portion located on a side in a direction from the rotor center to the axis center, a magnetic force of the first portion is stronger than a magnetic force of the second portion. This configuration allows the rotor to generate non-uniform magnetic attractive forces during the rotation of the rotor and thereby can suppress vibration generated due to rotation of an eccentric portion of the compressing unit and reduce noise.