Compressor Balancer Vibration Reduction
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Solution Overview
Problem
Existing compressors face challenges in reducing vibrations at the connection portion with a product, particularly due to torque, inertial, and centrifugal forces, which can lead to increased noise and operational inefficiencies.
Innovation Solution
The compressor is designed with a balancer that adjusts the position and angle of weights to synthesize the first vibration due to torque, the second vibration due to inertial force, and the third vibration due to centrifugal force, ensuring the composite vibration is reduced to the first vibration or less at the connection portion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional balancer configuration is used, then the structure is simple, but the composite vibration at the connection portion exceeds the first vibration level
Solution Approach 1:
The balancer includes an upper main weight member and a lower main weight member positioned at specific locations and orientations to generate counterbalancing forces that offset the harmful vibrations. The upper auxiliary weight member and lower auxiliary weight member are similarly positioned to provide additional counterbalancing, collectively reducing the composite vibration to the first vibration level or less.
Solution Approach 2:
The invention optimizes specific parameters of the balancer components, including the mass values, positions, and angular orientations of the upper and lower main weight members and auxiliary weight members. By carefully selecting these parameters, the system achieves effective vibration reduction while maintaining a relatively simple overall structure.
2Volume of moving object
If the compressor size is reduced, then the cost is reduced, but the vibration control becomes more difficult
Solution Approach 1:
The compact balancer design incorporates strategically positioned weight members that generate sufficient counterbalancing forces within a limited space. The upper and lower main weight members with auxiliary weight members are arranged to maximize vibration cancellation effectiveness while minimizing the overall volume occupied by the balancer assembly.
Solution Approach 2:
The invention employs optimized parameter selection for the balancer components, adjusting mass distributions and geometric configurations to achieve effective vibration control within a compact compressor design. This allows small compressors to maintain acceptable vibration levels without requiring excessive balancer mass or complex structures.
3Object-affected harmful factors
If the balancer weight members are increased in mass, then the vibration reduction is improved, but the centrifugal force increases
Solution Approach 1:
The balancer uses multiple weight members (upper main, lower main, upper auxiliary, and lower auxiliary) positioned at specific orientations to generate counterbalancing centrifugal forces that cancel each other out. This distribution of mass allows effective vibration reduction while keeping individual centrifugal forces manageable through proper angular positioning.
Solution Approach 2:
The invention optimizes the mass values and angular positions of the balancer weight members to achieve the desired vibration reduction with minimal centrifugal force generation. By carefully selecting parameters such as mass distribution and orientation angles, the system achieves effective balancing while minimizing harmful centrifugal effects.
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 vibrations at the connection portion, minimizing noise and allowing for a smaller compressor size, which in turn reduces costs while maintaining operational efficiency.
Implementation Method 1
a third vibration due to a centrifugal force acting on the rotary system
Implementation Method 2
a second vibration due to an inertial force acting on the piston by the eccentric rotational movement
Implementation Method 3
a first vibration due to torque according to a pressure difference between the low-pressure chamber and the high-pressure chamber
Data Source
AI summary
A compressor is mounted on a product. The compressor includes a drive shaft having an eccentric shaft portion, an electric motor with a rotor, a compression mechanism, a balancer forming a rotary system with the drive shaft and the rotor, a casing, a suction pipe, and a discharge pipe. The compression mechanism has a piston and cylinder to form a fluid chamber, and a blade dividing the fluid chamber into low and high pressure chambers. At a connection portion of the compressor with the product, a composite vibration is a first vibration or less, the composite vibration is a synthesis of the first vibration due to torque according to a pressure difference between the low and high pressure chambers, a second vibration due to an inertial force acting on the piston by the eccentric rotational movement, and a third vibration due to a centrifugal force acting on the rotary system.