Linear Compressor Radial Support to Reduce Vibration and Drooping
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Solution Overview
Problem
Existing linear compressors face challenges with vibration transmission and space efficiency due to the lack of effective radial support structures, leading to potential drooping of the compressor body and reduced refrigerant flow, as well as increased size and installation complexity.
Innovation Solution
A linear compressor design incorporating a first support device that radially supports the compressor body between the discharge cover and the shell, reducing the need for separate space and stabilizing the compressor body with a shorter support length, thereby minimizing vibration and noise transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If radial support devices are added to prevent drooping, then radial stability is improved, but the device complexity increases
Solution Approach 1:
The radial support devices are merged with the existing axial support structure to form an integrated support system. By combining both support functions into a unified design, the overall complexity is minimized while achieving comprehensive stability in both axial and radial directions.
Solution Approach 2:
The support devices are designed to serve multiple functions: providing both axial and radial support, reducing vibration, and maintaining compressor body alignment. This multi-functionality reduces the need for separate specialized components, thereby limiting the increase in device complexity.
2Force
If the compressor body droops to the bottom surface, then gravity is naturally supported, but the drive unit piston reciprocates away from the central axis reducing refrigerant flow efficiency
Solution Approach 1:
The radial support devices apply preliminary anti-gravity action in the radial direction, counteracting the drooping tendency before it can occur. By providing upward radial support, the system prevents the compressor body from drooping to the bottom surface, thereby maintaining central axis alignment and refrigerant flow efficiency.
Solution Approach 2:
Instead of allowing gravity to act unopposed and then correcting the position, the system inverts the approach by actively counteracting gravitational drooping through radial support devices. This inversion maintains the compressor body in its optimal central position, ensuring efficient refrigerant flow throughout operation.
3Device complexity
If the compressor body is not radially supported, then the structure remains simple, but vibration and noise are transmitted to the shell
Solution Approach 1:
The radial support devices act as intermediaries between the compressor body and the shell, absorbing and isolating vibration and noise. By introducing these intermediary support elements, the harmful vibrations are prevented from being directly transmitted to the shell, while the overall structural simplicity is maintained.
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
Provided is a linear compressor. The linear compressor includes a shell, a compressor body disposed in the shell, and a first support device coupled to a front portion of the compressor body in an axial direction to support the compressor body. The first support device may be disposed between an inner circumferential surface of the shell and the compressor body to support the compressor body in a radial direction.