Linear compressor
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Solution Overview
Problem
Linear compressors experience vibration and noise due to the direct fixation of plate springs to the compressor casing, leading to increased radial vibration and potential collisions with the casing, which are not effectively mitigated by existing designs.
Innovation Solution
The implementation of a support device that includes a plate spring with a spring connection part coupled to the discharge cover assembly, featuring a buffer part and a coupling member to absorb vibrations and prevent relative rotation, thereby reducing radial and axial vibrations and preventing collisions with the compressor casing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the plate spring is directly fixed to the compressor casing, then the structure is simple and easy to manufacture, but vibration of the compressor body is transmitted to the compressor casing generating noise
Solution Approach 1:
A vibration absorber is introduced as an intermediary component between the plate spring and the compressor casing. This vibration absorber captures and dissipates vibrations before they reach the compressor casing, thereby reducing noise while maintaining the simplicity of the overall structure.
2Device complexity
If no anti-rotation structure is provided, then the device complexity is reduced, but the rubber packing member rotates relatively with respect to the plate spring causing radial vibration
Solution Approach 1:
An anti-rotation protrusion and corresponding anti-rotation groove are designed as intermediary features between the rubber packing member and the plate spring. These features prevent relative rotation without adding complex anti-rotation mechanisms, thereby eliminating radial vibration while keeping the device simple.
3Device complexity
If the compressor body is not restrained, then the structure is simpler, but the compressor body collides with the compressor casing increasing vibration
Solution Approach 1:
A support leg with a support protrusion and a corresponding groove in the compressor casing forms an intermediary restraint mechanism. This simple geometric feature prevents the compressor body from colliding with the compressor casing while maintaining structural simplicity and reducing collision-induced vibration.
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 effectively minimizes vibration transmission to the compressor casing, reducing noise and preventing collisions, resulting in a more stable and efficient operation of the linear compressor.
Implementation Method 1
The plate spring may have high transverse rigidity (rigidity with respect to a direction that extends perpendicular to the axial direction of the compressor body) and low longitudinal rigidity (rigidity with respect to the axial direction of the compressor body)
Implementation Method 2
featuring a buffer part and a coupling member to absorb vibrations
Data Source
AI summary
A linear compressor is provided. The linear compressor may include a shell having a cylindrical shape and a horizontal central longitudinal axis, a fixing bracket provided on an inner circumferential surface of the shell, a compressor body accommodated in the shell in a state of being spaced apart from the inner circumferential surface of the shell to compress a refrigerant, a support connected to the fixing bracket to support the compressor body, and a coupling member that connects the support to the fixing bracket. The support may include a plate spring and a buffer coupled to an edge of the plate spring. The coupling member may pass through the buffer and be coupled to the fixing bracket.