Hermetic Compressor Support Structure for Vibration Restraint
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional reciprocating compressors experience increased vibration and noise due to inadequate transverse support of the compressor body, leading to potential collisions with the shell, which reduces reliability and increases manufacturing costs.
Innovation Solution
The implementation of a support system that includes a compression coil spring, a first stopper cap, a second stopper cap, and a stopper bar to mechanically constrain the compressor body, limiting excessive transverse amplitude and providing additional support without the need for separate components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a support spring configured as a compression coil spring is used to support the compressor body on the inner surface of the shell, then the compressor body is supported in the longitudinal direction, but the compressor body cannot be securely supported in the transverse direction, causing increased vibration and noise
Solution Approach 1:
The support function is segmented into multiple independent support springs arranged at different positions (e.g., four corners) of the compressor body. Each support spring handles both longitudinal and transverse support independently, providing comprehensive vibration reduction and secure support without requiring additional components.
2Reliability
If a support member is separately provided in addition to the support spring to suppress collision between the compressor body and the shell, then collision is suppressed, but the number of parts and assembly man-hours are increased, leading to increased manufacturing costs
Solution Approach 1:
The support spring is designed to perform multiple functions simultaneously: it provides elastic support in the longitudinal direction, suppresses transverse vibration through its positioning and arrangement, and prevents collision between the compressor body and shell. By merging these functions into a single component, the need for separate support members is eliminated, reducing part count and manufacturing cost.
3Reliability
If a support member is separately provided to suppress collision between the compressor body and the shell, then collision is suppressed, but the size of the compressor body is increased
Solution Approach 1:
The support spring integrates collision suppression functionality into its elastic support structure. The spring's natural compression and positioning characteristics provide collision prevention without requiring additional space-consuming components, maintaining a compact compressor body size while ensuring reliable collision suppression.
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 solution effectively reduces vibration noise, enhances support stability, and minimizes the risk of collisions, while also reducing manufacturing costs by utilizing existing components.
Implementation Method 1
a support spring configured as a compression coil spring is used to elastically support a lower end of a compressor body on a bottom surface of a shell
Data Source
AI summary
A hermetic compressor is provided. The hermetic compressor may include a compressor body spaced apart from an inner surface of a shell and including a motor unit and a compression unit; at least one support spring provided between the shell and the compressor body and that elastically supports the compressor body with respect to the shell; at least one stopper cap fixed to the inner surface of the shell or the compressor body facing the inner surface of the shell; and a stopper bar that extends from the compressor body or the inner surface of the shell and inserted into the at least one stopper cap with a predetermined distance therebetween. By mechanically restraining vibration of the compressor body and limiting amplitude of the compressor body, vibration noise of the compressor body may be reduced and the compressor body may be suppressed from being in contact with the shell to thereby prevent damage to the compressor body.