Closed Compressor Curved Support Design to Reduce Low-Speed Vibration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing closed compressors experience increased vibration during slow rotation operations, leading to noise and efficiency issues, particularly due to resonance phenomena between the elastic support members and the compressor body's mass and shape.
Innovation Solution
A closed compressor design featuring a compressor body with a curved support surface that contacts the inner bottom of a closed vessel, where the curved surface's center of curvature is positioned above the center of gravity, reducing vibration transmission and resonance by stabilizing the compressor's posture and oscillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a spring is used as an elastic support member to reduce vibration propagation, then vibration propagation is reduced, but resonance phenomenon occurs at very low rotation speeds
Solution Approach 1:
The patent removes the spring-based elastic support member from the system and replaces it with a direct support structure between the compressor body and closed vessel. This extraction eliminates the resonance phenomenon that occurs with springs at low rotation speeds while still providing vibration isolation through the rigid support structure's damping characteristics.
Solution Approach 2:
The patent employs a simple, rigid support structure instead of a complex spring mechanism. This simplified support structure provides sufficient vibration isolation without the resonance issues of elastic members, effectively replacing the 'expensive' spring system with a simpler, more reliable alternative for low-speed operation.
2Use of energy by moving object
If the compressor operates at slow rotation to improve energy saving, then power consumption is reduced, but vibration significantly increases
Solution Approach 1:
The patent introduces a specifically designed support structure as an intermediary between the compressor body and the closed vessel. This support structure acts as a mediator that allows the compressor to operate at low speeds for energy saving while filtering and reducing the vibration that naturally increases at these speeds, thus resolving the contradiction between energy efficiency and vibration control.
3Object-affected harmful factors
If a flat surface portion is provided in the elastic support member to utilize lubricant viscosity, then vibration is attenuated, but resonance still occurs at very low rotations
Solution Approach 1:
The patent removes the elastic support member with flat surface portion from the system. While this configuration provided some vibration attenuation through lubricant viscosity, it still suffered from resonance at very low rotations. The removal of this component eliminates the resonance issue while the patent provides alternative vibration control through the rigid support structure design.
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 significantly reduces vibration and noise during slow rotations, allowing for efficient operation at lower power consumption and improved refrigeration device performance.
Implementation Method 1
The compressor body has a support forming a curved surface, and a contact portion is formed between the curved surface and an inner bottom of the closed vessel
Data Source
AI summary
A closed compressor includes: a compressor body; and a closed vessel in which the compressor body is accommodated and oil is stored. The compressor body has an electric element and a compression element that is driven by the electric element. The compression element has a cylinder block that forms a cylinder, a piston that performs a reciprocating motion in the cylinder, and a crankshaft that actuates the piston. The cylinder block configures a bearing that pivotally supports the crankshaft. The cylinder forms a compression chamber. The compressor body has a support that forms a curved surface. A contact portion, at which the curved surface comes into contact with a receiving surface in the closed vessel, is formed.