Connection component of a refrigerant compressor
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Solution Overview
Problem
Existing connection components for refrigerant compressors, typically using rubber for vibrational decoupling, face challenges with high dynamic stiffness and incompressibility, leading to inadequate vibrational decoupling, especially at low frequencies, due to cost pressures in consumer products like refrigerators.
Innovation Solution
A connection component with a nonlinear spring constant is achieved through a design featuring an inner element with higher stiffness than the outer element, where the outer element's functional segment is supported at both the housing and device, and deforms into a free space, allowing for buckling and stabilizing the system with an abutment member, enabling reduced static deflection and characteristic frequency for improved vibrational decoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If rubber is used as the connection component material, then cost is reduced, but vibrational decoupling performance deteriorates due to high dynamic stiffness and incompressibility
Solution Approach 1:
The connection component is divided into an inner element and an outer element with distinct functions. The inner element provides structural support and compression, while the outer element with its functional segment provides vibrational decoupling through controlled deformation into the free space, achieving both cost-effectiveness and performance
Solution Approach 2:
The connection component transitions from a static rigid structure to a dynamic system where the outer element's functional segment can deform in real-time. The nonlinear spring constant allows the component to adapt its stiffness characteristics based on the amplitude and frequency of vibrations, improving decoupling performance across different operating conditions
2Length of moving object
If a linear spring constant is used, then static deflection can be reduced, but characteristic frequency cannot be lowered sufficiently for effective low-frequency vibrational decoupling
Solution Approach 1:
The spring constant changes nonlinearly with compression distance. At small compressions (normal operation), the spring constant is high, maintaining low static deflection. At larger compressions (vibration amplitudes), the spring constant decreases, allowing effective energy absorption and decoupling at low frequencies including the critical 50-160 Hz range
3Reliability
If the outer element is made more flexible to improve vibrational decoupling, then transverse stiffness increases, but assembly simplicity and space requirements are compromised
Solution Approach 1:
The free space is positioned in the axial dimension rather than requiring lateral clearance. This allows the outer element to deform axially into the free space, achieving flexible vibrational decoupling without increasing transverse dimensions or complicating the assembly process
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 design effectively reduces the characteristic frequency, enhancing vibrational decoupling at both low and high frequencies, while maintaining low static deflection and simplifying assembly, thus improving the vibrational isolation of refrigerant compressors.
Implementation Method 1
the outer element has a functional segment that is designed so that in a loaded state of the connection component it is supported both at the housing and also at the device... in the loaded state the functional segments deformed so that it at least partially projects into the free space
Data Source
AI summary
The invention relates to a connection component of a refrigerant compressor for joining a housing of the refrigerant compressor to a device that is in operative connection with the refrigerant compressor, the connection component comprising an inner element and an outer element surrounding the inner element, where the inner element has a higher stiffness than the outer element and the outer element has a functional segment that is designed so that in a loaded state of the connection component it is supported both at the housing and also at the device.