HVAC&R Chassis Vibration Isolation for Compressor Noise Attenuation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
HVAC&R systems face challenges in effectively isolating compressor vibrations, leading to noise generation, as existing methods have limited success in isolating both the compressor and connected components like fluid lines.
Innovation Solution
The implementation of a self-contained refrigerant loop within a chassis that maintains a gap from the enclosure, supported by a vibration damping device positioned beneath the chassis structure, effectively isolating the enclosure from the refrigerant loop and reducing noise through vibrational isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the compressor and connected components are secured directly to the enclosure, then structural support and stability are improved, but vibration propagation and noise generation increase
Solution Approach 1:
The patent introduces a chassis as an intermediary structure between the enclosure and the compressor components. The chassis includes a first chassis structure that supports the compressor and a second chassis structure that supports the first chassis structure, creating a hierarchical support system that isolates vibrations from the enclosure.
Solution Approach 2:
The patent extracts the compressor and connected components into a separate, self-contained refrigerant loop mounted on the chassis. This separation allows the components to be isolated from the enclosure, preventing vibration propagation while maintaining structural support through the chassis framework.
2Object-generated harmful factors
If vibration isolation components are added to reduce noise, then noise attenuation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent incorporates vibration damping devices at strategic locations within the chassis structure, specifically between the first and second chassis structures. These damping elements are pre-installed to cushion vibrations before they can propagate through the system, providing noise attenuation as an inherent feature rather than an add-on component.
Solution Approach 2:
The patent merges the structural support function with the vibration isolation function by integrating vibration damping devices directly into the chassis structure. The chassis simultaneously provides mechanical support for the compressor and connected components while incorporating damping elements to reduce vibration, combining multiple functions into a single integrated structure.
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 significantly reduces noise levels by ensuring the enclosure is vibrationally isolated from the refrigerant loop, achieving substantial noise attenuation and improving the operational quietness of HVAC&R systems.
Implementation Method 1
at least one vibration damping device is positioned beneath the first chassis structure and between the first chassis structure and the second chassis structure
Data Source
AI summary
An apparatus for noise attenuation of an HVAC&R system including an enclosure having a first enclosure frame and a chassis insertable inside the enclosure and supported by the first enclosure frame upon insertion inside the enclosure. The chassis includes a first chassis structure securing a self-contained refrigerant loop. The loop maintains a gap from the enclosure upon insertion of the chassis inside the enclosure. A second chassis structure supports the first chassis structure. At least one vibration damping device is positioned beneath the first chassis structure and between the first chassis structure and the second chassis structure. The vibration damping device is supported by the second chassis structure, the second chassis structure is supported by the first enclosure frame. The enclosure is vibrationally isolated from the loop.