Air Conditioner Compressor Pipe Damping to Reduce Resonance Vibration
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Solution Overview
Problem
Air conditioners experience significant vibration and noise due to the compressor operating at high frequencies, which causes resonance in the pipe, leading to potential pipe fractures from stress vibrations.
Innovation Solution
The air conditioner incorporates a first and second damping member on the compressor pipe, designed to change the natural resonant frequency of the pipe to a target frequency different from the compressor's operating frequency, thereby reducing vibration and noise. The second damping member includes a housing assembly with a damping material and a clamping groove to effectively dissipate vibration energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the compressor operates at high frequency to improve cooling/heating efficiency, then productivity is improved, but vibration and noise increase causing pipe resonance
Solution Approach 1:
A damping member is introduced as an intermediary component between the compressor and the pipe. This damping member absorbs and dissipates vibration energy, preventing the transmission of high-frequency vibrations from the compressor to the pipe, thereby eliminating pipe resonance while allowing the compressor to operate at high frequency for improved efficiency
2Productivity
If the natural resonant frequency of the pipe matches the compressor operating frequency, then the system operates efficiently, but pipe fracture risk increases due to resonance
Solution Approach 1:
The damping member changes the natural resonant frequency parameter of the pipe system. By introducing the damping member, the natural resonant frequency of the pipe is shifted away from the compressor operating frequency, preventing resonance conditions while maintaining efficient operation
3Reliability
If damping members are added to the pipe to reduce vibration, then reliability is improved, but device complexity increases
Solution Approach 1:
Instead of modifying the entire pipe system or compressor, the damping member is applied locally at the specific position where the pipe connects to the compressor. This localized approach provides effective vibration damping and prevents pipe fracture without significantly increasing overall device complexity
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 noise and enhances the operational reliability of the air conditioner by preventing pipe resonance and potential fractures, while also allowing the compressor to operate efficiently without excessive vibration.
Implementation Method 1
a damping material filled in the cavity
Implementation Method 2
The second damping member includes a housing assembly and a clamping groove. The housing assembly includes a housing body, a closed cavity is provided in the housing body, and a damping material is filled in the cavity
Implementation Method 3
The first damping member and the second damping member are configured to change a natural resonant frequency of the pipe to a target frequency, and the target frequency is different from an operating frequency of the compressor operating at a high frequency
Data Source
AI summary
An air conditioner includes an indoor unit and an outdoor unit. The outdoor unit includes a housing, a compressor, a first damping member, and a second damping member. The compressor is provided with a pipe. The first damping member and the second damping member each are disposed on the pipe. The second damping member is located at a preset position of the pipe. The first damping member and the second damping member are configured to change a natural resonant frequency of the pipe to a target frequency. The second damping member includes a housing assembly and a clamping groove. The clamping groove is disposed on a side of the cavity proximate to the pipe, so that a center of gravity of the second damping member deviates from a center of gravity of a portion of the pipe connected with the damping groove.