Compressor Unit Sound Shielding with Exposed Motor
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Solution Overview
Problem
Conventional compressor units face challenges in reducing noise while minimizing costs, as the noise generated by the electric motor is often smaller than that of the compressor, and existing sound shielding solutions are costly.
Innovation Solution
The compressor unit design incorporates the electric motor as part of the sound shielding structure, with a sound shielding member surrounding the compressor on specific sides and exposing the electric motor, reducing noise propagation while minimizing the amount and cost of the sound shielding member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a sound shielding member surrounds the compressor on all sides, then noise reduction is improved, but cost increases
Solution Approach 1:
The sound shielding member is configured to surround the compressor only on three sides (first side, second side, and third side) while leaving the fourth side open. This selective shielding approach applies sound protection locally to the most critical noise-emitting areas while avoiding unnecessary shielding on less noisy sides, thereby reducing material costs while maintaining effective noise reduction
Solution Approach 2:
The electric motor serves dual functions: it drives the compressor and simultaneously acts as a sound shielding element. The motor housing and structure are utilized to block noise propagation, eliminating the need for separate sound shielding components in certain areas and reducing overall manufacturing cost
2Object-affected harmful factors
If the sound shielding member covers all components including the motor, then noise reduction is improved, but the amount of sound shielding member increases
Solution Approach 1:
The electric motor structure itself is utilized to provide sound shielding functionality. The motor housing, mounting structure, and surrounding framework serve dual purposes as both functional components and acoustic barriers, eliminating the need for additional dedicated sound shielding materials in those regions
Solution Approach 2:
Sound shielding is applied selectively only where necessary - surrounding the compressor on three sides where noise generation is most significant - while leaving areas near the motor exposed or using the motor structure itself for shielding, thereby minimizing the total quantity of sound shielding material required
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 effectively suppresses compressor noise propagation while reducing the cost of sound shielding, using the electric motor to absorb noise and minimizing the need for extensive sound shielding, thus achieving both noise reduction and cost savings.
Implementation Method 1
a sound shielding member that reduces noise generated by the compressor
Data Source
AI summary
A compressor unit includes a compressor, an electric motor which is lined with the compressor along the horizontal direction and drives the compressor, and a sound shielding member which reduces noise generated by the compressor. The sound shielding member has a shape of surrounding the compressor on a first side, a second side and a third side of the compressor and exposing the electric motor, the first and second sides being in a depth direction perpendicular to a lined direction in which the compressor and the electric motor are lined, and the third side being opposite to another side of the compressor where the electric motor is located in the lined direction.