Portable Air Compressor Noise Attenuation via Sound-Dampening Case
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Solution Overview
Problem
Conventional air compressors are typically loud, causing disturbance in their surroundings due to the noise they emit, which is a concern for their use in various applications.
Innovation Solution
A portable air compressor design featuring a case made from sound-dampening materials that encloses a compressor assembly, including an electric motor, pump, battery pack, and adjustable pressure regulator, which reduces noise emission to less than 68 decibels, along with a control panel for pressure adjustment and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional air compressors are used, then compression function is provided, but noise emission is high causing disturbance
Solution Approach 1:
A case made from sound-dampening material is introduced as an intermediary element between the compressor assembly and the surrounding environment. This case attenuates noise emitted by the compressor assembly to less than 68 decibels while allowing the compression function to operate normally through designated outlets.
Solution Approach 2:
The noise emitted by the compressor assembly, which is normally a harmful disturbance, is converted into a beneficial controlled output by using sound-dampening materials in the case design. The harmful noise is attenuated to acceptable levels, transforming the problematic acoustic emission into an acceptable operational characteristic.
2Object-affected harmful factors
If noise attenuation is increased to reduce disturbance, then noise emission is reduced, but device complexity increases
Solution Approach 1:
The case serves multiple functions simultaneously: it provides structural support for the compressor assembly, acts as a sound-dampening enclosure to attenuate noise, and integrates mounting structures for the battery pack and control panel. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity.
Solution Approach 2:
The case is constructed from composite or specially formulated sound-dampening materials that provide both structural integrity and acoustic attenuation properties. This use of advanced materials achieves effective noise reduction while maintaining a relatively simple single-piece or minimally segmented case 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
The solution effectively attenuates noise to a level that is significantly quieter than standard air compressors, making it suitable for use in environments where noise reduction is necessary without compromising performance.
Implementation Method 1
The case attenuates noise emitted by the compressor assembly to less than 68 decibels
Data Source
AI summary
An air compressor includes a compressor assembly with a motor and a pump driven by the motor, a battery receptacle, and a battery pack electrically connected to the motor via the battery receptacle for providing electrical power to the motor. The battery receptacle and the battery pack are positioned adjacent the compressor assembly. The compressor also includes a storage tank that receives compressed air from the pump, a case enshrouding the compressor assembly, an outlet port in fluid communication with the storage tank, and an adjustable pressure regulator at least partially positioned within the case. The outlet port configured to discharge compressed air from the storage tank at a regulated pressure determined by the pressure regulator. The compressor further includes an adjustment knob to adjust the regulated pressure of compressed air provided by the outlet port. The case attenuates noise emitted by the compressor assembly to less than 68 decibels.