Aero-Acoustic Dust Removal Using Acoustic Lift and Bounded Vortex
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional vacuum cleaners cause surface wear and can become breeding grounds for bacteria due to high-impact contact with surfaces, making them unsuitable for applications requiring low dust mitigation or delicate electronics.
Innovation Solution
An aero-acoustic duster system utilizing acoustic radiation to break adhesive bonds between dust and surfaces, combined with a bounded vortex for particle removal, which reduces energy expenditure and enhances shear stress for efficient dust removal without surface contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional vacuum cleaners are used to remove dust particles, then dust removal effectiveness is improved, but surface wear increases and bacteria breeding risk increases
Solution Approach 1:
The patent replaces the mechanical contact system of conventional vacuum cleaners with an acoustic radiation force system. Acoustic standing waves generated by a speaker create radiation pressure that levitates and moves dust particles without mechanical contact, eliminating surface wear while maintaining dust removal effectiveness
Solution Approach 2:
The patent introduces acoustic radiation pressure as an intermediary force between the vacuum system and dust particles. The acoustic field acts as a mediator that transfers momentum to particles through radiation pressure, enabling particle manipulation without direct mechanical contact with the surface
2Productivity
If high air flow velocity is used to remove particles, then particle removal rate is improved, but energy consumption increases
Solution Approach 1:
The patent uses acoustic vibration at specific frequencies to create standing waves that trap and move particles. The resonant vibration of the acoustic field creates localized high-pressure regions that efficiently propel particles with minimal energy input compared to high-velocity air flow
Solution Approach 2:
The patent changes the operational parameters from high-velocity continuous air flow to acoustic frequency-modulated radiation pressure. By adjusting acoustic frequency and amplitude rather than air flow velocity, the system achieves particle removal with lower energy consumption
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 system achieves high particle removal rates with low energy consumption, preventing surface wear and effectively removing dust from various surfaces, including optical materials and delicate electronics, while maintaining surface integrity.
Implementation Method 1
Acoustic radiation is used to break the adhesive bonds between dust and the surface, forcing particles into a mode where they continuously bounce up and down on the surface
Implementation Method 2
By use of acoustic radiation force to levitate dust particles and break their adhesive bonds
Implementation Method 3
A bounded vortex is generated over the surface, with suction in the vortex center and jets for blowing air along the periphery. The jets are tilted in the tangential direction to induce vortex motion within the suction region
Implementation Method 4
A bounded vortex is generated over the surface, with suction in the vortex center
Data Source
AI summary
The aero-acoustic duster invention disclosed herein provides for high particle removal rate from surfaces with low energy expenditure relative to competing vacuum-based devices. The device removes particulate matter from a surface using a two-step process: 1. Acoustic radiation is used to break the adhesive bonds between dust and the surface, forcing particles into a mode where they continuously bounce up and down on the surface; and, 2. A bounded vortex is generated over the surface, with suction in the vortex center and jets for blowing air along the periphery. The jets are tilted in the tangential direction to induce vortex motion within the suction region. The vortex is said to be bounded because streamlines originating in the downward jets are entrained back into the central vortex.