Electrostatically Charged Liquid Particle Diffusion
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Solution Overview
Problem
Existing methods for spraying liquid compositions to treat target spaces lack stability and efficiency in diffusing liquid particles into larger areas, which affects the effective distribution of active constituents.
Innovation Solution
A method involving the use of a composition with a solvent and an electrolyte having a specific pK range, sprayed as electrostatically charged liquid particles with a controlled particle diameter and charge number, to ensure stable diffusion and treatment of target spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If conventional liquid composition spraying methods are used, then the active constituent can be provided in the atmosphere, but the liquid particles cannot be diffused stably into larger spaces
Solution Approach 1:
The patent applies parameter changes by precisely controlling the particle diameter (1-10 μm) and charge number (+40 to +40,000) of liquid particles. By adjusting these physical parameters within specific ranges, the invention achieves both stable spraying and wide diffusion area. The electrolyte concentration (0.001-1% by mass) is also controlled to optimize particle charge and stability, resolving the contradiction between diffusion area and spraying stability.
Solution Approach 2:
The invention replaces conventional mechanical spraying methods with electrostatic charging of liquid particles. By imparting positive charges to the liquid particles through frictional electrification or corona discharge during spraying, the particles gain electrostatic repulsion that enables stable diffusion into larger spaces without aggregation, thus achieving both stability and wide coverage.
2Area of stationary object
If liquid particles are sprayed to increase diffusion area, then larger space coverage is achieved, but spraying stability deteriorates
Solution Approach 1:
The patent resolves this contradiction by establishing specific parameter ranges: particle diameter of 1-10 μm and charge number of +40 to +40,000. These controlled parameters ensure that liquid particles remain sufficiently charged for stable electrostatic repulsion and diffusion, while maintaining appropriate size for spray stability. The electrolyte concentration is controlled at 0.001-1% by mass to optimize charge distribution without compromising spray stability.
Solution Approach 2:
The invention substitutes mechanical spray stability mechanisms with electrostatic control. Instead of relying solely on mechanical nozzle design and pressure control, the system uses electrostatic charging to maintain particle separation and stable diffusion patterns, allowing wide area coverage while preserving spraying stability through electrical rather than purely mechanical means.
3Quantity of substance
If conventional spraying methods are used, then liquid composition can be applied, but the active constituent distribution is uneven
Solution Approach 1:
The patent replaces mechanical mixing and distribution methods with electrostatic charging. By imparting uniform positive charges to each liquid particle, the electrostatic field ensures that particles repel each other uniformly and distribute evenly throughout the target space. This electrostatic mechanism provides superior uniformity of active constituent distribution compared to conventional mechanical spraying, achieving both adequate quantity coverage and high distribution precision.
Solution Approach 2:
The invention controls the charge number parameter within the range of +40 to +40,000 to ensure sufficient electrostatic repulsion between particles. This parameter control, combined with particle diameter control (1-10 μm), guarantees uniform spacing and even distribution of active constituents throughout the sprayed area, resolving the contradiction between quantity of substance and distribution uniformity.
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 approach allows for effective and stable diffusion of liquid particles into larger spaces, enabling efficient treatment of target spaces by ensuring the active constituents are evenly distributed, effectively removing contaminants like dust, pollen, and smoke particles.
Implementation Method 1
liquid droplets (liquid composition) to be sprayed are charged by frictional electrification in a capillary tube or at an opening section via which the liquid droplets are sprayed
Implementation Method 2
liquid particles in a mist form, which liquid particles have (I) an average diameter of not less than 100 nm but not more than 10 μm and (II) an average charge number of not less than +40 but not more than +40000
Data Source
AI summary
According to the present invention, an arbitrary active constituent is sprayed stably so as to treat a target space. A method of the present invention, for treating a target space, includes the step of spraying, in the target space, a composition in an effective amount, the composition containing (i) a solvent and (ii) an electrolyte having a pK of not less than −10 but not more than 7, which pK is a dissociation constant with respect to water, the composition being sprayed as liquid particles in a mist form, which liquid particle have (I) an average particle diameter of not less than 100 nm but not more than 10 μm and (II) an average charge number of not less than +40 but not more than +40000.