Electrostatic Spray Device Conductor Overlap for Straightness
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Solution Overview
Problem
Existing electrostatic spray devices struggle to maintain the straightness of the liquid spray, especially in high-humidity environments, due to limitations in voltage height and liquid dispersion.
Innovation Solution
A hand-held electrostatic spray device with a voltage source, a base electrode with a linear tip, an additional electrode, and a conductor that is electrically isolated from the electrodes and positioned on the spray side of the liquid, with at least a part of the conductor overlapping the additional electrode in a direction orthogonal to the spray direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a conventional electrostatic spray device uses limited voltage height, then the device can be hand-held and portable, but the straightness of the liquid spray deteriorates and liquid dispersion increases
Solution Approach 1:
The electrostatic charging system is segmented into multiple electrodes: a base electrode with a linear tip portion for primary charging, an additional electrode for secondary charging, and a conductor portion for field enhancement. This segmentation allows each component to contribute to spray straightness while maintaining overall system portability through distributed functionality.
Solution Approach 2:
The conductor portion is positioned to overlap with the additional electrode in a direction orthogonal to the spray direction, creating a three-dimensional electric field configuration. This dimensional arrangement enhances the electric field distribution without increasing voltage height, thereby improving spray straightness while maintaining hand-held portability.
2Manufacturing precision
If the voltage height is increased to improve spray straightness, then the spray straightness improves, but the device becomes too large to be hand-held
Solution Approach 1:
Instead of increasing voltage height, the invention changes the geometric parameters of the electrode system - specifically the linear tip portion shape, the overlapping arrangement of electrodes, and the conductor positioning. These parameter changes optimize the electric field distribution to improve spray straightness without requiring higher voltage or larger device size.
3Area of stationary object
If the liquid spray disperses in high-humidity environments, then the spray range increases, but the density and homogeneity of the formed film deteriorate
Solution Approach 1:
The conductor portion acts as an intermediary element between the additional electrode and the liquid spray. It modifies the electric field distribution in the spray region, providing field enhancement that maintains liquid coherence and reduces dispersion. This intermediary structure helps achieve both adequate spray range and high film homogeneity even in high-humidity environments.
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 device improves the straightness of the liquid spray, concentrating the spray range and increasing density, which enhances the adhesiveness and homogeneity of the film formed on the target.
Implementation Method 1
a base electrode for electrically charging the liquid to which a voltage is applied from the voltage source
Implementation Method 2
an electrostatic spray device which is made with a dimension that a user is capable of holding with a hand and imparts a liquid composition to which a high voltage is applied from an emitter electrode connected to a high-voltage generator
Implementation Method 3
a conductor which is electrically isolated from the base electrode and the additional electrode and is disposed on a spray side of the liquid from the additional electrode, at least a part of the conductor overlapping with the additional electrode in a direction orthogonal to a spray direction of the liquid
Data Source
AI summary
Provided is a hand-held type electrostatic spray device (1) spraying an electrically charged liquid, the electrostatic spray device (1) comprising: a voltage source; a needle-shaped electrode (53: a base electrode) for electrically charging the liquid to which a voltage is applied from the voltage source and which includes a linear tip portion; a second bottom portion (32: an additional electrode) of a second electrode member (3) to which a voltage is applied from the voltage source; and a conductor (6) which is electrically isolated from the second bottom portion (32) and the needle-shaped electrode (53) and is disposed on a spray side of the liquid from the second bottom portion (32), at least a part of the conductor (6) overlapping with the second bottom portion (32) in a direction orthogonal to a spray direction of the liquid.