Electrostatic Insect Repellent Using High-Voltage Field
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Solution Overview
Problem
Existing insect repellent methods, such as topical applications and ultrasonic devices, are ineffective in providing long-lasting protection against biting insects like mosquitoes, as they require repeated chemical applications and may expose users to chemical residues or unproven effectiveness.
Innovation Solution
An electrostatic insect repellent system using a high-voltage generator, such as a Villard cascade or Van de Graaff generator, creates a surrounding field that repels insects by connecting to a conductive garment or directly to the user's skin, eliminating the need for repeated chemical applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If topical repellents are applied to the user, then skin protection is provided, but repeated applications are required and chemical exposure occurs
Solution Approach 1:
The patent replaces chemical repellent systems with an electrostatic field generation system. A voltage multiplier circuit generates high voltage (up to 20,000V) that creates an electrostatic field around the user's body, physically repelling insects without chemical substances. This substitution eliminates the need for repeated applications and chemical exposure while maintaining protection effectiveness.
Solution Approach 2:
The patent changes the operational parameters from chemical concentration and application frequency to electrostatic field strength and voltage level. By adjusting the voltage output of the multiplier circuit, the system maintains effective insect repulsion over extended periods without requiring reapplication, thus extending the duration of action parameter.
2Reliability
If chemical repellents are used, then insect repulsion is achieved, but user exposure to chemicals and burnt residues occurs
Solution Approach 1:
The patent substitutes chemical-based repulsion mechanisms with electrostatic field-based repulsion. The voltage multiplier generates an electrostatic field that creates a physical barrier around the user, repelling insects through electrostatic forces rather than chemical deterrence. This eliminates all harmful chemical exposure while maintaining reliable insect repulsion.
3Ease of operation
If ultrasonic devices are used, then insect repulsion is attempted, but effectiveness is unproven
Solution Approach 1:
The patent replaces ultrasonic vibration-based repulsion with electrostatic field-based repulsion. The voltage multiplier circuit generates stable high voltage that creates a consistent electrostatic field around the user, providing proven and reliable insect repulsion while maintaining ease of operation through portable battery-powered design.
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 a high repellency rate of 97.48% at 9800V, providing continuous protection against mosquitoes without the need for reapplication, as the electrostatic field effectively deters insects from landing on the user's skin.
Implementation Method 1
an electrostatic generator is used to form a high voltage field surrounding the user
Implementation Method 2
The electrostatic generator includes a voltage multiplier, which may include a Villard cascade
Implementation Method 3
the electrostatic generator is connected to a conductive garment from which the field emanates
Data Source
AI summary
An apparatus and method are provided for repelling insects. An electrostatic field is provided about a user by: connecting the user directly to a source of high voltage and low current; or providing a conductive garment about the user and connecting the conductive garment to a source of high voltage and low current. At a sufficiently high voltage, the electrostatic field become effective at repelling insects from the user.