Fryer
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Solution Overview
Problem
Existing food preservation methods using electric fields are complex, costly, and require significant infrastructure, limiting their application and efficiency, especially in existing refrigerators, and pose safety risks due to high voltages and electrode installation challenges.
Innovation Solution
A space potential generator with a transformer, feedback control circuit, and a static electricity discharger covered with an insulating material, which generates a weak current and forms an electric field without grounding, allowing for efficient and wide-range electric field formation without the need for extensive electrode installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional electric field preservation methods using multiple electrodes are used, then food preservation effect is achieved, but device complexity and installation cost increase significantly
Solution Approach 1:
The patent extracts the grounding electrode from the system, using only a single non-grounded high-voltage electrode. The electrode is connected to a high-voltage generator that produces alternating polarity voltages, eliminating the need for a complex multi-electrode grounding structure while maintaining preservation effectiveness through the alternating electric field
Solution Approach 2:
The single electrode structure serves multiple functions: it generates the electric field for preservation, alternates polarity to prevent charge buildup, and eliminates the need for separate grounding electrodes. This multi-functional design simplifies the overall system while maintaining preservation reliability
2Area of stationary object
If multiple electrodes are installed to cover the refrigerator space, then electric field coverage is improved, but installation time and facility investment increase
Solution Approach 1:
The patent removes the need for multiple electrodes by extracting only the essential high-voltage generation function. A single electrode with alternating polarity connection provides sufficient coverage throughout the refrigerator space, dramatically reducing installation complexity and time
Solution Approach 2:
The patent transitions from a multi-point electrode distribution approach to a single-point high-voltage source approach. The alternating polarity voltage propagates electric field effects throughout the three-dimensional refrigerator space, achieving wide coverage without requiring multiple discrete electrode installations
3Strength
If high voltage is applied to large-sized electrodes, then electric field strength is sufficient, but electricity cost and safety risks increase
Solution Approach 1:
The patent employs periodic alternating polarity voltage from the high-voltage generator, switching between positive and negative cycles. This periodic action maintains sufficient electric field strength for preservation while reducing average power consumption compared to continuous high-voltage application, and eliminates safety risks associated with permanent high-voltage charging
Solution Approach 2:
The patent changes the voltage parameter dynamically through alternating polarity cycles. The voltage magnitude is optimized for effective preservation during each half-cycle, while the alternating nature prevents cumulative charge buildup that would require持续 high power input, thereby reducing overall electricity 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 solution enables effective food preservation and oil protection in a compact, cost-effective manner, reducing bacteria growth, extending food freshness, and preventing oil deterioration, while ensuring safety by eliminating direct contact risks and corona discharge.
Implementation Method 1
a transformer that is formed by magnetically connecting a primary coil and a secondary coil
Implementation Method 2
the static electricity discharger is covered with an insulating member having a predetermined insulating property suitable for allowing the static electricity discharger to discharge a static electricity of a predetermined voltage to a surrounding space
Data Source
AI summary
A fryer includes a potential generator; and an oil tub installed with a discharging electrode of the potential generator. The potential generator includes a transformer that is composed of a primary coil and a secondary coil; a feedback control circuit that feeds back one terminal of the secondary coil to one terminal of the primary coil to adjust a voltage of the secondary coil; an output control portion that is provided on the other terminal of the secondary coil to impart a predetermined low frequency vibration to an output of the secondary coil which causes the discharging electrode physically vibrates; and the discharging electrode that is formed of a conductive material and provided on the other terminal of the secondary coil via the output control portion. A vibration frequency of the low frequency vibration applied is 40 Hz to 60 Hz which is determined by the output control portion.