Induction Cooker Switching Element Arrangement for Heat Dissipation
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Solution Overview
Problem
Induction heat cooking apparatuses with multiple heating coils require a large number of switching elements, increasing the product's volume and cost, and generating excessive heat.
Innovation Solution
An electronic induction heat cooking apparatus with a minimum number of switching elements, where the switching elements are arranged to minimize heat generation, and a controller is used to efficiently control the heating coils, with the switching element generating maximum heat positioned closest to a cooling fan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple heating coils are operated using separate inverter circuits, then each heating coil can be independently controlled, but the number of switching elements increases, increasing product volume and cost
Solution Approach 1:
The patent combines multiple heating coils into a single inverter circuit, merging what would traditionally require separate inverter circuits. This reduces the total number of switching elements needed while maintaining the ability to independently control each heating coil through selective activation of specific switching elements within the shared inverter circuit.
Solution Approach 2:
The single inverter circuit is designed to serve multiple heating coils simultaneously, making it a universal solution that can handle different heating configurations. The switching elements within this inverter can be selectively activated to control different heating coils, providing multi-functional capability without requiring dedicated inverter circuits for each coil.
2Adaptability or versatility
If more heating coils are added to the apparatus, then cooking versatility increases, but the number of switching elements increases proportionally, increasing heat generation
Solution Approach 1:
By merging multiple heating coils into a single inverter circuit, the patent reduces the total number of switching elements required. This consolidation directly reduces the cumulative heat generation from switching elements while preserving cooking versatility through selective activation of switching elements corresponding to different heating coils.
3Device complexity
If switching elements are arranged without considering heat dissipation, then device simplicity is maintained, but heat generation causes reliability issues
Solution Approach 1:
The patent applies local quality by strategically positioning switching elements within the inverter circuit based on their heat generation characteristics. Switching elements that generate more heat are positioned in locations with better heat dissipation conditions, while those generating less heat are positioned elsewhere. This localized optimization of arrangement improves overall heat dissipation efficiency without significantly increasing device complexity.
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 allows for efficient control of multiple heating coils with a reduced number of switching elements, decreasing the apparatus's size and production costs while minimizing heat generation.
Implementation Method 1
a rectifier for rectifying an input voltage and outputting a direct current (DC) voltage
Implementation Method 2
a plurality of switching elements for switching the DC voltage output through the rectifier
Implementation Method 3
passing high-frequency current through a working coil or a heating coil and heating a cooking utensil by eddy current flowing when a strong line of magnetic force generated by the high-frequency current passes through the cooking utensil
Implementation Method 4
heating a cooking utensil by eddy current flowing when a strong line of magnetic force generated by the high-frequency current passes through the cooking utensil
Implementation Method 5
a cooling fan for cooling the plurality of switching elements
Data Source
AI summary
An electronic induction heat cooking apparatus is provided. The electronic induction heat cooking apparatus includes a rectifier for rectifying an input voltage and outputting a direct current (DC) voltage, a plurality of switching elements for switching the DC voltage output through the rectifier, a cooling fan for cooling the plurality of switching elements, a plurality of heating coils for heating a cooking utensil by controlling the plurality of switching elements, and a controller for controlling the plurality of switching elements according to a plurality of operation modes. In an operation mode for generating maximum heat among the plurality of operation modes, a switching element for generating maximum heat among the plurality of switching elements is arranged closer to the cooling fan than at least one of the other switching elements.