Moving Heater Choke for Microwave Leakage Control
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Solution Overview
Problem
Existing microwave ovens with moving heater modules face issues with electromagnetic wave leakage, which can damage the controller and affect cooking efficiency.
Innovation Solution
A cooking appliance design featuring a moving heater module with a choke mechanism between the heater module and the cavity to attenuate microwaves, minimizing leakage and enhancing space utilization by allowing the heater to descend closer to the food, while the housing is a separate component for easier mounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the moving heater module is positioned close to the food for efficient heating, then heating speed is improved, but electromagnetic wave leakage increases and can damage the controller
Solution Approach 1:
A choke structure is introduced as an intermediary component between the moving heater module and the controller. This choke acts as a microwave shield that blocks electromagnetic waves from reaching the controller while allowing the heater to operate close to the food for efficient heating.
Solution Approach 2:
The harmful electromagnetic waves are extracted or separated from the useful heating function by placing the choke structure specifically in the path between the heater and controller, allowing the heater to maintain its proximity to food while the choke selectively blocks the harmful radiation.
2Device complexity
If the controller is integrated with the moving heater module for compact design, then device complexity is reduced, but electromagnetic wave damage to the controller increases
Solution Approach 1:
The choke structure serves as a protective intermediary that enables the controller to be integrated with the moving heater module while still protecting it from electromagnetic damage. The choke is positioned between the heater and controller to block harmful waves.
Solution Approach 2:
The choke structure converts the potentially harmful electromagnetic environment into a safe operating condition for the integrated controller, allowing the benefits of integration (compact design, reduced complexity) to be realized without sacrificing controller reliability.
3Productivity
If the moving heater module is permanently positioned in the cooking space for quick heating, then heating efficiency is improved, but space utilization decreases
Solution Approach 1:
The moving heater module is designed to be dynamically positionable between the accommodation space and the cooking space. This dynamic positioning allows the heater to be close to the food when heating is needed, and stored in the accommodation space when not in use, maximizing cooking space utilization.
Solution Approach 2:
The heater module utilizes the vertical dimension by moving between two distinct spaces (accommodation space above and cooking space below). This dimensional approach allows the heater to access the cooking space for efficient heating while being stored in the accommodation space to maintain full cooking space availability.
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 effectively reduces microwave penetration into the controller, minimizes damage, and allows for quicker heating by positioning the heater closer to the food, with improved space efficiency and easier installation.
Implementation Method 1
A microwave oven is a cooking device that uses microwaves to heat and cook food to be cooked using microwaves, molecules constituting food vibrate with microwaves, and as a result, the temperature of food rises due to frictional heat generated between the constituent molecules.
Implementation Method 2
A moving heater choke for attenuating microwaves is provided in the gap. The moving heater choke between the outer circumferential portion of the moving heater module and the inner surface of the cavity can minimize the penetration of microwaves into the moving heater module controller
Data Source
AI summary
A cooking appliance includes a cavity having a cooking space formed therein and an accommodation space, which is smaller than the cooking space, formed above the cooking space; a microwave generator for generating microwaves to the cooking space; a moving heater module accommodated in the accommodation space and including a heater; a moving heater module control unit for controlling the moving heater module; and a moving heater choke provided between the outer peripheral part of the moving heater module and the inner surface of the cavity.