Opposite-Bend Door Choke for Microwave Leakage Shielding
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Solution Overview
Problem
Microwaves leak through the gap between the cavity and the door of microwave cooking apparatuses, leading to ineffective electromagnetic interference shielding.
Innovation Solution
A cooking apparatus with a door choke design featuring a first and second attachment member with bent parts, where the bending directions of these members are opposite to each other, forming a space that enhances inductance and capacitance components for effective electromagnetic interference shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional door choke design is used, then the structure is simple, but electromagnetic interference shielding is ineffective due to microwave leakage through the gap between cavity and door
Solution Approach 1:
The door choke is divided into a first attachment member and a second attachment member that are separated from each other, forming a space between them. This segmentation creates a more complex structure that effectively blocks microwave leakage through the cavity-door gap while maintaining electromagnetic interference shielding.
2Reliability
If the first and second attachment members are separated to form a space, then inductance and capacitance components increase for better shielding, but the device complexity increases
Solution Approach 1:
The first and second attachment members are bent in opposite directions to create a three-dimensional space between them, rather than arranging them in a simple linear or planar configuration. This dimensional approach increases the inductance and capacitance components more effectively, enhancing electromagnetic interference shielding while managing structural complexity.
3Reliability
If a door choke with bent parts is used, then electromagnetic interference shielding is improved, but manufacturing precision requirements increase
Solution Approach 1:
The first and second attachment members are designed with asymmetric bent parts that extend in opposite directions. This asymmetric configuration creates the necessary space between the members while maintaining consistent electromagnetic interference shielding performance, though it does require precise manufacturing to achieve the intended geometric relationships.
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 door choke design effectively shields electromagnetic interference, preventing microwave leakage and ensuring efficient operation of the cooking apparatus by increasing the inductance and capacitance components, thereby improving the apparatus's ability to shield microwaves within the designated frequency range.
Implementation Method 1
a door choke attached to the door and including a first attachment member including at least two bent parts and a second attachment member including at least two bent parts so as to be separated from the first attachment member to form a space
Implementation Method 2
achieving effective electromagnetic interference shielding... by increasing the inductance and capacitance components
Data Source
AI summary
Provided herein are a door choke and a cooking apparatus including the same. The cooking apparatus includes a front plate forming the front surface of a cavity, a door to open and close the cavity, and a door choke including a first attachment member attached to the door and including at least two bent parts and a second attachment member attached to the door and including at least two bent parts so as to be separated from the first attachment member to form a space, and a bending direction of the first attachment member and a bending direction of the second attachment member are opposite to each other. Thereby, effective electromagnetic interference shielding is achieved.