Refrigerator Electromagnetic Wave Shield Grounding Without Door Wiring
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Solution Overview
Problem
Refrigerator doors with moving parts pose a challenge for grounding electromagnetic wave shields, as the wiring connecting them to the grounding part is prone to disconnection due to repeated bending and extension, leading to potential electromagnetic wave leakage.
Innovation Solution
The implementation of a structure where the electromagnetic wave shield on the door is in contact with a housing part while closed, with strategically positioned electromagnetic wave shields on the housing and door, ensuring effective grounding without relying on wiring, and embedding shields within the door and housing to prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wiring is provided to ground the electromagnetic wave shield on the moving door, then the electromagnetic wave shield can be effectively grounded, but the wiring is prone to disconnection due to repeated bending and extension
Solution Approach 1:
The patent removes the wiring connection from the moving door structure, extracting the problematic element that caused disconnection. Instead of grounding the door-mounted electromagnetic wave shield through wiring, the shield on the stationary housing provides the grounding function, eliminating the need for flexible wiring connections on the moving door.
Solution Approach 2:
The electromagnetic wave shield on the housing serves multiple functions: it shields the storage chamber and simultaneously provides the grounding function that would otherwise require separate wiring connections on the moving door. This multi-functionality resolves the contradiction by eliminating the wiring requirement.
2Object-affected harmful factors
If an electromagnetic wave shield is provided on the moving door, then electromagnetic wave leakage can be prevented, but grounding becomes difficult due to door movement
Solution Approach 1:
The patent divides the electromagnetic wave shielding function into two segments: a first electromagnetic wave shield on the moving door and a second electromagnetic wave shield on the stationary housing. The second shield on the housing provides the grounding function, while the first shield on the door provides additional shielding without requiring its own grounding connection.
Solution Approach 2:
The second electromagnetic wave shield on the housing acts as an intermediary that provides the grounding function. Instead of directly grounding the first shield on the moving door through wiring, the system uses the second shield on the housing as a mediator to establish the grounding reference.
3Adaptability or versatility
If wiring is repeatedly bent and extended with door opening and closing, then the door can move freely, but the wiring connection becomes unreliable
Solution Approach 1:
The patent extracts the wiring connection from the door assembly, eliminating the component that suffers from repeated bending and extension. The electromagnetic wave shield on the door is designed to function without requiring flexible wiring connections, thereby maintaining door movement freedom while ensuring connection reliability.
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
This configuration allows the refrigerator door to function as an effective electromagnetic wave shield, preventing leakage even when wiring is difficult to ground, ensuring efficient heating of stored objects while maintaining the integrity of the electromagnetic field.
Implementation Method 1
it is necessary to take measures to prevent the electromagnetic waves from leaking outside. In order to prevent the electromagnetic waves from leaking to outside, it is common to provide an electromagnetic wave shield and ground the electromagnetic wave shield
Implementation Method 2
the refrigerator heats a stored object inside the storage chamber using an electromagnetic wave
Data Source
AI summary
A refrigerator according to the present disclosure includes at least one storage chamber and uses an electromagnetic wave to heat a stored object inside the storage chamber. A first electromagnetic wave shield is provided on a door of the storage chamber, and a second electromagnetic wave shield is provided on a housing part of the refrigerator that is in contact with the door while the door is closed. This makes it possible to provide a structure capable of exhibiting a function as an electromagnetic wave shield even for a refrigerator door in which wiring to a grounding part is difficult.