Housing assembly and cooking appliance
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Solution Overview
Problem
Electromagnetic induction heating cooking appliances, such as IH rice cookers, face high temperature issues due to the metal housing forming a closed loop circuit, which induces excessive heat from the magnetic field generated by the induction coil disk.
Innovation Solution
A housing assembly with a metal housing having disconnected portions and insulating members that connect these portions, forming a closed-loop open circuit structure, thereby weakening magnetic field induction and reducing temperature rise while maintaining the integrity and appearance of the appliance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the metal housing is formed integrally by adopting a tail end riveting mode to form a closed loop, then the structural integrity and appearance of the housing assembly is improved, but the metal housing is liable to sensing the magnetic field generated by the electromagnetic coil disk to generate heat, resulting in very high temperature
Solution Approach 1:
The metal housing is divided into multiple disconnected portions rather than forming a complete closed loop. This segmentation breaks the continuous conductive path, reducing the ability of the housing to sense the magnetic field and generate heat through electromagnetic induction, while still maintaining sufficient structural support when combined with insulating members.
Solution Approach 2:
Insulating members are introduced as intermediary elements between the disconnected portions of the metal housing. These insulating members connect the metal portions mechanically while electrically isolating them, preventing the formation of a closed circuit that would allow strong magnetic field sensing and heat generation.
2Ease of manufacture
If the metal housing is formed integrally by adopting a tail end riveting mode, then the manufacturing process is simplified, but the closed loop structure easily induces magnetic field generated by induction coil disk to produce heat
Solution Approach 1:
The housing is segmented into disconnected metal portions that can be manufactured separately and then assembled with insulating members. This approach maintains manufacturing simplicity while eliminating the harmful heat generation effect by breaking the closed loop structure.
Solution Approach 2:
The housing assembly uses composite construction combining metal portions with insulating members. This composite structure maintains ease of manufacture through modular assembly while the insulating material prevents magnetic field induction and heat generation.
3Temperature
If insulating members are used to connect disconnected portions of metal housing, then magnetic field induction is weakened and temperature rise is reduced, but the housing assembly structure becomes more complex
Solution Approach 1:
The insulating members are designed to integrate multiple functions: they connect the disconnected metal portions mechanically, provide electrical insulation to break the circuit, and can serve as mounting structures for other components. This merging of functions reduces overall device complexity despite adding insulating elements.
Solution Approach 2:
The insulating members are designed as multi-functional components that simultaneously provide structural connection, electrical insulation, and potential mounting capabilities. This universality reduces the need for separate components, thereby limiting the increase in 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 effectively reduces temperature rise by breaking the closed loop circuit, ensuring the appliance's safety and reliability while maintaining its aesthetic and functional integrity.
Implementation Method 1
the metal housing forms a closed loop and is liable to sensing a magnetic field generated by an electromagnetic coil disk to generate heat
Data Source
AI summary
The present disclosure provides a housing assembly and a cooking appliance. The housing assembly includes a metal housing and an insulating member. The metal housing takes the shape of a disconnected ring on the whole, with a notch formed at a disconnected portion of the metal housing; the insulating member connects a disconnected end of the metal housing and covers the notch so that the housing assembly forms a closed-loop open circuit structure. According to the housing assembly provided by the present disclosure, as the metal housing is disconnected, and the disconnected portion of the metal housing is connected by the insulating member, so that the housing assembly is disconnected on the circuit, therefore, the magnetic field induction of the metal housing can be weaken to reduce the temperature rise.