Microwave Oven Cooling Air Passage Design for Electrical Component Heat Dissipation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Microwave ovens in the related art suffer from poor cooling efficiency, which affects heating performance and reduces the service life of the appliance.
Innovation Solution
The microwave oven design includes an outer and inner housing with specific cooling air inlets and outlets, a cooling fan, and an electrical component positioned within a cooling air passage to enhance cooling efficiency, along with dual fans for smoke and oil smoke management, improving both cooling and heating performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cooling structure is used, then device complexity is reduced, but cooling efficiency deteriorates
Solution Approach 1:
The cooling system is segmented into multiple independent air passage channels: a first air passage for cooling the electrical component and a second air passage for cooling the fan. This segmentation allows each channel to be optimized for its specific cooling target, improving overall cooling efficiency while maintaining manageable structural complexity through modular design.
Solution Approach 2:
Different regions of the housing are assigned different cooling functions: the first cooling air inlet is positioned to direct cooled air to the electrical component, while the second cooling air inlet directs air to the fan. This local differentiation ensures that each component receives appropriately directed cooling air, enhancing cooling efficiency without requiring a completely complex unified system.
2Reliability
If cooling air passage is added for electrical component, then cooling efficiency is improved, but device complexity increases
Solution Approach 1:
The cooling system merges the electrical component cooling passage and fan cooling passage into a unified housing structure with coordinated air inlets and outlets. The first and second cooling air passages are integrated within the housing, sharing common structural elements while maintaining separate flow paths. This merging approach improves cooling efficiency for both components simultaneously while avoiding the complexity of completely separate cooling systems.
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 design achieves excellent cooling efficiency and maintains heating performance by effectively cooling the electrical components and improving smoke and oil smoke suction capabilities.
Implementation Method 1
a cooling fan having an air inlet communicated with the first cooling air inlet via an air inlet passage and an air outlet communicated with the cooling air passage
Implementation Method 2
an electrical component disposed within the cooling air passage
Data Source
AI summary
A microwave oven includes an outer housing defining an accommodating chamber therein and having a first cooling air inlet and a first cooling air outlet therein; an inner housing disposed within the accommodating chamber and defining a heating chamber therein, the heating chamber having a second cooling air inlet and a second cooling air outlet communicated with the first cooling air outlet, a cooling air passage being defined between an upper surface of the inner housing and a top wall of the accommodating chamber and communicated with the second cooling air inlet; a cooling fan having an air inlet communicated with the first cooling air inlet via an air inlet passage and an air outlet communicated with the cooling air passage; and an electrical component disposed within the cooling air passage.