Microwave Ventilation Grid Cover Plate Mechanism
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Solution Overview
Problem
The existing microwave cooking devices with ventilation grids mounted via screws are cumbersome and inconvenient for filter screen replacement and cleaning, as the entire grid needs to be detached, making the process time-consuming and prone to screw loosening.
Innovation Solution
A microwave cooking device design featuring a ventilation grid assembly with a through hole and a moveable cover plate that allows for easy access to the filter screen without detaching the grid, enabling convenient replacement and cleaning by moving the cover plate between open and closed positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the ventilation grid is mounted on the shell via a plurality of screws, then the appearance of the microwave cooking device is more beautiful, but the detachment and installation of the ventilation grid are time-consuming and labor-consuming
Solution Approach 1:
The ventilation grid assembly is segmented into two parts: the grid body mounted on the shell and a detachable cover plate. This allows the cover plate to be removed for filter screen access without detaching the entire grid, resolving the contradiction between maintaining appearance (grid stays mounted) and reducing time (cover plate removal is quick).
Solution Approach 2:
The cover plate is extracted as a separate detachable component from the ventilation grid assembly. This enables users to remove only the cover plate for filter maintenance while leaving the main grid body mounted on the shell, thus preserving appearance while minimizing time and effort required for access.
2Ease of operation
If the entire ventilation grid needs to be detached to access the filter screen, then the filter screen can be replaced or cleaned, but the process becomes time-consuming and labor-consuming
Solution Approach 1:
The ventilation grid assembly is divided into a stationary grid body and a movable cover plate. The cover plate can be independently removed to access the filter screen, allowing filter maintenance without detaching the entire grid, thus improving ease of operation while reducing time consumption.
Solution Approach 2:
The cover plate is extracted as a separate removable component that provides access to the filter screen. This allows users to remove only the necessary part (cover plate) for filter maintenance, making the process easier and faster compared to removing the entire grid assembly.
3Reliability
If screws are used to mount the ventilation grid, then the grid can be securely attached, but the screws are easy to loosen
Solution Approach 1:
The cover plate is extracted as a separate component that attaches to the grid body without requiring screws. This eliminates the screw loosening issue while maintaining secure attachment through alternative fastening mechanisms, thus preserving reliability while improving stability of the assembly.
Data Source
AI summary
A microwave cooking device is provided. The microwave cooking device includes a shell defining an air inlet and an air outlet therein; a filter screen disposed at the air outlet; and a ventilation grid assembly. The ventilation grid assembly includes a body defining a through hole therein and disposed on an outer surface of the shell, the through hole being opposite to the filter screen; and a cover plate disposed on the body and moveable between an open position where the through hole is opened by the cover plate and a closed position where the through hole is closed by the cover plate.