Microwave Cooker Venting Structure for Pressure Relief Safety
Solution Overview
Problem
Existing microwave oven cookers face issues with productivity due to long bonding times and thermal damage from silicone adhesives, and risk of explosion when ventilation holes are clogged, leading to safety hazards and property damage.
Innovation Solution
A microwave oven cooker with a silicone packing system that decouples to reduce pressure and a ventilation hole structure with ribs and passages to prevent explosions, ensuring safe pressure release even if the ventilation hole is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If silicone adhesive is used to bond the pan to the main body, then bonding strength is improved, but productivity decreases due to long bonding and curing time
Solution Approach 1:
The patent removes the adhesive bonding process entirely and replaces it with a mechanical coupling structure. The pan is directly inserted into a coupling groove in the main body, eliminating the need for silicone adhesive and its associated long curing time, thereby resolving the contradiction between bonding strength and productivity.
Solution Approach 2:
The patent replaces the chemical bonding system (silicone adhesive) with a mechanical coupling system (coupling groove and inserted pan structure). This substitution eliminates the curing time requirement while maintaining secure bonding, thus improving productivity without sacrificing bonding strength.
2Strength
If silicone adhesive is used to bond the pan to the main body, then bonding is achieved, but thermal damage occurs when temperature exceeds the heat-resisting limit of the adhesive
Solution Approach 1:
The patent extracts the silicone adhesive from the bonding system and replaces it with a heat-resistant mechanical coupling structure. The coupling groove and pan insertion design can withstand high temperatures without degrading, eliminating the thermal damage problem that occurs when temperature exceeds the adhesive's heat-resisting limit.
Solution Approach 2:
The patent changes the material parameter from temperature-sensitive silicone adhesive to temperature-resistant mechanical structure. The mechanical coupling components are designed to maintain their structural integrity and bonding capability at high cooking temperatures, thus preventing thermal damage.
3Power
If direct heat transfer from pan to main body occurs, then heating efficiency is improved, but thermal damage and sparks occur in the main body
Solution Approach 1:
The patent introduces an intermediary coupling structure (the coupling groove and pan insertion interface) between the pan and main body. This intermediary allows controlled heat transfer while preventing direct contact that would cause thermal damage and sparks, thus maintaining heating efficiency without the harmful effects.
Solution Approach 2:
The patent uses a flexible coupling design that allows thermal isolation between the pan and main body. The coupling structure acts as a thermal barrier that prevents excessive heat from transferring directly to the main body, avoiding thermal damage and spark generation while maintaining adequate heating efficiency.
4Stability of the object's composition
If ventilation hole is clogged or closed, then airtightness is maintained, but internal pressure increases causing explosion
Solution Approach 1:
The patent implements a dynamic pressure relief mechanism where the coupling between the pan and main body can change state based on pressure conditions. When internal pressure becomes abnormally high, the coupling automatically decouples to allow pressure release, preventing explosion while maintaining airtightness during normal operation.
Solution Approach 2:
The patent creates a self-regulating system where the coupling structure automatically responds to pressure changes without external intervention. The coupling decouples itself when pressure exceeds safe levels, providing automatic pressure relief and maintaining safety without requiring manual monitoring or control systems.
5Stability of the object's composition
If silicone packing is used for close coupling, then sealing is improved, but pressure reduction capability decreases when ventilation is blocked
Solution Approach 1:
The patent employs a dynamic sealing solution where the silicone packing can transition from a sealed state to a decoupled state based on pressure conditions. During normal operation, the packing maintains sealing; when pressure becomes abnormally high, the packing decouples from the coupling groove to enable pressure relief, thus balancing sealing and pressure relief capabilities.
Solution Approach 2:
The patent changes the operational parameters of the silicone packing from static sealing to dynamic sealing-with-pressure-relief. The packing is designed to maintain sealing under normal pressure but automatically changes its state to allow decoupling and pressure release when pressure exceeds threshold levels, thus maintaining both sealing integrity and pressure relief capability.
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
Prevents explosions and thermal damage by effectively reducing pressure and maintaining safety, while improving assembly efficiency and productivity compared to traditional methods.
Implementation Method 1
a silicone packing is provided in a section of the close coupling between the pan and the main body, and if the internal pressure of the cooker arises abnormally, the silicone packing is decoupled from the main body so as to reduce the pressure
Implementation Method 2
a heating sheet receiving the microwaves and generating heat
Implementation Method 3
the insulating support may be composed of a self-elastic ceramic wool material so that if pressure is applied from upside, it elastically supports the heating sheet and the pan upward
Data Source
Figure 1~3
Figure 4~5
AI summary
A heating cooker for a microwave oven in which in a main body through which microwaves are transmitted, an upper portion of a metallic pan is closely coupled, and a heating sheet receiving the microwaves and generating heat and an insulating support are coupled in order onto an undersurface of the pan, the heating cooker including a safety device configured such that a silicone packing is provided in a section of the close coupling between the pan and the main body, and so that if internal pressure of the cooker rises abnormally, the silicone packing is decoupled from the main body so as to reduce the pressure.