Pressure Cooker Lid Cover Removal for Faster Safe Cooling
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Solution Overview
Problem
Current pressure cooking appliances rely solely on pressure-limiting devices and natural cooling, resulting in slow cooling speeds, which is unsatisfactory for rapid cooking and safe lid opening.
Innovation Solution
A pressure cooking appliance with a lid design featuring a removable cover that exposes the lower lid portion for accelerated cooling, allowing for quicker temperature reduction and safe lid opening, facilitated by a grid structure, handle design, and space for cooling packs or towels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If only pressure-limiting device and natural cooling are used, then the pressure cooking appliance can operate safely, but the cooling speed is slow and wait time is extended
Solution Approach 1:
The lid is divided into two functional portions: a lower lid portion made of high-strength material for pressure containment and an upper lid portion made of insulating material for thermal protection. This segmentation allows the lower lid portion to be exposed for cooling while the upper portion maintains safety insulation, resolving the contradiction between cooling speed and safety.
Solution Approach 2:
The upper lid portion is designed to be removable, transforming the static lid structure into a dynamic one. After cooking, the upper lid portion can be removed to expose the lower lid portion for accelerated cooling, then replaced when cooling is sufficient. This dynamic adjustment optimizes both cooling speed and safety throughout the cooling process.
2Object-affected harmful factors
If the lower lid portion is fully covered by insulating material, then user safety is improved, but cooling efficiency deteriorates
Solution Approach 1:
The lid is divided into two functional portions: a lower lid portion made of high-strength material for pressure containment and an upper lid portion made of insulating material for thermal protection. This segmentation allows the lower lid portion to be exposed for cooling while the upper portion maintains safety insulation, resolving the contradiction between cooling speed and safety.
Solution Approach 2:
The upper lid portion is designed to be removable, transforming the static lid structure into a dynamic one. After cooking, the upper lid portion can be removed to expose the lower lid portion for accelerated cooling, then replaced when cooling is sufficient. This dynamic adjustment optimizes both cooling speed and safety throughout the cooling process.
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 enables rapid cooling of the cooking chamber, reducing wait time for safely opening the lid and allowing cooked food to be enjoyed sooner, while maintaining safety and ergonomic functionality.
Implementation Method 1
the removable cover being removably attachable to the opening portion and operable to expose at least a portion of the lower lid portion for accelerating the cooling of the cooking chamber
Data Source
AI summary
A pressure cooking appliance is provided. The pressure cooking appliance comprises a cooker body and a lid, the lid comprising an upper lid portion, and a lower lid portion lockingly covering the cooker body to form a pressurized cooking chamber therebetween. The upper lid portion covers the lower lid portion from above, and comprises a main lid body and a removable cover, the main lid body comprising an opening portion formed at a central portion of the main lid body for exposing the lower lid portion, the removable cover being removably attachable to the opening portion and operable to expose a portion of the lower lid portion for accelerated cooling of the cooking chamber and speeding up wait time for opening the lid. Further, cooling towel or cooling pack can be placed at the opening portion to help with cooling and allow food to be enjoyed sooner.