Cooker Lid Position Detection Using Movable Pole for Multi-Mode Safety
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Solution Overview
Problem
Existing electric cookers, particularly pressure cookers, face challenges in ensuring safe and efficient operation across various cooking modes due to inadequate lid status detection, leading to cumbersome operations, potential safety risks, and energy wastage.
Innovation Solution
An apparatus comprising a block on the cooker lid and a movable pole on the cooker body, which engages at different positions to detect the lid's status, allowing for consistent and efficient operation by controlling power supply based on the lid's position relative to the cooker body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rudimentary lid detection mechanism is used to cut off power when the lid is not fully closed, then pressure cooking safety is improved, but the device cannot support other cooking modes (slow cooking, lid removal cooking) and becomes cumbersome and confusing to operate
Solution Approach 1:
The pole is designed to be movable rather than fixed, allowing it to dynamically assume different positions (first location, second location, third location) based on the lid status. This dynamic mechanism enables the system to adapt to multiple cooking modes while maintaining safety, as the pole can indicate different lid positions corresponding to different operational states without requiring separate detection mechanisms for each mode.
2Reliability
If the lid must be fully closed for all cooking modes, then safety is ensured, but energy is wasted when the lid is not properly closed and cooking cannot proceed
Solution Approach 1:
The pole provides visual feedback about the lid status by assuming different positions that correspond to different lid states. This feedback mechanism allows users to immediately see whether the lid is properly positioned for the selected cooking mode, enabling them to correct improper lid placement before starting cooking. This prevents energy waste by ensuring the lid is correctly closed only when necessary for the specific cooking mode being used.
3Device complexity
If a simple on/off power cutoff is used for lid detection, then the device complexity is low, but the user experience becomes frustrating and confusing across different cooking modes
Solution Approach 1:
The pole serves as an intermediary element between the lid and the control system. Instead of directly connecting the lid position to a binary on/off switch, the pole translates various lid positions into distinct visual indicators. This intermediary mechanism maintains relative simplicity while significantly improving ease of operation, as users can intuitively understand the lid status through the pole's position without dealing with confusing binary states across different cooking modes.
Data Source
AI summary
An apparatus for detecting status of a cooker lid relative to a cooker body is provided. The apparatus comprises a block mounted to the cooker lid near its periphery rim, and a pole disposed about an upper rim of the cooker body and being movable relative to the cooker body. The block engages with the pole such that the pole is at a first location relative to the cooker body when the cooker lid is separated from the cooker body; the pole is at a second location relative to the cooker body when the cooker lid is placed on the upper rim of the cooker body and is out of position for a predetermined cooking mode, and the pole is at a third location relative to the cooker body when the cooker lid is placed on the upper rim of the cooker body and is in position for the predetermined cooking mode.