Pressure Cooker Control Linkage for Multi-Pressure Operation
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Solution Overview
Problem
Existing pressure cooking appliances are ergonomically challenging, prone to user error due to complex control mechanisms and lack of distinct pressure settings, leading to confusion and reliability issues.
Innovation Solution
A pressure cooking appliance with a single, intuitive control mechanism that allows for multiple pressure settings through a first transmission part movable relative to the locking/unlocking and pressure management means, decoupled from the selector's movement, ensuring clear differentiation between locking and unlocking kinematics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single rotary handle with three positions is used to control locking/unlocking and decompression, then the device becomes more compact and easier to operate, but it cannot provide multiple distinct pressure levels
Solution Approach 1:
The control mechanism is segmented into two independent parts: a rotary handle for locking/unlocking control and a separate selector switch for pressure level selection. This segmentation allows each component to perform its specific function optimally without compromising the other, resolving the contradiction between operational simplicity and pressure level versatility.
Solution Approach 2:
The rotary handle serves multiple functions: it controls both the locking/unlocking mechanism and the decompression process. By integrating these functions into a single component, the device maintains compactness and ease of operation while the separate selector adds pressure level control capability.
2Adaptability or versatility
If a rotary plate with multiple positions for different pressure levels is added, then multiple pressure settings become possible, but the device size increases and the rotary plate becomes more fragile
Solution Approach 1:
The control system is divided into separate functional components: the rotary handle for mechanical locking/unlocking and a distinct selector switch for pressure level selection. This segmentation avoids the need for a complex multi-position rotary plate, maintaining structural integrity while providing multiple pressure settings.
Solution Approach 2:
A selector switch acts as an intermediary component between the user and the pressure management system. This intermediary provides a simple interface for selecting pressure levels without requiring a complex rotary plate structure, thus avoiding fragility and size increases.
3Device complexity
If locking and unlocking kinematics are made symmetric with the same angular travel, then the mechanism becomes simpler, but user confusion increases due to indistinguishable handling
Solution Approach 1:
The locking and unlocking kinematics are made asymmetric by giving them different angular travels: locking requires a larger angular travel (45 degrees) while unlocking requires a smaller angular travel (30 degrees). This asymmetry creates distinct tactile feedback and operational feel, allowing users to easily distinguish between locking and unlocking actions despite the underlying mechanical symmetry.
Solution Approach 2:
Visual indicators (analogous to color changes in TRIZ) are provided to show the current state of the locking mechanism. Different visual cues are displayed for locking, unlocking, and intermediate positions, helping users understand the current state and reducing confusion during operation.
Data Source
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AI summary
The invention relates to a cooking apparatus forming a cooking chamber, a locking/unlocking means, a pressure control means (6), a selector (15) for controlling the locking/unlocking means and the pressure control means (6), characterized in that it comprises a first transmission component (17) which is able to move in relation to a moving device consisting of the locking/unlocking means or the pressure control means (6) and is designed to act on the position of said moving device, said first transmission component (17) being designed to move while the selector (15) remains immobile and/or to remain immobile while the selector (15) moves. Pressure cooking apparatus.