Cooking Gas Valve Access Structure for Injector Adjustment
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Solution Overview
Problem
Existing gas-powered cooking devices require technical personnel to perform time-consuming operations to switch between gas cylinder and natural gas modes, involving the removal and reassembly of parts, which is undesirable and prone to errors due to the need for front panel disassembly and misalignment of components during the process.
Innovation Solution
A valve device with a front panel that includes an open hole aligned with the injector adjustment device's horizontal axis and an L-shaped tab for guiding a screwdriver, allowing direct access and adjustment without removing the front panel, stabilizing the valve housing during rotation, and facilitating easy switching between gas sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the front panel is removed to access the injector adjustment device, then the adjustment can be performed, but the operation becomes time-consuming and complex
Solution Approach 1:
The front panel is segmented to include a specific access opening that provides direct access to the injector adjustment device. This segmentation allows the adjustment function to be accessed independently without requiring removal of the entire front panel, thus resolving the contradiction between ease of access and time consumption.
Solution Approach 2:
An intermediary access opening is introduced in the front panel that serves as a mediator between the user and the injector adjustment device. This opening allows the adjustment device to be accessed and operated without direct removal of the front panel, eliminating the need for time-consuming disassembly and reassembly operations.
2Ease of repair
If the front panel is removed to access the injector adjustment device, then the adjustment can be performed, but the risk of misalignment and errors increases
Solution Approach 1:
The front panel is divided to create a dedicated access opening that maintains the structural integrity of the remaining panel. This segmentation allows access to the injector adjustment device while preserving the proper alignment and positioning of all components, preventing misalignment errors that would occur with complete panel removal.
Solution Approach 2:
The access opening acts as an intermediary that provides a controlled access path to the injector adjustment device. This intermediary structure ensures that components remain properly aligned and positioned during adjustment operations, eliminating the misalignment risks associated with complete panel removal and reassembly.
3Ease of operation
If the control knob is rotated to operate the valve, then the valve function is activated, but the valve assembly tends to rotate and become disengaged
Solution Approach 1:
An asymmetric L-shaped tab is introduced into the valve assembly structure. This asymmetric feature creates a mechanical constraint that prevents rotational movement of the valve assembly while allowing the control knob to be operated. The asymmetric geometry ensures that the valve remains stable and properly positioned during control operations.
Solution Approach 2:
The L-shaped tab provides a preliminary counteracting force against the rotational torque generated by control knob operation. This preliminary anti-action prevents the valve assembly from rotating and becoming disengaged, maintaining stable positioning throughout the operation of the control mechanism.
Data Source
AI summary
The valve device has a gas control valve housing and a front plate which serves the support and fixing of the valve housing. The front plate has a front elevation (14) which is attached at the front side of the valve housing. A gas injector is provided which has an adjusting element attached at the rear side of the plate. An open hole is provided at a point of the front elevation of the front plate. The hole coincides with the horizontal axis of an injector adjuster (11).