Thermostatic Gas Valve Threaded Shaft Setting
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Solution Overview
Problem
Conventional thermostatic gas valves for domestic cooking ovens require an extra fixture for setting, which prolongs the process and lacks precision in temperature control.
Innovation Solution
A thermostatic gas valve with a capped shaft and threaded parts allows precise setting without additional fixtures, utilizing a lever to actuate the safety valve and a lid to conceal the pin, enabling precise gas regulation and eliminating the need for extra parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an extra fixture is used for setting the gas valve after production, then the valve can be set, but the process duration is prolonged and precision is reduced
Solution Approach 1:
The patent integrates the setting function directly into the valve body by incorporating a threaded shaft that allows the valve to be set during the production process itself, merging the setting operation with the manufacturing process and eliminating the need for separate post-production fixture-based setting operations
Solution Approach 2:
The patent extracts the setting function from the separate fixture-based process and embeds it into the valve structure through the threaded shaft mechanism, allowing setting to be performed directly on the valve without external fixtures
2Ease of operation
If the pin is exposed outside the valve body, then the safety valve can be actuated, but the structure is more complex and less aesthetically pleasing
Solution Approach 1:
The patent nests the pin mechanism within the valve body structure, where the pin is housed inside the body and actuated through internal mechanisms, similar to how nested dolls contain smaller dolls within larger ones, thereby concealing the pin while maintaining functionality
Solution Approach 2:
The patent introduces an intermediary mechanism that translates external actuation forces into internal pin movement, allowing the safety valve to be actuated without direct exposure of the pin, thus simplifying the external structure while maintaining operational 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
The solution provides faster and more precise setting of gas valves, ensuring accurate temperature control and efficient operation of domestic cooking ovens by integrating a unibody cam and switch holder for multiple functions without additional parts.
Implementation Method 1
the heat-sensitive thermo-element is heated, and the diaphragm is automatically opened by pressing the membrane because of the expansion of the fluid herein
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The invention relates to thermostatic safety or unsafety gas valves (1) which check the upper and lower burner flame in gas-fired domestic cooking ovens and control the flame by checking gas inlet and outlet in the case that the temperature exceeds or decreases below the set value. Said gas valve (1) consists of a body, a lid (1.3.6), a safety valve (1.3.14), lever (1.3.4), pin (1.3.5) and a shaft (1.3.3), wherein said shaft (1.3.3) is designed as a capped (1.3.3.1) manner. The most important characteristic that distinguishes the gas valve (1) of the invention from the present thermostatic gas valves (2) is that the gas valve (1) is set in a precise manner by the threaded shaft (1.3.8) located in the male (1.3.13) after its production. Thus, the requirement for an extra fixture for setting the gas valve (1) is eliminated, and a more precise setting is provided.