Gas control valve, hob and gas oven
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Solution Overview
Problem
Existing gas control valves for cooktops lack the ability to provide a simple and cost-effective means to increase burner output temporarily, as they often require additional gas streams or complex configurations.
Innovation Solution
A gas control valve with a rotatable valve body that can be adjusted from an open position to a booster position, allowing a constant greater fuel gas volume flow, and includes a spring device and timing mechanism for automatic return, ensuring a space-saving and easy-to-assemble design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a gas control valve uses a traditional design with multiple gas streams or complex configurations to increase burner output, then the burner output can be increased, but the device complexity and manufacturing cost increase
Solution Approach 1:
The valve body is designed to be rotatable with a cam mechanism that dynamically changes the gas flow cross-section. By rotating the valve body to different positions (normal position, small fire position, and booster position), the gas flow area is dynamically adjusted to provide different burner outputs including a temporary booster mode without requiring multiple separate gas streams or complex valve configurations
Solution Approach 2:
The invention changes the geometric parameter of the gas flow cross-section by rotating the valve body. The cam-shaped gas flow cross-section in the valve body, when rotated, varies the effective gas flow area to control the gas volume flow. This parameter change approach allows achieving different burner outputs (including booster mode) through a single valve mechanism rather than multiple gas streams
2Power
If a gas control valve is designed to provide temporary increased burner output, then the burner output can be boosted temporarily, but additional mechanisms or complex control systems are required
Solution Approach 1:
The valve incorporates a timing device that automatically returns the valve body from the booster position to the normal position after a predetermined time interval without requiring external control input. This self-service mechanism eliminates the need for complex control systems, buttons, or external timing circuits while still providing temporary booster output capability
Solution Approach 2:
The invention replaces complex electronic or mechanical control systems with a simple cam-based mechanical timing mechanism. The cam profile on the valve body works with a follower to automatically reset the valve position after the booster period, substituting complex control electronics with a straightforward mechanical solution
3Ease of operation
If a gas control valve allows free rotation of the valve body, then the valve is easy to operate, but unwanted position changes may occur
Solution Approach 1:
The valve body is pressed into the valve housing by a spring force that acts as a counterbalancing force. This spring pressure ensures that the valve body remains firmly seated in its selected position (whether normal, small fire, or booster position) and prevents unwanted rotation or position changes, while still allowing intentional rotation when the user applies force to the actuator
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
Enables stepless adjustment of fuel gas flow from open to small fire positions and a constant increased gas flow in the booster position, allowing for temporary high burner output without additional gas streams, preventing unwanted position changes and ensuring efficient assembly.
Implementation Method 1
the gas control valve has a spring device, the valve body being able to be pushed into the valve housing against a spring force of the spring device
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
The invention relates to a gas control valve (7 - 10) for a hob (1), comprising a valve housing (16) and a valve body (23) accommodated in the valve housing (16), wherein the valve body (23) can be turned in a predefined turning direction (29) from a closed position in which the gas control valve (7 – 10 ) is closed to an open position in which the gas control valve (7 - 10) is open, wherein the valve body (23) can be turned in the predefined turning direction (29) beyond the open position to a low-flame position, wherein when the valve body (23) is turned from the open position to the low-flame position a flow volume of combustion gas that can flow through the gas control valve (7 - 10) can be controlled, more particularly continuously, wherein the valve body (23) can be turned against the predefined turning direction (29) to a booster position, and wherein the flow volume of combustion gas is greater in the booster position than in the open position.