Gas Valve Switching Assembly for Natural Gas and LPG Flow Matching
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Solution Overview
Problem
Conventional gas switches for stoves are inadequate as they require separate designs for natural gas and liquefied petroleum gas, leading to incomplete combustion or weak flames when the wrong type of gas is used, resulting in unnecessary inventory pressure for suppliers.
Innovation Solution
A switching device for a gas valve that includes a valve assembly, rotating shaft, supporting base, and rod, allowing the area of the inlet hole to be adjusted by the plug member to accommodate either natural gas or liquefied petroleum gas by changing the rotated distance of the plug member, thereby controlling gas flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a gas switch for natural gas is connected to use liquefied petroleum gas, then the gas flow would be too large, but this causes incomplete combustion
Solution Approach 1:
The plug member is made rotatable within the chamber to dynamically adjust the opening area of the inlet hole. By rotating the plug member to different positions, the gas flow area can be precisely controlled to match the requirements of different gas types, transforming a static gas switch into a dynamic one that can adapt its flow characteristics.
Solution Approach 2:
The invention changes the physical parameter of the inlet hole opening area by rotating the plug member. This parameter change allows the same gas switch to accommodate different gas flow requirements - a larger opening area for natural gas and a smaller opening area for liquefied petroleum gas - thereby resolving the contradiction between gas flow quantity and combustion completeness.
2Quantity of substance
If a gas switch for liquefied petroleum gas is connected to use natural gas, then the flames would be too weak
Solution Approach 1:
The rotatable plug member enables dynamic adjustment of the gas flow area. When natural gas is used, the plug member can be rotated to a position that provides a larger opening area, allowing sufficient gas flow to maintain strong flames. This dynamic adaptability prevents the flame weakness problem that occurs with fixed LPG-designed switches.
Solution Approach 2:
By changing the opening area parameter of the inlet hole through plug member rotation, the system can optimize gas flow for different fuel types. For natural gas, a larger opening area parameter is selected to ensure adequate flame strength, resolving the contradiction between gas flow quantity and flame performance.
3Adaptability or versatility
If stove suppliers prepare two types of stoves to meet different requirements, then different gas types can be accommodated, but this causes unnecessary inventory pressure
Solution Approach 1:
The gas switch is designed with multi-functionality by incorporating a rotatable plug member that can adjust to different gas types. This universal design allows a single switch model to serve both natural gas and liquefied petroleum gas applications, eliminating the need for suppliers to maintain separate inventory for different gas types while maintaining full adaptability.
Solution Approach 2:
The dynamic rotatable plug member enables a single static device to perform multiple functions by changing its internal configuration. This transforms the gas switch from a type-specific component to a universal component that can adapt to different gas requirements, significantly reducing inventory complexity for suppliers.
4Ease of operation
If the rod enters the space, then the rotated distance of the plug member is restricted as a first distance, but this limits the gas flow area adjustment range
Solution Approach 1:
The rotation range of the plug member is segmented into different zones by the rod's position. When the rod enters the space, it restricts rotation to a first distance suitable for one gas type. When the rod leaves the space, rotation is permitted to a second distance for another gas type. This segmentation allows controlled adaptability rather than unrestricted rotation.
Solution Approach 2:
The system dynamically adjusts the plug member's rotation range based on the rod's position. The rod acts as a dynamic constraint that modifies the operational parameters of the plug member. This dynamic range adjustment enables the same mechanism to serve different gas types with different flow requirements, balancing operational control with adaptability.
Data Source
AI summary
A switching device includes a rod, a rotating shaft, and a valve assembly including a cover and a plug member. The cover engaged with the valve body has a first block section, a second block section, a space, and a threaded hole communicates with the space. The plug member is rotatably provided in a chamber of the cover, changing an area of an opening of an inlet hole. The rotating shaft has a projection is adapted to drive the plug member to rotate. A rod body of the rod has a threaded section engaged with the threaded hole. When the projection abuts against the first block section, the plug member seals the inlet hole. When the projection abuts against the rod, the plug member changes the area to a first area. When the projection abuts against the second block section, the plug member changes the area to a second area.