Premixing Flow Path Adjustment for Multi-Fuel Gas Switching
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Solution Overview
Problem
Existing premixing devices require separate parts and inventory management for different types of fuel gases, such as natural gas and LP gas, leading to increased costs and complexity due to the need for part replacement or addition when switching between fuel types.
Innovation Solution
A premixing device with a fuel gas flow path adjusting member that can change its attachment mode to accommodate different fuel gases, allowing for adjustable flow path resistance without replacing parts, by selectively closing fuel gas supply ports and changing the position or area of the fuel gas flow path adjusting member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate parts are prepared for different fuel gas types, then the premixing device can accommodate various fuel gases, but the device complexity and inventory management become more complicated
Solution Approach 1:
The patent implements a universal premixing device that can handle multiple fuel gas types (natural gas, LP gas, etc.) through a single standardized structure. The fuel gas flow path forming member includes a standardized fuel gas outlet and flow path configuration that can accommodate different fuel gases without requiring separate parts for each fuel type, thereby reducing parts inventory and management complexity while maintaining adaptability to various fuel gases.
Solution Approach 2:
The patent adjusts operational parameters (such as flow path resistance, outlet diameter, or flow rate settings) of the standardized fuel gas flow path to optimize performance for different fuel gas types. By changing parameters rather than physical parts, the device maintains versatility across fuel types while avoiding the need for multiple part inventories.
2Adaptability or versatility
If part replacement is performed when switching fuel gas types, then the premixing device can be adapted to different fuel gases, but the costs and operational time increase
Solution Approach 1:
The standardized fuel gas flow path forming member is designed to work with multiple fuel gas types without requiring physical part replacement. The universal design allows operators to switch between fuel gases (natural gas, LP gas, etc.) simply by adjusting operational parameters or flow path settings, eliminating the time-consuming process of disassembling and replacing parts while maintaining full adaptability to different fuel types.
3Quantity of substance
If the fuel gas outlet diameter is increased, then more fuel gas can flow out, but the flow path resistance increases
Solution Approach 1:
The patent optimizes the fuel gas outlet diameter and flow path dimensions as fixed parameters of the standardized structure to achieve an optimal balance between fuel gas flow quantity and flow path resistance. The outlet diameter is carefully selected to provide sufficient flow capacity for different fuel gas types while maintaining acceptable pressure drop and flow resistance, eliminating the need for complex resistance management mechanisms.
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 efficient handling of multiple fuel gas types without the need for part replacement or additional inventory, reducing costs and simplifying management by adjusting the flow path resistance to match the specific fuel gas characteristics, thus improving operational flexibility and reducing inventory needs.
Implementation Method 1
air flows through the premixing flow path and a negative pressure is generated, fuel gas flows out from the fuel gas outlet to the premixing flow path and is mixed with air due to an action of the negative pressure
Implementation Method 2
fuel gas flows out from the fuel gas outlet to the premixing flow path and is mixed with air due to an action of the negative pressure
Data Source
AI summary
A premixing flow path forming member of a premixing device includes a member whose attachment mode can be changed, and flow path resistance of a fuel gas flow path can be changed when the attachment mode of the member is changed.