Mixing Device Step Portion Flow Path for Puncture Repair
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Solution Overview
Problem
Existing puncture repair kits require longer times for repair due to sequential injection of puncture repair liquid and compressed air, necessitating an improvement in efficiency.
Innovation Solution
A mixing device with a mixing chamber, first inlet for compressed air, and second inlet for puncture repair liquid, featuring a flow path with a step portion that changes cross-sectional area, optimizing the supply and mixing of the two components to reduce the risk of liquid remaining and enhance repair efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If puncture repair liquid and compressed air are sequentially injected, then the injection process is simple, but the repair time becomes longer
Solution Approach 1:
The patent merges the sequential injection of puncture repair liquid and compressed air into a simultaneous mixed injection process. The mixing device combines both substances in a mixing chamber before injecting them together through a single nozzle, eliminating the time required for sequential operations and improving repair efficiency
2Productivity
If the flow path cross-sectional area is reduced, then the mixing efficiency improves, but the risk of liquid remaining in the flow path increases
Solution Approach 1:
The patent applies local quality by creating different flow path characteristics in different regions. The flow path includes a narrow section for efficient mixing and a wider section with positive pressure to ensure complete liquid discharge, optimizing both mixing efficiency and reliability without compromise
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 device efficiently mixes and supplies the puncture repair liquid and compressed air, reducing the time required for repair and minimizing the risk of liquid remaining, thus improving the overall efficiency of the puncture repair process.
Implementation Method 1
the flow path includes a step portion which is between the first portion and the second portion and discontinuously changes a flow path cross-sectional area
Data Source
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AI summary
A mixing device 4 includes a mixing chamber 8 having a space for mixing a puncture repair liquid R and compressed air A, a first inlet 9 for supplying the compressed air A to the mixing chamber 8, a second inlet 10 for supplying the puncture repair liquid R to the mixing chamber 8, and an outlet 11 for discharging a mixture of the puncture repair liquid R and the compressed air A from the mixing chamber 8. The second inlet 10 includes a flow path 12 including a first portion 12a which is open at the mixing chamber 8 and a second portion 12b upstream of the first portion 12a. The first portion 12a has a first flow path cross-sectional area S1. The second portion 12b has a second flow path cross-sectional area S2 larger than the first flow path cross-sectional area S1. The flow path 12 includes a step portion 12c which is between the first portion 12a and the second portion 12b and discontinuously changes a flow path cross-sectional area thereof.