Sprayer Nozzle Coil Gas Flow Prevents Clogging
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional sprayers used for mixing and spraying thrombin and fibrinogen solutions suffer from clogging issues due to residual pressures causing liquids to coagulate and mix at the nozzle, leading to inhibited ejection of liquids and gas, making repeated spraying impossible.
Innovation Solution
A sprayer design featuring a nozzle with an external tube and internal tubes, where a coil or coil-like member allows gas to flow from the external tube into the internal tubes, preventing liquid clogging by blowing off residual liquids when the ejection stops, and omitting the need for a separate gas ejection port.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional nozzle with separate liquid ejection ports and gas ejection port is used, then the sprayer can deliver liquids and gas separately, but residual pressures cause liquids to coagulate and clog the ejection ports, preventing repeated spraying
Solution Approach 1:
The patent merges the gas ejection function with the liquid ejection ports by allowing gas to flow through the internal tubes along with liquids. The single distal end opening serves both as liquid ejection ports and gas ejection port, eliminating separate gas ejection ports and ensuring gas flows through the same path as liquids to prevent clogging
Solution Approach 2:
Gas acts as an intermediary substance that flows through the internal tubes alongside liquids, preventing liquid coagulation and clogging. The gas flow clears residual liquids from the tubes and ports, maintaining patentability for repeated spraying operations
2Ease of operation
If separate gas ejection ports are provided in the nozzle, then gas can be ejected independently, but the nozzle configuration becomes complex with multiple tubes and ports
Solution Approach 1:
The patent combines gas ejection with liquid ejection by allowing gas to flow through the same internal tubes and distal end openings as liquids. This merging eliminates separate gas ejection ports and simplifies the nozzle structure while maintaining the ability to eject gas effectively
Solution Approach 2:
The internal tubes and distal end openings serve dual functions: delivering liquids during spraying and delivering gas for both propulsion and clogging prevention. This multi-functionality reduces the number of components needed in the nozzle system
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
This design prevents clogging by ensuring that the gas can flow into the internal tubes to clear the liquid, allowing for reliable and repeated spraying without liquid mixture accumulation at the nozzle, enhancing the sprayer's operational efficiency.
Implementation Method 1
when the ejection of the liquid is stopped, the residual pressure in the external tube causes the gas to flow into the internal tube through the coil or coil-like member
Implementation Method 2
A coil or coil-like member is provided in the external tube, allowing the gas to flow from the outside of the coil or coil-like member into the inside of the coil or coil-like member
Data Source
AI summary
A sprayer capable of avoiding clogging caused in the nozzle includes liquid supplies for supplying a liquid, and a nozzle connected to the liquid supply. The nozzle includes a first internal tube and a second internal tube through which a first liquid and a second liquid supplied from the liquid supply pass, respectively, and an external tube into which respective internal tubes are inserted, and which allows a gas to pass through the gap between it and each internal tube, for ejecting the first liquid and the second liquid with the gas. At least a part of the longitudinal direction of each internal tube is formed of a coil including a helically wound wire rod, so that the gas can flow into the inside of the coil from between the adjacent portions of the wire rod of the coil.