Nozzle Buffer Chamber Disk Plate Flow Rectification
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Solution Overview
Problem
Conventional nozzles that redirect high-pressure fluid jets result in turbulent flow and dispersed jet streams, leading to reduced processing ability and increased wear on ejection conduits when abrasives are mixed into the jet stream, causing surface disorder during processing.
Innovation Solution
A nozzle design featuring a buffer chamber and disk plate configuration that redirects fluid flow to converge at the center, minimizing turbulence and maintaining high jet stream convergence, even when abrasives are mixed, by using a compact inflow channel structure and supporting members to prevent vortex generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a redirector (elbow) is used to change the flow direction of high-pressure fluid, then the fluid can be redirected into a different direction, but the flow becomes turbulent and the jet stream disperses
Solution Approach 1:
The buffer chamber is divided into multiple functional regions: a first region for receiving the redirected fluid flow, a second region for generating a rectified flow, and a third region for forming the jet stream. This segmentation allows different flow control functions to be performed in separate zones, reducing turbulence and improving flow stability.
Solution Approach 2:
The buffer chamber acts as an intermediary component between the redirector and the jet stream formation. It provides a transition zone where the redirected flow can be stabilized and rectified before being converted into a coherent jet stream, preventing direct transmission of turbulence.
2Productivity
If an abrasive medium is mixed into a dispersed jet stream, then the jet stream can perform cutting or cleaning functions, but the ejection conduit wears intensively and the processed surface becomes disordered
Solution Approach 1:
The jet stream is formed and stabilized in the buffer chamber before the abrasive medium is introduced. This preliminary formation of a coherent, high-velocity jet stream ensures that abrasives are accelerated uniformly and ejected in a concentrated manner, preventing scattered impact that would cause conduit wear and surface disorder.
3Volume of moving object
If a compact inflow channel structure is used, then the nozzle size is reduced, but achieving high rectifying effect becomes more difficult
Solution Approach 1:
The buffer chamber utilizes three-dimensional space efficiently by creating vertical stratification of flow regions. The first region receives flow from above, the second region generates rectified flow in the middle, and the third region forms the jet stream at the bottom. This vertical arrangement achieves effective flow rectification in a compact horizontal footprint.
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 nozzle achieves a high-convergence, low-turbulence jet stream that effectively mixes abrasives with the liquid, reducing wear on ejection conduits and maintaining processing ability, while allowing for a compact and efficient nozzle design suitable for high-pressure fluids.
Implementation Method 1
The liquid introduced from the inflow channel spreads throughout the other side of the disk plate (side opposite to the constrictor part) within the buffer chamber, and flows into the one side (constrictor part side) of the disk plate within the buffer chamber from surroundings of the disk plate. The liquid flown into a disk-plate-shaped space formed on the constrictor part side of the disk plate flows from the whole circumference of the disk-plate-shaped space to towards a center part through which the axis line passes substantially equally.
Implementation Method 2
The flow of the liquid gathers into the center part of the disk-plate-shaped space, and suddenly contracts in flow in the axis line direction towards the constrictor part and rotates the direction of the flow. By the liquid ejecting from the disk-plate-shaped space upon passing through the constrictor part, a jet stream with small turbulence is obtainable.
Implementation Method 3
since the flow channel is configured of the buffer chamber and the disk plate supported inside the buffer chamber, the inflow channel is extremely compact, while achieving a high rectifying effect
Data Source
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AI summary
A nozzle ejecting liquid and a nozzle device ejecting a liquid upon mixing an abrasive into a liquid jet stream, obtains a converged jet stream. A nozzle 10 includes: a main body 11; a buffer chamber 29 provided in the main body 11, whose central axis is an axis line 28 being the central line of a jet stream J of the liquid; a constrictor part 35 for ejecting the liquid, provided in a plane 291 of the buffer chamber 29 on a front side of the buffer chamber 29 and whose central axis is the axis line 28; a disk plate 30 provided inside the buffer chamber 29, facing the plane 291 on the front side of the buffer chamber 29 and whose central axis is the axis line 28; a supporting member 31 supporting the disk plate 30 within the buffer chamber 29; a supply opening 121 provided in the main body 11 for supplying the liquid; and an inflow channel 12 provided along a direction different from an extending direction of the axis line 28, opened on a rear side of the disk plate 30 and the buffer chamber 29 and communicating with the supply opening 121.