Cylindrical In-Line Emitter with Labyrinth Flow Control
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Solution Overview
Problem
Fluid distribution emitters in mining and irrigation systems are prone to plugging due to particulates, scale buildup, and pressure fluctuations, leading to uneven fluid distribution and increased costs with the use of smaller, less expensive emitters to maintain flow rates, especially at lower pressures.
Innovation Solution
The development of a fluid distribution emitter with a short, hollow cylindrical body featuring a labyrinth flow-rate control path and multiple fluid distribution orifices positioned circumferentially within the tubing to reduce plugging risks, including a pressure compensating valve option, which helps maintain consistent flow rates and prevent blockages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If emitters are positioned on one side of the tubing (flat emitter design), then the emitter size can be reduced and cost decreased, but the emitter becomes susceptible to plugging from sediment settling into grids
Solution Approach 1:
The emitter body is divided into multiple independent flow paths (first flow path, second flow path, third flow path) that are segmented by partition walls. This segmentation allows fluid to flow through multiple separate channels, reducing the likelihood that all paths will be blocked simultaneously by sediment or particulates.
Solution Approach 2:
The invention transitions from a two-dimensional flat emitter design to a three-dimensional cylindrical emitter that extends into the tubing. The cylindrical body with multiple circumferential orifices creates additional spatial dimensions for fluid distribution, allowing flow paths to extend in multiple directions rather than being confined to a single plane.
2Stability of the object's composition
If emitter spacing is reduced to distribute fluid more evenly, then fluid distribution uniformity improves, but the cost of emitting operations increases
Solution Approach 1:
Multiple fluid distribution orifices are positioned at different locations around the circumference of the cylindrical emitter body. This creates local fluid distribution points at various positions, ensuring more uniform fluid delivery across the target area without requiring reduced spacing between emitters.
3Quantity of substance
If conventional emitters are used at lower pressures, then flow rate decreases as desired, but plugging susceptibility increases
Solution Approach 1:
The labyrinth flow control path is designed to create preliminary turbulence and mixing of the fluid before it reaches the distribution orifices. This preliminary action prevents particulates from settling into the flow paths and maintains fluid velocity that reduces plugging susceptibility even at lower operating pressures.
Solution Approach 2:
The labyrinth flow control section acts as an intermediary between the fluid source and the distribution orifices. It modifies the fluid flow characteristics through controlled turbulence and direction changes, preventing direct contact between settling particulates and the orifices while maintaining the desired flow rate reduction.
4Reliability
If filters are added to remove contaminants, then plugging frequency decreases, but system cost increases
Solution Approach 1:
The emitter design provides self-cleaning capabilities through the labyrinth flow paths that create turbulence and prevent sediment accumulation. The multi-path configuration ensures that if one path becomes partially blocked, fluid can still flow through alternative paths, making the system self-resilient without requiring external filtration infrastructure.
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 solution effectively reduces the likelihood of plugging and maintains consistent fluid distribution across a wide range of pressures, enhancing the reliability and cost-effectiveness of fluid distribution systems by using a labyrinth flow control section and multiple orifices to manage fluid flow within the tubing.
Implementation Method 1
a labyrinth flow control section (22) having a substantially circumferentially-extending labyrinth flow-rate control path (23)
Implementation Method 2
in which fluid pressure is reduced to the desired rate of distribution from the tube
Implementation Method 3
including a pressure compensating valve option, which helps maintain consistent flow rates and prevent blockages
Data Source
AI summary
A fluid flow emitter is provided, which is to be mounted within a fluid distribution tube to control the rate at which fluid is distributed from the tube. The emitter may include a cylindrical body having a pair of raised radially-extending annular portions extending circumferentially around the emitter. These raised portions define a fluid flow path. The body may define a multiplicity of apertures making up an aperture region disposed between the radially-extending annular portions. A flow control section is also provided which includes an upstream end and a downstream end. A fluid distribution region is also provided, into which the flow control section discharges. The fluid distribution region is in fluid interconnection with at least one orifice defined in the fluid distribution tube.