Unitary Elastomeric Drip Emitter Outlet for Consistent Flow
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Solution Overview
Problem
Current drip irrigation systems face challenges in maintaining a constant water output, are prone to clogging, and require complex assembly processes, leading to inefficiencies and increased costs due to misaligned or missing parts, and lack of tolerance in emitter outlet positioning.
Innovation Solution
The development of a drip emitter with a unitary elastomeric body that includes a pressure-reducing flow channel and a pressure compensating mechanism, featuring a U-shaped passage and moveable baffle structures to regulate fluid flow, along with a design that allows for easier assembly and reduced parts, ensuring consistent performance and tolerance in outlet positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a complex multi-part emitter assembly is used, then manufacturing precision can be improved through specialized components, but device complexity increases and assembly difficulty increases
Solution Approach 1:
The patent merges multiple separate emitter components into a single unitary emitter body made of elastomeric material. This integration eliminates the need for complex assembly operations while maintaining precise outlet positioning through the molded structure itself, directly resolving the contradiction between manufacturing precision and device complexity
Solution Approach 2:
The unitary emitter body performs multiple functions simultaneously: it provides pressure reduction through internal flow channels, compensates for pressure variations through elastomeric deformation, defines the outlet geometry for precise positioning, and serves as the structural housing. This multi-functionality eliminates the need for separate specialized components, reducing assembly complexity while maintaining precision
2Manufacturing precision
If tight tolerances are imposed on outlet opening positioning, then manufacturing precision is improved, but productivity decreases due to increased production time and cost
Solution Approach 1:
By integrating the outlet opening directly into the unitary emitter body through molding, the patent eliminates the need for separate outlet opening formation operations. The outlet geometry is built-in during primary manufacturing, achieving precise positioning without requiring additional time-consuming steps that would reduce productivity
Solution Approach 2:
The outlet opening geometry is predetermined and built into the emitter body during the molding process rather than being created later through separate operations. This preliminary action ensures precise positioning is achieved during the most efficient part of manufacturing, maintaining high productivity while meeting precision requirements
3Productivity
If emitter outlet velocity is increased, then fluid flow rate is improved, but reliability decreases due to squirting and inconsistent fluid pattern
Solution Approach 1:
The patent changes the physical parameters of the outlet by using the elastomeric material's inherent properties to modulate flow. The material's elasticity and viscosity characteristics automatically regulate the fluid exit velocity and pattern, ensuring consistent reliable delivery while maintaining adequate flow rates, thus resolving the contradiction between productivity and reliability
4Ease of repair
If multiple separate emitter components are used, then ease of repair is improved through modular replacement, but device complexity increases
Solution Approach 1:
The patent combines all emitter functions into a single unitary body that can be replaced as one component. While this reduces the number of parts, the modular design allows the entire emitter assembly to be easily removed and replaced without affecting other system components, maintaining ease of repair while reducing overall device complexity
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 solution ensures a consistent and efficient water distribution with reduced clogging, improved flushing capabilities, and cost savings through simplified manufacturing and reduced maintenance, while maintaining performance across varying pressure conditions.
Implementation Method 1
the floor of the flow channel is deflectable and deflects up into the flow channel in response to an increase in pressure to reduce the cross-section of the flow channel
Implementation Method 2
a pressure reducing flow channel extending between the inlet and the outlet area for reducing the pressure and flow of fluid received at the inlet and discharged through the outlet area
Data Source
AI summary
Emitter outlets are disclosed which include a bath within which fluid collects until dripping out an outlet formed in the drip line, the bath including a floor having a floor thickness, the floor thickness comprising a first thickness of a bottom wall of the outlet and a second thickness of a rib that projects axially from an outer surface of the bottom wall of the outlet. The rib reinforces the floor so that water pressure in the drip line does not deflect the floor and result in an inconsistent drip pattern. The emitter outlets may also include a first portion upstream of the bath having a plurality of turns for reducing a velocity of fluid traveling through the outlet and may be made of an elastomeric material. In addition, emitters, drip lines and various methods relating to such an emitter outlet configuration are also disclosed.