Drip Irrigation Emitter With Deformation Suppression Part
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Solution Overview
Problem
Drip irrigation emitters formed with low hardness resin materials face challenges in controlling flow rate due to deformation under high liquid pressure, leading to inappropriate liquid discharge.
Innovation Solution
The emitter design includes a base seat part housed in a housing part with a diaphragm that deforms under pressure, and a deformation suppression part to prevent base seat deformation, ensuring consistent flow rate adjustment regardless of pressure levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If low hardness resin material is used to reduce manufacturing cost, then manufacturing cost is reduced, but the base seat deforms under high liquid pressure causing inappropriate flow rate control
Solution Approach 1:
The emitter is divided into multiple functional parts: the diaphragm part for pressure sensing, the base seat part for flow control, and the deformation suppression part for structural support. This segmentation allows each part to be optimized independently - the base seat can be made from low hardness resin for cost reduction while the deformation suppression part provides the necessary structural integrity to prevent deformation under pressure.
Solution Approach 2:
The deformation suppression part acts as an intermediary between the diaphragm part and the external environment. It receives and transmits liquid pressure while suppressing deformation of the base seat, thereby mediating between the need for flexible pressure response and the need for stable flow control geometry.
2Ease of manufacture
If low hardness resin material is used, then manufacturing cost is reduced, but reliability of flow rate adjustment function deteriorates under high pressure
Solution Approach 1:
By segmenting the emitter into functional parts with different roles, the base seat can be made from cost-effective low hardness resin while the deformation suppression part provides reliable structural support. This ensures the flow rate adjustment function remains reliable under high pressure conditions.
Solution Approach 2:
The emitter employs a composite structure combining low hardness resin material with deformation suppression features. This composite approach allows the base seat to benefit from the cost and flexibility advantages of low hardness resin while the integrated deformation suppression part compensates for the reduced structural integrity, maintaining reliability under varying pressure conditions.
3Adaptability or versatility
If the diaphragm deforms under high liquid pressure, then pressure adjustment is achieved, but the base seat deforms causing loss of flow rate control
Solution Approach 1:
The emitter is segmented into a diaphragm part that is intended to deform for pressure adaptation and a base seat part that must maintain geometric stability. The deformation suppression part is added specifically to prevent the base seat from deforming, allowing the diaphragm to freely adapt to pressure changes without compromising base seat geometry.
Solution Approach 2:
Different parts of the emitter are given different mechanical properties: the diaphragm part is designed to be flexible for pressure sensing, while the base seat and deformation suppression part are designed to be rigid enough to maintain geometric stability. This local differentiation of mechanical properties allows simultaneous pressure adaptation and geometric stability.
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 configuration allows for effective flow rate adjustment and reliable liquid discharge, even when made from low hardness resin materials, maintaining performance under varying pressure conditions.
Implementation Method 1
a diaphragm part (153) having flexibility and configured to deform toward the base seat part (122) when receiving a pressure of the irrigation liquid in the tube
Implementation Method 2
a pressure reducing channel groove (133) communicated with the intake part (131) and configured to form a pressure reducing channel (143), the pressure reducing channel being configured to carry the irrigation liquid while depressurizing the irrigation liquid
Data Source
AI summary
The present invention relates to an emitter that can properly exhibit a flow rate adjustment function even when produced by molding a resin material having low hardness. The emitter has an emitter body and a base part stored in the emitter body. The emitter body comprises a water intake part, a reduced-pressure flow path groove, a storage part, and a diaphragm part. The base part has a base, a communication hole, and a deformation prevention part that is disposed protruding from the reverse surface to the surface of the base which the diaphragm part deformed by the pressure of a drip irrigation liquid contacts, and when the diaphragm part contacts the base by the pressure of the drip irrigation liquid, contacts the tube to prevent the base from being deformed by the pressure of the drip irrigation liquid.