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1. (WO2017057033) EMITTER AND DRIP IRRIGATION TUBE

Pub. No.:    WO/2017/057033    International Application No.:    PCT/JP2016/077357
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Sat Sep 17 01:59:59 CEST 2016
IPC: A01G 25/02
Applicants: ENPLAS CORPORATION
株式会社エンプラス
Inventors: MORIKOSHI, Daisuke
守越 大輔
Title: EMITTER AND DRIP IRRIGATION TUBE
Abstract:
An emitter having a water intake part, a discharge part, a channel, and a pressure reduction channel. The pressure reduction channel reduces the pressure of an irrigation liquid taken in through the water intake part. The pressure reduction channel includes a groove and a plurality of projections. The plurality of projections alternatingly project from both sides on the inside surface of the groove in the direction of flow of the irrigation liquid inside the pressure reduction channel. The plurality of projections include first and second projections that are adjacent to one another in the groove depth direction. The first projections are positioned on one side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as to cross the center line of the groove. The second projections are positioned on the other side in the depth direction of the groove, and when seen from a planar view, the tip ends thereof project from the inside surface of the groove so as not to cross the center line of the groove.