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公开(公告)号：EP3744170A1
公开(公告)日：2020-12-02
申请号：EP19744424.3
申请日：2019-01-18
申请人： Enplas Corporation
发明人： YANAGISAWA, Kazuma , ONO, Koki
摘要： An emitter provided with: a water intake part that communicates with the interior of a tube when the emitter is joined to the tube; a pressure-reducing flow channel part for forming a pressure-reducing flow channel; a flow rate adjustment part for adjusting the flow rate of the irrigation liquid in accordance with the pressure of the irrigation liquid inside the tube; and a discharge part that faces a discharge opening. The flow rate adjustment part has: a base; an accommodation part that accommodates the base; a communication hole that opens to the base and communicates with the discharge part; and a diaphragm part that is flexible and is disposed so as to be separated from the base, the diaphragm part approaching the base when the pressure of the irrigation liquid inside the tube is received.
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公开(公告)号：EP3616502A1
公开(公告)日：2020-03-04
申请号：EP18813640.2
申请日：2018-05-28
申请人： Enplas Corporation
发明人： YANAGISAWA, Kazuma
IPC分类号： A01G25/02
摘要： The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid caused by the temperature of the liquid in the drip irrigation tube. The emitter (120) of the present invention is disposed on an inner wall of a tube (110) including a discharge port (112), for regulating discharge of irrigation liquid from an inside of the tube (110) to an outside of the tube (110) via the discharge port (112). The emitter (120) includes an intake portion; a regulating unit; a discharge portion; and a flow path. The regulating unit includes: a recess; and a film. The film is fixed in a state of covering an inner space of the recess, and a region of the film covering the inner space of the recess is a diaphragm portion. The flow path has a decompression region for decompressing the taken-in liquid, the decompression region has a serpentine shape, and in the decompression region, a fluctuation ratio of a cross-sectional area in a direction perpendicular to an axial direction is within a range of 1 ± 0.1 with reference to a smallest cross-sectional area.
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公开(公告)号：EP3545755A1
公开(公告)日：2019-10-02
申请号：EP17874686.3
申请日：2017-11-02
申请人： Enplas Corporation
发明人： YANAGISAWA, Kazuma
IPC分类号： A01G25/02
摘要： This emitter comprises: an emitter body having a groove, a recess and a through hole on the upper surface thereof; and a film joined to the upper surface. This drip irrigation tube comprises: a tube; a discharge opening that is a hole extending through a wall of the tube; and an emitter joined to an inner wall surface of the tube at a position of the inner wall surface corresponding to the discharge opening.
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公开(公告)号：EP3296559A1
公开(公告)日：2018-03-21
申请号：EP16792707.8
申请日：2016-05-11
申请人： Enplas Corporation
发明人： YANAGISAWA, Kazuma
CPC分类号： F02M61/1853 , B05B1/3421 , F02M61/162 , F02M61/163 , F02M61/18 , F02M61/1806 , F02M61/1846
摘要： PROBLEM TO BE SOLVED: To uniform sizes of fuel particles in spray in an early stage of fuel injection not to generate large droplets that are less likely to evaporate in the spray in the early stage of the fuel injection.
SOLUTION: A nozzle plate for a fuel injection device (3) is disposed opposed to a fuel injection port of a fuel injection device. A nozzle hole (6) through which fuel injected from the fuel injection port passes is formed at the nozzle plate (3). At this nozzle plate for the fuel injection device (3), the nozzle hole (6) has a fuel-flow-in-side opening end (6a) whose shape is a circular shape. The nozzle hole (6) is coupled to the fuel injection port via fuel guide channels (15 and 16). The fuel guide channels (15 and 16) have an opening (20) into the nozzle hole (6), and a pair of opposing channel sidewalls (21 and 22). The opening (20) has a channel width smaller than a hole diameter of the nozzle hole (6). One (21) of the opposing channel sidewalls (21 and 22) is formed to extend in a tangential direction of the nozzle hole (6). The fuel is directly flowed into the nozzle hole (6) to generate a flow of the fuel in a spiral pattern in the nozzle hole (6).摘要翻译： 要解决的问题：为了在燃料喷射的早期阶段使喷雾中的燃料颗粒的尺寸均匀，以在燃料喷射的早期阶段不产生在喷雾中不太可能蒸发的大液滴。 本发明提供一种燃料喷射装置用喷嘴板（3），其与燃料喷射装置的燃料喷射口相对配置。 在喷嘴板（3）上形成有从燃料喷射口喷射的燃料通过的喷嘴孔（6）。 在该燃料喷射装置（3）的喷嘴板上，喷嘴孔（6）具有形状为圆形的燃料流入侧开口端（6a）。 喷嘴孔（6）经由燃料引导通道（15和16）联接到燃料喷射口。 燃料导向通道15和16具有进入喷嘴孔6的开口20以及一对相对的通道侧壁21和22。 开口（20）的通道宽度小于喷嘴孔（6）的孔直径。 相对的通道侧壁（21和22）中的一个（21）形成为沿喷嘴孔（6）的切线方向延伸。 燃料直接流入喷嘴孔（6）以在喷嘴孔（6）中以螺旋形式产生燃料流。
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公开(公告)号：EP3616503A1
公开(公告)日：2020-03-04
申请号：EP18814247.5
申请日：2018-05-28
申请人： Enplas Corporation
IPC分类号： A01G25/02
摘要： The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid in the drip irrigation tube. The emitter (120) of the present invention is an emitter for regulating discharge of irrigation liquid. The emitter (120) includes an intake portion for taking in the liquid in the tube (110); a regulating unit that regulates a discharge amount of the liquid; a discharge portion for discharging the liquid via a discharge port (112) of the tube (110); and a flow path communicating the intake portion and the regulating unit. The regulating unit includes a recess and a film, the film is fixed in a state of covering an inner space of the recess, a region of the film covering the inner space of the recess is a diaphragm portion, the recess has a through hole communicating with the discharge portion and a plurality of slits communicating with the through hole, and an edge portion forming an upper surface-side opening of the through hole, excluding the plurality of slits, is a valve seat portion. When the diaphragm portion of the film comes into contact with the valve seat portion, the film and the slits form communication ports to the through hole, and each slit serves as a flow path to the through hole. The emitter (120) satisfies condition (1):
Condition (1): Assuming a cross-sectional area of the communication port formed by the film and the slit required when the emitter has one slit to be 1, a cross-sectional area of a communication port to the through hole formed by the film and each slit is less than 1.-
公开(公告)号：EP3563672A1
公开(公告)日：2019-11-06
申请号：EP18745274.3
申请日：2018-01-30
申请人： Enplas Corporation
IPC分类号： A01G25/02
摘要： The present invention aims to provide an emitter and a drip irrigation tube that can suppress the variations in the discharge amount of the liquid caused by pressure fluctuations of the liquid in the drip irrigation tube. The emitter of the present invention is to be disposed on an inner wall of a tube including a discharge port, for regulating discharge of irrigation liquid from an inside of the tube to an outside of the tube via the discharge port. The emitter includes an intake portion; a regulating unit; a discharge portion; and a flow path. The regulating unit includes a recess; and a film, the film is fixed in a state of covering an inner space of the recess, a region of the film covering the inner space of the recess is a diaphragm portion, the recess has a through hole inside thereof on its bottom surface, the through hole of the recess communicates with the discharge portion, the recess has a slit communicating with the through hole on its bottom surface, and an edge portion forming an upper surface-side opening of the through hole on the bottom surface of the recess, except for the slit, is a valve seat portion for the film. In a state where the emitter is disposed in the tube, when no liquid is present in the tube, the diaphragm portion of the film is not in contact with the valve seat portion, and when the liquid is present in the tube, the diaphragm portion of the film can be in contact with the valve seat portion in accordance with a pressure of the liquid. The diaphragm portion of the film comes into contact with an entire valve seat portion with a time difference.
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