Ultra-fine spray-jetting nozzle
First Claim
1. An ultra-fine spray-jetting nozzle comprising a liquid passage and a gas passage that is disposed on a peripheral side of said liquid passage through a partitioning wall and communicates with a jetting port, wherein an outer surface of said partitioning wall at a jetting port side thereof is formed sectionally polygonal, long circular or elliptic;
- a peripheral surface of said gas passage is formed sectionally circular;
said outer surface of said partitioning wall having said configuration is brought into contact with said sectionally circular peripheral surface of said gas passage at a plurality of positions to circumferentially divide said gas passage at said jetting side into a plurality of gas passages;
or said outer surface of said partitioning wall is formed sectionally circular;
said peripheral surface of said gas passage at said jetting port side is formed sectionally polygonal, long circular or elliptic;
said outer surface of said partitioning wall is brought into contact with said peripheral surface of said gas passage having said configuration at a plurality of positions to circumferentially divide said gas passage at said jetting side into a plurality of gas passages; and
a gas jetted from jetting ports of a plurality of said separate gas passages is mixed with a periphery of a liquid jetted from said liquid passage to generate spray.
1 Assignment
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Accused Products
Abstract
An ultra-fine spray-jetting nozzle includes a liquid passage (37) and a gas passage (41) that is disposed on a peripheral side of the liquid passage (37) through a partitioning wall and communicates with a jetting port (A). An outer surface of the partitioning wall at a jetting port side thereof is formed sectionally polygonal, long circular or elliptic. A peripheral surface of the gas passage (41) is formed sectionally circular. The outer surface of the partitioning wall having the configuration is brought into contact with the sectionally circular peripheral surface of the gas passage (41) at a plurality of positions to circumferentially divide the gas passage (41) at the jetting side into a plurality of gas passages. A gas jetted from jetting ports (A) of a plurality of the separate gas passages is mixed with a periphery of a liquid jetted from the liquid passage (37) to generate spray.
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Citations
14 Claims
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1. An ultra-fine spray-jetting nozzle comprising a liquid passage and a gas passage that is disposed on a peripheral side of said liquid passage through a partitioning wall and communicates with a jetting port,
wherein an outer surface of said partitioning wall at a jetting port side thereof is formed sectionally polygonal, long circular or elliptic; - a peripheral surface of said gas passage is formed sectionally circular;
said outer surface of said partitioning wall having said configuration is brought into contact with said sectionally circular peripheral surface of said gas passage at a plurality of positions to circumferentially divide said gas passage at said jetting side into a plurality of gas passages;
orsaid outer surface of said partitioning wall is formed sectionally circular;
said peripheral surface of said gas passage at said jetting port side is formed sectionally polygonal, long circular or elliptic;
said outer surface of said partitioning wall is brought into contact with said peripheral surface of said gas passage having said configuration at a plurality of positions to circumferentially divide said gas passage at said jetting side into a plurality of gas passages; and
a gas jetted from jetting ports of a plurality of said separate gas passages is mixed with a periphery of a liquid jetted from said liquid passage to generate spray. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13)
- a peripheral surface of said gas passage is formed sectionally circular;
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11. An ultra-fine spray-jetting nozzle in which a gas passage having a resin portion forming a smooth surface on at least an inner peripheral surface thereof is provided on a peripheral side of a liquid passage;
- a jetting port of said liquid passage is projected outward by 0.3 to 0.8 mm from a jetting port of said gas passage;
a gas is jetted from said jetting port of said gas passages to a periphery of a liquid jetted from said liquid passage to mix said liquid and said gas with each other externally;
jetting portions each including said liquid passage and said gas passage are disposed in confrontation with each other;
an angle formed between axes of said opposed jetting portions is set to 70°
to 160°
;
a distance from each of said jetting portions to a point of collision of fluids is set to 3 to 15 mm; and
mixture fluids of said gas and said liquid which have been generated externally at each of said jetting portions collide and mix with each other to set an average particle diameter of droplets to a range of 1 μ
m to 10 μ
m and a maximum particle diameter to not more than 50 μ
m; and
a ratio of a volume of said gas to be supplied to said gas passage to a volume of said liquid to be supplied to said liquid passage is set to not less than 800 and less than 1000. - View Dependent Claims (12, 14)
- a jetting port of said liquid passage is projected outward by 0.3 to 0.8 mm from a jetting port of said gas passage;
Specification