JP7104442B1 - Spray nozzle - Google Patents

Spray nozzle Download PDF

Info

Publication number
JP7104442B1
JP7104442B1 JP2021112047A JP2021112047A JP7104442B1 JP 7104442 B1 JP7104442 B1 JP 7104442B1 JP 2021112047 A JP2021112047 A JP 2021112047A JP 2021112047 A JP2021112047 A JP 2021112047A JP 7104442 B1 JP7104442 B1 JP 7104442B1
Authority
JP
Japan
Prior art keywords
nozzle
nozzle body
liquid
pair
spouts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2021112047A
Other languages
Japanese (ja)
Other versions
JP2022135867A (en
Inventor
良成 今川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaho Industry Co Ltd
Original Assignee
Yamaho Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaho Industry Co Ltd filed Critical Yamaho Industry Co Ltd
Priority to TW111106184A priority Critical patent/TW202235164A/en
Priority to PCT/JP2022/007533 priority patent/WO2022186031A1/en
Priority to KR1020237032966A priority patent/KR20230150853A/en
Application granted granted Critical
Publication of JP7104442B1 publication Critical patent/JP7104442B1/en
Publication of JP2022135867A publication Critical patent/JP2022135867A/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/0003—Atomisers or mist blowers
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
    • A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
    • A01M7/005—Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields
    • A01M7/006—Mounting of the nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
    • B05B1/10—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape in the form of a fine jet, e.g. for use in wind-screen washers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/26—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with means for mechanically breaking-up or deflecting the jet after discharge, e.g. with fixed deflectors; Breaking-up the discharged liquid or other fluent material by impinging jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Insects & Arthropods (AREA)
  • Pest Control & Pesticides (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)

Abstract

【課題】一対の噴出口から噴出した液体を衝突させて噴霧する方式の噴霧ノズルにおいて、衝突した液体の霧化によって生じる霧粒の到達性を向上させる。【解決手段】ノズル本体１の一対の噴出口１５を、両噴出口１５を結ぶ方向と直交する方向で互いに平行に延びる長孔とすることにより、ノズル本体１の後面側から供給されて液体通路１４を通り噴出口１５から噴出された液体が、噴出口１５と同じ方向に拡がる扁平な噴流となり、従来のような円形の噴出口から噴出される噴流よりも確実に所定の位置で衝突して霧化するとともに、衝突後の液体が形成する扇形の噴霧パターンの両側部に生じる粒径の大きい霧粒に、小さい粒径の霧粒が引き寄せられるようになって、霧粒が全体として従来よりも遠い場所まで到達するようにした。【選択図】図３An object of the present invention is to improve reachability of mist particles generated by atomization of colliding liquid in a spray nozzle of a type in which liquid jetted from a pair of jet nozzles collides and is sprayed. A pair of ejection openings (15) of a nozzle body (1) are elongated holes extending parallel to each other in a direction orthogonal to a direction connecting both ejection openings (15), whereby a liquid is supplied from the rear surface side of the nozzle body (1) to flow through the passage. The liquid ejected from the ejection port 15 through the passage 14 forms a flat jet that expands in the same direction as the ejection port 15, and collides at a predetermined position more reliably than the conventional jet that is ejected from the circular ejection port. Along with atomization, small-sized fog droplets are attracted to the large-sized fog droplets generated on both sides of the fan-shaped spray pattern formed by the liquid after collision, and the fog droplets as a whole are larger than before. made it possible to reach even distant places. [Selection drawing] Fig. 3

Description

本発明は、農薬や水等の液体の散布に用いられる噴霧ノズルに関する。 The present invention relates to a spray nozzle used for spraying a liquid such as pesticide or water.

農薬等の液体を散布するための噴霧ノズルとしては、従来、後面側が開口し、閉じられた前面の中央部に噴出口を有する円筒状のノズル本体と、ノズル本体の内部に収容され、外周に複数の傾斜溝を有する中子とを備え、ノズル本体の後面側から供給された液体が、中子の傾斜溝を通り、中子とノズル本体の前面との間の空間を旋回して噴出口から噴出され、中空円錐状の噴霧パターンを形成するようにしたもの（一般に旋回型と呼ばれるもの）があった。 Conventionally, as a spray nozzle for spraying a liquid such as a pesticide, a cylindrical nozzle body having an opening on the rear surface side and a closed front surface in the center, and a cylindrical nozzle body housed inside the nozzle body and on the outer periphery. A core having a plurality of inclined grooves is provided, and the liquid supplied from the rear surface side of the nozzle body passes through the inclined grooves of the core and swirls in the space between the core and the front surface of the nozzle body to eject the nozzle. There was one that was ejected from and formed a hollow conical spray pattern (generally called a swirl type).

ところが、上記のような旋回型の噴霧ノズルは、液体を旋回させながら噴出させることによって霧化しており、霧粒が細かくなるとともに比較的広い角度で拡散するので、農作物等の対象物への付着性は良いが、霧粒を遠い場所まで到達させようとするような使い方にはあまり適していない。一方、噴出口の寸法変更等によって霧粒の粒径が大きくなるようにすれば、霧粒の到達性は向上するが、付着性が低下してしまう。 However, the swirling spray nozzle as described above is atomized by ejecting the liquid while swirling, and the mist particles become finer and diffuse at a relatively wide angle, so that they adhere to objects such as agricultural products. It has good properties, but it is not very suitable for use in trying to reach distant places. On the other hand, if the particle size of the mist particles is increased by changing the dimensions of the spout, the reachability of the mist particles is improved, but the adhesiveness is lowered.

これに対し、背丈の高い農作物への農薬や水の散布等、遠い場所への霧粒の到達性が重視される用途に適した噴霧ノズルとして、ノズル本体の前面に、一対の噴出口をそれぞれの中心線どうしがノズル本体の前方で交差するように設けた構造のものが提案されている（例えば、特許文献１参照。）。 On the other hand, as a spray nozzle suitable for applications where the reachability of mist particles to distant places is important, such as spraying pesticides and water on tall crops, a pair of spouts are provided on the front of the nozzle body. There has been proposed a structure in which the center lines of the nozzles are provided so as to intersect each other in front of the nozzle body (see, for example, Patent Document 1).

上記特許文献１で提案されている噴霧ノズルでは、ノズル本体の後面側から供給されて液体通路を通り各噴出口から噴出された液体が、ノズル本体の前方の所定位置で互いに衝突して霧化し、両噴出口を結ぶ方向に薄く、その方向と直交する平面に沿って扇形に拡がる噴霧パターンを形成することにより、旋回型の噴霧ノズルに比べると、粗い霧粒が狭い範囲に噴霧されて遠い場所まで到達するとされている。 In the spray nozzle proposed in Patent Document 1, the liquid supplied from the rear surface side of the nozzle body, passing through the liquid passage, and ejected from each ejection port collide with each other at a predetermined position in front of the nozzle body and atomize. By forming a spray pattern that is thin in the direction connecting both spouts and spreads in a fan shape along a plane orthogonal to that direction, coarse mist particles are sprayed in a narrow range and far away compared to a swirl type spray nozzle. It is said to reach the place.

特許第３８９０１２１号公報Japanese Patent No. 3890121

しかしながら、上記のように一対の噴出口から噴出した液体を衝突させて噴霧する方式の噴霧ノズルは、円形の噴出口から噴出された液体が噴出口の直径よりも僅かに小さい直径の噴水流となるため、使用条件等によってはその２つの噴水流を所定の位置で衝突させることができず、噴霧パターンが乱れて霧粒の到達性が低下するおそれがある。 However, in the spray nozzle of the method of colliding and spraying the liquid ejected from the pair of outlets as described above, the liquid ejected from the circular outlet has a diameter slightly smaller than the diameter of the outlet. Therefore, depending on the usage conditions and the like, the two fog streams cannot collide with each other at a predetermined position, and the spray pattern may be disturbed to reduce the reachability of the mist particles.

そこで、本発明は、一対の噴出口から噴出した液体を衝突させて噴霧する方式の噴霧ノズルにおいて、衝突した液体の霧化によって生じる霧粒の到達性を向上させることを課題とする。 Therefore, an object of the present invention is to improve the reachability of mist particles generated by atomization of the collided liquid in a spray nozzle of a type in which liquids ejected from a pair of spouts are collided and sprayed.

上記の課題を解決するために、本発明は、後面側から供給される液体を通す液体通路と、前記液体通路と連通して前面側に開口する一対の噴出口を有するノズル本体を備え、前記ノズル本体の一対の噴出口は、それぞれの中心線どうしがノズル本体の前方で交差するように設けられており、前記ノズル本体の後面側から供給されて液体通路を通り、前記一対の噴出口から噴出された液体が、前記ノズル本体の前方で互いに衝突して霧化し、扁平な扇形の噴霧パターンを形成するようになっている噴霧ノズルにおいて、前記一対の噴出口は、両噴出口を結ぶ方向と直交する方向で互いに平行に延びる長孔となっている構成を採用した。 In order to solve the above problems, the present invention comprises a nozzle body having a liquid passage through which a liquid supplied from the rear surface side passes and a pair of nozzles communicating with the liquid passage and opening to the front side. The pair of nozzle bodies are provided so that their center lines intersect with each other in front of the nozzle body, and are supplied from the rear surface side of the nozzle body, pass through a liquid passage, and are supplied from the pair of nozzle bodies. In a spray nozzle in which the ejected liquid collides with each other in front of the nozzle body and atomizes to form a flat fan-shaped spray pattern, the pair of spouts are in the direction connecting the two spouts. We adopted a configuration in which the holes extend parallel to each other in the direction orthogonal to.

上記の構成によれば、ノズル本体の前面側に開口する一対の噴出口から噴出された液体が、噴出口と同じ方向に拡がる扁平な噴流となり、従来のように噴出口を円形とした場合よりも確実に所定の位置で衝突して霧化し、各噴出口の延びる方向に薄く、その方向と直交する平面に沿って扇形に拡がる噴霧パターンを形成するようになるとともに、噴霧パターンの扇形の両側部を形成する霧粒の粒径が大きくなり、その粒径の大きい霧粒に小さい粒径の霧粒が引き寄せられるようになるので、霧粒の到達性を向上させることができる。 According to the above configuration, the liquid ejected from the pair of spouts that open on the front side of the nozzle body becomes a flat spout that spreads in the same direction as the spout, as compared with the conventional case where the spout is circular. Will surely collide at a predetermined position and atomize, forming a spray pattern that is thin in the extending direction of each spout and spreads in a fan shape along a plane orthogonal to that direction, and both sides of the fan shape of the spray pattern. Since the particle size of the mist particles forming the portion becomes large and the mist particles having a small particle size are attracted to the mist particles having a large particle size, the reachability of the mist particles can be improved.

ここで、前記ノズル本体の一対の噴出口は、それぞれの中心線どうしがなす角度（交角）が６０～８０度となるように設けることが好ましい。これは、２つの噴出口の中心線の交角が６０度よりも小さいと、噴霧パターンの扇形の中心角（噴霧角度）が小さくなって霧粒の到達性は高まるが、勢いが強くなりすぎて対象物（例えば農作物の葉面）を傷めたりするおそれがある一方、交角が８０度よりも大きいと、噴霧角度が大きくなりすぎて霧粒の到達性が所望のレベルに達しなくなるおそれがあるからである。 Here, it is preferable that the pair of spouts of the nozzle body are provided so that the angles (intersection angles) formed by the center lines of the nozzle bodies are 60 to 80 degrees. This is because if the intersection angle of the center lines of the two spouts is smaller than 60 degrees, the center angle (spray angle) of the fan shape of the spray pattern becomes smaller and the reachability of the fog particles increases, but the momentum becomes too strong. While there is a risk of damaging the object (for example, the leaf surface of the agricultural product), if the angle of intersection is larger than 80 degrees, the spray angle may become too large and the reachability of the mist particles may not reach the desired level. Is.

また、前記ノズル本体の液体通路を、前記各噴出口に対して１つずつ別々に設けるようにすれば、ノズル本体の後面側から各噴出口までの液体の流れが安定し、各噴出口から噴出された液体が直進性の高い噴流となって互いに衝突するようになるので、霧粒の到達性を一層向上させることができる。 Further, if the liquid passage of the nozzle body is provided separately for each of the jets, the flow of liquid from the rear surface side of the nozzle body to each jet is stabilized, and the liquid flows from each jet. Since the ejected liquid becomes a jet with high straightness and collides with each other, the reachability of the mist particles can be further improved.

さらに、前記ノズル本体の一対の噴出口を、両噴出口の長手方向の両側または片側において、互いに対応する片端の位置が長手方向にずれるように設けることにより、霧粒の到達性をより一層向上させることができる。すなわち、一対の噴出口を長手方向にずらして設ければ、噴霧パターンの扇形の少なくとも片側には、一方の噴出口から噴出された液体が、もう一方の噴出口から噴出された液体と衝突せず、扇形の内側の霧粒に比べて粒径の大きい霧粒となって大きい速度で直進する領域が生ずるので、その直進する霧粒に引き寄せられた扇形の内側の細かい霧粒も、より遠い場所まで到達するようになる。 Further, by providing the pair of nozzles of the nozzle body so that the positions of the one ends corresponding to each other are displaced in the longitudinal direction on both sides or one side in the longitudinal direction of both nozzles, the reachability of the mist particles is further improved. Can be made to. That is, if the pair of spouts are provided so as to be offset in the longitudinal direction, the liquid ejected from one spout collides with the liquid ejected from the other spout on at least one side of the fan shape of the spray pattern. However, since there is a region where the mist particles have a larger particle size than the mist particles inside the fan shape and travel straight at a high speed, the fine mist particles inside the fan shape attracted to the straight mist particles are also farther away. You will reach the place.

本発明の噴霧ノズルは、上述したように、ノズル本体の前面側に開口する一対の噴出口を長孔とすることにより、各噴出口から噴出された液体どうしが確実に衝突するようにしたものであるから、従来のように噴出口を円形としたものに比べて、霧粒の到達性の向上が図れる。また、細かい霧粒も遠い場所まで到達させることができるので、対象物への付着性も確保される。したがって、この噴霧ノズルを霧粒の到達性が重視される用途、例えば背丈の高い農作物への農薬の散布等に用いれば、その散布作業を効率よく行うことができる。 As described above, the spray nozzle of the present invention has a pair of spouts that open on the front side of the nozzle body as elongated holes so that the liquids spouted from each spout can surely collide with each other. Therefore, the reachability of the mist particles can be improved as compared with the conventional one having a circular spout. In addition, since fine mist particles can reach a distant place, adhesion to an object is ensured. Therefore, if this spray nozzle is used for applications in which the reachability of mist particles is important, for example, spraying pesticides on tall agricultural products, the spraying work can be performed efficiently.

実施形態の噴霧ノズルの分解斜視図An exploded perspective view of the spray nozzle of the embodiment 図１のノズル本体の組立状態の斜視図Perspective view of the assembled state of the nozzle body of FIG. 図１の噴霧ノズルの縦断正面図Longitudinal front view of the spray nozzle of FIG. 図２のノズル本体の要部を拡大して示す縦断正面図Longitudinal front view showing the main part of the nozzle body of FIG. 2 in an enlarged manner. （ａ）、（ｂ）はそれぞれ図１の噴霧ノズルによる噴霧パターンの説明図(A) and (b) are explanatory views of the spray pattern by the spray nozzle of FIG. 1, respectively. 図１のノズル本体の変形例の平面図Top view of a modified example of the nozzle body of FIG. （ａ）、（ｂ）はそれぞれ図６のノズル本体から噴出された液体の衝突前後の挙動の説明図(A) and (b) are explanatory views of the behavior before and after the collision of the liquid ejected from the nozzle body of FIG. 6, respectively. 図６のノズル本体を用いた場合の液体衝突直後の噴霧状態の説明図（前方側から見た図）Explanatory view of the spray state immediately after the liquid collision when the nozzle body of FIG. 6 is used (view from the front side). （ａ）、（ｂ）はそれぞれ図６のノズル本体を用いた場合の噴霧パターンの説明図(A) and (b) are explanatory views of the spray pattern when the nozzle body of FIG. 6 is used, respectively.

以下、図１乃至図９に基づき、本発明の実施形態を説明する。この噴霧ノズルは、図１乃至図３に示すように、２つのノズル片１ａ、１ｂからなるノズル本体１と、ノズル本体１を通す状態で支持するノズル受け２と、ノズル本体１の後面側開口部を塞ぐノズルガイド３と、ノズル受け２およびノズルガイド３の後端面と密着するように配される円筒状のパッキン４と、パッキン４の内側に配されるフィルタ５と、ノズル受け２の後半部およびパッキン４に外嵌される保持部６ａと外部の液体供給源に接続される接続部６ｂとからなるホルダ６と、ノズル受け２の前半部に外嵌される状態で、ホルダ６の保持部６ａとねじ結合されるキャップ７とを備えている。なお、これらの各図および図４では、上方が噴霧ノズルの前方（液体が噴出される方向）となっている。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 9. As shown in FIGS. 1 to 3, the spray nozzle includes a nozzle body 1 composed of two nozzle pieces 1a and 1b, a nozzle receiver 2 that supports the nozzle body 1 while passing through the nozzle body 1, and an opening on the rear surface side of the nozzle body 1. The nozzle guide 3 that closes the portion, the cylindrical packing 4 that is arranged so as to be in close contact with the nozzle receiver 2 and the rear end surface of the nozzle guide 3, the filter 5 that is arranged inside the packing 4, and the latter half of the nozzle receiver 2. The holder 6 is composed of a holding portion 6a that is externally fitted to the portion and the packing 4, and a connecting portion 6b that is connected to an external liquid supply source, and a holder 6 that is externally fitted to the front half of the nozzle receiver 2. A cap 7 to be screwed to the portion 6a is provided. In each of these figures and FIG. 4, the upper part is in front of the spray nozzle (direction in which the liquid is ejected).

前記ノズル本体１は、樹脂製であり、本体部１１の外形が前端から後端近傍まで断面略小判形に形成されており、その後端の円筒部にフランジ１２が設けられている。また、本体部１１の前面側には、側面の二面幅部と直交する一対の傾斜面１３からなるＶ字溝が形成され、本体部１１の内部には、後面側の開口から別々に各傾斜面１３の裏側面に至る一対の液体通路１４が設けられている。そして、本体部１１のＶ字溝には、それぞれ液体通路１４と連通して傾斜面１３に開口する一対の噴出口１５が設けられている。 The nozzle main body 1 is made of resin, and the outer shape of the main body portion 11 is formed in a substantially oval cross section from the front end to the vicinity of the rear end, and a flange 12 is provided on the cylindrical portion at the rear end. Further, a V-shaped groove formed of a pair of inclined surfaces 13 orthogonal to the width across flats on the side surface is formed on the front surface side of the main body portion 11, and each of the inside of the main body portion 11 is separately separated from the opening on the rear surface side. A pair of liquid passages 14 leading to the back surface of the inclined surface 13 are provided. The V-shaped groove of the main body 11 is provided with a pair of spouts 15 that communicate with the liquid passage 14 and open to the inclined surface 13.

ここで、図４に示すように、ノズル本体１の前面側の一対の傾斜面１３は、互いのなす角度が１１０度となるように形成されており、各傾斜面１３と直交する方向に設けられた一対の噴出口１５の中心線Ｃどうしがノズル本体１の前方の所定位置で交差している。すなわち、一対の噴出口１５はそれぞれの中心線Ｃどうしの交角θが７０度となるように設けられており、ノズル本体１の後面側から供給されて各液体通路１４を通り、各噴出口１５から噴出された液体が、ノズル本体１の前方において７０度の交角で互いに衝突するようになっている。 Here, as shown in FIG. 4, the pair of inclined surfaces 13 on the front surface side of the nozzle body 1 are formed so that the angle formed by each other is 110 degrees, and are provided in a direction orthogonal to each inclined surface 13. The center lines C of the pair of spouts 15 intersect at a predetermined position in front of the nozzle body 1. That is, the pair of spouts 15 are provided so that the intersection angle θ between the center lines C is 70 degrees, and the pair of spouts 15 are supplied from the rear surface side of the nozzle body 1 and pass through the liquid passages 14 to each spout 15. The liquids ejected from the nozzle collide with each other at an angle of 70 degrees in front of the nozzle body 1.

また、図１および図２に示すように、各噴出口１５は、両者を結ぶ方向と直交する方向で互いに平行に延びる長孔とされており、両者と平行なノズル本体１の中心線に対して対称に設けられている。その長孔の具体的な形状は、長手方向両端の孔縁が半円形で中央部の両側の孔縁が平行な長円形である。 Further, as shown in FIGS. 1 and 2, each spout 15 is an elongated hole extending in parallel with each other in a direction orthogonal to the direction connecting the two, with respect to the center line of the nozzle body 1 parallel to both. It is provided symmetrically. The specific shape of the oblong hole is an oval shape in which the hole edges at both ends in the longitudinal direction are semicircular and the hole edges on both sides of the central portion are parallel.

そして、このノズル本体１は、液体通路１４と傾斜面１３（および噴出口１５）をそれぞれ1つずつ有する２つのノズル片１ａ、１ｂに分割されており、一方のノズル片１ａの両側の二面幅部から他方のノズル片１ｂに向かって延びる係合爪１６が、他方のノズル片１ｂの両側の二面幅部に形成された係合凹部１７に係合することにより一体化されるようになっている。その係合爪１６と係合凹部１７の係合はスナップフィットによって容易に行うことができる。なお、このノズル本体１を形成する樹脂としては、ＰＰＳ（ポリフェニレンサルファイド）やＰＯＭ（ポリアセタール）等の摩耗性に優れたものが好ましい。 The nozzle body 1 is divided into two nozzle pieces 1a and 1b each having a liquid passage 14 and an inclined surface 13 (and a spout 15), and two surfaces on both sides of one nozzle piece 1a. The engaging claws 16 extending from the width portion toward the other nozzle piece 1b are integrated by engaging with the engaging recesses 17 formed on both side width portions of the other nozzle piece 1b. It has become. The engagement between the engaging claw 16 and the engaging recess 17 can be easily performed by a snap fit. As the resin forming the nozzle body 1, those having excellent wear resistance such as PPS (polyphenylene sulfide) and POM (polyacetal) are preferable.

また、図１および図３に示すように、前記ノズル受け２は、内周および外周にそれぞれ後方を向く段差面を有する円筒状部材である。そして、その内周の段差面がノズル本体１のフランジ１２の前面と当接する状態で、ノズル本体１の本体部１１に外嵌され、外周の段差面から突出する複数の突起２１により、後述するようにホルダ６に対して位置決め固定されている。 Further, as shown in FIGS. 1 and 3, the nozzle receiver 2 is a cylindrical member having stepped surfaces facing rearward on the inner circumference and the outer circumference, respectively. Then, in a state where the stepped surface on the inner circumference is in contact with the front surface of the flange 12 of the nozzle body 1, the plurality of protrusions 21 which are externally fitted to the main body 11 of the nozzle body 1 and project from the stepped surface on the outer circumference will be described later. As shown above, it is positioned and fixed with respect to the holder 6.

前記ノズルガイド３は、後面側が開口し、前面が閉じられた円筒部３１の後端部分にフランジ３２が設けられている。また、その円筒部３１の前面から一対の小径筒部３３が突出しており、各小径筒部３３を貫通する孔が後面側の開口部に連通している。そして、各小径筒部３３がそれぞれノズル本体１の液体通路１４に挿入される状態で、フランジ３２がノズル受け２の後端部の内周に嵌め込まれ、後面側から供給される液体をノズル本体１の各液体通路１４に均等に送り出すようになっている。なお、各小径筒部３３の外周面とノズル本体１の後端部の内周面との間、および円筒部３１の外周面とノズル受け２の内周面との間には、それぞれＯリング８、９が組み込まれている。 The nozzle guide 3 is provided with a flange 32 at the rear end portion of the cylindrical portion 31 whose rear surface side is open and whose front surface is closed. Further, a pair of small-diameter tubular portions 33 project from the front surface of the cylindrical portion 31, and holes penetrating each small-diameter tubular portion 33 communicate with the opening on the rear surface side. Then, with each small-diameter tubular portion 33 inserted into the liquid passage 14 of the nozzle body 1, the flange 32 is fitted into the inner circumference of the rear end portion of the nozzle receiver 2, and the liquid supplied from the rear surface side is supplied to the nozzle body. It is designed to be evenly delivered to each liquid passage 14 of 1. An O-ring is provided between the outer peripheral surface of each small-diameter tubular portion 33 and the inner peripheral surface of the rear end portion of the nozzle body 1, and between the outer peripheral surface of the cylindrical portion 31 and the inner peripheral surface of the nozzle receiver 2. 8 and 9 are incorporated.

前記パッキン４は、その前端面がノズル受け２およびノズルガイド３の後端面に当接する状態で、ホルダ６の保持部６ａの内周に嵌め込まれている。 The packing 4 is fitted into the inner circumference of the holding portion 6a of the holder 6 in a state where the front end surface thereof is in contact with the rear end surfaces of the nozzle receiver 2 and the nozzle guide 3.

前記フィルタ５は、半球面状に形成された網状部５１と、網状部５１の周縁から径方向外側に張り出す取付部５２とからなり、その取付部５２がパッキン４後端の環状凹部４１に嵌め込まれる状態で、パッキン４とホルダ６の接続部６ｂによって固定されている。 The filter 5 includes a net-like portion 51 formed in a hemispherical shape and a mounting portion 52 projecting radially outward from the peripheral edge of the net-like portion 51, and the mounting portion 52 is formed in an annular recess 41 at the rear end of the packing 4. In the fitted state, it is fixed by the connecting portion 6b of the packing 4 and the holder 6.

前記ホルダ６は、その保持部６ａの内側にパッキン４とフィルタ５とノズル受け２およびノズルガイド３の後端側部分を収納した状態で、保持部６ａの前端に設けられた複数の切り欠き６１がノズル受け２の突起２１と嵌まり合うことにより、ノズル受け２と位置決め固定され、保持部６ａの外周に設けられたおねじでキャップ７の内周のめねじとねじ結合している。そして、接続部６ｂを貫通する孔の後端側内周に設けられためねじで液体供給源側の管等（図示省略）の先端部に設けられたおねじとねじ結合し、パッキン４の内側へ液体を送り出すようになっている。 The holder 6 has a plurality of notches 61 provided at the front end of the holding portion 6a in a state where the packing 4, the filter 5, the nozzle receiver 2 and the rear end side portion of the nozzle guide 3 are housed inside the holding portion 6a. Is positioned and fixed to the nozzle receiver 2 by fitting with the protrusion 21 of the nozzle receiver 2, and is screwed to the female screw on the inner circumference of the cap 7 with a male screw provided on the outer periphery of the holding portion 6a. Then, since it is provided on the inner circumference of the rear end side of the hole penetrating the connecting portion 6b, it is screw-coupled with a male screw provided at the tip of a pipe or the like (not shown) on the liquid supply source side with a screw to form the inside of the packing 4. It is designed to send liquid to.

前記キャップ７は、前面側の開口にノズル本体１の本体部１１を通される円筒状部材である。そして、その内周に設けられた段差面がノズル受け２の前端面に当接する状態で、後端側内周に設けられためねじでホルダ６の保持部６ａのおねじとねじ結合されることにより、ノズル受け２を介してノズル本体１を抜け止め固定している。 The cap 7 is a cylindrical member through which the main body 11 of the nozzle main body 1 is passed through the opening on the front surface side. Then, in a state where the stepped surface provided on the inner circumference is in contact with the front end surface of the nozzle receiver 2, since it is provided on the inner circumference on the rear end side, it is screw-coupled with the screw of the holding portion 6a of the holder 6. As a result, the nozzle body 1 is prevented from coming off and fixed via the nozzle receiver 2.

この噴霧ノズルは、上記の構成であり、前記液体供給源から供給された液体が、ホルダ６の接続部６ｂからパッキン４の内側へ送られてフィルタ５を通過し、ノズルガイド３を介してノズル本体１の一対の液体通路１４に送り込まれて噴出口１５から噴出される。そして、各噴出口１５から噴出された液体が、図５（ａ）、（ｂ）に示すように、ノズル本体１の前方で互いに衝突して霧化し、各噴出口１５の延びる方向に薄く、その方向と直交する平面に沿って扇形に拡がる噴霧パターンを形成するようになっている。 The spray nozzle has the above configuration, and the liquid supplied from the liquid supply source is sent from the connection portion 6b of the holder 6 to the inside of the packing 4 to pass through the filter 5, and the nozzle is passed through the nozzle guide 3. It is sent into the pair of liquid passages 14 of the main body 1 and ejected from the ejection port 15. Then, as shown in FIGS. 5 (a) and 5 (b), the liquid ejected from each of the spouts 15 collides with each other in front of the nozzle body 1 and atomizes, and becomes thin in the extending direction of each of the spouts 15. A spray pattern that spreads in a fan shape along a plane orthogonal to that direction is formed.

ここで、ノズル本体１の一対の噴出口１５は、両噴出口１５を結ぶ方向と直交する方向で互いに平行に延びる長孔としているので、各噴出口１５から噴出された液体は、噴出口１５と同じ方向に拡がる扁平な噴流となる。そして、その扁平な噴流どうしは、従来のような円形の噴出口から噴出される断面円形の噴流よりも確実に所定の位置で衝突することになる。また、衝突後の液体の噴霧パターンは、噴出口を円形とした場合とは扇形の拡がる方向が異なり、扇形の両側部を形成する霧粒の粒径が大きくなって、その粒径の大きい霧粒に小さい粒径の霧粒が引き寄せられるようになる。これにより、この噴霧ノズルは、従来よりも霧粒が全体として遠い場所まで到達する、すなわち霧粒の到達性に優れたものとなっている。しかも、粒径の小さい霧粒も遠い場所まで到達するので、対象物への付着性も確保される。 Here, since the pair of jets 15 of the nozzle body 1 are elongated holes extending in parallel with each other in the direction orthogonal to the direction connecting the two jets 15, the liquid ejected from each jet 15 is the jet 15. It becomes a flat jet that spreads in the same direction as. Then, the flat jets collide with each other at a predetermined position more reliably than the conventional jets having a circular cross section ejected from a circular jet. In addition, in the liquid spray pattern after collision, the fan-shaped spreading direction is different from the case where the ejection port is circular, and the particle size of the fog particles forming both sides of the fan shape becomes large, and the mist with a large particle size becomes large. Small particle size mist particles will be attracted to the particles. As a result, the spray nozzle has an excellent reachability of the mist particles, that is, the mist particles reach a distant place as a whole as compared with the conventional case. Moreover, since the mist particles having a small particle size reach a distant place, the adhesion to the object is also ensured.

また、ノズル本体１の液体通路１４を各噴出口１５に対して１つずつ別々に設けているので、ノズル本体１の後面側から各噴出口１５までの液体の流れが安定し、各噴出口１５から噴出された液体が直進性の高い噴流となって互いに衝突するようになっており、このことも霧粒の到達性を高める要因の一つとなっている。 Further, since the liquid passage 14 of the nozzle body 1 is provided separately for each jet port 15, the flow of liquid from the rear surface side of the nozzle body 1 to each jet port 15 is stable, and each jet port is stable. The liquid ejected from No. 15 becomes a highly straight jet and collides with each other, which is also one of the factors for improving the reachability of the mist particles.

そして、ノズル本体１の一対の噴出口１５の中心線Ｃどうしの交角θを７０度としたことにより、霧粒の到達性を十分に確保しつつ、霧粒を適度な勢いで農作物等の対象物に噴霧できるようになっている。なお、その交角θは７０度が最も好ましいが、６０～８０度の範囲であれば７０度の場合とほぼ同様の作用効果が得られる。 Then, by setting the intersection angle θ between the center lines C of the pair of nozzles 15 of the nozzle body 1 to 70 degrees, the mist particles can be targeted for agricultural products or the like with an appropriate force while sufficiently ensuring the reachability of the mist particles. It can be sprayed on objects. The intersection angle θ is most preferably 70 degrees, but if it is in the range of 60 to 80 degrees, almost the same effect as in the case of 70 degrees can be obtained.

さらに、この噴霧ノズルでは、全体としてやや複雑な形状となっているノズル本体１を２つのノズル片１ａ、１ｂに分割し、スナップフィットによって一体化できるようにしているので、ノズル本体を一体成形する場合に比べて容易に製作できるという特長もある。 Further, in this spray nozzle, the nozzle body 1 having a slightly complicated shape as a whole is divided into two nozzle pieces 1a and 1b so that they can be integrated by snap-fitting, so that the nozzle body is integrally molded. There is also a feature that it can be manufactured more easily than in the case.

図６はノズル本体１の噴出口１５の配置を変えた例を示す。この変形例では、一対の噴出口１５を、両噴出口１５の長手方向の両側において、互いに対応する片端の位置が長手方向にずれるように設けている。このように両噴出口１５の配置を長手方向にずらすと、図７（ａ）、（ｂ）および図８に示すように、両噴出口１５から噴出された液体Ａの多くは、ノズル本体１の前方の所定位置で互いに衝突し、粒径の小さい霧粒Ｂとなって扇形に拡がっていくが、各噴出口１５の長手方向にずれた側の端部から噴出されたものは、所定位置で衝突せずに直進するようになる。そして、衝突せずに直進する液体Ａは、その後、扇形の内側の霧粒に比べて大きい粒径と大きい速度をもつ霧粒となって、わずかに拡がりながら直進する。これにより、図９（ａ）、（ｂ）に示すように、粒径の大きい霧粒が扇形の両側部を形成するようになり、その粗い霧粒に引き寄せられた細かい霧粒が、図１乃至図５で示した例よりも遠い場所まで到達するようになるので、霧粒の到達性をより一層向上させることができる。 FIG. 6 shows an example in which the arrangement of the ejection port 15 of the nozzle body 1 is changed. In this modification, a pair of spouts 15 are provided on both sides of both spouts 15 in the longitudinal direction so that the positions of one ends corresponding to each other are displaced in the longitudinal direction. When the arrangement of both spouts 15 is shifted in the longitudinal direction in this way, as shown in FIGS. 7 (a), 7 (b) and 8, most of the liquid A ejected from both spouts 15 is the nozzle body 1. It collides with each other at a predetermined position in front of the You will be able to go straight without collision. Then, the liquid A that goes straight without colliding becomes a mist particle having a larger particle size and a higher speed than the mist particles inside the fan shape, and then goes straight while spreading slightly. As a result, as shown in FIGS. 9A and 9B, the mist particles having a large particle size form both sides of the fan shape, and the fine mist particles attracted to the coarse mist particles are formed in FIG. Since it reaches a place farther than the example shown in FIG. 5, the reachability of the mist particles can be further improved.

なお、図６乃至図９に示した例では、各噴出口１５を互いに対応する両端の位置が長手方向にずれるように配置したが、各噴出口の配置は、長手方向の片側だけで、互いに対応する片端の位置が長手方向にずれるようにすることもできる。 In the examples shown in FIGS. 6 to 9, the spouts 15 are arranged so that the positions of both ends corresponding to each other are displaced in the longitudinal direction. The position of the corresponding end can also be offset in the longitudinal direction.

今回開示された実施の形態はすべての点で例示であって制限的なものではないと考えられるべきである。本発明の範囲は、上記した意味ではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。 It should be considered that the embodiments disclosed this time are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the scope of claims, not the above-mentioned meaning, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.

例えば、ノズル本体の噴出口の形状は、実施形態のような長円形に限らず、楕円形や矩形等の長孔としてもよい。また、各噴出口の中心線どうしの交角は、実施形態で示した範囲外でも用途等に応じて適宜設定することができる。 For example, the shape of the spout of the nozzle body is not limited to the oval shape as in the embodiment, but may be an elongated hole such as an ellipse or a rectangle. Further, the intersection angle between the center lines of each spout can be appropriately set according to the application and the like even outside the range shown in the embodiment.

さらに、ノズル本体は、製作しやすさの点から、実施形態のように２分割された樹脂製のものとすることが好ましいが、一体成形されたものや、金属製のものを採用することもできる。 Further, from the viewpoint of ease of manufacture, the nozzle body is preferably made of resin divided into two as in the embodiment, but an integrally molded one or a metal one may be adopted. can.

１ ノズル本体
１ａ、１ｂ ノズル片
２ ノズル受け
３ ノズルガイド
４ パッキン
５ フィルタ
６ ホルダ
６ａ 保持部
６ｂ 接続部
７ キャップ
１３ 傾斜面
１４ 液体通路
１５ 噴出口
１６ 係合爪
１７ 係合凹部 1 Nozzle body 1a, 1b Nozzle piece 2 Nozzle receiver 3 Nozzle guide 4 Packing 5 Filter 6 Holder 6a Holding part 6b Connection part 7 Cap 13 Inclined surface 14 Liquid passage 15 Spout 16 Engagement claw 17 Engagement recess

Claims (3)

後面側から供給される液体を通す液体通路と、前記液体通路と連通して前面側に開口する一対の噴出口を有するノズル本体を備え、前記ノズル本体の一対の噴出口は、それぞれの中心線どうしがノズル本体の前方で交差するように設けられており、
前記ノズル本体の後面側から供給されて液体通路を通り、前記一対の噴出口から噴出された液体が、前記ノズル本体の前方で互いに衝突して霧化し、扁平な扇形の噴霧パターンを形成するようになっている噴霧ノズルにおいて、
前記一対の噴出口は、両噴出口を結ぶ方向と直交する方向で互いに平行に延びる同一形状の長孔であ って、それぞれの中心線どうしがなす角度が６０～８０度となるように設けられており、
前記噴霧パターンは、前記一対の噴出口の延びる方向に薄く、その方向と直交する平面に沿って扇形に拡がるものである ことを特徴とする噴霧ノズル。 A nozzle body having a liquid passage for passing a liquid supplied from the rear surface side and a pair of nozzles communicating with the liquid passage and opening to the front side is provided, and the pair of nozzle bodies has their respective center lines. They are provided so that they intersect in front of the nozzle body.
The liquid supplied from the rear surface side of the nozzle body, passing through the liquid passage, and ejected from the pair of spouts collide with each other in front of the nozzle body and atomize to form a flat fan-shaped spray pattern. In the spray nozzle that is
The pair of spouts extend parallel to each other in a direction orthogonal to the direction connecting the two spouts.Same shapeWith a long hole Therefore, the angle between the center lines is 60 to 80 degrees.
The spray pattern is thin in the extending direction of the pair of spouts and spreads in a fan shape along a plane orthogonal to that direction. A spray nozzle characterized by that. 前記ノズル本体の液体通路は、前記各噴出口に対して１つずつ別々に設けられていることを特徴とする請求項１に記載の噴霧ノズル。 The spray nozzle according to claim 1 , wherein one liquid passage of the nozzle body is provided separately for each of the spouts. 前記ノズル本体の一対の噴出口は、両噴出口の長手方向の両側または片側において、互いに対応する片端の位置が長手方向にずれるように設けられていることを特徴とする請求項１または２に記載の噴霧ノズル。

According to claim 1 or 2 , the pair of spouts of the nozzle body are provided so that the positions of the one ends corresponding to each other are deviated in the longitudinal direction on both sides or one side of both spouts in the longitudinal direction. The spray nozzle described.
JP2021112047A 2021-03-03 2021-07-06 Spray nozzle Active JP7104442B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
TW111106184A TW202235164A (en) 2021-03-03 2022-02-21 Spray nozzle
PCT/JP2022/007533 WO2022186031A1 (en) 2021-03-03 2022-02-24 Spray nozzle
KR1020237032966A KR20230150853A (en) 2021-03-03 2022-02-24 spray nozzle

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021033198 2021-03-03
JP2021033198 2021-03-03

Publications (2)

Publication Number Publication Date
JP7104442B1 true JP7104442B1 (en) 2022-07-21
JP2022135867A JP2022135867A (en) 2022-09-15

Family

ID=82492256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021112047A Active JP7104442B1 (en) 2021-03-03 2021-07-06 Spray nozzle

Country Status (4)

Country Link
JP (1) JP7104442B1 (en)
KR (1) KR20230150853A (en)
TW (1) TW202235164A (en)
WO (1) WO2022186031A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1085631A (en) * 1996-09-19 1998-04-07 Yamaho Giken Kk Spray nozzle
JP2001286790A (en) * 2000-04-07 2001-10-16 Nissan Motor Co Ltd Liquid jet device
JP2003534124A (en) * 2000-05-22 2003-11-18 コーテックス テクストロン シーヴイエス リミテッド Fluid ejection device
US9138753B1 (en) * 2010-09-02 2015-09-22 Hiroshi Takahara Spray nozzle and the application

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1085631A (en) * 1996-09-19 1998-04-07 Yamaho Giken Kk Spray nozzle
JP2001286790A (en) * 2000-04-07 2001-10-16 Nissan Motor Co Ltd Liquid jet device
JP2003534124A (en) * 2000-05-22 2003-11-18 コーテックス テクストロン シーヴイエス リミテッド Fluid ejection device
US9138753B1 (en) * 2010-09-02 2015-09-22 Hiroshi Takahara Spray nozzle and the application

Also Published As

Publication number Publication date
JP2022135867A (en) 2022-09-15
TW202235164A (en) 2022-09-16
WO2022186031A1 (en) 2022-09-09
KR20230150853A (en) 2023-10-31

Similar Documents

Publication Publication Date Title
EP2703089B1 (en) Spray gun
JP3801967B2 (en) NOZZLE AND METHOD OF INJECTING FLUID TO INTERNAL PERIPHERAL SURFACE BY NOZZLE
RU2434686C2 (en) Fluid sprayer and sprayer head (versions)
JP2769962B2 (en) Air-added sprayer suitable for painting
US5170941A (en) Premixing-type spray gun
EP0456523B1 (en) Low-pressure paint atomizer-air spray gun
KR102168146B1 (en) Full cone air-assisted spray nozzle assembly
JPS62204873A (en) Spray nozzle
JPS60232265A (en) Air type spray nozzle device
JP2018043235A (en) Device for rotating fluid inside spray nozzle, assembly comprising such device and coating device
CN104661757B (en) Spray nozzle device
JP5787408B2 (en) Spray gun
JPH0790186B2 (en) Fan-shaped spray nozzle
WO2016104346A1 (en) Spray gun
KR20040002644A (en) Spray nozzle
JP7104442B1 (en) Spray nozzle
JP7497418B2 (en) Low drift, high efficiency spraying system
EP2695678A1 (en) Spray gun
JPS5946159A (en) Airless spray painting method and gun therefor
JP2013017933A (en) Coating spray gun
US3550860A (en) Spray nozzles
JPS6212438Y2 (en)
JP2534592B2 (en) 2-liquid mixed air assist spray gun
JPH0688006B2 (en) Spray gun for painting
JPS6212439Y2 (en)

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20210909

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20220405

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20220531

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20220628

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20220701

R150 Certificate of patent or registration of utility model

Ref document number: 7104442

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150