JPH1043642A - Atomizing nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a collision surface for the collision of jetted liquid, and to enable a process in which a large amount of the jetted liquid is atomized efficiently in a short time into fine liquid particles by forming channels in an atomizing nozzle with the jet directions determined so that jetted liquid currents ejected from respective channels are made to collide with each other to atomize the liquid. SOLUTION: In an atomizing nozzle A for generating artificial fog, two jet channels 1 for jetting only pressurized water in different directions are formed with the jetting directions determined so that the extension lines of the channel axes Y of the channels 1 cross with each other. In other words, thin round tubes 4a, 4a which form the channels 1 are connected to a nozzle main body 3 equipped with a pressurized water bank 2 connected with a pressurized water supply route B. An opening part 4c for scattering atomized liquid particles is formed in the tube wall of the central position in the longitudinal direction of the bent part 4b of a U-shaped round tube 4 made of a round tube 4a, and the pressurized water from the supply route B is scattered in a flat atomization pattern in the radial directions of the U-shaped round tube 4 to generate artificial fog.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an atomizing nozzle for colliding and spraying a liquid ejected from a flow path for ejecting only the liquid.

[0002]

2. Description of the Related Art An atomizing nozzle atomizes an injection liquid injected from a flow path for injecting only an injection liquid, so that air and a liquid are mixed in advance and then sprayed in an atomized form. Since the nozzle itself can be made smaller compared to the atomizing nozzle of, it is not necessary to connect to the air supply pipe,
Although there is an advantage that it can be easily installed, conventionally, as shown in FIG. 14, the injection liquid from the flow path 01 is supplied to a nozzle body 02 in which one flow path 01 for jetting only the injection liquid is formed. A shaft member 04 having a collision surface 03 to be collided at one end is fixed by a support member 05 so that the flow path 01 and the collision surface 03 are positioned concentrically. It is configured to collide with the collision surface 03 and atomize.

[0003]

Therefore, by ejecting a high-pressure liquid and causing the high-pressure liquid to collide with the collision surface 03 at high speed, it is possible to atomize a large amount of the liquid efficiently in a short time. If it is made possible, the collision surface 03 is liable to wear and deform early due to direct collision with the jet liquid jetted at a high speed, and the durability is impaired. Also,
Since the jetting liquid collides with the collision surface 03, the collision energy of the jetting liquid is easily absorbed by the collision surface 03, and there is a disadvantage that the collision energy cannot be effectively used as energy for atomizing into fine liquid particles. . Also, a flow path 01,
Since the collision surface 03 and the shaft member 04 formed at one end must be fixed in a state of being located concentrically, there is a disadvantage that the production and assembly thereof require high accuracy and the production cost is increased. Further, the position of the collision surface 03 with respect to the flow path 01 is
The jet liquid easily collides with the collision surface 03 due to contact with the shaft member 04 on which the collision surface 03 is formed or another object of the support member 05 fixing the shaft member 04, and the jet liquid collides well with the collision surface 03. There is a possibility that the jet liquid cannot be efficiently atomized over a long period of time.

The present invention has been made in view of the above circumstances, and by devising means for colliding a liquid jet, a large amount of liquid jet can be efficiently atomized into fine liquid particles in a short time. Moreover, it is an object of the present invention to improve the durability. Another object is to make the atomizing nozzle easy to manufacture. Another object is to enable the spray liquid to be efficiently atomized over a long period of time.

[0005]

According to a first aspect of the present invention, there is provided an atomizing nozzle in which a plurality of flow paths are provided in such a manner that a jetting direction is determined so that the jetting liquids from each of them collide with each other and are atomized. Therefore, the jet liquids from the respective jet flow paths directly collide with each other and are atomized without providing a collision surface for causing the jet liquid to collide. In particular, since the liquid jets collide directly with each other and the liquid jets that have collided are atomized, the collision energy can be effectively used as energy for atomizing fine liquid particles. Therefore, there is little risk of abrasion due to collision with the liquid jet, and the high pressure liquid can be jetted because the collision energy of the liquid jet can be effectively used as energy for atomizing fine liquid particles. As a result, a large amount of the spray liquid can be efficiently atomized into fine liquid particles in a short time, and the durability can be improved.

In the atomizing nozzle according to the second aspect, a plurality of flow paths are arranged in such a manner that their flow axis axes cross each other at the flow path exit side, and the flow path wall surfaces of these flow paths are formed. Since the connection wall surface integrally connected on the flow channel outlet side is provided so as to partially surround the intersection of the flow channel shaft cores, escape of the colliding jets to the connection wall surface side is prevented. In this state, the colliding jet liquid scatters intensively from the part where the connection wall surface is not provided, and the energy flow per unit opening area of the liquid passing through the part becomes large, so that the scattered liquid particles are extremely fine. It becomes possible to atomize.

According to a third aspect of the present invention, in the atomizing nozzle, a plurality of flow path forming members forming a flow path are supplied to the flow path from the liquid receiving section to the nozzle body having the liquid receiving section. Since the nozzle body and the flow path forming body are separately processed, they can be connected to each other, and compared with a case where the nozzle body and the flow path forming body are integrally processed into a single material. , Can be easily manufactured.

[0010] In the atomizing nozzle according to the fourth aspect, since the tip portions of the plurality of flow path forming members are connected to each other by the connecting portion, the relative positions of the plurality of flow paths are less likely to be shifted, and the jetting liquid is prolonged. Can be efficiently atomized over a wide range.

According to a fifth aspect of the present invention, in the atomizing nozzle, the connecting portion includes:
Since a plurality of flow path forming bodies are provided with a hollow connecting member for detachably connecting the tips of the plurality of flow path forming bodies, an opening for scattering atomized liquid particles is formed on a peripheral wall of the connecting member. The plurality of flow path forming bodies can be separately manufactured, and the flow path forming bodies can be easily processed.

According to a sixth aspect of the present invention, in the atomizing nozzle, the pipe is connected to the nozzle body such that the liquid from the liquid receiving portion flows into each of both ends thereof, and the liquid atomized on the pipe wall of the pipe is provided. Since an opening for scattering particles is formed, each of the pipe portions sandwiching the opening from the pipe axis direction is configured as a flow path forming body in which the tips are connected to each other by a connecting portion. In addition, the injection directions of the plurality of flow paths can be accurately arranged in a state where the injection liquids from each of the flow paths collide with each other, and can be easily arranged, and can be manufactured more easily.

[0011] In the atomizing nozzle according to claim 7, the opening is:
Since it is formed on the pipe wall of the bent or curved part of the pipe, it is possible to atomize the jet liquid by colliding with each other from a direction obliquely crossing each other, and to change the scattering direction of the atomized liquid particles. It is easy to set in a desired direction.

[0012] In the atomizing nozzle according to claim 8, the opening is:
Since it is formed on the outer tube wall portion of the tube wall of the bent or curved portion, it is possible to collide the jet liquid ejected toward the outside of the opening, and to be atomized. The liquid particles are easily scattered over a wide range.

In the atomizing nozzle according to the ninth aspect, the pipe is bent in a U-shape or a C-shape or a partial arc shape along one plane, so that the pipe is bent and the nozzle body is bent. Can be easily connected and can be manufactured more easily, the stress concentration is less than in the case where the pipe is bent at an acute angle, the connection strength between the injection flow path forming members can be increased, and the durability can be further improved. Further, by forming an opening at a desired position of a pipe portion bent in a U-shape, a C-shape or a partial arc shape, it is easy to easily change the scattering direction of the atomized liquid particles.

In the atomizing nozzle according to the tenth aspect, since the opening is disposed so as not to face the nozzle body side, the atomized liquid particles hardly adhere to the nozzle body, and the adhered liquid particles Is less likely to become droplets and wet the surroundings. In particular, the opening
When the pipe wall is formed by cutting off the tube wall farthest from the nozzle body, it is easier to further reduce the adhesion of the atomized liquid particles to the nozzle body.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] Figs. 1 to 4 show an atomizing nozzle A for generating artificial fog for producing indoor and outdoor spaces, and injects only pressurized water as an injection liquid in different directions. The two injection flow paths 1 for extending the flow path axis Y of the injection flow paths 1 such that the pressurized water injected from each of the injection flow paths 1 collide with each other and atomize. The injection direction is determined such that the lines intersect each other.

The atomizing nozzle A includes a stainless steel nozzle body 3 having a pressurized water reservoir 2 having an inner diameter of about 6 mm as a liquid receiving portion connected to a pressurized water supply passage B,
The inner diameter of the flow path forming body forming the injection flow path 1 is 0.1
Two stainless steel thin circular tubes 4a of about 9 mm are connected so that pressurized water is supplied from the pressurized water reservoir 2 to the inside of the circular tube 4a. Is mounted.

As shown in FIG. 4, each of the circular pipes 4a as the flow path forming body is arranged along one plane.
Both ends 4 of a stainless steel U-shaped circular tube 4 having a semicircular curved portion 4b having a radius of about 2.5 mm and bent into a U-shape.
f is inserted into and connected to the nozzle body 3 so that the pressurized water from the pressurized water reservoir 2 flows into each of the two ends 4f, and is connected to the tube wall at the longitudinal center of the curved portion 4b of the U-shaped circular tube 4. Opening 4 for dispersing atomized liquid particles
The opening 4c is formed in each of the tube portions at a position sandwiching the opening 4c from the tube axis direction.

The opening 4c extends along the pipe axis along the outer circumference of the pipe wall of the curved portion 4b of the U-shaped circular tube 4 which is the farthest from the nozzle body 3. 0.4mm
A tube as a connecting portion formed by cutting out in a substantially semi-cylindrical shape over a length of about a length and not facing the nozzle body 3, and having the distal ends of the circular tubes 4 a left at the locations where the openings 4 c are formed. They are connected to each other by a wall portion 4d.

Therefore, a plurality of the injection flow paths 1 are arranged in such a manner that their flow axis Y intersect each other on the flow outlet 7 side, and the inner surface of the tube wall portion 4d is Are formed on a connection wall surface 8 integrally connecting the flow path wall surfaces on the flow path outlet 7 side, and the connection wall surface 8 is provided so as to partially surround an intersection of the flow path axis cores Y.

Then, pressurized water having a pressure of about 70 kgf / cm ² supplied to the pressurized water reservoir 2 from the supply path B is supplied to the circular pipe 4a.
Are sprayed at a flow rate of about 100 cc / min from each of the injection flow paths 1 formed by the nozzles, and the injection water is injected between the nozzle bodies 3 inside the pipe wall portion 4 d connecting the injection ports 7 of the injection flow paths 1. A spray pattern that is relatively flat along the axis X direction of the pressurized water pool 2 and along the radial direction of the U-shaped pipe 4 is formed by spraying water particles that are made to collide with each other in a state where the protrusion to the side is restricted. It is configured to generate artificial fog by scattered by.

[Second Embodiment] FIGS. 5 to 7 show another embodiment of a flow path forming body 4a for forming the injection flow path 1, which is a U-shaped pipe 4 having a semicircular curved portion 4b. The base 4 is bent so that the opening 4c is formed radially outward of the pressurized water pool 2, and the atomized water particles are sprayed along the axis X of the pressurized water pool 2 in a relatively flat spray pattern. Pool 2
The artificial mist is generated by being scattered outward in the radial direction.

In the case of the present embodiment, the U-shaped circular pipe 4 having a different bending angle on the base side is attached to the nozzle body 3 so that the connection structure between the nozzle body 3 and the supply path B can be changed without changing the connection structure. The direction can be easily set to a desired direction. Other configurations are the same as those of the first embodiment.

[Third Embodiment] FIGS. 8 and 9 show another embodiment of the flow path forming body 4a forming the injection flow path 1, which is provided with a bent portion 4e bent in a V-shape. Both ends 4f of a stainless steel U-shaped circular pipe 4 bent in a substantially U-shape are inserted into and connected to the nozzle body 3 so that pressurized water from the pressurized water reservoir 2 flows into each of the two ends. An opening 4c is formed in the tube wall of the bent portion 4e of the U-shaped circular tube 4, and each of the tube portions is located at a position sandwiching the opening 4c from the tube axis direction. Other configurations are the same as those of the first embodiment.

[Fourth Embodiment] FIGS. 10 and 11 show an embodiment in which two injection channels 1 for injecting pressurized water are each constituted by two throttle channels provided in a nozzle body 3. As shown in the figure, a hemispherical concave surface 6 is formed at the distal end portion 3a of the nozzle body 3 coaxially with the axis X of the pressurized water reservoir 2, and communicates with the pressurized water reservoir 2 in a state of being open to the concave surface 6. The injection direction of the two throttle channels 1 is determined such that the extension lines of the axis Y of the flow channels intersect with each other so that the jet water from each of them collides with each other and is atomized. 3 is formed by cutting.

Therefore, a plurality of the throttle channels 1 are arranged in such a manner that their channel axes Y intersect each other at the channel outlet 7 side. A recessed surface 6 as a connection wall surface 8 integrally connected on the outlet 7 side is provided so as to partially surround an intersection of the flow path axis cores Y. Other configurations are the same as those of the first embodiment.

[Fifth Embodiment] FIG. 12 shows another embodiment of a connecting portion 4d for connecting the tips of a plurality of flow path forming members 4a to each other. As shown in FIG. Each of two bent circular pipes 4a having a distal end portion curved in a J-shape as a formed body and a cylindrical connecting member 4d as a hollow connecting member constituting a connecting portion are separately manufactured.
As shown in (b), the distal end portions of the bent circular tubes 4a are detachably screwed and connected by a cylindrical connecting member 4d, and the base ends of the bent circular tubes 4a are pressurized water pools 2.
It is communicated to. An opening 4c is formed in the peripheral wall of the cylindrical connecting member 4d so that the liquid particles atomized inside the cylindrical connecting member 4d are scattered toward the front of the nozzle body 3. Other configurations are the same as those of the first embodiment.

Sixth Embodiment FIG. 13 shows another embodiment of a flow path forming body 4a which forms the injection flow path 1, in which both ends 4f of a stainless steel pipe 4 bent at a substantially right angle are formed. Nozzle body 3 so that pressurized water from pressurized water pool 2 flows in
Are connected in parallel to each other, and an opening 4c is formed in the outer peripheral tube wall portion of the tube wall of the bent portion 4e, and each of the tube portions sandwiching the opening 4c from the tube axis direction. It is composed of

Accordingly, a plurality of the injection flow paths 1 are arranged in such a manner that their flow axis Y intersect each other at the flow outlet 7 side, and the flow path wall surfaces of the injection flow paths 1 The connection wall 8 integrally connected on the outlet 7 side is formed by the flow path axis Y
It is provided so as to partially surround the intersection.
Other configurations are the same as those of the first embodiment.

[Other Embodiments] An atomizing nozzle may be used which atomizes the liquid jets ejected from three or more jet channels by colliding with each other. 2. Each of the plurality of ejection channels may be configured such that liquid is supplied from a separate liquid receiving unit for each of the ejection channels. 3. Even if the pipe is bent in a C-shape or a partial arc shape along a plane and connected to the nozzle body, an opening is formed at the bent portion for scattering the atomized liquid particles, and the pipe may be formed. good. 4. The inner diameter of the flow path for injecting only the injection liquid may be formed to be smaller toward the flow path outlet side. 5. An atomizing nozzle for atomizing a chemical solution, liquid fuel, or the like may be used.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view

FIG. 2 is a front view

FIG. 3 is a horizontal sectional view

4A is an enlarged partial cross-sectional side view of a main part, and FIG. 4B is an enlarged front view of a main part.

FIG. 5 is a longitudinal sectional view showing a second embodiment.

FIG. 6 is a front view showing a second embodiment.

7A is an enlarged plan view of a main part, and FIG. 7B is an enlarged partial cross-sectional front view of the main part.

FIG. 8 is a longitudinal sectional view showing a third embodiment.

FIG. 9 is an enlarged partial cross-sectional side view of a main part.

FIG. 10 is a longitudinal sectional view showing a fourth embodiment.

FIG. 11 is a front view showing a fourth embodiment.

12A and 12B show a fifth embodiment, wherein FIG. 12A is an exploded view of a main part, and FIG. 12B is a longitudinal sectional view of a main part.

FIG. 13 is an enlarged partial cross-sectional side view of a main part showing a sixth embodiment.

FIG. 14 is a longitudinal sectional view of a main part showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Flow path 2 Liquid receiving part 3 Nozzle main body 4 Pipe 4a Flow path forming body 4b Curved part 4c Opening 4d Connecting part (connecting member) 4e Bent part 4f Both ends 7 Flow path outlet 8 Connection wall surface Y flow Road axis

Claims (10)

[Claims] 1. An atomizing nozzle for colliding and spraying an injection liquid ejected from a flow path for injecting only an injection liquid, wherein a plurality of the flow paths are configured to discharge the injection liquid from each of them. An atomizing nozzle provided in a state where the jet direction is determined so as to collide with each other and atomize. 2. A plurality of the flow paths are arranged so that their flow path axes intersect each other at a flow path exit side, and the flow path wall surfaces of the flow paths are integrally formed at the flow path exit side. The atomizing nozzle according to claim 1, wherein the connection wall surface to be connected is provided so as to partially surround an intersection between the flow path shaft cores. 3. A nozzle body having a liquid receiving part, wherein a plurality of flow path forming members forming the flow path are connected so that liquid is supplied from the liquid receiving part to the flow path. 3. The atomizing nozzle according to 1 or 2. 4. The atomizing nozzle according to claim 3, wherein the end portions of the plurality of flow path forming members are connected to each other by a connecting portion. 5. The connecting portion is provided with a hollow connecting member for detachably connecting the tip portions of a plurality of flow path forming members, and the atomized liquid particles are formed on the peripheral wall of the connecting member. The atomizing nozzle according to claim 4, wherein an opening for scattering is formed. 6. An opening for connecting a pipe to the nozzle body so that liquid from the liquid receiving portion flows into each of both ends of the pipe, and an opening for dispersing atomized liquid particles on a pipe wall of the pipe. Is formed, and each of the pipe portions at the position sandwiching the opening from the pipe axis direction is
The atomizing nozzle according to claim 4, wherein the tip portions are formed in a flow path forming body connected to each other by a connecting portion. 7. The atomizing nozzle according to claim 6, wherein the opening is formed in a tube wall of a bent or curved portion of the tube. 8. The atomizing nozzle according to claim 7, wherein the opening is formed in an outer peripheral tube wall portion of the tube wall of the bent or curved portion. 9. The atomizing nozzle according to claim 6, wherein the tube is bent in a U-shape, a C-shape, or a partial arc shape along a plane. 10. The atomizing nozzle according to claim 5, wherein the opening is arranged so as not to face the nozzle body.