JP2602636Y2 - Nebulizer - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprayer capable of foaming and discharging a liquid.

[0002]

2. Description of the Related Art Conventionally, there are a large number of foaming sprayers, and an example thereof is a foaming sprayer described in Japanese Patent Publication No. 62-59635. The foaming sprayer, as shown in FIGS.
This is a trigger type sprayer provided with a nozzle hole 42 at a front portion of a sprayer main body 41, and a tubular body 43 surrounding the front of the nozzle hole is provided in front of the nozzle hole, and a plurality of tubular bodies 43 are provided from the inner surface of the tubular body 43. The rod-shaped wall 44 is projected, and the rod-shaped wall 44 is integrally connected at the center of the cylindrical body.

When the foam sprayer operates a trigger (not shown) to vortex the liquid from the nozzle hole 42 and eject it, the center of the spray flow is connected to the center connecting portion of the rod-shaped striking wall 44. Collision occurs, and part of the circumference of the spray flow
It collides with 44 and scatters. And the liquid scattered by the collision is
While being mixed with the spray flow that does not collide with the rod-shaped collision wall 44, it is mixed with the air sucked from the air inflow passage 45 to form bubbles and
Discharged from 46.

[0004]

The above-mentioned conventional foaming sprayer is an excellent foaming sprayer which can sufficiently foam and discharge the liquid to be jetted. However, since the foaming sprayer diffuses a liquid and discharges it as bubbles, it is almost impossible to discharge the liquid to a small area.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a sprayer capable of discharging bubbles so as to discharge liquid to a small area.

[0006]

In a trigger type sprayer, a spin mechanism is provided downstream of a liquid discharge path leading to a nozzle hole, and liquid can be atomized and ejected from the nozzle hole by high-speed rotation by passing the spin mechanism. The front of the nozzle hole 23 is surrounded by a foaming tube 31 coaxial with the nozzle hole, and an outside air inflow path 39 communicating with the rear portion of the tube is provided. A plurality of rod-shaped collision walls 36 project toward the front end, and the tip of the rod-shaped collision wall 36 is a wide part 37 wider than the base of the rod-shaped collision wall, and the wide part is a cylindrical body cross section. A wide through-hole portion 38 is formed between the front ends of the wide portions so as to have a length not reaching the axis of the cylindrical body.

[0007]

When the trigger 2 is pulled with normal strength in the state shown in FIGS. 1 and 2, the through hole 15, the first flow path 26, the second flow path A16, and the third
The pressurized liquid enters the rotation chamber 27 through the flow path 28,
Spouts from 23. As shown in FIG. 2, the third flow path 28 spirally connects the second flow path A16 and the rotation chamber 27 to form a spin mechanism, so that the third flow path 28 enters the rotation chamber 27 through the third flow path. The liquid spouts from the nozzle hole 23 while rotating clockwise at high speed in the illustrated example. The ejected liquid is atomized by the high-speed ejection, and each atomized droplet advances while drawing a spiral line whose diameter gradually increases by rotation, so that the entire atomized droplet becomes an inverse conical shape with a large diameter in front. Released. At this time, the outside air is sucked into the mist flow through the outside air suction passage 39, and the mist particles are subdivided.

[0008] The spray particles collide with the rod-shaped impact wall 36, in particular, in a large amount at the wide portion 37, change their direction, and further scatter. The scattered spray particles are mixed with the spray particles that do not collide with the rod-shaped collision wall 36, and are mixed with the outside air entering from the outside air inflow path 39 to form a foam and a space between the adjacent rod-shaped collision walls and a through hole. Squirted from part 38.

Next, when the trigger 2 is weakly pulled, the velocity of the liquid passing through the liquid jetting path naturally decreases, so that the third flow path 28
Since the number of rotations given by the passage also decreases, the nozzle hole
The liquid ejected from the nozzle 23 is also ejected at a low speed while maintaining a low rotation.Thus, without forming the above-mentioned inverted conical mist flow, the liquid passes through the through-hole portion 38 in a straight line shape, and is straightened in a small area. It is spouted as it is.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. First, a conventionally known part will be described. 1 is a sprayer main body, 2 is a trigger, and a plunger protruding forward from the inside of the cylinder retreats to pressurize the liquid in the cylinder by the trigger pulling operation. , Through a liquid discharge path with a discharge valve provided in the nozzle cap 21, and a top plate 22 of the nozzle cap.
Is ejected from the nozzle hole 23 of the nozzle. A spin mechanism described later is provided downstream of the liquid discharge path, and the discharged liquid is ejected while rotating at high speed by passing through the spin mechanism, and is atomized and ejected from the nozzle hole 23 by the high speed rotation. is there.

The front portion of the discharge path and the spin mechanism are configured as follows in the illustrated example. A rear portion of the joint pipe 11 is fitted to a front outer surface of a not-shown injection cylinder, and a columnar portion 13 is formed from a central portion of a partition plate 12 provided in a middle portion of the joint pipe.
Further, fitting cylinders 14 are respectively projected forward around the columnar portion, and a through hole 15 as a part of a liquid discharge path is formed in a partition plate portion between the columnar portion and the fitting cylinder 14. ing. A second flow path A16 is formed in both the upper and lower portions of the front outer surface of the cylindrical portion 13.

Reference numeral 21 denotes a nozzle cap rotatably fitted to a front outer surface of the joint pipe. The nozzle cap 21 has a nozzle hole 23 at the center of the top plate 22. The outer peripheral wall 24 projecting rearward is fitted to the outer surface of the fitting cylinder 14 described above, and from the intermediate portion between the nozzle hole and the outer peripheral wall, the outer peripheral wall 24 is fitted to the outer surface of the cylindrical portion 13 to move the flow path forming cylinder 25 backward. Projecting.
First flow paths 26, 26 are formed above and below the rear inner surface of the flow path forming cylinder, and the front end of the first flow path communicates with the above-described second flow path A16.

On the rear surface of the top plate portion surrounded by the flow path forming cylinder 25,
As shown in FIG. 2, a portion excluding the outer peripheral portion is a concave portion to form a rotating chamber 27, and a nozzle hole 23 is formed in a top plate portion at the center of the rotating chamber.
In addition, third flow paths 28, 28 for communicating the rotation chamber with the above-described second flow path A16 are formed in the outer peripheral portion of the rear surface of the top plate portion surrounded by the flow path forming cylinder 25 in a screw shape. are doing.

The third flow paths 28, 28 and the rotating chamber 27 form a spin mechanism, and pass through the through hole 15, the first flow path 26, and the second flow path A16 to form the third flow path. The liquid having entered into the rotary chamber 27 rotates at a high speed clockwise in FIG. 2 in the rotary chamber 27 by passing through a third flow path 28 formed in a screw shape. Sprays as fog from 23.

By turning the nozzle cap 21 with respect to the joint pipe, the communication between the first flow paths 26, 26 and the second flow paths A16, 16 is interrupted due to displacement, so that the liquid cannot be ejected. . In the illustrated example, as shown in FIG.
A second flow path B17 is formed on the side of the second flow path B16. The second flow path B has a deeper groove than the second flow path A16, and the inner edge of the front end thereof is slightly positioned in the rotation chamber 27. I have.

Thus, when the nozzle cap 21 is turned from the state shown in FIG. 2 to make the first flow path 26 and the second flow path B17 communicate with each other, a part of the liquid passing through these two flow paths becomes the third flow path 28. Therefore, the vehicle enters directly into the rotating chamber 27 without passing through, so that the rotating force in the rotating chamber can be reduced.

In the present invention, the top plate 22 of the nozzle cap is provided.
The foaming tube 31 was fitted to the inner surface of the front tube portion 29 projecting forward from the outer periphery. The cylinder is fitted to the inner surface of the front cylinder portion 29 from the outer periphery of the flange-shaped top plate 32 shown in FIG. 3 to project the outer cylinder 33, and the inner cylinder 34 shorter than the outer cylinder from the inner periphery to project rearward. A plurality of outside air suction holes 35 were formed in the flange-shaped top wall portion between the equal outer cylinder and the inner cylinder.

A plurality of rod-shaped striking walls 36 project from the inner periphery of the flange-shaped top plate 32 toward the axis of the inner cylinder 34, and the tip of the rod-shaped striking wall is formed as a wide portion 37 having a width wider than its base. The wide portions are disposed at appropriate intervals on the cross section of the inner cylinder 34, and the distal ends of the wide portions have a length that does not reach the axis of the inner cylinder as shown in FIG. A through hole 38 was formed.

The nozzle hole 23 and the inner cylinder 34 are coaxial, and the central axis of the mist flowing from the nozzle hole passes through the center of the through-hole portion 38. An outside air inflow path 39 is formed between the inner and outer cylinders 34 and 33 and between the rear end face of the inner cylinder 34 and the top plate 22 of the nozzle cap.

[0020]

According to the present invention, the front of the nozzle hole 23 is surrounded by a foaming tube 31 provided coaxially with the nozzle hole, and the end portions of a plurality of rod-shaped impact walls 36 provided on the inner surface of the foaming tube are formed as follows. The wide portion is arranged at an appropriate interval on the foaming tube cross section as a wide portion 37 wider than the base portion, and the tip of the wide portion is set as a length not reaching the axis of the foaming tube 31. A large through-hole-like portion 38 was formed between the tips.

Therefore, when the trigger 2 is weakly pulled, the speed of the liquid ejected from the nozzle hole 23 is reduced, and the ink is ejected while the rotation caused by the passage of the spin mechanism is reduced, the amount of the liquid ejected from the nozzle hole 23 is small. As it passes straight through the inside of the through-hole portion 38 centered on the extension of the axis of the nozzle hole, the liquid can be sprayed over a small area.

As described above, in order to allow the liquid to pass through the through-hole portion 38 without colliding with the rod-shaped impact wall 36, the through-hole portion 38 must be formed large. When the particles are caused to collide with the rod-shaped collision wall 36 and foamed, the number of spray particles that collide decreases, but in the present invention, the tip of the rod-shaped collision wall 36 is a wide part 37 wider than the base part, and Since the wide portions are provided at appropriate intervals on the cross section of the foaming cylinder 31, the above-mentioned through-hole-shaped portions 38 are provided.
In the case where the spray particles are foamed even if is formed large, a large amount of the spray particles can collide with the wide portion 37 and generate a large amount of bubbles.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part of an embodiment of the present invention, in which a head and a columnar portion are located at positions where a swirling flow can be ejected.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view of the tubular body according to the embodiment of the present invention;

FIG. 4 is a half sectional view of a cylindrical body according to an embodiment of the present invention;

FIG. 5 is a side view of the embodiment of the present invention;

FIG. 6 is a sectional view of a main part of a conventional example.

FIG. 7 is a front view of a main part of a conventional example.

[Explanation of symbols]

11 Fitting tube 12 Partition plate 13
Cylindrical part 16 Second flow path A 21 Nozzle cap 23
Nozzle hole 26 First flow path 27 Rotating chamber 28
3rd channel 31 Foaming cylinder 36 Rod-shaped wall 38
Through-hole part

Claims (1)

(57) [Scope of request for utility model registration] 1. A trigger type sprayer in which a spin mechanism is provided downstream of a liquid discharge path leading to a nozzle hole and liquid can be atomized and ejected from a nozzle hole by high-speed rotation by passing the spin mechanism. A front side is surrounded by a foaming cylinder 31 coaxial with the nozzle hole, and an outside air inflow path 39 communicating with the rear of the cylinder is provided. Also, a plurality of air passages are provided from the front inner surface of the foaming cylinder toward the axis of the foaming cylinder. The rod-shaped impact walls 36 are projected, and the distal end of the rod-shaped impact wall 36 is a wide portion 37 wider than the base of the rod-shaped impact wall, and the wide portions are appropriately spaced on the cross section of the cylindrical body. A sprayer characterized in that a wide through portion 38 is formed between the distal ends of the wide portions so that the distal ends of the wide portions do not reach the axis of the cylindrical body.