JPH10243995A - Negative ion generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate a large amount of negative ions in the air by permitting a water screen injected from a spray nozzle to collide against a flay surface wall provided with through-hole. SOLUTION: A nozzle of a type for forming a conical spray pattern and injecting the water screen (the conical water screen in the following) is used as the spray nozzle 9 and a clock 13 provided with a hole 14 on a flat surface is used as the wall. The opening diameter (diameter) of the hole 14 is smaller than that of a circle at a conical bottom. An inclined surface 14a inclining at about 45 deg. angle is formed in the opening edge of the hole 14 so as to permit the conical water screen to be brought into contact perpendicularly and the conical water screen injected from the spray nozzle 9 is adopted as a collision surface to be collided from a perpendicular direction. Therefore, a large part of the conical water screen injected from the spray nozzle 9 is made to collide with the inclined surface 14a given in the opening edge of the hole 14 on the wall 10, distributed to the inside and the outside of the conical spray pattern and divided into minute drops so as generate a large amount of negative ions in the air.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a negative ion generator for generating negative ions in the air using the Leonard effect (waterfall effect).

[0002]

2. Description of the Related Art When a water droplet splits in the air, more precisely, when the water droplet collides with a metal plate serving as a collision wall and splits, negative ions are generated in the air nearby, and the water droplets become negative ions. The phenomenon of obtaining the same amount of positive charge as the Leonard effect (Lenard effect)
d's effect).
This phenomenon is called the waterfall effect because negative electricity exists in the air near the waterfall.

A method of generating negative ions by utilizing the Leonard effect is described in, for example, Japanese Patent Publication No. 5-587555. In this method, fine water droplets are generated from water by a fine water droplet manufacturing machine, and the fine water
Air is blown at ５０50 m / sec to form fine water droplet mixed air, and then the fine water droplet mixed air is passed through a separator to separate fine water droplets having a particle size of at least 1 μm to form ultrafine water droplet mixed air. Super fine water drop mixed air 1m
^{In step 3} , negative ions are generated in an amount of 1.25 × 10 ⁹ or more. In this prior example, the fine water drop making machine is a water splitting section, and the separator is a gas-liquid separating section. In the water splitting unit, a device that jets water at high pressure and collides with the impingement wall, a device that jets water onto a rotating disk, applies centrifugal force to the jet water to split it into fine water droplets, and ultrasonic humidification A device that vibrates water to break it into fine water droplets or a device that sprays water onto a rotating impeller and hits the water with the impeller to break it into fine water droplets is used. A separator is used.

In the above-described apparatus, fine water droplets generated in a water splitting section are blown, and the fine water droplets are separated from air in a cyclone separator, which is a gas-liquid separating section, to remove air containing negative ions to the outside. Can be taken out.

[0005]

The amount of negative ions generated in the water splitting section is basically proportional to the amount of energy applied to water, but the amount of negative ions generated in water is limited within a limited capacity. There is naturally a limit in applying energy, and when an attempt is made to apply a large amount of energy, a sound is emitted, which causes noise. Some factors that reduce the amount of negative ions generated are known. For example, if a thick water film is formed on the collision surface, the amount of negative ions generated is small for the amount of energy applied to water.

Based on these findings, in order to effectively generate negative ions, a block having an isosceles triangle formed with concaves and convexes serving as grooves for drainage is formed on two surfaces sandwiching one ridge. The present inventors have proposed a device for jetting water toward the ridgeline and causing water to collide with the unevenness of the two surfaces to break up into fine water droplets. However, it has been found that when a spray nozzle having a certain kind of spray pattern is used, the jet water can be more effectively divided into fine water droplets by using a flat surface as the collision wall, and thus the amount of negative ions generated can be increased.

It is an object of the present invention to provide a negative ion generator for generating a large amount of negative ions in the air by colliding jet water on a flat surface.

[0008]

To achieve the above object, a negative ion generator according to the present invention is a negative ion generator having a combination of a spray nozzle and a collision wall, wherein the spray nozzle has a conical shape. The water wall is sprayed by forming a spray pattern in the shape of a circle. The impingement wall is a flat surface that collides with the water film sprayed from the spray nozzle. It has a hole that opens to the

[0009] The opening edge of the hole in the collision wall serves as a collision surface of the water sprayed from the spray nozzle.

The opening edge of the impingement plate is for dispersing the water jetted from the spray nozzle into and out of the conical spray pattern.

The hitting wall is a flat plate, having a hole in the plate surface,
The plate surface is arranged facing the spray nozzle.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 3, the negative ion generator comprises:
The case 1 includes a water splitting section 2, a gas-liquid separation section 3, and a water tank 4.

The water splitting section 2 splits the water supplied from the water tank 4 into fine water droplets, and blows air containing the fine water drops to the gas-liquid separating section 3. Part 2
The water tank 4 is a part that separates and removes water droplets in the received air and sends out humid air containing negative ions to the outside.
The water to be supplied to the water splitting section 2 has been charged. 5 in the figure
Is an air intake opening at the bottom of the case 1;
Is an air supply port opened on the upper surface of the case 1. An air flow passage 7 is provided between the air inlet 5 and the air inlet 6, and the air flow passage 7 has a blower 8. The water splitting unit 2 and the gas-liquid separation unit 3 are located downstream of the blower 8. These are formed in the air flow passage 7 respectively.

The water splitting section 2 includes a spray nozzle 9 and an impingement wall 1.
0 and the water supply line 1 leading to the spray nozzle 9
1 is connected to the inside of the water tank 4 via the pump 12.
A plurality of spray nozzles 9 are attached in parallel to a portion of a water supply pipe 11 arranged in a horizontal posture, with a spout facing downward, and a collision wall 10 is opposed to the spout of the spray nozzle 9. It is arranged below the spray nozzle 9.

In the present embodiment, a spray nozzle 9 is used which forms a conical spray pattern and sprays a water film (hereinafter referred to as a cone-shaped water film). A block 13 having 14 is used. A preferred spray nozzle 9 used in the apparatus of the present invention is a unit jet nozzle (tip exchange type spray nozzle) manufactured by Spraying System.

The spray nozzle 9 has a spray pattern and a flow rate that can be selected according to the type of the spray tip. The hollow cone spray tip includes a cone jet, a disk / core type, and a wide angle as shown in FIG. You can choose the type. The basic difference between the spray patterns shown in FIG. 4 is the difference in the central angle of the cone.

On the other hand, the block 13 used for the wall 10 is
The hole 14 may be a flat plate, and the hole 14 is opened through the block 13, and the opening diameter (diameter) of the hole 14 is
It is smaller than the diameter of the circle at the bottom of the cone formed by the cone-shaped water film. However, the diameter of the cone-shaped bottom circle formed by the cone-shaped water film is determined by the distance between the spray nozzle 9 and the collision wall 10, and the opening diameter of the hole 14 is such that the cone-shaped water film is formed. The smaller diameter of the bottom circle of the conical shape means that the cone-shaped water film jetted from the spray nozzle 9 collides with the opening edge of the hole 14 of the collision wall 10.

In FIG. 5, an inclined surface 14a which is inclined at an angle of about 45 ° is formed at the opening edge of the hole 14 of the hitting wall 10 so that the cone-shaped water film hits at a right angle. Is a collision surface that collides the cone-shaped water film sprayed from the spray nozzle 9 from a right angle direction. Therefore, most of the cone-shaped water film sprayed from the spray nozzle 9 collides with the inclined surface 14 a provided on the opening edge of the hole 14 of the collision wall 10, and is dispersed inside and outside the conical spray pattern to form fine water droplets. And produce a large amount of negative ions in the air.

A germicidal lamp unit 19 is mounted on a part of the water supply pipe 11 connecting the water tank 4 and the spray nozzle 9. The germicidal lamp unit 19 is shown in FIG.
As shown in the figure, a vertically long underwater germicidal lamp 23 is inserted into a pipe 22 having a water supply port 20 and a water supply port 21, and the germicidal lamp 23 is turned on. Ultraviolet rays are irradiated while flowing through the gap between the pipes 22 to remove various bacteria in the water, and sterilized water is sent from the water supply port 21 to the nozzle pipe 11a, and is sprayed from the spray nozzle 9 toward the wall. You. The humid air containing negative ions generated in the water splitting section 2 descends along the flow path 7 of the water splitting section 2, then turns back up the flow path 7 and turns upward.
It is introduced into the gas-liquid separation unit 3. Two or more baffles 15 are zigzagly arranged along the flow path 7 in the flow path 7 of the gas-liquid separation unit 3. The air received in the gas-liquid separation unit 3 is blocked by the baffle plate 1 while ascending in the flow passage 7 of the gas-liquid separation unit 3.
5, the baffle plate 15 captures fine water droplets contained in the air and removes them from the air.

Therefore, fine water droplets in the air are removed while the air passes through the gas-liquid separation section 3, and humid air containing negative ions is taken out from the air supply port 6 to the outside. Most of the water injected into the water splitting unit 2 and the water separated from the air in the gas-liquid separating unit 3 fall into the water tank 4 in the case 1 and are circulated.

In this embodiment, case 1
Is provided with a see-through window 16 so that the water splitting section 2 can be seen through the see-through window 16 from the outside. In FIG. 3, a see-through window 16 is formed in a part of the front panel 17 corresponding to at least the installation position of the collision wall 10 of the water splitting unit 2. The see-through window 16 is one in which a transparent plate such as a transparent glass or a transparent plastic is fitted into the opening of the panel 17. In order to express the image of the waterfall, it is preferable to form the see-through window 16 vertically long so that the hit wall 10 and a part of the space below the hit wall 10 can be seen through.

An illumination device 18 is provided in the case 1 to illuminate a state in which water jetted from the nozzle 9 collides with the impingement wall 10 and breaks into fine water droplets. Lighting equipment 1
LED, fluorescent lamp, incandescent lamp, EL, plasma light emission, etc. can be used for 8. As an illumination method, in addition to direct illumination by the illumination device 18, indirect illumination using an optical fiber or a prism can be used. it can. Since the water splitting portion 2 in the case 1 is a humid environment in which the water jetted from the nozzle 9 is scattered, the lighting device 18 needs to be waterproofed in the case of direct lighting. When performing indirect illumination using an optical fiber, the illuminating device 18 can be placed outside the air flow path 7 to expose the light emitting end of the optical fiber into the flow path in a humid environment. A germicidal lamp can be used as the lighting device.

In the present invention, when the spray pattern collides intensively with the jet water forming a cone-shaped water film on a plane perpendicular to the jet direction, the spray water is more negatively ionized than with a flat plane. It has been experimentally confirmed that the generation amount of negative ions is large. However, the opening amount of holes 14 penetrating through the collision wall 10 can significantly increase the generation amount of negative ions. Although the reason is not necessarily clear, since the inside of the cone-shaped water film of the spray pattern is opened to the outside air through the holes 14, it is possible to take out the negative ions generated in the cone-shaped water film into the outside air without annihilating them. It is thought that it is possible.

(Examples) Examples of the present invention will be described below.
Serious generator (CAM-3 pump pressure: 0.69 kg / cm ² (Spray nozzle (Holo cone spray tip manufactured by Spraying System Co., Ltd., 1 /
8A, AX) with 5 pieces), and the difference in the amount of negative ions caused by the difference of the collision wall when the distance between the collision wall and the spray nozzle was set to 25 mm was tested.

Types of impact walls (a) Flat plate, without holes (flat plate size 28 × 170 × 3 (mm)) (b) Flat plate, with holes (flat plate size 28 × 170 × 3 (mm) (C) Flat plate, with holes (plate size 28 × 170 × 3 (mm) Hole size 21 φmm, hole pitch matches nozzle pitch) (d) Equilateral triangular block (with 4mm pitch unevenness, AS molded product built into CAM-3)

Measurement of Ion Amount As shown in FIG. 7, a duct made of corrugated cardboard (85 × 170 × 500 mm) 24 was attached to the air supply hole of the true air generator (CAM-3), and an ion tester was placed 50 mm from the upper end opening. (Kobe Denki KST-900) 25 detection heads were pointed and detected, and the average value for 10 minutes was calculated.

Measurement of Air Volume As shown in FIG. 8, measurements were taken at five points (a to e) in the upper end opening of the cardboard duct 24, and the average value was calculated.

Measurement results Table 1 shows the measurement results.

[0030]

[Table 1]

As described above, it can be seen that the amount of negative ions generated is large when a flat plate is used for the collision wall, and the amount of generated negative ions is further increased by opening a hole in the collision surface. When the isosceles triangular block is used for the striking wall, the air volume is reduced because the outer dimensions are larger than when a flat plate is used, and thus, the flow of the wind is hindered. It is considered something.

[0032]

As described above, according to the present invention, a conical spray pattern is formed from a spray nozzle to spray a water film, and a flat surface is used for a collision wall against which the water film ejected from the spray nozzle collides. In addition, by opening a hole on the flat surface that opens the inside of the conical water film to the outside air,
A large amount of negative ions can be generated in the air by effectively dividing the sprayed water into fine water droplets, and when using two or more spray nozzles, the number of holes corresponding to the number of spray nozzles should be provided on the impingement wall Accordingly, a water film having a conical spray pattern can be sprayed from each spray nozzle to the opening edge of the corresponding hole to generate negative ions in the air.

Further, if a 45 ° inclined surface is provided on the opening edge of the hole, and the jetted water collides with the inclined surface, the generated fine water droplets can be dispersed inside and outside the conical spray pattern to generate negative ions. In either case, the generated negative ions can be blown out and taken out of the machine.

Also, by using a flat plate for the wall,
The size of the collision wall can be reduced, the flow of the wind for blowing the negative ions is not hindered, and the negative ions can be extracted to the outside through a strong airflow.

[Brief description of the drawings]

FIG. 1 is a perspective view of the device of the present invention.

FIG. 2 is a perspective view of the device of the present invention.

FIG. 3 is a partial sectional side view of FIG. 1;

FIG. 4 is a diagram showing a spray pattern.

FIG. 5 is a view showing an opening shape of a hole in a collision wall.

FIG. 6 is a detailed view of a water splitting unit.

FIG. 7 is a diagram showing an ion measurement procedure.

FIG. 8 is a diagram showing airflow measurement points.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Water splitting part 3 Gas-liquid separation part 4 Water tank 5 Air inlet 6 Air inlet 7 Air flow path 8 Blower 9 Spray nozzle 10 Shock wall 11 Water supply pipeline 11a Nozzle pipe 12 Pump 13 Block 14 Hole 14a Incline Surface 15 baffle plate 16 see-through window 17 front panel 18 lighting device 19 germicidal lamp unit 20 water supply port 21 water supply port 22 pipe 23 germicidal lamp 24 cardboard duct 25 ion tester

Claims (4)

[Claims] 1. A negative ion generator having a combination of a spray nozzle and an impingement wall, wherein the spray nozzle forms a conical spray pattern and sprays a water film. A negative ion generator characterized by having a flat surface on which a water film sprayed from a spray nozzle collides, wherein the flat surface has a hole that opens a conical water film to the outside air. 2. The negative ion generator according to claim 1, wherein an opening edge of the hole of the collision wall serves as a collision surface of water sprayed from a spray nozzle. 3. The negative ion generator according to claim 1, wherein the opening edge of the collision plate disperses the water jetted from the spray nozzle into and out of the conical spray pattern. 4. The method according to claim 1, wherein the collision wall is a flat plate, has a hole in the plate surface, and the plate surface is disposed to face the spray nozzle. The negative ion generator according to the above.