JP3730075B2 - Negative ion generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a negative ion generator that generates negative ions in the air by utilizing the Leonard effect (the soot effect).
[0002]
[Prior art]
In recent years, the use of air ions has attracted attention as a further added value as well as the purification of indoor air as health-consciousness increases. Air ions clearly have an impact on the efficiency and emotions of our work. In particular, negative ions are said to have the effect of stabilizing the mind and enhancing the function of the respiratory organs.
[0003]
When water drops break up in the air, more precisely, when water drops collide with a metal plate that is a barrier and break up into fine water drops, negative ions are generated in the nearby air, and the fine water drops are equivalent to negative ions. Get a positive charge. This phenomenon has long been known as the Leonard effect. Later, it was confirmed by Simpson that a similar effect to Leonard could occur just by splitting the water droplets in the air.
[0004]
A device for generating negative ions in the air using the Leonard effect is described in, for example, Japanese Patent Publication No. 5-587555 (Prior Example 1), and such a negative ion generator is used for general homes or offices. For example, Japanese Unexamined Utility Model Publication No. 4-126717 (Prior Art 2) discloses an air cleaner.
[0005]
FIG. 7 shows the configuration of the prior example 2. In FIG. 7, the negative ion generator using the Leonard effect is basically a combination of a water splitting unit 101, a gas-liquid separation unit 102, and a water tank 103. The water in the water tank 103 is pumped out by the pump 104 and supplied to the water splitting unit 101, and is ejected at a high pressure from the nozzle 105 of the water splitting unit 101. To generate negative ions in the air.
[0006]
On the other hand, the outside air sucked from the blower 107 is blown into the water splitting unit 101, and fine water droplets containing negative ions generated in the water splitting unit 101 are blown to the gas-liquid separation unit 102 by the swirling flow of air, In the gas-liquid separator 102, while rising while swirling, the liquid-liquid separation is performed under the action of centrifugal force generated by the swirling flow, water droplets are returned to the water tank 103, and air containing negative ions is supplied to the air supply port. The air is sent from 108 to the outside air.
[0007]
The basic configuration of a large-sized negative ion generator used in a clean room or the like is exactly the same. In a small negative ion generator, a water splitting unit, a gas-liquid separation unit, and a water tank are assembled together, whereas in a large negative ion generator, a water injection tower that serves as a water splitting unit, A cyclone tower serving as a liquid separation unit is connected by a pipe, and a blower and a water jet tower are connected by a duct.
[0008]
The water tank is a water supply source to be supplied to the water splitting section, and is used to collect and circulate most of the excess water supplied to the water splitting section and water droplets separated by the gas-liquid separation section. In particular, since most of the water supplied to the water splitting section needs to be recovered as circulating water, the water tank communicates with the water splitting section, and a certain amount of circulating water is stored in the water splitting section.
[0009]
[Problems to be solved by the invention]
When the air volume is increased with the above configuration, the water level of the circulating water accumulated in the water splitting part rotates under the influence of the swirling flow of the air blown into the water injection tower, and its rotational motion In addition to causing vibration and undulation, this causes not only noise generation, but also the circulating water in the water splitting part is wound up by the swirling flow of air, and the rolled up water becomes large droplets of gas and liquid There is a possibility that the air is blown into the separation unit and blown out into the outside air from the air supply port without being subjected to the gas-liquid separation process.
[0010]
The water in the aquarium is pumped from the aquarium and supplied to the water splitting unit, where it comes into contact with the air sucked from the outside of the device and is returned to the water tank again for repeated use. Therefore, dust, bacteria, filamentous fungi, spores and the like contained in the air are taken into the circulating water in the water tank.
[0011]
Therefore, when large water droplets are blown out of the apparatus without being processed by the gas-liquid separator, these dust, bacteria, filamentous fungi, spores, etc. contained in the circulating water are also blown out of the apparatus together with the water drops. There is a fear.
[0012]
In the negative ion generator, the water in the aquarium is replaced by measures such as overflow and drainage. Dust, bacteria, filamentous fungi, spores, etc. in the aquarium are replaced by water overflow and drainage in the aquarium. It should be removed from the aquarium and the circulating water should not be released directly into the outside air as water droplets.
[0013]
An object of the present invention is to provide a negative ion generation device that prevents the circulating water from being rolled up in the water splitting section due to the swirling flow of air and prevents the circulating water from being discharged outside the device as large droplets. .
[0015]
[Means for Solving the Problems]
In order to solve the above-mentioned object, in the negative ion generator according to the present invention, there is a wave holding means, which pumps out water in the water tank, feeds the pumped water to the water splitting section, and fine water droplets in the water splitting section. A negative ion generator that blows air to the gas-liquid separator and separates fine water droplets to generate negative ions in the air. suppressing the rippling of the reservoir was canals of water is intended to prevent the scattering of water drops from the water surface, the water splitting portion includes a air passage portion, is divided into a waterway portion of the lower air passage portion This is the part that splits the water pumped out of the water tank into fine water droplets in the swirling flow of air sucked from the outside of the device, and the water channel part accepts and receives the water supplied into the air channel part water is a portion for circulating back to the aquarium, circulation water is accumulated, the Standing pressing means includes a air passage portion, a negative ion generator which can be isolated between waterway section is obtained.
[0016]
The water splitting section is divided into an air passage section and a water passage section below the air passage section, and the air passage section draws water pumped out of the water tank in the swirling flow of air sucked from the outside of the apparatus. It is a part that splits into fine water droplets, the water channel part is a part that circulates the water supplied in the air channel part back to the receiving water tank, where the circulating water is stored, and the undulating pressing means is inserted into the water channel part, A negative ion generator capable of forming a weir that prevents rotation of the water surface of the circulating water stored in the bottom is obtained.
[0017]
Further, a negative ion generator having a blower, a water jet tower, a cyclone tower, and a shielding plate, the blower sends air sucked from outside the device to the water jet tower, The water jet tower forms a water splitting section, and has an air passage portion and a water passage portion, and the air passage portion causes the inside to flow while swirling the air sent from the blower, and during the swirling flow of the air The water pumped out of the water tank is jetted from the nozzle, collides with the inner surface of the water jet tower, breaks up into fine water droplets, and generates negative ions in the air. The excess water is returned to the water tank as circulating water, and a certain amount of circulating water is stored.The cyclone tower forms a gas-liquid separation part, which separates the air sent from the water jet tower into gas and liquid, Air containing ions is sent out of the device, and the separated water is returned to the water tank. The shielding plate is a undulating pressing means that floats on the surface of the circulating water stored in the water channel of the water jet tower and isolates the surface of the circulating water from the swirling flow of air flowing in the water jet tower. The negative ion generator which can be obtained is obtained.
[0018]
Moreover, it is a negative ion generator having a blower, a water jet tower, a cyclone tower, and a swirl prevention plate, and the blower sends air sucked from outside the device to the water jet tower. The water injection tower forms a water splitting part, and has an air passage part and a water passage part. The air passage part causes the air to flow while turning the air sent from the blower. The water pumped out from the water tank is injected from the nozzle, collides with the inner surface of the water injection tower, breaks up into fine water droplets, and generates negative ions in the air. The excess water is returned to the water tank as circulating water, a certain amount of circulating water is stored, the cyclone tower forms a gas-liquid separation part, gas-liquid separation of the air sent from the water jet tower, Air containing negative ions is sent out of the device, and the separated water is returned to the water tank. The anti-swivel plate is a undulating pressing means, and is combined radially with a posture in which the flat plates stand vertically, and the upper portions of the flat plates protrude upward from the water surface of the circulating water and are held in place to maintain the water channel portion. Thus, a negative ion generator that can prevent rotation of the water surface due to the swirling flow of air that is inserted into the circulating water and acts on the water surface of the circulating water is obtained.
[0019]
It also has a shield / swirl prevention plate, which is a combination of the shield plate and the anti-swivel plate, which isolates the water channel from the air channel and at the same time prevents rotational movement of the circulating water in the water channel. A negative ion generator that can be obtained is obtained.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention has a wave holding means, pumps out water in the water tank, feeds the pumped water to the water splitting section, splits it into fine water droplets in the water splitting section, and A negative ion generator that blows air to a liquid separation unit to separate fine water droplets and generates negative ions in the air, and the undulation presser means water that is stored in the bottom of the water splitting unit through the water tank. It has the effect of suppressing swells and preventing splashes of water droplets from the surface of the water . The water splitting part is divided into an air channel part and a water channel part below the air channel part. The water pumped from the inside is a part that splits into fine water droplets in the swirling flow of air sucked from the outside of the device. The water channel part receives the water supplied into the air channel part, and the received water is a tank It is the part that is circulated back to the water, where the circulating water is stored, and the air passage part , Inter waterway section, by waving pressing means, can be substantially isolated.
[0022]
In the invention described in claim 2 , the water splitting section is partitioned into an air passage section and a water passage section below the air passage section, and the air passage section draws water pumped out of the water tank from the outside of the apparatus. This is the part that splits into fine water droplets in the swirling flow of the sucked air, and the water channel part is the part that receives the water supplied in the air channel part and circulates it back to the water tank. The means is formed into a weir that is inserted into the water channel portion and prevents the rotational movement of the water surface of the circulating water stored at the bottom, and has the effect of preventing the splashing of water droplets from the water surface by the wave holding means.
[0023]
The invention according to claim 3 is a negative ion generator having a blower, a water jet tower, a cyclone tower, and a shielding plate, wherein the blower takes in air sucked from outside the water jet tower. The water jet tower forms a water splitting part, and has an air channel part and a water channel part, and the air channel part flows inside while swirling the air sent from the blower, The water pumped out of the water tank during the swirling flow of the air is injected from the nozzle, collides with the inner surface of the water injection tower, breaks up into fine water droplets, and generates negative ions in the air. The surplus water generated in the air passage part is returned to the water tank as circulating water, and a certain amount of circulating water is stored, and the cyclone tower forms a gas-liquid separation part, and the air fed from the water jet tower Gas-liquid separation, and air containing negative ions is sent to the outside of the device. Is to return to the water tank, and the shielding plate is a squeezing and holding means, floats on the surface of the circulating water stored in the water channel of the water jet tower, and the circulating water from the swirling flow of air flowing in the water jet tower It has the effect of isolating the water surface.
[0024]
The invention described in claim 4 is a negative ion generator having a blower, a water jet tower, a cyclone tower and a swirl prevention plate, wherein the blower takes in air sucked from outside the device. The water injection tower forms a water splitting part, and has an air channel part and a water channel part, and the air channel part flows the inside while swirling the air sent from the blower. The water pumped out of the water tank during the swirling flow of the air is injected from the nozzle, collides with the inner surface of the water injection tower, splits into fine water droplets, and generates negative ions in the air. Is a part that returns excess water generated in the air passage part to the water tank as circulating water, and a certain amount of circulating water is stored, and the cyclone tower forms a gas-liquid separation part and is fed from the water injection tower Air is separated into gas and liquid, and air containing negative ions is sent to the outside of the device for separation. The anti-swivel plate is a squeezing and holding means, and the plates are combined radially in a vertical position, with the top of each plate protruding upward from the surface of the circulating water and held in place. Then, the rotation of the water surface due to the swirling flow of air that is inserted into the circulating water in the water channel and acts on the water surface of the circulating water can be prevented.
[0025]
Further, the invention according to claim 5 has a shielding / swirl prevention plate that is a combination of a shielding plate and a swirl prevention plate, and isolates the water channel portion from the air channel portion, and at the same time, rotational movement of the circulating water in the water channel portion. It has an action that can be prevented.
[0026]
【Example】
(Example 1)
Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, the negative ion generator is a combination of a water splitting unit 101, a blower 107, a gas-liquid separation unit 102, and a water tank 103.
[0027]
The water splitting unit 101 is a part that jets water pumped up from the water tank 103 and splits it into fine water droplets. In this embodiment, the water jet tower 1 includes a number of nozzles 105 that jet water. A water injection pipe 2 is provided, and the water injection pipe 2 is connected to the water tank 103 via a pump 104.
[0028]
That is, the water injection tower 1 forms the water splitting part 101 and is composed of an inner and outer double cylinder, the outer cylinder 3 is connected to the blower 107, and the inner cylinder 4 is connected to the cyclone tower 5. The blower 107 sucks outside air from the outside of the apparatus and blows it into the water jet tower 1 to form a swirling flow of air in the water jet tower 1 and blows it to the cyclone tower 5. The duct 6 connected to is communicated with the upper part of the outer cylinder 3 of the water jet tower 1.
[0029]
The cyclone tower 5 forms the gas-liquid separation unit 102, receives fine water droplets generated in the water splitting unit 101 together with the swirling flow of air, and performs gas-liquid separation by the centrifugal force action generated by the swirling of air, Air containing negative ions generated by the splitting of water droplets is discharged outside the apparatus.
[0030]
In this embodiment, the cyclone tower 5 and the inner cylinder 4 of the water jet tower 1 are connected by a duct 6. The inner cylinder 4 is piped up and down at the center part of the outer cylinder 3 of the water injection tower 1 and has a header 7 projecting in the circumferential direction. The water injection pipe 2 is erected upward to form a header 7 Are arranged concentrically, and a large number of nozzles 105 are installed toward the inner surface of the outer cylinder 3.
[0031]
In addition, the lower end opening position of the inner cylinder 4 is set to a height at which water droplets ejected from the nozzle 105 do not enter directly. The water tank 103 is a tank that is filled with water to be supplied to the water injection pipe 2. The water tank 103 is provided with an overflow port 8, and is constantly supplied with water from a water supply port (not shown) to maintain a constant water level. Yes. In the water tank 103, the excess water generated in the water injection tower 1 and the water separated in the cyclone tower 5 are recovered.
[0032]
The water tank 103 and the bottom of the cyclone tower 5 are connected by a drain 9, and the water tank 103 and the water injection tower 1 communicate with each other through a pipe 10. For this reason, the water filled in the water tank 103 circulates in the apparatus, and a part of the circulating water flows into the water jet tower 1 and is stored therein.
[0033]
As a result, the upper part of the water jet tower 1 becomes the upper air passage part 11 for allowing air to flow, and the lower fixed range is filled with the circulating water to become the water passage part 12, that is, the water splitting part 101 It is divided into a channel portion 11 and a water channel portion 12.
[0034]
In this embodiment, the air sucked from the outside of the apparatus by driving the blower 107 descends while swirling along the inner surface of the outer cylinder 3 of the water jet tower 1 from the suction port 13 of the water jet pipe 2. On the other hand, the water in the water tank 103 is pumped out by the pump 104, injected from each nozzle 105 of the water injection pipe 2, collides with the inner surface of the outer cylinder 3, breaks up into fine water droplets, and the outer cylinder of the water injection tower 1. It comes into contact with the air flow descending while turning inside, and negative ions are generated in the air. Most of the water droplets ejected from the nozzle 105 travel along the inner surface of the outer cylinder as they are, fall into the water channel portion 12, are returned to the water tank 103, and are circulated for use.
[0035]
The negative ions generated in the water splitting part 101 are put on a swirling flow of air together with fine water droplets, reversed at the water surface of the water channel part 12 and flowed into the inner cylinder 4 and further fed into the cyclone tower 5, where the cyclone tower The fine water droplets in the swirling air and the fine dust contained in the air are separated by the centrifugal force due to the centrifugal force effected while swirling while descending the inside of the water 5, and the water droplets together with the dust are the inner walls of the cyclone tower 5. Then, the clean air containing negative ions is reversed and raised and discharged from the air supply port 108 of the cyclone tower 5 to the outside of the apparatus.
[0036]
In this embodiment, a swirling flow of air that descends the air passage portion 11 and reversely rises into the inner cylinder 4 is blown to the water surface WL of the circulating water accumulated in the water passage portion 12. In the present invention, the squeezing means 14 is installed on the water surface WL of the circulating water on which the swirling flow of air acts to prevent the water surface WL of the water channel portion 12 from wavy due to the swirling flow of air.
[0037]
In FIG. 2, in this embodiment, a disc-shaped shielding plate 15 is used as the undulating pressing means 14, and the shielding plate 15 is floated on the water surface WL of the water channel portion 12 to substantially connect the air channel portion 11 and the water channel portion 12. Isolated. Although the shielding plate 15 is not only floated on the water surface WL, it is considered that it should be above the circulating water accumulated at the bottom of the water splitting portion 101 and substantially isolate the air passage portion 11 and the water passage portion 12 from each other. When the distance between the bottom of the inner cylinder 4 of the water injection tower 1 and the shielding plate 15 is shortened, the pressure loss of the air inside the water injection tower 1 increases correspondingly, and the air supply port 108 of the cyclone tower 5 increases. The amount of air blown out, that is, the air volume of the negative ion generator is reduced.
[0038]
On the contrary, if the distance between the opening edge of the inner cylinder 4 of the water injection tower 1 and the shielding plate 15 is increased, the height of the water injection tower 1 is increased correspondingly, and the apparatus is increased in size, which increases the cost. Furthermore, turbulent flow occurs between the bottom surface of the inner cylinder 4 of the water jet tower 1 and the shielding plate 15, and the pressure loss inside the water splitting portion 101 is increased. For this reason, the distance between the lower end of the inner cylinder 4 of the water jet tower 1 and the shielding plate 15, that is, the distance between the water level WL of the circulating water accumulated in the lower part of the water jet tower 1 and the inner cylinder 4 of the water jet tower 1. Is preferably about 100 to 150 mm when the internal pressure of the water jet tower 1 is 0.005 kgf / cm ² .
[0039]
The shielding plate 15 desirably covers the surface of the circulating water accumulated in the water channel portion 12 as much as possible in order to reduce the influence of the air swirling flow of the air channel portion 11 on the water channel portion 12. When the circulation of the circulating water between the water channel portions 12 is hindered, the circulating water jetted from the nozzle 105 cannot be received by the water channel portion 12 and guided to the water tank 103. For this reason, it is necessary to ensure a gap between the shielding plate 15 and the inner surface of the outer cylinder 3 of the water jet tower 1 so that the circulation of the circulating water is not hindered.
[0040]
The circulating water jetted from the nozzle 105 passes through this gap, is guided to the water channel section 12, and is returned to the water tank 103. With this configuration, in this embodiment, the swirling flow of the air blown from the blower 107 into the water splitting unit 101 descends in the outer cylinder 3 and collides with the shielding plate 15 and rises in the reverse direction. , The influence on the circulating water is blocked by the shielding plate 15, and the water surface WL of the circulating water does not ripple, so that water droplets do not scatter.
[0041]
As described above, in the embodiment, a disk-shaped plate is used as the shielding plate 15. Alternatively, the shielding plate 15a may have a conical shape with the center of the disk protruding as shown in FIG. If a conical disk is used for the undulating pressing means 14, the circulating water dropped from the nozzle 105 can be guided to the water channel portion 12 by being guided by the conical slope 16.
[0042]
Or conversely, as shown in FIG. 4, the same effect can be obtained by using a shielding plate 15 b having a conical shape with a depressed center and having a hole 17 at the center.
[0043]
In the above-described embodiment, the air channel portion 11 partitioned in the water injection tower 1 which is the water splitting portion 101 and the water channel portion 12 are separated by the undulating pressing means 14, thereby circulating water in the water channel portion 12. Although it is an example which prevents the ripple of the water surface WL, in order to prevent the ripple of the water surface WL of the water channel part 12, it is not necessary to isolate the air channel part 11 from the water channel part 12, and the swirling flow of air is the water channel part. Even if it acts on the twelve water surfaces WL, if the rotational motion of the water surface WL can be substantially suppressed, the water surface can be prevented from being rippled and vibrations can be eliminated.
[0044]
(Example 2)
FIG. 5 shows an example in which the anti-rotation plate 18 is used for the wavy presser means 14. As shown in FIG. 5 (b), the anti-swivel plate 18 is a combination of radial plates (crosses) in a posture in which the flat plate 19 stands vertically. As shown in FIG. 5A, the swirl prevention plate 18 is inserted into the circulating water of the water channel portion 12 of the water jet tower 1, and the upper part of each flat plate 19 is protruded from the water surface WL of the circulating water to the air channel portion 11 and fixed. When fixed and held at the position, the swirl prevention plate 18 is disposed at a position passing through the center of the water jet tower 1 and in contact with the inner surface of the outer cylinder 3, and the water level WL of the circulating water in the water channel 12 is the air channel. 11, but even if the swirling flow of the air flowing in the air passage portion 11 acts on the water surface WL of the water passage portion 12, the plate surface of the flat plate 19 becomes a weir to prevent the rotational movement of the water surface WL, Therefore, no undulations occur and no vibration noise is generated.
[0045]
In this embodiment, the anti-rotation plate 18 is a combination of cross plates, but may be a flat plate or a combination of a plurality of plates.
[0046]
(Example 3)
FIGS. 6A and 6B are examples in which a shielding / turning prevention plate 20 in which a shielding plate 15 is further attached to the upper end of the turning prevention plate 18 is used as the undulation pressing means. According to this example, the air passage portion 11 and the water passage portion 12 are isolated by the shielding plate 15, and further, the rotational movement of the circulating water accumulated in the water passage portion 12 is suppressed by the anti-rotation plate 18, Even if the water surface of the circulating water in the water channel portion 12 is exposed to the swirl prevention plate 18 and the water droplets are scattered, the amount of water droplets hits the back surface of the shielding plate 15 and greatly jumps out to the air channel portion 11 again. Therefore, it is possible to more completely suppress the ripple of the water surface WL.
[0047]
【The invention's effect】
As described above, according to the present invention, in order to suppress the ripple of water in the water channel portion that is stored in the bottom of the water splitting portion through the water tank, and prevents the splashing of water droplets from the water surface, the gas-liquid separation unit is used. As a result, it is possible to suppress scattering of large water droplets to the outside of the device, and to suppress the occurrence of vibration or noise of the entire apparatus due to the rotational motion and undulation of the water surface.
[Brief description of the drawings]
1A is a cross-sectional view showing a negative ion generator according to a first embodiment of the present invention, FIG. 1B is a cross-sectional plan view of a main part, and FIG. 2 is a water jet tower to which a shielding plate is applied. FIG. 3 is a view showing another embodiment of the shielding plate. FIG. 4 is a view showing still another embodiment of the shielding plate. FIG. 5A is a second embodiment of the present invention. FIG. 6 (b) is a view showing a swirl prevention plate, and FIG. 6 (a) shows a water injection tower of the negative ion generator according to the third embodiment of the present invention. The figure (b) which shows is a figure which shows a rotation prevention board. FIG. 7 is a figure which shows an example of the conventional negative ion generator.
DESCRIPTION OF SYMBOLS 1 Water injection tower 5 Cyclone tower 11 Air path part 12 Water path part 14 Wave holding means 15 Shielding board 18 Rotation prevention board 20 Shielding / swirl prevention board 101 Water split part 102 Gas-liquid separation part 103 Water tank 105 Nozzle 107 Blower

Claims (5)

It has a water splitting part that splits the water pumped out of the water tank into fine water droplets, and a gas-liquid separation part that separates the fine water droplets blown from the water splitting part from the air. In the negative ion generator for generating negative ions in the air, it is provided with a wave holding means for preventing water droplets from splashing from the water surface by suppressing the wave of water accumulated in the bottom of the water splitting part through the water tank. the water splitting unit includes a air passage portion is a portion to be split into fine drops of water pumped water from the water tank outside the sucked air stream of the apparatus, positioned below the air passage a portion for circulating back the water supplied to the air passage portion in the water tank is divided into a waterway section pooled a certain amount of circulating water, the waving pressing means, the said air passage negative characterized in that to isolate between water channel On generator. It has a water splitting part that splits the water pumped out of the water tank into fine water droplets, and a gas-liquid separation part that separates the fine water droplets blown from the water splitting part from the air. In the negative ion generator for generating negative ions in the air, it is provided with a wave holding means for preventing water droplets from splashing from the water surface by suppressing the wave of water accumulated in the bottom of the water splitting part through the water tank. the water splitting unit includes a air passage portion is a portion to be split into fine drops of water pumped water from the water tank in the air swirl flow sucked from outside the device, located below the air passage and, inserting the water supplied to the air path portion is a portion for circulating back to the water tank is divided into a waterway section pooled a certain amount of circulating water, the waving pressing means is in said water passage section Rotation of the water surface of the circulating water collected at the bottom Negative ion generator characterized in that to form a weir to prevent. It has a water splitting part that splits the water pumped out of the water tank into fine water droplets, and a gas-liquid separation part that separates the fine water droplets blown from the water splitting part from the air. In the negative ion generator for generating negative ions in the air, it is provided with a wave holding means for preventing water droplets from splashing from the water surface by suppressing the wave of water accumulated in the bottom of the water splitting part through the water tank. In the negative ion generator having a blower, a water jet tower, and a cyclone tower, the blower feeds air sucked from outside the device to the water jet tower, and the water jet tower is water. A split portion is formed and has an air passage portion and a water passage portion, and the air passage portion is pumped out of the water tank during the swirling flow of the air by turning the air fed from the blower while flowing inside. Water is jetted from the nozzle and the water jet The water channel portion is a portion that generates negative ions in the air by colliding with the inner surface of the water, and the water channel portion is a portion that returns excess water generated in the air channel portion to the water tank as circulating water. An amount of circulating water is accumulated, and the cyclone tower forms a gas-liquid separation section, gas-liquid separation is performed on the air sent from the water injection tower, and air containing negative ions is sent to the outside of the apparatus to separate the separated water. is configured to return to the water tank, the waving pressing means is floated on the water surface of the circulating water stored in the water channel section of the water injection tower, the circulating water from the swirling flow of the air flowing through the water injection tower negative ion generator comprising the shielding plate to isolate the water. It has a water splitting part that splits the water pumped out of the water tank into fine water droplets, and a gas-liquid separation part that separates the fine water droplets blown from the water splitting part from the air. In the negative ion generator for generating negative ions in the air, it is provided with a wave holding means for preventing water droplets from splashing from the water surface by suppressing the wave of water accumulated in the bottom of the water splitting part through the water tank. In the negative ion generator having a blower, a water jet tower, and a cyclone tower, the blower feeds air sucked from outside the device to the water jet tower, and the water jet tower is water. A split portion is formed and has an air passage portion and a water passage portion, and the air passage portion is pumped out of the water tank during the swirling flow of the air by turning the air fed from the blower while flowing inside. Water is jetted from the nozzle and the water jet The water channel portion is a portion that generates negative ions in the air by colliding with the inner surface of the water, and the water channel portion is a portion that returns excess water generated in the air channel portion to the water tank as circulating water. An amount of circulating water is accumulated, and the cyclone tower forms a gas-liquid separation section, gas-liquid separation is performed on the air sent from the water injection tower, and air containing negative ions is sent to the outside of the apparatus to separate the separated water. in the configuration back to the water tank, the turning preventing plate, the waving a pressing means, are combined radially posture made a flat plate vertically, is projected to the top of each flat plate from the water surface of the circulating water upwardly, position held plugged into circulation water of the water channel section, the negative ion generator you characterized in that to prevent rotation of the water due to the swirling flow of air acting on the water surface of the circulating water. Claim 3 or comprising the combination in which the shield and swing prevention plate and the shielding plate and the turning preventing plate for preventing rotational movement of the circulating water at the same time in the water channel when isolated from the air passage section of water channel 4. The negative ion generator according to 4 .

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