JP2022082422A - Ion generator - Google Patents

Abstract

To provide an ion generator that can suitably send ions and a small amount of ozone to a long distance.SOLUTION: An ion generator includes a fan 11 that sends air, a wind tunnel cylinder 23 which is a flow path for air sent from the fan 11, a plurality of needle electrodes 14 provided inside the wind tunnel cylinder 23 to which a voltage is applied, and a plate-shaped counter electrode 20 provided on the outlet side of the wind tunnel cylinder 23 and having a lower potential than the needle electrode 14, and the needle electrodes 14 are provided in parallel such that their respective needle tips 15 face the outlet side of the wind tunnel cylinder 23, and the counter electrode 20 is formed with a passage hole 21 through which air flows on an extension line of the needle electrode 14. As a result, the ions emitted from the ion generator and a small amount of ozone can be reached far away in a room without being attenuated.SELECTED DRAWING: Figure 2

Description

The present invention relates to an ion generator, and more particularly to an ion generator that supplies air containing ions and ozone generated by a high electric field by a needle electrode into a room by blowing air from a fan.

Conventionally, various ion generators that supply negative ions into the air are known.
For example, in Patent Document 1, a shaft flow fan composed of a plurality of blades and a central portion for supporting these blades radially in a casing, and a plurality of blades provided on the downstream side of the air flow generated by the shaft flow fan. Disclosed is a static eliminator comprising a discharge electrode and ejecting ions generated by the discharge electrode by an air flow.

Further, for example, Patent Document 2 describes a fan provided in the case for flowing air, a prefilter for removing impurities from the air flowing into the case, a needle electrode provided downstream of the fan for discharging, and a needle electrode. An ion generator having a counter electrode provided downstream of the above is disclosed.

One of the functions of this type of ion generator is the function as an air purifier. Particles such as dust and viruses in the air are charged by ions supplied from the ion generator and adhere to surrounding structures and the like by electrostatic force. As a result, dust and the like in the air are gradually removed.

Japanese Unexamined Patent Publication No. 2017-216174 Japanese Unexamined Patent Publication No. 2020-149961

However, the above-mentioned conventional ion generator has a point to be improved in order to improve the performance such as air purification by ions.

That is, in order to enhance the effect of air purification by ions, it is required to stably supply ions to the entire target room. However, in the above-mentioned conventional ion generator, it is difficult to send ions to a distant place, and it is difficult to supply ions to the entire room.

Specifically, first of all, there is a problem that ions adhere to the structure and are attenuated. That is, the ions sent out from the ion generator are adsorbed to structures such as floors, desks, and chairs by electrostatic force. As a result, the amount of ions in the air is rapidly attenuated at a distance of 1 to 2 m from the ion generator.

Secondly, there is a problem that the structure becomes a barrier to the progress of ions due to charging. That is, when the surrounding structure is charged, the movement route of ions is bent by the electrostatic force due to the charging voltage. In some cases, route changes that are closer to the reflection may occur. Further, for example, when the charge of the structure changes due to a change in temperature or humidity, the flow path of ions also changes. Therefore, the measured amount of ions varies greatly depending on the location, and a stable amount of ions cannot be obtained.

Further, as a third problem, there is a problem that the ions discharged from the ion generator repel each other and are dispersed. For example, the ions blown out from a plurality of discharge ports repel each other and spread away from the blowing direction. As a result, the ions cannot reach far in the blowing direction, and it is difficult to fill the entire room with the ions.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an ion generator capable of suitably sending ions and a trace amount of ozone to a distant place.

The ion generator of the present invention includes a fan that sends air, a wind tunnel cylinder that serves as a flow path for the air sent from the fan, and a plurality of needle electrodes provided inside the wind tunnel cylinder to which a voltage is applied. It is provided with a plate-shaped counter electrode provided on the outlet side of the wind tunnel cylinder and having a lower potential than the needle electrode, and the needle electrodes are parallel so that the respective needle tips are directed toward the outlet side of the wind tunnel cylinder. The counter electrode is characterized in that a passage hole through which the air flows is formed on an extension line of the needle electrode.

According to the ion generator of the present invention, a fan that sends air, a wind tunnel cylinder that serves as a flow path for air sent from the fan, a plurality of needle electrodes provided inside the wind tunnel cylinder to which a voltage is applied, and a wind tunnel. It is provided with a plate-shaped counter electrode provided on the outlet side of the cylinder and having a lower potential than the needle electrode, and the needle electrodes are provided in parallel so that the respective needle tips are directed toward the outlet side of the wind tunnel cylinder to counteract each other. The electrode has a passage hole through which air flows on the extension line of the needle electrode. As a result, the ions discharged from the ion generator and a small amount of ozone can be sent to a distant place in the room without being attenuated.

Specifically, since the plurality of needle electrodes are provided in parallel so that their respective needle tips are directed toward the outlet side of the wind tunnel cylinder, they extend substantially along the direction of the airflow sent from the fan. Therefore, the air resistance in the vicinity of the needle electrode is small, and the air sent from the fan can flow efficiently.

The counter electrode is formed with a passage hole through which air flows on the extension line of the needle electrode corresponding to each needle electrode. That is, by forming the passing holes in the counter electrodes, the plurality of needle electrodes and the plurality of passing holes are paired with each other, and a plurality of electrode portions opposed to the plurality of needle electrodes are formed. As a result, ions and a trace amount of ozone are suitably generated for each needle electrode and passage hole, together with a suitable air flow. Then, the increased amount of ions is sent out from the wind tunnel cylinder by a suitable air flow and reaches a distant place in the room.

Further, according to the ion generator of the present invention, the inner diameter of the wind tunnel cylinder is equal to or larger than the inner diameter of the fan casing covering the outer circumference of the fan, and the needle electrode is the wind tunnel cylinder. It may be evenly arranged on the circumference coaxial with the fan casing and having a diameter smaller than the inner diameter of the fan casing. As described above, by providing the wind tunnel cylinder having the same inner diameter as or larger than that of the fan casing, a suitable flow path having less air resistance is formed. By arranging the needle electrodes substantially evenly on the circumference, a suitable air flow can be obtained for each of the plurality of needle electrodes, and the positional relationship with the passing holes is good, and the shape of the counter electrode is also good. Efficient ion generation is realized.

Further, according to the ion generator of the present invention, the passage hole may be provided with a guide pipe for guiding the flow of the air flowing out from the passage hole. As a result, when air passes through the passage hole, unnecessary air resistance due to the Karman vortex can be reduced, and more efficiently, a strong flow can be concentrated and sent out in a beam shape.

Further, according to the ion generator of the present invention, the guide pipe may be provided so as to be inclined in the same circumferential direction of the wind tunnel cylinder and to be inclined in the radial direction of the wind tunnel cylinder. As a result, air can be efficiently blown out from the inclined guide pipe to generate a substantially spiral air flow. Therefore, the air containing ions can reach a distant place in the room.

It is a perspective view of the ion generator which concerns on embodiment of this invention. It is an exploded perspective view of the ion generator of the ion generator which concerns on embodiment of this invention. It is a front view of the vicinity of the needle electrode unit of the ion generator of the ion generator which concerns on embodiment of this invention. It is an exploded perspective view of the ion generator of the ion generator which concerns on embodiment of this invention. It is (A) perspective view and (B) plan view which shows the ion generator which concerns on embodiment of this invention. It is a perspective view which shows the back side of the ion generator which concerns on embodiment of this invention. It is a perspective view of the ion generator of the ion generator which concerns on other embodiment of this invention. It is (A) front view and (B) side view which show the vicinity of the guide pipe of the counter electrode of the ion generator which concerns on other embodiment of this invention.

Hereinafter, the ion generator according to the embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a perspective view showing a schematic configuration of an ion generator 1 according to an embodiment of the present invention, and is a view of the ion generator 1 viewed from diagonally upper left toward the front.

The ion generator 1 is a device that generates ions and a small amount of ozone and supplies them indoors. As shown in FIG. 1, the ion generator 1 has a main body casing 2 having a substantially rectangular parallelepiped shape. The main body casing 2 is formed of, for example, various sheet metal materials, synthetic resin materials, and the like.

Inside the main body casing 2, an ion generator 10 for generating ions, a high voltage generator 3 for applying a high voltage for generating ions to the ion generator 10, and a control device 4 for controlling the supply of ions are provided. , Are provided.

On the front surface of the main body casing 2, an discharge port 6 which is an opening for sending out air containing generated ions and a trace amount of ozone into the room is formed. Further, on the back surface of the main body casing 2, a suction port 5 which is an opening for sucking air for sending out ions and ozone is formed.

Although not shown, various display means such as a display and a light for displaying the operating status of the ion generator 1 and the indoor status may be provided on the front surface of the main body casing 2, for example. Further, for example, on the front surface of the main body casing 2, various input means such as a switch for the user to input an operation signal to the ion generator 1 may be provided.

FIG. 2 is an exploded perspective view showing a schematic configuration of the ion generator 10.
With reference to FIG. 2, the ion generator 10 includes a fan 11 for sending air, a wind tunnel cylinder 23 as an air flow path, a needle electrode unit 13 provided inside the wind tunnel cylinder 23, and a wind tunnel cylinder 23. It has a counter electrode 20 provided on the outlet side.

The fan 11 is a blower that sends air into the inside of the wind tunnel cylinder 23. For example, it is an axial flow blower that sends air in a substantially rotation axis direction. The fan 11 is provided inside a fan casing 12 having a substantially cylindrical shape. The fan casing 12 may have, for example, a bell mouth structure in which the diameter of the air blowing side is expanded.

The needle electrode unit 13 is provided downstream of the fan 11, that is, on the blowout side, and inside the wind tunnel cylinder 23. The needle electrode unit 13 has a plurality of needle electrodes 14 and a support portion 16 that supports the needle electrodes 14.

The support portion 16 has a substantially annular shape and supports a plurality of needle electrodes 14. The support portion 16 is formed of a metal plate material, a bar material, or the like, and has a diameter smaller than the inner diameter of the fan casing 12.

FIG. 3 is a front view showing a schematic configuration of the needle electrode unit 13.
With reference to FIGS. 2 and 3, the support portion 16 may have a plurality of coaxially formed ring portions. For example, the support portion 16 may have a large wheel portion 17 having a large diameter and a small wheel portion 18 having a small diameter, which are formed coaxially with the wind tunnel cylinder 23.

A plurality of needle electrodes 14 are provided on the large wheel portion 17 and the small wheel portion 18 of the support portion 16. The needle electrode 14 is a member to which a voltage is applied to generate ions and a small amount of ozone, and is connected to the high voltage generator 3 so as to be energized.

The needle electrode 14 has a substantially needle-like shape, and each needle tip portion 15 is provided in parallel so as to face the outlet side of the wind tunnel cylinder 23. In other words, the needle electrodes 14 are all provided in the same direction so as to extend along the rotation axis direction of the fan 11. With such an arrangement, the needle electrode 14 extends substantially along the direction of the airflow sent from the fan 11, and the air resistance in the vicinity of the needle electrode 14 is suppressed to be small.

It is desirable that the needle electrodes 14 are arranged substantially evenly as a whole, and the needle electrodes 14 are arranged and fixed at substantially equal angles to the large wheel portion 17 and the small wheel portion 18 of the support portion 16. More specifically, for example, in the large wheel portion 17, eight needle electrodes 14 are arranged at substantially uniform angles, that is, at intervals of about 45 degrees. In the small wheel portion 18, the four needle electrodes 14 are at substantially equal angles, that is, at intervals of about 90 degrees, and are offset by about 25.5 degrees with respect to the needle electrodes 14 arranged in the large wheel portion 17. It is placed at the right angle. By arranging the total of 12 needle electrodes 14 substantially evenly in this way, a suitable air flow can be obtained for each of the plurality of needle electrodes 14.

Although not shown, for example, 10 needle electrodes 14 are arranged at substantially uniform angles, that is, at intervals of about 36 degrees on the large wheel portion 17, and 5 needles are arranged on the small wheel portion 18. The electrodes 14 may be arranged at substantially uniform angles, that is, at intervals of about 72 degrees, and a total of 15 needle electrodes 14 may be provided. The number and arrangement of the needle electrodes 14 are not limited to the above, and other configurations may be used in which the needle electrodes 14 are arranged substantially evenly.

FIG. 4 is an exploded perspective view showing a schematic configuration of the ion generator 10.
With reference to FIG. 4, the wind tunnel cylinder 23 is a substantially cylindrical member formed of, for example, a sheet metal material, a synthetic resin material, or the like, and is fixed to a fan casing 12 to provide an air flow path sent from the fan 11. Form.

The wind tunnel cylinder 23 is provided substantially coaxially with the fan 11, and the inner diameter of the wind tunnel cylinder 23 is equal to or larger than the inner diameter of the fan casing 12 covering the outer periphery of the fan 11.

Specifically, it is desirable that the difference between the inner diameter of the wind tunnel cylinder 23 and the inner diameter of the fan casing 12 is 20 mm or less. As a result, by providing the wind tunnel cylinder 23 having the same inner diameter as or larger than that of the fan casing 12, it is possible to prevent phenomena that cause air resistance such as Karman vortices, and a suitable flow having less air resistance. A road is formed.

A counter electrode 20 is provided on the outlet side of the wind tunnel cylinder 23, that is, downstream of the needle electrode 14. The counter electrode 20 is connected to, for example, the ground 25, and has a lower potential than the needle electrode 14. The counter electrode 20 has a plate-like shape and is arranged so as to be substantially orthogonal to the axis of the wind tunnel cylinder 23.

The counter electrode 20 is formed with a passage hole 21 through which air flows on the extension line of the needle electrode 14. A plurality of passage holes 21 are formed in the plate-shaped counter electrodes 20, and are formed at positions corresponding to the plurality of needle electrodes 14 provided substantially evenly.

By forming the passing holes 21 in the counter electrode 20 in this way, the plurality of needle electrodes 14 and the plurality of passing holes 21 are paired with each other, and a plurality of electrode portions opposed to the plurality of needle electrodes 14 are formed. Will be done. As a result, ions and a trace amount of ozone are suitably generated for each needle electrode 14 and the passage hole 21.

The passage hole 21 is connected to the discharge port 6 shown in FIG. 1 and constitutes an outlet for sending out air containing generated ions and a trace amount of ozone into the room. With the configuration in which the plurality of needle electrodes 14 and the corresponding passage holes 21 are provided substantially evenly in this way, the ions discharged from the ion generator 1 and a small amount of ozone can be sent to a distant place in the room without being attenuated. ..

As described above with reference to FIGS. 1 to 4, the ion generator 1 according to the present embodiment exhibits a function that is difficult with the prior art to allow emitted ions and a trace amount of ozone to reach a long distance. do.

Specifically, the plurality of passage holes 21 serving as the discharge ports 6 are arranged substantially evenly in a substantially concentric circle as much as possible. As a result, the exhaust air flow 31, which is a substantially cylindrical strong flow, is formed. The exhaust air flow 31 has little lateral spread and reaches a distant place while the substantially beam-like flow is maintained in a certain direction.

By making the discharged air a linear strong airflow in this way, it overcomes the problems of the prior art, such as the attenuation caused by the adhesion of ions to the structure and the ion barrier caused by the charging of the structure. be able to.

Further, since the discharge port 6 is composed of a plurality of passage holes 21 arranged substantially evenly on a substantially circular cross section, the airflow from the discharge port 6 is formed in a substantially beam shape. As a result, the dispersion of the amount of ions due to the repulsion between the ions discharged from the plurality of ion discharge ports as in the prior art is suppressed, and the ions and a small amount of ozone can be reached far away without being attenuated.

Although not shown, the discharge port 6 may be provided with a plate-shaped cover member having a plurality of openings corresponding to the passage holes 21. The cover member is formed of, for example, a synthetic resin plate or the like, and is attached to the discharge port 6 of the main body casing 2. With such a configuration, contact from the outside of the ion generator 1 with respect to the counter electrode 20 and the like of the ion generator 10 inside the main body casing 2 without obstructing the suitable air blowout from the passage hole 21. Can be prevented. Therefore, an ion generator 1 that can efficiently send out air and is safe can be obtained.

The intake air flow 30 is sucked into the ion generator 10 by the rotation of the fan 11 which is larger than the outer circumference of the entire needle electrode group 14. The sucked air passes through the needle electrode unit 13 to which a high voltage is applied, and finally through the counter electrode 20 having a ground potential or a low potential equivalent to the ground, and finally an exhaust air flow containing ions and a trace amount of ozone. It is discharged as 31.

As described above, a plurality of needle electrodes 14 are connected to the needle electrode unit 13. The plurality of passage holes 21 of the counter electrode 20 are paired with each of the plurality of needle electrodes 14 and are formed substantially concentrically with the needle electrode 14. As a result, ions and a trace amount of ozone are generated by the pair of each needle electrode 14 and the passing hole 21.

The direction of the needle electrode 14 is substantially parallel to the rotation axis of the fan 11 in order to minimize air resistance. That is, the air flow in the vicinity of the needle electrode 14 is in a direction substantially equivalent to the air flow immediately after the fan 11. The fact that the plurality of needle electrodes 14 are provided at substantially equal intervals is a suitable configuration for increasing the amount of ions and ozone generated.

The inner diameter of the wind tunnel cylinder 23 is equal to or larger than the outer edge of the diameter of the fan casing 12 in order to smooth the flow of air at the connection portion with the fan 11 and prevent phenomena such as Karman vortices that cause air resistance. .. Specifically, the inner diameter of the wind tunnel cylinder 23 is at most the inner diameter of the fan casing 12 plus about 20 mm.

With such a structure, the flow of air discharged from the fan 11 is substantially equal to the flow in the fan casing 12, passes through the inside of the wind tunnel cylinder 23 without attenuation, and is approximately evenly spaced on the counter electrode 20. It is discharged into the room through the provided passage hole 21. The discharged air flow 31 is discharged from the passing hole 21 in the form of a substantially cylindrical beam, and reaches a distant place without being diffused.

That is, with such a structure, the air resistance inside the wind tunnel cylinder 23 is reduced to form a substantially cylindrical shape, and a substantially beam-shaped exhaust air flow 31 which is dense and in a substantially uniform state is efficiently produced. Can be blown out.

As a result, the average wind speed in the vicinity of the discharge port of the device in the prior art was about 0.4 m / sec, but the ion generator 1 according to the present embodiment can easily exceed 1 m / sec. rice field. Such a high wind speed and strong exhaust air flow 31 withstands the charging of surrounding structures such as chairs and desks and the suction when these structures are at the ground potential, and reaches a long distance. The exhaust air flow 31, which has a strong straightness and a high wind speed, can cause the ions to reach a distant place in a substantially beam-like flow before the ions repel each other and spread laterally in the traveling direction.

Further, the plurality of needle electrodes 14 are arranged at equidistant positions in the circumferential direction with the rotation axis of the fan 11 as the center, and have a structure that substantially evenly affects the passing air. In the above example, the needle electrodes 14 are arranged in a double substantially concentric circle. That is, eight pieces are arranged at equal intervals on the circumference of the large wheel portion 17 on the outer side at intervals of 45 degrees, and four pieces are arranged at equal intervals on the circumference of the small wheel portion 18 on the inner side at intervals of 90 degrees. , A total of 12 needle electrodes 14 are arranged. By arranging the plurality of needle electrodes 14 substantially uniformly in this way, the air flow passing through the inside of the wind tunnel cylinder 23 is constantly stabilized.

Further, the counter electrode 20 constitutes a part of the flow path through which air flows, but is formed so that the number of passing holes 21 per unit area is substantially equal in order to allow air to pass efficiently and substantially evenly. ing. In the above description, the number of needle electrodes 14 and passage holes 21 is 12, but the number of needle electrodes 14 and passage holes 21 is not limited to this. As long as the needle electrodes 14 and the passing holes 21 are arranged substantially evenly, the number of the needle electrodes 14 and the passing holes 21 may be, for example, 7, 15, or the like.

The inner diameter of the wind tunnel cylinder 23 is substantially equal to the outer diameter of the fan 11. That is, it is preferable that the inner diameter of the wind tunnel cylinder 23 is adjusted to a size such that there is no step in the flow of air discharged from the fan 11 and there is almost no air resistance.

Similarly, for the needle electrode unit 13, an appropriate substantially equal distance is provided so that the individual needle electrodes 14 do not disturb the air flow inside the wind tunnel cylinder 23 and do not weaken the flow strength. It is kept and arranged. As a result, it is possible to prevent the air from flowing unevenly to a part of the air, suppress the generation of a vortex, and reduce the air resistance.

The airflow discharged by the rotation of the fan 11 forms a vortex, and the wind flow in the vicinity of the outer peripheral portion of the fan 11 becomes strong. Therefore, depending on the shape of the fan 11, a large number of needle electrodes 14 may be arranged in the vicinity of the outer peripheral portion of the fan 11.

That is, the needle electrodes 14 may be arranged in a concentrated manner in the vicinity of the outer edge portion of the wind tunnel cylinder 23, rather than being arranged substantially evenly in the entire inside of the wind tunnel cylinder 23. It is effective to arrange a large number of needle electrodes 14 in the vicinity of the outer peripheral portion of the fan 11 in order to maintain the strength of the air flow and discharge the air with a small air resistance.

Specifically, when the wind flow on the center side of the wind tunnel cylinder 23 is small, the needle electrode 14 of the small wheel portion 18 on the center side is omitted, and the large wheel portion 17 near the inner peripheral surface of the wind tunnel cylinder 23 is omitted. The arrangement may be such that only the needle electrode 14 is used.

Further, in the configuration in which the needle electrodes 14 are provided on the large wheel portion 17 and the small wheel portion 18, the diameter of the small wheel portion 18 is increased to be closer to the large wheel portion 17, and all the needle electrodes 14 are located closer to the large wheel portion 17 than on the center side of the wind tunnel cylinder 23. It may be configured to be arranged near the inner peripheral surface.

As described above, since the needle electrodes 14 are arranged substantially evenly in each of the large wheel portion 17 and the small wheel portion 18, the passage holes 21 of the counter electrode 20 corresponding to the needle electrode 14 are also formed substantially evenly. .. Therefore, the morphology of the counter electrode 20 is also good, and efficient ion generation is realized.
Then, the ions increased by the ion generator 10 are sent out from the wind tunnel cylinder 23 by a suitable air flow as described above, and reach a distant place in the room.

5A and 5B are views showing a schematic configuration of an ion generator 1, FIG. 5A is a side view, and FIG. 5B is a plan view.
With reference to FIGS. 5 (A) and 5 (B), the discharge port 6 is formed on the front surface of the main body casing 2. Specifically, the discharge port 6 is formed at a position close to the upper surface and the left and right side surfaces of the main body casing 2 so that the discharge air flow 31 blown out from the discharge port 6 efficiently reaches a distant place.

By providing the discharge port 6 at a high position near the upper surface of the main body casing 2 in this way, it is possible to separate the discharge air flow 31 from the floor surface and reduce the amount of dust and the like flying up from the floor surface. That is, it is possible to avoid a phenomenon in which the dust in the room is increased due to the exhaust air flow 31 sent out from the ion generator 1.

Further, the position of the suction air flow 32 that is sucked by the exhaust air flow 31 and flows outside the main body casing 2 is also separated from the floor surface. That is, the position of the entire air flow flowing in a substantially beam shape is away from the floor surface. Therefore, it is possible to reduce dust and the like on the floor surface that are caught in the entire air flow.

Specifically, the amount of air sent out from the fan 11 is about 2 cubic meters / minute. On the other hand, the amount of discharged air of a general air purifier is about 20 cubic meters / minute. That is, the ion generator 1 is not configured to blow out a strong wind like a general air purifier, and the amount of air sent out from the ion generator 1 is 1/1 compared to a general air purifier. It will be about 10.

With such a configuration, the ion generator 1 can maintain the cleanliness of the air in the room without blowing out a strong wind and secondarily blowing up dust or the like for reproduction. That is, the ion generator 1 can widely supply ions and a small amount of ozone into the room to be cleaned by utilizing the suitable air blown by the fan 11, and can also blow up dust from the structure or the like by the blown air. do not have. As described above, the ion generator 1 is a device having an excellent functional balance having both a function of widely diffusing ions into a room and a function of preventing the diffusion of dust and the like.

Here, when the discharge port 6 is separated from the side surface or the upper surface of the main body casing 2, the suction air flow 32 flowing from the outside of the main body casing 2 wraps around the front surface of the main body casing 2 and creates a Karman vortex in the vicinity of the peripheral portion of the front surface. generate. As a result, the vortex flow due to the suction air flow 32 becomes an air resistance, and the exhaust air flow 31 discharged from the main body casing 2 is prevented from being efficiently formed in a substantially beam shape.

Therefore, the distance from the discharge port 6 to the side surface of the main body casing 2 and the distance from the discharge port 6 to the upper surface of the main body casing 2 should be short. That is, the peripheral edge portion of the discharge port 6 should be closer to the peripheral edge portion on the front surface.

In the ion generator 1, the distance from the discharge port 6 to the side surface of the main body casing 2 and the distance to the upper surface are preferably 50 mm or less, more preferably 30 mm or less. More preferably, the distance from the discharge port 6 to the side surface of the main body casing 2 and the distance to the upper surface may be about 0 mm. That is, the discharge port 6 may be formed so that its peripheral edge portion is at the same position as the side surface and the upper surface of the main body casing 2.

As described above, the discharge port 6 for blowing out air is formed so that the distance from the side surface and the upper surface of the main body casing 2 is short, so that the air resistance due to the suction air flow 32 flowing outside the main body casing 2 is increased. It can be suppressed.

By forming the distance from the outer peripheral edge of the discharge port 6 to the side surface and the upper surface of the main body casing 2 to be about 0 mm, the influence of the air resistance due to the suction air flow 32 that wraps around the outer surface of the main body casing 2 can be minimized. Can be reduced.

Further, although not shown, the peripheral side portion, that is, the corner portion of the front surface of the main body casing 2 may be formed in an R chamfered shape. Specifically, for example, an R curved surface shape having a radius of about R30, that is, a radius of about 30 mm may be formed. By forming the R chamfered shape on the peripheral side portion of the front surface of the main body casing 2 in this way, the generation of Karman vortices due to the suction air flow 32 flowing through the outer surface of the main body casing 2 and merging with the exhaust air flow 31 is suppressed. , The increase in air resistance can be suppressed.

As described above, when the peripheral side portion of the front surface of the main body casing 2 is provided with R chamfer, the distance from the discharge port 6 to the front end portion of the R chamfer is preferably 50 mm or less, more preferably 50 mm or less. Is 30 mm or less, more preferably about 0 mm.

The ion generator 1 can reduce the air flow resistance inside the wind tunnel cylinder 23 and efficiently discharge the air indoors from the discharge port 6. Further, in the ion generator 1, the exhaust air flow 31 and the suction air flow 32 are suitably combined to form a substantially beam shape, so that the air discharged from the discharge port 6 is not diffused in the radial direction and goes straight. It can reach far away.

As described above, in the ion generator 1 according to the present embodiment, the air discharge port 6 is formed at a position on the front surface of the main body casing 2 and close to the upper surface. With such a configuration, the generation of the vorticity is suppressed and the increase in air resistance is suppressed. Then, dust and the like are blown up from the bottom surface of the floor and shelves together with the air flow, the generated ions are adsorbed on the bottom surface of the floor and shelves, and the ions suddenly repel the charged material. Can be suppressed.

FIG. 6 is a perspective view showing a schematic configuration of the ion generator 1, and is a view of the ion generator 1 viewed from diagonally above to the right toward the back surface.
With reference to FIG. 6, a plurality of suction ports 5 are formed on the back surface of the main body casing 2.
The suction port 5 is an opening for sucking air into the ion generator 1 from the room, and is formed so as to be arranged substantially evenly on the entire back surface of the main body casing 2.

Since the plurality of suction ports 5 are formed on substantially the entire back surface in this way, a large opening area of the suction ports 5 can be secured. Therefore, the suction port 5 has a small air resistance and can efficiently suck a large amount of air, whereby the ion generator 1 blows out a large amount of air from the front discharge port 6 and has a strong exhaust air flow. 31 can be formed.

Further, a filter 24 for removing dust and the like may be provided inside the suction port 5, that is, inside the main body casing 2. Specifically, the filter 24 is located inside the suction port 5 and on the upstream side of the ion generator 10.

As described above, in the ion generator 1, since the suction port 5 is formed in substantially the entire back surface of the main body casing 2, a filter 24 having a large area can be provided. Since the suction ports 5 are arranged at substantially even intervals, it is possible to effectively utilize the entire area of the filter 24 to remove dust and the like from the suction air.

Next, with reference to FIGS. 7 and 8, the ion generator 110 of the ion generator 101 and the ion generator 210 of the ion generator 201 will be described in detail as an example of modifying the embodiment. The components having the same or similar actions and effects as those of the above-described embodiments are designated by the same reference numerals, and the description thereof will be omitted.

FIG. 7 is a perspective view of the ion generator 110 of the ion generator 101.
As shown in FIG. 7, the passage hole 21 formed in the counter electrode 20 of the ion generator 110 may be provided with a guide pipe 22 for guiding the flow of air flowing out from the passage hole 21.

The guide pipes 22 have a substantially cylindrical shape, and a plurality of guide pipes 22 are provided on the air discharge side of the counter electrode 20. Each guide pipe 22 is provided substantially coaxially with the corresponding passage hole 21. The inner diameter of the guide pipe 22 is substantially the same as the diameter of the passage hole 21.

By providing such a guide pipe 22, it is possible to reduce unnecessary air resistance due to the generation of Karman vortices when air passes through the passage hole 21. Therefore, the ion generator 101 can more efficiently concentrate a strong flow in a substantially beam shape and send it out to a distant place.

8A and 8B are views showing a schematic configuration of a counter electrode 20 of the ion generator 201, FIG. 8A is a front view, and FIG. 8B is a side view.
With reference to FIGS. 8A and 8B, the guide pipe 22 of the ion generator 210 is provided so as to be inclined in the same circumferential direction of the wind tunnel cylinder 23 and to be inclined in the radial direction of the wind tunnel cylinder 23. May be.

Specifically, the guide pipe 22 is inclined at a minute angle with respect to the axial direction of the wind tunnel cylinder 23 of the ion generator 201, that is, the overall traveling direction of the exhaust air flow 31 blown out from the discharge port 6 in the room. is doing.

Specifically, the guide pipe 22 is inclined inward so that the tip side connected to the discharge port 6 faces inward, that is, inward in the radial direction of the wind tunnel cylinder 23, and is inclined in the same circumferential direction of the wind tunnel cylinder 23. The tilt angle is, for example, 5 degrees or less, preferably 2 to 3 degrees.

With such a configuration, air can be efficiently blown out from the inclined guide pipe 22 to generate a substantially spiral air flow. That is, the exhaust air flow 31 blown out from the inclined guide pipe 22 connected to the discharge port 6 advances while forming a gentle vortex so as to draw a substantially spiral trajectory, and is one as a whole in a cohesive manner. A strong, substantially beam-like flow is formed.

As a result, the flow of air discharged from the ion generator 210 efficiently forms a substantially beam shape and reaches a distant place, and ions and a small amount of ozone are supplied to a distant place in the target room together with this air flow.

As an example of the above, FIG. 8 shows four guide pipes 22, but the number of guide pipes 22 is not limited to this. For example, as shown in FIG. 7, 12 guide pipes 22 may be provided. An arbitrary number of guide pipes 22 are provided corresponding to the passage holes 21 of the needle electrode 14 and the counter electrode 20.

As described above, the ion generators 1, 101, and 201 according to the present embodiment generate strong winds such that dust and the like are reproduced in the room like a general air purifier in which strong air is blown. It's not a thing. The ion generators 1, 101, and 201 can realize an air purifying function that supplies ions to the depths of the target room without sending a strong wind that blows dust or the like into the room.

Then, in the ion generators 1, 101 and 201, a substantially beam-shaped air flow with little loss due to air resistance is formed by the ion generators 10, 110 and 210, the main body casing 2 and the discharge port 6 which are suitably configured. Will be done.

As a result, the air containing ions and a trace amount of ozone can reach a distant place in the room without dust or the like flying up from the floor surface or the like due to the flow of the discharged air. Therefore, it is possible to remove dust and the like and maintain a sterilization environment, which was not possible with the prior art.

In particular, since the ion generators 1, 101 and 201 can supply ions and a small amount of ozone to the entire room, excellent effects not found in the prior art can be obtained. That is, the ion generators 1, 101, and 201 are not configured to supply only ions into the room, but can supply a mixed gas containing ions and a trace amount of ozone to the entire room.

The ion generators 1, 101, and 201 can supply a mixed gas of ions and a trace amount of ozone to the entire room without being adsorbed by surrounding structures and the like and reducing the effect, and fill the room. It is possible to remove all viruses and the like.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention.

1, 101, 201 Ion generator 2 Main body casing 3 High voltage generator 4 Control device 5 Suction port 6 Discharge port 10, 110, 210 Ion generator 11 Fan 12 Fan casing 13 Needle electrode unit 14 Needle electrode 15 Needle tip 16 Support part 17 Large wheel part 18 Small wheel part 20 Counter electrode 21 Passing hole 22 Guide pipe 23 Air cavity cylinder 24 Filter 25 Grounding 30 Intake air flow 31 Exhaust air flow 32 Suction air flow

Claims (4)

With a fan that sends air,
A wind tunnel cylinder that serves as a flow path for the air sent from the fan,
A plurality of needle electrodes provided inside the wind tunnel cylinder to which a voltage is applied, and
A plate-shaped counter electrode provided on the outlet side of the wind tunnel cylinder and having a lower potential than the needle electrode is provided.
The needle electrodes are provided in parallel so that the tip of each needle faces the outlet side of the wind tunnel cylinder.
An ion generator characterized in that the counter electrode is formed with a passage hole through which the air flows on an extension line of the needle electrode. The inner diameter of the wind tunnel cylinder is equal to or larger than the inner diameter of the fan casing covering the outer circumference of the fan.
The ion generator according to claim 1, wherein the needle electrodes are coaxially arranged with the wind tunnel cylinder and are evenly arranged on a circumference having a diameter smaller than the inner diameter of the fan casing. The ion generator according to claim 1 or 2, wherein the passage hole is provided with a guide pipe that guides the flow of the air flowing out of the passage hole. The ion generator according to claim 3, wherein the guide pipe is inclined in the same circumferential direction of the wind tunnel cylinder and is inclined in the radial direction of the wind tunnel cylinder.

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