JP7215763B2 - ion generator - Google Patents

Description

TECHNICAL FIELD The present invention relates to an ion generator, and more particularly to an ion generator that supplies air containing ions and ozone generated in 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, Patent Literature 1 discloses an axial fan comprising a plurality of blades and a central portion that radially supports the blades in a casing, and a plurality of blades provided downstream of the airflow generated by the axial fan. and a discharge electrode, and ejects ions generated by the discharge electrode by an air current.

Further, for example, Patent Document 2 discloses a fan provided in a 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. and a counter electrode located downstream of the ion generator.

One of the functions of this type of ion generator is that of 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.

JP 2017-216174 A Japanese Patent Application Laid-Open No. 2020-149961

However, the conventional ion generator described above has some points to be improved in order to improve performance such as air cleaning with ions.

That is, in order to enhance the effect of ions such as air cleaning, it is required to stably supply ions throughout the target room. However, it is difficult for the conventional ion generator described above to send ions to a distant place, and it is difficult to supply ions throughout the room.

Specifically, first, there is the problem that ions adhere to structures and are attenuated. That is, ions sent out from the ion generator are attracted 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 the problem that the structure becomes a barrier to the progress of ions due to electrification. That is, when the surrounding structures are charged, the movement route of the ions is bent by the electrostatic force due to the charged voltage. In some cases, reroutes that are close to reflections may occur. Further, for example, when the charge of the structure changes due to changes in temperature and humidity, etc., the flow path of ions also changes. Therefore, the amount of ions to be measured varies greatly depending on the location, and a stable amount of ions cannot be obtained.

A third problem is that the ions discharged from the ion generator repel each other and disperse. For example, ions ejected from a plurality of outlets repel each other and spread away from the ejection direction. As a result, the ions cannot reach far in the blowing direction, and it is difficult to fill the entire room with ions.

SUMMARY OF THE INVENTION 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 or a small amount of ozone over a long distance.

The ion generator of the present invention includes a fan for sending air, a wind tunnel cylinder serving 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, a plate-shaped counter electrode provided on the exit side of the wind tunnel cylinder and having a lower potential than the needle electrode, and the needle electrodes are arranged parallel to each other so that the tip portions of the needle electrodes face the exit side of the wind tunnel cylinder. a passage hole through which the air flows is formed in the counter electrode on an extension line of the needle electrode, and a guide pipe that guides the flow of the air flowing out from the passage hole in the passage hole is provided, and the guide pipe is inclined in the same direction with respect to the circumferential direction on the same circumference of the wind tunnel cylinder and inclined inward in the radial direction of the wind tunnel cylinder. It is characterized by

According to the ion generator of the present invention, there are provided a fan for sending air, a wind tunnel cylinder serving 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 wind tunnel. a plate-shaped counter electrode provided on the exit side of the cylinder and having a lower potential than the needle electrode ; The electrode is formed with a passage hole through which air flows on an extension of the needle electrode. As a result, ions and a small amount of ozone discharged from the ion generator can be sent far away in the room without being attenuated.

Specifically, since the plurality of needle electrodes are provided in parallel so that the respective needle tip portions face the exit 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.

Passage holes through which air flows are formed in the opposing electrode on extension lines of the needle electrodes corresponding to the respective needle electrodes. That is, by forming the passage holes in the opposing electrode, the plurality of needle electrodes and the plurality of passage holes form pairs, and the plurality of electrode portions facing the plurality of needle electrodes are formed. As a result, ions and minute amounts of ozone are preferably generated along with a suitable air flow for each individual needle electrode and passage hole. The increased ions are then sent out of the wind tunnel cylinder by a suitable air flow and reach far into the chamber.

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 that covers the outer periphery of the fan, and the needle electrodes are arranged in the wind tunnel cylinder. may be evenly arranged on a circumference coaxial with and smaller in diameter than the inner diameter of the fan casing. By providing the wind tunnel cylinder with the same inner diameter as the fan casing or a larger diameter in this way, a suitable flow path with less air resistance is formed. By arranging the needle electrodes substantially evenly on the circumference, suitable air currents can be obtained for each of the plurality of needle electrodes, and the positional relationship with the passage hole 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 that guides the flow of the air flowing out from the passage hole. As a result, unnecessary air resistance due to the Karman vortices can be reduced when the air passes through the passage hole, and a strong flow can be concentrated in a beam shape and sent out more efficiently.

Moreover, 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 helical airflow. Therefore, the air containing ions can reach far in the room.

It is a perspective view of an ion generator concerning an embodiment of the present invention. It is an exploded perspective view of an ion generator of an ion generator concerning an embodiment of the present invention. It is a front view near 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 an ion generator of an ion generator concerning an embodiment of the present invention. It is the (A) perspective view and (B) top view which show 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. FIG. 4 is a perspective view of an ion generator of an ion generator according to another embodiment of the present invention; It is the (A) front view and (B) side view which show the guide pipe vicinity of the counter electrode of the ion generator which concerns on other embodiment of this invention.

Hereinafter, an ion generator according to an embodiment of the present invention will be described in detail based on 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 diagonally from the 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 body casing 2 is made of, for example, various sheet metal materials, synthetic resin materials, or the like.

Inside the main body casing 2 are 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 controller 4 for controlling the supply of ions. , is provided.

An exhaust port 6 is formed in the front surface of the main body casing 2 as an opening through which the air containing the generated ions and a small amount of ozone is discharged into the room. A suction port 5, which is an opening for sucking air for sending out ions and ozone, is formed on the rear surface of the main body casing 2. As shown in FIG.

Although illustration is omitted, for example, on the front surface of the main body casing 2, various display means such as a display and lights for displaying the operational status of the ion generating device 1, the indoor status, and the like may be provided. Various input means such as a switch for inputting an operation signal to the ion generator 1 by the user may be provided on, for example, the front surface of the main body casing 2 .

FIG. 2 is an exploded perspective view showing a schematic configuration of the ion generator 10. As shown in FIG.
Referring to FIG. 2 , ion generator 10 includes fan 11 for sending air, wind tunnel cylinder 23 serving as an air flow path, needle electrode unit 13 provided inside wind tunnel cylinder 23 , and wind tunnel cylinder 23 . and a counter electrode 20 provided on the exit side.

The fan 11 is a blower that blows air into the wind tunnel cylinder 23, and is, for example, an axial flow blower that blows air substantially in the direction of the rotation axis. 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 with an enlarged diameter on the air blowing side.

The needle electrode unit 13 is provided downstream of the fan 11 , that is, on the blowing side, 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 made of a metal plate, bar, or the like, and has a smaller diameter 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. As shown in FIG.
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-diameter large ring portion 17 and a small-diameter small ring portion 18 formed coaxially with the wind tunnel cylinder 23 .

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

The needle electrodes 14 have a substantially needle-like shape, and are provided in parallel so that the respective needle tip portions 15 face the exit 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 electrodes 14 extend substantially along the direction of the airflow sent from the fan 11, and the air resistance in the vicinity of the needle electrodes 14 is kept small.

The needle electrodes 14 are desirably arranged substantially evenly as a whole, and are arranged and fixed to the large ring portion 17 and the small ring portion 18 of the support portion 16 at substantially equal angles. More specifically, for example, eight needle electrodes 14 are arranged on the large ring portion 17 at substantially even angles, that is, at intervals of approximately 45 degrees. At the minor annulus 18, the four needle electrodes 14 are approximately evenly spaced, ie, approximately 90 degrees apart, and offset by approximately 25.5 degrees relative to the needle electrodes 14 located at the major annulus 17. It is placed in the position where By arranging a total of 12 needle electrodes 14 substantially evenly in this manner, suitable airflows can be obtained for each of the plurality of needle electrodes 14 .

Although illustration is omitted, for example, 10 needle electrodes 14 are arranged on the large ring portion 17 at approximately equal angles, that is, at intervals of about 36 degrees, and 5 needle electrodes are arranged on the small ring portion 18. The electrodes 14 may be spaced at substantially even angles, ie approximately 72 degrees apart, for a total of 15 needle electrodes 14 . The number and arrangement of the needle electrodes 14 are not limited to those described above, and other configurations in which they are arranged substantially evenly may be used.

FIG. 4 is an exploded perspective view showing a schematic configuration of the ion generator 10. As shown in FIG.
Referring to FIG. 4, wind tunnel cylinder 23 is, for example, a substantially cylindrical member made of sheet metal material, synthetic resin material, or the like. 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 circumference of the fan 11 .

Specifically, the difference between the inner diameter of the wind tunnel cylinder 23 and the inner diameter of the fan casing 12 is preferably 20 mm or less. Accordingly, by providing the wind tunnel cylinder 23 with the same inner diameter as the fan casing 12 or a larger diameter, it is possible to prevent phenomena that cause air resistance such as Karman vortices, thereby providing a suitable flow with less air resistance. A path 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, for example, connected to 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 perpendicular to the axis of the wind tunnel cylinder 23 .

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

By forming the passage holes 21 in the counter electrode 20 in this way, the plurality of needle electrodes 14 and the plurality of passage holes 21 form pairs, forming a plurality of electrode portions facing the needle electrodes 14 respectively. will be As a result, ions and a small amount of ozone are preferably generated for each needle electrode 14 and passage hole 21 .

The passage hole 21 is connected to the outlet 6 shown in FIG. 1, and constitutes a blower outlet for sending air containing the generated ions and a small amount of ozone into the room. With such a structure in which the plurality of needle electrodes 14 and the passage holes 21 corresponding thereto are provided substantially evenly, ions discharged from the ion generator 1 and a small amount of ozone can be sent far away 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 conventional technology, that is, the discharged ions and a small amount of ozone reach a long distance. do.

Specifically, the plurality of passage holes 21 serving as the discharge ports 6 are arranged substantially concentrically and substantially evenly as much as possible. As a result, the discharge airflow 31 is formed as a substantially cylindrical strong flow. The discharged airflow 31 spreads little in the horizontal direction, and reaches a distance while maintaining a substantially beam-like flow in a fixed direction.

In this way, by making the discharged air a strong linear airflow, it overcomes the problems of the conventional technology, such as attenuation due to ions adhering to structures and ion barriers due to electrification of structures. 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, dispersion of the amount of ions due to repulsion between ions discharged from a plurality of ion discharge ports as in the prior art is suppressed, and ions and a small amount of ozone can be made to reach a long distance without being attenuated.

Although not shown, the discharge port 6 may be provided with a plate-like cover member having a plurality of openings corresponding to the passage holes 21 . The cover member is made 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, the counter electrode 20 and the like of the ion generator 10 inside the main body casing 2 can be contacted from the outside of the ion generator 1 without hindering the suitable blowing of air from the passage hole 21 . can be prevented. Therefore, the safe ion generator 1 that can efficiently send air can be obtained.

The intake airflow 30 is drawn into the ion generator 10 by the rotation of the fan 11, which is larger than the circumference of the entire needle electrode 14 group. The inhaled air passes through the needle electrode unit 13 to which a high voltage is applied, passes through the counter electrode 20 which has a ground potential or a low potential equivalent to the ground, and finally exits air containing ions and a small amount of ozone. 31 is discharged.

As described above, a plurality of needle electrodes 14 are connected to 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 formed substantially concentrically with the needle electrodes 14 . As a result, ions and a small amount of ozone are generated by each needle electrode 14 and passage hole 21 pair.

The direction of the needle electrode 14 is substantially parallel to the rotating shaft of the fan 11 in order to minimize the air resistance. That is, the airflow near the needle electrode 14 is in a direction substantially the same as the airflow immediately after the fan 11 . The provision of the plurality of needle electrodes 14 at approximately 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 with the fan 11 and to prevent phenomena that cause air resistance such as Karman vortices. . Specifically, the inner diameter of the wind tunnel cylinder 23 is at most about the inner diameter of the fan casing 12 plus 20 mm.

With such a structure, the flow of air discharged from the fan 11 is substantially equal to the flow within the fan casing 12, passes through the inside of the wind tunnel cylinder 23 without attenuation, and reaches the opposing electrode 20 at substantially equal intervals. It is discharged into the room through the provided passage hole 21 . The discharged airflow 31 is discharged from the passage hole 21 in a collective, substantially cylindrical, substantially beam-like shape, and reaches a long distance without diffusing.

That is, with such a structure, the air resistance inside the wind tunnel cylinder 23 is reduced, and the substantially beam-shaped discharge airflow 31 that is substantially cylindrical, dense, and substantially uniform is efficiently generated. can blow out.

As a result, the ion generator 1 according to the present embodiment can easily exceed the average wind speed of about 0.4 m/sec in the vicinity of the outlet of the device in the conventional technology, but it can easily exceed 1 m/sec. rice field. Such a high-velocity, strong exhaust airflow 31 withstands electrification of surrounding structures such as chairs and desks and attraction when these structures are at ground potential, and reaches a long distance. The exhaust airflow 31, which has strong straightness and high wind speed, can make ions reach far 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 equal intervals in the circumferential direction around the rotating shaft of the fan 11, and have a structure that substantially uniformly affects the passing air. In the above example, the needle electrodes 14 are arranged in a double substantially concentric circle. That is, 8 pieces are arranged on the circumference of the outer large ring portion 17 at regular intervals of 45 degrees, and 4 pieces are arranged on the circumference of the inner small ring portion 18 at regular 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 manner, the flow of air passing through the interior of the wind tunnel cylinder 23 is constantly stabilized.

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

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 the flow of air discharged from the fan 11 has no steps and almost no air resistance.

As for the needle electrode unit 13, similarly, the individual needle electrodes 14 are spaced appropriately and substantially evenly apart so as not to disturb the flow of air inside the wind tunnel cylinder 23 and not to weaken the strength of the flow. kept in place. As a result, it is possible to prevent the air from flowing unevenly to a certain part, suppress the generation of vortices, and reduce the air resistance.

In addition, the airflow discharged by the rotation of the fan 11 forms a vortex, and the wind flow near the outer peripheral portion of the fan 11 becomes stronger. Therefore, depending on the shape of the fan 11 , many needle electrodes 14 may be arranged near the outer periphery of the fan 11 .

That is, the needle electrodes 14 may be arranged intensively in the vicinity of the outer edge of the wind tunnel cylinder 23 rather than being arranged substantially evenly throughout the inside of the wind tunnel cylinder 23 . Arranging a large number of needle electrodes 14 in the vicinity of the outer periphery of the fan 11 in this way is effective in maintaining the strength of the air flow and discharging the air with little air resistance.

Specifically, when the flow of air on the center side of the wind tunnel cylinder 23 is small, the needle electrode 14 on the small ring portion 18 on the center side is omitted, and the large ring portion 17 near the inner peripheral surface of the wind tunnel cylinder 23 is omitted. An arrangement in which only the needle electrode 14 is provided may be used.

In addition, in the configuration in which the needle electrodes 14 are provided in the large ring portion 17 and the small ring portion 18 , the diameter of the small ring portion 18 is increased to bring it closer to the large ring portion 17 so that all the needle electrodes 14 are located closer to the center side of the wind tunnel cylinder 23 . A configuration in which it is arranged near the inner peripheral surface may also be used.

As described above, the needle electrodes 14 are arranged substantially evenly in the large ring portion 17 and the small ring portion 18, respectively. . Therefore, the shape of the counter electrode 20 is also improved, 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 diagrams showing a schematic configuration of the ion generator 1, where FIG. 5A is a side view and FIG. 5B is a plan view.
5(A) and 5(B), the discharge port 6 is formed in the front surface of the main body casing 2. As shown in FIG. 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 airflow 31 blown out therefrom can efficiently reach far away.

By providing the discharge port 6 at a high position close to the upper surface of the main body casing 2 in this manner, the discharge air flow 31 is separated from the floor surface, and dust and the like can be reduced from being blown up from the floor surface. That is, it is possible to avoid a phenomenon in which the exhaust airflow 31 sent out from the ion generator 1 conversely increases the amount of dust in the room.

In addition, the position of the suction airflow 32 that is sucked by the discharge airflow 31 and flows outside the main body casing 2 is also separated from the floor surface. In other words, the position of the entire airflow flowing in a substantially beam shape is away from the floor surface. Therefore, it is possible to reduce the amount of dust on the floor that is caught in the overall 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. In other words, the ion generator 1 is not configured to blow a strong wind like a general air purifier, and the amount of air sent out from the ion generator 1 is 1/1 that of a general air purifier. It becomes about 10.

With such a configuration, the ion generator 1 can maintain the cleanness of the air in the room without blowing strong winds to secondary dust and the like to be regenerated. 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 blowing from the fan 11, and the air blowing can stir up dust from structures and the like. do not have. As described above, the ion generator 1 is an apparatus having an excellent functional balance, having both the function of diffusing ions widely in the room and the function of preventing the diffusion of dust and the like.

Here, if the discharge port 6 is away from the side surface or the upper surface of the main casing 2, the suction airflow 32 flowing from the outside of the main casing 2 wraps around the front of the main casing 2 and creates a Karman vortex near the periphery of the front. generate. As a result, the swirl caused by the suction airflow 32 acts as an air resistance, which prevents the discharge airflow 31 discharged from the main body casing 2 from being efficiently formed into a substantially beam shape.

Therefore, it is preferable that 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 are short. That is, the peripheral edge of the outlet 6 should be close to the front peripheral edge.

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 and the top surface of the main body casing 2 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 top surface of the main body casing 2 .

In this way, the discharge port 6 for blowing air is formed so that the distance from the side surface and the top surface of the main casing 2 is short, so that the increase in air resistance due to the suction air flow 32 flowing outside the main casing 2 is reduced. suppressed.

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

Also, although not shown, the peripheral side portions of the front face of the main body casing 2, that is, the corner portions may be formed in an R-chamfered shape. Specifically, for example, an R curved surface shape with 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 the Karman vortices by the suction air flow 32 flowing on the outer surface of the main body casing 2 and joining the discharge 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 rounded, the distance from the discharge port 6 to the end of the rounded front surface is preferably 50 mm or less, more preferably 50 mm or less. is 30 mm or less, more preferably about 0 mm.

In the ion generator 1 , the flow resistance of the air inside the wind tunnel cylinder 23 can be reduced, and the air can be efficiently discharged indoors from the discharge port 6 . In addition, in the ion generator 1, the exhaust air flow 31 and the suction air flow 32 are preferably merged into a substantially beam-like shape, so that the air discharged from the discharge port 6 is not diffused in the radial direction but is straight. It can reach long distances.

As described above, in the ion generator 1 according to the present embodiment, the air outlet 6 is formed on the front surface of the main body casing 2 at a position close to the upper surface. With such a configuration, the generation of vortex is suppressed, and the increase in air resistance is suppressed. In addition, dust is blown up from the bottom surface of floors and shelves together with air currents, generated ions are adsorbed to the bottom surface of floors and shelves, and ions suddenly repel charged objects. 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 obliquely from the upper right toward the back.
Referring to FIG. 6, a plurality of suction ports 5 are formed on the rear surface of main body casing 2 .
The intake ports 5 are openings for sucking air from the room into the ion generator 1 , and are arranged substantially evenly over substantially 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 manner, a large opening area for the suction ports 5 can be ensured. Therefore, the intake port 5 has a small air resistance and can efficiently inhale a large amount of air, whereby the ion generator 1 blows out a large amount of air from the exhaust port 6 on the front surface, creating a strong exhaust air flow. 31 can be formed.

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. As shown in FIG. Specifically, the filter 24 is arranged inside the suction port 5 and upstream of the ion generator 10 .

As described above, in the ion generator 1, the suction port 5 is formed over substantially the entire rear surface of the main body casing 2, so the large-area filter 24 can be provided. Since the suction ports 5 are arranged at substantially equal intervals, the entire area of the filter 24 can be effectively used to remove dust and the like from the sucked air.

Next, as modified examples of the embodiment, the ion generator 110 of the ion generator 101 and the ion generator 210 of the ion generator 201 will be described in detail with reference to FIGS. 7 and 8. FIG. In addition, the same code|symbol is attached|subjected about the component with the same or similar effect|action and effect as embodiment already demonstrated, and the description is abbreviate|omitted.

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

The guide pipe 22 has a substantially cylindrical shape and is provided in plurality 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, when air passes through the passage hole 21, unnecessary air resistance due to the generation of Karman vortices can be reduced. Therefore, the ion generator 101 can more efficiently concentrate a strong flow into a substantially beam shape and send it out to a distant place.

8A and 8B are diagrams showing a schematic configuration of the counter electrode 20 of the ion generator 201, FIG. 8A being a front view and FIG. 8B being a side view.
8(A) and 8(B), 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. can be

Specifically, the guide pipe 22 is inclined at a slight angle with respect to the axial direction of the wind tunnel cylinder 23 of the ion generator 201, that is, the direction in which the discharged air flow 31 blown out from the discharge port 6 generally travels in the room. are doing.

Specifically, the guide pipe 22 is inclined inward in the radial direction of the wind tunnel cylinder 23 so that the tip side connected to the discharge port 6 faces inward, and is also inclined in the same circumferential direction of the wind tunnel cylinder 23. The inclination 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 helical airflow. That is, the discharge airflow 31 blown out from the inclined guide pipe 22 connected to the discharge port 6 moves forward while forming a gentle vortex so as to draw a substantially spiral trajectory, and is well integrated as a whole. A powerful, nearly beam-like flow is formed.

As a result, the flow of air discharged from the ion generator 210 is effectively shaped like a beam and reaches a long distance, and together with this airflow, ions and a small amount of ozone are supplied far into the target room.

Although four guide pipes 22 are illustrated in FIG. 8 as the above example, 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 wind that causes dust and the like to be reproduced in the room like a general air purifier that blows strong air. not a thing The ion generators 1, 101, and 201 can achieve an air cleaning function that supplies ions to the depths of the target room without blowing strong wind that stirs up dust or the like into the room.

The ion generators 1, 101, and 201 form a substantially beam-shaped air flow with little loss due to air resistance by the appropriately configured ion generators 10, 110, and 210, the main body casing 2, and the discharge port 6. be done.

As a result, the air containing ions and a small amount of ozone can reach far into the room without causing dust and the like to rise up from the floor 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 impossible with the conventional technology.

In particular, the ion generators 1, 101, and 201 can supply ions and a very small amount of ozone to the entire room, so that excellent effects not found in the prior art can be obtained. That is, the ion generators 1, 101, and 201 are characterized by being capable of supplying a mixed gas containing ions and a small amount of ozone to the entire interior of the target room, instead of supplying only ions into the room.

The ion generators 1, 101, and 201 can supply the mixed gas of ions and a small amount of ozone to the entire room without being adsorbed by the surrounding structures and the like to reduce the effect, and the room is filled with the mixed gas. Viruses and the like can be completely removed.

It should be noted that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

Reference Signs List 1, 101, 201 ion generator 2 body casing 3 high voltage generator 4 controller 5 inlet 6 outlet 10, 110, 210 ion generator 11 fan 12 fan casing 13 needle electrode unit 14 needle electrode 15 needle tip 16 Supporting portion 17 Large ring portion 18 Small ring portion 20 Counter electrode 21 Passing hole 22 Guide pipe 23 Wind tunnel cylinder 24 Filter 25 Ground 30 Intake air flow 31 Exhaust air flow 32 Suction air flow

Claims (2)

a fan that blows air,
a wind tunnel cylinder serving 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;
a plate-shaped counter electrode provided on the outlet side of the wind tunnel cylinder and having a lower potential than the needle electrode;
The needle electrodes are provided in parallel so that their respective needle tip portions face the exit side of the wind tunnel cylinder,
a passage hole through which the air flows is formed in the counter electrode on an extension line of the needle electrode ;
The passage hole is provided with a guide pipe that guides the flow of the air flowing out from the passage hole,
The guide pipe is slanted in the same direction with respect to the circumferential direction on the same circumference of the wind tunnel cylinder and is slanted inward in the radial direction of the wind tunnel cylinder. Ion generator. The inner diameter of the wind tunnel cylinder is equal to or greater than the inner diameter of the fan casing that covers the outer circumference of the fan,
2. The ion generator according to claim 1, wherein the needle electrodes are coaxial with the wind tunnel cylinder and are evenly arranged on a circumference having a smaller diameter than the inner diameter of the fan casing.

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