WO2004019462A1

WO2004019462A1 - Ion generator

Info

Publication number: WO2004019462A1
Application number: PCT/JP2002/008541
Authority: WO
Inventors: Hisatoshi Suminoe
Original assignee: Daito Co., Ltd.
Priority date: 2002-08-23
Filing date: 2002-08-23
Publication date: 2004-03-04
Also published as: JPWO2004019462A1; JP3987855B2; CN1650492A; AU2002328534A1

Abstract

A negative ion generator (10) comprising a needle electrode (2), a counter electrode (3), an insulator (4), a supporting member (5), a power supply circuit (6), and wiring (7, 8). The counter electrode (3) is covered by the insulator (4). The needle electrode (2) is secured to the supporting member (5). The wiring (7) is connected with the needle electrode (2) and the wiring (8) is connected with the counter electrode (3). The power supply circuit (6) applies a negative voltage of -5 kV to -9 kV to the needle electrode (2) through the wiring (7) and applies the ground voltage (0V) to the counter electrode (3) through the wiring (8).

Description

Description Ion generator Technical field

The present invention relates to an ion generator that generates negative ions or positive ions. Background art

Recently, interest in health equipment has increased. One such health device is a negative ion generator. This negative ion generator generates negative ions in air by applying a voltage between two electrodes.

Figure 32 shows the main parts of a conventional negative ion generator. A conventional negative ion generator includes a discharge needle 60 and a counter electrode 70. The counter electrode 70 has a ring shape, and is disposed in front of the tip 6OA of the discharge needle 60. Discharge is not covered with insulation, and the tip 6 O A is sharp.

Then, a negative voltage of about several kV is applied to the discharge needle 60 via the wiring 61. O V or a positive voltage is applied to the counter electrode 70 via the wiring 71. Then, a slight current flows in the space 80 between the discharge needle 60 and the counter electrode 70, and local destruction occurs. Then, the corona discharge continues in the space 80 between the discharge needle 60 and the counter electrode 70.

In this case, the discharge needle 60 emits electrons from the tip 6 OA or air near the tip 6 OA. In the direction in which electrons are emitted, the counter electrode 70 to which OV or a positive voltage is applied is present, so that electrons are emitted from the tip 6 OA of the discharge needle 60 or air near the tip 6 OA. Most of the electrons are attracted to the counter electrode 70 and disappear. Then, only the electrons that passed through the counter electrode 70 were attached to oxygen molecules or nitrogen molecules to become negative ions, and were emitted as ion wind from the negative ion generator.

When corona discharge occurs in space 80 between discharge needle 60 and counter electrode 70, 0 V Alternatively, oxygen molecules or nitrogen molecules are dissociated or ionized near the counter electrode 70 to which a positive voltage is applied. As a result, positive ions are generated near the counter electrode 70. OV or positive voltage is applied to the counter electrode 70, so that positive ions are not extinguished by the counter electrode 70 and are not absorbed by the discharge needle 60. become.

As described above, in the method in which the counter electrode is arranged in the electron emission direction, most of the electrons emitted into the air are pulled by the counter electrode 70 and disappear.

Therefore, as shown in Fig. 33, a method was devised in which there was no counter electrode in front of the discharge needle. This method is called an air discharge method. The air discharge type negative ion generator includes a glass 90, discharge needles 10OA, 10OB, and a counter electrode 110.

Discharge needles 100A, 100B and counter electrode 110 are provided on one main surface 91 of glass 90. Discharge needles 100A and 100B, like discharge needles 60, are not covered with an insulator and their tips are sharp. Then, for the discharge 0, a negative voltage of several kV is applied via the wiring 101.

The counter electrode 110 has a plate shape that extends long in the back direction of the drawing, and is applied with 0 V or a positive voltage via the wiring 111.

Then, for example, local destruction occurs between the discharge needle 100 A and the counter electrode 110, and a discharge occurs in the space 120. In this case, since the discharged gold + 10OA emits electrons, oxygen molecules near the discharge needles 10OA and 10OB collide with the electrons emitted from the discharge needle 10OA. It emits electrons and becomes positive ions. The generated positive ions are drawn by the discharge needles 10OA and 10OB and disappear. Also, the electrons emitted from an oxygen molecule collide with the next oxygen molecule and emit electrons.

On the other hand, in the vicinity of the counter electrode 110 to which 0 V or a positive voltage is applied, electrons generated by the discharge are attracted to the counter electrode 110 and disappear, and positive ions recombine. Ozone or nitrogen oxides.

In this way, the negative ion generator using the air discharge method can generate more negative ions than the negative ion generator where the counter electrode is in front of the discharge needle, but also generates ozone or nitrogen oxides. The opposite electrode discharges at the point of It is common to the negative ion generator located in front of the needle.

Also, Japanese Patent Application Laid-Open No. 11-192001 discloses an ion generator 200 shown in FIG. The ion generator 200 includes a needle electrode 201 and a plate electrode 202. The plate electrode 202 has an opening 204 in the center and is formed in a square frame shape.

On the other hand, the needle electrode 201 is provided so that its axis is substantially parallel to the plate surface of the plate electrode 202 and can cross the discharge frame side 202 d of the plate electrode 202. Can be More specifically, the needle electrode 201 is fixed to an intermediate portion of the ador holder 203 mounted on two parallel frame sides 202c and 202e of the plate electrode 202. .

The needle-shaped electrode 201 has its tip portion 201a directed toward the frame side 202d of the plate electrode 202, and maintains the height with the plate electrode 202 at d. . The idle holder 203 has a sleep 205 on both sides thereof, and an adjustment screw 206 is inserted into the sleep 205.

Screw holes 202 a are formed at substantially equal intervals in the two frame sides 202 c and 202 e of the flat plate electrode 202, and sleep holes 200 are formed in the screw holes 202 a. By inserting the adjustment screw 206 in 5, the needle holder 203 and the needle electrode 201 are fixed at predetermined positions.

Then, when a negative voltage is applied to the needle electrode 201, corona discharge starts between the needle electrode 201 and the plate electrode 202. Thereafter, discharge occurs from the entire needle electrode 201.

The electrons emitted from the needle electrode 201 collide with air molecules and generate a large amount of negative ions.

However, in the above-described conventional technology, a current flows between the two electrodes and a discharge is caused in the air existing between the two electrodes. Positive ions are generated, and the generated positive ions do not disappear, and there is a problem that ozone or nitrogen oxides are generated in large quantities.

In addition, there is a problem that electric current flows between the two electrodes, and if you touch the electrodes by mistake, you get an electric shock.

Furthermore, the air resistance changes with temperature, and the discharge is not stable. DISCLOSURE OF THE INVENTION

Therefore, an object of the present invention is to provide an ion generator that generates ions without causing discharge between two electrodes.

According to the present invention, an ion generator includes a negative electrode and a voltage application circuit. The voltage application circuit has a positive electrode and a negative electrode, and generates a negative voltage from the negative electrode to the negative electrode to generate an electric field between the negative electrode and the positive electrode that is weaker than the dielectric breakdown electric field of the medium existing around the negative electrode. Is applied.

According to the invention, the ion generator includes the negative electrode and the counter electrode. A predetermined negative voltage is applied to the negative electrode. The counter electrode is arranged at a predetermined distance from the negative electrode, and is covered with an insulator.

The predetermined negative voltage is a voltage for generating an electric field between the negative electrode and the counter electrode that is weaker than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode. Further, according to the present invention, the ion generator includes a negative electrode and a counter electrode. The body of the negative electrode except the tip is covered with an insulator. The counter electrode is provided to generate a predetermined electric field between the counter electrode and the negative electrode.

The predetermined electric field is also an electric field in which the dielectric breakdown field of the medium existing between the negative electrode and the counter electrode is weak.

Further, according to the present invention, the ion generator includes a negative electrode, a counter electrode, an insulator, and a voltage application circuit. The insulator is provided between the negative electrode and the counter electrode. The voltage applying circuit applies a negative voltage to the negative electrode for generating an electric field between the negative electrode and the counter electrode that is weaker than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode.

Further, according to the present invention, the ion generator includes a negative electrode, a counter electrode, and an insulator. The counter electrode is arranged to generate a predetermined electric field between the counter electrode and the negative electrode. The insulator is provided between the negative electrode and the counter electrode.

The predetermined electric field is also an electric field in which the dielectric breakdown field of the medium existing between the negative electrode and the counter electrode is weak. Further, according to the present invention, the ion generator includes a case, an insulator, and an electron emitter. The case has an opening. The insulator is formed in contact with the inner wall of the case and the end face of the opening, and is grounded. The electron emitter is disposed in the case and emits electrons from the opening to the outside of the case.

The electron emitter has a negative electrode that emits electrons, a positive electrode, and a negative electrode, and generates an electric field between the negative electrode and the positive electrode that is weaker than a dielectric breakdown electric field of a medium existing around the negative electrode. And a voltage application circuit for applying a negative voltage from the negative electrode to the negative electrode.

Further, according to the present invention, the ion generator includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulator is formed in contact with the inner wall of the case and the end face of the opening, and is grounded. The electron emitter is disposed in the case and emits electrons from the opening to the outside of the case.

The electron emitter includes a negative electrode to which a predetermined negative voltage is applied and emits electrons, and a counter electrode disposed at a predetermined distance from the negative electrode and covered with a second insulator. The predetermined negative voltage is a voltage for generating an electric field between the negative electrode and the counter electrode that is weaker than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode. Further, according to the present invention, the ion generator includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulating part is formed in contact with the inner wall of the case and the end face of the opening, and is grounded. The electron emitter is disposed in the case and emits electrons from the opening to the outside of the case.

The electron emitter includes a negative electrode having a body portion other than a tip portion covered with a second insulator, and a counter electrode for generating a predetermined electric field between the negative electrode and the predetermined electric field. Is an electric field weaker than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode.

The electron emitter includes a negative electrode that emits electrons, a counter electrode, a second insulator provided between the negative electrode and the counter electrode, and a medium that exists between the negative electrode and the counter electrode. A negative voltage is applied to the negative electrode to generate an electric field weaker than the dielectric breakdown electric field between the negative electrode and the counter electrode.

The electron emitter includes a negative electrode that emits electrons, a counter electrode for generating a predetermined electric field between the negative electrode, and a second insulating layer provided between the negative electrode and the counter electrode. The predetermined electric field is an electric field weaker than a dielectric breakdown electric field of a medium existing between the negative electrode and the counter electrode.

Further, according to the present invention, the ion generator includes the first electrode and the second electrode. A predetermined voltage is applied to the first electrode. The second electrode is arranged at a predetermined distance from the first electrode, and is covered with an insulator. The predetermined voltage is used to generate an electric field between the first electrode and the second electrode, the electric field being weaker than a dielectric breakdown electric field of a medium existing between the first electrode and the second electrode. Voltage.

Further, according to the present invention, the ion generating apparatus includes the first electrode, the second electrode, an insulator, and a voltage application circuit. The insulator is provided between the first electrode and the second electrode. The voltage applying circuit generates a voltage for generating an electric field between the first electrode and the second electrode that is weaker than the dielectric breakdown electric field of the medium existing between the first electrode and the second electrode. Applied to the first electrode.

Further, according to the present invention, the ion generator includes the first electrode, the second electrode, and the insulator. The second electrode is an electrode for generating a predetermined electric field between the second electrode and the first electrode. The insulator is provided between the first electrode and the second electrode. Then, the predetermined electric field is an electric field weaker than a dielectric breakdown electric field of a medium existing between the first electrode and the second electrode.

Preferably, the counter electrode is made of a covered electric wire.

Preferably, the insulator covers the counter electrode.

Preferably, the insulator is made of any one of glass, ceramics, resin, and semiconductor. Preferably, the insulator covers a portion of the negative electrode excluding the tip.

Preferably, the insulator comprises first and second insulators, the first insulator covers the counter electrode, and the second insulator covers a portion of the negative electrode excluding the tip.

Preferably, the first and second insulators are made of any one of glass, ceramics, resin, and semiconductor.

Preferably, the second insulator covers the counter electrode.

Preferably, the second insulator covers a portion other than the tip of the negative electrode.

Preferably, the second insulator is composed of first and second electrode insulators, the first electrode insulator covers the counter electrode, and the second electrode insulator is a tip of the negative electrode. Cover the part except the part.

Preferably, the first insulator, the first electrode insulator, and the second electrode insulator are made of any one of glass, ceramics, resin, and semiconductor.

Preferably, the tip of the negative electrode is sharp.

In the negative ion generator according to the present invention, an electric field is generated between the negative electrode (or the first electrode) and the counter electrode (or the second electrode), which is weaker than the electric field at which discharge occurs, and the electrons are transferred to the negative electrode. Released from The electrons emitted from the negative electrode collide with molecules existing between the negative electrode and the counter electrode, generating positive ions and electrons. The generated positive ions are attracted to the negative electrode and disappear at the negative electrode. The generated electrons attach to other molecules and generate negative ions. In the present invention, the electrons may be emitted from air molecules near the negative electrode (or the first electrode).

Therefore, according to the present invention, negative ions or positive ions can be preferentially generated. In addition, when the medium existing between the negative electrode (or the first electrode) and the counter electrode (or the second electrode) is air, generation of ozone can be further suppressed. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a perspective view of a negative ion generator according to Embodiment 1.

FIG. 2 is a sectional structural view of the negative ion generator shown in FIG. You.

FIG. 3 is a plan view of the negative ion generator shown in FIG.

FIG. 4 is a diagram for explaining a negative ion generation mechanism.

FIG. 5 is an electric circuit diagram of the negative ion generator shown in FIG.

Figure 6 is a plan view of the room.

FIG. 7 is a diagram showing the distribution of the amount of negative ions generated by the negative ion generator according to Embodiment 1 in the room shown in FIG.

FIG. 8 is a diagram showing a distribution in the room shown in FIG. 6 of the amount of negative ions generated by the negative ion generator using the air discharge method.

FIG. 9 is a perspective view of a negative ion generator according to Embodiment 2.

FIG. 10 is a sectional structural view of the negative ion generator shown in FIG.

FIG. 11 is a plan view showing an arrangement position of a counter electrode in the negative ion generator shown in FIG.

FIGS. 12 to 15 are diagrams showing modified examples of the counter electrode.

FIG. 16 is a perspective view of a negative ion generator according to Embodiment 3. FIG. 17 is a perspective view of a negative ion generator according to Embodiment 4. FIG. 18 is a cross-sectional structural view of the negative ion generator shown in FIG. 17 as viewed in the direction A.

FIG. 19 is a plan view of the negative ion generator shown in FIG. 17 as viewed in the direction B.

FIG. 20 is a perspective view of a negative ion generator according to Embodiment 5. FIG. 21 is a cross-sectional view of the negative ion generator according to Embodiment 6. FIG. 22 is another sectional view of the negative ion generator according to the sixth embodiment. FIG. 23 is a perspective view showing a modification of the needle electrode.

FIGS. 24 to 31 are diagrams showing modified examples of the electron emitter.

FIG. 32 is a diagram showing a main part of a conventional negative ion generator using a discharge method. FIG. 33 is a diagram showing another main part of a conventional negative ion generator using a discharge method.

FIG. 34 is a diagram showing yet another main part of a conventional negative ion generator using a discharge method. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated.

[Embodiment 1]

Referring to FIG. 1, a negative ion generator 10 according to Embodiment 1 has a case

1, a needle electrode 2, a counter electrode 3, an insulator 4, a support member 5, a power supply circuit 6, and wirings 7 and 8.

The insulator 4, the support member 5, and the power supply circuit 6 are fixed to the bottom 1A of the case 1. Case 1 has opening 11. The needle electrode 2 is made of tungsten having a diameter of 0.5 mm to 1.0 mm. The needle electrode 2 has a sharp tip 2A, and is fixed to the support member 5 so that the tip 2A faces the opening 11 of the case 1. The needle electrode 2 is not covered with an insulator. The needle electrode 2 is not limited to tungsten, but may be any electrical conductor having a high density and a high heat-resistant temperature. The counter electrode 3 is covered with the insulator 4 and is arranged with a predetermined distance from the needle electrode 2. The insulator 4 covers the counter electrode 3. The insulator 4 is made of any one of glass, ceramics, resin and semiconductor. Therefore, the insulator 4 electrically insulates the counter electrode 3. The semiconductor constituting the insulator 4 has a higher specific resistance 1 0 ⁶ Ω cm. That is, the semiconductor constituting the insulator 4 is not doped with either the p-type or the n-type.

The support member 5 is made of an insulating material. Therefore, the support member 5 electrically floats the needle electrode 2 from the case 1. The power supply circuit 6 generates a negative voltage in the range of −5 kV to 19 kV and a ground voltage (0 V). Then, the power supply circuit 6 applies the generated negative voltage to the needle electrode 2 via the wiring 7, and applies the generated ground voltage (0 V) to the counter electrode 3 via the wiring 8. The wiring 7 has one end connected to the needle electrode 2 and the other end connected to the power supply circuit 6. The wiring 8 has one end connected to the counter electrode 3 and the other end connected to the power supply circuit 6. Therefore, the needle electrode 2 receives a negative voltage in the range of 15 kV to 19 kV from the power supply circuit 6 via the wiring 7, and the counter electrode 3 receives the ground voltage (0 V)

With reference to FIG. 2, a cross-sectional structure of the negative ion generator 10 shown in FIG. 1 as viewed in the direction A will be described. The insulator 4, the support member 5, and the power supply circuit 6 are in contact with the bottom 1A of the case 1. The counter electrode 3 and the insulator 4 are arranged on the other side of the needle electrode 2. The power supply circuit 6 is arranged on the other side of the needle electrode 2 and the support member 5.

The distance L1 between the tip 2A of the needle electrode 2 and the opening 11 of the case 1 is in the range of 0 cm to 3 cm, and preferably about lcm. The distance L2 of the opening 11 in a direction perpendicular to the bottom surface 1A of the case 1 is in the range of 0.5 cm to lcm, preferably in the range of 0.5 cm to 0.7 cm. is there.

With reference to FIG. 3, the plane structure of the negative ion generator 10 shown in FIG. 1 as viewed in the direction B will be described. The needle-shaped electrode 2 is fixed by the support member 5 such that the tip 2A is located at a distance L1 from the opening 11 of the case 1. The counter electrode 3 and the insulator 4 are arranged at a distance L 4 from the needle electrode 2. The distance L4 depends on the material of the insulator 4. When the insulator 4 is made of glass, the distance L4 is in the range of 0111111 to 15111111, and when the insulator 4 is made of Teflon, the distance L4 is 30 mm. The distance L3 of the opening 11 in the direction parallel to the bottom surface 1A of the case 1 is in a range of 0.5 cm to: Lcm, and preferably in a range of 0.5 cm to 0.7 cm. It is. The counter electrode 3 and the insulator 4 may be arranged closer to the opening 11 than the tip 2A of the needle electrode 2, or may be arranged between the support member 5 and the case 1.

— When a negative voltage in the range of 5 kV to 19 kV is applied to the needle electrode 2 and a ground voltage (0 V) is applied to the counter electrode 3, the negative ion generator 10 opens the negative ion through the opening 1. Release from 1. The mechanism by which the negative ion generator 10 emits negative ions will be described with reference to FIG. When a negative voltage is applied to the needle electrode 2 and a ground voltage (OV) is applied to the counter electrode 3, the needle electrode 2 directs electrons from its tip 2A toward the opening 11 of the case 1. Emitting (or the needle-shaped electrode 2 emits electrons from air molecules near the tip 2A. The same applies hereinafter). The emitted electrons collide with oxygen molecules 31 and nitrogen molecules 32 in the air. Then, the oxygen molecule 31 emits an electron 31 B and changes to a positive ion 31 A. Further, the nitrogen molecule 32 emits an electron 32B and changes to a positive ion 32A. Then, the electrons 31B and 32B adhere to other oxygen molecules or nitrogen molecules, and negative ions 33 and 34 are generated.

The positive ions 31A and 32A generated by the collision of the electrons are attracted to the needle electrode 2 by the electric field generated between the needle electrode 2 and the counter electrode 3, and disappear at the needle electrode 2.

As a result, the negative ion generator 10 generates only negative ions 33 and 34.

When a negative voltage in the range of _5 kV to 19 kV is applied to the needle electrode 2, the electrons rush out of the needle electrode 2, and the oxygen molecules 31 or in the region 40 near the needle electrode 2. Collision with nitrogen molecule 32. Then, in the region 40, the oxygen molecule 31 and the nitrogen molecule 32 emit electrons 31B and 32B, respectively, and change into positive ions 31A and 32A. The emitted electrons 31 B and 32 B diffuse in the air and adhere to other oxygen molecules or nitrogen molecules, generating negative ions 33 and 34. As described above, the negative ion generator 10 emits electrons from the needle electrode 2 and ionizes molecules in the air near the needle electrode 2 (region 40) to generate positive ions and electrons. The generated electrons are further diffused in a direction away from the needle electrode 2 by the negative voltage applied to the needle electrode 2, and the positive ions are attracted by the negative voltage applied to the needle electrode 2. As a result, the negative ion generator 10 can diffuse only the electrons into the air and generate negative ions around.

FIG. 5 shows a circuit diagram of the needle electrode 2, the counter electrode, the wirings 7, 8, and the power supply circuit 6 in the negative ion generator 10. The power supply 6A is a power supply for applying a negative voltage in the range of 15 kV to 19 kV to the needle electrode 2.

Insert an ammeter between the power supply 6 A and the needle electrode 2 to flow from the power supply 6 A to the needle electrode 2. The measured current was 8 μA. In addition, an ammeter was inserted between the counter electrode 3 to which the ground voltage (0 V) was applied and the ground node GND, and the current flowing from the counter electrode 3 to the ground node GND was measured to be OA.

Therefore, no current flows between the needle electrode 2 and the counter electrode 3. That is, no current flows through the air existing between the needle electrode 2 and the counter electrode 3. The fact that no current flows through the air existing between the needle electrode 2 and the counter electrode 3 means that no discharge occurs between the needle electrode 2 and the counter electrode 3.

When the insulator 4 is made of glass, the distance L 4 between the needle electrode 2 and the counter electrode 3 is, for example, 10 mm, and the negative voltage applied to the needle electrode 2 is 1 kV. Therefore, the electric field between the needle electrode 2 and the counter electrode 3 is in the range of -5 kVZcm to -19 kV / cm.

An electric field of 10 kV / cm or more is required to generate a discharge in air at 1 atm.Therefore, the negative voltage applied to the needle electrode 2 is set between the needle electrode 2 and the counter electrode 3. It is a voltage to generate an electric field that is weaker than the electric field that causes a discharge to occur (that is, the breakdown field of air).

Therefore, the present invention is characterized in that an electric field that is weaker than the electric field in which a discharge occurs between the needle electrode 2 and the counter electrode 3 (that is, the insulating breakdown electric field of air) is generated. Referring again to FIG. 1, the power supply circuit 6 applies a negative voltage in the range of −5 kV to −19 kV to the needle electrode 2 via the wiring 7 and the ground voltage (0 V) via the wiring 8. ) Is applied to the counter electrode 3, an electric field weaker than the insulating rupture electric field of air is generated between the needle electrode 2 and the counter electrode 3, and the needle electrode 2 has the tip 2 A or the tip 2. An electron is emitted from the air molecule near A. The emitted electrons collide with oxygen molecules 31 or nitrogen molecules 32 in the air to generate positive ions 31A and 32A and electrons 31B and 32B. Then, the needle electrode 2 attracts the brass ions generated in the vicinity of the tip 2 A, and the electrons 31 B and 32 B emitted from the oxygen molecule 31 or the nitrogen molecule 32 become other oxygen molecules or nitrogen molecules. To form negative ions 33 and 34. Then, the negative ion generator 10 discharges negative ions 33 and 34 from the opening 11.

Table 1 shows the first to tenth negative ion generators according to the present invention. This is the result of measuring the amount of generated negative ions. For comparison, the measurement results of a negative ion generator using the air discharge method are shown.

I measurement ranking

The unit is 10,000 pieces / cm ³

1st method of the present invention 2nd method of the present invention 3rd time

Measuring instrument maker of the present invention

Humidity Type No.1 No.2 No.3 No.4 No.5 No.6 No.F No.8 No.9 No.10 No.10 Type Flat-discharge Flat discharge Discharge discharge

Measurement method Average Andean electricity

25 50 ΓΓΟ-201Α 42 90 84 85 88 93 41 78 82 76 75 75 35 82.6 39.3 Plate type

Zima Tech

SC-10 7.2 15.0 14.8 15.8 15.2 15.1 7.0 12.5 12.5 12.1 12.1 12.6 7.3 13.7 7.2

Double cylinder method

Andean electric

26 58 ITC-201A 34 89 83 86 86 91 38 83 84 77 77 79 39 83.5 37 Plate type

Sigma

SC-10 4.9 13.9 12.5 13.4 13.3 13.1 5.8 12.3 12.2 1 1.8 1 1.8 1 1.4 5.5 12.5 5.4

Double cylinder method

The measuring instrument which measured the negative ion is as follows. Measuring instrument (Model: Andes Electric ITC-001A) with flat plate type measuring method (referred to as measuring instrument A) and Sigma Tech SC-10 with double cylinder type measuring method The amount of negative ions was measured using a measuring instrument (referred to as measuring instrument B).

The measurement order is as follows. First, the negative ion generator using the air discharge method is measured, and then the negative ion amount is sequentially measured for the first to fifth negative ion generators according to the present invention. Then, the amount of negative ions is measured again for the negative ion generator using the air discharge method, and thereafter, the negative ion amounts are sequentially measured for the negative ion generators Nos. 6 to 10 of the present invention. Finally, the amount of negative ions is measured for the negative ion generator using the air discharge method.

The above-described measurement was performed under the conditions of temperature: 25 ° C, humidity: 50%, and temperature: 26 ° C, humidity: 58%.

As a result, the negative ion generator according to the present invention generates more than twice as many negative ions as the negative ion generator using the air discharge method, regardless of the measurement using any of the measuring devices A and B. I found out. Also, there is almost no change in the amount of negative ions due to the change in humidity from 50% to 58%.

A negative ion generator using an air discharge method generates the most negative ions in a device that generates negative ions using a discharge method, but the negative ion generator according to the present invention generates negative ions using the air discharge method. It turned out to generate more negative ions than the device.

Table 2 shows the dependence of the amount of negative ions on the distance from the negative ion generator. Table 2

Measuring instrument Sigma Tech SC-10 (double cylinder type) Unit 10,000 m ³

The measuring device B described above was used. The measurement conditions were as follows: temperature: 25 ° C, humidity: 5 1%. It has been clarified that the negative ion generator according to the present invention generates more negative ions than the air discharge type negative ion generator at all measured distances.

Also, the amount of negative ions generated by the negative ion generator using the air discharge method is 59% at the position of a distance of 3 mm with respect to the amount of negative ions generated by the negative ion generator according to the present invention. Is 43% at a distance of 1 m. This means that the negative ion generator according to the present invention can generate negative ions in a wider range.

Table 3 shows the results of measuring the amount of negative ions at the positions of 3 mm and 10 cm from the negative ion generator for the first to tenth negative ion generators according to the present invention.

Table 3

26 ° C 58% Measuring instrument Sigma Tech SC-10 (double cylinder type) Unit 10,000 m ³

In 3 mm distance, the average I straight of the generated negative ions amount by Unit 1 to 1 0 Units 7 6 4 are thousands cm ^3, in 1 0 cm distance, Unit 1 to 1 0 Unit The average value of the amount of negative ions generated by the method is 430,000 Zcm ³ . At the two distances, the variation in the amount of negative ions due to the equipment between Units 1 to 10 is small. Therefore, the negative ion generator according to the present invention has sufficient reproducibility as an apparatus.

Table 4 shows a comparison of the amount of ozone generated between the minus ion generator according to the present invention and the negative ion generator using the air discharge method. The measurement location is in front of the device. The measurement conditions were as follows: temperature: 25 ° C, humidity: 50%. Furthermore, the measuring device is an ozone moter EG-500 from EBARA BUSINESS CO., LTD. Table 4

At both the center and the left, the amount of ozone generated by the negative ion generator according to the present invention is below the detection limit, and is two orders of magnitude less than that of the negative ion generator using the air discharge method.

Table 5 compares the ozone amounts of a plurality of devices of the negative ion generator according to the present invention and the negative ion generator using the air discharge method. The measurement conditions were as follows: temperature: 22 ° C, humidity: 60%.

Table 5

In the case of the negative ion generator according to the present invention, the amount of ozone generated is lower than the detection limit for all devices, and the amount of ozone generated is smaller than in the case of the negative ion generator using the air discharge method.

FIG. 6 shows a plan view of a room 30 having a fixed size. The length L7 is 3.46 m and the length L8 is 4.36 m. At each of the points P1 to P6 in the room 30, the amount of negative ions generated by the negative ion generator 10 was measured. Points Pl, P2, P3, and P5 are located at the four corners of room 30, point P4 is located at the midpoint between points P3 and P5, and point P6 is , Negative ion generator Located at 10 m from 10 m.

Table 6 shows the measurement results at each point P1 to P6 of the amount of negative ions generated by the negative ion generator 10 according to the present invention. Table 6

Table 6 shows the measurement results at points P1 to P6 of the amount of negative ions generated by the negative ion generator using the air discharge method for comparison. The measurement conditions are as follows: temperature: 30 ° C, humidity: 56%.

The amount of negative ion generated by the negative ion generator 1 ° according to the present invention is measured at points PI, P2, P6, P4, P3, regardless of whether it is measured by any of the measuring devices A and B. It decreases in the order of P5, and decreases the most at point P5.

On the other hand, the amount of negative ions generated by the negative ion generator using the air discharge method decreases in the order of points PI, P2, P6, P3, P4, P5, and decreases most at point P5. .

Then, it was found that the negative ion generator 10 according to the present invention can generate more negative ions at all of the points P1 to P6 than the negative ion generator using the air discharge method. That is, the negative ion generator 10 according to the present invention can generate more negative ions in the area of 15.08 m ² (= 4.36 m × 3.46 m) than the air discharge type negative ion generator.

FIG. 7 shows the distribution of the amount of negative ions at points P1 to P6 generated by the negative ion generator 10 according to the present invention. FIG. 8 shows the distribution at the points P1 to P6 of the amount of negative ions generated by the negative ion generator using the aerial discharge method. The negative ion amount shown in FIGS. 7 and 8 was measured by the measuring device B.

7 and 8, the vertical axis indicates the amount of negative ions. FIGS. 7 and 8 show that the negative ion generator 10 according to the present invention can generate more negative ions in the room 30 than the negative ion generator using the air discharge method. Table 7 shows the measurement results of the amount of ON generated at the waterfall.

Table 7

30 ° C 60% RH

The amount of negative ions shown in Table 7 is measured by measuring instrument A, and the measurement conditions are temperature of 30 ° C and humidity of 60%. The measurement locations are about 15 m horizontally from the basin and about 30 m horizontally from the basin. The position of about 15 m from the basin is detected negative ions 20000-30000 pieces / cm ³ is at the position of about 3 Om from basin, negative ions from 5,000 to 8,000 pieces Zc m ³ was detected. In general, have been evaluated to be good for your health minus the amount of ions present in the vicinity of the basin, negative ions amount of health good, and this is the corner Tsu early in the range of thousands to tens of thousands pieces / cm ³ Was.

As shown in Table 6, the negative ion generator 10 according to the present invention generates a negative ion amount of 22000 pieces / cm ³ or more in the entire area of the room 30 having a size of about 15 m ² . This value is the value measured by measuring instrument A for comparison with the measurement results in Table 7.

Therefore, it has been found that the negative ion generator 10 according to the present invention can generate a larger amount of negative ions than the amount of negative ions that are evaluated to be good for health.

As described above, the negative ion generator 10 according to the present invention can generate more negative ions in a wider range and can suppress the generation of ozone as compared with the conventional negative ion generator.

Further, the negative ion generator 10 according to the present invention can generate more negative ions than the amount of negative ions generated in nature.

The power supply circuit 6 forms a “voltage application circuit”. In addition, the needle electrode 2, the counter electrode 3, the insulator 4, the power supply circuit 6, and the wirings 7 and 8 constitute an “electron emitter”.

[Embodiment 2] Referring to FIG. 9, negative ion generator 1 OA according to Embodiment 2 is obtained by adding insulator 9 to negative ion generator 10 and removing insulator 4, and otherwise generates negative ions. Same as device 10.

The insulator 9 covers the body 2C excluding the front end 2A and the rear end 2B of the needle electrode 2. The insulator 9 is made of any one of glass, ceramics, resin, and semiconductor. The body 2 C of the needle electrode 2 covered with the insulator 9 constitutes the negative electrode 20. The negative electrode 20 is fixed to the support member 5 by the body 2 C and the insulator 9 penetrating the support member 5. The rear end 2 B of the needle electrode 2 is connected to the wiring 7.

In the negative ion generator 1OA, the counter electrode 3 is not covered, and the body 2C of the needle electrode 2 is covered with the insulator 9. That is, by covering a part of the needle electrode 2 with the insulator 9, current is prevented from flowing between the needle electrode 2 and the counter electrode 3.

With reference to FIG. 10, the cross-sectional structure of the negative ion generator 1OA shown in FIG. 9 as viewed in the direction A will be described. The counter electrode 3, the support member 5, and the power supply circuit 6 are installed on the bottom 1A of the case 1. Then, the negative electrode 20 is fixed by the support member 5 when the body 2 C and the insulator 9 penetrate the support member 5. Other details are the same as those described in FIG.

The planar structure of the negative ion generator 1OA shown in FIG. 9 as viewed in the direction B is the same as the planar structure shown in FIG.

With reference to FIG. 11, the arrangement position of the counter electrode 3 will be described. Assuming that the direction from the front end 2A to the rear end 2B of the negative electrode 20 is the X direction, the counter electrode 3 is usually arranged to face the center cp of the insulator 9 in the X direction. However, the counter electrode 3 is not limited to this, and may be arranged on the X direction side with respect to the surface 15 where the tip 2A of the needle electrode 2 contacts. Therefore, the counter electrode 3 may be arranged at any of the points C to F. If the counter electrode 3 is arranged on the opposite side to the X direction from the plane 15, the needle electrode 2 not covered with the insulator and the counter electrode 3 face each other, and the needle electrode 2 and the counter electrode Since the discharge easily occurs between the counter electrode 3 and the counter electrode 3, the arrangement position of the counter electrode 3 is limited as described above in order to prevent this. Others are the same as the negative ion generator 10.

Referring again to FIG. 9, the power supply circuit 6 applies a negative voltage of 15 kV to 19 kV to the needle electrode 2 of the negative electrode 20 via the wiring 7, and is grounded via the wiring 8. When a voltage (0 V) is applied to the opposite electrode 3, an electric field weaker than the insulating breakdown electric field of air is generated between the needle electrode 2 and the opposite electrode 3, and the negative electrode 20 A emits electrons. Alternatively, the negative electrode 20 emits electrons from air molecules near the tip 2A. The emitted electrons collide with oxygen molecules 31 or nitrogen molecules 32 in the air to generate positive ions 31 A and 32 A and electrons 31 B and 32 B. Then, the negative electrode 20 attracts the positive ions 31 A and 32 A generated near the tip 2 A, and the electrons 31 B and 3 emitted from the oxygen molecule 31 or the nitrogen molecule 32 are drawn. 2B attaches to other oxygen or nitrogen molecules to produce negative ions 33,34. Then, the negative ion generator 1 O A emits negative ions 33 and 34 from the opening 11.

In this manner, the needle electrode 2 and the counter electrode are not covered with the insulator 9 but the body 2 C of the needle electrode 2 to which the negative voltage is applied is covered with the insulator 9. An electric field weaker than the dielectric breakdown electric field of air can be generated between them, and many negative ions can be generated.

A modified example of the counter electrode 3 will be described with reference to FIGS. Referring to FIG. 12, counter electrode 3 may be counter electrode 3A bent in an arc along the circumferential direction of insulator 9 of negative electrode 20.

Referring to FIG. 13, the counter electrode 3 may be a linear counter electrode 3B. Therefore, the counter electrode 3B may be more specifically made of a normal wiring material.

Referring to FIG. 14, counter electrode 3 may be ring-shaped counter electrode 3C having insulator 9 of negative electrode 20 as a central axis.

Referring to FIG. 15, counter electrode 3 may be counter electrode 3D spirally bent in the axial direction of negative electrode 20.

When the counter electrodes 3 A to 3 D shown in FIGS. 12 to 15 are used for the negative ion generator 1 OA, the electric field between the needle electrode 2 and the counter electrode 3 is weaker than the insulating breakdown electric field of air. An electric field is generated, which can suppress the generation of ozone and generate many negative ions.

The counter electrodes 3A to 3D shown in FIGS. 12 to 15 may be used for the negative ion generator 10 in the first embodiment.

The negative electrode 20, the counter electrode 3, the power supply circuit 6 and the wirings 7 and 8 constitute an “electron emitter”.

The rest is the same as the first embodiment.

[Embodiment 3]

Referring to FIG. 16, negative ion generator 1 OB according to the third embodiment is obtained by adding insulator 9 to negative ion generator 10, and is otherwise the same as negative ion generator 10. is there.

Needle electrode 2 and insulator 9 constitute negative electrode 20. Therefore, the specific material of the insulator 9, the method of fixing the negative electrode 20 to the support member 5, and the method of connecting the negative electrode 20 to the wiring 7 are as described in the second embodiment. In the negative ion generator 10B, the needle electrode 2 and the counter electrode 3 are covered with insulators 4 and 9, respectively. Therefore, counter electrode 3 and insulator 4 may be arranged at any position in case 1 as described in the first embodiment.

ft In the negative ion generator 10 B in which the electrode 2 and the counter electrode 3 are covered with insulators 9 and 4, respectively, a negative voltage of -5 kV to 19 kV is applied to the needle via the wiring 7. When a ground voltage (0 V) is applied to the opposing electrode 3 via the wiring 8, an electric field weaker than the insulating rupture electric field of air is applied between the needle electrode 2 and the opposing electrode 3. And many negative ions are generated.

The negative electrode 20, the counter electrode 3, the insulator 4, the power supply circuit 6 and the wirings 7 and 8 constitute an “electron emitter”.

Others are the same as the first and second embodiments.

[Embodiment 4]

Referring to FIG. 17, negative ion generator 1 OC according to the fourth embodiment is obtained by replacing insulator 4 of negative ion generator 10 with insulator 12. Is the same as that of the negative ion generator 10. '

The insulator 12 is arranged between the needle electrode 2 and the counter electrode 3. In other words, the insulator 1 2 does not cover the needle electrode 2 or the counter electrode 3, but rather separates the needle electrode 2 and the counter electrode 3 from each other to spatially separate the needle electrode 2 and the counter electrode 3. Be placed. The insulator 12 is made of any of glass, ceramics, and resin. The insulator 12 has a height H that is at least about 3 mm higher than the counter electrode 3, a width W that is at least about 3 mm wider than the width of the counter electrode 3, and a depth D that is about 0.1 mm or more. Having. And the depth D is determined by the insulation capacity of the insulator. An insulator 1 2, 1 0 ⁶ Omega semiconductor having a cm or more resistivity (i.e., a semiconductor that is not doped with p-type or n-type) may be constituted by. In this case, the depth D of the insulator 12 is on the order of several hundred microns.

The negative ion generator 1 OC does not cover both the needle electrode 2 and the counter electrode 3 with an insulator, but places the insulator 12 between the needle electrode 2 and the counter electrode 3 to form a needle. An electric field weaker than the dielectric breakdown electric field of air is generated between the electrode 2 and the counter electrode 3.

With reference to FIG. 18, the cross-sectional structure of the negative ion generator 1 OC shown in FIG. 17 as viewed in the direction A will be described. The support member 5, the power supply circuit 6, and the insulator 12 are arranged on the bottom surface 1A of the case 1. The insulator 12 is arranged on the other side of the needle electrode 2, and the counter electrode 3 is further arranged on the other side of the insulator 12 (in FIG. 18, the counter electrode 3 is Hidden by object 12). Other details are the same as those described in FIG. The planar structure of the negative ion generator 1 OC shown in FIG. 17 as viewed in the direction B will be described with reference to FIGS. The insulator 12 is disposed in parallel with the needle electrode 2 at a distance L 5 from the force of the needle electrode 2. Further, the counter electrode 3 is arranged at a position separated from the insulator 12 by a distance L6. Distance L5 is in the range of 0-3 O mm, and distance L6 is in the range of 0-3 O mm.

Others are the same as the description of FIG.

When a negative voltage is applied to the needle electrode 2 and a ground voltage (0 V) is applied to the counter voltage 3, an electric field is generated from the counter electrode 3 to the needle electrode 2. And the electric field The lines of electric force in this case start from the counter electrode 3 and enter the needle electrode 2. In this case, since the lines of electric force have the property of being concentrated on sharp points, the lines of electric force tend to concentrate on the tip 2 A of the needle electrode 2. Therefore, the insulator 12 is preferably arranged at a position that interrupts a straight line connecting the counter electrode 3 and the tip 2A of the needle electrode 2. In the negative ion generator 10 C in which the needle electrode 2 and the counter electrode 3 are separated by the insulator 12, a negative voltage of 15 kV to 19 kV is applied to the needle electrode 2 via the wiring 7. When a ground voltage (0 V) is applied to the counter electrode 3 via the wiring 8, an electric field weaker than the insulating breakdown electric field of air is generated between the needle electrode 2 and the counter electrode 3, Many negative ions are generated.

Needle electrode 2, counter electrode 3, insulator 12, power supply circuit 6, and wiring 7, 8

Construct "electron emitter".

The rest is the same as the first embodiment.

[Embodiment 5]

Referring to FIG. 20, negative ion generator 10 D according to Embodiment 5 is the same as negative ion generator 10 except that counter electrode 3, insulator 4 and wiring 8 are omitted. It is the same as the ion generator 10.

The power supply circuit 6 applies a negative voltage of 15 kV to 19 kV to the needle electrode 2 via the wiring 7 and outputs a ground voltage (0 V) to the terminal 66. Then, an electric field weaker than the dielectric breakdown electric field of air is generated between the needle electrode 2 and the terminal 66 of the power supply circuit 6. The needle-shaped electrode 2 emits electrons from the tip 2A, and the emitted electrons collide with oxygen molecules or nitrogen molecules in the air to generate positive ions and electrons. The needle-shaped electrode 2 further sucks the generated positive ions to extinguish the positive ions generated in the air. Then, the electrons emitted from the oxygen molecule or the nitrogen molecule are attached to another oxygen molecule or the nitrogen molecule, and a negative ion is generated.

In the negative ion generator 1 O D, the needle electrode 2 and the terminal 6 of the power supply circuit 6

Since no discharge occurs between the positive electrode 6 and the positive electrode 6, positive ions are generated only near the tip 2 A of the needle electrode 2. Therefore, unlike the negative ion generator 1 OD, the generation of ozone can be suppressed and a large amount of negative ions can be generated without providing the counter electrode 3 in particular. The needle electrode 2, the power supply circuit 6, and the wiring 7 constitute an “electron emitter”. The negative ion generator according to the fifth embodiment is obtained by removing the counter electrode 3 and the wiring 8 from the negative ion generator 1 OA according to the second embodiment or the negative ion generator 10 B according to the third embodiment. The counter electrode 3, the insulator 4, and the wiring 8 may be deleted, or the counter electrode 3, the insulator 12, and the wiring 8 may be deleted from the negative ion generator 10C according to the fourth embodiment. . Other configurations are the same as those of the first, second, third, and fourth embodiments.

[Embodiment 6]

The negative ion generator according to Embodiment 6 is a negative ion generator in which the inner wall of case 1 of negative ion generator 10 is covered with an insulator. The sectional structure of the negative ion generator 1 OE according to the sixth embodiment will be described with reference to FIG. The inner wall of case 1 is covered with insulator 13. The case 1 has a force 11 having an opening 11. The end faces 11 A and 11 A of the opening 11 are also covered with an insulator 13. That is, the insulator 13 covers the inner wall of the case 1 and the end faces 11 A, 11 A of the opening 11 so that the electrons emitted from the needle electrode 2 are not charged to the case 1. And the insulator 13 is grounded. The insulator 13 is made of teflon or insulator. Further, the insulator 13 may be made of any one of ceramics, resin, and semiconductor.

The inner wall of the case 1 and the end faces 11 A and 11 A of the opening 11 are covered with the insulator 13 for the following reasons. If the insulator 13 is not provided, a part of the electrons emitted from the needle electrode 2 are charged on the inner wall of the case 1 or the end faces 11 A and 11 A of the opening 11. Then, even if the case 1 is made of an insulating material, electricity is conducted, and a discharge occurs between the case 1 and the needle electrode 2. Therefore, in order to prevent a discharge between the case 1 and the needle electrode 2 due to the charging of the case 1, the inner wall of the case 1 and the end surface 11 A, 11 A of the opening 11 are formed. Are covered by insulator 13.

The counter electrode 3, the insulator 4, the support member 5, and the power supply circuit 6 are arranged on the grounded insulator 13.

The opening 11 of the negative ion generator 1 OE shown in Fig. 21 has an end face 11 A, 11 1 A is tapered. As a result, the generated electrons and negative ions are easily released from the opening 11 to the outside.

Others are the same as the description of FIG.

As shown in FIG. 22, the negative ion generator 10 E has an end face 11 A, 11 A of the opening 11 covered with the insulator 13, even if a taper is not formed. Good.

In the negative ion generator 10 E, the power supply circuit 6 applies a negative voltage in the range of 15 kV to 19 kV to the needle electrode 2 via the wiring 7 and connects the ground voltage (0 V). When an electric field is applied to the counter electrode 3 through the electrode 8, an electric field weaker than the insulated breaking electric field of air is generated between the needle electrode 2 and the counter electrode 3, and the needle electrode 2 transmits electrons to the opening 11 1 Release in the direction of. Then, near the tip 2A of the needle electrode 2, the electrons emitted from the needle electrode 2 collide with oxygen molecules or nitrogen molecules in the air, generating positive ions and negative electrons. The positive ions are attracted to the needle electrode 2 and disappear, and the electrons adhere to other oxygen molecules or nitrogen molecules in the air to generate negative ions. Then, the negative ion generator 1 O E discharges electrons and negative ions from the opening 11 to the outside. In this case, since the inner wall and the end faces 11 A and 11 A of the opening 11 are covered with the insulator 13, the case 1 cannot be charged by electrons emitted from the needle electrode 2. No discharge occurs between case 1 and needle electrode 2.

Therefore, the negative ion generator 10E can stably generate negative ions.

The needle electrode 2, the counter electrode 3, the insulator 4, the power supply circuit 6, the wirings 7 and 8, and the insulator 13 constitute an “electron emitter”.

Further, the insulator 13 may be applied to any of the negative ion generators 1OA, 10B, 10C and 10D. Also in this case, no discharge occurs between the case 1 and the needle electrode 2 as in the case of the negative ion generator 10E.

Other configurations are the same as those of the first to fifth embodiments.

The needle electrode 2 may be the needle electrode 21 shown in FIG. The needle-shaped electrode 21 is composed of a plate-shaped main body 210, pointed ends 211, 212, and an insulator 211. tip Parts 211 and 212 are attached to or formed as part of body 210. The insulator 213 is made of resin, and covers the main body 210 except for the pointed ends 211 and 212.

Even when the needle-shaped electrode 21 is used, an electric field weaker than the dielectric breakdown electric field of air is generated between the needle-shaped electrode 21 and the counter electrode 3, and the generation of ozone is suppressed to generate a lot of negative ions. Can be.

Further, since the needle-shaped electrode 21 has the plurality of pointed portions 211 and 212, more electrons can be emitted, and as a result, more negative ions can be generated.

A modification of the electron emitter including the needle electrode 2 and the counter electrode 3 will be described with reference to FIGS.

Referring to FIG. 24, electron emitter 140 includes two needle electrodes 2, 2, printed circuit board 130 having wiring 131, support member 5, and wirings 7 and 8. The two needle electrodes 2 and 2 are partially bent at right angles. Then, the two needle electrodes 2 are fixed to the support member 5 by inserting the portion bent at a right angle into the support member 5. The wiring 7 is connected to the needle electrodes 2 in the support member 5. In addition, a printed circuit board 130 having a wiring 131 is disposed below the two needle electrodes 2, 2, and the wiring 8 is connected to the wiring 131. In this case, the printed circuit board 130 is disposed so as to be interposed between the wiring 131 and the two needle electrodes 2.

The power supply circuit 6 applies a negative voltage in the range of 15 kV to 19 kV to the needle electrode via the wiring 7

When a grounding voltage (0V) is applied to the wiring 131 via the torsion wire 8 and a wiring U is applied to the wirings 2 and 2, the insulation between the needle electrodes 2 and 2 and the wiring 131 as the counter electrode 3 is made of an insulating material. Since it is insulated by a certain print substrate 130, no discharge occurs between the needle electrodes 2 and 2 and the wiring 131. As a result, the above-described mechanism can suppress generation of ozone and generate many negative ions.

Referring to FIG. 25, electron emitter 141 includes two needle electrodes 2, 2, printed circuit board 130 having wiring 131, and wirings 7 and 8. The two needle electrodes 2, 2 are partially bent at a right angle. Then, by inserting the portion bent at a right angle into the print substrate 130, the two needle electrodes 2, 2 have the wiring 131. Fixed to the printed circuit board 130. In this case, the two needle electrodes 2 and 2 are fixed to the surface opposite to the surface of the printed circuit board 130 on which the wiring 131 is provided. Then, the wiring 7 is connected to the two needle electrodes 2 and 2, and the wiring 8 is connected to the wiring 131.

Like the electron emitter 140, the electron emitter 141 can suppress generation of ozone and generate many negative ions. In the case of the electron emitter 141, the printed circuit board 130 having the wiring 131 is formed of a support member 5 for the needle electrodes 2 and 2 and an insulator 1 2 provided between the needle electrode 2 and the counter electrode 3. Since it functions as an electron emitter, an electron emitter can be formed more easily.

Referring to FIG. 26, electron emitter 142 includes two needle electrodes 2 and 2, printed circuit boards 13 OA and 13 OB, wiring 131, and wirings 7 and 8. The two needle electrodes 2, 2 are partially bent at right angles. Then, by inserting the portion bent at a right angle into the printed circuit board 13 OA, the two needle electrodes 2 are fixed to one surface of the printed circuit board 13 OA. The wiring 7 is connected to the two needle electrodes 2 and 2.

The wiring 131 is formed on the surface of one of the printed board 13 OA and the printed board 13 OB, and is sandwiched between the printed board 130A and the printed board 130B. Then, the wiring 131 is connected to the wiring 8.

In the electron emitter 142, the wiring 131 serving as the counter electrode 3 is insulated from the needle electrodes 2 and 2 by the two printed substrates 13OA and 130B. This suppresses the generation of ozone and generates many negative ions.

Referring to FIG. 27, an electron emitter 143 is the same as the electron emitter 142 shown in FIG. 25 except that the needle-shaped electrodes 2, 2 are replaced with linear tl "-shaped electrodes 2, 2. Is the same as the electron emitter 141.-Referring to Fig. 28, the electron emitter 144 is different from the electron emitter 142 shown in Fig. 26 in that the needle electrodes 2 and 2 are linear needle electrodes. In place of 2, 2, the other is the same as the electron emitter 142.

Referring to FIG. 29, the electron emitter 145 includes two needle electrodes 2 and 2 and wirings 1 3 1 includes a printed circuit board 130 having 1, an insulator 13 2, and wiring 8. The two needle electrodes 2 have a linear shape. The needle electrodes 2 are fixed to the printed circuit board 130 by inserting a part of the needle electrodes 2 into the printed circuit board 130. In the electron emitter 145, the wiring 313 is arranged on the same surface as the surface of the print substrate 130 to which the needle electrodes 2, 2 are fixed. Then, the insulators 13 2 are formed on the surface of the printed circuit board 130 so as to cover the wirings 13 1. The wiring 7 is connected to the needle electrodes 2 and 2, and the wiring 8 is connected to the wiring 13 1.

In the electron emitter 1 45, the wiring 13 1 as the counter electrode 3 is insulated from the needle electrodes 2 and 2 by the insulator 13 2, so that the electron emitter 1 45 has the above-described mechanism. Following the same mechanism, it suppresses the generation of ozone and generates more negative ions.

Referring to FIG. 30, electron emitter 146 includes needle electrode 2 (2 A), counter electrode 133, and insulator 134. The counter electrode 1 33 is formed of a tube having a diameter larger than the diameter of the needle electrode 2. The inner wall and the end face of the counter electrode 133 are covered with an insulator 134. Also, the tl "-shaped electrode 2 enters into the counter electrode 13 3, and only the tip 2 A exits from the counter electrode 13 3. The needle-shaped electrode 2 is connected to the wiring 7 and _ 5 k A negative voltage of V to 19 kV is applied, and the counter electrode 13 3 is connected to the wiring 8 and a ground voltage (0 V) is applied.

In the electron emitter 146, the counter electrode 133 is insulated from the cathode electrode 2 by the insulator 134, so that the electron emitter 146 follows the same mechanism as described above, Suppress the generation of ozone and generate more negative ions.

Referring to FIG. 31, electron emitter 147 includes needle electrode 2 and wirings 135 and 136. Wirings 135 and 133 consist of normal wiring covered with an insulator. The wires 135 and 136 are arranged such that one end thereof is in contact with the needle electrode 2. In this case, one end in contact with the needle electrode 2 is covered with an insulator.

The needle electrode 2 is connected to the wiring 7 and a negative voltage of 15 kV to 19 kV is applied. Wirings 135 and 136 are connected to wiring 8, and a ground voltage (0 V) is applied. In the electron emitter 147, the wirings 135, 1336 as the counter electrode 3 are disconnected. Since it is insulated from the needle electrode 2 by the edge, the electron emitter 147 suppresses the generation of ozone and generates more negative ions according to the same mechanism as the above-described mechanism.

Regardless of whether the electron emitters 140 to 147 shown in FIGS. 24 to 31 are applied to any of the negative ion generators 10 to 10E, as described above, the generation of ozone is suppressed, More negative ions can be generated.

In the above description, the medium existing between the two electrodes has been described as air. However, in the present invention, the medium existing between the two electrodes is not limited to air, but may be any other medium. There may be.

When the medium existing between the two electrodes is other than air, a negative voltage for generating an electric field weaker than the dielectric breakdown electric field of the medium existing between the two electrodes is applied to the needle electrode 2.

That is, the present invention is applicable to a negative ion generator that preferentially generates negative ions without causing discharge in a medium existing between two electrodes. In the above description, the counter electrode 3 is described as being applied with the ground voltage (0 V). However, the present invention is not limited to the ground voltage (0 V), and the needle electrode 2 and the counter electrode 3 are not limited thereto. May be applied to the counter electrode 3 to generate an electric field weaker than the dielectric breakdown electric field of the medium existing in between.

Furthermore, in the above description, it has been described that the negative ion generators 10 to 1 OE generate negative ions, but a positive voltage in the range of 5 kV to 9 kV is applied to the needle electrode 2 and the ground voltage is When (0 V) is applied to the counter electrode 3, the negative ion generators 10 to 10E generate only positive ions by the same mechanism as described above. The amount of generated positive ions is equal to the amount of negative ions described above.

Therefore, the above-described negative ion generators 10 to 10E constitute an ion generator that generates only negative ions or only positive ions.

Furthermore, an ion generator that generates only negative ions or only positive ions is applied to a static eliminator. The ion generator applied to the static eliminator has a negative voltage of 5 kV to -9 kV and a ground voltage (0 V) each of a needle-shaped voltage. It is applied to the pole 2 and the counter electrode 3 for a certain period to generate negative ions, and a positive voltage of 5 kV to 9 kV and ground voltage (0 V) are applied to the needle electrode 2 and the counter electrode 3 for a certain period, respectively. To generate positive ions. As described above, the ion generator that generates the negative ions and the positive ions alternately at a constant cycle is suitable for the static eliminator. Industrial applicability

The present invention is applicable to an ion generator that generates an ion by generating an electric field weaker than the dielectric breakdown electric field of air between a needle electrode and a counter electrode.

Claims

The scope of the claims

1. Negative electrode (2),

A positive electrode and a negative electrode, and a negative voltage for generating an electric field between the negative electrode (2) and the positive electrode that is weaker than a dielectric breakdown electric field of a medium existing around the negative electrode (2). A voltage application circuit (6) for applying a voltage from the negative electrode to the negative electrode (2).

2. A negative electrode (2) to which a predetermined negative voltage is applied;

A counter electrode (3) disposed at a predetermined distance from the negative electrode (2) and covered with an insulator (4);

The predetermined negative voltage generates an electric field weaker than a dielectric breakdown electric field of a medium existing between the negative electrode (2) and the counter electrode (3). A voltage to generate between the ion generator.

3. The ion generator according to claim 2, wherein the counter electrode (3) comprises a covered electric wire (135, 136).

4. A negative electrode (20) whose body (2C) excluding the tip (2A) is covered with an insulator (9);

A counter electrode (3) for generating a predetermined electric field between the negative electrode (20) and the negative electrode (20);

The ion generator, wherein the predetermined electric field is an electric field weaker than a dielectric breakdown electric field of a medium existing between the negative electrode (20) and the counter electrode (3).

5. Negative electrode (2, 20) and

A counter electrode (3),

An insulator ( ⁴ , 9, 12) provided between the negative electrode (2, 20) and the counter electrode (3);

An electric field weaker than the dielectric breakdown electric field of a medium existing between the negative electrode (2, 20) and the counter electrode (3) is applied between the negative electrode (2, 20) and the counter electrode (3). A voltage application circuit (6) for applying a negative voltage to the negative electrode (2, 20) to generate the negative voltage.

6. The ion generator according to claim 5, wherein the insulator (4) covers the counter electrode (3).

7. The ion generator according to claim 6, wherein the insulator (4) is made of any one of glass, ceramics, resin, and semiconductor.

8. The ion generator according to claim 5, wherein the insulator (9) covers a portion (2C) of the negative electrode (20) except a tip (2A).

9. The ion generator according to claim 8, wherein the insulator (9) is made of any one of glass, ceramics, resin, and semiconductor.

10. The insulator (4, 9) comprises first and second insulators,

The first insulator (4) covers the counter electrode (4),

The ion generator according to claim 5, wherein the second insulator (9) covers a portion (2C) of the negative electrode (20) excluding a tip (2A).

1 1. The ion generator according to claim 10, wherein the first and second insulators (4, 9) are made of any one of glass, ceramics, resin, and semiconductor.

1 2. Negative electrode (2, 20) and

A counter electrode (3) for generating a predetermined electric field between the negative electrode (2, 20);

An insulator (4, 9, 12) provided between the negative electrode (2, 20) and the counter electrode (3);

The ion generator according to claim 1, wherein the predetermined electric field is weaker than a dielectric breakdown electric field of a medium existing between the negative electrode (2, 20) and the counter electrode (3). '

13. The ion generator according to claim 12, wherein the insulator (4) covers the counter electrode (3).

14. The ion generator according to claim 13, wherein the insulator (4) is made of any one of glass, ceramics, resin, and semiconductor.

1 5. The ion generator according to claim 12, wherein the insulator (9) covers a portion (2 C) of the negative electrode (20) excluding a tip portion (2 A).

16. The insulator (9) may be any of glass, ceramics, resin and semiconductor. 16. The ion generator according to claim 15, comprising:

17. The insulator (4, 9) comprises first and second insulators,

The first insulator (4) covers the counter electrode (3),

The ion generator according to claim 12, wherein the second insulator (9) covers a portion 5 (2C) of the negative electrode (20) excluding a tip portion (2A).

18. The ion generator according to claim 17, wherein the first and second insulators (4, 9) are made of any one of glass, ceramics, resin, and semiconductor.

19. a case (1) having an opening (1 1);

10 An insulator (13) formed in contact with the inner wall of the case (1) and the end face (11A) of the opening (11) and grounded;

An electron emitter that is disposed in the case (1) and emits electrons from the opening (11) to the outside of the case (1);

The electron emitter,

15 a negative electrode (2) for emitting the electrons,

A negative voltage for generating an electric field between the negative electrode (2) and the positive electrode, the electric field being weaker than a dielectric breakdown electric field of a medium existing around the negative electrode (2); A voltage application circuit (6) for applying a voltage from a negative electrode to the negative electrode (2).

20 20. Case (1) with opening (1 1),

A first insulator (13) formed in contact with the inner wall of the case (1) and the end face (11A) of the opening (11) and grounded;

25 The electron emitter is

'' A negative electrode (2) to which a predetermined negative voltage is applied and emits the electrons;

A counter electrode (3) disposed at a predetermined distance from the negative electrode (2) and covered with a second insulator (4);

The predetermined negative voltage exists between the negative electrode (2) and the counter electrode (3). An ion generator for generating an electric field weaker than the dielectric breakdown electric field of the medium between the negative electrode (2) and the counter electrode (3).

21. The ion generator according to claim 20, wherein the counter electrode (3) is a covered electric wire (135, 136).

22. Case (1) with opening (1 1);

The electron emitter,

A negative electrode (20) whose body (2C) excluding the tip (2A) is covered with a second insulator (9);

23. Case (1) with opening (11);

The electron emitter,

A negative electrode (2, 20) for emitting the electrons;

A counter electrode (3),

A second insulator (4, 9) provided between the negative electrode (2, 20) and the counter electrode (3);

An electric field weaker than the dielectric breakdown electric field of a medium existing between the negative electrode (2, 20) and the counter electrode (3) is applied between the negative electrode (2, 20) and the counter electrode (3). A voltage application circuit for applying a negative voltage to generate the voltage to the negative electrode (2, 20) (6) And an ion generator.

24. The ion generator according to claim 23, wherein the second insulator (4) covers the counter electrode (3).

25. The ion generator according to claim 24, wherein the first and second insulators (13, 4) are made of any one of glass, ceramics, resin, and semiconductor.

26. The ion generator according to claim 23, wherein the second insulator (9) covers a portion (2C) of the negative electrode (20) except a tip (2A).

27. The ion generator according to claim 26, wherein the first and second insulators (13, 9) are made of any one of glass, ceramics, resin, and semiconductor.

28. The second insulator (4, 9) is composed of first and second electrode insulators, and the first electrode insulator (4) covers the counter electrode (3);

24. The ion generator according to claim 23, wherein the second electrode insulator (9) covers a portion (2C) of the negative electrode (20) except for a tip (2A).

29. The first insulator (13), the first electrode insulator (4) and the second electrode insulator (9) are made of any one of glass, ceramics, resin and semiconductor. 29. The ion generator according to claim 28.

30. Case (1) with opening (1 1),

A first insulator (13) formed in contact with the inner wall of the case (1) and the end surface (11A) of the opening (11) and grounded;

The electron emitter,

A negative electrode (2, 20) for emitting the electrons;

A second insulator (4, 9) provided between the negative electrode (2, 20) and the counter electrode (3); The ion generator, wherein the predetermined electric field is an electric field weaker than a dielectric breakdown electric field of a medium existing between the negative electrode (2, 20) and the counter electrode (3).

31. The ion generator according to claim 30, wherein said second insulator (4) covers said counter electrode (3).

32. The ion generator according to claim 31, wherein the first and second insulators (13, 4) are made of any one of glass, ceramics, and resin semiconductor. .

33. The ion generator according to claim 30, wherein the second insulator (9) covers a portion (2C) of the negative electrode (20) except a tip (2A).

34. The ion generator according to claim 33, wherein the first and second insulators (13, 9) are made of one of glass, ceramics, resin, and semiconductor.

35. The second insulator (4, 9) is composed of first and second electrode insulators, and the first electrode insulator (4) covers the counter electrode (3);

31. The ion generator according to claim 30, wherein the second electrode insulator (9) covers a portion (2C) of the negative electrode (20) except for a tip (2A).

36. The first insulator (13), the first electrode insulator (4) and the second electrode insulator (9) are made of any one of glass, ceramics, resin and semiconductor. The ion generator according to claim 35.

37. The tip (2A) of the negative electrode (2, 20) is sharp.

37. The ion generator according to any one of claims 1 to 36.

38. a first electrode (2) to which a predetermined voltage is applied;

A second electrode (3) disposed at a predetermined distance from the first electrode (2) and covered with an insulator (4);

The predetermined voltage applies an electric field weaker than a dielectric breakdown electric field of a medium existing between the first electrode (2) and the second electrode (3) to the first electrode (2). An ion generator, which is a voltage to be generated between the second electrode (3).

39. The first electrode (2, 20)

A second electrode (3), An insulator (4, 9, 12) provided between the first electrode (2, 20) and the second electrode (3);

An electric field weaker than a dielectric breakdown electric field of a medium existing between the first electrode (2, 20) and the second electrode (3) is applied to the first electrode (2, 20) and the second electrode. Electrode

And (3) a voltage application circuit (6) for applying a voltage to the first electrode (2, 20) to generate the voltage between the first electrode (2, 20).

40. The first electrode (2, 20)

A second electrode for generating a predetermined electric field between the first electrode and the first electrode;

(3) and

An insulator (4, 9, 12) provided between the first electrode (2, 20) and the second electrode (3);

The ion generator, wherein the predetermined electric field is an electric field weaker than a dielectric breakdown electric field of a medium existing between the first electrode (2, 20) and the second electrode (3).