KR20060052648A - Ion generator - Google Patents

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

Ion Generator {ION GENERATOR}

The present invention relates to an ion generating device for generating negative ions or positive ions.

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

The main part of the conventional negative ion generating apparatus is shown in FIG. The conventional negative ion generator includes the discharge needle 60 and the counter electrode 70. The counter electrode 70 has a ring shape and is disposed in front of the tip 60A of the discharge needle 60. The discharge needle is not covered with an insulator and the tip 60A is pointed.

The discharge needle 60 is supplied with a negative voltage of about several kV through the wiring 61. In addition, the counter electrode 70 is supplied with 0 V or a positive voltage through the wiring 71. Then, a current flows slightly in the space 80 between the discharge needle 60 and the counter electrode 70, and local breakdown occurs. 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 60A or air near the tip 60A. However, since the counter electrode 70 to which 0V or a positive voltage is applied is present in the direction in which the electrons are emitted, most of the electrons emitted from the air near the tip 60A or the tip 60A of the discharge needle 60 are opposite electrodes. Dragged to (70) to die. And only the electron which escaped the counter electrode 70 adheres to an oxygen molecule or a nitrogen molecule, becomes negative ions, and is discharged as negative wind from the negative ion generating device.

When a corona discharge occurs in the space 80 between the discharge needle 60 and the counter electrode 70, oxygen molecules or nitrogen molecules are separated or ionized in the vicinity of the counter electrode 70 to which 0 V or a positive voltage is applied. Do it. As a result, positive ions are generated in the vicinity of the counter electrode 70. Since the counter electrode 70 is applied with 0 V or a positive voltage, the positive ions are not extinguished by the counter electrode 70, and the positive ions not absorbed by the discharge needle 60 recombine to form ozone or nitrogen oxides. .

As described above, in the manner in which the counter electrode is arranged in the emission direction of the electrons, most of the electrons emitted in the air are attracted to the counter electrode 70 and disappear.

Thus, as shown in Fig. 33, a scheme in which the counter electrode does not exist in front of the discharge needle has been devised. This method is called air discharge. An air discharge type negative ion generating device includes a glass 90, discharge needles 100A and 100B, and a counter electrode 110.

The discharge needles 100A, 100B and the counter electrode 110 are provided on one main surface 91 of the glass 90. The discharge needles 100A and 100B are not covered with an insulator like the discharge needle 60, and the tips are pointed. In the discharge needle 60, a negative voltage of several kV is applied through the wiring 101.

The counter electrode 110 has a plate shape extending in the rearward direction of the ground, and 0 V or a positive voltage is applied through the wiring 111.

Then, for example, local breakdown occurs between the discharge needle 100A and the counter electrode 110 and a discharge occurs in the space 120. In this case, since the discharge needle 100A emits electrons, oxygen molecules in the vicinity of the discharge needles 100A and 100B collide with electrons emitted from the discharge needle 100A to emit electrons and become positive ions. The generated positive ions are attracted to the discharge needles 100A and 100B and disappear. In addition, electrons emitted from oxygen molecules collide with the following oxygen molecules to release electrons.

On the other hand, in the vicinity of the counter electrode 110 to which 0 V or the positive voltage is applied, electrons generated by the discharge are attracted to the counter electrode 110 to be extinguished, and positive ions recombine to form ozone or nitrogen oxide.

As described above, the negative ion generating device using the air discharge method can generate more negative ions than the negative ion generating device in which the opposite electrode is located in front of the discharge needle. It is common with the negative ion generating apparatus which exists in front of a discharge needle.

Further, Japanese Patent Laid-Open No. 11-19201 discloses the ion generating device 200 shown in FIG. 34. The ion generating device 200 includes a needle electrode 201 and a plate electrode 202. The flat plate electrode 202 has an opening 204 in the center and is formed in a square rim.

On the other hand, the needle electrode 201 is provided in a positional relationship in which its axis line is substantially parallel to the plate surface of the plate electrode 202 and can cross the discharge edge 202d of the plate electrode 202. More specifically, the needle electrode 201 is fixed to an intermediate portion of the needle holder 203 attached to two parallel edges 202c and 202e of the flat electrode 202.

The needle electrode 201 maintains the height of the needle electrode 201 with the flat electrode 202 in the direction toward the edge 202d of the flat electrode 202. The needle holder 203 has a sleeve 205 on both sides thereof, and an adjustment screw 206 is inserted into the sleeve 205.

The two edges 202c and 202e of the flat plate electrode 202 are formed with screw holes 202a at substantially equal intervals, and the adjustment screw 206 in the sleeve 205 is inserted into the screw holes 202a. The needle holder 203 and the needle electrode 201 are fixed to a predetermined position by this.

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 from the entire needle electrode 201 occurs.

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 technique, a current flows between two electrodes, and discharge occurs in air existing between the two electrodes, so that positive ions are generated in the vicinity of an electrode to which 0 V or a positive voltage is applied, The positive ions do not disappear, and there is a problem that ozone or nitrogen oxides are generated in large quantities.

In addition, since a current flows between the two electrodes, there is a problem of electric shock if the electrode is accidentally touched.

Moreover, there exists a problem that resistance of air changes with temperature, discharge is not stabilized, and it is difficult to obtain negative ions stably.

It is therefore an object of the present invention to provide an ion generating device that generates ions without causing a discharge between two electrodes.

According to the present invention, the ion generating device includes a negative electrode and a voltage application circuit. The voltage application circuit has a positive electrode and a negative electrode, and applies a negative voltage from the negative electrode to the negative electrode for generating an electric field between the negative electrode and the positive electrode that is weaker than the dielectric breakdown field of the medium present around the negative electrode.

In addition, according to the present invention, the ion generating device includes a negative electrode and an opposite electrode. The negative electrode is applied with a predetermined negative voltage. The counter electrode is arranged at a predetermined distance from the negative electrode and covered by 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 field of the medium existing between the negative electrode and the counter electrode.

According to the present invention, the ion generating device includes a negative electrode and an opposite electrode. The negative electrode is coated with an insulator on the main body except for the tip. The counter electrode is provided to generate a predetermined electric field between the negative electrode and the negative electrode.

The predetermined electric field is a weaker electric field than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode.

According to the present invention, the ion generating device includes a negative electrode, an opposite electrode, an insulator, and a voltage application circuit. An insulator is provided between the negative electrode and the counter electrode. The voltage application circuit applies a negative voltage to the negative electrode to generate an electric field between the negative electrode and the opposite electrode that is weaker than the dielectric breakdown field of the medium existing between the negative electrode and the opposite electrode.

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

The predetermined electric field is a weaker electric field than the dielectric breakdown electric field of the medium existing between the negative electrode and the counter electrode.

According to the present invention, the ion generating device includes a case, an insulator, and an electron emitter. The case has an opening. The insulator is formed in contact with the end face of the inner wall of the case and 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 for emitting electrons, a positive electrode and a negative electrode, and has a negative voltage for generating an electric field between the negative electrode and the positive electrode that is weaker than the dielectric breakdown field of a medium present around the negative electrode. And a voltage application circuit applied from the to the negative electrode.

Furthermore, according to the present invention, the ion generating device includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulator is formed in contact with the end face of the inner wall of the case and 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 applied with a predetermined negative voltage, a negative electrode for emitting electrons, a counter electrode disposed by setting a predetermined distance from the negative electrode, and covered by a second insulator, The voltage is a voltage for generating an electric field between the negative electrode and the counter electrode that is weaker than the dielectric breakdown field of the medium existing between the negative electrode and the counter electrode.

Furthermore, according to the present invention, the ion generating device includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulating portion is formed in contact with the end face of the inner wall of the case and the opening portion, 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 whose main body is covered by a second insulator except for the tip portion, and an opposite electrode for generating a predetermined electric field between the negative electrode, and the predetermined electric field is the negative electrode and the opposite electrode. It is an electric field weaker than the dielectric breakdown field of the medium existing between and.

Furthermore, according to the present invention, the ion generating device includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulator is formed in contact with the end face of the inner wall of the case and 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 secondary insulating material provided between the negative electrode, the opposite electrode, the negative electrode and the opposite electrode, and the medium between the negative electrode and the opposite electrode. A negative voltage is applied to the negative electrode to generate a weak electric field between the negative electrode and the counter electrode.

Furthermore, according to the present invention, the ion generating device includes a case, a first insulator, and an electron emitter. The case has an opening. The first insulator is formed in contact with the end face of the inner wall of the case and 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 for emitting electrons, a counter electrode for generating a predetermined electric field between the negative electrode, and a second insulator provided between the negative electrode and the counter electrode. The electric field is weaker than the dielectric breakdown field of the medium existing between the negative electrode and the counter electrode.

According to the present invention, the ion generating device includes a first electrode and a second electrode. A predetermined voltage is applied to the first electrode. The second electrode is disposed by setting a predetermined distance from the first electrode and is covered with an insulator. The predetermined voltage is 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.

According to the present invention, the ion generating device includes a first electrode, a second electrode, an insulator, and a voltage application circuit. An insulator is provided between the first electrode and the second electrode. The voltage application circuit generates a voltage for generating an electric field between the first electrode and the second electrode that is weaker than the dielectric breakdown field of the medium existing between the first electrode and the second electrode. To apply.

Moreover, according to this invention, an ion generating apparatus is equipped with a 1st electrode, a 2nd electrode, and an insulator. The second electrode is an electrode for generating a predetermined electric field between the first electrode and the first electrode. An insulator is provided between the first electrode and the second electrode. The predetermined electric field is an electric field weaker than the dielectric breakdown electric field of the medium existing between the first electrode and the second electrode.

Preferably the counter electrode consists of a sheathed wire.

Preferably the insulation covers the opposite electrode.

Preferably the insulator consists of any one of glass, ceramics, resin and semiconductor.

Preferably, the insulator covers a portion except the tip of the negative electrode.

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

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

Preferably, the second insulator covers the opposite electrode.

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

Preferably, the second insulator is composed of the first and second electrode insulators, the first electrode insulator covers the opposite electrode, and the second electrode insulator covers the portion except the tip of the secondary electrode. do.

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 pointed.

In the negative ion generating device according to the present invention, an electric field weaker than an electric field in which a discharge occurs between the negative electrode (or the first electrode) and the counter electrode (or the second electrode) is generated, and electrons are emitted from the negative electrode. do. The electrons emitted from the negative electrode collide with the molecules existing between the negative electrode and the counter electrode and generate positive ions and electrons. The generated positive ions are attracted to the negative electrode and disappear at the negative electrode. In addition, the generated electrons attach to other molecules to generate negative ions. In the present invention, electrons may be emitted from air molecules in the vicinity of 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, the generation of ozone can also be suppressed.

1 is a perspective view of a negative ion generator according to the first embodiment.

FIG. 2 is a cross-sectional structural view seen from the A direction of the negative ion generator shown in FIG. 1; FIG.

FIG. 3 is a plan view of the negative ion generating device shown in FIG. 1 as viewed in the B direction. FIG.

4 is a diagram for explaining a mechanism for generating negative ions.

FIG. 5 is an electrical circuit diagram of the negative ion generator shown in FIG. 1. FIG.

6 is a plan view of the room.

FIG. 7 is a diagram showing a distribution in the room shown in FIG. 6 of the amount of negative ions generated by the negative ion generating device according to Example 1. 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 generating device by the air discharge system.

9 is a perspective view of a negative ion generator according to a second embodiment;

FIG. 10 is a cross-sectional structural view seen from the A direction of the negative ion generator shown in FIG. 9; FIG.

FIG. 11 is a plan view showing an arrangement position of counter electrodes in the negative ion generator shown in FIG. 9; FIG.

12 to 15 show a modification of the counter electrode.

16 is a perspective view of a negative ion generator according to a third embodiment;

17 is a perspective view of a negative ion generator according to a fourth embodiment;

FIG. 18 is a cross-sectional structural view seen from the A direction of the negative ion generator shown in FIG. 17; FIG.

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

20 is a perspective view of a negative ion generator according to a fifth embodiment;

21 is a sectional view of a negative ion generator according to a sixth embodiment;

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.

24 to 31 show a modification of the electron emitter.

Fig. 32 is a diagram showing an essential part of a negative ion generating device by a conventional discharge method.

Fig. 33 is a diagram showing another main part of the negative ion generating device according to the conventional discharge method.

Fig. 34 is a diagram showing still another main part of the negative ion generating device according to the conventional discharge method.

Embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent part in drawing, and the description is not repeated.

Example 1

Referring to FIG. 1, the negative ion generating device 10 according to the first embodiment includes a case 1, a needle electrode 2, a counter electrode 3, an insulator 4, and a support member 5. And a power supply circuit 6 and wirings 7, 8.

The insulator 4, the support member 5, and the power supply circuit 6 are fixed to the bottom surface 1A of the case 1. The case 1 has an 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 such 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 an electrical conductor having a high density and a high heat resistance temperature.

The counter electrode 3 is covered with the insulator 4, and is set by setting a predetermined distance with respect to 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. The insulator 4 thus electrically insulates the opposing electrode 3. The semiconductor constituting the insulator 4 has a specific resistance of 10 ⁶ Ωcm or more. In other words, the semiconductor constituting the insulator 4 is not doped with either p-type or n-type.

The support member 5 consists of an insulator. The support member 5 thus floats the needle electrode 2 electrically from the case 1. The power supply circuit 6 generates a negative voltage and a ground voltage (0V) in the range of -5kV to -9kV. The power supply circuit 6 then supplies the generated negative voltage to the needle electrode 2 via the wiring 7, and gives the generated ground voltage 0V to the counter electrode 3 via the wiring 8.

One end of the wiring 7 is connected to the needle electrode 2, and the other end thereof is connected to the power supply circuit 6. One end of the wiring 8 is connected to the counter electrode 3, and the other end is connected to the power supply circuit 6. Thus, the needle electrode 2 receives a negative voltage in the range of -5 kV to -9 kV from the power supply circuit 6 via the wiring 7, and the counter electrode 3 is removed from the power supply circuit 6 through the wiring 8. It receives the ground voltage (0V).

With reference to FIG. 2, the cross-sectional structure which looked at the negative ion generating device 10 shown in FIG. 1 from the A direction is demonstrated. The insulator 4, the support member 5, and the power supply circuit 6 are in contact with the bottom face 1A of the case 1. The counter electrode 3 and the insulator 4 are arranged on the opposite side of the needle electrode 2. The power supply circuit 6 is disposed on the opposite side of the needle electrode 2 and the support member 5.

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

With reference to FIG. 3, the planar structure seen from the B direction of the negative ion generator 10 shown in FIG. 1 is demonstrated. The needle electrode 2 is fixed by the supporting member 5 such that its tip portion 2A is positioned at a distance L1 from the opening 11 of the case 1. The counter electrode 3 and the insulator 4 are arranged at a position L4 from the needle electrode 2. The distance L4 depends on the material of the insulator 4. The distance L4 is in the range of 0 mm to 15 mm when the insulator 4 is made of glass, and the distance L4 is 30 mm when the insulator 4 is made of Teflon. Moreover, the distance L3 of the opening part 11 in the direction parallel to the bottom face 1A of the case 1 is the range of 0.5 cm-1 cm, Preferably it is the range of 0.5 cm-0.7 cm. Moreover, the counter electrode 3 and the insulator 4 may be arrange | positioned rather than the front end part 2A of the needle electrode 2 at the opening part 11 side, or may be arrange | positioned between the support member 5 and the case 1. good.

When a negative voltage in the range of -5 kV to -9 kV is applied to the needle electrode 2, and the ground voltage (0 V) is applied to the counter electrode 3, the negative ion generating device 10 receives negative ions from the opening 11. Release from. With reference to FIG. 4, the mechanism by which the negative ion generating device 10 discharges negative ions is demonstrated.

When a negative voltage is applied to the needle electrode 2 and a ground voltage (0 V) is applied to the counter electrode 3, the needle electrode 2 transfers electrons from its tip portion 2A to the opening 11 of the case 1. (Or the needle electrode 2 emits electrons from air molecules in the vicinity of the tip portion 2A. The same applies to the following). The released electrons collide with oxygen molecules 31 and nitrogen molecules 32 in the air. The oxygen molecule 31 then emits electrons 31B and changes to positive ions 31A. In addition, the nitrogen molecules 32 emit electrons 32B and change into positive ions 32A. The electrons 31B and 32B attach to other oxygen molecules or nitrogen molecules, and negative ions 33 and 34 are generated.

Positive ions 31A and 32A generated by the collision of electrons are attracted to the needle electrode 2 by an electric field generated between the needle electrode 2 and the counter electrode 3, and disappear from the needle electrode 2. do.

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

When a negative voltage in the range of -5 kV to -9 kV is applied to the needle electrode 2, the electrons spontaneously spring out of the needle electrode 2, and the oxygen molecules 31 in the region 40 in the vicinity of the needle electrode 2. ) Or nitrogen molecules 32. In the region 40, the oxygen molecules 31 and the nitrogen molecules 32 emit electrons 31B and 32B, respectively, and change into positive ions 31A and 32A. The emitted electrons 31B and 32B diffuse in the air, attach to other oxygen molecules or nitrogen molecules, and negative ions 33 and 34 are generated.

As described above, the negative ion generating device 10 emits electrons from the needle electrode 2, and ionizes molecules in the air in the vicinity of 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 positive ions are sucked by the negative voltage applied to the needle electrode 2. As a result, the negative ion generating device 10 can diffuse only electrons into the air and generate negative ions around it.

FIG. 5 shows a circuit diagram of the needle electrode 2, the counter electrode, the wirings 7 and 8, and the power supply circuit 6 in the negative ion generating device 10. The power source 6A is a power source for applying a negative voltage in the range of -5 kV to -9 kV to the needle electrode 2.

An ammeter was inserted between the power supply 6A and the needle electrode 2, and the current flowing from the power supply 6A to the needle electrode 2 was measured. As a result, it was 8 mA. The current flowing from the counter electrode 3 to the ground node GND was measured by inserting an ammeter between the counter electrode 3 to which the ground voltage 0V was applied and the ground node GND.

Therefore, no current flows between the needle electrode 2 and the counter electrode 3. In other words, 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 L4 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 Since it is in the range of -5 kV to -9 kV, the electric field between the needle electrode 2 and the counter electrode 3 is in the range of -5 kV / cm to -9 kV / cm.

Since an electric field of 10 kV / cm or more is required to generate a discharge in air at 1 atm, the negative voltage applied to the needle electrode 2 is an electric field that generates a discharge between the needle electrode 2 and the counter electrode 3 ( That is, it is a voltage for generating an electric field weaker than the dielectric breakdown field of air).

Therefore, the present invention is characterized by generating an electric field weaker than the electric field in which discharge occurs between the needle electrode 2 and the counter electrode 3 (that is, the dielectric breakdown field of air).

Referring again to FIG. 1, the power supply circuit 6 applies a negative voltage in the range of -5 kV to -9 kV to the needle electrode 2 via the wiring 7, and the ground voltage (0 V) through the wiring 8. ) Is applied to the counter electrode 3, an electric field weaker than the dielectric breakdown field of air is produced between the needle electrode 2 and the counter electrode 3, and the needle electrode 2 has a tip portion 2A or a tip portion. Electrons are emitted from air molecules in the vicinity of (2A). The emitted electrons collide with oxygen molecules 31 or nitrogen molecules 32 in the air, and generate positive ions 31A and 32A and electrons 31B and 32B. Then, the needle electrode 2 sucks positive ions generated in the vicinity of the tip portion 2A, and the electrons 31B and 32B emitted from the oxygen molecule 31 or the nitrogen molecule 32 are replaced with other oxygen molecules or nitrogen molecules. To form negative ions (33, 34). The negative ion generating device 10 emits negative ions 33 and 34 from the opening 11.

Table 1 is the result of having measured the amount of the negative ion which generate | occur | produced about the unit 1-10 of the negative ion generation apparatus which concerns on this invention. For comparison, the measurement result of the negative ion generating device by the air discharge method is shown.

Table 1

The measuring instrument which measured the negative ion is as follows. The type is Andean Electric ITC-201A, the measuring method is a flat type measuring device (called measuring device (A)), and the type is Sigmatech SC-10, and the measuring method is a double cylindrical measuring device (measuring device (B)). The amount of negative ions was measured.

The measurement procedure is first measured with respect to the negative ion generating device by the air discharge method, and then the amount of negative ions is sequentially measured for the first to fifth units of the negative ion generating device according to the present invention. Then, again, the amount of negative ions is measured with respect to the negative ion generating device by the air discharge method, and then the amount of negative ions is sequentially measured with respect to units 6 to 10 of the negative ion generating device according to the present invention. Finally, the amount of negative ions is measured with respect to the negative ion generating device by the air discharge method.

The above-mentioned measurement was performed on conditions of air temperature: 25 degreeC, humidity: 50%, temperature: 26 degreeC, and humidity: 58%.

As a result, it is understood that the negative ion generating device according to the present invention generates two times or more negative ions even when measured by using any of the measuring devices A and B, compared to the negative ion generating device by the air discharge method. Could. In addition, there is almost no change in the amount of negative ions due to the change in humidity from 50% to 58%.

The negative ion generating device using the air discharge method generates the most negative ions in the device generating negative ions by using the discharge method, but the negative ion generating device according to the present invention is more negative than the negative ion generating device using the air discharge method. It was found that more negative ions were generated.

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

TABLE 2

The measuring device used the measuring device B mentioned above. Measurement conditions are air temperature: 25 ° C and humidity: 51%. It was evident that the negative ion generating device according to the present invention generated more negative ions at all measured distances than the negative ion generating device by the air discharge method.

The amount of generated negative ions in the negative ion generating device according to the air discharge method is 59% at a position of 3 mm with respect to the amount of generated negative ions in the negative ion generating device according to the present invention. At a distance of 1m, it is 43%. This means that the negative ion generating device according to the present invention can generate negative ions in a wider range.

Table 3 shows the result of having measured the amount of negative ions in the position of 3 mm and the position of 10 cm from the negative ion generator about the unit 1-10 of the negative ion generator which concerns on this invention.

TABLE 3

At a distance of 3 mm, the average value of negative ions generated by Units 1 to 10 was 7.76 million / cm 3, and at a distance of 10 cm, the average value of negative ions generated by Units 1 to 10 was 4.3 million. / Cm 3. And in two distances, the deviation of the amount of negative ions by the apparatus between Units 1-10 is small. Therefore, the negative ion generating device according to the present invention is sufficiently provided with reproducibility as an apparatus.

Table 4 shows the comparison of the ozone generation amount in the negative ion generator according to the present invention and the negative ion generator according to the air discharge method. The measuring place is the front of the device. In addition, measurement conditions are air temperature: 25 degreeC, and humidity: 50%. In addition, the measuring apparatus is ozone monitor EG-5000 of Ebara Corporation.

Table 4

In both the center and the left side, the amount of ozone generated in the negative ion generating device according to the present invention is below the detection limit and is two or more digits smaller than in the case of the negative ion generating device by the air discharge method.

Table 5 compares the amount of ozone for a plurality of devices of the negative ion generator according to the present invention and the negative ion generator according to the air discharge method. Measurement conditions are air temperature: 22 ° C and humidity: 60%.

Table 5

In the case of the negative ion generating device according to the present invention, the ozone generation amount is lower than the detection limit for all devices, and the amount of ozone generation is smaller than in the case of the negative ion generation device according to the air discharge system.

6 shows a plan view of a room 30 having a constant area. The length L7 is 3.46 m and the length L8 is 4.36 m. At each of the points P1 to P6 of the room 30, the amount of negative ions generated by the negative ion generating device 10 was measured. Points P1, P2, P3, and P5 are located at four corners of the room 30, point P4 is located at the midpoint between point P3 and point P5, and point P6 generates negative ions. It is located at a position 2 m from the device 10.

Table 6 shows the measurement result 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 the points P1 to P6 of the amount of negative ions generated by the negative ion generating device by the air discharge method for comparison. Measurement conditions are air temperature: 30 degreeC, and humidity 56%.

The amount of negative ions generated by the negative ion generating device 10 according to the present invention decreases in the order of points P1, P2, P6, P4, P3, and P5, even if measured by any of the measuring devices A and B. And decreases most at point P5.

On the other hand, the amount of negative ions generated by the negative ion generating device by the air discharge method decreases in the order of points P1, P2, P6, P3, P4, and P5, and most decreases at point P5.

And it was understood that the negative ion generating device 10 according to the present invention can generate more negative ions at all of the points P1 to P6 than the negative ion generating device by the air discharge method. That is, the negative ion generating device 10 according to the present invention can generate more negative ions in the area of 15.O8 m 2 (= 4.36m × 3.46m) than the negative ion generating device by the air discharge method.

7 shows the distribution at the points P1 to P6 of the amount of negative ions generated by the negative ion generating device 10 according to the present invention. 8 shows the distribution at the points P1 to P6 of the amount of negative ions generated by the negative ion generating device by the air discharge method. In addition, the amount of negative ions shown in FIG. 7 and FIG. 8 was measured by the measuring device (B).

In FIG. 7 and FIG. 8, the vertical axis represents the amount of negative ions. It is clear from FIG. 7 and FIG. 8 that the negative ion generator 10 which concerns on this invention can generate more negative ions in the room 30 than the negative ion generator by the air discharge system.

Table 7 shows the measurement result of the amount of negative ions generated in the waterfall.

TABLE 7

The amount of negative ions shown in Table 7 is measured by the measuring device A, and the measurement conditions are air temperature of 30 ° C. and humidity of 60%. The measurement place is a position of about 15 m in the horizontal direction from the melting furnace and a position of about 30 m in the horizontal direction from the melting furnace. 20000 to 30000 / cm3 of negative ions were detected at the position of about 15 m from the melt, and 5000 to 8000 / cm3 of negative ions were detected at the position of about 30 m from the melt.

In general, it is understood that the amount of negative ions present in the vicinity of the furnace is good for health, and the amount of healthy negative ions is in the range of several thousand to tens of thousands / cm 3.

As shown in Table 6, the negative ion generating device 10 according to the present invention generates a negative ion amount of 22000 or more / cm 3 or more in the entire region of the room 30 having an area of about 15 m 2. In addition, this figure is the measured value by the measuring device A in order to compare with the measurement result of Table 7.

Therefore, it was understood that the negative ion generating device 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 than the conventional negative ion generator, and can suppress the generation of ozone.

In addition, the negative ion generating device 10 according to the present invention can generate more negative ions than the amount of negative ions generated in nature.

In addition, the power supply circuit 6 constitutes a "voltage application circuit". Moreover, the needle electrode 2, the counter electrode 3, the insulator 4, the power supply circuit 6, and the wirings 7 and 8 comprise an "electron emitter."

Example 2

Referring to FIG. 9, the negative ion generator 10A according to the second embodiment adds an insulator 9 to the negative ion generator 10 and removes the insulator 4. Otherwise, the negative ion generator 10A is a negative ion generator 10A. Same as (10).

The insulator 9 covers the main body 2C except for the tip 2A and the rear 2B of the needle electrode 2. The insulator 9 is made of any one of glass, ceramics, resin, and semiconductor. Covering the body portion 2C of the needle-shaped electrode 2 with the insulator 9 constitutes the negative electrode 20. The sub-electrode 20 is fixed to the support member 5 by allowing the body portion 2C and the insulator 9 to penetrate the support member 5. The rear end portion 2B of the needle electrode 2 is connected to the wiring 7.

In the negative ion generator 10A, the counter electrode 3 is not covered, and the body portion 2C of the needle electrode 2 is covered with the insulator 9. That is, a part of the needle electrode 2 is covered with the insulator 9 so that no current flows between the needle electrode 2 and the counter electrode 3.

With reference to FIG. 10, the cross-sectional structure seen from the A direction of the negative ion generator 10A shown in FIG. 9 is demonstrated. On the bottom surface 1A of the case 1, the counter electrode 3, the support member 5, and the power supply circuit 6 are provided. The sub-electrode 20 is fixed by the supporting member 5 by the main body portion 2C and the insulator 9 passing through the supporting member 5. Others are the same as that of FIG.

In addition, the planar structure seen from the B direction of the negative ion generating device 10A shown in FIG. 9 is the same as the planar structure shown in FIG.

With reference to FIG. 11, the arrangement position of the counter electrode 3 is demonstrated. When the direction from the front end portion 2A of the negative electrode 20 to the rear end portion 2B is referred to as the x direction, the counter electrode 3 generally faces the center portion cp in the x direction of the insulator 9. Is placed. However, the counter electrode 3 is not limited to this, and may be disposed on the x-direction side than the surface 15 where the tip portion 2A of the needle electrode 2 is in contact. Therefore, the counter electrode 3 may be arrange | positioned in any position of the point C-F. When the counter electrode 3 is disposed on the side opposite to the x direction from the plane 15, the needle electrode 2 and the counter electrode 3 which are not covered by the insulator face each other, and the needle electrode 2 and the counter electrode ( Since discharge easily occurs between and 3), the arrangement position of the counter electrode 3 is limited as described above to prevent this.

Others are the same as that of the negative ion generator 10.

Referring again to FIG. 9, the power supply circuit 6 applies a negative voltage of −5 kV to −9 kV to the needle electrode 2 of the negative electrode 20 through the wiring 7 and through the wiring 8. When the ground voltage (0 V) is applied to the counter electrode 3, an electric field weaker than the dielectric breakdown field of air is generated between the needle electrode 2 and the counter electrode 3, and the sub-electrode 20 has a front end ( Emit electrons from 2A). Alternatively, the negative electrode 20 emits electrons from air molecules in the vicinity of the tip portion 2A. The emitted electrons collide with oxygen molecules 31 or nitrogen molecules 32 in the air, and generate positive ions 31A and 32A and electrons 31B and 32B. Then, the negative electrode 20 attracts positive ions 31A and 32A generated in the vicinity of the tip portion 2A, and electrons 31B and 32B emitted from the oxygen molecule 31 or the nitrogen molecule 32 are different from each other. It attaches to oxygen or nitrogen molecules to produce negative ions 33 and 34. The negative ion generating device 10A 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 without covering the counter electrode 3 with the insulator and with the insulator 9 covering the main body portion 2C of the needle electrode 2 to which the negative voltage is applied. It can generate an electric field weaker than the dielectric breakdown field of air and generate a lot of negative ions.

With reference to FIGS. 12-15, the modification of the counter electrode 3 is demonstrated. Referring to FIG. 12, the counter electrode 3 may be the counter electrode 3A bent in a bow shape along the circumferential direction of the insulator 9 of the sub-electrode 20.

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

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

Referring to FIG. 15, the counter electrode 3 may be the counter electrode 3D bent in a spiral shape in the axial direction of the sub-electrode 20.

Even when the counter electrodes 3A to 3D shown in FIGS. 12 to 15 are used for the negative ion generating device 10A, weaker than the dielectric breakdown field of air between the needle electrode 2 and the counter electrode 3. An electric field is generated, and the generation of ozone can be suppressed to generate many negative ions.

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

In addition, the negative electrode 20, the counter electrode 3, the power supply circuit 6, and the wirings 7 and 8 constitute an "electron emitter".

Others are the same as that of Example 1.

Example 3

Referring to FIG. 16, the negative ion generating device 10B according to the third embodiment adds an insulator 9 to the negative ion generating device 10, and otherwise, the negative ion generating device 10B is the same as the negative ion generating device 10.

The needle electrode 2 and the insulator 9 constitute the negative electrode 20. Therefore, the specific material of the insulator 9, the fixing method of the negative electrode 20 to the supporting member 5, and the connecting method of the negative electrode 20 and the wiring 7 are as described in the second embodiment.

In the negative ion generating device 10B, the needle electrode 2 and the counter electrode 3 are covered with the insulators 4 and 9, respectively. Therefore, the counter electrode 3 and the insulator 4 may be disposed at any position in the case 1 as described in the first embodiment.

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

In addition, 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 Example 1, 2.

Example 4

Referring to FIG. 17, the negative ion generating device 10C according to the fourth embodiment replaces the insulator 4 of the negative ion generating device 10 with the insulator 12, and otherwise, the negative ion generating device 10B. )

The insulator 12 is disposed between the needle electrode 2 and the counter electrode 3. That is, the insulator 12 does not cover the needle electrode 2 or the counter electrode 3, but instead of the needle electrode 2 and the counter electrode 3 so as to spatially block the needle electrode 2 and the counter electrode 3. 3) is arranged between. The insulator 12 is made of any one 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 velocity of about 0.1 mm or more. It has a depth (D). And the depth D is determined according to the insulation ability of an insulator. The insulator 12 may be made of a semiconductor having a specific resistance of 106? Cm or more (that is, a semiconductor not doped with a p-type or n-type). In this case, the depth D of the insulator 12 is an order of several hundred microns.

The negative ion generating device 10C does not cover both the needle electrode 2 and the counter electrode 3 with an insulator, but insulates the insulator 12 between the needle electrode 2 and the counter electrode 3. By arrange | positioning, an electric field weaker than the dielectric breakdown field of air between the needle electrode 2 and the counter electrode 3 is produced.

With reference to FIG. 18, the cross-sectional structure seen from the A direction of the negative ion generator 10C shown in FIG. 17 is demonstrated. The support member 5, the power supply circuit 6, and the insulator 12 are disposed on the bottom face 1A of the case 1. The insulator 12 is disposed on the opposite side of the needle electrode 2, and the counter electrode 3 is also disposed on the opposite side of the insulator 12 (in FIG. 18, the counter electrode 3 is the insulator 12). Concealed by). Others are the same as that of FIG.

With reference to FIG. 19, the planar structure seen from the B direction of the negative ion generator 10C shown in FIG. 17 is demonstrated. The insulator 12 is disposed at a position at a distance L5 from the needle electrode 2 in parallel with the needle electrode 2. In addition, the counter electrode 3 is disposed at a position with a distance L6 from the insulator 12. The distance L5 is in the range of 0 to 30 mm, and the distance L6 is in the range of 0 to 30 mm.

The rest is the same as that of FIG.

When a negative voltage is applied to the needle electrode 2 and the ground voltage 0V is applied to the counter voltage 3, an electric field is generated from the counter electrode 3 toward the needle electrode 2. The electric force line in the electric field starts from the counter electrode 3 and enters the needle electrode 2. In this case, since the electric line of force has a property of concentrating on a pointed part, the electric line of force tends to concentrate on the tip portion 2A of the needle electrode 2. Therefore, the insulator 12 is preferably arranged at a position to block the straight line connecting the opposite electrode 3 and the tip 2A of the needle electrode 2.

In the negative ion generating device 10C, in which the needle electrode 2 and the counter electrode 3 are spaced apart by the insulator 12, a negative voltage of -5 kV to -9 kV is applied to the needle electrode 2 through the wiring 7. When the ground voltage (0V) is applied to the counter electrode (3) through the wiring (8), an electric field weaker than the dielectric breakdown field of the air between the needle electrode (2) and the counter electrode (3) Generated and many negative ions are generated.

In addition, the needle electrode 2, the counter electrode 3, the insulator 12, the power supply circuit 6, and the wirings 7 and 8 constitute an "electron emitter".

Others are the same as that of Example 1.

Example 5

Referring to FIG. 20, the negative ion generating device 10D according to the fifth embodiment removes the counter electrode 3, the insulator 4, and the wiring 8 of the negative ion generating device 10. , The same as the negative ion generating device 10.

The power supply circuit 6 applies a negative voltage of -5 kV to -9 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 field of air is generated between the needle electrode 2 and the terminal 66 of the power supply circuit 6. Then, the needle electrode 2 emits electrons from the tip portion 2A, and the emitted electrons collide with oxygen molecules or nitrogen molecules in the air and generate positive ions and electrons. The needle electrode 2 also sucks the generated positive ions and dissipates the positive ions generated in the air. The electrons emitted from the oxygen molecule or the nitrogen molecule attach to other oxygen molecules or the nitrogen molecule, and negative ions are generated.

In the negative ion generator 10D, since discharge does not occur between the needle electrode 2 and the terminal 66 of the power supply circuit 6, the positive ions are only the tip 2A of the needle electrode 2. Generated in the vicinity of Therefore, like the negative ion generating device 10D, in particular, the generation of ozone can be suppressed and many negative ions can be generated without providing the counter electrode 3.

In addition, the needle electrode 2, the power supply circuit 6, and the wiring 7 constitute an "electron emitter". In the negative ion generating device according to the fifth embodiment, the counter electrode 3 and the wiring 8 are removed from the negative ion generating device 10A according to the second embodiment, or the negative ion generating device according to the third embodiment. The counter electrode 3, the insulator 4, and the wiring 8 are removed from 10B, or the counter electrode 3, the insulator 12, and the wiring from the negative ion generator 10C according to the fourth embodiment. You may have deleted (8).

Others are the same as Example 1, 2, 3, 4.

Example 6

The negative ion generator according to the sixth embodiment is a negative ion generator in which the inner wall of the case 1 of the negative ion generator 10 is covered with an insulator. With reference to FIG. 21, the cross-sectional structure of the negative ion generating apparatus 10E which concerns on Example 6 is demonstrated. The inner wall of the case 1 is covered with the insulator 13. Although the case 1 has the opening part 11, the end surface 11A, 11A of the opening part 11 is also coat | covered with the insulator 13. As shown in FIG. That is, the insulator 13 covers the inner walls of the case 1 and the end faces 11A and 11A of the opening 11 so that electrons emitted from the needle electrode 2 do not charge the case 1. And the insulator 13 is earthed. In addition, the insulator 13 is made of Teflon or Gaishi. The insulator 13 may be made of any one of ceramics, resins, and semiconductors.

The inner wall of the case 1 and the end faces 11A and 11A of the opening 11 are covered by the insulator 13 for the following reason. If the insulator 13 is not provided, a part of the electrons emitted from the needle electrode 2 is charged to the inner walls of the case 1 or the end faces 11A and 11A of the opening 11. Then, even if the case 1 is comprised by the insulator, it will be able to carry electricity, and discharge will generate | occur | produce between the case 1 and the needle electrode 2. Therefore, the inner walls of the case 1 and the end faces 11A and 11A of the opening 11 are insulated from each other in order to prevent discharge between the case 1 and the needle electrode 2 due to the charging of the case 1. Covered by (13).

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

The opening 11 of the negative ion generating device 10E shown in FIG. 21 is tapered at end faces 11A and 11A. As a result, the generated electrons and negative ions are likely to be released from the opening 11 to the outside.

Others are the same as that of FIG.

As shown in FIG. 22, the negative ion generating device 10E does not need to have a taper as long as the end faces 11A and 11A of the opening 11 are covered with the insulator 13.

In the negative ion generator 10E, the power supply circuit 6 applies a negative voltage in the range of -5 kV to -9 kV to the needle electrode 2 through the wiring 7, and supplies the ground voltage (0 V) to the wiring ( When applied to the counter electrode 3 through 8), an electric field weaker than the dielectric breakdown field of air is generated between the needle electrode 2 and the counter electrode 3, and the needle electrode 2 conducts electrons to the opening ( Eject in the direction of 11). In the vicinity of the tip portion 2A of the needle electrode 2, collision between electrons emitted from the needle electrode 2 and oxygen molecules or nitrogen molecules in the air occurs, and positive ions and electrons are generated. Positive ions are attracted to the needle electrode 2 and disappear, and electrons are attached to other oxygen molecules or nitrogen molecules in the air to generate negative ions.

The negative ion generating device 10E emits electrons and negative ions from the opening 11 to the outside. In this case, since the inner wall and the end surfaces 11A and 11A of the opening 11 are covered by the insulator 13, the case 1 is not charged by the electrons emitted from the needle electrode 2, Discharge does not occur between the case 1 and the needle electrode 2.

Therefore, the negative ion generating device 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".

The insulator 13 may be applied to any of the negative ion generating devices 10A, 10B, 10C, and 10D. Also in this case, like the negative ion generating device 10E, discharge does not occur between the case 1 and the needle electrode 2.

Other than that is the same as that of Example 1-5.

The needle electrode 2 may be the needle electrode 21 shown in FIG. 23. The needle electrode 21 includes a plate-shaped main body 210, tip portions 211 and 212, and an insulator 213. The tips 211, 212 are attached to the body 210 or are formed as part of the body 210. The insulator 213 is made of resin and covers the main body 210 except for the tips 211 and 212.

Also in the case where the needle electrode 21 is used, an electric field weaker than the dielectric breakdown field of air is generated between the needle electrode 21 and the counter electrode 3 to suppress the generation of ozone and generate many negative ions. have.

In addition, since the needle electrode 21 has a plurality of tip portions 211 and 212, more electrons can be emitted, and as a result, more negative ions can be generated.

With reference to FIGS. 24-31, the modification of the electron emitter containing the needle electrode 2 and the counter electrode 3 is demonstrated.

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

The power supply circuit 6 applies a negative voltage in the range of -5 kV to -9 kV to the needle electrodes 2 and 2 via the wiring 7, and supplies the ground voltage 0V through the wiring 8 to the wiring 131. ), The needle electrode 2, 2 and the wiring 131 as the counter electrode 3 are insulated by the printed board 130 as an insulator, so that the needle electrode 2, 2 and the wiring No discharge occurs between 131 and. As a result, the mechanism described above can suppress the generation of ozone and generate many negative ions.

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

The electron emitter 141, like the electron emitter 140, can suppress the generation of ozone and generate many negative ions. In the case of the electron emitter 141, the printed board 130 having the wiring 131 includes an insulator provided between the supporting member 5 of the needle electrodes 2 and 2 and the needle electrode 2 and the counter electrode 3. Since it functions as (12), an electron emitter can be formed more simply.

Referring to FIG. 26, the electron emitter 142 includes two needle electrodes 2 and 2, printed boards 130A and 130B, wirings 131, and wirings 7 and 8. Part of the two needle electrodes 2 and 2 is bent at a right angle. Then, the two needle electrodes 2 and 2 are fixed to one surface of the printed board 130A by inserting the portion bent at right angles into the printed board 130A. The wiring 7 is connected to the two needle electrodes 2 and 2.

The wiring 131 is formed on one surface of the printed board 130A and the printed board 130B, and is sandwiched by the printed board 130A and the printed board 130B. The wiring 131 is connected to the wiring 8.

In the electron emitter 142, since the wiring 131 as the counter electrode 3 is insulated from the needle electrodes 2 and 2 by the two printed boards 130A and 130B, the electron emitter 142 is described above. The mechanism suppresses the generation of ozone and generates many negative ions.

Referring to FIG. 27, in the electron emitter 142 shown in FIG. 25, the electron emitter 143 replaces the needle electrodes 2 and 2 with the linear needle electrodes 2 and 2. Same as the electron emitter 141.

Referring to FIG. 28, in the electron emitter 142 shown in FIG. 26, the electron emitter 144 replaces the needle electrodes 2 and 2 with the linear needle electrodes 2 and 2. Same as electron emitter 142.

Referring to FIG. 29, the electron emitter 145 includes two needle electrodes 2 and 2, a printed board 130 having wirings 131, an insulator 132, and wirings 7 and 8. do. The two needle electrodes 2 and 2 have a linear shape. The needle electrodes 2 and 2 are fixed to the printed board 130 by a part of the needle electrodes 2 and 2 inserted into the printed board 130.

In the electron emitter 145, the wiring 131 is disposed on the same surface as the surface of the printed board 130 on which the needle electrodes 2 and 2 are fixed. The insulator 132 is formed on the surface of the printed board 130 to cover the wiring 131. The wiring 7 is connected to the needle electrodes 2 and 2, and the wiring 8 is connected to the wiring 131.

In the electron emitter 145, since the wiring 131 as the counter electrode 3 is insulated from the needle electrodes 2 and 2 by the insulator 132, the electron emitter 145 is in accordance with the same mechanism as described above. It suppresses the generation of ozone and generates more negative ions.

Referring to FIG. 30, the electron emitter 146 includes a needle electrode 2 (2A), a counter electrode 133, and an insulator 134. The counter electrode 133 consists of a tube which has 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. In addition, the needle electrode 2 enters into the counter electrode 133, and only the tip 2A comes out of the counter electrode 133. The needle electrode 2 is connected to the wiring 7, and a negative voltage of -5 kV to -9 kV is applied. In addition, the counter electrode 133 is connected to the wiring 8 and a ground voltage (0V) is applied.

In the electron emitter 146, since the counter electrode 133 is insulated from the needle electrode 2 by the insulator 134, the electron emitter 146 suppresses the generation of ozone in accordance with the same mechanism as that described above. Generates many negative ions.

Referring to FIG. 31, the electron emitter 147 includes the needle electrode 2 and the wirings 135 and 136. The wirings 135 and 136 consist of ordinary wirings covered by an insulator. The wirings 135 and 136 are arranged such that one end thereof contacts 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 -5 kV to -9 kV is applied. In addition, the wirings 135 and 136 are connected to the wiring 8 and a ground voltage (0V) is applied. In the electron emitter 147, since the wirings 135 and 136 as the counter electrode 3 are insulated from the needle electrode 2 by an insulator, the electron emitter 147 generates ozone according to the same mechanism as described above. And more negative ions are generated.

Even if the electron emitters 140 to 147 shown in Figs. 24 to 31 are applied to any of the negative ion generating devices 10 to 10E, as described above, the generation of ozone is suppressed and more negative ions are applied. Can be generated.

In the above description, the medium present between the two electrodes has been described as being air, but in the present invention, the medium present between the two electrodes is not limited to air, and other media may be used.

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

That is, the present invention can be applied to a negative ion generating device that preferentially generates negative ions without generating discharge in a medium existing between two electrodes.

In the above description, the counter electrode 3 has been described as having a ground voltage (0 V) applied thereto. 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 to each other. A positive voltage that generates an electric field weaker than the dielectric breakdown field of the medium existing therebetween may be applied to the counter electrode 3.

In the above description, the negative ion generating devices 10 to 10E generate negative ions. However, a positive voltage in the range of -5 kV to -9 kV is applied to the needle electrode 2, and the ground voltage (0 V) is applied. By being applied to the counter electrode 3, the negative ion generating apparatuses 10 to 10E generate only positive ions by the same mechanism as that described above. The amount of positive ions generated is equal to the amount of negative ions described above.

Therefore, the above-mentioned negative ion generating devices 10 to 10E constitute an ion generating device that generates only negative ions or only positive ions.

In addition, an ion generating device that generates only negative ions or only positive ions is applied to an electrostatic removing device. In the ion generating device applied to the static elimination device, a negative voltage and a ground voltage (0 V) of -5 kV to -9 kV are applied to the needle electrode 2 and the counter electrode 3 for a period of time to generate negative ions, and 5 kV to 9 kV. Is applied to the needle electrode 2 and the counter electrode 3 for a period of time to generate positive ions. As described above, the ion generating device that alternately generates negative ions and positive ions at regular intervals is suitable for the static electricity removing device.

 INDUSTRIAL APPLICABILITY The present invention is applicable to an ion generating device which generates an electric field weaker than the dielectric breakdown field of air between the needle electrode and the counter electrode to generate ions.

Claims (40)

The negative electrode 2, A negative voltage having a positive electrode and a negative electrode and for generating an electric field between the negative electrode 2 and the positive electrode that is weaker than the dielectric breakdown field of the medium present around the negative electrode 2 from the negative electrode; And a voltage application circuit (6) applied to the electrode (2). A negative electrode 2 to which a predetermined negative voltage is applied; It is provided by setting the predetermined distance from the sub-electrode 2, the counter electrode 3 covered with an insulator (4), The predetermined negative voltage is an electric field weaker than the dielectric breakdown field of the medium existing between the negative electrode 2 and the counter electrode 3 between the negative electrode 2 and the counter electrode 3. It is a voltage to generate | occur | produce in the ion generating apparatus characterized by the above-mentioned. The method of claim 2, The counter electrode (3) is an ion generating device, characterized in that consisting of a covering wire (135, 136). The sub-electrode 20 whose main body portion 2c except for the tip portion 2A is covered by the insulator 9, It is provided with the counter electrode (3) for generating a predetermined electric field between the negative electrode 20, 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. Secondary electrodes 2 and 20, The counter electrode 3, An insulator (4, 9, 12) provided between the sub-electrodes (2, 20) and the counter electrode (3); An electric field weaker than the dielectric breakdown field of the medium existing between the sub electrodes 2 and 20 and the counter electrode 3 is generated between the sub electrodes 2 and 20 and the counter electrode 3. And a voltage applying circuit (6) for applying a negative voltage to the negative electrodes (2, 20). The method of claim 5, Said insulator (4) covers said counter electrode (3). The method of claim 6, The insulator (4) is an ion generating device, characterized in that made of any one of glass, ceramics, resin and semiconductor. The method of claim 5, And the insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 8, The insulator (9) is made of any one of glass, ceramics, resins and semiconductors. The method of claim 5, The insulators 4 and 9 consist of first and second insulators, The first insulator 4 covers the counter electrode 4, And the second insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 10, The first and second insulators (4, 9) are made of any one of glass, ceramics, resin and semiconductor. Secondary electrodes 2 and 20, A counter electrode (3) for generating a predetermined electric field between the sub electrodes (2, 20); An insulator (4, 9, 12) provided between the sub electrodes (2, 20) and the counter electrode (3), And the predetermined electric field is an electric field weaker than the dielectric breakdown electric field of the medium existing between the sub-electrodes (2, 20) and the counter electrode (3). The method of claim 12, Said insulator (4) covers said counter electrode (3). The method of claim 13, Said insulator (4) consists of any one of glass, ceramics, resin, and a semiconductor. The method of claim 12, And the insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 15, The insulator (9) is made of any one of glass, ceramics, resins and semiconductors. The method of claim 12, The insulators 4 and 9 consist of first and second insulators, The first insulator 4 covers the counter electrode 3, And the second insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 17, The first and second insulators (4, 9) are made of any one of glass, ceramics, resin and semiconductor. A case 1 having an opening 11, 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 disposed in the case 1 and emitting electrons from the opening 11 to the outside of the case 1, The electron emitter, A negative electrode 2 emitting the electrons; A negative voltage having a positive electrode and a negative electrode and for generating an electric field between the negative electrode 2 and the positive electrode that is weaker than the dielectric breakdown field of the medium present around the negative electrode 2 from the negative electrode; And a voltage applying circuit (6) applied to the electrode (2). A case 1 having an opening 11, 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; An electron emitter disposed in the case 1 and emitting electrons from the opening 11 to the outside of the case 1, The electron emitter, A negative electrode 2 to which a predetermined negative voltage is applied, and emits electrons; A counter electrode 3 disposed at a predetermined distance from the sub-electrode 2 and covered by a second insulator 4; The predetermined negative voltage is an electric field weaker than the dielectric breakdown field of the medium existing between the negative electrode 2 and the counter electrode 3 between the negative electrode 2 and the counter electrode 3. It is a voltage to generate | occur | produce in the ion generating apparatus characterized by the above-mentioned. The method of claim 20, The counter electrode (3) is an ion generating device, characterized in that the cover wire (135, 136). A case 1 having an opening 11, 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; An electron emitter disposed in the case 1 and emitting electrons from the opening 11 to the outside of the case 1, The electron emitter, The sub-electrode 20 whose main body portion 2c except for the tip portion 2A is covered by the second insulator 9, A counter electrode (3) for generating a predetermined electric field between the sub-electrode (20), 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. A case 1 having an opening 11, 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; An electron emitter disposed in the case 1 and emitting electrons from the opening 11 to the outside of the case 1, The electron emitter, Secondary electrodes 2 and 20 emitting the electrons; The counter electrode 3, Second insulators 4 and 9 provided between the sub-electrodes 2 and 20 and the counter electrode 3; An electric field weaker than the dielectric breakdown field of the medium existing between the sub electrodes 2 and 20 and the counter electrode 3 is generated between the sub electrodes 2 and 20 and the counter electrode 3. And a voltage application circuit (6) for applying a negative voltage to the negative electrode (2, 20). The method of claim 23, wherein Said second insulator (4) covers said counter electrode (3). The method of claim 24, The first and second insulators (13,4) are made of any one of glass, ceramics, resin and semiconductor. The method of claim 23, wherein And the second insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 26, The first and second insulators (13, 9) are made of any one of glass, ceramics, resin and semiconductor. The method of claim 23, wherein The second insulators 4 and 9 are made of insulators for the first and second electrodes, The first electrode insulator 4 covers the counter electrode 3, The second electrode insulator (9) covers the portion (2C) excluding the tip (2A) of the secondary electrode (20). The method of claim 28, 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. A case 1 having an opening 11, 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; An electron emitter disposed in the case 1 and emitting electrons from the opening 11 to the outside of the case 1, The electron emitter, Secondary electrodes 2 and 20 emitting the electrons; A counter electrode (3) for generating a predetermined electric field between the sub electrodes (2, 20), A second insulator (4, 9) provided between the sub-electrodes (2, 20) and the counter electrode (3), And the predetermined electric field is an electric field weaker than the dielectric breakdown electric field of the medium existing between the sub-electrodes (2, 20) and the counter electrode (3). The method of claim 30, Said second insulator (4) covers said counter electrode (3). The method of claim 31, wherein Said first and second insulators (13,4) are made of any one of glass, ceramics, resin and semiconductor. The method of claim 30, And the second insulator (9) covers a portion (2C) excluding the tip portion (2A) of the secondary electrode (20). The method of claim 33, The first and second insulators (13, 9) are made of any one of glass, ceramics, resin and semiconductor. The method of claim 30, The second insulators 4 and 9 are made of insulators for the first and second electrodes, The first electrode insulator 4 covers the counter electrode 3, The second electrode insulator (9) covers the portion (2C) excluding the tip (2A) of the secondary electrode (20). The method of claim 35, wherein 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 method according to any one of claims 1 to 36, The tip portion (2A) of the secondary electrode (2, 20) is pointed, characterized in that the ion generator. A first electrode 2 to which a predetermined voltage is applied, It is provided by setting the predetermined distance with the said 1st electrode 2, and providing the 2nd electrode 3 covered with the insulator 4, The predetermined voltage is an electric field weaker than the dielectric breakdown electric field of the medium existing between the first electrode 2 and the second electrode 3 and the first electrode 2 and the second electrode. It is a voltage for generating between the electrode (3), The ion generating apparatus characterized by the above-mentioned. The first electrodes 2 and 20, The 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 the dielectric breakdown field of the medium existing between the first and second electrodes 2 and 20 and the second electrode 3 is applied to the first and second electrodes. And a voltage application circuit (6) for applying a voltage for generation between (3) to the first electrode (2, 20). The first electrodes 2 and 20, A second electrode 3 for generating a predetermined electric field between the first electrodes 2 and 20, An insulator (4, 9, 12) provided between the first electrode (2, 20) and the second electrode (3), And the predetermined electric field is an electric field weaker than the dielectric breakdown electric field of the medium existing between the first electrode (2, 20) and the second electrode (3).

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