JP2020161465A5 - - Google Patents

Description

Ion generator

The present invention improves the ion balance in the air and obtains an atmosphere equivalent to the balance in the natural world to provide a comfortable living environment, and secondarily, sterilization and deodorization, or improvement of health and constitution, etc. With respect to an ion generator, or a generator of ozone or a mixture thereof.

It is known that negative ions are generated near water fields such as mountain streams and waterfalls due to the Lenard effect, and as a result, the amount of negative ions is large in forests and suburbs, and positive ions are hardly observed. On the other hand, in urban areas and offices, there are few negative ions and many positive ions.

Paradoxically, the shortage of negative ions in urban areas suggests the effects of negative ions, and it has been studied in Germany and other countries since the 1910s. In recent literature, negative ions have a positive effect on the human body and positive ions have an adverse effect because of the effects of relieving stress and anxiety, sterilizing bacteria, and reducing mites and the like. Against this background, various devices that improve the ion balance by supplying negative ions are provided. There are two types of methods, the water particle method and the discharge method, and this paper refers to the discharge method.

The discharge method involves the generation of ozone, and many devices generate negative ions and ozone. Ozone has sterilization, decomposition of organic substances, deodorizing ability, etc., which is almost the same as the effect of negative ions reported in the literature. For this reason, the effect of the discharge-type generating substance is not only due to negative ions but also due to ozone. Therefore, in this paper, a generator including ozone, negative ions, and a combination of both is referred to.

FIG. 1 is a specific example of the conventional example "negative ions or an ozone generator that diffuses negative ions and ozone" (Patent Document 1), in which dust adhering to the needle electrodes is removed by using the cylindrical electrode and the needle electrode portion as a detachable cartridge. It can be easily cleaned, and the use of ion air eliminates the need for a fan.

FIG. 2 is a specific example of the conventional example “negative ion generator” (Patent Document 2), in which dust adhesion to the needle electrode is suppressed by an AC power supply, and the counter electrode side is set to a negative potential bias by a discharge current, and negative ions are generated. In addition to preventing the absorption of positive ions, the positive ion density is reduced by absorbing positive ions.

Japanese Unexamined Patent Publication No. 2000-082567 (Fig. 1) Japanese Unexamined Patent Publication No. 2004-033875 (FIGS. 1 and 2)

Patent Document 1 (Fig. 1) is characterized by a "cartridge" that can clean the needle electrode and a fanless "ion-like structure", but cleaning of this type of equipment is required approximately every month, and the following issues arise. be.
Problem 1) The electrode cleaning period varies depending on the degree of air pollution.
Problem 2) Lint adheres to the electrodes by electrostatic force, causing a short circuit between the electrodes.
Problem 3) The amount of ion generated depends on the ion wind and is stabilized by the corona shield effect.
Problem 4) Monthly cleaning maintenance responsibilities are not realistic for home use.

In Patent Document 2 (FIG. 2), the AC power supply makes it difficult for dust to adhere to the electrodes, and a negative potential bias due to a discharge current is applied to the counter electrode side to reduce negative ion adsorption and absorb positive ions. There is a problem.
Problem 5) The AC power supply is a transformer type and large in size, has a large current capacity, and requires short-circuit protection.
Problem 6) In the AC method, positive ions, which are considered to be adverse effects, remain.
Problem 7) Since the negative potential of the counter electrode uses a discharge current, it easily fluctuates due to dust or the like.

The ion generator of the present invention comprises a fan for blowing air, a first needle electrode having a negative potential provided immediately after the fan, and the first needle electrode behind the first needle electrode. It is provided with a second needle electrode having a negative potential provided at a separated position and a cylindrical electrode provided behind the second needle electrode and having a lower negative potential than the second needle electrode. It is a feature.

Many negative ion generators on the market show lint, dust, and dirt adhering to the electrodes between the internal electrodes about one month after continuous operation. For this reason, the electrodes are generally cleaned every month, which complicates maintenance. The means for facilitating these will be described below.

The stain countermeasures by the filter will be explained. As a countermeasure against electrode contamination, it is effective to prevent the dust from reaching the electrode, which is the cause of the dust. For this reason, lint and dust are blocked by providing a large filter at the air intake port and using it in combination with a fan for blowing air. Since the ion generator is different from the large displacement air purifier, the fan can rotate at a low speed, and the filter replacement cycle can be extended by combining it with a large filter. This also prevents flammable lint and the like from adhering to the electrodes and causing ignition due to a discharge arc or the like.

The measures against pollution caused by low-speed rotation of the fan will be explained. From the above, the fan may rotate at a low speed, and the reduction of the integrated rotation amount due to this makes it possible to reduce the total amount of passing air, and the pollution accumulation proportional to the reduction is improved. This also extends the filter cleaning and replacement cycle.

The stain countermeasures by controlling the fan and electrode voltage will be explained. Specifically, the filter replacement cycle can be extended by providing a clock function, controlling the fan rotation and electrode voltage for the required amount of generation according to time, and incorporating a rest period, etc., so that full power operation is not performed for 24 hours.

For example, continuous discharge is controlled, the discharge level is adjusted according to the time zone, and as a result, the discharge accumulation time is reduced. If a clock function is attached, the amount of passing air can be reduced and pollution can be reduced by appropriately controlling the rotation and discharge voltage of the fan at specified time zones. If operated at a substantially 50% efficiency, the life will be doubled. In this way, program operation is also a solution.

During the time when daily activities are remarkable during the daytime, negative ions are deficient including the opportunity of external ventilation, and it is necessary to generate a relatively large amount of negative ions. On the other hand, the living energy level is low at night, and a small amount of ions may be supplied. By finely controlling the fan rotation and the electrode voltage in the time zone including the pause, it is possible to minimize the contamination of the electrode, which is proportional to the amount of passing air.

We will explain the measures against pollution by controlling the strength of the fan. The fan to be used usually rotates at a low speed, for example, about 20% of the maximum load, and is in a state of use with a considerable margin up to the maximum rotation wind speed. Therefore, the fan can be intermittently rotated with a strong maximum load to generate strong and weak vibrations of air, and dust adhering to the filter and surrounding structures can be purged to some extent.

Furthermore, by using a fan that rotates in the forward and reverse directions to cause similar air vibrations in the forward and reverse directions, the swing width of the air vibrations increases, and some of the dust that has entered the back of the filter is more effective due to the wind pressure in the opposite direction. It is spit out and can be further purged. By dropping these dusts and storing them in a dust trap or the like, it is possible to avoid the recirculation of the dusts.

The stain countermeasures by the ion repulsion absorption sheet will be explained. The reason why a general ion generator emits a large amount of negative ions is that the emitted negative ions are immediately absorbed by the floor of the room, etc., and the negative ions inside the room continue to be replenished every moment. Because. Conversely, if it is prevented from being absorbed in various parts of the room, the amount of ion generated can be suppressed.

First, an ion repulsion absorption sheet having a negative potential is installed outside the main body device to prevent the negative ions discharged into the room from being absorbed by the floor. This eliminates the need to supply full power for the ions that have been prevented from being absorbed.

By suppressing the absorption of ions in the entire room in this way, it is not necessary to wastefully generate negative ions at the maximum power, and the operating efficiency can be improved. Since the reduction of the fan rotation speed can be controlled, the adhesion of contaminants can be reduced and the cleaning interval can be extended. For example, if the amount of ion emission can be suppressed to 20% or less, the life of electrode cleaning will be extended by 5 times.

The dust collecting function of the ion repulsion absorbing sheet will be described. The ion repulsion absorption sheet installed outside the main body is controlled, and first, the negative potential prevents the absorption of negative ions and fills the room with high-density negative ions. As a result, the charging time is waited until the room is filled with the negative ion shower from the main body or the fine particles such as pollen and PM2.5 are sufficiently negatively charged. After that, if a positive potential is applied to the ion repulsion absorbing sheet, the negatively charged polluted particles are efficiently absorbed, so that the room can be used as a kind of dust collector.

Next, prevention of adhesion of fine particles passing through the filter of the ion generator to the internal structure of the main body will be described. Some of the fine particles, especially the positively charged fine particles, are attracted to the negative potential needle electrode by electrostatic force. For this reason, first, almost all the electrodes and structures that the flux touches are set to have a negative potential with respect to the ground, although there are differences in levels. As a result, negative ions and negatively charged particles can be prevented from adhering to the electrodes and structures. In particular, by setting the counter electrode of the negative potential needle electrode to a relatively low level of negative potential, the contamination of the counter electrode is reduced.

Then, the existing positively charged particles are negatively charged. This can prevent the electrode marking fine particles inside from adhering by forcibly negatively charging the positively charged fine particles by a negative ion shower in the pre-stage immediately after passing through the filter.

In relation to the above, measures against dust intrusion from the opening of the discharge port will be described. Negative ion generators on the market are of the type in which the discharge port on the extension of the needle tip is wide open so that the ions are not adsorbed by the structure on the route because the ions are discharged on the extension of the needle electrode. There are many.

However, since dust and pests invade through these openings, if a mesh structure is provided to prevent the invasion and the mesh structure is set to a relatively low negative potential, negative ions will permeate without being adsorbed. At this time, since it is important to obtain the effect of preventing adsorption that the negative potential of the absolute potential is accurate with respect to the ground of the reference potential, a stable potential fixing means with the ground is also provided at the same time. According to the test results, it has been confirmed that by setting the mesh structure to an appropriate negative potential with respect to the ground, negative ions are discharged as they are without being absorbed.

In relation to the above, the importance of "potential with respect to the earth" as a potential reference will be described. When applying a potential to each structural part for ion repulsion or absorption, it is important to set the absolute potential with respect to the ground. If the potential is negative with respect to the ground, the negatively charged particles are not absorbed because the lines of electric force on the electrode surface are repelled. On the contrary, if it is a positive potential, it will be absorbed. For this reason, it is very important to reliably supply the ground potential that serves as a reference for the potential of the device. The reference potential can be regarded as grounding from the viewpoint of the applied potential. For example, even at the midpoint where alternating current is divided by resistance, it can be regarded as quasi-grounding if a higher potential is applied, so these are used as quasi-grounding potentials. May be good. Of course, if the ground potential can be surely obtained, it may be used.

The functional deterioration due to the discharge of the needle electrode will be described. The electrodes are contaminated by minute discharges that cause the air composition to deteriorate and adhere, and even if dust control is thoroughly carried out, these increase the radius of curvature of the needle and affect the discharge performance. In general needle electrode discharge, the radius of curvature of the needle tip is 10 to several tens of μm, and negative ions are triggered and ozone is generated by local discharge due to a local unequal electric field of 0.1 mm or less at the needle tip. The particles and compounds adhering to the tip greatly change the radius of curvature and deteriorate the discharge function. For this reason, the needle needs to be cleaned regularly.

An automatic cleaning function for removing stains on the needle tip will be described. The tip of the needle, which has finally accumulated stains, needs to be removed and polished, but this can be solved by an automatic cleaning function that polishes the tip of the needle or a simple manual cleaning function that can be performed without removing it. This method includes a rotary cleaning structure, a sliding cleaning structure, and the like. However, in each case, in order to efficiently remove the stain on the tip of the needle, a spring mechanism for closely contacting the tip is attached. If necessary, the spring mechanism may be accompanied by a file structure made of an insulating material such as aluminum oxide.

The discharge DENDEN electrode is a diagram showing a conventional example of a removable cleaning possible with the ion generator as a cartridge. Giving a negative potential at a discharge current to the pair counter electrode is a diagram showing a conventional example to suppress ion absorption. It is explanatory drawing of the necessity of the electric potential with respect to the earth. It is a figure which shows the relationship between an AC power source, an outlet, and grounding. It is an AC midpoint potential output circuit diagram . It is a figure which shows the output potential comparison when the AC power source is used as a quasi-grounded circuit. It is a figure which shows the example of the needle electrode near the fan, and the needle electrode and the cylindrical electrode installed apart from the fan. It is a figure which shows the example of the needle electrode near the fan, and the needle electrode and the mesh electrode installed apart from the fan. It is a figure which shows the angular positional relationship of two kinds of needle electrodes. It is a figure which shows the automatic cleaning mechanism of the needle electrode of the fan outer edge portion. It is a figure which shows the automatic cleaning mechanism of the structure of the needle electrode and the cylindrical electrode of the fan outer edge part. It is a figure which shows the back electrode which controls the ion generation performance of the needle electrode of the fan outer edge portion. It is an image figure which changes the electric field distribution of a needle electrode by a back electrode. It is a figure which shows the example which applied the electric wire-shaped back electrode to the needle electrode of the fan outer edge part. It is a figure which shows the example which constructed the ion generation control by Paschen's law by the Benchery effect. It is explanatory drawing of Paschen's law and the relationship between atmospheric pressure and electric discharge. It is a figure which shows the development example of the structure which applied the Bencherry effect. It is a figure which shows the development example of the structure which applied the Bencherry effect. It is a figure which shows the development example of the structure which applied the Bencherry effect. It is a figure which shows the development example of the structure which applied the Bencherry effect. It is a figure which shows the warning of the proper cleaning interval by an ion sensor. It is explanatory drawing of the method of giving an electric potential to an external structure and controlling an ion. It is a figure which shows the circuit which obtains a stable negative potential from an AC power source. It is a figure which shows the circuit which obtains a stable negative potential from an AC power source. It is a figure which shows the unstable example of the circuit which obtains a negative potential in Cockcroft-Walton from an AC power supply. It is a figure which shows the example of the stabilization circuit which obtains a negative potential with Cockcroft-Walton from an AC power supply.

First, the ground potential that is important for stabilizing the function will be described. In this proposal, taking negative ions as an example, when negative ions are repelled to suppress absorption, the structure is set to a negative potential, and when negative ions are to be absorbed, the target structure is set to a positive potential to repel the ions. And control of absorption. Even when it is a cation, it is the same except that the polarity is reversed.

What is important here is that the potential at this time is exactly an absolute negative potential or a positive potential with respect to the earth. As a result, the negative ions are repelled by the negative charge 19 on the surface of the electrode having a negative potential, and the absorption of the negative ions is suppressed. On the contrary, the cations are repelled by the positive charge 18 on the surface of the electrode having a positive potential and suppress the absorption of the cations. Thus within the structure, in terms of controlling the rebound and absorption of ions, ensuring the reference potential of the ion-generator 58 (see FIG. 22) it is extremely important.

FIG. 3 is an explanatory diagram of this example with a positive charge 18. In FIG. 3A, since the A electrode 5 is used as the positive electrode by the DC power supply 9, the positive electric charge 18 from the outside repels the electric lines of force and suppresses absorption. On the contrary, when the negative electrode property is used, the absorption of the negative charge 19 is suppressed.

On the other hand, in FIG. 3B, a DC power supply 9 is similarly connected between the A electrode 5 and the B electrode 6, and the A electrode 5 is a positive electrode when viewed from the power supply. However, since the B electrode 6 is floated to fix the potential of the power supply, the potential of the A electrode 5 is uncertain when viewed from the ground 14. Therefore, when the negative charges 19 from one as shown in the figure is supplied, is charged with A electrode 5 and the B electrode 6 both of negative charge 19, overall the bias of a negative potential is applied by the negative charge 19 become. As a result, the lines of electric force between the positive charge 18 and the positive charge 18 act as an attractive force, and the positive charge 18 is absorbed regardless of the polarity of the DC power supply 9. This is the same even in the case of a negative charge 19 , if the A electrode 5 is positively charged for some reason. Since the entire electrode is floating, the surrounding charge behaves unpredictably depending on the conditions.

A means for stably securing the ground potential will be described.
Although FIGS. 4 (a) shows an example of 2P outlet 20 of the commercial AC power source 12, one is grounded, but because in many cases the plug side may merge with either polarity, either the polarity of the ground 14 Whether to do it depends on the user side and is uncertain. Therefore, the device side cannot determine the installation side of the AC power supply 12 , and the grounding 14 cannot be completed.

FIG. 4B shows an example of a 3P outlet 21, which can stably secure the grounding 14 , but since all households do not have this type, the user also can stably secure the grounding 14. That is difficult.

FIG. 5 shows a circuit in which an AC midpoint potential is obtained by a pressure dividing resistor 22 as a method of using it as a quasi-ground potential by surely obtaining a potential close to the ground potential when a stable ground potential cannot be secured. Is. In this example, the AC midpoint potential 23 in the figure does not exceed ± 50V in effective value (± 71V in peak value), the target potential is sufficiently higher than this, and if it can be relatively ignored, it is stably grounded. It can be used as 14. Hereinafter, this AC midpoint potential 23 will be treated as the quasi-ground potential in the present invention.

Each figure of FIG. 6 is a description of a range of generated potentials when the AC terminal is directly treated as a fixed potential terminal and when the AC midpoint potential 23 is used. If there is no problem, it may be used directly as in this example, but usually, the AC midpoint potential 23, which has less voltage fluctuation and halves the voltage, is set as the quasi-ground potential.

FIG. 7 is a basic example of the present proposal.
First, the filter 24 removes large dust to prevent the dust from entering the inside. The filter 24 is relatively large, for example, the entire back surface is made into the filter 24 . On the other hand, unlike the air purifier that discharges a large amount of air, the ion generator 58 requires a small amount of displacement, and the fan 7 normally is in a relatively breeze state at low speed rotation. Therefore, the amount of dust adhering to the filter 24 is smaller than that of the air purifier. These replacement life of the filter 24, it becomes possible to prolong a slow rotation of the large size and the fan 7 of the filter 24. As a result, the fouling speed of the electrodes is also reduced, so that the cleaning period of the electrodes can be extended.

Next, it is about the fine particles that pass through the filter 24. Regarding this, first, almost all of the internal structures including the cylindrical electrode 1, the case 8 and the discharge port 25 are set to a negative potential by the DC power supply 9, and the needle electrode 2 as the first needle electrode provided immediately after the fan 7 is provided. The first negative ion is generated at, and the fine particles that have entered the inside are negatively charged by the negative ion shower . After its provided an ion generating portion of the needle electrode 2 and the cylindrical electrode 1 as a second needle electrodes provided on the rear of the needle electrode 2 as the first needle electrodes.

Here, the fouling of the needle electrode 2 immediately after the fan 7 is less likely to be fouled because it is exposed to the wind speed turbulence at the outer edge of the fan 7, and its cleaning cycle is longer than that of an electrode combining a normal needle and a cylinder. There is. On the other hand, the combination portion of the needle electrode 2 and the cylindrical electrode 1 as the second needle electrode is liable to adhere dust and has a short cleaning cycle.

As a result, the fine particles that cause fouling are first negatively charged by the needle electrode 2 as the first needle electrode in the negative ion shower, and then include the needle electrode 2 as the second needle electrode. Since the internal mechanism has a negative potential, it is discharged to the outside as it is without being adsorbed. As a result, electrode contamination is prevented.
The grounding 14 here may be the AC midpoint potential 23 described in FIG. 5 as long as an appropriate potential difference can be obtained from the negative potential value.

FIG. 8 shows the cylindrical electrode 1 of FIG. 7 as a mesh-shaped counter electrode 27. Usually, in a combination of the needle electrode 2 and the cylindrical electrode 1, the opening of the cylindrical electrode 1 becomes the external opening as it is, as shown in FIG. 1 of the conventional example. This is because if there is a structure on the extension of the needle, ions will be absorbed by the structure, so the opening will be large, but foreign matter can come into contact with the discharge part from the outside, and a thin rod It is also dangerous because it can be carried in.

In the present invention, by making these opening structures a mesh of negative potential, it is possible to allow ions to pass through without absorbing negative ions. Furthermore, the mesh structure can prevent backflow of dust, foreign matter, rods, etc. from the outside. In addition, by using a metal mesh, it is possible to have a safe flameproof function. Ion-generator 58 of the discharge system, and dust and lint and the like are attached to the tip of the needle electrode 2, the possibility of fire in the partial discharge arc like but not be completely eliminated, the metal mesh structure Due to the flameproof function by adoption, it prevents the spread of fire to the outside and becomes an intrinsically safe structure. In this case, as a matter of course, in order to prevent the spread of fire, it is preferable to cover the discharged portion with metal together with other portions.

FIG. 9 shows the positional relationship of the needle electrodes 2 which are stylistically classified into two locations in FIGS. 7 and 8. The combination of the cylindrical electrode 1 and the needle electrode 2, which is the first mode, has a structure in which ozone is relatively easily generated and dirt on the electrode is also relatively easily generated. The second mode, the combination of the needle electrode 2 and the fan 7, has a structure in which the amount of ozone generated is relatively small and the outer edge of the fan 7 is relatively resistant to fouling due to turbulent air flow.

FIG. 9 shows an example in which a separation angle α26 centered on the axis of the fan 7 is provided in order to make the two discharge structures functionally independent. The negative ions generated by the needle electrode 2 at the outer edge of the fan 7 due to the rotation of the fan 7 are effective when the discharge mechanism of the combination of the cylindrical electrode 1 and the needle electrode 2 is placed immediately after the turbulent flow in the rotation direction. There is a possibility that particles charged with negative ions will not enter the area. If the negative ions are not charged, the possibility of adsorption to the electrode increases. Therefore, the separation angle α26 is provided so that the fine particles are sufficiently charged to a negative potential due to the turbulent flow due to rotation. As a matter of course, if the two types of discharge structures are sufficiently separated from each other, both mechanisms may exist on the same line. In that case, the separation angle α26 becomes zero.

FIG. 10 is an example of an automatic cleaning function that essentially eliminates manual cleaning work.
In this figure, a plurality of needle electrodes 2 are arranged coaxially toward the center on the outer edge of the fan 7, and a rotary cleaning plate 28 having cleaning springs 29 attached upside down at both ends is added. The rotary cleaning plate 28 is rotated by a motor 30 or the like, and the needle tips of the respective needle electrodes 2 are rubbed against each other by a cleaning spring 29 at positions B and B'in the drawing for cleaning. At this time, the file mechanism 31 may be installed at the contact portion of the cleaning spring 29 so as to match the sliding portion between the cleaning spring 29 and the tip of the needle electrode 2. For example, a diamond sandpaper may be attached, powder such as aluminum oxide may be formed on the surface, or the surface of the spring may be processed into irregularities to obtain the same effect as the file. In this example, the cleaning spring 29 may be a quasi-spring structure such as a brush spring or a sponge that can be dented so that the tip of the needle can be pushed and slid with a certain amount of stress.

In this example, since the left and right cleaning springs 29 are also attached in the upside-down direction, the upper and lower parts of the needle electrode 2 can be cleaned. The cleaning spring 29 may be configured by only one piece. A plurality of these cleaning mechanisms may be combined. The tip of the cleaning spring 29 may be inclined according to the angle of the needle. As a result, the tip of the needle can be polished, so that it can be effectively cleaned. Here, the reason why the spring is used is to allow the needle to act slightly, and to prevent a gap from being opened and the needle and the tip of the spring from rubbing against each other.

The rotary cleaning plate 28 is normally reserved at the position A in FIG. 10, and is set at a position that does not affect the surface electric field of the needle electrode 2 that generates ions. The method of fixing at the position A includes a pulse motor, a lock mechanism by a sensor, and the like, but the method does not matter as long as it can be fixed at the shelter position at normal times. Further, although the motor 30 is used in this example, the rotation may be any as long as the rotation of the rotary solenoid or the like can be obtained.

FIG. 11 is an example of an automatic cleaning mechanism when the direction of the needle electrode 2 of FIG. 10 is perpendicular to the fan 7 and the cylindrical electrode 1 is held. The direction of the cleaning spring 29 is also vertical in accordance with the needle electrode 2, and the shape is different from that of FIG. 10 in that the rotary cleaning plate 28 slips through the gap between the cylindrical electrode 1 and the needle electrode 2, but the others are the same. Although the cylindrical electrode 1 is provided in this example, it may or may not be a plate having a mesh structure or a porous structure to which a negative potential is applied instead of a cylinder. The counter electrode is effective when emitting ozone or the like at the same time, and in that case, the counter electrode is required.

12, characterized in that disposed behind the back electrode 32 from the tip of the needle of the needle electrode 2 of ion generation portion of the ion-generator 58 to the needle electrodes 2 a plurality placed on the outer edge of the fan 7 be. When the potential of the back electrode 32 is changed from the negative potential to the ground potential by switching the changeover switch 33, the potential distribution at the tip of the needle electrode 2 changes, the electric field becomes stronger, and a large amount of negative ions can be generated.

In this way, by controlling the potential of the other electrode behind the needle tip, the potential distribution of the needle tip can be changed to control the amount of ions generated. In this example, the negative potential is set to the ground potential, but conversely, if it is set to the positive potential, the electric field is further distorted and more negative ions can be generated.

By doing this, when you really want to generate a large amount of negative ions and when you do not need to generate so much, you can appropriately control according to the situation, so you can always discharge a large amount of ions as before. As a result, the accumulation of wear and stain on the electrode is improved, and the stain on the electrode can be kept to a minimum.

The back electrode 32 is a name meaning the back surface of the needle tip, and it is sufficient that the back electrode 32 is located behind the tip end and distorts the electric field shape of the needle tip by controlling the potential of the back electrode 32. ..

FIG. 13 is an image diagram illustrating that by controlling the potential of the back electrode 32, the potential distribution at the tip of the needle changes and the electric field at the tip becomes stronger. When the potential of the back electrode 32 is changed from the negative potential to the ground potential by the changeover switch 33, the equipotential lines change as shown in this figure, the electric field distribution at the tip of the needle becomes more distorted, the electric field becomes stronger, and negative ions are generated. Occurs in large numbers. This method is described using negative ions in this example, but even in the case of positive ions, they are equivalent only in the opposite polarities.

FIG. 14 shows an example in which the back electrode 32 of FIG. 12 is configured by using an electrically linear back electrode 35 using a wire material having high high voltage performance and easily obtained, such as a silicon insulated wire. In the case of electric wires such as silicon-insulated electric wires, the dielectric strength is high and the wiring is easy to route, which makes it possible to safely and easily control the amount of negative ions generated. As a result, it is possible to minimize the wear and tear of the needle electrode 2. It does not have to be a silicon wire as long as it has an appropriate withstand voltage performance.

12, 13, and 14 have a structure in which a back electrode 32 and an electric back electrode 35 are formed as auxiliary electrodes behind the tip of the needle electrode 2 for discharging to control the electric field at the tip of the needle electrode 2. explained. Although it depends on the voltage and arrangement, experiments have shown that the amount of ions generated has the effect of changing several times. Therefore, by controlling the potential of such an auxiliary electrode, the amount of ion generation is appropriately controlled. Therefore, it is necessary to discharge a large amount of negative ions when necessary and to differentiate from the normal time. Only then can the electric field at the tip of the electrode be controlled. Since the fouling of the electrode tip and the amount of ions generated are linked to some extent, appropriate control of the tip electric field is effective in keeping the fouling at the minimum necessary. For example, by attaching a clock function, it is possible to control the generation of a large amount of ions only in the daytime when the living energy is large and the amount in a small amount at night by controlling the back electrode 32 , and efficiently manage the discharge electrode. Is possible.

FIG. 15 is another example in which the control of atmospheric pressure by the Bencherry effect is used to prevent electrode fouling. The needle electrode 2 is formed inside the branch tube negative pressure portion 38. As a result, the main flow bundle 44 of the air from the main pipe 39 generates a negative pressure flow bundle 45 due to the Bencherry effect, the inside of the branch pipe negative pressure portion 38 becomes negative pressure, and the generated negative ions are discharged together with the main flow bundle 44 at the discharge port 25. It is discharged to the outside. The cylindrical electrode 1 is provided outside the insulating pipe 41, but this may be inside as long as the mechanism may be complicated, and the cylindrical electrode 1 may not be provided as long as an appropriate discharge can be obtained. Further, if ozone or the like is not generated from oxygen or the like, the small diameter hole 36 formed in the insulating plate 37 behind the needle electrode 2 is unnecessary, but may be provided if necessary for internal air pressure control.

As a result, due to the configuration of the main flow flux 44 and the flow flux path, the inside of the branch pipe negative pressure portion 38 becomes a negative pressure compared to the atmospheric pressure, so that the discharge voltage drops according to Paschen's law and the discharge amount can be controlled. As a result, the appropriate amount of discharge can be controlled, and the fouling of the needle tip can be appropriately controlled. Further, by eliminating the small-diameter hole 36, if properly control the major flux 44, the internal pressure close to a vacuum, since the inside of the gas molecules is reduced extremely, and nitrogen and carbon dioxide by micro arc of the needle electrode 2 tip It is also possible to prevent the reaction from producing fouling substances and unintended substances. This makes it possible to significantly extend the life of the electrode. Although the potential is negative in this example, positive ions may be generated at a positive potential by changing the polarity, or positive / negative ions may be generated by the AC power supply 12. It is necessary when there are a large amount of negative ions and you want to reduce them, or when you dare to balance the positive and negative ions.

Even in this structure, if the tip of the needle is soiled for an unintended reason or foreign matter adheres, the foreign matter may be purged by air vibration in which the strength of the mainstream bundle 44 is changed in a pulsed manner. By temporarily reversing the direction of the mainstream bundle 44 , foreign matter may be purged by the same air vibration.

FIG. 16A is an explanatory diagram of Paschen's law. As is well known, FIG. 16A shows the relationship between the atmospheric pressure and the dielectric breakdown voltage, that is, the discharge voltage, and when the atmospheric pressure is lowered, the discharge voltage is lowered almost linearly up to a certain atmospheric pressure. As a matter of course, as is known from the vacuum switch, if the atmospheric pressure is further lowered to make the vacuum almost vacuum, the withstand voltage becomes high. In the case of vacuum, the wear of the electrodes is only due to the arc, so it is not necessary to consider the influence of gas. This proposal is in the middle of this, and controls the fouling of the electrodes by lowering the discharge voltage and reducing the amount of gas that reacts.

FIG. 16B is an image diagram of the relationship between the decrease in the partial discharge voltage and the atmospheric pressure. In this figure, the relationship between the atmospheric pressure and the altitude linked to the atmospheric pressure is shown instead of the atmospheric pressure, but it is known that the partial discharge voltage drops to nearly half at an altitude of 5000 m. This relationship between atmospheric pressure and discharge is used in this proposal.

FIG. 17 is an example in which FIG. 15 is simplified and a plurality of discharge electrodes are further provided. The needle electrode 2 is configured inside the insulating block 42, and the inside thereof is configured to have a negative pressure due to the mainstream bundle 44. Since the path of the negative pressure portion is simplified and the ion annihilation structure portion disappears, the ion is formed to be generated toward the mainstream flux 44, and the ion generation efficiency is improved. As a matter of course, the negative pressure suppresses the fouling of the electrodes. A hole having a small diameter may be formed in the insulating block 42 in order to generate ozone or the like, but a structure in which a part of the mainstream bundle 44 flows as an appropriate negative pressure may be used. When generating ozone, a hole for introducing a small amount of air in the insulating block 42 may be formed.

FIG. 18 is an example in which the insulating block 42 of FIG. 17 is configured as one. By installing it in the middle path of the mainstream bundle 44, the structure is such that an ion generating part can be easily added. In this way, as long as there is a mainstream flux 44, it is possible to easily generate ions. When generating ozone, a hole for introducing a small amount of air in the insulating block 42 may be formed.

FIG. 19 is another example in which the insulating block 42 is formed in a disk shape, the plurality of needle electrodes 2 are formed in the same direction as the mainstream bundle 44, and the opening is the same size as the disk in FIG. .. When generating ozone, a hole for introducing a small amount of air in the insulating block 42 may be formed.

20 (a) and 20 (b) show the needle electrode 2 and the insulating block 42 installed at the center of the mainstream bundle 44. In this case, it is structurally difficult to provide the plurality of needle electrodes 2. Therefore, when a plurality of needle electrodes 2 are provided, they are connected in series on the shaft. In this example, the target negative pressure is controlled by devising the shape of the insulating block 42, but the needle electrode 2 may be configured to be retracted as shown in FIG. 20A, or may be negative. If the pressure control is appropriate, the tip may be formed in a shallow portion of the hole as shown in FIG. 20 (b). If the tip of the needle is in a shallow portion, it is easy to remove foreign matter even if it adheres to the tip of the needle for an unintended reason. When generating ozone, a hole for introducing a small amount of air in the insulating block 42 may be formed.

FIG. 21 shows an example in which an ion detector 46 is provided near the inside of the discharge port 25 of the ion generator 58 and connected to the determination unit 47. As a result, when the predetermined amount of ions generated is not reached, it is determined that the electrode has been soiled, and the cleaning of the electrode is warned. Although the warning display and the like are not shown, it may be an electrode cleaning lamp or a warning sound. As a result, even if the progress of fouling changes depending on the atmosphere of the room, it will properly warn of the cleaning timing, so even though the level of fouling is low as in the past, it will be cleaned monthly. This can be prevented.

FIG. 22 shows that the proper amount of ions in the entire room is controlled by controlling the absorption and repulsion of negative ions discharged to the outside by a structure that gives an electric potential to the ground, and the results are reflected to generate ions. It controls the amount of ions generated in the vessel 58. This eliminates the need to operate the ion generator 58 at full power for 24 hours, and by performing the minimum operation according to the purpose, it is possible to keep the wear and stain of the internal discharge electrode to a minimum. be. This proposal refers to the power supply related to this.

Prior to that, an application example of this method will be described. For example, immediately after the operation of the ion generator 58, the power supply changeover switch 54 is connected to the positive power supply 51 so that the ion control mat 48 has a negative potential. As a result, a negative potential is induced in the ion control mat 48 with respect to the ground, and the negative ions or negatively charged particles 59 are repelled and remain in the air. Without this, the negative ions or negatively charged particles 59 are rapidly absorbed by the floor surface, which generally has a ground potential equal to the ground, and the ion density in the room drops rapidly. The generator 58 will be operated, and this function makes it possible to maintain a predetermined ion density by operating the ion generator 58 with the minimum power.

The specific operation of FIG. 22 will be described for reference. When the room is sufficiently filled with negative ions and a predetermined time has passed, the fine particles floating in the air of the room are also negatively charged by the negative ions. After that, by giving the ion control mat 48 a positive potential to the ground this time, the negatively charged fine particles are quickly attracted by the positive potential ion control mat 48 and absorbed and disappear, and the entire room is like a dust collector. The operation becomes smooth and the room is cleaned. By repeating this, the room can be kept clean. If the surface of the ion control mat 48 has high resistance conductivity, the effect is further improved.

The ion control object 50 in FIG. 22 is a reference example that performs the same operation as the ion control mat 48. It is small in size and has a structure that can be easily mounted on a table 56 or the like, and mainly controls absorption and repulsion on a wall surface or the like rather than a floor surface. Although not shown, it may be in the form of a conductive blind, a conductive mesh structure, for example, through which air can pass. Since the structure through which air passes easily captures charged particles, the dust collecting function becomes more effective if the installation location is set to the air passing portion.

The ion control sheet of FIG. 22 is a reference example when applied to the human body.
For example, it can be installed on a bed 55 or the like and used when a person sleeps. As a result, the electric potential on the surface of the human body with respect to the ground can be controlled. For example, immediately after operation, not only negative ions but also many negatively charged particles are present, so the ion control sheet should be set to a negative potential with respect to the ground, and the surface lying on it that is not in contact with the sheet of the human body should be set to a negative potential. Therefore, the negatively charged particles can be repelled without being absorbed by the human body unnecessarily. When the negatively charged particles disappear to some extent, the negative ions can be absorbed by the human body by setting the sheet to a positive potential.

FIGS. 23 to 26 are descriptions of the above-mentioned means for giving a stable potential to the ion control sheet and the like.
FIG. 23 is an explanation in which a negative power source is taken as an example of a power source that gives an electric potential to the earth for FIG. 22. A circuit composed of a diode 63 is connected to an AC power supply 12, and a negative peak value of -141V is obtained as an output voltage in a half wave. In this circuit, regardless of whether the ground 14 is grounded to the AC power supply 12, the waveform of the output potential does not always change in half waves as shown in A and B in the figure and is the same. Even with an outlet whose polarity cannot be selected, a negative potential power supply that can be obtained without any difference in performance can be obtained. When obtaining a positive electrode, the polarity of the diode 63 is reversed.

FIG. 24 shows a shifted sine by inserting a capacitor 62 between the voltage dividing resistor 22 at the AC midpoint, which is output to the half-wave negative potential of FIG. 24 independently of the ground side of the AC power supply 12. The wave shape is an increase in the negative region. In this circuit as well, a negative potential can be obtained without changing the output regardless of the polarity of the ground 14 of the AC power supply 12 by operating the ground changeover switch 61. When obtaining a positive electrode, the polarity of the diode 63 is reversed.

FIG. 25 is an unfavorable example. This is an example in which a high-voltage circuit of Cockcroft Walton is configured in two stages by a diode 63 and a capacitor 62. When the ground changeover switch 61 is operated to the A or B side, the output voltage of the AC power supply 12 is as shown in the figure. The result depends on the grounding polarity. Such an example is not preferable because the power supply has a voltage different depending on the user.

FIG. 26 is an example of solving this problem. An AC midpoint is obtained from the output of FIG. 25 and the voltage dividing resistor 22, and a capacitor 62 is inserted between the midpoint and the output of FIG. 25. As a result, the voltage of the voltage dividing terminal is superimposed. As a result, even if the grounding changeover switch 61 is operated to the A or B side, the output voltage becomes the same as the output potential as shown in the figure. Note that this example is the case of the capacity of the capacitor 62 used in the experiment, and the capacity of the capacitor 62 may be appropriately selected. When obtaining a positive electrode, the polarity of the diode 63 is reversed. The number of stages of the Cockcroft-Walton circuit is two in this example, but it is arbitrary.

1 Cylindrical electrode 2 Needle electrode 3 High voltage generator 4 Cartridge 5 A electrode 6 B electrode 7 Fan 8 Case 9 DC power supply 10 Input air 11 Output air 12 AC power supply 13 Transformer 14 Grounding 15 Condenser 16 Diode 17 Discharge resistance 18 Positive charge 19 Negative charge 20 2P outlet 21 3P outlet 22 Voltage division resistance 23 AC midpoint potential (quasi-ground potential)
24 Filter 25 Outlet 26 Separation angle α
27 Mesh-shaped counter electrode 28 Rotating cleaning plate 29 Cleaning spring 30 Motor 31 Ease mechanism 32 Back electrode 33 Changeover switch 34 Equipotential line 35 Electrolinear back electrode 36 Small diameter hole 37 Insulation plate 38 Branch pipe negative pressure part 39 Main pipe 40 Branch pipe opening Part 41 Insulated pipe 42 Insulated block 43 Discharge pipe 44 Main flow bundle 45 Negative pressure flow bundle 46 Ion detector 47 Judgment part 48 Ion control mat 49 Ion control sheet 50 Ion control object 51 Positive power supply 52 Negative power supply 53 Quasi-ground potential 54 Power supply changeover switch 55 Bed 56 Table 57 Floor surface 58 Ion generator 59 Negative ion or negatively charged particles 60 Sheet electrode 61 Grounding changeover switch 62 Condenser 63 Diode

Claims (7)

With a fan for blowing ,
With the first needle electrode of negative potential provided immediately after the fan ,
A second needle electrode having a negative potential, which is provided behind the first needle electrode and at a position separated from the first needle electrode,
Features and to Louis on generator by comprising a cylindrical electrode to be lower negative potential than said second needle electrodes is provided behind the second needle electrodes. With a fan for blowing ,
A first needle electrode negative potential provided immediately after the fan,
A second needle electrode having a negative potential, which is provided behind the first needle electrode and at a position separated from the first needle electrode,
The second provided behind the second needle electrodes so as to face the needle electrode the second and the mesh-like counter electrode serving as the lower negative potential than the needle electrodes, to a characterized by including Louis On generator. With a fan for blowing ,
The needle electrode provided immediately after the fan and
It has a rotary cleaning plate that rotates coaxially with the fan and comes into contact with the tip of the needle electrode to clean the tip of the needle electrode.
It said rotary cleaning plate is normally an ion generator, characterized in that it is fixed in a position Imachi avoid such influence the discharge of said needle electrode. With a fan for blowing ,
A needle electrode distal end of the needle to the rear of the outer edge of the fan is disposed to face the rotation center side of the fan,
Anda back electrode provided so as to face the opposite end of the tip of the needle electrode,
The potential of the back electrode, a negative potential, the ion generator, wherein Rukoto is controlled to one of a ground potential, the AC potential and a positive potential. With a fan for blowing,
The main pipe that allows the air sent from the fan to flow,
A discharge pipe for discharging the air Shi name a shape larger than the main tube is connected to the main pipe to the outside,
Anda branch pipe negative pressure that the needle electrode is provided on the inside is connected to the discharge pipe,
Wherein by controlling the flow of air from the main pipe, the needle tip of the pressure needle electrodes is changed, the ion generator, wherein the generation amount of ions is controlled. An ion detector air sent from the fan is to detect the occurrence of placement by ions immediately before the discharge port is discharged to the outside,
It has a determination unit connected to the ion detector and
The determination unit, when the generation amount of the predetermined ion by the ion detector is not detected, according to claims 1, characterized in that a warning to prompt the cleaning of the electrode to any one of claims 5 ion generator. A sheet electrode that controls the absorption and repulsion of outside Installation of examples on the body,
It has a power source that gives an electric potential to the sheet electrode , and has
The power supply has a circuit for generating a positive or negative direct current voltage using an AC power of a commercial, capacitor between the AC power source AC midpoint obtained by voltage dividing resistors and an output terminal is provided ion generator according to any one of claims 1 to 6, characterized in that are.