JP4857142B2 - Air ion concentration measuring device cleaning device - Google Patents

Description

The present invention relates to an apparatus for measuring the concentration of charged gas molecules and fine ions existing in the air, and the concentration of ions caused by the ions staying in the measuring apparatus and adhering to the electrodes. The present invention relates to a cleaning device for an air ion concentration measuring device which is intended to prevent a measurement failure or an insulation failure phenomenon of an insulating portion by an air ion concentration measurement cleaning control unit.

As an example of this type of conventional technique, there is a configuration example of an air ion concentration measuring device A shown in FIG.
To describe this, reference numeral 1 denotes a first electrode member as a measurement electrode made up of a measurement cylinder or a solid electrode bar, which is arranged and fixed in a direction substantially perpendicular to the center of the air ion concentration measuring device A. That is, the upper end 1 a and the lower end 1 b of the first electrode member 1 are fixed to the outer case (outer cylinder) 3 by the support bars 2 and 4. In the outer region around the first electrode member 1, a second electrode member 5 composed of a high voltage cylinder to which a high voltage is applied is disposed. At this time, the first electrode member 1 is arranged in the longitudinal direction at a substantially central portion of the second electrode member 5. The second electrode member 5 is fitted into the through hole by substantially disc-like support substrates 6 and 7 having a through hole having a diameter substantially the same as the outer diameter of the second electrode member 5 at a substantially central portion. The upper side and the lower side are fixed to the outer case 3.
Thus, as shown in FIG. 10, if the air B flows from the opening of the air ion concentration measuring device A and a predetermined voltage, for example, a voltage of about 200 to 1000 (V) is applied from the power supply device 8, Positive and negative charged particles (ions) are collected on the first electrode member 1 and the second electrode member 5. The collected positive and negative charged particles (ions) 9 and 10 are measured as current values, converted into voltage values by a current / voltage conversion circuit 11 as ion concentration measuring means, and air ion concentration is detected. To do.
In the figure, 12 is a signal control line, and 13 is a voltage line.

As another example of the conventional technology, there is a technology disclosed in Japanese Patent Application Laid-Open No. 2003-194777, for example.
Describing this, FIG. 11 shows a schematic configuration diagram of the air ion concentration measuring device C. The air ion concentration measuring device C is a positive charge collector that is charged by collision of positive ions in the air. A negative ion that is charged when negative ions in the air collide with a positive ion detector 16 comprising a plate 14 and repulsive electrode plates 15, 15 disposed opposite to the positive charge collecting plate 14. One measuring path through which air is passed through the negative charge detection plate 17 and the negative ion detector 19 composed of the repulsive electrode plates 18, 18 arranged opposite to the negative charge collector 17. A ventilation portion comprising an electric fan for taking in air containing ions into the air introduction tube 20 on the side opposite to the air suction port, with the insulating layer 21 interposed therebetween in the air introduction tube 20. A is provided 22. Then, a measurement calculation means (not shown) for detecting and calculating the charges of the charged charge collector plates 14 and 17 is grounded to eliminate the charges of the charged charge collector plates 14 and 17. A neutralizing means (not shown) such as a switch is provided. Further, as shown in FIG. 7, a positive ion detector 16 composed of a positive charge collector plate 14 and repulsive electrode plates 15 and 15, and a negative ion composed of a negative charge collector plate 17 and repellent electrode plates 18 and 18. The ion detector 19 is arranged by stacking up and down with an insulating layer 21 in between. Then, by driving the ventilation member 22, air containing positive ions and negative ions is introduced from the air suction port into the air introduction tube 20, and the positive ions introduced into the positive ion detector 16 are positive. When it is charged and approaches the repulsive electrode plates 15, 15, it rebounds, collides with the charge collector plate 14, and is collected. Negative ions are attracted to the repulsive electrode plates 18 and 18 and neutralized. The positive ions introduced into the negative ion detector 19 are positively charged and rebound when they approach the repulsive electrode plates 18, 18 and collide with the charge collector plate 17, and are collected. 18 and 18 are attracted and neutralized. The charges on the charge collecting plates 14 and 17 charged by the collision of positive ions and negative ions are converted into an ion voltage detection amplifier (not shown) and a noise detection amplifier (not shown) via a high resistance in the measurement calculation means. In order to subtract periodic and standing noise components from this measured value, it is converted into a digital signal by passing it through an analog-digital conversion circuit (not shown). .
Japanese Patent Laid-Open No. 2003-194777

Since the conventional technique has the above-described configuration, the following problems existed.
According to the conventional configuration shown in FIG. 10 described above, if a predetermined voltage is applied between the first electrode member 1 and the second electrode member 5 by the power supply device 8, the surface of the first electrode member 1 and the Charged particles (ions) are captured and attached to the inner peripheral surface of the second electrode member 5 and the like. If this takes a long time, it accumulates and stays on the surface of the first electrode member described above. On the other hand, air B flows from the opening of the air ion concentration measuring device A, and as ionized air, as shown in FIG. 12, ionized air B1 and B2 are the inner wall surface 3a of the outer case (outer cylinder) 3, It flows between the first electrode member 1 and the second electrode member 5 through the upper surface 6 a of the disc-like support substrate 6 and the outer surface of the second electrode member 5. Then, as shown in FIG. 12, charged particles (ions) stay on and accumulate on the upper surface 6a of the substantially disc-like support substrate 6. This is a fine particle (charged particle) adhering substance D, which not only induces an insulation failure phenomenon of the substantially disk-shaped support substrate 6, but also charged particles (deposited, retained or remaining on the surface of the first electrode member 1). There is a problem that the ion concentration measurement failure phenomenon of the air ion concentration measuring device A is caused due to the so-called deposit D as a lump of ions. In order to solve this, it is necessary to work such as disassembling the air ion concentration measuring device A, and to periodically remove these deposits D manually by using another cleaning device, The number of man-hours increased significantly, and there was a detrimental effect that the cleaning work did not go all the way. In addition, according to the conventional technique, the signal introduced from the current / voltage conversion circuit has a wave height distribution creating means for creating a wave height distribution map based on the difference value between the positive and negative wave peak values and automatically. There is a problem that the air ion concentration measuring and cleaning control unit for cleaning the inside of the air ion concentration measuring device is not provided, and the inside of the air ion concentration measuring device cannot be rationally cleaned.

Also in the conventional technique disclosed in Japanese Patent Application Laid-Open No. 2003-194777 shown in FIG. 11 described above, the air ion measuring device C is not added with an ion cleaning device or an ion cleaning function, and the Deposit D containing charged particles (ions) as prime elements on the inner wall surface of the air introduction tube 20 of the air ion measuring device C, the positive or negative charge collecting plates 14 and 17 and the repulsive electrode plates 15, 15, 18 and 18. The theory of depositing and remaining is the same as that of the example of the prior art shown in FIG. 10, and similar problems remain.
The problem to be solved by the present invention is to solve the problems described in the background art.

The present invention includes, for example, an outer case (outer cylinder) that is entirely formed of a substantially cylindrical body, a second electrode member that is housed in the outer case (outer cylinder) and is configured of a substantially cylindrical body, It is a substantially central portion in the two-electrode member, and is composed of a first electrode member arranged vertically in the length direction, and a predetermined high voltage is applied between the first electrode member and the second electrode member. Measurement of air ion concentration in a device that measures the concentration of charged particles (ions) that are applied and floated and collected on the surface of the first electrode member or the inner peripheral surface of the second electrode member A wave height distribution creating means for detecting a positive peak value and a negative peak value from the signal from the means and creating a distribution map based on the difference value (peak peak value), and cleaning of air ions with the signal from the pulse height creating means Central control means (CPU) for determining / commanding necessity and control from the central control means By applying a reverse bias voltage from the high voltage generating means for applying voltages of opposite polarity between the first electrode member and the second electrode member by a signal, it said without residual-depositing the charged particles (ions), etc. The charged particles (ions) are released from the surface of the first electrode member and the inner peripheral surface of the second electrode member, or the charged particles (ions) are on the upper surface of the support substrate for closing that supports the second electrode member. Without remaining and depositing, for example, a desired position of a space (space) portion between the outer case (outer cylinder) and the second electrode member in the upper and lower opening portions of the air ion concentration measuring device. An air inflow prevention member is interposed at a position adjacent to the closing support substrate, and these deposits are automatically cleaned by preventing charged particles (ions) from remaining on the upper surface of the closing support substrate. You It is a technology that prevents various phenomena such as poor ion concentration measurement and insulation failure of air ion concentration measuring instrument, and the difference between positive and negative peak values from the measurement data, that is, the difference between the peak and valley of the waveform ( (Peak peak value) is detected, the time to automatically clean charged particles (ions) is determined from the distribution map, and the measurement impossible state is detected from the distribution map of the difference values in the positive and negative wave height values. The purpose is to control a high-voltage device of opposite polarity and avoid damage to the device that measures the air ion concentration, and consists of the following configuration and means.

That is, according to the first aspect of the present invention, the second electrode member formed of a cylindrical body, and the first electrode member disposed at a substantially central portion of the cylindrical body along the length direction of the cylindrical body, An outer case for housing the first electrode member and the second electrode member, an air ion concentration measuring means for detecting an air ion concentration by a signal from between the first and second electrode members, the second electrode member, A closing support substrate interposed between the outer cases and fixing the second electrode member and the outer case, and an air inflow fixed to the inner peripheral surface of the outer case at a position adjacent to the closing support substrate An air composed of a prevention member and high voltage generating means for applying a voltage of opposite polarity between the first electrode member and the second electrode member after a predetermined time has elapsed since the voltage was applied to the first and second electrode members. In the cleaning device of the ion concentration measuring device, the air inflow prevention member is the outer casing. Forming an outer surface for securing to scan an inner surface formed inside the inner peripheral surface vital formed in the cavity of the air inflow preventing member, and a cone-shaped overhang portion which is formed continuous with the inner side surface, the air The signal from the ion concentration measuring means detects a positive peak value and a negative peak value, and performs a data processing on the difference value (peak peak value), and a signal distribution from the pulse height data processing means. a pulse height distribution generation means for generating, by a signal from the pulse-height distribution generating means becomes out with central control means for determining and instructing the cleaning necessity of air ions (CPU), the high voltage generating means from said central control means A voltage of opposite polarity is applied between the first electrode member and the second electrode member by a control signal.

According to the invention of claim 2, wherein, in the cleaning device of the air ion concentration measuring device according to claim 1 Symbol mounting, the central control unit of the air ion concentration measuring instrument cleaning apparatus created by the pulse height distribution creation means It is determined that the air ion concentration cannot be measured due to the high humidity of the inflowing air from the wave height distribution diagram, and the high voltage generating means is controlled by this command signal.

According to the invention of claim 3, wherein, in the cleaning device of the air ion concentration measuring device according to claim 1 Symbol mounting, the central control unit of the air ion concentration measuring instrument cleaning apparatus created by the pulse height distribution creation means When the inflowing air changes from high humidity to low humidity in the wave height distribution diagram, it is determined that the air ion concentration can be measured, and the air dryer is controlled by this command signal.

Since the air ion concentration measuring device cleaning apparatus according to the present invention has the above-described configuration, the following effects can be obtained.

That is, according to the first aspect of the present invention, the second electrode member formed of a cylindrical body, and the first electrode member disposed at a substantially central portion of the cylindrical body along the length direction of the cylindrical body, An outer case for housing the first electrode member and the second electrode member, an air ion concentration measuring means for detecting an air ion concentration by a signal from between the first and second electrode members, the second electrode member, A closing support substrate interposed between the outer cases and fixing the second electrode member and the outer case, and an air inflow fixed to the inner peripheral surface of the outer case at a position adjacent to the closing support substrate An air composed of a prevention member and high voltage generating means for applying a voltage of opposite polarity between the first electrode member and the second electrode member after a predetermined time has elapsed since the voltage was applied to the first and second electrode members. In the cleaning device of the ion concentration measuring device, the air inflow prevention member is the outer casing. Forming an outer surface for securing to scan an inner surface formed inside the inner peripheral surface vital formed in the cavity of the air inflow preventing member, and a cone-shaped overhang portion which is formed continuous with the inner side surface, the air The signal from the ion concentration measuring means detects a positive peak value and a negative peak value, and performs a data processing on the difference value (peak peak value), and a signal distribution from the pulse height data processing means. a pulse height distribution generation means for generating, by a signal from the pulse-height distribution generating means becomes out with central control means for determining and instructing the cleaning necessity of air ions (CPU), the high voltage generating means from said central control means A cleaning device for an air ion concentration measuring device is provided, wherein a voltage of opposite polarity is applied between the first electrode member and the second electrode member by a control signal.
Due to such a configuration, the applied voltage having the opposite polarity can be applied to the surface of the first electrode member, the inner peripheral surface of the second electrode member, and the like, which are attached and fixed as a lump of charged particles (ions) without manual operation. The air ion concentration measuring instrument can be cleaned easily and quickly without requiring any man-hours for cleaning, and the air ion concentration measuring instrument can be efficiently cleaned to further improve the accuracy of measurement data and wave height distribution maps. the improved to ensure that and the insulating measurement of air ion concentration can be always performed, and prevent leakage of high voltage, with an insulation failure phenomena of the measuring failure and insulating portions of the air ion concentration measuring device can be prevented The air ion concentration measurement data is provided with a pulse height data processing means for processing the difference between the positive and negative peak values, so that the measurement data of the air ions is made more accurate and the reference voltage of the measurement data The accurately, its distribution diagram can be detected with high cleaning necessity reliable stabilized, prevents insulation failure phenomena of the measuring failure and insulating portions of the air ion concentration measuring instrument at a reasonable means, over a long period of time This has the effect of ensuring a more stable measurement function.

According to a second aspect of the present invention, the central control means of the cleaning device of the air ion concentration measuring device determines that the air ion concentration cannot be measured due to the high humidity of the inflowing air based on the wave height distribution map created by the wave height distribution creating means. 2. The air ion concentration measuring device cleaning apparatus according to claim 1, wherein the high voltage generating means is controlled by the command signal.
With such a configuration, in addition to the effect of the first aspect of the invention, when the inflowing air is at a high humidity such as on a rainy day, the dielectric constant changes due to the humidity in the air and a high voltage leak or the like The measurement data becomes defective but the measurement of the air ion concentration is judged to be impossible, and the air ion concentration measuring device is not damaged by the high voltage leak, and the damage of the air ion concentration measuring device is reduced. is there.

According to the invention of claim 3, when the central control means of the cleaning device of the air ion concentration measuring device changes from high humidity to low humidity of the inflowing air in the wave height distribution map created by the wave height distribution creating means, It is determined that the ion concentration can be measured, and the air dryer is controlled by this command signal. The cleaning apparatus for an air ion concentration measuring device according to claim 1 is provided.
With such a configuration, in addition to the effect of the invention described in claim 1, moisture and water vapor remain in the air ion concentration measuring device even when the humidity in the inflowing air is reduced, thereby stabilizing the air ion concentration. When the humidity of the incoming air changes from a state where air ion concentration cannot be measured to a state where air ion concentration can be measured, the air ion concentration meter The effect of stabilizing the measurement of the air ion concentration by preventing the surface leakage of the high-voltage voltage by allowing dry air to flow in by the air dryer attached to the air inlet and drying the measured part of the air ion concentration meter There is.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an air ion concentration measuring device cleaning apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a system diagram showing a configuration of an embodiment of a cleaning apparatus for an air ion concentration measuring device according to the present invention, and is a vertical sectional view of the air ion concentration measuring device.

First, in describing the configuration of the embodiment of the cleaning device for an air ion concentration measuring device according to the present invention, the basic configuration of the cleaning device for the air ion concentration measuring device will be described with reference to FIG.
E is a cleaning apparatus for an air ion concentration measuring device according to the present invention, and an example thereof is shown. The cleaning device E of the air ion concentration measuring device includes an air ion concentration measuring device main body, and generally irradiates radiation such as cosmic ray α rays, short wavelength electromagnetic waves such as ultraviolet rays and X rays, corona discharge, or the like. Alternatively, charged particles (ions) generated by an electrostatic phenomenon such as corona discharge are collected on the electrode member of the air ion concentration measuring device E, and converted into the number of particles and measured as a current value. The current value is measured by converting it into a voltage signal and converting it to a charged particle (ion) concentration.

The charged particles (ions) described above are so-called atmospheric ions, which are divided into large ions and small ions. The small ions are ions generated by ionizing atmospheric components or radiation from radioactive substances or cosmic rays. And a relatively stable state is maintained. When the diameter of this small ion is about 1 (nm) and near the surface of a clean atmosphere, the number of positive and negative ions is about 5-6 × 10 ⁸ / m ³ , in crowded urban areas and highly polluted areas, 100-1000 × 10 ⁸ pieces / m ³ .

Large ions, on the other hand, are generated by small ions colliding with or adhering to neutral aerosol particles made of suspended particles other than atmospheric components such as dust and artificial chemicals. The large ions are generated simultaneously with the disappearance of the small ions.
Thus, the aerosol concentration and the small ion concentration are inversely proportional to each other, and the aerosol is a pollutant other than the air generation component, and it is necessary to measure the concentration of small ions in order to monitor the air pollution state. In the air ion concentration measuring device E according to the cleaning device E, the main body has a role of detecting a small ion concentration as charged particles. And the cleaning apparatus E of the air ion concentration measuring device according to the present invention is basically a so-called air ion concentration measuring device body that measures the concentration of charged particles (ions) using, for example, a double concentric cylinder. It is constructed based on the theory of Gerdien method.
Here, the air ion concentration measuring device according to the present invention can measure not only small ions but also large ions, medium ions, and small ions. Each ion is divided into a high voltage value applied between the first and second electrode members 23 and 26, a distance between the first and second electrode members 23 and 26, or the first and second electrode members 23, 26, for example, if the wind speed of the inflowing air B flowing between the first and second electrode members 23, 26 is constant, the first, second electrode members 23, The time to reach 26 is different. That is, large ions arrive quickly (short time) and small ions arrive slowly (long time). Therefore, in order to measure the air ion concentration in small ions, the design specifications are such that the lengths of the first and second electrode members 23 and 26 are relatively long.
Thus, the air ion concentration measuring device according to the present invention adjusts the applied high voltage value, the distance between the first and second electrode members 23 and 26, and the length of the first and second electrode members 23 and 26 as appropriate. Each air ion concentration of ions, medium ions or small ions is measured.

Hereinafter, the basic structure of the cleaning apparatus E of the air ion concentration measuring device according to the present invention will be described in detail.
Reference numeral 23 denotes a first electrode member as a measurement electrode having various shapes such as a measurement tube and a solid electrode bar, and has a function as an ion collection electrode. The air ion concentration measuring device main body is arranged and fixed substantially in the center vertical direction. That is, the upper end 23 a and the lower end 23 b of the first electrode member 23 are fixed to the outer case (outer cylinder) 25 by the support bars 24 and 24. In the outer region around the first electrode member 23, a second electrode member 26 that is configured by a high-pressure cylinder or the like to which a high voltage is applied and has a function as an ion collection electrode is disposed. The second electrode member 26 is also substantially the same shape as the outer case (outer cylinder) 25. For example, the second electrode member 26 is constituted by a cylindrical body, but may have other shapes. At this time, the first electrode member 23 is disposed in the longitudinal direction at a substantially central portion of the second electrode member 26. Further, the second electrode member 26 has a through hole 27a, 28a having substantially the same diameter as the outer diameter of the second electrode member 26 at a substantially central portion, for example, by means of a closing support substrate 27, 28 having a substantially disk shape. The upper case and the lower side are fixed to the outer case 25 while being fixed after being inserted into the through holes 27a and 28a. This fixing method is performed using an adhesive or the like, and the diameter length of the through holes 27a and 28a may be set slightly shorter than the outer diameter length of the second electrode member 26 and may be press-fitted and fixed. Further, the closing support substrates 27 and 28 may be formed of a different material from the outer case (outer cylinder) 25 and the second electrode member 26 and may be integrally formed therewith. Can be reduced.

Thus, as shown in FIG. 2, the inflowing air B flows from the inlet opening Ea of the air ion concentration measuring device main body, and a predetermined voltage such as a DC voltage from the voltage power supply device 29 of the opposite polarity constituting the cleaning device, For example, when a voltage of about 1 to 30 (V) is applied, positive and negative charged particles (ions) 30 a and 30 b are collected on the first electrode member 23 and the second electrode member 26. The collected positive and negative charged particles (ions) 30a and 30b are measured as current values, converted into voltage values by a current / voltage conversion circuit 31 serving as ion concentration measuring means, and air ion concentration is detected. To do. Then, applying a voltage with the polarity opposite from said opposite polarity voltage power supply 29 after a predetermined time has elapsed.
In the figure, 32 is a signal control line connected to the current / voltage conversion circuit 31 as air ion concentration measuring means, and 33 is a voltage line connected to the opposite polarity voltage power supply device 29 as high voltage generating means. is there.

Next, the operation | movement is demonstrated based on FIG.2 and FIG.3 about the basic composition of the cleaning apparatus E of the air ion concentration measuring device based on this invention.
As described above, the inflow air B flows into the inside from the inlet opening Ea of the main body of the air ion concentration measuring device, and has a predetermined potential between the first electrode member 23 and the second electrode member 26, for example, as shown in FIG. Thus, if a negative (minus) potential is applied to the first electrode member 23 and a positive (plus) potential is applied to the second electrode member 26 by the voltage power supply device 29 of opposite polarity, the first electrode member Positively charged particles (positive ions) 30 a are charged on the surface 23 c of the negative electrode 23, and negatively charged particles (negative ions) 30 b are charged and attached to the inner peripheral surface 26 a of the second electrode member 26.

When a predetermined time elapses, the positive and negative charged particles 30a and 30b accumulate and stay on the surface 23c and the inner peripheral surface 26a of the first and second electrode members 23. This becomes a charged particle adhering substance, and the current / voltage conversion circuit 31 as the air ion concentration measuring means connected to the first electrode member 23 and the second electrode member 26 by the signal control line 32 induces a malfunction. The charged particles (ions) in the air that have flowed into the main body of the ion concentration measuring device cannot be measured accurately.

According to the apparatus of the present invention, in order to cope with this, after a predetermined time elapses, for example, by a separately installed timer or the like, the accumulation / stagnation state of charged particle deposits is detected and confirmed, as shown in FIG. When a positive potential is applied to the first electrode member 23 and a negative potential is applied to the second electrode member 26 by the voltage power supply device 29 having the opposite polarity, the first voltage is applied to the first electrode member 23, respectively. Positively charged particles (positive ions) 30a and negatively charged particles (negative ions) 30b charged on the surface 23c of the electrode member 23 and the inner peripheral surface 26a of the second electrode member 26 are repelled, respectively. The voltage power supply device 29 having the opposite polarity will function as an automatic cleaning device because it is detached from the electrode members 23 and 26 and falls in the cylinder of the second electrode member 26.

As described above, the air ion concentration measuring device including the main body of the air ion concentration measuring device and the cleaning device according to the present invention is more effective in the cleaning function of the adhering matter of air ions when it is vertically installed as shown in the figure. Demonstrate.
Thus, according to the basic configuration of the air ion concentration measuring device cleaning device E according to the present invention, it was possible to improve the measurement failure of the ion concentration and prevent the insulation failure of the main body of the air ion concentration measuring device.

Next, an embodiment of the air ion concentration measuring device cleaning apparatus according to the present invention will be described in detail with reference to FIG.

FIG. 1 is a system diagram showing a specific configuration of an embodiment of a cleaning apparatus E for an air ion concentration measuring device according to the present invention, and is a diagram showing a vertical section of the main body of the air ion concentration measuring device. is there.
The configuration showing the embodiment is particularly the configuration shown in FIGS. 2 and 3 showing the basic configuration of the cleaning device E of the air ion concentration measuring device according to the present invention described above. The point which provided 34 and the point which provided the air ion concentration measurement cleaning control part G etc. are the characteristics.

The air inflow prevention member 34 is configured, for example, in a substantially cylindrical shape so as to conform to the internal shape of the outer case (outer cylinder) 25, that is, the shape of the inner peripheral surface 25 a of the outer case (outer cylinder) 25. In the example shown in FIG. 1, a cylindrical outer side surface 34a, an inner side surface 34b that is hollow and has an inner peripheral surface, and a mortar-shaped ridge portion 34c that is formed continuously to the inner side surface 34b. And form. In other words, when the inner peripheral surface 25a of the outer case (outer cylinder) 25 is composed of four rectangular surfaces, the outer surface 34a is similarly four rectangular surfaces. The mortar-shaped ridge 34c is formed so as to protrude in the center direction of the main body of the air ion concentration measuring device, and the outer surface of the basin-shaped ridge portion 34c is formed so as to descend downward in the center direction. The second step surface (standing portion) 34c2 is formed. And this air inflow prevention member 34 is each arrange | positioned at the entrance opening Ea side of the cleaning apparatus E of the said air ion concentration measuring device, and the exit opening Eb side. However, it is not always necessary to arrange the air ion concentration measuring device on the outlet opening Eb side of the cleaning device E. The air inflow prevention member 34 is disposed in a space (space) S formed by the second electrode member 26 and the outer case (outer cylinder) 25. In particular, it is fixed to the inner peripheral surface 25a of the outer case (outer cylinder) 25 so that the inner side surface 34b of the air inflow preventing member 34 and the mortar-shaped ridge portion 34c cover the upper and lower ends of the second electrode member 26. To do.

The outer surface 34a of the air inflow prevention member 34 is fixed to the outer case (outer cylinder) 25 either by applying a strong adhesive to both or by screwing with screws or the like. For example, the surface may be formed with a convex portion or a concave portion, and the outer case (outer cylinder) 25 and the air inflow prevention member 34 may be integrally formed in a manufacturing process. When the air inflow prevention member 34 is fixed to the outer case (outer cylinder) 25, the vertical line of the second step surface 34 c 2 of the mortar-shaped ridge 34 c of the air inflow prevention member 34 is the same as that of the second electrode member 26. It is configured to coincide with the vertical line of the inner wall surface 26 a or to project at least the second step surface 34 c 2 in the center direction of the second electrode member 26.

In the figure, 35 is an air discharge fan arranged on the outlet opening Eb side of the cleaning device E of the air ion concentration measuring device, 36 is a fixing member made of a building frame or the like, and 37 is the ground. Further, the other components are substantially the same as those of the basic configuration shown in FIGS. 2 and 3, and the same numbers and the same reference numerals are given, and the description thereof is omitted.

Next, the configuration of FIG. 1 showing the embodiment of the cleaning apparatus E of the air ion concentration measuring device has a configuration in which the ion generating means F is arranged in the inlet opening Ea of the outer case (outer cylinder) 25. The ion generating means F includes, for example, an ion air flow nozzle 39, a nozzle tube 40, an ion generator 41, a filter 42, an air compressor 43, an air intake unit 44, and an air dryer 45, all of which are provided. There is nothing.

The ion wind feed nozzle 39 is a part of the inlet opening Ea of the main body of the air ion concentration measuring device, and is arranged with the nozzle 39a directed in the center and in the vertical direction. The ion wind nozzle 39 has a main body connected to a nozzle tube 40. On the other hand, the air intake unit 44 configured by a pipe or the like is connected to an air compressor (compressor) 43, and compresses air (gas) taken from the outside by the air compressor 43. The compressed air is dedusted by the filter 42 in the next stage, fine particles contained in the air are removed, and the compressed air is sent to the ion generator 41. In the ion generator 41, high-pressure ionized air (gas) is flowed to the ion wind flow nozzle 39 through the nozzle tube 40. In the ion wind nozzle 39, high-pressure air ionized toward the first and second electrode members 23 and 26 is ejected and forcedly fed. From this, the charged particles (ions) deposited and staying on the surfaces and inner peripheral surfaces of the first and second electrode members 23 and 26 are blown off while applying an electrostatic peeling force. The charged particles (ions) thus dropped are scattered outside the apparatus by driving the air discharge fan 35 from the outlet opening Eb. The air dryer 45 is operated when the humidity in the outer case (outer cylinder) 25 is increased by a signal from a central control circuit (CPU) of the air ion concentration measuring and cleaning control unit G, which will be described later, and functions to lower the humidity. To do.

The operation of the embodiment in the cleaning device E of the air ion concentration measuring device according to the present invention will be described with reference to FIG.
When a predetermined voltage such as a DC voltage, for example, a voltage of about 200 to 1000 (V) is applied by boosting from the power supply 50 of the present invention device, positive and negative charges are applied to the first electrode member 23 and the second electrode member 26. Particles (ions) 30a and 30b are collected. The collected positive and negative charged particles (ions) 30a and 30b are measured as current values, converted into voltage values by a current / voltage conversion circuit 31 serving as ion concentration measuring means, and air ion concentration is detected. To do. Then, applying a voltage with the polarity opposite from the high-voltage device 29A of the opposite polarity. Then, the air ion concentration measurement clean control unit G stores the difference value between the positive and negative peak values as data of the central control circuit (CPU) 47, detects the state of the air ion concentration measured portion, The temperature and humidity states of the air B are converted into a voltage by the sensor 52 and converted into a digital signal by the analog / digital converter 53 to detect the state. High voltage device 29A of opposite polarity connected to the power source 50 of the present invention device for controlling the measured portion, that is, the adhering portion of the charged particles 30a, 30b, etc. according to the state of the measured portion of the air ion concentration, the rotational speed control The circuit 51, the ion generator 41, and the air dryer 45 are driven to clean the inside of the measurement object, that is, the deposits such as the surfaces of the closing support substrates 27 and 28 and the air ion concentration measuring instrument. The measured data and the wave height distribution map are transmitted to a cellular phone line 48 including a PHS telephone line for wireless communication as long-distance data communication. The data is also transmitted to a telephone line, a fiber cable optical line, and a wired line 49 as a LAN line. When multiple ion concentration measuring instruments are used in parallel for the reliability of differential value data and for data supplementation during cleaning, they are placed separately to share data between ion concentration measuring devices. The difference value data is also sent to the data recording computer 61.

Here, the inflow air B is introduced from the inlet opening Ea of the main body of the air ion concentration measuring device, and then passes through the inner peripheral surface 25a of the outer case (outer cylinder) 25 to indicate the air indicated by the arrow B3. And it flows like the air shown by the arrow B4 and is sent into the second electrode member 26. That is, the air B3 and B4 are prevented from flowing into the space (space) S by the air inflow prevention member 34, and are always smoothly passed through the first step surface 34c1 and the second step surface 34c2 of the air inflow prevention member 34. A predetermined amount of air B flows smoothly on the surfaces and inner peripheral surfaces of the first and second electrode members 23 and 26 without leaking, and flows out from the outlet opening Eb by the air discharge fan 35.
Thus, the air B3 and B4 are the surfaces 27b of the closing support substrates 27 and 28 interposed between the second electrode member 26 and the space (space) S above and below the outer case (outer cylinder) 25, respectively. , 28b, etc., but explained in the prior art, charged particles (ions) are attached to the surfaces 27b, 28b of the closing support substrates 27, 28, the inner peripheral surface 26a of the second electrode member 26, etc. The kimono D does not occur and does not exist. Therefore, it is possible to ensure the insulation of the closing support substrates 27, 28, etc., so that the apparatus can always measure the air ion concentration normally and cause an insulation failure phenomenon. There is nothing.

Further, in the configuration shown in FIG. 1, a positive potential is applied to the first electrode member 23 and a negative potential is applied to the second electrode member 26 by the high voltage device 29A having the opposite polarity . Then, positive charged particles (positive ions) and negative charged particles (negative ions) charged on the surface 23c of the first electrode member 23 and the inner peripheral surface 26a of the second electrode member 26, respectively, by the applied voltage. Is repelled, disengages from the first and second electrode members 23 and 26, and falls within the cylindrical body of the second electrode member 26, so that the high-voltage device 29A having the opposite polarity functions as an automatic cleaning device. The measurement failure phenomenon of the air ion concentration by preventing the accumulation and retention of charged particles on the surface 23c and the inner peripheral surface 26a of the first and second electrode members 23 and 26 of the apparatus of the present invention. In which with the characteristic that the further prevent insulation failure phenomena on top to prevent.

Note that the outlet opening Eb is disposed downward as shown in FIG. 1, for example, by a tightening member 38 formed of a tightening band, string or the like on the main body or outer case (outer cylinder) 25 of the air ion concentration measuring instrument. The fixing member 36 is used for fixing and arranging. In this way, the charged particles (ions) separated from the first and second electrode members 23 and 26 can easily fall, and the inside of the first and second electrode members 23 and 26 can be always cleaned, and the air ion concentration can be reduced. It can be measured stably.

The air ion concentration measurement clean control unit G includes a central control circuit 47 as a central control means (CPU) as shown in FIG. 1, and the central control circuit 47 is constituted by a microcomputer, for example, and has an ion concentration. The current / voltage conversion circuit 31 as a measuring means converts the air ion concentration into a voltage value and a digital numerical value, receives a signal related to the air ion concentration as shown in FIG. 5A, and calculates / stores it. . The data processed by the central control circuit 47 is transmitted to a cellular phone line 48 including a PHS telephone line as wireless communication via a data processing computer. This data is further transmitted to a wired line 49 as a LAN line or a telephone line.

Therefore, the air ion concentration measuring and cleaning control unit G serves as an ion concentration detecting unit from the ion concentration measured portion such as the surfaces 27b and 28b of the closing support substrates 27 and 28 and the inner peripheral surface 26a of the second electrode member 26, for example. The characteristic of the voltage V (volt) of the charged particles and the like with respect to the time t (sec) shown in FIG. 5A detected by the current / voltage conversion circuit 31 of FIG. 5, that is, the signal waveform is enlarged as shown in FIG. The filter 46 connected to the output side of the current / voltage conversion circuit 31 has, for example, a low-pass filter function and removes the noise component of the waveform of FIG. 5B as shown in FIG. , Shape. This is to perform a smoothing process. The steps up to here are steps S1 and S2 from START in the flow of the air ion concentration measurement cleaning control unit G shown in FIG. Step S1 is a step of converting a current into a voltage. Step S2 is a step of removing noise by a filter. This shaped signal waveform is output to the central control circuit 47 as a central control means, signals from the negative peak value detection circuit 54 and the positive peak value detection circuit 56 connected to the output side of the filter 46, The central control circuit 47 detects the bottom voltage value (bottom value) and the peak voltage value (vertex value), and holds them by the bottom voltage value holding circuit 55 and the peak voltage value holding circuit 57 connected to the output side of the filter 46. Is done. The steps up to here are step S3 to step S6 in the flow of the air ion concentration measurement cleaning control unit G shown in FIG. Here, when the negative peak value (bottom voltage value) and the positive peak value (peak voltage value) of the waveform shown in FIG. 5C shaped in step S3 and step S5 cannot be detected, Return to the NO side until each can be detected. Step S6 is a step of holding the peak voltage value. Step S5 is a step of detecting a peak voltage value. Step S3 is a step of detecting a bottom voltage value. Step S4 is a step of holding the bottom voltage value. The peak voltage value is the peak value of the peak of the signal waveform, and the bottom voltage value is the lowest value of the valley of the signal waveform. Then, the previous data is compared with the current data, and if the current data is small, the next data is read, it is repeated, and a point that becomes larger than the previous data is found. The previous data at this time is the minimum data (bottom voltage value). Next, search for the maximum data, compare the previous data with the current data, read the next data if the current data is large, repeat this, find the point where the current data is less than the previous data. Since the previous data at this time is the maximum point, this is the maximum data (peak voltage value). The difference between the immediately preceding minimum data and maximum data is the difference value, and the peak value (peak peak value) of the valley at this time.

Reference numeral 58 denotes a differential amplifier circuit, which is a pulse height data processing means, which is connected to the output side of the peak voltage value holding circuit 57 and the bottom voltage value holding circuit 55, and has a negative signal waveform shown in FIG. The difference value between the peak value (bottom voltage value) and the positive peak value (peak voltage value) adjacent thereto is calculated and processed. As shown in FIG. 5C, the differential amplifier circuit 58 is a differential voltage between continuous bottom voltage values a, c, e, g, i and peak voltage values b, d, f, h, j based on, for example, a signal waveform. The values V1, V2, V3, V4, Vn... Are calculated and processed. Then, the analog signal is converted into a digital signal by the AD conversion circuit 59 connected to the output side of the differential amplifier circuit 58 and processed by a computer. The number of differential voltage values V1, V2, V3, V4, and Vn are calculated, calculated, and stored by the wave height distribution creating circuit 60 connected to the output side of the AD conversion circuit 59. FIG. A wave height distribution map is created as shown in FIG. The steps so far are steps S7 to S10 in the flow of the air ion concentration measuring and cleaning control unit G shown in FIG. Here, in step S10, the passage of the measurement time of the air ion concentration is measured and judged, and when the measurement is impossible, the process returns to the first step S1 and the apparatus is stopped until the measurement is possible or the high voltage of the opposite polarity The device 29A is operated so as not to apply a high voltage. Here, step S7 is a step in which the difference between the peak voltage value and the bottom voltage value is obtained and used as wave height data. Step S8 is a step of converting an analog signal into a digital signal. Step S9 is a step of resetting the peak voltage value, the bottom voltage value, and the central control circuit (CPU) 47. Step S10 is a step in which it is determined whether or not the air ion concentration detection measurable time in step S1 has elapsed.

The wave height distribution creating circuit 60 is a wave height distribution creating means, which is composed of, for example, a microcomputer and creates a wave height distribution chart in step S11 shown in FIG. 6 as described above. The wave height distribution creating circuit 60 introduces the output signal to the central control circuit 47 as central control means. The central control circuit 47 determines whether or not it is necessary to clean the adhering matter such as ions and charged particles in the air in the outer case (outer cylinder) 25, the site to be measured, and the like. The high-voltage device 29A having the opposite polarity as the high-voltage generating means that has received this command, when measured using an ion concentration measuring instrument for a long time as shown in FIG. Next to the lower right side of the voltage value of 25 (mV), another small peak waveform D1, that is, an accumulation of the number of charges such as charged particles is formed. This peak waveform D1 is a portion of defective data. Cleaning is performed before the peak waveform D1 becomes large. The experimental example shown in FIG. 8 shows the waveform at this time. In step S12, it is determined whether or not cleaning is necessary. In addition, when the humidity of the inflowing air B of the ion concentration measuring device becomes high and the ion concentration measurement part leaks a high voltage or in the rain, the wave height distribution map is also on the right in the normal state as shown in FIG. The right side of the falling partial waveform forms a large peak waveform D2 in a saturated state, that is, an accumulation of the number of charged particles and the like, and the air ion concentration becomes unmeasurable. In this state, it is determined in step 13 that measurement is impossible, and the high voltage device 29A having the opposite polarity lowers or stops the high voltage to prevent the air ion concentration measuring instrument of the present invention from being damaged. In step S14, the central control circuit 47 outputs a signal to operate the air dryer 45 to dry the inflowing air B and the part to be measured. Here, even when the humidity in the inflowing air drops, moisture and water vapor remain in the air ion concentration measuring device, so it is necessary to return to a state where it can be measured early, from a state where the air ion concentration cannot be measured stably. Yes, when the humidity of the inflowing air changes from the state in which the air ion concentration cannot be measured to the state in which the air ion concentration can be measured, dry air is caused to flow in by the air dryer attached to the air inlet of the air ion concentration measuring device. The part to be measured of the air ion concentration measuring device is dried to prevent the surface leakage of the high voltage and stabilize the measurement of the air ion concentration. If it is determined in step 15 that the humidity is reduced and normal, the process proceeds to step S18, the measurement timer is reset, and the next measurement of the air ion concentration, the measurement site, and the like is prepared.
The above process is repeated to clean the staying charged particles and air ion concentration. Further, if the state becomes measurable in step 13, in step S17, the wave height distribution map is normal and the data is sent to the data recording computer 61 and recorded. As shown in FIG. 7 (a), the waveform with the air ion concentration and the measurement site being cleaned in this way has the adjacent large mountain waveforms D1 and D2 as shown in FIGS. 7 (b) and (c). Will not. In the experimental example at this time, the waveform shown in FIG. 9 is obtained, and the air ion concentration measuring device always operates normally.

In addition, the power source 50 of the cleaning device E of the air ion concentration measuring device according to the present invention is connected between the first and second electrode members 23 and 26 by the high voltage device 29A having the function of a high voltage generator and having the opposite polarity. By applying a high voltage of about 700 (V) to about 2000 (V), for example, and applying a predetermined forward / reverse potential such as a DC voltage in response to a signal from the central control circuit 47, the first and Charged particles (ions) accumulated and retained on the surface 23c of the second electrode members 23, 26, the inner peripheral surface 26a, etc. are separated from the surfaces 23c, the inner peripheral surface 26a, etc. of the first and second electrode members 23, 26. .

Further, the air ion concentration measuring and cleaning control unit G is provided with a rotation speed control circuit 51 for increasing or decreasing the rotation speed of the air discharge fan 35, and the rotation speed control circuit 51 allows the first and second electrode members 23 and 26 to be controlled. Charged particles (ions) deposited and staying on the surface 23c, the inner peripheral surface 26a, etc. are forcibly discharged to the outside of the apparatus.

On the other hand, various sensors 52 such as a temperature sensor and a magnetic sensor, particularly a humidity sensor, are provided at predetermined locations on the outer case (outer cylinder) 25 and the main body of the air ion concentration measuring instrument. The data is transmitted to the analog / digital conversion circuit 53 and transmitted to the central control circuit 47 as environment data. The central control circuit 47 can transmit it to, for example, a global environment research center (not shown) or the like installed outside, and can be used for research on global environment conservation or earthquake prediction accompanying changes in air ion concentration.

Next, an embodiment of the cleaning apparatus for an air ion concentration measuring device according to the present invention will be described in detail.

The apparatus according to the present invention is not limited to the above-described air inflow prevention member 34 having the structure shown in FIG. Explaining this, the air inflow prevention member 34A includes a cylindrical outer side surface 34a, an inner side surface 34b having a hollow inside and a circumferential surface, and a mortar-like ridge portion formed continuously to the inner side surface 34b. 34c is the same as that of FIG. However, in the configuration example shown in FIG. 4, the outer surface of the mortar-shaped ridge portion 34 c forms a single inclined surface 34 c 3 that forms a downward slope in the center direction of the second electrode member 26 without forming an upright portion. The points are different. If comprised in this way, the outer surface of the bowl-shaped collar part 34c will become a flat shape, and the bowl-shaped collar part 34c itself will be simplified, productivity will improve and air B3 and B4 will flow more smoothly. Other configurations and operations are substantially the same as those shown in FIG. 1 described above, and a description thereof will be omitted.

FIG. 2 is a system diagram showing a specific configuration of an embodiment in a cleaning apparatus E for an air ion concentration measuring device according to the present invention, and is a diagram showing a vertical section of the main body of the air ion concentration measuring device. It is a vertical sectional view showing the basic composition in the cleaning device of the air ion concentration measuring device according to the present invention. FIG. 3 is a vertical sectional view showing a basic configuration in a cleaning device for an air ion concentration measuring device according to the present invention and showing a state in which a reverse voltage is applied from the case of FIG. 2. FIG. 3 is a partially cutaway vertical sectional view showing an embodiment of a basic configuration in a cleaning device for an air ion concentration measuring device according to the present invention. FIG. 4 is a waveform of a voltage (volt) of charged particles or the like with respect to time t (sec) by a filter in the air ion concentration measuring device cleaning apparatus according to the present invention, where (a) is a signal waveform diagram and (b) is ( (a) is an enlarged waveform diagram of a signal, and (c) is a waveform diagram showing a smoothing process and showing positive and negative peak values. It is a flowchart which shows operation | movement of the air ion concentration measurement cleaning control part G in the cleaning apparatus of the air ion concentration measuring device which concerns on this invention. It is the distribution map created by the wave height distribution creation circuit of the cleaning device of the air ion concentration measuring device according to the present invention, wherein (a) displays the number of charged particles etc. with respect to the voltage (mV) of the charged particles etc. immediately after cleaning. (B) is a characteristic diagram for displaying the number of charged particles, etc. with respect to the voltage (mV) of charged particles, etc., when it is necessary to clean. It is a characteristic view which displays the number of charged particles etc. with respect to voltage (mV) of charged particles etc. which shows a state when measurement is impossible. FIG. 6 is a characteristic diagram showing an example of an experiment before cleaning (before cleaning) in the cleaning apparatus of the air ion concentration measuring device according to the present invention, showing the number (number) of ion particles and the like with respect to an analog signal voltage value (mV). . FIG. 6 is a characteristic diagram showing an experimental example after cleaning (after cleaning) in the cleaning apparatus of the air ion concentration measuring device according to the present invention and showing the number (pieces) of ion particles and the like with respect to an analog signal voltage value (mV). . It is a vertical sectional view showing one example of an air ion concentration measuring device in the prior art. It is a vertical sectional view showing another example of an air ion concentration measuring device in the prior art. It is one example of the air ion concentration measuring device in the prior art, and is an enlarged vertical sectional view showing the flow state of ionized air.

23 first electrode member 23a first electrode member upper end 23b first electrode member lower end 23c surface of first electrode member 24 support bar 25 outer case (outer cylinder)
25a Inner peripheral surface 26 of outer case (outer cylinder) Second electrode member 26a Inner peripheral surface 27 of second electrode member Blocking support substrate 27a Closing support substrate through hole 27b Closing support substrate surface 28 Closing support substrate high voltage device of the voltage power supply 29A opposite polarity 28a surface 29 opposite polarities of the through-hole 28b closed supporting substrate of the closure supporting substrate (high-voltage generating means)
30a Positive charged particle 30b Negative charged particle 31 Current / voltage conversion circuit 32 Signal control line 33 Voltage line 34 Air inflow prevention member 34A Air inflow prevention member 34a Air inflow prevention member outer side surface 34b Air inflow prevention member inner side surface 34c Air inflow prevention member mortar-shaped ridge 34c1 Air inflow prevention member mortar-shaped ridge first step surface 34c2 Air inflow prevention member mortar-shaped ridge second step surface (standing portion)
34c3 Air inflow prevention member Single slope 35 of bowl-shaped saddle 35 Air discharge fan 36 Fixing member 37 Ground 38 Tightening member 39 Ion air flow nozzle 39a Ion air flow nozzle nozzle port 40 Nozzle tube 41 Ion generator 42 Filter 43 Air Compressor
44 Air intake section 45 Air dryer 46 Filter 47 Central control circuit (central control means)
48 Cellular phone line 49 Wired line 50 Power supply 51 of the present invention device Rotational speed control circuit 52 Various sensors (humidity sensors)
53 Analog / digital conversion circuit 54 Negative peak value detection circuit 55 Bottom voltage value holding circuit 56 Positive peak value detection circuit 57 Peak voltage value holding circuit 58 Differential amplifier circuit (Peak data processing means)
59 AD conversion circuit 60 Wave height distribution creation circuit (wave height distribution creation means)
61 Data recording computer B Inlet air B1 Ionized air B2 Ionized air B3 Air B4 Air C Air ion concentration measuring device D Charged particle (ion) deposit E Cleaning device for air ion concentration measuring device Ea Inlet of main body of air ion concentration measuring device Opening Eb Outlet opening F of the main body of the air ion concentration measuring device F Ion generating means G Air ion concentration measuring and cleaning control unit

Claims (3)

A second electrode member formed of a cylindrical body, a first electrode member disposed at a substantially central portion of the cylindrical body along a length direction of the cylindrical body, and the first electrode member and the second electrode member. An outer case to be accommodated; an air ion concentration measuring means for detecting an air ion concentration by a signal from between the first and second electrode members; and the second electrode interposed between the second electrode member and the outer case A closing support substrate for fixing the member and the outer case, an air inflow prevention member fixed to the inner peripheral surface of the outer case at a position adjacent to the closing support substrate, and the first and second electrode members In a cleaning apparatus for an air ion concentration measuring instrument comprising high voltage generating means for applying a voltage of opposite polarity between the first electrode member and the second electrode member after a predetermined time has elapsed since the voltage was applied to The air inflow prevention member includes an outer surface fixed to the outer case and the air inflow prevention. An inner surface formed internally in the life-and-death formed cavity peripheral surface of the wood to form a cone-shaped overhang portion which is formed continuous with the inner side, signals a positive peak value from the air ion concentration measuring means And a wave height data processing means for detecting a negative wave height value and processing the difference value (peak peak value), a wave height distribution creating means for creating a distribution map with a signal from the wave height data processing means, and the wave height distribution creating And a central control means (CPU) for determining and instructing whether or not air ions need to be cleaned by a signal from the means , and the high voltage generating means receives the first electrode member and the second electrode by a control signal from the central control means A cleaning device for an air ion concentration measuring device, wherein a voltage of opposite polarity is applied between members. The central control means of the cleaning device of the air ion concentration measuring device determines that the air ion concentration cannot be measured due to the high humidity of the inflowing air from the wave height distribution map created by the wave height distribution creating means, and the high voltage generating means is determined by this command signal. The apparatus for cleaning an air ion concentration measuring device according to claim 1, wherein: When the central control means of the cleaning device of the air ion concentration measuring device changes from high humidity to low humidity of the incoming air in the wave height distribution map created by the wave height distribution creating means, it is determined that the air ion concentration can be measured, and this command 2. The apparatus for cleaning an air ion concentration measuring device according to claim 1, wherein the air dryer is controlled by a signal.

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