JP2004234972A - Air blow type ion generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air blow type ion generating device capable of stably discharging air ion generated by corona discharge for a long period. <P>SOLUTION: The air blow type ion generating device comprises a discharging needle 15 connected to a high voltage power source 17 and an opposing electrode 14 opposing the discharging needle 15, and is provided with an ion generating means 9 generating air ion by the corona discharge generated between the discharging needle 15 and the opposing electrode 14, an air blowing means 8, and a cleaning means 10 for the discharging needle, to transfer the air ion generated at the ion generating means 9 by the air blown from the air blowing means 8. The cleaning means 10 is composed of a movable member 20 moving with force of wind having a fin part 19 exposed to the air flow from the air blowing means 8, and a brush member 21 mounted on the movable member 20 so as to touch a tip part of the discharging needle 15. A stopper member 24 stopping the movement of the movable member 20 by engaging with the movable member 20 is arranged at the movable member 20 in free engagement and disengagement. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air-blowing ion generator that generates positive and negative air ions by corona discharge and transfers the positive and negative air ions by airflow generated by a fan.
[0002]
[Prior art]
Conventionally, in order to neutralize static electricity accumulated in a charged body and eliminate static electricity, a blast type ion that generates positively or negatively charged air ions and transports the air ions toward the charged body by an air current. A generation device is known (for example, see Patent Document 1).
[0003]
This type of blown ion generator includes a discharge needle connected to a high-voltage power supply, a counter electrode provided to face the discharge needle, and a fan for generating an airflow. The ion generator applies a high voltage to the discharge needle by a high-voltage power supply to generate a corona discharge between the discharge needle and the counter electrode, thereby generating positive or negatively charged air ions. Releases into the atmosphere.
[0004]
In the above-mentioned blast-type ion generator, in order to generate a corona discharge by applying a high voltage to the discharge needle, it is necessary to concentrate an electric field on the tip of the discharge needle. However, such concentration of the electric field causes dust in the air to be drawn to the tip of the discharge needle. Therefore, when the blower type ion generator is operated for a long time, dust adheres to the tip of the discharge needle and the generation of corona discharge is hindered, and the number of air ions generated by the corona discharge decreases, resulting in static elimination. The charge elimination time of the target charged body becomes longer.
[0005]
As described above, when the static elimination time is long, that is, when the static elimination performance is deteriorated, the conventional ventilation type ion generator needs to clean the discharge needle in order to restore the static elimination performance. For this reason, there is an inconvenience that the user has to manually and periodically remove dust attached to the tip of the discharge needle using a brush or a skewer.
[0006]
[Patent Document 1]
JP 2000-133413 A (Page 4, FIG. 7)
[0007]
[Problems to be solved by the invention]
An object of the present invention is to provide an air-blowing ion generator capable of solving such a disadvantage and stably releasing air ions generated by corona discharge for a long time.
[0008]
[Means for Solving the Problems]
The present invention has been made to achieve the above object, and has a discharge needle connected to a high-voltage power supply and a counter electrode facing the discharge needle, and a corona between the discharge needle and the counter electrode. The present invention relates to an improvement in an air-blowing ion generating apparatus including an ion generating means for generating air ions by electric discharge, and a blowing means, and transporting the air ions generated by the ion generating means on a blowing airflow from the blowing means.
[0009]
In order to achieve the above object, the present inventors have conducted various studies. As a result, the inventors of the present application have found that dust adhering to the discharge needles is easily mechanically removed in the initial stage of operation, but the dust covers the tip of the discharge needles after a long time from the start of operation. It was found that it would be difficult to remove it.
[0010]
Therefore, a first aspect of the present invention includes a discharge needle cleaning means, the cleaning means comprising: a movable member which is moved by wind power and has a fin portion to which the airflow from the air blowing means is applied; and a tip of the discharge needle. And a brush member attached to the movable member so as to touch the portion.
[0011]
According to the first aspect of the present invention, when the airflow is generated by the blowing means, the fin portion receives the airflow and the movable member operates. Then, the brush member attached to the movable member touches the tip of the discharge needle, and dust attached to the tip of the discharge needle is removed. Therefore, a corona discharge is stably generated between the discharge needle and the counter electrode for a long time, and air ions generated by the corona discharge can be transferred to a charged body to be neutralized. Further, since the cleaning means is operated by the wind generated from the blowing means, it is not necessary to separately provide a device for driving the cleaning means, thereby preventing the overall configuration of the apparatus from being complicated and reducing the manufacturing cost. Can be.
[0012]
By the way, in the first aspect of the present invention, since the wind power is used, the cleaning means is always operated during the blowing, and there is a possibility that the sending of the air ions is adversely affected. In this case, if a stopper member that engages with the movable member and stops the operation of the movable member is provided so as to be freely detachable from the movable member, the stopper member is always engaged with the movable member to stop the operation. Advantageously, the stopper can be detached from the movable member only when necessary, and the movable member can be operated by wind power to clean the discharge needle.
[0013]
According to a second aspect of the present invention, there is provided a cleaning means for a discharge needle, the cleaning means comprising: a movable member operated by an electric motor; and a brush attached to the movable member so as to touch a tip of the discharge needle. And a member.
[0014]
Also in the second aspect of the present invention, when the movable member operates, the brush member attached to the movable member touches the tip of the discharge needle, and dust attached to the tip of the discharge needle is removed. Further, since the cleaning means is operated by the electric motor, it operates more strongly than the wind power. For this reason, in the second aspect of the present invention, a relatively hard material such as metal can be used as the brush member. When the brush member is made of metal, when the tip of the brush member approaches the tip of the discharge needle, the state of corona discharge changes, and the state shifts to spark discharge. Then, the dust attached to the tip of the discharge needle is scattered by the spark discharge, so that the dust can be reliably removed.
[0015]
Here, the following two forms are conceivable as shapes and layouts of the counter electrode and the discharge needle. That is, in the first embodiment, the counter electrode is formed in a ring shape, and a plurality of discharge needles are radially arranged at intervals in the circumferential direction of the counter electrode. In the second embodiment, the counter electrode is formed in a straight line. And a plurality of discharge needles are juxtaposed at intervals in the longitudinal direction of the counter electrode.
[0016]
In the first embodiment, the center of a circle formed by connecting the tips of a plurality of discharge needles (the arrangement circle of the tips of the discharge needles) coincides with the annular center of the counter electrode. In this case, the movable member is constituted by a rotating member rotatable around an axis concentric with the annular center of the counter electrode, and the rotating member has a distance from the annular center of the counter electrode to the tip of each discharge needle. If at least one brush member is attached at the corresponding radial position, the brush member rotates along the circle at which the discharge needle tip is disposed. Therefore, when the rotating member rotates, the brush member comes into contact with the tips of the plurality of discharge needles one after another, and dust attached to the tips of the discharge needles is removed.
[0017]
In the case of adopting the second embodiment, the movable member is constituted by a shaft member, and a plurality of the brush members are attached to the shaft member in accordance with an arrangement pitch of a plurality of discharge needles. According to this, by the rotation of the shaft member, each brush member comes into contact with the corresponding tip of each discharge needle, and dust attached to the tip of the discharge needle is removed.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an external view of an air-blowing ion generator according to a first embodiment, FIG. 2 is a diagram showing the inside of the apparatus of FIG. 1, and FIGS. 3 to 5 are explanatory sectional views of the apparatus of FIG. It is. 6 is a configuration diagram of a test device for the device of FIG. 1, FIGS. 7 and 8 are diagrams showing test results, and FIG. 9 is a model diagram of a discharge needle. FIG. 10 is an external view of an air-blowing ion generating apparatus according to a second embodiment of the present invention, FIG. 11 is a diagram showing the inside of the apparatus of FIG. 10, and FIG. It is sectional drawing. FIG. 13 is an explanatory sectional view of the third embodiment, and FIG. 14 is an explanatory sectional view of another embodiment.
[0019]
Referring to FIGS. 1 to 4, the air-blowing ion generating apparatus 1 of the first embodiment includes a case 4 having an air ion air blowing port 2 on the front surface and an air suction port 3 on the rear surface.
A louver 5 and a power switch 6 are provided on the front surface of the case 4 to cover the air vent 2, and a filter set 7 is provided on the rear surface of the case 4 to cover the air intake port 3.
[0020]
In the case 4, a blowing unit 8, an ion generating unit 9, and a cleaning unit 10 are arranged in this order from the rear. The air blower 8 includes a cylindrical shroud 11 connected to the air inlet 3 and a fan 12 housed in the shroud 11 and driven by a motor (not shown). Blow air toward it.
[0021]
The ion generating means 9 is provided with an annular counter electrode 14 attached to the outer periphery of an air ion guide cylinder 13 made of an insulator connected to the front of the shroud 11, and a space in the air ion guide cylinder 13 in the circumferential direction of the counter electrode 14. And eight discharge needles 15 radially arranged with a gap. These discharge needles 15 are implanted in a rod-shaped electrode holder 16 made of an insulator disposed at the center in the air ion guide cylinder 13. Then, an output cable 17a of an AC high-voltage power supply 17 disposed at the inner bottom of the case 4 is connected to the discharge needle 15 via a conductor 18 embedded in the electrode holder 16, and a return cable 17b of the high-voltage power supply 17 is connected to the counter electrode 14 To generate corona discharge between the discharge needle 15 and the counter electrode 14 to generate positive and negative air ions.
[0022]
The cleaning means 10 includes a rod-shaped rotating member 20 having a fin portion 19 to which the blowing airflow from the blowing means 8 is applied and rotating by wind power, and a brush member 21 attached to the rotating member 20 via the fin portion 19. Have.
[0023]
The rotation member 20 is supported by a support portion 22 provided at the center in the longitudinal direction in front of the electrode holder 16, and is configured to be rotatable around an axis concentric with the annular center of the counter electrode 14.
[0024]
The brush member 21 is made of, for example, a plastic such as nylon resin or acrylic resin, and is mounted on the rotating member 20 at a radial position corresponding to a distance from the annular center of the counter electrode 14 to the tip of each discharge needle 15. It is attached via a member 23 and touches the tip of the discharge needle 15 by the rotation of the rotating member 20.
[0025]
The two fin portions 19 provided at both ends of the rotating member 20 are formed in, for example, a rectangular plate shape, and each plate surface has a traveling direction (see FIG. 5) of the airflow from the blowing means 8 as shown in FIG. 5 (in the direction of arrow A in FIG. 5). Therefore, when the fin portion 19 receives the airflow, the cleaning means 10 rotates in a plane perpendicular to the airflow (moves in the direction of arrow B in FIG. 5).
[0026]
Referring again to FIG. 4, in order to operate the cleaning means 10 only when necessary, the blower-type ion generating device 1 has a pin-shaped stopper member 24 and an electromagnetic source which is a driving source for moving the stopper member 24 forward and backward. A plunger 25 and a control device (not shown) having a timer and supplying a command signal for moving the stopper member 24 back and forth to the electromagnetic plunger 25 are provided.
[0027]
When the energization of the electromagnetic coil in the electromagnetic plunger 25 is interrupted, the stopper member 24 advances to the side where the electromagnetic plunger 25 protrudes (the left side in FIG. 4) by the urging force of the spring in the electromagnetic plunger 25. At this time, the stopper member 24 engages with the rotating member 20 of the cleaning means 10 to prevent the cleaning means 10 from rotating.
[0028]
On the other hand, when the electromagnetic coil is energized, the stopper member 24 retreats toward the electromagnetic plunger 25 (the right side in FIG. 4) against the urging force of the spring. At this time, since the stopper member 24 is detached from the cleaning means 10, the cleaning means 10 can freely rotate by the airflow from the blowing means 8.
[0029]
Next, the operation of the blower ion generator 1 will be described. In the initial state of the operation, the stopper member 24 shown in FIG. 4 moves forward (moves to the left in FIG. 4), and the stopper member 24 engages with the rotating member 20 to prevent the cleaning unit 10 from rotating. When a high voltage is applied to each of the discharge needles 15 from the high-voltage power supply 17 via the output cable 17a, a high-voltage electric field is applied between the counter electrode 14 connected to the return cable 17b of the high-voltage power supply 17 and the discharge needles 15. Is formed. Then, an electric field is concentrated on the tip of the discharge needle 15 to generate corona discharge, and positive or negative air ions are generated.
[0030]
The blowing means 8 generates an air flow, and the generated air flow transfers air ions generated by the corona discharge to a charged body located a predetermined distance away from the blowing ion generator 1. Therefore, the blower-type ion generator 1 can supply the positive and negative air ions to neutralize and remove the static electricity of the charged body.
[0031]
When the timer measures a predetermined time (for example, 24 hours), the electromagnetic plunger 25 moves the stopper member 24 backward (moves to the right in FIG. 4) in response to a command from a control device (not shown). At this time, the stopper member 24 is detached from the rotating member 20, and the cleaning means 10 becomes rotatable. Then, the fin portion 19 of the rotating member 20 receives the airflow from the blowing means 8 to rotate the rotating member 20, and the tip of the brush member 21 attached to the rotating member 20 contacts the tip of the discharge needle 15, and the discharge needle The dust adhering to the tip of No. 15 is removed.
[0032]
After a predetermined time (for example, 10 seconds) measured by the timer, the electromagnetic plunger 25 advances the stopper member 24 and engages the rotating member 20 in response to a command from a control device (not shown). At this time, the rotation of the rotating member 20 is stopped, and the operation of the cleaning unit 10 stops. Hereinafter, the electromagnetic plunger 25 repeatedly moves the stopper member 24 forward and backward at predetermined time intervals. Therefore, the discharge needle 15 can be cleaned at predetermined time intervals.
[0033]
Next, the effect of the cleaning means 10 of the blown ion generator 1 of the present embodiment will be described. The charging plate monitor 26 shown in FIG. 6 is a test device for measuring the performance of the blown ion generator 1. The charging plate monitor 26 includes a 150 mm square metal plate 29 (charging body) attached to the main body 28 via an insulating member 27. The charging plate monitor 26 includes a surface potential measuring device 30 for measuring the potential of the metal plate 29, a high voltage power supply 31 for applying a charge to the metal plate 29, and a potential of the metal plate 29. And a timer 32 for measuring the decay time of the data.
[0034]
The present inventors use the charging plate monitor 26 to operate the cleaning unit 10 once a day for 10 seconds (Example 1) and to not operate the cleaning unit 10 at all (Comparative Example 1). Was subjected to the following first test. That is, in Example 1 and Comparative Example 1, the metal plate 29 was arranged at a distance of 300 mm from the discharge needle 15 of the blast ion generator 1, and a predetermined AC voltage was supplied by the high-voltage power supply 17. Was applied to the discharge needle 15 to measure the offset voltage when positive and negative air ions were generated by corona discharge. The offset voltage is the absolute value of the voltage of the metal plate 29. Since the absolute value of the voltage of the metal plate 29 increases when the amount of positive and negative air ions emitted from the blower type ion generator 1 is biased, the smaller the absolute value of the voltage is, the better the ion balance is. It can be said that Therefore, the offset voltage is an index of the ion balance. The metal plate 29 simulates a charged body to be neutralized.
[0035]
In the first test for measuring the offset voltage, the result when the cleaning means 10 is not operated (Comparative Example 1) is shown in FIG. 7A, and the result when the cleaning means 10 is operated (Example 1) is shown. This is shown in FIG. 7A and 7B, the horizontal axis represents the operation time [h] of the blower ion generator 1, and the vertical axis represents the offset voltage [V]. As shown in FIGS. 7A and 7B, the offset voltage indicating the ion balance does not change so much even over a long period of time, and is in the range of −5 V to +5 V throughout. It can be seen that driving the cleaning means 10 has almost no effect.
[0036]
Next, referring to FIG. 6 again, the present inventors operate the cleaning unit 10 of the blower type ion generator 1 once a day for 10 seconds (Example 2), and activate the cleaning unit 10. The following second test was performed for the case where the test was not performed (Comparative Example 2). That is, in Example 2 and Comparative Example 2, first, the metal plate 29 was charged to 1000 V (or -1000 V) by the high-voltage power supply 31. Then, a predetermined AC voltage is applied to the discharge needle 15 by the high-voltage power supply 17 to generate positive and negative air ions by corona discharge, and air ions are supplied to the metal plate 29 from the blow ion generator 1 to neutralize the metal plate 29. did. At this time, the time required for the voltage of the metal plate 29 measured by the surface potential measuring device 30 of the charging plate monitor 26 to decrease from 1000 V (or -1000 V) to 100 V (or -100 V) (hereinafter, decay time) ) Was measured by the timer 32.
[0037]
In the second test for measuring the decay time, the results when the cleaning means 10 is not operated (Comparative Example 2) are shown in FIG. 8A, and the results when the cleaning means 10 is operated (Example 2) are shown. This is shown in FIG. 8 (a) and 8 (b), the horizontal axis represents the operation time [h] of the blower type ion generator 1, and the vertical axis represents the decay time [sec]. The solid line shows the case where the metal plate 29 is charged to + 1000V, and the broken line shows the case where the metal plate 29 is charged to -1000V.
[0038]
As shown in FIG. 8A, when the cleaning means 10 is not operated, the decay time increases when 600 hours have elapsed since the start of operation, when the decay time changes over time. FIG. 9 shows the result of observing the tip of the discharge needle 15 in this state. As shown in FIG. 9, crystalline dust (dirt) 33 was attached to the tip of the discharge needle 15. The dust 33 can be easily removed by manually cleaning it with a ready-made brush, and when the operation is continued thereafter, the decay time returns to a substantially initial state as shown in FIG. When the operation was further continued, the decay time increased again around the operation time of 1100 hours, and again when the tip of the discharge needle 15 was cleaned using a brush, the decay time was restored.
[0039]
On the other hand, as shown in FIG. 8B, when the cleaning means 10 is operated once a day for 10 seconds (Example 2), the decay time hardly increases with the elapse of the operation time. That is, when the cleaning means 10 is operated, dust at the tip of the discharge needle 15 is effectively removed, and the static elimination ability of the air-blowing ion generator 1 does not decline even over a long operation time of over 1000 hours. Therefore, according to the present embodiment, air ions generated by corona discharge can be stably released for a long time.
[0040]
In the first embodiment, the rotating member 20 that constitutes the cleaning unit 10 has a rod shape. However, the rotating member 20 may have a plate shape, a cross shape, a radial shape, a disk shape, or the like. It may be arranged on the rotating member 20 without the fin portion 19 interposed therebetween. Further, at least one fin portion 19 and at least one brush member 21 are sufficient. Further, the disposition position of the cleaning means 10 may be between the blowing means 8 and the ion generation means 9.
[0041]
Next, a second embodiment will be described. Referring to FIGS. 10 to 12, the blower type ion generator 1a of the second embodiment includes a case 44 having a horizontally long air ion blower port 42 on the front face and an air suction port 43 on the rear face. . In the case 44, a blowing unit 48, an ion generating unit 49 and a cleaning unit 50 in front of the blowing unit 48 are arranged. The blower means 48 extends from the lower part of the shroud 51 toward the cleaning means 50, from a cylindrical shroud 51 connected to the air suction port 43, a fan 52 housed in the shroud 51, and driven by a motor (not shown). And an air flow guide 53, and blows air from the air inlet 43 toward the air ion blower 42.
[0042]
The ion generating means 49 includes a straight counter electrode 54 parallel to the air ion blowing port 42, and six discharge needles 55 arranged in parallel at intervals in the longitudinal direction of the counter electrode 54. Two counter electrodes 54 are arranged slightly inside the air ion blower port 42 and vertically in parallel with the air ion blower port 42. Further, the discharge needle 55 is implanted in a rod-shaped electrode holder 56 made of an insulator arranged in parallel with the air ion blow port 42 so that the tip thereof faces the ion blow port 42. A high-voltage power supply (not shown) is connected between the discharge needle 55 and the counter electrode 54 to generate corona discharge between the discharge needle 55 and the counter electrode 54 to generate positive and negative air ions. ing.
[0043]
The cleaning means 50 is disposed in front of the discharge needle 55 (left in the figure) and behind the counter electrode 54 (right in the figure), as shown in a cross section in FIG. A rod-shaped shaft member 58 having a portion 57 and rotated by wind power is provided, and a brush member 59 attached to the shaft member 58.
[0044]
The shaft member 58 is disposed in parallel with the air ion blow port 42, is configured to be long in the longitudinal direction of the counter electrode 54, and rotatable around an axis parallel to the counter electrode 54.
[0045]
The brush members 59 are made of, for example, a plastic such as nylon resin or acrylic resin, and are provided in six pieces. The brush members 59 are attached to the shaft member 58 via the brush attachment members 60 in accordance with the arrangement pitch of the discharge needles 55. The tip of the corresponding discharge needle 55 is touched by the rotation of.
[0046]
The fin portion 57 is provided at one end of the shaft member 58, and is formed of four plates radially attached to the shaft member 58 so as to receive an airflow guided from the blowing means 48 via the airflow guide 53. .
[0047]
In the blower type ion generator 1 a of the present embodiment, the fin portion 57 of the cleaning means 50 receives the airflow generated by the blower 48, and the shaft member 58 rotates. Then, the tip of each brush member 59 provided on the shaft member 58 contacts the corresponding tip of the discharge needle 55, and removes dust attached to the tip of each discharge needle 55. Accordingly, the blower ion generator 1a can stably release air ions generated by corona discharge for a long time.
[0048]
Also in the blower type ion generator 1a of the second embodiment, the cleaning means 10 is operated only when necessary, so that the rotation of the shaft member 58 is prevented by engaging with the plate of the fin portion 57 or the like. It is desirable to provide a stopper member.
[0049]
Further, in the ventilation type ion generator of the present invention, the cleaning means may be configured to be operated by a motor (electric motor). A ventilation type ion generator in this case will be described as a third embodiment. In the present embodiment, the cleaning means of the blower-type ion generator 1 of the first embodiment is driven by a motor, and the same components as those of the first embodiment are denoted by the same reference numerals. Is omitted.
[0050]
As shown in FIG. 13, the cleaning means 61 of the air-blowing ion generator 1b of the third embodiment includes a rod-shaped rotating member 20 similar to that of the first embodiment. However, since the rotating member 20 is rotated by the motor 62, the fin portion 19 is unnecessary and is not provided. On the other hand, the motor 62 is disposed in front of the electrode holder 16 with its rotation center aligned with the position of the support portion 22 shown in FIG. 3, and the rotation member 20 has its longitudinal center connected to the rotation shaft of the motor 62. Have been. The brush member 21 connected to the rotating member 20 via a brush attachment member 63 is disposed at a position where the brush member 21 contacts the discharge needle 15 when the rotating member 20 rotates, as in the first embodiment. . Since the rotating member 20 is rotated by the motor 62, the cleaning means 61 does not require the stopper member 24 or the like and is not provided.
[0051]
According to the present embodiment, the cleaning unit 61 is driven by the motor 62, and the brush member 21 can strongly scrape dust even when dust (dirt) attached to the discharge needle 15 is hardened. Dust can be easily removed. Note that the cleaning unit 50 of the second embodiment may be configured to be driven by a motor.
[0052]
In the first to third embodiments, the brush member of the cleaning means is described as being made of plastic such as nylon resin or acrylic resin. However, the brush member may be made of metal wire, for example. This is particularly effective in the case of the motor-driven cleaning unit of the third embodiment. In the case where the brush member is made of a conductive material as described above, when the tip of the brush member approaches the tip of the discharge needle generating corona discharge, the state of the corona discharge changes, and a transition to spark discharge occurs. . Then, the dust at the tip of the discharge needle is scattered by the spark discharge, so that the dust can be reliably removed. In order to generate a stronger spark discharge, for example, the structure shown in FIG. 13 of the third embodiment is improved as shown in FIG. 14, and the connecting portion connected to the rotating shaft of the rotating member 20 of the cleaning means 61 is connected. 64 may be grounded.
[Brief description of the drawings]
FIG. 1 is an external view of a blown ion generator according to a first embodiment.
FIG. 2 is a configuration diagram of the inside of a blown ion generator according to the first embodiment.
FIG. 3 is a sectional view taken along line III-III of FIG. 2;
FIG. 4 is a detailed view of a part of FIG. 3;
FIG. 5 is a view taken in the direction of arrows VV of a part of FIG. 4;
FIG. 6 is a configuration diagram of a test apparatus for the blown ion generator according to the first embodiment.
FIG. 7 is a diagram showing a change over time in ion balance characteristics.
FIG. 8 is a graph showing a change over time in a static elimination characteristic.
FIG. 9 is a model diagram showing contamination of a discharge needle.
FIG. 10 is an external view of a blown ion generator according to a second embodiment.
FIG. 11 is a diagram showing the inside of the apparatus shown in FIG. 10;
FIG. 12 is a view taken in the direction of arrows XII-XII in FIG. 11;
FIG. 13 is an explanatory sectional view of a blown ion generator according to a third embodiment.
FIG. 14 is an explanatory cross-sectional view of a blower type ion generator of another embodiment.
[Explanation of symbols]
1, 1a, 1b ... blowing-type ion generator, 8, 48 ... blowing means, 9, 49 ... ion generating means, 10, 50, 61 ... cleaning means, 14, 54 ... Counter electrode, 15, 55: discharge needle, 19, 57: fin portion, 20: rotating member, 21, 59: brush member, 24: stopper member, 25: electromagnetic plunger , 58 ... shaft member, 62 ... motor.

Claims (6)

It has a discharge needle connected to a high-voltage power supply and a counter electrode facing the discharge needle, and includes an ion generation unit that generates air ions by corona discharge between the discharge needle and the counter electrode, and a blowing unit, In a blast-type ion generator that transfers the air ions generated by the ion generation unit by blast airflow from the blast unit,
Cleaning means for the discharge needle, wherein the cleaning means is attached to the movable member moving by wind power having a fin portion to which the airflow from the air blowing means hits, and the movable member so as to touch the tip of the discharge needle. A blowing type ion generator, comprising: a brush member. The blower type ion generator according to claim 1, wherein a stopper member that engages with the movable member and stops the operation of the movable member is provided so as to be freely detachable from the movable member. It has a discharge needle connected to a high-voltage power supply and a counter electrode facing the discharge needle, and includes an ion generation unit that generates air ions by corona discharge between the discharge needle and the counter electrode, and a blowing unit, In a blast-type ion generator that transfers the air ions generated by the ion generation unit by blast airflow from the blast unit,
Cleaning means for the discharge needle, wherein the cleaning means comprises a movable member operated by an electric motor, and a brush member attached to the movable member so as to touch the tip of the discharge needle. Blast type ion generator. The blower type ion generator according to claim 3, wherein the brush member is made of metal. The counter electrode is formed in an annular shape, the discharge needles are radially arranged at intervals in the circumferential direction of the counter electrode,
The movable member is configured by a rotating member rotatable around an axis concentric with the annular center of the counter electrode,
The at least one brush member is attached to the rotating member at a radial position corresponding to a distance from an annular center of the counter electrode to a tip of each discharge needle. Item 5. An air-blowing ion generator according to any one of Items 4. The counter electrode is formed in a straight shape, a plurality of the discharge needles are arranged in parallel at intervals in the longitudinal direction of the counter electrode,
The movable member is formed of a shaft member that is long in the longitudinal direction of the counter electrode and is rotatable around an axis parallel to the counter electrode.
The blow type ion according to any one of claims 1 to 4, wherein a plurality of the brush members are attached to the shaft member in accordance with an arrangement pitch of a plurality of discharge needles. Generator.

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