JP2014007028A - Ion generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve ion emission efficiency while stably cleaning an electrode with a simple structure.SOLUTION: An ion generating device comprises: a blowing mechanism, an air duct which forms a flow passage through which a gas blown by the blowing mechanism flows and has an opening in a side wall; an electrode block 50 which includes an ion generating part having a discharge electrode and is detachably attached to the air duct; and a cleaning part which is provided in the air duct to clean the discharge electrode. In the state in which the electrode block 50 is attached to the air duct, the discharge electrode is positioned in the flow passage, and the opening is blocked by the electrode block 50. The discharge electrode is touched and rubbed by the cleaning part during the detachment of the electrode block 50.

Description

  The present invention relates to an ion generator, and more particularly to an ion generator that generates both positive ions and negative ions.

  Japanese Unexamined Patent Application Publication No. 2011-233301 (Patent Document 1) is a prior art document that discloses the configuration of an ion generator that can clean an electrode of an ion generator. In the ion generator described in Patent Document 1, the discharge electrode body has a needle-like tip. The cleaning unit is configured to be movable between a contact state that is in contact with the discharge electrode body and a non-contact state that is not in contact with the discharge electrode body in order to clean the discharge electrode body. The housing accommodates the discharge electrode body and the cleaning unit therein. The cleaning unit is configured to move between a contact state and a non-contact state by a driving force from the outside of the housing.

JP 2011-233301 A

  When the cleaning part for cleaning the electrode is arranged in the flow path which is the passage path of air, the flow of air in the flow path is disturbed by the cleaning part, and the ions generated in the ion generation part are on the wall part of the flow path. Since the amount of ions absorbed increases, there is room for improvement in the ion emission efficiency of the ion generator. Moreover, since the operation | movement of a cleaning part tends to become unstable if the structure of a cleaning part is complicated, there exists room for improvement in the surface of the operation | movement stability of a cleaning part.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an ion generator capable of stably cleaning an electrode with a simple configuration and improving ion emission efficiency.

  An ion generator according to the present invention comprises a blower mechanism, a flow path through which gas blown by the blower mechanism flows, includes a duct having an opening in a side wall, and an ion generator having a discharge electrode, and is detachable from the duct And an electrode block that is mounted on the duct, and a cleaning unit that is provided in the duct and cleans the discharge electrode. In a state where the electrode block is mounted on the duct, the discharge electrode is located in the flow path, and the opening is closed by the electrode block. The discharge electrode is rubbed in contact with the cleaning portion when the electrode block is attached or detached.

  In one embodiment of the present invention, the discharge electrode has a needle-like outer shape. In the electrode block, the axial direction of the discharge electrode intersects with the attachment / detachment direction of the electrode block with respect to the duct.

In one embodiment of the present invention, the electrode block includes an induction electrode facing the discharge electrode.
In one embodiment of the present invention, the induction electrode has a needle-like outer shape.

  In one form of the present invention, the electrode block has an accommodating portion for accommodating the cleaning portion therein in a state where the electrode block is attached to the duct.

In one form of this invention, the cleaning part contains a brush.
In one aspect of the present invention, the cleaning portion extends in a direction intersecting with the attachment / detachment direction of the electrode block with respect to the duct and intersects with the axial direction of the needle-like discharge electrode in the attached / detached electrode block. It extends to.

  In one form of this invention, a cleaning part contains a pair of rubber member which contacts a discharge electrode when a discharge electrode passes between each other.

In one embodiment of the present invention, the rubber member contains an abrasive.
In one form of the present invention, the duct includes a first duct and a second duct located adjacent to each other. A 1st duct comprises the 1st flow path which is the said flow path, and has a 1st opening in a side wall. A 2nd duct comprises the 2nd flow path which is the said flow path, and has a 2nd opening in a side wall. The ion generator includes a positive ion generator and a negative ion generator. The positive ion generator includes a first discharge electrode that is a discharge electrode and is applied with a positive voltage, and a first induction electrode that faces the first discharge electrode. The negative ion generation unit includes a second discharge electrode that is a discharge electrode and to which a negative voltage is applied, and a second induction electrode that faces the second discharge electrode.

  In one embodiment of the present invention, the first induction electrode and the second induction electrode are electrically connected to each other and have the same potential.

  In an embodiment of the present invention, the electrode block has a predetermined gap between the positive ion generation unit and the negative ion generation unit.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to clean an electrode stably with a simple structure, the discharge | release efficiency of ion can be improved.

It is sectional drawing which shows the structure of the ion generator which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the electrode block which concerns on the same embodiment. It is a perspective view which shows the state which mounts | wears with the electrode block which concerns on the same embodiment. It is a perspective view which shows the state which mounted | wore with the electrode block which concerns on the same embodiment. It is a circuit diagram which shows the structure of the power supply circuit contained in the ion generator which concerns on the same embodiment. It is a disassembled perspective view for demonstrating the structure of a brush. It is the elements on larger scale which show the state which the electrode and the brush contacted. It is a side view which shows the structure of the cleaning part of the ion generator which concerns on Embodiment 2 of this invention. It is a side view which shows the structure of the cleaning part of the ion generator which concerns on Embodiment 3 of this invention. It is the figure which looked at the cleaning part of FIG. 9 from the arrow X direction. It is a disassembled perspective view which shows the structure of the electrode block and cleaning part of the ion generator which concerns on Embodiment 4 of this invention. It is a figure which expands and shows the induction electrode and the cleaning part of the ion generator which concern on the embodiment. It is a perspective view which shows the structure of the ion generator which concerns on Embodiment 5 of this invention. It is sectional drawing seen from the XIV-XIV line arrow direction of FIG. It is sectional drawing seen from the XV-XV line arrow direction of FIG. It is a top view which shows the structure of the ion generator which concerns on a reference example. It is a top view which shows the structure of the ion generator which concerns on a comparative example. It is a top view which shows the structure of the ion generation part which concerns on a comparative example. It is the figure which looked at the ion generating part of FIG. 18 from arrow XIV. It is a graph which shows the density | concentration distribution of the positive ion measured in the position 250 mm away from the electrode above the 1st duct and the 2nd duct in the reference example. It is a graph which shows the density | concentration distribution of the positive ion measured in the position 1 m away from the electrode above the 1st duct and the 2nd duct in a reference example. It is a graph which shows the density | concentration distribution of the negative ion measured in the position 250 mm away from the electrode above the 1st duct and the 2nd duct in the reference example. It is a graph which shows the density | concentration distribution of the negative ion measured in the position 1 m away from the electrode above the 1st duct and the 2nd duct in a reference example. It is a graph which shows the density | concentration distribution of the positive ion measured in the position 250 mm away from the electrode above the duct in the comparative example. It is a graph which shows the density | concentration distribution of the positive ion measured in the position 1 m away from the electrode above the duct in the comparative example. It is a graph which shows the density | concentration distribution of the negative ion measured in the position 250 mm away from the electrode above the duct in the comparative example. It is a graph which shows the density | concentration distribution of the negative ion measured in the position 1 m away from the electrode above the duct in the comparative example.

  Hereinafter, an ion generator according to Embodiment 1 of the present invention will be described with reference to the drawings. In the following description of the embodiments, the same or corresponding parts in the drawings are denoted by the same reference numerals, and the description thereof will not be repeated.

(Embodiment 1)
FIG. 1 is a cross-sectional view showing a configuration of an ion generator according to Embodiment 1 of the present invention. As shown in FIG. 1, the ion generating apparatus 100 according to Embodiment 1 of the present invention has a substantially rectangular parallelepiped casing 110 composed of an upper casing 111 and a lower casing 112 that are combined with each other. The upper housing 111 and the lower housing 112 are engaged with each other by a snap fit member and are detachably combined.

  The upper housing 111 has two fitting holes in the upper part. The blowing cylinder 113 is detachably fitted in one of the two fitting holes. The blowing cylinder 114 is detachably fitted into the other fitting hole of the two fitting holes. The blowing cylinders 113 and 114 have a tapered outer shape in the longitudinal section.

  The upper end of the blow-out cylinder 113 is a blow-out opening 113a. A protective net 115 is arranged so as to cover the lower end of the blowing cylinder 113. The upper end of the blowout cylinder 114 is the blowout outlet 114a. A protective net 116 is arranged so as to cover the lower end of the blowing cylinder 114. The protective nets 115 and 116 are provided to prevent foreign objects such as fingers from being inserted from the outside.

  The lower housing 112 has two suction ports on the side. The impeller 40 is disposed in the lower housing 112 so as to face one of the two suction ports 112a. An impeller 41 is disposed in the lower housing 112 so as to face the other suction port 112b of the two suction ports.

  The impellers 40 and 41 are multiblade impellers having a plurality of blades whose rotational center side is displaced in the rotation direction with respect to the outer edge. In other words, the impellers 40 and 41 are cylindrical sirocco impellers. The impellers 40 and 41 have a bearing plate at one end. A shaft hole is provided in the center of the bearing plate. The output shaft of the motor 30 is attached to this shaft hole.

  The impellers 40 and 41 have through holes on the surfaces facing the suction ports 112a and 112b. The impellers 40 and 41 are configured so that a gas such as air sucked into the central cavity from the through hole is discharged from between the blades of the outer peripheral portion. The impellers 40 and 41 and the motor 30 constitute a blower mechanism.

  In order to allow the gas discharged from the impeller 40 and the gas discharged from the impeller 41 to flow separately, the ion generator 100 has two flow paths.

  The first flow path of the two flow paths is a flow path for the gas sucked from the suction port 112a and released from the impeller 40, and is constituted by the first duct 117. That is, the first duct 117 constitutes a first flow path through which a part of the gas blown by the blower mechanism flows.

  The upper part of the first duct 117 has a cylindrical outer shape that is rectangular in plan view and extends in the vertical direction. The lower portion of the first duct 117 has a cylindrical outer shape that is substantially circular in a side view and surrounds the periphery of the impeller 40 along the outer shape of the impeller 40.

  The first duct 117 has an opening at the upper end facing the lower end of the blowing cylinder 113. A protection net 115 is attached to the upper end of the first duct 117 so as to close the opening. The opening at the upper end of the first duct 117 is completely covered by the protective net 115.

  The second flow path of the two flow paths is a flow path for the gas sucked from the suction port 112 b and discharged from the impeller 41, and is constituted by the second duct 118. That is, the 2nd duct 118 comprises the 2nd flow path through which the remainder of the gas ventilated by the ventilation mechanism flows. The second duct 118 is located adjacent to the first duct 117.

  The upper part of the second duct 118 has a cylindrical outer shape that is rectangular in plan view and extends in the vertical direction. The lower part of the second duct 118 has a cylindrical outer shape that is substantially circular in a side view so as to surround the periphery of the impeller 41 along the outer shape of the impeller 41.

  The second duct 118 has an opening at the upper end facing the lower end of the blowing cylinder 114. A protection net 116 is attached to the upper end of the second duct 118 so as to close the opening. The opening at the upper end of the second duct 118 is completely covered by the protective net 116.

  The ion generator 100 includes an electrode block 50 that is detachably attached to the first duct 117 and the second duct 118. The electrode block 50 includes a positive ion generator 120 and a negative ion generator 130.

  The positive ion generator 120 includes a needle-shaped first discharge electrode 140 to which a positive voltage is applied and a needle-shaped first induction electrode 150 facing the first discharge electrode 140. The negative ion generator 130 has a needle-like second discharge electrode 170 to which a negative voltage is applied, and a needle-like second induction electrode 160 facing the second discharge electrode 170.

  FIG. 2 is a perspective view showing the configuration of the electrode block according to the present embodiment. FIG. 3 is a perspective view showing a state in which the electrode block according to this embodiment is mounted. FIG. 4 is a perspective view showing a state in which the electrode block according to this embodiment is mounted. 3 and 4, only a part of the first duct 117 and the second duct 118 is illustrated. Moreover, in FIG. 3, the brush which comprises the cleaning part mentioned later is not illustrated.

  As shown in FIGS. 2 to 4, the skeleton of the electrode block 50 is constituted by a frame body 51 of a resin molded product. A predetermined gap 52 is provided between the positive ion generator 120 and the negative ion generator 130.

  In the ion generator 100 according to the present embodiment, each of the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 includes a positive ion generation unit 120 and a negative ion generation unit 130. And a central axis extending in the direction in which the two are aligned.

  Specifically, the frame body 51 of the electrode block 50 according to the present embodiment extends in the direction in which the positive ion generation unit 120 and the negative ion generation unit 130 are aligned, and the positive ion generation unit 120 and the negative ion generation unit 130. And a main body 53 that connects the two. In addition, the frame body 51 includes a first bulging portion 54, a second bulging portion 55, and a second bulging portion bulging in a rectangular parallelepiped shape on one side in a direction orthogonal to the extending direction of the main body portion 53 from the main body portion 53. A third bulging portion 56 and a fourth bulging portion 57 are provided. Furthermore, the frame 51 has a gripping portion 58 that bulges in a rectangular parallelepiped shape on the other side in a direction orthogonal to the extending direction of the main body portion 53.

  The first discharge electrode 140 protrudes from the surface of the first bulge portion 54 facing the second bulge portion 55. The first induction electrode 150 protrudes from the surface of the second bulging portion 55 that faces the first bulging portion 54. The second induction electrode 160 protrudes from the surface of the third bulging portion 56 facing the fourth bulging portion 57. The second discharge electrode 170 protrudes from the surface of the fourth bulging portion 57 facing the third bulging portion 56.

  The first discharge electrode 140 is connected to a connector 190 provided on the grip portion 58 by being connected to a conductive wire routed in the first bulge portion 54 and the main body portion 53. The first induction electrode 150 is connected to a connector 190 provided on the grip portion 58 by being connected to a conductive wire routed in the second bulge portion 55 and the main body portion 53.

  The second induction electrode 160 is connected to a connector 190 provided on the grip portion 58 by being connected to a conductive wire routed in the third bulge portion 56 and the main body portion 53. The second discharge electrode 170 is connected to a connector 190 provided on the grip portion 58 by being connected to a conductive wire routed in the fourth bulge portion 57 and the main body portion 53.

  The first induction electrode 150 and the second induction electrode 160 are connected to a common conducting wire routed through the main body 53 and have the same potential.

  As shown in FIG. 1, the 1st duct 117 and the 2nd duct 118 are comprised from the same member. In the upper casing 111, a power circuit unit 11 and a control unit 12, which will be described later, are provided on the sides of the first duct 117 and the second duct 118.

  The control unit 12 includes a control board and a power supply unit (not shown). The power supply unit is connected to a commercial power supply and supplied with an alternating current. The power supply circuit unit 11 is connected to the electrode block 50, applies a positive voltage to the first discharge electrode 140, and applies a negative voltage to the second discharge electrode 170.

  When attaching / detaching the electrode block 50 to / from the first duct 117 and the second duct 118, the upper casing 111 is removed from the lower casing 112.

  As shown in FIG. 3, a first opening 117 a for attaching and detaching the electrode block 50 is provided on the upper side wall of the first duct 117. The upper side wall of the second duct 118 is provided with a second opening 118a extending so as to be continuous with the first opening 117a for attaching and detaching the electrode block 50.

  When the electrode block 50 is attached to the first duct 117 and the second duct 118, the electrode block 50 is moved in the direction indicated by the arrow 60 with respect to the first duct 117 and the second duct 118. At this time, the electrode block 50 is moved while holding the holding portion 58.

  As shown in FIG. 4, in a state where the electrode block 50 is mounted on the first duct 117 and the second duct 118, the positive ion generator 120 is inserted through the first opening 117a, and the first discharge electrode 140 and the first discharge electrode 140 The one induction electrode 150 is located away from each other at both ends in the cross section of the first flow path. Note that the first discharge electrode 140 and the first induction electrode 150 do not necessarily have to be located at both ends in the cross section of the first flow path, and need only be located at least within the first flow path.

  Further, the negative ion generator 130 is inserted into the second opening 118a, and the second discharge electrode 170 and the second induction electrode 160 are located apart from each other at both ends in the cross section of the second flow path. In addition, the first opening 117 a and the second opening are closed by the frame body 51 of the electrode block 50. Note that the second discharge electrode 170 and the second induction electrode 160 do not necessarily have to be positioned at both ends of the cross section of the second flow path, and may be positioned at least in the second flow path.

  Thus, by attaching the electrode block 50 to the first duct 117 and the second duct 118, the positive ion generation unit 120 and the negative ion generation unit 130 can be arranged in separate flow paths.

  The power supply circuit unit 11 is detachably connected to the control unit 12. That is, the power supply circuit unit 11 is detachably attached to the first duct 117 and the second duct 118. Specifically, each of the power supply circuit unit 11 and the control unit 12 has a terminal portion that is detachably engaged with each other.

  A power supply circuit is configured by connecting the electrode block 50, the power supply circuit unit 11, and the control unit 12 to each other. FIG. 5 is a circuit diagram showing a configuration of a power supply circuit included in the ion generator according to the present embodiment.

  As shown in FIG. 5, the power supply circuit unit 11 has a step-up transformer 17. The power supply circuit unit 11 includes a diode 13, a resistor 14, and a two-terminal thyristor 16 connected in series between one end of the primary side of the step-up transformer 17 and the power supply unit of the control unit 12. The other end of the primary side of the step-up transformer 17 is connected to the power supply unit of the control unit 12.

  A capacitor 15 is connected between the connection point of the resistor 14 and the two-terminal thyristor 16 and the other end on the primary side of the step-up transformer. A diode 18 and a diode 19 are connected in parallel to the secondary side of the step-up transformer 17. From the secondary side of the step-up transformer 17, a step-up AC voltage obtained by boosting the commercial AC voltage is output from the diode 18 and the diode 19.

  The cathode terminal of the diode 18 is connected to the first discharge electrode 140. As a result, the positive voltage of the step-up AC voltage output from the secondary side of the step-up transformer 17 is applied to the first discharge electrode 140.

  The anode terminal of the diode 19 is connected to the second discharge electrode 170. As a result, a negative voltage of the boosted AC voltage output from the secondary side of the boost transformer 17 is applied to the second discharge electrode 170.

  A voltage on the secondary side of the step-up transformer 17 is applied to both the first induction electrode 150 and the second induction electrode 160. When a high voltage is applied from the power supply unit of the control unit 12, corona discharge occurs between the first discharge electrode 140 and the first induction electrode 150, and positive ions are generated. Similarly, corona discharge occurs between the second induction electrode 160 and the second discharge electrode 170, and negative ions are generated.

  The potential differences between the first discharge electrode 140 and the first induction electrode 150 and between the second induction electrode 160 and the second discharge electrode 170 are preferably 3 kV or more and 10 kV or less. When the potential difference is smaller than 3 kV, corona discharge is difficult to occur and ions cannot be generated sufficiently. When the potential difference is greater than 10 kV, there is a high possibility that arc discharge will occur, and the ion generator 100 may fail.

  In the present embodiment, the first induction electrode 150 and the second induction electrode 160 are set to zero potential. Here, the zero potential is a potential obtained by grounding the first induction electrode 150 and the second induction electrode 160 or by electrically floating the first induction electrode 150 and the second induction electrode 160. And the vicinity of 0V.

  With the above configuration, the release of positive ions and the release of negative ions are performed alternately every half cycle of the boosted AC voltage. In the present embodiment, an AC power supply is used, but a DC power supply may be used.

  In the ion generator 100, by configuring the first flow path as described above, the gas sucked from the suction port 112a as shown by the arrow 10 in FIG. 1 is blown by the blowing mechanism as shown by the arrow 10a. Then, it rises in the first flow path, passes through the positive ion generator 120, and is blown out from the outlet 113a as indicated by the arrow 10b. As a result, positive ions generated between the first discharge electrode 140 and the first induction electrode 150 are released from the outlet 113a by a part of the gas blown by the blower mechanism.

  By configuring the second flow path as described above, the gas sucked from the suction port 112b as shown by the arrow 20 in FIG. 1 is blown by the blower mechanism as shown by the arrow 20a to be inside the second flow path. , Passes through the negative ion generator 130, and is blown out from the outlet 114a as indicated by the arrow 20b. As a result, negative ions generated between the second induction electrode 160 and the second discharge electrode 170 are released from the outlet 114a by the remaining portion of the gas blown by the blower mechanism.

  In the present embodiment, each of the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 has a needle shape. Compared to the case where the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 are formed in a needle shape, compared to the case where the electrode is formed in a plate shape or a ring shape, It is possible to concentrate the electric field on.

  Therefore, the distance between the first discharge electrode 140 and the first induction electrode 150 and the distance between the second induction electrode 160 and the second discharge electrode 170 are increased while suppressing an increase in the applied voltage necessary for the discharge. can do.

  When the distance between the first discharge electrode 140 and the first induction electrode 150 and the distance between the second induction electrode 160 and the second discharge electrode 170 are increased, the discharge electrode is compared with the case where these distances are small. Can be made difficult to be absorbed by the induction electrode. Specifically, since the distance between the discharge electrode and the induction electrode is large, the ions generated near the discharge electrode can be carried by the wind passing between the electrodes before being absorbed by the induction electrode. As a result, ions can be generated efficiently.

  In the present embodiment, each of the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 has a needle-like outer shape with a sharp tip. By doing so, electric field concentration is likely to occur between the electrodes, so that corona discharge can easily occur, and the applied voltage necessary for the generation of ions can be reduced.

  However, each of the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 does not necessarily have a sharp outer shape. For example, the diameter is 0.1 mm or more and 1 It may be 0.0 mm or less and may have a cylindrical outer shape with a flat tip, or a cylindrical outer shape with a rounded tip. Furthermore, each of the first discharge electrode 140, the first induction electrode 150, the second induction electrode 160, and the second discharge electrode 170 may be, for example, an electrode cut out in a needle shape from a thin metal plate having a thickness of 0.2 mm. Good.

  In addition, the distance between the first discharge electrode 140 and the first induction electrode 150 and the distance between the second induction electrode 160 and the second discharge electrode 170 are preferably 15 mm or more and 200 mm or less. As will be described later, the distance between the electrodes is particularly preferably 80 mm. Here, the inter-electrode distance is the distance between the tips of the electrodes facing each other.

  When the distance between the electrodes is less than 15 mm, arc discharge is likely to occur, and ozone gas may be generated at a high concentration. In addition, since the electrodes are located close to each other, the proportion of ions generated in the vicinity of the discharge electrode is increased by the induction electrode. That is, the ion generation efficiency decreases.

  If the distance between the electrodes is greater than 200 mm, corona discharge is not between the first discharge electrode 140 and the first induction electrode 150 or between the second induction electrode 160 and the second discharge electrode 170 but in the vicinity of the electrodes. This is likely to occur between another object existing in the electrode and the electrode. For example, corona discharge may occur between the inner wall of the frame 51 that exists near the first induction electrode 150 and the first discharge electrode 140, and ion generation efficiency may decrease.

  Further, the first discharge electrode 140 and the first induction electrode 150 are arranged at substantially the center in the direction orthogonal to the direction in which the positive ion generator 120 and the negative ion generator 130 are arranged in the transverse section of the first duct 117. By doing so, it can suppress that the generated positive ion is absorbed by the wall part of the 1st duct 117, and can improve the discharge | release efficiency of ion.

  Similarly, the second induction electrode 160 and the second discharge electrode 170 are approximately centered in the direction orthogonal to the direction in which the positive ion generator 120 and the negative ion generator 130 are arranged in the transverse section of the second duct 118. By disposing, the generated negative ions can be suppressed from being absorbed by the wall portion of the second duct 118, and the ion emission efficiency can be improved.

  In the ion generating apparatus 100 of the present embodiment, positive ions and negative ions are discharged through respective separate channels, thereby suppressing neutralization or recombination of positive ions and negative ions in the channels. Thus, the number of ions disappearing in the first duct 117 and the second duct 118 can be reduced.

  Further, by providing a predetermined gap 52 between the positive ion generation unit 120 and the negative ion generation unit 130, the frame 51 of the portion constituting the positive ion generation unit 120 and the portion constituting the negative ion generation unit 130 The number of ions disappearing in the electrode block 50 can be reduced by suppressing each of the frame bodies 51 from being charged with a reverse polarity.

Therefore, it is possible to supply a sufficient number of positive ions and negative ions to a position away from the ion generator 100 and to mix the positive ions and negative ions in a wide range of space with high density. When positive ions are H ⁺ (H ₂ O) _m (m is an arbitrary natural number) and negative ions are O ₂ ⁻ (H ₂ O) _n (n is an arbitrary natural number), positive ions and negative ions are It attaches to the surface of airborne bacteria to generate active species such as hydrogen peroxide (H ₂ O ₂ ) or hydroxyl radical (.OH), and its action provides a bactericidal effect.

  By releasing positive ions and negative ions in the air as described above, effects such as decomposition of fungi or viruses floating in the air, removal of odors, and dust collection can be obtained. Further, by discharging positive ions and negative ions into the air, static elimination can be performed in a semiconductor factory or the like. By disseminating high concentrations of positive ions and negative ions to every corner of the factory, an excellent static elimination effect can be obtained.

  In the ion generator 100, when the discharge electrode is deteriorated as the usage time elapses, the electrode block 50 can be removed from the power supply circuit unit 11 and easily replaced. Further, when the power supply circuit unit 11 is deteriorated, the power supply circuit unit 11 can be removed from the control unit 12 and easily replaced.

  Moreover, the ion generator 100 is provided with the brush which comprises the cleaning part for cleaning an electrode. Hereinafter, the cleaning brush will be described in detail. FIG. 6 is an exploded perspective view for explaining the configuration of the brush. FIG. 7 is a partially enlarged view showing a state where the electrode and the brush are in contact with each other.

  As shown in FIGS. 6 and 7, the first duct 117 is provided with a first brush 61 extending from a part of the edge of the first opening 117a toward the inside of the first opening 117a. The second duct 118 is provided with a second brush 62 that extends from a part of the edge of the second opening 118a toward the inside of the second opening 118a.

  In the present embodiment, the first brush 61 is provided only in the vicinity of a position where the first discharge electrode 140 and the first induction electrode 150 pass when the electrode block 50 is attached and detached. The second brush 62 is provided only in the vicinity of the position where the second discharge electrode 170 and the second induction electrode 160 pass when the electrode block 50 is attached and detached.

  However, the position where the first brush 61 and the second brush 62 are provided is not limited to the above. For example, the first brush 61 is provided in substantially the entire first opening 117a, and the second brush 62 is provided in the second opening 118a. You may provide substantially the whole.

  In the present embodiment, the first brush 61 extends in a direction orthogonal to the extending direction (axial direction) of the first discharge electrode 140 and the first induction electrode 150 and in a direction orthogonal to the attaching / detaching direction of the electrode block 50. Exist. The second brush 62 extends in a direction orthogonal to the extending direction (axial direction) of the second discharge electrode 170 and the second induction electrode 160 and in a direction orthogonal to the attaching / detaching direction of the electrode block 50.

  However, the extending direction of the first brush 61 and the second brush 62 is not limited to the above, and the first brush 61 has a direction intersecting with the extending direction of the first discharge electrode 140 and the first induction electrode 150 and an electrode. What is necessary is just to extend in the direction which cross | intersects the attachment / detachment direction of the block 50. FIG. The second brush 62 only needs to extend in a direction intersecting with the extending direction of the second discharge electrode 170 and the second induction electrode 160 and in a direction intersecting with the attaching / detaching direction of the electrode block 50.

  With the above configuration, the first discharge electrode 140 and the first induction electrode 150 are rubbed in contact with the first brush 61 when the electrode block 50 is attached or detached. The second discharge electrode 170 and the second induction electrode 160 are rubbed in contact with the second brush 62 when the electrode block 50 is attached or detached.

  As a result, when the electrode block 50 is attached to or detached from the dust and silicon-based solid matter attached to the tips of the first discharge electrode 140 and the first induction electrode 150 as the usage time of the ion generator 100 elapses, the first brush 61 is used. Scraped off.

  Similarly, when the electrode block 50 is attached to or detached from the dust and silicon solid matter attached to the tips of the second discharge electrode 170 and the second induction electrode 160 as the usage time of the ion generator 100 elapses, the second brush 62 is used. Scraped off.

  Therefore, every time the electrode block 50 is attached or detached, the electrodes are cleaned, and the discharge state between the electrodes can be satisfactorily maintained with a simple operation. Thus, in the ion generator 100, the electrode can be stably cleaned with a simple configuration, and the ion generation efficiency in the ion generator can be maintained.

  Moreover, in the ion generator 100 which concerns on this embodiment, as shown to FIGS. 2-4, 6, 7, the electrode block 50 is the 1st in the state with which the 1st duct 117 and the 2nd duct 118 were mounted | worn. It has a recess 59 which is a housing portion for housing the brush 61 and the second brush 62 therein. Specifically, four concave portions 59 are provided on one side surface in a direction orthogonal to the extending direction of the main body 53 that is opposite to the gripping portion 58 side.

  The recess 59 can prevent the frame 51 of the electrode block 50 from interfering with the first brush 61 and the second brush 62 when the electrode block 50 is attached to the first duct 117 and the second duct 118.

  In the ion generator 100, since the 1st brush 61 is arrange | positioned outside the 1st flow path, it can suppress that the flow of the gas in a 1st flow path is disturbed by the 1st brush 61. FIG. Similarly, since the second brush 62 is disposed outside the second flow path, it is possible to suppress the gas flow in the second flow path from being disturbed by the second brush 62.

  As a result, it is possible to suppress an increase in the amount of ions absorbed by the wall portion of the first duct 117 among the positive ions generated by the positive ion generator 120 due to the provision of the first brush 61. Similarly, it is possible to suppress an increase in the amount of ions absorbed in the wall portion of the second duct 118 among the negative ions generated in the negative ion generation unit 130 by providing the second brush 62.

  Therefore, in the ion generator 100, the reduction | decrease in the discharge | release efficiency of the positive ion and negative ion by having provided the 1st brush 61 and the 2nd brush 62 can be suppressed.

  In addition, although the ion generator 100 of this embodiment has two ducts, the number of ducts is not limited to two, and may be only one or three or more. Moreover, the ion generator may include a duct to which no electrode block is attached. When the ion generator has only one duct, an electrode block including either a positive ion generator or a negative ion generator is attached to the duct.

  Furthermore, the ion generator does not necessarily include an induction electrode. That is, it is possible to generate ions by discharging with a single discharge electrode. In addition, each of the discharge electrode and the induction electrode does not necessarily have a needle-like outer shape. For example, the discharge electrode and the induction electrode may be flat plate electrodes.

  Hereinafter, an ion generator according to Embodiment 2 of the present invention will be described. In addition, since the ion generator which concerns on this embodiment differs from the ion generator 100 which concerns on Embodiment 1 only in the structure of the cleaning part, description is not repeated about another structure.

(Embodiment 2)
FIG. 8 is a side view showing the configuration of the cleaning unit of the ion generator according to Embodiment 2 of the present invention. In FIG. 8, the second brush 262 provided in the second duct 118 is illustrated. The first brush provided in the first duct 117 has the same configuration as the second brush.

  As shown in FIG. 8, in the ion generator according to Embodiment 2 of the present invention, the second brush 262 included in the cleaning unit is attached to the outer wall of the second duct 118 by the second brush holder 263 made of sheet metal. Yes. The second duct 118 is provided with a female screw 118 h for attaching the second brush holder 263.

  The second brush holder 263 has a through hole on the side opposite to the side holding the second brush 262. The second brush holder 263 can be attached to the second duct 118 by inserting the screw 264 into the through hole and screwing the screw 264 and the female screw 118 h of the second duct 118.

  The second brush 262 is positioned so as to come into contact with and rub against the second discharge electrode 170 when the electrode block 50 is attached / detached in a state where the second brush 262 is attached to the second duct 118 by the second brush holder 263.

  In the present embodiment, the first brush extends in a direction orthogonal to the extending direction of the first discharge electrode 140 and the first induction electrode 150 and in a direction orthogonal to the attaching / detaching direction of the electrode block 50. The second brush 262 extends in a direction orthogonal to the extending direction of the second discharge electrode 170 and the second induction electrode 160 and in a direction orthogonal to the attaching / detaching direction of the electrode block 50.

  However, the extending direction of the first brush and the second brush 262 is not limited to the above, and the first brush has a direction intersecting with the extending direction of the first discharge electrode 140 and the first induction electrode 150 and the electrode block 50. It suffices if it extends in a direction intersecting with the attaching / detaching direction. The second brush 262 only needs to extend in a direction intersecting with the extending direction of the second discharge electrode 170 and the second induction electrode 160 and in a direction intersecting with the attaching / detaching direction of the electrode block 50.

  In the present embodiment, since the brush is located outside the duct, a recessed portion deeper than the recessed portion 59 of Embodiment 1 is formed as a housing portion in the frame of the electrode block. Even when the cleaning unit is configured as described above, the electrode is cleaned each time the electrode block is attached and detached, and the discharge state between the electrodes can be satisfactorily maintained with a simple operation.

  Hereinafter, an ion generator according to Embodiment 3 of the present invention will be described. In addition, since the ion generator which concerns on this embodiment differs from the ion generator 100 which concerns on Embodiment 1 only in the structure of the cleaning part, description is not repeated about another structure.

(Embodiment 3)
FIG. 9 is a side view showing the configuration of the cleaning unit of the ion generator according to Embodiment 3 of the present invention. FIG. 10 is a view of the cleaning unit of FIG. 9 as viewed from the direction of the arrow X. 9 and 10, the second rubber body 362 attached to the second duct 118 is illustrated. The first rubber body attached to the first duct 117 has the same configuration as the second rubber body.

  As shown in FIGS. 9 and 10, the cleaning unit of the ion generator according to Embodiment 3 of the present invention is a rubber body including a pair of rubber members that come into contact with the discharge electrode when the discharge electrode passes between each other. It is configured. The second rubber body 362 is provided only in the vicinity of a position where the second discharge electrode 170 and the second induction electrode 160 pass when the electrode block 50 is attached and detached.

  The second rubber body 362 includes a rectangular parallelepiped first rubber member 362a and a rectangular parallelepiped second rubber member 362b. However, the shape of the first rubber member 362a and the second rubber member 362b is not limited to a rectangular parallelepiped, and the second discharge electrode 170 or the second induction when the second discharge electrode 170 or the second induction electrode 160 passes between each other. Any shape that contacts the electrode 160 may be used. In the first rubber member 362a and the second rubber member 362b, it is preferable to reduce contact resistance by providing a tapered chamfer at a portion that first contacts the second discharge electrode 170 or the second induction electrode 160. .

  In the present embodiment, the first rubber member 362a is attached to a part of the edge of the second opening 118a with an adhesive. The second rubber member 362b is attached to a part of the edge of the second opening 118a with an adhesive so as to have a predetermined gap between the second rubber member 362b and the first rubber member 362a. The predetermined gap is set to be smaller than the diameters of the second discharge electrode 170 and the second induction electrode 160.

  The first rubber member 362a and the second rubber member 362b do not have to be in contact with each other to provide a gap. In the present embodiment, the first rubber member 362a and the second rubber member 362b contain an abrasive.

  In the present embodiment, the second discharge electrode 170 and the second induction electrode 160 pass between the first rubber member 362a and the second rubber member 362b when the electrode block 50 is attached / detached, and thereby the first rubber. The member 362a and the second rubber member 362b are contacted and rubbed.

  As a result, when the electrode block 50 is attached to or detached from the dust and silicon-based solid matter attached to the tips of the second discharge electrode 170 and the second induction electrode 160 as the usage time of the ion generator 100 elapses, the second rubber body. Scraped by 362. Similarly, the first discharge electrode 140 and the first induction electrode 150 are rubbed in contact with the first rubber body when the electrode block 50 is attached or detached.

  Therefore, every time the electrode block 50 is attached or detached, the electrodes are cleaned, and the discharge state between the electrodes can be satisfactorily maintained with a simple operation. In particular, when an abrasive is contained in the rubber member, the deposits can be removed more firmly from the electrode. Thus, also in the ion generator which concerns on this embodiment, an electrode can be stably cleaned with a simple structure, and the generation efficiency of the ion in an ion generation part can be maintained.

  Hereinafter, an ion generator according to Embodiment 4 of the present invention will be described. In addition, the ion generator which concerns on this embodiment is the ion generator which concerns on Embodiment 1 only with the structure of a 1st induction electrode and a 2nd induction electrode, and the structure of the cleaning part which cleans a 1st induction electrode and a 2nd induction electrode. Different from the device.

(Embodiment 4)
FIG. 11 is an exploded perspective view showing configurations of an electrode block and a cleaning unit of an ion generator according to Embodiment 4 of the present invention. FIG. 12 is an enlarged view of the induction electrode and the cleaning unit of the ion generator according to the present embodiment.

  As shown in FIG. 11, in the ion generator according to Embodiment 4, the first induction electrode 450 and the second induction electrode 460 are flat plate electrodes having a flat outer shape. The first induction electrode 450 and the second induction electrode 460 may be electrically connected to each other and have the same potential, or may be electrically floating.

  By using the first induction electrode 450 and the second induction electrode 460 as flat plate electrodes, the first induction electrode 150 and the second induction electrode 160 are first needle-like electrodes as in the first embodiment. The electric field strength between the discharge electrode 140 and the first induction electrode 450 and the electric field strength between the second induction electrode 160 and the second discharge electrode 470 are weakened.

  Therefore, when the induction electrode is a flat plate electrode, in order to obtain the same electric field strength by applying a predetermined voltage, the distance between the discharge electrode and the induction electrode is larger than when the induction electrode is a needle electrode. It needs to be shortened. In other words, the distance between the discharge electrode and the induction electrode can be shortened by using the induction electrode as a flat plate electrode. The flat plate electrode has a smaller amount of protrusion of the electrode itself from the wall of the bulging portion than the needle electrode.

  Therefore, by making the induction electrode a flat plate electrode, the electrode block can be reduced in size, and the ion generator itself can be reduced in size.

  As shown in FIG. 12, in the cleaning part of the ion generator according to Embodiment 4 of the present invention, the first induction electrode 450 and the second induction electrode 460, which are plate electrodes, can be rubbed with each other. A brush having a different extending direction from the first brush 61 and the second brush 62 is provided.

  Specifically, the cleaning unit 461 that cleans the first induction electrode 450 includes a first brush 461b that bridges the first opening 117a so as to face the first induction electrode 450 and holds the first brush 461b. 1 brush holder 461a.

  The cleaning unit 462 for cleaning the second induction electrode 460 includes a first brush 461b, a second brush holder 462a that bridges the second opening 118a so as to face the second induction electrode 460, and holds the second brush 462b. including.

  In the present embodiment, the first brush 461b extends in a direction orthogonal to the main surface of the first induction electrode 450 facing the first discharge electrode 140 and in a direction orthogonal to the attachment / detachment direction of the electrode block 50. Yes. The second brush 462b extends in a direction orthogonal to the main surface of the second induction electrode 460 facing the second discharge electrode 170 and in a direction orthogonal to the attaching / detaching direction of the electrode block 50.

  However, the extending directions of the first brush 461b and the second brush 462b are not limited to the above, and the first brush 461b intersects the main surface of the first induction electrode 450 facing the first discharge electrode 140, and What is necessary is just to extend in the direction which cross | intersects the attachment / detachment direction of the electrode block 50. FIG. The second brush 462b only needs to extend in the direction intersecting the main surface of the second induction electrode 460 facing the second discharge electrode 170 and the direction intersecting the attaching / detaching direction of the electrode block 50.

  With the above configuration, the first discharge electrode 140 and the first induction electrode 450 are rubbed in contact with the first brush 461b when the electrode block 50 is attached or detached. The second discharge electrode 170 and the second induction electrode 460 are rubbed in contact with the second brush 462b when the electrode block 50 is attached or detached.

  As a result, dust and silicon-based solid matter adhering to the surface of the first induction electrode 450 with the passage of the use time of the ion generator are scraped off by the first brush 461b when the electrode block 50 is attached or detached.

  Similarly, dust and silicon-based solid matter adhering to the surface of the second induction electrode 460 with the passage of the use time of the ion generator are scraped off by the second brush 462b when the electrode block 50 is attached or detached.

  Therefore, every time the electrode block 50 is attached or detached, the electrodes are cleaned, and the discharge state between the electrodes can be satisfactorily maintained with a simple operation. Thus, also in the ion generator which concerns on this embodiment, an electrode can be stably cleaned with a simple structure, and the generation efficiency of the ion in an ion generation part can be maintained.

  Hereinafter, an ion generator according to Embodiment 5 of the present invention will be described. The ion generator according to this embodiment is different from the ion generator according to Embodiment 1 only in that the first induction electrode and the second induction electrode are one common flat plate electrode.

(Embodiment 5)
FIG. 13 is a perspective view showing a configuration of an ion generator according to Embodiment 5 of the present invention. 14 is a cross-sectional view as seen from the direction of the arrow XIV-XIV in FIG. 15 is a cross-sectional view seen from the direction of the arrow XV-XV in FIG.

  As shown in FIG. 13, in the ion generator according to Embodiment 5 of the present invention, the frame body 51 of the electrode block 50 is an integral bulging portion in which the second bulging portion and the third bulging portion are integrated. 555 is included. Correspondingly, the first opening and the second opening of the first duct 117 and the second duct 118 are integrally formed as one common integrated opening 517a.

  As shown in FIGS. 14 and 15, a flat plate-like integrated induction electrode 550 in which the first induction electrode and the second induction electrode are integrated is embedded in the integral bulging portion 555. Also in this case, positive ions are generated by corona discharge between the first discharge electrode 140 and the integrated induction electrode 550, and negative ions are generated by corona discharge between the integrated induction electrode 550 and the second discharge electrode 170. Can be generated.

  In the present embodiment, since the integrated induction electrode 550 does not protrude from the wall of the integrated bulge portion 555, the electrode block can be further downsized as compared with the fourth embodiment. Moreover, the number of parts can be reduced by sharing the induction electrode.

  In the present embodiment, since the integrated induction electrode 550 is located inside the integrated bulge portion 555, it is not necessary to clean the integrated induction electrode 550. Therefore, the cleaning part which cleans an induction electrode can be reduced, and the number of parts of an ion generator can be reduced.

  Hereinafter, Experimental Example 1 in which the concentration distributions of ions released from the ion generator of the comparative example and the ion generator of the reference example are compared will be described.

(Experiment 1)
FIG. 16 is a plan view showing a configuration of an ion generator according to a reference example. FIG. 17 is a plan view showing a configuration of an ion generator according to a comparative example. FIG. 18 is a plan view showing a configuration of an ion generator according to a comparative example. FIG. 19 is a view of the ion generation part of FIG. 18 as viewed from the arrow XIV.

  As shown in FIGS. 16 and 17, air was blown into a common duct 900 having a flow path having a length of 604 mm and a width of 34 mm by a cross flow fan (not shown) at a flow rate of 5 m / sec on the electrode.

  As shown in FIG. 16, in the reference example, an interval of 20 mm is provided between the first duct 117 having a flow path having a length of 103 mm and a width of 34 mm in the upper center of the common duct 900 and the first duct 117. The second duct 118 having a flow path having a length of 103 mm and a width of 34 mm was provided. The distance between the outer wall of the first duct 117 and the outer wall of the second duct 118 that are located opposite to each other and opposed to each other was 245 mm.

  A needle-like first discharge electrode 140 protruding 11.5 mm from the inner wall of the first duct 117 opposite to the second duct 118 side was provided. A first induction electrode 150 projecting 11.5 mm was provided so as to face the first discharge electrode 140 from the inner wall of the first duct 117 on the second duct 118 side. The distance between the tip of the first discharge electrode 140 and the tip of the first induction electrode 150 was 80 mm.

  A needle-like second induction electrode 160 protruding 11.5 mm from the inner wall of the second duct 118 on the first duct 117 side so as to face the second discharge electrode 170 was provided. A second discharge electrode 170 that protrudes 11.5 mm from the inner wall of the second duct 118 opposite to the first duct 117 is provided. The distance between the tip of the second induction electrode 160 and the tip of the second discharge electrode 170 was 80 mm.

  In order to bring the conditions close to those of the ion generation unit 800 of the comparative example, the first discharge electrode 140 and the first induction electrode 150 are positioned so as to be biased to one side in the width direction of the first duct 117 as shown in FIG. . Specifically, the first discharge electrode 140 and the first discharge electrode 140 are arranged so that the central axes of the first discharge electrode 140 and the first induction electrode 150 are located at a position 17 mm from the inner wall on one side in the width direction of the first duct 117. One induction electrode 150 was arranged.

  Similarly, the second induction electrode 160 and the second discharge electrode 170 are biased to one side in the width direction of the second duct 118. Specifically, the second induction electrode 160 and the second induction electrode 160 and the second discharge electrode 170 are positioned so that the central axes of the second induction electrode 160 and the second discharge electrode 170 are located at a position 17 mm from the inner wall on one side in the width direction of the second duct 118. Two discharge electrodes 170 were arranged.

  As shown in FIGS. 17 to 19, in the comparative example, a duct 910 having a flow path with a length of 235.5 mm and a width of 34 mm is provided at the upper center of the common duct 900. Air was blown into the common duct 900 at a flow rate of 5 m / sec on the electrode by a cross flow fan (not shown). The ion generating part 800 was arranged on the inner wall on one side in the width direction of the duct 910.

  The ion generation unit 800 includes a needle-shaped first discharge electrode 810 protruding from the power supply circuit unit 850 and a needle-shaped second discharge electrode 820 that is positioned in parallel with the first discharge electrode. . The ion generator 800 includes an annular first induction electrode 830 that faces the tip of the first discharge electrode 810 with a predetermined interval, and an annular shape that faces the tip of the second discharge electrode 820 with a predetermined interval. The second induction electrode 840 is included.

  The ion generator 800 is arranged so that the tips of the first discharge electrode 810 and the second discharge electrode 820 are in contact with the flow path in the duct 910.

  The power supply circuit unit 850 applies a positive high voltage to the first discharge electrode 810, applies a negative high voltage to the second discharge electrode 820, and sets the first induction electrode 830 and the second induction electrode 840 to the ground potential. By fixing, positive ions were generated near the tip of the first discharge electrode 810 and negative ions were generated near the tip of the second discharge electrode 820.

  FIG. 20 is a graph showing the concentration distribution of positive ions measured at a position 250 mm away from the electrode above the first duct and the second duct in the reference example. FIG. 21 is a graph showing the concentration distribution of positive ions measured at a position 1 m away from the electrode above the first duct and the second duct in the reference example.

  FIG. 22 is a graph showing the negative ion concentration distribution measured at a position 250 mm away from the electrode above the first duct and the second duct in the reference example. FIG. 23 is a graph showing the concentration distribution of negative ions measured at a position 1 m away from the electrode above the first duct and the second duct in the reference example.

  FIG. 24 is a graph showing the concentration distribution of positive ions measured at a position 250 mm away from the electrode above the duct in the comparative example. FIG. 25 is a graph showing the concentration distribution of positive ions measured at a position 1 m away from the electrode above the duct in the comparative example.

  FIG. 26 is a graph showing the concentration distribution of negative ions measured at a position 250 mm away from the electrode above the duct in the comparative example. FIG. 27 is a graph showing the concentration distribution of negative ions measured at a position 1 m away from the electrode above the duct in the comparative example.

  20 to 27, the vertical axis indicates the coordinate in the duct width direction, the horizontal axis indicates the coordinate in the length direction of the duct, and the normalized ion concentration is indicated by contour lines. The center position of the flow path in the common duct 900 is set to 0 on the coordinate axis.

  As shown in FIG. 20, a high concentration region of positive ions exists on the first discharge electrode 140 side on the first duct 117 at a position 250 mm away from the electrode in the reference example. As shown in FIG. 22, a high concentration region of negative ions exists on the second discharge electrode 170 side on the second duct 118 at a position 250 mm away from the electrode in the reference example. Therefore, most of the positive ions and the negative ions are located away from each other immediately after the release, and the bond annihilation of the positive ions and the negative ions is suppressed.

  As shown in FIG. 21, positive ions are diffused radially from substantially the center of the common duct 900 at a position 1 m away from the electrode in the reference example. As shown in FIG. 23, in the reference example, at a position 1 m away from the electrode, negative ions are diffused radially from substantially the center of the common duct 900. Therefore, positive ions and negative ions are mixed in a wide area of the released space.

  Thus, in the reference example, it was confirmed that a sufficient number of positive ions and negative ions could be supplied to a position away from the ion generator.

  As shown in FIG. 24, in the position of 250 mm away from the electrode in the comparative example, positive ions are diffused radially from the center of the duct 910 in the longitudinal direction and from the vicinity of the inner wall on one side in the width direction. Yes. As shown in FIG. 25, at a position 250 mm away from the electrode in the comparative example, negative ions are diffused radially from the center of the longitudinal direction of the duct 910 and from the vicinity of the inner wall on one side in the width direction. Yes. Therefore, immediately after the release, many of positive ions and negative ions are bonded to each other and disappear.

  As shown in FIG. 25, positive ions are diffused radially from substantially the center of the duct 910 at a position 1 m away from the electrode in the comparative example. As shown in FIG. 27, in the comparative example, at a position 1 m away from the electrode, negative ions are diffused radially from substantially the center of the duct 910. Therefore, positive ions and negative ions are mixed in the released space. However, the concentration of released positive ions and negative ions was lower than that of the reference example, and the range of released positive ions and negative ions was also narrower than that of the reference example.

  In the case of this comparative example, there is room for further improvement of effects such as decomposition of mold fungi or viruses floating in the air, removal of odors, dust collection, etc. due to binding of positive ions and negative ions.

  Hereinafter, Experimental Example 2 in which the amount of ions released from the ion generator of the comparative example and the ion generator of the reference example are compared will be described.

(Experimental example 2)
Using the ion generator of the comparative example and the ion generator of the reference example used in Experimental Example 1, the amount of ions at a position 500 mm from the electrode was compared. The amount of ions was measured at a total of 35 points in a lattice shape of 5 points at 25 mm intervals in the width direction of the common duct 900 and 7 points at 50 mm intervals in the length direction.

  Table 1 shows the maximum value of the positive ion amount, the maximum value of the negative ion amount, and the integrated value of the ion amount at the 35 measurement points among the 35 measurement points in the comparative example and the reference example. As a standardized summary.

表１に示すように、参考例における正イオン量の最大値は比較例の１２９％、負イオン量の最大値は比較例の１３１％、３５計測点のイオン量の積分値は比較例の２３６％であった。

As shown in Table 1, the maximum value of the positive ion amount in the reference example is 129% of the comparative example, the maximum value of the negative ion amount is 131% of the comparative example, and the integrated value of the ion amount at 35 measurement points is 236 of the comparative example. %Met.

  From the above experimental results, it was confirmed that the ion generator of the reference example was able to supply more positive ions and negative ions than the ion generator of the comparative example. Moreover, it was confirmed that many ions can be supplied by setting the distance between electrodes to 80 mm.

  The embodiments and experimental examples disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 11 Power supply circuit unit, 12 Control part, 13, 18, 19 Diode, 14 Resistance, 15 Capacitor, 16 2 terminal thyristor, 17 Boost transformer, 30 Motor, 40, 41 Impeller, 50 Electrode block, 51 Frame, 52 Gap 53 Main body part 54 First bulging part 55 Second bulging part 56 Third bulging part 57 Fourth bulging part 58 Gripping part 59 Recessed part 61, 461b First brush 62, 262 , 462b Second brush, 100 ion generator, 110 housing, 111 upper housing, 112 lower housing, 112a, 112b suction port, 113, 114 outlet cylinder, 113a, 114a air outlet, 115, 116 protective net, 117 1st duct, 117a 1st opening, 118 2nd duct, 118a 2nd opening, 118h female screw, 120 positive ion generation Live part, 130 negative ion generation part, 140,810 first discharge electrode, 150, 450, 830 first induction electrode, 160, 460, 840 second induction electrode, 170, 470, 820 second discharge electrode, 190 connector, 263, 462a second brush holder, 264 screw, 362 second rubber body, 362a first rubber member, 362b second rubber member, 461, 462 cleaning part, 461a first brush holder, 517a integral opening, 550 integral induction electrode, 555 Integrated swelling part, 800 ion generation part, 850 power supply circuit part, 900 common duct, 910 duct.

Claims (12)

A blower mechanism;
A flow path through which the gas blown by the blowing mechanism flows, and a duct having an opening on the side wall;
An electrode block including an ion generating part having a discharge electrode, and detachably attached to the duct;
A cleaning unit provided in the duct for cleaning the discharge electrode;
In a state where the electrode block is mounted on the duct, the discharge electrode is located in the flow path, and the opening is closed by the electrode block,
The discharge generator is an ion generator, which is rubbed in contact with the cleaning unit when the electrode block is attached or detached. The discharge electrode has a needle-like outer shape;
The ion generator according to claim 1, wherein an axial direction of the discharge electrode in the electrode block intersects with a direction in which the electrode block is attached to and detached from the duct.   The ion generator according to claim 1, wherein the electrode block includes an induction electrode facing the discharge electrode.   The ion generator according to claim 3, wherein the induction electrode has a needle-like outer shape.   The ion generator according to any one of claims 1 to 4, wherein the electrode block includes a housing portion that houses the cleaning portion in a state where the electrode block is mounted on the duct.   The ion generator according to claim 1, wherein the cleaning unit includes a brush.   The cleaning portion extends with respect to the duct in a direction intersecting the attaching / detaching direction of the electrode block and extending in a direction intersecting the axial direction of the needle-like discharge electrode in the electrode block to be attached / detached. The ion generator according to claim 6.   The ion generator according to claim 1, wherein the cleaning unit includes a pair of rubber members that come into contact with the discharge electrode when the discharge electrode passes between each other.   The ion generator according to claim 8, wherein the rubber member contains an abrasive. The duct includes a first duct and a second duct located adjacent to each other;
The first duct constitutes a first flow path that is the flow path, and has a first opening on a side wall,
The second duct constitutes a second flow path that is the flow path, and has a second opening on a side wall,
The ion generator includes a positive ion generator and a negative ion generator,
The positive ion generation unit includes a first discharge electrode that is the discharge electrode and to which a positive voltage is applied, and a first induction electrode that faces the first discharge electrode,
The said negative ion generation part has a 2nd discharge electrode which is the said discharge electrode and a negative voltage is applied, and a 2nd induction electrode facing the said 2nd discharge electrode. Ion generator.   The ion generator according to claim 10, wherein the first induction electrode and the second induction electrode are electrically connected to each other and have the same potential.   The ion generator according to claim 10 or 11, wherein the electrode block has a predetermined gap between the positive ion generator and the negative ion generator.

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