JP2014006974A - Ion generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently emit ions and easily exchange a deteriorated discharge electrode.SOLUTION: An ion generating device comprises: a blowing mechanism; an air duct which forms a flow passage through which a portion of gas blown by the blowing mechanism is circulated and has an opening in a side wall; and an electrode block 50 which includes an ion generating part and is detachably attached to the air duct. The ion generating part includes a needle-like discharge electrode to be applied with a positive voltage or a negative voltage, and an induction electrode facing the discharge electrode. In the state in which the electrode block 50 is attached to the air duct, the ion generating part is inserted into the opening, the discharge electrode and the induction electrode are positioned so as to face each other in the flow passage, and the opening is blocked by 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.

  Conventionally, ion generators have been used to purify, sterilize, or deodorize indoor air. Many ion generators generate positive ions and negative ions by corona discharge.

  Japanese Patent Application Laid-Open No. 2010-80425 (Patent Document 1) is a prior art document that discloses the configuration of an ion generator that generates ions by corona discharge.

  The ion generator described in Patent Document 1 includes a blower and two ducts that individually distribute the air sent by the blower in the same direction and discharge the air to the outside. A laminar flow portion is provided in a part or all of each duct so that air flows in a laminar flow.

  An ion generating part is arranged in each laminar flow part. The ion generating part has a discharge electrode convex part having a sharp shape and an induction electrode ring surrounding the discharge electrode convex part. Discharge electrode projections are arranged at the center of each induction electrode ring.

JP 2010-80425 A

  In the ion generation part, the discharge electrode deteriorates with the passage of use time, and the amount of ions generated decreases. Therefore, the concentration of ions released into the room decreases with time. In the conventional ion generator, since the ion generator including the ion generator is fitted and fixed in the through hole of the duct wall, it is difficult to replace the discharge electrode.

  Also, when using an ion generator that generates ions by discharging between the discharge electrode convex portion and the induction electrode ring, the ion generator is disposed on any wall portion of the duct, so that the cross section of the duct Ions are generated in the vicinity of the wall where the ion generator is disposed. In this case, some of the generated ions are absorbed by the wall of the duct, and there is room for improvement in terms of ion release efficiency.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide an ion generator that can efficiently discharge ions and can easily replace a deteriorated discharge electrode.

  The ion generator based on this invention comprises the ventilation mechanism and the flow path through which some gas ventilated by the ventilation mechanism distribute | circulates, The duct which has an opening in a side wall, and an ion generation part, It is detachable to a duct And an electrode block to be mounted on. The ion generator has a needle-like discharge electrode to which a positive voltage or a negative voltage is applied and an induction electrode facing the discharge electrode. In a state where the electrode block is mounted on the duct, the ion generating part is inserted through the opening, the discharge electrode and the induction electrode are positioned so as to face each other in the flow path, and the opening is formed by the electrode block. It is blocked.

  In one form of this invention, an ion generator is further provided with the power supply circuit unit which is connected with an electrode block and applies a positive voltage or a negative voltage to a discharge electrode.

  In one embodiment of the present invention, the power supply circuit unit is detachably attached to the duct.

  In one form of this invention, a power supply circuit unit has a guide part at the time of attaching an electrode block to a duct.

  In one form of the present invention, the duct includes a first duct and a second duct located adjacent to each other. The 1st duct constitutes the 1st channel which is a channel, and has the 1st opening in the 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 generation unit includes a first discharge electrode that is a discharge electrode and to which a positive voltage is applied, and a first induction electrode that is an induction electrode and 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 is an induction electrode and faces the second discharge electrode. In a state where the electrode block is mounted on the first duct and the second duct, the positive ion generating part is inserted through the first opening, and the first discharge electrode and the first induction electrode are located in the first flow path, The negative ion generating part is inserted through the second opening, the second discharge electrode and the second induction electrode are located in the second flow path, and the first opening and the second opening are closed by the electrode block. .

  In one embodiment of the present invention, the first discharge electrode and the first induction electrode are located apart from each other at both ends in the cross section of the first flow path. The second discharge electrode and the second induction electrode are located apart from each other at both ends in the cross section of the second flow path.

  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.

  According to the present invention, ions can be efficiently released, and a deteriorated discharge electrode can be easily replaced.

It is sectional drawing which shows the structure of the ion generator which concerns on Embodiment 1 of this invention. It is sectional drawing seen from the II-II line arrow direction of FIG. It is sectional drawing seen from the III-III line arrow direction of FIG. It is a perspective view which shows the external appearance of the electrode block which concerns on the same embodiment. It is a top view which shows the external appearance of the electrode block which concerns on the same embodiment. It is sectional drawing which shows the structure of the electrode block which concerns on the same embodiment. It is sectional drawing which shows the state which attaches / detaches an electrode block to a 1st duct and a 2nd duct. 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 sectional drawing which shows the structure of the electrode block of the ion generator which concerns on the 1st modification of the embodiment. It is a perspective view which shows the external appearance of the power supply circuit unit of the ion generator which concerns on the 2nd modification of the embodiment. It is sectional drawing which shows the structure of the ion generator which concerns on Embodiment 2 of this invention. It is a perspective view which shows the state which mounts | wears with the electrode block of the ion generator which concerns on the same embodiment. It is a perspective view which shows the structure of the ion generator which concerns on the 1st modification of the embodiment. It is a perspective view which shows the structure of the ion generator which concerns on the 2nd modification of the embodiment. It is sectional drawing seen from the XV-XV line arrow direction of FIG. It is sectional drawing seen from the XVI-XVI 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. 19 from arrow XVI. 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. FIG. 2 is a cross-sectional view as seen from the direction of arrows II-II in FIG. 3 is a cross-sectional view seen from the direction of arrows III-III in FIG.

  As shown in FIGS. 1 and 2, the ion generator 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 distribute separately the gas discharged | emitted from the impeller 40, and the gas discharge | released from the impeller 41, 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 distribute | circulates. 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 and a negative ion generator.

  FIG. 4 is a perspective view showing an appearance of the electrode block according to the present embodiment. FIG. 5 is a plan view showing the appearance of the electrode block according to the present embodiment. FIG. 6 is a cross-sectional view showing the configuration of the electrode block according to this embodiment.

  As shown in FIGS. 1-6, in the electrode block 50 which concerns on this embodiment, the rectangular parallelepiped positive ion generation part 120 and the rectangular parallelepiped negative ion generation part 130 are located in parallel, and are mutually connected. A predetermined gap 52 is provided between the positive ion generator 120 and the negative ion generator 130. The skeleton of the electrode block 50 is constituted by a frame 51 of a resin molded product.

  The frame 51 has an opening 121 having a rectangular shape in plan view in the positive ion generation unit 120, and an opening 131 having a rectangular shape in plan view in the negative ion generation unit 130. Since the one end of the frame 51 in a direction orthogonal to the direction in which the positive ion generator 120 and the negative ion generator 130 are arranged is continuous, the positive ion generator 120 and the negative ion generator 130 are connected. ing. The other end of the frame 51 in the orthogonal direction is discontinuous by the gap 52. The frame 51 has a cavity at one end and the other end in the orthogonal direction.

  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.

  Each of first discharge electrode 140, first induction electrode 150, second induction electrode 160, and second discharge electrode 170 extends in a direction orthogonal to the direction in which positive ion generator 120 and negative ion generator 130 are arranged. It has a central axis.

  The first discharge electrode 140 is provided so as to penetrate the first discharge electrode substrate 141. The front end portion of the first discharge electrode 140 protruding to the one main surface side of the first discharge electrode substrate 141 passes through the frame body 51 and is located in the opening 121. A base portion of the first discharge electrode 140 protruding to the other main surface side of the first discharge electrode substrate 141 is connected to a first connector 184 provided on the other main surface of the first discharge electrode substrate 141. Yes. The first discharge electrode substrate 141 and the first connector 184 are accommodated in the cavity at the other end of the frame body 51.

  The second discharge electrode 170 is provided so as to penetrate the second discharge electrode substrate 171. The front end portion of the second discharge electrode 170 protruding to the one main surface side of the second discharge electrode substrate 171 passes through the frame body 51 and is located in the opening 131. A base portion of the second discharge electrode 170 protruding to the other main surface side of the second discharge electrode substrate 171 is connected to a second connector 187 provided on the other main surface of the second discharge electrode substrate 171. Yes. The second discharge electrode substrate 171 and the second connector 187 are accommodated in the cavity at the other end of the frame body 51.

  The first induction electrode 150 is provided so as to penetrate the induction electrode substrate 151. The distal end portion of the first induction electrode 150 is positioned in the opening 121 through the frame body 51. The second induction electrode 160 is provided so as to penetrate the induction electrode substrate 151. The distal end portion of the second induction electrode 160 is positioned in the opening 131 through the frame body 51.

  A conductive pattern (not shown) is provided on the main surface of the induction electrode substrate 151. In the present embodiment, the first induction electrode 150 and the second induction electrode 160 are connected to each other by a conductive pattern and have the same potential. The conductive pattern is connected to the third connector 152 provided on the main surface of the induction electrode substrate 151.

  The induction electrode substrate 151 and the third connector 152 are accommodated in a cavity at one end of the frame body 51. The tip of the third connector 152 is inserted into a through hole provided in the frame 51 and faces the gap 52.

  As shown in FIG. 2, the power supply circuit unit 11 and the control unit 12 are provided in the upper casing 111 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). As shown in FIG. 2, the power supply unit is connected to an AC (alternating current) cord 90 drawn from the lower portion of the lower casing 112 and connected to a commercial power supply by a wiring (not shown), and is supplied with an alternating current. The control unit 12 is fixed to the first duct 117 and the second duct 118.

  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.

  Specifically, as shown in FIG. 3, the power supply circuit unit 11 includes a first terminal 11 a connected to the first connector 184 and a second terminal 11 b connected to the second connector 187. . A positive voltage is applied from the power supply circuit unit 11 to the first discharge electrode 140 via the first terminal 11 a and the first connector 184. A negative voltage is applied from the power supply circuit unit 11 to the second discharge electrode 170 via the second terminal 11 b and the second connector 187.

  In the present embodiment, the power supply circuit unit 11 has a third terminal 153 connected to the secondary winding of the step-up transformer 17. The third terminal 153 is connected to the third connector 152 by a conducting wire 185.

  The first connector 184 and the first terminal 11a, the second connector 187 and the second terminal 11b, and the third connector 152 and the third terminal 153 are detachably connected to each other. Thereby, the electrode block 50 is detachably attached to the first duct 117 and the second duct 118.

  FIG. 7 is a cross-sectional view showing a state in which the electrode block is attached to and detached from the first duct and the second duct. As shown in FIG. 7, when the electrode block 50 is attached to and detached from the first duct 117 and the second duct 118, the upper housing 111 is removed from the lower housing 112.

  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. In addition, an opening 117b for attaching and detaching the electrode block 50 is provided on the side wall at the top of the first duct 117 at a position facing the first opening 117a.

  Similarly, a second opening (not shown) for attaching and detaching the electrode block 50 is provided on the upper side wall of the second duct 118 and extends so as to be continuous with the first opening 117a. In addition, an opening for attaching and detaching the electrode block 50 is provided in a position facing the second opening in the upper side wall of the second duct 118.

  When the electrode block 50 is attached to and detached from 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.

  As shown in FIG. 2, in a state where the electrode block 50 is attached to 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, 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. In addition, the opening 121 of the positive ion generator 120 can constitute a part of the first flow path. Similarly, a part of the second flow path can be constituted by the opening 131 of the negative ion generation unit 130.

  As shown in FIG. 7, the power supply circuit unit 11 is detachably connected to the control unit 12 by being moved in the direction indicated by the arrow 70. 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.

  As described above, the 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. 8 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. 8, 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.

  In the present embodiment, as described above, the first induction electrode 150 and the second induction electrode 160 are connected to each other by the third connector 132, the third terminal 153, and the conducting wire 185 so as to have zero potential. Thereby, the electric potential of the 1st induction electrode 150 and the 2nd induction electrode 160 can be stabilized, and the discharge in the positive ion generation part 120 and the negative ion generation part 130 can be stabilized.

  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 sharp 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 generated by arranging them at substantially the center in 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. It can suppress that a 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 generated by arranging them at substantially the center in 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. The negative ions absorbed by the wall of the second duct 118 can be suppressed, 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.

  Hereinafter, the 1st modification of the ion generator which concerns on this embodiment is demonstrated. The ion generator of the first modification differs from the ion generator 100 according to Embodiment 1 only in that the first induction electrode 150 and the second induction electrode 160 are in an electrically floating state.

  FIG. 9 is a cross-sectional view showing the configuration of the electrode block of the ion generator according to the first modification of the present embodiment. As shown in FIG. 9, in the ion generator according to the first modification, the induction electrode substrate 151 is bonded to the frame 51 with an adhesive 154.

  The first induction electrode 150 and the second induction electrode 160 are not connected to the secondary winding of the step-up transformer 17 and are at zero potential in an electrically floating state. Even in this case, corona discharge is caused between the first discharge electrode 140 and the first induction electrode 150 to cause positive ions to be corona discharged between the second discharge electrode 170 and the second induction electrode 160. Negative ions can be generated.

  Hereinafter, the 2nd modification of the ion generator which concerns on this embodiment is demonstrated. In the ion generator of the second modification, the ion generation according to the first embodiment is only performed in that the power supply circuit unit 11 has a guide portion when the electrode block 50 is attached to the first duct 117 and the second duct 118. Different from the device 100.

  FIG. 10 is a perspective view showing the appearance of the power supply circuit unit of the ion generator according to the second modification of the present embodiment. As shown in FIG. 10, in the ion generator according to the second modification, the guide portion 12 a that is in sliding contact with the lower corner of the frame 51 in the positive ion generator 120 of the electrode block 50, and the negative of the electrode block 50 The power supply circuit unit 11 is provided with a guide portion 12 b that is in sliding contact with a lower corner portion of the frame 51 in the ion generating portion 130.

  By moving the electrode block 50 along the guide portions 12a and 12b, the electrode block 50 can be removed from the power supply circuit unit 11 or the electrode block 50 can be attached to the power supply circuit unit 11. Can be replaced.

  In this modification, the lower surfaces of the guide portions 12a and 12b are streamlined. By doing in this way, when the gas which distribute | circulates the inside of a flow path passes the electrode block 50, it can suppress that the flow of this gas is disturb | confused. As a result, it is possible to suppress the ions generated in the electrode block 50 from being absorbed in contact with the wall portions of the first and second ducts 117 and 118, thereby improving the ion emission efficiency.

  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.

  Hereinafter, an ion generator according to Embodiment 2 of the present invention will be described. The ion generator 200 according to the present embodiment is mainly different from the ion generator 100 according to the first embodiment in the arrangement of electrodes in the electrode block.

(Embodiment 2)
FIG. 11 is a cross-sectional view showing a configuration of an ion generator according to Embodiment 2 of the present invention. FIG. 12 is a perspective view showing a state in which the electrode block of the ion generator according to this embodiment is mounted. In FIG. 12, only a part of the first duct 217 and the second duct 218 is illustrated.

  As shown in FIGS. 11 and 12, in the ion generator 200 according to the second embodiment of the present invention, each of the first discharge electrode 240, the first induction electrode 250, the second induction electrode 260, and the second discharge electrode 270 includes: The positive ion generator 220 and the negative ion generator 230 have a central axis extending in the direction in which the positive ion generator 220 and the negative ion generator 230 are arranged.

  Specifically, the frame body 51 of the electrode block 59 according to the present embodiment extends in the direction in which the positive ion generation unit 220 and the negative ion generation unit 230 are aligned, and the positive ion generation unit 220 and the negative ion generation unit 230. 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 240 protrudes from the surface of the first bulging portion 54 that faces the second bulging portion 55. The first induction electrode 250 protrudes from the surface of the second bulging portion 55 that faces the first bulging portion 54. The second induction electrode 260 protrudes from the surface of the third bulging portion 56 that faces the fourth bulging portion 57. The second discharge electrode 270 protrudes from the surface of the fourth bulging portion 57 facing the third bulging portion 56.

  The first discharge electrode 240 is connected to a connector 290 provided on the side surface of the main body 53 by being connected to the conductive wire routed in the first bulging portion 54 and the main body 53. The first induction electrode 250 is connected to a conductor 290 routed in the second bulging portion 55 and the main body portion 53 and connected to a connector 290 provided on the side surface of the main body portion 53.

  The second induction electrode 260 is connected to a connector 290 provided on the side surface of the main body 53 by being connected to the conductive wires routed in the third bulging portion 56 and the main body 53. The second discharge electrode 270 is connected to a connector 290 provided on the side surface of the main body 53 by being connected to the conductive wires routed in the fourth bulging portion 57 and the main body 53.

  The first induction electrode 250 and the second induction electrode 260 are connected to a common conducting wire routed through the main body 53 and have the same potential.

  In the present embodiment, the first duct 217 and the second duct 218 are composed of the same member, and the power supply circuit unit 211 and the control unit 212 are provided on the opposite side of the second duct 218 from the first duct 217. Has been placed.

  The power supply circuit unit 211 has an insertion port 211a into which the connector 290 is inserted, and is detachably connected to the control unit 212. The control unit 212 is fixed to the first duct 217 and the second duct 218.

  By inserting the connector 290 of the electrode block 59 into the insertion port 211 a of the power circuit unit 211, the power circuit unit 211 is connected to the electrode block 59. The power supply circuit unit 211 applies a positive voltage to the first discharge electrode 240 and applies a negative voltage to the second discharge electrode 270.

  A first opening 217 a for attaching and detaching the electrode block 59 is provided on the upper side wall of the first duct 217. Similarly, the upper side wall of the second duct 218 is provided with a second opening 218a extending so as to be continuous with the first opening 217a for attaching and detaching the electrode block 59.

  As shown in FIG. 12, when the electrode block 59 is attached to the first duct 217 and the second duct 218, the electrode block 59 is moved in the direction indicated by the arrow 80 with respect to the first duct 217 and the second duct 218. Let At this time, the electrode block 59 is moved while holding the holding portion 58.

  As shown in FIG. 11, in a state where the electrode block 59 is attached to the first duct 217 and the second duct 218, the positive ion generator 220 is inserted through the first opening 217a, and the first discharge electrode 240 and the second discharge electrode 240 are inserted. The one induction electrode 250 is located away from each other at both ends in the cross section of the first flow path.

  Further, the negative ion generator 230 is inserted through the second opening 218a, and the second discharge electrode 270 and the second induction electrode 260 are located apart from each other at both ends in the cross section of the second flow path. The first opening 217 a and the second opening 218 a are closed by the frame body 51 of the electrode block 59.

  Thus, by attaching the electrode block 59 to the first duct 217 and the second duct 218, the positive ion generation unit 220 and the negative ion generation unit 230 can be arranged in separate flow paths.

  In the ion generator 200 of the present embodiment, positive ions and negative ions are discharged through different flow channels, thereby suppressing neutralization or recombination of positive ions and negative ions in the flow channel. Thus, the number of ions disappearing in the first duct 217 and the second duct 218 can be reduced.

  In addition, the first discharge electrode 240 and the first induction electrode 250 are arranged at substantially the center in the direction orthogonal to the direction in which the positive ion generation unit 220 and the negative ion generation unit 230 are arranged in the transverse section of the first duct 217. By doing so, it can suppress that the generated positive ion is absorbed by the wall part of the 1st duct 217, and can improve the discharge | release efficiency of ion.

  Similarly, the second discharge electrode 270 and the second induction electrode 260 are approximately centered in the direction orthogonal to the direction in which the positive ion generation unit 220 and the negative ion generation unit 230 are arranged in the cross section of the second duct 218. By disposing, the generated negative ions can be suppressed from being absorbed by the wall portion of the second duct 218, and the ion emission efficiency can be improved.

  Also in the ion generator 200 of the present embodiment, when the discharge electrode deteriorates with the passage of usage time, the electrode block 59 can be easily removed from the power supply circuit unit 211 and replaced. Further, when the power supply circuit unit 211 is deteriorated, the power supply circuit unit 211 can be removed from the control unit 212 and easily replaced.

  Hereinafter, the ion generator which concerns on the 1st modification of Embodiment 2 of this invention is demonstrated. The ion generator according to the first modification differs from the ion generator according to Embodiment 2 only in that the first induction electrode and the second induction electrode are plate electrodes.

  FIG. 13: is a perspective view which shows the structure of the ion generator which concerns on the 1st modification of Embodiment 2 of this invention. As shown in FIG. 13, in the ion generator according to the first modification of the second embodiment, 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 250 and the second induction electrode 260 are first needle-like electrodes as in the second embodiment. The electric field strength between the discharge electrode 240 and the first induction electrode 450 and the electric field strength between the second induction electrode 460 and the second discharge electrode 270 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.

  Hereinafter, the ion generator which concerns on the 2nd modification of Embodiment 2 of this invention is demonstrated. The ion generator according to the second modification differs from the ion generator according to Embodiment 2 only in that the first induction electrode and the second induction electrode are one common flat plate electrode.

  FIG. 14 is a perspective view showing a configuration of an ion generator according to a second modification of Embodiment 2 of the present invention. 15 is a cross-sectional view seen from the direction of the arrow XV-XV in FIG. 16 is a cross-sectional view as seen from the direction of the arrow XVI-XVI in FIG.

  As shown in FIG. 14, in the ion generator according to the second modification of the second embodiment, the frame 51 of the electrode block 59 has an integral bulge in which the second bulge and the third bulge are integrated. A protruding portion 555 is included. Correspondingly, the first opening and the second opening of the first duct 217 and the second duct 218 are integrally formed as one common integrated opening 517a.

  As shown in FIGS. 15 and 16, a flat plate-shaped 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 240 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 270. Can be generated.

  In the second modification of the second 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 first modification of the second embodiment. Moreover, the number of parts can be reduced by sharing the induction electrode.

  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. 17 is a plan view showing a configuration of an ion generator according to a reference example. FIG. 18 is a plan view showing a configuration of an ion generator according to a comparative example. FIG. 19 is a plan view showing a configuration of an ion generation unit according to a comparative example. FIG. 20 is a view of the ion generation part of FIG. 19 as viewed from the arrow XVI.

  As shown in FIGS. 17 and 18, 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. 17, in the reference example, an interval of 20 mm is placed between the first duct 217 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 217. The second duct 218 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 217 and the outer wall of the second duct 218 that are positioned opposite to each other and facing each other was 245 mm.

  A needle-like first discharge electrode 240 projecting 11.5 mm from the inner wall of the first duct 217 opposite to the second duct 218 side was provided. A first induction electrode 250 projecting 11.5 mm was provided so as to face the first discharge electrode 240 from the inner wall of the first duct 217 on the second duct 218 side. The distance between the tip of the first discharge electrode 240 and the tip of the first induction electrode 250 was 80 mm.

  A needle-like second induction electrode 260 projecting 11.5 mm was provided so as to face the second discharge electrode 270 from the inner wall of the second duct 218 on the first duct 217 side. A second discharge electrode 270 that protrudes 11.5 mm from the inner wall of the second duct 218 opposite to the first duct 217 side is provided. The distance between the tip of the second induction electrode 260 and the tip of the second discharge electrode 270 was 80 mm.

  In order to bring the conditions closer to those of the ion generation unit 800 of the comparative example, the first discharge electrode 240 and the first induction electrode 250 are biased to one side in the width direction of the first duct 217 as shown in FIG. . Specifically, the first discharge electrode 240 and the first discharge electrode 240 are arranged so that the central axes of the first discharge electrode 240 and the first induction electrode 250 are located at a position 17 mm from the inner wall on one side in the width direction of the first duct 217. One induction electrode 250 was arranged.

  Similarly, the second induction electrode 260 and the second discharge electrode 270 are located biased to one side in the width direction of the second duct 218. Specifically, the second induction electrode 260 and the second induction electrode 260 and the second discharge electrode 270 are positioned so that the central axes of the second induction electrode 260 and the second discharge electrode 270 are located at a position 17 mm from the inner wall on one side in the width direction of the second duct 218. Two discharge electrodes 270 were arranged.

  As shown in FIGS. 18 to 20, 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 in 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. 21 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. 22 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. 23 is a graph showing a 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. 24 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. 25 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. 26 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. 27 is a graph showing the negative ion concentration distribution measured at a position 250 mm away from the electrode above the duct in the comparative example. FIG. 28 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.

  21 to 28, 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. 21, a high concentration region of positive ions exists on the first discharge electrode 240 side on the first duct 217 at a position 250 mm away from the electrode in the reference example. As shown in FIG. 23, a high concentration region of negative ions exists on the second discharge electrode 270 side on the second duct 218 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. 22, 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. 24, 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. 25, in the comparative example, at a position away from the electrode by 250 mm, positive ions are diffused radially from the center of the duct 910 in the length direction and from the vicinity of the inner wall on one side in the width direction. Yes. As shown in FIG. 27, 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. 26, in the comparative example, positive ions are diffused radially from substantially the center of the duct 910 at a position 1 m away from the electrode. As shown in FIG. 28, in the comparative example, negative ions are diffused radially from substantially the center of the duct 910 at a position 1 m away from the electrode. 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 summarizes 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 in the 35 measurement points in the comparative example and the reference example.

  As shown in Table 1, the maximum positive ion amount in the comparative example was 4.2 nA, the maximum negative ion amount was 3.9 nA, and the integrated ion amount at 35 measurement points was 39.9 nA.

  The maximum positive ion amount in the reference example is 5.4 nA, 129% of the comparative example, the maximum negative ion amount is 5.1 nA, 131% of the comparative example, and the integrated value of the ion amount at 35 measurement points is 94.1 nA. And 236% of the comparative example.

  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.

  11, 211 Power supply circuit unit, 11a first terminal, 11b second terminal, 12, 212 control unit, 12a, 12b guide unit, 13, 18, 19 diode, 14 resistor, 15 capacitor, 16 2-terminal thyristor, 17 step-up transformer , 30 motor, 40, 41 impeller, 50, 59 electrode block, 51 frame, 52 gap, 53 main body, 54 first bulge, 55 second bulge, 56 third bulge, 57 first 4 bulging sections, 58 gripping sections, 90 cords, 100, 200 ion generator, 110 casing, 111 upper casing, 112 lower casing, 112a, 112b inlet, 113, 114 outlet cylinder, 113a, 114a outlet 115,116 Protective net, 117,217 First duct, 118,218 Second duct, 117a, 217a First opening, 17b, 121, 131 Aperture, 120, 220 Positive ion generator, 130, 230 Negative ion generator, 132, 152 Third connector, 140, 240, 810 First discharge electrode, 141 First discharge electrode substrate, 150, 250 , 450, 830 First induction electrode, 151 Induction electrode substrate, 153 Third terminal, 154 Adhesive, 160, 260, 460, 840 Second induction electrode, 170, 270, 820 Second discharge electrode, 171 Second discharge electrode Board, 184 first connector, 185 lead, 187 second connector, 211a insertion port, 218a second opening, 290 connector, 517a integral opening, 550 integral induction electrode, 555 integral bulge, 800 ion generator, 850 power supply circuit Part, 900 common duct, 910 duct.

Claims (8)

A blower mechanism;
Constituting a flow path through which a part of the gas blown by the blowing mechanism flows, and a duct having an opening on the side wall;
An electrode block including an ion generator and detachably attached to the duct;
The ion generation unit has a needle-like discharge electrode to which a positive voltage or a negative voltage is applied and an induction electrode facing the discharge electrode,
In a state where the electrode block is mounted on the duct, the ion generating portion is inserted through the opening, the discharge electrode and the induction electrode are positioned to face each other in the flow path, and the An ion generator in which the opening is closed by the electrode block.   The ion generator according to claim 1, further comprising a power supply circuit unit connected to the electrode block and applying a positive voltage or a negative voltage to the discharge electrode.   The ion generator according to claim 2, wherein the power supply circuit unit is detachably attached to the duct.   The ion generator according to claim 2, wherein the power supply circuit unit has a guide portion when the electrode block is attached to the duct. 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 is applied with a positive voltage, and a first induction electrode that is the induction electrode and faces the first discharge electrode;
The negative ion generator has a second discharge electrode that is the discharge electrode and is applied with a negative voltage, and a second induction electrode that is the induction electrode and faces the second discharge electrode,
In a state in which the electrode block is mounted on the first duct and the second duct, the positive ion generating part is inserted through the first opening, and the first discharge electrode and the first induction electrode are connected to the first duct. The negative ion generator is inserted into the second opening, the second discharge electrode and the second induction electrode are located in the second flow path, and The ion generator according to any one of claims 1 to 4, wherein the first opening and the second opening are closed by the electrode block. The first discharge electrode and the first induction electrode are located away from each other at both ends of the cross section of the first flow path;
The ion generator according to claim 5, wherein the second discharge electrode and the second induction electrode are located apart from each other at both ends in a cross section of the second flow path.   The ion generator according to claim 5 or 6, 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 5, wherein the electrode block has a predetermined gap between the positive ion generator and the negative ion generator.

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