JP2013254587A - Ion generator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mix positive ions and negative ions in a wide range of a space at high density.SOLUTION: The ion generator comprises: a ventilation mechanism 190; an upright duct 110 extending in an upward and downward direction, and constituting a flow passage in which gas blown by the ventilation mechanism 190 rises; at least three blow ducts provided parallely to the upright duct 110 in the upward and downward direction, and having a flow passage communicated with the flow passage; and ion generation sections respectively provided to at least the three blow ducts of all blow ducts and generating ions. An upper blow duct 120a positioned at an uppermost part among the blow ducts provided with the ion generation sections, and a lower blow duct 120b positioned at a lowermost part blow positive ions. Also, intermediate blow ducts 130a, 130b positioned between an upper blow duct 120a and a lower blow duct 120b of the blow ducts provided with the ion generation sections blow negative ions.

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. 2008-91146 (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 positive ion transport duct, a negative ion transport duct, a blower fan, and an air outlet. In each ion transport duct, a discharge needle is provided at a substantially central portion in the longitudinal direction. A DC high voltage power source is connected to the discharge needle through a high voltage electric wire, and positive and negative high voltages are applied from the DC high voltage power source. Positive ions are generated from the discharge needle to which a positive high voltage is applied, and negative ions are generated from the discharge needle to which a negative high voltage is applied.

  The outlet of each ion carrying duct is connected to the blower outlet. For this reason, positive ions and negative ions blown out from the outlet of each ion transport duct are mixed at the outlet and blown out from the outlet.

JP 2008-91146 A

  The positive ions and negative ions mixed at the outlet are bonded to each other and disappear. For this reason, the number of ions blown out from the outlet is rapidly reduced, and a sufficient number of ions cannot be supplied to a position away from the ion generator.

  Also, since negative ions are more diffusive than positive ions, if positive ions and negative ions are blown out in the same way, negative ions diffuse and dilute to the surroundings, resulting in a low density of negative ions and positive ions. Become.

  This invention is made | formed in view of said problem, Comprising: It aims at providing the ion generator which can mix a positive ion and a negative ion with high density in a wide space.

  An ion generator according to the present invention is arranged in parallel in a vertical direction with respect to a ventilation mechanism, a standing duct that extends in the vertical direction and forms a flow path in which gas blown by the ventilation mechanism rises, and a vertical duct. And at least three blowing ducts having flow paths communicating with the flow paths, and an ion generating section that is provided in at least three blowing ducts among all the blowing ducts and generates ions. Among the blowout ducts provided with the ion generation part, the upper blowout duct located at the uppermost part and the lower blowout duct located at the lowermost part blow out positive ions, and among the blowout ducts provided with the ion generation part The intermediate blow duct located between the upper blow duct and the lower blow duct of the blow out negative ions.

  In one form of this invention, an upper blowing duct blows off gas at a larger flow velocity than an intermediate blowing duct.

  In one form of this invention, a lower blowing duct blows off gas at a larger flow velocity than an intermediate blowing duct.

  In one form of the present invention, the central axis of the upper blowing duct intersects the central axis of the lower blowing duct in plan view.

  In one form of this invention, the center axis | shaft of each blowing duct cross | intersects at the angle of 0 degree or more and 45 degrees or less with respect to the front surface where the blowing duct of the standing duct is arranged in parallel in planar view.

  In one form of this invention, the angle which the center axis | shafts of each blowing duct make in planar view is 5 degrees or more and 30 degrees or less.

In one form of the present invention, the elevation angle of the central axis of each outlet duct is 45 ° or less.
In one form of this invention, an ion generator has a some standing duct each provided with the blowing duct.

  In one form of this invention, the shortest distance in the horizontal direction of the blowing duct each provided in the standing duct adjacent to each other among several standing ducts is 100 mm or more.

  According to the present invention, positive ions and negative ions can be mixed at a high density in a wide space.

It is a side view which shows the structure of the ion generator which concerns on Embodiment 1 of this invention. It is the figure which looked at the ion generator of FIG. 1 from the direction of arrow II. It is a circuit diagram which shows the structure of the ion generation circuit part contained in the ion generator which concerns on the same embodiment. It is a top view which shows the state which adjusted the angle of the upper blowing duct. It is a top view which shows the state which adjusted the angle of the 1st intermediate | middle blowing duct. It is a top view which shows the state which adjusted the angle of the 2nd intermediate | middle blowing duct. It is a top view which shows the state which adjusted the angle of the lower blowing duct. It is a side view which shows the diffusion state of the gas discharge | released from the ion generator which concerns on the same embodiment. It is a top view which shows the diffusion state of the gas discharge | released from the ion generator which concerns on the same embodiment. It is a front view which shows the structure of the blowing duct provided with the louver. It is the top view which looked at the blowing duct of FIG. 10 from the arrow XI direction. It is a front view which shows the structure of the ion generator which concerns on Embodiment 2 of this invention. It is a front view which shows the structure of the ion generator which concerns on Embodiment 3 of this invention. 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. 16 from arrow XVII. 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 side view showing a configuration of an ion generator according to Embodiment 1 of the present invention. FIG. 2 is a view of the ion generator of FIG. 1 as viewed from the direction of arrow II. FIG. 3 is a circuit diagram illustrating a configuration of an ion generation circuit unit included in the ion generation apparatus according to the present embodiment.

  As shown in FIGS. 1 and 2, the ion generator 100 according to the present embodiment has a blower mechanism 190. The air blowing mechanism 190 is configured by a fan or the like. The air blowing mechanism 190 blows air from below to above.

  The ion generator 100 has a standing duct 110 above the blower mechanism 190. The standing duct 110 is formed of a cylindrical member having a substantially rectangular parallelepiped outer shape and having an opening at the lower end. The standing duct 110 extends in the vertical direction and forms a flow path in which a gas such as air blown by the blower mechanism 190 rises. Yes.

In the present embodiment, the standing duct 110 has four flow paths adjacent to each other inside. In order from the left side in FIG. 1, the widths of the flow paths are L ₁ , L ₂ , L ₃ , L ₄ , and L ₁ > L ₄ > L ₂ , L ₃ . In addition, the number of the flow paths in the standing duct 110 is not limited to four, and may be three or more.

  The ion generator 100 has four outlet ducts arranged in parallel in the vertical direction in front of the standing duct 110. Specifically, among the blowout ducts provided with ion generating portions described later, the upper blowout duct 120a located at the uppermost part, the lower blowout duct 120b located at the lowermost part, the upper blowout duct 120a and the lower blowout duct 120b. Are provided with a first intermediate outlet duct 130a and a second intermediate outlet duct 130b, which are intermediate outlet ducts. The first intermediate outlet duct 130a is located above the second intermediate outlet duct 130b.

  Each of the upper outlet duct 120a, the first intermediate outlet duct 130a, the second intermediate outlet duct 130b, and the lower outlet duct 120b is formed of a cylindrical member having a rectangular parallelepiped outer shape and having both ends opened.

Top discharge duct 120a has a channel 121a through the flow path and communicates a width L ₁ in upright duct 110. The end of the upper outlet duct 120a opposite to the standing duct 110 side serves as an outlet for a part 191 of the gas blown by the blower mechanism 190.

The first intermediate air duct 130a has a channel 131a through the flow path and communicating the width L ₂ in upright duct 110. The end of the first intermediate outlet duct 130a opposite to the standing duct 110 side serves as a blowout port for a part 192 of the gas blown by the blower mechanism 190.

The second intermediate air duct 130b has a flow path 131b through the flow path and communicating the width L ₃ of the upright duct 110. The end of the second intermediate blow-out duct 130b on the side opposite to the standing duct 110 side is a blow-out opening for a part 193 of the gas blown by the blower mechanism 190.

Lower air duct 120b has a flow path 121b through the flow path and communicating the width L ₄ of the upright duct 110. An end of the lower outlet duct 120b opposite to the standing duct 110 side serves as an outlet for a part 194 of the gas blown by the blower mechanism 190.

  As shown in FIGS. 2 and 3, the ion generation apparatus 100 includes two ion generation circuit units 10. The ion generation circuit unit 10 includes a first discharge electrode 140, a first induction electrode 150, a second induction electrode 160, and a second discharge electrode 170. The ion generation circuit unit 10 does not necessarily include the first induction electrode 150 and the second induction electrode 160. That is, the first discharge electrode 140 can be discharged alone, and the second discharge electrode 170 can be discharged.

  In the ion generation circuit unit 10 located above the two ion generation circuit units 10, the first discharge electrode 140 projects from the inner wall of the upper blowing duct 120a opposite to the first intermediate blowing duct 130a side, and is positive voltage. Applied. The first induction electrode 150 protrudes from the inner wall of the upper outlet duct 120a on the first intermediate outlet duct 130a side so as to face the first discharge electrode 140. The first discharge electrode 140 and the first induction electrode 150 constitute a positive ion generator.

  The second induction electrode 160 protrudes from the inner wall of the first intermediate blowing duct 130a on the upper blowing duct 120a side so as to face the second discharge electrode 170. The second discharge electrode 170 protrudes from the inner wall of the first intermediate blowing duct 130a opposite to the upper blowing duct 120a side and is applied with a negative voltage. The second induction electrode 160 and the second discharge electrode 170 constitute a negative ion generator.

  In the ion generation circuit unit 10 positioned below the two ion generation circuit units 10, the second discharge electrode 170 projects from the inner wall of the second intermediate blowing duct 130b on the first intermediate blowing duct 130a side and applies a negative voltage. Is done. The second induction electrode 160 protrudes from the inner wall of the second intermediate outlet duct 130b on the lower outlet duct 120b side so as to face the second discharge electrode 170. The second induction electrode 160 and the second discharge electrode 170 constitute a negative ion generator.

  The first induction electrode 150 protrudes from the inner wall of the lower outlet duct 120b on the second intermediate outlet duct 130b side so as to face the first discharge electrode 140. The first discharge electrode 140 protrudes from the inner wall of the lower outlet duct 120b opposite to the second intermediate outlet duct 130b and is applied with a positive voltage. The first discharge electrode 140 and the first induction electrode 150 constitute a positive ion generator.

  In this embodiment, each of all the blowout ducts is provided with an ion generation unit, but it is sufficient that at least three blowout ducts are provided with an ion generation unit. For example, an ion generating part does not need to be provided in one blowing duct among four blowing ducts.

  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. As a result, ions can be generated efficiently. 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. Further, the first induction electrode 150 and the second induction electrode 160 may be flat plate electrodes.

  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 upper outlet duct 120a existing near the first induction electrode 150 and the first discharge electrode 140, and the efficiency of ion generation may be reduced.

  The ion generation circuit unit 10 includes a power supply 180 that applies a high voltage. The first discharge electrode 140 is connected to the power source 180 via a conducting wire 184. The first induction electrode 150 and the second induction electrode 160 are connected to a power source 180 via a conducting wire 185. The second discharge electrode 170 is connected to the power source 180 via a conducting wire 187.

  In the present embodiment, the first induction electrode 150 and the second induction electrode 160 are connected to the conducting wire 185 and have the same potential.

  As shown in FIG. 3, the ion generation circuit unit 10 includes an electrode control unit 11. In FIG. 2, the electrode controller 11 is not shown for simplicity. The electrode control unit 11 is connected between the power source 180 and the conductive wires 184, 185, 187.

  The electrode control unit 11 has a step-up transformer 17. The electrode control 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 180. The other end on the primary side of the step-up transformer 17 is connected to the power source 180.

  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 source 180, 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. The shape of the electrode is not limited to a needle shape, and may be a ring shape or a flat plate shape.

  As shown in FIGS. 1 and 2, positive ions generated between the first discharge electrode 140 and the first induction electrode 150 are released from the upper outlet duct 120a by a part 191 of the gas blown by the blower mechanism 190. The

  Negative ions generated between the second induction electrode 160 and the second discharge electrode 170 are released from the first intermediate blowing duct 130a by a part 192 of the gas blown by the blowing mechanism 190.

  Negative ions generated between the second induction electrode 160 and the second discharge electrode 170 are released from the second intermediate blowing duct 130b by a part 193 of the gas blown by the blowing mechanism 190.

  Positive ions generated between the first discharge electrode 140 and the first induction electrode 150 are released from the lower blowing duct 120b by a part 194 of the gas blown by the blowing mechanism 190.

In this embodiment, each blowing duct blows out gas at a flow rate different from each other. As described above, the upper air duct 120a communicates flow path and communicating the width L ₁ in upright duct 110, first intermediate air duct 130a communicates flow path and communicating the width L ₂ in upright duct 110, the second intermediate air duct 130b communicates flow path and communicating the width L ₃ of the upright duct 110, the lower air duct 120b is in fluid flow path and communicating the width L ₄ of the upright duct 110. Each width has a relationship of L ₁ > L ₄ > L ₂ , L ₃ .

  A large amount of gas blown from the blower mechanism 190 flows in the flow passage having a large flow passage area. In addition, a large amount flows in the flow path located on the end side by the centrifugal force of the blower mechanism 190. Therefore, compared with the 1st intermediate | middle blowing duct 130a and the 2nd intermediate | middle blowing duct 130b, many gas flows into the upper blowing duct 120a and the lower blowing duct 120b. As a result, the upper blowout duct 120a and the lower blowout duct 120b blow out gas at a larger flow rate than the first intermediate blowout duct 130a and the second intermediate blowout duct 130b.

  In addition, each blowing duct can be independently adjusted in the gas blowing direction. In the present embodiment, each outlet duct is provided so that the angle can be adjusted flexibly with respect to the standing duct 110, but each outlet duct may be fixed to the standing duct 110.

  FIG. 4 is a plan view showing a state in which the angle of the upper outlet duct is adjusted. FIG. 5 is a plan view showing a state in which the angle of the first intermediate outlet duct is adjusted. FIG. 6 is a plan view showing a state in which the angle of the second intermediate outlet duct is adjusted. FIG. 7 is a plan view showing a state in which the angle of the lower outlet duct is adjusted.

  As shown in FIG. 4, the central axis of the upper outlet duct 120a intersects the left side in FIG. Therefore, gas 120ag containing positive ions is blown out in the direction indicated by the arrow.

  As shown in FIG. 5, the central axis of the first intermediate outlet duct 130a intersects the left side in FIG. Therefore, gas 130ag containing negative ions is blown out in the direction indicated by the arrow.

  As shown in FIG. 6, the central axis of the second intermediate outlet duct 130b intersects the right side in FIG. Therefore, gas 130bg containing negative ions is blown out in the direction indicated by the arrow.

  As shown in FIG. 7, the central axis of the lower outlet duct 120 b intersects the right side in FIG. 7 at an angle of β ° with respect to the front surface of the standing duct 110 in plan view. Therefore, gas 120ag containing positive ions is blown out in the direction indicated by the arrow.

  As described above, the central axis of the upper outlet duct 120a intersects the central axis of the lower outlet duct 120b in plan view. Further, in plan view, the central axis of the first intermediate outlet duct 130a intersects with the central axis of the second intermediate outlet duct 130b.

  The angle α ° and the angle β ° satisfy the relationship of 0 ° ≦ α ° ≦ β ° ≦ 45 °. That is, in plan view, the central axis of each outlet duct intersects with the front face of the standing duct 110 at an angle of 0 ° to 45 °. Further, in a plan view, the angle formed by the central axes of the outlet ducts is not less than 5 ° and not more than 30 °.

  As shown in FIG. 1, the central axes of the upper outlet duct 120a, the first intermediate outlet duct 130a, the second intermediate outlet duct 130b, and the lower outlet duct 120b intersect at an angle of γ ° with respect to the horizontal direction. The angle γ ° satisfies the relationship 0 ° ≦ γ ° ≦ 45 °. That is, the elevation angle of the central axis of each blowing duct is 0 ° or more and 45 ° or less. In the present embodiment, the elevation angles of the central axes of the outlet ducts are all the same, but may be different from each other.

  FIG. 8 is a side view showing the diffusion state of the gas released from the ion generator according to the present embodiment. FIG. 9 is a plan view showing a diffusion state of gas emitted from the ion generator according to the present embodiment.

  As shown in FIG. 8, the negative ions diffusion region is substantially positively blown into the indoor space 900 by blowing out the gases 120 ag and 120 bg containing positive ions so as to sandwich the gases 130 ag and 130 bg containing negative ions from above and below. It can be included in the diffusion region of ions. Therefore, positive ions and negative ions can be mixed in the positive ion diffusion region.

  Further, by increasing the flow rates of the gases 120ag and 120bg containing positive ions to the flow rates of the gases 130ag and 130bg containing negative ions, the diffusion rate of positive ions and the diffusion rate of negative ions are made closer to each other in the indoor space 900. About the same amount of positive ions and negative ions can be supplied to a position away from the ion generator 100.

  In particular, it is preferable that the flow rate of the gas blown out from the upper blowing duct 120a is larger than the flow velocity of the gas blown out from the first intermediate blowing duct 130a, the second intermediate blowing duct 130b, and the lower blowing duct 120b. In this case, since the gas 120ag containing positive ions can be sent to the circulation path outside the long circulation path of the gas in the indoor space 900, positive ions are supplied to every corner of the indoor space 900 to widen the wide area of the indoor space 900. In FIG. 5, positive ions and negative ions can be mixed.

  As shown in FIG. 9, the positive ions and the negative ions are combined and disappeared immediately after the discharge by making the blowing directions of the gases 120 ag and 120 bg containing the positive ions and the gases 130 ag and 130 bg containing the negative ions different from each other. Thus, positive ions and negative ions can be supplied over a wide area in the indoor space 900.

  As in the present embodiment, by alternately blowing a gas containing positive ions and a gas containing negative ions in a plan view, positive ions and negative ions are more uniform in the ion diffusion region 901 shown in FIG. Can be mixed.

  In addition, when providing five or more blowing ducts, in a plan view, positive ions are blown out on the outermost side, and negative ions and positive ions are alternately blown out on the inner side. Almost all of the diffusion region can be included in the diffusion region of positive ions. In this case, positive ions and negative ions can be mixed more uniformly in the positive ion diffusion region.

  In the ion generator 100 of the present embodiment, positive ions and negative ions are discharged through the separate flow paths 121a, 131a, 121b, and 131b, respectively, so that the upper blowing duct 120a and the first intermediate blowing duct 130a are discharged. The number of ions that disappear in the second intermediate blowing duct 130b and the lower blowing duct 120b can be reduced.

  Further, immediately after the release of ions, the high concentration region of positive ions is located at the upper part of the upper blowing duct 120a and the lower part of the lower blowing duct 120b, and the high concentration region of the negative ions 30 is located in the first intermediate blowing duct 130a. It is located in the lower part and the upper part of the 2nd intermediate | middle blowing duct 130b, and each high concentration area | region is located separately. Therefore, it can suppress that a positive ion and a negative ion couple | bond and extinguish immediately after discharge | release.

  In this way, positive ions and negative ions are discharged from separate ducts, and discharge electrodes to which a high voltage of reverse polarity is applied are arranged apart from each other, so that the inside of the duct and the vicinity of the outlet It is possible to reduce the number of ions annihilated and supply a high concentration of ions in a wide space.

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 present embodiment, the central axis of each blowing duct intersects with the front face of the standing duct 110 at an angle of 0 ° to 45 ° in plan view. When this crossing angle is larger than 45 °, there is a high possibility that the amount of ions supplied to the indoor space 900 other than the main living space increases and ions cannot be effectively used. In a plan view, the effective utilization rate of ions can be improved by intersecting the central axis of each outlet duct with an angle of 0 ° or more and 45 ° or less with respect to the front surface of the upright duct 110.

  Moreover, in plan view, by making the angle formed between the central axes of the blowout ducts be 5 ° or more and 30 ° or less, it is possible to suppress the binding and disappearance of positive ions and negative ions immediately after release. . When this angle is larger than 30 °, positive ions and negative ions are located apart from each other, and as described above, fungi or viruses floating in the air due to the combination of positive ions and negative ions. Effects such as decomposition, odor removal, and dust collection may not be obtained sufficiently.

  Further, by setting the elevation angle of the central axis of each blowout duct to 45 ° or less, ions can be supplied to a position away from the ion generator 100 in the indoor space 900. When the elevation angle is greater than 45 °, the forward force of the gases 120ag and 120bg containing positive ions and the gases 130ag and 130bg containing negative ions decreases, and ions are generated up to the end of the indoor space 900 on the side opposite to the ion generator 100 side. It becomes difficult to supply.

  In the ion generator 100, in order to finely adjust the angle at which the gases 120ag and 120bg containing positive ions and the gases 130ag and 130bg containing negative ions are blown, a louver may be provided in each blowing duct.

  FIG. 10 is a front view showing the configuration of the blowout duct provided with the louver. FIG. 11 is a plan view of the outlet duct of FIG. 10 as viewed from the direction of arrow XI.

  As shown in FIGS. 10 and 11, a tubular louver 400 having a rectangular parallelepiped outer shape and having both ends opened is disposed in each outlet duct. The louver 400 is rotatably attached to a rotating shaft 410 fixed to the blowing duct. By providing such a louver 400, the blowing directions of the gases 120ag and 120bg containing positive ions and the gases 130ag and 130bg containing negative ions can be finely adjusted in the left-right direction. The louver 400 may be attached so as to be rotatable in the vertical direction.

  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 different from the ion generator 100 of the first embodiment only in that it has a twin tower structure in which two standing ducts are provided. Therefore, the description of other configurations will not be repeated. .

(Embodiment 2)
FIG. 12 is a front view showing the configuration of the ion generator according to Embodiment 2 of the present invention. As shown in FIG. 12, the ion generator 200 according to Embodiment 2 of the present invention has a blower mechanism 190.

  The ion generator 100 has a common duct 210 above the blower mechanism 190. The common duct 210 has a substantially rectangular parallelepiped outer shape and is formed of a cylindrical member having openings at both ends. The common duct 210 extends in the vertical direction and forms a flow path in which a gas such as air blown by the blower mechanism 190 rises. Yes.

  The ion generator 100 has standing ducts 211 and 212 that are positioned above the common duct 210 and spaced from each other. The standing ducts 211 and 212 are formed of a cylindrical member having a substantially rectangular parallelepiped outer shape and opened at the lower end, and constitute a flow path in which a gas such as air blown by the blower mechanism 190 rises in the vertical direction and rises. doing.

  The ion generator 200 has four outlet ducts arranged in the vertical direction in front of the standing ducts 211 and 212. Specifically, an upper outlet duct 220a located at the uppermost part, a lower outlet duct 220b located at the lowermost part, and a first intermediate outlet duct that is an intermediate outlet duct located between the upper outlet duct 220a and the lower outlet duct 220b. 230a and a second intermediate outlet duct 230b are provided. The first intermediate outlet duct 230a is located above the second intermediate outlet duct 230b.

  Each of the upper blowout duct 220a, the first intermediate blowout duct 230a, the second intermediate blowout duct 230b, and the lower blowout duct 220b is formed of a cylindrical member having a rectangular parallelepiped outer shape and open at both ends.

  The ion generator 200 includes two ion generation circuit units in each of the standing ducts 211 and 212. The ion generation circuit unit includes a first discharge electrode 240, a first induction electrode 250, a second induction electrode 260 and a second discharge electrode 270.

  In the ion generation circuit unit located above the two ion generation circuit units, the first discharge electrode 240 projects a positive voltage by protruding from the inner wall of the upper discharge duct 220a opposite to the first intermediate discharge duct 230a side. Is done. The first induction electrode 250 protrudes from the inner wall of the upper outlet duct 220a on the first intermediate outlet duct 230a side so as to face the first discharge electrode 240.

  The second induction electrode 260 protrudes from the inner wall of the first intermediate outlet duct 230a on the upper outlet duct 220a side so as to face the second discharge electrode 270. The second discharge electrode 270 protrudes from the inner wall of the first intermediate outlet duct 230a opposite to the upper outlet duct 220a and is applied with a negative voltage.

  In the ion generation circuit unit positioned below the two ion generation circuit units, the second discharge electrode 270 protrudes from the inner wall of the second intermediate blowing duct 230b on the first intermediate blowing duct 230a side and is applied with a negative voltage. . The second induction electrode 260 protrudes from the inner wall of the second intermediate outlet duct 230b on the lower outlet duct 220b side so as to face the second discharge electrode 270.

  The first induction electrode 250 protrudes from the inner wall of the lower outlet duct 220b on the second intermediate outlet duct 230b side so as to face the first discharge electrode 240. The first discharge electrode 240 protrudes from the inner wall of the lower outlet duct 220b opposite to the second intermediate outlet duct 230b and is applied with a positive voltage.

  The ion generation circuit unit includes a power source 280 that applies a high voltage. The first discharge electrode 240 is connected to the power source 280 via the conducting wire 284. The first induction electrode 250 and the second induction electrode 260 are connected to a power source 280 via a conducting wire 285. The second discharge electrode 270 is connected to the power source 280 through the conducting wire 287.

  In the present embodiment, the first induction electrode 250 and the second induction electrode 260 are connected to the conducting wire 285 and have the same potential.

  Also in the present embodiment, positive ions and negative ions are discharged from separate ducts, and discharge electrodes to which a high voltage of reverse polarity is applied are arranged apart from each other, so that the inside of the duct and the air outlet are provided. It is possible to reduce the number of ions annihilated in the vicinity of and to supply high-concentration ions in a wide space.

  In addition, by blowing a gas containing positive ions into the indoor space so as to sandwich a gas containing negative ions from above and below, the negative ion diffusion region can be included in the positive ion diffusion region. Therefore, positive ions and negative ions can be mixed in the positive ion diffusion region.

  In addition, when providing several standing ducts, the shortest distance in the horizontal direction of the blowing ducts each provided in the standing ducts 211 and 212 adjacent to each other among several standing ducts is 100 mm or more. It is preferable.

As shown in FIG. 12, the distance between the top discharge duct 220a provided in the upper air duct 220a and upright duct 212 provided in the upright duct 211 and P _1. Let P ₂ be the distance between the first intermediate outlet duct 230a provided in the standing duct 211 and the first intermediate outlet duct 230a provided in the standing duct 212.

Let P ₃ be the distance between the second intermediate outlet duct 230b provided in the standing duct 211 and the second intermediate outlet duct 230b provided in the standing duct 212. The distance between the lower air duct 220b provided in the lower air duct 220b and upright duct 212 provided in the upright duct 211 and P _4. In the present embodiment, P ₁ = P ₂ = P ₃ = P ₄ = 130 mm.

  The gas blown out from the blowing ducts whose distance in the horizontal direction is shorter than 100 mm flows so as to gather together. As a result, the diffusion of ions in the horizontal direction may be suppressed, making it impossible to supply ions over a wide range. Therefore, it is preferable to secure a distance of 100 mm or more between adjacent blowing ducts.

  In addition, when the blowing direction of each blowing duct differs, it is preferable that the shortest distance of the mutually opposing surfaces of the front-end | tip part of two blowing ducts shall be 100 mm or more.

  In the present embodiment, four blowing ducts are arranged per one standing duct, but the present invention is not limited to this, and it is sufficient that three or more blowing ducts are arranged per one standing duct.

  Hereinafter, an ion generator according to Embodiment 3 of the present invention will be described. The ion generator 300 according to the present embodiment is different from the ion generator 100 of the first embodiment only in that it has a triple tower structure in which three standing ducts are provided. Therefore, description of other configurations will not be repeated. .

(Embodiment 3)
FIG. 13 is a front view showing a configuration of an ion generator according to Embodiment 3 of the present invention. As shown in FIG. 13, the ion generator 300 according to Embodiment 3 of the present invention has a blower mechanism 190.

  The ion generator 300 has a common duct 310 above the blower mechanism 190. The common duct 310 has a substantially rectangular parallelepiped outer shape and is formed of a cylindrical member having openings at both ends. The common duct 310 extends in the vertical direction and forms a flow path in which gas such as air blown by the blower mechanism 190 rises. Yes.

  The ion generator 300 has standing ducts 311, 312, and 313 located above the common duct 310 and spaced from each other. The standing ducts 311, 312, and 313 are formed of a cylindrical member having a substantially rectangular parallelepiped outer shape and opened at the lower end, and extend in the vertical direction so that a gas such as air blown by the blowing mechanism 190 rises. Is configured.

  The ion generator 300 has four blowing ducts arranged in parallel in the vertical direction in front of the standing ducts 311, 312, and 313. Specifically, an upper outlet duct 320a located at the uppermost part, a lower outlet duct 320b located at the lowermost part, and a first intermediate outlet duct that is an intermediate outlet duct located between the upper outlet duct 320a and the lower outlet duct 320b. 330a and a second intermediate outlet duct 330b are provided. The first intermediate outlet duct 330a is located above the second intermediate outlet duct 330b.

  Each of the upper blowout duct 320a, the first intermediate blowout duct 330a, the second intermediate blowout duct 330b, and the lower blowout duct 320b is formed of a cylindrical member having a rectangular parallelepiped outer shape and open at both ends.

  The ion generator 300 includes two ion generation circuit units in each of the standing ducts 311, 312, and 313. The ion generation circuit unit includes a first discharge electrode 340, a first induction electrode 350, a second induction electrode 360, and a second discharge electrode 370.

  In the ion generation circuit unit located above the two ion generation circuit units, the first discharge electrode 340 protrudes from the inner wall of the upper outlet duct 320a opposite to the first intermediate outlet duct 330a and applies a positive voltage. Is done. The first induction electrode 350 protrudes from the inner wall of the upper outlet duct 320a on the first intermediate outlet duct 330a side so as to face the first discharge electrode 340.

  The second induction electrode 360 protrudes from the inner wall of the first intermediate outlet duct 330a on the upper outlet duct 320a side so as to face the second discharge electrode 370. The second discharge electrode 370 protrudes from the inner wall of the first intermediate outlet duct 330a opposite to the upper outlet duct 320a and is applied with a negative voltage.

  In the ion generation circuit portion positioned below the two ion generation circuit portions, the second discharge electrode 370 protrudes from the inner wall of the second intermediate blowing duct 330b on the first intermediate blowing duct 330a side and is applied with a negative voltage. . The second induction electrode 360 protrudes from the inner wall of the second intermediate outlet duct 330b on the lower outlet duct 320b side so as to face the second discharge electrode 370.

  The first induction electrode 350 protrudes from the inner wall of the lower outlet duct 320b on the second intermediate outlet duct 330b side so as to face the first discharge electrode 340. The first discharge electrode 340 protrudes from the inner wall of the lower outlet duct 320b opposite to the second intermediate outlet duct 330b and is applied with a positive voltage.

  The ion generation circuit unit includes a power source 380 that applies a high voltage. The first discharge electrode 340 is connected to the power source 380 via a conducting wire 384. The first induction electrode 350 and the second induction electrode 360 are connected to the power source 380 via a conducting wire 385. The second discharge electrode 370 is connected to the power source 380 through a conducting wire 387.

  In the present embodiment, the first induction electrode 350 and the second induction electrode 360 are connected to the conducting wire 385 and have the same potential.

  Also in the present embodiment, positive ions and negative ions are discharged from separate ducts, and discharge electrodes to which a high voltage of reverse polarity is applied are arranged apart from each other, so that the inside of the duct and the air outlet are provided. It is possible to reduce the number of ions annihilated in the vicinity of and to supply high-concentration ions in a wide space.

  In addition, by blowing a gas containing positive ions into the indoor space so as to sandwich a gas containing negative ions from above and below, the negative ion diffusion region can be included in the positive ion diffusion region. Therefore, positive ions and negative ions can be mixed in the positive ion diffusion region.

  By blowing out ions in a direction perpendicular to the front from each blowing duct provided in the standing duct 312, and blowing out ions so as to spread outward from each blowing duct provided in the standing ducts 311 and 313, a wide range is obtained. Ions can be supplied to the space.

  In addition, when providing a some standing duct, the shortest distance in the horizontal direction of the blowing duct provided in the standing ducts 311, 312, and 313 adjacent to each other among the plurality of standing ducts is 100 mm or more. It is preferable that

As shown in FIG. 13, the distance between the top discharge duct 320a provided in the upper air duct 320a and upright duct 312 provided in the upright duct 311 and P _5. The distance between the first intermediate discharge duct 330a provided in the first intermediate air duct 330a and upright duct 312 provided in the upright duct 311 and P _6.

The distance between the second intermediate air duct 330b provided in the second intermediate air duct 330b and upright duct 312 provided in the upright duct 311 and P _7. The distance between the lower air duct 320b provided in the lower air duct 320b and upright duct 312 provided in the upright duct 311 and P _8.

Let P ₉ be the distance between the upper outlet duct 320a provided in the standing duct 312 and the upper outlet duct 320a provided in the standing duct 313. The distance between the first intermediate discharge duct 330a provided in the first intermediate air duct 330a and upright duct 313 provided in the upright duct 312 and P _10.

The distance between the second intermediate air duct 330b provided in the second intermediate air duct 330b and upright duct 313 provided in the upright duct 312 and P _11. The distance between the lower air duct 320b provided in the lower air duct 320b and upright duct 313 provided in the upright duct 312 and P _12. In the present embodiment, P ₅ = P ₆ = P ₇ = P ₈ = P ₉ = P ₁₀ = P ₁₁ = P ₁₂ = 130 mm.

  The gas blown out from the blowing ducts whose distance in the horizontal direction is shorter than 100 mm flows so as to gather together. As a result, the diffusion of ions in the horizontal direction may be suppressed, making it impossible to supply ions over a wide range. Therefore, it is preferable to secure a distance of 100 mm or more between adjacent blowing ducts.

  In the present embodiment, three standing ducts are arranged. However, the present invention is not limited to this, and it is sufficient that at least three standing ducts are arranged. In addition, although four blowing ducts are arranged per one standing duct, the present invention is not limited to this, and it is only necessary that three or more blowing ducts be arranged per one standing duct.

  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. 14 is a plan view showing a configuration of an ion generator according to a reference example. FIG. 15 is a plan view showing a configuration of an ion generator according to a comparative example. FIG. 16 is a plan view showing a configuration of an ion generation unit according to a comparative example. FIG. 17 is a view of the ion generation unit of FIG. 16 as viewed from the arrow XVII.

  As shown in FIGS. 14 and 15, air was blown into a common duct 910 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. 14, in the reference example, an interval of 20 mm is placed between the first duct 120 having a flow path having a length of 103 mm and a width of 34 mm in the upper center of the common duct 910 and the first duct 120. The second duct 130 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 120 and the outer wall of the second duct 130 that are located opposite to each other and opposite each other was 245 mm.

  A needle-like first discharge electrode 140 that protrudes 11.5 mm from the inner wall of the first duct 120 opposite to the second duct 130 is 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 120 on the second duct 130 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 130 on the first duct 120 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 130 opposite to the first duct 120 side 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 closer 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 toward one side in the width direction of the first duct 120 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 120. One induction electrode 150 was arranged.

  Similarly, the second induction electrode 160 and the second discharge electrode 170 are positioned so as to be biased to one side in the width direction of the second duct 130. Specifically, the second induction electrode 160 and the second induction electrode 160 are arranged so that the central axes of the second induction electrode 160 and the second discharge electrode 170 are located at a position of 17 mm from the inner wall on one side in the width direction of the second duct 130. Two discharge electrodes 170 were arranged.

  As shown in FIGS. 15 to 17, in the comparative example, a duct 920 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 910. Air was blown into the common duct 910 at a flow rate of 5 m / sec on the electrode by a cross flow fan (not shown). The ion generator 800 is disposed on the inner wall on one side in the width direction of the duct 920.

  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 such 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 920.

  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. 18 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. 19 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. 20 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. 21 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. 22 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. 23 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. 24 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. 25 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.

  18 to 25, the vertical axis represents the duct width direction coordinate, the horizontal axis represents the duct length direction coordinate, and the normalized ion concentration is represented by contour lines. The center position of the flow path in the common duct 910 is set to 0 on the coordinate axis.

  As shown in FIG. 18, a high concentration region of positive ions 20 exists on the first discharge electrode 140 side on the first duct 120 at a position 250 mm away from the electrode in the reference example. As shown in FIG. 20, a high concentration region of negative ions 30 exists on the second discharge electrode 170 side on the second duct 130 at a position 250 mm away from the electrode in the reference example. Therefore, most of the positive ions 20 and the negative ions 30 are located away from each other immediately after the release, and the bond annihilation of the positive ions 20 and the negative ions 30 is suppressed.

  As shown in FIG. 19, positive ions 20 are diffused radially from substantially the center of the common duct 910 at a position 1 m away from the electrode in the reference example. As shown in FIG. 21, in the reference example, at a position 1 m away from the electrode, the negative ions 30 are diffused radially from substantially the center of the common duct 910. Therefore, the positive ions 20 and the negative ions 30 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 20 and negative ions 30 could be supplied to a position away from the ion generator.

  As shown in FIG. 22, at a position 250 mm away from the electrode in the comparative example, the positive ions 20 are approximately in the center in the length direction of the duct 920 and in the width direction at a position 250 mm away from the electrode in the comparative example. It diffuses radially from the vicinity of the inner wall on one side. As shown in FIG. 24, in the comparative example, at a position 250 mm away from the electrode, the negative ions 30 are diffused radially from the vicinity of the inner wall on one side in the width direction and at the approximate center in the length direction of the duct 920. ing. Therefore, immediately after the release, many of the positive ions 20 and the negative ions 30 are bonded to each other and disappear.

  As shown in FIG. 23, in the comparative example, at a position 1 m away from the electrode, the positive ions 20 are diffused radially from substantially the center of the duct 920. As shown in FIG. 25, in the comparative example, at a position 1 m away from the electrode, the negative ions 30 are diffused radially from substantially the center of the duct 920. Therefore, the positive ions 20 and the negative ions 30 are mixed in the released space. However, the concentrations of the released positive ions 20 and negative ions 30 were lower than in this example, and the range in which the positive ions 20 and negative ions 30 were released was also narrower than in this 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 and the like due to the combination of the positive ions 20 and the negative ions 30.

  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 form of 5 points at 25 mm intervals in the width direction of the common duct 910 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. It was 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.

  10 ion generation circuit unit, 11 electrode control unit, 13, 18, 19 diode, 14 resistor, 15 capacitor, 16 terminal thyristor, 17 step-up transformer, 20 positive ion, 30 negative ion, 100, 200, 300 ion generator, 110 , 211, 212, 311, 312, 313 Standing duct, 120 First duct, 120a, 220a, 320a Upper outlet duct, 120ag, 120bg, 130ag, 130bg Gas, 120b, 220b, 320b Lower outlet duct, 121a, 121b, 131a, 131b flow path, 130 second duct, 130a, 230a, 330a first intermediate outlet duct, 130b, 230b, 330b second intermediate outlet duct, 140, 240, 340, 810 first discharge electrode, 150, 250, 350 , 8 30 First induction electrode, 160, 260, 360, 840 Second induction electrode, 170, 270, 370, 820 Second discharge electrode, 180, 280, 380 Power source, 184, 185, 187, 284, 285, 287, 384 , 385, 387 Conductor, 190 Blower mechanism, 210, 310, 910 Common duct, 400 louver, 410 Rotating shaft, 800 Ion generator, 850 Power supply circuit, 900 Indoor space, 920 duct.

Claims (9)

A blower mechanism;
A standing duct that constitutes a flow path that extends in the vertical direction and in which the gas blown by the blowing mechanism rises;
At least three outlet ducts having flow paths arranged in parallel in the vertical direction with respect to the standing duct and communicating with the flow path;
An ion generating part that is provided in each of at least three of the blowing ducts and generates ions;
The upper outlet duct located at the uppermost part and the lower outlet duct located at the lowermost part of the outlet ducts provided with the ion generating part blow out positive ions and are provided with the ion generating part. An ion generating apparatus in which an intermediate blowing duct located between the upper blowing duct and the lower blowing duct among the blowing ducts blows out negative ions.   The ion generator according to claim 1, wherein the upper blowout duct blows out gas at a larger flow rate than the intermediate blowout duct.   The ion generator according to claim 2, wherein the lower blowing duct blows out gas at a flow velocity larger than that of the intermediate blowing duct.   The ion generator according to any one of claims 1 to 3, wherein a central axis of the upper blowing duct intersects a central axis of the lower blowing duct in a plan view.   The center axis | shaft of each said blowing duct cross | intersects at an angle of 0 degree or more and 45 degrees or less with respect to the front surface where the said blowing duct of the said standing duct is arranged in parallel in planar view. Ion generator.   The ion generator according to any one of claims 1 to 5, wherein, in a plan view, an angle formed by central axes of each of the blowing ducts is 5 ° or more and 30 ° or less.   The ion generator according to any one of claims 1 to 6, wherein an elevation angle of a central axis of each blowing duct is 45 ° or less.   The ion generator according to any one of claims 1 to 7, comprising a plurality of said standing ducts each provided with said blowing duct.   The ion generator according to claim 8, wherein a shortest distance in a horizontal direction between the blowing ducts respectively provided in the standing ducts adjacent to each other among the plurality of standing ducts is 100 mm or more.

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