JP2012133999A - Ion generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion generating device in which cleaning of a discharge electrode is facilitated.SOLUTION: An ion generating device comprises: a needle-like discharge electrode 1; an induction electrode 2 disposed opposite to the discharge electrode 1; a case 9 (a discharge electrode holding member) which holds the discharge electrode 1; and a lid 10 (an induction electrode holding member) which holds the induction electrode 2. The case 9 and the lid 10 can be coupled in a coupled state with the discharge electrode 1 and the induction electrode 2 facing each other, or separated in a separated state with the discharge electrode 1 and the induction electrode 2 separated from each other. The case 9 is a box having an opening portion 9a, and houses the discharge electrode 1 so that an end part of the discharge electrode 1 faces outside through the opening portion 9a. The induction electrode holding member is a lid 10 which can be freely attached to and detached from the opening portion 9a, and has an opening 10-1 at a position corresponding to the discharge electrode 1 and includes the induction electrode 2 on the periphery of the opening 10-1.

Description

  The present invention relates to an ion generator that generates ions by discharging in air.

  When a high voltage is applied between a discharge electrode (for example, a needle electrode) and an induction electrode facing the discharge electrode, air near the tip of the needle electrode causes dielectric breakdown, and partial discharge (corona discharge) occurs. What happens is generally known. FIG. 16 is a diagram for explaining the operating principle of an ion generator using corona discharge. In the ion generator shown in FIG. 16, the tip of the needle-like discharge electrode 31 is arranged so as to be located on the central axis of the ring-like induction electrode 32. When the induction electrode 32 is grounded and a negative high voltage is applied to the discharge electrode 31, negative ions are generated at the tip of the discharge electrode 31 and are attracted to the induction electrode 32 and accelerated. When the induction electrode 32 is grounded and a positive high voltage is applied to the discharge electrode 31, positive ions are generated at the tip of the discharge electrode 31 and are attracted to the induction electrode 32 and accelerated. An ion generator based on such a principle has been put into practical use and mounted on an air cleaner or the like.

  FIG. 17 is a perspective view showing the internal structure of a conventional ion generator. The needle-like discharge electrode 31 and the metal plate-like induction electrode 32 are fixed to the substrate 33, and the discharge electrode 31 is located at the center of the round hole opened in the induction electrode 32. A pulse generation circuit 34 to which electric power is supplied from the outside, a pulse voltage generated by the pulse generation circuit 34 is boosted, a positive high voltage is applied to one of the needle-like discharge electrodes 31, and a negative high voltage is applied to the other. An application transformer 35 is provided. The induction electrode 32 has a pseudo ground potential. A rectangular parallelepiped case 36 having an opening on one surface and a lid 37 for closing the opening surface of the case 36 are provided. Inside the case 36, the substrate 33, the pulse generation circuit 34, and the transformer 35 with the tip of the discharge electrode 31 facing the opening surface are accommodated, and the lid 37 is bonded to the case 36. The lid 37 has an ion emission hole 38 in which each discharge electrode 31 is located at the center (see Patent Document 1).

  When the ion generator as described above is used for a long time, foreign matters such as dust and gas existing in the air are attracted to and attached to the tip of the discharge electrode. Further, if it is continuously used as it is, the amount of foreign matter attached increases, the electric field between the discharge electrode and the induction electrode weakens, and the discharge is prevented, thereby reducing the amount of ions generated. Therefore, it is necessary to periodically clean the tip of the discharge electrode. Since the adhered foreign matter can be removed by lightly rubbing the tip of the electrode, a small brush or cotton swab is used for cleaning the electrode.

JP 2008-016345 A

  In the conventional ion generator, since the induction electrode is disposed in the vicinity of the discharge electrode (needle electrode), it is difficult for the brush and the swab to reach the foreign substance adhesion portion (needle tip) of the discharge electrode, and the cleaning operation is not easy. There was a problem.

  This invention is made | formed in view of the above situations, and it aims at providing the ion generator which can clean the discharge electrode easily.

  The ion generator which concerns on this invention is an ion generator provided with the discharge electrode and the induction electrode arrange | positioned facing this discharge electrode, The discharge electrode holding | maintenance part holding the said discharge electrode, and hold | maintains the said induction electrode An induction electrode holding portion, and the discharge electrode holding portion and the induction electrode holding portion can be separated into a coupled state in which the discharge electrode and the induction electrode are coupled to face each other and a separated state separated from each other. It is characterized by being.

  In the present invention, the discharge electrode holding part and the induction electrode holding part can be combined and the discharge electrode and the induction electrode can be arranged to face each other to perform the ion generation operation. The discharge part and the induction electrode can be separated from each other by separating the holding part from each other.

  In the ion generating apparatus according to the present invention, the discharge electrode is a needle-like electrode, the discharge electrode holding portion is a box having an opening, and an end of the needle-like electrode is outward from the opening. The discharge electrode is accommodated in a facing state, the induction electrode holding portion is a lid that is detachable from the opening, and the lid has an opening at a location corresponding to the discharge electrode, The induction electrode is provided around the opening.

  In the present invention, by attaching a lid to the opening of the box, the discharge electrode accommodated in the box with the lid facing outward from the opening of the box and the opening corresponding to the discharge electrode of the lid An inductive electrode provided in the periphery is arranged oppositely, and an ion generation operation can be performed. On the other hand, by removing the lid from the box, the discharge electrode accommodated in the box and the induction electrode provided in the lid can be separated.

The ion generator according to the present invention is characterized in that the induction electrode is embedded in the lid.
In the present invention, since the induction electrode is embedded in the lid, the number of parts is reduced and handling is simplified as compared with the case where the induction electrode and the lid are separate.

The ion generator according to the present invention is characterized in that the induction electrode is provided on an inner surface of the lid.
In the present invention, since the induction electrode is provided on the inner surface of the lid, the lid having the induction electrode can be easily produced with less effort compared to the case where the induction electrode is embedded in the lid.

An ion generator according to the present invention is characterized in that a high voltage generator that generates a high voltage is accommodated in the box, and includes a wiring that connects the discharge electrode and the induction electrode to the high voltage generator. And
In the present invention, the high voltage generating part housed in the box is connected to the discharge electrode and the induction electrode by wiring, and the high voltage generated by the high voltage generating part can be applied between both electrodes. Note that the voltage generated by the high voltage generator may be any of DC voltage, pulsed voltage, AC voltage, and the like.

The ion generator according to the present invention is characterized in that an induction electrode wiring for connecting the induction electrode and the high voltage generation unit is provided in the box and the lid.
In the present invention, the high voltage generator housed in the box and the induction electrode provided on the lid are connected by the wiring for induction electrode provided on the box and the lid.

The ion generator according to the present invention is characterized in that at least a part of the induction electrode wiring is embedded in the box or the lid.
In the present invention, since at least a part of the induction electrode wiring is embedded in the box or the lid, the wiring is not exposed and the handling safety can be improved.

In the ion generating apparatus according to the present invention, the induction electrode wiring includes a box body side wiring portion and a lid body side wiring portion, and the box body side wiring portion and the lid body side when the lid body is attached to the box body. A contact point for connecting the wiring part is provided.
In the present invention, as the lid is attached to the box, the contact is conducted, and the box-side wiring part and the lid-side wiring part are connected. Therefore, by automatically attaching the lid to the box, The high voltage generation part accommodated in the box and the induction electrode provided in the lid can be connected, and the labor of the connection operation is reduced.

An ion generator according to the present invention includes a high voltage generator that generates an alternating high voltage in the box, and includes a wiring that connects the discharge electrode and the high voltage generator, and the induction electrode includes the high voltage generator. It is not connected to the voltage generator.
In the present invention, the high voltage generator and the discharge electrode housed in the box are connected by wiring, and the AC high voltage generated by the high voltage generator is applied to the discharge electrode. In the case of applying an alternating high voltage to the discharge electrode, no induction electrode is particularly required.

  The ion generator according to the present invention is an ion generator provided with a discharge electrode, wherein the discharge electrode is a needle-like electrode and has an opening, and an end of the needle-like electrode faces outward from the opening. A box that accommodates the discharge electrode in a state of being in contact, a lid that has an opening at a location corresponding to the discharge electrode, and a lid that is detachable from the opening, and a high voltage supply that supplies an alternating high voltage to the discharge electrode And a portion.

  In the present invention, a lid is attached to the opening of the box, and an ion generation operation is performed by supplying an alternating high voltage to the discharge electrode accommodated in the box with the lid facing outward from the opening of the box. On the other hand, the discharge electrode in the box can be exposed by removing the lid from the box.

  According to the present invention, when the discharge electrode holding portion and the induction electrode holding portion that can be coupled and separated are separated, the discharge electrode and the induction electrode are separated to expose the discharge electrode, so that the induction electrode does not get in the way. An ion generator that can easily clean the discharge electrode is provided.

  According to the present invention, a detachable lid is attached to the opening of the box and the ion generation operation is performed by the discharge electrode accommodated in the box while the lid is detached from the box. An ion generator is provided that exposes a discharge electrode in a box and facilitates cleaning of the discharge electrode.

It is a perspective view which shows the external appearance of the ion generator which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of the cover body of the ion generator shown in FIG. It is a perspective view which shows the structure of the box of the ion generator shown in FIG. It is sectional drawing which shows the mounting structure of the ion generator shown in FIG. It is sectional drawing which shows the wiring structure of the ion generator shown in FIG. It is a circuit block diagram of the ion generator shown in FIG. It is a perspective view which shows the modification of the cover body of the ion generator shown in FIG. It is sectional drawing which shows the modification of the wiring structure of the ion generator shown in FIG. It is a perspective view which shows the external appearance of the ion generator which concerns on Embodiment 2 of this invention. It is a perspective view which shows the structure of the cover body of the ion generator shown in FIG. It is a perspective view which shows the structure of the box of the ion generator shown in FIG. It is sectional drawing which shows the structure of the ion generator shown in FIG. It is a perspective view which shows the modification of the ion generator shown in FIG. It is sectional drawing which shows the modification of the ion generator shown in FIG. It is a figure which shows schematic structure of the ion generator which concerns on Embodiment 3 of this invention. It is operation | movement principle explanatory drawing of the ion generator using a corona discharge. It is a perspective view which shows the internal structure of the conventional ion generator.

Embodiments of an ion generator according to the present invention will be described below with reference to the drawings.
(Embodiment 1)
1 is a perspective view showing an external appearance of an ion generator according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing a structure of a lid of the ion generator shown in FIG. 1, and FIG. 3 is an ion shown in FIG. FIG. 4 is a cross-sectional view showing the mounting structure of the ion generator shown in FIG. 1, FIG. 5 is a side cross-sectional view showing the wiring structure of the ion generator shown in FIG. 6 is a circuit block diagram of the ion generator shown in FIG.

  The ion generator of the present invention includes a case 9 whose outer shape is a rectangular parallelepiped shape and has an opening 9 a on one surface, and a rectangular plate-like lid 10 that is detachable from the opening 9 a of the case 9. Case 9 and lid 10 are made of synthetic resin. The needle-like discharge electrode 1 for generating ions is fixed to the support substrate 3 with the tip directed toward the opening 9 a, and the support substrate 3 is held on the inner wall of the case 9. Two discharge electrodes 1 are provided at an interval. In FIG. 3 (the same applies to FIG. 11), the display of the discharge electrode 1 is omitted.

  The lid 10 has two circular through holes 10-1 and 10-2 corresponding to the two discharge electrodes 1 when mounted on the opening 9 a of the case 9. As for each discharge electrode 1, the front-end | tip of a needle-like electrode is located in the center of each through-hole 10-1, 10-2. An inductive electrode 2 made of a single rectangular metal plate is embedded in the lid 10 so as to surround each of the through holes 10-1 and 10-2.

  The case 9 has convex guides 9b along the edges on both inner surfaces of the facing edges of the opening 9a. One end of the guide 9 b is opened outward, and the other end is closed by the wall of the case 9. A notch 9c is provided at the upper end of the wall of the case 9 on the side closing the end of the guide 9b.

  The lid 10 has a concave guide 10 a having a shape corresponding to the convex guide 9 b of the case 9 on the end surface. The lid 10 has a protrusion 10b on one end surface on the side where the guide 10a is not provided, and a flange 10c is formed on the lower side of the protrusion 10b. The lid 10 is inserted from the open end side of the guide 9 b of the case 9, the guide 10 a is fitted on the guide 9 b and slid, and the lid 10 is attached to the case 9. Specifically, when the projection 10b provided on the lid 10 passes through the notch 9c of the guide 9b, the flange 10c abuts against the bottom of the notch 9c and elastically deforms upward, and the flange 10c passes through the notch 9c. After that, the protrusion 10b returns to the original posture, so that the flange 10c is locked to the bottom of the notch 9c, and the lid 10 is fixed to the case 9. When removing the lid 10 from the case 9, the lid 10 is slid to the opposite side of the mounting direction with the protrusion 10 b pulled up to release the locking of the flange 10 c by the notch 9 c, and the lid 10 is removed from the case 9. 9 is removed from the open end of the guide 9b.

  A power input connector 12 is provided on the wall of the case 9, and a drive circuit 13 that receives a DC power supply or a commercial AC power supply from the outside via the power input connector 12 inside the case 9, and is driven by the drive circuit 13. In addition, a high voltage generation circuit 14 for generating an alternating high voltage, a positive high voltage generation circuit 15, and a negative high voltage generation circuit 16 are provided. One end (ground side) of the output of the high voltage generation circuit 14 is electrically connected to the induction electrode 2 as described later, and the other end of the output is a positive high voltage generation circuit 15 and a negative high voltage generation circuit 16. The positive high voltage generation circuit 15 applies a positive high voltage to one discharge electrode 1 through the wiring 4-1, and the negative high voltage generation circuit 16 connects the other discharge electrode through the wiring 4-1. 1 is applied with a negative high voltage.

  A contact 8-2 is provided on the end surface of the lid 10 on the side where the protrusion 10b is provided. When the lid 10 is attached to the case 9 on the inner surface of the wall of the case 9, the contact 8-2 on the lid 10 side. A contact 8-1 that contacts 29 is provided. Further, the contact 7 connected to the wiring 4-2 connected to one end of the output of the high voltage generation circuit 14 is provided on the inner surface of the wall portion of the case 9, and the wiring 5 connecting the contact 7 and the contact 8-1 is the wall of the case 9. It is buried in the part. A wiring 6 that connects the induction electrode 2 and the contact 8-2 is embedded in the lid 10. A contact 8 for connecting the wiring 6 connected to the induction electrode 2 and the wiring 5 embedded in the case 9 is constituted by the contact 8-1 and the contact 8-2.

With the above configuration, when the lid 10 is attached to the case 9, the induction electrode 2 is connected to the ground of the high voltage generation circuit 14 by the wiring 6, the contacts 8-1, 8-2, the wiring 5, the contact 7, and the wiring 4-2. Connected to the side. When a high voltage is applied between the discharge electrode 1 and the induction electrode 2, a corona discharge is generated. Positive ions H ⁺ (H ₂ O) m (m is a natural number) are generated from the discharge electrode 1 to which a positive high voltage is applied, and negative ions O ₂ ⁻ from the discharge electrode 1 to which a negative high voltage is applied. (H ₂ O) n (n is a natural number) is generated. Each produced | generated ion is discharge | released to external space from each through-hole 10-1, 10-2 opened in the lid | cover 10. FIG.

  On the other hand, when the lid 10 is removed, the induction electrode 2 embedded in the lid 10 is also removed at the same time (see FIG. 5), and the discharge electrode 1 is exposed. Therefore, when dust or the like adheres to the needle tip of the discharge electrode 1 The discharge electrode 1 can be easily cleaned using a cotton swab or a brush.

  It is also possible to make the opening 9a of the case 9 about half the size shown in FIG. 3 and to make the lid 10 small so as to cover only the upper part of the discharge electrode 1. This makes it possible to prevent the user from directly touching the circuit board such as the high voltage generation circuit 14 while realizing the gist of the present invention (easier cleaning of the discharge electrode 1).

  Further, the induction electrode 2 is provided with a circular through hole centered on the discharge electrode 1, but may be a polygonal through hole as long as it does not hinder the generation of ions from the discharge electrode 1. Further, as shown in FIG. 7, the induction electrode 2 </ b> A may be two strip-shaped metal plates or bar wires installed with the through holes 1-1 and 1-2 of the lid 10 interposed therebetween. FIG. 7 is a perspective view showing a modified example of the lid of the ion generator shown in FIG. Both induction electrodes 2A are connected to contact 8-2 by wiring 6A. In addition, in FIG. 7, the induction electrode 2 </ b> A may be installed along one side of the through holes 10-1 and 10-2.

  Further, the induction electrode 2 may be structured not to be connected to the high voltage generation circuit 14. FIG. 8 is a cross-sectional view showing a modification of the wiring structure of the ion generator shown in FIG. Specifically, even if the wiring 4-2, the wiring 5, the wiring 6, the contact 7, and the contact 8 are omitted, the structure can be further simplified because it operates as an ion generator. Also in this case, the discharge electrode 1 can be exposed by removing the lid 10 in which the induction electrode 2 is embedded, and the discharge electrode 1 can be easily cleaned.

(Embodiment 2)
9 is a perspective view showing the appearance of the ion generator according to Embodiment 2 of the present invention, FIG. 10 is a perspective view showing the structure of the lid of the ion generator shown in FIG. 9, and FIG. 11 is the ion shown in FIG. FIG. 12 is a sectional view showing the structure of the ion generator shown in FIG. 9. The second embodiment is different from the first embodiment in that the lid 10A is not a slide with respect to the opening 9a of the case 9A but is covered from the upper side and fitted into the case 9A. The structure is the same as that of the first embodiment.

  The case 9A has a step portion 9A1 having a depth equal to the width and thickness of the lid 10A at the upper ends of both opposing wall portions of the opening 9a, and a circular through hole 9A2 provided at the center of the both wall portions. Yes. In the lid 10A, a pair of fitting arms 20 that are inscribed in both opposing wall portions of the case 9A are erected on the inner (lower) surface when mounted on the case 9A. Are provided with a convex fitting portion 21 that fits into the through hole 9A2 of the case 9A. When the lid 10A is put on the opening 9a of the case 9A with the fitting arm 20 facing down, the fitting portion 21 provided on the fitting arm 20 is fitted into the through hole 9A2 of the case 9A, and the lid 10A is fitted to the case 9A. Fixed to. When removing the lid 10A, when the fitting portion 21 is pushed into the inside of the case 9A from the outside and the lid 10A is pulled up at the same time, the fitting between the fitting portion 21 and the through hole 9A2 is released, and the lid 10A is removed from the case 9A. be able to. By doing so, the mounting structure becomes simpler than in the first embodiment.

  A contact 8A-1 is provided on one step 9A1 of the case 9A, and a contact 8A-2 that contacts the contact 8A-1 on the case 9A side when the cover 10A is mounted on the case 9A is provided on the lid 10A. It is. The contact 8A-2 is connected to the induction electrode 2 embedded in the lid 10A by a wiring 6B. That is, as the mounting structure changes, the contact 8A that connects the wiring 6B connected to the induction electrode 2 and the wiring 5 embedded in the case 9A is brought into pressure contact with each other in the vertical direction, and the contact 8A-1 and the contact are connected. 8A-2.

  13 is a perspective view showing a modification of the ion generator shown in FIG. 9, and FIG. 14 is a cross-sectional view showing a modification of the ion generator shown in FIG. In this modification, the basic structure is the same as that of the ion generator shown in FIG. 9, except that the induction electrode 2B is not embedded in the lid 10B but is exposed on the back surface (inner surface).

  Specifically, the induction electrode 2B formed of a metal foil is attached to the back surface of the lid 10B. Further, the metal foil constituting the induction electrode 2B is partially extended to form a contact 8B-2, and the contact 8B-2 is in contact with the contact 8B-1 on the case 9A side. A contact 8B for connecting the induction electrode 2B and the wiring 5 embedded in the case 9A is constituted by the contact 8B-1 and the contact 8B-2. By adopting such a structure, it is not necessary to embed the induction electrode in the lid, and the contact 8B-2 on the lid side is not separate from the induction electrode, but is formed integrally with the induction electrode 2B. The structure can be simplified by the contact 8B-1 on the case 9A side being in direct contact with the contact 8B-2.

(Embodiment 3)
FIG. 15 is a diagram showing a schematic configuration of an ion generator according to Embodiment 3 of the present invention. In the first and second embodiments, the induction electrodes are provided on the lids 10, 10A, and 10B. However, the third embodiment is different from the first and second embodiments in that no induction electrode is provided.

  A case 9B and a lid 10C that can be attached to and detached from the case 9B are provided. In the case 9B, two discharge electrodes 1 and a support substrate 3 having the same configuration as those of the first and second embodiments are provided. One end of the output of the high voltage generation circuit 22 that generates an alternating high voltage is connected to each discharge electrode 1 via diodes 23 and 24 in opposite directions. Further, the other end (ground side) of the output of the high voltage generation circuit 22 is connected to the support substrate 3 or the case 9B at a position separated from the discharge electrode 1 so as not to cause a short circuit or leakage. Also in the third embodiment, the discharge electrode 1 can be exposed by removing the lid 10C, and the discharge electrode 1 can be easily cleaned.

  In the above configuration, when a high voltage is applied from the high voltage generation circuit 22 to each discharge electrode 1, the connection point of the support substrate 3 or the case 9B to which the other end (ground side) of the output of the high voltage generation circuit 22 is connected is zero. Since the potential is stable, corona discharge occurs at the needle tip of the discharge electrode 1 due to the concentration of the electric field from the connection point of the zero potential of the support substrate 3 or the case 9B to the needle tip of each discharge electrode 1, and ions are generated. Ions are generated even in the absence of induction electrodes.

  Specifically, at the needle tip of the positive discharge electrode 1 connected via the diode 23 whose anode is the high voltage generation circuit 22 side, of the positive ions and negative ions generated by corona discharge, the negative ions are the diodes 23. Through the high voltage generation circuit 22 and only positive ions are released. Similarly, in the needle tip of the negative side discharge electrode 1 connected to the high voltage generation circuit 22 side via the diode 24 which is a cathode, positive ions pass through the diode 24 among positive ions and negative ions generated by corona discharge. Thus, it is drawn into the high voltage generation circuit 22 and only negative ions are released. The negative ions drawn into the high voltage generation circuit 22 through the diode 23 and the positive ions drawn into the high voltage generation circuit 22 through the diode 24 are neutralized at the connection point between the diodes 23 and 24 and become zero potential. It stabilizes at.

  Embodiments 1-3 described above are examples in all respects and are not restrictive. The scope of the present invention is defined by the terms of the claims, and includes all modifications that are within the scope of the claims.

  The present invention relates to an ion generator, and in particular, in the ion generator using a needle-like discharge electrode and a plate-like induction electrode, the discharge electrode is easily cleaned, and at the same time, the structure is simplified and miniaturized. And it can apply to the ion generator which implement | achieves the improvement of an assembly property.

DESCRIPTION OF SYMBOLS 1 Discharge electrode 2 Induction electrode 2A Induction electrode 2B Induction electrode 4-1 Wiring 4-2 Wiring (box side wiring part, induction electrode wiring)
5 Wiring (wiring for box side, induction electrode wiring)
6 Wiring (wiring for lid side, induction electrode wiring)
6A wiring (wiring for lid side, wiring for induction electrode)
6B Wiring (wiring for lid side, induction electrode wiring)
8 contacts 8A contacts 8B contacts 9 Case (box, discharge electrode holder)
9A case (box, discharge electrode holder)
9a Opening 10 Lid (lid, induction electrode holding part)
10-1 Opening 10-2 Opening 10A Lid (lid, induction electrode holding part)
10B Lid (lid, induction electrode holder)
14 High voltage generator (High voltage generator)
15 Positive high voltage generator (high voltage generator)
16 Negative high voltage generator (high voltage generator)
22 High voltage generator (High voltage supply unit)
23 Diode (High Voltage Supply Unit)
24 Diode (High voltage supply unit)

Claims (10)

In an ion generator comprising a discharge electrode and an induction electrode arranged opposite to the discharge electrode,
A discharge electrode holding portion for holding the discharge electrode; and an induction electrode holding portion for holding the induction electrode, wherein the discharge electrode holding portion and the induction electrode holding portion are arranged so that the discharge electrode and the induction electrode are opposed to each other. An ion generator characterized in that it can be coupled and separated into a coupled state coupled with each other and a separated state separated from each other. The discharge electrode is a needle electrode;
The discharge electrode holding portion is a box having an opening, and the discharge electrode is accommodated in a state in which an end portion of the needle electrode is directed outward from the opening,
The induction electrode holding portion is a lid that is detachable from the opening,
The ion generator according to claim 1, wherein the lid has an opening at a location corresponding to the discharge electrode, and the induction electrode is provided around the opening.   The ion generator according to claim 2, wherein the induction electrode is embedded in the lid.   The ion generator according to claim 2, wherein the induction electrode is provided on an inner surface of the lid.   The high voltage generating part for generating a high voltage is accommodated in the box, and the wiring for connecting the discharge electrode and the induction electrode and the high voltage generating part is provided. The ion generator of Claim 1.   6. The ion generator according to claim 5, wherein an induction electrode wiring for connecting the induction electrode and the high voltage generator is provided on the box and the lid.   The ion generating apparatus according to claim 6, wherein at least a part of the induction electrode wiring is embedded in the box or the lid.   The induction electrode wiring has a box side wiring part and a lid side wiring part, and includes a contact point for connecting the box side wiring part and the lid side wiring part when the lid is attached to the box. The ion generator according to claim 6 or 7, wherein the ion generator is provided.   A high voltage generating unit that generates an alternating high voltage is housed in the box, and includes a wiring that connects the discharge electrode and the high voltage generating unit, and the induction electrode is not connected to the high voltage generating unit. The ion generator of any one of Claim 2 to 4 characterized by these. In an ion generator equipped with a discharge electrode,
The discharge electrode is a needle electrode;
A box containing the discharge electrode in a state of having an opening and an end of the needle electrode facing outward from the opening; and an opening corresponding to the discharge electrode, the opening An ion generator comprising: a lid that is detachably attachable to the discharge electrode; and a high voltage supply unit that supplies an alternating high voltage to the discharge electrode.

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