JP2002237369A - Ion air injection device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make ion air efficiently inject. SOLUTION: An alternating current high voltage generation circuit 12a, an ion generation block 14, and an ion blowing switch 16 are mounted to an air blow gun 10. An ion generation chamber 36 is formed to the ion generation block 14. An air nozzle 51 is connected to the ion generation chamber 36. An air injection tube 50 is arranged inside the ion generation chamber 36 at the position facing the air nozzle 51. The inner diameter of the air injection tube 50 is made 1 mm, and the inner diameter of the air nozzle 51 is made 3 mm. A discharge electrode 37 is arranged on both sides of the air injection tube 50 inside the ion generation chamber 36. An alternating current high voltage is impressed to the discharge electrode 27 and to a grounding electrode 46 from the alternating current high voltage generation circuit 12a. The pressure inside the ion generation chamber is made negative by injecting compressed air from the air injection tube 50, and ion air is exhausted from the air nozzle 51 accompanied by the blow out of the compressed air. Turbulent current is restrained and the ion air is efficiently injected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ion air ejecting apparatus for generating and ejecting ion air by corona discharge, and more particularly, to an ion air having an air blowing function and blowing off dust and dust attached thereto while removing static electricity from an object. The present invention relates to an injection device.

[0002]

2. Description of the Related Art In order to remove dust adhering to a photographic film, the surface of the film is neutralized and then brushed or blown off with air. Air is ionized by corona discharge, and the ionized air is used to remove electricity from the film surface.

An air blow gun having a static eliminator as shown in FIG. 7 is one that simultaneously performs the static elimination and dust elimination. In the static elimination type air blow gun 2, a discharge electrode 5 such as a discharge needle is arranged in a nozzle 4 of a general air blow gun 3 so that ionized air is blown out by compressed air supplied from an air hose 6. It is configured. Note that reference numeral 7 denotes a high voltage generator, and 8 denotes a high voltage cable.

When the discharge electrode is arranged in the air nozzle as described above, since the compressed air is used, the compressed air is adiabatically expanded and cooled in the air nozzle. When a fault occurs, a short circuit may occur. In order to solve such an electric leakage problem, there has been proposed a structure in which an electric system having a discharge needle for discharging ions and an air blow gun system having an air nozzle are structurally independent (for example, Japanese Patent Application Laid-Open No. H11-157572). Opening 2000-30
No. 6693).

[0005]

In the above-described conventional static elimination type air blow gun, the discharge needle and the air discharge tube are arranged in parallel, or the air discharge tube is arranged behind the discharge needle and the air is blown from behind the discharge needle. Was ejected. For this reason, it is necessary to supply high-pressure compressed air to the air blow gun. Therefore, an expensive compressor having a high compression ratio is required, and there is a problem that the equipment cost for dust removal of the photographic film increases. In addition, when the discharge needle is arranged inside the air path, there is a problem that turbulence is generated due to an increase in air pressure, and + ions and-ions are mixed, and the effect of ions is reduced.

An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an ion air injection device which can use a low-pressure compressor and can improve the static elimination efficiency.

[0007]

According to the present invention, there is provided a discharge electrode and a ground electrode for generating ions by corona discharge, an ion generation chamber having the discharge electrode, and an ion generation chamber. An air discharge unit that is provided to protrude into the chamber and discharges compressed air, and an air discharge unit that is disposed to face the air discharge unit and discharges air in the ion generation chamber together with the compressed air of the air discharge unit. An external air introduction port communicating from the ion generation chamber to the outside is provided, and a high voltage generation unit for applying an AC high voltage to the discharge electrode and the ground electrode is provided.

Preferably, a plurality of discharge electrodes are provided near the air discharge pipe. In particular, by providing two discharge electrodes and arranging the discharge electrodes so as to sandwich the air discharge portion, it is possible to stably generate ion air.

In addition, there is provided a case having the ion generating chamber, the air discharge section, and the high voltage generating section therein and having the air discharge section and the outside air introduction port. Preferably, the air discharge section is provided at a tip of the section. Further, it is preferable that a cleaning opening of the discharge electrode which is continuous with the outside air inlet and a lid for closing the cleaning opening are provided.

The air discharge section is constituted by an air discharge pipe protruding into the ion generation chamber, the air discharge section is constituted by an air discharge pipe, and the inside diameter of the air discharge pipe is made smaller than the inside diameter of the air discharge pipe. Is preferred. Further, it is preferable to insert and arrange the tip of the air discharge pipe into the air discharge pipe. In particular, the inner diameter of the air discharge pipe is preferably 0.5 to 1.5 mm, and the inner diameter of the air discharge pipe is preferably 2 to 4 mm.

[0011]

According to the present invention, an air discharge section is provided so as to protrude into an ion generation chamber having a discharge electrode, and air in the ion generation chamber is compressed by an air discharge section arranged opposite to the air discharge section. Since the compressed air is discharged together with the air, the ionized air in the ion generating chamber is sucked into the air discharge section together with the discharge of the compressed air, and the ion air is efficiently discharged. For this reason, even if a low-pressure compressor is used, efficient static elimination and dust elimination are performed without lowering the static elimination effect. In addition, since the compressed air is discharged from the air discharge portion without staying at the air discharge portion, water droplets and the like due to cooling after the adiabatic expansion are not generated in the ion generation chamber.

[0012]

FIG. 1 shows an air blow gun of an ion air injection device embodying the present invention. The air blow gun 10 is configured by disposing an AC high voltage generation substrate 12, a piezoelectric transformer substrate 13, and an ion generation block 14 in a gun type case 11.

The case 11 is formed of ABS resin into a gun shape including a grip portion 11a and an air injection portion 11b. The case 11 is composed of two case members vertically divided in half and a set screw (both not shown) for fastening them, but the structure of the case is not limited to this, and various cases are available. May be divided and assembled. Nozzle storage hole 11c at the back of grip 11a
Are formed, in which a replaceable nozzle 15 is housed.

In the grip 11a, an AC high voltage generating substrate 12 is arranged along the grip 11a. In addition to the AC high voltage generating circuit 12a, the AC high voltage generating substrate 12 is provided with an ion air blowing switch 16 on the upper part and a piezoelectric transformer substrate 13 on the side. The piezoelectric transformer substrate 13 includes a piezoelectric transformer 13a, and is connected to the AC high voltage generation substrate 12 via a connection wire 17. In addition, the AC high voltage generation substrate 12
Are connected to three electric wires 20, 21, 22.

An air hose insertion opening 25 is formed below the grip 11a, and an air hose 26 is drawn into the grip 11a through the opening 25. The three wires 20 to 22 are inserted into the air hose 26, and are separated into an air pipe and wires 20 to 22 by a Y-shaped pipe joint 27.

As shown in FIG. 2, the branch pipe 2 on the air pipe side
An air communication pipe 28 is connected to 7a via a pipe joint member such as a cap nut 27c, a joint ball 27d, and a joint sleeve 27e. Further, the three electric wires 20 are connected to the branch pipe 27 b on the electric wire take-out side via a seal member 29.
22 are taken out to the outside, and these electric wires 20 to 2
2 is connected to the AC high voltage generation substrate 12. In addition,
The sealing member 29 is formed by putting the three electric wires 20 to 22 into a sealing tube 29a and then solidifying the same with an adhesive 29b. Is used.

The body connection pipe 27f is also provided with a similar cap nut 24.
The air hose 26 is connected by a, a joint ball 24b, and a joint sleeve 24c. The electric wire 20 is for a 24V power supply, and the electric wire 21 is for a ground.
The electric wire 22 is for a signal of the ion air blowing switch 16, and these electric wires 20 to 22 are connected to a separate control box 30 described later.

The air hose 26 and the electric wires 20 to 22 inserted into and passed through the air hose 26 are formed so that the compressed air passing through the air hose 26 does not become a resistance.
The inner diameter of the hose, the outer diameter of the wire, and the number of wires to be inserted are determined. In the present embodiment, the inner diameter of the air hose 26 is 6 mm, the outer diameter of the electric wires 20 to 22 is 1 mm, and the number of inserted wires is 3 mm.
It is a book. The outer diameter of the air hose 26 is 8 mm.

As shown in FIG. 1, an AC high voltage generating substrate 1
As is well known, the piezoelectric transformer substrate 2 and the piezoelectric transformer substrate 13 generate an AC high voltage for performing corona discharge, and apply the AC high voltage to the discharge electrode 37 of the ion generation chamber 36 via the high voltage cable 35. The high-voltage cable 35 is configured by covering a metal core wire with an insulator, and covering these with an insulating pipe.

The ion air blowing switch 16 is constituted by a push button switch. The ion air blowing switch 16 is turned on by pressing the operation button 16a once, and maintains the on state. By pressing the operation button 16a once again, the operation button 16a is turned off, and this off state is maintained. The ion air blowing switch 16 has two switch pieces, one of which is used for a control signal of the AC high voltage generating circuit 12a, and the other of which drives a solenoid valve 62 and an SSR (solid state relay) 63, which will be described later. Used for control signals.

The ion generating block 14 is an integrally molded product made of a synthetic resin, and has an ion generating chamber 36 opened at the upper part. This ion generation block 14
Is attached to the air injection portion 11b of the case 11 with the opening 45 facing upward. Then, as shown in FIG. 3, an openable / closable lid 43 is attached to the ion generation block 14 via an attachment shaft 44 so as to close a part of the opening 45. By opening the lid 43, the discharge electrode 37 in the ion generation chamber 36 can be cleaned.

As shown in FIGS. 3 and 4, a notch 43 a is formed between the lid 43 and the opening 45, and the notch 43 a functions as an air inlet of the ion generation chamber 36. The notch 43a is formed at the outer corner in the width direction of the lid 43 in accordance with the mounting position of the two discharge electrodes 37, as described later.

Further, as shown in FIG.
A ground electrode 46 is buried below the ion generating block 14 in the ion generating block 14, and a part thereof is exposed near the bottom of the ion generating chamber 36. This ground electrode 46 is connected to a ground line 47
Is connected to the AC high-voltage generating board 12 via the.

The ion generating block 14 has a ground electrode 4
In addition to 6, air discharge pipe 50 and air nozzle (air discharge pipe)
51 and the discharge electrode 37 are attached. The air discharge pipe 50 is formed to protrude into the ion generation chamber 36,
It is a Teflon (registered trademark) thin tube having an inner diameter φ1 of 1 mm. The air discharge pipe 50 is fixed to the upper end of the air communication pipe 28 via a connection sleeve 53. As shown in FIG. 1, the air communication pipe 28 is formed of an acrylic tube, and the upper part thereof is about 1 in accordance with the shape of the case 11.
It is bent to about 05 degrees.

The air nozzle 51 is detachably attached to the ion generating block 14 via an O-ring 52 at a position facing the air discharge pipe 50. Air nozzle 51
Is made of a SUS cylindrical tube having an inner diameter φ2 of 3 mm and an outer diameter of 4 mm. In this embodiment, the tip 50 a of the air discharge pipe 50 is inserted into the air nozzle 51 by about 2 mm.
This insertion amount L may be appropriately changed according to the pressure of the air discharge pipe 50, the air nozzle 51, and the compressed air. For example,
The compressed air is set to 0.1 to 0.5 MPa, and the air discharge pipe 50 is
When the inner diameter φ1 is 1 mm and the inner diameter φ2 of the air nozzle 51 is 3 mm, the insertion amount L is preferably 1-2 mm. As described above, by inserting the tip 50a of the air discharge pipe 50 into the air nozzle 51, even when the compressed air is discharged from the air discharge pipe 50 and cooled after adiabatic expansion to generate moisture, The water is injected to the outside together with the compressed air from the air discharge pipe 50. Therefore, the ion generation chamber 36
There is no danger of electric leakage due to moisture remaining inside.

The air nozzle 51 is properly used depending on the application. As shown in FIG. 1, a short type air nozzle 51 mounted on the ion generating block 14 is used for dust removal of a film mount or the like. The long type air nozzle 15 housed in the housing hole 11c is used for dust removal inside the apparatus such as a film carrier.

The discharge electrode 37 is disposed in a storage recess 45 provided continuously with the ion generating block 14.
The discharge electrode 37 is formed in a needle shape, and its tip is arranged in the lateral direction near the base of the air discharge pipe 50.
In the present embodiment, as shown in FIG.
7 is arranged, and its tip is arranged on the side of the air discharge pipe 50 in the ion generation chamber 36. In the present embodiment, the discharge electrodes 37 are arranged at the side positions of the air discharge pipe 50, but the arrangement position and the number of the arrangement may be changed as appropriate. For example, it may be disposed diagonally above the air discharge pipe 50.

By applying an AC high voltage of, for example, 2 KV between the discharge electrode 37 and the ground electrode 46 from the AC high voltage generating circuit 12a, the discharge electrode 37 becomes positive and negative.
And ions are generated alternately. The compressed air is discharged from the air discharge pipe 50 together with the application of the AC high voltage, so that the ionized air is sucked out to the air nozzle 51 with the discharge of the compressed air, and the compressed air is covered by the air nozzle 51. It is sprayed on a photographic film, such as a film mount, which is an object for static elimination and dust removal.

FIG. 5 is a schematic diagram showing the structure of the control box 60. The control box 60 includes a control circuit 61,
A solenoid valve 62, an SSR 63, and a DC power supply circuit 64 are provided, and a power switch 65 and a compressor type changeover switch 66 are attached. Further, an AC voltage of 100 V to 240 V is applied to the DC power supply circuit 6 via the power supply cord 67.
4 and SSR63. DC power supply circuit 64
Applies a DC voltage to the control circuit 61 and the AC high voltage generation circuit 12a. The control circuit 61 controls the solenoid valve 62, the SSR 63, and the like based on ON / OFF signals of a power switch 65, a compressor type changeover switch 66, and the air blowing switch (see FIG. 1) 16.

An on / off signal of the air blowing switch 16 is input to the control circuit 61 through the electric wire 22 branched from the air hose 26 by the Y-shaped pipe joint 27. In addition, a 24 V DC voltage from the DC power supply circuit 64 is applied to the AC high voltage generation circuit 12 a on the air blow gun 10 via the electric wires 20 and 21.

The solenoid valve 62 is controlled on and off by a control circuit 61. In this embodiment, a self-holding type electromagnetic valve is used, and the valve body is configured to switch between an open state and a closed state by inputting a signal, and to hold the switched state. Inlet 6 of solenoid valve 62
The air hose 71 of the air compressor 70 is connected to 2a, and the air hose 26 connected to the air blow gun 10 is connected to the outlet 62b of the solenoid valve 62.
In addition, when the SSR 63 is turned on, the power outlet 6
8. Apply 100 V to 240 V AC to the air compressor 70 via the power cord 69 to drive the air compressor 73.

There are usually two types of air compressors, and these two types are selectively connectable. The air compressor 70 is of a type (hereinafter, simply referred to as an A-type air compressor) in which a motor always rotates and constantly supplies compressed air when the power is turned on, and the air compressor 73 stores the compressed air in an air tank when the power is turned on. When the pressure drops due to the consumption of compressed air, the motor is turned on to compress the air, and when the pressure reaches a certain value, the motor is automatically stopped (hereinafter simply referred to as B type air compressor). is there. Furthermore, as the air supply source, these air compressors 7
In addition to 0 and 73, an existing compressed air pipe 74 may be used. In the present embodiment, the solenoid valve 62 and the air compressor 7
By selectively turning on and off 0, 73, the two types of compressors 70, 73 and compressed air pipe 74 can be used.

Next, the operation of the present embodiment will be described with reference to the flowchart of FIG. First, as an air supply source,
When the A type air compressor 70 is used, the power cord 69 of the air compressor 70 is connected to the power outlet 68 of the control box 60. Further, an air hose 71 from the air compressor 70 is connected to the inlet 62 a of the solenoid valve 62. Then, the compressor type switch 66 is operated according to the type of the air compressor. For example, in the case of the A type, the switch 66 is set to the A side. In the case of the B type, the switch 66 is operated to the B side. When the compressed air is supplied from the existing compressed air pipe 74, the control of the solenoid valve 62 is the same as that of the B type, so the switch 66 is operated to the B side. Next, the power switch 65 is turned on.

To remove dust and the like adhering to the photographic film, hold the air blow gun 10 by hand and press the air blowout switch 16 to turn it on with the nozzle tip facing the photographic film. Thus, the AC high voltage circuit 12a is turned on, an AC high voltage is applied to the discharge electrode 37, and the air in the ion forming chamber 36 is ionized. When the A-type compressor 70 is connected, the electromagnetic valve 62 is always turned on, and the SSR 63 is turned on by turning on the air blowing switch 16.
Accordingly, the A-type air compressor 70 is driven, and compressed air is supplied to the air blow gun 10 via the air hose 71, the solenoid valve 62, and the air hose 26. As a result, ion air is blown out from the air blow gun, and for example, the photographic film is discharged, and the attached dust and the like are blown off.

When the B type air compressor 73 is connected, the operation switch 66 is set to the B side, whereby the control circuit 61 keeps the SSR 63 on. Therefore, AC 100V to 240V is always supplied to the B type air compressor 73. The B-type air compressor 73 includes an air tank and automatically controls the compressor body based on the pressure of the compressed air in the air tank. Then, the solenoid valve 62 is turned on and off in accordance with the operation of the air blowing switch 16. Therefore, when the air blowing switch 16 is turned on, the AC high voltage circuit 12a is turned on and the solenoid valve 62 is turned on, so that the compressed air from the B type air compressor 73 is sent to the air blow gun 10, Blowing of ion air is performed. Even when the existing compressed air pipe 74 is connected to the solenoid valve 62, the solenoid valve 62 is controlled by turning on and off the air blowing switch 16, so that ion air is blown in the same manner.

In the above-described embodiment, the compressor type changeover switch 66 is provided, and according to the compressed air supply mode,
The changeover switch 66 is switched to the corresponding side so that the solenoid valve 6
2 and the SSR 63 are selectively controlled. However, the present invention may be implemented as a control box dedicated to an A type air compressor or a control box dedicated to a B type air compressor without using this changeover switch.

In the above embodiment, the on / off of the high voltage circuit and the on / off of the introduction of the compressed air from the compressed air supply source are controlled by the air blowing switch 16 provided in the air blow gun 10. 5 in FIG.
As shown by the dashed line, the external operation switch 80 such as a pedal
May be connected to the control circuit 61 via the interface unit 83. In this case, holding the air blow gun etc. on the worktable of the film scanner with a holder etc. frees both hands, so it is possible to remove dust by holding the photo film etc. with both hands, improving operability I do. The film detection sensor 81 may be provided on the holder instead of the external operation switch 80 or in combination with the external operation switch 80. In this case, by holding the photographic film over the holder, ion air can be automatically blown to the photographic film, further improving operability.

[0038]

According to the present invention, a discharge electrode and a ground electrode for generating ions by corona discharge, an ion generation chamber having a discharge electrode, and compressed air protrudingly provided in the ion generation chamber are provided. An air discharge unit that discharges air, an air discharge unit that is disposed to face the air discharge unit, and discharges air in the ion generation chamber together with the compressed air of the air discharge unit, and an outside air inlet that communicates with the outside from the ion generation chamber, High voltage generator that applies AC high voltage to the discharge electrode and ground electrode, so that the ionized air in the ion generation chamber is blown out of the air discharge unit together with the compressed air by the suction effect of the compressed air. Can be. Therefore, the generated ion air can be efficiently discharged. Also, due to the generation of negative pressure due to the blowing of compressed air,
Since the ion air is sucked into the air discharge section, unlike the conventional forced air blowing with compressed air, the generation of turbulence is suppressed, and + ions and-ions are not mixed and canceled, and ion air is efficiently used. Can be discharged well.

By providing a plurality of discharge electrodes 37 near the air discharge pipe 50, there is no variation in the discharge effect,
Ion air can be generated stably. In particular,
By providing two discharge electrodes 37 and arranging the discharge electrodes 37 so as to sandwich the air discharge pipe 50, ion air can be efficiently and stably generated.

An ion generating chamber, an air discharging section, and a high voltage generating section are incorporated, and a case having an air discharging section and an outside air inlet is provided. This case comprises a grip section and an injection section.
By providing the air discharge unit at the tip of the injection unit, the ion air injection device can be configured with a simple configuration. In particular, the air discharge portion is formed from an air discharge tube protruding into the ion generation chamber, the air discharge portion is formed from an air discharge tube, and the inside diameter of the air discharge tube is made smaller than the inside diameter of the air discharge tube. Accordingly, when the ion air is sucked in from the ion generation chamber and discharged from the air discharge unit, generation of turbulence can be suppressed, and the ion air can be efficiently blown out. Further, by arranging the tip of the air discharge pipe in the air discharge pipe, the occurrence of turbulence can be further suppressed. Further, by providing a cleaning opening for the discharge electrode that is continuous with the outside air inlet, and a lid that closes the cleaning opening,
When the lid is opened, the cleaning opening is continuous with the outside air inlet, so that a wide cleaning opening can be secured, and cleaning of the discharge electrode and the like becomes easy.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a main part of an air blow gun of an ion air injection device embodying the present invention.

FIG. 2 is a sectional view showing a branch portion of an air hose containing electric wires.

FIG. 3 is an enlarged plan view showing an air injection unit.

FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3, showing an enlarged ion generation block.

FIG. 5 is a schematic diagram showing a connection state between a control box of the ion air injection device and an air compressor.

FIG. 6 is a flowchart illustrating a processing procedure in a control circuit.

FIG. 7 is a side view showing a conventional air blow gun having a static eliminator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Air blow gun 11 Case 12 AC high voltage generation board 12a AC high voltage generation circuit 14 Ion generation block 16 Ion air blowout switch 20-22 Electric wire 26 Air hose 27 Y-shaped pipe joint 29 Seal member 30 Control box 36 Ion generation chamber 37 Discharge electrode 46 Ground electrode 50 Air discharge pipe 51 Air nozzle 60 Control box 61 Control circuit 62 Solenoid valve 63 SSR 65 Power switch 66 Compressor type changeover switch 70, 73 Air compressor 74 Compressed air piping

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Toshio Shiga 2-17-17 Kandasuda-cho, Chiyoda-ku, Tokyo Yamaume Building F-term within Lab Giken Co., Ltd. 5G067 AA25 DA19 DA21 DA22

Claims (8)

[Claims] 1. A discharge electrode and a ground electrode for generating ions by corona discharge, an ion generation chamber having the discharge electrode, and air protruding from the ion generation chamber and discharging compressed air. A discharge unit, an air discharge unit disposed to face the air discharge unit and discharging air in the ion generation chamber together with the compressed air of the air discharge unit, an outside air inlet communicating from the ion generation chamber to the outside, and the discharge An ion air injection device, comprising: a high voltage generator for applying an AC high voltage to the electrode and the ground electrode. 2. The ion air injection device according to claim 1, wherein a plurality of said discharge electrodes are provided near said air discharge pipe. 3. The ion air injection device according to claim 1, wherein two discharge electrodes are provided, and the discharge electrodes are arranged so as to sandwich the air discharge portion. 4. A case having a built-in ion generation chamber, an air discharge part, and a high voltage generation part, and having a case having the air discharge part and an outside air inlet, the case comprising a grip part and a discharge part, The ion air injection device according to any one of claims 1 to 3, wherein the air discharge unit is provided at a tip of the unit. 5. The ion air injection according to claim 1, further comprising a cleaning opening for the discharge electrode connected to the outside air inlet, and a lid for closing the cleaning opening. apparatus. 6. The air discharge section comprises an air discharge pipe protruding into the ion generating chamber, the air discharge section comprises an air discharge pipe, and the inner diameter of the air discharge pipe is larger than the inner diameter of the air discharge pipe. The ion air injection device according to any one of claims 1 to 5, wherein the size of the ion air injection device is also reduced. 7. The ion air injection device according to claim 6, wherein a tip of said air discharge pipe is inserted and arranged in said air discharge pipe. 8. The air discharge pipe has an inner diameter of 0.5 to 1.5.
The ion air injection device according to claim 6 or 7, wherein an inner diameter of the air discharge pipe is 2 to 4 mm.