JPH05319806A - Discharge body for ozone generation and ozonator - Google Patents

Abstract

PURPOSE:To stabilize and secure silent discharge and to generate ozone with high efficiency by making a discharge electrode of a discharge body a gauze electrode where thin wires made of conductive material are woven in the shape of a flat plate. CONSTITUTION:In a discharge body 1, an insulating plate made of mica in the shape of a flat plate of 0.15-1.0mm thickness and a gauze electrode formed by weaving thin wires (e.g. aluminum thin wires) in the shape of a flat net plate and laminated on the both planes of the insulating plate are provided. Voltage of 2000-6000V is applied to the gauze electrode. First, the times of the 1st timer (for making ozone generation off) 31 and the 2nd timer (for making ozone generation on) are previously set. When a power switch 38 and a transformer switch 41 are made on, the timer is operated, an auxiliary relay 28 being operated. As a result, an air intake body 27 and a solenoid valve 37 are operated to feed power to a high voltage transformer 22, the ozone generation of the discharge body 1, the air supply to a generation box 12 by the air intake body 27 (an inlet port 13) and the ozone transfer to the object place (an outlet port 14) being performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ozone generating discharge body for generating ozone by silent discharge in air, and an ozone generating apparatus using this ozone generating discharge body.

[0002]

2. Description of the Related Art As a conventional ozone generator using a silent discharge, there is a simple discharge reaction device disclosed in Japanese Patent Laid-Open No. 2-59043.

According to the above-mentioned conventional technique, a thin dielectric plate material having excellent heat resistance is adhered to both surfaces of a ground electrode made of a plate-shaped metal body having excellent thermal conductivity, and the outer surface of the dielectric plate material is adhered. A high-voltage electrode made of a linear metal material is pressed and fixed, and a pressing force for pressing the high-voltage electrode to the dielectric plate material is formed so that a part of the high-voltage electrode made of the linear metal causes a spring action. Or a separate member having a spring action is used, and a high voltage is applied between the ground electrode and the high-voltage electrode to generate a creeping discharge.

[0004]

According to the above-mentioned conventional technique, the ground electrode is made of aluminum having a thickness of 3 mm, the dielectric is made of an alumina material plate of 30 mm square and a thickness of 0.5 mm, and the high voltage electrode is 2 mm thick. In the case of the titanium rod of No. 2, 220 mg / h ozone was generated in the air raw material having a dew point of -10 degrees, and 136 mg / h ozone was generated in the air raw material having a humidity of 34%.

Although the above-mentioned prior art does not show the applied voltage value at the time of ozone generating operation, the voltage value which has been generally used conventionally in the ozone generating method utilizing silent discharge, that is, 9000 to Although it seems to be about 12000 V, there is a problem that the ozone generation amount is small as described above in spite of the consumption of such a large electric power, and the ozone generation capacity is unsatisfactory.

Further, since the high-voltage electrode is assembled and held only by the pressing force of the spring, there is a problem in that the assembled state of the high-voltage electrode lacks stability, which makes the discharge operation unstable and likely to occur. there were.

Therefore, the present invention was devised in order to solve the above-mentioned problems in the prior art, and its technical problem is to efficiently generate ozone with a simple structure and relatively little electric power, The aim is to make ozone readily available in a wide range of fields.

[0008]

Means for Solving the Problems The discharge means of the present invention which achieves the above technical objects has a thickness of 0.15 to 1.0.
[Mm], preferably 0.3 to 0.5 [mm], having an insulating plate made of a mica plate having a flat plate shape, being formed by weaving fine wires made of a conductive material into a flat mesh plate shape, It is to have a pair of wire mesh electrodes fixedly stacked and fixed to a plane, and to connect both wire mesh electrodes to a power source of applied voltage 2000 to 6000 [V], preferably 4000 to 4500 [V].

It is preferable that the wire mesh electrode is formed by a thin wire made of aluminum.

As a concrete structure of the discharge body, a flat plate made of a mica plate having a thickness substantially equal to that of the wire mesh electrode, in which holes are formed in the centers of the insulator on which the wire mesh electrodes are fitted almost exactly, respectively. A pair of frame plates are placed in a stack, and a pair of pressing plates formed by opening a window slightly smaller than the wire mesh electrode in the center of the flat plate made of mica plate. Stacked on the frame plate facing the peripheral edge of the electrode,
A fastener made of an electrically insulating material, which firmly holds and holds the stacking posture of the stack of the insulating plate, the pair of wire mesh electrodes, the pair of frame plates, and the pair of pressing plates, is provided around the peripheral edge of the stack. The one assembled in

Further, the means of the ozone generator of the present invention comprises:
Providing an inlet port on the front wall and an outlet port on the rear wall of the generating box, which is a sealed box-like body,
A plurality of discharge bodies connected in parallel to the secondary winding of the high-voltage transformer are arranged and fixed in the generating box, and the discharge bodies are arranged in parallel postures with both planes along the front-back direction and at regular intervals. That is, connecting the feed gas forcibly sending air to the inlet port of the generation box.

The generation box is preferably made of vinyl chloride resin.

It is preferable to set each discharge body in a posture in which both planes are vertical.

It is advantageous to use a compressor as the feed gas.

As the configuration of the electric circuit of the ozone generator, the first timer first contact and the first tamper second contact are "closed" after a certain delay time set by turning on the power.
A timer is provided, and a second timer that opens a second timer contact connected in series to the first timer after a set fixed delay time by "closing" the first contact of the first timer is provided.
It is effective to connect the first relay contact of the auxiliary relay, which is connected in series with the timer second contact, to the supply gas in series, and to connect the second relay contact of the auxiliary relay to the primary winding of the high-voltage transformer in series. is there.

[0016]

The operation of the present invention will be described with reference to FIGS. The thickness of the insulating plate is set to 0.15 to 1.0 mm because the insulating plate is insulated when a silent discharge is generated in the air between the wire mesh electrodes arranged and fixed on both sides of this insulating plate. The value of the applied voltage is set corresponding to the thickness of the insulating plate in order to prevent breakage.

The most stable and vigorous silent discharge is generated between both wire mesh electrodes when the applied voltage is 4000 to 4500.
Therefore, as the thickness of the insulating plate, the applied voltage can withstand the applied voltage sufficiently without causing dielectric breakdown.
And since it is desirable to be as thin as possible, 0.3-
When the distance is 0.5 mm, a stable and extremely active silent discharge is generated between both wire mesh electrodes.

Since the discharge electrode is a wire mesh electrode in which thin metal wires are woven into a flat plate shape, there are many irregularities on the surface,
Due to the large number of irregularities, silent discharge can be easily and stably generated, and the substantial discharge area becomes sufficiently large.

By molding the wire mesh electrode with a thin wire made of aluminum, it is possible to obtain a stable silent discharge operation for a long period without deterioration due to corrosion of the discharge electrode due to generated ozone.

By arranging the wire mesh electrode in the hole of the frame plate, the assembly position and posture of the wire mesh electrode with respect to the flat surface of the insulating plate are stabilized, and by pressing the wire mesh electrode on the flat surface of the insulating plate, insulation is achieved. The posture of assembling the wire netting electrode with respect to the plate becomes more stable, and the distance between both wire netting electrodes is maintained equal to the thickness of the insulating plate, so that a good silent discharge is generated.

Further, the stack of the insulating plate, the pair of wire mesh electrodes, the pair of frame plates and the pair of pressing plates is fixedly fixed by a fastener so that the electrode intervals of both wire mesh electrodes can be accurately maintained. The thickness can be maintained, and the stacking posture of the above-mentioned stacked objects does not deteriorate the insulating property of both wire mesh electrodes, and the assembly of the discharge body becomes easier.

The ozone generator is parallel to the secondary winding of the high-voltage transformer in a generator box in which a plurality of discharge bodies are sealed, and the planes thereof are parallel to each other in the front-rear direction. Since it is arranged, the generated ozone will not corrode the high voltage transformer or the electric circuit part.

Further, since the feed gas forcibly sending air is connected to the inlet port of the generation box, the air in the generation box is replaced with the air supplied from this supply gas. The ozone generated by this is exhausted as it is to the outside of the generation box through the outlet port, whereby the atmosphere around the discharge body is always fresh air, and ozone generation is suitably achieved.

Further, since each discharge body has a posture in which its plane is positioned along the air flow in the generating box, the air flow in the generating box becomes smoother.

By vertically mounting the discharge bodies in the generation box, even if the moisture in the air sent into the generation box causes dew condensation on the surface of the discharge body, the dew condensation can be quickly performed. It can be made to flow down, and the adverse effect on the discharge operation of the discharge body due to dew condensation can be minimized.

When a compressor is used as the supply gas, the atmospheric pressure in the generating box during the ozone generating operation can be arbitrarily set, and thus the operation can be performed at the atmospheric pressure having the best ozone generation rate. In addition, the generated ozone can be directly sent to a high pressure atmosphere such as water.

As a constituent part of the electric circuit for controlling the operation of the ozone generator, a first timer first contact and a first timer second contact are provided.
Ozone generation by providing a first timer having two contact points, a second timer having a second timer contact point, and an auxiliary relay having two contact points of a first relay contact point and a second relay contact point The ozone generating operation of the device can be intermittently performed at desired time intervals according to the purpose of use of the generated ozone and the conditions of the object of use. By the intermittent operation of the ozone generator, the amount of ozone generated per unit time can be arbitrarily set.

Further, when the ozone generator of the ozone generator, that is, the operation of the discharge body is stopped, and the supply gas is continuously operated, the ozone generator is operated only for supplying air. be able to.

[0029]

FIG. 5 to FIG. 7 show an embodiment of the discharge body 1 according to the present invention. FIG.
Is a vertical sectional side view, and FIG. 7 is an enlarged cross-sectional view of a portion marked with a circle in FIG.

The insulating plate 2 made of mica has a thickness of 0.3 mm,
It has a rectangular flat plate shape with a height of 125 mm and a width of 90 mm.
The wire mesh electrode 3 made of aluminum fine wire has a maximum thickness of about 1 mm,
It has a rectangular flat plate shape with a height of 78 mm and a width of 58 mm. The frame plate 4 made of mica has a thickness of 1 mm, a height of 125 mm and a width of 90 mm.
It has a structure in which a hole having a height of 78 mm and a width of 58 mm is opened in the center of a rectangular flat plate body of mm, and the pressing plate 5 made of mica plate has a height of 1 mm in thickness, 125 mm in height, and 90 mm in width in the center of the rectangular flat plate body. It has a 70mm wide and 50mm wide window hole 6.
The fastener 7 is formed by bending a Bakelite plate body into a generally U-shape, and the combination of the insulating plate 2, the wire mesh electrode 3, the frame plate 4, and the pressing plate 5 is attached to the four sides of the combination. It is assembled in a tightened form.

To assemble the discharge body 1, the frame plates 4 are assembled in a stacked manner on both planes of the insulating plate 2, and the wire mesh electrodes 3 having lead wires connected to the holes of the frame plate 4 are stacked on the insulating plate 2. It is fitted and assembled so as to be in the form of a stack, and further, the pressing plate 5 is assembled in a stacked form from above, and finally, a combination of the insulating plate 2, the wire mesh electrode 3, the frame plate 4, and the pressing plate 5 This is achieved by fastening the fasteners 7 on the four sides by utilizing the elasticity of the fasteners 7 and fixing them.

Therefore, the wire mesh electrode 3 is positioned in the state of being accurately positioned in the center of the plane of the insulating plate 2 by the frame plate 4, and its peripheral portion is pressed against the plane of the insulating plate 2 by the pressing plate 5. State, that is, it is assembled and held without floating from the plane of the insulating plate 2, and the assembled state and the stacked state are firmly held by the fastener 7, and the pressing force of the pressing plate 5 against the wire mesh electrode 3 is maintained. is doing.

The mounting holes 8 formed at the four corners of the discharge body 1 are for mounting the discharge body 1 at desired locations.

Next, FIG. 8 and FIG. 9 show a generation box 1 which is a main part of the ozone generator 9 using the discharge body 1.
Fig. 2 shows a configuration example in which the front and rear ends of a vinyl chloride resin cylinder that has sufficient durability against ozone are tightly closed with the same vinyl chloride resin flat discs. The front end wall has an inlet port 13 and the rear end wall has an outlet port 14, and the center of the lower end is usually tightly closed with a screw or the like, once a year or A drain port 15 is provided at a rate of about twice for removing the water accumulated due to the dew condensation of the humidity of the sent air from the inside of the generation box 12.

In the generating box 12, a flat plate-like mounting plate 18 is arranged between a pair of fixing plate pieces 21 fixedly fixed to the inner peripheral surface of the generating box 12 with both planes along the front-rear direction and the vertical direction. Are mounted in a erected manner, and three discharge bodies 1 are mounted on the mounting plate 18 and the mounting plates 18 and four mounting pins 19 which are vertically fixed to the mounting plate 18 along the horizontal direction. With the spacers 20 for keeping constant, the mounting pins 19 are inserted through the mounting holes 8 and mounted, and the connecting wires 17 connecting the respective discharging bodies 1 in parallel are airtight from the respective discharging bodies 1. Is maintained and is led out of the generation box 12.

Since each discharge body 1 in the generation box 12 has both discharge surfaces parallel to the front-back direction and the vertical direction, the discharge surfaces are influenced by the flow of air sent into the generation box 12 and then sent out. Therefore, the discharge surface is always supplied with fresh air, and ozone is efficiently generated.

FIG. 1 shows a constitutional example of a main portion of an ozone generator 9 according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a rear view thereof.

In the ozone generator 9 shown in FIG. 1, a base plate 11 as a mounting substrate is arranged and fixed in a box-shaped outer box body 10, and a fixing band 16 (see FIG. 9), the generator box 12 is fixed in a predetermined posture, and the high voltage transformer 22, the auxiliary relay 28,
The first timer 31, the second timer 34, and the solenoid valve 37 are fixed, and the outlet port 14 of the generation box 12 and the inlet port of the solenoid valve 37 are connected to the second connection pipe 45.
Are connected with.

As shown in FIG. 2, on the front wall of the outer casing 10, a changeover switch 26 for changing over and setting the changeover tap 25 of the high voltage transformer 22 and a power switch 38.
And a power lamp 40 for lighting and indicating the on / off state of the power switch 38, a transformer switch 41 for turning on and off the connection of the high-voltage transformer 22 to the power circuit, and a transformer lamp for lighting and indicating the on / off state of the transformer switch 41. 42, and the pressurized air from the compressor, which is the supply gas 27, are arranged and fixed to the inlet port 13 of the generation box 12 and the supply port 47 connected by the first connection pipe 44.

Further, as shown in FIG. 3, on the rear wall of the outer casing 10, a power supply terminal 36 to which a commercial power supply is connected, a power supply fuse 39 as an electrical protection device, and an outlet port of the solenoid valve 37. Is connected to a third connection pipe 46 and a pipe for guiding ozone generated by an air supply pipe (not shown) to a target location is connected, and a power supply terminal that is a power supply terminal to the compressor that is the gas supply 27. Gas connection terminal 4
9 and the ground terminal 50 are arranged and fixed.

FIG. 4 shows an electric circuit configuration of the ozone generator 9 shown in FIG. 1. The power switch 38, the power fuse 39 and the power lamp 40 are connected in series to the power terminal 3.
A compressor that is the supply gas 27, an auxiliary relay 28, a first timer 31, a second timer 34, a solenoid valve 37, and a transformer switch 42 in which a transformer lamp 42 is connected in series are connected between the six. ..

A first relay contact 29 of an auxiliary relay 28 is connected in series to the gas supply 27, a first timer second contact 33 of a first timer 31 is connected in series to the auxiliary relay 28, and a first timer 31 is connected. Is connected in series with the second timer contact 35 of the second timer 34, the second timer 34 is connected in series with the first timer first contact 32 of the first timer 31, and the transformer switch 41 is provided with an auxiliary Second of relay 28
Relay contacts are connected in series.

The primary winding 23 of the high-voltage transformer 22 is connected to the transformer switch 41 via a changeover switch 26. The secondary winding 24 of the high-voltage transformer 22 has three discharge bodies 1 and a protection circuit. 43 and 43 are connected in parallel.

Next, the operation of the circuit shown in FIG. 4 will be described in order. Timer times of the first timer 31 and the second timer 34 are set in advance. The timer time of the first timer 31 sets a time for turning off ozone generation, and the timer time of the second timer 34 sets a time for turning on ozone generation.

When the power switch 38 and the transformer switch 41 are turned on, the first timer 31 is turned on, and after a preset fixed time, the operation of the first timer 31 causes
First timer first contact 32 and first timer second contact 33
Are turned on, the second timer 34 starts the timer operation and the auxiliary relay 28 operates.

By the operation of the auxiliary relay 28, the supply gas 27 and the electromagnetic valve 37 are operated, and the high voltage transformer 22 is supplied with electric power. Therefore, the ozone generation operation by the discharge body 1 and the generation box 12 by the supply gas 27 are performed. The air is supplied to the air and the generated ozone is sent to the target location.

When the timer time of the second timer 34 elapses from this state, the first timer 31 is turned off by the operation of the second timer 34, so the auxiliary relay 28 and the second timer 34 are turned off, and the auxiliary relay By turning off 28
Since the operations of the supply gas 27, the solenoid valve 37, and the high-voltage transformer 22 are stopped, the ozone generation operation and the ozone supply operation are stopped for the timer time set by the first timer 31, and this operation is repeated thereafter. ..

As described above, by appropriately setting the timer times of the first timer 31 and the second timer 34, the amount of ozone supplied can be appropriately adapted to the purpose of use, the conditions of use, and the like.

It goes without saying that only the ozone generating operation can be stopped by turning off the transformer switch 41. Further, when it is desired to adjust the amount of ozone generated per unit time, the changeover switch 26 may be adjusted to be strong, medium, or weak.

The results of measuring the generated ozone concentration of the ozone generator 9 shown in FIGS. 1 and 4 using the discharge body 1 shown in FIGS. 5 to 7 are shown below.

The measuring instrument used is a vacuum gas sampling device AP.
-(APS), measuring range with Kitagawa ozone detector, 0.0
25-3.0ppm (U type), 2.5-100ppm (SB
Type), 50 to 1000 ppm (SA type), and the room temperature during measurement is 25 degrees. The sampling position was an outlet of a hose with an inner diameter of 10 mm and a length of 2 m connected to the air supply port 48, the sampling amount was 100 cc, and the sampling was performed about 5 minutes after the start.

When the supply gas 27 has an air pressure of 0.5 kg / cm ² and the changeover switch 26 is set strongly, 50 ppm,
30.5pp with the changeover switch 26 set inside
m, 20pp with the selector switch 26 set to weak
It was m. When the air pressure of the supply gas 27 is 1.2 kg / cm ² , 70 ppm when the changeover switch 26 is set to strong, 60 ppm when the changeover switch 26 is set to inside, and when the changeover switch 26 is set to weak. Was 50.5 ppm. In addition, changeover switch 2
When 6 is set to a strong value, the output voltage of the secondary winding 24 of the high voltage transformer 22 is 4500V and the current is about 3mA.
Met.

Further, the pressure of the supply gas 27 is set to 1 kg / cm ² in order to supply 25 liters of air to the generation box 12 for one minute at an ambient temperature of 25 ° C. and a humidity of 50%, and the changeover switch 26 is turned on strongly. When the amount of ozone generated was measured in this state, a value of 3210 mg / h could be obtained.

[0054]

Since the present invention has the above-mentioned structure, it has the following effects. Since the discharge electrode of the discharge body is a wire mesh electrode formed by weaving conductive material fine wires into a flat plate shape, it is possible to stably and reliably generate silent discharge and obtain a wide discharge electrode area. It is possible to obtain ozone generation reliably, stably and with high efficiency.

Since the insulating plate is made of a mica plate having an extremely high dielectric strength, its thickness can be made sufficiently small, and thus a good and strong silent discharge can be obtained at a much lower applied voltage than the conventional one. be able to.

Since the discharge body is constructed by tightening and fixing the stacked structures, its assembly is extremely simple, and the assembly state and the assembly position of the wire mesh electrode with respect to the insulating plate are extremely stable. Therefore, it is easy to manufacture, and a stable ozone generation operation can be stably exerted for a long period of time.

Since the plurality of discharge bodies are arranged in a posture along the flow of the supplied air, it is possible to constantly supply fresh air around the discharge bodies and thus to obtain high ozone generation efficiency. ..

When a compressor is used as the supply gas, the atmosphere around the discharge body can be set to a pressure that is advantageous for ozone generation, and therefore ozone generation efficiency can be made higher.

By intermittently operating the operation of the discharge body with the first timer and the second timer, the amount of ozone supplied can be appropriately controlled, and thus the use of ozone is appropriate and efficient. Can be something.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an internal configuration of a main part of an ozone generator according to the present invention.

FIG. 2 is a front view of the embodiment shown in FIG.

3 is a rear view of the embodiment shown in FIG.

FIG. 4 is an electric circuit diagram of the embodiment shown in FIG.

FIG. 5 is an overall external perspective view showing an embodiment of a discharge body of the present invention.

FIG. 6 is a vertical sectional side view of the embodiment shown in FIG.

FIG. 7 is an enlarged vertical cross-sectional view of a circled portion in FIG.

FIG. 8 is a plan view in which the generation box used in the embodiment shown in FIG. 1 is partially broken.

9 is a partially cutaway front view of the embodiment shown in FIG.

[Explanation of symbols]

1; Discharge body 2; Insulating plate 3; Wire mesh electrode 4; Frame plate 5; Holding plate 6; Window hole 7; Fastener 8; Mounting hole 9; Ozone generator 10; Outer box body 11; Base plate 12; Generation box 13; Inlet port 14; Outlet port 15; Drainage port 16; Fixed band 17; Connection line 18; Mounting plate 19; Mounting pin 20; Spacer 21; Fixed plate piece 22; High voltage transformer 23; Primary winding 24; Secondary winding Winding 25; Changeover tap 26; Changeover switch 27; Gas supply 28; Auxiliary relay 29; First relay contact 30; Second relay contact 31; First timer 32; First timer first contact 33; First timer second Contact 34; Second Timer 35; Second Timer Contact 36; Power Terminal 37; Solenoid Valve 38; Power Switch 39; Power Fuse 40; Power Run 41; transswitching 42; trans lamp 43; protection circuit 44; first connecting pipe 45; a second connecting pipe 46; the third connecting pipe 47; supply port 48; air supply port 49; feed gas connection terminal 50; ground terminal

Claims (10)

[Claims] 1. An insulating plate (2) made of a mica plate having a flat shape with a thickness of 0.15 [mm] to 1.0 [mm], preferably 0.3 [mm] to 0.5 [mm]. And a pair of wire mesh electrodes (3), which are formed by weaving a thin wire made of a conductive material into a flat mesh plate shape and fixedly stacked and fixed to both planes of the insulating plate (2). A discharge body for ozone generation, comprising an electrode (3) connected to a power source of an applied voltage of 2000 [V] to 6000 [V], preferably 4000 [V] to 4500 [V]. 2. A discharge body for ozone generation according to claim 1, wherein the wire net electrode (3) is formed of a thin wire made of aluminum. 3. Wire mesh electrodes in the center of both planes of the insulator (2)
(3) Mica plate made of a mica plate, which is provided with a hole for fitting the metal mesh electrode in a substantially snug position and has a thickness approximately equal to that of the wire mesh electrode (3). A window slightly smaller than the wire mesh electrode (3) in the center of the flat plate
A pair of pressing plates (5) formed by opening (6) are arranged such that the edge of the window hole (6) faces the peripheral edge of the wire mesh electrode (3). ), The insulating plate (2), the pair of wire mesh electrodes (3), the pair of frame plates (4), and the pair of holding plates.
3. A fastener (7) made of an electrically insulating material for immovably tightening and holding the stacking posture of the stack with (5), is attached to the peripheral edge of the stack. Discharge object for ozone generation. 4. The insulating plate (2), the wire mesh electrode (3), the frame plate (4) and the pressing plate (5) are rectangular, respectively,
The discharge for ozone generation according to claim 3, wherein a fastener (7) is attached to each side of the stack of the (2), the wire mesh electrode (3), the frame plate (4) and the pressing plate (5). body. 5. A generating box (1) which is a closed box-shaped body.
2) the inlet port (13) on the front wall and the outlet port on the rear wall
(14) are provided respectively, and a plurality of discharge bodies (1) connected in parallel to the secondary winding (24) of the high-voltage transformer (22) are provided in the generation box (12) along both planes in the front-back direction. And an ozone generator which is arranged and fixed in parallel postures at regular intervals and is connected to a feed gas (27) forcibly sending air to the inlet port (13). 6. The ozone generator according to claim 5, wherein the generation box (12) is made of vinyl chloride resin. 7. The ozone generator according to claim 5, wherein each of the discharge bodies (1) is set in a posture in which both planes are vertical. 8. The ozone generator according to claim 7, wherein an openable / closable water draining port (15) is opened on the bottom wall of the generating box (12). 9. The ozone generator according to claim 5, 6 or 7, wherein the compressor is a feed gas (27). 10. A first timer first contact (32) and a first timer second contact (3) after a fixed delay time set by power-on.
3) is provided with a first timer (31) that is "closed", and is connected in series to the first timer (31) after a fixed delay time set by the "closed" of the first timer first contact (32) And a second timer (34) for opening the opened second timer contact (35),
The first relay contact (29) of the auxiliary relay (28) serially connected to the timer second contact (33) is serially connected to the gas supply (27), and the second relay contact (30) of the auxiliary relay (28) is connected. ) Is connected in series to the primary winding (23) of the high-voltage transformer (22).