JP3476239B2 - Rotary ozone generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary ozone generating device, and in particular, is capable of efficiently producing and discharging ozone, while improving the reliability and safety of the entire apparatus. The present invention relates to a rotary ozone generator that can be used.

[0002]

2. Description of the Related Art Conventionally, as an ozone generator for generating ozone by utilizing corona discharge by applying a high voltage, there are known ozone generators which employ respective discharge methods such as creeping discharge, flat plate discharge and tubular discharge. ing.

As a rotary ozone generator, a rotary electrode is rotatably supported in a pressure vessel around which a fixed electrode is provided, and corona discharge is generated between the two electrodes as the rotary electrode is driven to rotate. A rotary ozone generator (Japanese Utility Model Publication No. 3-48179) has been proposed by the present applicant. In the proposed rotary ozone generator, fan blades are radially provided on the rotation base of a rotating electrode that is axially supported by a rotation shaft of a motor, and air for ozone generation is connected to the rotation driving of the motor by the fan blades. It is configured to be supplied into the housing and to discharge ozone from an outlet formed on one end surface of the housing.

[0004]

However, in the configuration proposed above, the air is supplied to the housing by the rotating fan blades, so that the amount of supplied air cannot be increased and the ozone generation efficiency is improved. Not only is it difficult to improve, but only high voltage is applied when the rotation electrode rotation stops due to discharge leakage to the motor's rotating shaft when high voltage is applied, or abrasion of the rotating shaft and motor failure. It did not deal with abnormal temperature rise, etc. when continued, and included a serious safety defect.

The present invention has been made in view of the above situation to solve the conventional drawbacks, and its purpose is to: (1) Leakage to the rotating shaft of the motor when a high voltage is applied. It is possible to prevent this in advance, stabilize the generation of ozone by enhancing the cooling effect of the pressure vessel, suppress leakage to the outside of the pressure vessel, and ensure the safety of the entire device. It is possible to reduce the number of points and downsize the entire device. (2) By installing a hollow thick disk having a plurality of air discharge ports bored toward the inside of the pressure vessel, it is possible to quickly supply air and improve the efficiency of ozone generation. be able to. (3) Insufficient or excessive pressure of the supply air and the presence / absence of rotation of the motor rotation shaft can be quickly detected, and the drive state of the device can be switched to the stopped state immediately, improving reliability and safety. You can It is intended to provide a rotary ozone generator.

[0006]

In order to solve the problem, the first technical means adopted by the present invention is a cylindrical hollow pressure container around which a fixed electrode is provided, and a negative pressure detector at the air suction port. An air pump provided with an overpressure detector at the air discharge port, and an electric motor with a rotation detector in which a rotary electrode is pivotally supported at the tip of the rotary shaft and the drive crank of the air pump is linked to the rotary shaft. And the shrinking tip side is made to face the inside of the rotary electrode and intervenes coaxially, and the expanding base end side is made of ozone-resistant resin loaded on one end surface of the hollow pressure vessel with the rotary shaft of the electric motor being inserted. It is composed of a funnel-shaped shield, and a high voltage is applied between the electrodes linked to the rotational drive of the rotary electrode,
A rotary ozone generator for supplying discharge air from an air pump into a pressure container to generate ozone from the air in the container, wherein a rotary fan of a rotary fan is provided on a rotary shaft of an electric motor that pivotally supports the rotary electrode. The rotating shafts are linked together in a coaxial manner, and their air outlets are extended to face the position where the pressure vessel is arranged.
Cooling fins are radially provided on the outer peripheral surface of the pressure container, and as a second technical means, a plurality of air discharge ports are provided on one end surface side of the electric motor, from which the rotary shaft of the electric motor protrudes. A hollow thick disk that is bored inward is attached, and when the rotary electrode is driven to rotate, air is introduced into the pressure vessel through the shield from the air intake provided on the outer surface of the thick disk. It is characterized in that it is configured to supply.

[0007]

Therefore, according to the present invention, ozone can be efficiently generated and discharged, and the reliability and safety of the entire apparatus can be improved, and the ozone generation operation by the rotary ozone generator can be performed. It can be stabilized over a long period of time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 and 2, reference numeral 1 denotes a rotary ozone generator, and the rotary ozone generator 1
Is configured by connecting a diaphragm type air pump 4a, a rotary fan 4b and a pressure vessel 5 to a rotary shaft 3 of an electric motor 2 coaxially and by supplying electric power from a control unit 6 and sending a control signal. To control.

The air pump 4a is provided with an air suction port 8 provided with a negative pressure detector 7 and an air discharge port 10 provided with an overpressure detector 9, and a drive crank 11 interlocked with the rotation of the rotary shaft 3. A diaphragm (not shown) is driven by vertical movement, and air sucked from the air suction port 8 via the air filter 12 is attached to one end face side of the pressure vessel 5 via the supply pipe 13 connected to the air discharge port 10. Hollow thick disk 5a
Is configured to be pumped to. The pressure vessel 5 is
As shown in FIGS. 6 (a) and 6 (b), the fixed electrode 15 is formed on the inner wall of the cylindrical body 14 having the cooling fins 14a, 14a ... Is closed by an end plate 17 having a high-voltage shield plate 16 attached inside, and an ozone discharge port 18 is formed through the high-voltage shield plate 16 and the end plate 17, and a rotary electrode to be described later. A contactor 20 for supplying electric power to the end face 24 a of the projection 19 is provided so as to project toward the inside of the pressure vessel 5.

As shown in FIGS. 3 (a) and 3 (b), the thick disk 5a attached to the intermediate portion 21 between the pressure vessel 5 and the air pump 4a is formed in a funnel shape with ozone resistant resin. The expanded base end side 22a of the shield 22 is loaded with the rotary shaft 3 inserted therethrough, and the rotary shaft 3 has a cylindrical shape at the tip end thereof, as shown in FIGS. A rotating electrode 19 formed by fitting a stainless steel cylindrical body 24 to the peripheral surface of an insulator 23 formed in the above is pivotally supported, and by the pivotal support to the rotating shaft 3, the reduction tip side 22b of the shield 22 is supported. Are configured to intervene inside the rotating electrode 19.

A drive crank 11 is provided on the side of the air pump 4a.
As shown in FIGS. 4 (a) and 4 (b), the rotary shaft 3 that pivotally supports a plurality of notches 25 a, 25
A rotary plate 26 forming a ... Is coaxially supported,
A rotation detector 27 including a light source (not shown) and a phototransistor is provided so as to face the peripheral areas of the cutouts 25a, 25a.

On the other hand, the rotary fan 4b is shown in FIG.
As shown in (b) and (b), fan blades 28a, 28a are arranged in a blower case 28 having an opening on one side, and a blower port 29a is extended so as to face the cooling fins 14a, 14a, ... Of the pressure vessel 5. The blower pipe 29 formed as described above is integrally connected to the peripheral surface of the blower case 28. Also,
As shown in FIGS. 5 (c) and 5 (d), the thick disk 5a is
The air supplied from the supply pipe 13 is formed by piercing a plurality of air discharge ports 5b, 5b ...
When the rotary electrode 19 is driven to rotate, it is supplied into the pressure vessel 5 via the shield 22.

Next, the block diagram of the power supply and control system shown in FIG. 7 will be described in detail. In the figure, RL
1, RL2 and RL3 are relay groups for turning on and off the contacts ct1, ct2 and ct3 respectively connected to the AC input line, 30 is a DC conversion circuit, 31 is a main control circuit, 32 is a high voltage for the fixed electrode 15 and the rotating electrode 19. A high voltage circuit for supplying voltage, 33 for a delay circuit, 34 for an alarm control circuit, 35 for a status display unit, and a main control circuit 31 that receives power supply via the DC conversion circuit 30 is a rotary ozone generator. At the time of the normal operation of No. 1, by turning on a start switch (not shown), a start signal is sent to the alarm control circuit 34 to turn on the start lamp of the operation display unit 35, and
A contact closing signal is sent to the RL1 via the alarm control circuit 34, to the RL2 via the delay circuit 33, and directly to the RL3 to close the contacts ct1 to ct3. And air pump 4a
Of the above contacts, c
The delay circuit 33 causes t2 to connect the other contacts ct1 and ct3.
Is controlled to be closed after a required time from the closing of the electric motor 2, and is controlled to start the high voltage circuit 32 after the rotation of the electric motor 2 reaches the normal rotation state. Is connected to the negative pressure detector 7, the overpressure detector 9, and the rotation detector 27, receives the alarm signal sent from any of the detectors, controls the opening of RL1, and opens the high voltage by opening the contact ct1. The power supply to the circuit 32 and the electric motor 2 is cut off. In addition, 32a and 32b are the fixed electrodes 1 from the controller 6, respectively.
5, a power supply line connected to the rotating electrode 19, and a discharge pipe 36 connected to the ozone discharge port 18.

In the above construction, when a start switch (not shown) is turned on, a start signal is sent from the main control circuit 31 to each of the RL1 to RL3 to start the rotational driving of the electric motor 2. As the electric motor 2 is driven to rotate, the drive crank 11 of the air pump 4a moves up and down to start supplying the sucked air into the pressure vessel 5, and after a predetermined time has elapsed, the high voltage circuit 32 causes the fixed electrode to move. Application of high voltage to the rotating electrode 19 rotating with 15 is started, and ozone is generated by corona discharge between the both electrodes. The generated ozone is compressed by the subsequent supply air sent from the air pump 4a and is discharged from the ozone discharge port 18.

Among the corona discharges between the two electrodes, the discharge leak to the rotary shaft 3 of the electric motor 2 is suppressed by the shield 22 which covers the rotary shaft 3 and intervenes in the rotary electrode 19. As a result, the loss of discharge energy is reduced and the efficiency of ozone generation is relatively improved.
2, the sealing material 35 and the high voltage shield plate 1 in the pressure vessel 5
6 prevents the high voltage from leaking to the outside of the pressure vessel 5. Further, although the temperature of the pressure vessel 5 rises due to the ozone generation drive, the rotary fan 4b blows the blower pipe 29.
Air blown through the cooling fins 14a, 1
4a ... are cooled and the temperature rise of the external pressure vessel 5 is suppressed.

In a series of ozone generation driving as described above, when the intake air amount decreases due to clogging of the air filter 12, the negative pressure detector 7 is activated and an alarm signal is sent to the alarm control circuit 34, and RL1 is output. Opened, contact c
By the opening of t1, the power supply to the high voltage circuit 32 and the electric motor 2 is immediately cut off, and an alarm is displayed on the state display section 35. Similarly, when the supply pipe 13 or the discharge pipe 36 is broken, the overpressure detector 9 operates and an alarm signal is sent to the alarm control circuit 34. The opening of the contact ct1 associated with the opening operation of RL1 immediately cuts off the power supply to the high-voltage circuit 32 and the electric motor 2, and an alarm is displayed on the status display section 35. Further, when the rotation of the rotating shaft 3 is stopped due to the abnormal rotation of the electric motor 2, the rotation detector 27 is activated and an alarm signal is sent to the alarm control circuit 34. The opening of the contact ct1 accompanying the opening operation of RL1 immediately cuts off the power supply to the high-voltage circuit 32 and the electric motor 2, and an alarm is displayed on the status display section 35. Therefore, while suppressing the temperature rise due to the ozone generation drive of the rotary ozone generator 1 and suppressing the loss energy of the discharge effect at the time of temperature rise as much as possible, various obstacle conditions can be discovered in advance and long-term It is possible to secure safety while maintaining a stable operating state of the device 1 for the entire time.

[0017]

In summary, according to the present invention, a cylindrical hollow pressure container having a fixed electrode around it, an air suction port provided with a negative pressure detector, and an air discharge port provided with an overpressure detector are provided. A pump, an electric motor with a rotation detector that rotatably supports the rotary electrode at the tip of the rotary shaft, and the drive crank of the air pump is linked to the rotary shaft, and the reduction tip side is coaxial with the rotary electrode facing the inside of the rotary electrode. And a funnel-shaped shield made of ozone-resistant resin with the expansion base end side being loaded on one end face of the hollow pressure vessel with the rotary shaft of the electric motor being inserted therethrough,
A rotary ozone generator that supplies high-voltage between the electrodes connected to the rotary drive of the rotary electrode to supply the discharge air from the air pump into the pressure vessel to generate ozone from the air in the vessel. The rotary shaft of the electric motor that axially supports the rotary electrode is coaxially linked to the rotary shaft of the rotary fan, and its air outlet is extended to face the position of the pressure vessel. Hollow meat formed by radially projecting cooling fins on the outer peripheral surface of the container, and by forming a plurality of air discharge ports on the one end surface side protruding from the rotation shaft of the electric motor toward the inside of the pressure container. Since a thick disk is attached and air is supplied into the pressure vessel through the shield from the air intake provided on the outer surface of the thick disk when the rotary electrode is driven to rotate, (1) Prevents leaks to the rotating shaft of the motor when high voltage is applied. In addition, the cooling effect of the pressure vessel can be enhanced to stabilize ozone generation, leakage to the outside of the pressure vessel can be suppressed, and the safety of the entire device can be secured. Reduction and miniaturization of the entire device can be achieved. (2) By mounting a hollow thick disk having a plurality of air discharge ports bored toward the inside of the pressure vessel, air can be supplied promptly and the efficiency of ozone generation is improved. be able to. (3) Insufficient or excessive pressure of the supply air and whether or not the rotation shaft of the motor is rotating can be quickly detected, and the drive state of the device can be switched to the stopped state immediately, improving reliability and safety. You can And the like, which are extremely useful new effects.

[Brief description of drawings]

FIG. 1 is an overall plan view of a rotary ozone generator.

FIG. 2 is a cutaway sectional view of a main part of the same.

FIG. 3A is a front view of a shield. (B) is a right side view same as the above. (C) It is a front view of a rotating electrode.
(D) It is a right side view same as the above.

FIG. 4A is a front view of a rotary plate. (B) is a right side view same as the above.

FIG. 5A is a front view of the rotary fan with a part thereof omitted.
(B) is a left side view same as the above. (C) is a front view of a thick disk. (D) is a right side view same as the above.

FIG. 6A is a front view of a pressure vessel. (B) is a left side view same as the above.

FIG. 7 is a block diagram showing a power supply and a control system.

[Explanation of symbols]

1 rotary ozone generator 2 electric motor 3 rotation axes 4a air pump 4b rotating fan 5 Pressure vessel 7 Negative pressure detector 8 Air inlet 9 Overpressure detector 10 Air outlet 11 drive crank 14 cylinder 14a Cooling fin 15 Fixed electrode 19 rotating electrode 22 Shield 22a Expansion base end side 22b Reduction tip side 23 Insulator 24 Stainless steel cylinder (metal cylinder) 27 rotation detector 29a Blower

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) C01B 13/11

Claims (2)

(57) [Claims] 1. A cylindrical hollow pressure vessel having a fixed electrode around it, an air pump having a negative pressure detector at an air inlet and an overpressure detector at an air outlet, and a tip of a rotary shaft. An electric motor with a rotation detector, which rotatably supports the rotary electrode and which connects the drive crank of the air pump to the rotary shaft, and coaxially intervenes with the reduction tip side facing the rotary electrode. Between the electrodes connected to the rotary drive of the rotary electrode, which is composed of a funnel-shaped shield made of ozone-resistant resin with the expansion base end side being loaded on one end surface of the hollow pressure vessel with the rotary shaft inserted. Is a rotary ozone generator for supplying air discharged from an air pump into a pressure vessel by applying a high voltage to the pressure vessel to generate ozone from the air in the vessel. The rotating shaft of the rotating fan is linked to the rotating shaft coaxially. 1. A rotary ozone generator, wherein the rotary ozone generator is connected to the pressure vessel, the ventilation port of the pressure vessel is extended to face the position of the pressure vessel, and cooling fins are radially provided on the outer peripheral surface of the pressure vessel. 2. A cylindrical hollow pressure vessel having a fixed electrode around it, an air pump having a negative pressure detector at the air suction port and an overpressure detector at the air discharge port, and a tip of the rotary shaft. An electric motor with a rotation detector, which rotatably supports the rotary electrode and which connects the drive crank of the air pump to the rotary shaft, and coaxially intervenes with the reduction tip side facing the rotary electrode. Between the electrodes connected to the rotary drive of the rotary electrode, which is composed of a funnel-shaped shield made of ozone-resistant resin with the expansion base end side being loaded on one end surface of the hollow pressure vessel with the rotary shaft inserted. Is a rotary ozone generator for supplying air discharged from an air pump into a pressure vessel to generate ozone from the air in the vessel by applying a high voltage to the one side of the rotary shaft of the electric motor. Multiple air outlets on the end face side of the pressure vessel Attach a hollow thick disk that is bored toward the air electrode, and supply air into the pressure vessel through the shield from the air intake provided on the outer surface of the thick disk when the rotary electrode is driven to rotate. A rotary ozone generator characterized in that