JPH02116605A - Rotary ozonizer - Google Patents

Abstract

PURPOSE:To enhance the cooling effect, to miniaturize the title ozonizer, and to increase the output by providing a discharge electrode also used as an impeller to surround a motor. CONSTITUTION:Plural suction ports 13 are radially opened on the side wall 12 of the plastic cylindrical case 1 with one end opened, and an annular insulator 5 lined with 0.5-1.5mm-thick glass is fixed on the inner surface of the peripheral wall 11 connected with a supply duct 15, and an annular induction electrode 6 is embedded in the central part of the insulator 5. A motor 3 with the output shaft 35 matched with the axial center of the peripheral wall 11 is internally mounted on the inner side surface of the side wall 12, a pipeline 32 is allowed to protrude from the side surface of the motor 3 through a hole in the side wall 12, and a sirocco fan-shaped impeller 4 consisting of the disk 41 extending at right angles to the output shaft 35 and a blade 42 and also used as a discharge electrode is fixed to the output shaft 35 of the motor 3 extending toward a lid 2. Furthermore, a gap 70 constituting a silent discharge space is provided between the inner periphery of the insulator 5 and the outer edge of the impeller 42.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotary ozone generator (referred to as Narukami's rotary ozonizer), and more specifically, by simplifying the device,
The present invention relates to a rotary ozonizer that is particularly suitable for use in small environments.

[Prior Art] Japanese Patent Application Laid-Open No. 58-55312 discloses a motor, an axial fan and a discharge electrode that are separately directly connected to the rotating shaft of the motor, and a motor on the inner surface of the peripheral wall of the cylindrical case. A rotary ozonizer is disclosed that includes a fixed induction electrode facing a discharge electrode.

In this rotary ozonizer, ozone is generated by an air discharge between a rotating discharge electrode and an induction electrode surrounding it, and an air flow from an axial fan delivers the ozone and cools and dries both electrodes. Compared to a stationary ozonizer in which both electrodes are stationary, the ozonizer has the advantages of better ozone generation efficiency and cooling efficiency, less accumulation of harmful dust and moisture on the discharge electrode surface, and easier miniaturization. .

[Problems to be Solved by the Invention] In recent years, as the use of ozonizers has become more and more widespread, more compact and high-output ozonizers have been needed for applications such as sterilizing equipment in hospital rooms and deodorizing equipment for indoor and cold storage rooms. It is requested.

However, in order to further reduce the size of the rotary ozonizer, it is necessary to place the above electrodes, fan, and motor closer to each other, thereby achieving small size and high output while ensuring electrical insulation and W1 polar cooling capacity. It wasn't easy to do.

The present invention was made in view of these problems, and an object of the present invention is to provide a small, high-output rotary ozonizer.

[Means for Solving the Problems] The rotary ozonizer of the present invention includes a cylindrical peripheral wall and a side wall that closes both ends of the cylindrical peripheral wall, and an air intake port and an air supply port are provided in the side wall and the peripheral wall, respectively. a motor installed in the case with its output shaft aligned with the axis of the peripheral wall; an induction electrode fixed to the inner surface of the peripheral wall covering the motor; It is characterized in that it includes a discharge electrode that also serves as an impeller and faces the induction electrode, and a high voltage power supply connected between the two electrodes.

Note that the discharge electrode that also serves as an impeller can have any shape as long as it has an airfoil shape that has a function of blowing air in the centrifugal direction.

[Function] In the rotary ozonizer of the present invention, the
The ii pole rotates in an annular space whose outer periphery is defined by the peripheral wall of the case and whose inner periphery is defined by the motor, and the high voltage power supply section generates an air discharge between the discharge electrode and the induction electrode. At the same time, the discharge electrode blows ozone-containing air in a centrifugal direction to cool both electrodes and send ozone out of the case.

In other words, the motor skillfully occupies the space inside the discharge electrode that also serves as an impeller, and the rotary ozonizer can be downsized.

[Example] Example 1 An example of the rotary ozonizer of the present invention will be described with reference to FIGS. 1 and 2.

This rotary ozonizer has a cylindrical case 1 made of resin with one end open and consisting of a peripheral wall 11 and a side wall 12, and as shown in FIG. An air supply port 14 is provided at one end of the peripheral wall 11, and an air supply duct 15 is connected to the air supply port 14. A disk-shaped resin lid 2 provided with ribs 21 is attached to the opening of the cylindrical case 1 to close the opening.

An output shaft 35 is provided on the inner surface of the side wall 12 on the axis of the peripheral wall 11.
The motor 3 is installed internally by aligning the two.

A resin pipe 32 protrudes from the side surface of the motor 3 through a hole opened in the side wall 12 of the cylindrical case 1 in parallel with the axis, and the resin-coated motor is driven from the pipe 32 to the outside!
Q33.34 and ground contact 1m72 are out. The motor 3 is a single-phase induction motor of about 100 cm, and a commercial AC power source of 50 to 60 Hz is connected to the motor drive wires 33 and 34.

The output shaft 35 of the motor 3 extending toward the lid 2 side includes a disc 41 extending perpendicularly to the output shaft 35 and an oka 42 extending parallel to the axis from the outer periphery of the disc 41. A well-conducting metal impeller 4 having a shape is fixed. The blades 42 of the impeller 4 extend radially from the axis, as shown in FIG. 2, and also serve as discharge electrodes.

The inner surface of the peripheral wall 11 of the cylindrical case 1 has a wall thickness of 0.5 to 1.
．． A glass-lined annular insulator 5 having a thickness of 5 mm is arranged in the same stage, and a ring-shaped induction electrode 6 having a wall thickness of about 1.0 mm is embedded in the center of the annular insulator 5. A gap 70 between the inner circumferential surface of the annular insulator 5 and the outer edge of vA42 of the impeller 4 is formed to approximately Q, Qmm.
It constitutes a guide space for guiding the airflow coming out of the impeller 4 to the air supply duct 15, and also constitutes a silent discharge space. Note that the annular insulator 5 and the induction electrode 6 are cut out near the air inlet 14 provided at one end of the peripheral wall 11 of the cylindrical case 1 in order to enable air to be fed.

The induction electrode 6 is connected to one output end of the AC high voltage power supply section 7 through an insulated wire 71, and is further connected to the v! of the impeller 4 which also serves as a discharge electrode. J42 is a disc 41 of the metal impeller 4, a metal output shaft 35, a slip ring (not shown) fixed to the output shaft 35 and built into the motor 3, and a slip ring (not shown) also built into the motor 3. Grounding 172 via a fixed carbon brush (not shown) in contact with the ring.
The ground 172 is grounded and is also connected to the other output terminal of the AC high voltage power supply section 7 . In addition, each picture 42 of the slip ring and the impeller 4
Connecting them with a copper wire has the effect of reducing wiring resistance.

Next, the operation of this rotary ozonizer will be explained.

Rotate motor 3 and apply about 10KV to 1M conductive lI6, about I
When a KHz high alternating voltage is applied, a silent discharge occurs in the gap 70 between the two electrodes. A creeping discharge occurs on the surface of the annular insulator 5 surrounding the l pole 6, and as a result, ozone is generated in the gap 70. Further, the impeller 4 performs centrifugal air blowing from the intake port 13 to the air supply port 14 and the air supply duct 15, and the generated ozone is sent from the air supply duct 15 to an external target space.

The rotary ozonizer of this embodiment described above has the following advantages.

That is, since the sleeve 42 of the impeller 4 also serves as a discharge electrode,
Equipment volume can be reduced and materials can be saved. In addition, the conventional discharge section consisting of discharge electrodes and induction electrodes, which caused fluid resistance, is integrated with the ventilation section in this embodiment, so fluid resistance is reduced, air raw material is increased, and cooling and drying capacity is increased. is improved. Since the motor 3 is housed inside the blades 42 of the impeller 4, the volume can be further reduced.

Embodiment 2 Another embodiment of the rotary ozonizer of the present invention will be described with reference to FIG.

This rotary ozonizer is composed of a cylindrical case 1, a lid 2, a motor 3, an impeller 4, an annular insulator 5, an induction electrode 6, and an AC high voltage power supply section 7, and the shapes of each part have been changed. Other than this, the device is the same as the device of Example 1.

That is, the impeller 4 of this embodiment has a mixed flow structure, and has a structure that is more similar to the simple blade of a centrifugal blower than the impeller of the first embodiment. In addition, in accordance with the outer peripheral shape of the impeller 4, the peripheral wall 11 of the cylindrical case 1 is also inclined toward the opening of the wide end, and the lid 2 is fitted into the wide opening of the cylindrical case 1 without ribs. ing. The annular insulator 5 and the induction electrode 6 are also
It is arranged opposite to the oblique outer edge of the blade 42 with a gap 70 interposed therebetween, so that the annular insulator 5 and the induction electrode 6
It is also formed into a wide cylindrical shape.

According to the device of this embodiment, since the fluid resistance of the air coming out of the impeller 4 is small, it is possible to increase the wind noise and improve the cooling capacity.

As a modification of this embodiment, the motor 3 has an outer rotor-inner stator structure, the impeller 4 is directly fixed to the outer periphery of the outer rotor, and the inner stator is attached to the cylindrical case 1.
It may also be fixed to the lid 2.

In this way, the structure can be further simplified.

Moreover, other power transmission means may be used instead of the transmission device consisting of a slip ring and carbon brush in each embodiment.

Further, in each of the above embodiments, the annular insulator 5 may be formed of a ceramic dielectric such as alumina.

[Effects of the Invention] As explained above, since the device of the present invention is equipped with a discharge electrode that also serves as an impeller and is arranged so as to rotate around Tanabata, it has a high cooling effect and a small required volume. As a result, compact size and high output can be achieved.

[Brief explanation of drawings]

Fig. 1 is a schematic cross-sectional view of a rotary ozonizer according to an embodiment of the present invention, viewed in a direction perpendicular to the axial direction, Fig. 2 is a schematic cross-sectional view of the device shown in Fig. 1, viewed from the axial direction, and Fig. 3. FIG. 2 is a schematic cross-sectional view of a rotary ozonizer according to another embodiment of the present invention, viewed in a direction perpendicular to the axial direction. 1... Cylindrical case (case) 2... Lid (case) 3... Motor 4... Impeller 42... Blades (discharge electrode) 5... Annular insulator 6... Induction electrode

Claims (1)

[Claims] (1) A case consisting of a cylindrical peripheral wall and a side wall closing both ends of the cylindrical wall, in which an intake port and an air supply port are respectively provided in the side wall and the peripheral wall, and an output shaft aligned with the axis of the peripheral wall. A motor housed in the case, an induction electrode fixed to the inner surface of the peripheral wall surrounding the motor, a discharge electrode that also serves as an impeller and is attached to the output shaft of the motor and faces the induction electrode, and both electrodes. 1. A rotary ozonizer comprising: a high-voltage power supply section connected between the ozonizer and the high-voltage power supply section connected between the ozonizer and the high-voltage power supply section.