JPH0410185Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is mainly used for sterilization and deodorization in large spaces such as industrial refrigerators, food factories, food warehouses, and other large-scale drinking water sterilization in food factories. This invention relates to a large corona discharge type ozone generator.

(Prior art and problems) Most conventional discharge-type ozone generators are large-sized ones used in chemical factories, food factories, etc.
Its structure consists of a discharge chamber 1, a blower 2 for feeding air into the discharge chamber 1, and a motor 3, as shown in FIG. 4.

However, this type of product is large and the output scale cannot be changed, so depending on the demand within the factory,
Conventional products required either replacing them with completely new products or adding another device.

(Problem to be solved) Therefore, this idea is based on the purpose of determining the amount of ozone generated.
By making most of the parts of the ozone generator common and adding or removing some parts, equipment of different sizes can be assembled, which facilitates inventory management and reduces costs. The purpose is to provide the market with products that satisfy these points.

(Means for solving the problem) This invention has a fixed electrode body fixed to the inner periphery of a cylindrical housing made of insulating material fixed to the machine frame, and an electric A rotating shaft of a rotating electrode body made of a good conductor is rotatably mounted on both end walls of the housing, and a discharge space is provided between the rotating electrode body and the fixed electrode body. In a rotating disk type ozone generator provided with an air flow opening, the rotating electrode body is formed of at least two disk-shaped pieces that are detachably attached to the rotating shaft, and the housing is formed of at least two disk-shaped pieces that are detachably attached to the rotating shaft. It consists of a pair of end wall housing members for receiving a rotating shaft, and at least one ring-shaped auxiliary housing member forming a cylindrical portion, and a fixed electrode plate, which is a type of fixed electrode body, is attached to each of the auxiliary housing members, and a fixed electrode plate is attached to the inner periphery of the housing member. This fixed electrode disk is inserted between disk-shaped rotating electrode bodies fixed to the rotating shaft, and when assembled as a single donut disk, a corona zigzags in the radial direction. The problem was solved by creating a rotating disk type ozone generator characterized by the formation of a discharge path.

(Operation and assembly method) To assemble this device constructed as described above, first, the number of the disk-shaped rotating electrode body and the auxiliary housing member is determined according to the amount of ozone to be generated. , select a rotating shaft with a length corresponding to these numbers, join one of the auxiliary housing members to one of the end wall housing members, and then fit the rotating shaft into the bearing portion of the end wall housing member. Then, one rotating electrode body is fitted onto this rotation shaft and fixed at a predetermined position.

In this way, the auxiliary housing member and the rotating electrode body are successively connected until the desired number is reached, and finally, the opposite end wall housing member is fitted to the rotating shaft, and then the cylindrical part thereof is fitted to the auxiliary housing. The pair of end wall housing members and several auxiliary housing members are axially tightened with bolts or the like. Finally, a drive motor is connected to one end of the rotating shaft that protrudes outside the housing.

The device of this invention constructed in this manner is installed in, for example, a large refrigerator, a blower is connected to one of the air circulation ports of the end wall housing member, and the blower is operated to connect several rotating electrode bodies and When a high voltage is applied between several fixed electrode plates and the rotating electrode body is rotated by a motor, corona discharge occurs in each discharge space where the rotating electrode bodies and fixed electrode plates are arranged alternately. During this time, some oxygen (O ₂ ) in the air is converted to ozone (O ₃ ), and the air in the housing is radially blown along with other air blown by the blowing action of each blower. The air flows between each electrode in the zigzag discharge space air passage in a combined direction of the radial direction consisting of the centripetal direction and the centrifugal direction, and the circumferential direction as the rotating electrode body rotates, and is sequentially sent in one direction of the axial direction. The air is sent out of the housing from one of the air flow ports.

(Effects) In this device, which is configured and operates as described above, one of the electrodes is a rotating body and has the shape described above, so corona discharge occurs over the entire surface between the rotating electrode body and the fixed discharge disk. This occurs on average in the device, and there is no partial wear due to partial discharge, the number of discharge locations is increased, the discharge space is wide compared to the volume of the entire device, and high output can be achieved. In particular, due to the circumferential air flow accompanying the rotation of the rotating electrode body and the friction between the surfaces of the rotating electrode body and the fixed electrode plate, nitrogen oxides are not deposited on any part of the electrode plate, and the electrode plate can be used for a long period of time. Furthermore, even if some of the rotating electrode bodies and fixed electrode plates become worn out, since the structure is as described above, by replacing those parts with new parts, the device can be used for a longer period of time.

In particular, in this invention, since the rotating electrode body is freely attachable to and detachable from the rotating shaft, and the auxiliary housing member having the above-mentioned configuration is provided, products of different outputs of other models can be assembled with a small number of parts.
It can meet the demand for a wide variety of products in small quantities, facilitates inventory management and reduces inventory costs, and even after assembly, it can be reassembled once again, making it easy to change output. By reassembling,
Needless to say, surplus parts can be used as other assembly parts.

Therefore, it can be fully equipped in large spaces such as large refrigerators, food factories, food warehouses, etc., as well as refrigerators in ordinary homes.
It does not take up much space in existing factories or warehouses, and output can be easily rearranged according to demand within the food factory. Furthermore, in general household refrigerators, it can be manufactured by pre-incorporating it into a new product refrigerator, or it can be attached to an existing refrigerator by simple electrical addition work.

Therefore, when attached to a refrigerator, it produces ozone and blows air at the same time, so that ozone can be supplied evenly into the refrigerator, and the temperature can also be made uniform.

(Example) This invention will now be described according to a representative example shown in the drawings.

In FIGS. 1 and 2, 10 is a housing having an overall cylindrical shape, and a pair of end wall housing members 1
1a and 11b, and an auxiliary housing member 20 that connects these and constitutes a cylindrical portion. The end wall housing members 11a, 11b and the auxiliary housing member 20 are made of polyamide resin (registered trademark nylon 66), which is a type of thermoplastic synthetic resin containing glass fibers known as an insulating material, or fluororesin. It is formed as follows.

The aforementioned pair of end wall housing members 11a, 11
b have approximately the same shape and have a shallow cup shape, and a bearing portion 14 is formed in the center of each end wall 13 to receive a rotating shaft 30 in the axial direction, and the one end wall housing member 11a An air supply port 15, which is a type of ventilation port, is bored in the end wall other than the bearing portion 14.

The end wall 13 of the other end wall housing member 11b is provided with at least one air outlet 16, which is a type of vent.

The aforementioned pair of end wall housing members 11a, 11
The ring-shaped lip 17 of the cylindrical portion 12 of b is provided with ring-shaped steps 18a and 18b that can be fitted into each other. That is, in the illustrated example, the step 18a of the end wall housing member 11a has an axis on the outer peripheral side. The step 18b of the other end wall housing 11b protrudes in the direction
The outside is concave in the axial direction.

The aforementioned auxiliary housing member 20 is a ring-shaped auxiliary housing member having an inner and outer diameter that matches the inner and outer diameters of the cylindrical portion 12 of the aforementioned end wall housing members 11a and 11b, and one end surface thereof matches the inner and outer diameters of the cylindrical portion 12 of the aforementioned end wall housing members 11a and 11b. A step 21 having the same size as the step 18a
The end wall housing member 11b is attached to the end surface on the other side.
A step 21b of the same size as the step 18b is formed, and a fixed electrode plate 22 made of a doughnut-shaped conductive metal plate is fixed to the inner circumferential surface of the step 21b, and a part of the fixed electrode plate 22 has a radius extending from the auxiliary housing member 20. A lead wire attachment portion is formed on the outer circumferential surface of the auxiliary housing member 20 by a terminal 23 made of a current-carrying screw penetrating in the direction.

This auxiliary housing member 20 is designed so that several pieces of the same shape can be sequentially fitted and connected in a required number.

The aforementioned rotating shaft 30 is made of a conductive metal such as copper, plane metal, brass, aluminum, etc., and its length corresponds to the number of the auxiliary housing members 20 used. At one end of this rotating shaft, there is a motor 3 that rotates at about 600 to 1380 rpm, for example.
1, and the other end is brought into contact with a terminal 32 made of a current-carrying screw (for example, made of carbon) screwed onto the central axis of the end wall housing member 11a.

At least two disks 40, which are a type of rotating electrode body, can be fixed to the rotating shaft 30. The inner circumferential portion of the disk 40 forms a cylindrical thick boss portion 41, and the entire surface of the disk 40 except for the thick boss portion 41 is covered with an insulating material made of quartz glass. It is coated with a layer 42 whose axial dimensions correspond exactly to the axial dimensions of the auxiliary housing part 20.

Furthermore, when these members are assembled, a fixed electrode plate 22 is placed exactly in the middle of each disk 40 of the rotating electrode body.
The rotary shaft 30 is provided with a receiving hole 44 for a push screw 43 that determines the mounting position so that the mounting position is located.

In the above example, the disk 40 of the rotating electrode body was coated with an insulating material such as quartz glass, but even if this coating was applied to the fixed electrode disk,
This idea is identical.

Assembly of the embodiment: Assembled in the same manner as the previous invention. The difference is that a bearing 33 is interposed at the fitting portion between the end wall housing members 11a, 11b and the rotating shaft 30. The one shown is a ball bearing, but if the end wall housing member is made of fluororesin (including PTFE, PTFE, and ECTFE), it has excellent mechanical strength, wear resistance, and a small coefficient of friction. Even if the rotating shaft 30 is directly supported without particularly requiring a bearing member, there is virtually no difference.

Furthermore, since the end wall housing members 11a, 11b and the auxiliary housing member 20 have the above-described shapes, they can be joined in sequence using these steps 18a, 18b and 21a, 21b regardless of the number of auxiliary housing members 20, and these members Vault 4 passing through
Tighten and fix with 5.

Each disc 40 is fixed to the rotation 30 by fitting a set screw 43 into a receiving hole 44 provided in the rotation shaft 30 at the boss portion 41 thereof.

At this time, each disk 40 is located exactly in the middle between the fixed electrode disks 22, and the discharge intervals between them are all 2.
They are made to have the same dimensions of 3 mm to 3 mm. The above-mentioned dimensional representations of discharge intervals are merely exemplary dimensions and are not intended to be limiting in any way.

Next, the fixed electrode plate 2 of each auxiliary housing member 20
2 electrically connects these terminals 23 protruding from the outer periphery through a common terminal plate 24 in parallel.

Effect of the embodiment The disks 40 in the rotating electrode body are electrically connected in parallel by being fixed to the rotating shaft 30,
A voltage of 10 KV is applied between each disk 40 and the fixed electrode plate 22, a current of 0.5 mmA is applied, and the rotating shaft 30 is rotated, for example, by a motor 31 at 600 rpm, and the compressor is used to supply the end wall housing member 11b. Mouth 15
Provides more pressure air.

In this way, the air is transferred to the disk 4 of the fixed electrode body.
While passing through the zigzag corona discharge path formed by the rotating electrode plate 22, some of the oxygen (O ₂ ) is converted to ozone (O ₃ ) and, together with other air, is discharged from the opposite side. End wall housing member 11a
is discharged to the outside from the discharge port 16'.

Effects Unique to the Embodiment In the embodiment, especially when two or more auxiliary housing members 20 are used during assembly, the order of the auxiliary housing members 20 is not specified, and even before tightening with the vault 45, the steps 18a, 18b, 21a and 21b allow the assembly to be maintained to a certain extent, making assembly very easy. Also, the end wall housing members 11a, 1
In the case where 1b is made of fluororesin,
Due to its excellent mechanical properties, there is no need to provide a separate bearing, and since it also has electrical insulation properties, the structure can be extremely simplified and miniaturized.

In the above example, the rotation of the rotating electrode body 40 is
Within the above range, the higher the rotation speed, the higher the air density in the zigzag corona discharge passage, which tends to increase the ozone generation rate.Even if the rotation speed is higher than the range shown, it is still the same for this device. be.

[Brief explanation of the drawing]

The drawings show things related to this invention: Fig. 1 is a vertical side view, Fig. 2 is a longitudinal side view of the auxiliary housing member, Fig. 3 is a longitudinal side view of the rotating electrode disk, and Fig. 4 is the preceding one. FIG. 2 is a schematic diagram of the technique. The main symbols in the figure are 10...Housing.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A fixed electrode body is fixed to the inner periphery of a cylindrical housing made of insulating material fixed to the machine frame, and an electric A rotating shaft of a rotating electrode body made of a good conductor is rotatably mounted on both end walls of the housing,
In a rotating disk type ozone generator in which a discharge space is provided between the rotating electrode body and the fixed electrode body, and air flow holes are formed in both end walls of the housing, the rotating electrode body is attached to a rotating shaft. At least two removable disk-shaped members are formed close to each other, and the housing includes a pair of end wall housing members for receiving the rotating shaft and at least one ring-shaped auxiliary housing member forming a cylindrical portion. Therefore, each of the auxiliary housing members has a fixed electrode plate, which is a type of fixed electrode body, fixed to the inner peripheral surface, and this fixed electrode plate is a disk-shaped rotating plate fixed to the rotating shaft. A rotating disk type ozone generator characterized in that a corona discharge path is formed in a zigzag manner in the radial direction when the entire assembly is assembled into a single donut disk shape inserted between electrode bodies. (2) The rotating disc type according to claim 1, wherein the material of the housing is at least one of insulating thermoplastic synthetic resin, thermosetting synthetic resin, and ceramic. Ozone generator. (3) The rotating disk type ozone generator according to claim 1, wherein the number of the rotating electrode plates and auxiliary housing members is 2 to 10.