JPH0336507Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a discharge element for an ozone generator. [Prior Art] It is generally known that ozone can be obtained by passing air through a corona discharge region between two electrode plates to which a high voltage is applied, and ozone generators based on this principle have been widely used. It is used. The discharge elements used in conventional ozone generators are made by coating a plate-shaped dielectric material with dielectric paint such as aluminum powder or carbon powder, or by laminating a thin dielectric metal plate or a metal mesh onto the dielectric material. A device is used in which electrodes are formed and electrode plates are provided facing the dielectric surfaces of these electrodes and spaced apart by a required path. [Problems that the invention aims to solve] However, these conventional discharge elements have problems in manufacturing, such as complicated manufacturing processes, high running costs, and expensive manufacturing equipment. Ta. The present invention was devised in view of the above points, and an object of the present invention is to provide a generating element that is simple and inexpensive to manufacture, and has good ozone generation efficiency when used in an ozone generator. [Means for Solving the Problems] As a result of intensive research to solve the above problems, the inventors of the present invention have developed two flat dielectric plates that sandwich both sides of a dielectric body made by winding a metal wire in a coil shape. The inventors have found that the above-mentioned problem can be solved by providing a body and winding a metal wire around the surface of each dielectric so as to cross the metal wire, and have completed the present invention. That is, the present invention has a wire diameter of 0.1 to 0.7 on the surface of a flat dielectric body 2 made of a sintered body of alumina purity of 96% or more.
An internal electrode part 4 formed by winding a metal wire 3 of mm in diameter into a coil, and two flat dielectric bodies 5, 5' made of a sintered body of alumina with a purity of 96% or more, sandwiching the internal electrode part 4. A wire diameter is provided on the surface of each dielectric 5, 5'.
It consists of an external electrode part 7 formed by winding a metal wire 6 of 0.1 to 0.7 mm in a coil shape so as to cross the metal wire 3 of the internal electrode part 4, and the angle at which each of the metal wires 3 and 6 cross is 80 to 80. The gist of the present invention is a discharge element for an ozone generator characterized by an angle of 90°. [Example] Hereinafter, an example of the present invention will be described based on the drawings. FIG. 1 shows an embodiment of a discharge element for an ozone generator according to the present invention, and numeral 1 in the figure is a discharge element for an ozone generator (hereinafter simply referred to as a discharge element). The discharge element 1 includes an internal electrode part 4 formed by winding a metal wire 3 in a coil around the surface of a flat dielectric 2, two flat dielectrics 5 sandwiching the electrode part 4,
5', and an external electrode part 7 formed by winding a metal wire 6 in a coil shape on the surface of each dielectric 5, 5' so as to cross the metal wire 3 of the internal electrode part 4. As each of the dielectrics 2, 5, and 5', a sintered body having an alumina purity of 96% or more is used. Examples of the material for each of the metal wires 3 and 6 include stainless steel and aluminum, but stainless steel is preferable in terms of durability and the like. Further, the wire diameter of each metal wire 3, 6 is 0.1 to 0.7 mm, preferably 0.2 to 0.4 mm.
mm. If the wire diameter of the metal wires 3 and 6 is less than 0.1 mm or more than 0.7 mm, there is a possibility that the ozone generation efficiency will be poor. FIG. 2 shows the internal electrode section 4, and the dielectric 2
Wrap the metal wire 3 around the metal wire 3, and one end 8 of the metal wire 3
The other end is connected to ground or a power source as a terminal 9. Similarly to the metal wire 3 in the internal electrode section 4, one end of the metal wire 6 in the external electrode part 7 is wrapped around the adjacent part and locked, and the other end is connected to the terminal as shown in FIG. It stands out as 10. In the present invention, as shown in FIG. 3, the metal wires 3 of the internal electrode section 4 and the metal wires 6 of the external electrode section 7 are provided so as to cross when viewed from above the plane, and the metal wires that cross each other. The angle θ formed by the comrades is
It is set in the range of 80 to 90 degrees. If the angle θ is outside the above range, the ozone generation efficiency will be poor when used in an ozone generator. When each metal wire is wound around the surface of each dielectric material, it is more preferable to provide a groove 12 at the end portion 11 of each dielectric material where the metal wire contacts, as shown in FIG. The discharge element 1 configured as described above is, for example, the fifth
As shown in the figure, the terminal 9 of the internal electrode section 4 is grounded,
Ozone can be generated by connecting the terminal 10 of the external electrode section 7 to a power source 13 to generate a discharge between the electrode sections 4 and 7, and passing air through the discharge section. Discharge occurs at the intersection of each metal wire 3 and 6. Hereinafter, the present invention will be explained in more detail with reference to specific examples. Examples 1 to 3, Comparative Examples 1 to 3 A 1 mm thick sintered body with alumina purity of 98%,
A dielectric surface measuring 5 cm in length and 5 cm in width is wound in a coil with stainless steel wire having the diameter shown in Table 1 to form an internal electrode part, and both sides of the internal electrode part are made of the same dielectric material as the internal electrode part. Ozone is generated by sandwiching the surface of each dielectric and wrapping the same stainless steel wire as the internal electrode part in a coil shape so as to cross the stainless steel wire of the internal electrode part at an angle shown in Table 1 to form an external electrode part. A discharge element for a device was obtained. Each of the obtained discharge elements was used in an ozone generator to generate ozone at a frequency of 3 KHz, and the concentration and amount of ozone generated are also shown in Table 1.

【table】

[Effect of idea]

As explained above, the discharge element for ozone generation of the present invention includes an internal electrode portion formed by winding a metal wire in a coil shape on the surface of a flat dielectric, and two flat dielectrics sandwiching the internal electrode portion. and an external electrode part formed by winding a metal wire in a coil shape on the surface of each dielectric in a direction that crosses the metal wire of the internal electrode part, and the angle at which each metal wire crosses is 80 to 90°.
Therefore, it is a discharge element that can be manufactured extremely easily and at low cost, and also has extremely good ozone generation efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing an embodiment of the discharge element for an ozone generator of the present invention, and FIG. 2 is a schematic plan view showing an internal electrode part.
Fig. 3 is a schematic plan view showing the cross state of metal wires, Fig. 4 is a perspective view of the main part showing the state in which grooves are provided in the dielectric, and Fig. 5 is the discharge element of the present invention used in an ozone generator. It is an explanatory diagram showing a state. 1...Discharge element for ozone generator, 2, 5, 5'
...Dielectric material, 3, 6...Metal wire, 4...Internal electrode part, 7
...External electrode part.

Claims (1)

[Scope of utility model registration request] An internal electrode part is made by winding a metal wire with a wire diameter of 0.1 to 0.7 mm in a coil shape around the surface of a flat dielectric material made of a sintered body of alumina purity of 96% or more, and two sheets sandwiching the internal electrode part. A flat dielectric body made of a sintered body of alumina with a purity of 96% or more is provided, and a metal wire with a wire diameter of 0.1 to 0.7 mm is wound in a coil shape on the surface of each dielectric body in a direction that crosses the metal wire of the internal electrode part. A discharge element for an ozone generator, characterized in that the metal wires cross each other at an angle of 80 to 90 degrees.