JPH0421794Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a discharge element for a generator that ozonizes oxygen in the air.

(Prior Art) Conventionally, as shown in FIG. 4, for example, discharge electrodes a1 and a2 are provided on both sides of a ceramic substrate p, and a high alternating current voltage is applied to both discharge electrodes a1 and a2 to create a discharge area h. was generated and the air was made to flow along the surface of the ceramic substrate p to ozone the oxygen in the air.

(Problem to be solved by the invention) The amount of ozone generated increases in proportion to the length of the discharge electrode, but when a large amount of ozone is generated by the above ozone generation mechanism, the discharge electrodes a1 and a2 are Since it is necessary to extend the size of the ceramic substrate p, the size of the device increases, and since the upper discharge electrode a1 is exposed to the air, sputtering occurs in which constituent particulates are scattered by discharge. There was a problem in that this phenomenon occurred and the discharge function of the discharge electrode a1 deteriorated over time.

The purpose of the present invention is to apply a discharge element for an ozone generator that eliminates the above-mentioned problems.

(Means for Solving the Problems) The discharge element for an ozone generator of the present invention has a pair of parallel electrodes in which a plurality of electrode strips arranged in parallel lines are connected in phase with each other, and the electrodes are dielectric. A laminate is formed by stacking a plurality of discharge plates, each printed with the same pattern on one side of a body substrate, in close contact with each other so that each pair of parallel electrodes is sandwiched between the substrates. This laminate is provided with an air flow opening opening vertically between each row of electrode strips aligned in the stacking direction, and a pair of connection terminals connected to both parallel electrodes of each layer. It has a similar configuration.

(Function) A pair of parallel electrodes, each having a plurality of electrode bands, are printed in the same pattern on one side of a dielectric substrate, and a plurality of discharge bodies are stacked together in close contact to form each pair. The above-mentioned parallel electrodes are respectively sandwiched between the above-mentioned substrates, and while each pair of parallel electrodes is not exposed to the air, air is passed through the air flow holes opened between each row of electrode bands to remove oxygen from the air. Ozonize.

(Example) Next, an example of the present invention will be described with reference to the drawings.

In a discharge element H incorporated in an ozone generator, a plurality of discharge plates 1 constituting the discharge element H are made of a ceramic dielectric substrate 2 formed in a rectangular plate shape.
and a pair of parallel electrodes 3 fixed on this substrate 2.
They each have the following.

As the substrate 2, for example, alumina or a ceramic material containing alumina and glass as main components with addition of a thermoplastic synthetic resin is used.

Each pair of parallel electrodes 3 is formed by screen printing a conductive paste of silver, silver palladium, tungsten, etc. on the substrate 2, and each substrate 2 has a large number of electrode strips 3a to 3a arranged in parallel lines. A pair of parallel electrodes 3 are connected to one end of each electrode band 3a in the same phase through a pair of connection conductors 3b, which are connected every other wire to one end of each electrode band 3a, respectively, in the same pattern. It is printed.

The laminate 5 has a plurality of discharge plates 1 stacked closely together in such a way that each pair of parallel electrodes 3 is sandwiched between the substrates 2 so that they are not exposed to the air, and one plate is placed at the bottom end. are formed by integrally stacking the substrates 2, and in the laminate 5, there are electrode strip rows 4 to 4 in which the electrode strips 3a of each layer are aligned in a vertical row in the stacking direction of the discharge plates 1 in the horizontal direction. arranged in parallel. The laminate 5 is heated and pressurized under conditions such that the thermoplastic synthetic resin components of each substrate 2 are softened and welded to each other, for example, at a temperature of 80 to 150°C and a pressure of approximately 150 kg/cm ² , and the bonding interface of each substrate 2 is bonded. are welded together, and each pair of parallel electrodes 3 is embedded between each substrate.

The stacked body 5 has rectangular hole-shaped air flow holes 6 to 6 arranged in parallel and extending vertically between the adjacent electrode strip rows 4 in order to allow air to flow between the adjacent electrode strip rows 4. At the same time, a pair of through holes 7, 7 are formed vertically through the tips of each electrode band 3a of the electrode band rows 4 at both ends in order to respectively connect both parallel electrodes 3 of each layer. Both through holes 7, 7 are each filled with a conductor made of solidified conductive paste, and the laminated body 5 has a pair of parallel electrodes 3 of each layer connected to an external AC high voltage power source and a ground electrode. Connection terminals 8, 8 are arranged in parallel. It should be noted that each substrate 2 of the laminate 5 is subjected to a sintering process at a predetermined temperature for a predetermined period of time after each air flow port 6 and both through holes 7 are punched.
When an AC high voltage is applied to each pair of parallel electrodes 3 through both connection terminals 8, a silent discharge region M to M is created in each air flow opening 6 between each opposing layer and each row of electrode bands 3a. A part of the oxygen in the air generated and flowing through each air circulation port 6 is converted into ozone.

Next, the operation and effects of the embodiment having the above configuration will be explained.

In this example, a pair of parallel electrodes 3, in which a plurality of electrode strips 3a arranged in parallel lines are connected every other time in the same phase, are printed with the same pattern on one side of a dielectric substrate 2. Multiple discharge plates 1
, each pair of parallel electrodes 3 are sandwiched between the substrates 2 and are closely stacked together to form a laminate 5, and this laminate 5 has each electrode aligned in the stacking direction. Air flow holes 6 which are vertically opened between the strip rows 4 and a pair of connection terminals 8 respectively connected to each pair of parallel electrodes 3 are provided.

Therefore, by stacking each pair of parallel electrodes 3 in which electrode bands 3a are arranged in parallel lines, the silent discharge area M generated between each adjacent electrode band 3a is determined in each layer of the three groups of parallel electrodes. and a large number of them are formed in each row to substantially extend the effective length of the silent discharge region M within a certain space and to effectively ozone the oxygen in the air flowing through each air circulation port 6. This has the effect of reducing the size of the discharge element H and increasing the ozone generation ability to generate a large amount of ozone.

In addition, since the discharge element H has a sandwich structure in which each pair of parallel electrodes 3 is embedded between each substrate 2, the discharge performance of the discharge electrode is maintained by suppressing deterioration over time due to the sputtering phenomenon of the discharge electrode. can be done.

Note that the ozone generation ability of the discharge element H can be changed by appropriately setting the arrangement interval and the number of arrangement of each electrode band 3a, the number of laminated discharge plates 1, etc.

(Effects of the invention) Since the present invention is configured as described above, it is possible to downsize the discharge element and secure ozone generation ability, and since each pair of parallel electrodes is not exposed to the air, By eliminating contact between the air flowing through the air flow opening and the parallel electrodes, it is possible to eliminate early deterioration of the discharge performance of the discharge plate due to this contact, and it is possible to maintain the initial discharge performance of the discharge plate for a long period of time.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention; Figure 1 is a perspective view of a discharge element, Figure 2 is a vertical sectional view, and Figure 3 is an exploded perspective view of a discharge plate and a substrate. , FIG. 4 is a longitudinal sectional view of a conventional silent discharge mechanism. 1...Discharge plate, 2...Substrate, 3...Parallel electrode,
3a... Electrode band, 4... Electrode band row, 6... Air flow opening, 8... Connection terminal, H... Discharge element.

Claims (1)

[Scope of utility model registration request] A pair of parallel electrodes, each consisting of a plurality of electrode strips arranged in parallel lines and connected every other in the same phase, are formed by a plurality of discharge plates each printed with the same pattern on one side of a dielectric substrate. , each pair of parallel electrodes is sandwiched between the substrates and closely stacked together to form a laminate, and this laminate has a layer between each row of electrodes aligned in the stacking direction. 1. A discharge element for an ozone generator, characterized in that the discharge element is provided with an air flow opening opened vertically in each layer, and a pair of connection terminals respectively connected to both parallel electrodes of each layer.