JPH0121082B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an ozone generator, which applies voltage to a resistor and discharges it to ozone oxygen in the air. Since a pure alumina substrate must be used and sandwiched with a stainless steel plate or the like, it is extremely expensive (see Figure 3).

The present invention was developed for the purpose of providing an efficient, low-cost ozone generator using a low-purity alumina substrate.

The structure of the present invention will be explained with reference to one embodiment according to the above-mentioned purpose.Ozone generation is made by sandwiching a resistor 1 made of an alloy of iron, chromium, tungsten, molybdenum, or other nickel between alumina substrates 2 and 2'. A plurality of plates A are stacked on top of each other using ceramic pipe spacers 3, etc., with appropriate gaps in the appropriate places, and are fastened with ceramic bolts 4, and a voltage is applied to discharge the plates so that ozone is released from oxygen in the air. This is an ozone generator that uses a high-purity alumina substrate, and its functions and effects are explained in detail according to the drawings. Conventionally, it required a large amount of cost to further polish a high-purity alumina substrate to a flat surface with no distortion. However, in the present invention, the alumina substrates 2, 2' with a low purity of about 90% to 93% are formed into a flat surface, and then the iron 5
%, 10% chromium, 4% tungsten, 10% molybdenum, and other materials such as nickel.The ozone generating plate A is integrated with an alloy resistor 1 made of 10% chromium, 4% tungsten, 10% molybdenum, and other materials such as nickel. By maintaining appropriate spacing and insulating them, and then stacking the appropriate number of bolts and tightening them with ceramic bolts 4, etc., the distortion was corrected without polishing, and the voltage was applied and discharged by passing current alternately between + and -. , which releases ozone from oxygen in the air, and can be used without polishing low-purity alumina substrates, making it 1/20th the price of conventional products, and insulating multiple ozone generating plates A. Invention of an extremely low-cost and highly efficient ozone generator that can emit ozone with an efficiency of over 10% by stacking them and tightening them at the appropriate places to correct distortion while discharging. It is. By the way, when comparing the present invention and the prior art using the device shown in Fig. 4, <Overview of the device> Generated ozone measuring instrument EG manufactured by Ebara Jitsugyo Co., Ltd.
Uses 2001A.

7... Oxygen cylinder 8... Pressure reducer 9... Shirotsuku fan 10... Air volume adjustment plate 11... Ammeter 12... Transformer 13... Voltmeter 14... Generator body 15... Anemometer 16... Ultraviolet rays Sensor The ozone generating plates A are stacked in two layers, one above the other.
The alumina substrates 2 and 2' are 0.8mm thick and 100mm in length and width.
x100mm width. The resistor 1 made of an alloy (iron, chromium, tungsten, molybdenum, nickel) serving as an electrode has a thickness of 0.2 mm and a width of 100 mm x 100 mm.

The discharge gap is 3.0mm.

The conditions such as the thickness, length and width of the high-purity alumina substrate and stainless steel plate of the conventional ozone generating plate are the same as those of the constituent materials of the ozone generating plate A, and the discharge gap is also the same, 3.0 mm.

<Measurement method> After the reduced pressure oxygen obtained from the oxygen cylinder 7 through the pressure reducing valve is further put into the pressure reducing device 8,
The air volume adjustment plate 10 (flow rate 4.15/min (1
per second) into the generator body 14. On the other hand, inside the generator main body 14, the reaction temperature was set to 20°C and the pressure was 760mmHg.
A discharge current is applied to the electrodes of the ozone generator, which is made up of internally installed ozone generator plates A and A stacked in upper and lower layers.
A voltage set to 1.45 mA and a discharge voltage of 15.0 KV is applied, and ozone generated by the ultraviolet sensor 16 is measured.

<Measurement results> The amount of ozone produced by the ozone generator according to the prior art is 4.20 mol/h (per hour) x ¹⁰³ , and the amount of ozone produced by the ozone generator according to the present invention is 4.20 mol/h (per hour). per hour) x ¹⁰³ .

In addition, the reaction temperature was -31℃, 0℃, 25℃, 41℃,
Measurements were performed at 59°C, but the amount of ozone produced was the same in both cases.

As described above, it is considered that there is no difference in the ozone generation efficiency between the two methods.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention. Fig. 1 is a sectional view of an ozone generating plate according to the invention, Fig. 2 is a sectional view of an ozone generator in which the same generating plates are stacked together, and Fig. 3 is a sectional view of an ozone generator according to the prior art. A sectional view of the ozone generating plate and FIG. 4 are schematic diagrams of the configuration of the ozone measuring device. 1...Resistor, 2, 2'...Alumina substrate, 3
... Ceramic pipe spacer, 4 ... Ceramic bolt, A ... Ozone generation plate, B ... Ozone generation plate of conventional technology, 5, 5' ... High purity alumina substrate, 6 ... Stainless steel plate.

Claims (1)

[Claims] 1 Iron, chrome, tungsten, molybdenum,
In addition, a plurality of ozone generating plates A each having an alloy resistor 1 made of nickel held between alumina substrates 2 and 2' are assembled using ceramic pipe spacers 3, etc.
This ozone generator is constructed by stacking ceramic bolts 4 on top of each other with appropriate gaps, and applying voltage to discharge ozone to emit ozone from oxygen in the air.