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How ozone generator produces ozone

As we all know, ozone plays a very important role in preventing food, medicine, cosmetics and other health products from spoilage, which can significantly extend the shelf life of food. Ozone generator The reason why the shelf life of food can be prolonged is mainly because ozone has an efficient sterilization effect.

In addition to sterilization, ozone can also eliminate indoor and outdoor odor, decompose harmful substances, treat sewage and bleach

Although ozone has been used in production and life for a long time, many people still do not know how ozone is generated from the ozone generator, and the circuit structure of the ozone generator is not clear.

1、 The principle of ozone generation

Ozone is a kind of strong oxidant, which is obtained by high-pressure ionization (or electrolysis, chemistry, photochemical reaction). Its production process is to decompose part of oxygen in the air into oxygen atoms, and these oxygen atoms and oxygen molecules polymerize to form ozone.

The nature of ozone is extremely unstable and will decompose rapidly after production. Therefore, ozone can only be produced and used now. The equipment that produces ozone is called ozone generator. According to the different ways of ozone generation, ozone generators are mainly divided into three types: high voltage discharge ozone generator, electrolytic ozone generator and ultraviolet irradiation ozone generator.

2、 Circuit structure of ozone generator

The circuit of ozone generator is composed of triode VT1, vt2 and inductance coil l1-13, pulse transformer T, current limiting resistor R1, charging capacitor C3, bidirectional trigger diode rao5, etc. half wave rectification filter circuit is composed of filter inductance coil l0, rectifier diode VD1 and filter capacitor C1, C2. After switching on the power supply, the AC voltage of 220 V is filtered by lo and rectified by VD1, and a voltage of about 10 280 V is generated at both ends of C1 to supply the push-pull oscillation circuit. At the moment of power on, VT1 is on. Due to the charging effect of C3, the bidirectional trigger diode vd5 is cut off.

When the charging voltage at both ends of C3 rises to 32V, vd5 is triggered to make vt2 turn on. During the conduction period of vt2, C3 gradually discharges and vt2 is cut off. When VTL and vt2 are switched on, VTL and vt2 are turned on alternately to make VTL and vt2 turn on. After the operation of the push-pull oscillation circuit, a pulse high voltage is generated on the secondary winding L6 of the pulse transformer T to make the ozone generator VG work and produce ozone.

At the same time, led vd7 also works. The components are VTL and vt2 are 2sc2653 or BU406 Silicon NPN high back pressure transistor. Current amplification factor β > 100 is required. 1 n4007 rectifier diodes are selected for vdl-vd4 and vd6, and db3 bidirectional trigger diodes are selected for vd5. RJ-1 / 8W type metal film resistor is selected for R1-R6. L0 is 5mh magnetic core inductance coil, which can be wound 210 turns on the skeleton with Φ 0.25mm enameled wire; L1 coil is made of Φ 0.2mm single core plastic copper wire on the same magnetic ring, in which L1 and L2 are wound 3 turns and L3 9 turns respectively. Pulse transformer T can be reformed by using 14In (inch) black-and-white TV output transformer. High voltage package is used as L6, 168 turns of Φ 0.45mm enameled wire is used as L4 on low-voltage package framework, and 4 turns of Φ 0.23mm enameled wire is used as L5 (wound at the outermost layer). Vgz-20, vgz-10 and so on were selected.

Except for the ozone generator VG, all electronic components are installed on a self-made printed circuit board, and then put into a plastic or wooden box of appropriate size. The light-emitting diode vd7 is fixed in the opening on the box surface, and the ozone generating chip VG is connected. As long as the components are in good condition and the wiring is correct, it can work after being electrified.

 

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