CN216584202U

CN216584202U - Small-size high concentration ozone generator

Info

Publication number: CN216584202U
Application number: CN202123131205.8U
Authority: CN
Inventors: 史殿龙; 刘凯; 张辰; 薛超凯; 何春雷
Original assignee: Qingdao Junray Intelligent Instrument Co Ltd
Current assignee: Qingdao Junray Intelligent Instrument Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2022-05-24
Anticipated expiration: 2031-12-14

Abstract

The utility model particularly relates to a small high-concentration ozone generator which comprises an inner electrode, an outer electrode, an electrode fixing piece, a first blocking pipe and a second blocking pipe, wherein the outer electrode is arranged on the outer side of the first blocking pipe, the inner electrode is arranged on the inner side of the second blocking pipe, a fluid channel is arranged between the first blocking pipe and the second blocking pipe, one end of the fluid channel is an air inlet, the other end of the fluid channel is an air outlet, and air flows through the fluid channel to generate corona reaction to generate ozone. The ozone generator directly using the metal electrodes is further optimized, the blocking pipes are additionally arranged between the metal electrodes, air is ionized into ozone in an annular gap formed by the two blocking pipes, metal particles volatilized by the electrodes are blocked outside the blocking pipes, and the purity of the ozone is guaranteed.

Description

Small-size high concentration ozone generator

Technical Field

The utility model relates to the technical field of ozone generation devices, in particular to a small high-concentration ozone generator.

Background

In industry, oxygen in air (the content of air is 21%) is mainly used as a raw material, and is exposed to a strong electric field, and oxygen molecules are opened under the action of the strong electric field and recombined to generate ozone. Specific methods for generating ozone include electrochemical methods, photochemical methods, radiochemical methods, and Dielectric Barrier Discharge (DBD), among which dielectric barrier discharge is the most common in industrial applications. Ozone instability makes it difficult to store and transport, and only available on site, so research on ozone technology has focused on ozone generators.

Dielectric Barrier Discharge (DBD) is the most widely used method at present, and its principle is that oxygen flows through the gap between two electrodes to which a high voltage electric field is applied, so that the high voltage electric field will make the oxygen generate corona reaction, oxygen molecules are ionized into two oxygen atoms through the reaction, and the ionized oxygen atoms are combined with other oxygen molecules to generate ozone. The dielectric barrier discharge method has the advantages of high power efficiency, low energy loss, high ozone yield and uncomplicated process flow, and the raw materials are air or oxygen which is easy to collect, so that people are willing to use the method to prepare ozone, and particularly the dielectric barrier discharge method is applied to an ozone generator in industrial production.

In the ozone generator based on the dielectric barrier discharge method, the structure of the discharge unit electrode not only determines the form of the discharge reaction, but also has an influence on the ozone production efficiency and purity of the ozone generator. Generally, stainless steel, copper or aluminum which is not easily oxidized or corroded is used as an electrode material of the ozone generator. However, when the above materials are directly used for discharge, the above materials generate extremely small metal particles due to ionization after the electric field breaks down the electrode gap, thereby contaminating the generated ozone, resulting in a decrease in ozone purity, and after a long-time energization, the discharge intensity of the electrode itself is decreased, the electric field force is weakened, resulting in a decrease in ozone generation rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small high-concentration ozone generator, which solves the problems that ozone generated by the existing ozone generator is polluted and the purity is reduced.

The utility model provides a small-sized high-concentration ozone generator which comprises an inner electrode, an outer electrode, an electrode fixing piece, a first blocking pipe and a second blocking pipe, wherein the outer electrode is arranged on the outer side of the first blocking pipe, the inner electrode is arranged on the inner side of the second blocking pipe, a fluid channel is arranged between the first blocking pipe and the second blocking pipe, one end of the fluid channel is an air inlet, the other end of the fluid channel is an air outlet, and air flows through the fluid channel to generate corona reaction to generate ozone.

Preferably, the electrode fixing member includes two flanges and two fastening screws, and both ends of the inner electrode are inserted into one of the flanges and fixed by the fastening screws, respectively.

Preferably, the first blocking pipe and the second blocking pipe are arranged between the two flanges, step holes are formed in opposite surfaces of the two flanges, and the first blocking pipe and the second blocking pipe are matched with the step holes.

Preferably, one flange is connected with an air inlet pipe connector, the other flange is connected with an air outlet pipe connector, an air inlet of the fluid channel is communicated with the air inlet pipe connector, and an air outlet of the fluid channel is communicated with the air outlet pipe connector.

Preferably, the air inlet pipe connector is connected with the air inlet pipe through an air inlet pipe fixed joint, and the air outlet pipe connector is connected with the air outlet pipe through an air outlet pipe fixed joint.

Preferably, the first blocking pipe and the second blocking pipe are made of one of high-temperature-resistant quartz glass and ceramic.

Compared with the prior art, the utility model has the beneficial effects that:

1. the ozone generator directly using the metal electrodes is further optimized, the blocking tubes are additionally arranged between the metal electrodes, air is ionized into ozone in an annular gap formed by the two blocking tubes, metal particles volatilized by the electrodes are blocked outside the blocking tubes, and the purity of the ozone is ensured.

2. The added blocking tube can prevent the electric field from being broken down, and the frequency of ionization of the electrode is reduced as much as possible, so that the service life of the generator is prolonged.

3. The inner electrode is connected with adjustable high voltage, the outer electrode is grounded and keeps the middle potential, and the electric field intensity between the electrodes is changed by adjusting the input voltage, so that the ozone generation concentration is controlled.

Drawings

FIG. 1 is a cross-sectional view of a small high-concentration ozone generator of the present invention;

fig. 2 is a schematic diagram of a small high concentration ozone generator of the present invention.

The figure is marked with: the gas discharge tube comprises an inner electrode 1, an outer electrode 2, a first blocking tube 3, a second blocking tube 4, a fluid channel 5, a gas inlet 6, a gas outlet 7, a first flange 8, a second flange 9, a first set screw 10, a second set screw 11, a gas inlet tube connector 12, a gas outlet tube connector 13, a gas inlet tube fixed joint 14, a gas inlet tube 15, a gas outlet tube fixed joint 16 and a gas outlet tube 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

Referring to fig. 1 and 2, the small-sized high-concentration ozone generator provided by the present embodiment includes an inner electrode 1, an outer electrode 2, an electrode fixing member, a first blocking tube 3, and a second blocking tube 4, the outer electrode 2 is disposed on the outer side of the first blocking tube 3, the inner electrode 1 is disposed on the inner side of the second blocking tube 4, the first blocking tube 3 and the second blocking tube 4 are coaxially mounted and maintain a 1mm non-contact annular gap as a fluid channel 5, one end of the fluid channel 5 is an air inlet 6, and the other end of the fluid channel is an air outlet 7. In the embodiment, the outer electrode 2 can be a copper foil, a silver foil or a stainless steel thin-wall tube with a thickness of 0.1mm to 0.5mm, the inner electrode 1 is a brass rod with a diameter of 4mm, and the first blocking tube 3 and the second blocking tube 4 are made of high-temperature-resistant quartz glass or ceramic.

The ozone generator of the embodiment is based on the dielectric barrier discharge principle, when air enters the fluid channel 5 from the air inlet 6, the fluid channel 5 is surrounded by the inner electrode and the outer electrode, the inner electrode 1 is connected with adjustable high voltage electricity, the outer electrode 2 is grounded and keeps a middle potential, a stable high-voltage electrostatic field is formed between the inner electrode and the outer electrode at the moment, and the electric field intensity between the electrodes is changed by adjusting the input voltage, so that the ozone generation concentration is controlled. After the gas is broken down and micro-discharge is generated, a large amount of electric charges are accumulated in the inside of the fluid passage 5 formed by the first and

second barrier tubes

3 and 4 and an electric field opposite to the external electric field is established. Along with the continuous accumulation of the electric charges, the space electric field in the fluid channel 5 is gradually reduced to zero, and the discharging is finished. The blocking tube limits the continuous increase of the discharge current and prevents the generation of an arc between the electrodes. Because the micro-discharge is mutually independent, after the power is placed at a certain position, a plurality of micro-discharges are generated at other different positions. The air is ionized into ozone by micro discharge with extremely high frequency in the electric field and is discharged out of the ozone generator through the air outlet 7. Because of the arc extinguishing function of the blocking tube, the electrodes only have a simple electrostatic field between the two electrodes, thereby protecting the metal electrodes and reducing the frequency of ionizing and volatilizing electrode materials.

As a preferred embodiment of this embodiment, the electrode fixing member includes a first flange 8, a second flange 9, a first fastening screw 10, and a second fastening screw 11, and both ends of the inner electrode 1 are inserted into the first flange 8 and the second flange 9, respectively, and are fixed by the first fastening screw 10 and the second fastening screw 11, respectively. The outer electrode 2 is provided with glue on one side and is uniformly adhered to the outer wall of the first blocking pipe 3.

First block pipe 3 and second and block pipe 4 and set up between two flanges, the opposite face of first flange 8 and second flange 9 is provided with the step hole, first block pipe 3 and second block pipe 4 and step hole cooperation, first block pipe 3 and second block pipe 4 is supported by first flange 8, second flange 9, first tight set screw 10, the tight set screw 11 locking of second can block pipe 3, second and fix.

As a preferred embodiment of this embodiment, the first flange 8 is connected to an air inlet pipe connector 12, the second flange 9 is connected to an air outlet pipe connector 13, the air inlet 6 of the fluid passage 5 is communicated with the air inlet pipe connector 12, and the air outlet 7 of the fluid passage 5 is communicated with the air outlet pipe connector 13. The air inlet pipe connector 12 is connected with an air inlet pipe 15 through an air inlet pipe fixing connector 14, and the air outlet pipe connector 13 is connected with an air outlet pipe 17 through an air outlet pipe fixing connector 16. Air enters the fluid passage 5 from the air inlet pipe 15 through the air inlet pipe connector 12, enters the air outlet pipe 17 through the air outlet pipe connector 13 after the fluid passage 5 generates ozone through corona reaction, and is discharged out of the ozone generator. Because ozone has strong oxidizing property, in order to avoid ozone oxidation corrosion pipeline, the material of the inlet pipe connector 12, the outlet pipe connector 13, the inlet pipe fixed joint 14, the inlet pipe 15, the outlet pipe fixed joint 16 and the outlet pipe 17 is preferably made of anti-oxidation polytetrafluoroethylene.

In the ozone generator of the embodiment, the ozone generating medium is dry clean air, and ozone exceeding 10000PPm can be generated without using oxygen as the generating medium. The generated high-concentration ozone can meet the ozone concentration requirement required by most industries.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small-size high concentration ozone generator, includes inner electrode, outer electrode and electrode mounting, its characterized in that: still include first barrier tube and second barrier tube, the outside of first barrier tube sets up the outer electrode, the inboard that the second barrier tube sets up the inner electrode, first barrier tube and second block to be fluid passage between the pipe, fluid passage one end is the air inlet, the other end is the gas outlet, and the air flows through from fluid passage and takes place corona reaction and produce ozone.

2. The compact, high concentration ozone generator of claim 1, wherein: the electrode fixing piece comprises two flanges and two fastening screws, and two ends of the inner electrode are inserted into one flange respectively and fixed by the fastening screws.

3. The compact, high concentration ozone generator of claim 2, wherein: the first blocking pipe and the second blocking pipe are arranged between the two flanges, step holes are formed in opposite surfaces of the two flanges, and the first blocking pipe and the second blocking pipe are matched with the step holes.

4. The miniature high concentration ozone generator of claim 3, wherein: and one flange is connected with an air inlet pipe connector, the other flange is connected with an air outlet pipe connector, an air inlet of the fluid channel is communicated with the air inlet pipe connector, and an air outlet of the fluid channel is communicated with the air outlet pipe connector.

5. The compact, high concentration ozone generator of claim 4, wherein: the air inlet pipe joint is connected with the air inlet pipe through an air inlet pipe fixed joint, and the air outlet pipe joint is connected with the air outlet pipe through an air outlet pipe fixed joint.

6. The compact, high concentration ozone generator of claim 1, wherein: the first blocking pipe and the second blocking pipe are made of one of high-temperature-resistant quartz glass and ceramic.