CN216946218U

CN216946218U - Ozone generator operating condition detection circuitry

Info

Publication number: CN216946218U
Application number: CN202221025736.0U
Authority: CN
Inventors: 肖文平
Original assignee: Shunde Polytechnic
Current assignee: Shunde Polytechnic
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-12
Anticipated expiration: 2032-04-28

Abstract

The utility model discloses an ozone generator working state detection circuit, which comprises an ultraviolet sensor D6, an operational amplifier chip IC1, a peripheral component resistor R8, a resistor R12, a resistor R13, a capacitor C4 and a capacitor C6, wherein an ultraviolet detection circuit is formed by the ultraviolet sensor, the resistor R12, the resistor R13, the capacitor C4 and the capacitor C6, ultraviolet rays generated by an ozone sheet of a high-voltage discharge type ozone generator and ultraviolet rays of an ultraviolet irradiation type ozone generator are irradiated onto a diode D6, the circuit responds, a generated high level is compared with a set voltage obtained by dividing voltage by the resistors R2 and R3 at one end of a comparator IC2A through the diode D1, and the generated high level is output by a diode D4 to indicate that the ozone generator is working normally. The utility model is mainly used for monitoring high-voltage discharge type and ultraviolet irradiation type ozone generators, monitors the ozone generator circuit by using the unit circuit, feeds back whether the generator works normally or not in real time, ensures the display at the first time of fault generation, and triggers the protection circuit to carry out corresponding treatment.

Description

Ozone generator operating condition detection circuitry

Technical Field

The utility model relates to a detection circuit for the working state of an ozone generator.

Background

An ozone generator is an electrical device used to produce ozone gas (molecular formula: O3). Ozone, due to its chemical nature, is easily decomposed and cannot be stored, generally by means of on-site preparation (storage for a short time only in very specific cases), and therefore ozone generators are widely used for extracting ozone gas for drinking water, sewage, industrial oxidation, food processing and preservation, pharmaceutical synthesis, space sterilization and other fields, such as: the sterilization can quickly kill various bacteria and viruses without secondary pollution; the residual pesticide in the food can be effectively removed in the aspect of detoxification; in the aspect of deodorization, various odors such as musty odor, smoke odor, oil smoke odor, water stain, garbage and the like can be removed; the oxygen content of air and water can be improved in the aspect of oxygenation; in the aspect of health care, the air is purified, and the metabolism of a human body is promoted; the fresh-keeping aspect can be used for keeping fruits, vegetables and eggs fresh.

The ozone generator is mainly divided into three types according to the mode of ozone generation: the first is a high-voltage discharge type, the second is an ultraviolet irradiation type, and the third is an electrolysis type. The working principle is that partial oxygen in the air is decomposed and polymerized into ozone by means of high-pressure ionization, photochemical or chemical reaction, and the conversion process is an allotropic conversion process of oxygen. The chemical formula is as follows:

3O2＝＝＝＝2O3

the high-voltage discharge type ozone generator is used for producing a high-voltage corona electric field by using high-voltage current with a certain frequency, so that oxygen molecules in or around the electric field generate electrochemical reaction, thereby producing ozone. The mode is generally driven by a medium-high frequency power supply, has the advantages of large ozone yield (a single machine can reach 1Kg/h), stable work, long service life and the like, and has the most mature technology and the most extensive use.

The ultraviolet ozone generator generates ozone by irradiating oxygen molecules with ultraviolet rays having a specific wavelength (185mm) to decompose the oxygen molecules. The generator has a narrow application range due to the large size of the ultraviolet lamp, the low ozone output and the short service life.

The electrolytic generator adopts a novel PEM membrane to electrolyze deionized water by using positive and negative poles of a low-voltage direct current conducted solid-state membrane electrode, water is separated into oxyhydrogen molecules in a proton exchange mode on a special anode solution interface, hydrogen is directly discharged from a cathode solution interface, and the oxygen molecules obtain energy on the anode interface due to the excitation of electrons generated by high-density current and are polymerized into ozone molecules. This approach is costly and is currently used less often.

Ozone excitation terminals of high-voltage discharge type ozone generators are easily damaged. The common types of the ceramic tube, the quartz tube, the ceramic plate, the ceramic tube, the glass tube, the enamel tube and the like have the defects of poor mechanical strength and easy damage caused by temperature stress or electric breakdown according to the division of dielectric materials. The drive transistor and transformer coil of the ozone generator are also operated at high temperature and high pressure and are easy to damage. After the ozone generator is damaged due to faults, if the ozone generator is not timely treated, the using function is slightly influenced, and serious consequences such as fire disasters and the like are generated due to continuous high-temperature discharge and the like. Therefore, the detection of the working state of the generator is of great significance.

In addition, the ozone generator works in an environment needing sterilization, the generated high-concentration ozone is harmful to a human body, and the high-voltage discharge type generator produces NOX gas which has carcinogenic effect on the human body, so that workers are difficult to stay on the site to monitor the working condition of the generator in real time, and a detection circuit is inevitably used for generating a high-reliability real-time monitoring signal.

Currently, the known ozone generator circuit is a self-excited oscillation booster circuit, as shown in fig. 1, which induces an ac voltage from a winding W5, and drives a light emitting diode VL to illuminate after being rectified by VD6 to indicate an operating state.

The disadvantage of this circuit is that the transformer of the circuit is particularly complex in construction and, in addition, the stability of the circuit is poor and VL is easily burnt out by interference from the high voltage circuit.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an ozone generator working state detection circuit which is used for monitoring high-voltage discharge type and ultraviolet irradiation type ozone generators, a unit circuit is used for monitoring an ozone generator circuit, whether the generator works normally or not is fed back in real time, the first time display of fault generation is ensured, and a protection circuit is triggered to carry out corresponding treatment, so that the defects in the prior art are overcome.

In order to solve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of ozone generator working condition detection circuit, by ultraviolet sensor D6, operational amplifier chip IC1 and peripheral component resistance R8, resistance R12, resistance R13, capacitance C4, capacitance C6 make up the ultraviolet detection circuit jointly, the ultraviolet ray that the ozone slice of the high-pressure discharge type ozone generator is excited produces and ultraviolet ray of the ultraviolet ray radiation type ozone generator shines on diode D6, the circuit responds, the high level produced is compared with the set voltage of the end of the comparator IC2A by resistance R2, R3 partial pressure through diode D1, produce the high level and export by diode D4, instruct the ozone generator to work normally;

a high-frequency signal detection circuit is formed by an inductor L1, a field-effect tube Q1, a resistor R5, a capacitor C3, a resistor R10 and a resistor R15, a high-frequency signal generated when the high-voltage discharge type ozone generator works normally is induced to the L1, a current is generated to drive the field-effect tube Q1 to be conducted, voltage is compared with a set voltage of a negative end of a comparator IC2B, the set voltage is divided by the resistor R11 and the resistor R16 through a diode D5, high level is generated, the high level is output by a diode D3, and the ozone generator is indicated to work normally.

The utility model has the beneficial effects that:

1. the utility model relates to a high-reliability ozone generator working state detection circuit which is used for being matched with an ozone generator and monitoring the working state of an exciter. After the direct current power supply is provided, high level or low level is output according to the working state of the ozone exciter.

2. The utility model is mainly used for monitoring high-voltage discharge type and ultraviolet irradiation type ozone generators, monitors the ozone generator circuit by using the unit circuit, feeds back whether the generator works normally or not in real time, ensures the display at the first time of fault generation, and triggers the protection circuit to carry out corresponding treatment.

Drawings

FIG. 1 is a prior art self-oscillating boost circuit for an ozone generator;

FIG. 2 is a circuit diagram of an embodiment of the present invention;

FIG. 3 is a circuit diagram of a second embodiment of the present invention;

FIG. 4 is a circuit diagram of a third embodiment of the present invention.

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.

The principles and practical applications of the present invention are well explained, so that those skilled in the art can well understand and utilize the present invention. The utility model is limited only by the claims and their full scope and equivalents.

Example one

Referring to fig. 2, the present invention provides a circuit for detecting the operating status of an ozone generator, which comprises an ultraviolet sensor D6, an operational amplifier chip IC1, a resistor R8 as a peripheral component, a resistor R12, a resistor R13, a capacitor C4, and a capacitor C6, wherein ultraviolet rays generated by the ozone generator of a high-voltage discharge type and ultraviolet rays of the ultraviolet irradiation type ozone generator irradiate on a diode D6, and the circuit responds, and the generated high level is compared with a set voltage divided by resistors R2 and R3 at the end of a comparator IC2A through a diode D1, and the generated high level is output by a diode D4 to indicate that the ozone generator is working normally;

Example two

Referring to fig. 3, the difference between the present embodiment and the first embodiment is that Q1 is a P-channel MOS transistor. A high-frequency signal detection circuit is formed by inductors L1, Q1, R5, C3, R10 and R15, a high-frequency signal generated when the high-voltage discharge type ozone generator works normally is induced to the L1 to generate current to drive the Q1 to be conducted, voltage is compared with a set voltage of a negative end of a comparator IC2B through the D5, the set voltage is divided by the R11 and the R16, high level is generated, and the high level is output by the D3 to indicate that the ozone generator works normally. The rest of the circuit is the same as the first embodiment.

EXAMPLE III

Referring to fig. 4, the difference between the present embodiment and the first embodiment is that an N-channel fet is used as Q1. A high-frequency signal detection circuit is formed by inductors L1, Q1, R5, C3, R10 and R15, a high-frequency signal generated when the high-voltage discharge type ozone generator works normally is induced to the L1 to generate current to drive the Q1 to be conducted, voltage is compared with a set voltage of a negative end of a comparator IC2B through the D5, the set voltage is divided by the R11 and the R16, high level is generated, and the high level is output by the D3 to indicate that the ozone generator works normally. The rest of the circuit is the same as the first embodiment.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. An ozone generator operating condition detection circuit which is characterized in that: an ultraviolet ray detection circuit is formed by an ultraviolet ray sensor D6, an operational amplifier chip IC1, a resistor R8, a resistor R12, a resistor R13, a capacitor C4 and a capacitor C6, ultraviolet rays generated by the ozone sheet of the high-voltage discharge type ozone generator and ultraviolet rays of the ultraviolet ray irradiation type ozone generator are irradiated on a diode D6, the circuit responds, the generated high level is compared with a set voltage of the comparator IC2A, wherein the set voltage is divided by the resistors R2 and R3 through the diode D1, the generated high level is output by a diode D4, and the ozone generator is indicated to work normally;