CN215581087U - Ozone generator drive circuit - Google Patents
Ozone generator drive circuit Download PDFInfo
- Publication number
- CN215581087U CN215581087U CN202122246598.0U CN202122246598U CN215581087U CN 215581087 U CN215581087 U CN 215581087U CN 202122246598 U CN202122246598 U CN 202122246598U CN 215581087 U CN215581087 U CN 215581087U
- Authority
- CN
- China
- Prior art keywords
- circuit
- ozone generator
- resistor
- transistor
- mcu
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Oxygen, Ozone, And Oxides In General (AREA)
- Inverter Devices (AREA)
Abstract
The utility model discloses an ozone generator driving circuit which comprises an MCU (microprogrammed control unit), a switch control circuit, an inverter circuit, an oscillation circuit and a booster circuit, wherein the inverter circuit is connected with an external direct-current power supply to invert direct current, the inverter circuit is connected with the booster circuit through the oscillation circuit, and the switch control circuit is connected with the MCU and the inverter circuit to control the inverter circuit to work according to a PWM (pulse width modulation) signal from the MCU. Compared with the prior art, the ozone generator driving circuit can output high-frequency high-voltage alternating current with constant frequency, namely, a PWM signal is output to the switch control circuit through the MCU, the inverter circuit is controlled to work through the switch control circuit, the ozone generator driving circuit adopts a PWM pulse width control power regulation mode to regulate and control the output power of the inverter circuit, an external direct current power supply outputs alternating current with stable and accurate frequency after being inverted by the inverter circuit, and then the high-frequency high-voltage alternating current is obtained through the oscillating circuit and the booster circuit.
Description
Technical Field
The utility model relates to the technical field of ozone generators, in particular to a driving circuit of an ozone generator.
Background
The ozone generator is a device for air purification treatment and article sterilization and disinfection by using ozone, and is widely used in various public places, production workshops, hospitals, operating rooms, large and medium-sized poultry farms and the like. The ozone generator is characterized in that an ozone sheet is promoted to convert air into ozone through a driving circuit so as to sterilize, the yield of the ozone in the ozone generator is mainly determined by discharge power, the discharge power determines the speed of the ozone in gas, and discharge tests of the gas under different power supply conditions show that under the condition of a high-frequency high-voltage alternating current power supply, the electron ionization capacity is obviously improved, the breakdown voltage is obviously reduced, the discharge is easier to self-sustain than under the direct current condition, the ozone generator is more suitable for adopting the high-frequency high-voltage alternating current power supply, but the problem that the frequency of the power supply output to an ozone generating chamber by the driving circuit of the existing ozone generator is inaccurate and unstable is solved.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an ozone generator driving circuit for outputting stable high-frequency high-voltage alternating current.
In order to solve the technical problem, the utility model provides an ozone generator driving circuit which comprises an MCU, a switch control circuit, an inverter circuit, an oscillation circuit and a booster circuit, wherein the inverter circuit is connected with an external direct-current power supply to invert direct current so as to output alternating current, the inverter circuit is connected with the booster circuit through the oscillation circuit, and the switch control circuit is connected with the MCU and the inverter circuit so as to control the inverter circuit to work according to a PWM signal from the MCU.
The further technical scheme is as follows: the ozone generator driving circuit further comprises a temperature detection circuit, wherein the temperature detection circuit comprises a thermistor, one end of the thermistor is connected with an input pin of the MCU through a resistor, and the other end of the thermistor is grounded.
The further technical scheme is as follows: the ozone generator driving circuit further comprises a current detection circuit, the current detection circuit is connected with the booster circuit to detect the working current of the driving circuit, and the MCU is connected with the current detection circuit to adjust the output PWM signal according to the working current.
The further technical scheme is as follows: the current detection circuit comprises a sixth resistor, a seventh resistor and an eighth resistor, one end of the sixth resistor is connected with one ends of the booster circuit and the seventh resistor, the other end of the seventh resistor is connected with one end of the eighth capacitor and an input pin of the MCU, and the other ends of the eighth capacitor and the sixth resistor are grounded.
The further technical scheme is as follows: the switch control circuit comprises a first transistor and a second transistor, bases of the first transistor and the second transistor are respectively connected with two output pins of the MCU through a thirteenth resistor and a fourteenth resistor, collectors of the first transistor and the second transistor are connected with the inverter circuit, and emitters of the first transistor and the second transistor are grounded.
The further technical scheme is as follows: the inverter circuit comprises a third transistor and a fourth transistor, the grid electrodes of the third transistor and the fourth transistor are respectively connected with the switch control circuit through a second resistor and a fifth resistor, the drain electrodes of the third transistor and the fourth transistor are both connected with an external direct current power supply, and the source electrodes of the third transistor and the fourth transistor are connected with the oscillation circuit.
The further technical scheme is as follows: the oscillating circuit comprises a self-coupling inductor and a second capacitor, the homonymous end of the primary winding of the self-coupling inductor and the heteronymous end of the secondary winding of the self-coupling inductor are connected with the inverter circuit, and the heteronymous end of the primary winding of the self-coupling inductor and the homonymous end of the secondary winding of the self-coupling inductor are respectively connected with two ends of the second capacitor and connected to the booster circuit.
The further technical scheme is as follows: and a third capacitor is connected between the inverter circuit and the oscillating circuit.
The further technical scheme is as follows: the booster circuit comprises a transformer, a primary winding of the transformer is connected with the oscillation circuit, and a secondary winding of the transformer is used as an output end of the ozone generator driving circuit and is connected with an ozone sheet of the ozone generator.
The further technical scheme is as follows: the ozone generator driving circuit further comprises a voltage stabilizing circuit, wherein the voltage stabilizing circuit comprises a voltage stabilizer, a fourth capacitor, a fifth capacitor and a first resistor, the model of the voltage stabilizer is LM7805, one end of the first resistor is connected with an external direct-current power supply, the other end of the first resistor is connected with one end of the fourth capacitor, one end of the fifth capacitor and a 3 rd pin of the voltage stabilizer, a 1 st pin of the voltage stabilizer is connected with the MCU through an eighth resistor, and the other end of the fourth capacitor, the other end of the fifth capacitor and a 2 nd pin of the voltage stabilizer are all grounded.
Compared with the prior art, the ozone generator driving circuit can output high-frequency high-voltage alternating current with constant frequency, namely, a PWM signal is output to the switch control circuit through the MCU, the inverter circuit is controlled to work through the switch control circuit, the ozone generator driving circuit adopts a PWM pulse width control power regulation mode to regulate and control the output power of the inverter circuit, an external direct current power supply outputs alternating current with stable and accurate frequency after being inverted by the inverter circuit, and then the high-frequency high-voltage alternating current is obtained through the oscillating circuit and the booster circuit.
Drawings
FIG. 1 is a block diagram of the circuit structure of the driving circuit of the ozone generator of the present invention.
Fig. 2 is a schematic circuit diagram of the ozone generator driving circuit of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
Referring to fig. 1-2, fig. 1-2 show an embodiment of the ozone generator driving circuit 100 of the present invention. In the embodiment shown in the drawings, the ozone generator driving circuit 100 includes an MCU 10, a switch control circuit 20, an inverter circuit 30, an oscillator circuit 40, and a voltage boost circuit 50, wherein the inverter circuit 30 is connected to an external dc power source to invert dc power to output ac power, the inverter circuit 30 is connected to the voltage boost circuit 50 through the oscillator circuit 40, and the switch control circuit 20 is connected to the MCU 10 and the inverter circuit 30 to control the operation of the inverter circuit 30 according to a PWM signal from the MCU 10. Preferably, in this embodiment, the external dc power supply is 12V dc power, and the MCU 10 has a model number SN8P2711B SOP 8. Based on the design, the utility model adopts a PWM pulse width control power regulation mode to regulate and control the output power of the inverter circuit 30, an external direct current power supply outputs alternating current with stable and accurate frequency after being inverted by the inverter circuit 30, and then high-voltage alternating current of 3.1KV to 3.5KV is obtained through the oscillating circuit 40 and the booster circuit 50, so that corona discharge of a discharge electrode of the ozone generator is triggered more effectively, and the ozone output is improved.
In some embodiments, the ozone generator driving circuit 100 further includes a temperature detecting circuit 60, the temperature detecting circuit 60 includes a thermistor RT1, one end of the thermistor RT1 is connected to an input pin (pin 5) of the MCU 10 through a resistor R11, and the other end is grounded. As shown in fig. 2, a bypass capacitor C9 is further provided in this embodiment, and a tenth resistor R10 is further connected to the resistor R11 and the thermistor RT1, and the other end of the tenth resistor R10 is grounded through a seventh capacitor C7. Based on the above design, since the resistance value of the thermistor RT1 changes with the increase of the operating temperature of the ozone generator driving circuit 100, the MCU 10 recognizes the voltage change of the 5 th pin thereof, so as to adjust the output PWM signal, in this embodiment, when the operating temperature of the driving circuit 100 is higher than 60 ℃, the MCU 10 controls the pulse width of the PWM signal output to the switch control circuit 20 according to the change of the resistance value of the thermistor RT1, so as to decrease the operating current, so that the temperature of the ozone generator driving circuit 100 does not increase rapidly.
In some embodiments, the ozone generator driving circuit 100 further includes a current detection circuit 70, the current detection circuit 70 is connected to the voltage boost circuit 50 to detect the operating current of the driving circuit 100, and the MCU 10 is connected to the current detection circuit 70 to adjust the output PWM signal according to the operating current. Specifically, the current detection circuit 70 includes a sixth resistor R6, a seventh resistor R7, and an eighth capacitor C8, one end of the sixth resistor R6 is connected to the voltage boost circuit 50 and one end of the seventh resistor R7, the other end of the seventh resistor R7 is connected to one end of the eighth capacitor C8 and an input pin (the 6 th pin) of the MCU 10, and the other ends of the eighth capacitor C8 and the sixth resistor R6 are both grounded. Based on the above design, the detection circuit composed of the sixth resistor R6, the seventh resistor R7 and the eighth capacitor C8 can detect the operating current of the voltage boosting circuit 50, and the change of the operating current is understandably the voltage difference between the sixth resistor R6 and the ground. In this embodiment, the normal operating current is 1.5-1.6A, and when the operating current is detected to be greater than 1.6-1.8A, the MCU 10 controls the pulse width of the PWM signal output to the switch control circuit 20, so that the operating current is maintained within the range of 1.5-1.6A; when the working current is detected to be larger than 2-3A, the MCU 10 stops working for 10S; and if the working current is detected to be greater than 2-3A for three times continuously, namely the MCU 10 stops working for 10S for three times continuously, the MCU 10 stops working, and detection is carried out again after power is supplied again.
Preferably, in this embodiment, the switch control circuit 20 includes a first transistor Q1 and a second transistor Q2, bases of the first transistor Q1 and the second transistor Q2 are respectively connected to two output pins (pin 2 and pin 7) of the MCU 10 through a thirteenth resistor R13 and a fourteenth resistor R14, collectors of the first transistor Q1 and the second transistor Q2 are connected to the inverter circuit 30, and are respectively connected to an external dc power source through a third resistor R3 and a fourth resistor R4, and emitters of the first transistor Q1 and the second transistor Q2 are both grounded.
With continued reference to fig. 2, in the embodiment shown in the drawing, the inverter circuit 30 includes a third transistor Q3 and a fourth transistor Q4, gates of the third transistor Q3 and the fourth transistor Q4 are connected to collectors of a second transistor Q2 and a first transistor Q1 in the switch control circuit 20 through a second resistor R2 and a fifth resistor R5, respectively, drains of the third transistor Q3 and the fourth transistor Q4 are both connected to an external dc power supply, and sources of the third transistor Q3 and the fourth transistor Q4 are connected to the oscillation circuit 40.
Specifically, the oscillating circuit 40 includes an auto-coupling inductor L1 and a second capacitor C2, the dotted terminal of the primary winding and the dotted terminal of the secondary winding of the auto-coupling inductor L1 are respectively connected to the sources of the fourth transistor Q4 and the third transistor Q3 in the inverter circuit 30, and the dotted terminal of the primary winding and the dotted terminal of the secondary winding of the auto-coupling inductor L1 are respectively connected to two ends of the second capacitor C2 and to the voltage boosting circuit 50. Further, a third capacitor C3 is connected between the inverter circuit 30 and the oscillator circuit 40. In this embodiment, the voltage boost circuit 50 includes a transformer T1, a primary winding of the transformer T1 is connected to the oscillation circuit 40, and a secondary winding thereof is used as an output terminal of the ozone generator driving circuit 100 for connecting an ozone sheet of the ozone generator.
Preferably, the ozone generator driving circuit 100 further includes a voltage stabilizing circuit, the voltage stabilizing circuit includes a voltage stabilizer U1, a fourth capacitor C4, a fifth capacitor C5 and a first resistor R1, the model of the voltage stabilizer U1 is LM7805, one end of the first resistor R1 is connected to an external dc power supply, the other end of the first resistor R is connected to one end of the fourth capacitor C4 and the fifth capacitor C5 and a 3 rd pin of the voltage stabilizer U1, a 1 st pin of the voltage stabilizer U1 is connected to a 1 st pin of the MCU 10 through an eighth resistor R8, and the other ends of the fourth capacitor C4 and the fifth capacitor C5 and a 2 nd pin of the voltage stabilizer U1 are all grounded. In this embodiment, the 1 st pin of the voltage regulator U1 is further grounded through a sixth capacitor C6, the 8 th pin of the MCU 10 is also grounded, and the 3 rd pin of the MCU 10 is connected to a seventh capacitor C7 through a ninth resistor R9.
In summary, the driving circuit of the ozone generator can output high-frequency high-voltage alternating current with constant frequency, that is, the MCU outputs PWM signals to the switch control circuit, and the switch control circuit controls the inverter circuit to operate, so that the driving circuit of the ozone generator adopts a PWM pulse width control power adjustment mode to adjust and control the output power of the inverter circuit, the external dc power supply outputs alternating current with stable and accurate frequency after being inverted by the inverter circuit, and then the oscillating circuit and the voltage boosting circuit obtain high-voltage alternating current of 3.1KV to 3.5KV, so as to trigger corona discharge of the discharge electrode of the ozone generator more effectively, improve the ozone output, and through the cooperation of the temperature detection circuit and the current detection circuit with the MCU, constant current, overload and automatic regulation of overheat can be realized.
The foregoing is considered as illustrative of the preferred embodiments of the utility model and is not to be construed as limiting the utility model in any way. Various equivalent changes and modifications can be made by those skilled in the art based on the above embodiments, and all equivalent changes and modifications within the scope of the claims should fall within the protection scope of the present invention.
Claims (10)
1. An ozone generator drive circuit characterized by: the ozone generator driving circuit comprises an MCU, a switch control circuit, an inverter circuit, an oscillation circuit and a booster circuit, wherein the inverter circuit is connected with an external direct-current power supply to invert direct current so as to output alternating current, the inverter circuit is connected with the booster circuit through the oscillation circuit, and the switch control circuit is connected with the MCU and the inverter circuit so as to control the inverter circuit to work according to a PWM signal from the MCU.
2. The ozone generator drive circuit according to claim 1, wherein: the ozone generator driving circuit further comprises a temperature detection circuit, wherein the temperature detection circuit comprises a thermistor, one end of the thermistor is connected with an input pin of the MCU through a resistor, and the other end of the thermistor is grounded.
3. The ozone generator drive circuit according to claim 1, wherein: the ozone generator driving circuit further comprises a current detection circuit, the current detection circuit is connected with the booster circuit to detect the working current of the driving circuit, and the MCU is connected with the current detection circuit to adjust the output PWM signal according to the working current.
4. The ozone generator drive circuit according to claim 3, wherein: the current detection circuit comprises a sixth resistor, a seventh resistor and an eighth resistor, one end of the sixth resistor is connected with one ends of the booster circuit and the seventh resistor, the other end of the seventh resistor is connected with one end of the eighth capacitor and an input pin of the MCU, and the other ends of the eighth capacitor and the sixth resistor are grounded.
5. The ozone generator drive circuit according to claim 1, wherein: the switch control circuit comprises a first transistor and a second transistor, bases of the first transistor and the second transistor are respectively connected with two output pins of the MCU through a thirteenth resistor and a fourteenth resistor, collectors of the first transistor and the second transistor are connected with the inverter circuit, and emitters of the first transistor and the second transistor are grounded.
6. The ozone generator drive circuit according to claim 1, wherein: the inverter circuit comprises a third transistor and a fourth transistor, the grid electrodes of the third transistor and the fourth transistor are respectively connected with the switch control circuit through a second resistor and a fifth resistor, the drain electrodes of the third transistor and the fourth transistor are both connected with an external direct current power supply, and the source electrodes of the third transistor and the fourth transistor are connected with the oscillation circuit.
7. The ozone generator drive circuit according to claim 1, wherein: the oscillating circuit comprises a self-coupling inductor and a second capacitor, the homonymous end of the primary winding of the self-coupling inductor and the heteronymous end of the secondary winding of the self-coupling inductor are connected with the inverter circuit, and the heteronymous end of the primary winding of the self-coupling inductor and the homonymous end of the secondary winding of the self-coupling inductor are respectively connected with two ends of the second capacitor and connected to the booster circuit.
8. The ozone generator drive circuit according to claim 1, wherein: and a third capacitor is connected between the inverter circuit and the oscillating circuit.
9. The ozone generator drive circuit according to claim 1, wherein: the booster circuit comprises a transformer, a primary winding of the transformer is connected with the oscillation circuit, and a secondary winding of the transformer is used as an output end of the ozone generator driving circuit and is connected with an ozone sheet of the ozone generator.
10. The ozone generator drive circuit according to claim 1, wherein: the ozone generator driving circuit further comprises a voltage stabilizing circuit, wherein the voltage stabilizing circuit comprises a voltage stabilizer, a fourth capacitor, a fifth capacitor and a first resistor, the model of the voltage stabilizer is LM7805, one end of the first resistor is connected with an external direct-current power supply, the other end of the first resistor is connected with one end of the fourth capacitor, one end of the fifth capacitor and a 3 rd pin of the voltage stabilizer, a 1 st pin of the voltage stabilizer is connected with the MCU through an eighth resistor, and the other end of the fourth capacitor, the other end of the fifth capacitor and a 2 nd pin of the voltage stabilizer are all grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122246598.0U CN215581087U (en) | 2021-09-16 | 2021-09-16 | Ozone generator drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122246598.0U CN215581087U (en) | 2021-09-16 | 2021-09-16 | Ozone generator drive circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215581087U true CN215581087U (en) | 2022-01-18 |
Family
ID=79850923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122246598.0U Active CN215581087U (en) | 2021-09-16 | 2021-09-16 | Ozone generator drive circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215581087U (en) |
-
2021
- 2021-09-16 CN CN202122246598.0U patent/CN215581087U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7426125B2 (en) | Adjustable compact high-frequency-high-voltage power supply | |
| CN106452159A (en) | High-voltage repetitive pulse generating apparatus and method for electric pulse breakage | |
| CN113037125B (en) | Resonance repetition frequency high-voltage pulse power supply for generating low-temperature plasma | |
| CN205303948U (en) | Air purifier high -voltage ion generating device | |
| CN215581087U (en) | Ozone generator drive circuit | |
| CN110672995A (en) | Power cable oscillatory wave partial discharge detection circuit and detection method thereof | |
| CN216384282U (en) | Electric generating open fire circuit and electric flame stove | |
| CN219332619U (en) | Strong pulse ultraviolet sterilization circuit and device | |
| CN116683608A (en) | Switching circuit of inverter | |
| KR950013318A (en) | Induction heating power supply for manufacturing CRT (TV CRT) using semiconductor devices (IGBT, MOSFET) | |
| CN206272523U (en) | A kind of circuit of ozonator | |
| CN205408241U (en) | Fountain rhythm control circuit of fountain light source | |
| CN215072203U (en) | Soft start circuit and motor | |
| CN204669210U (en) | A kind of pulse driving circuit of electrical arc spraying power source | |
| CN213094534U (en) | Pre-burning circuit of YAG laser generator xenon lamp | |
| CN213125885U (en) | Integrated drive circuit for alternating current power control and stepless speed regulation control circuit | |
| CN202089769U (en) | Ozone generator control circuit | |
| CN219247492U (en) | Energy storage inverter power supply | |
| KR100537721B1 (en) | Regulator for micom | |
| CN211123124U (en) | Power cable oscillatory wave partial discharge detection circuit | |
| CN101808455B (en) | Discharge lamp lighting circuit having starter circuit | |
| CN219476017U (en) | Control circuit of sealing machine | |
| CN204258638U (en) | High frequency and high voltage power supply device for industrial X-ray diagnostic machine | |
| CN215934758U (en) | Stepless speed regulation circuit of alternating current motor and electrical equipment | |
| CN216174838U (en) | Ultrasonic cleaner with adjustable vibration power |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |