A control circuit for an ozone module

Abstract

This invention discloses a control circuit for an ozone module, including a power input module, an FG electronically regulated signal terminal, a capacitor E1, a transistor Q1, a field-effect transistor U1, and a common-mode inductor L1. One end of capacitor E1 is electrically connected to one end of the electronically regulated power supply terminal, and the other end of capacitor E1 is electrically connected to one end of the FG electronically regulated signal terminal. The emitter of transistor Q1 is electrically connected to the end of capacitor E1 connected to the electronically regulated power supply terminal. The gate of field-effect transistor U1 is electrically connected to the collector of transistor Q1. Common-mode inductor L1 has pins 1, 2, 3, and 4, and pin 1 of common-mode inductor L1 is electrically connected to the source of field-effect transistor U1. This invention designs a control circuit for an ozone module, which solves the problem of ozone generation even when the purifier is not placed in water, by using a high-stability anti-interference function module and a control ozone load switch; it reduces resource waste and ensures safe use.

Description

Technical Field

[0001] This invention relates to the field of control circuits, and in particular to a control circuit for an ozone module. Background Technology

[0002] With the increasing diversification of consumer appliances, the market demand for fruit and vegetable washing machines is constantly growing. People's focus on health and food safety has made this device an essential appliance in daily life. Fruit and vegetable washing machines not only remove dirt from the surface of fruits and vegetables but also effectively kill residual pesticides and bacteria, ensuring the safety of food.

[0003] Ozone modules play a crucial role in fruit and vegetable washing machines, with their control circuits responsible for generating and releasing ozone to achieve cleaning and disinfection effects. However, traditional knob-type vegetable washers suffer from the drawback of ozone diffusion in the air, leading to reduced ozone efficiency and potential health risks for users. Typically, these machines use a timer to control the power supply of the ozone module; once the knob timer is activated, the ozone module continues to operate, generating ozone even when not submerged in water, resulting in resource waste and compromising safety. Therefore, this solution proposes a control circuit for an ozone module to address these issues. Summary of the Invention

[0004] The purpose of this invention is to provide a control circuit for an ozone module to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a control circuit for an ozone module, comprising: A power input module is used for power input to the circuit, and the power input module includes a power terminal and an ESC power supply terminal. The FG electronic speed controller signal terminal is used to receive the FG square wave signal fed back after the electronic speed controller is running. Capacitor E1, one end of which is electrically connected to one end of the ESC power supply terminal, and the other end of which is electrically connected to one end of the FG ESC signal terminal; Transistor Q1, wherein the emitter of transistor Q1 is electrically connected to one end of capacitor E1 connected to the power supply terminal of the electronic speed controller; Field-effect transistor U1, wherein the gate of field-effect transistor U1 is electrically connected to the collector of transistor Q1; A common-mode inductor L1 is provided with pins 1, 2, 3 and 4. Pin 1 of the common-mode inductor L1 is electrically connected to the source of the field-effect transistor U1, and pins 2, 3 and 4 of the common-mode inductor L1 are electrically connected to a load.

[0006] Preferably, a diode D1 is electrically connected between the FG electronically controlled signal terminal and the capacitor E1, a resistor R5 is electrically connected between the cathode of the diode D1 and the capacitor E1, and a resistor R4 is electrically connected between the resistor R5 and one end of the capacitor E1 connected to the electronically controlled power supply terminal.

[0007] Preferably, one end of the capacitor E1 connected to the resistor R5 is electrically connected to the base of the transistor Q1 via a resistor R3.

[0008] Preferably, a resistor R1 is electrically connected to one end of the power supply terminal, one end of the power supply terminal, and the drain of the field-effect transistor U1, and the end of the resistor R1 away from the power supply terminal is electrically connected to the collector of the transistor Q1.

[0009] Preferably, the end of resistor R1 away from the power supply terminal is electrically connected to resistor R2, the end of resistor R2 connected to resistor R1 is electrically connected to the collector of transistor Q1, and the end of resistor R2 away from resistor R1 is electrically connected to the gate of field-effect transistor U1.

[0010] Preferably, the source of the field-effect transistor U1 is electrically connected to a capacitor E2, and the end of the capacitor E2 away from the field-effect transistor U1 is electrically connected to the other end of the power supply terminal, the other end of the power supply terminal, the emitter of the transistor Q1, the capacitor E1, the resistor R4, the pin 2 of the common-mode inductor L1, and the load.

[0011] Preferably, the load includes an LED, an ozone generator, an ozone pump, and a fan. The power supply terminals of the LED, ozone pump, and fan are electrically connected to both ends of the capacitor E2, and one end of the LED is electrically connected to pin 1 of the common-mode inductor L1.

[0012] Preferably, pins 3 and 4 of the common-mode inductor L1 are electrically connected to the two ends of the ozone generator, respectively.

[0013] The technical effects and advantages of this invention are as follows: This invention designs a control circuit for an ozone module. A highly stable anti-interference functional module is formed by capacitor E1, capacitor E2, transistor Q1, diode D1, common-mode inductor L1, and resistor. At the same time, an ozone load switch is set up to control the ozone load. This solves the problem that the rotary vegetable washer will produce ozone for a long time even when the purifier is not placed in water during the timer's working time. This reduces resource waste and ensures safe use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the control circuit of the present invention.

[0015] Figure 2 This is a flowchart illustrating the control circuit of the present invention within a fruit and vegetable washing machine.

[0016] In the diagram: 1. Power supply terminal; 2. ESC power supply terminal; 3. FG ESC signal terminal; 4. Diode D1; 5. Resistor R5; 6. Resistor R4; 7. Capacitor E1; 8. Resistor R3; 9. Transistor Q1; 10. Resistor R1; 11. Resistor R2; 12. Field-effect transistor U1; 13. Capacitor E2; 14. Common-mode inductor L1; 15. LED; 16. Ozone generator; 17. Ozone pump; 18. Fan. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1: The present invention provides as follows Figure 1 The control circuit of an ozone module shown includes a power input module, an FG electronically regulated signal terminal 3, a capacitor E17, a transistor Q19, a field-effect transistor U112, and a common-mode inductor L114. The power input module is used for the power input of the circuit and includes a power terminal 1 and an electronically regulated power supply terminal 2. FG ESC signal terminal 3 is used to receive the FG square wave signal fed back after the ESC is running. The ESC in the scheme is a motor control board. One end of capacitor E17 is electrically connected to one end of ESC power supply terminal 2, and the other end of capacitor E17 is electrically connected to one end of FG ESC signal terminal 3. A diode D14 is electrically connected between FG ESC signal terminal 3 and capacitor E17. A resistor R55 is electrically connected between the cathode of diode D14 and capacitor E17. A resistor R46 is electrically connected between resistor R55 and the end of capacitor E17 connected to ESC power supply terminal 2. The emitter of transistor Q19 is electrically connected to one end of capacitor E17 connected to power supply terminal 2. One end of capacitor E17 connected to resistor R55 is electrically connected to the base of transistor Q19 via resistor R38. The end of resistor R110 away from power supply terminal 1 is electrically connected to the collector of transistor Q19. The gate of the field-effect transistor U112 is electrically connected to the collector of the transistor Q19. One end of the power supply terminal 1, one end of the power supply terminal 2, and the drain of the field-effect transistor U112 are electrically connected to a resistor R110. The end of the resistor R110 away from the power supply terminal 1 is electrically connected to a resistor R211. One end of the resistor R211 connected to the resistor R110 is electrically connected to the collector of the transistor Q19. The end of the resistor R211 away from the resistor R110 is electrically connected to the gate of the field-effect transistor U112. It should be noted that one end of resistor R110 is connected to power supply terminal 1, one end of power supply terminal 2 of ESC and the drain of MOSFET U112, and the other end of resistor R110 is connected to one end of resistor R211 and the collector of transistor Q1.

[0019] The common mode inductor L114 has pins 1, 2, 3 and 4. Pin 1 of the common mode inductor L114 is electrically connected to the source of the field-effect transistor U112, and pins 2, 3 and 4 of the common mode inductor L114 are electrically connected to the load. The source of the field-effect transistor U112 is electrically connected to a capacitor E213. The end of the capacitor E213 away from the field-effect transistor U112 is electrically connected to the other end of power supply terminal 1, the other end of the power supply terminal 2, the emitter of transistor Q19, capacitor E17, resistor R46, pin 2 of common-mode inductor L114, and the load.

[0020] It should be noted that the gate of the field-effect transistor U112 is connected to the other end of the resistor R211, the source of the field-effect transistor U112 is connected to one end of the capacitor E213 and pin 1 of the common-mode inductor L114, and one end of the power-on port of the LED15.

[0021] The load includes LED15, ozone generator 16, ozone pump 17, and fan 18. The power supply terminals of LED15, ozone pump 17, and fan 18 are electrically connected to the two ends of capacitor E213. One end of LED15 is electrically connected to pin 1 of common mode inductor L114. Pins 3 and 4 of common mode inductor L114 are electrically connected to the two ends of ozone generator 16, respectively.

[0022] It should be noted that the emitter of transistor Q19 is connected to power supply terminal 1, power supply terminal 2 of ESC, the other end of capacitor E213, pin 2 of common mode inductor L114, capacitor E17, resistor R46, the power supply terminal of LED15, the power supply terminal of ozone pump 17, and one end of the power supply terminal of fan 18; pin 3 of common mode inductor L114 is connected to one end of the power supply terminal of ozone generator 16, and pin 4 of common mode inductor L114 is connected to the other end of the power supply terminal of ozone generator 16.

[0023] Example 2: The present invention provides as follows Figure 2The control process inside the fruit and vegetable washing machine shown adopts the control circuit of an ozone module in Embodiment 1. The specific implementation process is as follows: After receiving power, power terminal 1 supplies power to ESC power supply terminal 2. After ESC power supply terminal 2 is powered on, the ESC (motor control board) runs and feeds back an FG square wave signal, which is received by FG ​​ESC signal terminal 3. After receiving the FG square wave signal, the signal passes through diode D14, and resistors R46 and R55 form a voltage divider circuit to charge capacitor E17. Resistor R38 is a current limiting resistor. When E17 is charged to the saturation voltage of transistor Q19, the initial cutoff state formed by resistors R110, R211, and MOSFET U112 changes, and MOSFET U112 turns on, supplying power to the terminals of LED 15, ozone pump 17, and fan 18. The ozone generator 16 is powered through common mode inductor L114.

[0024] When the purifier of the cleaning machine is not working or has not been placed in water for a period of time, the FG signal fed back from the power supply terminal 2 of the ESC becomes a low level signal, the base of transistor Q19 becomes a low level, and transistor Q19 becomes a cut-off state; the gate of MOSFET U112 becomes a high level, and MOSFET U112 becomes a cut-off state, stopping the supply of power to the terminals of ozone generator 16, LED 15, ozone pump 17 and fan 18.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A control circuit for an ozone module, characterized in that, include: A power input module is used for power input to the circuit. The power input module includes a power terminal (1) and an ESC power supply terminal (2). FG ESC signal terminal (3), the FG ESC signal terminal (3) is used to receive the FG square wave signal fed back after the ESC is running; Capacitor E1 (7), one end of which is electrically connected to one end of the power supply terminal (2) of the electronic speed controller, and the other end of which is electrically connected to one end of the signal terminal (3) of the FG electronic speed controller. Transistor Q1 (9), the emitter of transistor Q1 (9) is electrically connected to one end of capacitor E1 (7) connected to the power supply terminal (2); Field-effect transistor U1 (12), the gate of which is electrically connected to the collector of transistor Q1 (9); A common-mode inductor L1 (14) is provided with pin 1, pin 2, pin 3 and pin 4. Pin 1 of the common-mode inductor L1 (14) is electrically connected to the source of the field-effect transistor U1 (12). Pins 2, 3 and 4 of the common-mode inductor L1 (14) are electrically connected to a load.

2. The control circuit for an ozone module according to claim 1, characterized in that, A diode D1 (4) is electrically connected between the FG electronically controlled signal terminal (3) and the capacitor E1 (7). A resistor R5 (5) is electrically connected between the cathode of the diode D1 (4) and the capacitor E1 (7). A resistor R4 (6) is electrically connected between the resistor R5 (5) and one end of the capacitor E1 (7) connected to the electronically controlled power supply terminal (2).

3. The control circuit for an ozone module according to claim 2, characterized in that, The capacitor E1 (7) is electrically connected to one end of the resistor R5 (5) and the base of the transistor Q1 (9) by a resistor R3 (8).

4. The control circuit for an ozone module according to claim 1, characterized in that, One end of the power supply terminal (1), one end of the power supply terminal (2) and the drain of the field-effect transistor U1 (12) are electrically connected to a resistor R1 (10), and the end of the resistor R1 (10) away from the power supply terminal (1) is electrically connected to the collector of the transistor Q1 (9).

5. The control circuit for an ozone module according to claim 4, characterized in that, The end of resistor R1 (10) away from power terminal (1) is electrically connected to resistor R2 (11). The end of resistor R2 (11) connected to resistor R1 (10) is electrically connected to the collector of transistor Q1 (9). The end of resistor R2 (11) away from resistor R1 (10) is electrically connected to the gate of field-effect transistor U1 (12).

6. The control circuit for an ozone module according to claim 2, characterized in that, The source of the field-effect transistor U1 (12) is electrically connected to a capacitor E2 (13). The end of the capacitor E2 (13) away from the field-effect transistor U1 (12) is electrically connected to the other end of the power supply terminal (1), the other end of the power supply terminal (2), the emitter of the transistor Q1 (9), the capacitor E1 (7), the resistor R4 (6), the pin 2 of the common-mode inductor L1 (14), and the load.

7. The control circuit for an ozone module according to claim 6, characterized in that, The load includes an LED (15), an ozone generator (16), an ozone pump (17), and a fan (18). The power supply terminals of the LED (15), the ozone pump (17), and the fan (18) are electrically connected to the two ends of the capacitor E2 (13). One end of the LED (15) is electrically connected to pin 1 of the common-mode inductor L1 (14).

8. The control circuit for an ozone module according to claim 7, characterized in that, Pins 3 and 4 of the common-mode inductor L1 (14) are electrically connected to the two ends of the ozone generator (16), respectively.

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