An ultraviolet lamp driving circuit

Abstract

The utility model belongs to the technical field of power supply circuit, the utility model provides a kind of ultraviolet lamp drive circuit, including 220V power input, voltage stabilizing module, switch module, ultraviolet lamp drive module, 300V power input and 12V DC power input module;The 220V power input is connected with voltage stabilizing module, voltage stabilizing module is connected with switch module, switch module is connected with ultraviolet lamp drive module, 12V DC power input module and 300V power input respectively, and ultraviolet lamp drive module is connected with 12V DC power input module.Connecting to form an effective and stable high-intensity output of ultraviolet lamp, and reaching better sterilization effect.

Description

Technical Field

[0001] This utility model belongs to the field of power supply circuit technology, specifically relating to an ultraviolet lamp driving circuit. Background Technology

[0002] Ultraviolet (UV) disinfection lamps are devices that use ultraviolet radiation to disinfect and sterilize air, water, and surfaces. UV disinfection lamps are mainly divided into UVC (UVC band), UVB (UVB band), and UVA (UVA band). The UVC band has the strongest bactericidal effect, effectively destroying the DNA and RNA of microorganisms such as bacteria, viruses, and fungi, thereby achieving disinfection and sterilization. As a highly efficient and environmentally friendly disinfection and sterilization device, UV disinfection lamps have continuously growing market demand, wide application areas, and significant development potential. Gas discharge lamps have high starting voltages and low discharge sustaining voltages. When the lamp is started with high voltage, the voltage drops and the current increases. If not controlled, the lamp current will continue to increase until the lamp burns out. Therefore, designing a dedicated UV lamp drive circuit is essential. Utility Model Content

[0003] The purpose of this invention is to provide a UV lamp driving circuit to achieve effective and stable high-intensity output of the UV lamp.

[0004] This utility model provides an ultraviolet lamp driving circuit, comprising a 220V power input terminal, a voltage regulator module, a switching module, an ultraviolet lamp driving module, a 300V power input terminal, and a 12V DC power input module; the 220V power input terminal is connected to the voltage regulator module, the voltage regulator module is connected to the switching module, the switching module is connected to the ultraviolet lamp driving module, the 12V DC power input module, and the 300V power input terminal respectively, and the ultraviolet lamp driving module is connected to the 12V DC power input module.

[0005] In some embodiments, the voltage regulator module includes a 2P terminal block, a fuse FUSE, a thermistor N1, a transformer T1, a resistor R1, a capacitor C1, a diode D1, a diode D2, a diode D3, a diode D4, and a capacitor C5;

[0006] The 220V power input terminal is connected to input terminal one and input terminal two of 2P terminal one. Output terminal one of 2P terminal one is connected to one end of fuse FUSE. The other end of fuse FUSE is connected to port one of transformer T1. Port two of transformer T1 is connected to output terminal two of 2P terminal one through thermistor N1. Port three of transformer T1 is connected to one end of resistor R1, one end of capacitor C1, the negative terminal of diode D1, and the positive terminal of diode D2. Port four of transformer T1 is connected to the other end of resistor R1, the other end of capacitor C1, the negative terminal of diode D3, and the positive terminal of diode D4. The positive terminals of diode D1 and D3 are connected to the output potential GND_A, and the negative terminals of diode D2 and D4 are connected to the output potential GND_B.

[0007] In some embodiments, the switching module includes capacitors C2, C3, C4, C6, C7, C8, C9, C10, a switching power supply chip, transformer T2, diode D5, resistors R2, R3, R4, R5, R6, optocoupler OC1, and inductor L2.

[0008] The 300V power input terminal is connected to one end of capacitor C2, one end of capacitor C4, one end of resistor R2, one end of resistor R3, and port 1 of transformer T2. The other end of capacitor C4 is connected to the other end of resistor R2, the other end of resistor R3, and the negative terminal of diode D5. The positive terminal of diode D5 is connected to port 2 of transformer T2 and pins 5, 6, 7, and 8 of the switching power supply chip. Port 3 of transformer T2 is connected to the positive terminal of diode D6 and one end of resistor R4. The other end of resistor R4 is connected to one end of capacitor C7. The other end of capacitor C7 is connected to the negative terminal of diode D6, one end of capacitor C8, one end of resistor R6, and one end of inductor L2. The other end of inductor L2 is connected to the 12V DC power input terminal. The input module connects the other end of capacitor C8 and port 4 of transformer T2 to potential GND_B. The other end of resistor R6 is connected to port 1 of optocoupler OC1. Port 2 of optocoupler OC1 is connected to the UV lamp driver module. Port 3 of optocoupler OC1 is connected to pin 4 of the switching power supply chip and one end of capacitor C3. The other end of capacitor C3, the other end of capacitor C2, one end of resistor R5, pin 1 and pin 2 of the switching power supply chip, one end of capacitor C9, and one end of capacitor C10 are connected to potential GND_A. The other end of resistor R5 is connected to one end of capacitor C6. The other end of capacitor C6 is connected to pin 3 of the switching power supply chip and port 4 of optocoupler OC1. The other end of capacitor C9 is connected to the UV lamp driver module. The other end of capacitor C10 is grounded.

[0009] In some embodiments, the UV lamp driving module includes capacitors C11, C12, C13, C14, C15, R7, R8, R9, R10, amplifier A1, transistor Q1, and UV lamp F1.

[0010] One end of capacitor 13C13, one end of resistor 9R9, and one end of resistor 10R10 are connected to the 12V DC power input module. The other end of capacitor 13C13 is connected to the potential GND_B. The other end of resistor 9R9 is connected to one end of capacitor 12C12, one end of resistor 8R8, one end of capacitor 14C14, and the positive input terminal of amplifier A1. The negative input terminal of amplifier A1 is connected to one end of capacitor 15C15. The other end of capacitor 15C15 is connected to one end of capacitor 11C11 and the emitter of transistor Q1. The other end of capacitor 11C11 is grounded. The output terminal of amplifier A1 is connected to the base of transistor Q1. The collector of transistor Q1 is connected to one end of resistor 7R7, the other end of capacitor 12C12, and port 2 of optocoupler 1OC1. The other end of resistor 7R7 is connected to the other end of capacitor 14C14. The other end of resistor 8R8 is connected to one end of ultraviolet lamp F1 and the other end of capacitor 9C9. The other end of ultraviolet lamp F1 is connected to the other end of resistor 10R10.

[0011] In some embodiments, the 12V DC power input module includes a 2P terminal block, a 12V DC power input terminal, and a resistor R11.

[0012] The input port 1 of 2P terminal block 2 is connected to the 12V DC power input terminal, and the input port 2 of 2P terminal block 2 is grounded. The output port 1 of 2P terminal block 2 outputs 12V DC power and is connected to the other end of inductor 2 L2, one end of capacitor 13 C13, one end of resistor 9 R9, one end of resistor 10 R10, and one end of resistor 11 R11. The other end of resistor 11 R11 and the output port 2 of 2P terminal block 2 are connected to the potential GND_B.

[0013] In some embodiments, the switching power supply chip is a DK124 switching power supply chip.

[0014] The beneficial effects of this utility model are as follows: The ultraviolet lamp driving circuit provided by this utility model uses a voltage regulator module to convert the AC power output from the power module into unidirectional pulsating DC power. It uses a DK124 switching power supply chip to efficiently convert the input voltage into a stable output voltage. At the same time, it uses an optocoupler to isolate the output DC power supply from the input AC220V current power supply, thereby providing a stable high starting voltage for the ultraviolet lamp and limiting the lamp current to keep it stable within the specified range. This allows the ultraviolet lamp to effectively and stably output high intensity, achieving a better sterilization effect. Attached Figure Description

[0015] Figure 1 A block diagram of the ultraviolet lamp driving circuit in this embodiment of the present invention.

[0016] Figure 21. Structure diagram of the ultraviolet lamp driving circuit in the embodiment of this utility model. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0018] Example

[0019] This example provides a UV lamp driving circuit, such as... Figure 1 As shown, it includes a 220V power input terminal, a voltage regulator module, a switching module, an ultraviolet lamp driver module, a 300V power input terminal, and a 12V DC power input module; the 220V power input terminal is connected to the voltage regulator module, the voltage regulator module is connected to the switching module, the switching module is connected to the ultraviolet lamp driver module, the 12V DC power input module, and the 300V power input terminal respectively, and the ultraviolet lamp driver module is connected to the 12V DC power input module.

[0020] The specific circuit structure is as follows: Figure 2 As shown, the voltage regulator module includes a 2P terminal block, a fuse (FUSE), a thermistor (N1), a transformer (T1), a resistor (R1), a capacitor (C1), a diode (D1), a diode (D2), a diode (D3), a diode (D4), and a capacitor (C5).

[0021] The 220V power input terminal is connected to input terminal one and input terminal two of 2P terminal one. Output terminal one of 2P terminal one is connected to one end of fuse FUSE. The other end of fuse FUSE is connected to port one of transformer T1. Port two of transformer T1 is connected to output terminal two of 2P terminal one through thermistor N1. Port three of transformer T1 is connected to one end of resistor R1, one end of capacitor C1, the negative terminal of diode D1, and the positive terminal of diode D2. Port four of transformer T1 is connected to the other end of resistor R1, the other end of capacitor C1, the negative terminal of diode D3, and the positive terminal of diode D4. The positive terminals of diode D1 and D3 are connected to the output potential GND_A, and the negative terminals of diode D2 and D4 are connected to the output potential GND_B.

[0022] Specifically, the switching module includes capacitors C2, C3, C4, C6, C7, C8, C9, C10, a switching power supply chip, transformer T2, diode D5, resistors R2, R3, R4, R5, R6, optocoupler OC1, and inductor L2.

[0023] The 300V power input terminal is connected to one end of capacitor C2, one end of capacitor C4, one end of resistor R2, one end of resistor R3, and port 1 of transformer T2. The other end of capacitor C4 is connected to the other end of resistor R2, the other end of resistor R3, and the negative terminal of diode D5. The positive terminal of diode D5 is connected to port 2 of transformer T2 and pins 5, 6, 7, and 8 of the switching power supply chip. The NC port of transformer T2 is a normally closed contact. When this port is not triggered, the circuit is in a conductive state, and the transformer is connected to the circuit for operation. Port 3 of transformer T2 is connected to the positive terminal of diode D6 and one end of resistor R4. The other end of resistor R4 is connected to one end of capacitor C7. The other end of capacitor C7 is connected to the negative terminal of diode D6, one end of capacitor C8, one end of resistor R6, and one end of inductor L2. The other end of inductor L2 is connected to the 12V DC power input module. The other end of capacitor C8 and port 4 of transformer T2 are connected to potential GND_B. The other end of resistor R6 is connected to port 1 of optocoupler OC1. Port 2 of optocoupler OC1 is connected to the UV lamp driver module. Port 3 of optocoupler OC1 is connected to pin 4 of the switching power supply chip and one end of capacitor C3. The other end of capacitor C3, the other end of capacitor C2, one end of resistor R5, pins 1 and 2 of the switching power supply chip, one end of capacitor C9, and one end of capacitor C10 are connected to potential GND_A. The other end of resistor R5 is connected to one end of capacitor C6. The other end of capacitor C6 is connected to pin 3 of the switching power supply chip and port 4 of optocoupler OC1. The other end of capacitor C9 is connected to the UV lamp driver module, and the other end of capacitor C10 is grounded. The switching power supply chip is a DK124, which efficiently converts the input voltage into a stable output voltage. Optocoupler OC1 is an EL1018 or PC817 optocoupler, which isolates the output DC power supply from the input AC220V current power supply to ensure stable circuit output.

[0024] Specifically, the UV lamp driver module includes capacitors eleven (C11), twelve (C12), thirteen (C13), fourteen (C14), fifteen (C15), resistors seven (R7), eight (R8), nine (R9), ten (R10), amplifier A1, transistor Q1, and UV lamp F1; UV lamp F1 can be an ozone-containing or ozone-free lamp.

[0025] One end of capacitor 13C13, one end of resistor 9R9, and one end of resistor 10R10 are connected to the 12V DC power input module. The other end of capacitor 13C13 is connected to the potential GND_B. The other end of resistor 9R9 is connected to one end of capacitor 12C12, one end of resistor 8R8, one end of capacitor 14C14, and the positive input terminal of amplifier A1. The negative input terminal of amplifier A1 is connected to one end of capacitor 15C15. The other end of capacitor 15C15 is connected to one end of capacitor 11C11 and the emitter of transistor Q1. The other end of capacitor 11C11 is grounded. The output terminal of amplifier A1 is connected to the base of transistor Q1. The collector of transistor Q1 is connected to one end of resistor 7R7, the other end of capacitor 12C12, and port 2 of optocoupler 1OC1. The other end of resistor 7R7 is connected to the other end of capacitor 14C14. The other end of resistor 8R8 is connected to one end of ultraviolet lamp F1 and the other end of capacitor 9C9. The other end of ultraviolet lamp F1 is connected to the other end of resistor 10R10.

[0026] Specifically, the 12V DC power input module includes a 2P terminal block, a 12V DC power input terminal, and a resistor R11. Input port one of the 2P terminal block is connected to the 12V DC power input terminal, and input port two of the 2P terminal block is grounded. Output port one of the 2P terminal block outputs 12V DC power and is connected to the other end of inductor L2, one end of capacitor C13, one end of resistor R9, one end of resistor R10, and one end of resistor R11. The other end of resistor R11 and output port two of the 2P terminal block are connected to the potential GND_B.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. An ultraviolet lamp driving circuit, characterized in that, It includes a 220V power input terminal, a voltage regulator module, a switching module, an ultraviolet lamp driver module, a 300V power input terminal, and a 12V DC power input module; the 220V power input terminal is connected to the voltage regulator module, the voltage regulator module is connected to the switching module, the switching module is connected to the ultraviolet lamp driver module, the 12V DC power input module, and the 300V power input terminal respectively, and the ultraviolet lamp driver module is connected to the 12V DC power input module.

2. The ultraviolet lamp driving circuit according to claim 1, characterized in that, The voltage regulator module includes a 2P terminal block, a fuse, a thermistor (N1), a transformer (T1), a resistor (R1), a capacitor (C1), a diode (D1), a diode (D2), a diode (D3), a diode (D4), and a capacitor (C5). The 220V power input terminal is connected to input terminal one and input terminal two of 2P terminal one. Output terminal one of 2P terminal one is connected to one end of a fuse. The other end of the fuse is connected to port one of transformer (T1). Port two of transformer (T1) is connected to output terminal two of 2P terminal one through a thermistor (N1). Port three of transformer (T1) is connected to one end of resistor one (R1), one end of capacitor one (C1), the negative terminal of diode one (D1), and the positive terminal of diode two (D2), respectively. Port four of transformer (T1) is connected to the other end of resistor one (R1), the other end of capacitor one (C1), the negative terminal of diode three (D3), and the positive terminal of diode four (D4), respectively. The positive terminals of diode one (D1) and diode three (D3) are connected to the output potential GND_A, and the negative terminals of diode two (D2) and diode four (D4) are connected to the output potential GND_B.

3. The ultraviolet lamp driving circuit according to claim 2, characterized in that, The switching module includes capacitor 2 (C2), capacitor 3 (C3), capacitor 4 (C4), capacitor 6 (C6), capacitor 7 (C7), capacitor 8 (C8), capacitor 9 (C9), capacitor 10 (C10), switching power supply chip, transformer 2 (T2), diode 5 (D5), resistor 2 (R2), resistor 3 (R3), resistor 4 (R4), resistor 5 (R5), resistor 6 (R6), optocoupler 1 (OC1), and inductor 2 (L2); The 300V power input terminal is connected to one end of capacitor 2 (C2), one end of capacitor 4 (C4), one end of resistor 2 (R2), one end of resistor 3 (R3), and port 1 of transformer 2 (T2). The other end of capacitor 4 (C4) is connected to the other end of resistor 2 (R2), the other end of resistor 3 (R3), and the negative terminal of diode 5 (D5). The positive terminal of diode 5 (D5) is connected to port 2 of transformer 2 (T2) and the lead of the switching power supply chip. Pins 5, 6, 7, and 8 are connected. Terminal 3 of transformer 2 (T2) is connected to the anode of diode 6 (D6) and one end of resistor 4 (R4). The other end of resistor 4 (R4) is connected to one end of capacitor 7 (C7). The other end of capacitor 7 (C7) is connected to the cathode of diode 6 (D6), one end of capacitor 8 (C8), one end of resistor 6 (R6), and one end of inductor 2 (L2). The other end of inductor 2 (L2) is connected to a 12V DC power supply. The current power input module has the other end of capacitor 8 (C8) and port 4 of transformer 2 (T2) connected to potential GND_B. The other end of resistor 6 (R6) is connected to port 1 of optocoupler 1 (OC1). Port 2 of optocoupler 1 (OC1) is connected to the UV lamp driver module. Port 3 of optocoupler 1 (OC1) is connected to pin 4 of the switching power supply chip and one end of capacitor 3 (C3). The other end of capacitor 3 (C3), the other end of capacitor 2 (C2), one end of resistor 5 (R5), pin 1 of the switching power supply chip, pin 2 of the switching power supply chip, one end of capacitor 9 (C9), and one end of capacitor 10 (C10) are connected to potential GND_A. The other end of resistor 5 (R5) is connected to one end of capacitor 6 (C6). The other end of capacitor 6 (C6) is connected to pin 3 of the switching power supply chip and port 4 of optocoupler 1 (OC1). The other end of capacitor 9 (C9) is connected to the UV lamp driver module. The other end of capacitor 10 (C10) is grounded.

4. The ultraviolet lamp driving circuit according to claim 3, characterized in that, The ultraviolet lamp driving module includes capacitor eleven (C11), capacitor twelve (C12), capacitor thirteen (C13), capacitor fourteen (C14), capacitor fifteen (C15), resistor seven (R7), resistor eight (R8), resistor nine (R9), resistor ten (R10), amplifier (A1), transistor (Q1), and ultraviolet lamp (F1). One end of capacitor thirteen (C13), one end of resistor nine (R9), and one end of resistor ten (R10) are connected to the 12V DC power input module. The other end of capacitor thirteen (C13) is connected to the potential GND_B. The other end of resistor nine (R9) is connected to one end of capacitor twelve (C12), one end of resistor eight (R8), one end of capacitor fourteen (C14), and the positive input terminal of amplifier (A1). The negative input terminal of amplifier (A1) is connected to one end of capacitor fifteen (C15). The other end of capacitor fifteen (C15) is connected to one end of capacitor eleven (C11) and the emitter of transistor (Q1). The other end of capacitor eleven (C11) is connected to... The amplifier (A1) output terminal is connected to the base of transistor (Q1). The collector of transistor (Q1) is connected to one end of resistor 7 (R7), the other end of capacitor 12 (C12), and port 2 of optocoupler 1 (OC1). The other end of resistor 7 (R7) is connected to the other end of capacitor 14 (C14). The other end of resistor 8 (R8) is connected to one end of ultraviolet lamp (F1) and the other end of capacitor 9 (C9). The other end of ultraviolet lamp (F1) is connected to the other end of resistor 10 (R10).

5. The ultraviolet lamp driving circuit according to claim 4, characterized in that, The 12V DC power input module includes a 2P terminal block, a 12V DC power input terminal, and a resistor eleven (R11). The input port of 2P terminal block 2 is connected to the 12V DC power input terminal, and the input port of 2P terminal block 2 is grounded. The output port of 2P terminal block 2 outputs 12V DC power and is connected to the other end of inductor 2 (L2), one end of capacitor 13 (C13), one end of resistor 9 (R9), one end of resistor 10 (R10), and one end of resistor 11 (R11). The other end of resistor 11 (R11) and the output port of 2P terminal block 2 are connected to the potential GND_B.

6. The ultraviolet lamp driving circuit according to claim 5, characterized in that, The switching power supply chip is a DK124 switching power supply chip.

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