CN213637455U - High-voltage power supply of household range hood purifying device - Google Patents

Abstract

A high-voltage power supply of a household range hood purification device comprises a low-voltage power supply module, a starting circuit module, a filtering rectification module, an LLC resonance module, an overcurrent/discharge detection module, a PWM generation module, a control protection module and a high-voltage pack module. The input end of the filtering and rectifying module is connected with the output end of the starting circuit module, the output end of the filtering and rectifying module is connected with the LLC resonance module, the 220V alternating current power supply is connected with the input ends of the starting circuit module and the low-voltage power supply module, the low-voltage power supply module outputs power as the power supply of the PWM wave generation module, the overcurrent/discharge detection module and the control protection module, the output signal of the PWM wave generation module controls the MOSFET of the LLC resonance module, and the output signal of the control protection module controls the starting circuit module and the PWM wave generation. The utility model discloses a high voltage power supply module adopts the mode that analog circuit and digital circuit combine, has improved system reliability and stability.

Description

High-voltage power supply of household range hood purifying device

Technical Field

The utility model relates to a domestic lampblack absorber purifier high voltage power supply belongs to the power electronics field.

Background

In order to purify air in a kitchen and improve a working environment of a cooker, a range hood is widely used in the kitchen. However, cooking oil fumes in kitchens contain a large amount of harmful gases and solid and liquid small particles, and if the cooking oil fumes are not absorbed and purified, the cooking oil fumes are directly discharged outdoors, so that air pollution is caused, atmospheric haze is caused, and public health is affected. The oil fume filtering mode of the widely applied household range hood is generally a filter screen type, and the filter screen air holes are designed to be large, so that the oil fume filtering effect is poor. The electrostatic purifier for fume exhauster with excellent performance has high voltage power supply to supply power to the polar plate of the purifier and can absorb harmful gas and small solid and liquid particles from fume effectively. However, the high-voltage power supply adopted in the current market generally cannot regulate the voltage, and the oil stains accumulated on the polar plate are easily caused by long-term use of the range hood, so that the problems of discharging and igniting of the polar plate are easily caused, and the safety and the reliability of the electrostatic purification device of the range hood are difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: there is output voltage to current lampblack absorber purifier high voltage power supply and can not adjust, discharge and strike sparks scheduling problem between the polar plate, the utility model provides a lampblack absorber purifier high voltage power supply, this high voltage power supply adopt the mode that digital circuit and analog circuit combine, can effectively solve discharge and strike sparks problem between the polar plate to output voltage can be adjusted as required.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a high-voltage power supply of a household range hood purification device comprises a low-voltage power supply module, a starting circuit module, a filtering rectification module, an LLC resonance module, an overcurrent/discharge detection module, a PWM (pulse width modulation) generation module, a control protection module and a high-voltage pack module; the input end of the filtering and rectifying module is connected with the output end of the starting circuit module, the output end of the filtering and rectifying module is connected with the LLC resonance module, the output end of the LLC resonance module is connected with the high-voltage pack, the 220V alternating-current power supply is connected with the input ends of the starting circuit module and the low-voltage power supply module, the output power supply of the low-voltage power supply module is used as the power supply of the PWM wave generation module, the overcurrent/discharge detection module and the control protection module, the output signal of the PWM wave generation module controls the MOSFET of the LLC resonance module, the output signal of the control protection module controls the starting circuit module and the PWM wave generation module, the input end of the.

Preferably, the low-voltage power supply module comprises a transformer T1, diodes D1, D3-D6, D8-D10, capacitors C1-C6, C10-C15, a voltage regulator IC1, an IC2, an IC3 and a common-mode inductor T2; pin 3 of the common-mode inductor T2 and the second end of the capacitor C6 are connected to 220VL, pin 6 of the common-mode inductor T2 and the first end of the capacitor C6 are connected to 220VN, pin 1 of the transformer T1 is connected to pin 4 of the common-mode inductor T2 and the second end of the capacitor C5, pin 2 is connected to pin 1 of the common-mode inductor T2 and the first end of the capacitor C5, the anode of the diode D1 is connected to pin 10 of the transformer T1 and the cathode of the diode D4, the cathode of the diode D1 is connected to the cathode of the diode D3 and to the second ends of the capacitors C3 and C4 and pin 1 of the regulator IC 4, the cathode of the diode D4 is connected to pin 9 of the transformer T4 and the anode of the diode D4, the first ends of the capacitors C4-C4 and pin 2 of the regulator IC 4 are grounded, and the pin 3 of the regulator IC 4 is connected to the second end V +12 of the capacitor C4; the anode of the diode D6 is connected with the 8 pin of the transformer T1 and the cathode of the diode D9, the cathode of the diode D6 is connected with the cathode of the diode D8 and connected with the second ends of the capacitors C14 and C15 and the pin 1 of the stabilivolt IC3, the anode of the diode D8 is connected with the cathode of the diode D10 and the pin 7 of the transformer T1, the anodes of the diodes D9 and D10, the second ends of the capacitors C10-C15, the pin 2 of the stabilivolt IC2 and the pin 2 of the IC3 are grounded, the pin 3 of the stabilivolt IC3 is connected with the second ends of the capacitors C12 and C13 and the pin 1 of the stabilivolt IC2, and the pin 3 of the stabilivolt IC2 is connected with the second ends of the capacitors C10 and C11 and outputs 5.

Preferably, the starting circuit module comprises relays KK1 and KK2, a thermistor RT1, diodes D2 and D7, triodes Q1 and Q2, and resistors R1 and R4-R6; pin 2 and pin 5 of relay KK1 are connected with 220VL, pin 6 is connected with 12V power supply and cathode of diode D2, pin 1 is connected with anode of diode D2 and pin 3 of transistor Q1, pin 3 and pin 4 are connected with pin 2 and pin 5 of relay KK2 and second end of thermistor RT1, pin 4 and pin 3 of relay KK2 are connected with 220VL _ IN and first end of thermistor RT1, pin 6 is connected with 12V power supply and cathode of diode D7, pin 1 is connected with anode of diode D7 and pin 3 of transistor Q2, pin 1 of transistor Q1 is connected with resistor R1, the second end of the resistor R4, the first end of the resistor R1 are connected with the signal K1, the pin 1 of the triode Q2 is connected with the second ends of the resistors R5 and R6, the first end of the resistor R5 is connected with the signal K2, and the first ends of the resistors R4 and R6, the pin 2 of the triode Q1 and the pin 2 of the triode Q2 are all grounded.

Preferably, the smoothing and rectifying module comprises a rectifying bridge DB1, a transient suppression diode D17, capacitors C17-C23, resistors R15 and R21; pin 2 of the rectifier bridge DB1 is connected to 220VN _ IN, pin 4 is connected to 220VL _ IN, pin 1 is connected to the second terminal of the transient suppression diode D17, the second terminal of the resistor R15 and the second terminals of the capacitors C17-C21 to output the voltage + VIN, pin 3, the first terminal of the resistor R21 and the first terminals of the capacitors C19-C23 are connected to VIN, and the second terminal of the resistor R21, the first terminal of the resistor R15, the second terminals of the capacitors C22, C23 and the first terminals of the capacitors C17, C18 are connected to VIN.

Preferably, the LLC resonant module includes transformer T3, MOS transistors Q7, Q10, transistor Q6, Q8, Q9, Q11, inductor L1, connector J1, capacitors C28-C32, resistors R30-R36, zener diodes D25, D27, D31, D32, and diodes D23, D24, D26, D28-D30; the first ends of the capacitors C28 and C29 are connected with VIN _1, the second ends of the capacitors are connected with the first end of the inductor L1, and the second end of the inductor L1 is connected with the 2 pins of the connector J1; pin 8 of transformer T3 is connected to cathode of diode D26, anode of diode D23, pin 7 is connected to cathode of diode D29, pin 2 of diodes D28, pin Q9 and pin Q11, pin 6 is connected to first terminal of resistor R34, pin 1 is connected to cathode of diode D34 and second terminal of resistor R34, pin 2 is connected to anode of zener diode D34, pin S of MOS Q34, pin D of NOS tube Q34, first terminal of capacitor C34 and second terminal of capacitor C34, pin 3 is connected to cathode of diode D34 and second terminal of resistor R34, pin 4 is connected to anode of zener diode D34, first terminal of resistor R34, pin S of MOS Q34 and pin VIN, pin 5, first terminal of capacitor C34, first terminal of diode D34, anode of diode D34, transistor Q34, pin 3 of Q34, pin D34 and cathode of diode D34, transistor Q34 are all grounded, pin 34 and pin 34 is connected to ground, Pins 3 of the Q9 are connected to 12V, pins 1 of the transistors Q6 and Q8 are connected to a first end of a resistor R31, a second end of the resistor R31 is connected to a signal Gate, pins 1 of the transistors Q9 and Q11 are connected to a first end of a resistor R33, a second end of the resistor R33 is connected to a signal Gate _ GND, a second end of the resistor R34 is connected to a second end of a capacitor C32 and a signal F1, an anode of the diode D24, a first end of a resistor R32, and an anode of the zener diode D25 are connected to a pin G of the MOS transistor Q7, a cathode of the zener diode D7 is connected to a cathode of the zener diode D7, an anode of the MOS transistor Q7, a first end of the resistor R7, and an anode of the zener diode D7 are connected to a pin G of the MOS transistor Q7, a cathode of the zener diode D7 is connected to a cathode of the zener diode D7, a pin D of the MOS Q7, a second end of the resistor R7 and a second end of the resistor VIN 7 are connected to, the second end of the resistor R36 is connected to the first end of the capacitor C31.

Preferably, the over-current/discharge detection module comprises resistors R11, R13, R16, R18, R19, R23, R24, R28, diodes D11, D12, D15, D16, D18-D20, D22, zener diodes D13 and D21, capacitors C16, C25 and C27, a current sensor LL1, a connector J2 and a potentiometer RP 2; the anode of the diode D11 is connected with the cathode of the diode D12 and the 2 pin of the connector J2, the 3 pin of the potentiometer RP2 is connected with the 1 pin of the connector J2, the 2 pin is connected with the 1 pin and the second ends of the resistors R16 and R19, the anode of the diode D15 is connected with the cathode of the diode D16, the first ends of the resistors R16 and R19 and the second end of the resistor R18, the cathode of the diode D11 is connected with the cathode of the diode D15, the second ends of the resistors R13 and R15 and the second end of the capacitor C16, and the first end of the resistor R11 is connected with the cathode of the zener diode D13 and the signal SV; the 2-pin connection VIN of the current sensor, the 4-pin connection VIN _1, the 3-pin connection VIN 18 and the cathode of D19, the 1-pin connection VIN 20 and the cathode of D22, the cathode of the diode D18 is connected with the cathode of the diode D20 and the second ends of the resistors R23 and R28 and the second end of the capacitor C25, the first end of the resistor R23 is connected with the cathode of the zener diode D21 and the second end of the capacitor C27 and the second end of the resistor R24, the first end of the resistor R24 is connected with the signal SI, and the cathodes of the stabilivolt D13 and D21, the cathodes of the diodes D12, D16, D19 and D22, the first ends of the capacitors C16, C27 and C25, and the first ends of the resistors R13, R18 and R28 are all connected to ground.

Preferably, the PWM generating module comprises resistors R2, R3, R7-R10, R12, R14, R17, R20, R22, R25-R27, R29, capacitors C7-C9, C24, C26, a PWM generating chip U1, triodes Q3-Q5, a diode D14, an optocoupler U2 and a potentiometer RP 1; a pin 1 of a PWM generating chip U1 is connected with a pin 9 and a pin 2 to connect a second end of a resistor R2 and a first end of a resistor R3, a pin 5 is connected with a second end of a capacitor C8 and a second end of a resistor R7, a pin 7 is connected with a first end of a resistor R7, a pin 6 is connected with a second end of a resistor R10, a pin 8 is connected with a second end of a capacitor C9, a pin 10 is connected with a signal SHUT, a pin 11 is connected with a signal Gate, a pin 12 is connected with ground, a pin 13 is connected with a 12V power supply, a pin 14 is connected with a signal Gate _ GND, a pin 15 is connected with a pin 12V, a pin 16 is connected with a second end of a capacitor C17 and a second end of a resistor R3, a second end of a resistor R9 is connected with a first end of a resistor R10, a first end of a resistor R9 is connected with a first end of a resistor R8 and a pin 1 of a potentiometer RP1 and a signal SD, a second end of a resistor R8 is connected with a, Pins 3 are all connected to the ground; a pin 1 of the optocoupler U2 is connected with a pin 2 of the diode Q3, pins 2 and 4 are connected to ground, a pin 3 is connected with a signal SD, a pin 3 of the triode Q3 is connected with a 3.3V power supply, a pin 1 is connected with the second end of the resistor R14 and the first end of the resistor R12, the second end of the resistor R12 is connected with the cathode of the diode D14, the anode of the diode D14 is connected with the second end of the resistor R17 and the second end of the resistor R20, the first end of the resistor R17 is connected with the signal SDS, a pin 2 of the triode is connected with a 12V power supply and the second end of the resistor R22 and the second end of the capacitor C24, a pin 1 is connected with the first ends of the resistors R22 and R25 and the first end of the capacitor C24, a pin 3 is connected with the second end of the resistor R29 and the second end of the capacitor C26 and the signal SHUT, a pin 1 of the transistor Q5 is connected with the second end of the resistor R27, the second end of the resistor R26 is connected to the signal SHUT _ G, and the first ends of the resistors R14, R20, R27, R29 and the capacitor C26 are all connected to ground.

Preferably, the control protection module comprises a singlechip U3, resistors R37-R54, triodes Q12-Q17 and light-emitting diodes LED1-LED 3; a pin 1 connecting signal K1 and a pin 25 connecting signal K2 of a singlechip U3, a pin 20 connecting signal F1, a pin 2 connecting signal SHUT _ G, a pin 19 connecting the second end of a resistor R24, a pin 3 connecting signal SV, a pin 23 connecting the second end of a resistor R47, a pin 18 connecting the second end of a resistor R50, a pin 14 connecting GND, a pin 11 connecting signal SDS, a pin 7 connecting SI, a pin 1 connecting the first end of a resistor R42 of a transistor Q12, a pin 2 connecting ground, a pin 3 connecting the second end of a resistor R39, a pin 1 connecting the first end of a resistor R40 and the first end of a resistor R39 of a transistor Q13, a pin 2 connecting the first end of a resistor R37 and the second end of a resistor R40, a pin 3 connecting the second end of a resistor R41 and the second end of a resistor R38, a first end of a resistor R38 connecting the anode of a light emitting diode LED1, and a pin 1 connecting the first end of a resistor R46Q 27 connecting the first end of a resistor, a pin 2 is connected to ground, a pin 3 is connected to the second end of the resistor R44, a pin 1 of a transistor Q15 is connected to the first end of the resistor R46 and the first end of the resistor R44, a pin 2 is connected to the first end of the resistor R43 and the second end of the resistor R46, a pin 3 is connected to the second end of the resistor R48 and the second end of the resistor R45, a first end of a resistor R45 is connected to the anode of the LED2, a pin 1 of a transistor Q17 is connected to the first end of the resistor R50, a pin 2 is connected to ground, a pin 3 is connected to the second end of the resistor R52, a pin 1 of a transistor Q16 is connected to the first end of the resistor R51 and the first end of the resistor R52, a pin 2 is connected to the first end of the resistor R49 and the second end of the resistor R51, a pin 3 is connected to the second end of the resistor R53 and the second end of the resistor R54, a first end of the resistor R53 is connected to the anode of the LED 86, the cathodes of the light emitting diodes LED1-LED3 and the first ends of the resistors R41, R48 and R54 are all connected to ground.

Preferably, the high-voltage packet module power interface is connected with a connector J1, and the voltage feedback interface is connected with a connector J2.

The beneficial effects of the technical scheme are as follows: (1) the utility model provides a high-voltage power supply of a household range hood purification device, which detects the state of the high-voltage power supply in real time through a singlechip, and when the ignition or the discharge occurs between polar plates, the ignition or the discharge phenomenon occurring between the polar plates can be effectively reduced by improving the PWM grade to reduce the output voltage of the high-voltage power supply;

(2) the utility model discloses high voltage power supply output voltage and protection voltage range are adjusted to the accessible potentiometre to satisfy different application demands.

Drawings

FIG. 1 is a functional block diagram of a high voltage power supply;

FIG. 2 is a circuit diagram of a low voltage power supply module;

FIG. 3 is a circuit diagram of a start-up circuit block;

FIG. 4 is a circuit diagram of a filter rectifier circuit module;

FIG. 5 is a circuit diagram of an LLC resonant module;

FIG. 6 is a circuit diagram of an over current/discharge detection circuit module;

FIG. 7 is a circuit diagram of a PWM wave generation and drive circuit module;

FIG. 8 is a circuit diagram of a control protection module;

fig. 9 is a wiring diagram of a high voltage packet module.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings.

As shown in fig. 1, a high-voltage power supply of a purification device of a household range hood comprises a low-voltage power supply module, a starting circuit module, a filtering rectification module, an LLC resonance module, an overcurrent/discharge detection module, a PWM generation module, a control protection module and a high-voltage pack module. 220V alternating current is generated into 12V and 5V low-voltage power supplies through a low-voltage power supply module to be used as direct current power supplies of a starting circuit module, an LLC resonance module, a PWM generation module and a control protection module; the starting circuit module is used for controlling the on-off of 220V alternating current and the filtering rectification module and realizing the soft start of the high-voltage power supply; the filtering rectification module rectifies the 220V alternating current into three-level direct current which is used as an input power supply of the LLC resonance module; the PWM generating module is used for generating a PWM control signal for controlling the LLC resonance module; the LLC resonance module is connected with the high-voltage package module to form an LLC resonance circuit and output a high-voltage power supply; the over-current/discharge detection module is used for detecting the output current of the LLC resonance module and the output voltage of the high-voltage pack module and feeding back the detected current and voltage information to the control protection module; the control protection module is used for displaying the state of the high-voltage power supply, controlling the starting circuit module and adjusting the PWM generation module to generate PWM frequency grade.

As shown in FIG. 2, the low-voltage power module comprises a transformer T1, diodes D1, D3-D6, D8-D10, capacitors C1-C6, C10-C15, a voltage regulator IC1, an IC2, an IC3 and a common-mode inductor T2. 220V alternating current is filtered by capacitors C5 and C6 and a common mode inductor T2 and then is connected to a transformer T1 to generate two paths of 12V alternating current, the first path of 12V alternating current is firstly converted into direct current through a rectifier bridge consisting of diodes D1 and D3-D5, and after being filtered by capacitors C3 and C4, the direct current is stabilized by a voltage regulator IC1 and filtered by capacitors C1 and C2 to generate a 12V direct current power supply; the first path of 12V alternating current is firstly converted into direct current through a rectifier bridge composed of diodes D6 and D8-D10, filtered through capacitors C14 and C15, stabilized by a voltage regulator tube IC3 and filtered through capacitors C12 and C13 to generate a 12V direct current power supply, and finally stabilized by the voltage regulator tube IC2 and filtered through capacitors C10 and C11 to generate a 5V direct current power supply.

As shown in fig. 3, the starting circuit module includes relays KK1, KK2, thermistor RT1, diodes D2, D7, transistors Q1, Q2, and resistors R1, R4-R6. When the high-voltage power supply starts to output, firstly, a control signal K1 is switched from a low level to a high level, the relay KK1 is driven to be closed through the triode Q1, at the moment, the thermistor RT1 is connected into a circuit in series, the resistance value of the thermistor KK1 is gradually reduced to be close to zero along with the work of the high-voltage power supply, then, a control signal K2 is switched from the low level to the high level, the relay KK2 is driven to be closed through the triode Q2, at the moment, the thermistor RT1 is in short circuit, and the thermistor RT1 does not work; the high-voltage power supply is started smoothly by controlling the relays KK1 and KK2 to be closed in sequence.

As shown in fig. 4, the smoothing and rectifying module includes a rectifier bridge DB1, a transient suppression diode D17, capacitors C17-C23, and resistors R15 and R21. The alternating current of 220V is changed into direct current through a rectifier bridge DB1, surge voltage is suppressed through a transient suppression diode D17, then the alternating current is filtered through capacitors C19-C21, and finally three-level direct current is output after the alternating current passes through capacitors C17, C18, C22 and C23 and resistors R15 and R21.

As shown in FIG. 5, the LLC resonant module comprises a transformer T3, MOS transistors Q7, Q10, a triode Q6, Q8, Q9, Q11, an inductor L1, a connector J1, capacitors C28-C32, resistors R30-R36, zener diodes D25, D27, D31 and D32, and diodes D23, D24, D26 and D28-D30. The signal Gate is a Gate driving signal, the Gate _ GND is a ground of the Gate driving signal, the driving signal is connected to pins 7 and 8 of the transformer T3 through a driving circuit consisting of resistors R31, R33, a triode Q6, Q8, Q9, Q11, diodes D23, D26, D28 and D29, a pin 6 of the transformer T3 outputs a driving signal F1 after passing through the resistor R34 and the capacitor C32, and the driving signal is collected by a single chip microcomputer; pins 1 and 2 and pins 3 and 4 of the transformer T3 output two complementary MOS tube driving signals, wherein the driving signals output by the pins 1 and 2 of the transformer T3 are used for driving the MOS tube Q7, and the driving signals output by the pins 3 and 4 of the transformer T3 are used for driving the MOS tube Q10; MOS pipe Q7, Q10 constitute half-bridge to constitute LLC resonant circuit with electric capacity C28, C29 inductance L1 high-voltage package, resistance R30, R36, electric capacity C30, C31 constitute MOS pipe buffer circuit.

As shown in fig. 6, the overcurrent/discharge detection module includes resistors R11, R13, R16, R18, R19, R23, R24, R28, diodes D11, D12, D15, D16, D18-D20, D22, zener diodes D13, D21, capacitors C16, C25, C27, a current sensor LL1, a connector J2, and a potentiometer RP 2. The voltage signal fed back by the high-voltage packet module is converted into a direct-current voltage signal through a rectification and feedback signal composed of diodes D11, D12, D15, D16, resistors R16, R18, R19 and a potentiometer RP2, and then the direct-current voltage signal is output to the single chip microcomputer through a high-frequency filter circuit composed of a resistor R11 and a capacitor C16 and a voltage regulator tube D13, wherein the RP2 is used for adjusting the maximum voltage allowed to be output by the high-voltage power supply, and the larger the resistance of the RP2 is, the larger the maximum voltage is allowed to be output; the current of the LLC resonant circuit is converted into a voltage signal through a current sensor LL1, then converted into a direct current voltage signal through a rectifier bridge consisting of diodes D18-D20 and D22, and then output to the single chip microcomputer through a high-frequency filter circuit consisting of capacitors C27, C25, resistors R23 and R24 and a voltage regulator tube D21.

As shown in fig. 7, the PWM generating module includes resistors R2, R3, R7-R10, R12, R14, R17, R20, R22, R25-R27, R29, capacitors C7-C9, C24, C26, a PWM generating chip U1, transistors Q3-Q5, a diode D14, an optocoupler U2, and a potentiometer RP 1. The capacitor C8, the resistors R7-R10, the potentiometer RP1 and the PWM generating chip SG 1 form a PWM generating circuit, wherein the potentiometer RP1 is used for adjusting PWM output frequency, the larger the access resistance of the potentiometer RP1 is, the lower the output PWM frequency is, the enable signal SHUT _ G output by the PWM generating chip U1 is used for controlling whether the PWM generating chip U1 outputs PWM waves or not through a driving circuit formed by a triode Q4, a Q5, a resistor R22, R25-R27, R29, a capacitor C24 and a capacitor C26, and the SDS signal is used for controlling the on-off of a U2 through a driving circuit formed by a triode Q3, a diode D14, resistors R12, R14, R17 and R20 so as to control whether the potentiometer RP1 is short-circuited or not, thereby controlling the output PWM frequency.

As shown in fig. 8, the control protection module includes a single chip microcomputer U3, resistors R37-R54, triodes Q12-Q17, and light emitting diodes LED1-LED 3. Pins 18, 19 and 23 of the singlechip U3 control on and off of a light emitting diode LED1-LED3 through a driving circuit consisting of a resistor R37-R54 and a triode Q12-Q17 so as to display the state of a high-voltage power supply, output signals of pins 1 and 25 control a starting circuit, output signals of pins 2 and 11 control generation of PWM signals, pins 3 and 7 acquire overvoltage and overcurrent signals, and pin 20 acquires the frequency of the PWM signals.

As shown in fig. 9, the high voltage packet module power interface is connected to connector J1 and the voltage feedback interface is connected to connector J2.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a domestic lampblack absorber purifier high voltage power supply which characterized in that: the device comprises a low-voltage power supply module, a starting circuit module, a filtering rectification module, an LLC resonance module, an overcurrent/discharge detection module, a PWM generation module, a control protection module and a high-voltage pack module; the input end of the filtering and rectifying module is connected with the output end of the starting circuit module, the output end of the filtering and rectifying module is connected with the LLC resonance module, the output end of the LLC resonance module is connected with the high-voltage pack, the 220V alternating-current power supply is connected with the input ends of the starting circuit module and the low-voltage power supply module, the output power supply of the low-voltage power supply module is used as the power supply of the PWM wave generation module, the overcurrent/discharge detection module and the control protection module, the output signal of the PWM wave generation module controls the MOSFET of the LLC resonance module, the output signal of the control protection module controls the starting circuit module and the PWM wave generation module, the input end of the.

2. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the low-voltage power supply module comprises a transformer T1, diodes D1, D3-D6, D8-D10, capacitors C1-C6, C10-C15, a voltage regulator tube IC1, an IC2, an IC3 and a common-mode inductor T2; pin 3 of the common-mode inductor T2 and the second end of the capacitor C6 are connected to 220VL, pin 6 of the common-mode inductor T2 and the first end of the capacitor C6 are connected to 220VN, pin 1 of the transformer T1 is connected to pin 4 of the common-mode inductor T2 and the second end of the capacitor C5, pin 2 is connected to pin 1 of the common-mode inductor T2 and the first end of the capacitor C5, the anode of the diode D1 is connected to pin 10 of the transformer T1 and the cathode of the diode D4, the cathode of the diode D1 is connected to the cathode of the diode D3 and to the second ends of the capacitors C3 and C4 and pin 1 of the regulator IC 4, the cathode of the diode D4 is connected to pin 9 of the transformer T4 and the anode of the diode D4, the first ends of the capacitors C4-C4 and pin 2 of the regulator IC 4 are grounded, and the pin 3 of the regulator IC 4 is connected to the second end V +12 of the capacitor C4; the anode of the diode D6 is connected with the 8 pin of the transformer T1 and the cathode of the diode D9, the cathode of the diode D6 is connected with the cathode of the diode D8 and connected with the second ends of the capacitors C14 and C15 and the pin 1 of the stabilivolt IC3, the anode of the diode D8 is connected with the cathode of the diode D10 and the pin 7 of the transformer T1, the anodes of the diodes D9 and D10, the second ends of the capacitors C10-C15, the pin 2 of the stabilivolt IC2 and the pin 2 of the IC3 are grounded, the pin 3 of the stabilivolt IC3 is connected with the second ends of the capacitors C12 and C13 and the pin 1 of the stabilivolt IC2, and the pin 3 of the stabilivolt IC2 is connected with the second ends of the capacitors C10 and C11 and outputs 5.

3. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the starting circuit module comprises relays KK1 and KK2, a thermistor RT1, diodes D2 and D7, triodes Q1 and Q2, and resistors R1 and R4-R6; pin 2 and pin 5 of relay KK1 are connected with pin 220VL, pin 6 is connected with a 12V power supply and a cathode of diode D2, pin 1 is connected with a pin 3 of diode D2 and transistor Q1, pin 3 and pin 4 are connected with pin 2 and pin 5 of relay KK2 and a second end of thermistor RT1, pin 4 and pin 3 of relay KK2 are connected with pin 220VL _ IN and a first end of thermistor RT1, pin 6 is connected with a power supply 12V and a cathode of diode D7, pin 1 is connected with a pin 3 of diode D7 and a pin Q2, pin 1 of transistor Q1 is connected with a second end of resistors R1 and R4, a first end of resistor R1 is connected with signal K1, pin 1 of transistor Q599 is connected with a second end of resistors R5 and R6, a first end of resistor R5 is connected with signal K2, a first end of resistors R4 and R6, a pin 2 of transistor Q1 and a pin 2 of transistor Q2 are grounded.

4. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the filtering and rectifying module comprises a rectifying bridge DB1, a transient suppression diode D17, capacitors C17-C23, resistors R15 and R21; pin 2 of the rectifier bridge DB1 is connected to 220VN _ IN, pin 4 is connected to 220VL _ IN, pin 1 is connected to the second terminal of the transient suppression diode D17, the second terminal of the resistor R15 and the second terminals of the capacitors C17-C21 to output the voltage + VIN, pin 3, the first terminal of the resistor R21 and the first terminals of the capacitors C19-C23 are connected to VIN, and the second terminal of the resistor R21, the first terminal of the resistor R15, the second terminals of the capacitors C22, C23 and the first terminals of the capacitors C17, C18 are connected to VIN.

5. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the LLC resonance module comprises a transformer T3, MOS transistors Q7, Q10, a triode Q6, Q8, Q9, Q11, an inductor L1, a connector J1, capacitors C28-C32, resistors R30-R36, zener diodes D25, D27, D31 and D32, and diodes D23, D24, D26 and D28-D30; the first ends of the capacitors C28 and C29 are connected with VIN _1, the second ends of the capacitors are connected with the first end of the inductor L1, and the second end of the inductor L1 is connected with the 2 pins of the connector J1; pin 8 of transformer T3 is connected to the cathode of diode D26, the anode of diode D23, pin 2 of transistors Q6 and Q8, pin 7 is connected to the cathode of diode D29, the anode of diode D28, pin 2 of transistors Q28 and Q28, pin 6 is connected to the first terminal of resistor R28, pin 1 is connected to the cathode of diode D28 and the second terminal of resistor R28, pin 2 is connected to the anode of zener diode D28, the S pin of MOS transistor Q28, the first terminal of D pin capacitor C28 and the second terminal of capacitor C28, pin 3 is connected to the cathode of diode D28 and the second terminal of resistor R28, pin 4 is connected to the anode of zener diode D28, the first terminal of resistor R28, the S pin of MOS transistor Q28 and VIN, pin 5, the first terminal of capacitor C28, the anode of diodes D28, the anode of transistors D28, transistor Q28, the 3D pin 3 of Q28, the cathode of diodes D28 and the cathode of transistors Q28, the transistors V28 and Q28 are connected to ground, pins 1 of the triodes Q6 and Q8 are both connected with a first end of a resistor R31, a second end of the resistor R31 is connected with a signal Gate, pins 1 of the triodes Q9 and Q11 are both connected with a first end of a resistor R33, a second end of the resistor R33 is connected with a signal Gate _ GND, a second end of the resistor R34 is connected with a second end of a capacitor C32 and a signal F1, an anode of a diode D24 and a first end of the resistor R32, the anode of the zener diode D25 is connected to the G pin of the MOS transistor Q7, the cathode of the zener diode D27 is connected to the cathode of the zener diode D27, the anode of the diode D30, the first end of the resistor R35 and the anode of the zener diode D31 are connected to the G pin of the MOS transistor Q10, the cathode of the zener diode D31 is connected to the cathode of the zener diode D32, the D pin of the MOS transistor Q7 and the second end of the resistor R30 are both connected to + VIN, the first end of the resistor R30 is connected to the second end of the capacitor C30, and the second end of the resistor R36 is connected to the first end of the capacitor C31.

6. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the over-current/discharge detection module comprises resistors R11, R13, R16, R18, R19, R23, R24, R28, diodes D11, D12, D15, D16, D18-D20, D22, zener diodes D13 and D21, capacitors C16, C25 and C27, a current sensor LL1, a connector J2 and a potentiometer RP 2; the anode of the diode D11 is connected with the cathode of the diode D12 and the 2 pin of the connector J2, the 3 pin of the potentiometer RP2 is connected with the 1 pin of the connector J2, the 2 pin is connected with the 1 pin and the second ends of the resistors R16 and R19, the anode of the diode D15 is connected with the cathode of the diode D16, the first ends of the resistors R16 and R19 and the second end of the resistor R18, the cathode of the diode D11 is connected with the cathode of the diode D15, the second ends of the resistors R13 and R15 and the second end of the capacitor C16, and the first end of the resistor R11 is connected with the cathode of the zener diode D13 and the signal SV; the 2-pin connection VIN of the current sensor, the 4-pin connection VIN _1, the 3-pin connection VIN 18 and the cathode of D19, the 1-pin connection VIN 20 and the cathode of D22, the cathode of the diode D18 is connected with the cathode of the diode D20 and the second ends of the resistors R23 and R28 and the second end of the capacitor C25, the first end of the resistor R23 is connected with the cathode of the zener diode D21 and the second end of the capacitor C27 and the second end of the resistor R24, the first end of the resistor R24 is connected with the signal SI, and the cathodes of the stabilivolt D13 and D21, the cathodes of the diodes D12, D16, D19 and D22, the first ends of the capacitors C16, C27 and C25, and the first ends of the resistors R13, R18 and R28 are all connected to ground.

7. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the PWM generating module comprises resistors R2, R3, R7-R10, R12, R14, R17, R20, R22, R25-R27, R29, capacitors C7-C9, C24, C26, a PWM generating chip U1, triodes Q3-Q5, a diode D14, an optocoupler U2 and a potentiometer RP 1; a pin 1 of a PWM generating chip U1 is connected with a pin 9 and a pin 2 to connect a second end of a resistor R2 and a first end of a resistor R3, a pin 5 is connected with a second end of a capacitor C8 and a second end of a resistor R7, a pin 7 is connected with a first end of a resistor R7, a pin 6 is connected with a second end of a resistor R10, a pin 8 is connected with a second end of a capacitor C9, a pin 10 is connected with a signal SHUT, a pin 11 is connected with a signal Gate, a pin 12 is connected with ground, a pin 13 is connected with a 12V power supply, a pin 14 is connected with a signal Gate _ GND, a pin 15 is connected with a pin 12V, a pin 16 is connected with a second end of a capacitor C17 and a second end of a resistor R3, a second end of a resistor R9 is connected with a first end of a resistor R10, a first end of a resistor R9 is connected with a first end of a resistor R8 and a pin 1 of a potentiometer RP1 and a signal SD, a second end of a resistor R8 is connected with a, Pins 3 are all connected to the ground; a pin 1 of the optocoupler U2 is connected with a pin 2 of the diode Q3, pins 2 and 4 are connected to ground, a pin 3 is connected with a signal SD, a pin 3 of the triode Q3 is connected with a 3.3V power supply, a pin 1 is connected with the second end of the resistor R14 and the first end of the resistor R12, the second end of the resistor R12 is connected with the cathode of the diode D14, the anode of the diode D14 is connected with the second end of the resistor R17 and the second end of the resistor R20, the first end of the resistor R17 is connected with the signal SDS, a pin 2 of the triode is connected with a 12V power supply and the second end of the resistor R22 and the second end of the capacitor C24, a pin 1 is connected with the first ends of the resistors R22 and R25 and the first end of the capacitor C24, a pin 3 is connected with the second end of the resistor R29 and the second end of the capacitor C26 and the signal SHUT, a pin 1 of the transistor Q5 is connected with the second end of the resistor R27, the second end of the resistor R26 is connected to the signal SHUT _ G, and the first ends of the resistors R14, R20, R27, R29 and the capacitor C26 are all connected to ground.

8. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the control protection module comprises a singlechip U3, resistors R37-R54, triodes Q12-Q17 and light emitting diodes LED1-LED 3; a pin 1 connecting signal K1 and a pin 25 connecting signal K2 of a singlechip U3, a pin 20 connecting signal F1, a pin 2 connecting signal SHUT _ G, a pin 19 connecting the second end of a resistor R24, a pin 3 connecting signal SV, a pin 23 connecting the second end of a resistor R47, a pin 18 connecting the second end of a resistor R50, a pin 14 connecting GND, a pin 11 connecting signal SDS, a pin 7 connecting SI, a pin 1 connecting the first end of a resistor R42 of a transistor Q12, a pin 2 connecting ground, a pin 3 connecting the second end of a resistor R39, a pin 1 connecting the first end of a resistor R40 and the first end of a resistor R39 of a transistor Q13, a pin 2 connecting the first end of a resistor R37 and the second end of a resistor R40, a pin 3 connecting the second end of a resistor R41 and the second end of a resistor R38, a first end of a resistor R38 connecting the anode of a light emitting diode LED1, and a pin 1 connecting the first end of a resistor R46Q 27 connecting the first end of a resistor, a pin 2 is connected to ground, a pin 3 is connected to the second end of the resistor R44, a pin 1 of a transistor Q15 is connected to the first end of the resistor R46 and the first end of the resistor R44, a pin 2 is connected to the first end of the resistor R43 and the second end of the resistor R46, a pin 3 is connected to the second end of the resistor R48 and the second end of the resistor R45, a first end of a resistor R45 is connected to the anode of the LED2, a pin 1 of a transistor Q17 is connected to the first end of the resistor R50, a pin 2 is connected to ground, a pin 3 is connected to the second end of the resistor R52, a pin 1 of a transistor Q16 is connected to the first end of the resistor R51 and the first end of the resistor R52, a pin 2 is connected to the first end of the resistor R49 and the second end of the resistor R51, a pin 3 is connected to the second end of the resistor R53 and the second end of the resistor R54, a first end of the resistor R53 is connected to the anode of the LED 86, the cathodes of the light emitting diodes LED1-LED3 and the first ends of the resistors R41, R48 and R54 are all connected to ground.

9. A high voltage power supply for a purification apparatus of a home range hood as claimed in claim 1, wherein: the high-voltage pack module power interface is connected with a connector J1, and the voltage feedback interface is connected with a connector J2.

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