Intelligent purifier power supply

Abstract

The utility model relates to an intelligent purifier power supply, which comprises a power supply module, a high-frequency oscillation module, a boost module and an output rectification module, the output rectification module is connected with a sampling detection module, the sampling detection module transmits polar plate discharge signals to an MCU module, and the MCU module changes the output of a voltage regulation module through a voltage setting module. And high voltage between the positive and negative electrodes of the purifier polar plate is finally changed through the high-frequency oscillation module. During use, when a small amount of smoke dust is accumulated between the polar plates of the range hood, the discharge of the polar plates can be detected, the voltage between the polar plates can be automatically reduced, so that the polar plates do not discharge any more, and the range hood can continuously and stably adsorb the smoke dust through static electricity. And after more smoke dust is accumulated between the polar plates and reaches the limit again, the intelligent purifier power supply stops generating high voltage, and an alarm is given to prompt a user to clean.

Description

Technical Field

[0001] The utility model relates to the technical field of power supplies, in particular to a power supply for an intelligent purifier. Background Art

[0002] Most current range hood purifiers on the market use a single voltage power supply. This voltage is connected between the plates used to absorb oil smoke, generating an electrostatic field that absorbs smoke particles. When even a small amount of oil smoke or debris clings to the plates, and a certain thickness of oil smoke accumulates between the plates, the distance between the plates decreases. The high voltage of the electrostatic field breaks through the air, causing an electrical discharge. After this discharge, the range hood needs to clean the plates before it can resume operation. Frequent cleaning is inconvenient for users and fails to meet the requirements for long-term use of the range hood purifier.

[0003] There are also power supplies that can change voltage, but the voltage can only be adjusted with a manual knob, and the electrostatic field voltage cannot be automatically adjusted to meet the needs of long-term use.

[0004] In addition, most of the existing range hood purification power supplies do not have a protective shutdown function and lack cleaning prompts, which brings inconvenience to users. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent purifier power supply which can detect the working condition between the electrode plates of the range hood and automatically adjust the electrostatic field voltage, thereby extending the range hood cleaning cycle.

[0006] The purpose of the utility model is achieved in this way. A smart purifier power supply includes a power supply module, a high-frequency oscillation module, a boost module, an output rectifier module, the output rectifier module is connected to a sampling detection module, the other end of the sampling detection module is connected to the MCU module, the MCU module is also connected to an alarm prompt module and a voltage setting module, the voltage setting module is connected to the voltage regulation module, the other end of the voltage regulation module is connected to the high-frequency oscillation module, the output end of the high-frequency oscillation module is connected to the boost module, the output end of the boost module is connected to the output rectifier module, and the output rectifier module is connected to the positive and negative electrodes of the purifier plate.

[0007] Preferably, the sampling detection module is composed of a plurality of capacitors connected in series, one end of the sampling detection module is connected to the output rectifier module and the negative electrode of the purifier plate, and the other end is connected to the signal detection pin of the MCU module.

[0008] Preferably, the voltage regulating module is two comparators composed of an operational amplifier chip U4 and a peripheral circuit, and the output pin of the chip U4 is connected to the input pin of the high-frequency oscillation module control chip.

[0009] Preferably, the voltage setting module includes setting resistors and switch MOS tubes, and multiple groups of setting resistors and switch MOS tubes are provided. One end of the setting resistors is connected in parallel, and the other end is connected in parallel through the switch MOS tube. The G level of the switch MOS tube is connected to the control pin of the MCU module, and the switch MOS tube is controlled to be turned on by the MCU module.

[0010] Preferably, the power supply module includes a rectifier bridge, a resistor-capacitor step-down circuit, one end of the resistor-capacitor step-down circuit is connected to a voltage-stabilizing diode, and the positive and negative power supply ends of the high-frequency oscillation module chip are connected in parallel with both ends of the voltage-stabilizing diode.

[0011] Preferably, the alarm prompt module includes a buzzer, which is connected to the control pin of the MCU module through a current-limiting resistor.

[0012] Preferably, the high-frequency oscillation module includes a high-frequency oscillation circuit control chip and two MOS tubes, the output end of the MOS tube is connected to the primary of the transformer of the boost module, and the control ends of the two MOS tubes are connected to the output pin of the high-frequency oscillation circuit control chip. The model of the high-frequency oscillation circuit control chip is IR2161.

[0013] Preferably, the output rectifier module is a full-bridge rectifier circuit composed of four high-voltage diodes, and the output end of the output rectifier module is connected to the positive and negative poles of the purifier.

[0014] Since a sampling detection module, a voltage setting module, a voltage regulation module, and an MCU module alarm prompt module are set in the purifier power supply, the sampling detection module can detect the voltage between the plates in real time when the purifier is working. When it is detected that the plates are discharging, the discharge signal will be transmitted to the MCU module. The MCU module controls the change of the resistance combination value of the voltage setting module. This changed resistance value is used to change the output voltage of the high-frequency oscillation circuit through the voltage regulation module, thereby reducing the output voltage between the plates. After the high-voltage voltage between the plates is reduced, the voltage between the plates with oil smoke and dust is reduced, and the discharge voltage is not reached. No discharge is generated, and the range hood can continue to be used without cleaning, thereby extending the cleaning cycle of the range hood.

[0015] When the oil smoke and dust continue to adhere between the plates and accumulate to a thicker thickness, the distance between the purifier plates is further reduced. Under the plate voltage after the voltage reduction, the discharge distance becomes smaller and the breakdown condition is reached again. The purifier plates discharge again. After the MCU module detects the discharge, it again uses the voltage setting module and the voltage regulation module to continue to reduce the voltage between the purifier plates, so that the voltage between the purifier plates does not meet the discharge conditions again, and no discharge occurs. The range hood can continue to work, and the usage time is once again extended.

[0016] When the purifier power supply is working: detect discharge - reduce the voltage between the purifier plates - cannot discharge - continue to work - after the oil smoke and dust accumulates - discharge again - the MCU module continues to reduce the voltage between the purifier plates - cannot discharge - continue to work; the above purifier power supply working state cycle is a process. After the intelligent purifier power supply repeats this process many times, the smoke and dust accumulation between the purifier plates reaches the cleaning conditions. When cleaning is required, the MCU module controls a buzzer through a current limiting resistor to sound, generating a cleaning alarm signal to prompt the user to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of device connection in an embodiment.

[0018] Figure 2 It is a principle block diagram of an embodiment;

[0019] Figure 3 1 is a circuit diagram of an embodiment; DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the figure: 100, power supply module; 200, high-frequency oscillation module; 300, boost module; 400, output rectifier module; 410, purifier plate; 500, sampling and detection module; 600, alarm prompt module; 700, MCU module; 800, voltage setting module; 900, voltage regulation module.

[0022] Depend on Figure 1 It can be seen that this embodiment includes a purifier power supply connected to the purifier plate 410 through a high-voltage output line.

[0023] From Figure 2, Figure 3 It can be seen that when working, the smart purifier power supply includes a power module 100, a high-frequency oscillation module 200, a boost module 300, an output rectifier module 400, and the output rectifier module 400 is connected to a sampling detection module 500. The sampling detection module 500 is composed of capacitors C15 and C16 connected in series. One end of the capacitor C15 is connected to the rectifier diode D10 of the output rectifier module 400 and the negative electrode of the purifier plate 410, and the other end is connected to the signal detection pin of the MCU module 700.

[0024] The MCU module 700 is also connected to an alarm prompt module 600 and a voltage setting module 800. The voltage setting module 800 is connected to the voltage setting module 900. The other end of the voltage setting module 900 is connected to the high-frequency oscillation module 200. The output end of the high-frequency oscillation module 200 is connected to the boost module 300. The output end of the boost module 300 is connected to the output rectifier module 400. The output rectifier module 400 is connected to the positive and negative electrodes of the purifier plate 410.

[0025] The voltage regulation module 900 consists of an operational amplifier chip U4 and peripheral circuits. Chip U4 contains two operational amplifiers, which form two comparators via peripheral resistors R15, R16, R22, R23, and R29. The output pin of chip U4 is connected to the input pin of the high-frequency oscillator module 200 control chip U1 via D12. The input signal to the voltage regulation module 900 comes from the voltage setting module 800.

[0026] The voltage setting module 800 includes setting resistors R17, R18, R20, R21, R24, and R25, and MOSFET switches Q1, Q2, and Q3. Setting resistors R17 and R18 form a group with MOSFET switch Q1, setting resistors R20 and R21 form a group with MOSFET switch Q2, and setting resistors R24 and R25 form a group with MOSFET switch Q3. One end of the setting resistors is connected in parallel, and the other end is connected in parallel through MOSFET switches. The G terminals of each group of MOSFET switches are connected to different control pins of the MCU module 700. The high and low levels of the control pins of the MCU module 700 chip U5 control the conduction and shutdown of each MOSFET switch. This allows the resistors connected to the MOSFET switches to be connected in parallel to both ends of resistor R17, thereby changing the resistance value of the output resistor combination of the voltage setting module 800.

[0027] The power module 100 includes a rectifier bridge D1, a resistor-capacitor step-down circuit consisting of resistors R1 and C2. After the AC power is rectified, it is stepped down by the resistor-capacitor step-down circuit and supplied to the chip U1 for operation. One end of the resistor-capacitor step-down circuit is connected to the Zener diode D3. The positive and negative power terminals of the high-frequency oscillation module 200 chip U1 are connected in parallel with the two ends of the Zener diode D3.

[0028] The alarm prompt module 600 includes a buzzer, which is connected to the control pin of the chip U5 of the MCU module 700 through a current limiting resistor R33. The sound of the buzzer is controlled by the high and low levels of the chip U5 control pin.

[0029] The high-frequency oscillator module 200 includes a high-frequency oscillator circuit control chip U1 and two MOS transistors U2 and U3. When the high-frequency oscillator module 200 is powered on, it controls the two MOS transistors to generate a high-frequency AC voltage. The output end of the MOS transistor is connected to the primary of the transformer of the boost module 300. The transformer is a large-ratio transformer with a large turns ratio, which boosts the high-frequency AC voltage generated by the control chip U1 to tens of thousands of volts. The control ends of the two MOS transistors U2 and U3 are respectively connected to the output pins of the high-frequency oscillator circuit control chip. The high-frequency oscillator circuit control chip U1 is model IR2161.

[0030] The output rectifier module 400 is a full-bridge rectifier circuit composed of four high-voltage rectifier diodes D8, D9, D10, and D11. The output end of the output rectifier module 400 is connected to the positive and negative poles of the purifier plate 410 to generate the boost circuit.

[0031] Since the sampling detection module 500, the voltage setting module 800, the voltage setting module 900, and the MCU module alarm prompt module 600 are set in the purifier power supply, when the purifier is working, the sampling detection module 500 can detect the voltage between the purifier plates 410 in real time. When the plates are discharged, the voltage between the plates will drop. The sampling detection module 500 will transmit the changing voltage signal to the MCU module 700 through the capacitors C15 and C16. After the internal program judgment, the MCU module 700 outputs a high or low level through the I / O pin of the MCU module 700 to control the switch MOS tube of the voltage setting module 800 to be turned on or off. The conduction of the switch MOS tube of the voltage setting module 800 is controlled by the MCU module 700. Or closed, the resistance combination value of the set resistor group changes, and this changed resistance value is transmitted to the voltage setting module 900. The two comparators inside the voltage setting module 900 generate a changed voltage according to the changed resistance value, and transmit it to the chip U1 of the high-frequency oscillation module 200 through D12 and R29, thereby changing the output voltage of the high-frequency oscillation circuit. When the output high voltage is reduced, the voltage between the purifier plates 410 with oil smoke and dust is reduced through the wire, and the discharge voltage required for the current distance between the purifier plates 410 is not reached, and no discharge is generated, so that the range hood can continue to be used without the need to immediately clean the purifier plates 410, thereby extending the cleaning cycle of the range hood.

[0032] When the oil smoke dust continues to adhere between the purifier plates 410 and accumulates to a thicker thickness, the distance between the plates is further reduced. Under the existing voltage, the breakdown condition is reached again, and discharge occurs again. After the MCU module 700 detects the discharge, it further reduces the voltage through the voltage setting module 900, so that the plates do not discharge and the range hood can continue to work, reducing the number of maintenance times and extending the user's usage time.

[0033] When the purifier power supply is working: detecting discharge - reducing the voltage between the purifier plates 410 - unable to discharge - continuing to work - after the oil smoke and dust accumulates - discharging again - the MCU module 700 continues to reduce the voltage between the purifier plates 410 - unable to discharge - continuing to work; the above-mentioned purifier power supply working state cycle is a process. After the intelligent purifier power supply repeats this process many times, the smoke and dust accumulation between the purifier plates 410 reaches the cleaning conditions. When cleaning is required, the MCU module controls a buzzer through a current-limiting resistor to sound, generating a cleaning alarm signal to prompt the user to clean.

[0034] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed in the present invention should be covered by the protection scope of the present invention.

Claims

1. A smart purifier power supply, comprising a power module, a high-frequency oscillation module, a boost module, and an output rectifier module, characterized in that: the output rectifier module is connected to a sampling and detection module, the other end of the sampling and detection module is connected to the MCU module, the MCU module is also connected to an alarm prompt module and a voltage setting module, the voltage setting module is connected to the voltage regulation module, the other end of the voltage regulation module is connected to the high-frequency oscillation module, the output end of the high-frequency oscillation module is connected to the boost module, the output end of the boost module is connected to the output rectifier module, and the output rectifier module is connected to the positive and negative electrodes of the purifier plate.

2. The intelligent purifier power supply according to claim 1, characterized in that: The sampling detection module is composed of a plurality of capacitors connected in series. One end of the sampling detection module is connected to the output rectifier module and the negative electrode of the purifier plate, and the other end is connected to the signal detection pin of the MCU module.

3. The intelligent purifier power supply according to claim 2, characterized in that: The voltage adjustment module is composed of two comparators composed of an operational amplifier chip U4 and a peripheral circuit. The output pin of the chip U4 is connected to the input pin of the high-frequency oscillation module control chip.

4. The intelligent purifier power supply according to claim 3, characterized in that: The voltage setting module includes setting resistors and switch MOS tubes. There are multiple groups of setting resistors and switch MOS tubes. One end of the setting resistors is connected in parallel, and the other end is connected in parallel through the switch MOS tube. The G terminal of the switch MOS tube is connected to the control pin of the MCU module, and the switch MOS tube is controlled to be turned on by the MCU module.

5. The intelligent purifier power supply according to claim 1, characterized in that: The power supply module includes a rectifier bridge, a resistor-capacitor step-down circuit, one end of the resistor-capacitor step-down circuit is connected to a voltage-stabilizing diode, and the positive and negative power supply ends of the high-frequency oscillation module chip are connected in parallel with both ends of the voltage-stabilizing diode.

6. The intelligent purifier power supply according to claim 1, characterized in that: The alarm prompt module includes a buzzer, which is connected to the control pin of the MCU module through a current limiting resistor.

7. The intelligent purifier power supply according to claim 1, characterized in that: The high-frequency oscillation module includes a high-frequency oscillation circuit control chip and two MOS tubes. The output end of the MOS tube is connected to the primary of the transformer of the boost module, and the control end of the two MOS tubes is connected to the output pin of the high-frequency oscillation circuit control chip. The model of the high-frequency oscillation circuit control chip is IR2161.

8. The intelligent purifier power supply according to claim 1, characterized in that: The output rectifier module is a full-bridge rectifier circuit composed of four high-voltage diodes, and the output end of the output rectifier module is connected to the positive and negative poles of the purifier.

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