CN210411153U - High-voltage constant-voltage output control circuit of electrostatic purifier - Google Patents
High-voltage constant-voltage output control circuit of electrostatic purifier Download PDFInfo
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- CN210411153U CN210411153U CN201921019183.6U CN201921019183U CN210411153U CN 210411153 U CN210411153 U CN 210411153U CN 201921019183 U CN201921019183 U CN 201921019183U CN 210411153 U CN210411153 U CN 210411153U
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Abstract
The utility model discloses a high-pressure constant voltage output control circuit of electrostatic purifier, it includes the step-down circuit, take AD sampling module's microcontroller, digital potentiometer and DC-DC conversion module, the output of high voltage generator is connected to the input of step-down circuit, the collection end of microcontroller is connected to the output of step-down circuit, this digital potentiometer is connected to the output of microcontroller, the feedback end of this DC-DC conversion module is connected to the output of digital potentiometer, the low pressure input of high voltage generator is connected to the output of DC-DC conversion module; the control circuit has the advantages of simple and novel structure, low cost and high control precision.
Description
Technical Field
The utility model relates to a high pressure constant voltage output control circuit of electrostatic purifier.
Background
The electrostatic indoor air purifier makes the dust in the air to charge positive charge based on the anode corona discharge principle, and collects the charged particles in the dust collector with the aid of coulomb force to reach the aim of dedusting and purifying air. It is composed of ionization device, dust collector, blower and power supply.
The high-voltage control of the electrostatic air purifier in the market at present adopts an open loop type, namely, a certain input voltage is given to a high-voltage generator, unipolar or bipolar high voltage is obtained according to a boosting principle, the high voltage is applied to an electrostatic filter, and the filter can be made of an aluminum plate or a steel plate to form an electric field with certain strength, so that the purpose of dust collection is achieved. However, the output voltage of the high-voltage generator of the existing electrostatic air purifier is constant and cannot be adjusted, and whether the output voltage of the high-voltage generator is abnormal or not can not be monitored in real time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high pressure constant voltage output control circuit of electrostatic purifier, it has overcome in the background art the not enough of prior art.
The utility model provides a technical scheme that its technical problem adopted is:
a high-voltage constant-voltage output control circuit of an electrostatic purifier comprises a voltage reduction circuit, a microcontroller with an AD sampling module, a digital potentiometer and a DC-DC conversion module, wherein the input end of the voltage reduction circuit is connected with the output end of a high-voltage generator, the output end of the voltage reduction circuit is connected with the acquisition end of the microcontroller, the output end of the microcontroller is connected with the digital potentiometer, the output end of the digital potentiometer is connected with the feedback end of the DC-DC conversion module, the output end of the DC-DC conversion module is connected with the low-voltage input end of the high-voltage generator, the output voltage of the high-voltage generator is reduced through the voltage reduction circuit and then is acquired by the microcontroller, the microcontroller controls the resistance value and the output analog quantity of the digital potentiometer according to the acquired signals, and then the DC-DC conversion module outputs direct-current voltage to the high-voltage generator according to the signals of the feedback end of the DC, thereby realizing the feedback control of the output voltage of the high-voltage generator.
In one embodiment: the voltage reduction circuit is a resistance voltage division circuit, and the high-voltage generator performs voltage division and reduction through a voltage division resistance.
In one embodiment: the voltage reduction circuit is a voltage reduction winding added in the high-voltage generator, and the output of the high-voltage generator is reduced by the voltage reduction winding.
In one embodiment: the digital potentiometer adopts MAX5432/5433 chips or MCP41010 chips.
In one embodiment: the DC-DC conversion module adopts a P3596L-ADJ chip or an LM2596 chip.
In one embodiment: the microcontroller employs an SC92F7321 chip or an SH79F083A chip.
Compared with the background technology, the technical scheme has the following advantages:
1. the present case constitutes the real time monitoring to high voltage generator output voltage and carries out real time feedback adjustment to its output voltage through step-down circuit, microcontroller, digital potentiometer and DC-DC conversion module, forms the closed loop control to high voltage generator output voltage, realizes the control and the adjustable of high voltage generator output voltage to can rationally set for the filter interelectrode high pressure, improve electrode subassembly's clean efficiency, the production of control ozone to a certain extent, avoid high-pressure uncontrollable nature, lead to the safety problem.
2. The present case simple structure, novelty, with low costs, and control accuracy is high.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic diagram of a high-voltage constant-voltage output control circuit of an electrostatic purifier according to a preferred embodiment.
Fig. 2 is a schematic diagram of a high-voltage constant-voltage output control circuit of an electrostatic purifier according to another preferred embodiment.
Detailed Description
Referring to fig. 1 and 2, a high-voltage constant-voltage output control circuit of an electrostatic purifier includes a voltage-reducing circuit 10, a microcontroller 20 with an AD sampling module, a digital potentiometer 30 and a DC-DC conversion module 40, wherein an input terminal of the voltage-reducing circuit 10 is connected to an output terminal of a high-voltage generator 100, an output terminal of the voltage-reducing circuit 10 is connected to a collecting terminal of the microcontroller 20, voltage reduction of an output voltage of the high-voltage generator 100 is realized by the voltage-reducing circuit 10 and can be measured, an output terminal of the microcontroller 20 is connected to the digital potentiometer 30, an output terminal of the digital potentiometer 30 is connected to a feedback terminal of the DC-DC conversion module 40, and an output terminal of the DC-DC conversion module 40 is connected to a low-voltage input terminal of the high-voltage generator 100.
In a preferred embodiment, referring to fig. 1, the voltage-reducing circuit 10 is a resistor voltage-dividing circuit, and the high voltage generator 100 divides and reduces the voltage through a voltage-dividing resistor.
In another preferred embodiment, referring to fig. 2, the voltage-reducing circuit 10 is a voltage-reducing winding (not shown) added in the high-voltage generator, and reduces the voltage of the output of the high-voltage generator 100 through the voltage-reducing winding.
The digital potentiometer 30 is a digital-to-analog output and may be a MAX5432/5433 chip or a MCP41010 chip, but is not limited to these two chips.
The DC-DC conversion module 40 may use a P3596L-ADJ chip or an LM2596 chip, but is not limited to these two chips.
The microcontroller 20 employs an SC92F7321 chip or an SH79F083A chip, but is not limited to both chips.
The control circuit of the present application steps down the output voltage of the high voltage generator 100 through the step-down circuit 10, and then the control circuit is collected by the microcontroller 20, the microcontroller 20 outputs a digital control quantity to the digital potentiometer 30 according to the collected signal to control the resistance value and the output analog quantity of the digital potentiometer 30, the analog quantity is output to the feedback end of the DC-DC conversion module 40, and then the DC-DC conversion module 40 outputs the DC voltage subjected to feedback regulation to the high voltage generator 100 according to the signal of the feedback end, so as to realize the feedback control of the output voltage of the high voltage generator 100, and the feedback quantity is calculated in the microcontroller 20 and is embodied in the digital control quantity output by the microcontroller 20 to the digital potentiometer 30. The feedback quantity can be calculated by using the existing feedback calculation method.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (6)
1. The utility model provides a high pressure constant voltage output control circuit of electrostatic purification ware which characterized in that: comprises a voltage reduction circuit, a microcontroller with an AD sampling module, a digital potentiometer and a DC-DC conversion module, the input end of the voltage reduction circuit is connected with the output end of the high-voltage generator, the output end of the voltage reduction circuit is connected with the acquisition end of the microcontroller, the output end of the microcontroller is connected with the digital potentiometer, the output end of the digital potentiometer is connected with the feedback end of the DC-DC conversion module, the output end of the DC-DC conversion module is connected with the low-voltage input end of the high-voltage generator, the output voltage of the high-voltage generator is reduced through the voltage reduction circuit, and the DC-DC conversion module outputs direct current voltage to the high voltage generator according to a signal of a feedback end of the DC-DC conversion module, so that the feedback control of the output voltage of the high voltage generator is realized.
2. The high-voltage constant-voltage output control circuit of an electrostatic purifier according to claim 1, wherein: the voltage reduction circuit is a resistance voltage division circuit, and the high-voltage generator performs voltage division and reduction through a voltage division resistance.
3. The high-voltage constant-voltage output control circuit of an electrostatic purifier according to claim 1, wherein: the voltage reduction circuit is a voltage reduction winding added in the high-voltage generator, and the output of the high-voltage generator is reduced by the voltage reduction winding.
4. The high-voltage constant-voltage output control circuit of an electrostatic purifier according to claim 1, wherein: the digital potentiometer adopts MAX5432/5433 chips or MCP41010 chips.
5. The high-voltage constant-voltage output control circuit of an electrostatic purifier according to claim 1, wherein: the DC-DC conversion module adopts a P3596L-ADJ chip or an LM2596 chip.
6. The high-voltage constant-voltage output control circuit of an electrostatic purifier according to claim 1, wherein: the microcontroller employs an SC92F7321 chip or an SH79F083A chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019183.6U CN210411153U (en) | 2019-07-02 | 2019-07-02 | High-voltage constant-voltage output control circuit of electrostatic purifier |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019183.6U CN210411153U (en) | 2019-07-02 | 2019-07-02 | High-voltage constant-voltage output control circuit of electrostatic purifier |
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| CN210411153U true CN210411153U (en) | 2020-04-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019322A (en) * | 2021-10-25 | 2022-02-08 | 深圳市道通合创新能源有限公司 | Insulation detection system, method and tool for power battery pack and new energy automobile |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019322A (en) * | 2021-10-25 | 2022-02-08 | 深圳市道通合创新能源有限公司 | Insulation detection system, method and tool for power battery pack and new energy automobile |
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Address after: 363000 Malata 10 industrial park, JINDA Road, Jinfeng Development Zone, Zhangzhou, Fujian Patentee after: Zhangzhou Zhonghuan Technology Co.,Ltd. Address before: 363000 Malata 10 industrial park, JINDA Road, Jinfeng Development Zone, Zhangzhou, Fujian Patentee before: Zhangzhou Malata central Polytron Technologies Inc. |
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| CP01 | Change in the name or title of a patent holder |