Air purifier fan control circuit and purifier device

Abstract

The utility model discloses a fan control circuit of an air purifier and a purifier device. The fan control circuit of the air purifier comprises a main control module, a power management module, a motor driving module, a high-voltage module and a key module, the power management module comprises a first power supply unit, a second power supply unit and a third power supply unit; the first power supply unit is electrically connected with the main control module and the key module, the second power supply unit is electrically connected with the high-voltage module, and the third power supply unit is electrically connected with the motor driving module; and the main control module is electrically connected with the motor driving module, the high-voltage module and the key module respectively. According to the utility model, independent and separated power supply of multiple power supplies of the air purifier can be realized, the power supply stability of the air purifier is improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of purifier devices, in particular to an air purifier fan control circuit and a purifier device. Background Art

[0002] An air purifier is mainly a product for removing indoor air pollutants (generally including dust, pollen, peculiar smell, decoration pollution such as formaldehyde, bacteria, allergens, etc.) and effectively improving air cleanliness. An air purifier usually consists of systems such as a high-voltage circuit, an anion generator, a ventilator, and an air filter.

[0003] When the purifier is running, the ventilator inside the machine makes the indoor and in-vehicle air circulate. After the polluted air is filtered by the air filter inside the machine, various pollutants are removed or adsorbed, and then the air is continuously ionized by the anion generator installed at the air outlet to generate a large number of anions, which are sent out by the micro-fan to form an anion flow, achieving the purpose of cleaning and purifying the air.

[0004] In the prior art, an air purifier system usually samples a power supply system to supply power to each functional module on the PCB circuit board. Once there is a problem with the power supply system in this power supply method, it will cause the entire air purifier system to fail to work properly and fall into a paralyzed state, and it will also make it difficult to troubleshoot during maintenance and reduce the maintenance efficiency. Therefore, inventing a new air purifier fan control circuit and a purifier device is an urgent problem for those skilled in the art. Summary of the Utility Model

[0005] The purpose of this application is to provide an air purifier fan control circuit and a purifier device. In this solution, it is possible to achieve independent and separate power supply for multiple paths of the air purifier, improve the power supply stability of the air purifier, and enhance the user experience.

[0006] To solve the above technical problems, this application provides an air purifier fan control circuit, which includes a main control module, a power management module, a motor drive module, a high-voltage module, and a key module; the power management module includes a first power supply unit, a second power supply unit, and a third power supply unit;

[0007] The first power supply unit is electrically connected to the main control module and the key module respectively, the second power supply unit is electrically connected to the high-voltage module, and the third power supply unit is electrically connected to the motor drive module;

[0008] The main control module is electrically connected to the motor drive module, the high-voltage module, and the key module respectively.

[0009] Preferably, the air purifier fan control circuit further includes an infrared radio frequency module;

[0010] The infrared radio frequency module is electrically connected to the first power supply unit and the main control module respectively.

[0011] Preferably, the first power supply unit includes a connection interface unit, a voltage transformation unit, a first step-down conversion unit, and a voltage stabilization unit;

[0012] The connection interface unit is electrically connected to the voltage transformation unit, the voltage transformation unit is electrically connected to the first step-down conversion unit, and the first step-down conversion unit is electrically connected to the voltage stabilization unit;

[0013] The second power supply unit is electrically connected to the voltage transformation unit, and the third power supply unit is electrically connected to the voltage transformation unit.

[0014] Preferably, the second power supply unit includes a second step-down conversion unit;

[0015] The second step-down conversion unit is electrically connected to the voltage transformation unit and the high-voltage module respectively.

[0016] Preferably, the third power supply unit includes a low-pass filter unit, a rectification unit, and a boost conversion unit;

[0017] The voltage transformation unit is electrically connected to the low-pass filter unit, the low-pass filter unit is electrically connected to the rectification unit, the rectification unit is electrically connected to the boost conversion unit, and the boost conversion unit is electrically connected to the motor drive module.

[0018] Preferably, the motor drive module includes a motor drive unit, a first isolation unit, a second isolation unit, a third isolation unit, and a second connection unit;

[0019] The main control module is electrically connected to the motor drive unit, the first isolation unit, the second isolation unit, and the third isolation unit respectively, the second connection unit is electrically connected to the motor drive unit, the first isolation unit, the second isolation unit, and the third isolation unit respectively, and the second connection unit is electrically connected to the blower.

[0020] Preferably, the motor drive unit includes a drive sub-unit, a power supply processing sub-unit, and a switch control sub-unit;

[0021] The power supply processing sub-unit is electrically connected to the third power supply unit, the switch control sub-unit is electrically connected to the power supply processing sub-unit, and the drive sub-unit is electrically connected to the switch control sub-unit and the second connection unit respectively.

[0022] Preferably, the button module includes a button unit and an indication unit;

[0023] The button unit is electrically connected to the indication unit, the button unit is electrically connected to the main control module, and the indication unit is electrically connected to the main control module.

[0024] Preferably, the button module further includes a first voltage dividing unit and a second voltage dividing unit;

[0025] The first voltage dividing unit is electrically connected to the main control module and the button unit respectively, and the second voltage dividing unit is electrically connected to the main control module and the indication unit respectively.

[0026] To solve the above technical problems, the present application provides a purifier device, including the air purifier fan control circuit described above.

[0027] The air purifier fan control circuit and the purifier device of the present utility model have the following beneficial effects. An air purifier fan control circuit disclosed by the present utility model includes a main control module, a power management module, a motor drive module, a high-voltage module, and a button module; the power management module includes a first power supply unit, a second power supply unit, and a third power supply unit; the first power supply unit is electrically connected to the main control module and the button module respectively, the second power supply unit is electrically connected to the high-voltage module, and the third power supply unit is electrically connected to the motor drive module; the main control module is electrically connected to the motor drive module, the high-voltage module, and the button module respectively. In the present application, the first power supply unit, the second power supply unit, and the third power supply unit are respectively used to supply power to different functional modules. Therefore, the present utility model can realize independent and separate power supply for multiple paths of the air purifier, improve the power supply stability of the air purifier, and enhance the user experience. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will further illustrate the present utility model in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0029] Figure 1 is a schematic block diagram of an air purifier fan control circuit according to a preferred embodiment of the present utility model;

[0030] Figure 2 is a schematic block diagram of an air purifier fan control circuit according to another preferred embodiment of the present utility model;

[0031] Figure 3 is a circuit schematic diagram of an infrared radio frequency module of an air purifier fan control circuit according to a preferred embodiment of the present utility model.

[0032] Figure 4 It is the circuit schematic diagram of the first power supply unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model;

[0033] Figure 5 It is the circuit schematic diagram of the second power supply unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model;

[0034] Figure 6 It is the circuit schematic diagram of the third power supply unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model;

[0035] Figure 7 It is the circuit schematic diagram of the first isolation unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model.

[0036] Figure 8 It is the circuit schematic diagram of the second connection unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model;

[0037] Figure 9 It is the circuit schematic diagram of a motor drive unit of a fan control circuit for an air purifier in a preferred embodiment of the present utility model;

[0038] Figure 10 It is the circuit schematic diagram of the infrared radio frequency module and the key module of a fan control circuit for an air purifier in a preferred embodiment of the present utility model. Detailed implementation manners

[0039] The core of this application is to provide a fan control circuit for an air purifier and a purifier device. In this solution, independent and separate power supplies for multiple paths of the air purifier can be achieved, improving the power supply stability of the air purifier and enhancing the user experience.

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0041] Please refer to Figure 1 , Figure 1 , which is the principle block diagram of a fan control circuit for an air purifier provided by this application, including a main control module 1, a power management module 2, a motor drive module 3, a high-voltage module 4, and a key module 5; the power management module 2 includes a first power supply unit 21, a second power supply unit 22, and a third power supply unit 23;

[0042] The first power supply unit 21 is electrically connected to the main control module 1 and the button module 5 respectively. The second power supply unit is electrically connected to the high-voltage module 4. The third power supply unit 23 is electrically connected to the motor drive module 3.

[0043] The main control module 1 is electrically connected to the motor drive module 3, the high-voltage module 4 and the button module 5 respectively.

[0044] In the prior art, the air purifier system usually samples a power supply system to supply power to each functional module on the PCB circuit board. Once there is a problem with the power supply system in this power supply method, it will cause the entire air purifier system to fail to work properly and fall into a paralyzed state. It will also cause difficulties in troubleshooting during maintenance and reduce the maintenance efficiency.

[0045] In view of the above disadvantages, in this application, the power supply stability of the air purifier is improved through the cooperation of the main control module 1, the power management module 2, the motor drive module 3, the high-voltage module 4 and the button module 5.

[0046] Specifically, in this embodiment, the main control module 1 is set as an MCU (Microcontroller Unit, also known as a single-chip microcomputer (Single Chip Microcomputer or microcontroller). It appropriately reduces the frequency and specifications of the central processing unit (Central Processing Unit; CPU), and integrates peripherals such as memory, counter (Timer), USB, A / D conversion, UART, PLC, DMA, and even the LCD drive circuit on a single chip to form a chip-level computer for different combinations of control in different application scenarios. In another embodiment, the main control module 1 can also be implemented through a DSP (Digital Signal Process), an FPGA (Field Programmable Gate Array), an SOC (System On Chip), an ARM (Acorn RISCMachine, microprocessor), etc., which are not specifically limited here.

[0047] Specifically, in this embodiment, the first power supply unit is used to provide a 5V working voltage to the main control module 1 and the button module 5. The second power supply unit 22 is used to provide a 12V working voltage to the high-voltage module 4. The third power supply unit 23 provides a 15V working voltage to the motor drive module 3. Therefore, this application can achieve independent and separate power supply for multiple power sources.

[0048] In summary, the present application provides a control circuit for an air purifier fan. In this solution, it includes a main control module 1, a power management module 2, a motor drive module 3, a high-voltage module 4, and a key module 5. The power management module 2 includes a first power supply unit 21, a second power supply unit 22, and a third power supply unit 23. The first power supply unit 21 is electrically connected to the main control module 1 and the key module 5 respectively. The second power supply unit is electrically connected to the high-voltage module 4. The third power supply unit 23 is electrically connected to the motor drive module 3. The main control module 1 is electrically connected to the motor drive module 3, the high-voltage module 4, and the key module 5 respectively. In the present application, the first power supply unit, the second power supply unit, and the third power supply unit are respectively used to supply power to different functional modules. Therefore, the utility model can realize independent and separate power supply for multiple paths of the air purifier, improve the power supply stability of the air purifier, and enhance the user experience.

[0049] Based on the above embodiments:

[0050] Please refer to Figure 2 , Figure 2 which is the principle block diagram of a control circuit for an air purifier fan provided by the present application.

[0051] Please refer to Figure 3 , Figure 3 which is the circuit schematic diagram of an infrared radio frequency module provided by the present application.

[0052] As a preferred embodiment, a control circuit for an air purifier fan further includes an infrared radio frequency module 6;

[0053] The infrared radio frequency module 6 is electrically connected to the first power supply unit 21 and the main control module 1 respectively.

[0054] Specifically, in this embodiment, the infrared radio frequency module 6 is used to cooperate with a remote control to realize infrared remote control of the air purifier.

[0055] Please refer to Figure 4 , Figure 4 which is the circuit schematic diagram of a first power supply unit provided by the present application.

[0056] As a preferred embodiment, the first power supply unit 21 includes a connection interface unit 211, a voltage transformation unit 212, a first step-down conversion unit 213, and a voltage stabilization unit 214;

[0057] The connection interface unit 211 is electrically connected to the voltage transformation unit 212. The voltage transformation unit 212 is electrically connected to the first step-down conversion unit 213. The first step-down conversion unit 213 is electrically connected to the voltage stabilization unit 214;

[0058] The second power supply unit 22 is electrically connected to the voltage transformation unit 212, and the third power supply unit 23 is electrically connected to the voltage transformation unit 212.

[0059] Specifically, in this embodiment, the 85V - 245V, 50 / 60HZ voltage accessed through the connection socket J2 is output as three power supplies of the first power supply unit 21, the second power supply unit 22, and the third power supply unit 23 through the SW1 protection switch.

[0060] Specifically, in this embodiment, the first power supply enters the first power supply unit 21, is first transformed by the voltage transformation unit 212 and step - down converted by the first step - down conversion unit 213 to output a 12V voltage, and then passes through the voltage stabilization unit 214 to output 5V for the main control module 1 and the key module 5 to work.

[0061] Please refer to Figure 5 , Figure 5 which is the circuit schematic diagram of a second power supply unit provided by this application.

[0062] As a preferred embodiment, the second power supply unit 22 includes a second step - down conversion unit;

[0063] The second step - down conversion unit is electrically connected to the voltage transformation unit 212 and the high - voltage module 4 respectively.

[0064] Specifically, in this embodiment, the second power supply enters the second step - down conversion unit to provide the working voltage for the high - voltage module 4.

[0065] Please refer to Figure 6 , Figure 6 which is the circuit schematic diagram of a third power supply unit provided by this application.

[0066] As a preferred embodiment, the third power supply unit 23 includes a low - pass filter unit 231, a rectification unit 232, and a boost conversion unit 233;

[0067] The voltage transformation unit 212 is electrically connected to the low - pass filter unit 231, the low - pass filter unit 231 is electrically connected to the rectification unit, the rectification unit 232 is electrically connected to the boost conversion unit 233, and the boost conversion unit 233 is electrically connected to the motor drive module 3.

[0068] Specifically, in this embodiment, the third power supply is filtered by the low - pass filter unit 231 and then output to the rectification unit 232 for rectification, and after being boosted by the boost conversion unit 233, it outputs a 350V main motor voltage and a 15V control voltage to supply power to the fan.

[0069] Please refer to Figure 7 , Figure 7 which is the circuit schematic diagram of a first isolation unit provided by this application.

[0070] Please refer to Figure 8 , Figure 8 , which is a circuit schematic diagram of a second connection unit provided for this application.

[0071] Please refer to Figure 9 , Figure 9 , which is a circuit schematic diagram of a motor drive unit provided for this application.

[0072] As a preferred embodiment, the motor drive module 3 includes a motor drive unit 31, a first isolation unit 32, a second isolation unit 33, a third isolation unit 34, and a second connection unit 35;

[0073] The main control module 1 is electrically connected to the motor drive unit 31, the first isolation unit 32, the second isolation unit 33, and the third isolation unit 34 respectively. The second connection unit 35 is electrically connected to the motor drive unit 31, the first isolation unit 32, the second isolation unit 33, and the third isolation unit 34 respectively. The second connection unit 35 is electrically connected to the blower.

[0074] Specifically, in this embodiment, the operation of the gear position of the human-machine interaction interface is realized through the key board, and the main control module 1 performs response output control.

[0075] Specifically, in this embodiment, the main control module 1 controls the working voltage of the blower through the second isolation unit 33 and controls the belt-adjusting PWM signal of the blower through the third isolation unit 34 to achieve the purpose of controlling the operation and speed regulation of the motor. At the same time, the speed state of the motor is fed back to the main control module 1 through the first isolation unit 32 to achieve the purpose of closed-loop speed control.

[0076] As a preferred embodiment, the motor drive unit 31 includes a drive sub-unit, a power supply processing sub-unit, and a switch control sub-unit;

[0077] The power supply processing sub-unit is electrically connected to the third power supply unit 23. The switch control sub-unit is electrically connected to the power supply processing sub-unit. The drive sub-unit is electrically connected to the switch control sub-unit and the second connection unit 35 respectively.

[0078] Specifically, in this embodiment, the model of the drive sub-unit can be set to FAN5533. In another preferred embodiment, the model of the drive sub-unit is not specifically limited.

[0079] Please refer to Figure 10 , Figure 10 , which is a circuit schematic diagram of a key module provided for this application.

[0080] As a preferred embodiment, the key module 5 includes a key unit and an indication unit;

[0081] The key unit is electrically connected to the indication unit, the key unit is electrically connected to the main control module 1, and the indication unit is electrically connected to the main control module 1.

[0082] As a preferred embodiment, the key module 5 further includes a first voltage dividing unit and a second voltage dividing unit;

[0083] The first voltage dividing unit is electrically connected to the main control module 1 and the key unit respectively, and the second voltage dividing unit is electrically connected to the main control module 1 and the indication unit respectively.

[0084] This application also provides a purifier device, including an air purifier fan control circuit.

[0085] For the introduction of an air purifier fan control circuit provided by this application, please refer to the above embodiments, and this application will not be elaborated here.

[0086] It should be noted that in this specification, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0087] The above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An air purifier fan control circuit, characterized in that: It includes a main control module, a power management module, a motor drive module, a high-voltage module and a key module; the power management module includes a first power supply unit, a second power supply unit and a third power supply unit; The first power supply unit is electrically connected to the main control module and the key module respectively, the second power supply unit is electrically connected to the high voltage module, and the third power supply unit is electrically connected to the motor drive module; The main control module is electrically connected to the motor drive module, the high voltage module and the key module respectively.

2. The air purifier fan control circuit according to claim 1, characterized in that: The air purifier fan control circuit also includes an infrared radio frequency module; The infrared radio frequency module is electrically connected to the first power supply unit and the main control module respectively.

3. The air purifier fan control circuit according to claim 1, characterized in that: The first power supply unit includes a connection interface unit, a voltage transformation unit, a first step-down conversion unit and a voltage stabilization unit; The connection interface unit is electrically connected to the voltage transformation unit, the voltage transformation unit is electrically connected to the first step-down conversion unit, and the first step-down conversion unit is electrically connected to the voltage stabilization unit; The second power supply unit is electrically connected to the transformer unit, and the third power supply unit is electrically connected to the transformer unit.

4. The air purifier fan control circuit according to claim 3, characterized in that: The second power supply unit includes a second step-down conversion unit; The second step-down conversion unit is electrically connected to the voltage transformation unit and the high-voltage module respectively.

5. The air purifier fan control circuit according to claim 4, characterized in that: The third power supply unit includes a low-pass filter unit, a rectifier unit and a boost conversion unit; The transformer unit is electrically connected to the low-pass filter unit, the low-pass filter unit is electrically connected to the rectifier unit, the rectifier unit is electrically connected to the boost converter unit, and the boost converter unit is electrically connected to the motor drive module.

6. The air purifier fan control circuit according to claim 1, characterized in that: The motor driving module includes a motor driving unit, a first isolation unit, a second isolation unit, a third isolation unit and a second connecting unit; The main control module is electrically connected to the motor drive unit, the first isolation unit, the second isolation unit and the third isolation unit respectively, the second connection unit is electrically connected to the motor drive unit, the first isolation unit, the second isolation unit and the third isolation unit respectively, and the second connection unit is electrically connected to the fan.

7. The air purifier fan control circuit according to claim 6, characterized in that: The motor drive unit includes a drive subunit, a power processing subunit and a switch control subunit; The power processing subunit is electrically connected to the third power supply unit, the switch control subunit is electrically connected to the power processing subunit, and the driving subunit is electrically connected to the switch control subunit and the second connection unit respectively.

8. The air purifier fan control circuit according to claim 1, characterized in that: The key module includes a key unit and an indication unit; The button unit is electrically connected to the indicating unit, the button unit is electrically connected to the main control module, and the indicating unit is electrically connected to the main control module.

9. The air purifier fan control circuit according to claim 8, characterized in that: The key module further includes a first voltage dividing unit and a second voltage dividing unit; The first voltage dividing unit is electrically connected to the main control module and the button unit respectively, and the second voltage dividing unit is electrically connected to the main control module and the indication unit respectively.

10. A purifier device, characterized in that: An air purifier fan control circuit comprising any one of claims 1 to 9.

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