Air treatment device and control method and control device thereof

Abstract

The invention discloses an air treatment device and a control method and device thereof, and relates to the technical field of air purification. In the air treatment device, the discharge end of a first discharge part of a charge module faces an air incoming side, and the discharge end of a second discharge part of the charge module faces an air outgoing side; the control method of the air treatment device comprises the steps that based on opening of an air duct self-cleaning mode, an air outlet of an air duct is closed, and a draught fan is stopped; and a first preset electric signal is provided for the first discharging part, and a second preset electric signal is provided for the second discharging part, so that bidirectional ion wind carrying active purification factors is generated to conduct self-cleaning on the interior of the air duct. When air duct self-cleaning is carried out through the bidirectional charging effect of the charging module, space sterilization can be achieved, meanwhile, rapid object surface sterilization can be achieved through control over active purification factors, the needed energy consumption is low, the cleaning efficiency is high, and noise is low.

Description

Technical Field

[0001] The present application relates to, but is not limited to, the field of air purification technology. More specifically, it relates to a control method for an air treatment device, a control device for an air treatment device, and an air treatment device. Background Art

[0002] As people's requirements for the quality of life are getting higher and higher, people use fresh air filters to improve the indoor air quality. The fresh air filter can filter out tiny particles such as dust, pollen, bacteria, and viruses in the air, thereby reducing the concentration of pollutants in the indoor air and allowing people to breathe fresher and healthier air. In addition, the fresh air filter can also effectively prevent the indoor carbon dioxide concentration from being too high, thereby improving people's work and learning efficiency.

[0003] In the existing air conditioner, after working for a period of time, there are dust, bacteria and other sundries accumulated in the fresh air duct, which affects the quality of the fresh air entering the room. The fresh air duct is generally self-cleaned in the following ways:

[0004] 1) Exhaust technology: The fresh air fan in the fresh air duct rotates reversely to discharge the dust, bacteria and other sundries in the filter screen and the fresh air duct out of the fresh air duct. However, this method basically has no significant self-cleaning effect, and the dust and bacteria in the filter screen and the fresh air duct are basically not removed.

[0005] 2) High-temperature steam: High-temperature steam is introduced into the fresh air duct to remove dust and bacteria in the filter screen and the fresh air duct. However, the condensed water formed after the high-temperature steam condenses is likely to backflow into the fresh air duct, and even water flows into the room. Summary of the Invention

[0006] An embodiment of the present application provides a control method for an air treatment device. A charged module and a fan are provided in the air duct of the air treatment device. The discharge end of the first discharge part of the charged module faces the incoming air side, and the discharge end of the second discharge part of the charged module faces the outgoing air side;

[0007] The air treatment device has an air duct self-cleaning mode. The control method includes:

[0008] Based on the opening of the air duct self-cleaning mode, close the air outlet of the air duct and stop the fan;

[0009] Provide a first preset electrical signal to the first discharge part and a second preset electrical signal to the second discharge part to generate a bidirectional ion wind carrying active purification factors to self-clean the air duct.

[0010] An embodiment of the present application also provides a control device, which includes a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method described above are implemented.

[0011] An embodiment of the present application also provides an air treatment device, which includes an air duct, a fan, a charging module, and the control device described above. The fan and the charging module are arranged in the air duct. The charging module includes a first discharging part and a second discharging part. The discharging end of the first discharging part faces the incoming air side, and the discharging end of the second discharging part faces the outgoing air side;

[0012] Both the fan and the charging module are electrically connected to the control device, and the control device is configured to control the operation of the fan and the charging module.

[0013] In an embodiment of the present application, after the air treatment device turns on the self-cleaning mode of the air duct, the air outlet of the air duct can be closed, but the air inlet of the air duct (such as the fresh air inlet for introducing outdoor fresh air) can be kept open, and the fan is controlled to stop working; then a first preset electrical signal and a second preset electrical signal can be respectively provided to the first discharging part and the second discharging part of the charging module, so that the first discharging part and the second discharging part can be energized to generate ionic wind. Since the first discharging end of the first discharging part of the charging module faces the incoming air side and the second discharging end of the second discharging part of the charging module faces the outgoing air side, the directions of the ionic wind generated by the first discharging part and the second discharging part are opposite, and the ionic wind generated by the first discharging part and the second discharging part can blow in two directions. Therefore, the ionic wind can blow to the upstream and downstream of the charging module without the aid of a fan, and the ionic wind carrying a large number of active purification factors can perform sterilization and self-cleaning on the inner wall surface of the air duct and the components in the air duct as a whole.

[0014] Due to the bidirectional charging effect of the charging module including the first discharging part and the second discharging part, not only can space sterilization be achieved, but also rapid sterilization of the object surface can be realized by controlling the active purification factors, and the sterilization rate can exceed 99% in 5 minutes. In addition, when using this charging module for self-cleaning of the air duct, the energy consumption required is low, the cleaning efficiency is high, and there is no fan working, so the noise is low. Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of a charging module according to an embodiment of the present application;

[0016] Figure 2 is Figure 1 a left-view structural schematic diagram of the charging module shown;

[0017] Figure 3 is Figure 1 a cross-sectional structural schematic diagram of the charging module shown;

[0018] Figure 4 Schematic diagram of the internal structure of the charging module according to another embodiment of the present application;

[0019] Figure 5 is Figure 4 Schematic left view of the charging module shown;

[0020] Figure 6 Schematic diagram of the structure of the air treatment device according to an embodiment of the present application;

[0021] Figure 7 is Figure 6 Exploded view of the air treatment device shown;

[0022] Figure 8 Flowchart of the control method according to an embodiment of the present application.

[0023] Reference numerals:

[0024] 100 - Charging module, 1 - First discharge part, 11 - First discharge end, 2 - Second discharge part, 21 - Second discharge end, 3 - Grounding ring, 4 - Bracket, 41 - First bracket, 42 - Second bracket;

[0025] 500 - Housing, 501 - Fresh air inlet, 502 - Return air inlet, 503 - Air outlet, 504 - Baffle, 505 - Air duct; 600 - Fan, 700 - Electrostatic dust collection module. Detailed implementation manners

[0026] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0027] The embodiments of the present application provide a control method for an air treatment device.

[0028] As Figures 1 to 7As shown in the figure, a charging module 100 and a fan 600 are provided in the air duct 505 of the air handling device. The discharge end (the first discharge end 11) of the first discharge part 1 of the charging module 100 faces the incoming air side, and the discharge end (the second discharge end 21) of the second discharge part 2 of the charging module 100 faces the outgoing air side. The air handling device has an air purification mode and an air duct self-cleaning mode. Among them, in the air purification mode, outdoor fresh air or indoor return air can enter the air duct 505 and enter the room after being purified by the purification devices (such as: the charging module 100, the electrostatic dust collection module 700, etc.) in the air duct 505. When a large amount of dust, bacteria or other impurities accumulate on the inner wall surface of the air duct 505 or the components in the air duct 505 (such as: the fan 600, the electrostatic dust collection module 700, etc.), the air duct self-cleaning mode can be started to remove the dust, bacteria or other impurities on the inner wall surface of the air duct 505 or the components in the air duct 505, so as to realize the self-cleaning of the air duct 505.

[0029] As Figure 8 shown, the control method of the air handling device includes:

[0030] Based on the opening of the air duct self-cleaning mode, close the air outlet of the air duct and stop the fan.

[0031] Provide a first preset electrical signal to the first discharge part and a second preset electrical signal to the second discharge part to generate a bidirectional ion wind carrying active purification factors to self-clean the air duct.

[0032] After the air handling device turns on the air duct self-cleaning mode, the air outlet 503 of the air duct 505 can be closed, but the air inlet of the air duct 505 (such as: the fresh air inlet 501 for outdoor fresh air) can remain open, and the fan 600 is controlled to stop working; then a first preset electrical signal and a second preset electrical signal can be provided to the first discharge part 1 and the second discharge part 2 of the charging module 100 respectively, so that the first discharge part 1 and the second discharge part 2 can be energized to generate ion wind. Since the first discharge end of the first discharge part 1 of the charging module 100 faces the incoming air side and the second discharge end of the second discharge part 2 of the charging module 100 faces the outgoing air side, the directions of the ion winds generated by the first discharge part 1 and the second discharge part 2 are opposite, and the ion winds generated by the first discharge part 1 and the second discharge part 2 can blow in two directions. Therefore, it is possible to realize the ion wind blowing upstream and downstream of the charging module 100 without the help of the fan 600. The ion wind carrying a large number of active purification factors can perform bactericidal self-cleaning on the inner wall surface of the air duct 505 and the components in the air duct 505 as a whole.

[0033] Due to the bidirectional charging effect of the charging module 100 including the first discharge part 1 and the second discharge part 2, not only can space sterilization be achieved, but also rapid surface sterilization can be realized through the control of active purification factors, and the sterilization rate can exceed 99% in 5 minutes. In addition, when using the charging module 100 for self-cleaning of the air duct, the required energy consumption is low, the cleaning efficiency is high, and there is no operation of the fan 600, so the noise is low.

[0034] In some exemplary embodiments, both the first preset electrical signal and the second preset electrical signal are direct current electrical signals with a constant voltage value, and the voltage value of the first preset electrical signal is not less than the voltage value of the second preset electrical signal. Among them, the first preset electrical signal is a direct current electrical signal with a voltage value in the range of -2 kV to -25 kV, and the second preset electrical signal is a direct current electrical signal with a voltage value in the range of -2 kV to -25 kV.

[0035] The first preset electrical signal and the second preset electrical signal respectively provided to the first discharge part 1 and the second discharge part 2 of the charging module 100 are both direct current electrical signals, and the voltage value of the first preset electrical signal can be equal to the voltage value of the second preset electrical signal, or the voltage value of the first preset electrical signal can be slightly larger than the voltage value of the second preset electrical signal, so that the formed bidirectional ion wind can flow towards the air inlet of the air duct as a whole, so that the ion wind can be discharged to the outside through the air inlet of the air duct (connected to the outside through a fresh air duct).

[0036] The first preset electrical signal is a direct current electrical signal with a voltage value in the range of -2 kV to -25 kV, and the second preset electrical signal is a direct current electrical signal with a voltage value in the range of -2 kV to -25 kV. For example, the voltage values of the first preset electrical signal and the second preset electrical signal can be -8.5 kV. Since the first discharge part 1 and the second discharge part 2 of the charging module 100 input a stable high voltage and the voltage value is not high, no excessive ozone is generated when using the charging module 100 for self-cleaning of the air duct.

[0037] Of course, the first preset electrical signal and the second preset electrical signal are not limited to the above, and can also be adjusted according to actual needs.

[0038] In some exemplary embodiments, an electrostatic dust collection module 700 is further provided in the air duct 505 downstream of the charging module 100 (such as Figure 7As shown in the figure. Among them, in the air purification mode, the fan 600 operates, and the electrostatic dust collection module 700 and the charging module 100 can be powered on. Under the action of the fan 600, fresh outdoor air or indoor return air can enter the air duct 505. The first discharge part 1 and the second discharge part 2 of the charging module 100 can discharge, and make the PM2.5, bacteria, dust, pollen and other particulate matters in the air duct 505 charged (electrified), so that bacteria and the like are inactivated; the electrostatic dust collection module 700 can form an electric field by using high-voltage static electricity to adsorb the charged particulate matters, so that the particulate matters in the air are adsorbed onto the electrostatic dust collection module 700 to achieve the effect of purifying the air.

[0039] Based on this, as Figure 8 shown, the control method of the air treatment device further includes:

[0040] Based on the opening of the air duct self-cleaning mode, a third preset electric signal is provided to the electrostatic dust collection module 700. Among them, the third preset electric signal is a pulse electric signal.

[0041] When the air treatment device is in the air duct self-cleaning mode, a pulse electric signal (such as: pulse high-voltage electric signal) can be input to the electrostatic dust collection module 700, so that the two electrodes of the electrostatic dust collection module 700 (such as: one can be a negative high-voltage electrode, and the other can be grounded) can be switched and inverted, which is beneficial to the desorption of the charged particulate matters adsorbed on the negative high-voltage electrode of the electrostatic dust collection module 700, so as to realize the cleaning and sterilization of the electrostatic dust collection module 700.

[0042] In some exemplary embodiments, the control method of the air treatment device further includes:

[0043] Judging whether the air treatment device reaches the preset air duct self-cleaning condition; and

[0044] Based on the air treatment device reaching the air duct self-cleaning condition, controlling the air treatment device to turn on the air duct self-cleaning mode.

[0045] The control device can collect the working parameter information of the air treatment device and judge whether to turn on the air duct self-cleaning mode according to this information. Among them, when the collected information reaches the preset air duct self-cleaning condition, the air treatment device is controlled to turn on the air duct self-cleaning mode, and the self-cleaning of the air duct is realized by inputting a stable high-voltage electric signal to the charging module 100.

[0046] In some exemplary embodiments, the air duct self-cleaning condition includes that the total duration of the air treatment device in the air purification mode reaches a first preset duration. Among them, the first preset duration can be 500h (hours) to 1000h.

[0047] As Figure 8As shown, the control device can collect the duration of the air treatment device in the air purification mode. When the total duration of the air treatment device in the air purification mode reaches 500h to 1000h, the air duct self-cleaning mode is activated to self-clean the air duct 505. Of course, the first preset duration is not limited to the above and can also be adjusted according to actual needs.

[0048] It should be understood that in addition to controlling whether the air treatment device activates the air duct self-cleaning mode according to the total duration of the air treatment device in the air purification mode, other methods can also be used to control whether the air treatment device activates the air duct self-cleaning mode. For example, it can be controlled whether the air treatment device activates the air duct self-cleaning mode by detecting whether the content of bacteria, particulate matter, pollutants, etc. in the air duct 505 exceeds the preset requirements.

[0049] In some exemplary embodiments, the control method of the air treatment device further includes:

[0050] Based on the air treatment device reaching the preset condition for exiting the air duct self-cleaning mode, control the air treatment device to exit the air duct self-cleaning mode.

[0051] After the air treatment device activates the air duct self-cleaning mode, the control device can collect the working parameter information of the air treatment device and determine whether to exit the air duct self-cleaning mode based on this information. Among them, when the collected information reaches the preset condition for exiting the air duct self-cleaning mode, the air treatment device can be controlled to exit the air duct self-cleaning mode and enter the air purification mode.

[0052] In some exemplary embodiments, the condition for exiting the air duct self-cleaning mode includes that the duration of the air duct self-cleaning mode reaches a second preset duration. Among them, the second preset duration can be 5 minutes (min) to 20 minutes.

[0053] Such as Figure 8 As shown, when the duration of the air duct self-cleaning mode reaches 5 minutes to 20 minutes, the air treatment device can be controlled to exit the air duct self-cleaning mode and enter the air purification mode. Of course, the duration of the air duct self-cleaning mode is not limited to the above and can also be adjusted according to actual needs.

[0054] It should be understood that in addition to controlling the air treatment device to exit the air duct self-cleaning mode according to the duration, other methods can also be used to control whether the air treatment device exits the air duct self-cleaning mode. For example, it can be controlled whether the air treatment device exits the air duct self-cleaning mode by detecting whether the content of bacteria, particulate matter, pollutants, etc. in the air duct 505 reaches the preset requirements.

[0055] In some exemplary embodiments, the control method of the air treatment device further includes:

[0056] Based on the activation of the air purification mode, open the air inlet and outlet of the air duct, and start the fan;

[0057] Provide a fourth preset electrical signal to the first discharge part, provide a fifth preset electrical signal to the second discharge part, and provide a sixth preset electrical signal to the electrostatic dust collection module.

[0058] After the air treatment device exits the air duct self-cleaning mode, it can enter the air purification mode. In the air purification mode, the air inlet (such as the fresh air inlet 501 or the return air inlet 502) and the air outlet 503 of the air duct 505 are both open, and the fan 600 is operating. The electrostatic dust collection module 700 and the charging module 100 can be powered on to work. Outdoor fresh air or indoor return air can enter the air duct 505 under the action of the fan 600. The first discharge part 1 and the second discharge part 2 of the charging module 100 can discharge, so that particulate matters such as PM2.5, bacteria, dust, and pollen in the air duct 505 are charged, so that the particulate matters are adsorbed onto the electrostatic dust collection module 700 to achieve the effect of purifying the air.

[0059] In some exemplary embodiments, the fourth preset electrical signal, the fifth preset electrical signal, and the sixth preset electrical signal are all direct current electrical signals with a constant voltage value, and the voltage value of the fourth preset electrical signal is not lower than the voltage value of the fifth preset electrical signal.

[0060] Since the first discharge part 1 and the second discharge part 2 of the charging module 100 input a stable high voltage and the voltage value is not high, no excessive ozone is generated when using the charging module 100 for air purification. Since the electrostatic dust collection module 700 inputs a regulated high voltage electrical signal, under the action of the electric field formed by the high voltage static electricity of the electrostatic dust collection module 700, the charged particulate matters can be adsorbed onto the negative high voltage electrode of the electrostatic dust collection module 700 to achieve air purification.

[0061] The embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method provided in any of the above embodiments are implemented.

[0062] The embodiment of the present application also provides an air treatment device, including an air duct, a fan 600, a charging module 100, and the control device provided in the above embodiment. The fan 600 and the charging module 100 are arranged in the air duct 505. The charging module 100 includes a first discharge part 1 and a second discharge part 2. The first discharge end 11 of the first discharge part 1 faces the incoming air side, and the second discharge end 21 of the second discharge part 2 faces the outgoing air side. Among them, the fan 600 and the charging module 100 are both electrically connected to the control device, and the control device is configured to control the operation of the fan 600 and the charging module 100.

[0063] In this air treatment device, the control device can control the fan 600 to stop working in the duct self-cleaning mode, and the charging module 100 is powered on to work in the duct self-cleaning mode to self-clean the duct 505; the control device can also control the charging module 100 and the fan 600 to be powered on to work in the air purification mode to purify the fresh air entering from the outside or the indoor return air.

[0064] In some exemplary embodiments, the air treatment device further includes an electrostatic dust collection module 700. The electrostatic dust collection module 700 is disposed in the duct 505 and is located downstream of the charging module 100. The electrostatic dust collection module 700 is electrically connected to the control device, and the control device is configured to control the operation of the electrostatic dust collection module 700.

[0065] In this air treatment device, the control device can control the electrostatic dust collection module 700 to be powered on to work in the duct self-cleaning mode so that the particulate matter adsorbed on the electrostatic dust collection module 700 is desorbed; the control device can also control the electrostatic dust collection module 700 to be powered on to work in the air purification mode to purify the fresh air entering from the outside or the indoor return air.

[0066] In some exemplary embodiments, the electrostatic dust collection module 700 may include an electrostatic dust collection net. The electrostatic dust collection module 700 is a module that forms an electric field by high-voltage static electricity to adsorb charged particulate matter. The electrostatic dust collection module 700 may be provided with a high-voltage electrode (such as a negative high-voltage electrode) and a low-voltage electrode (such as a grounding electrode), and the high-voltage electrode and the low-voltage electrode can be switched and inverted according to the program. In the conventional dust removal state (air purification mode), the electrostatic dust collection module 700 can input a regulated high-voltage electrical signal; in the duct self-cleaning mode, the electrostatic dust collection module 700 can input a pulsed high-voltage electrical signal.

[0067] In some exemplary embodiments, in addition to including the first discharge part 1 and the second discharge part 2, the charging module 100 may further include a bracket 4. Both the first discharge part 1 and the second discharge part 2 are mounted on the bracket 4, and the first discharge end 11 of the first discharge part 1 is arranged to face the incoming air side, and the second discharge end 21 of the second discharge part 2 is arranged to face the outgoing air side ( Figure 1 the direction indicated by the arrow in the figure is the wind direction). It should be understood that the first discharge end 11 of the first discharge part 1 facing the incoming air side means that the first discharge end 11 of the first discharge part 1 faces the upstream incoming air side, rather than the first discharge end 11 of the first discharge part 1 pointing to the air inlet port of the duct; the second discharge end 21 of the second discharge part 2 facing the outgoing air side means that the second discharge end 21 of the second discharge part 2 faces the downstream outgoing air side (or air outlet side), rather than the second discharge end 21 of the second discharge part 2 pointing to the air outlet port of the duct.

[0068] When the air treatment device is in the air purification mode for air purification, the charging module 100 can be powered on, so that the first discharge part 1 can discharge, and particulate matters such as PM2.5, bacteria, dust, and pollen in the air in the air duct can be charged, making bacteria and the like inactivated, facilitating the adsorption of particulate matters in the air onto the electrostatic dust collection module in the air duct, so as to achieve the effect of purifying the air.

[0069] However, when the first discharge part 1 works and discharges, an ionic wind will be generated. The ionic wind will cause an increase in the resistance in the air duct, a decrease in the static pressure, and the ionic wind will cancel out part of the incoming air in the air duct, resulting in a reduction in the incoming air volume. In order to prevent the loss of incoming air, a second discharge part 2 is added. The ionic wind generated when the second discharge part 2 and the first discharge part 1 work can cancel each other out, so as not to affect the overall static pressure and incoming air volume of the air duct. In addition, the second discharge part 2 can also discharge to charge particulate matters such as PM2.5, bacteria, dust, and pollen in the air, improving the air purification effect.

[0070] The charging module 100 of the embodiment of the present application performs a two-way charging effect through the first discharge part 1 and the second discharge part 2. Therefore, compared with the charging module with a single discharge part, the high-voltage static electricity supplied to the charging module 100 of the embodiment of the present application can be reduced by 40%, that is, it can achieve the same charging and air purification effects as the charging module 100 with a single discharge part (for example: under the condition that the voltage supplied to the first discharge part 1 is -6 kV, the charging module 100 of the embodiment of the present application can achieve the effect of the charging module with a single discharge part at -10.5 kV); and in the state where the voltage of the first discharge part 1 of the charging module 100 of the embodiment of the present application is the same as that of the charging module with a single discharge part, the primary filtration efficiency of the charging module 100 of the embodiment of the present application is increased by more than 20% compared with the charging module with a single discharge part.

[0071] Since the voltage used by the charging module 100 of the embodiment of the present application is relatively low, the charging influence of the high voltage of the charging module 100 on other electrical components of the whole air treatment device can be reduced; and since the voltage used by the charging module 100 of the embodiment of the present application is reduced, the generation amount of ozone can be reduced, and the generation amount of ozone can be reduced by more than 30%, reducing the generation of intermediate by-products.

[0072] In some exemplary embodiments, as Figures 1 - 5 shown, the charging module 100 further includes a grounding ring 3. Both the first discharge part 1 and the second discharge part 2 are arranged inside the grounding ring 3 and extend along the axial direction of the grounding ring 3.

[0073] The charged module 100 further includes a grounding ring 3. The grounding ring 3 is annular, and its voltage can be regarded as zero. Both the first discharge part 1 and the second discharge part 2 are arranged inside the grounding ring 3 and extend along the axial direction of the grounding ring 3. In this way, after a high voltage is applied to the first discharge part 1 and the second discharge part 2, the first discharge part 1 and the second discharge part 2 can discharge, so that the particulate matters in the air passing through the grounding ring 3 are charged, facilitating the subsequent electrostatic dust collection module to adsorb the charged particulate matters.

[0074] In some exemplary embodiments, such as Figures 1 - 5 shown, the grounding ring 3 is circular-ring-shaped, the first discharge part 1 and the second discharge part 2 are arranged at the center of the grounding ring 3, and the first discharge part 1 and the second discharge part 2 are symmetrically arranged.

[0075] The grounding ring 3 is circular-ring-shaped, the first discharge part 1 and the second discharge part 2 are arranged at the center of the grounding ring 3, and both the first discharge part 1 and the second discharge part 2 extend along the axial direction of the grounding ring 3 and are symmetrically arranged. With such an arrangement, the distances from the first discharge part 1 to the inner peripheral surface of the grounding ring 3 are equal, and the distances from the second discharge part 2 to the inner peripheral surface of the grounding ring 3 are equal, which is beneficial to realizing uniform discharge of the first discharge part 1 and the second discharge part 2 to the surroundings, so that the particulate matters in the air passing through the grounding ring 3 are charged, facilitating the subsequent adsorption of the charged particulate matters.

[0076] In some exemplary embodiments, the bracket 4 is an insulating bracket and is fixed to the grounding ring 3.

[0077] The bracket 4 can be an insulating bracket and can be fixed to the grounding ring 3 so that the first discharge part 1 and the second discharge part 2 mounted on the insulating bracket are fixed inside the grounding ring 3.

[0078] Of course, the bracket 4 may not be fixed to the grounding ring 3, but fixed to other components.

[0079] In some exemplary embodiments, such as Figure 4 and Figure 5 shown, the bracket 4 includes a first bracket 41 and a second bracket 42. Both the first bracket 41 and the second bracket 42 are fixed to the grounding ring 3. The first discharge part 1 is mounted on the first bracket 41, and the second discharge part 2 is mounted on the second bracket 42.

[0080] The bracket 4 can be a split structure. It can include a first bracket 41 and a second bracket 42. Both the first bracket 41 and the second bracket 42 are insulating brackets, and both of them can be fixed to the grounding ring 3. The first discharge part 1 and the second discharge part 2 can be respectively mounted on the first bracket 41 and the second bracket 42, so as to support and fix the first discharge part 1 and the second discharge part 2 respectively through the first bracket 41 and the second bracket 42.

[0081] Of course, in addition to being a split structure including the first bracket 41 and the second bracket 42, the bracket 4 can also be an integral structure, that is, the bracket 4 is an integral part, and both the first discharge part 1 and the second discharge part 2 are mounted on the integral bracket 4.

[0082] In some exemplary embodiments, the air treatment device further includes a power supply module configured to supply power to the first discharge part 1 and the second discharge part 2 of the charge module 100, and the voltage of the first discharge part 1 is set to be not lower than the voltage of the second discharge part 2.

[0083] The power supply module can be a high-voltage package and can supply power to the first discharge part 1 and the second discharge part 2. Since when air purification is performed (i.e., the air treatment device is in the air purification mode), the main purpose of the operation of the first discharge part 1 is to charge the particulate matter in the air to ensure the air purification effect, and the setting of the second discharge part 2 is mainly to eliminate the influence of the ion wind generated by the first discharge part 1 on the wind pressure and air volume, and if the voltage of the second discharge part 2 is too high, arcing or glow discharge will occur, resulting in an increase in the amount of ozone generated. Therefore, the voltage of the first discharge part 1 is set to be not lower than (higher than or equal to) the voltage of the second discharge part 2.

[0084] In some exemplary embodiments, when air purification is performed, the voltage of the first discharge part 1 can be 1 to 2 times the voltage of the second discharge part 2. For example, the voltage of the first discharge part 1 can be 1.1 times, 1.2 times, 1.3 times, 1.4 times, 1.5 times, 1.6 times, 1.7 times, 1.8 times, 1.9 times or 2 times the voltage of the second discharge part 2, etc.

[0085] The voltage of the first discharge part 1 being 1 to 2 times the voltage of the second discharge part 2 not only ensures the charging and purification effect of the particulate matter in the air, but also enables the wind pressure and air volume to meet the requirements, and no arcing or glow discharge and other phenomena will occur at the second discharge part 2.

[0086] Of course, according to actual needs, the relationship between the voltages of the first discharge part 1 and the second discharge part 2 can also be adjusted. For example, the voltage of the first discharge part 1 is greater than 2 times the voltage of the second discharge part 2.

[0087] In some exemplary embodiments, when air purification is performed, the voltage range of the first discharge part 1 and the second discharge part 2 is -3 kV to 12.5 kV.

[0088] The voltage range of the first discharge part 1 and the second discharge part 2 is -3 kV to 12.5 kV. For example, the voltage of the first discharge part 1 can be -6 kV, and the voltage of the second discharge part 2 can be -3 kV. At this time, the voltage of the first discharge part 1 is 2 times the voltage of the second discharge part 2.

[0089] Of course, the voltage ranges of the first discharge part 1 and the second discharge part 2 are not limited to -3 kV to 12.5 kV as described above, and can also be adjusted according to actual needs.

[0090] In some exemplary embodiments, in addition to powering the charging module 100 in the air duct self-cleaning mode and the air purification mode, the power supply module can also power the electrostatic precipitator module in the air duct self-cleaning mode and the air purification mode.

[0091] In some exemplary embodiments, such as Figure 1 , Figures 3 - 4 As shown, the first discharge part 1 and the second discharge part 2 are conical, the tip of the cone forms the first discharge end 11 of the first discharge part 1 and the second discharge end 21 of the second discharge part 2, and the other end of the cone opposite to the tip is mounted to the bracket 2.

[0092] The first discharge part 1 and the second discharge part 2 can be conical (such as: conical), the tip of the cone can form the first discharge end 11 of the first discharge part 1 and the second discharge end 21 of the second discharge part 2, and can be respectively oriented towards the incoming air side and the outgoing air side of the air duct; the thicker other end of the cone opposite to the tip can be mounted to the bracket 4. The charging module 100 with double discharge parts can be a double-end needle tip plasma charging module.

[0093] Of course, in addition to being conical, the first discharge part 1 and the second discharge part 2 can also be in other shapes, such as: the first discharge part 1 and the second discharge part 2 can be filamentous electrode wires.

[0094] In some exemplary embodiments, the charging module 100 is a plasma generator, a negative ion generator, a positive and negative ion generator, or a dielectric barrier plasma generator.

[0095] The specific structure of the charging module 100 with double discharge parts can be various, such as: plasma generator, negative ion generator, positive and negative ion generator, dielectric barrier plasma generator, etc.; the charging forms of the charging module 100 can include needle-plate plasma, needle-cylinder plasma, carbon brush + cylinder plasma, etc.

[0096] In some exemplary embodiments, such as Figures 1 - 5 As shown, the charging module 100 mainly consists of the first discharge part 1 and its first bracket 41, the second discharge part 2 and its second bracket 42, the grounding ring 3, etc. The first discharge end 11 of the first discharge part 1 points to the incoming air side, and the second discharge end 21 of the second discharge part 2 points to the outgoing air side; the first bracket 41 and the second bracket 42 can be combined, that is, the first bracket 41 and the second bracket 42 can be an integral structure, or the first bracket 41 and the second bracket 42 can also be two independent components.

[0097] The first discharge part 1 and the second discharge part 2 can be independently powered (for example: the power supply module can include two power sources, respectively powering the first discharge part 1 and the second discharge part 2) or share a power source (for example: the power supply module can only include one power source, which can be used to power the first discharge part 1 and can also be used to power the second discharge part 2). Preferably, the first discharge part 1 and the second discharge part 2 are independently powered.

[0098] The first discharge part 1 and the second discharge part 2 can be needles made of tungsten needles, stainless steel needles and other metal materials, preferably tungsten needles. The grounding ring 3 can be made of stainless steel or other metal materials.

[0099] In some exemplary embodiments, the air treatment device can be an air conditioner. Such as Figure 6 and Figure 7 As shown, the housing 500 of the indoor unit of the air conditioner can include an air duct 505, and the air inlet of the air duct 505 can include a fresh air inlet 501 and a return air inlet 502. A movable baffle (such as a rotatable baffle) 504 is provided in the housing 500. When the baffle 504 moves, it can connect the fresh air inlet 501 with the main body of the air duct 505, or connect the return air inlet 502 with the main body of the air duct 505. The fresh air inlet 501 can be connected to the outside through a fresh air duct. Outdoor fresh air can enter the air duct 505 from the fresh air inlet 501 through the fresh air duct, and after being purified by the charging module 100 and the electrostatic dust collection module 700, it is discharged into the room from the air outlet 503 of the air duct 505; the return air inlet 502 can be connected to the room, and indoor air can enter the air duct 505 from the return air inlet 502, and after being purified by the charging module 100 and the electrostatic dust collection module 700, it is discharged into the room from the air outlet 503.

[0100] Of course, the air treatment device can also be other products capable of treating air, such as: air purifiers, air humidifiers, etc.

[0101] In summary, the air treatment device of the embodiment of the present application includes an air duct 505, and a charging module 100, a fan 600, an electrostatic dust collection module 700, an air conditioner net (which can be arranged between the charging module and the electrostatic dust collection module for pre-filtering), etc. provided in the air duct 505. The air duct 505 has an air inlet (including a fresh air inlet 501 and a return air inlet 502) and an air outlet 503 with a wind valve.

[0102] When the fresh air self-cleaning mode is turned on, the air valve at the air outlet 503 is closed, the fresh air inlet 501 is opened, and the return air inlet 502 is closed. The control device inputs high-voltage direct current of -2 kV to -25 kV, preferably -8.5 kV, to the first discharge part 1 and the second discharge part 2 of the charged module 100. The ion wind generated by the first discharge part 1 and the second discharge part 2 carries a large number of active purification factors to perform germicidal self-cleaning on the inner wall surface of the air duct 505, the impeller 600 and its volute, the electrostatic dust collection module 700, the inner surface of the fresh air duct, etc.

[0103] The air treatment device according to the embodiment of the present application combines the charged module 100, the electrostatic dust collection module 700, and the control device to efficiently filter dust in outdoor fresh air or indoor return air without consumables, and at the same time, the air duct 505 can be self-cleaned by ion wind.

[0104] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0105] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0106] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0107] In the present invention, unless otherwise clearly specified or limited, a first feature being "on" or "under" a second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact via an intermediate medium. Moreover, a first feature being "above", "over" and "on top of" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. A first feature being "under", "below" and "beneath" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0108] In the description of this specification, the description of reference terms such as "an embodiment", "some embodiments", "exemplifications", "specific exemplifications", or "some exemplifications", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or exemplification are included in at least one embodiment or exemplification of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or exemplification. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or exemplifications in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or exemplifications described in this specification and the features of different embodiments or exemplifications.

[0109] Those of ordinary skill in the art will understand that all or some of the steps in the methods disclosed above, and the functional modules / units in systems and devices, can be implemented as software, firmware, hardware, and their appropriate combinations. In the hardware implementation, the division between the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, one physical component can have multiple functions, or one function or step can be executed by several physical components in cooperation. Some or all components can be implemented as software executed by a processor, such as a digital signal processor or a microprocessor, or implemented as hardware, or implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, as is well known to those of ordinary skill in the art, a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0110] In addition, when describing representative embodiments, the specification may have presented the method and / or process as a particular sequence of steps. However, to the extent that the method or process does not depend on the particular order of the steps described herein, the method or process should not be limited to the particular order of steps described. As will be understood by those of ordinary skill in the art, other step sequences are possible. Therefore, the particular order of steps set forth in the specification should not be construed as a limitation on the claims. In addition, the claims directed to the method and / or process should not be limited to the steps being executed in the order written, as those skilled in the art can readily understand that these orders can vary and still remain within the spirit and scope of the embodiments of the present application.

[0111] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for an air treatment device, characterized in that, A charging module and a fan are provided in the air duct of the air handling device. The discharge end of the first discharge part of the charging module faces the incoming air side, and the discharge end of the second discharge part of the charging module faces the outgoing air side; The air handling device has an air duct self-cleaning mode, and the control method includes: Based on the activation of the air duct self-cleaning mode, close the air outlet of the air duct and stop the fan; Provide a first preset electrical signal to the first discharge part and a second preset electrical signal to the second discharge part to generate a bidirectional ion wind carrying active purification factors to self-clean the air duct.

2. The control method according to claim 1, characterized in that Both the first preset electrical signal and the second preset electrical signal are DC electrical signals with a constant voltage value, and the voltage value of the first preset electrical signal is not less than the voltage value of the second preset electrical signal.

3. The control method according to claim 1, wherein The first preset electrical signal is a DC electrical signal with a voltage value in the range of -2 kV to -25 kV; and / or The second preset electrical signal is a DC electrical signal with a voltage value in the range of -2 kV to -25 kV.

4. The control method according to claim 1, characterized in that An electrostatic dust collection module is also provided in the air duct downstream of the charging module; The control method further includes: Based on the activation of the air duct self-cleaning mode, provide a third preset electrical signal to the electrostatic dust collection module.

5. The control method according to claim 4, wherein The third preset electrical signal is a pulse electrical signal.

6. The control method according to claim 4, wherein The air handling device also has an air purification mode; the control method further includes: Based on the activation of the air purification mode, open the air inlet and air outlet of the air duct and start the fan; Provide a fourth preset electrical signal to the first discharge part, a fifth preset electrical signal to the second discharge part, and a sixth preset electrical signal to the electrostatic dust collection module.

7. The control method according to claim 6, wherein The fourth preset electrical signal, the fifth preset electrical signal, and the sixth preset electrical signal are all DC electrical signals with a constant voltage value, and the voltage value of the fourth preset electrical signal is not lower than the voltage value of the fifth preset electrical signal.

8. The control method according to any one of claims 1 to 7, characterized in that It further includes: Judge whether the air handling device reaches a preset air duct self-cleaning condition; and Based on the air handling device reaching the air duct self-cleaning condition, control the air handling device to activate the air duct self-cleaning mode.

9. The control method according to claim 8, wherein The air handling device also has an air purification mode, and the air duct self-cleaning condition includes that the total duration of the air handling device in the air purification mode reaches a first preset duration.

10. The control method according to any one of claims 1 to 7, characterized in that, It further includes: Based on the air handling device reaching a preset condition for exiting the air duct self-cleaning mode, control the air handling device to exit the air duct self-cleaning mode.

11. The control method according to claim 10, characterized in that, The condition for exiting the air duct self-cleaning mode includes that the duration of the air duct self-cleaning mode reaches a second preset duration.

12. A control device, characterized in that, It includes a processor and a memory storing a computer program. When the processor executes the computer program, it implements the steps of the control method according to any one of claims 1 to 11.

13. An air treatment device, characterized in that, It includes an air duct, a fan, a charging module, and the control device according to claim 12. The fan and the charging module are arranged in the air duct. The charging module includes a first discharge part and a second discharge part. The discharge end of the first discharge part faces the incoming air side, and the discharge end of the second discharge part faces the outgoing air side; Both the blower and the charging module are electrically connected to the control device, and the control device is configured to control the operations of the blower and the charging module.

14. The air treatment device according to claim 13, wherein Further included is: an electrostatic dust collection module, which is disposed in the air duct and located downstream of the charging module; the electrostatic dust collection module is electrically connected to the control device, and the control device is configured to control the operation of the electrostatic dust collection module.

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