Air treatment equipment and air purification device

Abstract

The invention discloses air treatment equipment and an air purification device, and the air purification device comprises a shell provided with an air flow channel; the charge module is arranged in the air flow channel and comprises a first electrode and a plurality of second electrodes which are arranged at intervals with the first electrode; the electrostatic dust collection module is arranged in the air flow channel and used for generating an electrostatic field to adsorb charged particles; and the charging module is configured to enable the multiple second electrodes to generate plasmas with the first electrode in turn so as to enable particulate matters in the air to be charged, and the electrostatic dust collection module is configured to apply an electrostatic field so as to adsorb the charged particulate matters. Particle pollutants adsorbed on the electrostatic dust collection module can be washed by water, and the washed electrostatic dust collection module can be reused. Meanwhile, the air purification device has small resistance to air and is suitable for scenes with large air volume and high dust concentration.

Description

Technical Field

[0001] This document relates to air purification technology, particularly to an air treatment device and an air purification 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] Currently, the fresh air filtration technology mainly adopts HEPA (High efficiency particulate air Filter) filtration technology and fiberglass filters. Among them, HEPA filters are generally used for civilian use, and fiberglass filters are generally used in industrial dust-free workshops.

[0004] However, the HEPA fresh air filtration technology has the following deficiencies:

[0005] 1) Replacement of consumables: After long-term use of the HEPA filter, the mesh holes will be blocked due to the accumulation of surface dust. If not replaced for a long time, bacteria will breed on the material surface, and the air blown out will also produce an odor. Moreover, the HEPA filter is not washable and regenerable, so the HEPA filter needs to be replaced regularly. Due to the limited space of the wall-mounted unit (indoor unit) of the air conditioner, the fresh air filtration HEPA mesh is often small in size and low in dust capacity, so the replacement cycle of the fresh air HEPA of the wall-mounted unit is shorter.

[0006] 2) High resistance and small air volume: Since the HEPA mesh is made of melt-blown fibers with small fiber gaps and large air resistance, when using the HEPA mesh for filtration, the air resistance suddenly increases and the fresh air volume suddenly decreases, seriously affecting the user experience. Summary of the Invention

[0007] This application proposes an air purification device, which includes:

[0008] A housing provided with an air flow channel;

[0009] A charging module arranged in the air flow channel, including: a first electrode and a plurality of second electrodes spaced apart from the first electrode;

[0010] An electrostatic dust collection module arranged in the air flow channel, including generating an electrostatic field to adsorb charged particles; and

[0011] Among them, the charging module is configured such that a plurality of the second electrodes alternately generate plasma with the first electrode to charge the particulate matter in the air, and the electrostatic dust collection module is configured to apply an electrostatic field to adsorb the charged particulate matter.

[0012] In a schematic embodiment, the plurality of the second electrodes include a first sub-electrode and a second sub-electrode;

[0013] The first electrode is connected to a reference ground, and the first sub-electrode and the second sub-electrode are configured to alternately apply voltage pulses to alternately generate plasma with the first electrode.

[0014] In a schematic embodiment, the first sub-electrode is configured to apply a first pulse voltage signal, and the second sub-electrode is configured to apply a second pulse voltage signal;

[0015] Wherein, the peak of the first pulse signal overlaps with the trough of the second pulse signal in time.

[0016] In a schematic embodiment, the voltage amplitude of the first pulse signal is 4 - 6 kV, the pulse width of the first pulse signal is 0.1 - 0.2 ms, and the frequency of the first pulse signal is 200 - 300 Hz; and / or,

[0017] The voltage amplitude of the second pulse signal is 4 - 6 kV, the pulse width of the second pulse signal is 0.1 - 0.2 ms, and the frequency of the second pulse signal is 200 - 300 Hz.

[0018] In a schematic embodiment, the waveform of the first pulse voltage signal and / or the second pulse signal is a half-sine wave, a sharp pulse wave, a sawtooth wave, a Gaussian pulse wave, a triangular wave, a trapezoidal wave, a bell-shaped wave, a stepped wave or a rectangular wave.

[0019] In a schematic embodiment, the waveform of the first pulse voltage signal is a sharp pulse wave;

[0020] The waveform of the second pulse voltage signal is a rectangular wave.

[0021] In a schematic embodiment, the first electrode is configured as a cylindrical shape, and the outer peripheral wall of the first electrode abuts against the inner peripheral wall of the air flow channel;

[0022] Both the first sub-electrode and the second sub-electrode are disposed inside the first electrode.

[0023] In a schematic embodiment, the first sub-electrode is provided with a first discharge tip, and the second sub-electrode is provided with a second discharge tip;

[0024] The orientations of the first discharge tip and the second discharge tip are different.

[0025] In a schematic embodiment, the first sub - electrode is configured as a straight bar - shaped structure coaxial with the first electrode, and the first discharge tip is disposed at one end of the first sub - electrode.

[0026] In a schematic embodiment, there are two first sub - electrodes, and the first discharge tips of the two first sub - electrodes face away from each other.

[0027] In a schematic embodiment, the second sub - electrode is configured as a straight bar - shaped structure extending radially along the first electrode;

[0028] There are multiple second sub - electrodes, and the multiple second sub - electrodes are distributed in a spoke - like manner. The second discharge tip is disposed at one end of the second sub - electrode close to the first electrode;

[0029] One end of the first sub - electrode facing away from the first discharge tip and one end of the second sub - electrode facing away from the second discharge tip are close to each other.

[0030] In a schematic embodiment, the charging module further includes an insulating bracket that connects the first electrode and the second electrode; and / or,

[0031] The air purification device further includes a fan, and the fan is arranged to drive the air in the air flow channel to flow through the charging module and the electrostatic dust collection module in sequence.

[0032] This application also proposes an air treatment device, which includes the air purification device as described above.

[0033] In this way, when air flows through the charging module, the particulate matter in the air adsorbs the charged particles generated by the charging module and becomes charged. When the air passes through the electrostatic dust collection module, the charged particulate matter is adsorbed by the electrostatic dust collection module that generates an electrostatic field and collected together, so that the particulate matter in the air can be removed, achieving the effect of purifying the air. At the same time, the charged particles and other active substances generated by the charging module can also play a role in sterilization. In this way, the air can be effectively purified after flowing through the air flow channel. The particulate pollutants adsorbed on the electrostatic dust collection module can be washed with water, and the washed electrostatic dust collection module can be reused. At the same time, this air purification device has a small resistance to air and is suitable for scenarios with large air volume and high dust concentration.

[0034] Moreover, when the charged module is operating, a variety of second electrodes alternately ionize the air with the first electrode to generate plasma. The number of charged particles generated by the variety of second electrodes alternately ionizing the air with the first electrode is much larger than the number of charged particles generated by continuously ionizing the air by only applying a constant DC voltage between the first electrode and the second electrode. The more the number of charged particles, the easier it is for particulate matter to be charged and the higher the sterilization rate will be. Thus, the dust removal and sterilization efficiency of the air purification device can be further improved. In this way, the voltage value applied between the first electrode and the second electrode of the charged module can be correspondingly reduced, thereby reducing the ozone concentration generated by ionizing the air and enhancing the user experience.

[0035] Other features and advantages of the present application will be set forth in the following description. Moreover, some of them will be obvious from the description, or may be learned by practicing the present application. Other advantages of the present application can be realized and obtained by the solutions described in the description and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are used to provide an understanding of the technical solutions of the present application and constitute a part of the description. They are used together with the embodiments of the present application to explain the technical solutions of the present application and do not constitute a limitation to the technical solutions of the present application.

[0037] Figure 1 is a front view schematic diagram of an air purification device according to an embodiment of the present application;

[0038] Figure 2 is a three-dimensional schematic diagram of an air purification device according to an embodiment of the present application;

[0039] Figure 3 is a full-section schematic diagram of an air purification device according to an embodiment of the present application;

[0040] Figure 4 is a simplified schematic diagram of an air purification device according to an embodiment of the present application;

[0041] Figure 5 is a schematic diagram of the first charged module according to an embodiment of the present application;

[0042] Figure 6 is a three-dimensional schematic diagram of the first charged module according to an embodiment of the present application;

[0043] Figure 7 is a waveform schematic diagram of the pulse voltage signal according to an embodiment of the present application;

[0044] Figure 8 is a waveform schematic diagram of the first pulse voltage signal and the second pulse voltage signal according to an embodiment of the present application;

[0045] Figure 9 is a front view schematic diagram of the second charged module according to an embodiment of the present application;

[0046] Figure 10 Left view schematic diagram of the second charged module of the embodiment of the present application;

[0047] Figure 11 Left view schematic diagram of the third charged module of the embodiment of the present application;

[0048] Figure 12 Left view schematic diagram of the fourth charged module of the embodiment of the present application;

[0049] Figure 13 Left view schematic diagram of the fifth charged module of the embodiment of the present application;

[0050] Figure 14 Front view schematic diagram of an electrostatic dust collection module of the embodiment of the present application;

[0051] Figure 15 Rear view schematic diagram of an electrostatic dust collection module of the embodiment of the present application.

[0052] Reference numerals:

[0053] 100, air purification device; 1, charged module; 111, second electrode; 1111, first sub-electrode; 1112, second sub-electrode; 1113, first discharge tip; 1114, second discharge tip; 112, first electrode; 113, insulating bracket; 2, electrostatic dust collection module; 21, anode; 211, first conductive strip; 212, first conductive column; 22, cathode; 221, first conductive strip; 222, second conductive column; 23, insulating frame; 3, housing; 31, air flow channel; 32, air inlet; 33, air outlet; 4, fan. Detailed implementation manners

[0054] This embodiment provides an air treatment device that can intake and exhaust air, and its air treatment function is not limited. For example, it can perform at least one of the functions of air temperature adjustment, humidification, purification, circulation, etc. The air treatment device includes, but is not limited to, air conditioners. The air treatment device can also be a purifier, a humidifier, a fan, etc. After the specific type of the air treatment device is determined, those skilled in the art can know the composition of the air treatment device for realizing the air treatment function, which will not be elaborated here.

[0055] The air treatment device includes a housing, a supply air fan, and an air purification device. The housing is provided with an air inlet, an air outlet, and an air duct. The two ends of the air duct are respectively connected to the air inlet and the air outlet. The supply air fan is arranged in the air duct. The supply air fan can be a cross-flow fan or a centrifugal fan. After the supply air fan is started, it can drive the air in the air duct to move from the air inlet to the air outlet, so that the air inlet sucks the air in the surrounding environment into the air duct, and the air flows through the air duct and then is discharged from the air outlet into the surrounding environment. The air outlet can be openable and closable. For example, a damper or a wind deflector that can move to open or close the air outlet can be arranged at the air outlet. The air purification device is arranged on the housing.

[0056] As Figures 1 to 3 shown, Figures 1 to 3 it shows the structure of an air purification device 100 in this embodiment. The air purification device 100 includes a housing 3, a charging module 1, an electrostatic dust collection module 2, and a fan 4.

[0057] The housing 3 can be made of an insulating material, such as plastic. The housing 3 is provided with an air flow channel 31, an air inlet 32, and an air outlet 33. The air inlet 32 and the air outlet 33 are respectively arranged at opposite ends of the air flow channel 31. The air inlet 32 can input the air to be purified into the air flow channel 31. The air inlet 32 can be connected to the outside. The air to be purified is input from the air inlet 32, flows through the air flow channel 31, and then is output from the air outlet 33. The air outlet 33 of the housing 3 can be connected to the air inlet, the air outlet, or the air duct of the air treatment device. The air outlet 33 of the housing 3 can also be arranged outside the housing of the air treatment device.

[0058] As Figure 4 shown, the charging module 1 is arranged in the air flow channel 31. The charging module 1 can be arranged close to the air inlet 32. The charging module 1 can ionize the air to generate plasma. As Figure 5 , 6 shown, the charging module 1 includes a first electrode 112 and a second electrode. Both the first electrode 112 and the second electrode 111 are conductors. The first electrode 112 and the second electrode 111 can be made of metal or carbon fiber, such as copper, aluminum, iron, and their alloys. The manufacturing materials of the first electrode 112 and the second electrode 111 can be the same or different. The shapes of the first electrode 112 and the second electrode 111 are not limited, and can be cylindrical, annular, strip-shaped, sheet-shaped, block-shaped, or plate-shaped. The shapes of the first electrode 112 and the second electrode 111 can be the same or different. There are multiple second electrodes 111, and the number of types of the second electrodes 111 can be two, three, or four. The shapes and structures between different types of second electrodes 111 can be the same or different. Each second electrode 111 is arranged at an interval with the first electrode 112. There is an interval between each second electrode 111.

[0059] Applying a voltage between any second electrode 111 and the first electrode 112 can generate an electric field between the first electrode 112 and the second electrode 111. This electric field can ionize the air to generate plasma between the first electrode 112 and the second electrode 111. When the electric field ionizes the air, charged particles such as positive ions and negative ions are generated in the air. These charged particles can diffuse onto the particulate matter in the air and be adsorbed by the particulate matter, causing the particulate matter to carry static charges. The particulate matter in the air includes fine particulate matter, bacteria, pollen, floating dust, etc. Fine particulate matter refers to particulate matter with an aerodynamic equivalent diameter less than or equal to 2.5 micrometers in the air. The particulate matter can carry a positive charge by adsorbing positive ions, or it can carry a negative charge by adsorbing negative ions. Microorganisms such as bacteria can be killed by the charged particles.

[0060] The charging module 1 is configured to alternately apply a voltage between a plurality of second electrodes 111 and the first electrode 112, so that the plurality of second electrodes 111 alternately ionize the air with the first electrode 112 to generate plasma, thereby generating a large number of charged particles to charge the particulate matter in the air.

[0061] The electrostatic dust collection module 2 is arranged in the air flow channel 31, and the electrostatic dust collection module 2 is located downstream of the charging module 1. The electrostatic dust collection module 2 is closer to the air outlet 33 than the charging module 1. The electrostatic dust collection module 2 is provided with voids or meshes for the air flow to pass through. The electrostatic dust collection module 2 can apply an electrostatic field, and the charged particulate matter is adsorbed by the electrostatic dust collection module 2 under the action of the electrostatic field. The electrostatic dust collection module 2 includes an anode 21 and a cathode 22. A gap is provided between the anode 21 and the cathode 22, and air passes through the gap.

[0062] When a constant DC voltage is applied between the anode 21 and the cathode 22, an electrostatic field is generated between the anode 21 and the cathode 22. When the charged particulate matter in the air passes through the gap between the anode 21 and the cathode 22, the particulate matter carrying a positive charge moves towards the cathode 22 under the action of the electrostatic field and is adsorbed onto the cathode 22, and the particulate matter carrying a negative charge moves towards the anode 21 under the action of the electrostatic field and is adsorbed onto the anode 21. The electrostatic dust collection module 2 can be an electrostatic dust collection net.

[0063] The fan 4 can be arranged in the air flow channel 31 of the housing 3. The fan 4 can also be arranged outside the housing 3, and the fan 4 is connected to the air inlet 32 or the air outlet 33 of the housing 3. When the fan 4 operates, it can drive the air in the air flow channel 31 to flow through the charging module 1 and the electrostatic dust collection module 2 in sequence. At this time, the air inlet 32 inhales air, and the air outlet 33 discharges air.

[0064] In this embodiment, the fan 4 is disposed within the air flow channel 31 and downstream of the electrostatic dust collection module 2. When the fan 4 operates, a negative pressure is generated at the air inlet 32 to suck in the air to be purified. The air to be purified is purified after flowing through the charging module 1 and the electrostatic dust collection module 2, and the purified air is discharged from the air outlet 33. The fan 4 is disposed downstream of the electrostatic dust collection module 2, which can also prevent dust from accumulating on the fan 4.

[0065] In this way, the fan 4 drives the air within the air flow channel 31 to sequentially flow through the charging module 1 and the electrostatic dust collection module 2. When the air flows through the charging module 1, the particulate matters in the air adsorb the charged particles generated by the charging module 1 and become charged. When the air passes through the electrostatic dust collection module 2, the charged particulate matters are adsorbed by the electrostatic dust collection module 2 generating an electrostatic field and collected together, thereby removing the particulate matters in the air and achieving the effect of purifying the air. At the same time, the charged particles and other active substances generated by the charging module 1 can also play a role in sterilization. In this way, the air input into the room from the air outlet 33 can be effectively purified. The particulate pollutants adsorbed on the electrostatic dust collection module 2 can be washed with water, and the washed electrostatic dust collection module 2 can be reused. At the same time, this air purification device has a small resistance to air and is suitable for scenarios with large air volumes and high dust concentrations.

[0066] Also, since multiple second electrodes 111 alternately ionize the air with the first electrode 112 to generate plasma when the charging module 1 operates, the number of charged particles generated by multiple second electrodes 111 alternately ionizing the air with the first electrode 112 is much larger than the number of charged particles generated by continuously ionizing the air by only applying a constant DC voltage between the first electrode 112 and the second electrode. The more the number of charged particles, the easier it is for the particulate matters to be charged and the higher the sterilization rate, thereby further improving the dust removal and sterilization efficiency of the air purification device. In this way, the voltage value applied between the first electrode 112 and the second electrode 111 of the charging module 1 can be correspondingly reduced, thereby reducing the ozone concentration generated by ionizing the air and enhancing the user experience.

[0067] This embodiment also presents a set of comparative verification tests:

[0068] 1. Use the air purification device in the embodiment of the present application to filter the air, and alternately apply a voltage with a peak value of -5 kV between multiple second electrodes 111 and the first electrode 112. The primary filtration efficiency of the air purification device is 95%, and the increase in ozone concentration is -5 PPB;

[0069] 2. Use the air purification device in the related art to filter the air, and apply a constant DC voltage of -5 kV between the second electrode and the first electrode. The primary filtration efficiency of the air purification device is 45%, and the increase in ozone concentration is -5 PPB;

[0070] 3. Use the air purification device in the related technology to filter the air. Apply a constant DC voltage of -8.5 kV between the second electrode and the first electrode. The primary filtration efficiency of the air purification device is 65%, and the ozone concentration increase is +2 PPB;

[0071] 4. Use the air purification device in the related technology to filter the air. Apply a constant DC voltage of -10.5 kV between the second electrode and the first electrode. The primary filtration efficiency of the air purification device is 85%, and the ozone concentration increase is +10 PPB;

[0072] 5. Use the air purification device in the related technology to filter the air. Apply a constant DC voltage of -12.5 kV between the second electrode and the first electrode. The primary filtration efficiency of the air purification device is 71%, and the ozone concentration increase is +25 PPB.

[0073] Among them, the ozone concentration increase is calculated based on the ozone content in the air itself (generally 10 - 20 PPB). Part of the ozone in the air itself will decompose during the air circulation process.

[0074] It can be seen that by using the air purification device in the embodiment of the present application to filter the air, the air purification device has a high primary filtration efficiency, requires a low voltage, and has a low ozone concentration.

[0075] In a schematic embodiment, as Figure 9 、 10 shown, the multiple second electrodes include a first sub - electrode 1111 and a second sub - electrode 1112. The first sub - electrode 1111 and the second sub - electrode 1112 are arranged at intervals. The first sub - electrode 1111 and the second sub - electrode 1112 can be close to each other. The structures of the first sub - electrode 1111 and the second sub - electrode 1112 can be the same or different.

[0076] The first electrode 112 is connected to the reference ground and has a potential of zero. The first sub - electrode 1111 and the second sub - electrode 1112 are configured to alternately apply voltage pulses. For example, after the first sub - electrode 1111 applies a voltage pulse, then it's the turn of the second sub - electrode 1112 to apply a voltage pulse, and then it's the turn of the first sub - electrode 1111 to apply a voltage pulse again, and so on in a cycle. The voltage pulses applied on the first sub - electrode 1111 and the second sub - electrode 1112 have the same electrical property, such as both being negative voltage pulses or positive voltage pulses, and preferably both are negative voltage pulses.

[0077] When a voltage pulse is applied to the first sub-electrode 1111, a voltage difference is generated between the first electrode 112 and the first sub-electrode 1111, and an electric field is generated between the first electrode 112 and the first sub-electrode 1111. The electric field can ionize the air so that plasma is generated between the first electrode 112 and the second electrode 111, so that the first sub-electrode 1111 can perform a pulse discharge. Correspondingly, when a voltage pulse is applied to the second sub-electrode 1112, the second sub-electrode 1112 can perform a pulse discharge.

[0078] Voltage pulses are alternately applied to the first sub-electrode 1111 and the second sub-electrode 1112, and the first sub-electrode 1111 and the second sub-electrode 1112 perform pulse discharge alternately, thereby generating a large number of charged particles, which can effectively improve the purification effect of the air purification device. At the same time, the types of the second electrode only include the first sub-electrode 1111 and the second sub-electrode 1112, and the structure of the air purification device is simpler.

[0079] In an illustrative embodiment, the air purification device further includes a power module. The power module may be a high voltage controller. The power module is provided with a first output terminal, a second output terminal, and a third output terminal. The first output terminal is electrically connected to the first electrode 112, the second output terminal is electrically connected to the first sub-electrode 1111, and the third output terminal is electrically connected to the second sub-electrode 1112. The first output terminal is grounded. The second output terminal outputs a first pulse voltage signal to the first sub-electrode 1111. The second output terminal outputs a second pulse voltage signal to the first sub-electrode 1111. Both the first pulse voltage signal and the second pulse voltage signal are pulse signals.

[0080] like Figure 8 As shown, the crest of the first pulse signal overlaps with the trough of the second pulse signal in time, and the trough of the first pulse signal overlaps with the crest of the second pulse signal in time.

[0081] In this way, since the peak of the first pulse signal and the trough of the second pulse signal overlap in time, the time interval for alternating discharge of the first sub-electrode 1111 and the second sub-electrode 1112 is very short, which is equivalent to the charging module 1 being discharged all the time. When the air flow rate is large, the particulate matter can also be fully charged and charged when passing through the charging module 1, thereby further improving the purification effect of the air purification device.

[0082] In an illustrative embodiment, Figure 7 As shown, the waveform of the first pulse voltage signal is a half-sine wave, a sharp pulse wave, a sawtooth wave, a Gaussian pulse wave, a triangle wave, a trapezoidal wave, a bell wave, a step wave, a rectangular wave or a square wave.

[0083] The waveform of the second pulse voltage signal is a half-sine wave, a sharp pulse wave, a sawtooth wave, a Gaussian pulse wave, a triangular wave, a trapezoidal wave, a bell-shaped wave, a stepped wave, a rectangular wave or a square wave.

[0084] In a schematic embodiment, as Figure 8 shown, the waveform of the first pulse voltage signal is a sharp pulse wave, and the waveform of the second pulse voltage signal is a rectangular wave.

[0085] In this way, the voltage pulse in the first pulse voltage signal is a sharp pulse voltage. After the sharp pulse voltage is applied to the first sub-electrode 1111, the ion flow ejected by the discharge of the first sub-electrode 1111 can be ejected farther, and the range covered by the ion flow is large, improving the charging probability of particulate matter in the air. At the same time, the voltage pulse in the second pulse voltage signal is a rectangular pulse voltage. After the rectangular pulse voltage is applied to the second sub-electrode 1112, the discharge time is longer than that of the first sub-electrode 1111, and it can charge the particulate matter that has not been charged during the discharge of the first sub-electrode 1111, improving the purification efficiency.

[0086] In a schematic embodiment, as Figure 9 、 10 shown, the first electrode 112 is configured as a cylindrical shape. The outer peripheral wall of the first electrode 112 abuts against the inner peripheral wall of the air flow channel 31 of the housing 3, and there is no gap between the outer peripheral wall of the first electrode 112 and the inner peripheral wall of the air flow channel 31. The air in the air flow channel 31 must flow through the internal channel of the first electrode 112. The first sub-electrode 1111 and the second sub-electrode 1112 are both disposed within the first electrode 112.

[0087] In this way, the gap between the first sub-electrode 1111 and the first electrode 112 is the discharge region, and the gap between the second sub-electrode 1112 and the first electrode 112 is also the discharge region. Also, since the air in the air flow channel 31 must flow through the internal channel of the first electrode 112, that is, it must pass through the discharge region, there is a very high probability that the particulate matter in the air will adsorb charged particles and become charged when passing through the discharge region, thereby improving the dust removal effect.

[0088] In a schematic embodiment, a first discharge tip 1113 is provided on the first sub-electrode 1111. A second discharge tip 1114 is provided on the second sub-electrode 1112. The first discharge tip 1113 and the second discharge tip 1114 can be needle-shaped, sharp-tooth-shaped or conical. The orientations of the first discharge tip 1113 of the first sub-electrode 1111 and the second discharge tip 1114 of the second sub-electrode 1112 are different.

[0089] In this way, the curvature radii of both the first discharge tip 1113 and the second discharge tip 1114 are very small, and the electric field near the first discharge tip 1113 and the second discharge tip 1114 is non-uniform, making it easier to discharge. When the first discharge tip 1113 discharges, the movement direction of the ion flow generated is the direction towards which the first discharge tip 1113 faces. When the second discharge tip 1114 discharges, the movement direction of the ion flow generated is the direction towards which the second discharge tip 1114 faces. Since the orientations of the first discharge tip 1113 and the second discharge tip 1114 are different, the movement directions of the ion flows generated by the first discharge tip 1113 and the second discharge tip 1114 are different, which can further increase the probability of charging the particulate matter in the air, thereby improving the sterilization and dust removal effects.

[0090] In a schematic embodiment, the first sub-electrode 1111 is configured as a straight bar structure. The first sub-electrode 1111 is coaxially arranged with the first electrode 112. The first discharge tip 1113 is provided at one end of the first sub-electrode 1111. One end of the first electrode 112 is for air intake, and the other end is for air outlet.

[0091] The first sub-electrode 1111 is configured as a straight bar and is coaxially arranged with the first electrode 112, which can reduce the resistance to air and increase the air flow rate.

[0092] Optionally, the first discharge tip 1113 faces the air intake end of the first electrode 112. The first discharge tip 1113 faces the wind, and the first sub-electrode 1111 has a smaller resistance to air, further increasing the air flow rate.

[0093] In a schematic embodiment, there are two first sub-electrodes 1111, and both of the two first sub-electrodes 1111 are coaxially arranged with the first electrode 112. The first discharge tips 1113 of the two first sub-electrodes 1111 face in opposite directions. The first discharge tip 1113 of one first sub-electrode 1111 faces the air intake end of the first electrode 112, and the first discharge tip 1113 of the other first sub-electrode 1111 faces the air outlet end of the first electrode 112.

[0094] When only the first discharge tip 1113 of one first sub - electrode 1111 discharges, an ion flow is generated. The ion flow will cause an increase in resistance and a decrease in static pressure within the first electrode 112. Moreover, the ion flow will impede the air flow within the first electrode 112, resulting in a reduction in air volume. To prevent air intake loss, another first sub - electrode 1111 is added. The first discharge tips 1113 of the two first sub - electrodes 1111 are respectively oriented towards one end of the first electrode 112 where air enters and the other end of the first electrode 112 where air exits. Since the two first discharge tips 1113 are respectively oriented towards the windward direction and the leeward direction, the influence of the ion flows generated by the simultaneous discharges of the two first discharge tips 1113 on the air flow can cancel each other out, thus not affecting the air volume. In addition, the discharges of the two first discharge tips 1113 can also increase the probability of particulate charging and improve the air purification effect.

[0095] In a schematic embodiment, the second sub - electrode 1112 is configured as a straight - bar structure. The second sub - electrode 1112 extends radially outward from a region close to the axis of the first electrode 112. A plurality of second sub - electrodes 1112 are provided. The plurality of second sub - electrodes 1112 are distributed in a spoke - like manner. For example, four second sub - electrodes 1112 are provided. Two second sub - electrodes 1112 respectively extend towards the left and right sides of the first electrode 112, and the other two second sub - electrodes 1112 respectively extend towards the upper and lower sides of the first electrode 112. The second discharge tip 1114 is provided at one end of the second sub - electrode 1112 close to the first electrode 112. One end of the first sub - electrode 1111 facing away from the first discharge tip 1113 and one end of the second sub - electrode 1112 facing away from the second discharge tip 1114 are close to each other.

[0096] In this way, with the plurality of second sub - electrodes 1112 distributed in a spoke - like manner, when the plurality of second sub - electrodes 1112 discharge simultaneously, they can evenly eject ion flows in all directions, effectively charging the particulate matters flowing around the second sub - electrodes 1112 and improving the purification effect.

[0097] In a schematic embodiment, as Figure 9 、 10 shown, the charging module 1 further includes an insulating bracket 113. The insulating bracket 113 is a rigid structure made of insulating material. The insulating bracket 113 is connected to the first electrode 112 and the second electrode 111. The insulating bracket 113 can be configured as a bar. One end of the insulating bracket 113 is connected to the side wall of the first electrode 112, and the other end of the insulating bracket 113 is connected to one end of the first sub - electrode 1111 facing away from the first discharge tip 1113 and one end of the second sub - electrode 1112 facing away from the second discharge tip 1114.

[0098] In some embodiments, as Figure 10As shown, the first sub-electrode 1111 and the second sub-electrode 1112 can be centrally arranged at the center position of the first electrode 112. As Figure 11 shown, the first sub-electrode 1111 and the second sub-electrode 1112 can also be arranged at one end of the first electrode 112. As Figure 12 shown, a non-penetrating notch 1120 can be provided on the first electrode 112. As Figure 13 shown, a notch 1121 that axially penetrates the first electrode 112 can be provided on the first electrode 112.

[0099] In a schematic embodiment, as Figure 14 、 15 shown, the electrostatic dust collection module 2 further includes an insulating frame 23. The insulating frame 23 is made of an insulating material, such as plastic. The insulating frame 23 can be configured as a rectangular frame structure. The outer peripheral wall of the insulating frame 23 abuts against the inner peripheral wall of the air flow channel, and a seal is provided between the outer peripheral wall of the insulating frame 23 and the inner peripheral wall of the air flow channel. Both the anode 21 and the cathode 22 are connected to the insulating frame 23, and the insulating frame 23 supports the anode 21 and the cathode 22.

[0100] The anode 21 includes a plurality of first conductive bars 211 and first conductive columns 212. The anode 21 can be made of metal or carbon fiber. The first conductive bars 211 can be configured as straight bars. The first conductive bars 211 extend from one side edge of the insulating frame 23 to the other side edge of the insulating frame 23. The extending directions of the plurality of first conductive bars 211 are parallel to each other. The first conductive columns 212 are configured as strip structures, and can be straight strip structures. The first conductive columns 212 are connected to each first conductive bar 211.

[0101] The cathode 22 includes a plurality of second conductive bars 221 and second conductive columns 222. The cathode 22 can be made of metal or carbon fiber. The second conductive bars 221 can be configured as straight bars. The second conductive bars 221 extend from one side edge of the insulating frame 23 to the other side edge of the insulating frame 23. The extending directions of the plurality of second conductive bars 221 are all parallel to the extending direction of the first conductive bars 211. The second conductive columns 222 are configured as strip structures. The second conductive columns 222 are connected to each second conductive bar 221.

[0102] The number of the first conductive bars 211 and the second conductive bars 221 can be the same, or the number of the first conductive bars 211 can be one more or one less than the number of the second conductive bars 221.

[0103] In a direction perpendicular to the extending direction of the first conductive bar 211, the first conductive bars 211 and the second conductive bars 221 are arranged alternately, and there is a gap between adjacent first conductive bars 211 and second conductive bars 221, and the width of the gap is uniform. The gap between the first conductive bar 211 and the second conductive bar 221 allows the air flow in the air flow channel 31 to pass through.

[0104] The power supply module is electrically connected to one ends of the first conductive posts 212 and the second conductive posts 222 through wires. The power supply module can apply a constant DC voltage between the first conductive bar 211 and the second conductive bar 221 to generate a strong electrostatic field in the gap between the first conductive bar 211 and the second conductive bar 221. The charged particulate matters in the air flowing through the gap can be adsorbed onto the first conductive bar 211 or the second conductive bar 221 under the action of the electrostatic field. At the same time, since a plurality of the first conductive bars 211 and the second conductive bars 221 are arranged alternately, a plurality of gaps for the air flow to pass through are formed, thereby reducing the resistance of the electrostatic dust collection module 2 to the air flow and reducing the air volume loss.

[0105] In a schematic embodiment, both the first conductive bar 211 and the second conductive bar 221 are configured as strip-shaped flat plates. The plate surfaces of the first conductive bar 211 and the second conductive bar 221 are perpendicular to the direction in which the first conductive bar 211 and the second conductive bar 221 are arranged alternately. The plate surfaces of adjacent first conductive bars 211 and second conductive bars 221 face each other.

[0106] In this way, the plate surfaces of the first conductive bar 211 and the second conductive bar 221 are parallel to each other, and the electric field is more uniformly distributed in the gap between the first conductive bar 211 and the second conductive bar 221, which can improve the filtering and dust removal effect of the electrostatic dust collection module 2. At the same time, the dust on each part of the first conductive bar 211 and the second conductive bar 221 of the electrostatic dust collection module 2 can be evenly removed in the self-cleaning mode.

[0107] In a schematic embodiment, the first conductive posts 212 and the second conductive posts 222 can extend along the opposite two side edges of the frame respectively. The first conductive post 212 is connected to one ends of a plurality of first conductive bars 211 facing the same direction. The second conductive post 222 is connected to one ends of a plurality of second conductive bars 221 facing away from the first conductive post 212. In this way, the influence of the first conductive post 212 and the second conductive post 222 on the electric field between the first conductive bar 211 and the second conductive bar 221 is relatively small.

[0108] This application describes multiple embodiments, but the description is exemplary rather than restrictive, and it will be apparent to those of ordinary skill in the art that there can be more embodiments and implementation solutions within the scope of the embodiments described in this application. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically restricted, any feature or element of any embodiment can be used in combination with any other feature or element in any other embodiment, or can replace any other feature or element in any other embodiment.

[0109] This application includes and contemplates combinations with features and elements known to those of ordinary skill in the art. The embodiments, features, and elements disclosed in this application can also be combined with any conventional features or elements to form unique inventive solutions defined by the claims. Any feature or element of any embodiment can also be combined with features or elements from other inventive solutions to form another unique inventive solution defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application can be implemented alone or in any suitable combination. Therefore, the embodiments are not limited except as defined by the appended claims and their equivalents. In addition, various modifications and changes can be made within the scope of the appended claims.

[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 sequence of steps described herein, the method or process should not be limited to the particular sequence of steps described. As will be understood by those of ordinary skill in the art, other sequences of steps are possible. Therefore, the particular sequence 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 performing their steps in the order written, and 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 this application.

Claims

1. An air purification device, characterized in that, Comprising: A housing provided with an air flow channel; A charging module disposed within the air flow channel, comprising: a first electrode and a plurality of second electrodes each spaced apart from the first electrode; An electrostatic dust collection module disposed within the air flow channel, including generating an electrostatic field to adsorb charged particles; and Wherein, the charging module is configured such that the plurality of second electrodes alternately generate plasma with the first electrode to charge particulate matter in the air, and the electrostatic dust collection module is configured to apply an electrostatic field to adsorb the charged particulate matter.

2. The air purification device according to claim 1, wherein The plurality of second electrodes include a first sub-electrode and a second sub-electrode; The first electrode is connected to a reference ground, and the first sub-electrode and the second sub-electrode are configured to alternately apply voltage pulses to alternately generate plasma with the first electrode.

3. The air purification device according to claim 2, characterized in that, The first sub-electrode is configured to apply a first pulsed voltage signal, and the first sub-electrode is configured to apply a second pulsed voltage signal; Wherein, the peak of the first pulsed signal overlaps with the trough of the second pulsed signal in time.

4. The air purification device according to claim 3, wherein The voltage amplitude of the first pulsed signal is 4 - 6 kV, the pulse width of the first pulsed signal is 0.1 - 0.2 ms, and the frequency of the first pulsed signal is 200 - 300 Hz; and / or, The voltage amplitude of the second pulsed signal is 4 - 6 kV, the pulse width of the second pulsed signal is 0.1 - 0.2 ms, and the frequency of the second pulsed signal is 200 - 300 Hz.

5. The air purification device according to claim 3, characterized in that, The waveform of the first pulsed voltage signal and / or the second pulsed signal is a half-sine wave, a sharp pulse wave, a sawtooth wave, a Gaussian pulse wave, a triangular wave, a trapezoidal wave, a bell-shaped wave, a stepped wave or a rectangular wave.

6. The air purification device according to claim 3, characterized in that, The waveform of the first pulsed voltage signal is a sharp pulse wave; The waveform of the second pulsed voltage signal is a rectangular wave.

7. The air purification device according to any one of claims 2 to 6, characterized in that The first electrode is configured as a cylindrical shape, and the outer peripheral wall of the first electrode abuts against the inner peripheral wall of the air flow channel; The first sub-electrode and the second sub-electrode are both disposed within the first electrode.

8. The air purification device according to claim 7, characterized in that The first sub-electrode is provided with a first discharge tip, and the second sub-electrode is provided with a second discharge tip; The orientations of the first discharge tip and the second discharge tip are different.

9. The air purification device according to claim 8, characterized in that, The first sub-electrode is configured as a straight bar-shaped structure coaxial with the first electrode, and the first discharge tip is disposed at one end of the first sub-electrode.

10. The air purification device according to claim 9, characterized in that, There are two first sub-electrodes, and the first discharge tips of the two first sub-electrodes face away from each other.

11. The air purification device according to claim 10, characterized in that, The second sub-electrode is configured as a straight bar-shaped structure extending along the radial direction of the first electrode; There are a plurality of second sub-electrodes, and the plurality of second sub-electrodes are distributed in a spoke-like manner, and the second discharge tip is disposed at one end of the second sub-electrode close to the first electrode; One end of the first sub-electrode facing away from the first discharge tip and one end of the second sub-electrode facing away from the second discharge tip are close to each other.

12. The air purification device according to any one of claims 1 to 6, characterized in that, The charging module further includes an insulating bracket connecting the first electrode and the second electrode; and / or, The air purification device further includes a fan configured to drive the air within the air flow channel to sequentially flow through the charging module and the electrostatic dust collection module.

13. An air treatment device, characterized in that, Comprising the air purification device according to any one of claims 1 to 12.

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