Air purification device, control method and control device of air purification device and air treatment equipment

Abstract

The invention discloses an air purification device, a control method and device of the air purification device and air treatment equipment. The air purification device comprises a dielectric barrier discharge module which comprises a tubular barrier dielectric layer, an inner electrode arranged in the barrier dielectric layer and an outer electrode arranged outside the barrier dielectric layer; and the liquid water generation module is arranged to be used for generating liquid water on the outer surface of the barrier dielectric layer, and the dielectric barrier discharge module is arranged to be capable of ionizing air and the liquid water. According to the air purification device, liquid water is added into the dielectric barrier discharge module, generation of substances such as ozone and nitric oxide harmful to the human body by the air purification device can be reduced, the number of generated hydroxyl free radicals is greatly increased, nano water ions are generated, and the sterilization and deodorization effects are greatly enhanced.

Description

Technical Field

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

[0002] At present, a single barrel-type dielectric barrier discharge module (DBD module) is often used for sterilization and deodorization. However, the energy utilization efficiency of a single DBD module is low, resulting in a low sterilization rate, and it is easy to produce substances such as ozone that are harmful to the human body; a single DBD module will inevitably produce nitrogen oxides that are harmful to the human body during the ionization of air, and the active ions such as hydroxyl free radicals produced by ionization have a short life span, are unstable, and cannot be transported over long distances, resulting in limited sterilization and deodorization effects. Summary of the invention

[0003] The main purpose of the embodiment of the present application is to provide an air purification device. By adding liquid water to the dielectric barrier discharge module, the production of substances such as ozone and nitrogen oxides that are harmful to the human body can be reduced, and the number of hydroxyl free radicals produced can be greatly increased, and nano water ions can be generated, thereby greatly enhancing the sterilization and deodorization effects.

[0004] The embodiments of the present application also provide a control method for an air purification device, a control device for an air purification device, and an air treatment device.

[0005] To achieve the above purpose, the technical solution of the embodiment of the present application is as follows:

[0006] An air purification device, comprising:

[0007] A dielectric barrier discharge module comprises a tubular barrier dielectric layer, an inner electrode arranged in the barrier dielectric layer, and an outer electrode arranged outside the barrier dielectric layer; and

[0008] The liquid water generation module is configured to generate liquid water on the outer surface of the barrier dielectric layer, and the dielectric barrier discharge module is configured to ionize air and the liquid water.

[0009] A control method for an air purification device, comprising:

[0010] In response to the received purification instruction, starting the air purification device and controlling the air purification device to enter a purification mode;

[0011] In the purification mode:

[0012] Controlling the liquid water generation module to start working, and the power is a1;

[0013] Based on the working time of the liquid water generating module reaching the first preset time t1, the dielectric barrier discharge module is controlled to start working.

[0014] A control device for an air purification device comprises a processor, a memory and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the steps of the above-mentioned control method when executed by the processor.

[0015] An air treatment device comprises a casing and the above-mentioned air purification device, wherein the casing comprises an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, and the air purification device is arranged at the air inlet or the air outlet or in the air duct.

[0016] In the air purification device of the embodiment of the present application, the liquid water generating module can generate liquid water on the outer surface of the blocking medium layer. When the air purification device is working, the liquid water generating module is first started to generate liquid condensed water on the outer surface of the blocking medium layer; then the dielectric barrier discharge module is started, and the dielectric barrier discharge module can continuously ionize the air and the liquid water on the outer surface of the blocking medium layer to form charged water ions with a longer life and a large number of active ions such as hydroxyl free radicals, and then the airflow brings these ions into the space for sterilization or deodorization.

[0017] The air purification device of the embodiment of the present application adds liquid water to the dielectric barrier discharge module, which can reduce the production of substances such as ozone and nitrogen oxides that are harmful to the human body, greatly increase the number of hydroxyl radicals, and produce nano water ions, greatly enhancing the sterilization and deodorization effects of the air purification device, and has a certain effect of reducing particulate matter. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the front view of the air purification device according to one embodiment of the present application;

[0020] Figure 2 for Figure 1 A schematic diagram of a cross-sectional structure of an air purification device viewed from above;

[0021] Figure 3 This is a schematic diagram of the front view of an air purification device according to another embodiment of the present application;

[0022] Figure 4 This is a flow chart of a control method for an air purification device according to an embodiment of the present application;

[0023] Figure 5 This is a flow chart of a control method for an air purification device according to another embodiment of the present application;

[0024] Figure 6 A comparison chart of the sterilization rates of the air purification device described in one embodiment of the present application and a single DBD module;

[0025] Figure 7 A comparison chart of ammonia removal rates of an air purification device according to an embodiment of the present application and a single DBD module;

[0026] Figure 8 This is a comparison diagram of ozone removal between the air purification device described in one embodiment of the present application and a single DBD module.

[0027] The marking instructions are:

[0028] 1-air purification device, 11-inner electrode, 12-semiconductor cooling sheet, 13-barrier medium layer, 14-outer electrode.

[0029] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] like Figure 1-Figure 3 As shown, an embodiment of the present application provides an air purification device 1, which includes a dielectric barrier discharge module and a liquid water generation module. The dielectric barrier discharge module includes a tubular barrier dielectric layer 13, an inner electrode 11 disposed in the barrier dielectric layer 13, and an outer electrode 14 disposed outside the barrier dielectric layer 13, wherein the inner electrode 11 can be inserted into the barrier dielectric layer 13 and extend along the axial direction of the barrier dielectric layer 13, and the outer electrode 14 can be spirally wound outside the barrier dielectric layer 13 along the axial direction of the barrier dielectric layer 13. The liquid water generation module is configured to generate liquid water on the outer surface of the barrier dielectric layer 13, and the dielectric barrier discharge module is configured to ionize air and liquid water.

[0032] The air purification device 1 of the embodiment of the present application is mainly composed of two parts: a dielectric barrier discharge module and a liquid water generation module. The barrier dielectric layer 13 of the dielectric barrier discharge module is an insulating dielectric layer. When a high voltage is applied between the inner electrode 11 and the outer electrode 14 disposed on both sides of the barrier dielectric layer 13, a strong electric field will be generated in the barrier dielectric layer 13. When the electric field strength exceeds the breakdown strength of the barrier dielectric layer 13, the gas molecules in the medium will be ionized to form plasma.

[0033] The liquid water generating module can generate liquid water on the outer surface of the blocking medium layer 13. When the air purification device 1 is working, the liquid water generating module is first started to generate liquid condensed water on the outer surface of the blocking medium layer 13; then the dielectric barrier discharge module is started, and the dielectric barrier discharge module can continuously ionize the air and the liquid water on the outer surface of the blocking medium layer 13 to form charged water ions with a longer life and a large number of active ions such as hydroxyl free radicals, and then the airflow brings these ions into the space for sterilization or deodorization.

[0034] The air purification device 1 of the embodiment of the present application adds liquid water to the dielectric barrier discharge module, which can reduce the production of substances such as ozone and nitrogen oxides that are harmful to the human body, greatly increase the number of hydroxyl radicals, and produce nano water ions, greatly enhancing the sterilization and deodorization effects of the air purification device 1, and has a certain effect of reducing particulate matter.

[0035] In some exemplary embodiments, an alternating current can be applied between the inner electrode 11 and the outer electrode 14 of the dielectric barrier discharge module, and the inner electrode 11 and the outer electrode 14 are configured to be electrically connected to an AC power supply module (e.g., an AC high-voltage power supply), and one of the inner electrode 11 and the outer electrode 14 is a ground electrode, and the other is a high-voltage electrode, that is, the inner electrode 11 can be a high-voltage electrode, and the outer electrode 14 can be a ground electrode, or the inner electrode 11 can be a ground electrode, and the outer electrode 14 can be a high-voltage electrode. In some embodiments, the outer electrode 14 is a ground electrode, and the inner electrode 11 is a high-voltage electrode. The inner electrode 11 does not contact water, reducing the risk of leakage. Of course, the inner electrode 11 and the outer electrode 14 can also be both high-voltage electrodes.

[0036] Compared to the direct current power supply mode, in the dielectric barrier discharge module of the present application, during the dielectric barrier discharge process, when the voltage of the alternating current exceeds the breakdown voltage of the gas gap, a large number of randomly distributed micro-discharges will appear in the gap. The appearance of this discharge looks like a glow discharge under low pressure from a distance, emitting a light close to blue. From a close look, it is composed of a large number of fine fast pulse discharges in the form of filaments. As long as the air gap between the inner electrode 11 and the outer electrode 14 is uniform, the discharge is uniform, diffuse and stable. These micro-discharges are composed of a large number of fast pulse current filaments, and each current filament is irregularly distributed in the discharge space and time. The discharge channel is basically cylindrical with a radius of about 0.1 to 0.3 mm. The discharge duration is extremely short, about 10 to 100 ns, but the current density can be as high as 0.1 to 1 kA / cm 2 , each current filament is a micro-discharge, which diffuses into surface discharge on the surface of the blocking dielectric layer 13. The difference between the positive and negative ions in the DC power supply mode and the dielectric barrier discharge in the AC power supply mode is that: in the DC power supply mode, the negative ions move in one direction, only gather in one direction, and accumulate near the electrode; while in the AC power supply dielectric barrier discharge module, due to the periodic change of the electric field, the charge will move back and forth, so the phenomenon similar to the electrode hole will not occur; in addition, the special dielectric material used as the blocking dielectric layer 13 in the dielectric barrier discharge module can suppress the free movement of electrons and form electron-hole pairs, thereby increasing the current carrier density and flow velocity, making it easier for the electric field to produce stable discharge. Therefore, the dielectric barrier discharge module of the embodiment of the present application can effectively control the formation and diffusion of the arc, and has the advantages of high efficiency, stability, and reliability.

[0037] More importantly, dielectric barrier discharge is usually carried out under high electric fields, so that gas molecules and water molecules are ionized, excited and collided. These processes can generate various active species, including a large number of hydroxyl radicals. Hydroxyl radicals are very reactive free radicals. They have the ability to oxidize and reduce other molecules and play an extremely important role in environmental purification and waste gas treatment. The negative ions generated by direct current power supply are mainly produced through electrochemical reactions or electrolysis processes. These negative ions are usually negatively charged atmospheric molecules, such as oxygen anions (O-) or nitrogen anions (N-). Moreover, under direct current power supply conditions, the main reactions of negative ions are often related to electron transfer with other substances, and they will not react with water molecules to form hydroxyl radicals.

[0038] In some exemplary embodiments, the liquid water generating module includes a semiconductor refrigeration plate, the cold end of which is configured to generate cold energy and conduct it to the blocking medium layer 13, so that water molecules in the air condense on the outer surface of the blocking medium layer 13 to generate liquid water.

[0039] The liquid water generation module includes a semiconductor refrigeration sheet, and the raw materials of the semiconductor refrigeration sheet include bismuth antimonide, cadmium indium selenide, etc. When the semiconductor refrigeration sheet is powered on, a temperature difference is generated between the cold end and the hot end of the semiconductor refrigeration sheet, and the temperature of the cold end continues to decrease. The coldness of the cold end can be conducted to the blocking medium layer 13, thereby driving the temperature of the blocking medium layer 13 to decrease, and the water molecules in the air condense on the outer surface of the blocking medium layer 13 to produce liquid condensed water; then the dielectric barrier discharge module is started, and the high-voltage AC electric field continuously ionizes the air and condensed water on the outer surface of the blocking medium layer 13, forming charged water ions and a large number of active ions such as hydroxyl free radicals, and then these ions are brought into the space by high-speed airflow for sterilization or deodorization.

[0040] In some exemplary embodiments, at least one semiconductor refrigeration sheet is provided, and the at least one semiconductor refrigeration sheet is annular and is sleeved outside the blocking medium layer 13 .

[0041] The inner electrode 11, the outer electrode 14, the blocking medium layer 13 and the semiconductor refrigeration sheet together constitute the air purification device 1. The inner electrode 11 and the outer electrode 14 can be made of conductive media such as stainless steel and are electrically connected to a high-voltage AC power supply; the blocking medium layer 13 can be made of insulating media such as quartz and glass; the semiconductor refrigeration sheet can be annular and be sleeved on the outside of the blocking medium layer 13. The cold energy generated by the cold end of the semiconductor refrigeration sheet can be transferred to the blocking medium layer 13 to generate condensed water on the outer surface of the blocking medium layer 13.

[0042] In some exemplary embodiments, at least one semiconductor refrigeration chip includes a first semiconductor refrigeration chip 12, wherein Figure 1 and Figure 2 As shown, the first semiconductor cooling sheet 12 may be provided with one and sleeved on one end of the blocking medium layer 13; or Figure 3 As shown, two first semiconductor refrigeration sheets 12 may be provided, and are respectively sleeved at both ends of the barrier medium layer 13. The cold end of the first semiconductor refrigeration sheet 12 sleeved at one end or both ends of the barrier medium layer 13 may contact the outer surface of the barrier medium layer 13 to transfer cold energy to the barrier medium layer 13, thereby realizing single-sheet refrigeration or double-sheet refrigeration, so as to generate condensed water on the outer surface of the barrier medium layer 13.

[0043] The first semiconductor refrigeration sheet 12 is sleeved at both ends of the blocking medium layer 13, which can quickly generate condensed water on the outer surface of the blocking medium layer 13, thereby facilitating the rapid start-up of the dielectric barrier discharge module to achieve rapid sterilization and deodorization of the air purification device 1.

[0044] In some exemplary embodiments, it should be understood that the semiconductor refrigeration plate is not limited to the first semiconductor refrigeration plate 12 which is mounted on one or both ends of the blocking medium layer 13, but may also be in other forms, such as: at least one semiconductor refrigeration plate may include at least one second semiconductor refrigeration plate, the second semiconductor refrigeration plate may be mounted in the middle of the blocking medium layer 13, and an insulating layer is provided between the second semiconductor refrigeration plate and the external electrode 14 to prevent the two from being electrically connected and affecting the normal operation of the semiconductor refrigeration plate and the dielectric barrier discharge module; or, at least one semiconductor refrigeration plate may include the first semiconductor refrigeration plate 12 and the second semiconductor refrigeration plate at the same time to realize other cooling methods besides single-chip refrigeration and double-chip refrigeration, such as three-chip refrigeration, four-chip refrigeration, five-chip refrigeration, etc.

[0045] By changing the number of semiconductor refrigeration chips, the cooling speed can be changed, the cooling capacity can be increased, and thus the amount of condensed water can be increased.

[0046] It should be understood that the liquid water generating module is not limited to generating condensed water on the outer surface of the blocking medium layer 13 through semiconductor refrigeration sheets, but may also be other ways, such as: in other exemplary embodiments, the liquid water generating module includes a spraying device, and the spraying device is configured to spray liquid water onto the outer surface of the blocking medium layer 13.

[0047] It should be understood that the material of the blocking dielectric layer 13 is not limited to quartz or glass, and may also be other insulating materials, such as mica, ceramic, plastic, etc.

[0048] It should be understood that the material of the inner electrode 11 and the outer electrode 14 is not limited to stainless steel, but may also be other conductive materials, such as copper, iron, nickel, tungsten, molybdenum, etc.

[0049] An embodiment of the present application also provides a control method for an air purification device, where the air purification device is the air purification device of any of the above embodiments.

[0050] like Figure 4 As shown, the control method includes: in response to the received purification instruction, starting the air purification device and controlling the air purification device to enter the purification mode. The purification mode includes:

[0051] Controlling the liquid water generation module to start working with a power of a1; and

[0052] Based on the working time of the liquid water generating module reaching the first preset time t1, the dielectric barrier discharge module is controlled to start working.

[0053] After receiving the purification instruction, the air purification device 1 starts and controls the air purification device 1 to enter the purification mode. In the purification mode, the liquid water generation module is first controlled to start and work at power a1 to generate liquid water on the outer surface of the blocking medium layer 13 of the dielectric barrier discharge module; when the working time of the liquid water generation module reaches the first preset time t1, sufficient liquid water can be generated on the outer surface of the blocking medium layer 13, and the liquid water can be more evenly distributed on the outer surface of the blocking medium layer 13. At this time, the dielectric barrier discharge module can be started, and the dielectric barrier discharge module can continuously ionize the air and the liquid water on the outer surface of the blocking medium layer 13 to form charged water ions with a longer life and a large number of active ions such as hydroxyl radicals, and then these ions are brought into the space by the airflow for sterilization or deodorization.

[0054] The purification instruction may be sent by the user, or may be generated according to the detected indoor air quality parameters, so as to start the air purification device 1 for purification when the indoor air quality parameters do not meet the preset conditions.

[0055] In some exemplary embodiments, the control method further includes:

[0056] Based on the working time of the liquid water generating module reaching the first preset time t1, the power of the liquid water generating module is controlled to be adjusted to a2, and a1>a2.

[0057] When the working time of the liquid water generating module reaches the first preset time t1, while starting the dielectric barrier discharge module, the power of the liquid water generating module can be adjusted to a2, and a1>a2, that is, the power of the liquid water generating module is reduced. Before starting the dielectric barrier discharge module, the power a1 of the liquid water generating module is set to be relatively large, so that sufficient liquid water can be quickly generated on the outer surface of the blocking medium layer 13, so as to quickly start the dielectric barrier discharge module, so as to achieve rapid sterilization and deodorization of the air purification device 1.

[0058] In some exemplary embodiments, the value range of the first preset time t1 may be related to the liquid water generating module (e.g., the model, size, and power of the semiconductor cooling plate), the humidity of the air, the material of the blocking medium layer 13, the area of ​​the outer surface of the blocking medium layer 13, the surface smoothness of the blocking medium layer 13, etc. The first preset time t1 is determined by the amount of liquid condensed water generated, and the generated liquid condensed water is required to adhere to the outer surface of the blocking medium layer 13 without converging into a flow.

[0059] For example, when the air humidity is 55%, the material of the barrier medium layer 13 is glass, and the area of ​​the outer surface of the glass tube is 587 mm 2 , the power of the semiconductor refrigeration plate is 5W. Under this condition, the first preset time t1 can be set to about 25 minutes.

[0060] In some exemplary embodiments, the purification mode further includes:

[0061] Based on the time duration that the liquid water generating module operates at the power a2 reaching the second preset time duration t2, controlling the liquid water generating module to stop operating;

[0062] When the working time of the dielectric barrier discharge module reaches a third preset time t3, the dielectric barrier discharge module is controlled to stop working;

[0063] Since both the liquid water generation module and the dielectric barrier discharge module stop working, the air purification device 1 exits the purification mode.

[0064] After entering the purification mode, the liquid water generating module is first controlled to start and work at power a1; when the working time of the liquid water generating module at power a1 reaches the first preset time t1, the dielectric barrier discharge module can be started, and the power of the liquid water generating module is adjusted to a2; when the working time of the liquid water generating module at power a2 reaches the second preset time t2, it stops working, and the working time of the dielectric barrier discharge module reaches the third preset time t3, and when both the liquid water generating module and the dielectric barrier discharge module stop working, the air purification device 1 exits the purification mode. At this time, the air purification device 1 completes a cycle of the purification mode, that is, completes one air purification.

[0065] In some exemplary embodiments, the control method further includes:

[0066] After the air purification device 1 exits the purification mode, indoor air quality parameters are detected;

[0067] If the detected indoor air quality parameter does not meet the preset condition, the air purification device 1 is controlled to re-enter the purification mode after the fourth preset time t4.

[0068] When the air purification device 1 exits the purification mode and completes one air purification, the indoor air quality parameters after purification are detected. If the detected indoor air quality parameters do not meet the preset conditions, that is, the air quality does not meet the standards, the air purification device 1 is controlled to re-enter the purification mode after the fourth preset time t4, that is, the air purification device 1 is controlled to exit the purification mode and then re-enter the purification mode after the fourth preset time t4.

[0069] After the dielectric barrier discharge modules stop working, there may be residual liquid water on the outer surface of the blocking dielectric layer 13. If the air purification device 1 detects that the indoor air quality parameters do not meet the preset conditions after exiting the purification mode and directly re-enters the purification mode, since the power a1 of the liquid water generating module before the dielectric barrier discharge module is started is different from the power a2 after the dielectric barrier discharge module is started, a1>a2, if the liquid water generating module is required to operate at power a1 at the beginning of the next purification mode cycle, the amount of liquid water generated on the outer surface of the blocking dielectric layer 13 may be too much and converge into a stream and then drip. The air purification device 1 exits the purification mode for the fourth preset time t4. During this process, the remaining liquid water on the outer surface of the blocking dielectric layer 13 can evaporate to avoid excessive liquid water on the outer surface of the blocking dielectric layer 13 from dripping during the next purification mode cycle.

[0070] In some exemplary embodiments, the control method further includes:

[0071] If the detected indoor air quality parameters meet the preset conditions, the air purification device is turned off.

[0072] When the air purification device 1 exits the purification mode and completes one air purification, the indoor air quality parameters after purification are detected. If the detected indoor air quality parameters meet the preset conditions, that is, the air quality is up to standard, the air purification device 1 is controlled to be turned off to complete the air purification.

[0073] In some exemplary embodiments, the value range of a1 is 4-10W, the value range of a2 is 2-6W, the value range of t1 is 15-40min, the value range of t2 is 30-20min, the value range of t3 is 30-120min, and the value range of t4 is 60-120min. Among them, t2 and t3 can be equal or unequal, that is, the liquid water generation module and the dielectric barrier discharge module can stop working at the same time, or stop working at different times, such as: t2<t3, the liquid water generation module stops working before the dielectric barrier discharge module.

[0074] Of course, the value ranges of a1, a2, t1, t2, t3, and t4 are not limited to those described above, and can also be adjusted according to actual needs.

[0075] In some exemplary embodiments, the air quality parameters include any one or more of aerosol concentration, VOCs concentration, and odor molecule concentration.

[0076] When the air purification device 1 is sterilizing, the indoor aerosol concentration can be detected and the indoor aerosol concentration that is safe for human body is set as C0. The value range of C0 is: 0~1500 CFU / m 3(Refer to GB / T18883-2022). After completing a purification mode cycle, the indoor aerosol concentration is detected, recorded as C1, and it is determined whether C1 is less than C0. If so, the sterilization target is achieved, the purification device is turned off, and the program ends; if not, the purification mode cycle is re-entered after time t4.

[0077] When the air purification device 1 is performing deodorization, the concentration of corresponding VOCs (Volatile Organic Compounds) or odor molecules in the room, such as formaldehyde, sulfide, ammonia, ozone, etc., can be detected.

[0078] In some exemplary embodiments, the sterilization process of the air purification device 1 is as follows: Figure 5 shown.

[0079] First, set the indoor aerosol concentration C0 that is safe for the human body; then, turn on the air purification device, turn on the semiconductor refrigeration plate, and make the semiconductor refrigeration plate run at a1 power for t1 minute (time t1 is determined by the amount of liquid condensed water, and the liquid condensed water is required to adhere to the outer surface of the blocking medium layer 13 without converging into a flow); after liquid condensed water is evenly generated on the outer surface of the blocking medium layer, run the semiconductor refrigeration plate at a2 power for t2 minutes, and turn on the DBD module for t3 minutes; after the semiconductor refrigeration plate and the DBD module finish running, detect the indoor aerosol concentration, which is recorded as C1; determine whether C1 is less than C0. If so, the sterilization goal is achieved, the purification device is turned off, and the program ends; if not, the purification device is turned off for t4 minutes, and then reopened to enter the cycle.

[0080] The deodorization process is similar to the sterilization process, but it is necessary to detect the concentration of corresponding VOCs or odor molecules in the room.

[0081] The air purification device 1 of the embodiment of the present application is applied to air treatment equipment, such as an air conditioner. The air purification device 1 can be arranged in the indoor unit of the air conditioner, and the air purification device 1 can be placed at the air outlet.

[0082] Figure 6 It is a comparison chart of the sterilization rate of the air purification device 1 according to the embodiment of the present application and a single DBD module. Figure 6 The input power of the DBD module is 1W, the cabin is 30 cubic meters, the temperature is 24.45℃, the humidity is 59%, and the air volume at the outlet is 300m 3 The results are measured under the condition of 100 ℃ / h, wherein curve ① represents the sterilization rate of the air purification device 1 of the embodiment of the present application, and curve ② represents the sterilization rate of a single DBD module.

[0083] Figure 7 It is a comparison chart of ammonia removal rate between the air purification device 1 according to the embodiment of the present application and a single DBD module. Figure 7 The input power of the DBD module is 1W, the cabin is 30 cubic meters, the temperature is 23.01℃, the humidity is 52%, and the air volume at the outlet is 350m 3 / h, wherein curve ③ represents the ammonia removal rate of the air purification device 1 of the embodiment of the present application, and curve ④ represents the ammonia removal rate of a single DBD module.

[0084] Figure 8 It is a comparison diagram of the deozone performance of the air purification device 1 according to the embodiment of the present application and a single DBD module. Figure 8 The input power of the DBD module is 1W, the cabin is 30 cubic meters, the temperature is 24.45℃, the humidity is 59%, and the air volume at the outlet is 300m 3 / h conditions, wherein curve ⑤ represents the indoor ozone concentration after deozonation using the air purification device 1 of the embodiment of the present application, and curve ⑥ represents the indoor ozone concentration after deozonation using a single DBD module.

[0085] Depend on Figure 6 and Figure 7 It can be seen that after adding semiconductor cooling film to the dielectric barrier discharge module, the sterilization effect in 2 hours increased to 99.5%, and the ammonia removal rate in 2 hours increased by 46%. Figure 8 It can be seen that after 2 hours, the ozone concentration at 5 cm from the air outlet dropped from 97.5 ppb to 0.5 ppb, which greatly improved the safety of the air purification device 1 and reduced the harm to the human body.

[0086] An embodiment of the present application also provides a control device for an air purification device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, the steps of the control method of any of the above embodiments are implemented.

[0087] An embodiment of the present application also provides an air treatment device, including a casing and an air purification device 1 of any of the above embodiments, the casing including an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, and the air purification device 1 is arranged at the air inlet or the air outlet or in the air duct.

[0088] The air purification device 1 can be placed at the air outlet, so that the charged water ions and a large number of active ions such as hydroxyl radicals generated by the air purification device 1 can quickly enter the room with the air flow to purify the indoor air.

[0089] The air purification device 1 can be placed vertically (such as Figure 1 as shown), horizontal placement (as shown Figure 3 As shown) or placed in other ways, such as: the air purification device 1 can be placed at an angle of 60 degrees, 45 degrees, etc.

[0090] In some exemplary embodiments, the air treatment equipment also includes a control device of any of the above embodiments, which can be electrically connected to the dielectric barrier discharge module and the liquid water generation module of the air purification device 1, and control the operation of the dielectric barrier discharge module and the liquid water generation module.

[0091] In some exemplary embodiments, the air treatment device further includes a detection module, which is configured to detect indoor air quality parameters (such as aerosol concentration, VOCs concentration, odor molecule concentration, etc.) and is electrically connected to the control device.

[0092] The indoor air quality parameters detected by the detection module can be sent to the control device. When the detected indoor air quality parameters do not meet the preset conditions, the control device can issue a purification instruction to control the air purification device 1 to start air purification, or, after the air purification device 1 completes a purification mode cycle, control the air purification device 1 to re-enter the purification mode after time t4; when the detected indoor air quality parameters meet the preset conditions, the control device shuts down to complete the air purification process.

[0093] In some exemplary embodiments, the air treatment device may be an air conditioner or an air purifier or other products.

[0094] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0097] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0098] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0099] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0100] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. An air purification device, characterized in that: include: The dielectric barrier discharge module comprises a tubular barrier dielectric layer, an inner electrode arranged in the barrier dielectric layer, and an outer electrode arranged outside the barrier dielectric layer; and The liquid water generation module is configured to generate liquid water on the outer surface of the barrier dielectric layer, and the dielectric barrier discharge module is configured to ionize air and the liquid water.

2. The air purification device according to claim 1, characterized in that: The liquid water generation module comprises a semiconductor refrigeration plate, the cold end of which is configured to generate cold energy and conduct it to the blocking medium layer, so that water molecules in the air condense on the outer surface of the blocking medium layer to generate liquid water.

3. The air purification device according to claim 2, characterized in that: There is at least one semiconductor refrigeration plate, and the at least one semiconductor refrigeration plate is annular and is sleeved outside the blocking medium layer.

4. The air purification device according to claim 3, characterized in that: At least one of the semiconductor refrigeration sheets comprises: A first semiconductor refrigeration sheet, wherein the first semiconductor refrigeration sheet is provided with one and sleeved at one end of the barrier medium layer, or the first semiconductor refrigeration sheet is provided with two and sleeved at both ends of the barrier medium layer respectively, and the cold end of the first semiconductor refrigeration sheet is in contact with the outer surface of the barrier medium layer; and / or The second semiconductor refrigeration sheet is sleeved in the middle of the blocking medium layer, and an insulating layer is provided between the second semiconductor refrigeration sheet and the external electrode.

5. The air purification device according to claim 1, characterized in that: The liquid water generation module comprises a spray device, and the spray device is configured to spray liquid water onto the outer surface of the blocking medium layer.

6. The air purification device according to any one of claims 1 to 5, characterized in that: The inner electrode and the outer electrode are configured to be electrically connected to an AC power supply module, one of the inner electrode and the outer electrode is a ground electrode, and the other is a high-voltage electrode, or both the inner electrode and the outer electrode are high-voltage electrodes; The inner electrode penetrates the blocking dielectric layer and extends along the axial direction of the blocking dielectric layer, and the outer electrode is spirally wound outside the blocking dielectric layer along the axial direction of the blocking dielectric layer.

7. The air purification device according to any one of claims 1 to 5, characterized in that: The material of the blocking medium layer is quartz, glass, mica, ceramic or plastic; The inner electrode and the outer electrode are made of copper, iron, nickel, tungsten, molybdenum or stainless steel.

8. A control method for an air purification device according to any one of claims 1 to 7, characterized in that: include: In response to the received purification instruction, starting the air purification device and controlling the air purification device to enter a purification mode; The purification modes include: Controlling the liquid water generation module to start working, and the power is a1; and Based on the working time of the liquid water generating module reaching the first preset time t1, the dielectric barrier discharge module is controlled to start working.

9. The control method according to claim 8, characterized in that: The purification mode also includes: Based on the working time of the liquid water generating module reaching the first preset time t1, the power of the liquid water generating module is controlled to be adjusted to a2, and a1>a2.

10. The control method according to claim 9, characterized in that: The purification mode also includes: Based on the time duration that the liquid water generating module operates at the power a2 reaching the second preset time duration t2, controlling the liquid water generating module to stop operating; When the working time of the dielectric barrier discharge module reaches a third preset time t3, the dielectric barrier discharge module is controlled to stop working; Based on the fact that both the liquid water generation module and the dielectric barrier discharge module stop working, the air purification device exits the purification mode.

11. The control method according to claim 10, characterized in that: Also includes: After the air purification device exits the purification mode, detecting indoor air quality parameters; Based on the fact that the detected indoor air quality parameter does not meet the preset condition, the air purification device is controlled to re-enter the purification mode after a fourth preset time t4.

12. The control method according to claim 11, characterized in that: Also includes: If the detected indoor air quality parameter meets a preset condition, the air purification device is turned off.

13. The control method according to claim 11 or 12, characterized in that: The air quality parameters include any one or more of aerosol concentration, VOCs concentration, and odor molecule concentration.

14. The control method according to claim 11 or 12, characterized in that: The value range of a1 is 4-10w, the value range of a2 is 2-6w, the value range of t1 is 15-40min, the value range of t2 is 30-20min, the value range of t3 is 30-120min, and the value range of t4 is 60-120min.

15. A control device for an air purification device, characterized in that: The method comprises a processor, a memory, and a computer program stored in the memory and capable of running on the processor, wherein the computer program implements the steps of the control method according to any one of claims 8 to 14 when executed by the processor.

16. An air treatment device, characterized in that: It comprises a casing and an air purification device according to any one of claims 1 to 7, wherein the casing comprises an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet, and the air purification device is arranged at the air inlet or the air outlet or in the air duct.

17. The air treatment device according to claim 16, characterized in that Also includes: The control device of the air purification device described in claim 15 is electrically connected to the dielectric barrier discharge module and the liquid water generating module of the air purification device, and controls the operation of the dielectric barrier discharge module and the liquid water generating module.

18. The air treatment device according to claim 17, characterized in that Also includes: The detection module is configured to detect indoor air quality parameters and is electrically connected to the control device.

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