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

Abstract

According to the air purification device, the air treatment equipment and the control method and device of the air purification device, the discharge assembly can be used as an energy source and cooperates with a catalyst in the catalyst module to degrade peculiar smell and purify air, and the situation that a traditional adsorption technology fails after saturation is avoided; and parts such as an ultraviolet light source which are harmful to machine parts or human body health do not need to be arranged. The air purification device is provided with a first discharge assembly, a catalyst module and a second discharge assembly; the catalyst module is provided with a gas passing channel; in the gas passing direction of the gas passing channel, the catalyst module is located on the downstream side of the first discharging assembly and can cooperate with active substances generated by discharging of the first discharging assembly so as to purify the first space. In the gas passing direction of the gas passing channel, the second discharging assembly is arranged on the downstream side of the catalyst module and is arranged to be capable of discharging to generate active substances so as to purify the second space.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air purification, in particular to an air purification device, an air treatment equipment and a control method and control device thereof. BACKGROUND

[0002] At present, non-regenerative adsorption, photocatalysis and other methods are commonly used in household appliances for air purification and odor removal.

[0003] Traditional non-regenerative adsorption technology has the problem of secondary pollution after saturation, and the adsorbent needs to be replaced regularly. In addition, non-regenerative adsorption technology generally uses activated carbon material as the adsorbent. Because the adsorption capacity of activated carbon is low, more activated carbon material needs to be filled in the appliance to achieve rapid adsorption and purification effect on harmful gases in the air, which increases the air resistance of the appliance.

[0004] Traditional photocatalysis technology needs to be equipped with ultraviolet light, which can cause aging of the machine and harm to the human body.

[0005] Therefore, the non-regenerative adsorption, photocatalysis and other methods used in household appliances have certain limitations and negative problems. SUMMARY

[0006] The technical problem to be solved by the present application is to provide an air purification device, an air treatment equipment and a control method and control device thereof, which can use a discharge assembly as an energy source to cooperate with the catalyst in the catalyst module to degrade odor and purify air, avoid the saturation failure of traditional adsorption technology, and do not need to be equipped with ultraviolet light source and other components that can harm the machine parts or human health.

[0007] The air purification device provided by the embodiment of the present application is provided with a first discharge assembly, a catalyst module and a second discharge assembly; the catalyst module is provided with an air passage; along the air passage direction of the air passage, the catalyst module is located on the downstream side of the first discharge assembly and is arranged to cooperate with the active substance generated by the discharge of the first discharge assembly to purify the first space; along the air passage direction of the air passage, the second discharge assembly is arranged on the downstream side of the catalyst module and is arranged to generate active substance by discharge to purify the second space.

[0008] The air purification device provided in this application embodiment is equivalent to a dual-purification functional module structure design, including a first purification module and a second purification module. The first purification module can be used to purify the air in a first space. The purification principle is based on the synergistic effect of the active substances generated by the discharge of the first discharge component and the catalyst of the catalyst module. The active substances may include: free radicals (such as oxygen free radicals (O·), hydroxyl free radicals (OH·), etc.), ozone, and other active oxygen species (such as superoxide free radicals (O·-), etc.), which can degrade bacteria and other microorganisms, organic pollutant molecules, and odor molecules in the air, thereby achieving the effect of purification and deodorization. The catalyst module itself can decompose some pollutants and can also work synergistically with the active substances generated by the discharge of the first discharge component to improve the purification and deodorization effect and eliminate byproducts such as ozone.

[0009] Due to the interception effect of the catalyst module, the active substances generated by the discharge of the first discharge component have difficulty reaching the downstream side of the catalyst module, thus making it difficult to purify and deodorize the internal space of the air handling equipment. However, the second purification module is located downstream of the catalyst module, so the active substances generated by the discharge of the second discharge component are not intercepted by the catalyst module and can be directly blown into the interior of the air handling equipment, thereby purifying and deodorizing the internal space of the air handling equipment.

[0010] In this way, when the first and second discharge components are working, the first purification module can purify and deodorize the air in the indoor space (i.e., the first space), and the second purification module can purify and deodorize the air in the internal space of the air handling equipment (i.e., the second space), thus addressing the purification and deodorization needs of both the indoor space and the internal space of the air handling equipment. Furthermore, this air purification device does not suffer from the failure that occurs after saturation in traditional adsorption technologies, nor does it require components such as ultraviolet light sources that could harm machine parts or human health. The catalyst can also eliminate byproducts such as ozone and improve the mineralization rate of pollutants, helping to avoid secondary pollution.

[0011] This application also provides an air handling device, including an air purification device as described in any of the above embodiments.

[0012] This application also provides a control method for an air purification device as described in the above embodiments, the control method comprising:

[0013] Determine the target purification mode, which includes a first purification mode and a second purification mode;

[0014] Based on the target purification mode being the first purification mode, the first discharge component is controlled to be turned on in order to purify the first space;

[0015] Based on the target purification mode being the second purification mode, the second discharge component is turned on and the first discharge component is turned off to purify the second space.

[0016] This application also provides a control device, including a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the steps of the control method as described in any of the above embodiments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an air purification device provided in some embodiments of this application;

[0018] Figure 2 A schematic diagram of the structure of an air purification device (with the second discharge component removed) provided in some embodiments of this application;

[0019] Figure 3 A schematic diagram of the structure of an air purification device (with the second discharge component removed) provided in some embodiments of this application;

[0020] Figure 4 A flowchart illustrating the control method provided in some embodiments of this application;

[0021] Figure 5 A schematic flowchart illustrating a control method provided in one embodiment of this application;

[0022] Figure 6 A schematic diagram illustrating the relationship between the distance between the electrode plane of the first discharge component and the catalyst module, and the discharge power of the first discharge component;

[0023] Figure 7 A schematic diagram illustrating the relationship between the discharge power of the first discharge component and the methanethiol removal rate is shown.

[0024] Figure 8 The diagram illustrates the relationship between the discharge power of the discharge component and the ozone increment under conditions with and without a catalyst module.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1-Discharge electrode, 11-Electrode substrate, 12-Discharge section, 121-Sawtooth, 122-Discharge wire, 13-Electrode wire, 2-Counter electrode, 3-Insulating honeycomb structure, 31-Air inlet side, 311-Air inlet end face. Detailed Implementation

[0027] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0028] Air purification devices in related technologies primarily focus on purifying the air and removing odors in the space where the air handling unit is located (i.e., indoor space), but they have certain limitations and negative issues. However, during long-term use, bacteria and other microorganisms can grow inside air handling units, producing odors and other problems. Yet, these air purification devices rarely address the purification and odor removal needs within the air handling unit itself, failing to solve these internal purification and odor removal requirements.

[0029] Therefore, this application provides an air purification device, an air handling equipment including the air purification device, and a control method and control device thereof, which is beneficial to improving the limitations and negative problems of air purification devices when purifying indoor air, and is also beneficial to taking into account the purification and deodorization needs of both indoor space and the internal space of the air handling equipment.

[0030] There are no restrictions on the types of air handling equipment, such as air conditioners, air purifiers, sterilizers, humidifiers, dehumidifiers, and other devices with air handling functions. Air purification devices can be installed at the air inlet of the air handling equipment.

[0031] like Figure 1 As shown in the figure, this application provides an air purification device, which includes a first discharge component, a catalyst module, and a second discharge component. The catalyst module has an air passage.

[0032] like Figure 1 As shown, along the airflow direction of the airflow channel, the catalyst module is located downstream of the first discharge component and is configured to synergistically interact with the active material generated by the discharge of the first discharge component to purify the first space. The first space can be the space where the air handling equipment is located, i.e., an indoor space. The catalyst in the catalyst module may only have catalytic activity, or the catalyst may have both catalytic and adsorption activity, i.e., the catalyst may be an adsorption catalyst that simultaneously has catalytic and adsorption activities.

[0033] like Figure 1 As shown, along the gas flow direction of the gas flow channel, the second discharge component is located downstream of the catalyst module and is configured to discharge and generate active substances to purify the second space. The second space can be the internal space of an air handling unit.

[0034] Therefore, the first discharge component, in conjunction with the catalyst module, acts as a first purification module, capable of purifying the first space. This includes degrading and killing bacteria and other microorganisms, decomposing organic pollutants (such as TVOCs), and removing odors, thereby improving air quality and eliminating odors. Similarly, the second discharge component acts as a second purification module, capable of purifying the second space by degrading and killing bacteria and other microorganisms, decomposing organic pollutants (such as TVOCs), and removing odors, thus improving air quality and eliminating odors.

[0035] Thus, the air purification device provided in this application embodiment is equivalent to a dual-purification functional module structure design, including a first purification module and a second purification module. The first purification module can be used to purify the air in the first space. The purification principle is based on the synergistic effect of the active substances generated by the discharge of the first discharge component and the catalyst of the catalyst module. The active substances may include: free radicals (such as oxygen free radicals (O·), hydroxyl free radicals (OH·), etc.), ozone, and other active oxygen species (such as superoxide free radicals (O·-), etc.), which can degrade bacteria and other microorganisms, organic pollutant molecules, and odor molecules in the air, thereby achieving the effect of purification and deodorization. The catalyst module itself can decompose some pollutants and can also work synergistically with the active substances generated by the discharge of the first discharge component to improve the purification and deodorization effect and eliminate byproducts such as ozone.

[0036] Due to the interception effect of the catalyst module, the active substances generated by the discharge of the first discharge component have difficulty reaching the downstream side of the catalyst module, thus making it difficult to purify and deodorize the internal space of the air handling equipment. However, the second purification module is located downstream of the catalyst module, so the active substances generated by the discharge of the second discharge component are not intercepted by the catalyst module and can be directly blown into the interior of the air handling equipment, thereby purifying and deodorizing the internal space of the air handling equipment.

[0037] In this way, when the first and second discharge components are working, the first purification module can purify and deodorize the air in the indoor space (i.e., the first space), and the second purification module can purify and deodorize the air in the internal space of the air handling equipment (i.e., the second space), thus addressing the purification and deodorization needs of both the indoor space and the internal space of the air handling equipment. Furthermore, this air purification device does not suffer from the failure that occurs after saturation in traditional adsorption technologies, nor does it require components such as ultraviolet light sources that could harm machine parts or human health. The catalyst can also eliminate byproducts such as ozone and improve the mineralization rate of pollutants, helping to avoid secondary pollution.

[0038] Understandably, a small portion of the active substances generated by the first discharge component can pass through the catalyst module, thus purifying and deodorizing the internal space of the air handling equipment. Similarly, some of the active substances generated by the second discharge component can be blown into the indoor space, further purifying and deodorizing it. Therefore, the first purification module can purify and deodorize the air in the first space, but it is not limited to this; it can also purify the air in the second space. Likewise, the second purification module can purify and deodorize the air in the second space, but it is not limited to this; it can also purify the air in the first space.

[0039] In some exemplary embodiments, the catalyst module includes a support with an air passage and a catalyst supported on the support. The catalyst includes one or more of hydrotalcite, transition metal and / or noble metal modified molecular sieves, and transition metal and / or noble metal modified alumina.

[0040] The transition metals include one or more of manganese (Mn), cerium (Ce), iron (Fe), copper (Cu), nickel (Ni), and lanthanum (La). The precious metals include one or more of silver (Ag), platinum (Pt), palladium (Pd), ruthenium (Ru), rhodium (Rh), and gold (Au). The appropriate transition metals and / or precious metals can be selected and set according to the operating parameters of the air purification module.

[0041] Specifically, hydrotalcite can serve as an alkaline catalyst, a redox catalyst, and a catalyst support. Hydrotalcite also possesses ion exchange and adsorption properties; therefore, it can be selected as a catalyst supported on a carrier. Since transition metals and / or noble metals can undergo catalytic and cross-coupling reactions with organic compounds, configuring the catalyst on the carrier as a transition metal and / or noble metal-modified molecular sieve or a transition metal and / or noble metal-modified alumina can improve the efficiency of the first purification module in degrading and decomposing VOCs and removing odors.

[0042] The appropriate catalyst can be selected based on the specific type of pollutants that the air purifier needs to purify, the operating parameters of the air purifier, the type of byproducts produced, and the cost of the air purifier itself.

[0043] In some exemplary embodiments, the discharge spacing of the first discharge component can be in the range of, but is not limited to, 9mm to 25mm, such as 9mm, 10mm, 15mm, 20mm, 25mm, etc. The discharge spacing of the second discharge component can be in the range of, but is not limited to, 5mm to 25mm, such as 5mm, 9mm, 10mm, 15mm, 20mm, 25mm, etc. The absolute value of the excitation voltage of the first discharge component can be in the range of, but is not limited to, 5kV to 15kV. The absolute value of the excitation voltage of the second discharge component can be in the range of, but is not limited to, 5kV to 15kV.

[0044] Taking into account assembly errors, processing errors, etc., in actual products, the discharge spacing of the first discharge component and the discharge spacing of the second discharge component can fluctuate within the error range.

[0045] In some exemplary embodiments, the air purification device further includes a housing (not shown in the figures). The housing has an air inlet and an air outlet communicating with an air passage. The catalyst module is disposed within the housing. The housing may be a plastic housing.

[0046] As for the shape of the shell, there are no restrictions. For example, the shell can be roughly rectangular, and the catalyst module can also be rectangular. Regular shapes are easy to process and assemble.

[0047] In some exemplary embodiments, the discharge power of the first discharge component is greater than the discharge power of the second discharge component. Discharge power can also be called output power.

[0048] Since the first discharge component is mainly used in conjunction with the catalyst module to purify and deodorize the indoor space, and the second discharge component is mainly used to purify and deodorize the internal space of the air handling equipment, and the first space is significantly larger than the second space, the discharge power of the first discharge component needs to be greater than that of the second discharge component to ensure that enough active substances can be generated to meet the purification and deodorization needs of the first space.

[0049] On the other hand, the ozone and other byproducts generated by the first discharge component can be degraded by the catalyst module, so the adverse effects of ozone and other byproducts are relatively small, and therefore the discharge power can be relatively large. However, the second discharge component is located downstream of the catalyst module. If the discharge power is too large, the generated ozone and other byproducts cannot be processed by the catalyst module in time, resulting in a greater adverse effect. Therefore, the discharge power is appropriately smaller to reduce the adverse effects of ozone and other byproducts.

[0050] In some exemplary embodiments, the discharge spacing of both the first discharge component and the second discharge component is smaller than the distance between the first discharge component and the second discharge component along the gas flow direction. The discharge spacing of the first discharge component refers to the electrode spacing between adjacent discharge electrodes 1 and counter electrodes 2 of the first discharge component. The discharge spacing of the second discharge component refers to the electrode spacing between adjacent discharge electrodes 1 and counter electrodes 2 of the second discharge component.

[0051] In other words, the spacing between electrodes within a group is smaller than the spacing between groups, so as to ensure that the discharge processes of the first discharge component and the second discharge component are independent of each other and will not affect each other.

[0052] The end face of the first discharge component near the air inlet face 311 of the catalyst module can be coplanar and can be referred to as the electrode plane. The end face of the second discharge component near the air outlet face of the catalyst module can be coplanar and can be referred to as the electrode plane. Figure 6 This diagram illustrates the relationship between the distance between the electrode plane of the first discharge component and the catalyst module, and the discharge power of the first discharge component. Figure 7 The diagram illustrates the relationship between the discharge power of the first discharge component and the methanethiol removal rate. Figure 8 The diagram illustrates the relationship between the discharge power of the discharge component and the ozone increment under conditions with and without a catalyst module. The upper curve represents the curve without a catalyst module, and the lower curve represents the curve with a catalyst module.

[0053] Depend on Figure 6 It can be seen that, with a fixed discharge spacing, the discharge power of the first discharge component first decreases and then increases as the distance between the electrode plane and the catalyst module increases. From... Figure 7 It can be seen that when the methanethiol removal rate reaches 90% or higher, the discharge power needs to reach 5W or higher. Figure 8 It is known that, with a catalyst module, the discharge power cannot exceed 7W, otherwise the ozone increase will exceed 50ppb (National Standard GB 21551.6-2010 "Special Requirements for Air Conditioners with Antibacterial, Sterilizing and Purifying Functions for Household and Similar Uses", which stipulates that the ozone at the air outlet should not exceed 0.10mg / m³). 3 (i.e., 50 ppb); without a catalyst module, the discharge power cannot exceed 2W, otherwise the ozone increase will exceed 50 ppb.

[0054] Therefore, the discharge power of the first discharge component is in the range of 5W to 7W, such as 5W, 6W, 7W, etc. Figure 6It can be seen that when the discharge power of the first discharge component is in the range of 5W to 7W, the distance between the first discharge component and the air inlet end face 311 of the air inlet side 31 of the catalyst module is in the range of 0.8mm to 1.2mm, such as 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, etc.

[0055] The discharge power of the second discharge component is less than or equal to 2W, such as 1W, 2W, etc. Figure 6 It can be seen that when the discharge power of the second discharge component is less than or equal to 2W, the distance between the second discharge component and the air outlet end face of the catalyst module is in the range of 2mm to 4mm, such as 2mm, 3mm, 4mm, etc.

[0056] Of course, the discharge power of the first discharge component is not limited to the above range and can be adjusted as needed. The distance between the first discharge component and the air inlet end face 311 of the air inlet side 31 of the catalyst module is also not limited to the above range and can be adjusted as needed.

[0057] Similarly, the discharge power of the second discharge component is not limited to the above range and can be adjusted as needed. The distance between the second discharge component and the air outlet face of the catalyst module is also not limited to the above range and can be adjusted as needed.

[0058] In addition, when the air purification device is used in an air conditioner, the distance between the first discharge component, the second discharge component and the indoor heat exchanger (grounded) should be greater than the discharge distance between the first discharge component and the second discharge component, so as to prevent the discharge electrode from discharging into the indoor heat exchanger.

[0059] In some exemplary embodiments, the air purification device includes a nonthermal plasma generator and an insulating honeycomb structure 3 loaded with a catalyst. The nonthermal plasma generator includes a first discharge component and a second discharge component, and the catalyst module includes the insulating honeycomb structure 3 loaded with a catalyst.

[0060] The working principle of a non-thermal plasma generator is to create an asymmetric plasma electric field through high-voltage, high-frequency pulsed discharge. This causes a large number of plasma particles in the air to collide in stages, generating electrochemical reactions that rapidly degrade toxic and harmful gases, as well as live viruses and bacteria. The non-thermal plasma generator can effectively decompose volatile organic compounds (VOCs), while the catalyst can eliminate byproducts such as ozone and carbon monoxide produced by the generator. The catalyst can also improve the mineralization rate of pollutants, preventing secondary pollution. Therefore, by combining the non-thermal plasma generator with an insulating honeycomb structure 3 loaded with a catalyst, the active substances (such as high-energy active particles and secondary active particles) generated by the first discharge component of the non-thermal plasma generator can be fully utilized, effectively maximizing the purification effect of the air purification device and eliminating byproducts such as ozone, thus preventing secondary pollution.

[0061] Of course, the catalyst support is not limited to the insulating honeycomb structure 3, but can also be other shapes of support, as long as it can support the catalyst and has gas passage.

[0062] In some exemplary embodiments, such as Figures 1 to 3 As shown, both the first discharge assembly and the second discharge assembly include a plurality of electrodes spaced apart along a first direction, which is parallel to the air inlet end face 311 of the insulating honeycomb structure 3.

[0063] like Figures 1 to 3 As shown, the plurality of electrodes include a discharge electrode 1 and a counter electrode 2, and each discharge electrode 1 is arranged adjacent to at least one counter electrode 2 along a first direction, and each counter electrode 2 is arranged adjacent to at least one discharge electrode 1 along the first direction.

[0064] In other words, for the first discharge component, the discharge electrode 1 and the counter electrode 2 can have a one-to-one relationship, or a one-to-many or many-to-one relationship. Similarly, for the second discharge component, the discharge electrode 1 and the counter electrode 2 can have a one-to-one relationship, or a one-to-many or many-to-one relationship.

[0065] In some embodiments, the non-thermal plasma generator further includes a power supply module. The high-voltage terminal of the power supply module is configured to be electrically connected to all discharge electrodes 1, and the low-voltage terminal or ground terminal of the power supply module is configured to be electrically connected to all counter electrodes 2. The power supply module can be, but is not limited to, a DC high-voltage power supply. The voltage output by the DC high-voltage power supply to the discharge electrodes 1 can be a negative high voltage or a positive high voltage. The DC high-voltage power supply can be a pulsed DC high-voltage power supply.

[0066] In this scheme, the first discharge component and the second discharge component are powered by the same power supply module, which helps to reduce the number of power supplies and simplify the circuit layout.

[0067] A switch can be installed between the first discharge component and the power supply module, and a switch can also be installed between the second discharge component and the power supply module, so that the first discharge component and the second discharge component can be turned on selectively or together.

[0068] In other embodiments, the non-thermal plasma generator further includes a first power supply module and a second power supply module. The high-voltage terminal of the first power supply module is electrically connected to the discharge electrode 1 of the first discharge component, and the low-voltage terminal or ground terminal of the first power supply module is electrically connected to the counter electrode 2 of the first discharge component. The high-voltage terminal of the second power supply module is electrically connected to the discharge electrode 1 of the second discharge component, and the low-voltage terminal or ground terminal of the second power supply module is electrically connected to the counter electrode 2 of the second discharge component.

[0069] The first power supply module and the second power supply module can be, but are not limited to, DC high-voltage power supplies. The voltage output by the DC high-voltage power supply to the discharge electrode 1 can be either negative high voltage or positive high voltage. The DC high-voltage power supply can be a pulsed DC high-voltage power supply.

[0070] In this way, the first discharge component and the second discharge component can be reasonably selected according to the excitation voltage, output power, etc., and it is also convenient to turn them on one or together as needed.

[0071] The first discharge component and the second discharge component are configured to be able to be turned on individually or together, which can enrich the working modes of the air purifier, make it easier for users to select the appropriate purification mode according to their needs, help avoid energy waste, and improve the user experience.

[0072] For example: when the first space requires purification but the second space does not, only the first discharge component can be activated, while the second discharge component remains off. Conversely, when the first space does not require purification but the second space does, only the second discharge component can be activated, while the first discharge component remains off. Both the first and second discharge components should only be activated when both require purification. Furthermore, when the first space requires purification, one can choose to activate only the first discharge component; alternatively, one can activate both components simultaneously to improve purification efficiency; this mode can be called the "powerful mode." Activating only the first discharge component is called the "normal mode."

[0073] In some exemplary embodiments, such as Figure 1 As shown, the discharge electrode 1 includes an electrode substrate 11 and a discharge section 12, with the discharge section 12 disposed on the electrode substrate 11 and facing the counter electrode 2.

[0074] Specifically, the discharge electrode 1 includes an electrode substrate 11 and a discharge section 12, with the discharge section 12 facing the counter electrode 2, so that after the non-thermal plasma generator is powered on, a discharge phenomenon can be generated between the discharge section 12 of the discharge electrode 1 and the counter electrode 2, so that the generated high-energy active particles can work synergistically with the catalyst to purify the air.

[0075] In some embodiments, a counter electrode 2 is provided on one side of the discharge electrode 1, and a discharge portion 12 is provided on the side of the electrode substrate 11 facing the counter electrode 2. This design simplifies the structure of the discharge electrode 1 and reduces its processing cost.

[0076] Or, such as Figure 1 As shown, counter electrodes 2 are provided on both sides of the discharge electrode 1, and discharge portions 12 are provided on both sides of the electrode substrate 11. This design is beneficial for increasing discharge power and improving the space utilization of the air purification device.

[0077] In some embodiments, such as Figure 1 As shown, both the electrode substrate 11 and the counter electrode 2 are rod-shaped or strip-shaped, and their length directions are parallel. The cross-sections of the electrode substrate 11 and the counter electrode 2 can be circular or rectangular, etc.

[0078] Among them, such as Figure 1 As shown, the discharge section 12 is serrated and includes a plurality of serrations 121 arranged sequentially along the length of the electrode substrate 11. The radius of curvature of the outer surface of the electrode 2 is greater than the radius of curvature of the tip of the serration 121. The serrated discharge section 12 may be provided on both sides of the electrode substrate 11, or the serrated discharge section 12 may be provided only on one side of the electrode substrate 11.

[0079] Or, such as Figure 2 As shown, the discharge section 12 includes a plurality of discharge wires 122 arranged sequentially along the length of the electrode substrate 11, and the radius of curvature of the outer surface of the electrode 2 is greater than the radius of curvature of the outer surface of the discharge wires 122. The cross-section of the discharge wires 122 may be circular or other shapes.

[0080] In the discharge electrode 1, multiple serrated or filamentous discharge portions 12 are distributed along the length of the electrode substrate 11 at intervals. This can increase the ionization efficiency of air, increase the concentration of the generated active substances, and make the spatial distribution of the generated active substances more uniform, so as to better purify the air and remove odors.

[0081] The electrode substrate 11 and the counter electrode 2 are arranged parallel to each other along their length. Multiple serrations 121 or multiple discharge wires 122 disposed on the electrode substrate 11 can be arranged along the extension direction of the electrode substrate 11, and the multiple serrations 121 or multiple discharge wires 122 are all facing the counter electrode 2, so as to improve the discharge efficiency between the discharge electrode 1 and the counter electrode 2, thereby increasing the ionization efficiency of the air and the concentration of the generated high-energy active particles, making the spatial distribution of the generated high-energy active particles more uniform, so as to better purify the air and remove odors.

[0082] The counter electrode 2 is configured in the shape of a rod or strip, while the discharge part 12 of the discharge electrode 1 is configured in the shape of a sawtooth or a filament, so that the radius of curvature of the tip of the sawtooth 121 or the outer surface of the discharge filament 122 is smaller than the radius of curvature of the outer surface of the counter electrode 2. The greater the difference between the radius of curvature of the tip of the sawtooth 121 or the outer surface of the discharge filament 122 and the radius of curvature of the outer surface of the counter electrode 2, the lower the voltage required to excite the discharge, and the more intense the discharge under the same voltage.

[0083] It is understandable that the discharge section 12 is not limited to the sawtooth 121 and the discharge wire 122, and can also be configured as other structures with a small radius of curvature, such as needle-shaped, wolf-tooth-shaped, etc.

[0084] In other exemplary embodiments, such as Figure 3 As shown, the discharge electrode 1 includes an electrode wire 13, and the counter electrode 2 is rod-shaped or strip-shaped, with the radius of curvature of the outer surface of the counter electrode 2 being greater than the radius of curvature of the outer surface of the electrode wire 13. The cross-section of the counter electrode 2 can be circular or rectangular, and the cross-section of the electrode wire 13 can be circular or other shapes.

[0085] Specifically, the discharge electrode 1 is configured as an electrode wire 13 with a small radius of curvature on its outer surface. The counter electrode 2 is configured as a rod or strip with a large radius of curvature on its outer surface. Thus, the radius of curvature of the counter electrode 2 is much larger than that of the discharge electrode 1. The smaller radius of curvature of the electrode wire 13 of the discharge electrode 1 results in a lower voltage required to excite the discharge electrode 1, making it easier to generate more high-energy active particles. Therefore, this configuration is beneficial for the non-thermal plasma generator to be excited and discharge, producing more high-energy active particles. Furthermore, the electrode wire 13 occupies less space, has low flow resistance, and facilitates airflow.

[0086] In some embodiments, such as Figure 3 As shown, the length directions of electrode wire 13 and counter electrode 2 are parallel, and electrode wire 13 and counter electrode 2 are alternately arranged.

[0087] Specifically, the electrode wire 13 and the counter electrode 2 are arranged parallel to each other along their lengths to ensure that the non-thermal plasma generator has a good discharge effect and produces more high-energy active particles. The electrode wire 13 and the counter electrode 2 are arranged alternately to enable the non-thermal plasma generator to produce more high-energy active particles within a limited space, and the generated active particles are more evenly distributed in space, allowing them to more fully and evenly contact the catalyst loaded on the insulating honeycomb structure 3 for synergistic effect.

[0088] In some exemplary embodiments, the discharge electrode 1 and the counter electrode 2 are made of metal and have a surface coating material.

[0089] Specifically, a modifying material is provided on the metal material surface of the discharge electrode 1 and the counter electrode 2 to improve the conductivity of the discharge electrode 1 and the counter electrode 2, thereby improving the discharge efficiency of the non-thermal plasma generator of this application.

[0090] In some embodiments, the metals used for the discharge electrode 1 and the counter electrode 2 include one or more of stainless steel, copper, titanium, tungsten, and nickel. The modifying materials include one or more of noble metals, carbon nanotubes, and graphene. Among these, noble metals include one or more of silver, platinum, palladium, ruthenium, rhodium, and gold.

[0091] Specifically, appropriate metals and decorative materials can be selected based on the specific type of pollutants that the air purification device needs to purify, its operating parameters, and its own cost.

[0092] In some exemplary embodiments, the catalyst includes one or more of the following: hydrotalcite, molecular sieves modified with transition metals and / or noble metals, and alumina modified with transition metals and / or noble metals. The transition metals include one or more of manganese, cerium, iron, copper, nickel, and lanthanum, while the noble metals include one or more of silver, platinum, palladium, ruthenium, rhodium, and gold. The appropriate transition metals and / or noble metals can be selected and set according to the operating parameters of the air purification device.

[0093] Specifically, hydrotalcite can serve as an alkaline catalyst, a redox catalyst, and a catalyst support. Hydrotalcite also possesses ion exchange and adsorption properties; therefore, it can be selected as the catalyst supported on the insulating honeycomb structure 3. Since transition metals and / or noble metals can undergo catalytic and cross-coupling reactions with organic compounds, configuring the catalyst of the insulating honeycomb structure 3 as a transition metal and / or noble metal-modified molecular sieve or a transition metal and / or noble metal-modified alumina can improve the efficiency of the air purification device in this application in degrading and decomposing VOCs and removing odors.

[0094] The appropriate catalyst can be selected based on the specific type of pollutants that the air purifier needs to purify, the operating parameters of the air purifier, the type of byproducts generated by the non-thermal plasma generator, and the cost of the air purifier itself.

[0095] It is worth noting that the dielectric constant and conductivity of the catalyst-loaded insulating honeycomb structure 3 have changed, and the power supply parameters for the non-thermal plasma generator need to be adjusted accordingly to adapt them.

[0096] In some exemplary embodiments, the insulating honeycomb structure 3 is a ceramic honeycomb structure, a glass fiber honeycomb structure, an alumina honeycomb structure, a fiberglass honeycomb structure, or a polymer honeycomb structure that meets the preset fire resistance requirements.

[0097] Since excitation discharge is required between discharge electrode 1 and counter electrode 2, the polymer honeycomb structure must meet the preset fire resistance requirements. For example, the fire resistance rating of the polymer honeycomb structure can reach VA level, and the material can be ABS (acrylonitrile-butadiene-styrene terpolymer) plastic, ABS / PVC (polyvinyl chloride) blend, or other plastics. Because the insulating honeycomb structures 3 made of different materials have different dielectric constants, the power supply parameters for the non-thermal plasma generator need to be adjusted accordingly.

[0098] This application also provides an air handling device, including an air purification device as described in any of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0099] There are no restrictions on the types of air handling equipment, such as air conditioners, air purifiers, sterilizers, humidifiers, dehumidifiers, and other devices with air handling functions. Air purification devices can be installed at the air inlet of the air handling equipment.

[0100] In some exemplary embodiments, the air purification device includes a duct and a fan, with the air purification unit located at the inlet of the duct. The internal space of the air purification device forms a second space, and the external space of the air purification device forms a first space. The fan is configured to drive gas from the inlet of the duct to the outlet of the duct, and to flow in the direction from the first discharge component to the catalyst module.

[0101] When the air purifier is working, the fan starts, and the air in the first space (i.e., the indoor space) flows from the inlet to the outlet of the duct. For the first purification module, the gas flows from the first discharge component to the catalyst module. The active material generated by the discharge of the first discharge component works synergistically with the catalyst to purify and deodorize the gas in the first space. For the second purification module, the active material generated by the second discharge component can be directly blown into the internal space of the air handling unit (i.e., the second space) to purify and deodorize the internal space. The purified and deodorized gas is then discharged into the indoor space through the outlet of the duct.

[0102] In some exemplary embodiments, the fan is configured such that the airflow generated during operation passes through the air purification device at a speed of 0.5 m / s to 3 m / s.

[0103] The higher the airflow velocity through the air purifier, the shorter the residence time of pollutants in the air, and the less easily pollutants such as volatile organic compounds are decomposed and purified. Conversely, a lower airflow velocity fails to meet the cooling / heating requirements of air conditioners and results in fewer air circulation cycles and longer purification times. Therefore, an airflow velocity of 0.5 m / s to 3 m / s is preferable, balancing purification effectiveness with the required purification time.

[0104] This application also provides a control method for the air handling equipment described in any of the above embodiments, such as... Figure 4 As shown, the control methods include:

[0105] Step S202: Determine the target purification mode, which includes a first purification mode and a second purification mode;

[0106] Step S204: Based on the target purification mode being the first purification mode, control the first discharge component to turn on in order to purify the first space;

[0107] Step S206: Based on the target purification mode being the second purification mode, control the second discharge component to turn on and the first discharge component to turn off, so as to purify the second space.

[0108] Thus, when the first space requires purification, the first purification mode can be selected, using the synergistic effect of the first discharge component and the catalyst module to purify the first space. When the second space requires purification, the second purification mode can be selected, using the second discharge component to purify the second space.

[0109] The first space can be an indoor space, so the first purification mode is used for indoor space purification; therefore, the first purification mode can also be called the space purification mode. The second space can be the internal space of the air handling unit; the second purification mode is mainly used for internal unit purification; therefore, the second purification mode can also be called the unit purification mode.

[0110] The method for determining the target purification mode is unrestricted. It can be determined based on external commands, such as receiving a mode command from the user via remote control, device panel, or mobile terminal (e.g., a mobile phone, smartwatch app), and then determining the corresponding target purification mode. Alternatively, it can automatically select the appropriate mode based on the air quality of the first and second spaces, where air quality can be determined based on pollutant concentration, microbial concentration, odor concentration, etc.

[0111] In some exemplary embodiments, such as Figure 5 As shown, the first purification mode includes a first sub-mode and a second sub-mode. Based on the target purification mode being the first purification mode, the first discharge component is activated to purify the first space, including:

[0112] Based on the target purification mode being the first sub-mode, the first discharge component is activated, and the second discharge component is activated as well.

[0113] Based on the target purification mode being the second sub-mode, the first discharge component is turned on and the second discharge component is turned off.

[0114] In the first sub-mode, both the first and second discharge components are activated simultaneously, resulting in higher purification efficiency. This mode can be called the powerful mode, which also purifies the second space. In the second sub-mode, only the first discharge component is activated, resulting in moderate purification efficiency. This mode can be called the normal mode.

[0115] The first and second sub-modes can be listed alongside the second purification mode for users to choose from. Alternatively, the first and second purification modes can be listed side-by-side for users to choose from, while the first and second sub-modes can be further selected by the user after the first purification mode has been chosen.

[0116] In some exemplary embodiments, controlling the first discharge component to turn on includes: controlling the first discharge component to turn on at a first set output power.

[0117] Controlling the second discharge component to turn on includes: controlling the second discharge component to turn on with a second set output power, wherein the second set output power is less than the first set output power.

[0118] Since the first discharge component is mainly used in conjunction with the catalyst module to purify and deodorize the indoor space, and the second discharge component is mainly used to purify and deodorize the internal space of the air handling equipment, and the first space is significantly larger than the second space, the output power (also called discharge power) of the first discharge component needs to be greater than that of the second discharge component to ensure that enough active substances can be generated to meet the purification and deodorization needs of the first space.

[0119] On the other hand, the ozone and other byproducts generated by the first discharge component can be degraded by the catalyst module, so the adverse effects of ozone and other byproducts are relatively small, and therefore the discharge power can be relatively large. However, the second discharge component is located downstream of the catalyst module. If the discharge power is too large, the generated ozone and other byproducts cannot be treated by the catalyst module, resulting in a greater adverse effect. Therefore, the discharge power is appropriately smaller to reduce the adverse effects of ozone and other byproducts.

[0120] In some embodiments, the first set output power is in the range of 5W to 7W, and the second set output power is less than or equal to 2W.

[0121] In some exemplary embodiments, the air handling equipment further includes a fan, and the control method further includes:

[0122] Based on the target purification mode being the first purification mode, the fan is controlled to start and operate at the first air volume;

[0123] Based on the target purification mode being the second purification mode, the fan is controlled to start and operate at the second air volume.

[0124] In some embodiments, the second air volume is less than the first air volume.

[0125] The first air volume can be, but is not limited to, the maximum air volume of the fan, and the second air volume can be, but is not limited to, the minimum air volume of the fan, such as... Figure 5 As shown.

[0126] In the first purification mode, a large airflow is needed to thoroughly purify the indoor air. In the second purification mode, which mainly purifies the internal space of the machine, a smaller airflow is sufficient to disperse the active substances generated by the discharge throughout the machine.

[0127] In some exemplary embodiments, based on the activation of the second discharge component, the control method further includes:

[0128] Detect the ozone concentration in the designated area;

[0129] Based on the ozone concentration being greater than or equal to a set threshold, the second discharge component is controlled to shut down for a set time before restarting.

[0130] The set area can be the air outlet of the air conditioning unit or the area near the air outlet. The set duration can be, but is not limited to, 5 minutes. The set threshold can be, but is not limited to, 50 ppb.

[0131] Because the second discharge component is located downstream of the catalyst module, the ozone and other byproducts it produces cannot be eliminated by the catalyst module, resulting in significant adverse effects. Therefore, it is necessary to monitor whether the ozone concentration reaches the set threshold. If it is greater than or equal to the set threshold, the second discharge component must be shut down promptly to prevent the ozone concentration from continuously rising and affecting user health. After being shut down for a period of time, once the ozone concentration has decreased, the second discharge component can be restarted to continue operating.

[0132] Of course, the condition for restarting the second discharge component can also be determined based on changes in ozone concentration, rather than a set duration. For example, the second discharge component can be restarted when the ozone concentration drops to a set range.

[0133] In some exemplary embodiments, the control method further includes:

[0134] Based on the target purification mode being the first purification mode, the air purifier is controlled to run for a first set time and then shut down.

[0135] Based on the target purification mode being the second purification mode, the air purifier is controlled to run for a second set time and then shut down.

[0136] In other words, the first purification mode will automatically exit after running for a first set time, turning off the air purifier and fan. The second purification mode will automatically exit after running for a second set time, turning off the air purifier and fan.

[0137] Since the output power of the air purifier in the first purification mode is greater than that in the second purification mode, the second set duration is longer than the first set duration to ensure that the purification requirements of the second space are met.

[0138] Of course, the exit conditions for the first and second purification modes are not limited to the runtime. For example, they can also be determined based on air quality, automatically exiting when the air quality in the first / second space reaches the set requirements. The first and second purification modes can also exit in response to external commands, such as when the user selects to end the purification mode.

[0139] The first set duration can be greater than or not limited to 1 hour, and the second set duration can be greater than or not limited to 2 hours.

[0140] The experimental results of some embodiments are described below.

[0141] Example 1

[0142] The air handling unit is an air conditioner, and the air purification device is located at the air inlet of the air conditioner. The dimensions of the air purification device are 170mm*170mm*15mm. The discharge part 12 of the discharge electrode 1 is serrated and includes multiple serrations 121121 distributed along the length direction of the electrode base 11. The length of the electrode base 11 is 170mm, the height of the serrations 121121 (the dimension perpendicular to the length direction of the electrode base 11) is 8mm, the thickness of the discharge electrode 1 is 0.6mm, and the material is titanium. The counter electrode 22 has the same length as the discharge electrode 1, and is a stainless steel electrode that is 170mm long, 10mm wide, and 2mm thick. For the first discharge assembly, the discharge electrode 1 and the counter electrode 22 are arranged alternately along the first direction, with a total of five, such as... Figure 1 As shown, the distance between discharge electrode 1 and counter electrode 22 is 1 mm. For the second discharge assembly, discharge electrode 1 and counter electrode 22 are arranged alternately along the first direction, with a total of five, and the distance between discharge electrode 1 and counter electrode 22 is 3 mm. The insulating honeycomb structure 3 is a ceramic honeycomb structure coated with Mn, Ce, and Fe modified ZSM-5 molecular sieve. Only the first discharge assembly is powered, with an applied voltage of 6 kV, a discharge power of 6 W, and a wind speed of 1.5 m / s. During the test, the distance was 30 m. 3 The test was conducted in a standard warehouse, and the odor was identified as methanethiol. The measured removal rate was 95% after 60 minutes.

[0143] Example 2

[0144] The difference from Example 1 is that only the second discharge component is powered, with an applied voltage of 6kV, a discharge power of 1.5W, and a wind speed of 1.5m / s. Bacterial plates are placed on the evaporator and the inner side of the front panel of the indoor air conditioner unit. After 60 minutes of treatment, the surface sterilization efficiency is 99%.

[0145] Example 3

[0146] The difference from Embodiment 1 is that high-voltage electricity is applied to both the first and second discharge components simultaneously, achieving both indoor space purification and in-machine purification effects at the same time. During testing, the temperature was at 30m. 3 The test was conducted in a standard warehouse, and the measured removal rate of methanethiol was 99% after 60 minutes. A separate sterilization experiment was also performed at 30m... 3 In a standard warehouse, the sterilization rate of Staphylococcus aureus within 120 minutes is 99%. When bacterial strips are placed on the evaporator and the inside of the front panel of the air conditioner indoor unit, the surface sterilization efficiency is 99% after 60 minutes of treatment.

[0147] Therefore, it can be seen that the air purification device provided in this application embodiment can achieve a good purification effect on the first space when the first discharge component works alone (i.e., the second sub-mode); can achieve a good purification effect on the second space when the second discharge component works alone (i.e., the second purification mode); and can achieve a good purification effect on both the first space and the second space when the first discharge component and the second discharge component work together (i.e., the first sub-mode).

[0148] This application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, it implements the steps of the control method as described in any of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0149] The processor may be an integrated circuit chip with signal processing capabilities. The aforementioned processor can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), an On-Premises Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor.

[0150] This application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the steps of the control method described in any of the above embodiments.

[0151] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0152] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0153] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0154] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0155] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0156] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0157] In any one or more of the exemplary embodiments described above, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored as one or more instructions or code on or transmitted via a computer-readable medium and executed by a hardware-based processing unit. The computer-readable medium may comprise a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium comprising any medium facilitating the transfer of a computer program from one place to another, for example, according to a communication protocol. In this manner, a computer-readable medium may generally correspond to a non-transitory tangible computer-readable storage medium or a communication medium such as a signal or carrier wave. The data storage medium may be any available medium accessible by one or more computers or one or more processors to retrieve instructions, code, and / or data structures for implementing the techniques described in this disclosure. Computer program products may comprise computer-readable media.

[0158] For example, and not as a limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible by a computer. Furthermore, any connection may also be referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but rather refer to non-transient tangible storage media. As used herein, disks and optical discs include compact optical discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, or Blu-ray discs, where disks typically reproduce data magnetically, while optical discs use lasers to reproduce data optically. The above combinations should also be included within the scope of computer-readable media.

[0159] For example, instructions can be executed by one or more processors, such as one or more digital signal processors (DSPs), general-purpose microprocessors, application-specific integrated circuits (ASICs), field-programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Therefore, the term "processor" as used herein can refer to any of the above-described structures or any other structures suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated into combined codecs. Furthermore, the techniques can be fully implemented in one or more circuit or logic elements.

[0160] The technical solutions of the embodiments of this disclosure can be implemented in a wide variety of devices or equipment, including wireless mobile phones, integrated circuits (ICs), or a set of ICs (e.g., chipsets). Various components, modules, or units are described in the embodiments of this disclosure to emphasize functional aspects of a device configured to perform the described techniques, but they do not necessarily need to be implemented through different hardware units. Rather, as described above, the various units can be combined in codec hardware units or provided by a collection of interoperable hardware units (including one or more processors as described above) combined with suitable software and / or firmware.

Claims

1. An air purification device, characterized in that, It is equipped with a first discharge component, a catalyst module, and a second discharge component; the catalyst module is provided with a gas passage. Along the gas passage direction, the catalyst module is located downstream of the first discharge component and is configured to work synergistically with the active material generated by the discharge of the first discharge component to purify the first space. Along the gas flow direction of the gas flow channel, the second discharge component is located downstream of the catalyst module and is configured to discharge and generate active substances to purify the second space.

2. The air purification device according to claim 1, characterized in that, The discharge power of the first discharge component is greater than the discharge power of the second discharge component; and / or The discharge spacing of the first discharge component and the discharge spacing of the second discharge component are both smaller than the distance between the first discharge component and the second discharge component along the gas passage direction.

3. The air purification device according to claim 1, characterized in that, The discharge power of the first discharge component is in the range of 5W to 7W, and the distance between the first discharge component and the air inlet end face of the catalyst module is in the range of 0.8mm to 1.2mm; and / or The discharge power of the second discharge component is less than or equal to 2W, and the distance between the second discharge component and the air outlet end face of the catalyst module is in the range of 2mm to 4mm.

4. The air purification device according to any one of claims 1 to 3, characterized in that, The air purification device includes a non-thermal plasma generator and an insulating honeycomb structure loaded with a catalyst; the non-thermal plasma generator includes a first discharge component and a second discharge component, and the catalyst module includes the insulating honeycomb structure loaded with the catalyst.

5. The air purification device according to claim 4, characterized in that, Both the first discharge assembly and the second discharge assembly include a plurality of electrodes spaced apart along a first direction, which is parallel to the air inlet end face of the insulating honeycomb structure. The plurality of electrodes includes a discharge electrode and a counter electrode, wherein each discharge electrode is disposed adjacent to at least one counter electrode along the first direction and each counter electrode is disposed adjacent to at least one discharge electrode along the first direction.

6. The air purification device according to claim 5, characterized in that, The non-thermal plasma generator further includes a power supply module, wherein the high-voltage terminal of the power supply module is configured to be electrically connected to all the discharge electrodes, and the low-voltage terminal or ground terminal of the power supply module is configured to be electrically connected to all the counter electrodes; or The non-thermal plasma generator further includes a first power supply module and a second power supply module. The high-voltage terminal of the first power supply module is electrically connected to the discharge electrode of the first discharge component, and the low-voltage terminal or ground terminal of the first power supply module is electrically connected to the counter electrode of the first discharge component. The high-voltage terminal of the second power supply module is electrically connected to the discharge electrode of the second discharge component, and the low-voltage terminal or ground terminal of the second power supply module is electrically connected to the counter electrode of the second discharge component.

7. The air purification device according to claim 5, characterized in that, The discharge electrode includes an electrode substrate and a discharge portion, wherein the discharge portion is disposed on the electrode substrate and faces the counter electrode; The discharge electrode has a counter electrode on one side, and the electrode substrate has a discharge portion on the side facing the counter electrode; or, the discharge electrode has a counter electrode on both opposite sides, and the electrode substrate has a discharge portion on both opposite sides.

8. The air purification device according to claim 5, characterized in that, The discharge electrode includes an electrode wire, the counter electrode is rod-shaped or strip-shaped, and the radius of curvature of the outer surface of the counter electrode is greater than the radius of curvature of the outer surface of the electrode wire; the length directions of the electrode wire and the counter electrode are parallel, and the electrode wire and the counter electrode are alternately arranged.

9. The air purification device according to claim 5, characterized in that, The discharge electrode and the counter electrode are made of metal and have a decorative material on their surfaces; The metals used for the discharge electrode and the counter electrode include one or more of stainless steel, copper, titanium, tungsten, and nickel; the modifying material includes one or more of noble metals, carbon nanotubes, and graphene.

10. The air purification device according to claim 5, characterized in that, The catalyst comprises any one or more of the following: hydrotalcite; molecular sieve modified with transition metals and / or noble metals; alumina modified with transition metals and / or noble metals; and / or The insulating honeycomb structure is a ceramic honeycomb structure, a glass fiber honeycomb structure, an alumina honeycomb structure, a fiberglass honeycomb structure, or a polymer honeycomb structure.

11. An air purification device, characterized in that, Includes the air purification device as described in any one of claims 1 to 10.

12. The air purification device according to claim 11, characterized in that, The air purification equipment is equipped with an air duct and a fan, and the air purification device is located at the entrance of the air duct; the internal space of the air purification equipment forms the second space, and the external space of the air purification equipment forms the first space; The fan is configured to drive gas from the inlet of the duct to the outlet of the duct, and to flow in the direction from the first discharge component to the catalyst module.

13. A control method, characterized in that, For use in the air purification device as described in claim 11 or 12, the control method includes: Determine the target purification mode, which includes a first purification mode and a second purification mode; Based on the target purification mode being the first purification mode, the first discharge component is controlled to be turned on in order to purify the first space; Based on the target purification mode being the second purification mode, the second discharge component is turned on and the first discharge component is turned off to purify the second space.

14. The control method according to claim 13, characterized in that, The first purification mode includes a first sub-mode and a second sub-mode; the step of controlling the first discharge component to turn on based on the target purification mode being the first purification mode, in order to purify the first space, includes: Based on the target purification mode being the first sub-mode, the first discharge component is controlled to turn on, and the second discharge component is also controlled to turn on; Based on the target purification mode being the second sub-mode, the first discharge component is turned on and the second discharge component is turned off.

15. The control method according to claim 13 or 14, characterized in that, The air handling equipment further includes a fan, and the control method further includes: Based on the target purification mode being the first purification mode, the fan is controlled to start and operate at the first air volume; Based on the target purification mode being the second purification mode, the fan is controlled to start and operate at a second air volume, which is less than the first air volume.

16. The control method according to claim 13 or 14, characterized in that, The control of the first discharge component to turn on includes: controlling the first discharge component to turn on with a first set output power; The control of the second discharge component to turn on includes: controlling the second discharge component to turn on at a second set output power, wherein the second set output power is less than the first set output power.

17. The control method according to claim 13 or 14, characterized in that, Based on the activation of the second discharge component, the control method further includes: Detect the ozone concentration in the designated area; Based on the ozone concentration being greater than or equal to a set threshold, the second discharge component is controlled to be turned off for a set time before being restarted.

18. The control method according to claim 13 or 14, characterized in that, Also includes: Based on the target purification mode being the first purification mode, the air purification device is controlled to run for a first set time and then shut down. Based on the target purification mode being the second purification mode, the air purification device is controlled to run for a second set time and then shut down, wherein the second set time is longer than the first set time.

19. A control device, characterized in that, It includes a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the steps of the control method as described in any one of claims 13 to 18.

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