Dust collection device and air treatment equipment

Abstract

According to the dust collection device and the air treatment equipment provided by the invention, the electrode module is coated with the modified insulating film, so that the dust collection performance of the dust collection device is improved. The dust collecting device comprises a frame, a first electrode module and a second electrode module, the first electrode module is connected with the high-voltage end of the power supply module, and the second electrode module is connected with the low-voltage end or the grounding end of the power supply module; an electrode main body of the first electrode module comprises a plurality of first electrode plates which are arranged at intervals, an electrode main body of the second electrode module comprises a plurality of second electrode plates which are arranged at intervals, and the plurality of second electrode plates and the plurality of first electrode plates are arranged at intervals in a staggered manner; the outer surface of the first electrode plate is coated with a first insulating film, the outer surface of the second electrode plate is coated with a second insulating film, both the first insulating film and the second insulating film are modified insulating films subjected to modification treatment, and the modification treatment comprises at least one of electret modification treatment, surface roughening treatment and electronegativity treatment.

Description

Technical Field

[0001] This application relates to, but is not limited to, the field of air purification technology, specifically to a dust collection device and an air handling equipment. Background Technology

[0002] Dust filtration technology is used to remove various dust particles from the air. Common dust filtration technologies include mechanical filtration, electrostatic filtration, wet filtration, molecular adsorption, centrifugal separation, nanotechnology filtration, and filter bags. Among these, electrostatic dust collection technology has attracted much attention due to its high efficiency, lack of consumables, and ease of maintenance. How to further improve the performance of dust collection devices is a direction that those skilled in the art have been continuously striving for. Summary of the Invention

[0003] The technical problem to be solved by this application is to provide a dust collection device and an air treatment equipment, which improves the dust collection performance of the dust collection device by covering the electrode module with a modified insulating film.

[0004] Therefore, this application provides a dust collection device, including: a frame and a first electrode module and a second electrode module installed on the frame. The first electrode module is configured to connect to the high-voltage end of a power supply module, and the second electrode module is configured to connect to the low-voltage end or ground end of the power supply module. Both the first electrode module and the second electrode module include an electrode body. The electrode body of the first electrode module includes a plurality of spaced-apart first electrode plates, and the electrode body of the second electrode module includes a plurality of spaced-apart second electrode plates. The plurality of second electrode plates and the plurality of first electrode plates are staggered and spaced apart, so that a dust collection electric field can be formed between adjacent first electrode plates and second electrode plates. The outer surface of the first electrode plates is covered with a first insulating film, and the outer surface of the second electrode plates is covered with a second insulating film. Both the first insulating film and the second insulating film are modified insulating films that have undergone modification treatment. The modification treatment includes at least one of the following: electret modification treatment, surface roughening treatment, and negative charge treatment. The electret modification treatment is configured to improve the energy storage capacity of the insulating film, the surface roughening treatment is configured to improve the specific surface area of ​​the insulating film, and the negative charge treatment is configured to improve the triboelectric charging capacity of the insulating film.

[0005] Covering the first and second electrode plates with an insulating film helps prevent the high-voltage module from conducting electricity through contact with external substances (such as the human body), thus avoiding safety accidents. Furthermore, it prevents the first and second electrode plates from contacting air, preventing air ionization and thus eliminating ozone generation, arcing, and unpleasant electrical noise. The dust-collecting electric field utilizes electrostatic dust collection technology to adsorb solid pollutants such as dust, allergens, and bacteria from the air onto the second electrode plate, achieving the dust collection function.

[0006] Electret modification can enhance the electrical storage capacity of the insulating film, enabling the dust collection device to not only continuously ensure the storage capacity of the input high voltage during electrostatic dust collection, but also to store the electrical charge generated by the friction between charged dust (or other solid pollutants) and the surface of the insulating film. This is beneficial to increasing the dust collection voltage, thereby improving the cumulative purification capacity of the dust collection device.

[0007] Surface roughening treatment can increase the specific surface area of ​​the insulating membrane, which enhances the ability of charged dust (or other solid pollutants) to generate electricity through friction with the membrane surface, reducing voltage loss caused by charge neutralization. It also increases the electric field adsorption area, thus improving adsorption and filtration performance. Furthermore, in traditional dust collection devices, under high humidity conditions, water droplets easily accumulate on the electrode plate surface, forming a water film that affects the electric field strength and the charging effect of solid pollutants, impairing the purification performance of the dust collection device. This solution, by roughening the insulating membrane surface, creates a lotus leaf effect, making it difficult for water droplets to accumulate and form a water film, thus avoiding the adverse effects of water film on the dust collection device under high humidity conditions. Therefore, surface roughening treatment also improves the moisture resistance of the insulating membrane, reducing performance loss of the dust collection device in high humidity environments.

[0008] Negative charge treatment can also enhance the triboelectric ability of the insulating film, thereby reducing voltage loss caused by charge neutralization from charged dust (or other solid pollutants), which is beneficial to improving adsorption and filtration performance.

[0009] Therefore, the dust collection device provided in this application embodiment improves the dust collection performance by covering the electrode module with a modified insulating film.

[0010] This application also provides an air handling device, including a power supply module and a dust collection device as described in any of the above embodiments. The power supply module is electrically connected to the first electrode module and the second electrode module and is configured to supply power to the dust collection device. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a dust collection device provided in some embodiments of this application;

[0012] Figure 2 A schematic diagram of the assembly structure of the first electrode module and the second electrode module provided for some embodiments of this application;

[0013] Figure 3 A cross-sectional structural schematic diagram of the first electrode module provided in some embodiments of this application;

[0014] Figure 4This is a schematic diagram of the structure of the electrode body before bending after cutting, provided in some embodiments of this application;

[0015] Figure 5 for Figure 4 A schematic diagram of the electrode body after bending is shown.

[0016] Figure 6 for Figure 5 A three-dimensional structural diagram of the electrode body from another perspective;

[0017] Figure 7 A three-dimensional structural diagram of the assembled first electrode module and second electrode module provided for some embodiments of this application;

[0018] Figure 8 for Figure 7 A front view schematic diagram of the structure shown;

[0019] Figure 9 A cross-sectional view of the assembled first electrode module and second electrode module provided in some embodiments of this application;

[0020] Figure 10 This is a comparison graph of the CADR curves obtained from repeated tests of Example 3 and Comparative Example 1. The horizontal axis represents time, and the vertical axis represents the CADR value.

[0021] Figures 1 to 9 The list of components represented by each number is as follows:

[0022] 10 First electrode module, 11 First electrode sheet;

[0023] 20 Second electrode module, 21 Second electrode sheet;

[0024] 30 Electrode body, 31 First connecting piece, 32 Second connecting piece, 33 First transition section, 34 Second transition section, 35 Modified insulating film;

[0025] 40 frames;

[0026] 50 fixed cards. 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] like Figure 1 , Figure 2 and Figure 3As shown in the figure, this application provides a dust collection device, including: a frame 40 and a first electrode module 10 and a second electrode module 20 mounted on the frame 40. The first electrode module 10 is configured to connect to the high-voltage terminal of a power supply module (not shown in the figure), and the second electrode module 20 is configured to connect to the low-voltage terminal or ground terminal of the power supply module. The power supply module can be a DC power supply module. The voltage output from the high-voltage terminal of the power supply module can be negative high voltage, the voltage output from the low-voltage terminal can be positive high voltage (but the absolute value of the voltage is lower than the absolute value of the voltage output from the high-voltage terminal), and the voltage output from the ground terminal is 0. Therefore, the first electrode module 10 can be called a high-voltage module, and the second electrode module 20 can be called a low-voltage module (or ground module, hereinafter collectively referred to as low-voltage module). Both the first electrode module 10 and the second electrode module 20 include an electrode body 30, which is a conductor and can realize the function of energizing.

[0029] like Figure 2 , Figure 5 and Figure 6 As shown, the electrode body 30 of the first electrode module 10 includes a plurality of spaced-apart first electrode plates 11. The electrode body 30 of the second electrode module 20 includes a plurality of spaced-apart second electrode plates 21. The plurality of second electrode plates 21 and the plurality of first electrode plates 11 are arranged alternately and spaced apart, so that a dust-collecting electric field can be formed between adjacent first electrode plates 11 and second electrode plates 21.

[0030] like Figure 3 As shown, the outer surface of the first electrode sheet 11 is covered with a first insulating film. The outer surface of the second electrode sheet 21 is covered with a second insulating film. Both the first and second insulating films are modified insulating films 35 that have undergone modification treatment. The modification treatment includes at least one of the following: electret modification treatment, surface roughening treatment, and negative charge treatment. The electret modification treatment is configured to improve the energy storage capacity of the insulating film, the surface roughening treatment is configured to improve the specific surface area of ​​the insulating film, and the negative charge treatment is configured to improve the triboelectric charging capacity of the insulating film.

[0031] Covering the first electrode plate 11 and the second electrode plate 21 with an insulating film helps prevent the high-voltage module from contacting external substances (such as the human body) and conducting electricity, thus avoiding safety accidents. Furthermore, it prevents the first electrode plate 11 and the second electrode plate 21 from contacting air, which would cause air ionization, thereby preventing the generation of ozone, arcing, and unpleasant electrical noise. The dust collection electric field utilizes electrostatic dust collection technology to adsorb solid pollutants such as dust, allergens, and bacteria from the air onto the second electrode plate 21, achieving the dust collection function.

[0032] Electret modification can enhance the electrical storage capacity of the insulating film, enabling the dust collection device to not only continuously ensure the storage capacity of the input high voltage during electrostatic dust collection, but also to store the electrical charge generated by the friction between charged dust (or other solid pollutants) and the surface of the insulating film. This is beneficial to increasing the dust collection voltage, thereby improving the cumulative purification capacity of the dust collection device.

[0033] Surface roughening treatment can increase the specific surface area of ​​the insulating membrane, which enhances the ability of charged dust (or other solid pollutants) to generate electricity through friction with the membrane surface, reducing voltage loss caused by charge neutralization. It also increases the electric field adsorption area, thus improving adsorption and filtration performance. Furthermore, in traditional dust collection devices, under high humidity conditions, water droplets easily accumulate on the electrode plate surface, forming a water film that affects the electric field strength and the charging effect of solid pollutants, impairing the purification performance of the dust collection device. This solution, by roughening the insulating membrane surface, creates a lotus leaf effect, making it difficult for water droplets to accumulate and form a water film, thus avoiding the adverse effects of water film on the dust collection device under high humidity conditions. Therefore, surface roughening treatment also improves the moisture resistance of the insulating membrane, reducing performance loss of the dust collection device in high humidity environments.

[0034] Negative charge treatment can also enhance the triboelectric ability of the insulating film, thereby reducing voltage loss caused by charge neutralization from charged dust (or other solid pollutants), which is beneficial to improving adsorption and filtration performance.

[0035] Therefore, the dust collection device provided in this application embodiment improves the dust collection performance by covering the electrode module with a modified insulating film.

[0036] In some exemplary embodiments, the first electrode module 10 has the same charge as the solid contaminant, such as dust, and the second electrode module 20 has the opposite charge to the solid contaminant, such as dust. The first electrode module 10 provides a repulsive electrode, and the second electrode module 20 provides a collecting electrode. The solid contaminant, such as dust, is collected onto the second electrode plate 21 of the second electrode module 20.

[0037] In some exemplary embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the electrode body 30 also includes a first connecting piece 31 and a second connecting piece 32. The first connecting piece 31 or the second connecting piece 32 is configured to be electrically connected to the power supply module.

[0038] The two ends of the multiple first electrode pieces 11 are respectively connected to the first connecting piece 31 and the second connecting piece 32, so that the electrode body 30 of the first electrode module 10 forms an integral structure.

[0039] The two ends of the multiple second electrode pieces 21 are respectively connected to the first connecting piece 31 and the second connecting piece 32, so that the electrode body 30 of the second electrode module 20 forms an integral structure.

[0040] In this way, on the one hand, the first connecting piece 31 and the second connecting piece 32 can also be used to conduct electricity and guide the multiple first electrode pieces 11 and multiple second electrode pieces 21 connected thereto, which facilitates the connection of the electrode pieces to electricity; on the other hand, it helps to reduce the assembly difficulty between the first electrode module 10, the second electrode module 20 and the frame 40, thereby improving the assembly efficiency of the dust collection device. Furthermore, the integrated electrode body 30 has high conductivity, which helps to avoid voltage loss and local electric field loss, thus improving the electric field uniformity of the dust collection device, and improving the purification uniformity and purification efficiency.

[0041] In some exemplary embodiments, such as Figure 4 , Figure 5 and Figure 6 As shown, the electrode body 30 also includes a plurality of first transition sections 33 and a plurality of second transition sections 34.

[0042] One end of each of the multiple first electrode plates 11 is connected to the first connecting plate 31 through multiple first transition sections 33, and the other end of each of the multiple first electrode plates 11 is connected to the second connecting plate 32 through multiple second transition sections 34.

[0043] One end of each of the multiple second electrode plates 21 is connected to the first connecting plate 31 through multiple first transition sections 33, and the other end of each of the multiple second electrode plates 21 is connected to the second connecting plate 32 through multiple second transition sections 34.

[0044] The first transition section 33 is inclined relative to the first connecting piece 31, and the second transition section 34 is inclined relative to the second connecting piece 32.

[0045] Both the first connecting piece 31 and the second connecting piece 32 are at a certain angle to the first electrode piece 11, for example, from 10° to 90°. In some examples, both the first connecting piece 31 and the second connecting piece 32 are perpendicular to the first electrode piece 11, the first electrode piece 11 and the second electrode piece 21 are parallel to each other, and the first connecting piece 31 and the second connecting piece 32 are coplanar.

[0046] The first transition section 33 and the second transition section 34 can also be elongated sheet-like structures, such as rectangular or roughly rectangular sheet-like structures. The first connecting piece 31 and the second connecting piece 32 can also be elongated sheet-like structures, such as rectangular or roughly rectangular sheet-like structures. The first electrode piece 11 and the second electrode piece 21 can also be elongated sheet-like structures, such as rectangular or roughly rectangular sheet-like structures. The width of the first electrode piece 11 and the second electrode piece 21 can be greater than the width of the first connecting piece 31 and the second connecting piece 32, and also greater than the width of the first transition section 33 and the second transition section 34, to ensure a larger coverage area of ​​the dust collection electric field and achieve a highly efficient purification effect. The width of the first transition section 33 and the second transition section 34 can be greater than the width of the first connecting piece 31 and the second connecting piece 32 to improve the connection strength.

[0047] In some embodiments, the electrode body 30 is a metal conductor, such as a copper plate, galvanized plate, stainless steel plate, aluminum plate, etc. The electrode body 30 is configured as an integral structure formed by punching and bending the sheet conductor, and the first electrode sheet 11 and the second electrode sheet 21 are configured to be formed by bending after the sheet conductor is punched.

[0048] In other words, during the production process, the flat sheet conductor can be punched first to produce the first connecting piece 31, the second connecting piece 32, the first transition section 33, the second transition section 34, and the first electrode piece 11 (or the second electrode piece 21) before bending. Figure 4 As shown. At this time, the first connecting piece 31, the second connecting piece 32, the first transition section 33, the second transition section 34, and the first electrode piece 11 (or the second electrode piece 21) are located on the same plane. Then, the first electrode piece 11 (or the second electrode piece 21) is bent to obtain the electrode body 30, as shown. Figure 5 and Figure 6 As shown. After bending, the connection between the first electrode piece 11 (or the second electrode piece 21) and the first transition section 33 / second transition section 34 forms a rounded transition, as shown. Figure 6 , Figure 8 and Figure 9 As shown, the bending operation can also be achieved by rotating the first electrode plate 11 / second electrode plate 21, for example, by rotating 90°.

[0049] The punching operation for the sheet conductor can be performed by a punch press, while the bending operation can be performed by a machine tool. Therefore, the integrated electrode body 30 can achieve industrial automation, which helps to reduce production costs.

[0050] Because the first transition section 33 and the second transition section 34 are inclined, it facilitates the bending operation of the first electrode plate 11 (or the second electrode plate 21) and reduces the risk of local torsion causing unevenness on the surface of the electrode body 30 or affecting the structural strength. Furthermore, compared to solutions where the electrode body 30 only includes the first electrode plate 11 or the second electrode plate 21, in this solution, after the dust collection device is powered on, the first transition section 33, the second transition section 34, the first connecting piece 31, and the second connecting piece 32 also participate in forming an electric field. Thus, the first electrode module 10 has multiple semi-annular electrodes, and the second electrode module 20 also has multiple semi-annular electrodes. The first electrode module 10 and the second electrode module 20 are interleaved and interlocked, forming a high-voltage array ring that covers the entire frame 40. This helps avoid local high-voltage electric field defects and improves the purification performance of the dust collection device.

[0051] In some exemplary embodiments, a first insulating film is adhered to and covers the electrode body 30 of the first electrode module 10, and a second insulating film is adhered to and covers the electrode body 30 of the second electrode module 20.

[0052] In other words, in addition to the outer surfaces of the first electrode plate 11 and the second electrode plate 21, the outer surfaces of the first connecting piece 31, the second connecting piece 32, the first transition section 33, and the second transition section 34 are also covered with an insulating film, which effectively ensures the safety and reliability of the first electrode module 10 and the second electrode module 20.

[0053] The first connecting piece 31 or the second connecting piece 32 may be provided with a wiring portion, which may not be covered with a film and is used for electrical connection to the power supply module via a high-voltage line. The wiring portion may be bent or flush. Alternatively, the first connecting piece 31 and the second connecting piece 32 may be completely covered with a film, and a screw (or other conductive component) may be installed in the hole by drilling. The electrical contact between the screw and the inner wall of the hole will achieve the conductivity function, and the screw will then be used to electrically connect to the power supply module via a high-voltage line.

[0054] In some exemplary embodiments, the first and second insulating films are configured to be obtained after a coating operation is performed on the sheet conductor after punching and before bending, and after cutting off excess insulating film (or cutting off the insulating film covering the cutout portion between adjacent first electrode sheets 11 or adjacent second electrode sheets 11 before bending). The excess insulating film includes at least the insulating film located in the cutout portion between adjacent first electrode sheets 11 / adjacent second electrode sheets 11, and may also include a portion extending beyond the outer contour of the electrode body 30.

[0055] In other words, during the production process, the flat sheet conductor can be punched first to produce the first connecting piece 31, the second connecting piece 32, the first transition section 33, the second transition section 34, and the first electrode piece 11 (or the second electrode piece 21) before bending. Then, a film coating operation is performed on the electrode body 30, covering the outer surface of the electrode body 30 with a complete insulating film. At this time, the insulating film also covers the hollowed-out parts on the electrode body 30. Therefore, the excess insulating film needs to be cut off, leaving only the insulating film on the outer surface of the electrode body 30, while the hollowed-out parts and the parts that extend beyond the outer contour of the electrode body 30 are cut off (leaving only the part covering the edge of the first electrode piece 11), or the insulating film covering the hollowed-out parts between adjacent first electrode pieces 11 / adjacent second electrode pieces 21 before bending is cut off. Then, the first electrode piece 11 / second electrode piece 21 is bent to obtain the electrode body 30 of the first electrode module 10 / second electrode module 20.

[0056] The lamination operation can be performed by a laminating machine, and the film cutting operation can be performed by a stamping machine. This allows for industrial automation of the electrode body 30 and the lamination process, which helps reduce production costs. The insulating film may have an adhesive backing, and is glued to the electrode body 30 of the first electrode module 10 / second electrode module 20.

[0057] In some exemplary embodiments, such as Figure 7 , Figure 8 and Figure 9 As shown, the first electrode module 10 includes multiple electrode bodies 30. The first connecting pieces 31 and second connecting pieces 32 of the multiple electrode bodies 30 are stacked and arranged in a staggered manner, and the first electrode pieces 11 of the multiple electrode bodies 30 are arranged at intervals.

[0058] like Figure 7 , Figure 8 and Figure 9 As shown, the second electrode module 20 includes multiple electrode bodies 30. The first connecting pieces 31 and the second connecting pieces 32 of the multiple electrode bodies 30 are stacked and arranged in a staggered manner, and the second electrode pieces 21 of the multiple electrode bodies 30 are arranged at intervals.

[0059] The first electrode module 10 and the second electrode module 20 are interleaved and interlocked, such that all the first electrode pieces 11 of the first electrode module 10 and all the second electrode pieces 21 of the second electrode module 20 are alternately spaced.

[0060] For an integral electrode body 30 formed by first cutting and then bending, after bending, the distance between two adjacent electrode pieces (first electrode piece 11 / second electrode piece 21) of the same electrode body 30 is relatively large, exceeding the width of one electrode piece. This results in a lower electric field strength in the dust collection electric field, or requires the power supply module to apply a larger output voltage. However, by stacking and cross-arranging multiple electrode bodies 30 within the same electrode module, the distance between two adjacent electrode pieces of the same electrode module can be reduced, thereby reducing the distance between adjacent first electrode pieces 11 and second electrode pieces 21. This is beneficial for improving the electric field strength of the dust collection electric field and reducing the output voltage of the power supply module.

[0061] In this design, the number of electrode bodies 30 in the first electrode module 10 may be equal to or unequal to the number of electrode bodies 30 in the second electrode module 20. The dimensions (e.g., length, spacing, width, number of electrodes) of the multiple electrode bodies 30 in the first electrode module 30 may be equal or unequal. Similarly, the dimensions (e.g., length, spacing, width, number of electrodes) of the multiple electrode bodies 30 in the second electrode module 20 may be equal or unequal. For example: in Figure 8 In this configuration, the first electrode module 10 includes two electrode bodies 30, and the second electrode module 20 also includes two electrode bodies 30. Figure 9 In the first electrode module 10, there are three electrode bodies 30, and the second electrode module 20 also includes three electrode bodies 30.

[0062] The outer surfaces of the first connecting piece 31 and the second connecting piece 32 of the first electrode module 10 (or the second electrode module 20) may not be covered with an insulating film. When the first electrode module 10 (or the second electrode module 20) includes multiple electrode bodies 30, the multiple electrode bodies 30 can be staggered and stacked, the first electrode pieces 11 of the multiple electrode bodies 30 are arranged alternately, and the first connecting pieces 31 (or the second connecting pieces 32) of the multiple electrode bodies 30 can be attached to each other to achieve conductive connection. By energizing one of the first connecting pieces 31 (or the second connecting piece 32), the multiple electrode bodies 30 can be energized.

[0063] Of course, the first electrode module 10 may also include only one electrode body 30, and the second electrode module 20 may also include only one electrode body 30.

[0064] In some exemplary embodiments, the distance between adjacent first electrode plates 11 and second electrode plates 21 may be, but is not limited to, greater than or equal to 0.5 mm, to ensure that the dust collection electric field has sufficient electric field strength and is not prone to breakdown.

[0065] In some exemplary embodiments, the raw materials for the modified insulating film include a host material, the components of which include at least one of the following: PP (Polypropylene), PET (Polyethylene Terephthalate), PC (Polycarbonate), and ABS (Acrylonitrile Butadiene Styrene).

[0066] Therefore, in the production process of insulating film, the main raw materials can include monomers or composites of plastic films such as PP, PET, PC, and ABS.

[0067] In some exemplary embodiments, the modification treatment based on the modified insulating film 35 includes electret modification treatment, and the raw materials of the modified insulating film 35 also include electret modification materials. The components of the electret modification materials include: substrate materials, fluoropolymers, tourmaline powder, nanomaterials, and plastic additives.

[0068] The mass ratio of the base material, fluoropolymer, tourmaline powder, nanomaterials and plastic additives is 100:(1-20):(1-20):(1-20):(1-20).

[0069] In other words, by weight, the electret modified material comprises: 100 parts of base material, 1-20 parts of fluoropolymer, 1-20 parts of tourmaline powder, 1-20 parts of nanomaterials, and 1-20 parts of plastic additives.

[0070] For example: the base material can be 100 parts, and the base material, being the main raw material of the electret modified material, can have the same main component as the raw material of the modified insulating film. The number of parts of the fluoropolymer can be, but is not limited to, 1, 3, 5, 8, 10, 12, 15, 18, or 20 parts. The number of parts of tourmaline powder can be, but is not limited to, 1, 3, 5, 8, 10, 12, 15, 18, or 20 parts. The number of parts of the nanomaterial can be, but is not limited to, 1, 3, 5, 8, 10, 12, 15, 18, or 20 parts. The number of parts of the plastic additive can be, but is not limited to, 1, 3, 5, 8, 10, 12, 15, 18, or 20 parts.

[0071] In other words, by weight, the ratio of base material: fluoropolymer: tourmaline powder: nanomaterial: plastic additive = 100: (1-20): (1-20): (1-20): (1-20).

[0072] Furthermore, by weight, the ratio of base material: fluoropolymer: tourmaline powder: nanomaterial: plastic additive is 100: (5-10): (2-10): (1-10): (1-10).

[0073] In one embodiment, the ratio of base material: fluoropolymer: tourmaline powder: nanomaterial: plastic additive is 100: 5: 2: 1: 3 by weight.

[0074] Fluoropolymers can play a variety of roles in insulating films, including improving insulation performance, chemical resistance, high temperature resistance, weather resistance, and anti-adhesion properties, making the insulating film more stable and durable.

[0075] Tourmaline powder is primarily a silicate, a general term for a group of cyclic silicate minerals with a trigonal crystal system. In insulating films, tourmaline powder plays multiple roles, including enhancing dielectric properties, improving insulation strength, reducing dielectric loss, and increasing compressive strength. This allows the insulating film to better withstand electric field stresses and environmental factors in electrical equipment, ensuring the safe and reliable operation of the equipment.

[0076] Nanomaterials can play a variety of roles in insulating films, including improving the insulation performance of the insulating film, enhancing mechanical strength and UV resistance, improving durability and stability, and inhibiting microbial growth, making them more suitable for various application environments.

[0077] Plastic additives can help improve various properties of insulating films.

[0078] In some embodiments, the substrate material comprises at least one of the following: PP, PET, PC, and ABS.

[0079] Fluoropolymers contain at least one of the following components: PTFE (Polytetrafluoroethylene) and PVDF (Polyvinylidene Fluoride).

[0080] The components of nanomaterials include at least one of the following: nano-silica, nano-titanium dioxide, and nano-zinc oxide.

[0081] Plastic additives contain at least one of the following components: flame retardant, anti-aging agent, coupling agent, and antibacterial agent.

[0082] Flame retardants are additives used to reduce the flammability of plastics. Flame retardants can be, but are not limited to, brominated compounds, chlorinated compounds, aluminum hydroxide, etc.

[0083] Anti-aging agents are additives used to protect plastics from oxidation or other degradation factors. Anti-aging agents can be, but are not limited to, BHT (tert-butylhydroxytoluene), BHA (tert-butylhydroxyphenol), and vitamin E.

[0084] Coupling agents are additives used to improve the adhesion between fillers and matrix resins. Coupling agents can be, but are not limited to, silane coupling agents, titanium coupling agents, amine coupling agents, etc.

[0085] Antimicrobial agents are additives used to inhibit the growth of microorganisms on plastic surfaces. Antimicrobial agents can be, but are not limited to, silver ions, chloroisopyrimidine, triclosan, etc.

[0086] Of course, the matrix material, fluoropolymer, nanomaterial, and plastic additives are not limited to the above components, and the proportions of each component are not limited to the above ranges and can be adjusted as needed.

[0087] In some exemplary embodiments, surface roughening treatment includes at least one of the following: physical treatment, chemical treatment.

[0088] Physical processing includes, but is not limited to, treating the surface of the insulating film using methods such as laser etching and plasma etching. Chemical processing includes, but is not limited to, treating the surface of the insulating film using dry or wet methods. Dry processing is a method of surface treatment without a liquid medium, such as chemical vapor deposition (CVD). Wet processing is a method of surface treatment using a liquid medium, such as pickling, electroplating, anodizing, and solvent cleaning, which typically involves immersing or coating the object to be treated in a solution.

[0089] In some exemplary embodiments, the negative charge treatment includes at least one of the following: surface chlorination treatment, surface fluorination treatment.

[0090] Negative charge treatment refers to treating the surface of a material with highly negatively charged substances. By applying a negative charge treatment to the surface of an insulating film, the surface of the insulating film can be made more easily charged, thereby improving the triboelectric charging ability of the insulating film. This reduces the voltage loss caused by charge neutralization from charged dust (or other solid pollutants), and thus improves the adsorption and filtration performance of the dust collection device.

[0091] Highly electronegative substances are those that can carry a strong negative charge under certain conditions. These substances typically exhibit high electrophilicity, meaning they tend to accept electrons to form a negative charge. In chemistry and physics, highly electronegative substances often demonstrate influence on other substances or the environment, such as attracting positively charged particles or atoms or participating in chemical reactions.

[0092] Typical highly electronegative substances include fluorine (F2) and chlorine (Cl2), which have strong electronegativity and readily attract electrons to form negative ions or negatively charged molecules. In surface chlorination, chlorine or chlorine-containing gases are typically used to treat the material surface, causing surface modification. Similarly, in surface fluorination, fluorides or fluorine-containing compounds are typically used to treat the material surface, causing surface modification.

[0093] In some exemplary embodiments, the modification treatment of the first insulating film includes electret modification treatment. The modification treatment of the second insulating film includes electret modification treatment, surface roughening treatment, and negative charge treatment.

[0094] The power supply module typically outputs a negative high voltage to the first electrode module 10. Since solid pollutants in the air are usually negatively charged, they are generally adsorbed onto the second electrode module 20 (positive electrode) in the dust collection device. Therefore, the second insulating film has more contact with solid pollutants, requiring complex modification treatment to improve its performance. The first insulating film, on the other hand, has less contact with solid pollutants, and can even be considered to have no contact at all. Therefore, only electret modification treatment is needed on the first insulating film to ensure the maintenance of a highly efficient and durable electric field strength.

[0095] In some exemplary embodiments, the frame 40 is an insulating frame. The first electrode module 10 and the second electrode module 20 can be mounted on the frame 40 using fixing clips 50. The insulating frame may be provided with high-voltage lines, which are correspondingly connected to the first electrode module 10 and the second electrode module 20. The high-voltage lines may also be connected to high-voltage resistors, conductive springs, and other structures to facilitate the reasonable setting of the position, input voltage, and output voltage of the power supply modules.

[0096] This application also provides a preparation method for preparing the first electrode module 10 in the above embodiments. The preparation method of the first electrode module 10 includes the following steps:

[0097] The sheet conductor is cut to obtain an electrode body blank comprising a first connecting piece 31, a second connecting piece 32, multiple first electrode pieces 11 before bending, multiple first transition sections 33, and multiple second transition sections 34, as shown below. Figure 4 As shown;

[0098] A coating operation is performed on the electrode body blank so that the electrode body blank is covered by a first insulating film;

[0099] The first insulating film is cut so that the portion of the first insulating film that extends beyond the electrode body blank is cut off, and the first insulating film in the hollowed-out portion is cut off.

[0100] The first electrode sheet 11 of the coated electrode body blank is bent to obtain the first electrode module 10.

[0101] Similarly, the fabrication method of the second electrode module 20 includes the following steps:

[0102] The sheet conductor is cut to obtain an electrode body blank including a first connecting piece 31, a second connecting piece 32, multiple second electrode pieces 21 before bending, multiple first transition sections 33, and multiple second transition sections 34;

[0103] A coating operation is performed on the electrode body blank so that the electrode body blank is covered with a second insulating film;

[0104] The second insulating film is cut so that the portion of the second insulating film that extends beyond the electrode body blank is cut off, and the second insulating film in the hollowed-out portion is cut off.

[0105] The second electrode sheet 21 of the coated electrode body blank is bent to obtain the second electrode module 20.

[0106] The cutting of the sheet conductor can be achieved using a punch press. The coating operation can be achieved using a coating machine. The cutting of the insulating film can be achieved using a punch press. The bending operation of the first electrode sheet 11 / second electrode sheet 21 can be achieved using a machine tool.

[0107] This application also provides an air handling device, including: a power supply module and a dust collection device as described in any of the above embodiments, wherein the power supply module is electrically connected to the first electrode module 10 and the second electrode module 20 and is configured to supply power to the dust collection device.

[0108] The air handling equipment provided in this application includes the dust collection device of any of the above embodiments, and therefore has all the above-mentioned beneficial effects, which will not be repeated here.

[0109] The high voltage output from the power supply module to the first electrode module 10 can be a negative high voltage. The power supply module is configured to output DC high voltage (such as DC constant voltage high voltage) to the dust collection device, thereby generating an electrostatic field between the first electrode plate 11 and the second electrode plate 21. This electrostatic field helps improve dust removal efficiency. Of course, the power supply module can also output pulsed high voltage to the dust collection device.

[0110] In some exemplary embodiments, the air handling equipment also includes a charging module (not shown) located upstream of the dust collection device. The charging module is configured to discharge to charge solid pollutants in the air. This makes it easier to capture charged solid pollutants as they flow towards the dust collection device, thereby improving purification efficiency.

[0111] The charging module can be used to give solid pollutants the same charge as the first electrode module 10, so that solid pollutants can be adsorbed onto the second electrode plate 21, i.e., the collecting electrode.

[0112] In some exemplary embodiments, the charging module is also electrically connected to the power supply module. In other words, the power supply module supplies power to both the dust collection device and the charging module. This eliminates the need for a separate power supply module, simplifying the structure of the air handling equipment and reducing production costs.

[0113] In some embodiments, the power supply module includes components such as input terminals, input lines, high voltage transformers, charged output lines and carbon brush heads, dust collection output lines and terminals, and micro switches, and can simultaneously output the high voltage required by the charged module and the high voltage required by the dust collection device.

[0114] In some exemplary embodiments, the air handling device can be, but is not limited to, an air conditioner, an air purifier, a humidifier, a dehumidifier, or other air handling devices with air handling functions.

[0115] In some exemplary embodiments, the air handling equipment includes an air duct, and a dust collection device is disposed within the air duct, which may be located at the air inlet, the air outlet, or between the air inlet and the air outlet. The air handling equipment may also include a fan for promoting airflow within the air duct.

[0116] The following are some examples, comparative examples, and experimental results (the air handling unit is a certain model of wall-mounted air conditioner that is currently on sale, with 100% air supply).

[0117]

[0118]

[0119] Note: In the above embodiments and comparative examples, the first insulating film only underwent electret modification treatment. Regardless of whether it is the first or second insulating film, when undergoing electret modification treatment, the formulation of the electret modifying material is: by weight, base material: fluoropolymer: tourmaline powder: nanomaterials: plastic additives = 100:5:2:1:3, where the base material is PET. The main material of the insulating film is PET. P4 level refers to the cumulative purification capacity level, which is the highest level in the national standard. CADR refers to Clean Air Delivery Rate; the higher the value, the better the purification effect. CCM refers to cumulative purification capacity. CCM before decay to the set value refers to the experimental results obtained when the cumulative purification capacity of the air handling equipment has not decayed (i.e., the dust collection device is in brand new condition). CCM after decay to the set value refers to the experimental results obtained when the cumulative purification capacity of the air handling equipment decays to the set value (e.g., 50%) and the dust collection device has been cleaned.

[0120] As can be seen from Comparative Example 1, the second insulating film has a relatively low purification efficiency when it is not modified, the cumulative purification amount cannot meet the requirements of P4 level, and the purification performance is severely lost under high humidity environment.

[0121] As can be seen from the comparison between Example 1 and Comparative Example 1, after the second insulating film is modified with electret, the purification efficiency and moisture resistance are improved, and the cumulative purification capacity can meet the requirements of P4 level.

[0122] A comparison of Example 2 and Example 1 shows that the addition of surface roughening treatment to the second insulating film improves both purification efficiency and moisture resistance, with a significant increase in moisture resistance. Furthermore, the surface of the second insulating film is easy to clean, and its purification performance can be efficiently restored after cleaning. This indicates that surface roughening treatment is beneficial for improving the moisture resistance of the dust collection device.

[0123] A comparison of Example 3 and Example 2 shows that after the second insulating film underwent negative charge treatment, both the purification efficiency and moisture resistance were further improved, with a significant increase in purification efficiency. Furthermore, the surface of the second insulating film is easy to clean, and its purification performance can be efficiently restored after cleaning. This indicates that negative charge treatment is beneficial for improving the electrostatic dust collection performance of the dust collection device.

[0124] A comparison of Example 4 and Example 3 shows that without electret modification, the purification efficiency of the second insulating film decreases, but the impact on moisture resistance is minimal. Furthermore, the cumulative purification capacity decreases significantly, failing to meet the P4 level requirements. This indicates that electret modification treatment can effectively improve the cumulative purification capacity of the dust collection device.

[0125] Furthermore, by repeating the tests on Example 3 and Comparative Example 1, the following results were obtained: Figure 10 The result. From Figure 10 The results show that modifying the second insulating film can effectively improve the particulate matter purification efficiency (CADR) of the dust collection device; and the particulate matter purification efficiency (CADR) can be maintained at a high level for a long time.

[0126] In summary, the dust collection device and air handling equipment provided in this application have the following beneficial effects:

[0127] 1) After the insulating film on the surface of the dust collection device is modified with negative charge, the charged dust and the surface of the highly negatively charged material rub against each other during the electrostatic dust collection process, which can keep the material surface under continuous high pressure and ensure continuous and efficient filtration.

[0128] 2) After the surface of the insulating film on the dust collection device is micro-roughened, the specific surface area of ​​the material is increased, and the ability of charged dust to generate electricity through friction with the surface of the module material and the electric field adsorption area are increased, thereby effectively improving the adsorption and filtration performance.

[0129] 3) After the insulating film on the surface of the dust collection device is modified by electret, the module can not only continuously ensure the high voltage power storage capacity during the electrostatic dust collection process, but also store the amount of electricity generated by the friction between charged dust and negative ions and the material surface.

[0130] 4) The high-voltage electrode of the dust collection device adopts an electret modified film, which effectively stores and increases the dust collection voltage. The zero electrode (low-voltage electrode) adopts electret modification, surface micro-roughening treatment and negative charge treatment, which can effectively generate electricity from charged dust by friction, and store the charge generated by friction.

[0131] 5) In the dust collection device, the electrode body is composed of an integrally formed conductor with high conductivity, which helps to avoid voltage loss. Therefore, the overall potential is high and uniform, resulting in high filtration efficiency.

[0132] 6) After the high-voltage module in the dust collection device is powered on, it forms a high-voltage array ring that fills the entire module, which helps to avoid local high-voltage field defects.

[0133] 7) The conductor is formed, coated, and cut and rotated in one step, resulting in a simple structure that enables automated modular production and lower costs.

[0134] 8) The conductor is completely covered by an insulating film, so it will not ionize with the air, will not produce ozone, and will not cause arcing.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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.

[0140] 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.

Claims

1. A dust collection device, characterized in that, include: The frame includes a first electrode module and a second electrode module mounted on the frame. The first electrode module is configured to connect to the high-voltage end of the power supply module, and the second electrode module is configured to connect to the low-voltage end or ground end of the power supply module. Both the first electrode module and the second electrode module include an electrode body. The electrode body of the first electrode module includes a plurality of spaced-apart first electrode plates, and the electrode body of the second electrode module includes a plurality of spaced-apart second electrode plates. The plurality of second electrode plates and the plurality of first electrode plates are alternately spaced, so that a dust-collecting electric field can be formed between adjacent first electrode plates and second electrode plates. The outer surface of the first electrode sheet is covered with a first insulating film, and the outer surface of the second electrode sheet is covered with a second insulating film. Both the first and second insulating films are modified insulating films that have undergone modification treatment. The modification treatment includes at least one of the following: electret modification treatment, surface roughening treatment, and negative charge treatment. The electret modification treatment is configured to improve the energy storage capacity of the insulating film, the surface roughening treatment is configured to improve the specific surface area of ​​the insulating film, and the negative charge treatment is configured to improve the triboelectric charging capacity of the insulating film.

2. The dust collection device according to claim 1, characterized in that, The electrode body further includes a first connecting piece and a second connecting piece; the first connecting piece or the second connecting piece is configured to be electrically connected to the power supply module. The two ends of the plurality of first electrode pieces are respectively connected to the first connecting piece and the second connecting piece, so that the electrode body of the first electrode module forms an integral structure; The two ends of the multiple second electrode plates are respectively connected to the first connecting plate and the second connecting plate, so that the electrode body of the second electrode module forms an integral structure.

3. The dust collection device according to claim 2, characterized in that, The electrode body further includes multiple first transition sections and multiple second transition sections; One end of each of the plurality of first electrode pieces is connected to the first connecting piece through a plurality of first transition sections, and the other end of each of the plurality of first electrode pieces is connected to the second connecting piece through a plurality of second transition sections; One end of each of the plurality of second electrode plates is connected to the first connecting plate through a plurality of first transition sections, and the other end of each of the plurality of second electrode plates is connected to the second connecting plate through a plurality of second transition sections. The first transition segment is inclined relative to the first connecting piece, and the second transition segment is inclined relative to the second connecting piece; Both the first connecting piece and the second connecting piece are perpendicular to the first electrode piece, and the first electrode piece and the second electrode piece are parallel to each other.

4. The dust collection device according to claim 3, characterized in that, The electrode body is configured as an integral structure formed by punching and bending a sheet conductor, and the first electrode sheet and the second electrode sheet are configured to be formed by bending after the sheet conductor is punched.

5. The dust collection device according to claim 4, characterized in that, The first insulating film is adhered to and covers the electrode body of the first electrode module, and the second insulating film is adhered to and covers the electrode body of the second electrode module.

6. The dust collection device according to claim 5, characterized in that, The first insulating film and the second insulating film are configured such that after the sheet conductor is punched and before it is bent, a film coating operation is performed and excess insulating film is cut off.

7. The dust collection device according to claim 3, characterized in that, The first electrode module includes a plurality of electrode bodies, wherein the first connecting pieces and second connecting pieces of the plurality of electrode bodies are respectively stacked and the first electrode pieces of the plurality of electrode bodies are arranged at cross intervals. The second electrode module includes a plurality of electrode bodies, wherein the first connecting pieces and second connecting pieces of the plurality of electrode bodies are respectively stacked and the second electrode pieces of the plurality of electrode bodies are arranged in a cross-spaced manner; The first electrode module and the second electrode module are interleaved, such that all the first electrode pieces of the first electrode module and all the second electrode pieces of the second electrode module are alternately spaced.

8. The dust collection device according to any one of claims 1 to 7, characterized in that, The distance between adjacent first electrode plates and second electrode plates is greater than or equal to 0.5 mm; and / or, The electrode body is a metal conductor.

9. The dust collection device according to any one of claims 1 to 7, characterized in that, The raw materials for the modified insulating film include a main material, and the main material comprises at least one of the following: PP, PET, PC, and ABS; The modification treatment based on the modified insulating film includes the electret modification treatment. The raw materials of the modified insulating film also include electret modifying materials. The components of the electret modifying materials include: base material, fluoropolymer, tourmaline powder, nanomaterials, and plastic additives. By weight, the components of the electret modifying materials include: 100 parts base material, 1-20 parts fluoropolymer, 1-20 parts tourmaline powder, 1-20 parts nanomaterials, and 1-20 parts plastic additives.

10. The dust collection device according to claim 9, characterized in that, The substrate material comprises at least one of the following: PP, PET, PC, ABS; The fluoropolymer comprises at least one of the following: PTFE, PVDF; The nanomaterial comprises at least one of the following: nano-silica, nano-titanium dioxide, and nano-zinc oxide; The plastic additives include at least one of the following: flame retardants, anti-aging agents, coupling agents, and antibacterial agents.

11. The dust collection device according to any one of claims 1 to 7, characterized in that, The surface roughening treatment includes at least one of the following: physical treatment, chemical treatment; The negative charge treatment includes at least one of the following: surface chlorination treatment and surface fluorination treatment.

12. The dust collection device according to any one of claims 1 to 7, characterized in that, The modification treatment of the first insulating film includes the electret modification treatment, and the modification treatment of the second insulating film includes the electret modification treatment, the surface roughening treatment, and the negative charge treatment.

13. An air handling device, characterized in that, It includes a power supply module and a dust collection device as described in any one of claims 1 to 12, wherein the power supply module is electrically connected to the first electrode module and the second electrode module and is configured to supply power to the dust collection device.

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