Electrostatic dust collection module and air purification device

Abstract

The invention relates to the technical field of purification devices, and discloses an electrostatic dust collection module and an air purification device.The electrostatic dust collection module comprises a shell, a discharge electrode, a dust collection electrode, a first power source, a power structure and a cleaning structure; the discharge electrode is connected in the shell; the dust collection electrode is arranged in the shell, and the dust collection electrode is arranged on the periphery of the discharge electrode in a sleeving manner; the first power supply is respectively matched and connected with the discharge electrode and the dust collection electrode; the power output end of the power structure is connected with the dust collection electrode and used for driving the dust collection electrode to rotate around the discharge electrode; the cleaning structure is arranged on the side portions of the discharge electrode and the dust collection electrode in the first direction and used for cleaning the dust collection electrode. According to the electrostatic dust collection module provided by the invention, the dust collection electrode can rotate under the driving of the power structure, so that automatic cleaning is realized under the cleaning action of the cleaning structure.

Description

Technical Field

[0001] The present invention relates to the technical field of purification devices, and in particular to an electrostatic dust collection module and an air purification device. Background Art

[0002] In the field of household air purification, whether it is a filter-type purification device or an electrostatic purification device on the market, the CADR value of the air purifier is the focus of publicity. The CADR value of the air purifier can track the actual usage results of users. Some related air purification devices have intelligent gear adjustment functions, but most household air purification devices rarely use the highest gear of the air purification device when in use. After analysis, it was found that there are few environments where PM2.5 exceeds 100 and needs to be adjusted to a high gear for strong removal. Users' complaints about air purification devices mostly come from odors, filter replacements, and dust collection modules that are difficult to wash and cannot be cleaned.

[0003] The electrostatic dust collection modules in the related technology include dual-zone dust collection and IFD dust collection. The dust collection principle is to form a higher deflection electric field in the dust collection area, so that the charged dust after passing through the charging area is deflected in the deflection electric field and falls on the collecting electrode to achieve the effect of purifying the dust collection.

[0004] However, both of the above-mentioned two electrostatic dust collection modules are difficult to clean and have strong odor, which brings a lot of inconvenience to users. Summary of the invention

[0005] In view of this, the present invention provides an electrostatic dust collection module and an air purification device to solve the problem that the electrostatic dust collection module is difficult to clean and has a strong odor.

[0006] In a first aspect, the present invention provides an electrostatic dust collection module, comprising:

[0007] case;

[0008] a discharge electrode connected inside the shell;

[0009] A dust collecting electrode is arranged in the shell and sleeved on the outer periphery of the discharge electrode;

[0010] A first power source is matched and connected to the discharge electrode and the dust collecting electrode respectively;

[0011] A power structure, the power output end of which is connected to the dust collecting electrode and is used to drive the dust collecting electrode to rotate around the discharge electrode;

[0012] A cleaning structure is arranged on the sides of the discharge electrode and the dust collecting electrode along a first direction, and is used for cleaning the dust collecting electrode.

[0013] Beneficial effect: The dust collecting electrode is sleeved on the outer periphery of the discharge electrode and can rotate around the discharge electrode under the drive of the power output end of the power structure. The part of the dust collecting electrode and the discharge electrode that is relatively arranged in the second direction is the dust collecting area, which can be used to collect charged dust to achieve the purpose of dust removal and purification; wherein, the second direction and the first direction are perpendicular to each other; the cleaning structure is arranged on the sides of the discharge electrode and the dust collecting electrode along the first direction, so the part of the dust collecting electrode located on the side of the discharge electrode in the first direction is the cleaning area, and the dust collecting electrode that rotates to the cleaning area under the drive of the power structure is automatically cleaned under the cleaning action of the cleaning structure, which is not only convenient for cleaning, but also has a better cleaning effect, solves the problem of heavy odor, and brings a better user experience.

[0014] In an optional embodiment, the discharge electrodes include at least three electrodes spaced apart along the second direction, and the dust collecting electrodes include at least two groups spaced apart along the second direction, and at least two groups of the dust collecting electrodes are spaced apart and sleeved on the periphery of at least three discharge electrodes; each group of the dust collecting electrodes has at least two, and at least two of the dust collecting electrodes are sequentially distributed along the third direction, wherein the second direction, the first direction and the third direction are perpendicular to each other.

[0015] Beneficial effects: The at least two dust collecting electrodes in each group are sequentially distributed along the third direction, which can reduce the size of a single dust collecting electrode in the third direction, facilitate the manufacture of the dust collecting electrode, and facilitate driving the dust collecting electrode to rotate around the discharge electrode, so that when cleaning the dust collecting electrode, a better cleaning effect can be achieved. In addition, the arrangement of at least two dust collecting electrodes in each group can also avoid the reduction of the dust collecting area.

[0016] In an optional implementation, the discharge electrode is a plate-shaped structure.

[0017] Beneficial effects: The plate-shaped discharge electrode has a simple structure and is easy to manufacture; and when the discharge electrodes are distributed at intervals along the second direction, they can also have smaller intervals.

[0018] In an optional embodiment, the dust collecting electrode is a wire electrode.

[0019] Beneficial effects: The dust collecting electrode is a wire electrode with a simple structure and is easy to manufacture. It is also easy to drive the dust collecting electrode to rotate around the discharge electrode. When the dust collecting electrode is cleaned, it can also have a better cleaning effect.

[0020] In an optional embodiment, the electrostatic dust collection module also includes a screw, which is rotatably connected to the shell and connected to the power output end of the power structure; the screw extends along a third direction, and each discharge electrode is respectively provided with a screw at both ends of the first direction, and the dust collecting electrode is sleeved on the outer periphery of the two screws.

[0021] Beneficial effect: The power output end of the power structure drives the screw to rotate, and the screw drives the dust collecting electrode to rotate around the discharge electrode. Therefore, the screw can not only support the dust collecting electrode as an annular structure sleeved on the outer periphery of the discharge electrode, but also drive the dust collecting electrode to rotate under the drive of the power structure, so as to realize automatic cleaning of the dust collecting electrode under the action of the cleaning structure.

[0022] In an optional embodiment, a silicone groove is provided on the screw rod, and the dust collecting electrode is clamped in the silicone groove.

[0023] Beneficial effects: Through the setting of the silicone card groove, the dust collecting electrode can be limited in the third direction to prevent the dust collecting electrode from moving and dislocating in the third direction, thereby ensuring the dust collecting and cleaning effects of the dust collecting electrode; and friction can be generated between the dust collecting electrode to better drive the dust collecting electrode to rotate with the screw.

[0024] In an optional embodiment, the electrostatic dust collection module also includes a screw fixedly connected to the shell, the screw extending along a third direction, each of the discharge electrodes is respectively provided with a screw at both ends of the first direction, and the dust collecting electrode is slidably sleeved on the outer periphery of the two screws; the power structure is a traction structure, and the power output end of the traction structure is connected to the dust collecting electrode.

[0025] Beneficial effects: The screw can support the dust collecting electrode as an annular structure sleeved on the outer periphery of the discharge electrode. The dust collecting electrode and the screw are slidably matched. The outer periphery of the dust collecting electrode is self-lubricating. When the power output end of the power structure provides traction force to the dust collecting electrode, the dust collecting electrode can slide relative to the screw to rotate around the discharge electrode, and the dust collecting electrode can be automatically cleaned under the action of the cleaning structure.

[0026] In an optional embodiment, a positioning slot is provided on the screw rod, and the dust collecting electrode is slidably engaged with the positioning slot.

[0027] Beneficial effect: By setting the positioning slot, the dust collecting electrode can be limited in the third direction to prevent the dust collecting electrode from moving and dislocating in the third direction, thereby ensuring the dust collecting effect and cleaning effect of the dust collecting electrode.

[0028] In an optional embodiment, the cleaning structure includes a cleaning brush, which is connected to the shell and cooperates with the dust collecting electrode.

[0029] Beneficial effect: The cleaning brush cooperates with the dust collecting electrode and can be used to clean the dust on the dust collecting electrode.

[0030] In an optional embodiment, the cleaning structure further includes a plasma cleaning component, which is connected to the shell and cooperates with the dust collecting electrode.

[0031] Beneficial effect: The plasma cleaning component cooperates with the dust collecting electrode to discharge at the oily interface of the dust collecting electrode to achieve deep cleaning of oily substances.

[0032] In an optional embodiment, the cleaning brushes and the plasma cleaning components are cross-arranged in sequence along the second direction, each of the cleaning brushes is used to clean two adjacent groups of the dust collecting electrodes at the same time, and each group of the plasma cleaning components is used to clean two adjacent groups of the dust collecting electrodes at the same time.

[0033] Beneficial effect: the cleaning brush and the plasma cleaning assembly are arranged crosswise in sequence along the second direction, which can not only reduce the space occupied by the cleaning brush and the plasma cleaning assembly, but also perform cleaning of the cleaning brush and plasma discharge cleaning on each group of dust collecting electrodes.

[0034] In an optional embodiment, the plasma cleaning assembly comprises:

[0035] Second power supply;

[0036] The plasma generating element at least partially diffracts at the periphery of the dust collecting electrode, and the plasma generating element is matched and connected with the second power supply.

[0037] Beneficial effect: At least part of the plasma generating element is diffracted on the outer periphery of the dust collecting electrode to form a ring structure for the dust collecting electrode to move through, which can better perform plasma discharge cleaning on the dust collecting electrode and obtain a better cleaning effect.

[0038] In an optional embodiment, an insulating layer is provided on the periphery of the dust collecting electrode, and the insulating layer is made of modified polytetrafluoroethylene material.

[0039] Beneficial effects: The insulating layer of the dust collecting electrode is made of modified polytetrafluoroethylene material, which has a certain charge conduction ability and less weakening of the deflection electric field to effectively collect dust; it is also flexible and easy to bend; it also has a certain wear resistance, and when the cleaning structure is cleaned with a cleaning brush, it has a certain life under wear; in addition, the insulating layer made of modified polytetrafluoroethylene material can also be insulated, can withstand plasma discharge, and achieve decomposition of oily substances under plasma discharge.

[0040] In an optional embodiment, the modified polytetrafluoroethylene material includes polytetrafluoroethylene material and nano conductive carbon black material added during the mixing process.

[0041] Beneficial effects: The insulating layer made of nano-conductive carbon black material added in the mixing process of polytetrafluoroethylene material improves the wear resistance of polytetrafluoroethylene material and reduces the resistance of polytetrafluoroethylene material, which is in a state of having a certain charge conduction ability but being in an insulating state.

[0042] In an optional embodiment, the nano conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 2.5% to 4.5% during the mixing process.

[0043] In a second aspect, the present invention further provides an air purification device, comprising the above-mentioned electrostatic dust collection module. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 A partial schematic diagram of an electrostatic dust collection module according to an embodiment of the present invention;

[0046] Figure 2 A cross-sectional view of a dust collecting electrode of an electrostatic dust collecting module according to an embodiment of the present invention;

[0047] Figure 3 A cross-sectional view of a plasma generating component of an electrostatic dust collecting module according to an embodiment of the present invention;

[0048] Figure 4 It is a cross-sectional view of the installation of a dust collecting electrode and a plasma generating element of an electrostatic dust collecting module according to an embodiment of the present invention;

[0049] Figure 5 A schematic diagram of the principle of a plasma cleaning component of an electrostatic dust collection module according to an embodiment of the present invention;

[0050] Figure 6 A partial schematic diagram of an electrostatic dust collection module from one perspective according to an embodiment of the present invention;

[0051] Figure 7 for Figure 6 A is a partial enlarged schematic diagram;

[0052] Figure 8 A partial schematic diagram of an electrostatic dust collection module according to an embodiment of the present invention from another perspective;

[0053] Fig. 9 for Figure 8A partial enlarged schematic diagram of B in the middle;

[0054] Fig.10 The schematic diagram is a dust collecting electrode of an electrostatic dust collecting module in an embodiment of the present invention.

[0055] Description of reference numerals:

[0056] 1. Shell; 2. Discharge electrode; 3. Dust collecting electrode; 4. Cleaning structure; 41. Cleaning brush; 42. Plasma cleaning assembly; 421. Plasma generating element; 422. Second power supply; 5. Screw. DETAILED DESCRIPTION

[0057] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0058] The electrostatic dust collection modules in the related technology include dual-zone dust collection and IFD dust collection. The dust collection principle is to form a higher deflection electric field in the dust collection area, so that the charged dust after passing through the charging area is deflected in the deflection electric field and falls on the collecting electrode to achieve the effect of purifying the dust collection.

[0059] Dual-zone dust collection modules are mostly made of metal flat plates. Due to the tip discharge effect of burrs or edges, the deflection voltage loading cannot be too high, otherwise it is very easy to produce tip discharge and sparks. In addition, metal electrodes also have problems such as corrosion, rust, and difficulty in cleaning. In order to solve this problem, a solution was developed to wrap the metal high-voltage pole in the parallel electric field with an insulating layer or to wrap both the high-voltage pole and the grounding pole with an insulating layer. To further improve efficiency, IFD dust collection was developed. However, the IFD module adopts a honeycomb structure with extremely small holes, so that the module can basically only be cleaned by soaking + flushing with cleaning fluid, and it is difficult to use a brushing method for deep cleaning; and after the IFD module has been used for a period of time, it is prone to more serious yellowing and strong odor problems.

[0060] Combine the following Figures 1 to 10 , describing an embodiment of the present invention.

[0061] According to an embodiment of the present invention, on the one hand, an electrostatic dust collection module is provided, comprising a shell 1, a discharge electrode 2, a dust collecting electrode 3, a first power supply, a power structure and a cleaning structure 4; the discharge electrode 2 is connected in the shell 1; the dust collecting electrode 3 is arranged in the shell 1, and the dust collecting electrode 3 is sleeved on the outer periphery of the discharge electrode 2; the first power supply is matched and connected with the discharge electrode 2 and the dust collecting electrode 3 respectively; the power output end of the power structure is connected with the dust collecting electrode 3, for driving the dust collecting electrode 3 to rotate around the discharge electrode 2; the cleaning structure 4 is arranged on the sides of the discharge electrode 2 and the dust collecting electrode 3 along the first direction, for cleaning the dust collecting electrode 3.

[0062] The dust collecting electrode 3 is sleeved on the outer periphery of the discharge electrode 2, and can rotate around the discharge electrode 2 under the drive of the power output end of the power structure. The part of the dust collecting electrode 3 and the discharge electrode 2 arranged opposite to each other in the second direction is the dust collecting area, which can be used to collect charged dust to achieve the purpose of dust removal and purification; wherein, the second direction and the first direction are perpendicular to each other; the cleaning structure 4 is arranged on the side of the discharge electrode 2 and the dust collecting electrode 3 along the first direction, so the part of the dust collecting electrode 3 located on the side of the discharge electrode 2 in the first direction is the cleaning area, and the dust collecting electrode 3 rotated to the cleaning area under the drive of the power structure realizes automatic cleaning under the cleaning action of the cleaning structure 4, which is not only convenient for cleaning, but also has a better cleaning effect, solves the problem of heavy odor, and brings a better user experience.

[0063] Moreover, in the conventional electrostatic dust collection module, the distance between the dust collecting electrode 3 and the discharge electrode 2 is relatively small, approximately 7.5 mm. At this distance, the dust collected on the dust collecting electrode 3 is difficult to be cleaned manually. In the present embodiment, due to the division of the dust collecting area and the cleaning area, the cleaning of the dust collecting electrode 3 is no longer affected by the narrow distance between the dust collecting electrode 3 and the discharge electrode 2, thereby reducing the difficulty of cleaning the dust collecting electrode 3.

[0064] In a specific implementation, the first power supply includes a high voltage terminal and a ground terminal, the high voltage terminal is electrically connected to the discharge electrode 2, and the ground terminal is electrically connected to the dust collecting electrode 3. The first power supply is a high voltage DC power supply.

[0065] In a further embodiment, the cleaning structure 4 may have two groups, and the two groups of cleaning structures 4 are respectively arranged on both sides of the dust collecting electrode 3 along the first direction, which can have a better cleaning effect. Alternatively, the cleaning structure 4 has one group, which is arranged on one side of the dust collecting electrode 3 along the first direction.

[0066] In one embodiment, the discharge electrodes 2 include at least three electrodes spaced apart along the second direction, the dust collecting electrodes 3 include at least two groups spaced apart along the second direction, at least two groups of dust collecting electrodes 3 are spaced apart and sleeved on the periphery of at least three discharge electrodes 2; each group of dust collecting electrodes 3 has at least two electrodes, at least two of which are sequentially distributed along the third direction, wherein the second direction, the first direction and the third direction are mutually perpendicular. Figure 1 , Figures 6 to 10 As shown in, Figures 6 to 9 The power structure and the cleaning structure 4 are not shown in the figures. Further, the screw 5 is not shown in the figures.

[0067] The at least two dust collecting electrodes 3 of each group are sequentially distributed along the third direction, which can reduce the size of a single dust collecting electrode 3 in the third direction, facilitate the manufacture of the dust collecting electrode 3, and facilitate driving the dust collecting electrode 3 to rotate around the discharge electrode 2, so that a better cleaning effect can be achieved when cleaning the dust collecting electrode 3. In addition, the provision of at least two dust collecting electrodes 3 in each group can also avoid a reduction in the dust collecting area.

[0068] In a specific embodiment, the second direction may be a thickness direction of the discharge electrode 2 , the first direction may be a length direction of the discharge electrode 2 , and the third direction may be a width direction of the discharge electrode 2 .

[0069] In one embodiment, the discharge electrode 2 is a plate-shaped structure.

[0070] The plate-shaped discharge electrode 2 has a simple structure and is easy to manufacture; and when the discharge electrodes 2 are distributed at intervals along the second direction, the intervals can also be small.

[0071] In a further embodiment, the dust collecting electrode 3 located in the dust collecting area is arranged in parallel with the discharge electrode 2, which can have a more uniform dust collecting effect.

[0072] In a specific embodiment, the discharge electrode 2 can be fixedly connected to the housing 1. The discharge electrode 2 can use epoxy as an insulating layer, and the thickness of the insulating layer of the discharge electrode 2 can range from 0.25 mm to 0.8 mm, which is relatively low in cost. Furthermore, when the process efficiency is high, the thickness of the insulating layer of the discharge electrode 2 can be selected to range from 0.45 mm to 0.6 mm. In a preferred embodiment, the design thickness of the insulating layer of the discharge electrode 2 can range from 0.3 mm to 0.8 mm.

[0073] In one embodiment, the dust collecting electrode 3 is a wire electrode.

[0074] The dust collecting electrode 3 is a wire electrode with a simple structure and is easy to manufacture. It is also easy to drive the dust collecting electrode 3 to rotate around the discharge electrode 2. When the dust collecting electrode 3 is cleaned, it can also have a good cleaning effect.

[0075] Specifically, the dust collecting electrode 3 may be a wire electrode with a circular cross section. Alternatively, the dust collecting electrode 3 may also be a wire electrode with a rectangular cross section.

[0076] In one embodiment, the electrostatic dust collection module also includes a screw 5, which is rotatably connected to the shell 1 and connected to the power output end of the power structure; the screw 5 extends along the third direction, and each of the discharge electrodes 2 is provided with a screw 5 at both ends of the first direction, and the dust collecting electrode 3 is sleeved on the outer periphery of the two screws 5.

[0077] The power output end of the power structure drives the screw 5 to rotate, and the screw 5 drives the dust collecting electrode 3 to rotate around the discharge electrode 2. Therefore, the screw 5 can not only support the dust collecting electrode 3 as an annular structure sleeved on the outer periphery of the discharge electrode 2, but also drive the dust collecting electrode 3 to rotate under the drive of the power structure, so as to realize automatic cleaning of the dust collecting electrode 3 under the action of the cleaning structure 4.

[0078] In one embodiment, a silicone groove is provided on the screw rod 5, and the dust collecting electrode 3 is clamped in the silicone groove.

[0079] By setting the silicone card groove, the dust collecting electrode 3 can be limited in the third direction to prevent the dust collecting electrode 3 from moving and dislocating in the third direction, thereby ensuring the dust collecting and cleaning effects of the dust collecting electrode 3; and friction can be generated between the dust collecting electrode 3 to better drive the dust collecting electrode 3 to rotate with the screw 5.

[0080] In a specific embodiment, the dust collecting electrodes 3 include at least two distributed in sequence along the third direction, and the silicone card grooves on the screw 5 also include at least two distributed in sequence along the third direction, and the number of silicone card grooves corresponds to the number of dust collecting electrodes 3 one by one.

[0081] In another embodiment, the electrostatic dust collection module also includes a screw 5, which is fixedly connected to the shell 1, and the screw 5 extends along the third direction. Each of the discharge electrodes 2 is provided with a screw 5 at both ends of the first direction, and the dust collecting electrode 3 is slidably sleeved on the outer periphery of the two screws 5; the power structure is a traction structure, and the power output end of the traction structure is connected to the dust collecting electrode 3.

[0082] The screw 5 can support the dust collecting electrode 3 as an annular structure sleeved on the outer periphery of the discharge electrode 2. The dust collecting electrode 3 and the screw 5 are slidably matched. The outer periphery of the dust collecting electrode 3 is self-lubricating. When the power output end of the power structure provides a traction force to the dust collecting electrode 3, the dust collecting electrode 3 can slide relative to the screw 5 to rotate around the discharge electrode 2, and realize automatic cleaning of the dust collecting electrode 3 under the action of the cleaning structure 4.

[0083] In one embodiment, a positioning slot is provided on the screw rod 5, and the dust collecting electrode 3 is slidably engaged with the positioning slot.

[0084] By setting the positioning slot, the dust collecting electrode 3 can be limited in the third direction to prevent the dust collecting electrode 3 from moving and misaligning in the third direction, thereby ensuring the dust collecting effect and cleaning effect of the dust collecting electrode 3.

[0085] In a specific embodiment, the dust collecting electrodes 3 include at least two sequentially distributed along the third direction, and the positioning slots on the screw 5 also include at least two sequentially distributed along the third direction, and the number of the positioning slots corresponds to the number of the dust collecting electrodes 3 one by one.

[0086] In one embodiment, the cleaning structure 4 includes a cleaning brush 41 , which is connected to the housing 1 and cooperates with the dust collecting electrode 3 .

[0087] The cleaning brush 41 cooperates with the dust collecting electrode 3 and can be used to clean the dust on the dust collecting electrode 3 .

[0088] In a specific embodiment, the cleaning brush 41 is fixedly connected to the shell 1, and the outer periphery of the cleaning brush 41 is provided with bristles along the third direction at least on one side facing the dust collecting electrode 3, and the cleaning brush 41 can clean the dust collecting electrodes 3 distributed along the third direction at the same time.

[0089] Specifically, in another embodiment, the cleaning brush 41 is rotatably connected to the housing 1, and bristles are arranged on the periphery of the cleaning brush 41 along the third direction. The cleaning brush 41 can clean the dust collecting electrodes 3 distributed along the third direction at the same time.

[0090] In one embodiment, the cleaning structure 4 further includes a plasma cleaning component 42 , which is connected to the housing 1 and cooperates with the dust collecting electrode 3 .

[0091] The plasma cleaning component 42 cooperates with the dust collecting electrode 3 to discharge at the oily interface of the dust collecting electrode 3 to achieve deep cleaning of the oily substances.

[0092] In one embodiment, the cleaning brushes 41 and the plasma cleaning components 42 are cross-arranged in sequence along the second direction, and each of the cleaning brushes 41 is used to clean two adjacent groups of the dust collecting electrodes 3 at the same time, and each group of the plasma cleaning components 42 is used to clean two adjacent groups of the dust collecting electrodes 3 at the same time.

[0093] The cleaning brush 41 and the plasma cleaning assembly 42 are arranged crosswise in sequence along the second direction, which can not only reduce the space occupied by the cleaning brush 41 and the plasma cleaning assembly 42, but also clean each group of dust collecting electrodes 3 with the cleaning brush 41 and plasma discharge.

[0094] In one embodiment, the plasma cleaning assembly 42 includes a second power supply 422 and a plasma generator 421 ; at least a portion of the plasma generator 421 is diffracted at the periphery of the dust collecting electrode 3 , and the plasma generator 421 is matched and connected with the second power supply 422 .

[0095] At least part of the plasma generating element 421 is diffracted on the outer periphery of the dust collecting electrode 3 to form a ring structure for the dust collecting electrode 3 to move through, so as to better perform plasma discharge cleaning on the dust collecting electrode 3 and obtain a better cleaning effect.

[0096] In a specific implementation, the second power supply 422 can be a high-voltage AC power supply, and the plasma generating element 421 is a linear structure. After the plasma generating element 421 is spirally wound around the outer circumference of the dust collecting electrode 3 for at least one circle, the two ends of the plasma are respectively connected to the positive terminal and the negative terminal of the second power supply 422.

[0097] In a further embodiment, at least two plasma generating elements 421 are sequentially provided on the side of each discharge electrode 2 along the third direction, and are arranged one-to-one corresponding to at least two dust collecting electrodes 3 sequentially distributed along the third direction.

[0098] In another embodiment, a plasma generating element 421 is correspondingly provided on the side wall of each discharge electrode 2 , and the plasma generating element 421 is diffracted on the periphery of at least two dust collecting electrodes 3 in sequence along the third direction.

[0099] In one embodiment, an insulating layer is provided on the outer periphery of the dust collecting electrode 3, and the insulating layer is made of modified polytetrafluoroethylene material.

[0100] The insulating layer of the dust collecting electrode 3 is made of modified polytetrafluoroethylene material, which has a certain charge conduction ability and less weakening of the deflection electric field to effectively collect dust; it is also flexible and easy to bend; it also has a certain wear resistance, and when the cleaning structure 4 is cleaned with a cleaning brush 41, it has a certain lifespan under wear; in addition, the insulating layer made of modified polytetrafluoroethylene material can also be insulated, can withstand plasma discharge, and achieve decomposition of oily substances under plasma discharge.

[0101] In one embodiment, the modified polytetrafluoroethylene material includes polytetrafluoroethylene material and nano conductive carbon black material added during the mixing process.

[0102] The insulating layer made of nano-conductive carbon black material added during the mixing process of the polytetrafluoroethylene material improves the wear resistance of the polytetrafluoroethylene material while reducing the resistance of the polytetrafluoroethylene material, and is in a state of having a certain charge conduction ability but being insulated.

[0103] In one embodiment, the nano conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 2.5% to 4.5% during the mixing process.

[0104] Since the resistance is sensitive to the amount of nano-conductive carbon black material added, the mixing ratio of the nano-conductive carbon black material in the mixing process can be designed to be 2.5% to 4.5%.

[0105] Furthermore, when the mixing ratio of the nano-conductive carbon black material in the mixing process is 2.5% to 4.5%, the resistance of the insulating layer of the dust collecting electrode 3 is between 10 9～11 Ωcm can better realize the above functional requirements.

[0106] In a specific embodiment, the nano conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 2.5% during the mixing process.

[0107] In another specific embodiment, the nano conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 4.5% during the mixing process.

[0108] In yet another specific embodiment, the nano-conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 3.5% during the mixing process.

[0109] In a specific embodiment, the thickness of the insulating layer of the dust collecting electrode 3 may range from 0.3 mm to 0.7 mm.

[0110] In a preferred embodiment, the thickness of the insulating layer of the dust collecting electrode 3 may range from 0.3 mm to 0.4 mm.

[0111] Specifically, the manufacturing process of the insulating layer of the dust collecting electrode 3 includes:

[0112] Ordinary PTFE (polytetrafluoroethylene) engineering plastics are used as the base material, and the recommended model is PTFE-100.

[0113] During the mixing process, 2.5-4.5% of nano conductive carbon black is added. The recommended conductive carbon black model is Cabot ONDUCTEX SC Ultra.

[0114] The insulating layer base material prepared by mixing the materials in the above steps shall meet the following requirements after testing: (1) volume resistivity 10 9～11 Ωcm; (2) Shore A hardness greater than 65.

[0115] The thickness of the insulation layer of the modified wire electrode ranges from 0.3 mm to 1.0 mm, and the recommended thickness is 0.5 mm.

[0116] According to an embodiment of the present invention, on the other hand, an air purification device is provided, comprising the above-mentioned electrostatic dust collection module.

[0117] The electric dust collection module includes a shell 1, a discharge electrode 2, a dust collecting electrode 3, a first power supply, a power structure and a cleaning structure 4; the discharge electrode 2 is connected in the shell 1, and the discharge electrode 2 includes at least two electrodes spaced apart along the second direction; the dust collecting electrode 3 is arranged in the shell 1, and has at least two groups, and at least two groups of the dust collecting electrodes 3 are spaced apart and sleeved on the outer periphery of at least three of the discharge electrodes 2; the first power supply is matched and connected with the discharge electrode 2 and the dust collecting electrode 3 respectively; the power output end of the power structure is connected with the dust collecting electrode 3, and is used to drive the dust collecting electrode 3 to rotate around the discharge electrode 2; the cleaning structure 4 is arranged on the sides of the discharge electrode 2 and the dust collecting electrode 3 along the first direction, and is used to clean the dust collecting electrode 3; wherein the second direction and the first direction are perpendicular to each other. The dust collecting electrode 3 is sleeved on the outer periphery of the discharge electrode 2, and can rotate around the discharge electrode 2 under the drive of the power output end of the power structure. The part of the dust collecting electrode 3 and the discharge electrode 2 arranged opposite to each other in the second direction is the dust collecting area, which can be used to collect charged dust to achieve the purpose of dust removal and purification; the cleaning structure 4 is arranged on the side of the discharge electrode 2 and the dust collecting electrode 3 along the first direction, so the part of the dust collecting electrode 3 located on the side of the discharge electrode 2 in the first direction is the cleaning area, and the dust collecting electrode 3 rotated to the cleaning area under the drive of the power structure is automatically cleaned under the cleaning action of the cleaning structure 4, which is not only convenient for cleaning, but also has a better cleaning effect, solves the problem of heavy odor, and brings a better user experience.

[0118] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present application.

Claims

1. An electrostatic dust collection module, characterized in that: include: Housing (1); A discharge electrode (2) connected inside the housing (1); A dust collecting electrode (3) is arranged in the housing (1) and sleeved on the outer circumference of the discharge electrode (2); A first power source is matched and connected to the discharge electrode (2) and the dust collecting electrode (3) respectively; A power structure, wherein the power output end is connected to the dust collecting electrode (3) and is used to drive the dust collecting electrode (3) to rotate around the discharge electrode (2); A cleaning structure (4) is arranged along a first direction on the sides of the discharge electrode (2) and the dust collecting electrode (3) and is used for cleaning the dust collecting electrode (3).

2. The electrostatic dust collection module according to claim 1, characterized in that: The discharge electrodes (2) include at least three electrodes spaced apart along a second direction, the dust collecting electrodes (3) include at least two groups spaced apart along the second direction, at least two groups of the dust collecting electrodes (3) are spaced apart and sleeved on the outer periphery of at least three discharge electrodes (2); each group of the dust collecting electrodes (3) has at least two electrodes, and at least two of the dust collecting electrodes (3) are sequentially spaced apart along a third direction, wherein the second direction, the first direction and the third direction are mutually perpendicular in pairs.

3. The electrostatic dust collection module according to claim 2, characterized in that: The discharge electrode (2) is a plate-like structure; And / or, the dust collecting electrode (3) is a wire electrode.

4. The electrostatic dust collection module according to any one of claims 1 to 3, characterized in that: It also includes a screw (5) rotatably connected to the shell (1) and connected to the power output end of the power structure; the screw (5) extends along the third direction, each of the discharge electrodes (2) is provided with a screw (5) at both ends of the first direction, and the dust collecting electrode (3) is sleeved on the outer circumference of the two screws (5).

5. The electrostatic dust collection module according to claim 4, characterized in that: The screw rod (5) is provided with a silicone groove, and the dust collecting electrode (3) is clamped in the silicone groove.

6. The electrostatic dust collection module according to any one of claims 1 to 3, characterized in that: It also comprises a screw (5) fixedly connected to the shell (1), the screw (5) extending along the third direction, each of the discharge electrodes (2) being provided with a screw (5) at both ends in the first direction, and the dust collecting electrode (3) being slidably sleeved on the outer circumference of the two screws (5); the power structure is a traction structure, and the power output end of the traction structure is connected to the dust collecting electrode (3).

7. The electrostatic dust collection module according to claim 6, characterized in that: The screw rod (5) is provided with a positioning slot, and the dust collecting electrode (3) is slidably engaged with the positioning slot.

8. The electrostatic dust collection module according to any one of claims 1 to 3, characterized in that: The cleaning structure (4) comprises a cleaning brush (41), wherein the cleaning brush (41) is connected to the housing (1) and cooperates with the dust collecting electrode (3).

9. The electrostatic dust collection module according to claim 8, characterized in that: The cleaning structure (4) also includes a plasma cleaning component (42), which is connected to the shell (1) and cooperates with the dust collecting electrode (3).

10. The electrostatic dust collection module according to claim 9, characterized in that: The cleaning brushes (41) and the plasma cleaning components (42) are arranged crosswise in sequence along a second direction, each of the cleaning brushes (41) is used to clean two adjacent groups of dust collecting electrodes (3) at the same time, and each group of the plasma cleaning components (42) is used to clean two adjacent groups of dust collecting electrodes (3) at the same time, wherein the second direction is perpendicular to the first direction.

11. The electrostatic dust collection module according to claim 9, characterized in that: The plasma cleaning assembly (42) comprises: A second power source (422); The plasma generating element (421) at least partially diffracts at the periphery of the dust collecting electrode (3), and the plasma generating element (421) is matched and connected with the second power source (422).

12. The electrostatic dust collection module according to claim 9, characterized in that: An insulating layer is provided on the outer periphery of the dust collecting electrode (3), and the insulating layer is made of modified polytetrafluoroethylene material.

13. The electrostatic dust collection module according to claim 12, characterized in that: The modified polytetrafluoroethylene material comprises polytetrafluoroethylene material and nano conductive carbon black material added during the mixing process.

14. The electrostatic dust collection module according to claim 13, characterized in that: The nano conductive carbon black material is mixed into the polytetrafluoroethylene material at a ratio of 2.5% to 4.5% during the mixing process.

15. An air purification device, characterized in that: The invention comprises the electrostatic dust collection module according to any one of claims 1 to 14.

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