Electrostatic dust collection apparatus and air purification device

Abstract

The present application relates to an electrostatic dust collection apparatus and an air purification device. The electrostatic dust collection apparatus comprises a first electrode sheet and a second electrode sheet, each in a strip shape. A plurality of first support protrusions are provided on two sides of a first surface of the first electrode sheet. A plurality of second support protrusions are provided on two sides of a first surface of the second electrode sheet. A second surface of the first electrode sheet is placed in contact with and stacked on the second support protrusions of the second electrode sheet and is then wound to form the electrostatic dust collection apparatus. The electrostatic dust collection apparatus of the present application, during winding formation, does not require specific tooling for maintaining a fixed gap, yet can still precisely maintain a fixed spacing. After winding formation, a layered support structure can be formed, thereby solving the problem that it is difficult to ensure spacing between two electrostatic dust collection sheets after spiral winding formation. In addition, a finished product can be assembled directly upon completion of winding without requiring subsequent processes such as adhesive dispensing and insertion of spacer combs.

Description

Electrostatic dust collecting device and air purification equipment

[0001] Cross-reference to Related Applications

[0002] This application claims priority to the Chinese Patent Application No. 202411286216.9, filed on September 13, 2024, and entitled "Electrostatic dust collecting device and air purification equipment", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0003] The present application relates to the technical field of electrostatic dust collection, in particular to an electrostatic dust collecting device and air purification equipment. BACKGROUND

[0004] The electrostatic dust collection technology module is generally divided into two parts:

[0005] <1> Corona device for ionizing air: the process of making air carry electric charge through high-voltage ionization is called generating electrode, ionizing electrode, corona device, etc.

[0006] <2> Dust collecting device for collecting particulate matter in air: the process of making moving charged particulate matter deposit on the electrode plate through the action of electric field force is called collecting electrode or dust collecting electrode.

[0007] The dust collector composed of metal plates (or conductive plates) has been quite mature, but its application level has limitations:

[0008] ① Due to reasons such as discharge sparking, the spacing between the bare metal electrode plates is too large, and a very high voltage cannot be applied, which makes it difficult to improve the one-time filtration efficiency of dust collection.

[0009] ② The collecting electrode module composed of rectangular metal plates is often in the shape of a cuboid, which wastes the effective area outside the inscribed square of the circle when matched with the circular fan and air duct cross section, and it is difficult to apply to industrial design models with a cylindrical appearance.

[0010] Therefore, some skilled persons have researched disc-shaped collecting electrodes in addition to rectangular collecting electrodes, and the basic principle is as follows:

[0011] The disc-shaped collecting electrode dust filter screen is composed of two electrode coils that do not contact each other, and a gap air duct is formed between the two electrodes. Different voltages are applied to the two electrodes to form an electric field between the two electrodes that is sufficient to adsorb charged ions. Dust with different electrode polarities moves towards different polarity electrodes under the action of electric field force and deposits on the electrodes, thereby achieving the purpose of separating dust and gas.

[0012] The disc-shaped collecting electrode has three advantages in principle:

[0013] ①The plate spacing can be very small, because the two pieces of electrode conductive layer is a certain thickness of the winding base material isolation, even if the application of high voltage (usually 3 ~ 10K), will not happen discharge spark phenomenon, high dust collection efficiency.

[0014] ②The disc winding electrode can be selected by the length and width of the electrode winding base material, according to the requirements of the air duct, winding into the required diameter size, thickness size of different disc electrode, simple operation, low price.

[0015] ③The disc-shaped collecting electrode can be compared with the circular air duct perfect match, in the past, rectangular collecting electrode in the circular fan air duct matching, need through the "round to square" current collector to connect, even so, rectangular collecting electrode between the wind speed, static pressure, flow field, etc. Different, leading to inconsistent purification efficiency.

[0016] But based on the above disc-shaped collecting electrode has such advantages, disc-shaped collecting electrode has not been widely used, the inventor in long-term test found that the core problem affecting the dust collection efficiency and assembly process, lies in how to ensure the uniform spacing between the winding layer, only uniform spacing, can form a balanced and stable electric field.

[0017] In the premise of not affecting the electric field intensity, the thickness of the winding layer base material itself is very thin (generally 0.1 ~ 0.5mm), after layer by layer winding extrusion, the spacing between the two electrodes is difficult to guarantee, often appear extrusion, stacking and other site, for this reason, there are three kinds of conventional methods:

[0018] ①Melt glue: as shown in figure 1, when the adjacent two pieces of electrostatic dust collection piece is spiral wound into shape by using a special tool, while maintaining the spacing, from its side, add the appropriate amount of hot melt glue 100, after the hot melt glue 100 cooling and solidification, can play a fixed electrostatic dust collection spacing role.

[0019] Disadvantages: <1> the special tool for maintaining the spacing itself structure is more complex, and the failure rate in the winding process is higher;

[0020] <2> the cooling time of dispensing is long, which is not conducive to the improvement of production efficiency.

[0021] <3> the position of dispensing has temperature requirements when cleaning the dust collecting electrode, and the position of dispensing is easy to be damaged.

[0022] <4> because the number of dispensing adhesive tape is limited, in the place without dispensing, because the length of the suspended dust collecting piece is long, because the thickness of the dust collecting piece is weak, when the dust collecting piece is deformed due to extrusion, collision and other external force, the dust collecting spacing will no longer be guaranteed, and there are two pieces together, the risk of short circuit.

[0023] ② Spacing piece: as shown in FIG. 2, before the adjacent two pieces of electrostatic dust collecting piece are wound, a spacing piece 200 of a certain thickness is pasted on one of the wound substrates, and the spacing piece 200 is pasted on the substrate at a certain distance. During the winding process, the spacing piece 200 plays a role of fixing the electrostatic dust collecting distance. Alternatively, the spacing piece 200 is directly inserted into the gap of the winding belt during the winding process to form a fixed distance.

[0024] Disadvantages: <1> The spacing piece 200 required for winding a circular collecting electrode is several thousand, and whether it is pasted or inserted, it is relatively complex.

[0025] <2> The pasting or insertion of the spacing piece 200 covers part of the space of the dust collecting electric field. Because the number of spacing pieces 200 is large, the dust collecting efficiency sacrificed by the collecting electrode also increases.

[0026] ③ Isolation comb: as shown in FIG. 3, a first electrostatic dust collecting piece and a second electrostatic dust collecting piece are wound into a double helical line structure with uniform spacing by using a tool, and a comb-shaped support plate 300 as shown in the figure is inserted into the formed double helical line structure. The comb-shaped support plate 300 is provided with a plurality of combs at equal intervals.

[0027] Disadvantages: <1> The specific tool for maintaining the spacing is relatively complex in structure, and the failure rate during the winding process is high.

[0028] <2> The slot width of the comb-shaped support plate 300 is affected by mold processing and strength life. The slot width (>1mm) is much larger than the thickness of the wound substrate, and a gap is formed between the substrate and the slot, which is not conducive to maintaining the fixed distance.

[0029] <3> The action of precisely inserting the comb-shaped support plate 300 into the wound double helical line substrate itself requires high requirements.

[0030] <4> Because the number of isolation combs is limited, the length of the dust collecting piece suspended at the place where the isolation comb is inserted is relatively long, and the thickness of the dust collecting piece is relatively weak. When the dust collecting piece is deformed due to external forces such as extrusion and collision, the dust collecting distance will no longer be guaranteed, and there is a risk of short circuiting of two pieces.

[0031] Based on the above analysis, it can be seen that the existing disc-shaped electrostatic dust collecting piece cannot effectively solve the problem of maintaining the distance between the two electrostatic dust collecting pieces after being spirally wound.

[0032] SUMMARY

[0033] The technical problems to be solved by the present application include, for example, overcoming the problem that the existing disc-shaped electrostatic dust collecting sheet cannot effectively maintain the spacing of the two electrostatic dust collecting sheets after spiral winding, providing an electrostatic dust collecting device and air purification equipment, which can accurately maintain the fixed spacing without using a specific tool to maintain the fixed spacing during winding, and can form a layer support structure after winding, solve the problem that the spacing of the two electrostatic dust collecting sheets is difficult to guarantee after spiral winding, and can be assembled into a finished product after winding, without subsequent process treatment such as dispensing and inserting isolation combs.

[0034] To solve the above technical problems, the present application provides an electrostatic dust collecting device, comprising: a first electrode sheet and a second electrode sheet respectively in the form of a strip, a plurality of first support bosses are arranged on both sides of a first surface of the first electrode sheet, a plurality of second support bosses are arranged on both sides of a first surface of the second electrode sheet, and a second surface of the first electrode sheet is wound to form the electrostatic dust collecting device after being contacted and stacked on the second support bosses of the second electrode sheet.

[0035] In an embodiment of the present application, the first electrode sheet comprises a first base material and a first conductive layer arranged on one side of the first base material, a plurality of first support bosses are arranged on both sides of the first conductive layer, and the distances between the plurality of first support bosses and the first conductive layer are the same.

[0036] The second electrode sheet comprises a second base material and a second conductive layer arranged on one side of the second base material, a plurality of second support bosses are arranged on both sides of the second conductive layer, and the distances between the plurality of second support bosses and the second conductive layer are the same.

[0037] In an embodiment of the present application, the first support bosses are arranged in the transverse direction of the first electrode sheet, the width of the side of the first support boss close to the first conductive layer is smaller than the width of the side of the first support boss away from the first conductive layer, and the side of the first support boss away from the first conductive layer is arranged in the form of a circular arc.

[0038] The second support bosses are arranged in the transverse direction of the second electrode sheet, the width of the side of the second support boss close to the second conductive layer is smaller than the width of the side of the second support boss away from the second conductive layer, and the side of the second support boss away from the second conductive layer is arranged in the form of a circular arc.

[0039] In an embodiment of the present application, the first support bosses are integrally formed with the first base material.

[0040] The second support bosses are integrally formed with the second base material.

[0041] In the embodiments of the present application, after the first electrode sheet and the second electrode sheet are wound and formed, the first support bosses and the second support bosses on the first electrode sheet and the second electrode sheet of adjacent layers are arranged in a staggered manner.

[0042] In the embodiments of the present application, two first support bosses in the transverse extension direction of the first electrode sheet and two second support bosses in the transverse extension direction of the second electrode sheet do not overlap.

[0043] In the embodiments of the present application, the first support bosses and the second support bosses are both prepared by a hot-pressing or adsorption process, the first support bosses form grooves on one side of the first substrate, the second support bosses form grooves on one side of the second substrate, the first support bosses and the second support bosses both have a support surface and an annular support side wall surrounding the support surface, and the annular support side wall is an inclined surface.

[0044] In the embodiments of the present application, the first support bosses and the second support bosses are both made of a hydrophobic material.

[0045] In the embodiments of the present application, a safety gap is reserved between the first support bosses and the first conductive layer;

[0046] a safety gap is reserved between the second support bosses and the second conductive layer;

[0047] The safety gap is greater than 1 mm.

[0048] In the embodiments of the present application, the first support bosses and the second support bosses are independent pieces and are attached to the first substrate and the second substrate, respectively.

[0049] In the embodiments of the present application, the distance P1 between two adjacent first support bosses on the same side and the thickness T1 of the first substrate satisfy the following relationship: P1 < 35T1.

[0050] The distance P2 between two adjacent second support bosses on the same side and the thickness T2 of the second substrate satisfy the following relationship: P2 < 35T2.

[0051] In the embodiments of the present application, the first conductive layer and the second conductive layer are a collecting electrode conductive layer and a repelling electrode conductive layer, respectively, and the width of the collecting electrode conductive layer is greater than the width of the repelling electrode conductive layer.

[0052] In the embodiments of the present application, further comprising: a support having a central axis, and the first electrode sheet and the second electrode sheet are spirally wound outside the central axis.

[0053] In the embodiments of the present application, the first substrate and the second substrate are made of insulating material.

[0054] In the embodiments of the present application, the first substrate and the second substrate are thin film materials.

[0055] In the embodiments of the present application, the first conductive layer and the second conductive layer are conductive films.

[0056] In the embodiments of the present application, the first conductive layer and the second conductive layer are conductive inks printed on the first substrate and the second substrate respectively.

[0057] In the embodiments of the present application, the width of the support surface is W, and 1.5mm≥W≥0.5mm.

[0058] In the embodiments of the present application, the support surface and the annular support sidewall form an angle θ, and 10°≥θ≥1°.

[0059] To solve the above technical problems, the present application also provides an air purification device comprising the electrostatic dust collection device.

[0060] The above technical solutions of the present application have the following advantages compared with the prior art:

[0061] The electrostatic dust collection device of the present application, by arranging the first support boss and the second support boss on the first electrode sheet and the second electrode sheet respectively, after the two electrode sheets are spirally wound and formed, the first support boss and the second support boss can realize layered support of the multiple electrode sheets, during the winding and forming, without using a specific tool to maintain the fixed gap, the fixed interval can be accurately maintained, after the winding and forming, the first support boss and the second support boss can form a layer support structure, solving the problem that the interval of the two electrostatic dust collection sheets after spirally winding and forming is difficult to guarantee, compared with the prior art, after winding is completed, the product can be assembled, without further processing of subsequent processes such as dispensing and inserting isolation comb;

[0062] And, the first support boss and the second support boss in the present application are arranged on the two sides of the first electrode sheet and the second electrode sheet respectively, the first support boss and the second support boss are arranged in the width direction of the first electrode sheet and the second electrode sheet, avoiding the conductive film or conductive coating on the substrate, without covering the space of the dust collection electric field, thus without sacrificing the dust collection efficiency of the collecting electrode, compared with the electrostatic dust collection device of the prior art, the dust collection efficiency is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0063] In order to make the content of the present application more easily understood, the following further describes the present application in detail according to specific embodiments of the present application and in conjunction with the drawings, in which:

[0064] Fig. 1 is a structural schematic diagram of a prior art electrostatic dust collecting device using hot melt glue to fix the electrode sheet;

[0065] Fig. 2 is a structural schematic diagram of a prior art electrostatic dust collecting device using a spacer sheet to separate the electrode sheets;

[0066] Fig. 3 is a structural schematic diagram of a prior art electrostatic dust collecting device using a comb-shaped support plate to separate the electrode sheets;

[0067] Fig. 4 is a side structural schematic diagram of the electrode sheet of the electrostatic dust collecting device of the present application before winding;

[0068] Fig. 5 is a top structural schematic diagram of the electrode sheet of the electrostatic dust collecting device of the present application before winding;

[0069] Fig. 6 is a side structural schematic diagram of the electrode sheet of the electrostatic dust collecting device of the present application after winding and a partially enlarged structural schematic diagram;

[0070] Fig. 7 is a top structural schematic diagram of the first electrode sheet of the present application;

[0071] Fig. 8 is a structural schematic diagram of the distance between two first support bosses on the first electrode sheet of the present application;

[0072] Fig. 9 is a structural schematic diagram of the first support boss integrally formed on the first base material of the present application;

[0073] Fig. 10 is a structural schematic diagram of the first support boss being formed and the first conductive layer being broken of the present application;

[0074] Fig. 11 is a side structural schematic diagram of the first electrode sheet of the present application;

[0075] Fig. 12 is a structural schematic diagram of the electrode sheet being wound on the support of the present application.

[0076] Explanation of the reference signs in the drawings: 1, first electrode sheet; 11, first base material; 12, first conductive layer; 2, second electrode sheet; 21, second base material; 22, second conductive layer; 3, first support boss; 4, second support boss; 5, groove; 6, shortest discharge path; 7, support;

[0077] 100, hot melt glue; 200, spacer sheet; 300, comb-shaped support plate. DETAILED DESCRIPTION

[0078] The present application will be further described below in conjunction with the drawings and specific embodiments so that those skilled in the art can better understand the present application and implement it.

[0079] Referring to FIGS. 4-6, the application discloses an electrostatic dust collecting device, comprising: a first electrode sheet 1 and a second electrode sheet 2 in strip shape respectively, a plurality of first support bosses 3 are arranged on both sides of the first surface of the first electrode sheet 1 respectively, a plurality of second support bosses 4 are arranged on both sides of the first surface of the second electrode sheet 2 respectively, and the second surface of the first electrode sheet 1 is wound to form the electrostatic dust collecting device after being contacted and stacked on the second support bosses 4 of the second electrode sheet 2.

[0080] As mentioned above, the disc-shaped electrostatic dust collecting device has many advantages compared with the plate-shaped electrostatic dust collecting device, and therefore, the disc-shaped electrostatic dust collecting device has become the focus of research and development in the field of dust removal and air purification. However, the three disc-shaped electrostatic dust collecting devices in the prior art all have certain defects. The inventor of the application designs the above-mentioned electrostatic dust collecting device in view of these defects, and analyzes the beneficial effects of the electrostatic dust collecting device according to the defects.

[0081] Firstly, in the process of winding, the specific tool needs to be used to maintain the spacing between the two electrostatic dust collecting sheets, which is very troublesome in winding and is easy to cause winding failure. After winding and forming, the hot melt adhesive technology or comb spacing device needs to be used to maintain the position of the two electrostatic dust collecting sheets.

[0082] In order to solve this problem, a plurality of first support bosses 3 and second support bosses 4 are arranged on one side of the first electrode sheet 1 and the second electrode sheet 2 before winding, and the plurality of first support bosses 3 and second support bosses 4 are arranged at intervals along the longitudinal extension direction of the first electrode sheet 1 and the second electrode sheet 2. Thus, the first support bosses 3 and the second support bosses 4 naturally form a partition structure when winding and forming, and a certain spacing can be maintained between the first electrode sheet 1 and the second electrode sheet 2 after winding and forming. Therefore, the specific tool does not need to be used for winding treatment, which can improve the success rate of winding. In addition, the first support bosses 3 and the second support bosses 4 can continuously support the separation of the first electrode sheet 1 and the second electrode sheet 2, and the product can be assembled after winding is completed, without the need for subsequent process treatment such as dispensing and inserting isolation combs.

[0083] Secondly, in the prior art, the spacing sheet is arranged between the two dust collecting sheets, for example, the Korean patent application KR20180009236A, the invention name is vortex type electric dust collector and air conditioner with the vortex type electric dust collector, which sets the spacing sheet structure. However, in actual use, the spacing sheet will cover the conductive layer of the dust collecting sheet. If the number of spacing sheets arranged is small, the supporting effect will be affected. If the number of spacing sheets arranged is large in order to ensure the supporting strength, a large number of spacing sheets covering the conductive layer will seriously affect the adsorption effect of the electrostatic integration device.

[0084] In order to solve this problem, the application does not adopt a continuous interval structure, but adopts a convex structure, and the first support boss 3 and the second support boss 4 are arranged along the width direction of the first electrode sheet 1 and the second electrode sheet 2. In the embodiment, the electrode sheet is composed of a base material and a conductive layer covering the base material, that is:

[0085] The first electrode sheet 1 comprises a first base material 11 and a first conductive layer 12 arranged on one side of the first base material 11, and the second electrode sheet 2 comprises a second base material 21 and a second conductive layer 22 arranged on one side of the second base material 21.

[0086] Specifically, a plurality of first support bosses 3 are arranged on both sides of the first conductive layer 12, and the plurality of first support bosses 3 are at the same distance from the first conductive layer 12; a plurality of second support bosses 4 are arranged on both sides of the second conductive layer 22, and the plurality of second support bosses 4 are at the same distance from the second conductive layer 22.

[0087] The discontinuous support structure of the application avoids the conductive film or conductive coating on the base material, which does not cover the dust collection electric field space, so that the dust collection efficiency of the collecting electrode is not sacrificed, and the dust collection efficiency of the electrostatic dust collection device is further improved compared with the prior art.

[0088] Specifically, the base material is made of insulating material, which can isolate the two conductive layers and prevent discharge and sparking between the two conductive layers. The conductive layer can be a conductive film (such as aluminum foil, copper foil, conductive fiber cloth, etc.), or it can be printed on the base material by conductive ink printing process.

[0089] When the first conductive layer 12 and the second conductive layer 22 are actually arranged, one of them is arranged as a collecting electrode conductive layer, and the other is arranged as a repelling electrode conductive layer. In order to improve the dust collection effect, generally, the width D1 of the collecting electrode conductive layer is greater than the width D2 of the repelling electrode conductive layer.

[0090] Specifically, because the first support boss 3 and the second support boss 4 are both arranged in the gap between the electrode sheets, the gap between the electrode sheets is allowed to pass the airflow in actual use, therefore, when arranging the first support boss 3 and the second support boss 4, the problem of air resistance also needs to be considered, referring to FIG. 7, taking the first support boss 3 arranged on the first electrode sheet 1 as an example, the structure of the first support boss 3 is limited, according to the principle of aerodynamics, in this embodiment, the first support boss 3 is arranged along the transverse direction of the first electrode sheet 1, the width d2 of the side of the first support boss 3 close to the first conductive layer 12 is smaller than the width d1 of the side of the first support boss 3 away from the first conductive layer 12, and the side of the first support boss 3 away from the first conductive layer 12 is arranged in a circular arc shape, when the airflow blows over the first support boss 3, because the circular arc structure forms a certain wind angle, it conforms to the principle of aerodynamics, and plays a role in reducing air resistance, and when the airflow blows along the side of the first support boss 3, it forms an inward angle, which is conducive to the convergence of the airflow on the first conductive layer 12 after flowing through the first support boss 3, and will not cause the airflow to disperse and avoid the first conductive layer 12, thereby ensuring the dust collection efficiency.

[0091] Similarly, when arranging the second support boss 4 on the second electrode sheet 2, the second support boss 4 is arranged along the transverse direction of the second electrode sheet 2, the width of the side of the second support boss 4 close to the second conductive layer 22 is smaller than the width of the side of the second support boss 4 away from the second conductive layer 22, and the side of the second support boss 4 away from the second conductive layer 22 is arranged in a circular arc shape.

[0092] Specifically, the spacing between two adjacent support bosses in the longitudinal direction determines the support effect between the two electrode sheets, in the actual design process, in order to improve the dust collection efficiency and reduce the air flow resistance, it is necessary to arrange the spacing between the two support bosses as large as possible under the premise of being able to support and separate the two electrode sheets, in order to achieve this effect, referring to FIG. 8, taking the two first support bosses 3 on the first electrode sheet 1 supporting the second electrode sheet 2 as an example, the spacing between the two adjacent first support bosses 3 is analyzed, the two first support bosses 3 on the first electrode sheet 1 and the second substrate 21 form a “simply supported beam mechanical model”, when the second electrode sheet 2 is wound to cover the first electrode sheet 1, the second support boss 4 exerts a pressure F on the center of the simply supported beam, causing the simply supported beam to deform and cause the spacing to fail, in order to meet the requirements, through experiments, when the spacing P of the two first support bosses 3 and the thickness T of the substrate satisfy P < 35T, sufficient support force can be provided, and the substrate will not deform.

[0093] Therefore, in the embodiment, the interval P1 of the two adjacent first support bosses 3 on the same side and the thickness T1 of the first substrate 11 satisfy the following relationship: P1 < 35T1.

[0094] Similarly, the interval P2 of the two adjacent second support bosses 4 on the same side and the thickness T2 of the second substrate 21 satisfy the following relationship: P2 < 35T2.

[0095] As described above, in the prior art, when the support is arranged between two dust collecting sheets by using a spacer, the spacer needs to be pasted or inserted between the two dust collecting sheets. However, a large number of spacers are needed for winding a disc-shaped electrostatic dust collecting device, and it is complicated to paste or insert the spacers. In the present application, if the first support boss 3 and the second support boss 4 are also pasted or inserted, the process is inevitably complicated. In order to solve this problem, referring to FIG. 9, in the embodiment, the support boss is integrally formed with the substrate, that is, the first support boss 3 is integrally formed with the first substrate 11, and the second support boss 4 is integrally formed with the second substrate 21. In this way, when the substrate is prepared, the support boss can be formed on the substrate, and it is not necessary to paste or insert the support boss when winding, so that the preparation efficiency of the product can be improved.

[0096] Specifically, the first substrate 11 and the second substrate 12 are thin film materials. According to the molding process, the first support boss 3 can be prepared by hot pressing or vacuum forming process of the first substrate 11. Similarly, the second support boss 4 can also be prepared by hot pressing or vacuum forming process of the second substrate 21. However, after molding, a groove 5 corresponding to the first support boss 3 and the second support boss 4 will be formed on the first substrate 11 and the second substrate 21. In order to prevent the first support boss 3 and the second support boss 4 from entering the groove 5 when winding, the positions of the first support boss 3 and the second support boss 4 need to be controlled in the embodiment.

[0097] Referring to FIG. 5, in the embodiment, the first support boss 3 and the second support boss 4 are staggered in space, that is, after the second face of the first electrode sheet 1 is in contact with and stacked on the second support boss 4 of the second electrode sheet 2, the second support boss 4 on the second electrode sheet 2 will not be stacked into the groove 5 on the opposite side of the first support boss 3 of the first electrode sheet 1. Similarly, the first support boss 3 on the first electrode sheet 1 will not be stacked into the groove 5 on the opposite side of the second support boss 4 of the second electrode sheet 2. Only when all the bosses are prevented from being stacked into the groove on the opposite side of another boss, the function of fixing the electrostatic dust collecting interval can be ensured.

[0098] In order to realize the above-mentioned spatial staggered distribution structure, on the one hand, the interval of the first support boss 3 located on both sides of the first electrode sheet 1 can be different from the interval of the second support boss 4 located on both sides of the second electrode sheet 2, that is, the first support boss 3 and the second support boss 4 are staggered in the transverse direction; on the other hand, the positions of the first support boss 3 and the second support boss 4 can also be set along the longitudinal extension direction of the first electrode sheet 1 and the second electrode sheet 2 through calculation, so that the first support boss 3 and the second support boss 4 can be staggered after the first electrode sheet 1 and the second electrode sheet 2 are wound.

[0099] Referring to FIGS. 5 and 10, since the first support boss 3 and the second support boss 4 are formed by processes such as hot pressing or plastic suction, in the process of forming the first support boss 3 and the second support boss 4, the edges of the support boss are stretched and formed, which can shorten the distance between the support boss and the conductive layer, and even cause the support boss and the conductive layer to break, resulting in the shortest discharge path 6 between the conductive layer on the first electrode sheet 1 and the second electrode sheet 2, which is prone to breakdown or discharge under a high-voltage electric field. Therefore, in the present embodiment, a safety gap is reserved between the first support boss 3 and the first conductive layer 12, and a safety gap is also reserved between the second support boss 4 and the second conductive layer 22. Specifically, the safety gap is greater than 1 mm, that is, G1, G2 > 1 mm, which ensures that the substrate will not cause the support boss and the conductive layer to break even if it is deformed during the hot pressing or plastic suction process.

[0100] Specifically, after the support boss is integrally formed with the substrate by hot pressing or plastic molding, a groove 5 is formed on the substrate. In actual use, it is also necessary to maintain a dry atmosphere in the groove 5 to prevent water accumulation in the groove 5. Referring to FIGS. 9 and 11, the first support boss 3 is taken as an example to illustrate the waterproof design. The first support boss 3 has a support surface and an annular support side wall surrounding the support surface. The width of the support surface is W, and the support surface and the annular support side wall form an angle θ. According to the actual processing technology, the size of the first support boss 3 is set to meet the minimum size of the molding process and mold processing, that is, 1.5 mm ≥ W ≥ 0.5 mm, and 10° ≥ θ ≥ 1°. In addition, the first support boss 3 is made of a hydrophobic material and has a high water contact angle WCA. Since the width of the support surface is small and the annular support side wall is an inclined surface, when the dust collection device is cleaned, the residual water will flow out of the pit and is not easy to form a "barrier lake". After blowing through the purifier air duct system, the surface is quickly dried, greatly shortening the time required for cleaning and maintenance, and improving the user experience.

[0101] Similarly, the second support boss 4 also has a support surface and an annular support side wall outside the support surface, the annular support side wall is an inclined surface, and the second support boss 4 also meets the above processing size and material.

[0102] In other embodiments, in order to avoid the generation of the groove 5, the first support boss 3 and the second support boss 4 can also be independent pieces, respectively attached to the first base material 11 and the second base material 21, and automatic labeling machines can also be used to realize the automation of labeling.

[0103] Referring to FIG. 12, the electrostatic dust collecting device also includes a support 7, the support 7 has a central axis, and the first electrode sheet 1 and the second electrode sheet 2 are spirally wound outside the central axis.

[0104] Specifically, the application also provides an air purification device including the electrostatic dust collecting device, and the air purification device can be applied in the technical field of air purification and air dust removal.

[0105] Obviously, the above embodiments are only examples for clear illustration, and are not limited to the embodiments. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments do not need to be exhausted, and the obvious changes or variations still fall within the protection scope of the application. Industrial applicability

[0106] The application provides an electrostatic dust collecting device and an air purification device, which can accurately maintain a fixed interval without using a specific tool for maintaining a fixed interval during winding and forming, solves the problem that it is difficult to guarantee the interval after two electrostatic dust collecting sheets are spirally wound and formed, and simplifies subsequent process treatment.

[0107] In addition, it can be understood that the electrostatic dust collecting device and the air purification device are reproducible and can be widely applied in the technical field of electrostatic dust collecting.

Claims

An electrostatic dust collecting apparatus is characterized by comprising: The electrostatic precipitator comprises: a first electrode strip and a second electrode strip, respectively in a strip shape, a plurality of first support bosses are arranged on both sides of a first surface of the first electrode strip, a plurality of second support bosses are arranged on both sides of a first surface of the second electrode strip, and a second surface of the first electrode strip is wound after being contacted with the second support bosses of the second electrode strip. According to the electrostatic precipitator of claim 1, wherein: the first electrode strip comprises a first base material and a first conductive layer arranged on one side of the first base material, a plurality of first support bosses are arranged on both sides of the first conductive layer, and the distances between the first support bosses and the first conductive layer are the same; the second electrode strip comprises a second base material and a second conductive layer arranged on one side of the second base material, a plurality of second support bosses are arranged on both sides of the second conductive layer, and the distances between the second support bosses and the second conductive layer are the same. According to the electrostatic precipitator of claim 2, wherein: the first support bosses are arranged along the transverse direction of the first electrode strip, the width of the side of the first support boss close to the first conductive layer is smaller than the width of the side of the first support boss away from the first conductive layer, and the side of the first support boss away from the first conductive layer is arranged in a circular arc shape; the second support bosses are arranged along the transverse direction of the second electrode strip, the width of the side of the second support boss close to the second conductive layer is smaller than the width of the side of the second support boss away from the second conductive layer, and the side of the second support boss away from the second conductive layer is arranged in a circular arc shape. According to the electrostatic precipitator of claim 2, wherein: the first support bosses are integrally formed with the first base material; the second support bosses are integrally formed with the second base material. The electrostatic dust collector according to claim 4, wherein After the first electrode strip and the second electrode strip are wound, the first support bosses and the second support bosses on the first electrode strip and the second electrode strip of adjacent layers are arranged in a staggered manner. The electrostatic dust collector according to claim 5, wherein Two first support bosses along the transverse extension direction of the first electrode strip and two second support bosses along the transverse extension direction of the second electrode strip do not overlap. The electrostatic dust collector according to claim 4, wherein The first support bosses and the second support bosses are both prepared by a hot-pressing or adsorption process, the first support bosses form grooves on one side of the first base material, the second support bosses form grooves on one side of the second base material, and the first support bosses and the second support bosses both have a support surface and a ring-shaped support side wall surrounding the support surface, and the ring-shaped support side wall is an inclined surface. The first support bosses and the second support bosses are both made of a hydrophobic material. The electrostatic dust collector according to claim 4, wherein According to the electrostatic precipitator of claim 4, wherein: a safety gap is reserved between the first support bosses and the first conductive layer; a safety gap is reserved between the second support bosses and the second conductive layer; the safety gap is greater than 1 mm. The first support bosses and the second support bosses are independent pieces and are respectively attached to the first base material and the second base material. The electrostatic dust collector according to claim 2, wherein ​ The electrostatic dust collector according to claim 2, wherein: The distance P1 between two adjacent first support bosses on the same side and the thickness T1 of the first substrate satisfy the following relationship: P1 < 35T1; The distance P2 between two adjacent second support bosses on the same side and the thickness T2 of the second substrate satisfy the following relationship: P2 < 35T2. The electrostatic dust collector according to claim 2, wherein The first conductive layer and the second conductive layer are a collecting electrode conductive layer and a repelling electrode conductive layer respectively, and the width of the collecting electrode conductive layer is greater than the width of the repelling electrode conductive layer. The electrostatic dust collector according to claim 1, wherein: Further comprising: A support having a central axis, and the first electrode sheet and the second electrode sheet are spirally wound outside the central axis. The electrostatic dust collecting apparatus according to any one of claims 2 to 12, characterized in that: The first substrate and the second substrate are made of insulating material. The electrostatic dust collecting apparatus according to any one of claims 2 to 12, characterized in that: The first substrate and the second substrate are thin film materials. The electrostatic dust collecting apparatus according to any one of claims 2 to 12, characterized in that: The first conductive layer and the second conductive layer are conductive adhesive films. The electrostatic dust collecting apparatus according to any one of claims 2 to 12, characterized in that: The first conductive layer and the second conductive layer are conductive inks printed on the first substrate and the second substrate respectively. The electrostatic dust collector according to claim 7, wherein The width of the support surface is W, and 1.5mm ≥ W ≥ 0.5mm. The electrostatic dust collector according to claim 7, wherein The support surface and the annular support side wall form an angle θ, and 10° ≥ θ ≥ 1°. An air purification apparatus characterized by: The electrostatic dust collector according to any one of claims 1-19.

Images