fan

Abstract

The present application provides a fan, comprising: a cover body, provided with an air inlet and an air outlet; fan blades, provided inside the cover body and configured to supply air to the air outlet; a dust collection assembly, provided inside the cover body, and the dust collection assembly is located between the air inlet and the air outlet, the dust collection assembly comprises multiple electrode sheets, the multiple electrode sheets are stacked and wound, and an electric field can be generated between adjacent electrode sheets to adsorb mediums carrying charges through the electric field. According to the fan provided by the present application, the dust collection assembly can adsorb mediums carrying charges in the passing airflow, and furthermore, this avoids the accumulation of dust inside the fan.

Description

FIELD

[0001] The present application relates to the field of household appliances, and particularly, relates to a fan.BACKGROUND

[0002] In related technologies, when a fan works, it can drive surrounding air to flow, but after the fan works for a long time, much dust will accumulate on fan blades, and this affects the comfort of the air supply of the fan.SUMMARY

[0003] The present application aims to solve at least one of the problems that exist in the prior art or related art.

[0004] To this end, the present application provides a fan.

[0005] In view of this, the present application provides a fan, comprising: a cover body, provided with an air inlet and an air outlet; fan blade, provided inside the cover body and configured to supply air to the air outlet; a dust collection assembly, provided inside the cover body, and the dust collection assembly is located between the air inlet and the air outlet, the dust collection assembly comprises a plurality of electrode sheets, the plurality of electrode sheets are stacked and wound, and an electric field can be generated between adjacent electrode sheets to adsorb mediums carrying charges through the electric field.

[0006] The fan provided by the present application comprises the cover body, the fan blades and the dust collection assembly; the fan blades and the dust collection assembly are both provided inside the cover body; and the cover body has a protection function for the fan blades and the dust collection assembly. The cover body comprises the air inlet and the air outlet; the dust collection assembly is provided between the air inlet and the air outlet; when the fan blades work, they supply air to the air outlet, and an airflow can flow between the air inlet and the air outlet, and then the airflow can pass through the dust collection assembly; and, the dust collection assembly comprises a plurality of electrode sheets, the plurality of electrode sheets are stacked and wound, and an electric field can be generated between adjacent electrode sheets, and then the dust collection assembly can adsorb mediums carrying charges in the passing airflow, and thus, the fan can conduct dust removal, disinfection and sterilization for the air while supplying air, achieve air purification, and furthermore, this avoids the accumulation of dust inside the fan and improves the comfort of the air supply of the fan.

[0007] The fan provided by the present application can further comprise the following additional features:

[0008] In some embodiments, the dust collection assembly is located between the fan blades and the air inlet.

[0009] In the embodiment, the dust collection assembly is provided between the fan blades and the air inlet; the airflow outside the fan enters the cover body through the air inlet, then passes through the dust collection assembly, and is subjected to the adsorption treatment of the dust collection assembly, then substances such as dust in the air are removed, and then the airflow is discharged out of the air outlet after passing through the fan blades, and this can prevent the dust from passing through the fan blades and further effectively solve the problem of dust accumulation on the fan blades.

[0010] In some embodiments, the fan further comprises an ion generator, provided in the cover body and configured to make the mediums carry charges, and the plurality of electrode sheets can form an electric field after being electrified and adsorb the mediums carrying charges through the electric field.

[0011] In the embodiment, the fan further comprises the ion generator; the ion generator is provided in the cover body; the ion generator can generate ions, and the mediums entering the cover body carry charges; the magnetic field generated after the electrode sheets are electrified can adsorb the mediums carrying charges, and then, the airflow passing through the fan is purified and the comfort of the air supply of the fan is improved. In addition, there is a certain gap between the plurality of electrode sheets of the dust collection assembly to form an electric field, and this can ensure the performance requirements of air supply, air blow, dust collection and purification of the fan under the precondition that the wind resistance coefficient of the fan meets conditions.

[0012] In some embodiments, the ion generator is provided at a side of the dust collection assembly, or between the air inlet and the dust collection assembly, or between the air outlet and the dust collection assembly, and the ion generator is provided close to the dust collection assembly.

[0013] In the embodiment, the ion generator is provided at one side of the dust collection assembly, or between the air inlet and the dust collection assembly, or between the air outlet and the dust collection assembly, and thus, the ion generator is located inside an air duct of the fan, the ion generator can effectively enable the mediums to carry charges, and meanwhile the distance that the mediums carrying negative ions near the ion generator diffuse to the dust collection assembly where the mediums are adsorbed is further shortened, and thus the dust collection efficiency is improved. And, the ion generator is provided close to the dust collection assembly, and this further shortens a migration distance in which the mediums carrying charges are adsorbed by the dust collection assembly, improves the dust collection efficiency, and prevents the charges generated by the ion generator from being blocked by other components, and avoids affecting the charging effect of particles.

[0014] In some embodiments, the ion generator comprises any one of a carbon brush positive ion generator, a carbon brush negative ion generator, a needle tip positive ion generator, a needle tip negative ion generator, a needle plate charging device, or a tungsten wire charging device.

[0015] In the embodiment, the ion generator can be any of the following: a carbon brush positive ion generator, a carbon brush negative ion generator, a needle tip positive ion generator, a needle tip negative ion generator, a needle plate charging device, a tungsten wire charging device.

[0016] In some embodiments, the fan further comprises a power supply device provided in the dust collection assembly or in the cover body, and the power supply device is configured to supply electricity to the electrode sheets.

[0017] In the embodiment, the fan further comprises the power supply device; the power supply device is provided in the dust collection assembly or in the cover body; the power supply device is connected to the electrode sheets, and configured to provide high-voltage power supply to the electrode sheets, and thus an electric field is generated by the plurality of electrode sheets to achieve the adsorption of the mediums carrying charges.

[0018] In some embodiments, the power supply device comprises a positive connecting electrode and a negative connecting electrode; the plurality of electrode sheets comprise positive electrode sheets and negative electrode sheets, and the positive connecting electrode is electrically connected to the positive electrode sheets and the negative connecting electrode is electrically connected to the negative electrode sheets.

[0019] In the embodiment, the power supply device comprises the positive connecting electrode and the negative connecting electrode; the plurality of electrode sheets comprise the positive electrode sheets and the negative electrode sheets, and the positive connecting electrode of the power supply device is electrically connected to the positive electrode sheets and the negative connecting electrode is electrically connected to the negative electrode sheets, and the power supply device can provide high-voltage power supply to both the positive electrode sheets and the negative electrode sheets simultaneously, and thus an electric field is generated at the gaps between the positive electrode sheets and the negative electrode sheets, and the adsorption of the mediums carrying charges is achieved.

[0020] In some embodiments, the positive electrode sheets and the negative electrode sheets are alternately stacked in sequence; when the electrode sheets are electrified, an electric field can be formed between the positive electrode sheets and the negative electrode sheets.

[0021] In the embodiment, the positive electrode sheets and the negative electrode sheets are alternately stacked in sequence, and an electric field is formed at the gap between a positive electrode sheet and a negative electrode sheet which are adjacent to each other and stacked, and thereby an adsorption force is generated on the mediums carrying charges.

[0022] In some embodiments, the electrode sheets are flexible electrode sheets.

[0023] In the embodiment, the electrode sheets are flexible electrode sheets; after being stacked, the plurality of electrode sheets can be wound into various forms, then the space occupied by the electrode sheets is reduced, and the applicability of the dust collection assembly is improved to meet the requirements of different fans for different electric field forms.

[0024] In some embodiments, the dust collection assembly further comprises a frame detachably arranged inside the cover body, and the plurality of electrode sheets are stacked and wound in the frame in sequence.

[0025] In the embodiment, the dust collection assembly comprises the frame detachably arranged inside the cover body, and the plurality of electrode sheets are stacked and wound in the frame in sequence, and the shapes of the electrode sheets after winding are more firm, the electrode sheets after winding are prevented from scattering, and furthermore, the reliability of the electric field generated by the electrode sheets is improved and the dust removing effect of the fan is ensured.

[0026] In some embodiments, the plurality of electrode sheets are stacked in sequence and then convolved around the center of the frame to form a spiral dust collecting structure; or the plurality of electrode sheets are stacked in sequence and stacked along the circumferential direction of the frame in a reciprocating manner.

[0027] In the embodiment, after the plurality of electrode sheets are stacked in sequence, they are convolved around the center of the frame to form the spiral dust collecting structure, and this reduces the occupation of space, and improves the absorption effect for the mediums carrying charges. Or, after the plurality of electrode sheets are stacked in sequence, they are stacked along the circumferential direction of the frame in a reciprocating manner, for example, after the plurality of electrode sheets are stacked, and after they are wound clockwise for one circle along the circumferential direction of the frame, they bend counterclockwise, and are stacked on the surface of the previous circle in the counterclockwise direction, and thus they are wound in a reciprocating manner to form the dust collection assembly. Certainly, it may further be this case: after the plurality of electrode sheets are stacked and after they are wound counterclockwise for one circle along the circumferential direction of the frame, they bend clockwise, and are stacked on the surface of the previous circle in the clockwise direction, and thus they are wound in a reciprocating manner to form the dust collection assembly.

[0028] In some embodiments, in the case that the plurality of electrode sheets are stacked in sequence and then convolved around the center of the frame to form a spiral dust collecting structure, the electric field is distributed radially taking the winding center of the electrode sheets as a circle center, and the directions of the electric fields generated between adjacent stacked electrode sheets are different.

[0029] In the embodiment, after the plurality of electrode sheets are stacked and wound, gaps are formed between adjacent stacked electrode sheets, the spiral dust collecting structure makes the electric fields in the gaps distribute in a disperse manner taking the winding center of the electrode sheets as a circle center, and then, the distance between the gaps and the winding center gradually increases with the increasing of the number of winding turns, and thus, the dust collection volume is enlarged and the dust collection capacity is improved. The spiral winding method makes the directions of the electric fields generated in adjacent gaps different.

[0030] In some embodiments, in the case that the plurality of electrode sheets are stacked in sequence and then convolved around the center of the frame to form a spiral dust collecting structure, the electric fields are distributed in a disperse manner in a radial direction taking the winding center of the electrode sheets as a circle center.

[0031] In some embodiments, the frame further comprises: a first frame, and the first frame comprises a first support ring, and the electrode sheets are wound around the outer sidewall of the first support ring; a second frame, detachably connected to the first frame, and the second frame comprises a second support ring, and in the case that the first frame is buckled to the second frame, the second support ring penetrates and is provided in the first support ring.

[0032] In the embodiment, the frame further comprises the first frame and the second frame, and the first frame is detachably connected to the second frame; the first frame is provided with the first support ring, and the second frame is provided with the second support ring; when the dust collection assembly is assembled, the electrode sheets are firstly wound around the first support ring, then buckled to the second frame, and the second support ring of the second frame is inserted into the first support ring, and then the limitation of the electrode sheets is achieved through the first frame and second frame, this facilitates the winding and packaging of the electrode sheets, and meanwhile can further prevent the electrode sheets from scattering after winding; the wires connecting the electrode sheets and the input end of the high-voltage power supply can further be hidden to ensure safety during operation.

[0033] In some embodiments, the frame comprises an insulating frame; and / or one side of the frame is provided with a grid, and the grid is located at the side surface of the electrode sheets.

[0034] In the embodiment, the frame comprises the insulating frame, and this improves the safety performance and prevents current leakage of the dust collection assembly. One side of the frame is provided with the grid, and the electrode sheets are located at the side surface of the grid; the grid can fix the electrode sheets, and this prevents the electrode sheets from falling or scattering from both sides of the frame, ensures the stability of the dust collection assembly, and further ensures the stability of the electric field.

[0035] In some embodiments, any of the electrode sheets comprises a flexible insulating layer and a conductive layer; the flexible insulating layer is provided with a plurality of limiting parts, wherein the plurality of limiting parts are spaced-apart, and the conductive layer is provided at one side of the flexible insulating layer, the limiting parts are located between adjacent stacked conductive layers to create gaps between adjacent conductive layers, and an electric field is generated in the gaps in the case that electricity is supplied.

[0036] In the embodiment, the electrode sheet comprises the flexible insulating layer and the conductive layer. The conductive layer is provided at one side of the flexible insulating layer, and plurality of limiting parts are provided on the flexible insulating layer, and the plurality of limiting parts are arranged at intervals; in the case that the plurality of electrode sheets are stacked, the limiting parts are located between adjacent conductive layers, and this provides a sufficient gap between the adjacent conductive layers, ensures that the gap between the adjacent conductive layers is fixed, avoids the contact between the adjacent conductive layers, and further ensures the stability of the electric field generated by the electrode sheets, and achieves the adsorption of the mediums such as dust; in addition, it is unnecessary to additionally dispose a card strip or apply a hot melt adhesive to fix the electrode sheets, and this greatly lowers the process difficulty and the processing cost of the dust collection assembly, and does not affect the appearance of the dust collection assembly; at the same time, the disposing of the limiting parts further increases the spacing between adjacent conductive layers, and then increases the dust collection area of the dust collection assembly and improves the effects of dust removal, disinfection and sterilization.

[0037] In some embodiments, the conductive layer and the flexible insulating layer are detachably stacked, or the conductive layer is connected to the flexible insulating layer.

[0038] In the embodiment, in the case that the conductive layer and the flexible insulating layer are detachably stacked, it can facilitate the cleaning and maintenance of the dust collection assembly, improve the convenience of dust filtration and cleaning; moreover, detachably arranging the conductive layer and the flexible insulating layer can further make the shape of the dust collection assembly changeable, that is, the conductive layer and flexible insulating layer can be disassembled and wound into different shapes according to the flexibility characteristic, and therefore, the applicability of the dust collection assembly in different structures is improved and the needs of the dust collection assembly on different electric field forms are satisfied. In the case that the conductive layer is connected to the flexible insulating layer, it can connect the conductive layer with the flexible insulating layer tightly, and the conductive layer and the flexible insulating layer can move together, and the electrode sheets have a self-adaptive characteristic when the electrode sheets are convolved or bent.

[0039] In some embodiments, in the case that the conductive layer is connected to the flexible insulating layer, the conductive layer is coated or adhered to the flexible insulating layer.

[0040] In the embodiment, the conductive layer is coated or adhered to the flexible insulating layer, the connecting strength between the conductive layer and the flexible insulating layer is enhanced, and the convenience during the winding is ensured.

[0041] In some embodiments, the electrode sheet further comprises an insulating substrate, and the conductive layer is provided on the insulating substrate; in the case that the conductive layer is connected to the flexible insulating layer, the insulating substrate is provided on the flexible insulating layer.

[0042] In the embodiment, the electrode sheet further comprises the insulating substrate, and the conductive layer is provided on the insulating substrate, the insulating substrate is further connected to the flexible insulating layer, and the conductive layer is connected to the flexible insulating layer through the insulating substrate, and this helps in the manufacturing of the electrode sheets.

[0043] In some embodiments, the limiting part comprises a protrusion, and the protrusion is provided at one side or different sides of the flexible insulating layer.

[0044] In the embodiment, the limiting part comprises the protrusion, and the protrusion is provided at one side or different sides of the flexible insulating layer; the arrangement of the protrusion can increase the spacing between adjacent electrode sheets when the plurality of electrode sheets are stacked, and this firstly ensures the stability of the electric field generated by the electrode sheets, and secondly increases the dust collection space of the dust collection assembly, and thus the dust collection effect is improved. The protrusion can be provided at one side or two sides of the flexible insulating layer.

[0045] In some embodiments, the protrusion is provided at one side of the flexible insulating layer, and the conductive layer is provided at the other side of the flexible insulating layer.

[0046] In the embodiment, the protrusion and the conductive layer are respectively located at the two sides of the flexible insulating layer, and this further facilitates the connection between the conductive layer and the flexible insulating layer, and lowers the processing difficulty.

[0047] In some embodiments, the height of the protrusion is greater than or equal to 0.1mm, and less than or equal to 10mm.

[0048] In the embodiment, the height of the protrusion is set between 0.1mm and 10mm, and this ensures the spacing effect between adjacent electrode sheets.

[0049] In some embodiments, the number of fan blade is one or multiple, and in the case that the number of fan blade is multiple, the plurality of fan blades are arranged at an interval along the axis of rotation.

[0050] In the embodiment, the number of fan blade is one or multiple, and in the case that the number of fan blades is multiple, the plurality of fan blades are arranged at an interval along the axis of rotation, and this can provide multiple air supplying methods.

[0051] In some embodiments, the rotating directions of at least two fan blades are the same or different from each other.

[0052] In the embodiment, the rotating directions of at least two fan blades are the same or different from each other; in the case that the rotating directions of at least two fan blades are the same, the air supplying distance can be increased; and in the case that the rotating directions of at least two fan blades are different from each other, a windless air supply can be formed.

[0053] In some embodiments, the dust collection assembly, the ion generator, and the fan blades are coaxially distributed along the direction of the rotating axis of the fan blades, and this improves the purification and dust collection efficiency of the fan.

[0054] The additional aspects and advantages of the present application will be obvious in the following description, or can be understood through the practice of the present application.BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The above and / or additional aspects and advantages of the present application will be obvious and understood easily from the following description of the embodiments in combination with the accompanying drawings. And, Fig. 1 is a first schematic view of the structure of a fan according to an embodiment of the present application; Fig. 2 is a second schematic view of the structure of a fan according to an embodiment of the present application; Fig. 3 is a first schematic view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 4 is a second schematic view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 5 is a third schematic view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 6 is an exploded view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 7 is an exploded view of the structure of a frame according to an embodiment of the present application; Fig. 8 is a schematic view of the structure of an ion generator according to an embodiment of the present application; Fig. 9 is a first schematic view of the structure of a flexible insulating layer according to an embodiment of the present application; Fig. 10 is a second schematic view of the structure of a flexible insulating layer according to an embodiment of the present application; Fig. 11 is a third schematic view of the structure of a flexible insulating layer according to an embodiment of the present application; Fig. 12 is a schematic view of the structure of a conductive layer according to an embodiment of the present application; Fig. 13 is a fourth schematic view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 14 is a fifth schematic view of the structure of a dust collection assembly according to an embodiment of the present application; Fig. 15 is a schematic block diagram of an electrode sheet according to an embodiment of the present application; and Fig. 16 is a schematic block diagram of a power supply device according to an embodiment of the present application.

[0056] And, the corresponding relations between the reference signs and the component names in Fig. 1 to Fig. 16 are as follows: 1: cover body, 10: air inlet, 12: air outlet, 2: fan blade, 3: dust collection assembly, 30: electrode sheet, 300: flexible insulating layer, 301: limiting part, 3011: protrusion, 302: conductive layer, 3020: electric connecting part, 303: insulating substrate, 304: positive electrode sheet, 305: negative electrode sheet, 32: frame, 320: first frame, 322: first support ring, 324: second frame, 326: second support ring, 328: grid, 4: ion generator, 5: power supply device, 50: positive connecting electrode, and 52: negative connecting electrode.DETAILED DESCRIPTION

[0057] To more clearly understand the above purposes, features and advantages of the present application, the present application will be further detailed hereinafter in combination with the accompanying drawings and embodiments. It should be indicated that in the case of no conflict, the embodiments and the features in the embodiments of the present application can be combined with each other.

[0058] Many details are illustrated in the following description for the convenience of a thorough understanding of the present application, but the present application can further be implemented using other embodiments other than these described herein. Therefore, the protection scope of the present application is not limited to the specific embodiments disclosed in the following text.

[0059] A fan according to some embodiments of the present application is described in the following by referring to Fig. 1 to Fig. 16.

[0060] As shown in Fig. 1 and Fig. 2, according to an embodiment of the present application, the present application provides a fan, comprising: a cover body 1 and a dust collection assembly 3.

[0061] In some embodiments, the cover body 1 is provided with an air inlet 10 and an air outlet 12; fan blades 2 are provided inside the cover body 1 and configured to supply air to the air outlet 12; a dust collection assembly 3 is provided inside the cover body 1, and the dust collection assembly 3 is located between the air inlet 10 and the air outlet 12, the dust collection assembly 3 comprises multiple electrode sheets 30, the multiple electrode sheets 30 are stacked and wound, and an electric field can be generated between adjacent electrode sheets 30 to adsorb mediums carrying charges through the electric field.

[0062] The fan provided by the present application comprises the cover body 1, the fan blades 2 and the dust collection assembly 3; the fan blades 2 and the dust collection assembly 3 are both provided inside the cover body 1; and the cover body 1 has a protection function for the fan blades 2 and the dust collection assembly 3. The cover body 1 comprises the air inlet 10 and the air outlet 12; the dust collection assembly 3 is provided between the air inlet 10 and the air outlet 12; when the fan blades 2 work, they supply air to the air outlet 12, and an airflow can flow between the air inlet 10 and the air outlet 12, and then the airflow can pass through the dust collection assembly 3; and, the dust collection assembly 3 comprises multiple electrode sheets 30, the multiple electrode sheets 30 are stacked and wound, and an electric field can be generated between adjacent electrode sheets 30, and then the dust collection assembly 3 can adsorb mediums carrying charges in the passing airflow, and thus, the fan can conduct dust removal, disinfection and sterilization for the air while supplying air, achieve air purification, and furthermore, this avoids the accumulation of dust inside the fan and improves the comfort of the air supply of the fan.

[0063] It is understandable that the dust collection assembly 3 comprises multiple electrode sheets 30, after being supplied with a high-voltage power supply, the multiple electrode sheets 30 can generate an electric field, and the electric field can adsorb dust carrying charges and meanwhile further has the function of sterilization and disinfection.

[0064] In some embodiments, the dust collection assembly 3 is located between the fan blades 2 and the air inlet 10.

[0065] In the embodiment, the dust collection assembly 3 is provided between the fan blades 2 and the air inlet 10; the airflow outside the fan enters the cover body 1 through the air inlet 10, then passes through the dust collection assembly 3, and is subjected to the adsorption treatment of the dust collection assembly 3, then substances such as dust in the air are removed, and then the airflow is discharged out of the air outlet 12 after passing through the fan blades 2, and this can prevent the dust from passing through the fan blades 2 and further effectively solve the problem of dust accumulation on the fan blades 2.

[0066] As shown in Fig. 1 and Fig. 8, in some embodiments, the fan further comprises an ion generator 4, provided in the cover body 1 and configured to make the mediums carry charges, and the multiple electrode sheets 30 can form an electric field after being electrified and adsorb the mediums carrying charges through the electric field.

[0067] In the embodiment, the fan further comprises the ion generator 4; the ion generator 4 is provided in the cover body 1; the ion generator 4 can generate ions, and the mediums entering the cover body 1 carry charges; the magnetic field generated after the electrode sheets 30 are electrified can adsorb the mediums carrying charges, and then, the airflow passing through the fan is purified and the comfort of the air supply of the fan is improved. In addition, there is a certain gap between the multiple electrode sheets 30 of the dust collection assembly 3 to form an electric field, and this can ensure the performance requirements of air supply, air blow, dust collection and purification of the fan under the precondition that the wind resistance coefficient of the fan meets conditions.

[0068] It is understandable that the mediums comprise substances such as dust, bacteria, viruses, or other aerosols.

[0069] In some embodiments, the ion generator 4 is provided at one side of the dust collection assembly, or between the air inlet 10 and the dust collection assembly 3, or between the air outlet 12 and the dust collection assembly 3, and the ion generator 4 is provided close to the dust collection assembly 3.

[0070] In the embodiment, the ion generator 4 is provided at one side of the dust collection assembly 3, or between the air inlet 10 and the dust collection assembly 3, or between the air outlet 12 and the dust collection assembly 3, and thus, the ion generator 4 is located inside an air duct of the fan, the ion generator 4 can effectively enable the mediums to carry charges, and meanwhile the distance that the mediums carrying negative ions near the ion generator 4 diffuse to the dust collection assembly 3 where the mediums are adsorbed is further shortened, and thus the dust collection efficiency is improved. And, the ion generator 4 is provided close to the dust collection assembly 3, and this further shortens a migration distance in which the mediums carrying charges are adsorbed by the dust collection assembly 3, improves the dust collection efficiency, and prevents the charges generated by the ion generator 4 from being blocked by other components, and avoids affecting the charging effect of particles.

[0071] In some embodiments, the ion generator 4 comprises any one of a carbon brush positive ion generator, a carbon brush negative ion generator, a needle tip positive ion generator, a needle tip negative ion generator, a needle plate charging device, or a tungsten wire charging device.

[0072] In the embodiment, the ion generator 4 can be any of the following: a carbon brush positive ion generator, a carbon brush negative ion generator, a needle tip positive ion generator, a needle tip negative ion generator, a needle plate charging device, a tungsten wire charging device.

[0073] As shown in Fig. 3 and Fig. 5, in some embodiments, the fan further comprises a power supply device 5 provided in the dust collection assembly 3 or in the cover body 1, and the power supply device 5 is configured to supply electricity to the electrode sheets 30.

[0074] In the embodiment, the fan further comprises the power supply device 5; the power supply device 5 is provided in the dust collection assembly 3 or in the cover body 1; the power supply device 5 is connected to the electrode sheets 30, and configured to provide high-voltage power supply to the electrode sheets 30, and thus an electric field is generated by the electrode sheets 30 to achieve the adsorption of the mediums carrying charges.

[0075] As shown in Fig. 16, in some embodiments, the power supply device 5 comprises a positive connecting electrode 50 and a negative connecting electrode 52; multiple electrode sheets 30 comprise positive electrode sheets 304 and negative electrode sheets 305, and the positive connecting electrode 50 is electrically connected to the positive electrode sheets 304 and the negative connecting electrode 52 is electrically connected to the negative electrode sheets 305.

[0076] In the embodiment, the power supply device 5 comprises the positive connecting electrode 50 and the negative connecting electrode 52; the multiple electrode sheets 30 comprise the positive electrode sheets 304 and the negative electrode sheets 305, and the positive connecting electrode 50 of the power supply device 5 is electrically connected to the positive electrode sheets 304 and the negative connecting electrode 52 is electrically connected to the negative electrode sheets 305, and the power supply device 5 can provide high-voltage power supply to both the positive electrode sheets 304 and the negative electrode sheets 305 simultaneously, and thus an electric field is generated at the gaps between the positive electrode sheets 304 and the negative electrode sheets 305, and the adsorption of the mediums carrying charges is achieved.

[0077] As shown in Fig. 6, in some embodiments, the positive electrode sheets 304 and the negative electrode sheets 305 are alternately stacked in sequence; when the electrode sheets 30 are electrified, an electric field can be formed between the positive electrode sheets 304 and the negative electrode sheets 305.

[0078] In the embodiment, the positive electrode sheets 304 and the negative electrode sheets 305 are alternately stacked in sequence, and an electric field is formed at the gap between a positive electrode sheet 304 and a negative electrode sheet 305 which are adjacent to each other and stacked, and thereby an adsorption force is generated on the mediums carrying charges.

[0079] In a specific application, after the positive electrode sheet 304 and the negative electrode sheet 305 are stacked, they are wound around the frame 32.

[0080] As shown in Fig. 5 and Fig. 6, in some embodiments, the electrode sheets 30 are flexible electrode sheets, and the multiple electrode sheets 30 are stacked and wound in the frame in sequence.

[0081] In the embodiment, the electrode sheets 30 are flexible electrode sheets; when after being stacked, the multiple electrode sheets 30 can be wound into various forms, then the space occupied by the electrode sheets 30 is reduced, and the applicability of the dust collection assembly 3 is improved to meet the requirements of different fans for different electric field forms.

[0082] It is understandable that the electrode sheets 30 are flexible electrode sheets, i.e., the shape of the electrode sheets 30 is changeable, and the electrode sheets 30 can be bent according to specific practical use needs to adjust the shape of the electrode sheets 30. For example, the electrode sheets 30 are bent into a circular structure; for example, the electrode sheets 30 are bent into a structure in an "S" shape; for example, the electrode sheets 30 are bent into a spiral structure. That is, by bending the electrode sheets 30, the requirements for the electric field area generated during the operation of the dust collection component 3 can be satisfied, and thus, compared with the arrangement in related technologies that multiple sets of electrode pieces are arranged in an alternating parallel way, the present application helps reduce the number of the electrode sheets 30, can simplify the assembly process of the dust collection assembly 3, lower the production cost of the dust collection assembly 3, generate a larger electric field area using fewer electrode sheets 30, and has the advantages of diverse shapes and strong adaptability.

[0083] As shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7, in some embodiments, the dust collection assembly 3 further comprises a frame 32 detachably arranged inside the cover body 1, and the multiple electrode sheets 30 are stacked and wound in the frame 32 in sequence.

[0084] In the embodiment, the dust collection assembly 3 comprises the frame 32 detachably arranged inside the cover body 1, and the multiple electrode sheets 30 are stacked and wound in the frame 32 in sequence, and the shapes of the electrode sheets 30 after winding are more firm, the electrode sheets 30 after winding are prevented from scattering, and furthermore, the reliability of the electric field generated by the electrode sheets 30 is improved and the dust removing effect of the fan is ensured.

[0085] In some embodiments, the power supply device 5 is provided on the middle part of the frame 32.

[0086] In some embodiments, the multiple electrode sheets 30 are stacked in sequence and then convolved around the center of the frame 32 to form a spiral dust collecting structure; or the multiple electrode sheets 30 are stacked in sequence and stacked along the circumferential direction of the frame 32 in a reciprocating manner.

[0087] In the embodiment, after the multiple electrode sheets 30 are stacked in sequence, they are convolved around the center of the frame 32 to form the spiral dust collecting structure, and this reduces the occupation of space, and improves the absorption effect for the mediums carrying charges. Or, after the multiple electrode sheets 30 are stacked in sequence, they are stacked along the circumferential direction of the frame 32 in a reciprocating manner, for example, after the multiple electrode sheets 30 are stacked, and after they are wound clockwise for one circle along the circumferential direction of the frame 32, they bend counterclockwise, and are stacked on the surface of the previous circle in the counterclockwise direction, and thus they are wound in a reciprocating manner to form the dust collection assembly 3. Certainly, it may further be this case: after the multiple electrode sheets 30 are stacked and after they are wound counterclockwise for one circle along the circumferential direction of the frame 32, they bend clockwise, and are stacked on the surface of the previous circle in the clockwise direction, and thus they are wound in a reciprocating manner to form the dust collection assembly 3.

[0088] As shown in Fig. 13 and Fig. 14, in some embodiments, in the case that the multiple electrode sheets 30 are stacked in sequence and then convolved around the center of the frame 32 to form a spiral dust collecting structure, the electric field is distributed radially taking the winding center of the electrode sheets 30 as a circle center, and the directions of the electric fields generated between adjacent stacked electrode sheets 30 are different.

[0089] In the embodiment, after the multiple electrode sheets 30 are stacked and wound, gaps are formed between adjacent stacked electrode sheets 30, the spiral dust collecting structure makes the electric fields in the gaps distribute in a disperse manner taking the winding center of the electrode sheets 30 as a circle center, and then, the distance between the gaps and the winding centergradually increases with the increasing of the number of winding turns, and thus, the dust collection volume is enlarged and the dust collection capacity is improved. The spiral winding method makes the directions of the electric fields generated in adjacent gaps different.

[0090] And, as shown in Fig. 13, the dashed arrow indicates the direction of the electric field, and in some embodiments, the electric field is arranged in a divergent manner along a normal direction from the winding center of electrode sheets 30. As shown in Fig. 14, in the stacked adjacent electrode sheets 30, an electric field is formed pointing from the positive electrode sheet 304 to the negative electrode sheet 305, and the directions of adjacent electric fields are different.

[0091] As shown in Fig. 3, Fig. 4 and Fig. 7, in some embodiments, the frame 32 further comprises: a first frame 320, and the first frame 320 comprises a first support ring 322, and the electrode sheets 30 are wound around the outer sidewall of the first support ring 322; a second frame 324, detachably connected to the first frame 320, and the second frame 324 comprises a second support ring 326, and in the case that the first frame 320 is buckled to the second frame 324, the second support ring 326 penetrates and is provided in the first support ring 322.

[0092] In the embodiment, the frame 32 further comprises the first frame 320 and the second frame 324, and the first frame 320 is detachably connected to the second frame 324; the first frame 320 is provided with the first support ring 322, and the second frame 324 is provided with the second support ring 326; when the dust collection assembly 3 is assembled, the electrode sheets 30 are firstly wound around the first support ring 322, then buckled to the second frame 324, and the second support ring 326 of the second frame 324 is inserted into the first support ring 322, and then the limitation of the electrode sheets 30 is achieved through the first frame 320 and second frame 324, this facilitates the winding and packaging of the electrode sheets 30, and meanwhile can further prevent the electrode sheets 30 from scattering after winding; the wires connecting the electrode sheets 30 and the input end of the high-voltage power supply can further be hidden to ensure safety during operation.

[0093] In some embodiments, the power supply device 5 is provided inside the first support ring 322.

[0094] In some embodiments, the frame 32 comprises an insulating frame; and / or one side of the frame 32 is provided with a grid 328, and the grid 328 is located at the side surface of the electrode sheets 30.

[0095] In the embodiment, the frame 32 comprises the insulating frame, and this improves the safety performance and prevents current leakage of the dust collection assembly 3. One side of the frame 32 is provided with the grid 328, and the electrode sheets 30 are located at the side surface of the grid 328; the grid 328 can fix the electrode sheets 30, and this prevents the electrode sheets 30 from falling or scattering from both sides of the frame 32, ensures the stability of the dust collection assembly 3, and further ensures the stability of the electric field.

[0096] In some embodiments, after the electrode sheets 30 and the frame 32 are assembled, the two sides of the electrode sheets 30 are both provided with the grids 328.

[0097] In some embodiments, any of the electrode sheets 30 comprises a flexible insulating layer 300 and a conductive layer 302; the flexible insulating layer 300 is provided with multiple spaced-apart limiting parts 301, and the conductive layer 302 is provided at one side of the flexible insulating layer 300, the limiting parts 301 are located between adjacent stacked conductive layers 302 to create gaps between adjacent conductive layers 302, and an electric field is generated in the gaps in the case that electricity is supplied.

[0098] In the embodiment, as shown in Fig. 9, Fig. 10, Fig. 11 and Fig. 12, the electrode sheets 30 comprises the flexible insulating layer 300 and the conductive layer 302. The conductive layer 302 is provided at one side of the flexible insulating layer 300, and multiple limiting parts 301 are provided on the flexible insulating layer 300, and the multiple limiting parts 301 are arranged at intervals; in the case that the multiple electrode sheets 30 are stacked, the limiting parts 301 are located between adjacent conductive layers 302, and this provides a sufficient gap between the adjacent conductive layers 302, ensures that the gap between the adjacent conductive layers 302 is fixed, avoids the contact between the adjacent conductive layers 302, and further ensures the stability of the electric field generated by the electrode sheets 30, and achieves the adsorption of the mediums such as dust; in addition, it is unnecessary to additionally dispose a card strip or apply a hot melt adhesive to fix the electrode sheets 30, and this greatly lowers the process difficulty and the processing cost of the dust collection assembly 3, and does not affect the appearance of the dust collection assembly 3; at the same time, the disposing of the limiting parts 301 further increases the spacing between adjacent conductive layers 302, and then increases the dust collection area of the dust collection assembly 3 and improves the effects of dust removal, disinfection and sterilization.

[0099] In some embodiments, the conductive layer 302 and the flexible insulating layer 300 are detachably stacked, or the conductive layer 302 is connected to the flexible insulating layer 300.

[0100] In the embodiment, in the case that the conductive layer 302 and the flexible insulating layer 300 are detachably stacked, it can facilitate the cleaning and maintenance of the dust collection assembly 3, improve the convenience of dust filtration and cleaning; moreover, detachably arranging the conductive layer 302 and the flexible insulating layer 300 can further make the shape of the dust collection assembly 3 changeable, that is, the conductive layer 302 and flexible insulating layer 300 can be disassembled and wound into different shapes according to the flexibility characteristic, and therefore, the applicability of the dust collection assembly 3 in different structures is improved and the needs of the dust collection assembly 3 on different electric field forms are satisfied. In the case that the conductive layer 302 is connected to the flexible insulating layer 300, it can connect the conductive layer 302 with the flexible insulating layer 300 tightly, and the conductive layer 302 and the flexible insulating layer 300 can move together, and the electrode sheets 30 have a self-adaptive characteristic when the electrode sheets 30 are convolved or bent.

[0101] In some embodiments, in the case that the conductive layer 302 is connected to the flexible insulating layer 300, the conductive layer 302 is coated or adhered to the flexible insulating layer 300.

[0102] In the embodiment, the conductive layer 302 is coated or adhered to the flexible insulating layer 300, the connecting strength between the conductive layer 302 and the flexible insulating layer 300 is enhanced, and the convenience during the winding is ensured.

[0103] As shown in Fig. 15, in some embodiments, the electrode sheet 30 further comprises an insulating substrate 303, and the conductive layer 302 is provided on the insulating substrate 302; in the case that the conductive layer 302 is connected to the flexible insulating layer 300, the insulating substrate 303 is provided on the flexible insulating layer 300.

[0104] In the embodiment, the electrode sheet 30 further comprises the insulating substrate 303, and the conductive layer 302 is provided on the insulating substrate 303, the insulating substrate 303 is further connected to the flexible insulating layer 300, and the conductive layer 302 is connected to the flexible insulating layer 300 through the insulating substrate 303, and this helps the manufacturing of the electrode sheet 30.

[0105] In some embodiments, the side of the insulating substrate 303 where the conductive layer 302 is provided is connected to the flexible insulating layer 300.

[0106] In the embodiment, the side of the insulating substrate 303 where the conductive layer 302 is provided is connected to the flexible insulating layer 300, and the flexible insulating layer 300 and the insulating substrate 303 are respectively located at the two sides of the conductive layer 302, and furthermore, the conductive layer 302 is completely sealed by the insulating substrate 303 and the flexible insulating layer 300, the surface of the electrode sheets 30 are completely insulated, and this can prevent the occurrence of electricity leakage during operation with power connected, and improve safety performance.

[0107] In some embodiments, the conductive layer 302 is coated on or adhered to the insulating substrate 303.

[0108] In the embodiment, the conductive layer 302 is coated on or adhered to the insulating substrate 303, and the conductive layer 302 and the insulating substrate 303 are connected and form an integrated structure, and this improves the connecting strength and the reliability between the conductive layer 302 and the insulating substrate 303, and further ensures the stability of the spacing between the adjacent electrode sheets 30 and the stability of the electric field.

[0109] In some embodiments, the insulating substrate 303 is adhered to the flexible insulating layer 300.

[0110] In the embodiment, the insulating substrate 303 is adhered to the flexible insulating layer 300, and the insulating substrate 303 and the flexible insulating layer 300 are adhered into an integrated structure, this improves the reliability of the connection between the insulating substrate 303 and the flexible insulating layer 300, and avoids the occurrence of the separation of the conductive layer 302 from the flexible insulating layer 300.

[0111] In some embodiments, the insulating substrate 303 comprises any one of PC, PET, PP and PS; and / or the thickness of the insulating substrate 303 is greater than or equal to 0.1mm and less than or equal to 1.0mm.

[0112] In the embodiment, the insulating substrate 303 comprises any one of polycarbonate (PC), polyethylene terephthalate (PET), polypropylene (PP), and polystyrene (PS). The thickness of the insulating substrate 303 is set to be between 0.1mm and 1mm, and this ensures the insulating performance of the electrode sheet 30.

[0113] In a specific application, the thickness of the insulating substrate 303 can be any value of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, and 1.0mm.

[0114] As shown in Fig. 9, in some embodiments, the limiting part 301 comprises a protrusion 3011, and the protrusion 3011 is provided at one side or different sides of the flexible insulating layer 300.

[0115] In the embodiment, the limiting part 301 comprises the protrusion 3011, and the protrusion 3011 is provided at one side or different sides of the flexible insulating layer 300; the disposing of the protrusion 3011 can increase the spacing between adjacent electrode sheets 30 when the multiple electrode sheets 30 are stacked, and this firstly ensures the stability of the electric field generated by the electrode sheets 30, and secondly increases the dust collection space of the dust collection assembly 3, and thus the dust collection effect is improved. The protrusion 3011 can be provided at one side or two sides of the flexible insulating layer 300.

[0116] In some embodiments, the protrusion 3011 is provided at one side of the flexible insulating layer 300, and the conductive layer 302 is provided at the other side of the flexible insulating layer 300.

[0117] In the embodiment, the protrusion 3011 and the conductive layer 302 are respectively located at the two sides of the flexible insulating layer 300, and this further facilitates the connection between the conductive layer 302 and the flexible insulating layer 300, and lowers the processing difficulty.

[0118] As shown in Fig. 11, in some embodiments, the height C of the protrusion 3011 is greater than or equal to 0.1mm, and less than or equal to 10mm.

[0119] In the embodiment, the height C of the protrusion 3011 is set to be between 0.1mm and 10mm, and this ensures the spacing effect between adjacent electrode sheets.

[0120] In some embodiments, in any cross section perpendicular to the height direction of the protrusion 3011, a width A between any two points in the contour line of protrusion 3011 is greater than or equal to 0.1mm and less than or equal to 10mm; and / or, a spacing B between adjacent protrusions 3011 is greater than or equal to 0.5mm and less than or equal to 100mm; and / or, the difference between the heights of any two protrusions 3011 is greater than or equal to 0mm and less than or equal to 1mm.

[0121] In the design, if the width A of the protrusion 3011 is too large, it will increase manufacturing cost and reduce the volume of the dust collection space; if the width A of the protrusion 3011 is too small, it will increase manufacturing difficulty; therefore, setting the width A between any two points in the contour line of any cross section of the protrusion 3011 to be between 0.1mm and 10mm can ensure the volume of the dust collection space and can further facilitate the manufacturing. In some embodiments, the spacing B between the adjacent protrusions 3011 is set to be between 0.5mm and 100mm. The difference between the heights of any two protrusions 3011 is greater than or equal to 0mm and less than or equal to 1mm, and the heights of multiple protrusions 3011 are close to each other, and thus, the spacing between the electrode sheets 30 is maintained within a stable range.

[0122] It is understandable that the height C of the protrusion 3011 is the height of the protrusion 3011 protruding out of the flexible insulating layer 300.

[0123] In a specific application, in any cross section perpendicular to the height direction of the protrusion 3011, the width A between any two points in the contour line of the protrusion 3011 (i.e., the width of the protrusion 3011) is any value of 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm and 9.5mm, or a value between any two of the above values.

[0124] In some embodiments, the distance B between the adjacent protrusions 3011 is greater than or equal to 2mm and less than or equal to 100mm. The spacing between the adjacent protrusions 3011 can be any value of 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm and 90mm, or a value between any two of the above values.

[0125] In some embodiments, the height C of the protrusion 3011 can be any value of 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm and 9mm, or a value between any two of the above values.

[0126] In some embodiments, the multiple protrusions 3011 are set at the same height.

[0127] In some embodiments, the edge of the conductive layer 302 is located within an area enclosed by the edge of the flexible insulating layer 300.

[0128] In the embodiment, the edge of the conductive layer 302 is located within the area enclosed by the edge of the flexible insulating layer 300, and the projection of the conductive layer 302 on the flexible insulating layer 300 is located within the flexible insulating layer 300, and this improves a creepage distance and an electrical clearance, and avoids the occurrence of the phenomenon of discharge and ignition.

[0129] In some embodiments, the distance from the edge of the conductive layer 302 to the edge of the flexible insulating layer 300 along the width direction of the flexible insulating layer 300 is greater than or equal to 1mm and less than or equal to 50mm.

[0130] In the embodiment, the distance from the edge of the conductive layer 302 to the edge of the flexible insulating layer 300 along the width direction of the flexible insulating layer 300 is greater than or equal to 1mm and less than or equal to 50mm, and this ensures the electrical clearance and further ensures the coverage range of the electric field.

[0131] In a specific application, the distance from the edge of the conductive layer 302 to the edge of the flexible insulating layer 300 along the width direction of the flexible insulating layer 300 is any value of 2mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 40mm and 50mm.

[0132] In some embodiments, the flexible insulating layer 300 comprises an insulating film or an insulating plastic sheet.

[0133] In the embodiment, the flexible insulating layer 300 comprises an insulating film or an insulating plastic sheet, and this can achieve the winding and can further ensure the insulation effect between adjacent electrode sheets 30.

[0134] In some embodiments, the thickness of the flexible insulating layer 300 is greater than or equal to 0.1mm and less than or equal to 1mm.

[0135] In the embodiment, the thickness of the flexible insulating layer 300 is between 0.1mm and 1mm, and this can achieve the insulation between adjacent electrode sheets 30.

[0136] In a specific application, the thickness of the flexible insulating layer 300 can be any value of 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, or a value between any two of the above values.

[0137] In some embodiments, the conductive layer 302 comprises any of a metal foil, a conductive thin film, or a flexible conductive sheet coated with a conductive coating.

[0138] In the embodiment, the conductive layer 302 comprises any of a metal foil, a conductive thin film, or a flexible conductive sheet coated with a conductive coating.

[0139] In some embodiments, the surface resistance of the conductive layer 302 is less than or equal to 1 × 10 8< Ω.

[0140] In the embodiment, the surface resistance of the conductive layer 302 is less than or equal to 1 × 10 8< Ω, and this ensures that the loading voltage will not show significant attenuation when the electrode sheet 30 is too long.

[0141] As shown in Fig. 12, in some embodiments, the electrode sheet 30 further comprises an electric connecting part 3020, and the electric connecting part 3020 is electrically connected to the conductive layer 302, and the electric connecting part 3020 is configured to connect the power supply device 5.

[0142] In the embodiment, the electrode sheet 30 further comprises the electric connecting part 3020, and the electric connecting part 3020 is connected to the conductive layer 302 and can be connected to the power supply device 5, and further provides high-voltage power supply to the electrode sheet 30, and the electrode sheet 30 can generate a corresponding electric field and achieve dust adsorption.

[0143] In some embodiments, along the length direction of the flexible insulating layer 300, the electric connecting part 3020 is located at the end part of the conductive layer 302.

[0144] In the embodiment, along the length direction of the flexible insulating layer 300, the electric connecting part 3020 is located at the end part of the conductive layer 302, to facilitate the connection between the electric connecting part 3020 and the power supply device 5.

[0145] It is understandable that the flexible insulating layer 300 is in a strip shape.

[0146] In some embodiments, the electric connecting part 3020 comprises a metal member or a wire.

[0147] In the embodiment, the electric connecting part 3020 comprises a structure such as a metal member or a wire that can achieve conductivity.

[0148] In some embodiments, the number of fan blades 2 is one or multiple, and in the case that the number of fan blades 2 is multiple, the multiple fan blades 2 are arranged at intervals along the axis of rotation.

[0149] In the embodiment, the number of fan blades 2 is one or multiple, and in the case that the number of fan blades 2 is multiple, the multiple fan blades 2 are arranged at intervals along the axis of rotation, and this can provide multiple air supplying methods.

[0150] In some embodiments, in the case that the number of fan blades 2 is multiple, the dust collection assembly 3 is provided between the multiple fan blades 2 and the air inlet 10.

[0151] In some embodiments, the rotating directions of at least two fan blades 2 are the same or different from each other.

[0152] In the embodiment, the rotating directions of at least two fan blades 2 are the same or different from each other; in the case that the rotating directions of at least two fan blades 2 are the same, the air supplying distance can be increased; and in the case that the rotating directions of at least two fan blades 2 are different from each other, a windless air supply can be formed.

[0153] In some embodiments, the dust collection assembly 3, the ion generator 4, and the fan blades 2 are coaxially distributed along the direction of the rotating axis of the fan blades 2, and this improves the purification and dust collection efficiency of the fan.

[0154] In some embodiments, the present application relates to the field of air purification, and particularly, relates to a filter for purification, sterilization and disinfection and a purification fan; it mainly introduces a filter screen made of a self-adaptive flexible electrode (for example, the dust collection assembly 3); the filter screen comprises a positive electrode and a negative electrode; the positive electrode and the negative electrode are made of the self-adaptive flexible electrode and wound in parallel to form a filter screen with a spiral structure, which has the characteristics of low wind resistance, high efficiency, and simple process. The fan with this spiral structure has the effects of dust removal, sterilization and disinfection.

[0155] An electrostatic-purification dust collection device (for example, the dust collection assembly 3) has the effects of dust removal, sterilization and disinfection, and has low wind resistance, and can meet the application scenes with strict requirements for the wind resistance, such as an air conditioner, a fan and a warm air blower; however, since the electrostatic-purification dust collection device mainly relies on the electric field to adsorb and sterilize particles, and the electrodes that generate the electric field need to be spaced arranged, parallel to each other and connected to the high-voltage output end and the low-voltage output end of the high-voltage power supply, this results in that the manufacturing process of existing integrated devices is relatively complex, the manufacturing cost thereof is high, and the form thereof is single, and thus this further limits the application scope of the technology. In related technologies, since an external spacer or a hot melt adhesive is configured to control the distance between a positive electrode sheet and a negative electrode sheet, firstly, the processing accuracy cannot be guaranteed, and secondly, a fine manual operation is required, and this results in a high processing cost.

[0156] A filter screen made of a self-adaptive flexible electrode comprises a flexible electrode sheet and a support frame (for example, the frame 32), and the flexible electrode sheet is divided into a positive electrode (for example, a positive electrode sheet) and a negative electrode (for example, a negative electrode sheet), which are respectively connected to the high-voltage output end and the low-voltage output end of the high-voltage power supply during operation; and both the positive electrode and the negative electrode are flexible electrode sheets with limiting structures (for example, the limiting parts 301). The positive electrode and the negative electrode are wound in parallel on one end of the support frame and buckled to the other end of the support frame, and then the assembly of the filter screen can be accomplished; the surface of the support frame is provided with a grid 328. The core purification component of the fan using the filter screen further comprises an ion generator 4 and a high-voltage power supply (for example, the power supply device 5); during the working process of the fan, the ion generator 4 makes the particles in the air carry charges, and the high-voltage power supply supplies electricity to the positive electrode and the negative electrode of the filter screen, an electric field is formed between the positive electrode and the negative electrode and then the charged particles are adsorbed; at the same time, the electric field further has the effect of sterilization and disinfection.

[0157] The filter screen made of the self-adaptive flexible electrodes comprises the flexible electrode sheet with a limiting structure and the support frame.

[0158] The flexible electrode sheet with a limiting structure comprises a conductive layer 302 and an insulating layer with a limiting structure (for example, the flexible insulating layer 300); the limiting structure consists of several protrusions 3011 provided on the surface of the insulating layer, and the supporting function of the protrusions 3011 can limit the electric field spacing between the positive electrode and the negative electrode to be between 0.1mm and 10mm.

[0159] The flexible electrode sheet with the limiting structure comprises 1 piece of positive electrode with a limiting structure and 1 piece of negative electrode with a limiting structure; the positive electrode and the negative electrode are wound in parallel on the support frame to form a spiral filter screen body.

[0160] The support frame is made of an insulating material, and the flexible electrode sheet is wound along the direction of the central axis of the support frame; the grid 328 is provided on the support frame, and the grid 328 can fix the spirally wound flexible electrode sheet and prevent it from falling or scattering from the front surface and the back surface, and the stability of the filter structure is maintained.

[0161] For the convenience of winding and packaging, the support frame can be set to be a detachable component; the flexible electrode sheet is firstly wound on one side of the support frame (for example, the first frame 320), and then buckled to another component (for example, the second frame 324) to achieve the packaging and fixing of the filter screen; the support frame can ensure the stability of the shape of the filter screen, and a wire that connects the positive electrode and the negative electrode to the input end of the high-voltage power supply can be hidden, to ensure the safety during operation.

[0162] When the filter screen is mounted in the fan, the filter screen needs to be used in cooperation with the ion generator 4 and the high-voltage power supply; in some embodiments, the filter screen is mounted at the air inlet 10 of the fan, and this can effectively alleviate the problem of dust accumulation on the main body of the fan.

[0163] The ion generator 4 can be provided on an air duct path, in some embodiments, at a position of the air outlet 12 or the air inlet 10 of the fan close to the filter screen, and this can prevent generated ions from being blocked by other components in the air duct and affecting the charging effect of particles.

[0164] The main function of the ion generator 4 is to charge the particles, and the ion generator 4 can be a carbon brush positive / negative ion generator 4, a needle tip positive / negative ion generator 4, a needle plate charging device, a tungsten wire charging device, etc.

[0165] The high-voltage power supply can be provided on the filter screen or the entire machine, and mainly supplies electricity to the positive electrode and the negative electrode of the filter screen.

[0166] The self-adaptive flexible electrode sheet can be directly wound into a filter screen with an irregular structure, this can control the distance between the positive electrode and the negative electrode of the dust collection assembly 3, and greatly reduce the processing difficulty and the processing cost of the filter screen, and at the same time, the protrusions 3011 can further increase the dust collection area of the filter screen, and improve the effects of dust removal, sterilization and disinfection of the filter screen.

[0167] In the present application, the term of "multiple" indicates two or more than two, unless otherwise explicitly specified or defined. The terms of "mount", "connect with", "connect to", "fix" and the like should be understood in a broad sense, for example, the term "connect to" may be a fixed connection, and may further be a removable connection or an integral connection; and the term of "connect with" may be a direct connection and may further be an indirect connection through an intermediate medium. A person of ordinary skills in the art could understand the specific meanings of the terms in the present application according to specific situations.

[0168] In the specification of the present application, the descriptions of the phrases "one embodiment", "some embodiments" and "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in combination with the embodiment(s) or example(s) are comprised in at least one embodiment or example of the present application. In the specification, the schematic representation of the above phrases does not necessarily refer to the same embodiment or example. Moreover, the particular features, structures, materials or characteristics as described may be combined in a suitable manner in any one or more of the embodiments or examples.

[0169] The descriptions above are only some embodiments of the present application, and are not configured to limit the present application. For a person skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present application shall all be comprised in the protection scope of the present application.

Claims

1. A fan, comprising: a cover body (1), wherein the cover body (1) is provided with an air inlet (10) and an air outlet (12); a fan blade (2), provided inside the cover body (1) and configured to supply air to the air outlet (12); and a dust collection assembly (3), provided inside the cover body (1), wherein the dust collection assembly (3) is located between the air inlet (10) and the air outlet (12), the dust collection assembly (3) comprises a plurality of electrode sheets (30), the plurality of electrode sheets (30) are stacked and wound, and an electric field can be generated between adjacent electrode sheets (30) to adsorb mediums carrying charges through the electric field.

2. The fan according to claim 1, wherein, the dust collection assembly (3) is located between the fan blade (2) and the air inlet (10).

3. The fan according to claim 1, further comprising: an ion generator (4), provided in the cover body (1) and configured to make the mediums carry charges, wherein the plurality of electrode sheets (30) can form the electric field after being electrified and adsorb the mediums carrying charges through the electric field.

4. The fan according to claim 3, wherein, the ion generator (4) is provided at a side of the dust collection assembly (3), or between the air inlet (10) and the dust collection assembly (3), or between the air outlet (12) and the dust collection assembly (3), wherein the ion generator (4) is provided close to the dust collection assembly (3).

5. The fan according to claim 3, wherein, the ion generator (4) comprises any of a carbon brush positive ion generator, a carbon brush negative ion generator, a needle tip positive ion generator, a needle tip negative ion generator, a needle plate charging device, or a tungsten wire charging device.

6. The fan according to any one of claims 1 to 5, further comprising: a power supply device (5) provided in the dust collection assembly (3) or in the cover body (1), wherein the power supply device (5) is configured to supply electricity to the plurality of electrode sheets.

7. The fan according to claim 6, wherein, the power supply device (5) comprises a positive connecting electrode (50) and a negative connecting electrode (52); and the plurality of electrode sheets (30) comprise a plurality of positive electrode sheets (304) and a plurality of negative electrode sheets (305), and the positive connecting electrode (50) is electrically connected to the plurality of positive electrode sheets (304) and the negative connecting electrode (52) is electrically connected to the plurality of negative electrode sheets (305).

8. The fan according to claim 7, wherein, the plurality of positive electrode sheets (304) and the plurality of negative electrode sheets (305) are alternately stacked in sequence; when the plurality of electrode sheets (30) are electrified, the electric field can be formed between the plurality of positive electrode sheets (304) and the plurality of negative electrode sheets (305).

9. The fan according to any one of claims 1 to 5, wherein, the plurality of electrode sheets (30) are a plurality of flexible electrode sheets.

10. The fan according to claim 9, wherein, the dust collection assembly (3) further comprises: a frame (32), detachably arranged inside the cover body (1), wherein the plurality of electrode sheets (30) are stacked and wound in the frame (32) in sequence.

11. The fan according to claim 10, wherein, the plurality of electrode sheets (30) are stacked in sequence and then convolved around a center of the frame (32) to form a spiral dust collecting structure; or the plurality of electrode sheets (30) are stacked in sequence and stacked along a circumferential direction of the frame (32) in a reciprocating manner.

12. The fan according to claim 11, wherein, in the case that the plurality of electrode sheets (30) are stacked in sequence and then convolved around the center of the frame (32) to form the spiral dust collecting structure, the electric field is distributed radially taking a winding center of the plurality of electrode sheets (30) as a circle center, and directions of the electric fields generated between adjacent stacked electrode sheets (30) are different.

13. The fan according to claim 11, wherein, the frame (32) further comprises: a first frame (320), wherein the first frame (320) comprises a first support ring (322), and the plurality of electrode sheets (30) wound around an outer sidewall of the first support ring (322); and a second frame (324), detachably connected to the first frame (320), wherein the second frame (324) comprises a second support ring (326), and in the case that the first frame (320) is buckled to the second frame (324), the second support ring (326) penetrates and is provided in the first support ring (322).

14. The fan according to claim 11, wherein, the frame (32) comprises an insulating frame (32); and / or a side of the frame (32) is provided with a grid (328), and the grid (328) is located at a side surface of the electrode sheets (30).

15. The fan according to any one of claims 1 to 5, wherein, any of the plurality of electrode sheets (30) comprises a flexible insulating layer (300) and a conductive layer (302), wherein the flexible insulating layer (300) is provided with a plurality of limiting parts (301), wherein the plurality of limiting parts (301) are spaced-apart, and the conductive layer (302) is provided at a side of the flexible insulating layer (300), the plurality of limiting parts (301) are located between adjacent stacked conductive layers (302) to create a gap between adjacent conductive layers (302), and the electric field is generated in the gap in the case that electricity is supplied.

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