Electrical device

Abstract

The utility model discloses electrical equipment, and belongs to the technical field of electrical equipment. The electrical equipment comprises an air duct shell which defines an air duct; the filter screen is mounted on the air duct shell; the fan is used for driving air in the air duct to form airflow; a cleaning part of the cleaning structure is in contact with the side, facing the outer side of the air duct, of the filter screen, and the cleaning structure is configured to be driven by the air flow to rotate. The air flow generated by the fan drives the cleaning structure to rotate, the automatic cleaning function of the filter screen is achieved, manual disassembly and cleaning are not needed, the maintenance cost is reduced, meanwhile, the requirements of high-power electrical equipment for the high ventilation rate and the high protection grade are met, an additional power source is not needed, the structure is simple, cost control is facilitated, and the maintenance cost is reduced. The actual production is convenient.

Description

Technical Field

[0001] The present application belongs to the technical field of electrical equipment, and in particular, relates to an electrical equipment. Background Art

[0002] With the development of technology, the size of electrical equipment is getting smaller and smaller, and the power is getting bigger and bigger. The heat dissipation performance is becoming more and more important. For air-cooled machines, high ventilation rates and highly protective air inlets and outlets directly affect the heat dissipation performance of the machine. Previous filtering measures such as dust-proof cotton and dust-proof cloth bags are no longer applicable due to the low ventilation rate. High-density filters have high ventilation rates and high filtering effects. For example, a 200-mesh screen with an aperture of 0.07mm and a ventilation rate of 48% can be used as air outlet protection. However, the gap size of high-density filters is very small and will be blocked by foreign objects such as catkins and sand. The ventilation rate will become lower and lower with long-term use. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an electrical device that realizes the automatic cleaning function of the filter screen, does not require manual disassembly and cleaning, reduces maintenance costs, meets the requirements of high ventilation rate and high protection level for high-power electrical equipment, does not require an additional power source, has a simple structure, is conducive to cost control, and is convenient for actual production.

[0004] In a first aspect, the present application provides an electrical device, comprising:

[0005] an air duct shell, wherein the air duct shell defines an air duct;

[0006] A filter screen, the filter screen being installed on the air duct shell;

[0007] A fan, the fan is used to drive the air in the air duct to form an airflow;

[0008] A cleaning structure, wherein a cleaning portion of the cleaning structure contacts a side of the filter screen that faces the outside of the air duct, and the cleaning structure is configured to be driven to rotate by the airflow.

[0009] According to the electrical equipment of the present application, the airflow generated by the above-mentioned fan drives the cleaning structure to rotate, thereby realizing the automatic cleaning function of the filter screen without the need for manual disassembly and cleaning, thereby reducing maintenance costs. At the same time, it meets the requirements of high ventilation rate and high protection level of high-power electrical equipment, and does not require an additional power source. The structure is simple, which is conducive to cost control and convenient for actual production.

[0010] According to one embodiment of the present application, the cleaning structure includes:

[0011] A base, the base is rotatably mounted on the filter screen, and the cleaning part is connected to the base;

[0012] A plurality of fan blades are separately disposed on the base and configured to be driven to rotate by the airflow.

[0013] According to one embodiment of the present application, the cleaning part is provided in plurality, the plurality of cleaning parts are distributed at intervals on the side wall of the base, the plurality of fan blades are distributed at intervals on the side wall of the base, and the cleaning part and the fan blades are distributed at intervals along the direction of the rotation axis of the base.

[0014] According to one embodiment of the present application, the electrical device further includes:

[0015] A support shaft, one end of which is mounted on the filter screen, and the base is pivotally mounted on the other end of the support shaft.

[0016] According to an embodiment of the present application, the filter screen has a mounting beam, the mounting beam is connected between the side beams of the filter screen, and the support shaft is connected to the mounting beam.

[0017] According to an embodiment of the present application, the mounting beam is located on a side of the filter screen facing the inner side of the air duct.

[0018] According to one embodiment of the present application, the electrical device further includes:

[0019] The fastener is a support shaft that passes through the mesh of the filter screen and the mounting beam. The fastener is sleeved on an end of the support shaft that is away from the base and stops at the mounting beam.

[0020] According to one embodiment of the present application, the cleaning structure is configured not to be driven to rotate by the airflow when the fan rotates forward, and to be driven to rotate by the airflow when the fan rotates reversely.

[0021] According to an embodiment of the present application, the cleaning structure is installed on the side of the filter screen facing the outside of the air duct through a one-way bearing.

[0022] According to one embodiment of the present application, the air duct shell has a first air outlet and a second air outlet. When the fan rotates forward, air flows into the air duct from the first air outlet, and air flows out of the air duct from the second air outlet. The filter is arranged in the air duct and is directly opposite to the first air outlet. The cleaning structure is located between the filter and the first air outlet. The fan is arranged in the air duct and is directly opposite to the second air outlet.

[0023] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of the structure of an electrical device provided in an embodiment of the present application;

[0026] Figure 2 It is one of the assembly schematic diagrams of the filter screen and the cleaning structure provided in the embodiment of the present application;

[0027] Figure 3 This is the second assembly diagram of the filter screen and cleaning structure provided in the embodiment of the present application.

[0028] Reference numerals:

[0029] Air duct housing 100, air duct 110, first air outlet 120, second air outlet 130;

[0030] Filter 200, mounting beam 210;

[0031] Fan 300;

[0032] Cleaning structure 400, cleaning part 410, base 420, fan blade 430;

[0033] Support shaft 500 , fastener 700 , bearing 800 . DETAILED DESCRIPTION

[0034] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0035] The present application discloses an electrical device.

[0036] Reference below Figure 1-Figure 3 An electrical device according to an embodiment of the present application is described.

[0037] In some embodiments, Figure 1 As shown, the electrical device includes: an air duct housing 100 , a filter 200 , a fan 300 and a cleaning structure 400 .

[0038] The air duct shell 100 defines the air duct 110; the filter 200 is installed on the air duct shell 100; the fan 300 is used to drive the air in the air duct 110 to form an airflow; the cleaning part 410 of the cleaning structure 400 is in contact with the side of the filter 200 facing the outside of the air duct 110, and the cleaning structure 400 is configured to be driven to rotate by the airflow.

[0039] The filter 200 can be used to filter impurities in the air entering the air duct 110 to protect the interior of the electrical device from pollution.

[0040] It is understandable that since the filtering performance of low-density filters is too low to meet the protection level requirements of electrical equipment, high-density wire mesh is usually used in practical applications. However, the mesh aperture of the high-density wire mesh is too small, and impurities with slightly larger sizes can block the mesh of the high-density wire mesh, seriously affecting the ventilation rate of the high-density wire mesh.

[0041] Among them, the mesh number of the high-density filter 200 must be greater than or equal to 200 meshes.

[0042] For example, in some embodiments, the mesh size of the filter screen 200 is 250 meshes.

[0043] The cleaning part 410 of the cleaning structure 400 may include a hair-planting board and bristles laid on the hair-planting board. Specifically, the hair-planting board may be made of nylon board, plastic board, bamboo board, wooden board, aluminum board, steel board or stainless steel board, etc., and there is no limitation here.

[0044] For example, in some embodiments, the hair implantation plate is made of stainless steel plate.

[0045] The bristles can be made of horse hair, pig bristle, sisal, palm fiber, nylon fiber, abrasive fiber, copper wire or steel wire, etc., without limitation.

[0046] For example, in some embodiments, the bristles are made of copper wire.

[0047] In actual implementation, Figure 1 As shown, when the electrical equipment is working, the operation of the fan 300 accelerates the flow of air in the air duct 110, driving the cleaning structure 400 to rotate, and the cleaning portion 410 of the cleaning structure 400 cleans the blockage on the filter 200. When the fan 300 is reversed, it drives the cleaning structure 400 to rotate. During the rotation, the cleaning portion 410 of the cleaning structure 400 continuously rubs the filter 200 toward the side outside the air duct 110, thereby cleaning the blockage on the filter 200. At the same time, the reverse airflow can blow the cleared foreign matter to the outside of the air duct shell 100.

[0048] The electrical equipment provided in the embodiment of the present application drives the cleaning structure 400 to rotate through the airflow generated by the above-mentioned fan 300, thereby realizing the automatic cleaning function of the filter 200, without the need for manual disassembly and cleaning, thereby reducing maintenance costs, while meeting the requirements of high ventilation rates and high protection levels for high-power electrical equipment, and without the need for additional power sources, the structure is simple, which is conducive to cost control and convenient for actual production.

[0049] In some embodiments, Figure 2-Figure 3 As shown, the cleaning structure 400 may include: a base 420 and a plurality of fan blades 430 .

[0050] The base 420 can be rotatably mounted on the filter 200, and the cleaning portion 410 can be connected to the base 420; a plurality of blades 430 can be separately disposed on the base 420, and the plurality of blades 430 can be configured to be driven to rotate by airflow.

[0051] Here, "a plurality" means two or more than two. For example, in some embodiments, Figure 2 As shown, three blades 430 may be separately disposed on the base 420 .

[0052] The shape of the base 420 may include but is not limited to a cylinder, a cube, or a prism, etc., which is not limited here.

[0053] For example, in some embodiments, Figure 2 As shown, the base 420 is in the shape of a cylinder.

[0054] The connection method between the fan blade 430 and the base 420 may include but is not limited to one-piece molding, bolt connection or riveting, etc., which is not limited here.

[0055] For example, in some embodiments, the fan blades 430 and the base 420 are connected in an integrally formed manner.

[0056] The connection method between the cleaning part 410 and the base 420 may include but is not limited to snap-in, plug-in or bolt connection, etc., which is not limited here.

[0057] For example, in some embodiments, the cleaning unit 410 and the base 420 are connected by bolts.

[0058] The shape structure of the fan blade 430 may include but is not limited to a curved shape, a straight shape or a concave-convex shape. In actual design, the shape of the fan blade 430 can be optimized to reduce airflow separation and eddy currents, thereby improving airflow efficiency. At the same time, attention should also be paid to the installation angle and inclination angle of the fan blade 430 during installation. The appropriate angle can guide the airflow to flow efficiently in the desired direction. Considering that the introduction of the fan blade 430 will inevitably increase the noise, the edge shape and surface texture of the fan blade 430 can be optimized to reduce the eddy currents and turbulence caused by the airflow, thereby reducing the noise level. In order to maximize the driving effect of the fan blade 430, airflow optimization technology can be used, such as using a serrated design on the leading edge of the blade to reduce noise and improve airflow efficiency, or adjusting the twisting angles of different parts of the fan blade 430 to further optimize the airflow.

[0059] The electrical equipment provided in the embodiment of the present application, through the arrangement of the above-mentioned base 420 and multiple fan blades 430, the airflow acts on the fan blades 430, so that the base 420 and the cleaning part 410 rotate together, thereby realizing the automatic cleaning function of the filter 200. At the same time, the structure of the fan blades 430 itself can be optimized accordingly according to actual needs to guide the airflow to flow efficiently in the desired direction, thereby improving the cleaning efficiency.

[0060] In some embodiments, Figure 2 As shown, the cleaning unit 410 may be provided in plurality, the plurality of cleaning units 410 may be distributed and spaced apart on the side wall of the base 420 , and the plurality of fan blades 430 may be distributed and spaced apart on the side wall of the base 420 .

[0061] In some embodiments, Figure 2 As shown, the cleaning portion 410 and the fan blades 430 may be spaced apart and distributed along the direction of the rotation axis of the base 420 , and a plurality of cleaning portions 410 and a plurality of fan blades 430 may correspond one to one along the direction of the rotation axis of the base 420 .

[0062] Here, “plurality” means two or more than two. For example, in some embodiments, the number of cleaning units 410 can be three.

[0063] like Figure 2 As shown, the shape of the base 420 can be designed to be a cylinder, that is, the axial direction of the base 420 is parallel to the rotation axis of the cleaning portion 410 and the fan blades 430, and a plurality of cleaning portions 410 can be distributed at intervals along the circumference of the base 420, and the distance between two adjacent cleaning portions 410 can be equal; a plurality of fan blades 430 can be distributed at intervals along the circumference of the base 420, and the distance between two adjacent fan blades 430 can be equal. In order to further optimize the flow pattern of the airflow, a plurality of cleaning portions 410 and a plurality of fan blades 430 can correspond one to one along the direction of the rotation axis of the base 420.

[0064] The electrical equipment provided in the embodiment of the present application, through the arrangement of the above-mentioned multiple cleaning parts 410, under the driving action of multiple fan blades 430, the multiple cleaning parts 410 are sufficiently activated by the driving force of the airflow and rotate smoothly, which can improve the cleaning efficiency, and at the same time make the layout of the cleaning parts 410 and the fan blades 430 more reasonable, thereby optimizing the cleaning effect.

[0065] In some embodiments, Figure 1-Figure 3 As shown, the electrical device may further include: a supporting shaft 500 .

[0066] One end of the support shaft 500 may be mounted on the filter 200 , and the base 420 may be pivotally mounted on the other end of the support shaft 500 .

[0067] like Figure 1-Figure 3As shown, the base 420 can be rotatably installed on the support shaft 500. In order to improve the stability of rotation, a bearing 800 can be arranged between the base 420 and the support shaft 500. The shape of the base 420 can be designed as a cylinder. The axis of the base 420 and the axis of the support shaft 500 can be colinear and parallel to the rotation axis of the fan blades 430 and the cleaning part 410. The rotation axis of the fan blades 430 and the cleaning part 410 can be arranged perpendicular to the mesh surface of the filter 200.

[0068] The electrical equipment provided in the embodiment of the present application realizes the pivotable assembly of the cleaning structure 400 relative to the filter 200 through the setting of the above-mentioned support shaft 500. At the same time, the support shaft 500 provides support for the installation of the cleaning structure 400, so that the cleaning structure 400 can rotate stably to optimize the working performance of the cleaning structure 400.

[0069] In some embodiments, Figure 2-Figure 3 As shown, the filter screen 200 may be provided with a mounting beam 210 , the mounting beam 210 may be connected between the side beams of the filter screen 200 , and the support shaft 500 may be connected to the mounting beam 210 .

[0070] like Figure 2-Figure 3 As shown, the filter 200 can be designed to be square. In other words, the filter 200 can have four side beams connected end to end, namely, an upper side beam, a left side beam, a lower side beam and a right side beam. The mounting beam 210 can be connected between the left beam and the right beam. The mounting beam 210 as a whole can be arranged horizontally. The end of the support shaft 500 away from the base 420 can be connected to the mounting beam 210. The mounting beam 210 and the side beams of the filter 200 can be integrally formed, and can also be assembled by bolt connection or other connection methods.

[0071] Alternatively, the mounting beam 210 may also be connected between the upper side beam and the lower side beam.

[0072] Alternatively, the mounting beam 210 may also be connected between the upper side beam and the right side beam.

[0073] Alternatively, a plurality of mounting beams 210 may be provided, and the plurality of mounting beams 210 are cross-fixed to form a mutually supporting relationship.

[0074] The electrical equipment provided in the embodiment of the present application provides a stable installation position for the support shaft 500 through the setting of the above-mentioned mounting beam 210, increases the rotation stability of the base 420, the fan blades 430 and the cleaning part 410, and maintains the stable working performance of the cleaning structure 400.

[0075] In some embodiments, Figure 2-Figure 3 As shown, the mounting beam 210 may be located on a side of the filter screen 200 facing the inner side of the air duct 110 .

[0076] It is understandable that if the mounting beam is located on the outside of the filter, that is, the mounting beam is located on the side of the filter away from the inner side of the air duct, the mounting beam will block part of the mesh of the filter. Considering that the mounting beam needs to have sufficient structural strength to bear the stress brought by the supporting shaft and the cleaning structure, the width of the mounting beam is usually designed to be larger, resulting in excessive blocking area of ​​the filter by the mounting beam, causing excessively large cleaning blind spots.

[0077] When the mounting beam 210 is located on the side of the filter 200 facing the inner side of the air duct 110, the mounting beam 210 will not form an obstruction between the cleaning structure 400 and the mesh of the filter 200, thereby reducing the cleaning blind area and optimizing the cleaning effect, and the support shaft 500 only needs to pass through the mesh hole to be connected to the mounting beam 210, thereby achieving an overall miniaturized and lightweight design.

[0078] In some embodiments, Figure 2-Figure 3 As shown, the electrical device may further include: a fastener 700 .

[0079] The support shaft 500 may pass through the mesh of the filter screen 200 and the mounting beam 210 , the fastener 700 may be sleeved on one end of the support shaft 500 away from the base 420 , and the fastener 700 may stop at the mounting beam 210 .

[0080] The fastener 700 may include, but is not limited to, nuts, screws, or rivets, etc., which are not limited here.

[0081] For example, in some embodiments, Figure 2-Figure 3 As shown, the fastener 700 is a nut.

[0082] In this embodiment, if Figure 2-Figure 3 As shown, the outer diameter of the portion of the support shaft 500 that passes through the mounting beam 210 may be smaller than the outer diameter of other portions to form a step, thereby preventing the support shaft 500 from moving toward the direction close to the inner side of the air duct 110. The peripheral wall of the support shaft 500 may have a threaded structure, and the fastener 700 may be tightened in cooperation with the threaded structure, thereby pressing against the wall surface of the mounting beam 210 toward the inner side of the air duct 110 to prevent the support shaft 500 from moving in the direction away from the inner side of the air duct 110.

[0083] The electrical equipment provided in the embodiment of the present application realizes a firm assembly between the support shaft 500 and the mounting beam 210 through the setting of the above-mentioned fastener 700. The support shaft 500 is fixed on the mounting beam 210 and cannot move axially and is not easy to loosen, thereby improving the stability and reliability of the operation of the cleaning structure 400.

[0084] In some embodiments, Figure 1As shown, the cleaning structure 400 can be configured to not be driven to rotate by the airflow when the fan 300 rotates forward, and to be driven to rotate by the airflow when the fan 300 rotates reversely.

[0085] like Figure 1 As shown, when the fan 300 rotates forward, air flows into the air duct 110 from the first air port 120, and the air filtered by the filter 200 flows out from the second air port 130. At this time, the cleaning structure 400 is not driven to rotate by the airflow. When the fan 300 rotates reversely, the direction of the airflow changes, and the air flows into the air duct 110 from the second air port 130 and flows out from the first air port 120. The cleaning structure 400 is driven to rotate, and the cleaning part 410 and the fan blades 430 work together to effectively remove dust and impurities on the filter 200.

[0086] The electrical equipment provided in the embodiment of the present application can start the cleaning structure 400 by reversing the fan 300 when cleaning is needed, through the above-mentioned control of the forward and reverse rotation of the fan 300, and keep the cleaning structure 400 stationary during normal operation. The start and stop of the cleaning structure 400 can be conveniently controlled to avoid interference with the electrical equipment, thereby achieving regular cleaning of the filter 200 and preventing the forward rotation of the fan 300 from driving the cleaning structure 400 to rotate and blow dust into the air duct shell 100.

[0087] In some embodiments, Figure 2-Figure 3 As shown, the cleaning structure 400 can be installed on the side of the filter 200 facing the outside of the air duct 110 through a one-way bearing 800.

[0088] In order to realize automatic rotation of the cleaning structure 400 when the fan 300 reverses, the bearing 800 installed between the base 420 and the support shaft 500 can be a one-way bearing 800. The cleaning structure 400 is installed on the side of the filter 200 toward the outside of the air duct 110 through the one-way bearing 800. The one-way bearing 800 allows the base 420 to rotate when the fan 300 reverses, and remain stationary when it rotates forward.

[0089] The electrical equipment provided in the embodiment of the present application, through the arrangement of the above-mentioned one-way bearing 800, realizes that the cleaning structure 400 is stationary when the fan 300 rotates forward, and the cleaning device is started when the fan 300 rotates reversely, thereby preventing the forward rotation of the fan 300 from driving the cleaning structure 400 to rotate and blowing dust into the air duct shell 100, thereby forming more efficient and more accurate protection for the electrical equipment. At the same time, there is no need to make significant improvements to the existing structure, thereby reducing production and processing costs, which is conducive to promotion and use.

[0090] In some embodiments, Figure 1As shown, the air duct housing 100 may have a first air outlet 120 and a second air outlet 130. When the fan 300 rotates forward, air may flow into the air duct 110 from the first air outlet 120, and air may flow out of the air duct 110 from the second air outlet 130. The filter 200 may be arranged in the air duct 110, and the filter 200 and the first air outlet 120 may be arranged opposite each other. The cleaning structure 400 may be located between the filter 200 and the first air outlet 120. The fan 300 may be arranged in the air duct 110, and the fan 300 may be arranged opposite each other to the second air outlet 130.

[0091] In this embodiment, if Figure 1 As shown, the first air outlet 120 and the second air outlet 130 of the air duct shell 100 are used for the inflow and outflow of air respectively. When the fan 300 rotates forward, the air flows into the air duct 110 from the first air outlet 120, and flows out from the second air outlet 130 after being filtered by the filter 200. The cleaning structure 400 is located between the filter 200 and the first air outlet 120, and can effectively clean the dust and impurities on the outer surface of the filter 200. The fan 300 is arranged in the air duct 110, and is directly opposite to the second air outlet 130, so that the air can be sucked in or discharged from the second air outlet 130 more quickly.

[0092] In other embodiments, the filter 200 can be arranged outside the air duct 110, that is, the filter 200 is installed on the outer surface of the air duct shell 100, and the filter 200 and the first air outlet 120 can be arranged directly opposite each other, the cleaning structure 400 can be located on the side of the filter 200 away from the first air outlet 120, and the fan 300 can be arranged in the air duct 110.

[0093] The electrical equipment provided in the embodiment of the present application is designed with the overall structural layout of the above-mentioned filter 200, cleaning structure 400 and fan 300. Air enters the air duct 110 from the first air outlet 120, is filtered by the filter 200, and flows out from the second air outlet 130. The cleaning structure 400 is located between the filter 200 and the first air outlet 120, and can effectively clean the dust and impurities on the filter 200.

[0094] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0095] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0096] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0097] In the description of the present application, “plurality” means two or more.

[0098] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0099] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0100] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0101] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An electrical device, characterized in that: include: an air duct shell, wherein the air duct shell defines an air duct; A filter screen, the filter screen being installed on the air duct shell; A fan, the fan is used to drive the air in the air duct to form an airflow; A cleaning structure, wherein a cleaning portion of the cleaning structure contacts a side of the filter screen that faces the outside of the air duct, and the cleaning structure is configured to be driven to rotate by the airflow.

2. The electrical device according to claim 1, characterized in that The cleaning structure comprises: A base, the base is rotatably mounted on the filter screen, and the cleaning part is connected to the base; A plurality of fan blades are separately disposed on the base and configured to be driven to rotate by the airflow.

3. The electrical device according to claim 2, characterized in that: The cleaning parts are provided in plurality, the plurality of cleaning parts are distributed at intervals on the side wall of the base, the plurality of fan blades are distributed at intervals on the side wall of the base, and the cleaning parts and the fan blades are distributed at intervals along the direction of the rotation axis of the base.

4. The electrical device according to claim 2, characterized in that: Also includes: A support shaft, one end of which is mounted on the filter screen, and the base is pivotally mounted on the other end of the support shaft.

5. The electrical device according to claim 4, characterized in that: The filter screen has a mounting beam, the mounting beam is connected between the side beams of the filter screen, and the support shaft is connected to the mounting beam.

6. The electrical device according to claim 5, characterized in that The mounting beam is located on a side of the filter screen facing the inner side of the air duct.

7. The electrical device according to claim 5, characterized in that: Also includes: The fastener is a support shaft that passes through the mesh of the filter screen and the mounting beam. The fastener is sleeved on an end of the support shaft that is away from the base and stops at the mounting beam.

8. The electrical device according to claim 1, characterized in that The cleaning structure is configured not to be driven to rotate by the airflow when the fan rotates forward, and to be driven to rotate by the airflow when the fan rotates reversely.

9. The electrical device according to claim 8, characterized in that The cleaning structure is installed on the side of the filter screen facing the outside of the air duct through a one-way bearing.

10. The electrical device according to any one of claims 1 to 9, characterized in that: The air duct shell has a first air outlet and a second air outlet. When the fan rotates forward, air flows into the air duct from the first air outlet, and air flows out of the air duct from the second air outlet. The filter is arranged in the air duct and is directly opposite to the first air outlet. The cleaning structure is located between the filter and the first air outlet. The fan is arranged in the air duct and is directly opposite to the second air outlet.

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