Dust removal device

Abstract

The embodiment of the utility model relates to the technical field of cleaning appliances, and particularly discloses a dust removal device which comprises a shell part, a filtering unit, a cleaning head part, an ultrasonic generation device and a wind power piece, a cavity is formed in the shell part, and an inlet is formed in the end, penetrating through the shell part, of the cavity; the filtering unit is arranged in the cavity and is used for filtering garbage in the air flow; the cleaning head is partially contained in the cavity and comprises a fixing element and bristles fixed to the fixing element, and at least part of the bristles extend out of the inlet; the ultrasonic generating device is contained in the cavity, the fixing element is connected with the ultrasonic generating device, and the ultrasonic generating device is used for driving the cleaning head to vibrate; the wind power piece is contained in the cavity and used for driving airflow to flow so that garbage on the outer side of the inlet can be sucked into the cavity. The ultrasonic generating device drives the cleaning head to vibrate, so that garbage attached to a to-be-cleaned surface is swept off, and powerful cleaning is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning tools, and in particular to a dust removal device. Background Art

[0002] With the development of society and the continuous improvement of people's living standards, vacuum cleaners as a household cleaning appliance have been used in more and more families. Vacuum cleaners generally use a motor to drive the impeller to rotate at high speed, generating negative air pressure in a sealed shell, so that dirt such as dust and garbage are sucked into it. Then the dirt is separated from the air inside, and the dirt is left in a designated position, while the clean air is discharged out of the vacuum cleaner.

[0003] However, the inventors of the present application found in the process of implementing the present application that some dirt would adhere to the surface to be cleaned and would not be easily sucked away, resulting in low cleaning intensity. Utility Model Content

[0004] The purpose of the present application is to provide a dust removal device equipped with a cleaning head and an ultrasonic generator, which drives the cleaning head to vibrate by the ultrasonic generator, thereby sweeping away the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a dust removal device, including a shell, a filter unit, a cleaning head, an ultrasonic generating device and a wind force member, the shell is provided with a cavity inside, the cavity passes through one end of the shell to form an inlet; the filter unit is arranged in the cavity, and the filter unit is used to filter garbage in the airflow; the cleaning head is partially accommodated in the cavity, and the cleaning head includes a fixing element and bristles fixed on the fixing element, and the bristles at least partially extend out of the inlet; the ultrasonic generating device is accommodated in the cavity, the fixing element is connected to the ultrasonic generating device, and the ultrasonic generating device is used to drive the cleaning head to vibrate; the wind force member is accommodated in the cavity, and the wind force member is used to drive the airflow to flow so that the garbage outside the inlet is sucked into the cavity.

[0006] Optionally, the dust removal device further includes a mounting unit, wherein the mounting unit is fixed to the shell, and the ultrasonic generating device and the wind force element are respectively mounted on the mounting unit.

[0007] Optionally, the ultrasonic generating device is located upstream of the wind force element, the filter unit is in the shape of an annular column, the ultrasonic generating device passes through the filter unit, and / or the fixed element passes through the filter unit, and the ultrasonic generating device and the filter unit separate the cavity into a receiving chamber and a dust collecting bin, the wind force element is received in the receiving chamber, and the cleaning head portion is received in the dust collecting bin.

[0008] Optionally, the fixing element is provided with a mounting hole, and the output shaft of the ultrasonic generating device is plugged into the mounting hole, so that the ultrasonic generating device drives the cleaning head to vibrate.

[0009] Optionally, the mounting hole and the output shaft of the ultrasonic generating device are matched in shape and are both in a "D" shape.

[0010] Optionally, the cavity is provided with a front end air duct near the entrance, and the dust removal device also includes an anti-backflow element, which at least partially blocks the front end air duct, and the anti-backflow element adjusts the degree of blocking of the front end air duct by deformation or rotation under the action of wind pressure.

[0011] Optionally, the anti-backflow element is set at an acute angle to the gas flow direction of the front-end airway, and the anti-backflow element has a fixed end and a movable end relative to each other, the fixed end is fixed to the shell, and the movable end will be displaced to change the blocking degree of the front-end airway, and in the gas flow direction of the front-end airway, the fixed end is located upstream of the movable end.

[0012] Optionally, the outer contour of one side of the shell portion close to the inlet is contracted, and the cross-sectional area of ​​the inlet is smaller than the cross-sectional area of ​​the cavity.

[0013] Optionally, an end surface of the shell portion on a side where the inlet is opened is arranged at an acute angle to an air intake direction at the inlet.

[0014] Optionally, the dust removal device further includes a shock absorbing device, which is disposed on the wind force member and is used to reduce vibration of the wind force member.

[0015] The beneficial effect of the embodiment of the present application is: different from the prior art, the dust removal device of the embodiment of the present application is provided with a cleaning head and an ultrasonic generating device, and the ultrasonic generating device drives the cleaning head to vibrate, thereby sweeping off the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 This is an overall schematic diagram of a dust removal device according to a specific embodiment of the present application;

[0018] Figure 2 for Figure 1 A schematic cross-sectional view of the dust removal device along AA;

[0019] Figure 3This is an exploded schematic diagram of a dust removal device according to a specific embodiment of the present application;

[0020] Figure 4 This is an overall schematic diagram of a cleaning head according to a specific embodiment of the present application;

[0021] Figure 5 This is an overall schematic diagram of a shell portion of a specific embodiment of the present application;

[0022] Figure 6 for Figure 4 Schematic diagram of the cross section of the middle shell along BB;

[0023] Figure 7 This is an overall schematic diagram of an anti-backflow element of a specific embodiment of the present application;

[0024] Figure 8 for Figure 2 Enlarged view of point C in the figure.

[0025] Description of the drawings: 1. Dust removal device; 100. Shell; 110. Cavity; 111. Entrance; 112. Receiving chamber; 112a. Mounting slot; 113. Dust collecting bin; 114. Front air duct; 120. First shell unit; 131. Cylinder; 131a. Air outlet; 130. Second shell unit; 132. Bottom plate; 200. Filter unit; 300. Cleaning head; 310. Fixing element; 311. Mounting hole; 320. Bristles; 400. Ultrasonic generator; 500. Wind force element; 600. Mounting unit; 800. Backflow prevention element; 801. Fixed end; 810. Stroke expansion part; 802. Moving end; 700. Shock absorber; 710. Bump; 11. Power supply; 900. Fixed unit; 910. Fixing part; 920. Connecting part. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0028] A dust removal device 1, see Figures 1 to 4 , Figure 2 The arrow direction in the figure is the gas flow direction. The dust removal device 1 includes a shell 100, a filter unit 200, a cleaning head 300, an ultrasonic generator 400 and a wind force member 500. A cavity 110 is provided inside the shell 100. The cavity 110 passes through one end of the shell 100 and forms an inlet 111. The filter unit 200 is provided in the cavity 110, and the filter unit 200 is used to filter garbage in the airflow. The cleaning head 300 is partially accommodated in the cavity 110, and the cleaning head 300 includes a fixing element 310 and bristles 320 fixed on the fixing element 310, and the bristles 320 at least partially extend out of the inlet 111. The ultrasonic generator 400 is accommodated in the cavity 110, and the fixing element 310 is connected to the ultrasonic generator 400, and the ultrasonic generator 400 is used to drive the cleaning head 300 to vibrate. The wind force member 500 is accommodated in the cavity 110, and the wind force member 500 is used to drive the airflow to flow so that the garbage outside the inlet 111 is sucked into the cavity 110. The present application is provided with a cleaning head 300 and an ultrasonic generator 400, and the ultrasonic generator 400 drives the cleaning head 300 to vibrate, thereby sweeping away the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning.

[0029] For the shell 100, see Figure 5 and Figure 6The shell 100 is cylindrical as a whole, the cavity 110 is also cylindrical, the filter unit 200 is annular, the ultrasonic generating device 400 passes through the filter unit 200, and / or the fixing element 310 passes through the filter unit 200, the ultrasonic generating device 400 and the filter unit 200 separate the cavity 110 into a receiving chamber 112 and a dust collecting bin 113, the wind force member 500 is received in the receiving chamber 112, and the cleaning head 300 is partially received in the dust collecting bin 113. Specifically, the shell 100 includes a first shell unit 120 and a second shell unit 130, the first shell unit 120 and the second shell unit 130 are distributed along the axial direction, the dust collection bin 113 is located in the first shell unit 120, the inlet 111 is located on the side of the first shell unit 120 away from the second shell unit 130, the receiving chamber 112 is located in the second shell unit 130, and the first shell unit 120 and the second shell unit 130 are detachably connected by plugging, so that the dust collection bin 113 can be opened and closed, so that the user can clean the garbage in the dust collection bin 113. It should be noted that the present application does not limit the specific connection method between the first shell unit 120 and the second shell unit 130. In other embodiments of the present application, the first shell unit 120 and the second shell unit 130 can be detachably connected by designing threads, or by other methods such as magnetic attraction or buckles to achieve detachable connection between the first shell unit 120 and the second shell unit 130. It should also be understood that in the present application, the shell 100 is configured to be cylindrical in order to facilitate user holding, but the present application does not limit the specific shape of the shell 100. In other embodiments of the present application, the shell 100 may also be other shapes such as a prism, a frustum or a truncated cone.

[0030] For the above-mentioned filter unit 200, please refer to Figures 1 to 3, the filter unit 200 is a filter cotton cloth, the side wall of the dust collecting bin 113 is provided with a mounting groove 112a, the notch of the mounting groove 112a is arranged in the direction away from the inlet 111, the filter unit 200 is installed and embedded in the mounting groove 112a, and the ultrasonic generator 400 of the filter unit 200 is arranged in close contact, reducing the gap between the filter unit 200 and other components, and preventing the air from directly reaching the downstream of the filter unit 200 without being filtered. It should be noted that the present application does not limit the specific type and quantity of the filter unit 200. In other embodiments of the present application, the filter unit 200 can be made of other materials such as high-efficiency air filter paper, sponge or filter bag to achieve the filtering effect. In other embodiments of the present application, multiple filter units 200 can also be designed to enhance the filtering effect, for example, two filter units 200 are arranged at intervals along the flow direction of the gas. It should also be noted that the present application does not limit the installation method and installation position of the filter unit 200 on the shell. In the embodiment provided in the present application, in order to prevent the garbage in the dust collecting bin 113 from being accidentally touched and leaking out when the first shell unit 120 and the second shell unit 130 are separated, the filter unit 200 is designed on the first shell unit 120 to cover the dust collecting bin 113, so that after the first shell unit 120 is disassembled, the filter unit 200 needs to be removed to dump the garbage, and the embedded design of the filter unit 200 makes the assembly and disassembly of the filter unit 200 more convenient. However, in other embodiments of the present application, the filter unit 200 can be designed to be installed on the second shell unit 130, so that when the first shell unit 120 and the second shell unit 130 are separated, the dust collecting bin 113 can be directly exposed to facilitate the dumping of garbage, and the filter unit 200 can be installed on the first shell unit 120 or the second shell unit 130 by other methods such as snap-on, magnetic suction or threaded connection to achieve fixed installation of the filter unit 200.

[0031] For the cleaning head 300 described above, see Figure 4 The cleaning head 300 is partially received in the dust collecting bin 113, and the cleaning head 300 includes a fixing element 310 and bristles 320 fixed on the fixing element 310, and the bristles 320 at least partially extend out of the inlet 111. Specifically, the fixing element 310 is cylindrical on the side away from the bristles 320 and is sleeved on the output shaft of the ultrasonic generator 400 to transmit the power of the ultrasonic generator 400 to the bristles 320. There are multiple bristles 320, and the multiple bristles 320 are distributed on the fixing element 310 in a circumferential array.

[0032] Preferably, the fixing element 310 is detachably mounted on the output shaft of the ultrasonic generating device 400. When the user does not need to use the brush function, the user can remove the cleaning head 300 and directly use the vacuum function, and can be used in contact with the cleaning surface. In addition, different cleaning heads 300 can be designed for users to replace. On the one hand, it can be used to replace worn cleaning heads 300. On the other hand, cleaning heads 300 of different sizes and different hardness of bristles 320 can be configured to meet the different needs of users, thereby improving the user experience.

[0033] For the ultrasonic generating device 400, please refer to Figure 2 , and combined with Figure 3 , the ultrasonic generator 400 is located upstream of the wind force member 500, the dust removal device 1 also includes a mounting unit 600, the mounting unit 600 is fixed to the shell 100, the ultrasonic generator 400 and the wind force member 500 are respectively mounted on the mounting unit 600, the mounting unit 600 is a cylindrical structure adapted to the cavity 110, the ultrasonic generator 400 is fixedly mounted on the mounting unit 600, and the ultrasonic generator 400 is arranged axially and coaxial with the first shell unit 120. Specifically, the fixing element 310 is provided with a mounting hole 311, the mounting hole 311 and the output shaft of the ultrasonic generator 400 are adapted in shape and are both "D" shaped, and the output shaft of the ultrasonic generator 400 is plugged into the mounting hole 311, so that the ultrasonic generator 400 drives the cleaning head 300 to vibrate. It should be noted that the present application does not limit the specific shape of the mounting unit 600, so as to achieve the fixed installation of the ultrasonic generator 400 on the shell 100. It should also be noted that, in the embodiment of the present application, the mounting hole 311 and the output shaft of the ultrasonic generating device 400 are both in a "D" shape in order to strengthen the installation between the cleaning head 300 and the ultrasonic generating device 400, so as to prevent slippage between the mounting hole 311 and the output shaft, but the present application does not limit the shape of the mounting hole 311 and the output shaft of the ultrasonic generating device 400. In other embodiments of the present application, the mounting hole 311 and the output shaft of the ultrasonic generating device 400 may be in other shapes such as a prism, a prism or a frustum, so as to realize the driving of the cleaning head 300 by the ultrasonic generating device 400.

[0034] For the above wind force member 500, please refer to Figure 2 and Figure 3 The wind force element 500 is accommodated in the accommodation chamber 112 and fixedly installed on the second shell unit 130. In the embodiment of the present application, the wind force element 500 is a motor and a fan blade, but the present application does not limit the specific structure of the wind force element 500. In other embodiments of the present application, the wind force element 500 can be replaced by fans or other power equipment of different specifications and models to achieve the driving gas flow.

[0035] Preferably, the dust removal device 1 further includes a shock absorbing device 700, see Figure 2 and Figure 3 The shock absorbing device 700 is an annular sleeve made of silicone material. The shock absorbing device 700 is sleeved on the outside of the wind force member 500. The outer wall of the shock absorbing device 700 is provided with a plurality of convex points 710. The plurality of convex points 710 are distributed in an array on the shock absorbing device 700. The shock absorbing device 700 is used to reduce the vibration of the wind force member 500. It should be noted that the present application does not limit the specific structure of the shock absorbing device 700. In other embodiments of the present application, the shock absorbing device 700 may also be an elastic member or a sponge.

[0036] Furthermore, the dust removal device 1 also includes a power supply 11, see Figure 2 and Figure 3 The power supply 11 is accommodated in the accommodation chamber 112, and the power supply 11 is used to power the ultrasonic generating device 400 and the wind force member 500. Specifically, the second shell unit 130 includes a barrel portion 131 and a bottom plate portion 132 connected by a snap-on connection. The barrel portion 131 is in a cylindrical shape, and the bottom plate portion 132 is a plate-like structure. The barrel portion 131 and the bottom plate portion 132 enclose the accommodation chamber 112.

[0037] Preferably, the cylinder 131 is provided with an air outlet 131a, the air outlet 131a is in the shape of a rectangular hole, the number of the air outlet 131a is multiple, and the multiple air outlets 131a are distributed on the cylinder 131 around the radial circumference array, and the air outlet 131a is used to discharge the filtered air. It should be noted that the present application does not limit the specific number, shape and distribution position of the air outlet 131a, so as to achieve the outflow of airflow. Among them, the axial direction refers to the overall flow direction of the airflow, and the radial direction is perpendicular to the axial direction. In the present application, the shell 100 is cylindrical as a whole, so the axial direction is the height direction of the cylindrical shell 100, and the radial direction is the diameter direction of the shell 100. In other embodiments of the present application, if the shell 100 is not cylindrical, the overall flow direction of the airflow has a large bend, then the axial direction is the main flow direction of the gas in the shell 100 of this section, and the radial direction is perpendicular to the axial direction.

[0038] Furthermore, the dust removal device 1 is provided with a charging interface, which is a USB Type-C interface. The USB Type-C interface is partially exposed on the bottom plate portion 132, and the user can charge the dust removal device 1 through a Type-C charging cable. It should be noted that the present application does not limit the type of charging interface. In other embodiments of the present application, the charging interface may also be a Micro USB interface or a Lightning interface, or may be designed as a special-shaped interface or wireless charging. In the present application, the USB Type-C interface is provided on the bottom plate portion 132 to prevent the user from touching the interface when holding the dust removal device 1, but the present application does not limit the specific position of the USB Type-C interface. In other embodiments of the present application, the USB Type-C interface may also be designed on the barrel portion 131 or on the first housing unit 120.

[0039] Preferably, in order to prevent the garbage collected in the dust collecting bin 113 from leaking out from the inlet 111, the dust removal device 1 further includes an anti-backflow element 800, see Figure 7 and Figure 8 , and combined with Figure 2The dust collecting bin 113 is provided with a front air passage 114 near the inlet 111, the backflow prevention element 800 is provided on the first front shell 100 and is located at the front air passage 114, and the backflow prevention element 800 at least partially blocks the front air passage 114, the backflow prevention element 800 is a circular flexible sheet, and the dust removal device 1 includes a fixing unit 900, and the fixing unit 900 is used to fix the backflow prevention element 800 to the first front shell 100, specifically, the fixing unit 900 includes a fixing The fixing member 910 and the connecting member 920 are respectively connected to the fixing member 910 and the first front shell 100. The fixing member 910 is an annular sleeve structure. The fixing element 310 is arranged through the fixing member 910. The anti-backflow element 800 has a fixed end 801 and a movable end 802 relative to each other. The fixed end 801 is bonded to the fixing member 910 on the side axially away from the inlet 111. The movable end 802 will be displaced to change the blocking degree of the front airway 114. The connecting member 920 is respectively connected to the fixing member 910 and the first front shell 100 in the radial direction. Under the action of wind pressure, the anti-backflow element 800 adjusts the blocking degree of the front airway 114 by deformation or rotation, so that the inlet 111 can normally inhale garbage when the dust removal device 1 is in operation, and the inlet 111 can be closed when the dust removal device 1 stops to prevent garbage from leaking out, thereby facilitating user operation and use, thereby improving user experience. It should be noted that in the embodiment of the present application, in order to simplify the structure and reduce the cost, the backflow prevention element 800 adopts a flexible sheet, and the backflow prevention element 800 shields and opens the front airway 114 through its own elasticity, but the present application does not limit this. In other embodiments of the present application, the backflow prevention element 800 can also be fixed to the fixing member 910 by a hard plate-like structure through a rotating shaft, and shield and open the front airway 114 by setting an elastic member. It should also be noted that the present application does not limit the specific structure of the fixing unit 900, so that the backflow prevention element 800 can be installed on the first front shell 100.

[0040] Preferably, the anti-backflow element 800 is provided with a stroke expansion portion 810, and the stroke expansion portion 810 is used to expand the movement range of the anti-backflow element 800. Specifically, the stroke expansion portion 810 is a hollow groove, and the design of the hollow groove can reduce the cross-sectional area of ​​the anti-backflow element 800, so as to facilitate the deformation of the anti-backflow element 800 when subjected to wind pressure. It should be noted that the present application does not limit the specific structure of the stroke expansion portion 810. In some embodiments of the present application, the stroke expansion portion 810 can also be a pleated structure.

[0041] Furthermore, the backflow prevention element 800 is designed as two semicircular sheet structures, thereby further enhancing the deformation effect.

[0042] Furthermore, in some embodiments of the present application, the fixing element 310 is provided with a limiting portion (not shown) on the axial side close to the inlet 111, and the limiting portion is used to limit the movement range of the cleaning head 300 to prevent the user from damaging the ultrasonic generating device 400 by applying excessive force when installing the cleaning head 300.

[0043] Preferably, the outer contour of one side of the first front shell portion 100 close to the inlet 111 is contracted so that the cross-sectional area of ​​the inlet 111 is smaller than the cross-sectional area of ​​the dust collecting bin 113, thereby increasing the wind pressure at the inlet 111 when the wind force of the wind force element 500 is constant, thereby facilitating the suction of garbage.

[0044] Preferably, the backflow prevention element 800 is arranged at an acute angle to the gas flow direction of the front airway 114, and the fixed end 801 is located upstream of the movable end 802 in the gas flow direction of the front airway 114, thereby increasing the cross-sectional area of ​​the backflow prevention element 800 and thus increasing the elastic effect.

[0045] Preferably, the plurality of bristles 320 are arranged to be inclined outward away from the center, so that the bristles 320 are distributed radially outward on the fixing element 310, thereby increasing the cleaning area of ​​the bristles 320 and improving the cleaning efficiency.

[0046] Preferably, the end face of the first shell unit 120 on one side of which the inlet 111 is opened is set at an acute angle to the air intake direction at the inlet 111. The acute angle setting can obtain a section with a larger cross-sectional area than the inlet 111 with a smaller cross-sectional area of ​​the inlet 111, so that the cleaning head 300 can have a larger area to absorb flat garbage when it is disassembled.

[0047] The dust removal device 1 of the embodiment of the present application is provided with a cleaning head 300 and an ultrasonic generating device 400. The ultrasonic generating device 400 drives the cleaning head 300 to vibrate, thereby sweeping away the garbage attached to the surface to be cleaned, thereby achieving powerful cleaning. The user does not need to use an additional brush head to clean the surface to be cleaned, which is simpler, more convenient and more efficient to use.

[0048] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in the specification. These embodiments are not intended to be additional limitations on the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive. In addition, the above-mentioned technical features continue to be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the present invention; further, for ordinary technicians in this field, they can be improved or transformed according to the above description, and all these improvements and transformations should belong to the scope of protection of the claims attached to the present application.

Claims

1. A dust removal device, characterized in that: include: A shell portion, wherein a cavity is provided inside, and the cavity penetrates through one end of the shell portion to form an entrance; A filter unit, the filter unit is arranged in the cavity, and the filter unit is used to filter garbage in the airflow; A cleaning head, the cleaning head portion is received in the cavity, the cleaning head comprises a fixing element and bristles fixed on the fixing element, the bristles at least partially extending out of the inlet; An ultrasonic generating device, the ultrasonic generating device is accommodated in the cavity, the fixing element is connected to the ultrasonic generating device, and the ultrasonic generating device is used to drive the cleaning head to vibrate; as well as A wind force piece is housed in the cavity and is used to drive airflow so that garbage outside the inlet is sucked into the cavity.

2. The dust removal device according to claim 1, characterized in that: The dust removal device also includes a mounting unit, which is fixed to the shell, and the ultrasonic generating device and the wind force member are respectively mounted on the mounting unit.

3. The dust removal device according to claim 2, characterized in that: The ultrasonic generating device is located upstream of the wind force element, the filter unit is in the shape of an annular column, the ultrasonic generating device passes through the filter unit, and / or the fixing element passes through the filter unit, and the ultrasonic generating device and the filter unit separate the cavity into a receiving chamber and a dust collecting bin, the wind force element is received in the receiving chamber, and the cleaning head portion is received in the dust collecting bin.

4. The dust removal device according to claim 1, characterized in that: The fixing element is provided with a mounting hole, and the output shaft of the ultrasonic generating device is plugged into the mounting hole, so that the ultrasonic generating device drives the cleaning head to vibrate.

5. The dust removal device according to claim 4, characterized in that: The shapes of the mounting hole and the output shaft of the ultrasonic generating device are matched and both are in a "D" shape.

6. The dust removal device according to any one of claims 1 to 5, characterized in that: The cavity is provided with a front end air duct near the entrance, and the dust removal device also includes an anti-backflow element, which at least partially blocks the front end air duct. The anti-backflow element adjusts the degree of blocking of the front end air duct by deformation or rotation under the action of wind pressure.

7. The dust removal device according to claim 6, characterized in that: The anti-backflow element is set at an acute angle to the gas flow direction of the front-end airway. The anti-backflow element has a fixed end and a movable end relative to each other. The fixed end is fixed to the shell, and the movable end will be displaced to change the blocking degree of the front-end airway, and the fixed end is located upstream of the movable end in the gas flow direction of the front-end airway.

8. The dust removal device according to claim 6, characterized in that: The outer contour of one side of the shell portion close to the inlet is contracted, and the cross-sectional area of ​​the inlet is smaller than the cross-sectional area of ​​the cavity.

9. The dust removal device according to claim 6, characterized in that: The end surface of the shell portion on the side where the inlet is opened is arranged at an acute angle with the air intake direction at the inlet.

10. The dust removal device according to claim 6, characterized in that: The dust removal device also includes a shock absorbing device, which is arranged on the wind force member and is used to reduce the vibration of the wind force member.

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