Dust collecting device and acarus killing equipment

Abstract

The dust collecting device comprises a dust cup, the dust cup comprises a cup body and a cup cover, an air inlet and an air outlet are formed in the cup body, an isolation blocking wall dividing the space in the cup body into a cyclone separation cavity and a dust collecting cavity is formed in the cup body, a dust collecting opening is formed in the isolation blocking wall, and a dust collecting opening is formed in the dust collecting opening. A cyclone flow channel wall spirally extending from the air inlet along the inner peripheral wall of the cyclone separation chamber is arranged in the cyclone separation chamber; the cyclone separator is arranged in the cyclone separation chamber and is constructed to be suitable for separating air and dust in the dust-containing airflow, and the air inlet, the cyclone separation chamber, the cyclone separator and the air outlet are in airflow communication in sequence; and the air door is movably arranged on the dust collecting opening between an opening position and a closing position, and the air door is configured to be capable of moving from the closing position to the opening position under the action of centrifugal force of the dust-containing airflow, so that dust in the dust-containing airflow is thrown into the dust collecting chamber from one side of the cyclone separation chamber to one side of the dust collecting chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of surface cleaning equipment, in particular to a dust collecting device and a mite removal device with the dust collecting device. Background Art

[0002] As a household appliance, a mite remover is mainly used to clean dust mites, dander, fine particles and other dust from fabrics such as beds, sofas, and carpets. The mite remover usually includes a cleaning base suitable for moving on the surface of the fabric to be cleaned. The cleaning base is usually provided with a suction port and a flapper. The flapper flaps the surface of the fabric, thereby beating out mites, dander, fine particles and other dust deep in the fabric through vibration, and then sucking out the mites, dander, fine particles and other dust through the suction port. The cleaning base is usually provided with a dust cup and a negative pressure source. The dust cup is equipped with a cyclone separator for filtering dust and air. The dust-laden airflow is sucked into the dust cup by the suction port. The dust-laden airflow entering the dust cup performs a spiral motion in the cyclone separation chamber of the dust cup. The dust in the dust-laden airflow is separated from the air by the cyclone separator, and the separated dust is thrown from the cyclone separation chamber into the dust collection chamber of the dust cup. The separated air is then drawn away by the negative pressure source and discharged into the external environment. After the user turns off the mite remover, some dust has accumulated in the dust collection chamber. When the user moves the handheld mite remover to clean other fabric surfaces or other fabrics, the dust in the dust collection chamber tends to flow back into the cyclone separation chamber and out of the mite remover's suction port, causing secondary contamination of the fabric surface or other surfaces to be cleaned (such as the floor). Therefore, the dust collection effect of the existing dust cup structure is not ideal, which brings inconvenience to the user's cleaning operation. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a dust collecting device with better dust collecting effect and a mite removal device having the dust collecting device.

[0004] In order to solve the above technical problems, on the one hand, the utility model provides a dust collecting device, comprising: a dust cup, comprising a cup body and a cup cover mounted on the cup body, the cup body is configured with an air inlet and an air outlet, the interior of the cup body is configured with an isolation baffle wall that divides the space inside the cup body into a cyclone separation chamber and a dust collecting chamber, the isolation baffle wall is configured with a dust collecting port connecting the cyclone separation chamber and the dust collecting chamber, and the cyclone separation chamber is configured with a cyclone flow channel wall that spirally extends from the air inlet along the inner peripheral wall of the cyclone separation chamber. ; A cyclone separator is installed in the cyclone separation chamber and is constructed to separate air and dust in the dust-laden airflow, and the air inlet, the cyclone separation chamber, the cyclone separator, and the air outlet are connected in sequence; an air damper is movably provided on the dust collecting port between an open position and a closed position, and the air damper is constructed to be able to move from the closed position to the open position under the centrifugal force of the dust-laden airflow, so that the dust in the dust-laden airflow is thrown from the side of the cyclone separation chamber toward the side of the dust collecting chamber into the dust collecting chamber.

[0005] According to one embodiment of the present invention, one end of the damper is rotatably connected to the isolation baffle wall around a vertical axis and is located in the dust collecting chamber; or, one end of the damper is rotatably connected to the isolation baffle wall around a horizontal axis and is located in the dust collecting chamber.

[0006] According to an embodiment of the present invention, the air door is mounted on the dust collecting port via a hinge; or, the air door is mounted on the dust collecting port via a hinge.

[0007] According to one embodiment of the present invention, it also includes a reset mechanism arranged between the damper and the isolation barrier and constructed to be suitable for applying a force to the damper to keep the damper in the closed position. The damper is constructed to be able to overcome the force applied to the damper by the reset mechanism under the action of the centrifugal force of the dust-laden airflow and move from the closed position to the open position.

[0008] According to an embodiment of the present invention, the reset mechanism is a spring or a damper.

[0009] According to an embodiment of the present invention, an opening is provided on the upper portion of the cup body, the cup cover is detachably mounted on the opening on the upper portion of the cup body, and the isolation barrier is formed integrally with the cup body.

[0010] According to an embodiment of the present invention, the dust collection port is located on the upper portion of the isolation baffle and is arranged adjacent to the cup cover.

[0011] According to one embodiment of the present invention, a mounting portion is provided on the lower surface of the cup cover, a receiving groove is constructed at the inner bottom of the cyclone separation chamber, the top of the cyclone separator is detachably mounted on the mounting portion, and the bottom of the cyclone separator is received in the receiving groove.

[0012] According to an embodiment of the present invention, the cyclone separator includes a filter cartridge and a filter installed in the filter cartridge, and at least a portion of the peripheral side wall of the filter cartridge is formed with a filter screen.

[0013] On the other hand, the utility model also provides a mite removal device, comprising: a cleaning base, suitable for moving from back to front on the surface to be cleaned, the cleaning base comprising a shell, a dust suction port arranged at the bottom of the shell and constructed to be suitable for sucking the dust-laden airflow on the surface to be cleaned; a beating device, arranged on the shell and constructed to be suitable for beating the surface to be cleaned; a dust collecting device according to any one of the above technical solutions, installed on the shell and the air inlet is connected to the dust suction port; a negative pressure source, arranged on the shell and connected to the air outlet, the negative pressure source being constructed to be suitable for generating a negative pressure airflow entering the dust collecting device from the dust suction port.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] A dust collecting port is provided on the isolation baffle between the cyclone separation chamber and the dust collecting chamber, and an air damper is installed on the dust collecting port. The air damper is movably provided on the dust collecting port between an open position and a closed position. The air damper is constructed to be able to move from a closed position to an open position under the centrifugal force of the dust-laden airflow, so that the dust in the dust-laden airflow is thrown from the side of the cyclone separation chamber toward the side of the dust collecting chamber into the dust collecting chamber. The air damper installed at the dust collecting port acts as a one-way valve, which prevents the dust in the dust collecting chamber from flowing back into the cyclone separation chamber and out of the suction port of the mite removal device after the mite removal device is powered off and stops working. Compared with the prior art, the dust collecting device of the utility model has a better dust collecting effect. Accordingly, the mite removal device having the dust collecting device has a better cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of a mite removal device according to an embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A cross-sectional schematic diagram of the mite removal device shown in ;

[0018] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the dust collecting device shown in FIG;

[0019] Figure 4 yes Figure 3 A cross-sectional schematic diagram of the dust collecting device shown in ;

[0020] Figure 5 yes Figure 4 A partial enlarged view of point A shown in FIG;

[0021] Figure 6 yes Figure 4 A partial enlarged view of point B shown in FIG;

[0022] Figure 7 yes Figure 4 Schematic diagram of dust collection principle of dust collection device shown in ;

[0023] The accompanying drawings are numerals as follows:

[0024] 100. Mite removal equipment;

[0025] 10. Cleaning base; 11. Housing; 12. Suction port;

[0026] 20. Beating device; 21. Vibration motor; 22. Beater;

[0027] 30. Dust collection device; 31. Dust cup; 311. Cup body; 312. Cup cover; 3121. Mounting portion; 313. Air inlet; 314. Air outlet; 315. Cyclone separation chamber; 3151. Receiving slot; 316. Dust collection chamber; 317. Isolation barrier; 3171. Dust collection port; 318. Cyclone flow channel wall; 32. Cyclone separator; 321. Filter cartridge; 322. Filter; 323. Filter screen; 33. Damper; 34. Hinge;

[0028] 40. Negative pressure source;

[0029] 50. Handle;

[0030] 60. Cables;

[0031] 70. Switch. DETAILED DESCRIPTION

[0032] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural methods and implementation methods. Therefore, the following specific embodiments and drawings are only illustrative of the technical solution of the present invention and should not be regarded as the entire present invention or as a limitation or restriction of the technical solution of the present invention.

[0033] according to Figure 1 、 Figure 2As shown, an embodiment of the present invention provides a mite removal device 100 , which includes a cleaning base 10 , a beating device 20 , a dust collecting device 30 and a negative pressure source 40 .

[0034] The cleaning base 10 is adapted to move from back to front over the surface to be cleaned while performing a cleaning operation. The surface to be cleaned can be a fabric surface, such as a sofa, clothing, or bed, without limitation. The cleaning base 10 includes a housing 11 and a suction port 12 disposed at the bottom of the housing 11 and configured to draw dust-laden air from the surface to be cleaned. As the cleaning base 10 moves from back to front over the fabric surface, suction is applied to the fabric surface through the suction port 12, thereby removing dust mites, fine particles, and other dust from the fabric surface.

[0035] For the convenience of the dust in the deep layer of fabric being vibrated and patted out from fabric, thereby the dust in the deep layer of fabric is cleaned, housing 11 is provided with the patting device 20 that is suitable for treating the surface to be patted.This patting device 20 comprises a vibration motor 21, a movably arranged on housing 11 bottoms and a patting device 22 positioned at the front sides of suction port 12, this patting device 22 is connected with the vibration motor 21 transmission, drives patting device 22 relative housings 11 by vibration motor 21 to realize up and down reciprocating, thereby treat the surface of the fabric to be cleaned by the mode of high frequency vibration.In other embodiments, patting device 22 also can be rotationally arranged on the roller brush or the roller of housing 11 bottoms, drives roller brush or roller to rotate by motor, thereby treat the surface of the fabric to be cleaned to be vibrated and patted, specifically without restriction.

[0036] The dust collecting device 30 is installed on the shell 11 and is connected to the air flow of the suction port 12. After the mite removal device 100 absorbs dust such as mites and fine particles on the surface of the fabric to be cleaned through the suction port 12, these mites and fine particles and other dust enter the dust collecting device 30 with the air flow for separation and collection. The separated mites and fine particles and other dust remain in the dust collecting device 30, and the separated air is discharged from the dust collecting device 30.

[0037] The negative pressure source 40 is disposed on the housing 11 and is in communication with the dust collecting device 30. The negative pressure source 40 is configured to generate a negative pressure airflow that enters the dust collecting device 30 from the suction port 12. The negative pressure source 40 may be a negative pressure blower. In other embodiments, the negative pressure source 40 may also be a negative pressure pump, without limitation. The negative pressure source 40 generates a negative pressure airflow that enters the dust collecting device 30 from the suction port 12. Dust such as mites and fine particles on the surface of the fabric to be cleaned will enter the dust collecting device 30 from the suction port 12 along with the negative pressure airflow. The mites, fine particles, and other dust are collected by the dust collecting device 30, and the air is drawn away by the negative pressure source 40 and discharged into the external environment.

[0038] In order to facilitate the user to hold the mite removal device 100 for cleaning operations, the mite removal device 100 also includes a handle 50 provided on the shell 11. The handle 50 is also provided with a switch 70 for the user to start and stop the mite removal device 100. In order to facilitate the power supply to the negative pressure source 40, the mite removal device 100 also includes a cable 60 and a plug (not shown in the figure) provided on the shell 11 and electrically connected to the negative pressure source 40. It should be noted that the provision of the cable 60 and the plug is not necessary. In other embodiments, the mite removal device 100 may also include a battery pack provided in the shell 11, and the negative pressure source 40 is powered by the battery pack to enable the mite removal device 100 to perform mobile cleaning operations. There is no specific limitation.

[0039] according to Figure 3 、 Figure 4 As shown, the dust collecting device 30 includes a dust cup 31, a cyclone separator 32 and an air door 33. The dust cup 31 includes a cup body 311 and a cup cover 312 mounted on the cup body 311. An air inlet 313 and an air outlet 314 are constructed on the cup body 311. An opening is provided on the upper part of the cup body 311. In order to facilitate the quick installation and removal of the cup cover 312 from the cup body 311 so as to clean the dust cup 31, the cup cover 312 is detachably mounted on the opening on the upper part of the cup body 311, and a matching snap connection structure is provided between the cup cover 312 and the cup body 311. In other embodiments, the cup cover 312 and the cup body 311 can also be provided with a matching plug-in structure or a matching magnetic connection structure, which is not specifically limited.

[0040] To facilitate the separation and collection of dust from the dust-laden airflow entering the cup body 311 in two separate chambers, a partition wall 317 is constructed within the cup body 311 to divide the space within the cup body 311 into a cyclone separation chamber 315 and a dust collection chamber 316. To facilitate the manufacturing of the cup body 311, the partition wall 317 is integrally formed with the cup body 311. In other embodiments, the partition wall 317 can also be configured to be removably mounted within the cup body 311, such as by forming a slot within the cup body 311 and inserting the partition wall 317 into the slot of the cup body 311 similar to a plate or a tab. This is not particularly limiting.

[0041] A dust collection port 3171 is formed on the isolation barrier 317, connecting the cyclone separation chamber 315 with the dust collection chamber 316. The dust collection port 3171 is located at the upper portion of the isolation barrier 317, adjacent to the cup cover 312. After the dust-laden airflow enters the cyclone separation chamber 315 from the air inlet 313, the dust in the dust-laden airflow can enter the dust collection chamber 316 through the dust collection port 3171. In order to facilitate the spiral movement of the dust-laden airflow entering the cyclone separation chamber 315, so that the dust in the dust-laden airflow can be thrown into the dust collecting chamber 316 through the dust collecting port 3171 under the action of centrifugal force, the cyclone separation chamber 315 is constructed with a cyclone flow channel wall 318 that spirally extends from the air inlet 313 along the inner circumferential wall of the cyclone separation chamber 315. The dust-laden airflow entering the cyclone separation chamber 315 through the air inlet 313 can move along the cyclone flow channel wall 318, thereby spirally moving around the inner circumferential wall of the cup body 311.

[0042] Since the dust collecting port 3171 is arranged at the upper part of the isolation barrier 317 and close to the cup cover 312, the dust in the dust-laden air flow entering the cyclone separation chamber 315 obtains a greater centrifugal force when passing through the dust collecting port 3171 after rotating multiple times, and can be more easily thrown into the dust collecting chamber 316 through the dust collecting port 3171.

[0043] The cyclone separator 32 is installed in the cyclone separation chamber 315 and is configured to separate air and dust from the dust-laden airflow. The air inlet 313, the cyclone separation chamber 315, the cyclone separator 32, and the air outlet 314 are sequentially connected. After the dust collection device 30 is installed on the housing 11 of the mite removal device 100, the air inlet 313 is connected to the suction port 12, and the air outlet 314 is connected to the negative pressure source 40. The dust-laden airflow on the surface of the fabric to be cleaned is sucked in by the suction port 12 and enters the cyclone separation chamber 315 through the air inlet 313. The dust and air in the dust-laden airflow are separated in the cyclone separation chamber 315 by the cyclone separator 32. The separated dust can be thrown into the dust collection chamber 316 through the dust collection port 3171 under the action of centrifugal force. The separated air is then drawn away by the negative pressure source 40 through the air outlet 314 and discharged into the external environment.

[0044] To enhance the dust filtering effectiveness of the cyclone separator 32, the cyclone separator 32 includes a filter cartridge 321, a filter 322 mounted within the filter cartridge 321, and a filter screen 323 formed around the sidewalls of the filter cartridge 321. The filter 322 can be a HEPA filter 322. In other embodiments, the filter 322 can be combined with other filter components to form a filter assembly with multiple filtering functions, such as a primary filter 322, a filter sponge, or an activated carbon filter 322. The filter cartridge 321 can have filter screens partially or entirely disposed around its sidewalls, without limitation.

[0045] according to Figure 5 、 Figure 6 As shown, to facilitate installation of the cyclone separator 32 in the cup body 311, a mounting portion 3121 is provided on the lower surface of the cup cover 312, and a receiving groove 3151 is configured at the bottom of the cyclone separation chamber 315. The top of the cyclone separator 32 is detachably mounted on the mounting portion 3121, and the bottom of the cyclone separator 32 is received within the receiving groove 3151. The mounting portion 3121 and the top of the cyclone separator 32 are configured to form a mating snap-fit ​​structure. In other embodiments, the mounting portion 3121 and the top of the cyclone separator 32 may also be configured to form a mating plug-in structure or a mating magnetic structure, without limitation.

[0046] By detachably mounting the cyclone separator 32 on the cup cover 312 , when the cup cover 312 is removed from the opening at the top of the cup body 311 , the cyclone separator 32 can be removed from the cyclone separation chamber 315 of the cup body 311 together with the cup cover 312 , making cleaning more convenient.

[0047] according to Figure 4 、 Figure 5 As shown, the damper 33 is movably arranged on the dust collecting port 3171 between an open position and a closed position. The damper 33 is constructed to be able to move from a closed position to an open position under the action of the centrifugal force of the dust-laden airflow, so that the dust in the dust-laden airflow is thrown into the dust collecting chamber 316 from the side of the cyclone separation chamber 315 toward the side of the dust collecting chamber 316.

[0048] Specifically, in this embodiment, one end of the damper 33 is rotatably connected to the isolation barrier 317 about a vertical axis and is located within the dust collection chamber 316. The damper 33 is mounted on the dust collection port 3171 via a hinge 34. A spring (not shown) is provided between the damper 33 and the isolation barrier 317 for resetting the damper 33. After the dust-laden airflow enters the cyclone separation chamber 315, the dust in the dust-laden airflow overcomes the elastic force of the spring under the action of centrifugal force and pushes the damper 33 from the closed position to the open position, thereby being flung through the dust collection port 3171 into the dust collection chamber 316. In other embodiments, the damper 33 may also be mounted on the dust collection port 3171 via a hinge; alternative resetting mechanisms, such as dampers, may be used in place of the spring. The damper 33 is constructed so that it can move from the closed position to the open position under the action of the centrifugal force of the dust-laden airflow, overcoming the force applied by the resetting mechanism on the damper 33.

[0049] In other embodiments, a return mechanism such as a spring may not be provided between the damper 33 and the isolation barrier 317. When the dust collecting device 30 is mounted vertically on the cleaning base of the mite removal device, the damper 33 may have one end rotatably connected to the isolation barrier 317 about a horizontal axis and positioned within the dust collecting chamber 316. For example, a horizontally extending shaft may be rotatably mounted above the dust collecting port 3171, with one end of the damper 33 connected to the shaft. This allows the damper 33 to naturally fall down under its own weight and close at the dust collecting port 3171. When the dust-laden airflow enters the cyclone separation chamber 315, the damper 33 may rotate about the horizontal axis under the centrifugal force of the dust-laden airflow and move from a closed position to an open position, causing dust in the dust-laden airflow to be flung from the cyclone separation chamber 315 toward the dust collecting chamber 316 and into the dust collecting chamber 316. This is not particularly limited.

[0050] according to Figure 7 As shown, the working principle of this embodiment is as follows: when the mite removal device 100 is working, the suction port 12 absorbs the dust-laden airflow on the surface of the fabric to be cleaned, and the dust-laden airflow enters the cyclone separation chamber 315 of the dust collecting device 30 through the air inlet 313, and spirally moves around the outer peripheral side of the cyclone separator 32 along the cyclone flow channel wall 318 and rises. The dust and air in the dust-laden airflow are separated by the cyclone separator 32. The separated dust pushes the damper 33 at the dust collecting port 3171 under the action of centrifugal force, so that the damper 33 moves from the closed position to the open position, and the dust is thrown into the dust collecting chamber 316 through the dust collecting port 3171. The separated air is discharged from the dust collecting device 30 through the air outlet 314 and is sucked away by the negative pressure source 40, and then the negative pressure source 40 discharges the air to the external environment. When the mite removal device 100 stops working, the damper 33 at the dust collecting port 3171 moves from the open position to the closed position again under the action of the elastic force of the spring, thereby closing the dust collecting port 3171, preventing the dust in the dust collecting chamber 316 from flowing back into the cyclone separation chamber 315 and flowing out from the suction port 12 of the mite removal device.

[0051] The damper 33 installed at the dust collection port 3171 functions as a one-way valve. When the mite removal device 100 is powered off and stops operating, it prevents dust in the dust collection chamber 316 from flowing back into the cyclone separation chamber 315 and out of the suction port 12 of the mite removal device 100. Compared to the prior art, the dust collection device 30 of the present invention has a better dust collection effect. Accordingly, the mite removal device 100 equipped with this dust collection device 30 has a better cleaning effect.

[0052] The technical scope of the present invention is not limited to the contents of the above description. Those skilled in the art can make various deformations and modifications to the above embodiments without departing from the technical concept of the present invention, and these deformations and modifications should all fall within the scope of protection of the present invention.

Claims

1. A dust collecting device, characterized in that: include: A dust cup comprising a cup body and a cup cover mounted on the cup body, the cup body being configured with an air inlet and an air outlet, the interior of the cup body being configured with an isolation barrier wall for dividing the space inside the cup body into a cyclone separation chamber and a dust collection chamber, the isolation barrier wall being configured with a dust collection port communicating with the cyclone separation chamber and the dust collection chamber, the cyclone separation chamber being configured with a cyclone flow channel wall spirally extending from the air inlet along the inner peripheral wall of the cyclone separation chamber; a cyclone separator installed in the cyclone separation chamber and configured to separate air and dust in the dust-laden airflow, wherein the air inlet, the cyclone separation chamber, the cyclone separator, and the air outlet are sequentially connected by airflow; The damper is movably arranged on the dust collecting port between an open position and a closed position. The damper is constructed so that it can move from the closed position to the open position under the centrifugal force of the dust-laden airflow, so that the dust in the dust-laden airflow is thrown into the dust collecting chamber from the side of the cyclone separation chamber toward the side of the dust collecting chamber.

2. The dust collecting device according to claim 1, characterized in that: One end of the damper is rotatably connected to the isolation wall around a vertical axis and is located in the dust collecting chamber; Alternatively, one end of the air door is rotatably connected to the isolation wall around a horizontal axis and is located in the dust collecting chamber.

3. The dust collecting device according to claim 2, characterized in that: The air door is mounted on the dust collecting port via a hinge; Alternatively, the air door is mounted on the dust collecting port via a hinge.

4. The dust collecting device according to claim 1, wherein: It also includes a reset mechanism arranged between the damper and the isolation barrier and constructed to apply a force to the damper to keep the damper in the closed position. The damper is constructed to be able to move from the closed position to the open position under the action of the centrifugal force of the dust-laden airflow, overcoming the force applied to the damper by the reset mechanism.

5. The dust collecting device according to claim 4, characterized in that: The reset mechanism is a spring or a damper.

6. The dust collecting device according to claim 1, characterized in that: An opening is provided on the upper portion of the cup body, the cup cover is detachably mounted on the opening on the upper portion of the cup body, and the isolation baffle is formed integrally with the cup body.

7. The dust collecting device according to claim 1, characterized in that: The dust collecting port is located on the upper part of the isolation baffle wall and is arranged adjacent to the cup cover.

8. The dust collecting device according to claim 1, characterized in that: A mounting portion is provided on the lower surface of the cup cover, a receiving groove is configured on the inner bottom of the cyclone separation chamber, the top of the cyclone separator is detachably mounted on the mounting portion, and the bottom of the cyclone separator is received in the receiving groove.

9. The dust collecting device according to claim 1, characterized in that: The cyclone separator comprises a filter cartridge and a filter installed in the filter cartridge. At least a portion of the peripheral side wall of the filter cartridge is formed with a filter screen.

10. A mite removal device, characterized in that: include: A cleaning base adapted to move from back to front on a surface to be cleaned, the cleaning base comprising a housing, and a suction port disposed at the bottom of the housing and configured to suck dust-laden airflow from the surface to be cleaned; a beating device, disposed on the housing and configured to be suitable for beating the surface to be cleaned; The dust collecting device according to any one of claims 1 to 9, mounted on the housing and with the air inlet communicating with the dust suction port; A negative pressure source is provided on the shell and is in communication with the air outlet. The negative pressure source is configured to generate a negative pressure airflow that enters the dust collecting device from the suction port.

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