CN215777750U - Cleaning device - Google Patents

Abstract

A cleaning device, comprising: dust collecting device and air current generate device still includes: second motor and wind channel, wherein: the air flow generating device is used for driving air to flow so as to generate air flow; the dust collecting device is used for collecting foreign matters in the airflow; the inlet of the air duct is communicated with the dust collecting device, the outlet of the air duct faces the airflow generating device, and the air duct is used for guiding the flow direction of the airflow; the second motor is arranged in the air duct and used for driving the rolling brush to rotate. Above-mentioned scheme can provide a neotype cleaning device, and this scheme makes integrated air current produce the device and be used for driving the second motor of round brush in the less cleaning device of volume to become possible, and the cleaning device during operation, and the air current that the air current produced produces the device can cool down the second motor in the wind channel, ensures the performance of second motor and can prolong the life of second motor.

Description

Cleaning device

Technical Field

The embodiment of the utility model relates to the technical field of household appliances, in particular to cleaning equipment.

Background

In the cleaning apparatus, a motor is generally provided as a suction motor to generate a suction force by which foreign substances on the surface of the object to be cleaned are sucked. In some large-sized cleaning devices with a larger volume, in order to improve the cleaning effect, a corresponding cleaning assembly can be arranged, and another motor is used as a transmission motor to drive a rolling brush in the cleaning assembly, so that foreign matters adhered to or hidden on the surface of the object to be cleaned are scraped, and the cleaning of the foreign matters on the surface of the object to be cleaned is further facilitated.

In the existing cleaning device, two motors are configured to work independently, namely, a transmission motor drives a rolling brush in a cleaning assembly to scrape foreign matters adhered to or hidden on the surface of an object to be cleaned. The suction motor sucks the foreign matters away along with the air flow, and the foreign matters are collected through a specially arranged pipeline.

The two motors cannot be configured for some cleaning devices with smaller volume due to the limitation of the volume and space of the cleaning device.

SUMMERY OF THE UTILITY MODEL

An object of an embodiment of the present invention is to provide a novel cleaning apparatus, so that it is possible to integrate an airflow generating device and a second motor for driving a rolling brush in the cleaning apparatus with a small size, and when the cleaning apparatus works, the airflow generated by the airflow generating device can cool the second motor in an air duct, thereby ensuring the performance of the second motor and prolonging the service life of the second motor.

To achieve the above object, an embodiment of the present invention provides a cleaning apparatus, including: dust collecting device and air current generate device still includes: second motor and wind channel, wherein: the air flow generating device is used for driving air to flow so as to generate air flow; the dust collecting device is used for collecting foreign matters in the airflow; the inlet of the air duct is communicated with the dust collecting device, the outlet of the air duct faces the airflow generating device, and the air duct is used for guiding the flow direction of the airflow; the second motor is arranged in the air duct and used for driving the rolling brush to rotate.

Compared with the prior art, the technical scheme of the embodiment of the utility model has the following beneficial effects:

the cleaning equipment provided by the embodiment of the utility model can comprise a dust collecting device, an airflow generating device, a second motor and an air duct, wherein the air duct is used for guiding the flow direction of the airflow generated by the airflow generating device, the inlet of the air duct is communicated with the dust collecting device, the outlet of the air duct faces the airflow generating device, the second motor is used for driving the rolling brush to rotate, and the second motor is arranged in the air duct. The inlet configuration through with the wind channel switches on with dust collecting device, and the export in wind channel is towards the air current and is produced the device to and set up the second motor in the wind channel, can realize the space rational utilization in the cleaning assembly, realize that can integrative integration have air current to produce device and second motor in cleaning equipment, realize that it is less in some volumes, lay second motor and round brush in the limited cleaning equipment in space, improve miniature cleaning equipment's cleaning performance. Meanwhile, the second motor is arranged in the air duct, so that when the air flow flows through the air duct, the heat of the second motor can be taken away, the second motor is cooled, the performance of the second motor is improved, and the service life of the second motor is prolonged.

Optionally, the cleaning device includes a housing, and a plurality of side walls are disposed along an inner wall of the housing, and the plurality of side walls and a part of an inner wall of the housing form the air duct.

Optionally, when the side wall includes the bent portion, the bent portion faces the surface of the inside of the air duct to form an arc surface. The surface of the bending part facing the inside of the air duct is set to be the cambered surface, so that the weakening degree of the bending part on the air flow strength can be reduced, and the influence of the bending part on the attenuation of the air flow strength is reduced.

Optionally, the angle of the arc is greater than 90 °.

Optionally, a part of the airflow generating device passes through the outlet of the air duct and extends into the air duct to avoid leakage of the airflow as much as possible, so as to ensure the strength of the airflow.

Optionally, the cleaning device further comprises a rolling brush chamber and a flow guide structure, wherein the rolling brush chamber is used for placing the rolling brush; the flow guide structure is used for guiding the airflow flowing out of the outlet of the rolling brush chamber to enter the dust collecting device.

Optionally, an inlet of the flow guide structure is communicated with the roller brush chamber, an outlet of the flow guide structure is communicated with an inlet of the dust collecting device, and the size of the inlet of the flow guide structure is larger than that of the outlet of the flow guide structure. To further enhance the strength of the airflow.

Optionally, in a direction from an inlet of the flow guide structure to an outlet of the flow guide structure, the size of the flow guide structure is gradually reduced to smoothly guide a flow direction of the airflow.

Optionally, the rolling brush chamber is provided with an air inlet, and a portion of the rolling brush is exposed to the outside through the air inlet.

Optionally, the dust collecting device is detachably connected to the housing. So as to facilitate the disassembly of the dust collecting device and the arrangement of the foreign matters in the dust collecting device.

Optionally, the dust collecting device includes a dust collecting cup and a filter member, and the filter member is used for keeping the foreign matters in the air flow in the dust collecting cup. The dust collector is used for filtering the foreign matters in the air flow, so that the cleanness of the air discharged from the cleaning equipment can be ensured, and the secondary pollution to the cleaned objects is avoided.

Optionally, the housing is provided with an air outlet, and the air outlet is used for providing an outlet for the air flow which is discharged from the air duct and flows through the air flow generating device.

Optionally, the cleaning device further comprises: a battery for powering the airflow generating device and the second motor. It is contemplated that the battery may be configured as a lithium battery or other rechargeable battery so that when the battery is fully charged, the cleaning device may be used without having to connect the cleaning device to a power source via a cord to further enhance the ease of use of the cleaning device.

Optionally, the housing includes a grip portion, and the battery is located in a cavity of the grip portion.

Optionally, the holding portion includes a first portion and a second portion that are disposed opposite to each other, the battery is located in a cavity of the first portion, and the airflow generating device is located in a cavity of the second portion. The battery and the airflow generating device are arranged in the cavity of the holding part, and the airflow generating device is positioned in the cavity of the second part, so that the limited space in the holding part is fully and effectively utilized, the compactness of the layout among all parts in the cleaning equipment is further improved, and the size of the cleaning equipment is further reduced.

Optionally, the cavity of the first portion is not communicated with the air duct, so as to avoid leakage of the air flow and ensure strength of the air flow in the air duct.

Optionally, the airflow generating device includes a first motor and a fan, the first motor is coupled to the fan, and the first motor drives the fan to rotate.

Drawings

FIG. 1 is a cross-sectional view of a cleaning apparatus in an embodiment of the utility model;

FIG. 2 is a schematic view of a cleaning apparatus in an embodiment of the utility model from a perspective;

fig. 3 is a schematic view of a cleaning apparatus in an embodiment of the utility model from another perspective.

Detailed Description

In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, specific embodiments accompanied with figures are described in detail below.

Referring to fig. 1, a schematic structural diagram of a cleaning apparatus according to an embodiment of the present invention is shown. Fig. 2 is a schematic view of a cleaning device in an embodiment of the utility model from a perspective. Fig. 3 is a schematic view of a cleaning apparatus in an embodiment of the utility model from another perspective. Wherein the X direction in fig. 1 to 3 refers to the axial direction of the roll brush 32, the Y direction is the width direction of the cleaning apparatus 1, and the Z direction is the height direction of the cleaning apparatus 1.

In a specific implementation, with reference to fig. 1 to 3, the cleaning device 1 may comprise: a dust collecting device 70, an air flow generating device 10, a second motor 51, and an air duct 40.

The airflow generating device 10 is used for driving air to flow to generate airflow, so that negative pressure can be generated on the surface of the cleaning device 1, which is in contact with the object to be cleaned, and then foreign matters such as dust and hair on the object to be cleaned are sucked away by suction force generated by the negative pressure.

In some embodiments, the airflow generating device 10 may include a first motor and a fan, wherein the first motor drives the fan to rotate to drive the airflow to generate the airflow. In other embodiments, the airflow generating device 10 may further include a blower. It is understood that other configurations of the airflow generating device 10 may exist, and are not limited to the above examples.

The dust collecting device 70 is used for collecting the foreign matters in the air flow.

The air duct 40 is used for guiding the flow direction of the air flow. The inlet 41 of the air duct 40 communicates with the dust collecting device 70, and the outlet 42 of the air duct 40 faces the airflow generating device 10.

The second motor 51 is disposed in the air duct 40, and the second motor 51 is used for driving the rolling brush 32 to rotate.

As can be seen from the above, the cleaning apparatus 1 provided in the embodiment of the present invention may include a dust collecting device 70, an airflow generating device 10, a second motor 51, and an air duct 40, wherein the air duct 40 is used for guiding the flow direction of the airflow generated by the airflow generating device 10, an inlet 41 of the air duct 40 is communicated with the dust collecting device 70, an outlet 42 of the air duct 40 faces the airflow generating device 10, the second motor 51 is used for driving the rolling brush 32 to rotate, and the second motor 51 is disposed in the air duct 40. By configuring the inlet 41 of the air duct 40 to be communicated with the dust collecting device 70, the outlet 42 of the air duct 40 to face the airflow generating device 10, and disposing the second motor 51 in the air duct 40, the reasonable utilization of the space in the cleaning assembly 1 can be realized, the airflow generating device 10 and the second motor 51 can be integrated in the cleaning device 1, the second motor 51 and the rolling brush 32 can be disposed in some cleaning devices 1 with small volume and limited space, and the cleaning effect of the small cleaning device 1 is improved. Meanwhile, the second motor 51 is disposed in the air duct 40, so that when the air flows through the air duct 40, the heat of the second motor 51 disposed in the air duct 40 can be taken away, and the second motor 51 is cooled, thereby improving the performance of the second motor 51 and prolonging the service life of the second motor 51.

Further, the cleaning device 1 may further comprise a housing 31. A partition 312 is disposed along the inner wall of the housing 31, and the partition 312 and a part of the inner wall of the housing 31 form the air duct 40.

The air duct 40 may not be linear, but may be configured to have a certain curvature according to the arrangement of other components, because of the arrangement of other components in the housing 31. In order to ensure that the air flow has a good air flow intensity after passing through the air duct 40, so as to ensure that the cleaning device 1 has a good cleaning effect. In the embodiment of the present invention, when the partition 312 includes the bent portion 313, the surface of the bent portion 313 facing the inside of the air duct 40 is a curved surface. Wherein the intensity of the air flow is related to the cleaning effect of the cleaning device 1, generally the greater the intensity of the air flow, the better the cleaning effect.

Further, in a non-limiting embodiment, the angle of the camber is greater than 90 °.

In an implementation, a portion of the airflow generating device 10 passes through the outlet 42 of the air duct 40 and extends into the air duct 40, so as to reduce the leakage amount of the airflow and further reduce the loss amount of the strength of the airflow, so as to maintain the strength of the airflow in the air duct 40.

In a specific implementation, the cleaning device 1 may further comprise a roller brush chamber 311 and a flow guiding structure 314. The rolling brush chamber 311 is used for placing the rolling brush 32; the flow guide structure 314 is used for guiding the airflow flowing out from the air outlet 3112 of the roller brush chamber 311 into the dust collecting device 70.

In a specific implementation, the inlet 3141 of the flow guiding structure 314 is communicated with the roller brush chamber 311, the outlet 3142 of the flow guiding structure 314 is communicated with the inlet of the dust collecting device 70, and the size of the inlet 3141 of the flow guiding structure 314 is larger than the size of the outlet 3142 of the flow guiding structure 314. Configuring the size of the inlet 3141 of the flow guiding structure 314 to be larger than the size of the outlet 3142 of the flow guiding structure 314 may increase the strength of the airflow after flowing through the flow guiding structure 314, that is, the strength of the airflow flowing out from the outlet 3142 of the flow guiding structure 314 is larger than the strength of the airflow flowing in from the inlet 3141 of the flow guiding structure 314.

Further, the inlet 3141 of the flow directing structure 314 may have a larger size than the outlet 3142 of the flow directing structure 314 such that the area of the inlet 3141 of the flow directing structure 314 is larger than the area of the outlet 3142 of the flow directing structure 314.

In a specific implementation, the flow-directing structure 314 tapers in size from the inlet 3141 of the flow-directing structure 314 to the outlet 3142 of the flow-directing structure 314. In this way, the strength of the airflow can be increased by the flow guide structure 314, the attenuation degree of the airflow can be reduced as much as possible, and the flow direction of the airflow can be smoothly guided.

In some non-limiting embodiments, the roll brush chamber 311 may be formed in the housing 31. The brush chamber 311 may also include an outlet 3112 opposite the inlet 3111. The air inlet 3111 is used for sucking the air flow formed by the air on the surface of the object to be cleaned into the roller brush chamber 311 from the outside of the cleaning device 1, and the air outlet 3112 is used for allowing the air flow to flow out of the roller brush chamber 311 and enter other structures inside the cleaning device 1. Other structures may include the dust collection device 70 or the flow directing structure 314, etc.

In a specific implementation, the rolling brush chamber 311 is provided with an air inlet 3111, and a portion of the rolling brush 32 is exposed to the outside through the air inlet 3111, so that the rolling brush 32 can contact with the surface of the object to be cleaned when the cleaning device 1 cleans the object to be cleaned.

Further, the roller brush 32 may be provided with a dust-brushing portion 321 having a function of brushing or scraping off foreign substances on a surface of the object to be cleaned, such as bristles or protrusions, and the end points of the bristles or the end points of the protrusions may be exposed from the air inlet 3111, so that the end points of the dust-brushing portion 321, such as the bristles or the protrusions, may contact the object to be cleaned. When the drum brush 32 rotates, the tip of the dust brushing portion 321 such as bristles or protrusions may contact the object to be cleaned to scrape off foreign materials adhered to or hidden in the object to be cleaned.

In specific implementation, the air duct 40 is not directly communicated with the rolling brush chamber 311, but is indirectly communicated with the rolling brush chamber 311 through the dust collecting device 70, or indirectly communicated with the rolling brush chamber 311 through the flow guiding structure 314 and then communicated with the rolling brush chamber 311 through the dust collecting device 70. In this way, the airflow with the foreign matters can be prevented from directly entering the air duct 40 to contaminate the second motor 51 and the airflow generating device 10.

In a specific implementation, the rolling brush 32 can be driven by the second motor 51 to rotate or move relative to the housing 31.

In some embodiments, the cleaning apparatus 1 may further include a transmission mechanism 52, the second motor 51 is coupled to the transmission mechanism 52, and the transmission mechanism 52 is connected to the roller brush 32, so that the second motor 51 drives the roller brush 32 to rotate through the transmission mechanism 52. Specifically, the roller brush 32 includes two ends in the axial direction thereof, one end being the rotating shaft 323 and the other end being the fixed end 322. The fixed end 322 is rotatably connected to the roll brush chamber 311. The rotating shaft 323 is connected to the transmission mechanism 52, and under the rotation of the second motor 51, the transmission mechanism 52 drives the rotating shaft 323 to rotate, and at this time, the fixed end 322 also rotates synchronously, so as to drive the rolling brush 32 to rotate.

In other embodiments, the second motor 51 may be coupled with the transmission mechanism 52 to drive the roller brush 32 to reciprocate in the axial direction X. The rolling brush 32 is reciprocated in the axial direction X thereof to scrape the object to be cleaned back and forth, thereby scraping off foreign matters such as dust and hair on the surface of the object to be cleaned.

The specific structure of the transmission mechanism 52 differs depending on the actual state of motion of the roll brush 32 with respect to the housing 31, and the structure of the transmission mechanism 52 is configured depending on the actual state of motion of the roll brush 32.

When the cleaning device 1 cleans the object to be cleaned, the airflow generating device 10 starts to operate to generate a corresponding suction force, and a negative pressure is formed in a region where the cleaning device 1 contacts with the surface of the object to be cleaned, so that the air on the surface of the object to be cleaned is sucked through the air inlet 3111 of the rolling brush chamber 311 to form an airflow. The second motor 51 drives the rolling brush 32 to rotate or move relative to the housing 31, and when the rolling brush 32 rotates or moves, the second motor can beat the surface of the object to be cleaned or scrape the surface of the object to be cleaned, so as to discharge the foreign matters adhered or hidden in the object to be cleaned, and the foreign matters can be sucked away along with the air flow. Foreign substances such as dust and hair on the surface of the object to be cleaned can be sucked into the drum brush chamber 311 with the airflow. The air flow carrying the foreign substances enters the air duct 40 via the air outlet 3112 of the drum brush chamber 311 via the dust collecting device 70. The air flow firstly passes through the dust collecting device 70 and then enters the air duct 40, so that the cleanliness of the air entering the air duct 40 can be ensured, and the second motor 51 is prevented from being polluted.

In a specific implementation, the dust collecting device 70 is detachably connected to the housing 31 to facilitate cleaning of foreign substances in the dust collecting device 70.

In some embodiments, the dust collection device 70 can include a dust cup and a filter. The dust collecting cup is used for collecting foreign matters such as hair, dust and the like left in the dust collecting cup. The filter element can retain foreign matters such as hair, dust and the like in the air flow in the dust collection cup. The filter member may include a filter cotton or the like having a filtering function.

Specifically, the airflow exits the flow guide structure 314 and enters the dust collection device 70, through the dust collection device 70 and into the air chute 40. Specifically, the airflow exits the flow guide 314, enters the dirt cup, is filtered by the filter, and enters the air chute 40.

The dust collecting device 70 can be arranged on the cleaning device 1 in various ways, and can be configured according to actual requirements.

In a specific implementation, the housing 31 is provided with an air outlet 315, and the air outlet 315 is used for providing an outlet of the air flow which is discharged from the air duct 40 and flows through the air flow generating device 10, so as to discharge the air flow which is cooled down by the second motor 51 out of the cleaning apparatus 1.

In some non-limiting embodiments, the cleaning apparatus 1 further comprises: a battery 60, wherein the battery 60 is used for supplying power to the airflow generating device 10 and the second motor 51.

In particular implementations, the battery 60 may be a lithium battery or other rechargeable battery. Thus, after the battery 60 is fully charged, the cleaning apparatus 1 can be used without connecting the cleaning apparatus 1 to a power source through a wire, to further improve the convenience of the cleaning apparatus 1.

In a specific implementation, the housing 31 may include a grip portion 20, and the grip portion 20 may facilitate the taking of the cleaning device 1. The battery 60 may be located within the cavity of the grip portion 20.

In some non-limiting embodiments, the grip portion 20 includes a first portion 21 and a second portion 22 that are oppositely disposed, the battery 60 is located in a cavity of the first portion 21, and the airflow generating device 10 is located in a cavity of the second portion 22. By arranging the battery 60 and the airflow generating device 10 in the cavity of the grip portion 20 and by locating the airflow generating device 10 in the cavity of the second portion 22, the limited space in the grip portion 20 can be fully and effectively utilized, the compactness of the layout between the components in the cleaning apparatus 1 is further improved, and the volume of the cleaning apparatus 1 is reduced as much as possible.

The cavity of the first portion 21 is not in communication with the air duct 40. To avoid leakage of the air flow and ensure the strength of the air flow in the air duct 40.

In some embodiments, the first portion 21 may further be provided with a heat dissipation opening, and the heat dissipation opening may communicate the cavity of the first portion 21 with the external environment, so as to facilitate heat dissipation for the battery 60, ensure that the battery 60 operates in a better environmental temperature, improve the performance of the battery 60, and prolong the service life of the battery 60.

It should be noted that the number of the batteries 60 shown schematically in the figure is only a schematic illustration, and in practical applications, there may be other numbers, and the number of the batteries used may be configured according to the power of the airflow generating device 10 and the second motor 51, the actual requirement of the battery capacity, and the like, and is not limited herein.

In some embodiments, the second portion 22 may also have an air outlet 315 disposed thereon, the air outlet 315 being configured to exhaust air flowing from the air duct 40. Specifically, after passing through the second motor 51, the air flow in the air duct 40 passes through the air flow generating device 10 and is discharged through the air outlet 315.

In some embodiments, the air outlet 315 may be configured to be comprised of a plurality of apertures. The number and arrangement of the holes for the stroke air outlets 315 may be set according to factors such as the hole diameter. The plurality of holes may be arranged in an array, or the holes may be arranged according to the area size of the area in which the second portion is adapted to arrange the holes.

Further, the air outlet 315 may face the airflow generating device 10 to improve the smoothness of the airflow flowing out, so that the airflow can be quickly discharged from the cleaning apparatus 1.

It should be noted that, in order to facilitate the installation and the detachment of the cleaning apparatus 1, and the replacement and the maintenance of the internal components, the housing 31 may be generally configured to include two parts, namely a first housing and a second housing, wherein the first housing and the second housing may both have corresponding accommodating cavities, so that a part of the components such as the air duct 40 and the flow guiding structure 314 in the above embodiment is disposed on the first housing, and another part is disposed on the second housing. The first housing 31 and the second housing 31 are fastened to form the complete air duct 40 and the flow guiding structure 314.

It will be appreciated that the housing 31 may also be configured as a box and a cover. The air duct 40 and the flow guiding structure 314 may be disposed on the box. The sealing of the air duct 40 and the flow guiding structure 314 is realized by the matching of the cover plate and the box body. The air duct 40 and the flow guiding structure 314 formed on the box body are already complete structures, and the cover plate is only used for keeping some parts of the cleaning device 1 in a sealed space.

It should be noted that, in the cleaning apparatus 1 schematically illustrated in fig. 1 to 3, the axial direction of the rolling brush 32 is consistent with the length direction of the cleaning apparatus 1, and by adopting the layout, the overall size of the cleaning apparatus 1 can be relatively uniform, and under the condition that the appearance of the cleaning apparatus 1 is better maintained, the size of the cleaning apparatus 1 in the width direction Y can be reduced, so that the volume of the cleaning apparatus 1 is smaller, and the convenience of the cleaning apparatus 1 can be improved.

It is understood that the axial direction of the roll brush 32 may coincide with the width direction Y of the cleaning apparatus 1 in the case where the dimensional size requirement of the cleaning apparatus 1 is not so severe.

It should be noted that the cleaning device 1 may also include other components, such as a controller for controlling the cleaning device 1, which is not illustrated herein.

The cleaning device 1 in the embodiment of the present invention may include a vacuum cleaner, a mite removing apparatus, or other devices having a cleaning function, which is not illustrated herein.

While specific embodiments have been described above, these embodiments are not intended to limit the scope of the present disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless differently stated. In particular implementations, the features of one or more dependent claims may be combined with those of the independent claims as technically feasible according to the actual requirements, and the features from the respective independent claims may be combined in any appropriate manner and not merely by the specific combinations enumerated in the claims.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims (17)

1. A cleaning device, comprising: dust collection device (70) and air current produce device (10), characterized by still includes: a second motor (51) and an air duct (40), wherein:

the air flow generating device (10) is used for driving air to flow so as to generate air flow;

the dust collecting device (70) is used for collecting foreign matters in the air flow;

the inlet (41) of the air duct (40) is communicated with the dust collecting device (70), the outlet (42) of the air duct (40) faces the airflow generating device (10), and the air duct (40) is used for guiding the flow direction of the airflow;

the second motor (51) is arranged in the air duct (40), and the second motor (51) is used for driving the rolling brush (32) to rotate.

2. A cleaning device as claimed in claim 1, characterized in that the cleaning device (1) comprises a housing (31), a number of partitions (312) being arranged along an inner wall of the housing (31), the number of partitions (312) forming the air duct (40) with a part of the inner wall of the housing (31).

3. The cleaning apparatus according to claim 2, wherein when the partition (312) includes a bent portion (313), a surface of the bent portion (313) facing the inside of the air duct (40) is a curved surface.

4. A cleaning appliance as claimed in claim 3, wherein the angle of the arc is greater than 90 °.

5. A cleaning device according to claim 2, characterized in that part of the air flow generating means (10) passes through the outlet (42) of the air duct (40) and protrudes into the air duct (40).

6. A cleaning device as claimed in any one of claims 2 to 5, characterized in that the cleaning device (1) further comprises a roller brush chamber (311) and a flow-directing structure (314), wherein,

the rolling brush chamber (311) is used for placing the rolling brush (32);

the flow guide structure (314) is used for guiding the airflow flowing out from the outlet of the rolling brush chamber (311) to enter the dust collecting device (70).

7. A cleaning device according to claim 6, characterized in that the inlet (3141) of the flow directing structure (314) communicates with the roller brush chamber (311), the outlet (3142) of the flow directing structure (314) communicates with the inlet of the dust collecting means (70), and the inlet (3141) of the flow directing structure (314) has a larger size than the outlet (3142) of the flow directing structure (314).

8. A cleaning device as claimed in claim 7, characterized in that the flow-directing structure (314) tapers in size from an inlet (3141) of the flow-directing structure (314) to an outlet (3142) of the flow-directing structure (314).

9. The cleaning apparatus according to claim 6, wherein the brush chamber (311) is provided with an intake opening (3111), and a portion of the brush (32) is exposed to the outside through the intake opening (3111).

10. Cleaning device according to claim 2, characterized in that the dust collecting means (70) is detachably connected to the housing (31).

11. A cleaning device according to claim 10, characterized in that the dust collecting means (70) comprises a dust cup and a filter element for keeping foreign bodies in the air flow in the dust cup.

12. The cleaning apparatus according to claim 2, wherein an air outlet (315) is provided on the housing (31), the air outlet (315) being used for providing an outlet for the air flow which is discharged from the air duct (40) and flows through the air flow generating device (10).

13. The cleaning apparatus defined in claim 2, further comprising: a battery (60), the battery (60) being used to power the airflow generating device (10) and the second motor (51).

14. A cleaning device as claimed in claim 13, characterized in that the housing (31) comprises a grip portion (20), the battery (60) being located in a cavity of the grip portion (20).

15. A cleaning device according to claim 14, wherein the grip portion (20) comprises a first portion (21) and a second portion (22) arranged opposite to each other, the battery (60) being located in a cavity of the first portion (21), and the air flow generating means (10) being located in a cavity of the second portion (22).

16. A cleaning device according to claim 15, characterized in that the cavity of the first part (21) is not in communication with the air duct (40).

17. The cleaning apparatus according to claim 1, wherein the airflow generating device (10) comprises a first motor and a fan, the first motor being coupled to the fan, the first motor driving the fan to rotate.

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