Cleaning device

Abstract

The utility model relates to cleaning equipment. The cleaning equipment comprises a first fan, a second fan and a wind scooper. The wind scooper is provided with a first air duct, a second air duct and an air outlet. The first air duct and the second air duct converge at the upstream of the air outlet, so that airflow generated by the first fan and guided by the first air duct and airflow generated by the second fan and guided by the second air duct are discharged through the air outlet. Due to the existence of the wind scooper, no matter whether the first fan and the second fan operate separately or simultaneously, airflow generated by the first fan and the second fan can be converged to the same air outlet under the guidance of respective air ducts and is exhausted from the air outlet. The air flow exhausted from the air outlet helps the cleaning equipment to realize the blowing function, so that the cleaning equipment not only can work in a suction mode, but also can work in a blowing mode. Therefore, the cleaning equipment disclosed by the utility model has more abundant functions.

Description

Technical Field

[0001] The present disclosure relates to the technical field of suction cleaning, and in particular, to a cleaning device. Background Art

[0002] The use of cleaning equipment not only reduces the labor cost of cleaning work, but also improves the efficiency of cleaning work. Some cleaning equipment includes a fan, and the fan generates negative pressure to achieve the purpose of cleaning. A vacuum cleaner belongs to this type of cleaning equipment, which picks up dust by sucking air, thereby achieving the purpose of cleaning.

[0003] In order to cope with some usage requirements, a cleaning device including two fans has emerged. For example, one fan can be driven by an AC motor, and the other fan can be driven by a DC motor, so that the cleaning device can operate under both DC power supply and AC power supply.

[0004] However, in the related art, these cleaning devices with dual fans can only operate by suction, and their functions are relatively simple. Utility Model Content

[0005] In view of this, the present disclosure improves the cleaning equipment with dual fans, aiming to enrich the functions of this type of cleaning equipment and solve the problem that the functions of this type of cleaning equipment are relatively single.

[0006] The cleaning device provided by the present disclosure includes a first fan, a second fan and an air guide cover. The air guide cover is provided with a first air duct, a second air duct and an air outlet. The first air duct and the second air duct merge upstream of the air outlet, so that the airflow generated by the first fan and guided by the first air duct and the airflow generated by the second fan and guided by the second air duct are both discharged through the air outlet.

[0007] Due to the presence of the air guide cover, no matter the first fan and the second fan are operated separately or simultaneously, the airflows generated by them will be guided by their respective air ducts, converge to the same air outlet, and be discharged at the air outlet. The airflow discharged from the air outlet will help the cleaning device to achieve the blowing function, so that the cleaning device can operate not only by suction, but also by blowing. Accordingly, the cleaning device according to the present disclosure will have richer functions.

[0008] Additionally or alternatively, the first fan and the second fan include a first impeller and a second impeller, respectively, and the air guide cover includes a first air guide portion, a second air guide portion, and an air outlet pipe. The first air guide portion at least partially defines a first air chamber for accommodating the first impeller, and the second air guide portion at least partially defines a second air chamber for accommodating the second impeller. The first air duct, the second air duct, and the air outlet are defined by the first air guide portion, the second air guide portion, and the air outlet pipe, respectively.

[0009] When a fan is running, its impeller rotates to generate negative pressure in the corresponding air chamber, thereby forming an airflow. The airflow flows from the air chamber to the air outlet pipe through the corresponding air duct. Under the guidance of the air outlet pipe, the airflow will be better concentrated, helping to achieve directional blowing. Each air guide portion at least partially defines the air chamber and defines the air duct, which helps to reduce the number of components and allows the airflow to flow directly from the air chamber to the air duct.

[0010] In addition or alternatively, the axes of the first fan and the second fan are substantially parallel and spaced from each other. When viewed from above, the axis of the first fan intersects the reference straight line, or the first fan and the air outlet duct are located on the same side of the reference straight line. Here, the reference straight line intersects the axis of the second fan and is substantially parallel to the air outlet duct.

[0011] This structure can help the first air duct and the second air duct to obtain a relatively short length, thereby helping to reduce the flow resistance when the air flows through them, ensuring a better air outlet efficiency.

[0012] Additionally or alternatively, in a plan view, the axis of the first fan and the air outlet pipe are located on the same side of the reference line, and the axis of the first fan and the axis of the second fan are located on opposite sides of the air outlet pipe in a lateral direction.

[0013] This structure can further help the first air duct and the second air duct to obtain a relatively short length, thereby helping to reduce the flow resistance when the air flows through them, ensuring a better air outlet efficiency.

[0014] Additionally or alternatively, the first fan is driven by a DC motor and the second fan is driven by an AC motor. In a top view, the axis of the first fan intersects the reference straight line, and the axis of the first fan is closer to the outlet end of the air outlet duct than the axis of the second fan.

[0015] The second fan is driven by an AC motor and thus usually has a larger size. Correspondingly, the first fan is driven by a DC motor and thus usually has a smaller size. On this basis, the axis of the first fan is arranged to intersect with the reference straight line and be closer to the outlet end of the air outlet duct than the axis of the second motor. The first air duct is closer to the flow channel inside the air outlet duct, while the second air duct only needs to bypass the first fan with a smaller size. Therefore, both air ducts do not need to be extended for a long time to connect with the flow channel inside the air outlet duct. Therefore, this structure can further help the first air duct and the second air duct to obtain a relatively short length, thereby helping to reduce the flow resistance when the airflow passes through them, ensuring a better air outlet efficiency.

[0016] Additionally or alternatively, the first fan and the second fan include a first motor and a second motor respectively, and the first air guide portion is provided with a first exposure opening exposing the top end of the first motor, and / or the second air guide portion is provided with a second exposure opening exposing the top end of the second motor.

[0017] Through the first exposure opening, the top of the first motor will be exposed outside the first air guide portion, which helps to improve the heat dissipation efficiency of the first motor itself. Similarly, through the second exposure opening, the top of the second motor will be exposed outside the second air guide portion, which helps to improve the heat dissipation efficiency of the second motor itself.

[0018] In addition or alternatively, the second air guide portion at least partially defines a storage chamber separated from the second air chamber, and the second motor is at least partially stored in the storage chamber. The outer wall of the storage chamber is provided with a first heat dissipation port. The heat dissipation fan of the second motor generates a heat dissipation airflow from the second exposure port to the first heat dissipation port.

[0019] When the second motor is running, the heat dissipation airflow generated by its heat dissipation fan will enter the accommodation chamber from the second exposure port, flow through the accommodation chamber and flow out from the first heat dissipation port. This process will effectively remove the heat generated by the second motor, thereby improving the heat dissipation effect of the second motor. In particular, when the second motor is an AC motor, it generates more heat, so a better heat dissipation effect is required.

[0020] Additionally or alternatively, the cleaning device further comprises a shell, the air guide cover is at least partially accommodated in the shell, the shell is provided with a second heat dissipation port, and the heat dissipation airflow from the first heat dissipation port is discharged through the second heat dissipation port.

[0021] When the second motor is running, the heat dissipation airflow generated by its heat dissipation fan will be able to smoothly flow out of the shell through the second heat dissipation port after leaving the accommodating chamber, which helps to further improve the heat dissipation effect of the second motor.

[0022] Additionally or alternatively, the air guide cover further includes a pair of partition portions, which are spaced apart from each other in the circumferential direction and protrude radially outward beyond the outer wall of the second air guide portion, and the first heat dissipation port is located between the pair of partition portions.

[0023] Under the guidance of a pair of baffles, the heat dissipation airflow leaving the first heat dissipation port will flow more and more directly to the second heat dissipation port and then be discharged outside the shell, which is conducive to reducing flow resistance and thus improving heat dissipation efficiency.

[0024] Additionally or alternatively, the air guide cover further includes a reinforcing rib, which is located between the pair of partition portions in the circumferential direction and divides the first heat dissipation opening.

[0025] In order to improve the heat dissipation efficiency, the first heat dissipation opening is larger in size. A larger opening will weaken the structural strength of the air guide cover. The reinforcing ribs with this structure are helpful to improve the structural strength of the air guide cover.

[0026] Additionally or alternatively, the first fan and the second fan include a first motor and a second motor respectively, the first motor is a DC motor, and the second motor is an AC motor.

[0027] In addition or alternatively, the cleaning device includes a dust collection bucket and a head assembly, the head assembly closes the top opening of the dust collection bucket, the dust collection bucket is provided with a suction port, and the head assembly includes a first fan, a second fan and an air guide cover. When the first fan and / or the second fan are running, air flows in from the suction port and is discharged from the air outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments are briefly introduced below.

[0029] It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and should not be viewed as limiting the scope.

[0030] It should also be understood that the same or similar reference numerals are used in the drawings to represent the same or similar elements.

[0031] It should also be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0032] Figure 1 It is a schematic structural diagram of a cleaning device according to an embodiment of the present disclosure.

[0033] Figure 2 yes Figure 1 Schematic diagram of the exploded view of the main part of the cleaning device.

[0034] Figure 3 yes Figure 1 A schematic cross-sectional view of the main part of the cleaning device in FIG.

[0035] Figure 4 yes Figure 2 Schematic diagram of the structure of the air guide cover.

[0036] Figure 5 Shows Figure 2 The relative position relationship among the first fan, the second fan and the air outlet pipe of the air guide cover.

[0037] Figure 6 The relative position relationship among the first fan, the second fan and the air outlet duct of the air guide cover according to a modified example of the present disclosure is shown.

[0038] Figure 7 The relative position relationship among the first fan, the second fan and the air outlet duct of the air guide cover according to another variation of the present disclosure is shown. DETAILED DESCRIPTION

[0039] The following is an exemplary description of the embodiments of the present disclosure in conjunction with the accompanying drawings. It should be understood that the present disclosure can be implemented in a variety of ways and should not be construed as being limited to the embodiments described here. The embodiments described here are only for a more thorough and clear understanding of the present disclosure.

[0040] The present disclosure provides a cleaning device 100. The present disclosure does not particularly limit the type of the cleaning device 100. For example, the cleaning device 100 can perform cleaning operations by suction. As an example, the cleaning device 100 can pick up dust by sucking air to achieve the purpose of cleaning, that is, the cleaning device 100 can be a vacuum cleaner. As another example, the cleaning device 100 can achieve the purpose of cleaning by applying a cleaning fluid to an object to be cleaned and sucking dirty fluid from the object to be cleaned, for example, it can be a floor scrubber or a carpet scrubber.

[0041] For ease of understanding, the cleaning device 100 is taken as an example of a specific type of vacuum cleaner, and the overall structure of the cleaning device 100 is first illustrated. It should be understood that the cleaning device 100 is not limited to this type of vacuum cleaner, or even to vacuum cleaners. Of course, the structure of the cleaning device 100 is not limited to the following description. For example, one or several elements introduced below can be omitted or replaced, and the layout relationship between them can be replaced.

[0042] refer to Figure 1 The cleaning device 100 may include a head assembly 10 , a dust collecting bucket 20 and a suction pipe 30 .

[0043] Combination Figure 2 The dust collecting bucket 20 may be provided with a dust containing space 21 with an open top, and the top of the dust containing space 21 is open to form a top opening 22. The dust collecting bucket 20 may also be provided with a suction port 23, and the suction port 23 is in fluid communication with the dust containing space 21. For example, the suction port 23 may be provided on one side of the dust collecting bucket 20. When the cleaning device 100 is running, the airflow mixed with dust enters the dust containing space 21 through the suction port 23, and the dust remains in the dust containing space 21.

[0044] The head assembly 10 can be installed on the top of the dust collecting bucket 20 to close the top opening 22 of the dust collecting bucket 20. The head assembly 10 may include a housing 11, a first fan 12, a second fan 13 and a filter 14. The first fan 12 and the second fan 13 may be accommodated in the housing 11. The filter 14 may be installed below the housing 11 to at least partially extend into the dust holding space 21. As an example, the housing 11 may include an upper cover 111 and a lower cover 112 assembled together. When the first fan 12 and / or the second fan 13 are in operation, the airflow mixed with dust will first enter the dust holding space 21, and then enter the head assembly 10 through the filter 14, thereby leaving the dust in the dust holding space 21 and discharging the filtered air.

[0045] The suction pipe 30 may have an elongated structure. One end of the suction pipe 30 may be connected to the suction port 23 of the dust bucket 20 to communicate with the dust holding space 21 in the dust bucket 20. A cleaning tool 31 may be provided at the other end of the suction pipe 30. The cleaning tool 31 may be integrally formed with the suction pipe 30, or may be assembled with the suction pipe 30. In an example in which the cleaning device 100 is a vacuum cleaner, the cleaning tool 31 may be a nozzle that allows air mixed with dust to be sucked in. Of course, in other examples, the cleaning tool 31 may also have other structures and functions, for example, it may be used to apply a cleaning fluid to an object to be cleaned and to suck dirty fluid from the object to be cleaned.

[0046] In order to solve the problem that the cleaning equipment with dual fans provided in the related field has relatively single functions, reference Figure 2 According to the cleaning device 100 provided by the present disclosure, the head assembly 10 may further include an air guide hood 15. The air guide hood 15 may be at least partially accommodated in the housing 11. Figure 3 and Figure 4 The air guide cover 15 may be provided with a first air duct 151a, a second air duct 152a and an air outlet 153a. The first air duct 151a and the second air duct 152a may merge upstream of the air outlet 153a, so that the airflow generated by the first fan 12 and guided by the first air duct 151a and the airflow generated by the second fan 13 and guided by the second air duct 152a are both discharged through the air outlet 153a.

[0047] Due to the presence of the air guide hood 15, no matter the first fan 12 and the second fan 13 are operated separately or simultaneously, the airflows generated by them will be guided by their respective air ducts (the first air duct 151a or the second air duct 152a), converge to the air outlet 153a, and be discharged at the air outlet 153a. The airflow discharged from the air outlet 153a will help the cleaning device 100 to achieve the blowing function, so that the cleaning device 100 can operate not only by suction, but also by blowing. Accordingly, the cleaning device 100 according to the present disclosure will have richer functions.

[0048] Continue to refer Figures 2 to 4 , the first fan 12 may include a first impeller 121, the second fan 13 may include a second impeller 131, and the air guide cover 15 may include a first air guide portion 151, a second air guide portion 152, and an air outlet duct 153. The first air guide portion 151 may at least partially define a first air chamber 16 for accommodating the first impeller 121, and the second air guide portion 152 may at least partially define a second air chamber 17 for accommodating the second impeller 131. The first air duct 151a may be defined by the first air guide portion 151, the second air duct 152a may be defined by the second air guide portion 152, and the air outlet 153a may be defined by the air outlet duct 153.

[0049] When the first fan 12 is running, the first impeller 121 rotates to generate negative pressure in the first air chamber 16, thereby forming an airflow. The airflow flows from the first air chamber 16 to the air outlet pipe 153 through the first air duct 151a. The first air guide 151 at least partially defines the first air chamber 16 and defines the first air duct 151a, and the second air guide 152 at least partially defines the second air chamber 17 and defines the second air duct 152a, which helps to reduce the number of components and allows the airflow to flow directly from the first air chamber 16 and the second air chamber 17 to the first air duct 151a and the second air duct 152a respectively. Under the guidance of the air outlet pipe 153, the airflow will be better concentrated to help achieve directional blowing.

[0050] refer to Figure 2 and Figure 3 As an implementation method, the air guide cover 15 can be installed on the lower cover 112, so that the first air guide portion 151 cooperates with the lower cover 112 to form the first air chamber 16, and the second air guide portion 151 cooperates with the lower cover 112 to form the second air chamber 17. The filter 14 can be installed on the lower cover 112, so that the airflow passing through the filter 14 can flow into the first air chamber 6 and the second air chamber 17.

[0051] The air outlet pipe 153 may at least partially extend out of the housing 11. In some examples, when in use, the air outlet pipe 153 may directly provide a blowing function. In other examples, such as Figure 1 As shown, the cleaning device 100 may further include an external pipe 40, which may be connected to the air outlet pipe 153. When in use, the external pipe 40 may directly provide a blowing function. In the example with the external pipe 40, the air outlet pipe 153 does not necessarily extend out of the housing 11.

[0052] In order to drive the first impeller 121 and the second impeller 131 to rotate, the first fan 12 may further include a first motor 122 that is transmission-connected to the first impeller 121, and the second fan 13 may further include a second motor 132 that is transmission-connected to the second impeller 131. As an example, the first motor 122 may be a DC motor, and the second motor 132 may be an AC motor, so that the cleaning device 100 can operate under both DC power supply and AC power supply. Of course, in other examples, the first motor 122 may be an AC motor, and the second motor 132 may be a DC motor, or the first motor 122 and the second motor 132 may be the same type of motors.

[0053] Further, refer to Figure 2 When the first motor 112 is a DC motor and the second motor 132 is an AC motor, the head assembly 10 may further include a battery 16 disposed in the shell 11. The battery 16 may be fixed to the lower cover 112 and electrically connected to the first motor 122 to power the first motor 112.

[0054] Furthermore, when the second motor 132 is operated by the external AC power supply, the external AC power supply can charge the battery 16 at the same time.

[0055] Continue to refer Figure 2 and Figure 3 The first fan 12 may have an axis A1, and the second fan 13 may have an axis A2. The axis A1 and the axis A2 may be substantially parallel and spaced apart from each other. Figure 4 and Figure 5 , introduce a reference straight line RL, define the reference straight line RL intersecting with the axis A2 of the second fan 13 and being substantially parallel to the air outlet pipe 153 (for example, the error may be ±5°). Figure 5 As shown, in a top view, that is, in an orthographic projection in which the projection line is parallel to the axes A1 and A2, the axis A1 of the first fan 12 and the air outlet duct 153 may be located on the same side of the reference straight line RL (i.e. Figure 5 Alternatively, as Figure 6 and Figure 7 As shown, in a plan view, the axis A1 of the first fan 12 may intersect the reference straight line RL.

[0056] If the axis A1 of the first fan 12 is located on the side of the reference straight line RL away from the air outlet pipe 153, the first air duct 151a needs to go through a longer path to bypass the second air guide 152 before it can extend to connect with the flow channel inside the air outlet pipe 153, which will increase the length of the first air duct 151a, thereby increasing the flow resistance of the airflow passing through the first air duct 151a, thereby reducing the air outlet efficiency. In contrast, in the above example of the present disclosure, the axis A1 and the air outlet pipe 153 are located on the same side of the reference straight line RL, or the axis A1 intersects the reference straight line RL. This structure can help the first air duct 151a and the second air duct 152a obtain a relatively short length, thereby helping to reduce the flow resistance of the airflow passing through them, ensuring a better air outlet efficiency.

[0057] In a specific example, refer to Figure 4 and Figure 5 In a top view, the axis A1 of the first fan 12 and the air outlet pipe 153 are located on the same side of the reference straight line RL, and the axis A1 of the first fan 12 and the axis A2 of the second fan 13 are located on opposite sides of the air outlet pipe 153 in the horizontal direction. This structure can further help the first air duct 151a and the second air duct 152a to obtain a relatively short length, thereby helping to reduce the flow resistance when the airflow passes through them, ensuring a better air outlet efficiency.

[0058] It is understandable that the axis A1 and the axis A2 may be located on opposite sides of the entire air outlet pipe 153 in the horizontal direction, or may be located on opposite sides of the central axis L of the air outlet pipe 153 in the horizontal direction, and the present disclosure is intended to cover both situations.

[0059] In another specific example, the first motor 122 is a DC motor and the second motor 132 is an AC motor. Figure 7 , the axis A1 of the first fan 12 intersects the reference straight line RL, and the axis A1 is closer to the outlet end of the air outlet pipe 153 than the axis A2 (i.e. Figure 7 ). The second fan 13 is driven by an AC motor and thus usually has a larger size. Correspondingly, the first fan 12 is driven by a DC motor and thus usually has a smaller size. On this basis, the axis A1 of the first fan 12 is arranged to intersect with the reference straight line RL and be closer to the outlet end of the air outlet pipe 153 than the axis A2 of the second fan 13. The first air duct 151a is closer to the flow channel inside the air outlet pipe 153, while the second air duct 152a only needs to bypass the first fan 12 with a smaller size. Therefore, both air ducts do not need to be extended for a long time to connect with the flow channel inside the air outlet pipe 153. Therefore, this structure can further help the first air duct 151a and the second air duct 152a to obtain a relatively short length, thereby helping to reduce the flow resistance when the airflow passes through them, ensuring a better air outlet efficiency.

[0060] refer to Figures 2 to 4 , the first air guide portion 151 may be provided with a first exposure port 1511, and the top of the first motor 122 may be exposed to the outside of the air guide cover 15 through the first exposure port 1511. Similarly, the second air guide portion 152 may be provided with a second exposure port 1521, and the top of the second motor 132 may be exposed to the outside of the air guide cover 15 through the second exposure port 1521. It can be understood that the top of a motor is exposed outside the air guide cover 15, which may mean that the top of the motor extends outside the air guide cover 15 through the corresponding exposure port, or does not extend outside the air guide cover 15.

[0061] Through the first exposure opening 1511, the top of the first motor 122 will be exposed outside the first air guide 151, which helps to improve the heat dissipation efficiency of the first motor 122. Similarly, through the second exposure opening 1521, the top of the second motor 132 will be exposed outside the second air guide 152, which helps to improve the heat dissipation efficiency of the second motor 132.

[0062] Considering that AC motors usually generate more heat, in the example where the second motor 132 is an AC motor, continue to refer to Figures 2 to 4The second air guide 152 may at least partially define a storage chamber 18 separated from the second air chamber 17, the second motor 132 may be at least partially stored in the storage chamber 18, the outer wall of the storage chamber 18 (i.e., the second air guide 152) may be provided with a first heat dissipation port 1522, and the heat dissipation fan 1321 of the second motor 132 may generate a heat dissipation airflow 1522 from the second exposure port 1521 to the first heat dissipation port. Of course, the second motor 132 being a DC motor should not be excluded.

[0063] When the second motor 132 is running, the heat dissipation airflow generated by the heat dissipation fan 1321 thereof will enter the accommodation chamber 18 from the second exposure port 1521, flow through the accommodation chamber 18 and flow out from the first heat dissipation port 1522. This process will effectively take away the heat generated by the second motor 132, thereby improving the heat dissipation effect of the second motor 132. In particular, when the second motor 132 is an AC motor, it generates more heat, thus requiring a better heat dissipation effect.

[0064] Further, refer to Figures 1 to 3 The housing 11 may be provided with a second heat dissipation port 113, and the heat dissipation airflow from the first heat dissipation port 1522 may be discharged from the housing 11 through the second heat dissipation port 113. Thus, when the second motor 132 is running, the heat dissipation airflow generated by the heat dissipation fan 1321 thereof will smoothly flow out of the housing 11 through the second heat dissipation port 113 after leaving the accommodation chamber 18, which helps to further improve the heat dissipation effect of the second motor 132.

[0065] Further, refer to Figure 4 The air guide cover 15 may further include a pair of baffles 154, which may be spaced apart from each other in the circumferential direction and protrude radially outwardly beyond the outer wall of the second air guide portion 152, and the first heat dissipation port 1522 is located between the pair of baffles 154. In this way, under the guidance of the pair of baffles 154, the heat dissipation airflow leaving the first heat dissipation port 1522 will flow more and more directly to the second heat dissipation port 113, and then be discharged outside the housing 11, which is conducive to reducing the flow resistance, thereby improving the heat dissipation efficiency.

[0066] In order to improve the heat dissipation efficiency, the first heat dissipation opening 1522 needs to have a larger size, and a larger opening will weaken the structural strength of the air guide cover 15. Figure 4 The air guide cover 15 may further include a reinforcing rib 155. The reinforcing rib 155 may be located between the pair of partition plates 154 in the circumferential direction and divide the first heat dissipation opening 1522. The reinforcing rib 155 having such a structure helps to improve the structural strength of the air guide cover 15.

[0067] It should be noted that, in the present disclosure, the axis A1 of the first fan 12 may refer to the rotation axis of the first impeller 121, and the axis A2 of the second fan 13 may refer to the rotation axis of the second impeller 131. When describing a pair of baffles 154 and reinforcing ribs 155, the circumferential direction may refer to the direction around the axis A2, and the radial direction may refer to the direction located on a plane perpendicular to the axis A2 and intersecting the axis A2.

[0068] It should be understood that the term "including" and its variations used in the present disclosure are open inclusions, i.e., "including but not limited to". The term "according to" means "at least in part according to". The term "one embodiment" means "a pair of embodiments"; the term "another embodiment" means "a pair of other embodiments".

[0069] It should be understood that although the terms "first" or "second" etc. may be used in the present disclosure to describe various elements, for example, a first fan and a second fan, these elements are not defined by these terms, which are only used to distinguish one element from another.

[0070] The protection scope of the present disclosure is not limited to the above-mentioned embodiments. Any changes or substitutions that can be conceived by any person skilled in the art within the technical scope disclosed in the present disclosure should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A cleaning device, comprising a first fan and a second fan, characterized in that: The cleaning equipment also includes an air guide hood, which is provided with a first air duct, a second air duct and an air outlet, wherein the first air duct and the second air duct merge upstream of the air outlet, so that the airflow generated by the first fan and guided by the first air duct and the airflow generated by the second fan and guided by the second air duct are both discharged through the air outlet.

2. The cleaning device according to claim 1, characterized in that: The first fan and the second fan include a first impeller and a second impeller, respectively, the air guide cover includes a first air guide portion, a second air guide portion and an air outlet duct, the first air guide portion at least partially defines a first air chamber for accommodating the first impeller, the second air guide portion at least partially defines a second air chamber for accommodating the second impeller, the first air duct, the second air duct and the air outlet are respectively defined by the first air guide portion, the second air guide portion and the air outlet duct.

3. The cleaning device according to claim 2, characterized in that: The axes of the first fan and the second fan are roughly parallel and spaced from each other; when viewed from above, the axis of the first fan intersects with a reference straight line, or the first fan and the air outlet duct are located on the same side of the reference straight line; the reference straight line intersects with the axis of the second fan and is roughly parallel to the air outlet duct.

4. The cleaning device according to claim 3, characterized in that: In a plan view, the axis of the first fan and the air outlet pipe are located on the same side of the reference straight line, and the axis of the first fan and the axis of the second fan are respectively located on opposite sides of the air outlet pipe in the transverse direction.

5. The cleaning device according to claim 3, characterized in that: The first fan is driven by a DC motor, and the second fan is driven by an AC motor; when viewed from above, the axis of the first fan intersects the reference straight line, and the axis of the first fan is closer to the outlet end of the air outlet duct than the axis of the second fan.

6. The cleaning device according to claim 2 or 3, characterized in that: The first fan and the second fan include a first motor and a second motor respectively, the first air guide portion is provided with a first exposure opening exposing the top end of the first motor, and / or the second air guide portion is provided with a second exposure opening exposing the top end of the second motor.

7. The cleaning device according to claim 6, characterized in that: The second air guiding portion at least partially defines a accommodating chamber separated from the second air chamber, the second motor is at least partially accommodated in the accommodating chamber, an outer wall of the accommodating chamber is provided with a first heat dissipation port, and a heat dissipation fan of the second motor generates a heat dissipation airflow from the second exposure port to the first heat dissipation port.

8. The cleaning device according to claim 7, characterized in that: It also includes a shell, the air guide cover is at least partially accommodated in the shell, the shell is provided with a second heat dissipation port, and the heat dissipation airflow from the first heat dissipation port is discharged through the second heat dissipation port; The air guide cover further includes a pair of baffle portions, the pair of baffle portions are spaced apart from each other in the circumferential direction and protrude outwardly in the radial direction beyond the outer wall of the second air guide portion, and the first heat dissipation port is located between the pair of baffle portions; The air guide cover further includes a reinforcement rib, which is located between the pair of partition plates in the circumferential direction and divides the first heat dissipation port.

9. The cleaning device according to any one of claims 1 to 3, characterized in that: The first fan and the second fan include a first motor and a second motor respectively, the first motor is a DC motor, and the second motor is an AC motor.

10. The cleaning device according to any one of claims 1 to 3, characterized in that: It includes a dust bucket and a head assembly, wherein the head assembly closes the top opening of the dust bucket, the dust bucket is provided with a suction port, and the head assembly includes the first fan, the second fan and the air guide cover, wherein when the first fan and / or the second fan are running, the air flow enters from the suction port and is discharged from the air outlet.

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