Cleaning device

Abstract

The present disclosure provides a cleaning apparatus. According to the cleaning equipment provided by the invention, when the fan runs, after airflow generated by the fan flows through the filter on the downstream side of the fan, part of the airflow is introduced into the first accommodating cavity where the winder is located, so that the flow rate of gas around the winder and the conductive cable is increased, and heat around the winder and the conductive cable is taken away; and therefore, the heat dissipation effect of the winder and the conductive cable is improved. Due to the fact that the part of airflow firstly passes through the filter on the downstream side of the draught fan and then enters the first containing cavity, the part of airflow is high in cleanliness degree, the winder and the conductive cable cannot be polluted or less polluted, and for example, dust cannot be deposited on the winder and the conductive cable or less dust is caused to be deposited on the winder and the conductive cable. Besides, the airflow taking away the heat of the winder and the conductive cable comes from the airflow generated when the fan executes cleaning operation instead of the airflow generated by an additionally-arranged heat dissipation device, and therefore the manufacturing cost and energy consumption of the cleaning equipment can be reduced.

Description

Technical Field

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

[0002] With the continuous improvement of living standards, people have higher and higher requirements for living and working environments. In order to ensure that the environment has a good cleanliness, cleaning equipment for cleaning various places and various objects has emerged. The use of cleaning equipment not only reduces the labor cost of cleaning work, but also improves the efficiency of cleaning work, which makes cleaning equipment widely used.

[0003] Some cleaning equipment is equipped with a conductive cable, and obtains power supply by connecting the conductive cable to a power source. In order to store the conductive cable, some cleaning equipment is provided with a cable winder. The conductive cable can be neatly and orderly wound on the cable winder to avoid the conductive cable from being entangled and tangled, and facilitate the use and storage of the conductive cable.

[0004] However, when the cleaning device is in use, the heat generated by the motor and the conductive cable will gather around the winder, causing the temperature of the winder and the conductive cable to rise, thus affecting their service life. Summary of the invention

[0005] In view of this, the present disclosure provides a cleaning device, aiming to improve the heating problem of the cable winder and the conductive cable.

[0006] The cleaning device provided by the present disclosure includes a housing, a fan, a filter, a cable winder and a conductive cable. A first receiving chamber for receiving the cable winder is provided in the housing, and the conductive cable is at least partially wound on the cable winder. The cleaning device has an air inlet and an air outlet, and the fan is used to form an air flow path from the air inlet to the air outlet. The filter is on the air flow path and is located on the downstream side of the fan. The airflow after passing through the filter is at least partially introduced into the first receiving chamber.

[0007] According to the cleaning equipment provided by the present disclosure, when the fan is running, a part of the airflow generated by the fan will be introduced into the first receiving chamber where the cable winder is located after passing through the filter on the downstream side of the fan, so that the gas flow rate around the cable winder and the conductive cable is increased, and the heat around the cable winder and the conductive cable is taken away, thereby improving the heat dissipation effect of the cable winder and the conductive cable. Since this part of the airflow first passes through the filter on the downstream side of the fan and then enters the first receiving chamber, this part of the airflow has a higher degree of cleanliness and will not or less pollute the cable winder and the conductive cable. For example, it will not or less cause dust to be deposited on the cable winder and the conductive cable. In addition, according to the cleaning equipment provided by the present disclosure, the airflow that takes away the heat of the cable winder and the conductive cable comes from the airflow generated by the fan when performing the cleaning operation, rather than the airflow generated by the additional heat dissipation device, which is conducive to reducing the manufacturing cost and energy consumption of the cleaning equipment.

[0008] As a possible implementation, the cleaning device further includes an air guide member. The airflow after passing through the filter at least partially flows to the outside through the air outlet, and is also at least partially introduced into the first receiving chamber through the air guide member.

[0009] Through the air guide member, when the fan is running, the airflow generated by the fan will be diverted after flowing through the filter on the downstream side of the fan, so that part of the airflow flows to the outside through the air outlet, and the other part of the airflow is introduced into the first receiving cavity under the guidance of the air guide member to take away the heat around the winder and the conductive cable.

[0010] As a possible implementation, a second receiving chamber for receiving the fan and the filter is further provided in the housing, and the second receiving chamber and the first receiving chamber are open to the same side. An air guide is installed on the open sides of the second receiving chamber and the first receiving chamber to at least partially guide the airflow into the first receiving chamber.

[0011] In this implementation, the airflow generated by the fan will flow out of the second receiving chamber toward the open side after passing through the filter on the downstream side of the fan. Since the air guide is located on the open side of the second receiving chamber and the first receiving chamber, the airflow flowing out of the second receiving chamber will be blocked and guided by the air guide after encountering the air guide and will be turned back, and then flow into the first receiving chamber to take away the heat generated by the winder and the conductive cable. This implementation has many advantages such as simple structure and easy assembly and disassembly.

[0012] As a possible implementation, the air guide member includes an air outlet and an air guide. The air outlet faces the second receiving cavity and is provided with mesh holes to allow part of the air flow to flow to the outside through the mesh holes, and the mesh holes form an air outlet. The air guide extends across the second receiving cavity and the first receiving cavity to introduce part of the air flow into the first receiving cavity.

[0013] A part of the airflow flowing from the second receiving chamber will flow directly to the outside through the mesh provided on the air outlet, and another part of the airflow flowing from the second receiving chamber will be blocked and guided by the air guide portion and turned back, and then flow into the first receiving chamber, taking away the heat around the cable winder and the conductive cable. The air guide member with this structure not only plays the role of guiding the airflow generated by the fan to the outside, but also plays the role of introducing the airflow into the first receiving chamber. Multiple functions are achieved through the air guide member, which is conducive to reducing the number of components required for the cleaning equipment, simplifying the complexity of the cleaning equipment, and then helping to reduce the manufacturing cost of the cleaning equipment, improve its reliability, and improve its convenience of disassembly and assembly.

[0014] As a possible implementation manner, the air guide member is provided with a partition rib protruding from the inner side surface thereof on its inner side, and the partition rib extends longitudinally between the air outlet portion and the air guide portion.

[0015] Under the blocking and guidance of the air guide, the flow direction of the airflow flowing to the air guide will change. The partition ribs with such a structure can block the airflow from flowing toward the side where the air outlet is located, thereby helping to ensure that enough airflow is introduced into the first receiving chamber. In addition, the partition ribs with such a structure also help to enhance the structural strength of the air guide.

[0016] As a possible implementation manner, the air guide portion is provided with a plurality of air guide ribs protruding from the inner surface thereof on the inner side thereof, and the plurality of air guide ribs extend in the transverse direction and are distributed in a longitudinal direction at intervals from each other.

[0017] In this way, a wind guiding channel extending in the transverse direction will be formed between any two adjacent wind guiding ribs. The wind guiding channel can help guide the airflow to flow transversely from the position facing the second receiving cavity to the position facing the first receiving cavity, thereby helping to introduce enough airflow into the first receiving cavity. In addition, the wind guiding ribs also help to enhance the structural strength of the wind guiding member.

[0018] As a possible implementation method, the air guide portion is also provided on its inner side with a plurality of N return air ribs protruding from its inner surface, each return air rib has a C-shaped structure open toward the partition ribs, and the Mth return air rib partially surrounds the M-1th return air rib, where M is an integer and N≥M≥2.

[0019] After the airflow flows horizontally to the position facing the second receiving chamber, the C-shaped return air ribs will form resistance to this part of the airflow, change the flow direction of this part of the airflow, and help guide this part of the airflow into the first receiving chamber. In addition, the return air ribs also help to enhance the structural strength of the air guide.

[0020] As a possible implementation manner, a chamber wall of the first receiving chamber is provided with an air outlet connected to the outside.

[0021] After completing the heat exchange with the cable winder and the conductive cable, the airflow entering the first receiving chamber will flow to the outside through the air outlet holes on the chamber wall. The air outlet holes can help reduce the flow resistance of the airflow in the process of flowing to the outside and reduce noise.

[0022] As a possible implementation, the shell includes a chassis, an outer shell and an inner shell, the inner shell is accommodated by the space defined by the outer shell and the chassis, the inner shell defines a second accommodation cavity, and the outer shell, the inner shell and the chassis define a first accommodation cavity.

[0023] This implementation method has many advantages such as simple structure and easy assembly and disassembly.

[0024] As a possible implementation manner, the inner shell is provided with a channel portion, and the channel portion defines an air guiding channel extending between the air guiding member and the first receiving cavity.

[0025] The wind guide channel can help guide the airflow into the first receiving cavity. In addition, this implementation has many advantages such as simple structure and convenient assembly and disassembly.

[0026] As a possible implementation, the cleaning device further includes a locking mechanism mounted on the air guide member, wherein the locking mechanism is configured to releasably fix the air guide member to the housing.

[0027] Through the locking mechanism, the operator can more conveniently remove and reinstall the air guide member, and further more conveniently clean and maintain the first receiving chamber, the second receiving chamber and the components inside them. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] It should be understood that the same or similar reference numerals are used in the drawings to indicate the same or similar elements.

[0030] It should be understood that the drawings are merely schematic and that the sizes and proportions of elements in the drawings are not necessarily accurate.

[0031] Figure 1 It is a schematic diagram of the structure of a cleaning device provided in one embodiment of the present disclosure.

[0032] Figure 2 yes Figure 1 A schematic diagram of the structure of the cleaning device in FIG. 1 viewed from another perspective.

[0033] Figure 3 yes Figure 1 Exploded view of the cleaning equipment in the figure.

[0034] Figure 4 yes Figure 1Another exploded view of the cleaning equipment in FIG.

[0035] Figure 5 yes Figure 1 Schematic cross-sectional view of a cleaning device in FIG.

[0036] Figure 6 yes Figure 1 Schematic diagram of the structure of the cleaning device after removing the shell.

[0037] Figure 7 It is a schematic diagram of the structure of the air guide plate of the cleaning equipment in 1. DETAILED DESCRIPTION

[0038] 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 herein, which are only for a more thorough and clear understanding of the present disclosure.

[0039] refer to Figure 1 and Figure 2 The present disclosure provides a cleaning device 100. For example, the cleaning device 100 provided by the present disclosure may be a vacuum cleaner. In particular, it may be a horizontal vacuum cleaner. For example, Figure 2 As shown, the cleaning device 100 may include a walking mechanism composed of a plurality of walking wheels 90. Of course, the cleaning device 100 provided by the present disclosure is not limited to a vacuum cleaner. Generally speaking, the cleaning device 100 provided by the present disclosure may be any type of cleaning device, as long as it cleans the surface to be cleaned or the object to be cleaned by sucking airflow.

[0040] Combination Figures 3 to 6 The cleaning device 100 may include a housing 10, a fan 20, a filter 30, a cable winder 40 and a conductive cable 50. Figure 5 As shown, the housing 10 may be provided with a first receiving cavity 10a, the cable winder 40 may be received in the first receiving cavity 10a, and the conductive cable 50 may be at least partially wound around the cable winder 40. Figure 3 As shown, the conductive cable 50 may be provided with a connector 51 , and may be connected to an external power source through the connector 51 to obtain electrical energy supply.

[0041] Back to Figure 5 When the cleaning device 100 is running, the fan 20 can generate an airflow path from the air inlet (not shown) to the air outlet 10c to suck dust and other dirt. Figure 5 In FIG. 1 , the airflow path is shown by a plurality of thick arrows. The filter 30 is disposed on the airflow path and is located on the downstream side of the fan 20. The airflow passing through the filter 30 is at least partially introduced into the first receiving chamber 10a. Figure 5In the figure, the part of the airflow introduced into the first receiving chamber 10a is shown by the arrow filled in black.

[0042] When the fan 20 is running, a part of the airflow generated by the fan 20 will be introduced into the first receiving chamber 10a where the cable winder 40 is located after passing through the filter 30 on the downstream side of the fan 20, so that the gas flow rate around the cable winder 40 and the conductive cable 50 is increased, and the heat around the cable winder 40 and the conductive cable 50 is taken away, thereby improving the heat dissipation effect of the cable winder 40 and the conductive cable 50. Since this part of the airflow first passes through the filter 30 on the downstream side of the fan 20 and then enters the first receiving chamber 10a, this part of the airflow has a higher degree of cleanliness and will not or less pollute the cable winder 40 and the conductive cable 50. For example, it will not or less cause dust to be deposited on the cable winder 40 and the conductive cable 50. In addition, the airflow that takes away the heat of the cable winder 40 and the conductive cable 50 comes from the airflow generated by the fan 20 when performing the cleaning operation, rather than the airflow generated by the additional heat dissipation device, which is conducive to reducing the manufacturing cost and energy consumption of the cleaning device 100.

[0043] There are many ways to introduce the airflow passing through the filter 30 into the first receiving chamber 10a, and the present disclosure does not specifically limit this. As an implementation method, refer to Figures 4 to 6 The cleaning device 100 may further include an air guide 60. Figure 5 As shown, the airflow after passing through the filter 30 can at least partially flow to the outside through the air outlet 10c, and can also be at least partially introduced into the first receiving chamber 10a through the air guide 60.

[0044] In this implementation, the air flow will be diverted through the air guide 60 after passing through the filter 30 on the downstream side of the fan 20, so that part of the air flow flows to the outside through the air outlet 10c, and the other part of the air flow is introduced into the first receiving chamber 10a under the guidance of the air guide 60 to take away the heat generated by the winder 40 and the conductive cable 50.

[0045] Further, continue to refer to Figure 5 The housing 10 may further include a second receiving chamber 10b for receiving the fan 20 and the filter 30. The second receiving chamber 10b and the first receiving chamber 10a may be opened toward the same side, that is, both facing Figure 5 The upper side of the second receiving chamber 10b is open. The air guide 60 may be installed at the open sides of the second receiving chamber 10b and the first receiving chamber 10a to at least partially introduce the airflow into the first receiving chamber 10a.

[0046] In this way, the airflow generated by the fan 20 will flow out of the second receiving chamber 10b toward the open side after passing through the filter 30. Since the air guide 60 is located on the open side of the second receiving chamber 10b and the first receiving chamber 10a, the airflow flowing out of the second receiving chamber 10b will be blocked and guided by the air guide 60 after encountering the air guide 60 and will be turned back, and then flow into the first receiving chamber 10a, taking away the heat generated by the winding device 40 and the conductive cable 50. This implementation method has many advantages such as simple structure and easy assembly and disassembly.

[0047] There are many ways to implement the air guide 60, and the present disclosure does not impose any particular restrictions on this. As an implementation method, refer to Figures 5 to 7 , the air guide 60 may include an air outlet 61 and an air guide 62. The air outlet 61 may face the second receiving chamber 10b and be provided with a mesh 611 to allow part of the air flow to flow to the outside through the mesh 611. Here, the mesh 611 forms the air outlet 10c, or the mesh 611 is the air outlet 10c. The air guide 62 may extend across the second receiving chamber 10b and the first receiving chamber 10a to introduce part of the air flow into the first receiving chamber 10a.

[0048] In this implementation, a part of the airflow flowing out of the second receiving chamber 10b will flow directly to the outside through the mesh 611 provided on the air outlet 61, and the other part of the airflow will be blocked and guided by the air guide 62 and turned back, and then flow into the first receiving chamber 10a, taking away the heat around the cable winder 40 and the conductive cable 50. The air guide 60 with this structure not only plays the role of guiding the airflow generated by the fan 20 to the outside, but also plays the role of introducing the airflow into the first receiving chamber 10a. Multiple functions are achieved by the air guide 60, which is conducive to reducing the number of components required for the cleaning device 100, simplifying the complexity of the cleaning device 100, and then helping to reduce the manufacturing cost of the cleaning device 100, improve its reliability, and improve its convenience of disassembly and assembly.

[0049] Further, refer to Figure 7 The air guide member 60 may be provided with a partition rib 63 protruding from the inner side thereof on its inner side, and the partition rib 63 may extend longitudinally between the air outlet portion 61 and the air guide portion 62 .

[0050] Under the blocking and guidance of the air guide portion 62, the flow direction of the airflow flowing to the air guide portion 62 will change. The partition rib 63 can block the airflow from flowing toward the side where the air outlet portion 61 is located, thereby helping to ensure that enough airflow is introduced into the first receiving chamber 10a. In addition, the partition rib 63 also helps to enhance the structural strength of the air guide 60.

[0051] Further, continue to refer to Figure 7The wind guide portion 62 may be provided with a plurality of wind guide ribs 621 protruding from the inner surface thereof on its inner side, and the plurality of wind guide ribs 621 may extend in the transverse direction and be distributed at intervals from each other in the longitudinal direction.

[0052] In this way, a wind guiding channel extending in the transverse direction will be formed between any two adjacent wind guiding ribs 621. The wind guiding channel can help guide the airflow to flow transversely from the position facing the second receiving chamber 10b to the position facing the first receiving chamber 10a, thereby helping to introduce enough airflow into the first receiving chamber 10a. In addition, the wind guiding ribs 621 also help to enhance the structural strength of the wind guiding member 60.

[0053] Further, continue to refer to Figure 7 The air guide portion 62 may also be provided with a plurality of N return air ribs 622 protruding from its inner surface on its inner side. Each return air rib 622 may have a C-shaped structure open toward the partition rib 63. The Mth return air rib 622 may partially surround the M-1th return air rib 622, where M is an integer and N≥M≥2.

[0054] Let's take a specific example to illustrate. Figure 7 As shown, the air guide 62 may be provided with three return air ribs 622, namely, a first return air rib 622a, a second return air rib 622b, and a third return air rib 622c. That is, in this specific example, N is 3. The first return air rib 622a is located at the innermost side of the three return air ribs 622, the second return air rib 622b partially surrounds the first return air rib 622a, and the third return air rib 622c partially surrounds the second return air rib 622b.

[0055] It is understandable that, although in this specific example, N is 3, in other examples of the present disclosure, N may also be any integer greater than 3. That is, the present disclosure does not particularly limit the number of the return air ribs 622 .

[0056] According to this implementation, after the airflow flows horizontally to the position facing the second receiving chamber 10b, the C-shaped return air rib 622 will form resistance to this part of the airflow, change the flow direction of this part of the airflow, and help guide this part of the airflow into the first receiving chamber 10a. In addition, the return air rib 622 also helps to enhance the structural strength of the air guide 60.

[0057] Please go back Figure 2 and Figure 5 In some examples, the chamber wall of the first receiving chamber 10a may be provided with an air outlet 10d connected to the outside. In this way, the airflow entering the first receiving chamber 10a will flow to the outside through the air outlet 10d of the chamber wall after completing the heat exchange with the winding device 40 and the conductive cable 50. The air outlet 10d can help reduce the flow resistance of the airflow in the process of flowing to the outside and reduce noise.

[0058] It is understandable that, although in the current example, the chamber wall of the first receiving chamber 10a may be provided with an air outlet 10d connected to the outside, in other examples of the present disclosure, the air outlet 10d may not exist. For example, in some examples, the airflow entering the first receiving chamber 10a may flow to the outside through the gaps between different parts of the housing 10, although this may cause noise due to the higher flow resistance.

[0059] The present disclosure does not specifically limit how to form the first receiving cavity 10a and the second receiving cavity 10b in the housing 10. As an implementation method, refer to Figure 3 The housing 10 may include an outer housing 11, an inner housing 12 and a chassis 13. The outer housing 11 may be assembled with the chassis 13 to define an internal space, and the inner housing 12 may be accommodated in the internal space. The inner housing 12 may define the second accommodation chamber 10b alone, and the outer housing 11, the inner housing 12 and the chassis 13 may define the first accommodation chamber 10a together. This implementation has many advantages such as simple structure and convenient assembly and disassembly.

[0060] Furthermore, combined with Figure 3 and Figure 5 The inner shell 12 may be provided with a channel portion 121, and the channel portion 121 may define an air guide channel 121a extending between the air guide member 60 and the first receiving chamber 10a. The air guide channel 121a can guide the airflow into the first receiving chamber 10a. In addition, this implementation has many advantages such as simple structure and convenient assembly and disassembly.

[0061] It is understood that in other examples of the present disclosure, the first receiving cavity 10a and the second receiving cavity 10b may be formed in other ways in the housing 10. For example, in some examples, the housing 10 may not include the inner housing 12, and the first receiving cavity 10a and the second receiving cavity 10b may be defined by the outer housing 11 and the chassis 13.

[0062] After the cleaning device 100 has been running for a period of time, dust and other dirt will inevitably accumulate in the first receiving chamber 10a and the second receiving chamber 10b. In order to maintain the operating performance and life of the cleaning device 100, the first receiving chamber 10a, the second receiving chamber 10b and the components inside them need to be cleaned and maintained regularly. For example, the filter 30 needs to be cleaned or maintained regularly.

[0063] Considering the above requirements, in some examples, such as Figure 4As shown, cleaning device 100 may further include a locking mechanism 70. The locking mechanism 70 may be installed on air guide 60. The locking mechanism 70 may be configured to releasably fix air guide 60 to housing 10. In this way, through the locking mechanism 70, the operator may more conveniently remove and reinstall the air guide 60, and then more conveniently clean and maintain the first accommodating chamber 10a, the second accommodating chamber 10b and the components (e.g., filter 30) therein.

[0064] There are many ways to implement the locking mechanism 70, and the present disclosure does not impose any particular limitation on this. Figure 4 The locking mechanism 70 may include a locking member 71 and an elastic member 72, and the housing 10 may be provided with a matching structure that matches the locking member 71. The locking member 71 may be combined with the matching structure, such as snapping, to fix the air guide 60 to the housing 10. At the same time, the locking member 71 can be operated to separate from the matching structure to release the air guide 60, allowing the operator to remove the air guide 60 from the housing 10. The elastic member 72 can be used to keep the locking member 71 in a position combined with the matching structure, and reset it to a position combined with the matching structure after the operator releases the locking member 71.

[0065] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0066] It should be understood that although the terms "first" or "second" etc. may be used in the present disclosure to describe various elements (such as a first receiving cavity and a second receiving cavity), these elements are not defined by these terms, and these terms are only used to distinguish one element from another.

[0067] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which 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 housing, a fan, a filter, a cable winder and a conductive cable, wherein a first receiving chamber for receiving the cable winder is provided in the housing, the conductive cable is at least partially wound around the cable winder, the cleaning device has an air inlet and an air outlet, the fan is used to form an air flow path from the air inlet to the air outlet, and is characterized in that: The filter is on the airflow path and is located on the downstream side of the fan, and the airflow passing through the filter is at least partially introduced into the first receiving chamber.

2. The cleaning device according to claim 1, characterized in that The cleaning device further comprises an air guide, and the airflow after passing through the filter at least partially flows to the outside through the air outlet, and is also at least partially introduced into the first receiving chamber through the air guide.

3. The cleaning device according to claim 2, characterized in that: The shell also has a second receiving chamber for receiving the fan and the filter, and the second receiving chamber and the first receiving chamber are open to the same side; the air guide is installed on the open sides of the second receiving chamber and the first receiving chamber to at least partially introduce the airflow into the first receiving chamber.

4. The cleaning device according to claim 3, characterized in that: The air guide member includes an air outlet portion and an air guide portion; the air outlet portion faces the second receiving chamber and is provided with a mesh hole to allow part of the airflow to flow to the outside through the mesh hole, and the mesh hole forms the air outlet; the air guide portion extends across the second receiving chamber and the first receiving chamber to introduce part of the airflow into the first receiving chamber.

5. The cleaning device according to claim 4, characterized in that The air guide member is provided with a partition rib protruding from the inner side thereof on its inner side, and the partition rib extends longitudinally between the air outlet portion and the air guide portion.

6. The cleaning device according to claim 5, characterized in that The wind guide portion is provided with a plurality of wind guide ribs protruding from the inner surface thereof on its inner side, and the plurality of wind guide ribs extend in the transverse direction and are distributed at intervals from each other in the longitudinal direction.

7. The cleaning device according to claim 6, characterized in that The air guide portion is also provided with a plurality of N return air ribs protruding from its inner surface on its inner side, each return air rib has a C-shaped structure open toward the partition ribs, and the Mth return air rib partially surrounds the M-1th return air rib, where M is an integer and N≥M≥2.

8. The cleaning device according to any one of claims 1 to 7, characterized in that The chamber wall of the first receiving chamber is provided with an air outlet connected to the outside.

9. The cleaning device according to any one of claims 3 to 7, characterized in that The shell includes a chassis, an outer shell and an inner shell. The inner shell is received by a space defined by the outer shell and the chassis. The inner shell defines the second receiving cavity. The outer shell, the inner shell and the chassis define the first receiving cavity.

10. The cleaning device according to claim 9, characterized in that The inner shell is provided with a channel portion, and the channel portion defines an air guide channel for introducing airflow into the first receiving cavity.

11. The cleaning device according to any one of claims 2 to 7, characterized in that The cleaning device further comprises a locking mechanism mounted on the air guide, wherein the locking mechanism is configured to releasably fix the air guide to the housing.

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