Cleaning device

Abstract

The utility model discloses cleaning equipment which comprises a dust collector and a base, the dust collector has a dust collection mode and a dust collection mode, and power sources of the dust collection mode and the dust collection mode come from a fan assembly; the dust collector further comprises an air duct switching piece, the air duct switching piece is arranged between the fan assembly and the dust cup assembly, and switching between a dust collection mode and a dust collection mode is achieved by manually operating the air duct switching piece. The base comprises a dust collection box, a dust bag is placed in the dust collection box, the base further comprises an air return pipe, and when the dust collector is placed on the base, the dust collection box is communicated with at least one ventilation opening through the air return pipe. According to the dust collector, the dust collection mode of the dust collector can be switched into the dust collection mode by manually operating the air duct switching piece, self-cleaning of the filtering assembly is carried out, dust is automatically guided into a dust bag in a base station, the cleaning effect is good, and the filtering net cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a cleaning equipment, such as a vacuum cleaner. Background Art

[0002] Handheld cleaning devices (such as handheld vacuum cleaners) are increasingly entering thousands of households due to their small size, portability, and freedom from power cords. Handheld cleaning devices generally use the negative pressure generated by the fan to absorb garbage and other impurities into the dust bin for collection. The dust cup has a small volume, and after use, the dust bin is opened to dump the garbage. However, when dumping the dust, the dust will scatter, causing secondary pollution.

[0003] In order to solve the above problems, base stations with dust collection functions have appeared on the market, which can collect dust in the dust cup to avoid dust. For example, Chinese patent document number CN218651617U discloses a cleaning equipment base station dust collection system, including a base station and a cleaning equipment, the base station includes a base, a support rod and a support component, the support component is provided with a dust collection cavity, the base is provided with a dust bag and a negative pressure component, the cleaning equipment includes a hand-held rod and a dust cup, the dust cup has a dust cup body and a dust cup bottom cover, the dust cup body is provided with a release button for controlling the dust cup bottom cover to rotate to open or close, the cleaning equipment is placed on the base station, the trigger part on the base station triggers the bottom cover release button, the dust cup bottom cover opens, the negative pressure component sucks to generate negative pressure inside the accommodating cavity, and the dust inside the dust cup body automatically falls and is collected in the base station, so as to achieve the purpose of self-dust collection. This conventional cleaning device is equipped with two suction devices. One suction device is arranged inside the cleaning device, and is used to generate negative pressure in the dust cup during vacuuming operation to achieve the purpose of vacuuming. The other suction device is used to generate negative pressure in the dust collecting chamber of the base station during dust collection to achieve the purpose of collecting dust in the dust cup, i.e., collecting dust. On the one hand, the cost is relatively high. On the other hand, the airflow passes through the long suction channel at the front end during suction, and the air volume loss is relatively large, resulting in a small integrated effective air volume and poor dust collection effect. On the other hand, the weight of the entire cleaning device is relatively large, which is not conducive to customer transportation. In addition, the dust cup of the cleaning device is usually provided with a filter separation component for separating dust particles, such as a conventional cyclone filter. As the core component of the cleaning device, after frequent use of the filter separation component, a lot of dust and debris will accumulate on the filter element, resulting in a poor filtering effect. It needs to be cleaned to improve its filtering effect, and cleaning has always been a major problem that plagues consumers.

[0004] The earliest technology generally adopts the method of disassembling the filter assembly and manually washing it with water or blowing it, etc. However, this method is cumbersome and inefficient in the cleaning process. During the hand washing process, the dust is close to the person and it is easy for the dust to enter the human respiratory system during cleaning. Therefore, it cannot meet the current market demand. To solve this problem, there are various solutions of filter self-cleaning structures on the market, which can be roughly divided into contact cleaning structures and non-contact cleaning structures. The contact cleaning structure has a dust scraping strip, a brush strip, a scraper, etc. that directly acts on the filter screen, and the non-contact cleaning structure has a knocking vibration or negative pressure suction method. The contact cleaning method generally operates at the same time as the cleaning equipment is started. The user cannot choose the self-cleaning time according to their needs. The noise is large during operation, affecting the experience, and the cleaning effect is not good. For the relatively hard cleaning parts such as scrapers, it is easy to damage the filter screen during the cleaning process, which affects the filtering effect of the filter screen or even makes the filter screen ineffective. Utility Model Content

[0005] In order to solve at least one technical problem of the prior art, the utility model provides a cleaning device.

[0006] In order to achieve the above-mentioned utility model object, the technical solution adopted by the utility model is: a cleaning device, including a vacuum cleaner and a base, the vacuum cleaner includes a shell and a fan assembly and a dust cup assembly arranged in the shell, and the shell is provided with a plurality of vents;

[0007] The vacuum cleaner further comprises an air duct switching device, the air duct switching device having an air inlet and at least two air outlets, so that the cleaning device has a dust suction mode and a dust collection mode; the power sources of the dust suction mode and the dust collection mode are both from the fan assembly;

[0008] The air duct switching device includes an air duct switching member, which is arranged between the fan assembly and the dust cup assembly, and the dust suction mode and the dust collection mode are switched by operating the air duct switching member;

[0009] The base includes a dust collecting box, in which a dust bag is placed, and the base also includes a return air duct. When the vacuum cleaner is placed on the base, it enters a dust collection mode. At this time, a portion of the airflow in the dust collecting box is transported back to the fan assembly through the return air duct.

[0010] Specifically, the return air duct connects the dust collecting box with at least one vent, and transports the airflow in the dust collecting box back to the fan assembly through the return air duct. In the specific flow process of the airflow, a part of the airflow from the dust collecting box can first enter the air duct switching device through the return air duct, and then directly discharge from the vent of the vacuum cleaner shell; or enter the air duct switching device and the fan assembly in sequence, and then discharge from the vent of the vacuum cleaner shell; or directly enter the fan assembly, and then discharge from the vent of the vacuum cleaner shell.

[0011] In some embodiments, the air duct switching member is rotatably disposed in the housing, and the air duct switching member includes at least one group of first ventilation units and at least one group of second ventilation units, and the at least one group of first ventilation units and the at least one group of second ventilation units are alternately arranged along the circumference of the air duct switching member;

[0012] The housing is provided with a plurality of ventilation openings, and the switching between the dust suction mode and the dust collection mode is realized by manually operating the air duct switching member to rotate so that the first ventilation unit and the second ventilation unit are respectively connected to the ventilation openings.

[0013] In some embodiments, the air duct switching member includes a bottom plate and an inner sleeve and an outer sleeve that are coaxially arranged, and the bottom plate blocks the bottoms of the inner sleeve and the outer sleeve;

[0014] The outer sleeve is provided with at least one first vent, and the inner sleeve is correspondingly provided with at least one second vent. The air duct switching member is further provided with at least one connecting portion between the inner sleeve and the outer sleeve, and the connecting portion and the bottom plate form an air flow channel connecting the first vent and the second vent. One first vent, one second vent and one air flow channel together form a group of the first ventilation units.

[0015] The outer sleeve is further provided with at least a third vent, and the third vent and the first vent are alternately arranged along the circumference of the outer sleeve, and the third vent constitutes the second ventilation unit.

[0016] In some embodiments, the fan assembly has an air inlet and an air outlet, and the inner sleeve is rotatably disposed at the air inlet of the fan assembly;

[0017] The dust cup assembly has a plurality of air flow openings;

[0018] When the vacuum cleaner is in a vacuuming mode, the air flow port, the first ventilation unit and the air inlet are connected in sequence to form a vacuum inlet air passage of the vacuum cleaner, and the air outlet, the second ventilation unit and the vent are connected in sequence to form a vacuum outlet air passage of the vacuum cleaner;

[0019] When the vacuum cleaner is in the dust collection mode, the vent, the first ventilation unit and the air inlet are connected in sequence to form a dust collection inlet flow duct of the vacuum cleaner, and the air outlet, the second ventilation unit and the air outlet are connected in sequence to form the dust collection outlet flow duct.

[0020] In some embodiments, the dust cup assembly includes a filter assembly and a filter bracket, the filter bracket has a connecting cylinder and a connecting plate arranged on the top of the connecting cylinder, the filter assembly is installed below the connecting plate, and the connecting plate is provided with a plurality of the air flow openings;

[0021] The outer sleeve is arranged in the connecting cylinder body, and the connecting cylinder body is provided with at least one air passage, and the air passage is communicated with the ventilation port.

[0022] In some embodiments, the outer sleeve is tightly disposed in the connecting cylinder;

[0023] The inner wall of the connecting cylinder is provided with at least one groove extending in the axial direction, and the groove and the air passage are arranged along the circumference of the connecting cylinder;

[0024] When the vacuum cleaner is in a dust collection mode, the groove connects the air flow port and the first ventilation unit, and when the vacuum cleaner is in a dust collection mode, the groove connects the second ventilation unit and the air flow port.

[0025] In some embodiments, the air flow opening includes a main air flow opening and a plurality of dust collecting air flow openings, the main air flow opening is opened at the center of the connecting plate, and the plurality of dust collecting air flow openings surround the main air flow opening in a circumferential direction;

[0026] The dust cup assembly further includes a plurality of blocking blocks protruding downward from the bottom plate, and the blocking blocks are arranged corresponding to the dust collecting air flow outlets;

[0027] When the vacuum cleaner is in the dust collection mode, the blocking block blocks the plurality of dust collection air flow openings. When the vacuum cleaner is in the dust collection mode, the plurality of dust collection air flow openings are connected to the second ventilation unit.

[0028] In some embodiments, the air duct switching member further comprises a baffle ring disposed on the top of the outer sleeve, and the top of the dust cup assembly abuts against the lower end surface of the baffle ring;

[0029] The outer circumference of the retaining ring is provided with a manual operating part protruding outward, the outer shell is provided with a long strip of movable opening, the manual operating part is arranged in the movable opening and extends out of the movable opening, and the air duct switching member is rotated by pushing the manual operating part to move along the movable opening.

[0030] In some embodiments, a movable plate that is locked in the vacuuming mode is disposed at the bottom of the housing, and a rear trigger is disposed on the base. When the vacuum cleaner is placed on the base, the trigger triggers the movable plate to open.

[0031] In some embodiments, the base further includes a mounting shell, wherein the mounting shell has an air collecting portion extending from the starting end of the return air duct to the outer wall of the dust collecting box body;

[0032] The dust collecting box is arranged in the installation shell, and the dust collecting box is provided with a plurality of air outlets arranged at intervals within the range surrounded by the air collecting part.

[0033] The beneficial effects of the utility model are:

[0034] 1. The vacuum cleaner of the utility model has a dust collection mode and a dust collection mode. The dust collection mode of the vacuum cleaner can be switched to the dust collection mode by manually operating the air duct switching member, so that the fan assembly can blow the garbage in the dust cup assembly into the dust bag of the base, thereby performing self-cleaning of the filter assembly, with good cleaning effect and without damaging the filter screen;

[0035] 2. The base station of the utility model has a return air duct. When the vacuum cleaner is in the dust collection mode, part of the airflow in the dust collection box is transported back to the fan assembly through the return air duct, thereby achieving a similar effect of negative pressure dust collection, which not only realizes the recycling of wind, improves the dust collection efficiency, and reduces the energy consumption of the cleaning equipment, but also solves the technical problem of dust flying in the positive pressure dust collection in the prior art;

[0036] 3. The cleaning device of the utility model has a simple structure, is easy to operate, and is suitable for popularization and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional diagram of the cleaning device of the utility model;

[0038] Figure 2 It is a three-dimensional diagram of the vacuum cleaner of the utility model;

[0039] Figure 3 It is a cross-sectional view of the vacuum cleaner of the utility model;

[0040] Figure 4 It is a three-dimensional structural schematic diagram of the air duct switching component of the utility model;

[0041] Figure 5 It is a three-dimensional structural schematic diagram of the filter bracket of the vacuum cleaner of the present utility model;

[0042] Figure 6 It is an airflow direction diagram of the vacuum cleaner of the utility model in the vacuuming mode;

[0043] Figure 7 This is an airflow direction diagram of the vacuum cleaner of the utility model in the dust collection mode;

[0044] Figure 8 It is a cross-sectional view of the cleaning device of the utility model;

[0045] Fig. 9 This is an airflow direction diagram of the cleaning device of the utility model in the dust collection mode.

[0046] Fig.10 It is a structural schematic diagram of the dust collection mode in the embodiment of the utility model.

[0047] Fig.11 It is a structural schematic diagram of the dust collection mode in the embodiment of the utility model.

[0048] Fig.12 It is another structural schematic diagram of the dust collection mode in the embodiment of the utility model. DETAILED DESCRIPTION

[0049] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0050] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0051] In this application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the utility model and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0052] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0053] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0054] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0055] Reference Figures 1 to 12 The utility model provides a cleaning device, a vacuum cleaner A and a base B. The vacuum cleaner A includes a housing 1 and a fan assembly 2 and a dust cup assembly 3 arranged in the housing 1. The cleaning device has a dust suction mode and a dust collection mode. The power sources of the dust suction mode and the dust collection mode are both from the fan assembly 2. The cleaning device also includes an air duct switching member 4, which is arranged between the fan assembly 2 and the dust cup assembly 3. The air duct switching member 4 is operated to realize the switching between the dust suction mode and the dust collection mode.

[0056] When the dust stored in the dust cup assembly 3 needs to be introduced into the dust bag in the base station or the dust cup assembly 3 needs to be cleaned, the dust collection mode of the vacuum cleaner A is switched to the dust collection mode by operating the air duct switching member 4. Furthermore, the air duct switching member 4 is rotatably arranged in the housing 1, and the switching between the dust collection mode and the dust collection mode can be realized by manually operating the air duct switching member 4 to rotate.

[0057] In some embodiments, the air duct switching member 4 includes at least one group of first ventilation units and at least one group of second ventilation units, and the at least one group of first ventilation units and at least one group of second ventilation units are alternately arranged along the circumference of the air duct switching member 4. The housing 1 is provided with a plurality of vents 120, and the switching between the dust suction mode and the dust collection mode is realized by manually operating the air duct switching member 4 to rotate so that the first ventilation unit and the second ventilation unit are respectively connected to the vents 120. Specifically, in the dust suction mode, the first ventilation unit is connected to the vents 120, so that the airflow of the negative pressure dust suction of the fan assembly 2 is discharged from the vacuum cleaner A through the first ventilation unit and the vents 120 in turn; in the dust collection mode, the second ventilation unit is connected to the vents 120, so that the atmosphere enters the fan assembly 2 through the vents 120 and the second ventilation unit in turn to complete the positive pressure dust blowing of the fan assembly 2.

[0058] Further, refer to Figure 4 The air duct switching member 4 includes a bottom plate 43 and an inner sleeve 41 and an outer sleeve 42 which are coaxially arranged. The bottom plate 43 blocks the bottom of the inner sleeve 41 and the outer sleeve 42. The outer sleeve 42 is provided with at least one first vent 421, and the inner sleeve 41 is correspondingly provided with at least one second vent 411. The air duct switching member 4 is also provided with at least one connecting portion 47 between the inner sleeve 41 and the outer sleeve 42. The connecting portion 47 and the bottom plate 43 form an air flow channel connecting the first vent 421 and the second vent 411. A first vent 421, a second vent 411 and an air flow channel together constitute a group of first ventilation units. The outer sleeve 42 is also provided with at least a third vent 422, and the third vent 422 and the first vent 421 are alternately arranged along the circumference of the outer sleeve 42, and the third vent 422 constitutes a second ventilation unit.

[0059] The fan assembly 2 has an air inlet 221 and an air outlet 222 . The inner sleeve 41 is rotatably disposed at the air inlet of the fan assembly 2 . The dust cup assembly 3 has a plurality of air flow openings 3210 .

[0060] Reference Figure 6 When the vacuum cleaner A is in the vacuuming mode, the airflow port 3210, the first ventilation unit and the air inlet 221 are connected in sequence to form the vacuum inlet airflow channel of the vacuum cleaner A, and the air outlet 222, the second ventilation unit and the vent 120 are connected in sequence to form the vacuum outlet airflow channel of the vacuum cleaner A.

[0061] Reference Figure 7 When the vacuum cleaner A is in the dust collection mode, the vent 120, the first ventilation unit and the air inlet 221 are connected in sequence to form the dust collection inlet flow duct of the vacuum cleaner A, and the air outlet 222, the second ventilation unit and the air outlet 3210 are connected in sequence to form the dust collection outlet flow duct.

[0062] In certain embodiments, reference Figure 4 The dust cup assembly 3 includes a filter assembly 31 and a filter bracket 32. The filter bracket 32 ​​has a connecting cylinder 321 and a connecting plate 322 arranged on the top of the connecting cylinder 321. The filter assembly 31 is installed below the connecting plate 322. The connecting plate 322 is provided with a plurality of air flow openings 3210. The outer sleeve 42 is disposed in the connecting cylinder 321. The connecting cylinder 321 is provided with at least one air port 3221, and the air port 3221 is communicated with the vent 120.

[0063] In some embodiments, the outer sleeve 42 is tightly disposed in the connecting cylinder 321. The inner wall of the connecting cylinder 321 is provided with at least one groove 3222 extending in the axial direction, and the groove 3222 and the air port 3221 are arranged along the circumference of the connecting cylinder 321. When the vacuum cleaner A is in the dust collection mode, the groove 3222 connects the air flow port 3210 and the first ventilation unit, and when the vacuum cleaner A is in the dust collection mode, the groove 3222 connects the second ventilation unit and the air flow port 3210.

[0064] In some embodiments, the air flow inlet 3210 includes a main air flow inlet 3211 and a plurality of dust collecting air flow inlets 3212, the main air flow inlet 3211 is opened at the center of the connecting plate 322, and the plurality of dust collecting air flow inlets 3212 surround the main air flow inlet 3211 in a circumferential direction; the dust cup assembly 3 also includes a plurality of blocking blocks 46 protruding downward from the bottom plate 43, and the blocking blocks 46 are arranged corresponding to the dust collecting air flow inlets 3212; when the vacuum cleaner A is in the dust collection mode, the blocking blocks 46 block the plurality of dust collecting air flow inlets 3212, and when the vacuum cleaner A is in the dust collection mode, the plurality of dust collecting air flow inlets 3212 are connected to the second ventilation unit.

[0065] In some embodiments, the fan assembly 2 includes a fan 22 and a fan bracket 21 , and the fan 22 is installed in the fan bracket 21 .

[0066] Furthermore, the air duct switching member 4 also includes a baffle ring 44 arranged on the top of the outer sleeve 42, the top of the dust cup assembly 3 abuts against the lower end surface of the baffle ring 44, and the baffle ring 44 is sleeved on the outside of the outer sleeve.

[0067] The outer circumference of the retaining ring 44 is provided with a manual operating part 45 protruding outwards, and the housing 1 is provided with a long strip of movable opening, the manual operating part 45 is arranged in the movable opening and extends out of the movable opening, and the air duct switching member 4 is rotated by pushing the manual operating part 45 to move along the movable opening. Furthermore, the angle of the movable opening is equal to the angle of the adjacent first vent 42 and the third vent 422, that is, when the manual operating part 45 is pushed from one end of the movable opening to the other end, the first vent 42 and the third vent 422 can be switched to communicate with the vent 120.

[0068] In some embodiments, the housing 1 includes a first shell 11, a second shell 12 and a third shell 13, wherein the second shell 12 is detachably configured between the first shell 11 and the third shell 13, the dust cup assembly 3 is configured in the first shell 11, the fan assembly 2 is configured in the third shell 13, the air duct switching member 4 is rotatably configured in the second shell 12, and the second shell 12 is provided with a plurality of ventilation openings 120 and movable openings.

[0069] In some embodiments, the vacuum cleaner A further includes an air duct 6 and a handle 5 . The air duct 6 is disposed on the first shell 11 and is connected to the dust cup assembly 3 .

[0070] Furthermore, a movable plate 110 which is locked in the vacuuming mode is provided at the bottom of the first shell 11, and a rear trigger is provided on the base B. When the vacuum cleaner A is placed on the base B, the trigger triggers the movable plate 110 to open, so that dust mites and other garbage sucked into the dust cup assembly 3 through the vacuuming mode can fall into the base B.

[0071] In some embodiments, the base B includes a mounting shell 7, a dust collecting box 10 disposed in the mounting shell 7, a dust mite circulation member 8 disposed above the dust collecting box 10, and a return air duct 70. When the vacuum cleaner A is placed on the base B, the vacuum cleaner A enters a dust collection mode. At this time, the return air duct 70 connects the dust collecting box 10 with at least one vent 120, and transports the airflow in the dust collecting box 10 back to the fan assembly 2 through the return air duct 70.

[0072] When vacuum cleaner A is placed on base B and the dust collection mode is turned on, the return air duct 70 can transport the air blown into the dust collection box 10 by the fan 22 back to the air inlet 221 of the fan 22, thereby realizing the recycling of the air blown by the fan 22, improving the dust collection efficiency of vacuum cleaner A, and reducing the energy consumption of the cleaning equipment.

[0073] Furthermore, the mounting shell 7 has an air collecting portion 71, which extends from the beginning of the return air duct 70 to the outer wall of the dust collecting box 10, and forms a passage connecting the dust collecting box 10 and the return air duct 70. The dust collecting box 10 is provided with a plurality of air ports 100 arranged at intervals in the area surrounded by the air collecting portion 71. The air in the dust collecting box 10 enters the air collecting portion 71 through the air ports 100, and then flows into the air inlet 221 of the fan 22 through the return air duct 70. At the same time, the plurality of air ports 100 also form a filter to prevent the garbage in the dust collecting box 10 from entering the return air duct 70.

[0074] See also Fig.10 , is a schematic diagram of the structure of the dust collection mode in this embodiment, the airflow enters from the air inlet of the vacuum cleaner, passes through the dust cup assembly for cyclone separation, then enters the fan assembly through the air duct switching device, and finally enters and exhausts from the exhaust port of the fan assembly. Fig.11, which is a structural schematic diagram of a dust collection mode in an embodiment: when dust collection operation is performed, air is supplied at the entrance of the base by the dust cup assembly. At the same time, a vent is provided at the lower part or bottom of the base (preferably arranged below the dust bag of the base), and the vent draws part of the airflow of the base to the air duct switching device, and then enters the fan assembly, and finally the air is taken in and exhausted by the exhaust port of the fan assembly; thereby forming an airflow circulation in the base.

[0075] See also Fig.12 , which is another structural diagram of the dust collection mode in the embodiment: when the dust collection operation is performed, the dust cup assembly supplies air to the inlet of the base. At the same time, a vent is provided at the lower part or bottom of the base (preferably arranged below the dust bag of the base), and the vent draws part of the airflow of the base to the air duct switching device. This part of the airflow can be divided into two, one part is discharged outside the vacuum cleaner (for example, it can account for 20%), and the other part is sent to the dust cup assembly to continue to supply air to the inlet of the base; thereby forming an airflow circulation in the base.

[0076] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cleaning device, comprising a vacuum cleaner (A) and a base (B), wherein the vacuum cleaner (A) comprises a housing (1), and a fan assembly (2) and a dust cup assembly (3) arranged in the housing (1), wherein the housing (1) is provided with a plurality of ventilation openings (120), and wherein: The vacuum cleaner further comprises an air duct switching device, the air duct switching device having an air inlet and at least two air outlets, so that the cleaning device has a dust suction mode and a dust collection mode; the power sources of the dust suction mode and the dust collection mode are both derived from the fan assembly (2); The air duct switching device comprises an air duct switching component (4), wherein the air duct switching component (4) is arranged between the fan assembly (2) and the dust cup assembly (3), and the switching between the dust suction mode and the dust collection mode is achieved by operating the air duct switching component (4); The base (B) comprises a dust collecting box (10), a dust bag (9) is arranged inside the dust collecting box (10), and the base (B) also comprises a return air duct (70). When the vacuum cleaner (A) is placed on the base (B), it enters a dust collecting mode. At this time, a part of the airflow in the dust collecting box is transported back to the fan assembly (2) through the return air duct (70).

2. The cleaning device according to claim 1, characterized in that The air duct switching component (4) is rotatably arranged in the housing (1), and the air duct switching component (4) comprises at least one group of first ventilation units and at least one group of second ventilation units, and the at least one group of first ventilation units and the at least one group of second ventilation units are alternately arranged along the circumference of the air duct switching component (4). The air duct switching component (4) is manually operated to rotate so that the first ventilation units and the second ventilation units are respectively connected to the ventilation port (120) to realize the switching between the dust suction mode and the dust collection mode.

3. The cleaning device according to claim 2, characterized in that: The air duct switching member (4) comprises a bottom plate (43) and an inner sleeve (41) and an outer sleeve (42) which are coaxially arranged, and the bottom plate (43) blocks the bottoms of the inner sleeve (41) and the outer sleeve (42); The outer sleeve (42) is provided with at least one first vent (421), and the inner sleeve (41) is correspondingly provided with at least one second vent (411); the air duct switching member (4) is further provided with at least one connecting portion (47) between the inner sleeve (41) and the outer sleeve (42); the connecting portion (47) and the bottom plate (43) form an air flow channel connecting the first vent (421) and the second vent (411); one first vent (421), one second vent (411) and one air flow channel together form a group of the first ventilation units; The outer sleeve (42) is further provided with at least a third ventilation port (422), and the third ventilation port (422) and the first ventilation port (421) are arranged alternately along the circumference of the outer sleeve (42), and the third ventilation port (422) constitutes the second ventilation unit.

4. The cleaning device according to claim 3, characterized in that: The fan assembly (2) has an air inlet (221) and an air outlet (222), and the inner sleeve (41) is rotatably arranged at the air inlet of the fan assembly (2); The dust cup assembly (3) has a plurality of air flow openings (3210); When the vacuum cleaner (A) is in a vacuuming mode, the air flow port (3210), the first ventilation unit and the air inlet (221) are connected in sequence to form a vacuuming inlet air passage of the vacuum cleaner (A), and the air outlet (222), the second ventilation unit and the vent (120) are connected in sequence to form a vacuuming outlet air passage of the vacuum cleaner (A); When the cleaning device is in the dust collection mode, the vent (120), the first ventilation unit and the air inlet (221) are connected in sequence to form a dust collection inlet air duct of the vacuum cleaner (A), and the air outlet (222), the second ventilation unit and the air outlet (3210) are connected in sequence to form the dust collection outlet air duct.

5. The cleaning device according to claim 4, characterized in that The dust cup assembly (3) comprises a filter assembly (31) and a filter bracket (32); the filter bracket (32) comprises a connecting cylinder (321) and a connecting plate (322) arranged on the top of the connecting cylinder (321); the filter assembly (31) is installed below the connecting plate (322); and the connecting plate (322) is provided with a plurality of air flow openings (3210); The outer sleeve (42) is arranged inside the connecting cylinder (321), and the connecting cylinder (321) is provided with at least one air passage (3221), and the air passage (3221) is communicated with the ventilation port (120).

6. The cleaning device according to claim 5, characterized in that The outer sleeve (42) is tightly arranged in the connecting cylinder (321); The inner wall of the connecting cylinder (321) is provided with at least one groove (3222) extending in the axial direction, and the groove (3222) and the air passage (3221) are arranged along the circumference of the connecting cylinder (321); When the vacuum cleaner (A) is in a vacuuming mode, the groove (3222) connects the airflow port (3210) and the first ventilation unit; when the vacuum cleaner (A) is in a dust collecting mode, the groove (3222) connects the second ventilation unit and the airflow port (3210).

7. The cleaning device according to claim 5, characterized in that The air flow opening (3210) comprises a main air flow opening (3211) and a plurality of dust collecting air flow openings (3212), wherein the main air flow opening (3211) is opened at the central part of the connecting plate (322), and the plurality of dust collecting air flow openings (3212) surround the main air flow opening (3211) in a circumferential direction; The dust cup assembly (3) further comprises a plurality of blocking blocks (46) protruding downward from the bottom plate (43), wherein the blocking blocks (46) are arranged corresponding to the dust collecting air flow outlets (3212); When the vacuum cleaner (A) is in the dust collection mode, the blocking block (46) blocks the plurality of dust collection air flow outlets (3212); when the vacuum cleaner (A) is in the dust collection mode, the plurality of dust collection air flow outlets (3212) are connected to the second ventilation unit.

8. The cleaning device according to claim 4, characterized in that The air duct switching member (4) further comprises a retaining ring (44) arranged on the top of the outer sleeve (42), and the top of the dust cup assembly (3) abuts against the lower end surface of the retaining ring (44); The outer circumference of the retaining ring (44) is provided with a manual operating portion (45) protruding outwards, and the housing (1) is provided with a long strip of movable opening, the manual operating portion (45) is arranged in the movable opening and extends out of the movable opening, and the air duct switching member (4) is rotated by pushing the manual operating portion (45) to move along the movable opening.

9. The cleaning device according to any one of claims 1 to 8, characterized in that: The bottom of the housing (1) is provided with a movable plate (110) which is locked in a vacuuming mode, and the base (B) is provided with a rear trigger member, and when the vacuum cleaner (A) is placed on the base (B), the trigger member triggers the movable plate (110) to open.

10. The cleaning device according to any one of claims 1 to 8, characterized in that The base (B) further comprises a mounting shell (7), wherein the mounting shell (7) comprises an air collecting portion (71) extending from the starting end of the return air duct (70) to the outer wall of the dust collecting box (10); The dust collecting box (10) is arranged in the installation shell (7), and the dust collecting box (10) is provided with a plurality of air outlets (100) arranged at intervals within the range surrounded by the air collecting portion (71).

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