A dust extractor and cleaning apparatus

Abstract

The application discloses a dust collector and cleaning equipment. The dust collector comprises a body assembly, a dust cup assembly and a fan assembly. The dust cup assembly comprises a filter assembly. The fan assembly is rotatably connected with the body assembly, and at least two independent air ducts are formed between the fan assembly and the dust cup assembly. A pushing assembly is arranged on the dust collector. When the dust collector is placed on a base station, the pushing assembly is triggered to drive the fan assembly to rotate to realize air duct switching. After the air duct switching is realized by the pushing of the pushing assembly, the fan assembly blows air to the dust cup assembly through the switched air duct to connect the dust cup body and the base station, and to perform self-cleaning of the filter assembly and the dust cup body, and self-dust collection of dust in the dust cup body and the filter assembly into the base station. On the one hand, the structure is simple and the operation is convenient. On the other hand, the positive pressure self-cleaning and self-dust collection are adopted, the self-cleaning and self-dust collection effects are better, no suction device needs to be added in the base station, the cost is lower, and the weight is lighter.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, and more specifically to a vacuum cleaner and cleaning equipment. Background Technology

[0002] Handheld vacuum cleaners are increasingly popular in households due to their compact size, portability, and lack of power cord constraints. Handheld vacuum cleaners typically use a fan to create negative pressure, sucking up debris and other impurities into a dustbin. The dustbin has a small capacity, and the dustbin needs to be opened to empty it after use. However, this process often scatters dust, causing secondary pollution. To address these issues, base stations with dust collection functions have emerged on the market, collecting dust from the dustbin and preventing it from being scattered. For example, Chinese patent document CN218651617U discloses a dust collection system for a vacuum cleaner base station, including a base station and a vacuum cleaner. The base station includes a base, a support rod, and a support component. The support component has a dust collection chamber. The base has a dust collection bag and a negative pressure component. The vacuum cleaner includes a hand handle and a dust collection cup. The dust collection cup has a dust cup body and a dust cup bottom cover. The dust cup body has a release button to control the rotation of the dust cup bottom cover to open or close. When the vacuum cleaner is placed on the base station, the trigger part on the base station triggers the release button on the bottom cover, the dust cup bottom cover opens, and the negative pressure component draws in, creating a negative pressure inside the chamber. The dust inside the dust cup body automatically falls and is collected in the base station, achieving the purpose of self-collection of dust. This conventional cleaning equipment solution uses two suction devices. One device is located inside the vacuum cleaner, creating negative pressure in the dust cup during vacuuming to achieve the purpose of dust extraction. The other device creates negative pressure in the dust collection chamber of the base station during dust collection, thus collecting the dust from the dust cup. This approach is costly, and because the airflow passes through a long suction channel at the front, there is significant airflow loss, resulting in a smaller overall effective airflow and poor dust collection. Furthermore, the overall weight of the cleaning equipment makes it difficult for customers to move. In addition, the dust cup of a vacuum cleaner typically contains a filtration component for separating dust particles, such as a conventional cyclone filter. As a core component of the vacuum cleaner, this filtration component accumulates a lot of dust and debris after frequent use, leading to a decrease in filtration efficiency. Cleaning is necessary to improve its filtration effect, but cleaning has always been a major problem for consumers. The earliest technology typically involved disassembling the filter assembly and manually washing and blowing it. However, this method is cumbersome and inefficient. During hand washing, dust is close to the person, making it easy for it to enter the respiratory system. Therefore, it cannot meet current market demands. To solve this problem, various self-cleaning filter structures have emerged on the market, which can be broadly divided into contact cleaning structures and non-contact cleaning structures. Contact cleaning structures use scraper strips, brush strips, scrapers, etc., to directly act on the filter screen, while non-contact structures use methods such as tapping vibration or negative pressure suction.Contact cleaning methods typically operate simultaneously with the vacuum cleaner's startup, preventing users from selecting the self-cleaning time. They are also noisy, impacting the user experience, and their cleaning effectiveness is often poor. Hard cleaning components like scrapers can easily damage the filter during cleaning, affecting its filtration efficiency or even causing it to fail. Non-contact solutions are more commonly used in existing vacuum cleaners. For example, the filter self-cleaning device and vacuum cleaner disclosed in Chinese patent publication CN116019386A include a housing, power source, transmission assembly, cam, striking element, and elastic element. The striking element consists of a contact part and a striking part. The contact part contacts the cam, and the striking part strikes the object connected to the filter. The striking causes the filter to vibrate, separating dust from the filter screen, thus cleaning the filter. However, this solution has two drawbacks: firstly, the filter self-cleaning device has a very complex structure, leading to high design costs; secondly, the striking element can only clean the filter screen and cannot clean dust adhering to the inner wall of the dust cup. However, negative pressure suction solutions have several drawbacks. First, they require additional suction devices, leading to higher costs. Second, because the suction airflow needs to pass through a long suction channel at the front end, airflow loss is significant, resulting in a small amount of airflow actually entering the dust cup to backwash the filter screen, thus hindering the filter's self-cleaning effect. Therefore, this invention was developed to address these issues. Summary of the Invention

[0003] In view of at least one of the above-mentioned technical problems, the present invention aims to provide a vacuum cleaner and cleaning equipment.

[0004] The technical solution of this invention is:

[0005] The purpose of this invention is to provide a vacuum cleaner, which includes a body assembly, a dust cup assembly, and a fan assembly. The dust cup assembly includes a dust cup body and a filter assembly disposed within the dust cup body. The fan assembly is used to generate negative pressure suction within the dust cup body during vacuuming operations. The fan assembly is rotatably connected to the body assembly, and at least two independent air ducts are formed between the fan assembly and the dust cup assembly.

[0006] The vacuum cleaner is equipped with a push component that, when placed on the base station, drives the fan assembly to rotate to achieve airflow switching;

[0007] After the fan assembly is pushed by the pushing assembly to switch the air duct, it blows air forward into the dust cup assembly through the switched air duct to connect the dust cup body and the base station, and performs the self-cleaning operation of the filter assembly and the dust cup body, as well as the self-collection operation of guiding the dust in the dust cup body and the filter assembly into the base station.

[0008] Another object of the present invention is to provide a cleaning device, including a vacuum cleaner and a base station, wherein the vacuum cleaner is any of the vacuum cleaners described above, and the base station has a first trigger element that triggers the pushing assembly to drive the fan assembly to rotate in order to achieve air duct switching when the vacuum cleaner is placed on the base station.

[0009] Compared with the prior art, the advantages of the present invention are:

[0010] The vacuum cleaner of the present invention has a simple structure and is easy to operate. On the other hand, it uses positive pressure blowing to self-clean the filter components and guide the dust into the base station for self-collection. Compared with the prior art, which uses negative pressure suction to achieve self-cleaning and self-collection of the filter components, the air does not need to pass through the front suction channel, resulting in less air loss and better self-cleaning and self-collection effects. Moreover, it does not require an additional suction device in the base station, resulting in lower cost and lighter weight. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0012] Figure 1 This is a three-dimensional structural diagram of a cleaning device with dust suction, self-cleaning and dust collection functions according to an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of a cleaning device with suction, self-cleaning and dust collection functions according to an embodiment of the present invention, showing the base station facing forward and the brush head assembly facing backward.

[0014] Figure 3 This is an exploded structural diagram of the dust cup assembly and fan assembly of a cleaning device with dust suction, self-cleaning and dust collection functions according to an embodiment of the present invention.

[0015] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0016] Figure 5 for Figure 3 Enlarged view of part B in the middle;

[0017] Figure 6 This is a three-dimensional structural schematic diagram of the fan assembly of a cleaning device with dust suction, self-cleaning and dust collection according to an embodiment of the present invention (where 6(a) is a schematic diagram with the front cover facing forward and 6(b) is a schematic diagram with the rear cover facing forward).

[0018] Figure 7 This is a schematic diagram of the structure of the fan bracket of a cleaning device with dust suction, self-cleaning and dust collection according to an embodiment of the present invention (where 7(a) is a perspective view, 7(b) is a top view and 7(c) is a side view).

[0019] Figure 8This is a cross-sectional structural diagram of the main body (excluding the brush head assembly) of a cleaning device with suction, self-cleaning and dust collection functions according to an embodiment of the present invention in suction mode.

[0020] Figure 9 for Figure 8 Enlarged view of a section in the middle C;

[0021] Figure 10 This is a cross-sectional structural diagram of a cleaning device (excluding brush head assembly) with suction, self-cleaning and dust collection functions according to an embodiment of the present invention in positive pressure self-dust collection mode.

[0022] Figure 11 for Figure 10 A magnified view of part D in the image;

[0023] Figure 12 This is a cross-sectional structural diagram of a base station (excluding the support body) of a cleaning device with dust suction, self-cleaning and dust collection functions according to an embodiment of the present invention.

[0024] Figure 13 This is a cross-sectional structural diagram of a base station (including a support body) of a cleaning device with dust suction, self-cleaning and dust collection functions according to an embodiment of the present invention. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0026] A vacuum cleaner and cleaning device according to an embodiment of the present invention, see [link to relevant documentation]. Figures 1 to 13The system includes a body assembly 10, a dust cup assembly 30, and a fan assembly 20. The dust cup assembly 30 includes a dust cup body 31 and a filter assembly 32 disposed within the dust cup body 31. The fan assembly 20 is used to generate negative pressure suction within the dust cup body 31 during vacuuming operations; that is, during vacuuming operations, the airflow within the dust cup body 31 flows from the dust cup body 31 to the fan assembly 20. In this embodiment of the invention, the fan assembly 20 is rotatably connected to the body assembly 10, and at least two independent air ducts are connected between the fan assembly 20 and the dust cup assembly 30. For ease of description and distinction, one air duct is used for vacuuming operations (i.e., the vacuuming air duct), and the other air duct is used for dust collection and self-cleaning operations when the vacuum cleaner is placed on the base station 40 (i.e., in self-dust collection mode) (i.e., the self-dust collection air duct). Specifically, the switching between the two independent air ducts is achieved by triggering the fan assembly 20 to rotate when the vacuum cleaner is placed on the base station 40. Correspondingly, the vacuum cleaner is equipped with a push component that is triggered and acts on the fan assembly 20, causing the fan assembly 20 to rotate relative to the body assembly 10. The switching of the air duct by the push component specifically involves the fan assembly 20 switching from the suction air duct to the self-collecting air duct, and then blowing air in the forward direction into the dust cup assembly 30 through the switched air duct, i.e., the self-collecting air duct, to connect the dust cup body 31 and the base station 40, and to perform the self-cleaning operation of the filter assembly 32 and the dust cup body 31, as well as the self-collecting operation of guiding the dust in the dust cup body 31 and the filter assembly 32 into the base station 40. In this embodiment of the invention, a fan assembly 20 is rotatably connected to the body assembly 10. At least two independent air ducts are provided between the fan assembly 20 and the dust cup assembly 30. A pushing component is provided inside the vacuum cleaner. After the vacuum cleaner is placed on the base station 40, the pushing component is triggered to act on the fan assembly 20, causing the fan assembly 20 to rotate and switch the air ducts. On the one hand, the structure is simple and easy to operate. On the other hand, positive pressure dust blowing is used for the self-cleaning of the filter assembly 32 and the self-collection of dust into the base station 40. Compared with the negative pressure suction used in the prior art to achieve the self-cleaning and self-collection of the filter assembly 32, the air does not need to pass through the front suction channel, the air loss is small, the self-cleaning and self-collection effect is better, and there is no need to add a suction device inside the base station 40, which reduces the cost and lightens the weight.

[0027] It should be noted that the actuation component can be triggered manually, for example, by adding a triggering device, such as a button, push button, or knob, connected to the actuation component on the outer wall of the dust cup body 31. Alternatively, it can be triggered automatically, for example, by adding a triggering device that can act on the actuation component to the base station 40. According to some preferred embodiments of the present invention, a triggering device is added to the base station 40, such as a vertically upward-protruding rod-shaped first trigger member 45 as shown in the figure, to achieve automatic triggering of air duct switching when the vacuum cleaner is placed on the base station 40, making operation more convenient.

[0028] like Figure 2and Figures 10 to 11 As shown, the body assembly 10 includes a main body having an air inlet channel, a dust extraction and exhaust port 12, and a dust blowing air inlet 13. The main body has a handle structure (not shown), and the main body contains a mounting cavity (not shown) for mounting the fan assembly 20. The mounting cavity also contains a fan bracket 14 for mounting the fan assembly 20. Figure 3 and Figure 7 As shown in (7a), the fan support 14 is inverted U-shaped. The fan assembly 20 has at least one air inlet and at least one air outlet, and the fan bracket 14 also has at least one air inlet and at least one air outlet. As an exemplary embodiment, such as in a vacuuming operation, one air inlet on the fan bracket 14 is connected to one air inlet on the fan assembly 20, and one air outlet on the fan assembly 20 is connected to one air outlet on the fan bracket 14 to form an air duct that is connected to the vacuum exhaust port 12 to discharge the vacuuming gas outside the vacuum cleaner body. Other air inlets and outlets on the fan assembly 20 and the fan bracket 14 are closed or blocked to prevent air from entering or exiting. In self-cleaning and self-dust collection operations, the air inlets and outlets that are closed or blocked in the vacuuming operation are connected to the dust blowing inlet 13 to blow the gas entering the dust blowing inlet 13 into the dust cup assembly 30 under positive pressure. The air inlets and outlets connected in the vacuuming operation are closed or blocked to prevent air from entering or exiting. In other words, the airflow pattern changes during vacuuming, self-cleaning, and self-dust collection operations; it's not fixed. More specifically, for example... Figure 6 As shown, the fan assembly 20 has a first air inlet 221, a first air outlet 222, and a first air outlet 231. Preferably, as shown... Figure 3 As shown, the fan assembly 20 of this embodiment includes a fan body 21 and a front fan cover 22 and a rear fan cover 23 covering the fan body 21. A first air inlet 221 and a first air outlet 222 are formed on the front fan cover 22, and a first air outlet 231 is formed on the rear fan cover 23. Figure 7As shown, the fan bracket 14 has a second air inlet 141, a second air outlet 142, and a third air inlet 143. Preferably, the second air inlet 141, the second air outlet 142, and the third air inlet 143 are arranged sequentially and at intervals along the arc direction of rotation of the fan assembly 20 on the fan bracket 14. For dust collection operations, the second air inlet 141, the first air inlet 221, and the first air outlet 231 are sequentially connected to form a dust collection duct; for self-cleaning and self-dust collection operations, the third air inlet 143, the first air inlet 221, the first air outlet 222, and the second air outlet 142 are sequentially connected to form a self-dust collection duct. As an alternative embodiment, the fan assembly 20 has a first air inlet 221 and a first air outlet 222. The fan bracket 14 has a second air inlet 141, a second air outlet 142, and a third air inlet 143. For vacuuming operations, the second air inlet 141, the first air inlet 221, and the first blower 222 are sequentially connected to form a vacuuming air duct. For self-cleaning and self-dust collection operations, the third air inlet 143, the first air inlet 221, the first blower 222, and the second blower 142 are sequentially connected to form a self-dust collection air duct. In other words, the first air outlet 231 is not opened on the fan assembly 20. At this time, it is only necessary to adjust the position of the vacuum exhaust port 12, which serves as the exhaust air for vacuuming operations, on the body assembly 10.

[0029] like Figure 3 As shown, the dust cup assembly 30 includes a dust cup body 31, a filter assembly 32 disposed within the dust cup body 31, a bottom cover plate 33 disposed at the bottom of the dust cup body 31, and a movable cover plate 34 movably connected, for example, hinged to an opening on the bottom cover plate 33. Preferably, it also includes a sealing element, such as a sealing ring 36, disposed on the opening of the bottom cover plate 33 for sealing the movable cover plate 34. It should be noted that a locking element 35 is provided inside the bottom cover plate 33, which is used to lock the movable cover plate 34 in the natural state, i.e., when not in operation, and in the dust collection mode. In order to enable the movable cover plate 34 to open automatically in the positive pressure self-dust collection mode so that the interior of the dust cup body 31 and the interior of the base station 40 can be connected, such as... Figure 12 As shown, a second trigger 46 for triggering the unlocking of the locking element 35 is preferably provided on the base station 40. As an alternative embodiment, the second trigger 46 can also be provided on the outer wall of the dust cup body 31. The specific structure of the locking element 35 is not described in detail or limited, and can be any conventional locking element 35. As an exemplary embodiment, such as Figure 3 and Figures 8 to 9As shown, the locking element 35 includes a locking body and a biasing element 351. In the installed state, the biasing element 351 applies a biasing force to the locking body in the center direction toward the opening of the bottom cover plate 33, so that the locking element 35 can lock the movable cover plate 34 covering the opening of the bottom cover plate 33. The side of the locking body facing the opening of the bottom cover plate 33 has a hook portion 353, and the end connected to the biasing element 351 has a barb portion (inverted triangle). When the movable cover plate 34 is closed, the hook portion 353 can hook onto the protruding cover edge 341 (matching the hook portion 353) on the inner end face of the movable cover plate 34 under the biasing force of the biasing element 351. The bottom cover 33 also has a first insertion hole (not shown) for the second trigger 46 to be inserted. When the vacuum cleaner body is placed on the base station 40, the second trigger 46 is inserted into the first insertion hole and pushes the barb of the locking body so that the locking body can move upward a certain distance so that the hook part 353 separates from the cover edge 341. Then, due to the action of the inclined surface on the barb part, the locking body will move towards the center of the opening away from the bottom cover 33 and overcome the bias force of the biasing member 351 so that the hook part 353 is completely separated from the movable cover 34. Finally, the movable cover 34 is opened under the positive pressure in the dust cup body 31. Preferably, the locking member 35 also includes a locking unlocking push rod 352 that is movably connected to the bottom cover 33 along the axial direction of the dust cup body 31 and protrudes out of the first insertion hole of the bottom cover 33 or is flush with the bottom end of the first insertion hole when the movable cover 34 is closed in the vacuuming mode. Figure 3 and Figures 8 to 9 As shown, the top of the latch unlocking push rod 352 is inverted triangular. When the latch unlocking push rod 352 is subjected to the upward pushing force of the second trigger 46, it pushes the barb of the latch body. Specifically, when the vacuum cleaner body is placed on the base station 40, the latch unlocking push rod 352 is pushed upward along the first insertion hole by the upward pushing force of the second trigger 46, thereby unlocking the latch 35 so that the movable cover 34 can be opened under positive pressure. For the second trigger 46, it is preferably a key-like component such as an upwardly protruding push rod provided on the top cover of the base station 40. It should be noted that a support frame 15 is provided on the side of the dust cup body 31 facing the fan assembly 20. The support frame 15 is used to support the fan assembly 20 and the filter assembly 32, and the support frame 15 has multiple through holes so that the airflow in the dust cup assembly 30 can enter the air inlet of the fan assembly 20 through the through holes in the dust suction mode. Similarly, in the positive pressure self-dust collection mode, the airflow blown out of the air outlet of the fan assembly 20 can enter the dust cup assembly 30 through the through holes.

[0030] Some preferred embodiments of the present invention, such as Figures 1 to 2 and Figures 4 to 5As shown, the pushing assembly includes a first pushing component 37 disposed on the dust cup body 31, which can be triggered by a first trigger 45 to move towards the fan assembly 20 and reset in the opposite direction after the trigger is released; and a second pushing component disposed on the fan bracket 14, which can be triggered by the displacement of the first pushing component 37 to move away from the dust cup assembly 30 and reset in the opposite direction after the trigger is released. The end of the second pushing component away from the first pushing component 37 is pivotally connected to the fan assembly 20. More specifically, the first pushing component 37 includes a first pushing member 371, such as a push rod or push plate, movably disposed within the side wall of the dust cup body 31 and extending along the axial direction of the dust cup body 31, and a first tension spring 372, one end of which is connected to the first pushing member 371 and the other end of which is connected to the bottom cover plate 33. The second pushing assembly includes a second pushing member 16 movably disposed on the fan bracket 14 and a second tension spring 160, one end of which is connected to the second pushing member 16 and the other end of which is connected to the fan bracket 14. The bottom cover plate 33 has a second insertion hole or socket for the second trigger 46 to push the first pushing component 37 upward. It should be noted that in this embodiment, the first pushing component 371 and the second pushing component 16 are independent, i.e., not connected together. They only come into contact or abut each other during the process of switching the air duct when the vacuum cleaner body is placed on the base station 40. In order for the first pushing component 371 to trigger the second pushing component 16 during displacement after being triggered by the second trigger 46, the second pushing component 16 should be on the path of displacement of the first pushing component 371. The second trigger 46 is a conventional push rod or similar component. In this embodiment, when the vacuum cleaner body is placed on the base station 40, the second trigger 46 pushes the first pushing component 37 upward. The first pushing component 37 moves upward and pushes against the second pushing component. The second pushing component also moves upward and rotates around the pivot axis between the second pushing component 16 and the fan assembly 20, thereby driving the fan assembly 20 to rotate and achieve air duct switching. Preferably, the second pushing member 16 is a flat plate, and a first hook 161 with an upward bend for connection of the second tension spring 160 is provided on the side wall of the second pushing member 16 facing away from the fan assembly 20. Correspondingly, a second hook 144 with a downward bend is provided on the fan bracket 14 for connection of the other end of the second tension spring 160. Preferably, the first pushing member 371 is a push rod or push plate, such as... Figure 3 and Figure 4As shown, the first pusher 371 has a first connecting part 3711 for one end of the first tension spring 372 to be connected, specifically for hooking, and the bottom cover plate 33 has a second connecting part 331 for the other end of the first tension spring 372 to be hooked. Both the first connecting part 3711 and the second connecting part 331 shown in the figure are connecting holes. The first connecting part 3711 and the second connecting part 331 can also be hook-like structures. As an alternative embodiment, the first pusher 371 and the second pusher 16 are connected together to form a linkage structure, that is, the push assembly can also be a linkage linkage assembly. In this case, it is not necessary to set multiple tension springs, such as tension springs; only one tension spring is needed. It should be noted that the linkage assembly can be just one linkage or multiple linkages. As another alternative embodiment, the push assembly can also be a meshing transmission assembly, such as a rack and pinion transmission structure. It should be noted that, as Figures 8 to 11 As shown, the second pusher 16 is positioned at the dust inlet 13. During dust collection, the second pusher 16 blocks the dust inlet 13. The air that is filtered by the filter assembly 32 enters the fan assembly 20 and exits through the air outlet of the fan assembly 20, and is discharged through the dust exhaust port 12. During self-cleaning and self-dust collection operations, the second pusher 16 moves upward to open the dust inlet 13.

[0031] According to some preferred embodiments of the present invention, after the vacuum cleaner body is placed on the base station 40, the air duct switches from a suction air duct to a self-collecting air duct, and the fan body 21 automatically starts. The automatic start-up of the fan body 21, its automatic shutdown after completing self-cleaning and dust collection operations, and subsequent charging are all achieved through a micro switch (not shown). The micro switch and the fan body 21 can be electrically connected through a control module, such as a control circuit. The micro switch is located on the fan assembly 20 or the push assembly, or at the connection point of the two. The micro switch is a conventional micro switch in the prior art. When the fan assembly 20 rotates to switch the air duct into position, the micro switch is triggered by the squeezing force of the push assembly or the fan assembly 20, thereby turning on the circuit of the fan assembly 20 and starting the fan assembly 20. The base station 40 is also provided with a charging interface for charging the vacuum cleaner body. Correspondingly, the vacuum cleaner body is provided with a charging port. When the vacuum cleaner body is placed on the base station 40, the charging interface and the charging port are electrically connected. Preferably, the vacuum cleaner body does not immediately execute the charging program. Instead, it first triggers the self-cleaning and dust collection program via a microswitch and performs self-cleaning and dust collection operations for a preset time, such as 1-20 seconds. After the preset time is reached, the fan body 21 is turned off, for example, by setting a timing circuit (the control device has a logic circuit that determines whether the self-cleaning and dust collection time has reached the self-cleaning and dust collection time set by the timing circuit; this logic circuit and timing circuit are conventional control circuits, which are easily known and implemented by those skilled in the art) to turn off the fan assembly 20 after the preset time. The control device then controls the vacuum cleaner body to switch to the charging program. The cleaning device of this embodiment of the invention can switch between self-cleaning and charging by setting a microswitch, eliminating the need for manual operation of self-cleaning and charging, making operation simple.

[0032] For filter assembly 32, it can be a conventional cyclone filter with HEPA filter element, and the specific structure is not described or limited.

[0033] This invention also provides a cleaning device, including a vacuum cleaner and a base station 40. The vacuum cleaner is the same as described in the above embodiments. Preferably, for the base station 40, [the device is] as follows: Figures 12 to 13 As shown, the base station 40 has a housing cavity 41 inside, and a dust bag 42 is connected to the air outlet of the housing cavity 41. A dust collection and exhaust port 44, which communicates with the interior of the housing cavity 41 and the outside, is opened on the side wall of the base station 40. An air outlet filter 43, such as a plate-shaped or sheet-shaped HEPA filter, is also provided between the air outlet of the housing cavity 41 (i.e., the port connected to the dust bag 42) and the dust collection and exhaust port 44. Preferably, the air inlet of the housing cavity 41 is also... Figure 12The area of ​​the upper opening of the storage cavity 41 shown is not less than the air inlet area of ​​the fan assembly 20, and the area of ​​the dust collection exhaust port 44 is not less than 1.5 times the area of ​​the air inlet of the fan assembly 20, i.e., the first air inlet 221. It should be noted that this multiple cannot be too large or too small; it is an ideal multiple obtained by the applicant through optimized design. If it is too large, it will not be conducive to forming an effective blowing force within the dust cup body, i.e., it will not be conducive to the self-cleaning of the dust cup assembly. If it is too small, it will not be conducive to dust collection within the base station. The volume of the storage cavity 41 is not less than the effective volume of the dust cup body 31 that can hold garbage. Compared with the existing technology, the air inlet area of ​​the storage cavity 41 of the base station 40 is larger, resulting in better dust collection. Optionally, such as... Figure 13 As shown, the base station 40 also includes a support body 47, and a plurality of foldable or openable support legs 48 are provided circumferentially spaced on the base at the bottom of the support body 47. A side cover (not shown) may also be optionally provided on the outer surface of the base station 40 corresponding to the outer side of the air outlet filter 43, which can be opened to allow the internal air outlet filter 43 to be removed for cleaning or replacement. As an alternative embodiment, the base station 40 may not have the first trigger 45 and / or the second trigger 46. Correspondingly, components performing the same functions as the first trigger 45 and / or the second trigger 46 can be directly mounted on the dust cup assembly 30 or the body assembly 10, and the corresponding triggering action can be performed manually.

[0034] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A dust collector comprising a main body assembly, a dust cup assembly including a dust cup body and a filter assembly provided in the dust cup body, and a blower assembly for generating a negative pressure suction force in the dust cup body during a dust collection operation, characterized in that, The fan assembly is rotatably connected to the body assembly, and at least two independent air ducts are formed between the fan assembly and the dust cup assembly; The vacuum cleaner is equipped with a push component that, when placed on a base station, is triggered to drive the fan assembly to rotate in order to switch the air duct. After the fan assembly is pushed by the pushing assembly to switch the air duct, it blows air into the dust cup assembly through the switched air duct to connect the dust cup body and the base station, and performs the self-cleaning operation of the filter assembly and the dust cup body, as well as the self-collection operation of guiding the dust in the dust cup body and the filter assembly into the base station. When the vacuum cleaner is placed on the base station, the pushing component is triggered by a first trigger on the base station to drive the fan assembly to rotate so as to switch the air duct. The body assembly includes an air inlet channel, a dust extraction exhaust port, and a dust blowing air inlet. A fan bracket for rotating the fan assembly is fixed inside the body assembly. The bottom of the dust cup body has a bottom cover plate with a movable cover plate that is locked in the dust extraction state and unlocked when placed on a base station. The fan assembly has at least one air inlet and at least one air outlet, and the fan bracket also has at least one air inlet and at least one air outlet. During dust extraction, the fan bracket... One air inlet on the frame is connected to one air inlet of the fan assembly, one air outlet of the fan assembly is connected to one air outlet of the fan bracket, and the air outlet is connected to the dust extraction exhaust port. Other air inlets and outlets on the fan assembly and the fan bracket are closed or blocked, preventing air from entering or exiting. During self-cleaning and self-dust collection operations, the air inlets and outlets that are closed or blocked during dust extraction are connected, and the air outlet is connected to the dust blowing air inlet. During dust extraction operations, the connected air inlets and outlets are closed or blocked, preventing air from entering or exiting. The pushing assembly includes a first pushing assembly disposed on the dust cup body that can be triggered by a first trigger to move toward the fan assembly and reset in the opposite direction after the trigger is released, and a second pushing assembly disposed on the fan bracket that can be triggered by the displacement of the first pushing assembly to move away from the dust cup assembly and reset in the opposite direction after the trigger is released, wherein the end of the second pushing assembly away from the first pushing assembly is pivotally connected to the fan assembly. The first pushing component includes a first pushing member that is movably disposed in the side wall of the dust cup body and extends along the axial direction of the dust cup body, and a first tension spring that is connected at one end to the first pushing member and at the other end to the bottom cover plate; The second pushing assembly includes a second pushing member movably mounted on the wind turbine support and a second tension spring connected at one end to the second pushing member and at the other end to the wind turbine support.

2. The dustsucker according to claim 1, characterized in that, The first pushing member is a push rod, which has a first connecting part for the first tension spring to connect to, and the bottom cover plate has a second connecting part for the first tension spring to connect to; The second pusher is a flat plate, and its wall facing away from the fan assembly is provided with a first hook for the second tension spring to connect to, and the fan bracket is provided with a second hook for the second tension spring to connect to.

3. The vacuum cleaner according to claim 1, characterized in that, The actuating component is one or more linked linkage structures or meshing toothed transmission structures.

4. The dustsucker according to any one of claims 1 to 3, characterized in that A micro switch is provided at the connection point between the fan assembly and the push assembly. When the air duct is switched into place, the micro switch is triggered and connected to the circuit of the fan assembly to start the fan assembly to perform self-cleaning and self-dust collection operations.

5. A cleaning apparatus comprising a suction cleaner and a base station, characterised in that, The vacuum cleaner is the vacuum cleaner according to any one of claims 1-4, and the base station has a first trigger element that triggers the pushing component to drive the fan component to rotate to achieve air duct switching when the vacuum cleaner is placed on the base station.

6. A cleaning apparatus as claimed in claim 5, wherein The bottom of the dust cup body is provided with a bottom cover plate, and the bottom cover plate is provided with a movable cover plate. The movable cover plate is locked to the bottom cover plate during the dust collection operation by a locking fastener provided on the bottom cover plate. The base station is also provided with a second trigger that triggers the unlocking of the movable cover when the vacuum cleaner is placed on the base station. After the movable cover is unlocked, it is blown open by the positive pressure airflow from the fan assembly to connect the dust cup body to the base station.

7. A cleaning apparatus as claimed in claim 5 or 6, wherein, The base station is also equipped with a storage cavity, and the air outlet of the storage cavity is connected to a dust bag. The base station also has a dust collection and exhaust port on its outer wall that connects the storage cavity to the outside. The inner side of the dust collection and exhaust port is also provided with an air filter.

8. A cleaning apparatus as claimed in claim 7, wherein, The area of ​​the air inlet of the storage cavity is not less than the air inlet area of ​​the fan assembly under self-cleaning and self-dust collection operations, the area of ​​the dust collection exhaust port is not less than 1.5 times the air inlet area of ​​the fan assembly under self-cleaning and self-dust collection operations, and the volume of the storage cavity is not less than the effective volume of the dust cup body that can hold garbage.

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