Dust cup assembly and vacuum cleaner

Abstract

Disclosed in the present application are a dust cup assembly and a vacuum cleaner. The dust cup assembly comprises a dust cup body (100), and a first cyclone separator (200) and at least one second cyclone separator (300) which are arranged in the dust cup body (100). The dust cup body (100) is provided with an intake channel (110), an exhaust channel (120), a first dust collection cavity (130) and a second dust collection cavity (140); the first cyclone separator (200) comprises a first housing (210), a first cyclone separation cavity (230) is defined in the first housing (210), and the first housing is provided with a first air inlet (212), a first dust discharge port (211) and a first air outlet (221); and the second cyclone separator (300) is provided with a second air inlet (312), a second dust discharge port (311), and a second air outlet (321), wherein the first dust collection cavity (130) comprises at least a space between an outer peripheral side of the first housing (210) and an inner peripheral wall of the dust cup body (100).

Description

Dust cup assembly and vacuum cleaner

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420042616.4 filed on January 8, 2024, entitled “Dust cup assembly and vacuum cleaner.” The entire contents of the above patent application are incorporated herein by reference. Technical Field

[0003] The present application relates to the technical field of vacuum cleaners, and in particular to a dust cup assembly and a vacuum cleaner. Background Art

[0004] In order to improve the efficiency of dust-gas separation, existing dust cups are usually provided with at least two-stage separation systems and adopt a spiral separation method. Among them, the first-stage separation system includes a mesh filter, and a dust collecting space is provided below the mesh filter. At the same time, the mesh filter needs to be arranged in the center so that the dust-laden air spirals down around the periphery of the mesh filter. Under the action of centrifugal force, dust and gas separation is achieved, and the dust falls into the dust collecting space below. The air further enters the mesh filter for secondary separation. However, in the first-stage separation system of this structure, the space between the wall of the dust cup and the mesh filter can only be used as a spiral space for the dust-laden air. This part of the space cannot be used to store dust, resulting in a small dust collecting capacity of the dust cup. At the same time, since the dust-laden air rotates directly above the dust collecting space, when a lot of dust accumulates in the dust collecting space, the dust in the dust collecting space will be lifted up, which can easily cause the mesh filter to be blocked, resulting in a decrease in the suction power of the vacuum cleaner and a decrease in the dust-gas separation efficiency.

[0005] Summary of the Invention

[0006] The present application aims to at least partially solve one of the technical problems existing in the prior art. To this end, the present application proposes a dust cup assembly and a vacuum cleaner having the above-mentioned dust cup assembly.

[0007] According to the first aspect of the embodiment of the present application, the dust cup assembly includes a dust cup body, which is provided with an air inlet channel, an air outlet channel, a first dust collecting chamber and a second dust collecting chamber; a first cyclone separator is arranged in the dust cup body, the first cyclone separator includes a first shell, the first shell defines a first cyclone separation chamber and is provided with a first air inlet, a first dust outlet and a first air outlet, the first cyclone separation chamber is connected to the air inlet channel through the first air inlet, and the first cyclone separation chamber is connected to the first dust collecting chamber through the first dust outlet; and at least one second cyclone separator is arranged in the dust cup body, the second cyclone separator is provided with a second air inlet, a second dust outlet and a second air outlet, the second air inlet is connected to the first air outlet, the second dust outlet is connected to the second dust collecting chamber, and the second air outlet is connected to the air outlet channel; wherein, the first dust collecting chamber at least includes the space between the outer peripheral wall of the first shell and the inner peripheral wall of the dust cup body.

[0008] According to some embodiments of the present application, the central axis of the first shell deviates from the central axis of the dust cup body.

[0009] According to some embodiments of the present application, there are multiple second cyclone separators, and the multiple second cyclone separators are arranged around the central axis of the first shell.

[0010] According to some embodiments of the present application, the air outlet channel and multiple second cyclone separators are located below the first shell, and the air outlet channel is located on the side of the second cyclone separator close to the central axis of the first shell, and the first air outlet is located at the bottom of the first shell.

[0011] According to some embodiments of the present application, a side circumferential wall of the first shell is attached to the inner circumferential wall of the dust cup body.

[0012] According to some embodiments of the present application, the air inlet channel is located on a side close to the fitting point between the dust cup body and the first shell.

[0013] According to some embodiments of the present application, a plurality of second cyclone separators are arranged in an arc shape around the central axis of the first shell, the second dust collecting chamber is located below the plurality of second cyclone separators, and the first dust collecting chamber also includes a partial space in the dust cup body located below the first shell.

[0014] According to some embodiments of the present application, a plurality of second cyclone separators are arranged in a circle around the central axis of the first shell, the air outlet channel is provided between the plurality of second cyclone separators, the second dust collecting chamber is located below the plurality of second cyclone separators, and the first dust collecting chamber also includes a space in the dust cup body located on the side of the second cyclone separator away from the air outlet channel.

[0015] According to some embodiments of the present application, multiple second cyclone separators are located on the peripheral side of the first shell, the air outlet channel is located above the first shell, the first air outlet is located at the top of the first shell, the second dust collecting chamber is located below the multiple second cyclone separators, and the first dust collecting chamber also includes a space in the dust cup body below the first shell.

[0016] According to some embodiments of the present application, the first cyclone separator further includes a filter portion, which is disposed in the first shell and defines the first cyclone separation chamber with the first shell, and the first air outlet is connected to an output end of the filter portion.

[0017] According to some embodiments of the present application, the first air inlet is provided at the lower portion of the first shell and communicates with the lower portion of the first cyclone separation chamber, and the first dust exhaust port is provided at the upper end periphery of the first shell.

[0018] According to some embodiments of the present application, the second cyclone separator includes a second shell and a return pipe, the return pipe is arranged in the second shell and defines a second cyclone separation chamber between the second shell, the second air inlet is arranged at the upper end of the second shell and is connected to the second cyclone separation chamber, the second dust exhaust port is arranged at the lower end of the second shell and is connected to the second cyclone separation chamber, the lower end of the return pipe is connected to the second cyclone separation chamber, and the second air outlet is arranged at the upper end of the return pipe.

[0019] According to some embodiments of the present application, the second cyclone separator further includes a plurality of flow guides, which are arranged in the second cyclone separation chamber, the flow guide directions of the flow guides are inclined downward, and the plurality of flow guides are arranged at intervals around the return pipe.

[0020] According to some embodiments of the present application, the inner diameter of the second dust exhaust port decreases from top to bottom.

[0021] The vacuum cleaner according to the second embodiment of the present application includes the dust cup assembly according to the first embodiment of the present application.

[0022] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present application is further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] FIG1 is a schematic diagram of a dust cup assembly in the prior art;

[0025] FIG2 is a cross-sectional view of a dust cup assembly according to an embodiment of the present application;

[0026] FIG3 is a schematic structural diagram of the first cyclone separator in FIG2 ;

[0027] FIG4 is a cross-sectional view of the second cyclone separator in FIG2 ;

[0028] FIG5 is a schematic structural diagram of the second cyclone separator in FIG2 ;

[0029] FIG6 is a schematic diagram of the layout of multiple second cyclone separators in one embodiment of the present application;

[0030] FIG7 is a cross-sectional view of a dust cup assembly in another embodiment of the present application;

[0031] FIG8 is a cross-sectional view of a dust cup assembly in another embodiment of the present application; and

[0032] FIG9 is an internal schematic diagram of the dust cup assembly in FIG8 .

[0033] Reference numerals:

[0034] Primary separation system 10; mesh filter 11; first dust collection space 12; first cyclone space 13;

[0035] Secondary separation system 20; second dust collection space 21;

[0036] Dust cup body 100; air inlet channel 110; air outlet channel 120; first dust collecting chamber 130; first cavity 131; second cavity 132; second dust collecting chamber 140; top cover 150; dust cover 160; auxiliary channel 170;

[0037] First cyclone separator 200; first housing 210; first dust outlet 211; first air inlet 212; filter 220; first air outlet 221; first cyclone separation chamber 230;

[0038] a second cyclone separator 300 ; a second housing 310 ; a second dust exhaust port 311 ; a second air inlet 312 ; a return pipe 320 ; a second air outlet 321 ; a second cyclone separation chamber 330 ; and a flow guide 340 . DETAILED DESCRIPTION

[0039] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0040] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0041] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0042] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, assembling, and matching should be understood in a broad sense. Technical personnel in the relevant technical field can reasonably determine the specific meaning of the above terms in this application based on the specific content of the technical solution.

[0043] In order to improve the dust-gas separation efficiency of a vacuum cleaner, the dust cup in an existing vacuum cleaner is usually provided with at least a two-stage separation system and adopts a spiral separation method.

[0044] As shown in Figure 1, the dust cup includes a primary separation system 10 and a secondary separation system 20. Specifically, the primary separation system 10 includes a mesh filter 11, and below the mesh filter 11 is a first dust collecting space 12. At the same time, the mesh filter 11 needs to be arranged in the center, that is, the center line of the mesh filter 11 coincides with the center line of the dust cup, so that a primary cyclone space 13 is formed between the outer periphery of the mesh filter 11 and the inner wall of the dust cup. The dust-laden air spirals down around the outer periphery of the mesh filter 11 in the first cyclone space, and dust and gas separation is achieved under the action of centrifugal force, and the dust falls into the first dust collecting space 12 below. The secondary separation system 20 is located inside the mesh filter 11, and below the secondary separation system 20 is a second dust collecting space 21. The air filtered by the mesh filter 11 further enters the secondary separation system 20 for secondary separation, and the separated dust falls into the second dust collecting space 21 below.

[0045] However, this type of dust cup has the following problems: First, since the space between the outer periphery of the mesh filter 11 and the inner wall of the dust cup can only be used as a spiral space for dust-laden air, that is, the first cyclone space can only be used as a spiral space for dust-laden air, the first cyclone space cannot be used to store dust. At this time, the space in the dust cup for storing dust is only the space below the mesh filter 11 and below the first cyclone space. The height of the space for storing dust is relatively small, resulting in a small actual dust collection capacity of the dust cup. Second, since the dust-laden air rotates directly above the first dust collecting space 12, when a lot of dust accumulates in the first dust collecting space 12, the dust-laden air rotating in the first cyclone space will lift up the dust in the first dust collecting space 12. The lifted dust can easily cause the mesh filter 11 to be blocked, thereby causing the suction power of the vacuum cleaner to decrease, resulting in a decrease in the dust and gas separation efficiency.

[0046] To this end, referring to Figures 2 to 9 , a first embodiment of the present application provides a dust cup assembly for use in a vacuum cleaner to separate dust-laden air from air and achieve the purpose of dust collection. The dust cup assembly includes a dust cup body 100 , a first cyclone separator 200 , and a second cyclone separator 300 .

[0047] 2 , it can be understood that the dust cup body 100 is generally cylindrical in structure and is provided with an inner cavity running through from top to bottom. Generally speaking, the upper end of the dust cup body 100 is connected to a top cover 150, which closes the upper end opening of the inner cavity and can be opened to clean and maintain the separation system inside the dust cup body 100. The lower end of the dust cup body 100 is connected to a dust cover 160, which closes the lower end opening of the inner cavity and can be opened to pour out the dust sucked into the dust cup body 100. It is easy to understand that the top cover 150 and the dust cover 160 are both rotatably mounted on the dust cup body 100, and the top cover 150 and the dust cover 160 can be opened or closed by a flipping operation, which is easy to operate.

[0048] As shown in Figures 2 and 3, it can be understood that the first cyclone separator 200 and the second cyclone separator 300 are both disposed within the inner cavity of the dust cup body 100. Specifically, the first cyclone separator 200 is located at the upper portion of the inner cavity. The first cyclone separator 200 includes a first housing 210 and a filter unit 220. The first housing 210 is configured as a cup-shaped structure with an upward opening, such as a cylindrical structure with an upward opening. The outer diameter of the first housing 210 is smaller than the inner diameter of the dust cup body 100, and the central axis of the first housing 210 is offset from the central axis of the dust cup body 100. In other words, the first housing 210 is offset radially toward one side of the inner cavity. The radial direction is the direction perpendicular to the central axis of the inner cavity, and the central axis of the inner cavity is arranged in the vertical direction. For example, one side of the first housing 210 in the radial direction is in contact with the inner wall of the dust cup body 100, while the other side is spaced apart from the inner wall of the dust cup body 100. Alternatively, both sides of the first housing 210 in the radial direction are spaced apart from the inner wall of the dust cup body 100, but the spacing between the two sides is unequal. As a result, there is a large space between the radial side of the first shell 210 and the inner wall of the dust cup body 100.

[0049] As shown in Figures 2 and 3 , it can be understood that the filter unit 220 is disposed within the first housing 210. The filter unit 220 is a hollow cylindrical structure, such as a truncated cone or cylindrical structure. The central axis of the filter unit 220 coincides with the central axis of the first housing 210. The height of the filter unit 220 is substantially the same as that of the first housing 210. The maximum outer diameter of the filter unit 220 is smaller than the inner diameter of the first housing 210. Therefore, an annular first cyclone separation chamber 230 is defined between the filter unit 220 and the first housing 210. In other words, the first cyclone separation chamber 230 is arranged around the filter unit 220. The first cyclone separation chamber 230 communicates with the outer periphery of the first housing 210 through the upper opening of the first housing 210.

[0050] 2 and 3 , it can be understood that the filter unit 220 is provided with a plurality of filter holes, which are evenly arranged on the peripheral wall of the filter unit 220. The filter holes allow air and fine dust particles to pass through, while large dust particles or foreign matter cannot pass through. Generally speaking, the top of the filter unit 220 is closed, and the bottom of the filter unit 220 is open (i.e., the output end), so that air flows downward from the filter unit 220 after passing through the filter holes. The first air outlet 221 is provided at the bottom of the first housing 210 and is connected to the bottom opening of the filter unit 220.

[0051] It is easy to understand that the filter portion 220 and the first shell 210 are an integrally formed structure and can be directly produced by stamping, which is beneficial to improving production efficiency.

[0052] 2 , it can be understood that a first air inlet 212 is provided at the lower end of the peripheral wall of the first shell 210, and the first air inlet 212 is communicated with the lower portion of the first cyclone separation chamber 230. The dust cup body 100 is provided with an air inlet channel 110, which is arranged transversely and extends from the outer wall of the dust cup body 100 to the inner wall of the first shell 210. The air inlet channel 110 is connected to the first air inlet 212, that is, the air inlet channel 110 is communicated with the lower portion of the first cyclone separation chamber 230, and the airflow direction of the air entering the first cyclone separation chamber 230 through the air inlet channel 110 is tangential to the filter portion 220. Therefore, when the dust-laden air enters the first cyclone separation chamber 230 through the air inlet channel 110, the dust-laden air spirally flows upward around the filter part 220 in the first cyclone separation chamber 230. Under the action of centrifugal force and the filtering action of the filter holes, large particles of dust and other foreign matter are thrown from the upper opening of the first shell 210 to the outside of the first shell 210, that is, the space between the outer peripheral wall of the first shell 210 and the inner peripheral wall of the dust cup body 100, while the air and small particles of dust enter the hollow space of the filter part 220 and leave the first cyclone separator 200 from the opening at the bottom of the filter part 220 and the first air outlet 221, thereby realizing the first dust-gas separation of the dust-laden air.

[0053] It is easy to understand that during the first dust and gas separation process, since the wall of the first shell 210 separates the first cyclone separation chamber 230 from the periphery of the first shell 210, the airflow in the first cyclone separation chamber 230 will not lift up large particles of dust on the periphery of the first shell 210, effectively avoiding the disadvantage of large particles of dust causing clogging of the filter part 220.

[0054] 2 and 3 , it can be understood that, in order to facilitate the dust separated in the first dust-gas separation process to be thrown outside the first shell 210, a first dust outlet 211 is provided on the upper peripheral edge of the wall of the first shell 210. The first dust outlet 211 is located on the side of the first shell 210 that is away from the offset direction of the first shell 210, that is, the first dust outlet 211 is located on the side with a larger space between the outer peripheral wall of the first shell 210 and the inner peripheral wall of the dust cup body 100. As a result, the separated large particles of dust can be thrown to the outer periphery of the first shell 210 through the first dust outlet 211.

[0055] 2 and 4 , it can be understood that the second cyclone separator 300 is disposed on the lower side of the first housing 210, that is, the second cyclone separator 300 is located on the lower side of the first housing 210. At the same time, the second cyclone separator 300 is also arranged offset from the center line of the dust cup body 100. Specifically, the second cyclone separator 300 is located on the side of the first housing 210 in the offset direction, and the second cyclone separator 300 is arranged in the up-down direction.

[0056] As shown in Figures 4 and 5, it can be understood that the second cyclone separator 300 includes a second housing 310 and a return pipe 320. Specifically, the second housing 310 is a cylindrical structure that extends vertically. The return pipe 320 is disposed within the second housing 310, with the central axis of the return pipe 320 coinciding with the central axis of the second housing 310. A second cyclone separation chamber 330 is defined between the return pipe 320 and the second housing 310. A second air inlet 312 is provided at the upper end of the second housing 310, and a second dust exhaust port 311 is provided at the lower end. The second air inlet 312 communicates with the upper end of the second cyclone separation chamber 330, while the second dust exhaust port 311 communicates with the lower end of the second cyclone separation chamber 330. The lower end of the return pipe 320 communicates with the second cyclone separation chamber 330, and a second air outlet 321 is provided at the upper end of the return pipe 320.

[0057] As shown in Figure 2, it can be understood that the second air inlet 312 is connected to the first air outlet 221. For this purpose, an auxiliary channel 170 is also provided in the dust cup body 100. The auxiliary channel 170 is arranged horizontally, and the end of the auxiliary channel 170 close to the central axis of the dust cup body 100 is connected to the opening at the bottom of the filter part 220 (that is, the first air outlet 221), and the end of the auxiliary channel 170 away from the central axis of the dust cup body 100 is connected to the second air inlet 312.

[0058] 2 , it can be understood that the dust cup body 100 is further provided with an air outlet channel 120 and a second dust collecting chamber 140, wherein the second dust collecting chamber 140 is provided on the lower side of the second cyclone separator 300 and is in communication with the second dust exhaust port 311. The air outlet channel 120 is provided on the side of the second cyclone separator 300 facing the central axis of the first shell 210, that is, the air outlet channel 120 is also located below the first shell 210. The air outlet channel 120 is arranged in the up-down direction, and the upper end of the air outlet channel 120 is connected to the second air outlet 321, and the lower end of the air outlet channel 120 is in communication with the outside of the dust cup body 100 through the through hole on the dust cover 160.

[0059] 2 and 4 , it is easy to understand that the air after the first dust and gas separation enters the second cyclone separator 300 from the opening at the bottom of the filter section 220 (i.e., the first air outlet 221) through the auxiliary channel 170 and the second air inlet 312. After downward spiral separation, the small particles of dust are separated from the air, and the separated dust is discharged from the second dust outlet 311 at the lower end to the second dust collecting chamber 140. The separated air returns from the lower part of the second cyclone separation chamber 330 through the return pipe 320 to the second air outlet 321 at the upper end, and is discharged through the air outlet channel 120, thereby realizing the second dust and gas separation of the air, effectively improving the dust and gas separation effect and improving the dust and gas separation efficiency.

[0060] It can be understood that, generally speaking, the suction motor of the vacuum cleaner is arranged below the dust cup body 100. Since the air outlet channel 120 is located at the lower part of the dust cup body 100, the lower end of the air outlet channel 120 can be directly connected to the suction end of the suction motor through the through hole on the dust cover 160. There is no need to connect a pipe between the air outlet channel 120 and the suction motor. On the one hand, the number of parts and the occupied space are reduced. On the other hand, the air duct is entirely located in the dust cup body 100, which can reduce air duct losses and give full play to the dust and gas separation performance of the first cyclone separator 200 and the second cyclone separator 300.

[0061] 2 , it can be understood that, in the dust cup body 100, a first dust collecting chamber 130 is formed between the outside of the first cyclone separator 200, the outside of the second cyclone separator 300, the outside of the second dust collecting chamber 140, the outside of the air outlet channel 120 and the inner wall of the dust cup body 100, that is, the first dust collecting chamber 130 includes a first cavity 131 located at the periphery of the first shell 210 and a second cavity 132 located at the bottom of the first shell 210. The first cavity 131 is the space between the outer peripheral wall of the first shell 210 and the inner peripheral wall of the dust cup body, and the second cavity 132 is the space between the outer peripheral wall of the second shell 310, the outer peripheral wall of the air outlet channel 120, the outer peripheral wall of the second dust collecting chamber 140 and the inner peripheral wall of the dust cup body, thereby effectively increasing the volume of the first dust collecting chamber 130, that is, increasing the dust collecting volume of the dust cup assembly.

[0062] It is easy to understand that the openings of the first dust collecting chamber 130 and the second dust collecting chamber 140 are both facing downward. By taking the dust cup assembly out of the vacuum cleaner and opening the dust cover 160, the dust in the first dust collecting chamber 130 and the second dust collecting chamber 140 can be cleaned, which is convenient for operation.

[0063] By defining a first cyclone separation chamber 230 within the first cyclone separator 200, the first cyclone separation chamber 230 is separated from the first dust collection chamber 130. This prevents dust within the first dust collection chamber 130 from being lifted up and causing clogging of the filter 220 during the spiral rotation of air around the filter 220, effectively ensuring suction at the filter 220 and improving dust and gas separation efficiency. Furthermore, the space between the outer circumferential wall of the first housing 210 and the inner circumferential wall of the dust cup body 100 can also be used to store dust, effectively increasing the dust collection capacity. Furthermore, by offsetting the first cyclone separator 200 relative to the centerline of the dust cup body 100, the space between the outer circumferential wall of the first housing 210 and the inner circumferential wall of the dust cup body 100 is primarily located on one radial side of the first housing 210, improving dust passage, preventing clogging, and improving the usability of this space.

[0064] As shown in FIG2 , it can be understood that, along the radial direction of the first shell 210, one side peripheral wall of the first shell 210 is in contact with the inner peripheral wall of the dust cup body 100. In other words, the first shell 210 is completely offset to one radial side of the dust cup body 100, so that a large space is provided between the outer peripheral wall of the first shell 210 on the side facing away from the offset direction and the inner peripheral wall of the dust cup body 100. Dust can easily pass through this space, avoiding blockage, effectively improving the usability of this space, and at the same time, increasing the dust collection capacity of the dust cup body 100. In addition, the dust collection capacity visible to the user from the side of the dust cup body 100 is also large, which is conducive to improving product competitiveness.

[0065] It is easy to understand that during the dust-gas spiral separation process, after the dust is discharged from the first cyclone separation chamber 230 to the first dust collecting chamber 130 through the first dust discharge port 211, due to inertia, the dust will still spiral around the first shell 210 in the first cavity 131 of the first dust collecting chamber 130. Thanks to the side wall of the first shell 210 being in contact with the inner wall of the dust cup body 100, the first shell 210 can hinder the dust in the first cavity 131 from further spiral movement, preventing the dust from being lifted up and falling back into the first cyclone separation chamber 230, thereby avoiding clogging of the filter unit 220. As a result, the dust can be stably collected in the first dust collecting chamber 130, which is conducive to improving the dust-gas separation efficiency.

[0066] 2 , it can be understood that when the air inlet channel 110 extends from the outer wall of the dust cup body 100 to the inner wall of the first shell 210, the air inlet channel 110 will occupy the space between the outer periphery of the first shell 210 and the inner circumferential wall of the dust cup body 100, that is, the air inlet channel 110 occupies part of the space of the first dust collecting chamber 130. To this end, the air inlet channel 110 is disposed near the joint between the first shell 210 and the dust cup body 100, or the air inlet channel 110 is directly disposed at the joint between the first shell 210 and the dust cup body 100, thereby reducing the volume of the air inlet channel 110 in the first dust collecting chamber 130, that is, reducing the space of the first dust collecting chamber 130 occupied by the air inlet channel 110, effectively increasing the volume of the first dust collecting chamber 130, that is, increasing the dust collecting capacity of the dust cup body 100. At the same time, because the portion of the air inlet channel 110 within the first cavity 131 of the first dust collecting chamber 130 is small or non-existent, the air inlet channel 110 structure can avoid hindering dust from falling into the second cavity 132 of the first dust collecting chamber 130, thereby facilitating dust collection. Furthermore, when cleaning dust from the dust cup body 100, the air inlet channel 110 structure can avoid hindering the discharge of dust from the first dust collecting chamber 130, thereby facilitating cleaning. Furthermore, the air inlet channel 110 can be shortened, thereby reducing air duct losses and improving dust-gas separation efficiency.

[0067] Referring to Figures 2 and 6, it can be understood that in order to further improve the dust and gas separation efficiency, a plurality of second cyclone separators 300 are provided in the dust cup body 100, and the plurality of second cyclone separators 300 are arranged around the central axis of the first shell 210. At this time, the plurality of second cyclone separators 300 are all located below the first shell 210.

[0068] As shown in Figure 6, it can be understood that the number of second cyclone separators 300 is small, and multiple second cyclone separators 300 are arranged in an arc shape around the central axis of the first shell 210, that is, multiple second cyclone separators 300 are located on the arc line, and the center of the circle where the arc line is located coincides with the central axis of the first shell 210, and the air outlet channel 120 is located on the side of the multiple second cyclone separators 300 facing the center of the circle where the arc line is located, and the cross-section of the second dust collecting chamber 140 is arc-shaped.

[0069] As shown in Figure 7, in other embodiments, it can be understood that the number of second cyclone separators 300 is sufficient, and multiple second cyclone separators 300 are arranged along a reference circle, that is, multiple second cyclone separators 300 are arranged in a circle around the central axis of the first shell 210, the center of the reference circle coincides with the central axis of the first shell 210, the air outlet channel 120 is located between the multiple second cyclone separators 300, and the cross-section of the second dust collection chamber 140 is circular. The second air inlets 312 of the multiple second cyclone separators 300 are all connected to the auxiliary channel 170, and the second air outlets 321 of the multiple second cyclone separators 300 are all connected to the air outlet channel 120. In this case, the space between the side of the multiple second cyclone separators 300 facing away from the air outlet channel 120 and the inner peripheral wall of the dust cup body is the second cavity 132 of the first dust collection chamber 130.

[0070] Therefore, the air after the first dust and gas separation can be subjected to a second dust and gas separation by using a plurality of second cyclone separators 300, thereby effectively improving the dust and gas separation efficiency.

[0071] 8 and 9 , in other embodiments, it can be understood that a plurality of second cyclone separators 300 can be arranged on the peripheral side of the first shell 210. Specifically, a plurality of second cyclone separators 300 are located on the side of the first shell 210 facing the offset direction, and the outer peripheral wall of the second shell 310 is respectively in contact with the outer peripheral wall of the first shell 210 and the inner wall of the dust cup body 100, so that the second cyclone separator 300 can also prevent the dust in the first cavity 131 from further spiral movement. At this time, the bottom of the filter unit 220 is closed and the top is open (i.e., the output end). The first air outlet 221 is located at the top of the first shell 210 and is connected to the top opening of the filter unit 220. It can also be understood that the top opening of the filter unit 220 is the first air outlet 221. The auxiliary channel 170 is located above the first cyclone separation chamber 230. The opening at the top of the filter unit 220 (i.e., the first air outlet 221) is connected to the second air inlets 312 of the multiple second cyclone separators 300 through the auxiliary channel 170. The air outlet channel 120 is located above the first cyclone separator 200, and the second air outlets 321 of the multiple second cyclone separators 300 are connected to the air outlet channel 120. As a result, the space directly below the first cyclone separator 200 in the dust cup body 100 becomes the second cavity 132 of the first dust collection chamber 130, which has a large dust collection capacity.

[0072] As shown in Figures 4 and 5 , it can be understood that the second cyclone separator 300 further includes a plurality of guide members 340, which are guide plates arranged obliquely downward. The guide members 340 are disposed within the second cyclone separation chamber 330 and are arranged at equal intervals around the return pipe 320, or arranged along a reference spiral line around the return pipe 320, with the guide members 340 directing air obliquely downward. Therefore, when air, after the initial dust and gas separation, enters the second cyclone separator 300, it is guided by the guide members 340 and flows downward in a spiral around the return pipe 320 within the second cyclone separation chamber 330. Centrifugal force separates dust from the air, and the dust is discharged from the second dust discharge port 311 at the lower end into the second dust collection chamber 140, while the air flows upward through the return pipe 320 to the outlet channel 120. This spiral separation method improves dust and gas separation.

[0073] 4 , it can be understood that the inner diameter of the second dust exhaust port 311 decreases from top to bottom, that is, the second dust exhaust port 311 is funnel-shaped, which is conducive to collecting the separated dust so that the dust can be discharged into the second dust collecting chamber 140 in a concentrated manner, thereby avoiding the dust being raised and causing a decrease in the dust-gas separation efficiency.

[0074] The second embodiment of the present application provides a vacuum cleaner, including a dust cup assembly of any of the above embodiments. Generally speaking, the vacuum cleaner also includes a dust suction motor, and the air outlet channel 120 in the dust cup assembly is connected to the dust suction motor.

[0075] Since the vacuum cleaner adopts all the technical solutions of the dust cup assembly of the above embodiment, it has at least all the beneficial effects brought about by the technical solutions of the above embodiment.

[0076] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present application.

Claims

1. Dust cup assembly, including: The dust cup body is provided with an air inlet channel, an air outlet channel, a first dust collecting chamber and a second dust collecting chamber; a first cyclone separator, disposed in the dust cup body, the first cyclone separator comprising a first shell, the first shell defining a first cyclone separation chamber and being provided with a first air inlet, a first dust outlet and a first air outlet, the first cyclone separation chamber being connected to the air inlet channel through the first air inlet, and the first cyclone separation chamber being connected to the first dust collecting chamber through the first dust outlet; and at least one second cyclone separator, disposed in the dust cup body, the second cyclone separator being provided with a second air inlet, a second dust outlet and a second air outlet, the second air inlet being connected to the first air outlet, the second dust outlet being connected to the second dust collecting chamber, and the second air outlet being connected to the air outlet channel; Wherein, the first dust collecting chamber at least includes the space between the outer peripheral wall of the first shell and the inner peripheral wall of the dust cup body.

2. The dust cup assembly according to claim 1, wherein, The central axis of the first shell deviates from the central axis of the dust cup body.

3. The dust cup assembly according to claim 1 or 2, wherein, There are multiple second cyclone separators, and the multiple second cyclone separators are arranged around the central axis of the first shell.

4. The dust cup assembly according to claim 3, wherein, The air outlet channel and the plurality of second cyclone separators are located below the first shell, and the air outlet channel is located on a side of the second cyclone separator close to the central axis of the first shell, and the first air outlet is located at the bottom of the first shell.

5. The dust cup assembly according to claim 4, wherein, A side circumferential wall of the first shell is attached to the inner circumferential wall of the dust cup body.

6. The dust cup assembly according to claim 5, wherein, The air inlet passage is located on one side close to the fitting point between the dust cup body and the first shell.

7. The dust cup assembly according to any one of claims 4 to 6, wherein, The plurality of second cyclone separators are arranged in an arc shape around the central axis of the first shell, the second dust collecting chamber is located below the plurality of second cyclone separators, and the first dust collecting chamber also includes a partial space in the dust cup body below the first shell.

8. The dust cup assembly according to any one of claims 4 to 7, wherein, A plurality of the second cyclone separators are arranged in a circle around the central axis of the first shell, the air outlet channel is arranged between the plurality of the second cyclone separators, the second dust collecting chamber is located below the plurality of the second cyclone separators, and the first dust collecting chamber also includes a space in the dust cup body located on the side of the second cyclone separator away from the air outlet channel.

9. The dust cup assembly according to any one of claims 3 to 8, wherein, Multiple second cyclone separators are located on the peripheral side of the first shell, the air outlet channel is located above the first shell, the first air outlet is located on the top of the first shell, the second dust collecting chamber is located below the multiple second cyclone separators, and the first dust collecting chamber also includes a space in the dust cup body below the first shell.

10. The dust cup assembly according to any one of claims 1 to 9, wherein, The first cyclone separator further includes a filter portion, which is disposed in the first shell and defines the first cyclone separation chamber with the first shell. The first air outlet is connected to an output end of the filter portion.

11. The dust cup assembly according to any one of claims 1 to 10, wherein, The first air inlet is disposed at the lower portion of the first shell and communicates with the lower portion of the first cyclone separation chamber, and the first dust exhaust port is disposed at the upper end periphery of the first shell.

12. The dust cup assembly according to any one of claims 1 to 11, wherein, The second cyclone separator includes a second housing and a return pipe. The return pipe is disposed within the second housing and defines a second cyclone separation chamber with the second housing. The second air inlet is disposed at the upper end of the second housing and communicates with the second cyclone separation chamber. The second dust discharge port is disposed at the lower end of the second housing and communicates with the second cyclone separation chamber. The lower end of the return pipe communicates with the second cyclone separation chamber. The second air outlet is disposed at the upper end of the return pipe.

13. The dust cup assembly according to claim 12, wherein, The second cyclone separator further includes a plurality of guide members. The plurality of guide members are disposed within the second cyclone separation chamber. The guiding direction of the guide members is inclined downward, and the plurality of guide members are arranged at intervals around the return pipe.

14. The dust cup assembly according to claim 12 or 13, wherein, The inner diameter of the second dust discharge port decreases from top to bottom.

15. A vacuum cleaner, comprising the dust cup assembly according to any one of claims 1 to 14.

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