Cyclone separation device, dust collecting device, and cleaning apparatus

Abstract

The disclosure provides a cyclone separation device, a dust collection device and a cleaning equipment, and belongs to the field of cleaning equipment. The cyclone separation device comprises a first cyclone separation assembly and a second cyclone separation assembly arranged in layers; the first cyclone separation assembly comprises a plurality of first cyclone cones arranged in a circumferential direction, and in an axial projection, a projection gap region is formed between adjacent two first cyclone cones; the second cyclone separation assembly comprises a plurality of second cyclone cones arranged in a circumferential direction, the number of the second cyclone cones is less than the number of the first cyclone cones, the second cyclone cones are arranged in a circumferential direction in a staggered manner with the first cyclone cones, and the axial projection of each second cyclone cone is at least partially located in the projection gap region; wherein in the interlayer space corresponding to the projection gap region, at least part of the region not occupied by the second cyclone cone forms a flow guide buffer space. The technical scheme provided by the disclosure can balance the compactness, flow capacity and separation performance of the cyclone separation device.

Description

Technical Field

[0001] This disclosure belongs to the field of cleaning equipment technology, specifically relating to a cyclone separator, a dust collection device, and a cleaning equipment. Background Technology

[0002] Cyclone separators are commonly used in vacuum cleaners, dust removal equipment, and air handling units. They utilize the high-speed rotation of dust-laden airflow within a cyclone cone, causing dust particles to separate from the airflow under centrifugal force. The diameter, number, and arrangement of the cyclone cones affect the flow capacity, pressure loss, and fine dust separation efficiency of the cyclone separator. With a smaller cyclone cone diameter, the airflow can achieve a higher rotational speed within the cone, which is beneficial for separating smaller dust particles; however, the effective flow area of ​​a single cyclone cone is correspondingly reduced. When the total air volume handled by the cyclone separator is large, the number of cyclone cones needs to be increased to avoid each cone handling an excessively large airflow.

[0003] Existing cyclone separators typically arrange multiple cyclone cones in the same layer, with the cones aligned circumferentially. Due to limitations imposed by the outer diameter of the separator, the size of the cyclone cones, and the assembly spacing between adjacent cones, a single-layer structure can accommodate a limited number of cyclone cones. Increasing the number of cones requires expanding the radial dimension of the separator, potentially increasing the overall volume of the dust collection and cleaning equipment. Conversely, further reducing the size of the cones while maintaining the same external dimensions may decrease the flow capacity of a single cone and increase flow resistance at the cone inlet. Insufficient number of cones in a single layer can lead to concentrated airflow through a smaller number of cones, resulting in excessively high inlet velocities for individual cones and consequently increasing pressure loss within the cyclone separator. Summary of the Invention

[0004] Some cyclone separators employ a multi-layered arrangement of cyclone cones to increase the number of cones within the axial space of the device. However, if the cyclone cones in each layer are arranged axially in a multi-layered structure, they tend to overlap in their axial projection, obstructing the airflow channels between layers. Furthermore, if the same or nearly equal number of cyclone cones are used in each layer, the limited space between layers is easily occupied by the densely packed cones, reducing the space available for airflow turning, diffusion, and distribution. When dust-laden airflow flows towards the inner cyclone cones, it must pass through a narrower interlayer region, easily leading to localized flow channel contraction, airflow acceleration, and interference between adjacent airflow branches. Additionally, the inlet flow rates obtained by different cyclone cones may vary significantly, with some cones carrying excessive airflow while the flow capacity of others remains underutilized.

[0005] Simply stacking multiple cyclone cones can increase the axial dimensions of the cyclone separator. To avoid structural interference between different layers of cyclone cones, it is usually necessary to increase the axial distance between adjacent layers, making it difficult to balance the number of cyclone cones and overall compactness in the cyclone separator. How to increase the number of cyclone cones within limited radial and axial dimensions, while maintaining sufficient interlayer airflow space and reducing obstruction and airflow interference between different layers of cyclone cones, has become a technical problem that existing cyclone separators need to solve.

[0006] In view of the aforementioned technical problems, the purpose of this disclosure is to provide a cyclone separator, a dust collection device, and a cleaning device that can take into account the compactness, flow capacity, and separation performance of the cyclone separator.

[0007] To achieve the above objectives, the technical solution provided in this disclosure is as follows:

[0008] In a first aspect, this disclosure provides a cyclone separator, comprising a first cyclone separator assembly and a second cyclone separator assembly arranged in layers along the axial direction of the cyclone separator assembly; the first cyclone separator assembly includes a plurality of first cyclone cones arranged circumferentially along the cyclone separator assembly, wherein a projection gap region is formed between two adjacent first cyclone cones in the axial projection; the second cyclone separator assembly includes a plurality of second cyclone cones arranged circumferentially, the number of second cyclone cones being less than the number of first cyclone cones, the second cyclone cones being staggered from the first cyclone cones in the circumferential direction, and the axial projection of each second cyclone cone being at least partially located within the projection gap region; wherein, between the first cyclone separator assembly and the second cyclone separator assembly, a flow guiding buffer space is formed in the space axially corresponding to the projection gap region and not occupied by the second cyclone cones, the flow guiding buffer space communicating with the air inlet of the second cyclone cone, so that at least a portion of the airflow that does not enter the first cyclone cone enters the second cyclone cone through the flow guiding buffer space. By utilizing the interlayer area not occupied by the second cyclone cone to form a flow-guiding buffer space, the space required for airflow to turn, diffuse and redistribute can be provided, thus taking into account the cyclone cone arrangement density, flow capacity and structural compactness.

[0009] In one or more embodiments, the cyclone separator forms an air intake space located outside the flow-guiding buffer space; each of the first cyclone cones has a first air inlet, and each first air inlet is disposed facing outward of the flow-guiding buffer space and communicating with the air intake space, so that the airflow in the air intake space can enter the first cyclone cone through the first air inlet. By providing an air intake space outside the flow-guiding buffer space and having the first air inlet facing the air intake space, the airflow in the air intake space can enter the first cyclone cone along a shorter path, reducing the turning and flow resistance of the airflow before entering the first cyclone cone.

[0010] In one or more embodiments, each of the second cyclone cones has a second air inlet, and each second air inlet is disposed facing outward of the second cyclone separator assembly. The second air inlet is closer to the axis of the cyclone separator than the first air inlet. By forming a radially layered two-stage air intake layout, the first cyclone cone obtains airflow from the outer air intake space, and the second cyclone cone obtains airflow from the inner interlayer region, reducing the conflict between the two types of airflow.

[0011] In one or more embodiments, the projection of the second air inlet onto a projection plane perpendicular to the axial direction of the cyclone separator is at least partially located within the region corresponding to the flow-guiding buffer space. The second air inlet is connected to the flow-guiding buffer space so that the airflow in the flow-guiding buffer space can enter the second cyclone cone through the second air inlet. By ensuring that the projection of the second air inlet is at least partially located within the region corresponding to the flow-guiding buffer space and that the second air inlet is connected to the flow-guiding buffer space, the airflow path from the flow-guiding buffer space to the second air inlet can be shortened, reducing the large-angle deflection of the airflow when entering the second cyclone cone, and allowing the airflow, after buffering and pressure equalization, to enter the second cyclone cone more smoothly.

[0012] In one or more embodiments, the first cyclone cone includes a first windward wall for guiding airflow to the first air inlet, the first windward wall extending tangentially to the first cyclone cone; and / or, the second cyclone cone includes a second windward wall for guiding airflow to the second air inlet, the second windward wall extending tangentially to the second cyclone cone. By providing windward walls, the airflow quickly forms a rotational motion after entering the cyclone cone, reducing radial impact and local turbulence, and enhancing the rotational stability of the airflow within the cyclone cone and its dust separation capability.

[0013] In one or more embodiments, each of the first cyclone cones has a first air outlet, and the top of the first cyclone separation assembly is provided with a barrier, the barrier including a cover plate and a barrier portion; the cover plate covers each of the first air outlets and has an air outlet hole at a position corresponding to each of the first air outlets; the barrier portion surrounds the outer periphery of the second cyclone separation assembly and blocks the air outlet holes from the second cyclone separation assembly. By using the barrier portion to separate each air outlet hole from the second cyclone separation assembly, the purified airflow discharged from the first cyclone cone can be separated from the dust-laden airflow received by the second cyclone cone, reducing the possibility of purified airflow entering the second air inlet or disturbing the inlet pressure field of the second cyclone separation assembly, and maintaining the parallel separation relationship of the two sets of cyclone cones.

[0014] In one or more embodiments, a diversion space is formed between the barrier and the second cyclone separator assembly, the diversion space being connected to the flow guide buffer space and each of the second air inlets; the airflow in the flow guide buffer space can enter the diversion space through the gap between the barrier and the second cyclone separator assembly, and be diverted by the diversion space to each of the second air inlets. By forming a diversion space between the barrier and the second cyclone separator assembly, and connecting the diversion space to the flow guide buffer space and each of the second air inlets, airflow from different locations can be converged, pressure equalized, and circumferentially distributed before entering the second cyclone cone.

[0015] In one or more embodiments, an air intake channel is formed between two adjacent first cyclone cones. The air intake channel connects the air intake space and the flow-guiding buffer space, so that a portion of the airflow in the air intake space enters the first cyclone cone through the first air intake, and another portion of the airflow enters the flow-guiding buffer space through the air intake channel. The air intake path of the second cyclone separator is established using the arrangement interval between the first cyclone cones, allowing the airflow in the air intake space to flow to the first and second cyclone cones respectively, eliminating the need for a separate air intake pipe that occupies a large space.

[0016] In one or more embodiments, a first angle is formed between the axis of the first cyclone cone and the axis of the cyclone separator, and a second angle is formed between the axis of the second cyclone cone and the axis of the cyclone separator, wherein the first angle is smaller than the second angle. By making the first angle smaller than the second angle, the second cyclone cone can be inserted into the empty area between the first cyclone cones at a greater degree of inclination, thereby improving the spatial avoidance relationship between the first and second cyclone cones.

[0017] In one or more embodiments, the ratio of the number of first cyclone cones to the number of second cyclone cones is 4:3. By setting the ratio of the number of first cyclone cones to the number of second cyclone cones to 4:3, it is possible to increase the total number of cyclone cones while avoiding the second cyclone cones from filling the entire projected gap area, thus creating a more reasonable configuration of the cyclone separator between increasing the flow area and retaining the flow guiding buffer space.

[0018] Secondly, this disclosure provides a dust collection device, which includes a dust cup and the aforementioned cyclone separator disposed in the dust cup. By providing a cyclone separator inside the dust cup, the functions of cyclone separation, dust collection, and airflow conveying can be integrated into the dust collection device, so that the dust separated by the cyclone separator is collected by the dust cup, and the processed airflow is discharged from the dust collection device.

[0019] In one or more embodiments, the dust cup contains a filter assembly, which includes a mounting frame, a fine dust cylinder, and a filter screen. The mounting frame includes a top structure, a bottom structure, and a connecting arm connecting the top and bottom structures. A perforated structure is formed between the top and bottom structures, and the filter screen surrounds the outer periphery of the perforated structure. By using the mounting frame to support the filter screen and the cyclone separator, and by reducing the obstruction of the filter screen's flow area by the perforated structure, the filter screen can intercept hair, fibers, and larger particles before the airflow enters the cyclone separator, reducing the possibility of clogging the cyclone cone inlet structure.

[0020] In one or more embodiments, a fine dust chamber is formed inside the fine dust cylinder, extending axially along the dust cup. A guide tube is provided on the inner side of the filter screen, communicating with the top opening of the fine dust chamber. A primary separation chamber, separated from the secondary separation chamber, is formed between the filter screen and the outer wall of the guide tube. The primary and secondary separation chambers are separated from each other, which reduces airflow disturbance in the primary separation chamber from the secondary separation process.

[0021] In one or more embodiments, the first cyclone separator assembly is fixed to the top structure of the mounting frame; each of the first cyclone cones has a first air inlet and a first dust outlet, the first air inlet of each first cyclone cone is connected to the primary separation chamber, and the first dust outlet of each first cyclone cone is connected to the guide pipe. By fixing the first cyclone separator assembly to the top structure of the mounting frame, and connecting the first air inlet to the primary separation chamber and the first dust outlet to the guide pipe, a complete airflow and dust discharge path can be formed from the primary separation chamber into the first cyclone cone and from the first cyclone cone to the fine dust chamber, while improving the installation stability of the first cyclone separator assembly.

[0022] In one or more embodiments, the first cyclone separator includes a docking seat surrounding each of the first dust outlets, the docking seat being sealed to the top opening of the guide tube. By collecting the dust discharged from each of the first dust outlets through the docking seat and sealing the docking seat to the top opening of the guide tube, fine dust can be prevented from leaking from the connection point into the primary separation chamber.

[0023] In one or more embodiments, a hollow region formed by a plurality of first cyclone cones is formed in the middle of the first cyclone separator assembly, and a connecting pipe is provided in the hollow region; each second cyclone cone has a second dust outlet, and the connecting pipe is connected to each second dust outlet and the guide pipe respectively, so as to guide the dust discharged from each second dust outlet to the guide pipe and discharge it into the fine dust chamber through the guide pipe. By setting the connecting pipe in the hollow region formed by the plurality of first cyclone cones and connecting the connecting pipe to each second dust outlet and the guide pipe, the dust discharge channel of the second cyclone cones can be arranged in the central space of the first cyclone separator assembly, so that the dust separated by the second cyclone cones enters the fine dust chamber through the connecting pipe and the guide pipe, forming a compact and relatively closed second layer of dust discharge path.

[0024] Thirdly, this disclosure provides a cleaning device that includes the aforementioned dust collection device.

[0025] The cyclone separator, dust collection device, and cleaning equipment disclosed herein utilize a first cyclone separator component and a second cyclone separator component arranged in layers along the axial direction of the cyclone separator. A smaller number of second cyclone cones are arranged in a circumferentially staggered arrangement relative to the first cyclone cones, allowing the second cyclone cones to at least partially utilize the projected gap area between adjacent first cyclone cones. This increases the total number of cyclone cones without significantly increasing the radial and axial dimensions of the cyclone separator, thereby improving the cyclone cone arrangement density and overall flow capacity within a limited space. The interlayer area not occupied by the second cyclone cones forms a guiding buffer space, providing the necessary flow space for airflow turning, diffusion, and redistribution, reducing flow channel contraction, localized high-speed airflow, and turbulent interference caused by mutual obstruction between upper and lower cyclone cones. The airflow entering the cyclone separator can be distributed to more cyclone cones, reducing the average flow rate and inlet resistance borne by a single cyclone cone. While maintaining a smaller cyclone cone size and fine dust separation capacity, it reduces system pressure loss, improves interlayer airflow uniformity, and balances the compactness, flow capacity, and separation performance of the cyclone separator. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a cyclone separator in one embodiment of the present disclosure;

[0028] Figure 2 This is a top view of a cyclone separator according to an embodiment of the present disclosure;

[0029] Figure 3 This is a schematic diagram of the structure of a double-layer cyclone separator assembly in one embodiment of the present disclosure;

[0030] Figure 4 This is a top view of a double-layer cyclone separator assembly according to an embodiment of the present disclosure;

[0031] Figure 5 This is a schematic diagram of the structure of the first cyclone separator component in one embodiment of the present disclosure;

[0032] Figure 6 This is a top view of the first cyclone separator assembly in one embodiment of this disclosure;

[0033] Figure 7 This is a schematic diagram of the structure of the second cyclone separator component in one embodiment of the present disclosure;

[0034] Figure 8 This is a top view of the second cyclone separator assembly in one embodiment of this disclosure;

[0035] Figure 9 This is a schematic diagram of the barrier component in one embodiment of the present disclosure;

[0036] Figure 10 This is a cross-sectional view of a dust collection device according to an embodiment of the present disclosure;

[0037] Figure 11 This is a schematic diagram of the mounting bracket and the fine dust cylinder in one embodiment of the present disclosure.

[0038] Explanation of key figure labels:

[0039] 100 - Cyclone separator, 1 - First cyclone separator assembly, 11 - First cyclone cone, 111 - First air inlet, 112 - First air outlet, 113 - First dust outlet, 114 - First windward wall, 12 - Projected gap area, 13 - Air inlet channel, 14 - Docking seat, 15 - Hollow area, 16 - Connecting pipe, 2 - Second cyclone separator assembly, 21 - Second cyclone cone, 211 - Second air inlet, 212 - Second dust outlet, 213 - Second windward wall, 3- Flow guide buffer space, 4- Air inlet space, 5- Barrier component, 51- Cover plate, 52- Barrier component, 53- Air outlet, 54- Diversion space, 6- Dust cup, 61- Bottom cover, 7- Filter assembly, 71- Mounting bracket, 711- Top structure, 712- Bottom structure, 713- Connecting arm, 714- Hollow structure, 72- Fine dust cylinder, 721- Fine dust chamber, 73- Filter screen, 74- Guide tube, 75- Primary separation chamber. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0041] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.

[0042] It should be noted that when an element is described as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. In the embodiments shown in this disclosure, directions such as up, down, left, right, front, and back are relative and used to explain the relative positional and movement relationships between different components in this disclosure. These representations are appropriate when the components are in the positions shown in the figures. However, if the description of the component positions changes, then these representations are considered to change accordingly.

[0043] Cyclone separators typically rely on multiple cyclone separator units connected in parallel to process dust-laden airflow. Reducing the size of a single cyclone separator unit helps increase the airflow rotation speed and enhance fine dust separation capabilities, but the airflow rate that a single cyclone separator unit can handle decreases accordingly. To meet larger airflow demands, more cyclone separator units need to be installed within the separator. Existing single-layer arrangements mainly utilize radial plane arrangements of cyclone separator units. Once the external dimensions of the cyclone separator are determined, the number of cyclone separator units that can be arranged is limited. If the distance between adjacent cyclone separator units is further reduced, the installation structure of the cyclone separator units and the airflow inlet channel are prone to interference, and the space available for airflow distribution and redirection will also decrease.

[0044] After analyzing the multi-layer arrangement, the inventors discovered that while increasing the number of cyclone separation units can increase the number of cyclone separation units per unit projected area, simply stacking multiple identical or similar cyclone separation layers does not necessarily improve the flow performance of the cyclone separation device. Cyclone separation units at different levels may block each other in the direction of airflow, and the limited interlayer space also needs to simultaneously undertake functions such as air intake distribution, airflow deflection, and branch convergence.

[0045] When the cyclone separation unit excessively occupies the interlayer space, the effective cross-sectional area of the air flow channel decreases, the local air flow velocity increases, and it is easy to generate mutual interference between different air flow branches. The increased cross-sectional area increment brought by the increase in the number of cyclone separation units may be offset by the interlayer flow resistance, and even cause an increase in the overall pressure loss of the cyclone separation device. It can be seen that the design focus of the multi-layer cyclone separation structure is not simply to increase the number of cyclone separation units, but to coordinate the space occupation of the cyclone separation units and the air flow space.

[0046] Based on the above understanding, the present disclosure designs the arrangement of the cyclone separation units and the interlayer air flow organization as an interrelated whole. The cyclone separation device forms multiple separation levels by using the axial space, and improves the arrangement density of the cyclone separation units within the limited projection range through the space avoidance between different levels. Different levels do not adopt a completely corresponding and densely packed arrangement method, but adjust the arrangement quantity and occupancy relationship of the cyclone separation units according to the air flow distribution requirements. While increasing the parallel separation branches, a continuous flow space is reserved for the air flow.

[0047] The reserved flow space can receive the air flow that does not directly enter the outer separation branch, and provide a region for the turning, diffusion and redistribution of this part of the air flow. After passing through this region, the air flow enters the corresponding cyclone separation branch, which can reduce the local high-speed air flow generated by the sudden contraction of the flow channel or the mutual occlusion of the separation units. Multiple cyclone separation levels jointly bear the processing volume of the dust-containing air flow, dispersing the total air flow to more parallel separation branches, and reducing the average flow rate borne by a single separation branch. The cyclone separation device thus takes into account the number of cyclone separation units and the interlayer diversion conditions while maintaining a compact shape, and avoids increasing the density of the cyclone separation units at the cost of sacrificing the air flow space.

[0048] As shown Figures 1 to 4 In one embodiment of the present disclosure, a cyclone separation device 100 is provided, which includes a first cyclone separation component 1 and a second cyclone separation component 2 that are arranged in layers along the axis of the cyclone separation device 100. The axis of the cyclone separation device 100 can be understood as the extending direction of the overall central axis of the cyclone separation device 100, and the circumferential direction of the cyclone separation device 100 is the direction around this central axis. The first cyclone separation component 1 and the second cyclone separation component 2 are respectively located at different axial positions of the cyclone separation device 100, and the two form an upper and lower layered or front and rear layered structure by using the axial space of the cyclone separation device 100. The first cyclone separation component 1 and the second cyclone separation component 2 can be arranged at intervals in the axial direction, or can be partially overlapped, as long as the first cyclone cone 11 and the second cyclone cone 21 belong to different axial levels. Through the layered arrangement, the cyclone separation device 100 can break through the limitation of the number of cyclone cones in the single-layer plane arrangement, and increase the total number of cyclone cones while the radial dimension of the cyclone separation device 100 remains basically unchanged.

[0049] As shown in Figure 5 and Figure 6 Figure 5, the first cyclone separation component 1 includes a plurality of first cyclone cones 11, and the plurality of first cyclone cones 11 are arranged circumferentially along the circumference of the cyclone separation device 100. Each first cyclone cone 11 may be annularly distributed around the axis of the cyclone separation device 100, and a certain interval is reserved between two adjacent first cyclone cones 11. When observing the first cyclone separation component 1 along the axial direction of the cyclone separation device 100, each first cyclone cone 11 forms a corresponding outer contour projection in the projection plane perpendicular to the axial direction of the cyclone separation device 100, and the portion of the projection plane that is not occupied by the first cyclone cones 11 between two adjacent first cyclone cones 11 constitutes a projection gap area 12. The projection gap area 12 is used to describe the circumferential free space between adjacent first cyclone cones 11, and it corresponds to the actual three-dimensional space between adjacent first cyclone cones 11.

[0050] As shown in Figure 7 and Figure 8 Figure 6, the second cyclone separation component 2 includes a plurality of second cyclone cones 21, and the plurality of second cyclone cones 21 are arranged circumferentially along the circumference of the cyclone separation device 100. When the first cyclone cones 11 and the second cyclone cones 21 have the same size, the number of the second cyclone cones 21 is less than the number of the first cyclone cones 11, so that the interlayer space occupied by the second cyclone separation component 2 is smaller, and thus a larger diversion buffer space 3 can be reserved between the first cyclone separation component 1 and the second cyclone separation component 2. The second cyclone cones 21 and the first cyclone cones 11 are arranged in a circumferential offset manner, and the axial projection of each second cyclone cone 21 is at least partially located within the corresponding projection gap area 12. In other words, the second cyclone cones 21 are not completely axially aligned with the first cyclone cones 11, but are arranged by using the free space between adjacent first cyclone cones 11. This offset relationship can reduce the degree of overlap of the axial projections of the first cyclone cones 11 and the second cyclone cones 21, enabling the second cyclone separation component 2 to be embedded into the axial space where the first cyclone separation component 1 is located. The interlayer free space between the first cyclone separation component 1 and the second cyclone separation component 2 can form a diversion buffer space 3, providing a passage area for at least part of the air flow that does not enter the first cyclone cones 11 to flow towards the second cyclone cones 21, and allowing the air flow to complete turning, diffusion and redistribution before entering the second air inlet 211 of the second cyclone cones 21, so as to improve the air intake uniformity.

[0051] Since the number of second cyclone cones 21 is less than the number of first cyclone cones 11, the second cyclone cones 21 only occupy part of the projected gap area 12. The interlayer space corresponding to the remaining projected gap area 12 is not occupied by the second cyclone cones 21, and this part of the interlayer space forms the flow-guiding buffer space 3. The flow-guiding buffer space 3 is located between the first cyclone separation component 1 and the second cyclone separation component 2, and can allow airflow to pass through, turn, diffuse, and redistribute. If the same number of double-layer cyclone cones are used and densely arranged, the second cyclone cones 21 may fill the empty space between the first cyclone cones 11, narrowing the interlayer flow channel and generating local high-speed airflow. In this embodiment, by reducing the number of second cyclone cones 21, the total number of cyclone cones is increased while retaining the flow-guiding buffer space 3, so that the cyclone cone arrangement density matches the airflow flow space. The flow-guiding buffer space 3 can reduce the turbulence generated by the direct impact of airflow on the second cyclone separation component 2, alleviate interlayer congestion, and make the airflow entering different second cyclone cones 21 more uniform.

[0052] The flow-guiding buffer space 3 is at least a portion of the actual three-dimensional space corresponding to the projected gap region 12 along the axial direction. Its boundary can be defined by the outer wall of the adjacent first cyclone cone 11, the outer peripheral structure of the second cyclone separation component 2, and the barrier 5. The multiple second cyclone cones 21 do not completely occupy the interlayer space corresponding to each projected gap region 12, forming a free area for airflow. This free area constitutes the flow-guiding buffer space 3 and participates in the air intake organization of the second cyclone separation component 2.

[0053] The flow-guiding buffer space 3 is connected to the second air inlet 211 of the second cyclone cone 21. The airflow entering the flow-guiding buffer space 3 can turn and diffuse within a larger interlayer space before flowing to the second air inlet 211. The flow-guiding buffer space 3 can reduce the abrupt flow changes when the airflow enters the second air inlet 211 from the air inlet channel 13, so that the airflow from different air inlet channels 13 is buffered and redistributed before entering the second cyclone cone 21.

[0054] The first cyclone separator 1 and the second cyclone separator 2 can be connected in parallel to process the dust-laden airflow. The dust-laden airflow entering the cyclone separator 100 is divided into two parts: one part enters the first cyclone cone 11, and the other part passes through the guide buffer space 3 and enters the second cyclone cone 21. The first cyclone cone 11 and the second cyclone cone 21 respectively complete the separation of fine dust and send the purified airflow to the clean air side of the cyclone separator 100. By increasing the number of parallel cyclone cones, the cyclone separator 100 can expand the total flow area and reduce the average flow rate borne by a single cyclone cone. The first cyclone cone 11 and the second cyclone cone 21 can still maintain a relatively small size to maintain the centrifugal force required for cyclone separation. This layout utilizes the axial space and circumferential clearance of the cyclone separator 100 to balance the number of cyclone cones, airflow, separation capacity, and interlayer guide conditions within a limited external dimension.

[0055] In one exemplary embodiment, the reference Figure 3 As shown, the cyclone separator 100 has an air intake space 4 located outside the flow buffer space 3. Here, "outside" refers to the side radially away from the axis of the cyclone separator 100. The air intake space 4 may surround at least a portion of the outer periphery of the first cyclone separator assembly 1, or it may be defined by the outer shell of the cyclone separator 100, the outer peripheral surface of the first cyclone separator assembly 1, and adjacent mounting structures. The air intake space 4 receives the dust-laden airflow after pre-separation or filtration and provides an air intake source for the first cyclone separator assembly 1 and the second cyclone separator assembly 2. The air intake space 4 has a circumferentially extending flow area, allowing the airflow entering the cyclone separator 100 to be dispersed to the locations of the plurality of first cyclone cones 11.

[0056] Each first cyclone cone 11 has a first air inlet 111, which is located on the side of the first cyclone cone 11 near the air intake space 4. The first air inlet 111 can be located on the outer peripheral wall of the first cyclone cone 11 or at the air intake structure at the upper end of the first cyclone cone 11. Each first air inlet 111 faces outwards from the guide buffer space 3, that is, the first air inlet 111 faces the air intake space 4, rather than towards the axis of the second cyclone separation assembly 2 or the cyclone separation device 100. The first air inlet 111 communicates with the air intake space 4, allowing the airflow in the air intake space 4 to enter the first air inlet 111 along a shorter path and then enter the corresponding first cyclone cone 11 through the first air inlet 111.

[0057] Multiple first air inlets 111 are distributed circumferentially around the cyclone separator 100, each supplying air to a first cyclone cone 11. As the airflow in the intake space 4 flows along the outer periphery of the first cyclone separator 1, it can enter the corresponding first air inlet 111 at different circumferential positions. The orientation and opening area of ​​the first air inlets 111 can be kept consistent, ensuring relatively uniform airflow conditions for the multiple first cyclone cones 11. Alternatively, the first air inlets 111 can adopt different opening areas and orientations according to the pressure distribution at different locations within the intake space 4 to compensate for differences in the airflow path length of each first cyclone cone 11.

[0058] The intake space 4 is located outside the flow-guiding buffer space 3, allowing the airflow in the intake space 4 to be split after reaching the first cyclone separator assembly 1. Part of the airflow directly enters the first cyclone cone 11 through the first air inlet 111, while another part of the airflow can pass over the first cyclone separator assembly 1 or enter the flow-guiding buffer space 3 through the channel between adjacent first cyclone cones 11. This structure avoids the first cyclone cone 11 and the second cyclone cone 21 sharing the same narrow inlet and provides the first cyclone separator assembly 1 with a more direct intake path. The first cyclone separator assembly 1 contains a large number of first cyclone cones 11, and multiple first air inlets 111 can share the main airflow in the intake space 4, thereby reducing the local velocity and pressure loss at a single first air inlet 111.

[0059] The first air inlet 111 is oriented towards the air intake space 4, which also facilitates cleaning the air intake area of ​​the first cyclone cone 11. The air intake space 4 is located on the outer periphery of the cyclone separator 100. After disassembling the cyclone separator 100 or opening the corresponding housing, the first air inlet 111 can be approached from the outside, reducing the problem of difficulty in cleaning after dust blockage. There can be no complex bends between the first air inlet 111 and the air intake space 4, so that hair, fibers and other debris are less likely to get stuck in the air intake path.

[0060] In one exemplary embodiment, the reference Figure 3 and Figure 4 As shown, each second cyclone cone 21 has a second air inlet 211, which is relatively close to the outer periphery of the second cyclone separation assembly 2, and is used to receive the dust-laden airflow located on the outer periphery of the second cyclone separation assembly 2. Each second air inlet 211 is arranged facing the outer side of the second cyclone separation assembly 2, so that the airflow can flow from the outer periphery of the second cyclone separation assembly 2 to the interior of the second cyclone cone 21. The outer side of the second cyclone separation assembly 2 refers to the direction radially away from the axis of the cyclone separation device 100.

[0061] The second air inlet 211 is closer to the axis of the cyclone separator 100 than the first air inlet 111. The first cyclone separator 1 is typically located in the outer peripheral region of the cyclone separator 100, and the second cyclone separator 2 is located inside the first cyclone separator 1 and on one axial side. The second air inlet 211 is correspondingly positioned at a smaller radial location. The first air inlet 111 and the second air inlet 211 form different radial levels, allowing the airflow entering the cyclone separator 100 to enter the outer first cyclone cone 11 and the inner second cyclone cone 21 respectively according to a preset flow path.

[0062] The second air inlet 211 is located relatively inward, allowing the second cyclone cone 21 to be arranged within the internal space enclosed by multiple first cyclone cones 11 or in the available space between adjacent first cyclone cones 11. With the second air inlet 211 facing outward from the second cyclone separator assembly 2, the airflow does not need to cross the main body of the second cyclone cone 21 to enter the second air inlet 211. When the airflow enters the second air inlet 211 from the guide buffer space 3 or the diversion space 54, it can flow radially inward along the cyclone separator 100 and be converted into airflow rotating around the axis of the second cyclone cone 21 at the second air inlet 211.

[0063] The radial misalignment of the first air inlet 111 and the second air inlet 211 also reduces direct conflict between the two types of airflow. The airflow in the intake space 4 first reaches the outer periphery of the first cyclone separator 1, and a portion of the airflow enters the first cyclone cone 11 through the first air inlet 111. The airflow continuing to flow inward passes through the channel between adjacent first cyclone cones 11 and reaches the outer periphery of the second cyclone separator 2, and then enters the second cyclone cone 21 through the second air inlet 211. The two types of air inlets are located at different radial positions, giving the airflow distribution a spatial hierarchy.

[0064] The second air inlet 211 can be opened tangentially to the second cyclone cone 21, or a tangential air intake passage communicating with the second air inlet 211 can be provided on the outer periphery of the second cyclone cone 21. Multiple second air inlets 211 can have similar orientations, so that the rotating airflow within multiple second cyclone cones 21 has the same cyclone direction. The position of the second air inlet 211 can also be determined in conjunction with the tilt angle of the second cyclone cone 21, so that the second air inlet 211 is close to the flow buffer space 3 or the flow splitting space 54. This structure arranges the air intake area of ​​the second cyclone separation assembly 2 inside the first cyclone separation assembly 1, enabling air supply to the second cyclone cone 21 without significantly increasing the radial dimension of the cyclone separation device 100.

[0065] Specifically, refer to Figure 3 and Figure 4 As shown, the projection of the second air inlet 211 onto a projection plane perpendicular to the axial direction of the cyclone separator 100 is at least partially located within the region corresponding to the flow-guiding buffer space 3. When viewed along the axial direction of the cyclone separator 100, the second air inlet 211 and the flow-guiding buffer space 3 have at least partial overlap in the projection plane, such that the circumferential and radial positions of the second air inlet 211 correspond to those of the flow-guiding buffer space 3.

[0066] The flow-guiding buffer space 3 is formed by the interlayer area not occupied by the second cyclone cone 21, and it can receive dust-laden airflow from outside the cyclone separator 100. The second air inlet 211 is connected to the flow-guiding buffer space 3, and the airflow in the flow-guiding buffer space 3 can flow along the flow-guiding buffer space 3 to the location of the second cyclone separator 2, and enter the second cyclone cone 21 through the second air inlet 211. The second air inlet 211 and the flow-guiding buffer space 3 can be directly connected, or they can be indirectly connected through the gap or diversion space 54 located between the barrier 5 and the second cyclone separator 2.

[0067] The projection of the second air inlet 211 is at least partially located within the region corresponding to the guide buffer space 3, so that the airflow does not need to undergo a large-angle reversal when entering the second air inlet 211 from the guide buffer space 3. The airflow can approach the second air inlet 211 along the extension direction of the guide buffer space 3 and complete the turning near the second air inlet 211. This positional relationship can reduce the stagnation zone and backflow zone formed in front of the second air inlet 211, and reduce the local energy loss caused by the airflow impacting the outer wall of the second cyclone cone 21.

[0068] The projection of the second air intake 211 can be entirely located within the area corresponding to the flow buffer space 3, or only the inlet edge or the portion near the windward side can be located within this area. As long as the airflow in the flow buffer space 3 can smoothly enter the second air intake 211, the corresponding air intake function can be achieved.

[0069] The flow-guiding buffer space 3 provides a certain volume before the second air inlet 211, allowing the airflow passing through the area between adjacent first cyclone cones 11 to first diffuse and equalize pressure within the flow-guiding buffer space 3 before entering the second air inlet 211. After multiple airflow branches converge into the flow-guiding buffer space 3, local velocity differences can be mitigated. When the airflow passes through the flow-guiding buffer space 3 and enters each second air inlet 211, the flow rates obtained by each second cyclone cone 21 are more similar, which can reduce the differences in separation performance caused by excessively large or small flow rates in individual second cyclone cones 21.

[0070] In one exemplary embodiment, the reference Figure 5 and Figure 6 As shown, the first cyclone cone 11 includes a first windward wall 114 for guiding airflow to the first air inlet 111. The first windward wall 114 may be disposed on one side of the first air inlet 111 along the direction of airflow and extends from the outer peripheral wall of the first cyclone cone 11 into the air intake space 4. The first windward wall 114 and the outer peripheral wall of the first cyclone cone 11 define an air intake passage communicating with the first air inlet 111, so that the airflow in the air intake space 4 enters the first air inlet 111 along the first windward wall 114.

[0071] The first windward wall 114 extends along the tangential direction of the first cyclone cone 11, where the tangential direction refers to the direction tangent to the outer circumference of the first cyclone cone 11 or the cross-sectional profile of the cyclone separation chamber. The first windward wall 114 introduces the airflow into the first air inlet 111 along a direction close to the tangent of the first cyclone cone 11, giving the airflow a larger circumferential velocity component after entering the first cyclone cone 11. The airflow can quickly form a rotational motion around the axis of the first cyclone cone 11, reducing the collisions and turbulence generated when the radial air intake is converted into a rotating airflow.

[0072] The first windward wall 114 can also intercept the airflow flowing through the outer periphery of the first cyclone separator 1 and direct it to the first air inlet 111, and block airflow crosstalk between adjacent first air inlets 111. The extension length and inclination angle of the first windward wall 114 can be determined according to the area of ​​the first air inlet 111, the airflow direction in the air intake space 4, and the target swirling intensity. The first windward wall 114 can be a straight wall or a curved surface that is smoothly curved toward the first air inlet 111.

[0073] The second cyclone cone 21 includes a second windward wall 213 for guiding airflow to the second air inlet 211. The second windward wall 213 may be located between the second air inlet 211 and the diversion space 54, and extends tangentially along the second cyclone cone 21. The second windward wall 213 can guide the airflow flowing along the outer periphery of the second cyclone separator 2 to the corresponding second air inlet 211. After passing through the second windward wall 213, the airflow enters the second cyclone cone 21 tangentially, forming a rotating airflow inside the second cyclone cone 21.

[0074] The second windward wall 213 can also form a separation structure between multiple second air inlets 211 to prevent airflow from directly rushing laterally from one second air inlet 211 to an adjacent second air inlet 211. The air intake passage formed between the second windward wall 213 and the outer wall of the second cyclone cone 21 can gradually narrow along the airflow direction, so that the airflow is moderately accelerated before entering the second air inlet 211. The air intake passage can also maintain a constant cross-section to reduce local resistance.

[0075] The first windward wall 114 and the second windward wall 213 can be installed simultaneously, or one of them can be selected according to the specific flow channel structure of the cyclone separator 100. The first windward wall 114 mainly optimizes the airflow path from the intake space 4 to the first intake port 111, and the second windward wall 213 mainly optimizes the airflow path from the guide buffer space 3 or the diversion space 54 to the second intake port 211. Both cooperate with the first cyclone separator component 1 and the second cyclone separator component 2 respectively, so that both layers of cyclone cones can obtain stable tangential air intake conditions.

[0076] In one exemplary embodiment, the reference Figures 1 to 4As shown, each first cyclone cone 11 has a first air outlet 112, which is used to discharge the separated air flow in the first cyclone cone 11 and can be arranged at one end of the first cyclone cone 11 close to the top of the first cyclone separation component 1. The first air outlet 112 is arranged around the axis of the first cyclone cone 11, so that the purified air flow in the central area of the first cyclone cone 11 can leave from the first air outlet 112. The first air outlet 112 can be directly formed at the top of the first cyclone cone 11 or defined by an exhaust pipe extending into the first cyclone cone 11.

[0077] Refer Figure 1 and Figure 9 As shown, a barrier member 5 is provided at the top of the first cyclone separation component 1. The barrier member 5 is used to separate the clean air discharge area of the first cyclone cone 11 from the intake area of the second cyclone separation component 2. The barrier member 5 includes a cover plate portion 51 and a barrier portion 52. The cover plate portion 51 is disposed at each first air outlet 112 and covers the top of the first cyclone separation component 1. The cover plate portion 51 can be in the shape of an annular plate, a disc, or a special-shaped plate adapted to the arrangement contour of the plurality of first cyclone cones 11.

[0078] The cover plate portion 51 is provided with air holes 53 at positions corresponding to the first air outlets 112. Each air hole 53 is respectively connected to a first air outlet 112, so that the purified air flow in the first cyclone cone 11 can be discharged through the air holes 53 in sequence. The area of the cover plate portion 51 other than the air holes 53 closes the top of the first cyclone separation component 1, preventing the unseparated air flow in the intake space 4 or the diversion buffer space 3 from bypassing the first cyclone cone 11 and directly entering the clean air side. A gasket, a sealing ring or a crimping structure can be provided between the cover plate portion 51 and the first cyclone cone 11 to keep the first air outlets 112 and the corresponding air holes 53 in sealed connection.

[0079] The barrier portion 52 surrounds the outer periphery of the second cyclone separation component 2. The barrier portion 52 can extend from the cover plate portion 51 towards the second cyclone separation component 2 and form a continuous annular wall, a segmented annular wall or a cylindrical structure. The barrier portion 52 is located between the air holes 53 and the second cyclone separation component 2, separating the purified air flow discharged from the first cyclone cone 11 from the dust-containing air flow received by the second cyclone cone 21 in space.

[0080] Without the barrier 52, the high-speed purified airflow discharged from the first outlet 112 might flow directly towards the vicinity of the second inlet 211, disrupting the inlet pressure field of the second cyclone separator 2. Some of the purified airflow might also be repeatedly drawn in by the second cyclone cone 21. The barrier 52 restricts the airflow discharged from the first cyclone cone 11 from diffusing to the outer periphery of the second cyclone separator 2, allowing the purified airflow to leave the cyclone separator 100 along a preset clean air channel. The dust-laden airflow is located on the side of the barrier 52 closest to the second cyclone separator 2 and enters the second cyclone cone 21 through the second inlet 211.

[0081] The cover portion 51 and the barrier portion 52 can be integrally formed or manufactured separately and then fixedly connected. The barrier 5 can be fixedly connected to the first cyclone separator assembly 1 or connected to the outer shell or clean air cover of the cyclone separator device 100. By separating the clean air side from the air inlet side of the second cyclone separator assembly 2, the barrier 5 keeps the first cyclone separator assembly 1 and the second cyclone separator assembly 2 in a parallel and separated relationship, avoiding unexpected crossflow between the two cyclone cones.

[0082] Specifically, refer to Figure 1 and Figure 2 As shown, a diversion space 54 is formed between the barrier portion 52 and the second cyclone separator 2. The barrier portion 52 is arranged around the second cyclone separator 2, and a radial distance is maintained between the inner wall of the barrier portion 52 and the outer peripheral surface of the second cyclone separator 2. This radial distance extends circumferentially along the second cyclone separator 2 and forms the diversion space 54. The diversion space 54 can be a continuous ring shape, or it can be divided into multiple local diversion zones by the dividing ribs on the barrier portion 52.

[0083] The flow splitting space 54 is connected to the flow guiding buffer space 3 and each of the second air inlets 211. The airflow in the flow guiding buffer space 3 can enter the flow splitting space 54 through the gap between the barrier 5 and the second cyclone separator 2. This gap can be set at one end of the barrier 52 near the first cyclone separator 1, or it can be formed by a circumferential notch or radial opening on the barrier 52. After the airflow enters the gap from the flow guiding buffer space 3, it reaches the outer periphery of the second cyclone separator 2 and flows circumferentially within the flow splitting space 54.

[0084] Multiple second air inlets 211 are respectively located on the outer side of different second cyclone cones 21 and face the diversion space 54. The airflow entering the diversion space 54 can be diverted to different second air inlets 211 according to the pressure state at each second air inlet 211. The diversion space 54 is equivalent to an air intake distribution chamber shared by multiple second cyclone cones 21, so that the airflow from the guide buffer space 3 is collected and redistributed before entering the second cyclone cones 21.

[0085] The flow-guiding buffer space 3 primarily provides the interlayer volume required for airflow deflection and diffusion, while the flow-dividing space 54 primarily provides the flow area for circumferentially distributing airflow along the second cyclone separator 2. When connected in series, the airflow first enters the flow-guiding buffer space 3 from the intake space 4 via the intake channel 13, then passes through the gaps in the flow-guiding buffer space 3 into the flow-dividing space 54, and finally enters each of the second air inlets 211 from the flow-dividing space 54. This airflow path prevents the high-speed airflow in the intake space 4 from directly impacting the second air inlets 211.

[0086] Since the number of second cyclone cones 21 is less than the number of first cyclone cones 11, the number of air intake channels 13 entering the flow-guiding buffer space 3 can be greater than the number of second air intakes 211. The flow-dividing space 54 can merge and redistribute the airflow from multiple air intake channels 13, reducing the local flow differences caused by the one-to-one correspondence between the second air intakes 211 and the air intake channels 13. Even if a certain air intake channel 13 receives more airflow, the airflow can still flow along the flow-dividing space 54 to other second air intakes 211.

[0087] The barrier 52 also defines the outer boundary of the diversion space 54, making it difficult for the dust-laden airflow in the diversion space 54 to enter the clean air area corresponding to the first air outlet 112. The second cyclone separator 2 defines the inner boundary of the diversion space 54 and receives airflow through multiple second air inlets 211. This structure combines the barrier function with the air intake distribution function, separating the clean air outlet of the first cyclone cone 11 and the dust-laden airflow inlet of the second cyclone cone 21, while also establishing a surrounding air intake condition for the second cyclone separator 2.

[0088] In one exemplary embodiment, the reference Figure 3 and Figure 5 As shown, an air intake channel 13 is formed between two adjacent first cyclone cones 11. Multiple first cyclone cones 11 are arranged at circumferential intervals along the cyclone separator 100. A radially penetrating gap is maintained between the outer peripheral walls of adjacent first cyclone cones 11, which forms the air intake channel 13. The air intake channel 13 can also be defined by the outer peripheral walls of adjacent first cyclone cones 11, the support structure of the first cyclone separator assembly 1, and the guide wall.

[0089] The side of the air intake channel 13 closest to the outer periphery of the cyclone separator 100 is connected to the air intake space 4, and the side closest to the axis of the cyclone separator 100 is connected to the flow guide buffer space 3. After the airflow in the air intake space 4 reaches the first cyclone separator 1, it can flow along the air intake channel 13 from the outside of the first cyclone separator 1 to the inside of the first cyclone separator 1, and enter the flow guide buffer space 3 between the first cyclone separator 1 and the second cyclone separator 2.

[0090] The intake channel 13 creates two parallel intake paths for the airflow in the intake space 4. One portion of the airflow enters the first cyclone cone 11 through the first intake port 111, and this portion is separated by the first cyclone separator 1. The other portion of the airflow does not enter the first intake port 111, but instead enters the flow guide buffer space 3 through the intake channel 13, and then flows from the flow guide buffer space 3 to the second cyclone separator 2. This allows the first cyclone separator 1 and the second cyclone separator 2 to be supplied with air from the same intake space 4, but to have distinct intake paths.

[0091] The air intake channel 13 can be configured to correspond to the projected gap area 12 where the second cyclone cone 21 is not provided, allowing airflow to directly enter the more spacious flow-guiding buffer space 3 from between adjacent first cyclone cones 11. The air intake channel 13 can also correspond to the projected gap area 12 where the second cyclone cone 21 is provided, as long as the air intake channel 13 still has an effective flow cross-section leading to the flow-guiding buffer space 3. Multiple air intake channels 13 are distributed circumferentially along the cyclone separator 100, enabling airflow to be delivered to the flow-guiding buffer space 3 from multiple circumferential positions.

[0092] The intake channel 13 utilizes the existing arrangement intervals between adjacent first cyclone cones 11 to establish the intake path of the second cyclone separator 2, eliminating the need for an additional independent duct outside the first cyclone separator 1. This structure can shorten the airflow path from the intake space 4 to the guide buffer space 3, reduce the number of internal components of the cyclone separator 100, and allow the empty space between the first cyclone cones 11 to participate in airflow distribution.

[0093] In one exemplary embodiment, the reference Figure 3 and Figure 10 As shown, the axis of the first cyclone cone 11 forms a first angle with the axis of the cyclone separator 100, and the axis of the second cyclone cone 21 forms a second angle with the axis of the cyclone separator 100. The axis of the first cyclone cone 11 refers to the central axis of the cyclone separation chamber or the conical body of the first cyclone cone 11, and the axis of the second cyclone cone 21 refers to the central axis of the cyclone separation chamber or the conical body of the second cyclone cone 21.

[0094] The first included angle is smaller than the second included angle, resulting in the second cyclone cone 21 having a greater degree of inclination than the first cyclone cone 11. The first included angle can be 0°, in which case the axis of the first cyclone cone 11 is parallel to the axis of the cyclone separator 100, and the second included angle is greater than 0°. The first included angle and the second included angle can also both be greater than 0°, with the first cyclone cone 11 and the second cyclone cone 21 adopting different inclination angles.

[0095] The first cyclone cones 11 are arranged along the outer periphery of the cyclone separator 100. The use of a smaller first included angle allows the multiple first cyclone cones 11 to maintain a relatively regular ring arrangement in the circumferential direction, and facilitates the first air inlet 111 to face the outer air intake space 4. The first dust outlet 113 of the first cyclone cone 11 can also face downward in a direction close to the axial direction of the cyclone separator 100, making it easier for the first dust outlet 113 to connect with the guide pipe 74 or the fine dust chamber 721.

[0096] The second cyclone cone 21 is located inside the first cyclone separation assembly 1 and on one axial side. The larger second included angle allows the main body of the second cyclone cone 21 to tilt towards the space between the adjacent first cyclone cones 11. A portion of the second cyclone cone 21 can enter the hollow region 15 enclosed between the first cyclone cones 11, further compressing the axial distance between the first cyclone separation assembly 1 and the second cyclone separation assembly 2.

[0097] Different tilt angles can also improve the spatial avoidance relationship between the first cyclone cone 11 and the second cyclone cone 21. The first cyclone cone 11 is relatively upright, and the second cyclone cone 21 is tilted and embedded in the hollow area 15 enclosed by the first cyclone cone 11, which can reduce the interference between the outer walls of the two types of cyclone cones. The first included angle and the second included angle can be determined according to the length of the cyclone cone, the diameter of the cyclone cone, the height of the cyclone separation device 100 and the size of the flow guiding buffer space 3. It is only necessary to keep the first included angle smaller than the second included angle.

[0098] In one exemplary embodiment, the reference Figure 3 and Figure 4 As shown, the ratio of the number of first cyclone cones 11 to the number of second cyclone cones 21 is 4:3. This ratio ensures that the number of second cyclone cones 21 is less than the number of first cyclone cones 11, while still allowing the second cyclone separation assembly 2 to maintain a large total flow capacity. For every four first cyclone cones 11 in the first cyclone separation assembly 1, the second cyclone separation assembly 2 has three corresponding second cyclone cones 21. The second cyclone cones 21 do not occupy all the projected gap areas 12 between adjacent first cyclone cones 11; a portion of the projected gap areas 12 can be reserved as flow-guiding buffer spaces 3.

[0099] Preferably, there are eight first cyclone cones 11 and six second cyclone cones 21. The eight first cyclone cones 11 are arranged circumferentially along the cyclone separation device 100, forming eight adjacent intervals in the first cyclone separation assembly 1. The six second cyclone cones 21 are arranged circumferentially along the second cyclone separation assembly 2, and each utilizes a portion of its projected gap area 12. The projected gap area 12 not occupied by the six second cyclone cones 21 forms a flow guiding buffer space 3.

[0100] Eight first cyclone cones 11 and six second cyclone cones 21 can jointly form 14 parallel cyclone separation branches. Compared with the single-layer structure with only eight first cyclone cones 11, the total number of cyclone cones increases, and the total intake area and total flow-through capacity of the cyclone separation device 100 are correspondingly improved. After the total flow is distributed to more cyclone cones, the average flow rate borne by each cyclone cone can be reduced, which helps to control the flow velocity and local pressure loss at a single air inlet.

[0101] If the number of the second cyclone cones 21 is the same as that of the first cyclone cones 11, the projection gap area 12 may be overly occupied by the second cyclone cones 21, and the space for air flow turning and distribution between the first cyclone separation component 1 and the second cyclone separation component 2 is reduced. If the number of the second cyclone cones 21 is too small, although the diversion space increases, the newly added flow-through area is limited. The quantity ratio of 4:3 forms a relatively reasonable configuration between the total number of cyclone cones and the interlayer diversion space.

[0102] The first cyclone cones 11 and the second cyclone cones 21 can have the same size, so that the same mold and similar aerodynamic parameters can be adopted for each cyclone cone; the first cyclone cones 11 and the second cyclone cones 21 can also have different sizes. The number of the first cyclone cones 11 and the number of the second cyclone cones 21 are not limited to eight and six, and can also be four and three, twelve and nine, or other combinations that satisfy the 4:3 ratio. The specific quantity can be determined according to the outer diameter of the cyclone separation device 100, the diameter of the cyclone cone, the target air volume, and the installation space of the cleaning device.

[0103] As Figure 10 shown, an embodiment of the present disclosure further provides a dust collection device, which includes a dust cup 6 and the aforementioned cyclone separation device 100 provided in the dust cup 6. The dust cup 6 is used to form a flowing space for the dust-containing air flow and a dust collection space. The dust cup 6 can be in a cylindrical shape, a conical cylinder shape, or a special-shaped cylinder shape that matches the structure of the cleaning device main body. The dust cup 6 has a dust-containing air flow inlet and a purified air flow outlet. The dust-containing air flow enters the dust cup 6 from the dust-containing air flow inlet, and after passing through the internal structure of the dust cup 6 and the cyclone separation device 100, it flows out from the purified air flow outlet.

[0104] The cyclone separation device 100 can be arranged at the top of the dust cup 6, inside the dust cup 6, or at a position of the dust cup 6 close to the purified air flow outlet. The cyclone separation device 100 is fixedly connected or detachably connected to the dust cup 6. The detachable connection method facilitates the user to take out the cyclone separation device 100 and remove the sundries wrapped around the first cyclone cone 11, the second cyclone cone 21, or the air inlet passage 13.

[0105] After the dusty air flow enters the dust cup 6, a swirling air flow can be formed in the dust cup 6 first. Dust with a larger mass or larger particle size is separated from the air flow under the action of centrifugal force, gravity, and the interception of the filtering structure, and falls into the coarse dust collection area of the dust cup 6. The air flow after preliminary separation enters the intake space 4 of the cyclone separation device 100, and then enters the first cyclone separation component 1 and the second cyclone separation component 2 respectively.

[0106] The first cyclone separation component 1 and the second cyclone separation component 2 further separate the fine dust in the air flow. The fine dust discharged from the first cyclone cone 11 and the second cyclone cone 21 enters the fine dust collection area provided in the dust cup 6, and the purified air flow discharged from the first cyclone cone 11 and the second cyclone cone 21 flows to the purified air flow outlet of the dust cup 6.

[0107] The dust cup 6 can be provided with an openable bottom cover 61. After the user opens the bottom cover 61, the coarse dust and fine dust can be discharged. The dust cup 6 can also be provided with a separated coarse dust chamber and a fine dust chamber 721 to separately collect the dust generated in different separation stages. The cooperation relationship between the cyclone separation device 100 and the dust cup 6 is not limited to a specific installation direction, as long as the dust cup 6 can supply the dusty air flow to the cyclone separation device 100 and receive the dust discharged from the cyclone separation device 100.

[0108] In an exemplary embodiment, as Figure 10 shown, a filtering component 7 is provided in the dust cup 6. The filtering component 7 is arranged in the upstream area before the dusty air flow enters the cyclone separation device 100, and is used to intercept hair, fibers, and larger particles in the air flow, and support the cyclone separation device 100 and the fine dust collection structure. The filtering component 7 includes a mounting frame 71, a fine dust cylinder 72, and a filter screen 73. The filtering component 7 can remove large-size debris that is likely to block the first air inlet 111, the second air inlet 211, and the air intake passage 13 before the cyclone separation device 100.

[0109] As Figure 11 shown, the mounting frame 71 includes a top structure 711, a bottom structure 712, and connecting arms 713 connecting the top structure 711 and the bottom structure 712. The top structure 711 and the bottom structure 712 are arranged at intervals along the axis of the dust cup 6. The top structure 711 is used to install or support the cyclone separation device 100, and the bottom structure 712 is used to support the lower part of the filtering component 7. The connecting arms 713 extend along the axis of the dust cup 6 and connect the top structure 711 and the bottom structure 712 into a whole.

[0110] A plurality of connecting arms 713 can be provided. The plurality of connecting arms 713 are distributed at intervals along the circumference of the mounting frame 71, reducing the blockage of the air flow while ensuring the structural strength of the mounting frame 71. The connecting arms 713 can be strip-shaped, plate-shaped, or arc-shaped. The connecting arms 713 and the top structure 711 and the bottom structure 712 can be integrally formed, or can be connected by clamping, welding, or fasteners.

[0111] A perforated structure 714 is formed between the top structure 711 and the bottom structure 712. This perforated structure 714 refers to the open area reserved by the mounting frame 71 between the top structure 711 and the bottom structure 712, through which airflow can enter the inside of the mounting frame 71 from the outside. The perforated structure 714 can be formed by the interval between adjacent connecting arms 713, or it can be formed by the openings on the connecting arms 713.

[0112] A filter screen 73 surrounds the outer periphery of the perforated structure 714. The filter screen 73 can be cylindrical and surround the mounting frame 71, and is fixed to the top structure 711, the bottom structure 712, or the connecting arm 713. The filter screen 73 covers the perforated structure 714, so that airflow needs to pass through the filter screen 73 before entering the inner side of the mounting frame 71. The mesh size of the filter screen 73 is determined according to the size of the particles to be intercepted, and the filter screen 73 can be made of metal mesh, plastic mesh, perforated plate, or other porous materials.

[0113] The mounting bracket 71 provides support for the filter screen 73, preventing it from deforming inward under negative pressure. The perforated structure 714 keeps most of the area of ​​the filter screen 73 open, reducing the obstruction of the effective flow area of ​​the filter screen 73 by the mounting bracket 71. The fine dust collection cylinder 72 can be located in the middle of the mounting bracket 71 and supported by the bottom structure 712 or the top structure 711. The filter screen 73 is arranged around the fine dust collection cylinder 72, allowing the airflow passing through the filter screen 73 to flow between the filter screen 73 and the fine dust collection cylinder 72.

[0114] Specifically, refer to Figure 10 and Figure 11 As shown, a fine dust chamber 721 is formed inside the fine dust cylinder 72, extending axially along the dust cup 6. The fine dust cylinder 72 can be cylindrically connected to the bottom structure 712 of the mounting frame 71, and the internal space of the fine dust cylinder 72 constitutes the fine dust chamber 721. The fine dust chamber 721 is used to receive and store the fine dust separated by the first cyclone cone 11 and the second cyclone cone 21. The fine dust chamber 721 extends axially along the dust cup 6, allowing the fine dust to deposit towards the bottom of the fine dust chamber 721 under the action of gravity.

[0115] The top of the fine dust chamber 721 has an opening, and a guide tube 74 communicating with the top opening of the fine dust chamber 721 is provided inside the filter screen 73. The guide tube 74 is arranged axially along the dust cup 6 and is located in the internal space enclosed by the filter screen 73. The lower end of the guide tube 74 is connected to the top opening of the fine dust chamber 721, and the upper end of the guide tube 74 is connected to the dust discharge structure of the first cyclone separation assembly 1 and the second cyclone separation assembly 2.

[0116] The interior of the guide tube 74 forms a fine dust conveying channel, through which the fine dust discharged from the first cyclone cone 11 and the second cyclone cone 21 enters the fine dust chamber 721. The tube wall of the guide tube 74 separates the fine dust conveying channel from the airflow space outside the guide tube 74, reducing the possibility of the fine dust being re-entrained by the surrounding airflow during conveying.

[0117] A primary separation chamber 75 is formed between the filter screen 73 and the outer wall of the guide tube 74. The primary separation chamber 75 is arranged around the guide tube 74, located inside the filter screen 73, and is separated from the secondary separation chamber used for cyclone separation and dust removal. The dust-laden airflow enters the primary separation chamber 75 after passing through the filter screen 73, and the airflow in the primary separation chamber 75 continues to flow into the air intake space 4 of the cyclone separator 100. The primary separation chamber 75 is separated from the fine dust chamber 721, so that the airflow cannot directly enter the fine dust chamber 721 from the primary separation chamber 75.

[0118] The bottom of the fine dust chamber 721 can be sealed by the bottom cover 61 of the dust cup 6. After opening the bottom cover 61 of the dust cup 6, the fine dust in the fine dust chamber 721 can be discharged from the bottom. The guide tube 74 can be integrally formed with the fine dust cylinder 72, or it can be sealed to the fine dust cylinder 72. This structure gives the fine dust discharged from the cyclone separator 100 an independent conveying and collection path, and avoids the fine dust from crossing with the airflow entering the cyclone separator 100.

[0119] In one exemplary embodiment, the reference Figure 10 As shown, the first cyclone separator 1 is fixed to the top structure 711 of the mounting bracket 71. The top structure 711 is located at one end of the filter assembly 7 near the cyclone separator 100 and forms a support for mounting the first cyclone separator 1. The first cyclone separator 1 can be fixed to the top structure 711 by means of clips, screws, screws, or integral molding. The top structure 711 bears the weight of the first cyclone separator 1 and the second cyclone separator 2 and maintains the position of the cyclone separator 100 relative to the filter assembly 7.

[0120] Each first cyclone cone 11 has a first dust outlet 113, which is located at the end of the first cyclone cone 11 opposite to the first air outlet 112, and is usually located at the conical constriction end of the first cyclone cone 11. The fine dust separated inside the first cyclone cone 11 moves along the inner wall of the first cyclone cone 11 towards the first dust outlet 113 and is discharged through the first dust outlet 113.

[0121] Each first cyclone cone 11 has a first air inlet 111 connected to a first-stage separation chamber 75 via an air intake space 4. Airflow passing through the filter 73 and entering the first-stage separation chamber 75 can flow into the air intake space 4 located on the outer periphery of the first cyclone separation assembly 1, and then enter the first cyclone cone 11 through the first air inlet 111. The first-stage separation chamber 75 can directly constitute the air intake space 4, or it can be connected to an independently formed air intake space 4.

[0122] Each first dust outlet 113 of the first cyclone cone 11 is connected to the guide pipe 74. The fine dust discharged from the first dust outlet 113 enters the interior of the guide pipe 74 and then enters the fine dust chamber 721 along the guide pipe 74. The multiple first dust outlets 113 can be connected to the guide pipe 74 individually, or they can be connected to a dust collection space located at the top of the guide pipe 74, and then the dust is discharged to the guide pipe 74 from the dust collection space.

[0123] The first air inlet 111 is connected to the primary separation chamber 75, and the first dust outlet 113 is connected to the guide pipe 74, thus separating the air intake path and the dust discharge path of the first cyclone cone 11. The airflow in the primary separation chamber 75 enters the first cyclone cone 11 through the first air inlet 111, while the fine dust separated by the first cyclone cone 11 enters the guide pipe 74 through the first dust outlet 113. The wall of the guide pipe 74 blocks the airflow in the primary separation chamber 75, preventing the fine dust discharged from the first dust outlet 113 from directly returning to the primary separation chamber 75.

[0124] Specifically, refer to Figure 5 and Figure 10 As shown, the first cyclone separator 1 includes a docking seat 14 surrounding each of the first dust outlets 113. The docking seat 14 is located on the side of the first cyclone separator 1 near the guide pipe 74 and is arranged around the multiple first dust outlets 113. The docking seat 14 can be in the shape of an annular cylinder, or it can be formed into a corresponding irregular wall according to the arrangement contour of the multiple first dust outlets 113.

[0125] The interior of the docking seat 14 forms a dust collection space that communicates with each of the first dust outlets 113. The fine dust separated by the first cyclone cone 11 enters the interior of the docking seat 14 from the first dust outlets 113 and is guided by the docking seat 14 to the guide tube 74. The docking seat 14 concentrates the fine dust discharged from multiple first dust outlets 113 to the top of the guide tube 74, which reduces the structural complexity of setting up an independent guide tube for each first dust outlet 113.

[0126] The mating seat 14 is sealed to the top opening of the guide tube 74. The mating seat 14 can be inserted into the top opening of the guide tube 74, or it can be sleeved on the outer periphery of the top of the guide tube 74, or it can be connected to the guide tube 74 by end face contact. A sealing ring, sealing gasket, sealing lip, or interference fit structure can be provided between the mating seat 14 and the guide tube 74.

[0127] The sealed connection prevents fine dust inside the docking seat 14 from leaking into the primary separation chamber 75, and also prevents airflow in the primary separation chamber 75 from entering the guide pipe 74 from the connection point between the docking seat 14 and the guide pipe 74. If airflow in the primary separation chamber 75 enters the guide pipe 74, it may disturb the fine dust falling along the guide pipe 74 and carry the fine dust back to the cyclone separator 100. After the docking seat 14 and the guide pipe 74 are sealed together, a relatively independent dust discharge channel is formed inside the guide pipe 74.

[0128] The docking seat 14 can also position the first cyclone separator 1. When the first cyclone separator 1 is installed on the top of the mounting bracket 71, the docking seat 14 mates with the top of the guide tube 74, ensuring that the radial center of the first cyclone separator 1 corresponds to the radial center of the filter assembly 7. The top structure 711 provides axial support, and the mating seat 14 and the guide tube 74 restrict radial movement, making the installation of the first cyclone separator 1 more stable. The docking seat 14 can be integrally formed with the first cyclone cone 11, or it can be fixed as an independent component on the outer periphery of multiple first dust outlets 113.

[0129] Furthermore, participants Figure 6 As shown, a hollow region 15, formed by a plurality of first cyclone cones 11, is formed in the middle of the first cyclone separation assembly 1. After the plurality of first cyclone cones 11 are arranged circumferentially along the cyclone separation device 100, the side of them closest to the axis of the cyclone separation device 100 together forms the hollow region 15. The hollow region 15 extends axially along the cyclone separation device 100 and corresponds to the center position of the guide tube 74 or the fine dust cylinder 72.

[0130] A connecting pipe 16 is provided in the hollow region 15. The connecting pipe 16 is used to receive the fine dust discharged from the second cyclone cone 21 and guide the fine dust to the guide pipe 74. The connecting pipe 16 is located in the middle of the first cyclone separation assembly 1, without occupying the air intake space 4 on the outer periphery of the first cyclone separation assembly 1, and without increasing the radial dimension of the cyclone separation device 100.

[0131] Each second cyclone cone 21 has a second dust outlet 212, which is located at the conical constriction end of the second cyclone cone 21. Fine dust separated inside the second cyclone cone 21 moves along the inner wall of the second cyclone cone 21 to the second dust outlet 212 and is discharged from the second dust outlet 212. Multiple second dust outlets 212 can be arranged facing the hollow region 15 to shorten the connection distance between the second dust outlet 212 and the connecting pipe 16.

[0132] The connecting pipe 16 is connected to each of the second dust outlets 212 and the guide pipe 74. The dust discharged from the second dust outlet 212 enters the connecting pipe 16 and is guided by the connecting pipe 16 to the guide pipe 74, and then discharged into the fine dust chamber 721 along the guide pipe 74. The dust discharge path of the second cyclone cone 21 is separated from the air intake path of the second cyclone cone 21. The second air intake 211 receives the dust-laden airflow from the outer periphery of the second cyclone separation component 2, while the second dust outlet 212 discharges dust into the fine dust chamber 721 through the central connecting pipe 16.

[0133] A sealing structure can be provided between the connecting pipe 16 and the second dust outlet 212. The sealing structure can prevent airflow from the primary separation chamber 75 or the flow buffer space 3 from entering the connecting pipe 16 and reduce the leakage of fine dust in the connecting pipe 16. The inner wall of the connecting pipe 16 can smoothly transition along the direction of fine dust movement, reducing the possibility of fine dust accumulating at the corners of the connecting pipe 16.

[0134] Fine dust discharged from the first cyclone cone 11 enters the guide pipe 74 through the first dust outlet 113, and fine dust discharged from the second cyclone cone 21 enters the guide pipe 74 through the connecting pipe 16. The two sets of fine dust can be discharged together into the fine dust chamber 721 through the guide pipe 74. The hollow area 15 is used to accommodate the connecting pipe 16, so that the central empty space of the cyclone separator 100 is utilized and a compact double-layer cyclone cone dust discharge structure is formed.

[0135] This disclosure also provides a cleaning device including the aforementioned dust collection device. The cleaning device can be a vacuum cleaner, a robotic vacuum cleaner, or other device that collects dust using negative pressure airflow. The dust collection device is used to separate and store the dust sucked in by the cleaning device.

[0136] The cleaning equipment may also include a main housing, an airflow generating assembly, an intake channel, and an exhaust channel. The airflow generating assembly includes a motor and a fan driven by the motor, with the fan connected to the purified airflow outlet of the dust collection device. When the motor drives the fan to operate, a negative pressure is created inside the dust collection device, and the external dust-laden airflow enters the dust cup through the suction inlet and intake channel of the cleaning equipment.

[0137] The dust-laden airflow entering the dust cup first passes through the pre-separation structure and filter components inside the dust cup. Larger dust particles are collected in the coarse dust area of ​​the dust cup, and the airflow passing through the filter screen enters the primary separation chamber. The airflow in the primary separation chamber enters the cyclone separator and flows into the first cyclone separator component and the second cyclone separator component, respectively. The first cyclone cone and the second cyclone cone further separate the fine dust in the airflow.

[0138] The dust collection unit is detachable from the main housing, allowing users to remove it, open the dust cup bottom cover, and empty the dust from the coarse and fine dust chambers. The cleaning equipment can also include a filter downstream of the cyclone separator to trap fine particles that are not separated by the cyclone separator.

[0139] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0140] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cyclone separator, characterized in that, It includes a first cyclone separation component and a second cyclone separation component arranged in layers along the axial direction of the cyclone separation device; The first cyclone separation assembly includes a plurality of first cyclone cones arranged circumferentially along the cyclone separation device, and in the projection along the axial direction of the cyclone separation device, a projection gap region is formed between two adjacent first cyclone cones. The second cyclone separator assembly includes a plurality of second cyclone cones arranged circumferentially along the cyclone separator device. The number of second cyclone cones is less than the number of first cyclone cones. The second cyclone cones and the first cyclone cones are staggered circumferentially along the cyclone separator device. At least a portion of the projection of each second cyclone cone onto the axial direction of the cyclone separator device is located within the projection gap region. Specifically, a flow-guiding buffer space is formed between the first cyclone separator component and the second cyclone separator component, which is axially corresponding to the projected gap region and is not occupied by the second cyclone cone. The flow-guiding buffer space is connected to the air inlet of the second cyclone cone so that at least part of the airflow that does not enter the first cyclone cone enters the second cyclone cone through the flow-guiding buffer space.

2. The cyclone separator according to claim 1, characterized in that, The cyclone separator forms an air intake space located outside the flow-guiding buffer space; each of the first cyclone cones has a first air inlet, and each of the first air inlets is arranged facing the outside of the flow-guiding buffer space and communicating with the air intake space, so that the airflow in the air intake space can enter the first cyclone cone through the first air inlet.

3. The cyclone separator according to claim 2, characterized in that, Each of the second cyclone cones has a second air inlet, and each of the second air inlets is disposed facing the outside of the second cyclone separation assembly. The second air inlet is closer to the axis of the cyclone separation device than the first air inlet.

4. The cyclone separator according to claim 3, characterized in that, The projection of the second air inlet onto a projection plane perpendicular to the axial direction of the cyclone separator is at least partially located within the region corresponding to the flow-guiding buffer space. The second air inlet is connected to the flow-guiding buffer space so that the airflow in the flow-guiding buffer space can enter the second cyclone cone through the second air inlet.

5. The cyclone separator according to claim 3, characterized in that, The first cyclone cone includes a first windward wall for guiding airflow to the first air inlet, the first windward wall extending tangentially to the first cyclone cone; and / or, The second cyclone cone includes a second windward wall for guiding airflow to the second air inlet, the second windward wall extending along the tangential direction of the second cyclone cone.

6. The cyclone separator according to claim 3, characterized in that, Each of the first cyclone cones has a first air outlet, and the top of the first cyclone separation assembly is provided with a barrier, the barrier including a cover plate and a barrier portion; the cover plate covers each of the first air outlets and has an air outlet hole at a position corresponding to each of the first air outlets; the barrier portion surrounds the outer periphery of the second cyclone separation assembly and blocks the air outlet hole from the second cyclone separation assembly.

7. The cyclone separator according to claim 6, characterized in that, A diversion space is formed between the barrier and the second cyclone separator, and the diversion space is connected to the flow guide buffer space and each of the second air inlets. The airflow in the flow guide buffer space can enter the diversion space through the gap between the barrier and the second cyclone separator, and be diverted to each of the second air inlets by the diversion space.

8. The cyclone separator according to claim 2, characterized in that, An air intake channel is formed between two adjacent first cyclone cones. The air intake channel connects the air intake space and the flow guide buffer space, so that a part of the airflow in the air intake space enters the first cyclone cone through the first air intake port, and another part of the airflow enters the flow guide buffer space through the air intake channel.

9. The cyclone separator according to claim 1, characterized in that, The axis of the first cyclone cone forms a first angle with the axis of the cyclone separator, and the axis of the second cyclone cone forms a second angle with the axis of the cyclone separator, wherein the first angle is smaller than the second angle.

10. The cyclone separator according to claim 1, characterized in that, The ratio of the number of the first cyclone cones to the number of the second cyclone cones is 4:

3.

11. A dust collection device, characterized in that, It includes a dust cup and a cyclone separator disposed in the dust cup as described in any one of claims 1 to 10.

12. The dust collection device according to claim 11, characterized in that, The dust cup is equipped with a filter assembly, which includes a mounting frame, a fine dust cylinder, and a filter screen. The mounting frame includes a top structure, a bottom structure, and a connecting arm that connects the top structure and the bottom structure. A hollow structure is formed between the top structure and the bottom structure, and the filter screen is arranged around the outer periphery of the hollow structure.

13. The dust collection device according to claim 12, characterized in that, The fine dust cylinder has a fine dust chamber that extends axially along the dust cup. The inner side of the filter screen is provided with a guide tube that communicates with the top opening of the fine dust chamber. A primary separation chamber, which is separated from the secondary separation chamber, is formed between the filter screen and the outer wall of the guide tube.

14. The dust collection device according to claim 13, characterized in that, The first cyclone separator assembly is fixed to the top structure of the mounting bracket; each of the first cyclone cones has a first air inlet and a first dust outlet, the first air inlet of each of the first cyclone cones is connected to the first-stage separation chamber, and the first dust outlet of each of the first cyclone cones is connected to the guide pipe.

15. The dust collection device according to claim 14, characterized in that, The first cyclone separator includes a docking seat surrounding each of the first dust outlets, and the docking seat is sealed to the top opening of the guide tube.

16. The dust collection device according to claim 14, characterized in that, The first cyclone separator has a hollow region formed in the middle by a plurality of first cyclone cones, and a connecting pipe is provided in the hollow region; Each of the second cyclone cones has a second dust outlet. The connecting pipe is connected to each of the second dust outlets and the guide pipe respectively, so as to guide the dust discharged from each of the second dust outlets to the guide pipe and discharge it into the fine dust chamber through the guide pipe.

17. A cleaning device, characterized in that, Includes the dust collection device as described in any one of claims 11 to 16.

Images