A vacuum cleaning device

Abstract

The present invention relates to a vacuuming device, belonging to the technical field of household appliances, and is used to solve the problems of the existing vacuuming device having a relatively long length and relatively high noise. The vacuuming device of the present invention includes: a filtering device, which includes a motor assembly cavity and a plurality of cyclone cones, and the cyclone cones are arranged around the outside of the motor assembly cavity; a motor assembly, installed in the motor assembly cavity; a motor flow guide member, communicated with the motor assembly cavity, for guiding the fluid filtered by the filtering device into the motor assembly and discharging the fluid discharged by the motor assembly from the motor assembly cavity. The motor assembly of the present invention is installed inside the filtering device, which can effectively reduce the overall length of the vacuuming device, and the cyclone cones are arranged around the outside of the motor assembly, which can effectively reduce the noise and vibration during the operation of the motor assembly and improve the use experience of the vacuuming device.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to a dust collection device. Background Art

[0002] Currently, in order to achieve a good filtration effect, existing dust collection devices generally achieve this by setting up multiple filtration components. The motor assembly is located behind these filtration components so that these filtration components can achieve their respective filtration effects. However, this will make the overall length of the dust collection device too long, affecting the user experience of the dust collection device.

[0003] In addition, in order to ensure the filtration effect of the above-mentioned multiple filtration components, a motor with a relatively large power needs to be used. In this way, the motor will generate relatively high noise and large vibration during operation, further affecting the user experience of the dust collection device. Summary of the Invention

[0004] In view of the above analysis, embodiments of the present invention aim to provide a dust collection device to solve the problems of the existing dust collection device being too long and having a large amount of noise.

[0005] The present invention provides a dust collection device, including:

[0006] A filtering device, including a motor assembly cavity and a plurality of cyclone cones, and the cyclone cones are arranged around the outside of the motor assembly cavity;

[0007] A motor assembly, installed in the motor assembly cavity;

[0008] A motor flow guide member, communicating with the motor assembly cavity, for guiding the fluid filtered by the filtering device into the motor assembly and discharging the fluid discharged from the motor assembly out of the motor assembly cavity.

[0009] Further, the filtering device includes a first filtering component, a second filtering component, and a third filtering component arranged from front to back, and the second filtering component is provided with the motor assembly cavity and the cyclone cones;

[0010] The motor flow guide member is located downstream of the second filtering component;

[0011] The third filtering component is arranged around the outside of the motor flow guide member.

[0012] Further, the dust collection device further includes a housing, and an assembly cavity is provided inside the housing for assembling the filtering device, the motor assembly, and the motor flow guide member.

[0013] Further, the housing includes a dust collection cup, a middle cover part, and a rear end cover, and the dust collection cup, the middle cover part, and the rear end cover are butt-jointed in sequence to jointly form the assembly cavity;

[0014] The first filtering component and the second filtering component are installed in the dust collection cup;

[0015] The middle cover part surrounds the outside of the third filtering component, and the third filtering component surrounds the outside of the side wall of the motor flow guide member;

[0016] The rear end cover is connected to the rear end of the motor flow guide member.

[0017] Further, the side wall of the middle cover part gradually inclines inwards from front to back.

[0018] Further, a dust suction port is formed on the dust collection cup, and the dust suction port is communicated with the first filtering component.

[0019] Further, the first filtering component includes a fluid pipeline, a filtering part and a flow guiding part;

[0020] The fluid pipeline is provided with a fluid inlet and a fluid outlet, and the fluid inlet is communicated with the dust suction port;

[0021] The filtering part surrounds the outside of the fluid pipeline to perform primary filtering on the fluid entering the first filtering component;

[0022] One end of the flow guiding part is connected to the fluid outlet, and the other end of the flow guiding part faces the filtering part to guide the fluid in the fluid pipeline to the filtering part.

[0023] Further, the first filtering component further includes a dust collection ring wall, the dust collection ring wall is located between the fluid pipeline and the side wall of the first filtering component, the bottom end of the dust collection ring wall is connected to the bottom plate of the first filtering component, and there is a gap between the dust collection ring wall and the fluid pipeline and the side wall of the first filtering component;

[0024] A central dust collection space is surrounded between the dust collection ring wall, the fluid pipeline and the bottom plate of the first filtering component to store the dust secondarily filtered by the second filtering component;

[0025] A circulation space is surrounded between the dust collection ring wall, the bottom plate of the first filtering component and the first filtering component for the fluid after primary filtering to circulate.

[0026] Further, a partition is provided at the top end of the side wall of the first filtering component, the partition surrounds the outside of the side wall of the first filtering component, and the partition is located above the flow guiding part;

[0027] The partition is in sealing contact with the side wall of the dust collection cup.

[0028] Further, the second filtering component further includes a dust guiding member and a cover body;

[0029] The dust guiding member is communicated with the central dust collecting space and the cyclone cone to guide the dust filtered by the cyclone cone into the central dust collecting space;

[0030] The cover body is arranged on the motor assembly cavity and the cyclone cone, and is arranged on the top of the dust collecting cup.

[0031] Further, the cover body is provided with a wind guiding area, an air inlet area and an air outlet area;

[0032] The air outlet area is arranged around the outside of the air inlet area, the wind guiding area is arranged around the outside of the air outlet area, and the wind guiding area corresponds to the cyclone cone, and the air inlet area and the air outlet area correspond to the motor assembly cavity.

[0033] Further, the wind guiding area is provided with air guiding openings, the air guiding openings correspond to the cyclone cone one by one, and the air guiding openings are communicated with the cyclone cone;

[0034] The air inlet area is provided with an air inlet communicated with the motor assembly cavity;

[0035] The air outlet area is provided with an air outlet communicated with the motor assembly cavity.

[0036] Further, the motor assembly includes a motor ring wall and a motor;

[0037] The motor ring wall is located in the motor assembly cavity, one end of the motor ring wall abuts against the bottom of the motor assembly cavity, the other end of the motor ring wall abuts against the cover body, and there is a gap between the motor ring wall and the side wall of the motor assembly cavity;

[0038] The motor is installed in the motor ring wall.

[0039] Further, the motor ring wall divides the motor assembly cavity into two cavities, namely a first cavity and a second cavity, and the second cavity is arranged around the outside of the first cavity;

[0040] The motor is installed in the first cavity;

[0041] The first cavity corresponds to the air inlet area, and the air inlet is communicated with the first cavity;

[0042] The second cavity corresponds to the air outlet area, and the air outlet is communicated with the second cavity;

[0043] The motor includes an air inlet end and an air outlet end, and the air inlet end is communicated with the air inlet;

[0044] A communication opening capable of communicating the first cavity and the second cavity is formed on the motor ring wall, at least a part of the communication opening is opposite to the air outlet end, and the communication opening is far away from the air outlet.

[0045] Further, the motor flow guide is connected to the cover body;

[0046] The motor flow guide includes an air intake passage and an air exhaust passage. The air intake passage is communicated with the air inlet, and the air exhaust passage is communicated with the air outlet.

[0047] Further, the air intake passage is provided with a first inlet and a first outlet, and the first outlet is communicated with the air inlet;

[0048] The air exhaust passage is provided with a second inlet and a second outlet, and the second inlet is communicated with the air outlet.

[0049] Further, the motor flow guide includes a first end and a second end. The first end is connected to the cover body, and the second end is connected to the rear end cover;

[0050] The first inlet is arranged on the side wall of the motor flow guide, and the first outlet is arranged at the first end;

[0051] The second inlet is arranged at the first end, and the second outlet is arranged at the second end.

[0052] Further, cover plates and lapping parts are respectively arranged at both ends of the motor flow guide;

[0053] The cover plate is located at the second end and is provided with the second outlet. The cover plate is hermetically covered on the air intake passage and the top of the first inlet;

[0054] The lapping part is located at the first end and is provided with the first outlet and the second inlet. The lapping part is connected to the cover body. The first outlet is communicated with the air inlet, and the second inlet is hermetically communicated with the air outlet.

[0055] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0056] (1) The motor assembly is installed inside the filtering device, which can effectively reduce the overall length of the dust suction device. The cyclone cone is arranged outside the motor assembly, which can effectively reduce the noise and vibration during the operation of the motor assembly and improve the user experience of the dust suction device;

[0057] (2) The filtering device includes a first filtering component, a second filtering component and a third filtering component. While the dust suction device realizes multi-stage filtering, the motor assembly and the motor flow guide are wrapped inside the filtering device, which can effectively reduce the length of the dust suction device and can also achieve good vibration reduction and noise reduction effects;

[0058] (3) The first filter component is provided with a diversion part which spirally extends from the fluid outlet to the filter part to cyclone-guide the fluid in the fluid pipeline to the filter part. On the one hand, the diversion part guides the fluid entering the first filter component, enabling the fluid to be quickly directed to the filter part; on the other hand, the diversion part causes the fluid to form a cyclone outside the first filter component, separating the relatively large-particle dust in the fluid under the action of centrifugal force, reducing the filtration pressure on the filter part, and enabling the filter part to achieve a better filtration effect.

[0059] (4) The middle cover part surrounds the outside of the third filter component and gradually inclines inwards from front to back, enabling the fluid after secondary filtration to be quickly directed to the third filter component while reducing the volume at the rear end of the dust collection device and improving the user experience of the dust collection device.

[0060] In the present invention, the above technical solutions can also be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can be made obvious from the description or understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained from the content specifically pointed out in the description and the drawings. Description of the Drawings

[0061] The drawings are only for the purpose of showing specific embodiments and are not considered to be a limitation of the present invention. Throughout the drawings, the same reference signs represent the same components.

[0062] Figure 1 It is a schematic structural diagram of the dust collection device in the specific embodiment;

[0063] Figure 2 It is a sectional view of the dust collection device in the specific embodiment;

[0064] Figure 3 It is a sectional view of the dust collection device from another angle in the specific embodiment;

[0065] Figure 4 It is a schematic assembly structural diagram of the dust collection cup, the first filter component and the second filter component in the specific embodiment;

[0066] Figure 5 It is a sectional assembly view of the dust collection cup, the first filter component and the second filter component in the specific embodiment;

[0067] Figure 6 It is a schematic structural diagram of the first filter component in the specific embodiment;

[0068] Figure 7 It is a schematic structural diagram of the first filter component from another angle in the specific embodiment;

[0069] Figure 8Schematic diagram (I) of the structure of the second filtration component in the specific implementation manner;

[0070] Figure 9 Schematic diagram (II) of the structure of the second filtration component in the specific implementation manner;

[0071] Figure 10 Schematic diagram (III) of the structure of the second filtration component in the specific implementation manner;

[0072] Figure 11 Schematic diagram of the structure of the second filtration component after removing the cover body in the specific implementation manner;

[0073] Figure 12 Schematic diagram of the structure of the second filtration component after removing the cover body and assembling the motor ring wall in the specific implementation manner;

[0074] Figure 13 Cross-sectional view of the assembly of the second filtration component and the motor component in the specific implementation manner;

[0075] Figure 14 Schematic diagram of the assembly of the second filtration component and the motor flow guide in the specific implementation manner;

[0076] Figure 15 Schematic diagram of the structure of the motor flow guide in the specific implementation manner;

[0077] Figure 16 Schematic diagram of the structure of the motor flow guide from another angle in the specific implementation manner;

[0078] Figure 17 Cross-sectional view of the motor flow guide in the specific implementation manner.

[0079] Reference numerals:

[0080] 1 - First filtration component; 101 - Fluid inlet; 102 - Fluid outlet; 11 - Fluid pipeline; 111 - Direct current pipe; 112 - Cyclone pipe; 12 - Filtration part; 13 - Flow guide part; 131 - Horizontal plate; 132 - Spiral plate; 133 - Baffle plate; 14 - Bottom plate; 15 - Dust collection ring wall; 16 - Partition board;

[0081] 2 - Second filtration component; 201 - Air guide port; 202 - Dust collecting port; 203 - Air inlet; 204 - Air outlet; 205 - Dust guide port; 206 - Air guide opening; 207 - Air inlet opening; 208 - Air outlet opening; 21 - Motor assembly cavity; 22 - Cyclone cone; 221 - Cyclone part; 222 - Cone part; 23 - Dust guide part; 231 - Conical ring wall; 232 - Bottom cover; 232a - Cover plate part; 24 - Connecting plate; 25 - Cover body; 251 - Air guide area; 252 - Air inlet area; 253 - Air outlet area; 254 - Air guide pipe; 255 - Assembly strip; 26 - Guide part;

[0082] 3 - Third filtration component;

[0083] 4 - Motor assembly; 401 - Connecting port; 41 - Motor ring wall; 411 - Support bar; 42 - Motor; 421 - Air inlet end; 422 - Air outlet end;

[0084] 5 - Motor flow guide; 501 - First inlet; 502 - First outlet; 503 - Second inlet; 504 - Second outlet; 51 - Intake channel; 52 - Exhaust channel; 53 - Cover plate; 531 - Central plate; 532 - Extension plate; 54 - Lapping part; 541 - Assembly groove; 542 - Annular protrusion; 55 - Ring wall part; 56 - Rib part;

[0085] 6 - Housing; 601 - Dust suction port; 61 - Dust collection cup; 62 - Middle cover part; 63 - Rear end cover. Detailed implementation manners

[0086] The following combines with the attached drawings to specifically describe the preferred embodiments of the present invention. Among them, the attached drawings constitute a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0087] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the term "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the present invention can be understood according to specific circumstances.

[0088] The terms "top", "bottom", "above...", "under" and "on..." described throughout the text are relative positions with respect to the components of the device, such as the relative positions of the top and bottom substrates inside the device. It can be understood that the device is multifunctional and is independent of its orientation in space.

[0089] The normal working surface of the present invention can be a plane or a curved surface, which can be inclined or horizontal. For the convenience of description, the embodiments of the present invention are placed on a horizontal plane and used on the horizontal plane, and "high and low" and "up and down" are defined accordingly.

[0090] A specific embodiment of the present invention discloses a dust suction device, as Figures 1 to 17 shown including:

[0091] Filtration device, including a motor assembly cavity 21 and a plurality of cyclone cones 22, and the cyclone cones 22 are arranged around the outside of the motor assembly cavity;

[0092] Motor assembly 4, installed in the above-mentioned motor assembly cavity 21;

[0093] The motor flow guide member 5 is communicated with the motor assembly cavity 21 to introduce the fluid filtered by the filtering device into the motor assembly 4 and export the fluid discharged from the motor assembly 4 from the motor assembly cavity 21.

[0094] Compared with the prior art, in the dust suction device of the present invention, the motor assembly 4 is installed inside the filtering device, which can effectively reduce the overall length of the dust suction device, and the cyclone cone 22 is arranged around the outside of the motor assembly 4, which can effectively reduce the noise and vibration during the operation of the motor assembly 4 and improve the use experience of the dust suction device.

[0095] The above filtering device includes a first filtering component 1, a second filtering component 2 and a third filtering component 3 arranged from front to back, that is, the second filtering component 2 is located downstream of the first filtering component 1, the second filtering component 2 is located downstream of the third filtering component 3, and the second filtering component 2 is provided with the above-mentioned motor assembly cavity 21 and the cyclone cone 22. The motor flow guide member 5 is located downstream of the second filtering component 2, and the third filtering component 3 is arranged around the outside of the motor flow guide member 5.

[0096] After the dust-containing fluid enters the dust suction device, it is first filtered at the first level by the first filtering component 1, then filtered at the second level by the second filtering component 2, and then filtered at the third level by the third filtering component 3. The fluid after the third-level filtering is guided by the motor flow guide member 5 to the motor assembly 4 in the motor assembly cavity 21. The fluid discharged from the motor assembly 4 is then guided by the motor flow guide member 5 to the rear end of the dust suction device, and finally discharged from the dust suction device through the exhaust hole opened at the rear end of the dust suction device.

[0097] While realizing multi-stage filtering (a total of three stages of filtering) in the dust suction device of the present invention, the motor assembly 4 and the motor flow guide member 5 are covered inside the filtering device, which can effectively reduce the length of the dust suction device and can also achieve good vibration reduction and noise reduction effects.

[0098] The above dust suction device further includes a housing 6, and an assembly cavity is provided inside the housing 6 for assembling other components such as the filtering device and the motor assembly.

[0099] Specifically, the housing 6 includes a dust collection cup 61, a middle cover portion 62 and a rear end cover 63. The dust collection cup 61, the middle cover portion 62 and the rear end cover 63 are butt-jointed in sequence from front to back to jointly form the assembly cavity. The first filtering component 1 and the second filtering component 2 are installed in the dust collection cup 61. The middle cover portion 62 is arranged around the outside of the third filtering component 3. The third filtering component 3 is arranged around the side wall outside of the motor flow guide member 5. The rear end cover 63 is connected to the rear end of the motor flow guide member 5. All the fluid filtered at the third level by the third filtering component 3 is guided to the motor flow guide member 5, and all the fluid exported by the motor flow guide member 5 flows to the rear end cover 63.

[0100] A dust collection port 601 is provided on the dust collection cup 61, and the dust-containing fluid enters the dust collection cup 61 (dust collection device) through the dust collection port 601. The dust collection port 601 is connected to the first filter assembly 1 to allow the dust-containing fluid to enter the first filter assembly 1 for primary filtration.

[0101] An exhaust hole is provided on the rear end cover 63 to allow the fluid after filtration and dust removal in the dust collection device to be discharged. Specifically, the fluid discharged from the motor assembly 4 is guided by the motor guide member 5 and discharged from the exhaust hole at the rear end cover 63 outside the dust collection device.

[0102] The first filter assembly 1 includes a fluid pipeline 11, a filtering portion 12, and a guiding portion 13. The fluid pipeline 11 is provided with a fluid inlet 101 and a fluid outlet 102. The fluid inlet 101 is hermetically connected to the dust collection port 601 to allow all the dust-containing fluid entering the dust collection cup 61 to enter the fluid pipeline 11 (the first filter assembly 1); the filtering portion 12 is disposed around the outside of the fluid pipeline 11 to perform primary filtration on the fluid entering the first filter assembly 1; one end of the guiding portion 13 is connected to the fluid outlet 102, and the other end faces the filtering portion 12 to guide the fluid in the fluid pipeline 11 to the filtering portion 12.

[0103] By providing the guiding portion 13 in the above-mentioned first filter assembly 1, the dust-containing fluid can be quickly guided to the filtering portion 12, preventing the dust-containing fluid from forming a turbulent flow in the dust collection cup 61 and affecting the filtering effect and filtering speed of the filtering portion 12.

[0104] At least a part of the fluid pipeline 11 is enclosed inside the side wall of the first filter assembly 1. The filtering portion 12 forms a part of the side wall of the first filter assembly, and a gap is reserved between the side wall of the fluid pipeline 11 and the side wall of the first filter assembly 1 to allow the fluid after primary filtration by the filtering portion 12 to flow in the gap.

[0105] The fluid outlet 102 is provided on the side wall of the first filter assembly 1, and the guiding portion 13 is located on the outer side surface of the side wall of the first filter assembly (the side surface away from the central axis of the first filter assembly).

[0106] Specifically, the guiding portion 13 spirally extends from the fluid outlet 102 to the filtering portion 12 to cyclone-guide the fluid in the fluid pipeline 11 to the filtering portion 12. On the one hand, the guiding portion 13 guides the fluid entering the first filter assembly 1 to quickly guide the fluid to the filtering portion 12; on the other hand, the guiding portion 13 causes the fluid to form a cyclone outside the first filter assembly 1, separating the dust with larger particles in the fluid under the centrifugal force, reducing the filtering pressure on the filtering portion 12, and enabling the filtering portion 12 to achieve a better filtering effect.

[0107] To ensure the filtering effect of the filtering part 12, the fluid outlet 102 and the guiding part 13 are located above the filtering part 12, so that as much as possible of the whole filtering part 12 can filter the fluid, giving full play to the filtering effect of the filtering part 12.

[0108] Furthermore, the guiding part 13 includes a horizontal plate 131 and a spiral plate 132. The horizontal plate 131 is located above the fluid outlet 102. The spiral plate 132 is connected to the horizontal plate 131, and the spiral direction of the spiral plate 132 faces the filtering part 12, so as to spirally guide the fluid to the filtering part 12 for primary filtration and dust removal.

[0109] In this embodiment, the spiral plate 132 includes a connecting end and an extending end. The connecting end is connected to the horizontal plate 131, and the connecting end spirally extends downward to the extending end. The extending end is located below the fluid outlet 102 and above the filtering part 12.

[0110] It should be noted that the horizontal plate 131 and the spiral plate 132 are perpendicularly connected to the side wall of the first filtering component 1, so as to guide the fluid to the filtering part 12 faster and better.

[0111] In order to better make the fluid flowing out of the fluid outlet 102 flow along the guiding part 13 to the filtering part 12, the guiding part 13 further includes a baffle 133, which is located at one end where the fluid outlet 102 is connected to the extending end of the spiral plate 132. The baffle 133 is simultaneously connected to the horizontal plate 131, the spiral plate 132 and the side wall of the first filtering component 1. Specifically, the upper end of the baffle 133 is perpendicularly connected to the lower end face of the horizontal plate 131, the lower end of the baffle 133 is perpendicularly connected to the upper end face of the spiral plate 132, and the inner end face of the baffle 133 is perpendicularly connected to one end of the fluid outlet 102 close to the extending end of the spiral plate 132, so that the fluid can only be guided to the filtering part 12 along the horizontal plate 131 and the spiral plate 132 after being led out from the fluid outlet 102, accelerating the speed of guiding the fluid to the filtering part 12, thereby increasing the filtering speed of the filtering part 12, and at the same time preventing the fluid from being reversely guided from the other end, resulting in fluid turbulence and affecting the filtering effect and filtering speed of the first filtering component 1.

[0112] To guide the fluid to the filtering part 12 as soon as possible, the spiral angle α of the guiding part 13 < 360°. At the same time, in order to ensure that the fluid can form a cyclone in the guiding part 13, 180° ≤ α. Therefore, 180° ≤ α < 360°. In this embodiment, α refers to the spiral angle between the connecting end and the extending end of the spiral plate 132.

[0113] To ensure that the fluid is better guided and forms a cyclone at the guiding part 13, the fluid pipeline 11 includes a straight pipe 111 and a swirl pipe 112. One end of the straight pipe 111 is provided with a fluid inlet 101, and the other end of the straight pipe 111 is hermetically and penetratively connected to the swirl pipe 112, so that all the fluid entering the straight pipe 111 is introduced into the swirl pipe 112.

[0114] The cyclone tube 112 includes a central portion and an arc portion. The bottom of the central portion is in through connection with the direct current tube 111. An opening is provided on the side wall of the central portion. One end of the arc portion is communicated with the central portion through the opening. The other end of the arc portion is provided with a fluid outlet 102. That is, one end of the arc portion is connected to the central portion, and the other end is connected to the side wall of the first filtering component 1, and an opening is provided at the connection with the central portion, and a fluid outlet 102 is provided at the connection with the first filtering component 1. In this embodiment, the opening on the side wall of the central portion extends from the top end to the bottom end of its side wall.

[0115] An arc-shaped channel is provided in the arc portion to enable the fluid to form a cyclone through its diversion, so that the fluid can be better guided along the diversion portion 13 after being led out to the fluid outlet 102. It should be noted that the arc of the arc portion faces the diversion portion 13, that is, the arc direction of the arc-shaped channel in the arc portion is the same as the spiral direction of the spiral plate 132, so as to prepare for the fluid to be guided to the filtering portion 12 by the diversion portion 13 faster, and at the same time make the fluid easier to form a cyclone.

[0116] The first filtering component 1 further includes a bottom plate 14, which is covered on the bottom end of the side wall of the first filtering component 1, and a through hole for the fluid pipeline 11 to pass through is provided at the center of the bottom plate 14. Specifically, the bottom plate 14 is detachably and sealingly connected to the side wall of the first filtering component 1, and the bottom plate 14 is sealingly connected to the side wall of the fluid conduit 11.

[0117] In this embodiment, the direct current tube 111 passes through the through hole of the bottom plate 14 and is connected to the cyclone tube 112. The side wall of the direct current tube 111 is sealingly connected to the bottom plate 14, and a part of the direct current tube 111 is located above the bottom plate 14, and a part is located above the bottom plate 14. The fluid inlet 101 is located below the bottom plate 14.

[0118] In this embodiment, the bottom end of the filtering portion 12 is detachably and sealingly connected to the bottom plate 14. The filtering portion 12 constitutes the lower side wall of the first filtering component 1. The fluid filtered by the filtering portion 12 enters the gap between the side wall of the first filtering component 1 and the fluid pipeline 11.

[0119] The above-mentioned first filtering component 1 further includes a dust collecting ring wall 15. The dust collecting ring wall 15 is located between the fluid pipeline 11 and the side wall of the first filtering component 1. That is, the dust collecting ring wall 15 surrounds the outside of the direct current tube 111 and the central portion 112. The side wall of the first filtering component 1 surrounds the outside of the dust collecting ring wall 15, and gaps are reserved between the dust collecting ring wall 15 and the fluid pipeline 11 and the side wall of the first filtering component 1.

[0120] The bottom end of the dust collecting ring wall 15 is detachably and sealingly connected to the bottom plate 14, and the top end of the dust collecting ring wall 15 is flush with the top end face of the side wall of the first filtering component 1.

[0121] It should be noted that the dust collection ring wall 15 is provided with a notch for the arc-shaped portion of the cyclone pipe 112 to pass through, and the integrated ring wall 15 is hermetically connected to the side wall and the bottom wall of the arc-shaped portion.

[0122] A central dust collection space is formed by enclosing between the bottom plate 14, the dust collection ring wall 15 and the side wall of the fluid pipe 11. The dust filtered out by the second filter assembly 2 is collected in this central dust collection space. The bottom of the second filter assembly 2 is docked with the top end of the dust collection ring wall 15 to introduce the dust filtered out by the second filter assembly 2 into the central dust collection space.

[0123] A space for the fluid to flow after being filtered by the filtering portion 12 (this space is called the flow-through space) is formed by enclosing between the bottom plate 14, the dust collection ring wall 15 and the side wall of the first filter assembly 1. That is, the fluid after being filtered by the filtering portion 12 at the first stage enters the flow-through space and is then led out from the top of the first filter assembly 1.

[0124] In order to enable the dust filtered out at the first stage to have an independent dust storage space in the dust collection cup 61, a partition plate 16 is provided at the top end of the side wall of the first filter assembly 1. The partition plate 16 surrounds the outside of the side wall of the first filter assembly 1 and is located above the diversion portion 13. The fluid inlet 101 of the fluid pipe 11 is hermetically communicated with the dust suction port 401. The partition plate 16 is in hermetical contact with the side wall of the dust collection cup 61. An independent dust storage space is formed among the bottom of the dust collection cup 61, the side wall of the dust collection cup, the side wall of the first filter assembly 1, the side wall of the fluid pipe and the partition plate 16. The dust filtered out by the filtering portion 12 is located in this dust storage space.

[0125] As can be seen from the above, the dust filtered out at the first stage by the first filter assembly 1 is stored in the above-mentioned dust storage space, while the dust filtered out at the second stage by the second filter assembly 2 is stored in the above-mentioned central dust collection space. The two spaces are separated by the dust collection ring wall 15 and the bottom plate 14 and are independent of each other, so that dust of different levels is stored in different zones, which is convenient for the user to clean.

[0126] In this embodiment, the shape of the partition plate 16 is trumpet-shaped, extending obliquely outward and upward from the bottom end of the partition plate 16 to the top end, that is, the opening of the partition plate 16 faces the second filter assembly 2, so as to play a role in guiding the fluid after the first-stage filtration and making the fluid be guided to the second filter assembly 2 as soon as possible.

[0127] In this embodiment, the filtering portion 12 is a filter mesh cover. The top of the filter mesh cover is hermetically connected to the bottom of the upper side wall portion, and the bottom of the filter mesh cover is detachably and hermetically connected to the bottom plate. The bottom end of the dust collection ring wall 15 is detachably and hermetically connected to the bottom plate 14, ensuring that the dust in the central dust collection space will not leak from the bottom plate 14, and at the same time facilitating the cleaning of the dust in the central dust collection space.

[0128] The above-mentioned second filter assembly 2 further includes a dust guiding member 23 for guiding the dust filtered out at the second stage by the cyclone cone 22 into the central dust collection space surrounded by the dust collection ring wall 15.

[0129] The dust guiding member 23 is located below the motor assembly cavity 21 and the cyclone cone 22. The bottom of the dust guiding member 23 is butted against the top of the side wall of the first filtering assembly 1. An air guiding port 201 and a dust collecting port 202 are formed in the bottom of the dust guiding member 23. The fluid after the primary filtration by the first filtering assembly 1 is led out from the air guiding port 201, and the dust after the secondary filtration by the cyclone cone 22 is introduced into the central dust collecting space through the dust collecting port 202.

[0130] Specifically, the dust guiding member 23 includes a conical ring wall 231 and a bottom cover 232. The bottom cover 232 is connected to the bottom of the conical ring wall 231. The air guiding port 201 and the dust collecting port 202 are formed in the bottom cover 232.

[0131] The bottom cover 232 further includes a cover plate portion 232a which can cover the top end of the fluid pipeline 11 so that all the fluid entering the fluid pipeline 1 is led out from the fluid outlet 102 on the side wall of the first filtering assembly 1. The shape of the cover plate portion 232a is adapted to the top of the fluid pipeline 11 to ensure the closure of the top end of the fluid pipeline 11. In this embodiment, the cover plate portion 232a covers the top of the cyclone pipe 112, and the shape of the cover plate portion 232a is adapted to the shape of the top of the cyclone pipe 112.

[0132] One part of the bottom end of the conical ring wall 231 is connected to the upper end surface of the cover plate portion 232a, and the other part and the cover plate portion 232 enclose the dust collecting port 202. The dust collecting port 202 is communicated with the central dust collecting space. At the same time, the shape of the bottom end of the conical ring wall 231 is adapted to the shape of the top of the dust collecting ring wall 15, and except for the part connected to the cover plate portion 232a, the rest of the bottom end of the conical ring wall 231 is butted against the dust collecting ring wall 15 to ensure that all the dust after the secondary filtration guided by the conical ring wall 231 is stored in the central dust collecting space.

[0133] The air guiding port 201 is located outside the conical ring wall 231 and is communicated with the above-mentioned circulation space (i.e., the space enclosed by the dust collecting ring wall 15, the side wall of the first filtering assembly 1, and the bottom plate 14). All the fluid after the primary filtration is led out from the air guiding port 201.

[0134] In this embodiment, the shape of the bottom end of the side wall of the bottom cover 232 is adapted to the shape of the top end of the side wall of the first filtering assembly 1, and the bottom end of the side wall of the bottom cover 232 is butted against the top end of the side wall of the first filtering assembly 1.

[0135] The outer side wall of the cover plate portion 232 constitutes a part of the side wall of the bottom cover 232. The side wall of the bottom cover 232 except the cover plate portion 232 and the conical ring wall 231 enclose the above-mentioned air guiding port 201.

[0136] The conical ring wall 231 extends upward and outward from the bottom end to the top end, that is, it inclines downward and inward from the top end to the bottom end, so that the dust filtered out in the secondary filtration can fall into the central dust collection space more quickly under the guidance of the conical ring wall 231.

[0137] In this embodiment, the shape of the conical ring wall 231 is trumpet-shaped, and the opening of the conical ring wall 231 faces the direction where the motor assembly cavity 21 and the cyclone cone 22 are located.

[0138] The outer edge of the top end of the conical ring wall 231 surrounds the outside of the bottom of the cyclone cone 22 and the motor assembly cavity 21. The conical ring wall 231, the bottoms of all the cyclone cones 22, and the bottom of the motor assembly cavity 21 enclose a dust guiding space for guiding the dust after secondary filtration. Specifically, the top end of the conical ring wall 231 is connected to the bottom end of the cyclone cone 22.

[0139] The above-mentioned cyclone cone 22 is provided with an air inlet 203, an air outlet 204, and a dust guiding port 205. The fluid after primary filtration is led out from the air guiding port 201 and enters the cyclone cone 22 through the air inlet 203. After the cyclone filtration (i.e., secondary filtration) of the cyclone cone 22, the fluid after secondary filtration is led out of the cyclone cone 22 through the air outlet 204, and the dust filtered out in the secondary filtration is led into the central dust collection space through the dust guiding port 205 and the dust guiding member 23.

[0140] The cyclone cone 22 includes a cyclone part 221 and a cone part 222. A cyclone cavity is provided in the cyclone part 221, and a conical cavity is provided in the cone part 222. The cyclone cavity is communicated with the conical cavity. The conical cavity is inverted (inverted means that the vertex of the cone is located directly below the bottom surface of the cone, and the vertex and the bottom surface refer to the vertex and the bottom surface in the geometric sense of the cone) and is located below the cyclone cavity. The cyclone cavity causes the fluid entering it to form a cyclone, and the conical cavity is used to lead out the filtered dust from the cyclone cone 22 more quickly. Specifically, the side wall of the cyclone cavity is an arc-shaped side wall that can cause the fluid to form a cyclone.

[0141] The air inlet 203 and the air outlet 204 are opened on the cyclone part 221, and both are communicated with the cyclone cavity.

[0142] The dust guiding port 205 is opened at the bottom end of the cone part 222, and the dust guiding port 205 is communicated with the conical cavity, that is, the dust guiding port 205 is located at the vertex of the conical cavity.

[0143] It should be noted that the dust guiding port 205 is located at the lowest point of the cyclone cone 22, and the top of the conical ring wall 231 surrounds the outside of all the dust guiding ports 205 to ensure that all the dust filtered out in the secondary filtration can be led out of the cyclone cone 22 through the dust guiding port 205 and then deposited in the central dust collection space under the guidance of the dust guiding member 23.

[0144] The dusty fluid enters the cyclone part 221 through the air inlet 203 and forms a cyclone within the cyclone chamber. The dust in the fluid after the primary filtration falls into the conical chamber along the chamber wall of the cyclone under the centrifugal force of the cyclone and the gravitational force of the dust. The dust after the secondary filtration is led out of the cyclone cone 22 through the dust guide port 205 under the guidance of the conical chamber wall, and the fluid after the secondary filtration is led out of the cyclone cone 22 through the air outlet 204.

[0145] To ensure that the fluid does not interfere with each other when entering and leaving the cyclone cone 22, and also to enable the fluid to better form a cyclone within the cyclone cone 22, the air inlet 203 is opened on the side wall of the cyclone part 221, and the air outlet 204 is opened at the top of the cyclone part 221.

[0146] The cyclone part 221 is tangent to the outer side surface of the side wall of the motor assembly chamber 21 to prevent the cyclone part 221 from occupying the assembly space of the motor and affecting the assembly of the motor.

[0147] Each cyclone cone 22 has the same shape, and the air inlet 203 thereon is opened at the same position, so that the cyclone direction and cyclone speed within the cyclone cone 22 are consistent, avoiding the vibration of the second filtration component and inconsistent filtration effects caused by different wind directions and wind speeds in each cyclone cone 22.

[0148] Since the air inlet 203 is opened on the side wall of the cyclone cone 22, a certain distance is maintained between adjacent cyclone cones 22, that is, the cyclone cones 22 are arranged alternately, that is, the cyclone cones 22 do not touch each other, to ensure smooth intake of the air inlet 203.

[0149] A connecting plate 24 is provided between two adjacent cyclone cones 22. The connecting plate 24 extends from the top end of the side wall of the cyclone cone 22 to the bottom end of the side wall of the cyclone cone 2, and all the air inlets 203 are located outside the connecting plate 24 to prevent the setting of the connecting plate 24 from affecting the intake of the air inlet 203. In this embodiment, the top end face of the connecting plate 24 is flush with the top end face of the cyclone cone 22, the bottom end face of the connecting plate 24 is flush with the bottom end face of the cyclone cone 22, the two side end faces of the connecting plate 24 are respectively connected to the side walls of adjacent different cyclone cones 22, and the outer wall surface of the connecting plate 24 is flush with the inner end face of the air inlet 203.

[0150] It should be noted that the top of the conical ring wall 231 is hermetically butted with the connecting plate 24 and the bottom of the cyclone cone 22, and the conical ring wall 231 surrounds the outside of the dust guide port 205 to prevent the dust after the secondary filtration from leaking out and storing all the dust in the central dust collection space.

[0151] In this way, the connecting plate 24, two adjacent cyclone cones 22 and the outer side wall surface of the motor assembly cavity 21 enclose a cavity, which is called the partition cavity. The outer side of the motor assembly cavity 21 is completely wrapped by the partition cavity, the cyclone cone 22 and the conical ring wall 231. The cyclone cone 22 is provided with a cyclone cavity and a conical cavity. Therefore, the motor assembly cavity 21 is centered and surrounded by the partition cavity, the cyclone cavity, the conical cavity and the dust guiding space, which can effectively reduce the vibration and noise generated when the motor works in the motor assembly cavity 21, and produce a good vibration reduction and noise reduction effect.

[0152] In order to further improve the noise reduction effect of the partition cavity, sound-absorbing cotton is filled in the partition cavity to further reduce the noise generated when the motor works and improve the noise reduction effect of the filter assembly.

[0153] The second filter assembly further includes a cover body 25, and the cover body 25 is covered on the top of the side wall of the second filter assembly, that is, the cover body 25 is covered on the top of the motor assembly cavity 21, the cyclone cone 22 and the connecting plate 24.

[0154] The cover body 25 is covered on the top end of the dust collection cup 61, and the cover body 25 is in sealed contact with the side wall of the dust collection cup 61.

[0155] Specifically, the cover body 25 is provided with a wind guiding area 251, an air inlet area 252 and an air outlet area 253. The air outlet area 253 is surrounded on the outside of the air inlet area 252, and the wind guiding area 251 is surrounded on the outside of the air outlet area 253. The wind guiding area 251 corresponds to the filtering part, and the air inlet area 252 and the air outlet area 253 correspond to the motor assembly cavity 21. The wind guiding area 251 is used to guide out the fluid after secondary filtration, and the air inlet area 252 and the air outlet area 253 are used to allow the fluid to enter and exit the motor assembly cavity 21, so that the motor assembly cavity 21 realizes fluid interaction with the outside world.

[0156] The wind guiding area 251 is provided with air guiding ports 206 to guide out the fluid after secondary filtration from the cyclone cone 22. In this embodiment, the number of the air guiding ports 206 is the same as the number of the cyclone cones 22, and the air guiding ports 206 correspond to the cyclone cones 22 one by one. The air guiding ports 206 are communicated with the air outlet 204, so that the filtered fluid is guided out of the filter assembly through the air guiding ports 206.

[0157] The air inlet area 252 is provided with an air inlet 207 communicated with the motor assembly cavity 21, and the fluid enters the motor assembly cavity 21 through the air inlet 207.

[0158] The air outlet area 253 is provided with an air outlet 208 communicated with the motor assembly cavity 21, and the fluid in the motor assembly cavity 21 is discharged through the air outlet 208. There are a plurality of air outlets 208, and these air outlets 208 are surrounded on the outside of the air inlet 207.

[0159] In this embodiment, the air inlet area 252 is located at the central position of the cover body 25, and the air inlet 207 is located at the center position of the cover body 25.

[0160] In order to introduce the fluid into the motor assembly cavity 21 more quickly, the air inlet area 252 gradually bulges outwards from the edge towards the center (that is, bulges away from the motor assembly cavity 21), that is, the air inlet area 252 forms a downward slope from the center to the edge. Specifically, the shape of the air inlet area 252 is trumpet-shaped, and the trumpet opening faces the motor assembly cavity 21. In this way, the air inlet 207 is relatively higher (or more outward) than the air outlet 208, so that the fluid can be introduced into the motor assembly cavity 21 from the air inlet 207 more quickly.

[0161] In order to enable the cyclone cone 22 to have a better filtering effect and accelerate the export of the filtered fluid, the cover 25 is provided with a duct 254. One end of the duct 254 is butt-connected and communicated with the air guide port 206, and the other end extends from the air guide port 206 into the cyclone cone 22, and the port located in the cyclone cone 22 is below the air inlet 203 to prevent the fluid after primary filtration from being directly exported from the cyclone cone 22 without cyclone filtration.

[0162] In this embodiment, the air inlet 203 is opened at the top of the side wall of the cyclone part 221, that is, the air inlet 203 is opened downward at the top of the side wall of the cyclone part 221, so that the dust-containing fluid entering the cyclone cavity from the air inlet 203 can better achieve cyclone dust removal.

[0163] In order to better make the fluid form a cyclone in the cyclone part 221, a guiding part 26 is provided at the air inlet 203. Under the guiding action of the guiding part 26, the fluid after primary filtration enters the cyclone part 221 in a manner tangent to the side wall of the cyclone cavity. Specifically, the guiding part 26 is provided with an air inlet channel communicating with the air inlet 203, and the air inlet channel is tangent to the side wall of the cyclone cavity. Through its diversion, the fluid after primary filtration can form a cyclone in the cyclone cavity more quickly and easily, improving the filtering effect of the cyclone cone 22.

[0164] The motor assembly 4 includes a motor ring wall 41 and a motor 42.

[0165] The motor ring wall 41 is located in the motor assembly cavity 21. One end of the motor ring wall 41 abuts against the bottom of the motor assembly cavity 21, and the other end of the motor ring wall 41 abuts against the cover 25. A gap is reserved between the motor ring wall 41 and the side wall of the motor assembly cavity 21.

[0166] The motor ring wall 41 divides the motor assembly cavity 21 into two cavities, namely the first cavity and the second cavity, and the second cavity surrounds the outside of the first cavity. That is, the inner side wall of the motor ring wall 41, the bottom of the motor assembly cavity 21 and the cover 25 limit the first cavity, and the side wall of the motor assembly cavity 21, the bottom of the motor assembly cavity 21, the outer side wall of the motor ring wall 41 and the cover 25 limit the second cavity.

[0167] The motor 42 is installed in the motor ring wall 41, that is, the motor 42 is installed in the first cavity.

[0168] The first cavity corresponds to the air inlet area 252 of the cover body 25, and the air inlet 207 is communicated with the first cavity to prepare for the fluid to enter the motor 42.

[0169] The second cavity corresponds to the air outlet area 253 of the cover body 25, and the air outlet 208 is communicated with the second cavity to prepare for discharging the fluid outside the motor assembly cavity 21.

[0170] The motor 42 includes an air inlet end 421 and an air outlet end 422, and the air inlet end 421 is communicated with the air inlet 207.

[0171] A communication port 401 that can communicate the first cavity and the second cavity is formed on the motor ring wall 41. At least a part of the communication port 401 faces the air outlet end 422, and the communication port 401 is far from the air outlet 208.

[0172] The motor ring wall 41 divides the motor assembly cavity 21 into two internally connected first cavity and second cavity. The motor 42 is arranged in the inner first cavity. At least a part of the communication port 401 is connected to the air outlet end 422 of the motor 42, and the communication port 401 is far from the air outlet 207. In this way, the fluid enters the air inlet end 421 of the motor 42 through the air inlet 207, and then is discharged from the air outlet end 422 through the communication port 301, the second cavity, and the air outlet 208 outside the motor assembly cavity 21, lengthening the flow path of the fluid between the air outlet end 422 and the air outlet 208, and achieving a good noise reduction effect.

[0173] In addition, the second cavity is located outside the first cavity. On the one hand, the heat generated by the operation of the motor 42 can be diffused into the second cavity, and when the fluid passes through the second cavity, the heat inside it is taken out of the motor assembly cavity 21 to achieve a good heat dissipation effect; on the other hand, the vibration generated by the operation of the motor 42 can also be eliminated through the buffering of the outer second cavity, achieving a vibration reduction effect and improving the use experience of the dust collection device.

[0174] The motor 42 is installed in the motor ring wall 41. The air inlet end 421 abuts against the cover body 25, and the air inlet end 421 is hermetically communicated with the air inlet 207 so that all the fluid entering from the air inlet 207 enters the motor 42 through the air inlet end 421; the air outlet end 422 is close to the bottom of the motor assembly cavity 21.

[0175] In order to ensure the stability of the motor 42 in the first cavity, a plurality of support bars 411 are provided on the inner side wall of the motor ring wall 41. The support bars 411 are in contact with the side wall of the motor 42 to form a supporting force between the side wall of the motor 42 and the motor ring wall 41, which can not only improve the connection performance between the motor 42 and the motor ring wall 41, but also prevent the motor 42 from shaking in the first cavity, achieving a vibration reduction effect.

[0176] In this embodiment, the support bar 411 is located above the communication port 401 and is closer to the air inlet 207 than the communication port 401.

[0177] The above dust collection device further includes a motor flow guide 5. The motor flow guide 5 is connected to the cover body 25. The motor flow guide 5 includes an air inlet passage 51 and an air exhaust passage 52. The air inlet passage 51 is communicated with the air inlet 207 to guide the fluid to the motor assembly; the air exhaust passage 52 is communicated with the air outlet 208 to guide the fluid discharged by the motor assembly away.

[0178] Among them, the air inlet passage 51 is provided with a first inlet 501 and a first outlet 502, and the first outlet 502 is communicated with the air inlet 207; the air exhaust passage 52 is provided with a second inlet 503 and a second outlet 504, and the second inlet 503 is communicated with the air outlet 208.

[0179] The motor flow guide of the present invention is provided with both an air inlet passage 51 and an air exhaust passage 52, and there is no need to separately provide an air inlet pipe and an air outlet pipe outside the motor assembly, which can effectively reduce the volume and length of the dust collection device, make the layout of the dust collection device more compact, and provide a better user experience.

[0180] The fluids in the air inlet passage 51 and the air exhaust passage 52 do not interfere with each other, that is, the air inlet passage 51 and the air exhaust passage 52 are independent of each other to ensure smooth intake and exhaust of the motor assembly without causing chaos.

[0181] The motor flow guide includes a first end and a second end. The first end is connected to the cover body 25, and the second end is connected to the rear end cover 63.

[0182] The first inlet 501 is arranged on the side wall of the motor flow guide, and the first outlet 502 is arranged at the first end of the motor flow guide. The second inlet 503 and the second outlet 504 are respectively arranged at both ends of the motor flow guide, and the second inlet 503 and the first outlet 502 are located at the same end of the motor flow guide, that is, the second inlet 503 is located at the first end of the motor flow guide, and the second outlet 504 is located at the second end of the motor flow guide.

[0183] There are multiple air exhaust passages 52, and they are evenly arranged around the outside of the air inlet passage 51. A first inlet 501 is formed between the side walls of two adjacent air exhaust passages 52. That is, at this time, the number of the first inlets 501 is equal to the number of the air exhaust passages 52.

[0184] In order to reduce the volume of the motor flow guide, the outer side wall (the side wall far from the central axis of the motor flow guide) of the air exhaust passage 52 forms a part of the side wall of the motor flow guide, and the inner side wall (the side wall close to the central axis of the motor) of the air exhaust passage 52 forms the side wall of the air inlet passage 51, that is, the side wall of the air inlet passage 51 is surrounded by the air exhaust passage 52.

[0185] In this embodiment, the cross-section of the exhaust passage 52 is fan-shaped. That is, the exhaust passage 52 includes an outer arc wall, an inner arc wall, and a left side wall and a right side wall connecting the inner and outer arc walls. That is, the left side wall, the outer arc wall, the inner arc wall, and the right side wall jointly enclose the fan-shaped exhaust passage 52. The outer arc walls of all the exhaust passages 52 form a part of the side wall of the motor flow guide member, and the inner arc walls of all the exhaust passages 52 form the side wall of the intake passage 51.

[0186] In this embodiment, the central axis of the intake passage 51 coincides with the central axis of the motor flow guide member. The first inlet 501 extends radially outward from the side wall of the intake passage 51 along the central axis of the intake passage 51, so that the intake passage 51 communicates with the space outside the side wall of the motor flow guide member. The first inlet 501 extends from one end to the other end of the side wall of the exhaust passage 52, that is, the length of the first inlet 501 is not less than the length of the side wall of the exhaust passage 52. The center of the fan-shaped cross-section of the exhaust passage 52 is located on the central axis of the motor flow guide member.

[0187] Cover plates 53 and overlapping portions 54 are respectively provided at both ends of the motor flow guide member. The cover plate 53 is provided with a second outlet 504, and the overlapping portion 54 is provided with a first outlet 502 and a second inlet 503. That is, the cover plate 53 is located at the second end of the motor flow guide member, and the overlapping portion 54 is located at the first end of the motor flow guide member. The motor flow guide member is connected to the motor assembly through the overlapping portion 54.

[0188] The cover plate 53 is hermetically covered on the intake passage 51 and the first inlet 501, and is far from the first outlet 502, so that the fluid entering the intake passage 51 from the first inlet 501 can only be guided to the air inlet of the motor assembly by the first outlet 502.

[0189] Specifically, the cover plate 53 includes a central plate 531 and an extension plate 532. The extension plate 532 is located outside the central plate 531. The central plate 531 corresponds to the intake passage 51, and the extension plate 532 corresponds to the first inlet 501. That is, the central plate 531 is hermetically covered at one end of the intake passage 51 far from the first outlet 502, and the extension plate 532 is hermetically covered at one end of the first inlet 501 far from the first outlet 502.

[0190] The cover plate 53 and the side wall of the motor flow guide member jointly define the second outlet 504, and the cover plate 53 is hermetically connected to the outer wall surface of the side wall of the exhaust passage 52 to ensure that the fluid entering the intake passage 51 does not leak from the cover plate 53, and at the same time ensure that the fluid in the exhaust passage 52 is discharged from the second outlet 504 and does not penetrate into the intake passage 51.

[0191] A ring wall portion 55 is provided on the side of the cover plate 53 away from the intake passage 1. The ring wall portion 55 surrounds the outside of the cover plate 53 and the second outlet 504, forming a part of the side wall of the motor flow guide member, so as to facilitate the connection of the motor flow guide member with other components (such as the rear end of the dust collection device).

[0192] The rear end of the annular wall portion 55 is detachably and sealingly connected to the rear end cover 63, and the second outlet 504 communicates with the rear end cover 63, so that all the fluid in the exhaust passage 52 is directed to the rear end cover 63.

[0193] It should be noted that in this embodiment, the outer arc wall of the exhaust passage 52 and the annular wall portion 55 together form the side wall of the motor flow guide member, and the first inlet 501 does not extend to the annular wall portion 55, that is, the bottom end surface of the annular wall portion 55 is flush with the bottom end surface of the cover plate 53, and the fluid in the intake passage 51 cannot enter the space enclosed by the annular wall portion 55 and the cover plate 53.

[0194] The side wall of the motor flow guide member 5 is provided with a rib portion 56, so as to reserve a certain gap between the side wall of the motor flow guide member 5 and the third filter assembly 3, so as to ensure that the fluid after three-stage filtration can smoothly enter the intake passage 51 from the first inlet 501 opened on the side wall of the motor flow guide member 5.

[0195] The side wall of the motor flow guide member 5 is provided with a plurality of rib portions 56, which are evenly distributed on its side wall to ensure smooth intake of the first inlet 501.

[0196] The overlapping portion 54 is located at one end of the motor flow guide member 5 where the first outlet 502 and the second inlet 503 are provided. The motor flow guide member is hermetically butted with the cover body 25 through the overlapping portion 54, and the first outlet 502 communicates with the air inlet 207, and the second inlet 503 is hermetically communicated with the air outlet 208.

[0197] Specifically, the bottom end surface (the end surface close to the cover body 25) of the overlapping portion 54 is provided with the first outlet 502 and the second inlet 503, and the shape of the bottom end surface of the overlapping portion 4 is adapted to the top end surface of the cover body 25 to ensure smooth intake and exhaust of the motor assembly, and the intake and exhaust do not interfere with each other.

[0198] The bottom end surface of the overlapping portion 54 is provided with an assembly groove 541, and the top end surface of the cover body 25 is provided with an assembly strip 255 adapted to the assembly groove 541. The overlapping portion 54 and the cover body 25 are clamped through the assembly groove 541 and the assembly strip 255. Specifically, the assembly groove 41 is arranged outside each second inlet 503, and the assembly strip 256 is arranged outside each air outlet 208 to ensure that the fluid discharged from the motor assembly enters the exhaust passage 52 through the second inlet 503 and prevent fluid leakage.

[0199] On the top end face of the overlapping part 54, there is an annular protrusion 542. At the bottom of the third filtering component 3, there is an annular clamping groove adapted to the annular protrusion 542. The third filtering component 3 is connected to the motor flow guide member 5 through the annular protrusion 542 and the annular clamping groove, and is disposed around the outer side of the side wall of the motor flow guide member 5, so that all the fluid filtered by the third filtering component 3 at three levels enters the motor air inlet end 421 through the first inlet 501, the air inlet passage 51, the first outlet 502, and the air inlet 207.

[0200] It should be noted that the first inlet 501 extends from the side wall of the motor flow guide member to the annular protrusion 542 of the overlapping part 54 to ensure that the fluid entering from the first inlet 501 passes through the third filtering component 3 for filtering.

[0201] The third filtering component 3 is disposed around the outer side of the motor flow guide member 5. Its bottom is connected to the overlapping part 54, and its top abuts against the rear end cover 63. The fluid secondarily filtered by the cyclone cone 22 of the second filtering component 2 is led out through the air guide port 206, and after being filtered at three levels by the third filtering component 3, all enters the air inlet passage 51 through the first inlet 501.

[0202] The middle cover part 62 corresponds to the third filtering component 3 and is disposed around the outer side of the third filtering component 3.

[0203] In order to accelerate the guiding of the fluid secondarily filtered to the third filtering component 3 more quickly, the side wall of the middle cover part 62 gradually inclines inwards from front to back, which while accelerating the fluid flow rate, reduces the volume at the rear end of the dust collection device and improves the use experience of the dust collection device. In this embodiment, the side wall of the middle cover part 62 is in a horn shape, and the horn opening faces the rear end cover 63.

[0204] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A vacuum cleaning device, characterized in that, Comprising: A filtering device, including a motor assembly cavity (21) and a plurality of cyclone cones (22), and the cyclone cones (22) are disposed around the outside of the motor assembly cavity (21); A motor assembly (4), installed inside the motor assembly cavity (21); A motor flow guide (5), communicating with the motor assembly cavity (21) to introduce the fluid filtered by the filtering device into the motor assembly (4) and discharge the fluid discharged from the motor assembly (4) from inside the motor assembly cavity (21); Wherein, the filtering device includes a first filtering component (1), a second filtering component (2), and a third filtering component (3) arranged from front to back. The second filtering component (2) is provided with the motor assembly cavity (21) and the cyclone cones (22), and the third filtering component (3) is disposed around the outside of the motor flow guide (5); The first filtering component (1) includes a fluid pipeline (11), a filtering part (12), and a flow guiding part (13). The fluid pipeline (11) is provided with a fluid inlet (101) and a fluid outlet (102), and the fluid inlet (101) is hermetically connected to the dust suction port of the dust suction device; the filtering part (12) is disposed around the outside of the fluid pipeline (11); one end of the flow guiding part (13) is connected to the fluid outlet (102), and the other end of the flow guiding part (13) faces the filtering part (12) to guide the fluid in the fluid pipeline to the filtering part; At least a part of the fluid pipeline (11) is surrounded inside the side wall of the first filtering component (1), the filtering part (12) constitutes a part of the side wall of the first filtering component, and a gap is reserved between the side wall of the fluid pipeline (11) and the side wall of the first filtering component (1) for the fluid after primary filtering by the filtering part (12) to flow in the gap; The fluid outlet (102) is opened on the side wall of the first filtering component (1), and the flow guiding part (13) is located on the outer side surface of the side wall of the first filtering component (1); The fluid outlet (102) and the flow guiding part (13) are located above the filtering part (12); The flow guiding part (13) spirally extends from the fluid outlet (102) to the filtering part (12) to cyclone-guide the fluid in the fluid pipeline (11) to the filtering part (12); The flow guiding part (13) includes a transverse plate (131) and a spiral plate (132). The transverse plate (131) is located above the fluid outlet (102), the spiral plate (132) is connected to the transverse plate (131), and the spiral direction of the spiral plate (132) faces the filtering part (12) to spirally guide the fluid to the filtering part (12) for primary filtering and dust removal; the spiral plate (132) includes a connecting end and an extending end. The connecting end is connected to the transverse plate (131), the connecting end spirally extends downward to the extending end, the extending end is located below the fluid outlet (102), and the extending end is located above the filtering part (12); The diversion part (13) further includes a baffle (133). The baffle (133) is located at one end where the fluid outlet (102) is connected to the extended end of the spiral plate (132). The baffle (133) is simultaneously connected to the transverse plate (131), the spiral plate (132), and the side wall of the first filtration component (1). The upper end of the baffle (133) is perpendicularly connected to the lower end face of the transverse plate (131), the lower end of the baffle (133) is perpendicularly connected to the upper end face of the spiral plate (132), and the inner end face of the baffle (133) is perpendicularly connected to one end of the fluid outlet (102) close to the extended end of the spiral plate (132), so that after the fluid is led out from the fluid outlet, it can only be guided to the filtration part along the transverse plate and the spiral plate.

2. The dust collection device according to claim 1, wherein the motor diversion member (5) is located downstream of the second filtration component (2).

3. The dust collection device according to claim 1, characterized in that It further includes a housing (6). An assembly cavity is provided inside the housing (6) for assembling the filtration device, the motor assembly (4), and the motor diversion member (5).

4. The dust collection device according to claim 3, characterized in that, The housing (6) includes a dust collection cup (61), a middle cover part (62), and a rear end cover (63). The dust collection cup (61), the middle cover part (62), and the rear end cover (63) are docked in sequence to jointly form the assembly cavity. The first filtration component (1) and the second filtration component (2) are installed inside the dust collection cup (61). The middle cover part (62) surrounds the outside of the third filtration component (3), and the third filtration component (3) surrounds the outside of the side wall of the motor diversion member (5). The rear end cover (63) is connected to the rear end of the motor diversion member (5).

5. The dust collection device according to claim 4, characterized in that, The side wall of the middle cover part (62) gradually inclines inwards from front to back.

6. The dust collection device according to claim 4, characterized in that, A dust suction port (601) is provided on the dust collection cup (61), and the dust suction port (601) is communicated with the first filtration component (1).

7. The dust collection device according to claim 4, characterized in that, The first filtration component (1) further includes a dust collection ring wall (15). The dust collection ring wall (15) is located between the fluid pipeline (11) and the side wall of the first filtration component (1). The bottom end of the dust collection ring wall (15) is connected to the bottom plate of the first filtration component (1), and there is a gap between the dust collection ring wall (15) and the fluid pipeline (11) and the side wall of the first filtration component (1). A central dust collection space is enclosed among the dust collection ring wall (15), the fluid pipeline (11), and the bottom plate (14) of the first filtration component (1) for storing the dust secondarily filtered by the second filtration component (2). A circulation space is enclosed among the dust collection ring wall (15), the bottom plate (14) of the first filtration component (1), and the first filtration component (1) for the fluid after primary filtration to circulate.

8. The dust collection device according to claim 4, characterized in that, A partition plate (16) is provided at the top end of the side wall of the first filtration component (1). The partition plate (16) surrounds the outside of the side wall of the first filtration component (1), and the partition plate (16) is located above the diversion part (13). The partition plate (16) is in sealed contact with the side wall of the dust collection cup (61).

9. The dust collection device according to claim 7, characterized in that, The second filtration component (2) further includes a dust guiding member (23) and a cover body (25). The dust guiding member (23) is communicated with the central dust collecting space and the cyclone cone (22) to introduce the dust filtered by the cyclone cone (22) into the central dust collecting space; The cover body (25) covers the motor assembly cavity (21) and the cyclone cone (22), and is disposed on the top of the dust collecting cup (61).

10. The dust suction device according to claim 9, characterized in that, The cover body (25) is provided with a wind guiding area (251), an air inlet area (252) and an air outlet area (253); The air outlet area (253) surrounds the outside of the air inlet area (252), the wind guiding area (251) surrounds the outside of the air outlet area (253), and the wind guiding area (251) corresponds to the cyclone cone (22), and the air inlet area (252) and the air outlet area (253) correspond to the motor assembly cavity (21).

11. The dust suction device according to claim 10, wherein The wind guiding area (251) is provided with air guiding openings (206), and the air guiding openings (206) correspond to the cyclone cone (22) one by one, and the air guiding openings (206) are communicated with the cyclone cone (22); The air inlet area (252) is provided with an air inlet (207) communicated with the motor assembly cavity (21); The air outlet area (253) is provided with an air outlet (208) communicated with the motor assembly cavity (21).

12. The dust suction device according to claim 11, characterized in that, The motor assembly (4) includes a motor ring wall (41) and a motor (42); The motor ring wall (41) is located in the motor assembly cavity (21), one end of the motor ring wall (41) abuts against the bottom of the motor assembly cavity (21), the other end of the motor ring wall (41) abuts against the cover body (25), and there is a gap between the motor ring wall (41) and the side wall of the motor assembly cavity (21); The motor (42) is installed in the motor ring wall (41).

13. The dust collection device according to claim 12, characterized in that, The motor ring wall (41) divides the motor assembly cavity (21) into two cavities, namely a first cavity and a second cavity, and the second cavity surrounds the outside of the first cavity; The motor (42) is installed in the first cavity; The first cavity corresponds to the air inlet area (252), and the air inlet (207) is communicated with the first cavity; The second cavity corresponds to the air outlet area (253), and the air outlet (208) is communicated with the second cavity; The motor (42) includes an air inlet end (421) and an air outlet end (422), and the air inlet end (421) is communicated with the air inlet (207); A communication port (401) capable of communicating the first cavity and the second cavity is formed on the motor ring wall (41), at least a part of the communication port (401) is opposite to the air outlet end (422), and the communication port (401) is far from the air outlet (208).

14. The dust collection device according to claim 11, characterized in that, The motor air guiding member (5) is connected with the cover body (25); The motor air guiding member (5) includes an air inlet channel (51) and an exhaust channel (52), the air inlet channel (51) is communicated with the air inlet (207), and the exhaust channel (52) is communicated with the air outlet (208).

15. The dust collection device according to claim 14, characterized in that, The air inlet channel (51) is provided with a first inlet (501) and a first outlet (502), and the first outlet (502) is communicated with the air inlet (207); The exhaust passage (52) is provided with a second inlet (503) and a second outlet (504), and the second inlet (503) is in communication with the air outlet (208).

16. The dust suction device according to claim 15, characterized in that, The motor flow guide member (5) includes a first end and a second end. The first end is connected to the cover body (25), and the second end is connected to the rear end cover (63). The first inlet (501) is arranged on the side wall of the motor flow guide member, and the first outlet (502) is arranged at the first end. The second inlet (503) is arranged at the first end, and the second outlet (504) is arranged at the second end.

17. The dust suction device according to claim 16, wherein Cover plates (53) and lapping portions (54) are respectively arranged at both ends of the motor flow guide member. The cover plate (53) is located at the second end and is provided with the second outlet (504). The cover plate (53) is hermetically covered on the top of the air inlet passage (51) and the first inlet (501). The lapping portion (54) is located at the first end and is provided with the first outlet (502) and the second inlet (503). The lapping portion (54) is connected to the cover body (25). The first outlet (502) is in communication with the air inlet (207), and the second inlet (503) is hermetically in communication with the air outlet (208).

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