CN115251758B

CN115251758B - Dust collector

Info

Publication number: CN115251758B
Application number: CN202210971909.6A
Authority: CN
Inventors: 戴逢焱
Original assignee: Suzhou Simple Youwei Technology Co Ltd
Current assignee: Suzhou Simple Youwei Technology Co Ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2023-06-09
Anticipated expiration: 2042-06-24
Also published as: CN114794971A; CN114794971B; CN115251758A

Abstract

The invention discloses a dust collector, which comprises a fan assembly and a dust cup assembly. The fan assembly includes a fan. The dirt cup assembly includes a cyclonic separating chamber and a dirt collection chamber. The dust cup assembly further comprises an air outlet arranged in the cyclone separation chamber and a first filter arranged at the air outlet, and the first filter is rotatably arranged at the air outlet to filter air flow before being discharged from the air outlet. The dust collector also comprises a second filter arranged between the fan and the air outlet and used for filtering the air flow flowing out of the air outlet before entering the fan, and the second filter is arranged on the fan assembly or the dust cup assembly. The dust cup assembly further comprises a fan arranged on the first filter, the fan is driven to rotate by air flow generated by the fan, so that the first filter is driven to rotate, the fan comprises a near shaft end close to the rotation axis and a far shaft end far away from the rotation axis along the radial direction, and the near shaft end of the fan is arranged in a suspending mode to limit a channel.

Description

Dust collector

The present application is a divisional application of a chinese patent application with application number 202210725712.4 and the name "cleaner", 24 days of 2022, 06.

Technical Field

The invention relates to the technical field of cleaning equipment, in particular to a dust collector.

Background

Dust collectors have been attracting attention as a cleaning device with high acceptance in the market. The vacuum cleaner generally includes a dirt cup assembly. To improve the separation efficiency, the dirt cup assembly is typically provided with a cyclone separator.

The cyclone separator in the prior art is generally divided into an integral structure and a separate structure, wherein the integral structure is that a cyclone separation chamber and a dust collection chamber are arranged in a dust cup. The split structure is provided with a cyclone separation chamber and a dust collecting chamber separately. In order to improve the separation effect in the cyclone separation chamber, a rotatable filtering mechanism can be arranged in the cyclone separation chamber. However, the filter structure is generally driven by the fan through the rotating shaft, and after the hair enters the filter structure, the filter structure is wound on the rotating shaft and/or the fan, so that the fan is likely to be disabled, and the performance of the filter structure and the fan are affected.

Disclosure of Invention

Aiming at the defects in the technology, the invention provides the dust collector, wherein the dust cup component is internally provided with the rotatable first filter, and the near-axis end of the fan driving the first filter is suspended and matched with the second filter, so that the filtering efficiency can be improved, and the normal operation of the fan and the first filter can be ensured.

In a first aspect, the present invention provides a vacuum cleaner comprising:

a fan assembly including a fan for generating a suction airstream;

the dust cup assembly comprises a cyclone separation chamber and a dust collection chamber, wherein the cyclone separation chamber is arranged at the outer side of the dust collection chamber and is communicated with the dust collection chamber through an ash throwing port; the dust cup assembly further comprises an air outlet arranged in the cyclone separation chamber and a first filter arranged at the air outlet, and the first filter is rotatably arranged at the air outlet to filter air flow before being discharged from the air outlet;

the second filter is arranged between the fan and the air outlet and is used for filtering the air flow flowing out of the air outlet before entering the fan, and the second filter is arranged on the fan assembly or the dust cup assembly;

the dust cup assembly further comprises a fan arranged on the first filter, the fan is driven to rotate by air flow generated by the fan, so that the fan drives the first filter to rotate, the fan comprises a near shaft end close to a rotation axis and a far shaft end far away from the rotation axis along the radial direction, and the near shaft end of the fan is arranged in a suspending mode to define a channel.

Optionally, the air conditioner further comprises a filter support, the first filter is rotatably installed on the filter support, the second filter is detachably installed on the filter support, and the area of the second filter is larger than that of the air outlet.

Optionally, the filter holder is removably mounted to the dirt cup assembly.

Optionally, the filter further comprises a mounting bracket for supporting the first filter, the first filter comprising a first end adjacent to the air outlet and a second end remote from the air outlet, the second end being rotatably mounted to the mounting bracket such that the first filter is rotatable relative to the mounting bracket.

Optionally, a part of the mounting frame penetrates through the channel, and a proximal shaft end of the fan is suspended relative to the mounting frame.

Optionally, the mounting frame includes a support member and a fixing shaft detachably mounted to the support member, and the second end of the first filter is mounted to an end of the fixing shaft away from the air outlet.

Optionally, the first filter includes a filter holder, the filter holder includes a fan mounting bracket and a bearing mounting bracket for mounting a fan, the bearing mounting bracket is disposed in a receiving groove, at least one bearing is disposed in the receiving groove, and the filter holder is rotatably mounted in the mounting bracket through the at least one bearing.

Optionally, the filter frame further includes a plurality of guide ribs for connecting the fan mounting bracket and the bearing mounting bracket, a filter screen is installed between two adjacent guide ribs, and the guide ribs protrude out of an outer surface formed by the filter screen.

Optionally, the first filter defines a truncated cone-shaped or prismatic internal space, and the first filter includes a first end near the air outlet and a second end far from the air outlet, and an outer diameter of the first end is larger than an outer diameter of the second end.

Optionally, a baffle plate extending in the dust collection chamber is arranged at the dust throwing port to prevent part of dirt in the dust collection chamber from being pumped back into the cyclone separation chamber.

The invention provides a dust collector which comprises a fan assembly and a dust cup assembly. The fan assembly includes a fan for generating a suction airstream. The dust cup component comprises a cyclone separation chamber and a dust collection chamber, wherein the cyclone separation chamber is arranged at the outer side of the dust collection chamber and is communicated with the dust collection chamber through an ash throwing port; the dust cup assembly further comprises an air outlet arranged in the cyclone separation chamber and a first filter arranged at the air outlet, and the first filter is rotatably arranged at the air outlet to filter air flow before being discharged from the air outlet. The dust collector also comprises a second filter arranged between the fan and the air outlet and used for filtering the air flow flowing out of the air outlet before entering the fan, and the second filter is arranged on the fan assembly or the dust cup assembly. The dust cup assembly further comprises a fan arranged on the first filter, the fan is driven to rotate by air flow generated by the fan, so that the first filter is driven to rotate, the fan comprises a near shaft end close to the rotation axis and a far shaft end far away from the rotation axis along the radial direction, and the near shaft end of the fan is arranged in a suspending mode to limit a channel. Through being provided with rotatable first filter in the dirt cup subassembly, the unsettled setting of paraxial end of the fan of first filter, with the cooperation of second filter, can improve filtration efficiency, can guarantee the normal operating of fan and first filter again.

Drawings

FIG. 1 is a schematic view of a hand-held cleaner according to an embodiment of the present invention;

FIG. 2 is an exploded view of the hand cleaner of FIG. 1;

FIG. 3 is an exploded view of the handheld cleaner of FIG. 1 at an alternative angle;

FIG. 4 is a schematic view of the structure of a dirt cup assembly in one embodiment;

FIG. 5 is a cross-sectional view taken along the line A-A in FIG. 4;

FIG. 6 is a cross-sectional view taken along the direction B-B in FIG. 4;

FIG. 7 is a schematic view of the positional relationship of the first filter and the second filter relative to the filter holder;

FIG. 8 is an exploded view of the first filter mounted to the filter holder;

FIG. 9 is an enlarged view of the structure of region C of FIG. 5;

FIG. 10 is a schematic view of the installation of a first filter in another embodiment;

FIG. 11 is a schematic view showing the structure of a first filter having a fan and a fixed shaft mounted thereto in one embodiment;

FIG. 12 is an enlarged view of the structure of the area D shown in FIG. 5;

FIG. 13 is a schematic diagram of a fan according to an embodiment;

FIG. 14 is a schematic view of a fan at another angle;

FIG. 15 is a schematic view of the structure of the filter frame from the first end toward the second end in one embodiment;

FIG. 16 is a schematic view of the structure of the filter holder from the second end toward the first end in one embodiment;

FIG. 17 is a cross-sectional view of another embodiment of a dirt cup assembly in the direction of the axis of rotation;

fig. 18 is a schematic view showing the structure of a first filter in another embodiment.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In the case where a directional instruction is involved in the embodiment of the present invention, the directional instruction is merely used to explain the relative positional relationship, movement condition, etc. between the components in a specific posture, and if the specific posture is changed, the directional instruction is changed accordingly.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application can be understood by those of ordinary skill in the art in a specific context.

Fig. 1 is a schematic view of a hand-held cleaner according to an embodiment of the invention. Fig. 2 is an exploded view of the hand cleaner of fig. 1. Figure 3 is an exploded view of the hand cleaner of figure 1 at an alternative angle. FIG. 4 is a schematic diagram of a dirt cup assembly in accordance with one embodiment. Fig. 5 is a cross-sectional view taken along the direction A-A in fig. 4. Fig. 6 is a sectional view taken along the direction B-B in fig. 4. Fig. 7 is a schematic view showing the positional relationship of the first filter and the second filter with respect to the filter holder. Fig. 8 is an exploded view of the first filter mounted to the filter holder. Fig. 9 is an enlarged view of the structure of the region C shown in fig. 5. Fig. 10 is a schematic view of the installation of a first filter in another embodiment. Fig. 11 is a schematic view showing a structure of a first filter in which a fan and a fixed shaft are installed in one embodiment. Fig. 12 is an enlarged view of the structure of the region D shown in fig. 5. Fig. 13 is a schematic structural diagram of a fan according to an embodiment. Fig. 14 is a schematic view of a fan at another angle. Fig. 15 is a schematic view of the structure of the filter frame at an angle from the first end toward the second end in an embodiment. Fig. 16 is a schematic view showing the structure of the filter holder at an angle from the second end toward the first end in one embodiment. Referring to Figs. 1-6, there is disclosed a vacuum cleaner 10, the vacuum cleaner 10 comprising a housing and a blower assembly 3 and dirt cup assembly 1 disposed on the housing. As shown in fig. 1, the fan assembly 3 is disposed behind the dirt cup assembly 1. The fan assembly 3 comprises a fan 31 for generating a suction air flow. Referring to fig. 5 and 6, the dirt cup assembly 1 includes a cyclonic separating chamber 12 and a dirt collection chamber 13. The cyclone separation chamber 12 is disposed outside the dust collection chamber 13 and communicates with the dust collection chamber 13 through an ash throwing port 14. The cyclone chamber 12 is used for dust-gas separation of a dirty airflow. The cyclonic separating chamber 12 comprises an air inlet 122 and an air outlet 123, the air inlet 122 and the air outlet 123 being located at respective ends of the cyclonic separating chamber 12. The separated dust is thrown into the dust collection chamber 13 through the dust throwing port 14, and the separated gas flows from the gas outlet 123 to the fan 31. In order to improve the separation efficiency, the dirt cup assembly 1 further comprises an air outlet 123 arranged in the cyclone separation chamber 12 and a first filter 7 arranged at the air outlet 123, wherein the first filter 7 is rotatably arranged at the air outlet 123 to filter the air flow before being discharged from the air outlet 123; the first filter 7 can throw some hairs into the dust throwing port 14 while filtering.

Referring to fig. 2 and 3, a second filter 53 is further provided downstream of the air outlet 123 of the dirt cup assembly and upstream of the blower 31, the second filter 53 being provided between the blower 31 and the air outlet 123 for filtering the air flow exiting from the air outlet 123 before entering the blower 31. The second filter 53 is mounted to the fan assembly 3 or the dirt cup assembly 1. The cross-sectional area of the second filter 53 in a direction perpendicular to the axis of rotation P of the first filter 7 is larger than the cross-sectional area of the air outlet 123, and further the area of the second filter 53 is larger than the cross-sectional area of the cyclone chamber 12 and smaller than the cross-sectional area of the dirt cup assembly 1. The larger the area of the second filter 53 is, the better the airflow circulation effect thereof is, thereby improving the filtering effect and the suction efficiency. In order to rotate the first filter 7, a drive member is required to power the first filter 7. Referring to fig. 7 and 8, in order to save cost, the fan 8 may be used to drive the first filter 7 to rotate, the fan 8 is disposed on the first filter 7, and the fan 8 is driven to rotate by the air flow generated by the fan and is connected to the first filter 7, which may be directly and fixedly connected, or may be in transmission connection. If the two are fixedly connected, the fan 8 and the first filter 7 can rotate synchronously. If the two are in driving connection, the transmission ratio between the two can be adjusted by the transmission mechanism so that the speed of the fan 8 is greater or less than the rotation speed of the first filter 7.

Referring to fig. 5 to 12, the first filter 7 may have one of a conical shape, a truncated cone shape, a cylindrical shape, a truncated pyramid shape, or a prismatic shape. The first filter 7 includes a filter frame 71 and a filter screen 74 disposed on the filter frame 71, where the filter screen 74 may be a metal mesh, and the metal mesh may be glued or otherwise fixed to the filter frame 71 after being processed. Of course, the filter screen 74 may be integrally formed with the filter frame 71. The first filter 7 further includes at least one guide rib 76 disposed outside the filter screen 74, the guide rib 76 protruding from an outer surface formed by the filter screen 74, the guide rib 76 extending in both the circumferential direction and the longitudinal direction of the first filter 7. The guide ribs 76 prevent hairs or the like from abutting against the filter screen 74, and at the same time guide the hairs to move downwards so as to disengage the hairs from the first filter 7. Since the rotation direction of the first filter 7 is the same as the rotation direction of the air flow in the cyclone chamber 12, the possibility of hair entanglement can be effectively reduced, because if the rotation direction of the first filter 7 is the same as the rotation direction of the dust, the speed difference between the two can be effectively reduced, and simultaneously, the hair can be directly thrown to the dust throwing port 14 due to the centrifugal force of the first filter 7. Referring to fig. 11, 12, 15 and 16, the outer diameter of the first filter 7 gradually decreases in a direction away from the air outlet 123. I.e. the hair wound around the filter frame 71 is gradually thrown off during the rotation of the first filter 7 and then enters the dust throwing port 14. That is, the first filter 7 includes a first end 72 near the air outlet 123 and a second end 73 far from the air outlet 123, the first end 72 having an outer diameter larger than that of the second end 73. The second end 73 is suspended in the cyclone chamber 12, and the outer diameter of the first filter 7 gradually decreases in a direction away from the air outlet 123. So that the first filter 7 hangs like a truncated cone within the cyclonic separating chamber 12 to facilitate the removal of hair from the second end 73. The first filter 7 may be truncated cone, pyramid or cone shaped as a whole to facilitate hair loss. To further enhance the chance of hair falling off, the guide ribs 76 on the first filter 7 extend both in the circumferential direction and in the length direction of the first filter 7. The longitudinal direction is a direction from the first end 72 toward the second end 73.

In the prior art, hair and dust inevitably enter the first filter, and the hair is likely to be wound on the rotating shaft of the fan, so that the fan is blocked or cannot rotate. The invention thus employs a special fan 8 in combination with the first filter 7 to reduce the accumulation of dust and hair at the fan 8. Referring to fig. 8-14, and in particular 11, 13, 14, the fan 8 includes a proximal shaft end 84 proximate the axis of rotation P and a distal shaft end 83 distal from the axis of rotation P in a radial direction, the proximal shaft end 84 of the fan 8 being cantilevered to define a passageway 85. The distal shaft end 83 of the fan 8 may be mounted to the first filter 7 either inside the first filter 7 or outside the filter. In some implementations, referring to fig. 11, a fan 8 is disposed in the first filter 7, the fan 8 may be annular, and a hollow structure is disposed at the center of the fan 8, so that objects can pass through conveniently. The fan 8 includes a plurality of fan blades 81, and both ends of the fan blades 81 are fixed to corresponding circular rings, and a space defined by the inner circular rings can ensure free penetration of objects. Further, the fan 8 includes a plurality of fan blades 81, and proximal shaft ends 84 of the fan blades 81 are all suspended. In some other implementations, the fan blades 81 may be molded directly onto the filter frame 71. In another implementation, the fan 8 may be a separately manufactured piece, and the fan 8 may be fastened to the inside or outside of the filter frame 71 by clamping, gluing, ultrasonic welding, or the like after manufacturing. The fan blade 81 adopts a suspending mode, so that on one hand, the air flow area can be increased, and on the other hand, the hair can be effectively prevented from being wound on the fan blade 81.

Referring to fig. 3 and 4, in order to facilitate the mounting of the first filter 7 and/or the second filter 53, the cleaner 10 is further provided with a filter holder 51, the first filter 7 being rotatably mounted to the filter holder 51, and the second filter 53 being detachably mounted to the filter holder 51. Referring to fig. 7, the filter holder 51 includes opposite sides, in which the first filter 7 is mounted on one side, and the cleaner 10 includes a mounting frame 75 for supporting the first filter 7, the mounting frame 75 being disposed at the air outlet 123 for supporting the first filter 7. The mounting frame 75 is disposed at the air outlet 123, and it should be understood that the mounting frame 75 may be disposed in the air outlet 123, or may be disposed at a position near the upstream and downstream of the air outlet 123, and the specific position is not limited herein in detail. Referring to fig. 8-11, the first filter 7 includes a first end 72 proximate the air outlet 123 and a second end 73 distal from the air outlet 123, the first end 72 being suspended relative to the mounting frame 75, the second end 73 being rotatably mounted to the mounting frame 75 such that the first filter 7 is rotatable relative to the mounting frame 75. Referring to the drawings, the mounting frame 75 includes a support 751 fixed to the air outlet 123, the support 751 being a cross support structure, although in other implementations, the support 751 may be any support structure for rotatably mounting the first filter 7 to the air outlet 123. The support 751 may comprise a downwardly extending mounting structure for mounting the first filter 7. To facilitate the disassembly and assembly of the first filter 7, the mounting bracket 75 further includes a fixing shaft 752 detachably mounted to the support 751, instead of the mounting structure of the support 751. The bearing 753 is mounted on an end of the stationary shaft 752 remote from the air outlet 123. In particular, the first filter 7 is mounted to one end of the stationary shaft 752 via bearings 753, the other end of the stationary shaft 752 being fixed to the support structure such that the stationary shaft 752 is stationary relative to the support structure, which has the advantage that the chance of hair getting inside the first filter 7 will be entangled is reduced. Further, the fixing shaft 752 is detachably mounted on the supporting structure, so that a user can conveniently detach the fixing shaft to clean the first filter 7, and even if sundries such as hair remain in the first filter 7, the user only needs to clean the fixing shaft simply. In one implementation, the outer circumference of the end of the stationary shaft 752 remote from the bearing 753 is provided with an elastomeric material that is in an interference fit with the mounting frame 75. In other implementations, the fixing shaft 752 may be detachably disposed on the mounting frame 75 through a threaded connection, a clamping connection, or the like. The stationary shaft 752 is stationary relative to the mounting 75 and does not affect the fan 8 even if some hair is wound around the stationary shaft 752.

Referring to fig. 15 and 16, the first filter 7 includes a filter frame 71, the filter frame 71 includes a fan mounting bracket 78 for mounting the fan 8 and a bearing mounting bracket 79, the bearing mounting bracket 79 is provided with a receiving groove 713, at least one bearing 753 is provided in the receiving groove 713, and the filter frame 71 is rotatably mounted to the mounting bracket 75 through the at least one bearing 753. The filter frame 71 further includes a plurality of guide ribs 76 for connecting the fan mounting bracket 78 and the bearing mounting bracket 79, the filter screen 74 is installed between two adjacent guide ribs 76, and the guide ribs 76 protrude from the outer surface formed by the filter screen 74. The fan mounting bracket 78 and the bearing mounting bracket 79 are connected by a plurality of guide ribs 76. The number of the guide ribs 76 is 3 or more, so that the structure can be more stable, and hair falling is facilitated. The plurality of guide ribs 76 define a frustoconical receiving space or frustum-shaped receiving space. The filter frame 71 and the guide rib 76 may be integrally formed, and the filter screen 74 is disposed inside the guide rib 76. At least one bearing 753 is provided in the accommodation groove 713, and the filter frame 71 is rotatably mounted to the mounting frame 75 through the at least one bearing 753. The receiving groove 713 includes a bottom wall and a peripheral wall extending upwardly along the periphery of the bottom wall, the bottom wall and the peripheral wall together defining the receiving groove 713, the receiving groove 713 including an opening for mounting the bearing 753. The accommodating groove 713 is arranged in this way, so that sundries can be well prevented from entering the accommodating groove 713, and the smooth operation of the bearing 753 is not affected. The number of bearings 753 is two, and they are arranged side by side in the axial direction. The stability of the first filter 7 can be effectively increased by arranging two bearings 753 side by side. The end of the stationary shaft 752 remote from the bearing 753 is detachably mounted to the mounting frame 75. Referring to fig. 9 and 10, and also referring to fig. 15, the length of the bearing mounting bracket 79 may be adjusted according to practical situations, and in particular, the bearing mounting bracket 79 may extend to the first end 72 of the first filter 7 even beyond the first end 72, so that the length of the fixing shaft 752 may be reduced or the first filter 7 may be adapted to be relatively short. Even if the bearing mounting bracket 79 is long, it is understood that the first filter 7 is rotatably mounted through the second end 73, as long as the first end 72 of the first filter 7 is suspended relative to the mounting bracket 75 or other fixed structure and the two are relatively movable. Part of the mounting frame 75 extends through the channel 85 and the proximal shaft end 84 of the fan 8 is suspended relative to the mounting frame 75.

Referring to fig. 2 and 3, a second filter 53 is installed at the other side of the filter holder 51. The other side of the filter holder 51 defines a recess in which the second filter 53 is detachably mounted. The filter holder 51 may be part of the dirt cup assembly 1, may be part of the fan assembly 3, or may be independent of both. In one implementation, the filter holder 51 is removably mounted to the dirt cup assembly 1. Further, at least a portion of the filter holder 51 may be mounted within a receiving cavity defined by the dirt cup assembly 1. In another implementation, the filter holder 51 may be mounted to the fan assembly 3, with the filter holder 51 still remaining on the motor assembly when the dirt cup is removed by the user. In other implementations, the filter holder 51 can be detached separately with the dirt cup assembly 1 and motor assembly stationary. Referring to fig. 15 and 16, and also to fig. 9, the outer periphery of the first end 72 is provided with a shield plate 77 extending outwardly in the radial direction. The shielding plate 77 is in clearance fit with the filter holder 51, and a meandering passage is formed therebetween, preventing dust and hair from entering.

Referring to fig. 5 and 12, a baffle 9 extending within the dust collection chamber 13 is provided at the dust throwing port 14 to block a portion of the dirt within the dust collection chamber 13 from being drawn back into the cyclone chamber 12. Referring to the figure, a baffle 9 extending in the dust collecting chamber 13 is provided at the dust throwing port 14 to block part of the dirt in the dust collecting chamber 13 from being drawn back into the cyclone separating chamber 12. Since the dust throwing port 14 is closer to the first filter 7, a baffle 9 extending in the dust collecting chamber 13 is provided at the dust throwing port 14 in order to prevent dust in the dust collecting chamber 13 from being drawn back into the cyclone separating chamber 12. The baffle 9 may be a straight baffle 9 or a curved baffle 9, and the suspended end of the baffle 9 may be inclined toward the bottom of the dust chamber 13 to achieve a better anti-suck-back effect. In order to further prevent hairs in the dust chamber 13 from being drawn back into the cyclone chamber 12, the side of the baffle 9 facing the bottom of the dust chamber 13 is provided with at least one projection 92 projecting in the direction of the bottom of the dust chamber 13. Thus, when the hair enters the dust collecting chamber 13, the hair will reach under the baffle 9 due to the disturbance of the air flow, and a part of the hair may return to the dust throwing port 14 along the edge of the baffle 9, and if the protrusions 92, especially the plurality of protrusions 92 arranged separately, are arranged under the baffle 9, the hair and dust and the like can be effectively fixed to the protrusions 92, and prevented from being sucked back.

FIG. 17 is a cross-sectional view of another embodiment of a dirt cup assembly in a direction of an axis of rotation. Fig. 18 is a schematic view showing the structure of a first filter in another embodiment. The structure in this embodiment may employ the structure described in the above embodiment except for the mounting manner of the first filter 7, which is different from that in the other embodiments. Referring to fig. 17 and 18, in another embodiment, the outer circumference of the first filter 7 is provided with an outer bearing 82, and is mounted at the air outlet 123 (or the filter holder 51) through the outer bearing 82. In this way, since the supporting member 751 and the fixing shaft 752 are eliminated, the inside of the first filter 7 is substantially empty, hair is not substantially entangled, and reliability of the first filter 7 is improved.

Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A vacuum cleaner, comprising:

a fan assembly including a fan for generating a suction airstream;

2. A vacuum cleaner as claimed in claim 1, wherein,

the filter assembly further comprises a mounting bracket for supporting the first filter, wherein the first filter comprises a first end close to the air outlet and a second end far away from the air outlet, and the second end is rotatably mounted on the mounting bracket so that the first filter can rotate relative to the mounting bracket.

3. A vacuum cleaner as claimed in claim 2, wherein,

part of the mounting frame penetrates through the channel, and the proximal shaft end of the fan is arranged in a suspending mode relative to the mounting frame.

4. A vacuum cleaner according to claim 3, wherein,

the mounting frame comprises a supporting piece and a fixing shaft which is detachably arranged on the supporting piece, and the second end of the first filter is arranged at one end, far away from the air outlet, of the fixing shaft.

5. A vacuum cleaner as claimed in claim 2, wherein,

the first filter comprises a filter frame, the filter frame comprises a fan mounting bracket and a bearing mounting bracket, the fan mounting bracket is used for mounting a fan, the bearing mounting bracket is provided with at least one bearing in a containing groove, and the filter frame is rotatably mounted on the mounting bracket through the at least one bearing.

6. A vacuum cleaner according to claim 5, wherein,

the filter frame further comprises a plurality of guide ribs for connecting the fan mounting bracket and the bearing mounting bracket, a filter screen is arranged between two adjacent guide ribs, and the guide ribs protrude out of the outer surface formed by the filter screen.

7. A vacuum cleaner as claimed in claim 1, wherein,

the first filter defines a truncated cone-shaped or prismatic internal space, and includes a first end proximate to the air outlet and a second end distal to the air outlet, the first end having an outer diameter greater than an outer diameter of the second end.

8. A vacuum cleaner as claimed in claim 1, wherein,

the dust throwing opening is provided with a baffle plate extending in the dust collecting chamber so as to prevent part of dirt in the dust collecting chamber from being sucked back into the cyclone separation chamber.