CN114794971A

CN114794971A - Vacuum cleaner

Info

Publication number: CN114794971A
Application number: CN202210725712.4A
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: 2022-07-29
Anticipated expiration: 2042-06-24
Also published as: CN115251758A; CN115251758B; CN114794971B

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 separation chamber and a dirt collection chamber. The dirt cup assembly also includes an air outlet disposed in the cyclonic separation chamber and a first filter disposed in the air outlet, the first filter being rotatably disposed at the air outlet to filter the airflow before exiting 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 dirt cup assembly also includes a fan disposed on the first filter, the fan being rotated by an airflow generated by the fan to rotate the first filter, the fan including a proximal end proximate to the axis of rotation and a distal end distal from the axis of rotation in a radial direction, the proximal end of the fan being disposed in suspension to define a channel.

Description

Vacuum cleaner

Technical Field

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

Background

Vacuum cleaners have been receiving much attention from users as a cleaning apparatus having a high market acceptance. The vacuum cleaner generally includes a dirt cup assembly. To improve separation efficiency, the dirt cup assembly is typically provided with a cyclonic separator.

Cyclone separators in the prior art generally have an integrated structure and a split structure, and the integrated structure is that a cyclone separating chamber and a dust collecting chamber are arranged in a dust cup. The separating structure is that the cyclone separating chamber and the dust collecting chamber are separately arranged. 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 hair enters the filter structure, the hair can be wound on the rotating shaft and/or the fan, so that the fan is possibly disabled, the performance of the filter structure is influenced, and the fan is further influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a dust collector, wherein a rotatable first filter is arranged in a dust cup assembly, the shaft end near the fan for driving the first filter is suspended and matched with a 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 airflow;

the dust cup assembly comprises a cyclone separating chamber and a dust collecting chamber, wherein the cyclone separating chamber is arranged on the outer side of the dust collecting chamber and is communicated with the dust collecting chamber through an ash throwing port; the dirt cup assembly further includes an air outlet disposed in the cyclonic separation chamber and a first filter disposed at the air outlet, the first filter being rotatably disposed at the air outlet to filter the airflow before exiting 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 component or the dust cup component;

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 by the fan, the fan comprises a near shaft end close to the rotation axis and a far shaft end far away from the rotation axis in the radial direction, and the near shaft end of the fan is arranged in a hanging mode to limit a channel.

Optionally, the air conditioner further comprises a filter support, the first filter is rotatably mounted on the filter support, the second filter is detachably mounted 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 proximal to the air outlet and a second end distal to 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 portion of the mounting bracket extends through the passage, and a proximal end of the fan is cantilevered with respect to the mounting bracket.

Optionally, the mounting bracket 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 frame, the filter frame includes a fan mounting bracket and a bearing mounting bracket for mounting the fan, the bearing mounting bracket is disposed in the accommodating groove, at least one bearing is disposed in the accommodating groove, and the filter frame is rotatably mounted to the mounting frame through the at least one bearing.

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

Optionally, the first filter defines an interior space of a truncated cone or pyramid type, the first filter including a first end proximate the air outlet and a second end distal from the air outlet, the first end having an outer diameter greater than an outer diameter of the second end.

Optionally, a baffle extending in the dust collection chamber is provided at the dust ejection port to block a portion of the dirt in the dust collection chamber from being drawn back into the cyclone 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 airflow. The dust cup assembly comprises a cyclone separating chamber and a dust collecting chamber, the cyclone separating chamber is arranged on the outer side of the dust collecting chamber and is communicated with the dust collecting chamber through an ash throwing port; the dirt cup assembly also includes an air outlet disposed in the cyclonic separation chamber and a first filter disposed in the air outlet, the first filter being rotatably disposed at the air outlet to filter the airflow before exiting 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 dirt cup assembly also includes a fan disposed on the first filter, the fan being rotated by an airflow generated by the fan to rotate the first filter, the fan including a proximal end proximate to the axis of rotation and a distal end distal from the axis of rotation in a radial direction, the proximal end of the fan being disposed in suspension to define a channel. Through being provided with rotatable first filter in the dirt cup subassembly, the nearly axle head unsettled setting 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 vacuum cleaner according to an embodiment of the present invention;

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

FIG. 3 is an exploded view of the hand-held cleaner of FIG. 1 at another angle;

FIG. 4 is a schematic diagram of an embodiment of a dirt cup assembly;

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 line B-B in FIG. 4;

FIG. 7 is a schematic view of the positional relationship of the first and second filters 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 the area 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 of a first filter with a fan and a stationary shaft installed 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 view 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 lower filter support in an embodiment as viewed from the first end toward the second end;

FIG. 16 is a schematic view of the lower filter support in an embodiment as viewed from the second end toward the first end;

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

fig. 18 is a schematic structural view of a first filter in another embodiment.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment 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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Fig. 1 is a schematic structural view of a handheld vacuum cleaner according to an embodiment of the present invention. Fig. 2 is an exploded view of the hand-held cleaner shown in fig. 1. Fig. 3 is an exploded view of the hand-held cleaner of fig. 1 at another angle. FIG. 4 is a schematic diagram of an embodiment of a dirt cup assembly. Fig. 5 is a sectional view taken along a-a direction 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 showing the installation of the first filter in another embodiment. FIG. 11 is a schematic view of a first filter with a fan and a stationary shaft installed in one embodiment. Fig. 12 is an enlarged view of a structure of a region D shown in fig. 5. Fig. 13 is a schematic structural diagram of a fan in an embodiment. Fig. 14 is a schematic structural view of the fan at another angle. Fig. 15 is a schematic structural view of the lower filter frame viewed from the first end toward the second end in one embodiment. Fig. 16 is a schematic structural view of the lower filter frame viewed from the second end toward the first end in one embodiment. Referring to fig. 1-6, a vacuum cleaner 10 is disclosed, the vacuum cleaner 10 including a housing, and a fan assembly 3 and a 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 separation chamber 12 and a dirt collection chamber 13. The cyclone chamber 12 is provided outside the dust collecting chamber 13 and communicates with the dust collecting chamber 13 through an ash ejection port 14. The cyclonic separation chamber 12 is used to separate dirt and gas from the dirt-laden 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 collecting chamber 13 through the dust throwing port 14, and the separated gas flows toward the fan 31 from the gas outlet 123. In order to improve the separation efficiency, the dirt cup assembly 1 further includes an air outlet 123 provided at the cyclonic separating chamber 12 and a first filter 7 provided at the air outlet 123, the first filter 7 being rotatably provided at the air outlet 123 to filter the airflow before it is discharged from the air outlet 123; the first filter 7, while filtering, may throw some hairs into the ash slinger 14.

Referring to fig. 2 and 3, a second filter 53 is also provided downstream of the air outlet 123 of the dirt cup assembly and upstream of the fan 31, the second filter 53 being disposed between the fan 31 and the air outlet 123 for filtering the air flowing from the air outlet 123 before it enters the fan 31. The second filter 53 is mounted to the fan assembly 3 or the dirt cup assembly 1. The second filter 53 has a sectional area larger than that of the outlet port 123 in a direction perpendicular to the rotational axis P of the first filter 7, and further, the second filter 53 has an area larger than that of the cyclone chamber 12 and smaller than that of the dirt cup assembly 1. The larger the area of the second filter 53 is, the better the air flow 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, a fan 8 may be used to drive the first filter 7 to rotate, the fan 8 is disposed on the first filter 7, the fan 8 is driven to rotate by the airflow generated by the fan and is connected to the first filter 7, and the two may be directly fixed and connected to each other 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 transmission connection, the transmission ratio between the two can be adjusted through the transmission mechanism, so that the speed of the fan 8 is larger or smaller 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, and a prismatic shape. The first filter 7 includes a filter frame 71 and a filter screen 74 disposed on the filter frame 71, the filter screen 74 may be a metal mesh, and the metal mesh may be fixed to the filter frame 71 by gluing or other methods after being processed. Of course, the filter screen 74 may also be integrally formed with the filter frame 71. The first filter 7 further comprises at least one guiding rib 76 arranged outside the filtering net 74, the guiding rib 76 protrudes out of the outer surface formed by the filtering net 74, and the guiding rib 76 extends along the circumferential direction and the length direction of the first filter 7. The guide ribs 76 prevent hairs and the like from abutting against the filter net 74 and guide the hairs to move downward so as to be separated from the first filter 7. Because the direction of rotation of the first filter 7 is the same as the direction of rotation of the airflow in the cyclonic separating chamber 12, the probability of hair tangling can be effectively reduced because, if the direction of rotation of the first filter 7 is the same as the direction of rotation of the dust, the speed difference between the two can be effectively reduced, and at the same time, the hair can be directly thrown towards the dust-throwing opening 14 due to the effect of 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 on the filter holder 71 is gradually thrown off during the rotation of the first filter 7 and then enters the dust throwing port 14. That is, first filter 7 includes a first end 72 near air outlet port 123 and a second end 73 remote from air outlet port 123, and first end 72 has an outer diameter larger than that of second end 73. The second end 73 is suspended in the cyclone chamber 12, and the outer diameter of the first filter 7 is gradually reduced in a direction away from the air outlet 123. So that the first filter 7 hangs like a truncated cone structure within the cyclonic separating chamber 12 to facilitate the shedding of hairs from the second end 73. The first filter 7 may be of a truncated cone shape, a truncated pyramid shape, or a cone shape as a whole, which facilitates hair shedding. To further enhance the chance of hair falling, the guide ribs 76 on the first filter 7 extend in both the circumferential direction and the longitudinal 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, because hair and dust inevitably enter the first filter, the hair is likely to be wound on the rotating shaft of the fan, so that the fan is jammed or cannot rotate. The invention thus uses a special fan 8 in conjunction with the first filter 7 to reduce the accumulation of dust and hair at the fan 8. Referring to fig. 8-14, and particularly 11, 13 and 14, the fan 8 includes a proximal end 84 proximate the axis of rotation P and a distal end 83 distal from the axis of rotation P in a radial direction, the proximal end 84 of the fan 8 being disposed in suspension to define a passageway 85. The distal axial end 83 of the fan 8 may be mounted to the first filter 7 either internally of the first filter 7 or externally of 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 the center of the fan 8 is a hollow structure for an object to pass through. The fan 8 comprises a plurality of fan blades 81, two ends of each fan blade 81 are fixed on the corresponding circular ring, and the space defined by the inner circular ring can ensure that objects can freely pass through the space. Further, the fan 8 includes a plurality of blades 81, and the proximal ends 84 of the plurality of blades 81 are all suspended. In some other implementations, fan blades 81 may be molded directly onto filter frame 71. In another implementation, the fan 8 can be a separately manufactured part, and the fan 8 can be fixed to the inside or outside of the filter frame 71 by clamping, gluing, or ultrasonic welding after the manufacturing. Flabellum 81 adopts unsettled mode, can increase the circulation of air area on the one hand, and on the other hand, can effectively avoid the hair to twine on flabellum 81.

Referring to fig. 3 and 4, in order to facilitate the installation 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 front and rear sides, wherein the first filter 7 is mounted at one side, and the cleaner 10 includes a mounting bracket 75 for supporting the first filter 7, the mounting bracket 75 being provided at the air outlet 123 for supporting the first filter 7. Mounting bracket 75 is disposed at outlet port 123, and it should be understood that mounting bracket 75 may be disposed in outlet port 123, or may be disposed at a position near upstream and downstream of outlet port 123, and the specific position is not limited in detail here. Referring to fig. 8-11, first filter 7 includes a first end 72 proximate air outlet 123 and a second end 73 distal air outlet 123, first end 72 being cantilevered with respect to mounting bracket 75, and second end 73 being rotatably mounted to mounting bracket 75 such that first filter 7 is rotatable with respect to mounting bracket 75. Referring to the drawings, mounting bracket 75 includes a support member 751 fixed to outlet port 123, and support member 751 is a cross-shaped support structure, although in other implementations, support member 751 may be any support structure for rotatably mounting first filter 7 to outlet port 123. The support 751 may include a downwardly extending mounting structure for mounting the first filter 7. To facilitate the mounting and dismounting 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. Bearing 753 is mounted on the end of stationary shaft 752 remote from outlet 123. In particular, the first filter 7 is mounted to one end of a fixed shaft 752 by means of a bearing 753, the other end of the fixed shaft 752 being fixed to the support structure so that the fixed shaft 752 is stationary relative to the support structure, the advantage of the stationary shaft 752 relative to the support structure being that the chance of hair entering the interior of the first filter 7 becoming entangled may be reduced. Further, the fixing shaft 752 is detachably mounted to the support structure, so that the user can easily detach the fixing shaft to clean the first filter 7, even if foreign materials such as hairs remain inside the first filter 7, the user can simply clean the fixing shaft. In one implementation, the outer periphery of the end of the fixed shaft 752 remote from the bearing 753 is provided with an elastomeric material, in an interference fit with the mounting bracket 75. In other implementations, the fixing shaft 752 may be detachably disposed on the mounting frame 75 by a screw connection, a snap connection, or the like. The stationary shaft 752 is stationary with respect to the mounting bracket 75, and even if some hair is wound around the stationary shaft 752, it will not affect the fan 8.

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 frame 75 by the at least one bearing 753. The filter frame 71 further comprises a plurality of guide ribs 76 for connecting the fan mounting bracket 78 and the bearing mounting bracket 79, a filter screen 74 is mounted between two adjacent guide ribs 76, and the guide ribs 76 protrude out of 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 more than or equal to 3, so that the structure is more stable, and hair falling is facilitated. The plurality of guide ribs 76 define a truncated cone-shaped or truncated pyramid-shaped receiving space. The filter frame 71 and the guide rib 76 may be integrally formed, and the filter net 74 is disposed inside the guide rib 76. At least one bearing 753 is disposed within the receiving slot 713, and the filter carrier 71 is rotatably mounted to the mounting bracket 75 by the at least one bearing 753. The receiving groove 713 includes a bottom wall and a peripheral wall extending upward along a periphery of the bottom wall, the bottom wall and the peripheral wall collectively defining the receiving groove 713, and the receiving groove 713 includes an opening for mounting the bearing 753. The accommodating groove 713 is arranged in such a way that sundries can be well prevented from entering the accommodating groove 713 so as not to influence the smooth operation of the bearing 753. The bearings 753 are two in number and arranged side by side in the axial direction. The arrangement of two bearings 753 side by side effectively increases the stability of the first filter 7. The end of the fixed shaft 752 remote from the bearing 753 is detachably mounted to the mounting bracket 75. Referring to fig. 9 and 10, and also to fig. 15, the length of the bearing mounting bracket 79 can be adjusted to suit the application, and in particular, the bearing mounting bracket 79 can extend to the first end 72 of the first filter 7 even beyond the first end 72, so that the length of the stationary shaft 752 can be reduced or a shorter first filter 7 can be accommodated. Even if the bearing mounting bracket 79 is long, it is understood that the first filter 7 is rotatably mounted via the second end 73 as long as the first end 72 of the first filter 7 is suspended with respect to the mounting bracket 75 or other fixed structure and moves relative thereto. Part of the mounting bracket 75 extends through the passage 85 and the proximal end 84 of the fan 8 is cantilevered relative to the mounting bracket 75.

Referring to fig. 2 and 3, a second filter 53 is mounted to the other side of the filter holder 51. The filter holder 51 has a recess defined in the other side thereof, and a second filter 53 is detachably mounted in the recess. 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 the two. 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 can 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 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 guard plate 77 extending outwardly in the radial direction. The protection plate 77 is in clearance fit with the filter support 51, and a zigzag channel is formed between the protection plate and the filter support to prevent dust and hair from entering.

Referring to fig. 5 and 12, the dust slinger 14 is provided with a baffle 9 extending within the dirt collection chamber 13 to block dirt in the dirt collection chamber 13 from being drawn back into the cyclonic separation chamber 12. Referring to the figures, the dust slinger 14 is provided with a baffle 9 extending within the dirt collection chamber 13 to block dirt in the dirt collection chamber 13 from being drawn back into the cyclonic separation chamber 12. Since the dust slinger 14 is located closer to the first filter 7, a baffle 9 extending within the dust collection chamber 13 is provided at the dust slinger 14 in order to prevent dust in the dust collection chamber 13 from being drawn back into the cyclonic separation chamber 12. The baffle 9 can be a straight baffle 9 or a bent baffle 9, and the suspended end of the baffle 9 can be inclined towards the bottom of the dust collection chamber 13 to achieve better anti-back-drawing effect. In order to further prevent the hair in the dust collecting chamber 13 from being drawn back into the cyclone chamber 12, the side of the baffle plate 9 facing the bottom of the dust collecting chamber 13 is provided with at least one protrusion 92 protruding towards the bottom of the dust collecting chamber 13. Thus, when the hair enters the dust collecting chamber 13, the hair may first come under the baffle plate 9 due to the disturbance of the airflow, and a part of the hair may return to the dust ejection opening 14 along the edge of the baffle plate 9, and if the protrusion 92, especially the plurality of protrusions 92 separately provided, is provided under the baffle plate 9, the hair, dust and the like can be effectively fixed at the protrusion 92, and can be prevented from being drawn back.

Figure 17 is a cross-sectional view of a dirt cup assembly taken along the direction of the axis of rotation in another embodiment. Fig. 18 is a schematic structural view of a first filter in another embodiment. The structure in this embodiment can be the structure described in the above embodiment, except that the first filter 7 is mounted in a different manner from that in the other embodiments. Referring to fig. 17 and 18, in another implementation, 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. Thus, since the supporting member 751 and the fixing shaft 752 are eliminated, the inside of the first filter 7 is substantially empty, and hair is not substantially entangled, improving the reliability of the first filter 7.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims

1. A vacuum cleaner, comprising:

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

2. The vacuum cleaner of claim 1,

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

3. The vacuum cleaner of claim 2,

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

4. The vacuum cleaner of claim 1,

further comprising a mounting bracket for supporting the first filter, the first filter including a first end proximate the air outlet and a second end distal 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.

5. The vacuum cleaner of claim 4,

part of the mounting bracket penetrates through the channel, and the near-axis end of the fan is arranged in a hanging mode relative to the mounting bracket.

6. The vacuum cleaner of claim 5,

the mounting bracket includes support piece and demountable installation in support piece's fixed axle, the second end of first filter install in the fixed axle is kept away from the one end of gas outlet.

7. The vacuum cleaner of claim 4,

the first filter comprises a filter frame, the filter frame comprises a fan mounting support and a bearing mounting support, the fan mounting support is used for mounting a fan, the bearing mounting support is arranged in the accommodating groove, at least one bearing is arranged in the accommodating groove, and the filter frame is rotatably mounted on the mounting frame through the at least one bearing.

8. The vacuum cleaner of claim 7,

the filter rack further comprises a plurality of guide ribs used for connecting the fan mounting support and the bearing mounting support, a filter screen is mounted between every two adjacent guide ribs, and the guide ribs protrude out of the outer surface formed by the filter screen.

9. The vacuum cleaner of claim 1,

the first filter defines a truncated cone or truncated pyramid shaped interior space, the first filter includes a first end proximate the air outlet and a second end distal from the air outlet, the first end having an outer diameter greater than an outer diameter of the second end.

10. The vacuum cleaner of claim 1,

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