CN115211749A

CN115211749A - Fan subassembly and handheld dust catcher

Info

Publication number: CN115211749A
Application number: CN202210530690.6A
Authority: CN
Inventors: 戴逢焱
Original assignee: Suzhou Simple Youwei Technology Co Ltd
Current assignee: Suzhou Simple Youwei Technology Co Ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-21
Also published as: CN116458801A

Abstract

The invention discloses a fan assembly and a handheld dust collector. The fan is used to generate a suction airflow. The filtering piece is used for filtering the exhaust airflow of the fan. The fan cover is limited with a fan accommodating cavity for accommodating at least part of the fan and a filter accommodating cavity for accommodating at least part of the filter; the fan cover still injects the air-out passageway that has the intercommunication fan to hold the chamber and filter and hold the chamber, and the width direction air-out passageway along the fan cover is located the fan and holds one side in chamber, and the air-out passageway includes import and export, is provided with the wind channel that the width direction of following the fan cover is buckled and is extended between the import and the export of air-out passageway. The air outlet channel is arranged on one side of the transverse direction of the fan, and meanwhile, the air outlet channel is bent and extended, so that the noise generated by the fan can be effectively reduced.

Description

Fan subassembly and handheld dust catcher

Technical Field

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

Background

Vacuum cleaners, whether for domestic or industrial use, are widely used and the suction unit is primarily a fan assembly which generates a suction airflow to draw dirt from a surface to be cleaned into a dirt cup or bag.

As the rotating speed of the motor in the fan assembly is higher and higher, the noise generated by the motor is also higher and higher, and therefore, how to effectively reduce the noise generated by the fan assembly has become a key point of research of various manufacturers.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the fan assembly and the handheld dust collector, which can effectively reduce the noise generated by the fan.

In one aspect, the present invention provides a fan assembly comprising

A fan for generating a suction airflow;

the filter element is used for filtering the exhaust airflow of the fan;

a fan guard defining a fan receiving cavity for receiving at least a portion of the fan and a filter receiving cavity for receiving at least a portion of the filter element; the fan cover is further limited with an air outlet channel communicated with the fan accommodating cavity and the filtering piece accommodating cavity, the air outlet channel is located on one side of the fan accommodating cavity along the width direction of the fan cover and comprises an inlet and an outlet, and an air channel bent and extended along the width direction of the fan cover is arranged between the inlet and the outlet of the air outlet channel.

Optionally, the outlet of the air outlet channel is provided with a plurality of air outlet holes.

Optionally, an outlet area of the air outlet channel is an arc-shaped outlet area, and the arc-shaped outlet area protrudes in a direction away from the fan accommodating cavity in the width direction of the fan cover.

Optionally, filter and be fan ring shape, filter and include air inlet face and air-out face, the area of air inlet face is less than air-out face area.

Optionally, the filter element is removably mounted to a filter element receiving cavity defined by the fan guard along a length of the fan guard.

Optionally, the fan guard includes a front housing and a rear housing that together define a fan receiving cavity, the front housing and the rear housing together define a filter receiving cavity, and the outlet air channel is defined solely by the rear housing.

Optionally, the front housing defines a mounting aperture to which the filter element is removably mounted.

Optionally, the air outlet channel includes an upward extending vertical section, a horizontal section extending along the width direction, and an oblique section extending obliquely downward, which are sequentially communicated.

Optionally, the fan guard is provided with a line passing hole, and the line passing hole is communicated with the air outlet channel and the outer space of the fan guard.

In another aspect, the invention also provides a hand-held cleaner, which is characterized by comprising

A body defining a suction duct;

the fan assembly is arranged on the machine body and used for generating suction airflow flowing along the suction pipeline.

The invention provides a fan assembly and a handheld dust collector. The fan is used to generate a suction airflow. The filtering piece is used for filtering the exhaust airflow of the fan. The fan cover is limited with a fan accommodating cavity for accommodating at least part of the fan and a filter accommodating cavity for accommodating at least part of the filter; the fan cover still injects the air-out passageway that has the intercommunication fan to hold the chamber and filter and hold the chamber, and the width direction air-out passageway along the fan cover is located the fan and holds one side in chamber, and the air-out passageway includes import and export, is provided with the wind channel that the width direction of following the fan cover is buckled and is extended between the import and the export of air-out passageway. The air outlet channel is arranged on one side of the transverse direction of the fan, and meanwhile, the air outlet channel is bent and extended, so that the noise generated by the fan can be effectively reduced.

Further, set up into the fan-shaped ring with filtering, not only can increase filter area, can also further reduce the noise.

Drawings

FIG. 1 is a schematic diagram of a cleaning system according to an embodiment of the present invention;

FIG. 2 is a schematic view of a hand-held vacuum cleaner in one embodiment;

FIG. 3 is a cross-sectional view of the hand-held cleaner of FIG. 2 taken along the direction F-F;

FIG. 4 is a cross-sectional view of the hand-held cleaner of FIG. 2 taken along the line E-E;

FIG. 5 is a cross-sectional view of the hand-held cleaner of FIG. 2 taken along the line G-G;

FIG. 6 is a schematic diagram of a fan assembly according to one embodiment;

FIG. 7 is an exploded view of the fan assembly in one embodiment;

FIG. 8 is a schematic diagram of a fan guard according to one embodiment;

FIG. 9 is a cross-sectional view of the rear housing taken along the direction H-H in FIG. 7;

FIG. 10 is a cross-sectional view of the rear housing of FIG. 7 taken at another angle in the direction H-H;

FIG. 11 is a schematic view of a filter element according to one embodiment;

FIG. 12 is a schematic view of a cover of the surface cleaning apparatus in a closed position according to an embodiment;

FIG. 13 is a schematic view of an embodiment of a surface cleaning apparatus with the cover in an open position;

FIG. 14 is a schematic diagram of an embodiment of a dirt cup assembly;

FIG. 15 is a schematic view of the dust cup assembly with the dust discharge opening in an embodiment;

FIG. 16 isbase:Sub>A cross-sectional view at an angle along the line A-A in FIG. 14;

FIG. 17 isbase:Sub>A cross-sectional view at another angle along the line A-A in FIG. 14;

FIG. 18 isbase:Sub>A cross-sectional view at yet another angle along the line A-A in FIG. 14;

FIG. 19 is a schematic view of the leakage air inlet of the dirt cup assembly in one embodiment;

FIG. 20 is a cross-sectional view at an angle along the direction B-B in FIG. 19;

FIG. 21 is a cross-sectional view at another angle in the direction B-B of FIG. 19;

FIG. 22 is a schematic view of the dirt cup assembly shown with the bottom wall removed in one embodiment;

FIG. 23 is a schematic view of an embodiment of a cover cooperating with a switch structure;

FIG. 24 is a schematic view of the switch structure in the locked state;

fig. 25 is a schematic structural view of the switch structure in the unlocked state.

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 referred to in the embodiment of the present invention, the directional indication is only used for explaining a relative positional relationship, a 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 of the 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 cases.

Fig. 1 is a schematic structural diagram of a cleaning system according to an embodiment of the invention. Fig. 2 is a schematic structural view of a handheld vacuum cleaner in one embodiment. Figure 3 is a cross-sectional view of the hand-held cleaner of figure 2 taken along the direction F-F. Figure 4 is a cross-sectional view of the hand-held cleaner of figure 2 taken along the direction E-E. Figure 5 is a cross-sectional view of the hand-held cleaner of figure 2 taken along the direction G-G. FIG. 6 is a schematic diagram of a fan assembly according to an embodiment. FIG. 7 is an exploded view of a fan assembly according to one embodiment. FIG. 8 is a schematic diagram of a fan guard according to one embodiment. Fig. 9 is a sectional view of the rear housing of fig. 7 taken along the direction H-H. Fig. 10 is another angular cross-sectional view of the rear housing of fig. 7 taken along the direction H-H. Fig. 11 is a schematic view of a filter element according to an embodiment. FIG. 12 is a schematic view of a cover of the surface cleaning apparatus in a closed position according to an embodiment. Fig. 13 is a schematic structural view of a cover of a surface cleaning apparatus in an open state in an embodiment. Figure 14 is a schematic diagram of an embodiment of a dirt cup assembly. FIG. 15 is a schematic view of the dust cup assembly with the dust discharge opening in an embodiment. Fig. 16 isbase:Sub>A cross-sectional view at an angle along the directionbase:Sub>A-base:Sub>A in fig. 14. Fig. 17 isbase:Sub>A cross-sectional view at another angle along the directionbase:Sub>A-base:Sub>A in fig. 14. Fig. 18 isbase:Sub>A cross-sectional view at yet another angle along the directionbase:Sub>A-base:Sub>A in fig. 14. Figure 19 is a schematic view of the dirt cup assembly leakage inlet in one embodiment. Fig. 20 is a cross-sectional view at an angle along the direction B-B in fig. 19. Fig. 21 is a cross-sectional view at another angle along the direction B-B in fig. 19. Figure 22 is a schematic view of an embodiment of the dirt cup assembly shown with the bottom wall removed. Fig. 23 is a schematic structural view illustrating the cooperation between the cover and the switch structure in one embodiment. Fig. 24 is a schematic view of the switch structure in the locked state. Fig. 25 is a schematic structural view of the switch structure in the unlocked state. Referring to fig. 1, fig. 1 discloses a cleaning system 100 comprising a hand-held cleaner and a base station 20. Hand-held cleaners are used to clean surfaces to be cleaned. The base station 20 is used for docking the handheld vacuum cleaner 101, and a suction motor is arranged in the base station 20 and used for generating suction force to transfer dirt in the dust collection chamber into a dust collection cavity of the base station 20 through the dust discharge port. When the hand-held vacuum cleaner 101 is placed on the base station 20, the user can control the suction motor in the base station 20 to be activated by the button, and then the dirt in the dirt cup assembly of the hand-held vacuum cleaner 101 is sucked into the dust collecting cavity of the base station 20 by the airflow generated by the suction motor. The dust collecting cavity can be provided with a disposable dust bag or a dust collecting device.

Referring to fig. 2-3, the direction of arrow X is the length direction of the hand-held cleaner, the direction Y is the width direction, and the direction Z is the height direction. The hand-held cleaner 101 comprises a main body 10, a cleaning head 30 and an extension pipe 40 connecting the main body 10 and the cleaning head 30. The main body 10 includes a body 2, a dirt cup assembly 1, a fan assembly 3, a battery pack 4, and a filter member 33. The dust cup assembly 1, the fan assembly 3, the battery pack 4, the filter member 33, and the like can be detachably mounted on the machine body 2. The battery pack 4 powers the fan assembly 3, and the fan assembly 3 generates a suction airflow which draws dirt from the surface to be cleaned along the suction duct 21 into the dirt cup assembly 1. A battery pack 4 is provided at the lower end of the handle 22 for powering the motor in the fan assembly 3.

Body 2

Referring to fig. 2 to 7, the body 2 includes a handle 22 for gripping, and the body 2 defines a suction duct 21. The machine body 2 is arranged below the dust cup component 1 when being horizontally arranged. Specifically, the body 2 includes a handle 22 and a support portion 26 at an angle to the handle 22, the support portion 26 for supporting the dirt cup assembly 1 and the motor assembly, the support portion 26 defining the suction duct 21. The housing 2 is provided with an outer cover for accommodating the fan assembly 3. A display screen may be provided on the housing, preferably at the rear of the housing, so that a user can visually observe the use status of the handheld cleaner 101 when in use. The shape of display screen can match with the shape of the back wall of dustcoat, becomes the ellipse, and wherein including two areas side by side, an area can show the electric quantity, and another area can show parameters such as suction, dirty degree. The body 2 includes a front end 23 and a rear end 24 in the extending direction of the suction duct 21, and the front end 23 of the body 2 is provided with a charging terminal 25. The charging terminal 25 is provided below the dust cup assembly 1 in the height direction of the hand-held cleaner 101. The handle 22 is also provided with a trigger 27, the trigger 27 is used for controlling the start and stop of the handheld dust collector 101, the outer surface of the trigger 27 is basically flush with the outer surface of the handle 22, the trigger 27 moves in an image after being stressed to trigger the micro switch so as to turn on or off the handheld dust collector 101, and the outer surface of the trigger 27 is basically flush with the outer surface of the handle 22 so as to prevent a user from touching the handheld dust collector by mistake.

Fan assembly 3

Referring to fig. 6-11, the direction of arrow X is the length direction of the hand-held cleaner (fan assembly), the Y direction is the width direction, and the Z direction is the height direction. A fan assembly 3 is provided to the body 2 for generating a suction airflow. The fan assembly 3 is disposed above the handle 22. The fan assembly 3 and the battery pack 4 are respectively arranged at two ends of the handle 22. The fan assembly 3 includes a fan 31, a filter member 33, and a fan cover 32. The fan 31 and the filter member 33 are respectively located on both sides of the handle axis O in the width direction of the hand-held cleaner 101, and the fan 31 is used to generate suction airflow. The filter member 33 is used for filtering the exhaust air flow of the fan 31. The fan guard 32 defines a fan receiving cavity 321 that receives at least a portion of the fan 31 and a filter receiving cavity 322 that receives at least a portion of the filter element 33. The fan guard 32 also defines an air outlet passage 323 communicating with the fan receiving cavity 321 and the filter receiving cavity 322. The air outlet channel 323 is located at one side of the fan accommodating cavity 321 along the width direction of the fan cover 32, the air outlet channel 323 comprises an inlet and an outlet, and an air duct bent and extending along the width direction of the fan cover 32 is arranged between the inlet and the outlet of the air outlet channel 323. With continued reference to fig. 9 and 10, the direction of the arrow in the figures is the direction of the flow of the outlet air of the fan. The air outlet channel 323 comprises an upward extending vertical section, a horizontal section extending along the width direction and an inclined section extending obliquely downward which are communicated in sequence. Of course, the air outlet channel 323 may be bent and extended horizontally in addition to the up-down bending and extending manner shown in the figure, that is, the air outlet channel 323 may be extended forward and then extended backward, and bent and extended to the outlet as a whole. Of course, the bend extension may also extend at any angle or path within the fan guard 32.

Referring to fig. 8 to 11, the outlet of the outlet duct 323 is provided with a plurality of outlet holes 324. The outlet area of the air outlet channel 323 is an arc-shaped outlet area which protrudes in the width direction of the fan guard 32 in a direction away from the fan accommodating chamber 321. Specifically, the air outlet holes 324 are substantially distributed over the entire arc-shaped outlet area, and the concave cavity formed by the arc-shaped outlet area faces the position of the fan 31. In order to match the arc-shaped outlet area, the filter member 33 is in a fan-shaped ring shape, the filter member 33 includes an air inlet surface 331 and an air outlet surface 332, and the area of the air inlet surface 331 is smaller than that of the air outlet surface 332. The air inlet surface 331 faces the arc outlet area, and the air outlet surface 332 is far away from the arc outlet area, so that the filter 33 adopts a fan-shaped ring shape, and the noise can be further reduced while the filtering area is increased. The filter element 33 may be a filter hypa, a filter sponge or be made of another filter material.

Referring to fig. 7-9, the filter element 33 is removably mounted to the filter receiving cavity 322 defined by the fan guard 32 along the length of the fan guard 32. The fan guard 32 defines a mounting aperture 327 therein and the filter element 33 is mountable to the filter element receiving cavity 322 from the mounting aperture 327. In this embodiment, the filter member 33 is removable from the mounting aperture 327 only when the dirt cup assembly 1 is removed from the housing 2.

Referring to fig. 7-11, the fan guard 32 includes a front housing 325 and a rear housing 326, the front housing 325 and the rear housing 326 collectively defining the fan receiving cavity 321, the front housing 325 and the rear housing 326 collectively defining the filter receiving cavity 322, and the air outlet channel 323 is defined solely by the rear housing 326. The front housing 325 defines a mounting aperture 327 for the removable filter element 33. The fan cover 32 is provided with a wire through hole 328, and the wire through hole 328 communicates the air outlet channel 323 with the external space of the fan cover 32. The motor wires may extend from the fan receiving cavity 321 to the outside of the fan guard 32 through the wire passing holes 328.

Dust cup assembly 1

Referring to fig. 12-14, and also to fig. 2-5, the dirt cup assembly 1 is disposed on the body 2 forwardly of the fan assembly 3 in the direction of extension of the suction duct 21. The dirt cup assembly 1 includes a cyclone 12 and a dirt collection chamber 13, the cyclone 12 and the dirt collection chamber 13 are communicated via a dust slinger 14, and the cyclone 12 and the dirt collection chamber 13 are arranged side by side in the width direction of the hand-held cleaner 101.

Referring to fig. 14-19, the dirt cup assembly 1 includes a housing 11, the housing 11 including a sidewall 111 and a bottom wall 112 defining a cyclonic separation chamber 12 and a dirt collection chamber 13 therein, at least a portion of the sidewall 111 and at least a portion of the bottom wall 112 collectively defining the dirt collection chamber 13 for collecting dirt. The dust collecting chamber 13 is provided outside the cyclone chamber 12 and communicates with the cyclone chamber 12 through an ash slinger 14. Specifically, the housing 11 is oval-shaped and divided into two parts in the width direction thereof, one part is the cyclone chamber 12, and the inner wall of the cyclone chamber 12 is cylindrical, so that the separation efficiency can be effectively improved. The dust collecting chamber 13 is disposed at one side of the cyclone chamber 12, the housing 11 includes a peripheral wall and a bottom wall 112, a cover 132 is disposed on the bottom wall 112, and the cover 132 is used for opening/closing the dust discharging opening 131 of the dust collecting chamber 13. The housing 11 includes a first end 113 and a second end 114 opposite to the first end 113 along the length direction of the dirt cup assembly 1, the bottom wall 112 is disposed at the first end 113, the bottom wall 112 is provided with an ash discharge port 131 and a cover 132 for opening/closing the ash discharge port 131, and the ash dump port 14 is disposed near the second end 114.

Referring to fig. 16-21, the area of the dust discharge opening 131 is smaller than the cross-sectional area of the dirt cup assembly 13 in a direction perpendicular to the length of the dirt cup assembly 1. A guiding structure 18 is arranged between the side wall 111 and the dust outlet 131 for guiding the dirt in the dust collecting chamber 13 to the dust outlet 131. The dirt passage defined by the guide formation 18 becomes progressively smaller in the direction extending from the second end 114 to the first end 113. The guide structure 18 is essentially trumpet-shaped, the inner diameter of the guide structure 18 becoming smaller towards the ash discharge 131. The use of a smaller area for the dust discharge opening 131 than the cross-sectional area of the dust collecting chamber 13 results in that part of the dirt will get stuck to the edge of the dust collecting chamber 13 near the dust discharge opening 131 when the dust collecting chamber 13 is emptied. The dirt at the edge position is not easily cleaned, and therefore, a guide structure 18 is provided between the dust discharge opening 131 and the side wall 111 to guide the dirt to avoid the edge above the dust discharge opening 131 for smooth discharge from the dust discharge opening 131. Further, the cover 132 has an area larger than that of the dust discharge port 131 and smaller than the cross-sectional area of the dust collecting chamber 13.

To open/close the cover 132, the dirt cup assembly 1 is further provided with a switch structure 15. The switch structure 15 is provided at the bottom wall 112. The opening and closing structure 15 is used for unlocking the cover 132 so that the cover 132 can move relative to the bottom wall 112 to open the dust discharge port 131 of the dust collecting chamber 13, and at least part of the opening and closing structure 15 penetrates through the bottom wall 112. Referring to fig. 23-25, the arrows indicate the direction in which the parts may be moved. The switch structure 15 includes a touch member 151 and a lock member 152, and the touch member 151 is forced to make the lock member 152 in an unlocked state. The trigger 151 penetrates the bottom wall 112, and the trigger 151 can be triggered by an external structure from below the bottom wall 112 without providing other structures around the side wall 111. The triggering member 151 moves in a direction perpendicular to the bottom wall 112 to drive the locking member 152 to move in a direction parallel to the bottom wall 112. The outer surface of the touch member 151 is substantially in the same plane as the outer surface of the bottom wall 112, so that the touch member 151 can be effectively prevented from being touched by mistake.

Referring to fig. 19-21, the inner wall 111 of the cyclone chamber 12 is provided with an air inlet 122, and the air inlet 122 is disposed at the first end 113 of the housing 11. The cyclonic separating chamber 12 further comprises a guide wall 121, the guide wall 121 serving to guide the airflow entering from the inlet 122 into the cyclonic separating chamber 12 for cyclonic separation. A mounting cavity 16 is defined between the guide wall 121 and the bottom wall 112, and at least a portion of the switch structure 15 is disposed in the mounting cavity 16. Thus, the space can be effectively saved. Referring to the figures, the height of the air inlet 122 is greater than the height of the guide structure 18 along the length of the dirt cup assembly 1. The height of the guiding structure 18 is relatively small, which effectively increases the effective volume of the dust collecting chamber 13 while performing a guiding function.

Referring to fig. 14 to 15, the dust discharge port 131 is provided at the corresponding bottom wall 112 of the dust collection chamber 13. In other embodiments, the ash discharge 131 may also partially or completely cover the corresponding bottom wall 112 of the cyclonic separating chamber 12. Specifically, the bottom wall 112 includes a first region 115 corresponding to the cyclone chamber 12 and a second region 116 corresponding to the dust collecting chamber 13, and the trip member 151 is disposed at the first region 115. The area of the cover 132 is smaller than the area of the first region 115. The smaller area of the cover 132 can effectively reduce the contact area of the base station 20, and at the same time, the smaller area of the cover 132 (i.e. the area of the dust discharge port 131) can increase the suction force, so that the dust in the dust cup assembly 1 can be more easily sucked into the dust collecting chamber. The edge of the dust discharge port 131 is located inside the edge of the side wall 111.

Referring to fig. 14-15, the dirt cup assembly 1 further includes a locking structure 17 for unlocking/locking the dirt cup assembly 1, the locking structure 17 being located at the intersection of the first region 115 and the second region 116 of the bottom wall 112. The locking structure 17 includes a button 171, and the button 171 protrudes from the bottom wall 112.

The cover 132 includes an open state and a closed state, and the cover 132 is provided with a retaining structure 133, and the retaining structure 133 is configured to keep the cover 132 in the closed state at all times without being subjected to an external force. When the hand-held cleaner 101 is placed in the base station 20, the cover 132 is in an openable state, but under the action of the retaining structure 133, the cover 132 continues to seal the dust discharge opening 131, and if there is dirt at the dust discharge opening 131 and the gravity of the dirt is large, the cover 132 may be opened. When the suction motor in the base station 20 is started, a large suction force is generated, and at this time, the suction force acting on the cover 132 overcomes the force generated by the holding structure 133 to open the cover 132, and at this time, the dirt in the dust collecting chamber 13 is sucked into the dust collecting chamber. When the suction motor is stopped, the cover 132 is returned to the closed position by the retaining structure 133, and is in the closed state. The retaining structure 133 may be a torsion spring, although other mechanical structures are possible.

Referring to fig. 16-21, the second end 114 of the dirt cup assembly 1 is provided with a filter holder 51, opposite ends of the filter holder 51 are provided with a first filter 52 and a second filter 53, respectively, the first filter 52 being disposed within the cyclonic separating chamber 12 and the second filter 53 being disposed outside the cyclonic separating chamber 12. The cross-sectional area of the second filter 53, taken in a plane perpendicular to the separation axis, is greater than the cross-sectional area of the cyclonic separating chamber 12 and less than the cross-sectional area of the dirt cup assembly 1. The first filter 52 and the second filter 53 are both pre-motor filters.

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 fan assembly, comprising

A fan for generating a suction airflow;

the filter element is used for filtering the exhaust airflow of the fan;

2. The fan assembly of claim 1,

and the outlet of the air outlet channel is provided with a plurality of air outlet holes.

3. The fan assembly of claim 1,

the outlet area of the air outlet channel is an arc-shaped outlet area, and the arc-shaped outlet area protrudes in the width direction of the fan cover along the direction far away from the fan accommodating cavity.

4. The fan assembly of claim 1,

the filtering piece is in a fan ring shape and comprises an air inlet surface and an air outlet surface, and the area of the air inlet surface is smaller than the area of the air outlet surface.

5. The fan assembly of claim 1,

the filter element is removably mounted to a filter element receiving cavity defined by the fan guard along a length of the fan guard.

6. The fan assembly of claim 1,

the fan guard includes a front housing and a rear housing that collectively define a fan receiving cavity, the front housing and the rear housing collectively define a filter receiving cavity, and the air outlet passage is individually defined by the rear housing.

7. The fan assembly of claim 6,

the front housing defines a mounting aperture to which the filter element is removably mounted.

8. The fan assembly of claim 1,

the air outlet channel comprises an upward extending vertical section, a horizontal section extending along the width direction and an oblique downward extending inclined section which are sequentially communicated.

9. The fan assembly of claim 1,

the fan cover is provided with a wire passing hole which is communicated with the air outlet channel and the outer space of the fan cover.

10. A hand-held cleaner is characterized by comprising

A body defining a suction duct;

a fan assembly as claimed in any one of claims 1 to 9 disposed on the body for generating a suction airstream flowing along the suction duct.