CN211324701U - Vacuum cleaner - Google Patents

Abstract

The utility model provides a dust collector, include: the air purifier comprises a shell, a motor, a power supply assembly, a first filtering assembly and a second filtering assembly, wherein the shell is provided with a first end far away from a user and a second end close to the user, the first end is provided with an air inlet pipe and an air outlet, and the second end is provided with a handle; power supply module, first filtering component and second filtering component all set up in the casing, and the motor sets up between second filtering component and gas vent, and first filtering component is close to first end, and second filtering component and power supply module set up in the handle both sides. Through optimizing the position of each subassembly in the middle of the dust catcher, under the prerequisite of guaranteeing high clean effect, structural configuration is compact, and the volume is less, and the complete machine focus does benefit to the operation. Meanwhile, the position of the exhaust port is adjusted, so that the exhaust direction faces away from a user, the user is not impacted by airflow generated by exhaust gas in the exhaust port when the dust collector is used, and the user experience is improved.

Description

Vacuum cleaner

Technical Field

The utility model relates to a cleaning device technical field especially relates to a dust catcher.

Background

The vacuum cleaner is a common household appliance and is favored by more and more families in recent years. The vacuum cleaner is subdivided into various categories such as a horizontal vacuum cleaner and a sweeping robot, wherein the wireless handheld vacuum cleaner becomes one of the most popular categories of the vacuum cleaner by virtue of portability, convenience and multiple applicable scenes.

The user directly grips the dust catcher host computer when using hand-held type dust catcher and uses, feels in order to reduce the tired of user's use, promotes and uses the portability, and reasonable overall arrangement dust catcher each part to make and grip the moment reasonable, convenient to use is the problem that needs key solution in the hand-held type dust catcher product design. The prior art discloses a hand-held vacuum cleaner layout scheme. In the scheme, one end of the two ends of the handle is connected with the motor, and the other end of the handle is connected with the battery, so that the gravity center of the whole machine is close to the holding position of the handle, and the purpose of facilitating the operation of the dust collector is achieved. But this scheme also has not enough place, and first the motor is arranged in the handle top for the motor direction of airing exhaust is located the complete machine rear, and when the user used, the user on one's body can be blown to the hot-blast of dust catcher exhaust, brings not good experience for the user. Secondly, the air inlet direction of the motor is vertical to the air outlet direction of the secondary separator, and the airflow from the secondary separator needs to be turned by 90 degrees and then enters the air inlet of the motor, so that the wind resistance is increased. The prior art also discloses another hand-held vacuum cleaner layout scheme, and this scheme places the motor in the separator top, and the separator air-out direction is the same with the motor direction of admitting air for the windage between motor and the separator is less, and simultaneously, the motor air outlet arranges in complete machine the place ahead, has avoided complete machine to blow out the problem that the user. But the not enough of this scheme existence, firstly most parts of complete machine all are located the handle the place ahead for the complete machine focus leans on the front, causes the problem that the user used hard. And secondly, the motor is stacked above the secondary separator, so that the height of the whole machine is increased, the whole machine is not coordinated, and the size is larger.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a vacuum cleaner for solving the problems of large volume and unreasonable air exhaust direction of the existing vacuum cleaner.

The above purpose is realized by the following technical scheme:

a vacuum cleaner, comprising: the air purifier comprises a shell, a power supply assembly, a motor, a first filtering assembly and a second filtering assembly, wherein the shell is provided with a first end far away from a user and a second end close to the user, the first end is provided with an air inlet pipe and an air outlet, and the second end is provided with a handle; the power supply assembly, the first filter assembly and the second filter assembly are all arranged in the shell, the motor is arranged between the second filter assembly and the exhaust port, the first filter assembly is close to the first end, and the second filter assembly and the power supply assembly are arranged on two sides of the handle; and a connecting channel is arranged in the machine shell and is communicated with the exhaust end of the first filtering component and the air inlet end of the second filtering component.

In one embodiment, the air inlet pipe center line and the first filter assembly center line are arranged at an included angle.

In one embodiment, the air inlet tube centerline and the first filter assembly centerline are perpendicular to each other.

In one embodiment, the first filter assembly centerline and the second filter assembly centerline are disposed at an included angle.

In one embodiment, the first filter assembly centerline and the second filter assembly centerline are perpendicular to each other.

In one embodiment, the included angle between the motor center line and the second filter assembly center line is not more than 90 degrees.

In one embodiment, the motor centerline coincides with the second filter assembly centerline.

In one embodiment, the casing includes a first cavity and a second cavity near the first end, and a third cavity and a fourth cavity near the second end, the first cavity is communicated with the air inlet pipe, the first cavity is communicated with the third cavity through the connecting passage, and the air outlet is communicated with the second cavity and the external environment; the first filtering component is arranged in the first cavity, the motor is arranged in the second cavity, the second filtering component is arranged in the third cavity, and the power supply component is arranged in the fourth cavity. In one embodiment, the exhaust direction of the exhaust port is opposite to the second end.

In one embodiment, the air purifier further comprises a contraction structure, the contraction structure is communicated with the air inlet of the motor and the air outlet of the second filter assembly, and the cross-sectional dimension of one end, close to the motor, of the contraction structure is smaller than the cross-sectional dimension of one end, close to the second filter assembly, of the contraction structure.

In one embodiment, the exhaust direction of the exhaust port is opposite to the second end.

In one embodiment, the first filter assembly comprises a first separator, the second filter assembly comprises a second separator, and the first separator and/or the second separator is a cyclone separator.

In one embodiment, the second filter assembly further comprises a pre-filter and/or a post-filter, the pre-filter is disposed at the air inlet end of the second filter assembly, and the post-filter is disposed at the air outlet end of the second filter assembly.

In one embodiment, the first filter assembly includes a removable first dirt cup, the first dirt cup centerline coinciding with the first filter assembly centerline; the second filter assembly includes a removable second dirt cup, the second dirt cup centerline coinciding with the second filter assembly centerline.

The utility model has the advantages that:

the utility model provides a dust collector, include: the air purifier comprises a shell, a motor, a power supply assembly, a first filtering assembly and a second filtering assembly, wherein the shell is provided with a first end far away from a user and a second end close to the user, the first end is provided with an air inlet pipe and an air outlet, and the second end is provided with a handle; power supply module, first filtering component and second filtering component all set up in the casing, and the motor sets up between second filtering component and gas vent, and first filtering component is close to first end, and second filtering component and power supply module set up in the handle both sides. Through optimizing the position of each subassembly in the middle of the dust catcher, under the prerequisite of guaranteeing high clean effect, structural configuration is compact, and the volume is less, and the complete machine focus does benefit to the operation. Meanwhile, the position of the exhaust port is adjusted, so that the exhaust direction faces away from a user, the user is not impacted by airflow generated by exhaust gas in the exhaust port when the dust collector is used, and the user experience is improved.

Drawings

Fig. 1 is a schematic view of an internal structure of a vacuum cleaner according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a vacuum cleaner according to an embodiment of the present invention;

FIG. 3 is a schematic view of the cleaner of FIG. 2 in another view;

FIG. 4 is an exploded view of the vacuum cleaner of FIG. 2;

fig. 5 is a schematic view of an internal structure of a vacuum cleaner according to an embodiment of the present invention, in which a double-headed arrow indicates a flow direction of an air flow.

Wherein:

a vacuum cleaner 100; a chassis 200; a first end 210; an intake pipe 211; an exhaust port 212; a second end 220; a handle 221; a first cavity 241; a second cavity 242; a third cavity 243; a fourth cavity 244; a connecting channel 245; a power supply component 300; a first filter assembly 400; a first separator 410; a first dust cup 420; a second filter assembly 500; a second separator 510; a second dust cup 520; a motor 600; a collapsible structure 610; the motor cover 620.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The utility model provides a dust catcher compares with prior art, through each subassembly in the middle of the rational arrangement dust catcher for the dust catcher complete machine distributes coordinately, and the size is compact, and is less based on the moment that grips some gravity and produce, grips laborsavingly, and the direction of airing exhaust user dorsad promotes and uses experience.

Specifically, as shown in fig. 1 to 5, the vacuum cleaner 100 of the present invention includes a housing 200, a motor 600, a power supply assembly 300, a first filter assembly 400 and a second filter assembly 500, wherein the housing 200 has a first end 210 away from a user and a second end 220 close to the user, the first end 210 is provided with an air inlet pipe 211 and an air outlet 212, and the second end 220 is provided with a handle 221; the power module 300, the first filter module 400 and the second filter module 500 are disposed in the housing 200, the motor 600 is disposed between the second filter module 500 and the exhaust opening 212, the first filter module 400 is disposed near the first end 210, and the second filter module 500 and the power module 300 are disposed on both sides of the handle 221. The discharge end of the first filter assembly 400 and the intake end of the second filter assembly 500 communicate through the connection passage 245.

The housing 200 serves as a base for mounting the outer member and other components of the entire cleaner 100, the power module 300 is used to supply power to the other components, and the first filter module 400 and the second filter module 500 are used to filter air and collect dust. The housing 200 has a first end 210 far away from the user and a second end 220 close to the user, and it should be noted that the first end 210 and the second end 220 are defined by the distance from the user, rather than the specific structure of the housing 200. In addition to the housing 200, the mass of each component of the vacuum cleaner 100 is mainly concentrated on the first filter assembly 400, the second filter assembly 500 and the power module 300, and the center of gravity of the vacuum cleaner 100 is mainly determined by the arrangement of the above three components. When the vacuum cleaner 100 is used, the user generally holds the handle 221 with the air inlet pipe 211 facing the bottom surface, and maintains the operation posture of the vacuum cleaner 100. When the center of gravity of the cleaner 100 deviates from the perpendicular between the handle 221 and the floor, a moment based on the position of the handle 221 is applied to the user by gravity, and the user has to overcome the moment to maintain the working posture of the cleaner 100, which is laborious. The utility model discloses with second filter assembly 500 and power module 300 design in the both sides of handle 221, set up near perpendicular line between handle 221 and the ground under dust catcher 100 uses the gesture with first filter assembly 400 to near perpendicular line between handle 221 and the ground under dust catcher 100 uses the gesture with the focus control of whole dust catcher 100, reduce or eliminate the moment that dust catcher 100 produced to the user, promote user's use and experience.

Meanwhile, after the first filter assembly 400 and the second filter assembly 500 are adjusted in position accordingly for the purpose of controlling the center of gravity, the position of the exhaust port 212 of the vacuum cleaner 100 is also adjusted accordingly. The utility model discloses set up gas vent 212 in the human first end 210 of keeping away from on dust catcher 100 for the user does not receive the air current that is produced by exhaust gas in the gas vent 212 and strikes when using dust catcher 100, promotes user's experience. It should be understood that the location of the exhaust port 212 and the arrangement of the various components have a correlation and should not be considered as two features in isolation from each other.

In some embodiments, as shown in FIG. 1, the centerline of the inlet pipe 211 is angled with respect to the centerline of the first filter assembly 400. The first filter assembly 400 may be a structure that performs filtering by direct forced filtration, such as a filter element, a filter screen, etc., or a structure that performs filtering by centrifugal separation, such as a cyclone separator, etc., or other filtering structures. The center line of the air inlet pipe 211 and the center line of the first filter assembly 400 form an included angle, so that when the air flows in from the air inlet pipe 211, the air cannot directly enter the first filter assembly 400, but flows along a certain flow path and finally enters the first filter assembly 400. For forced filtering structures such as a filter element, the airflow can not be concentrated in a certain area of the filter element, and the service efficiency of the filter element is improved; to centrifugal separation structures such as separator for the air current can get into along the tangential of separator direction of rotation when getting into the separator, avoids the air current to turn to once more before getting into the separator, can reduce the windage, promotes the filter effect. Further, the centerline of the inlet pipe 211 is at an acute angle, preferably 30-90, to the centerline of the first filter assembly 400.

In some embodiments, as shown in FIG. 1, the centerline of first filter assembly 400 is angled with respect to the centerline of second filter assembly 500. The first filter assembly 400 or the second filter assembly 500 may be a structure that performs filtering by direct forced filtration, such as a filter element, a filter screen, etc., or a structure that performs filtering by centrifugal separation, such as a cyclone separator, etc., or other filtering structures. Typically, the length of the first filter assembly 400 or the second filter assembly 500 in one direction is greater than the length in the other direction, for example, when the first filter assembly 400 or the second filter assembly 500 is generally slightly cylindrical, the length in the axial direction is greater than the length in the radial direction. In order to reduce the size of the whole dust collector 100, the central line of the first filtering component 400 and the central line of the second filtering component 500 are arranged at an included angle, meanwhile, the power supply component 300 is also arranged at an included angle with the first filtering component 400, the central line of the second filtering component 500 and the power supply component 300 are slightly U-shaped, the U-shaped notch is provided with the handle 221 and communicated with two sides of the U-shaped, the size of the whole dust collector 100 is reduced, the size development requirement of the handheld dust collector 100 is met, the carrying by a user is facilitated, the gravity center of the whole dust collector is more stable, and the appearance is more attractive. Further, the centerline of first filter assembly 400 and the centerline of second filter assembly 500 are at an acute angle, preferably 30-90.

In some embodiments, the motor 600 is used to generate an air flow to draw in outside air through the intake pipe 211 and to exhaust the air through the exhaust port 212. The motor 600 is disposed between the second filter assembly 500 and the air outlet 212, and an included angle is formed between a center line of the motor 600 and a center line of the second filter assembly 500, preferably, the motor 600 and the center line are disposed coaxially. The motor 600 is disposed between the second filter assembly 500 and the discharge port 212, that is, the motor 600 is disposed at a position closest to the discharge port 212 in the entire cleaner 100, and the air introduced into the motor 600 has been filtered twice by the first filter assembly 400 and the ground filter assembly, so that damage of dust to the motor 600 can be reduced.

In some embodiments, as shown in fig. 5, a first cavity 241, a second cavity 242, a third cavity 243 and a fourth cavity 244 are formed inside the housing 200, the first cavity 241 and the second cavity 242 are close to the first end 210, the third cavity 243 and the fourth cavity 244 are close to the second end 220, the first cavity 241 to the fourth cavity 244 are arranged in a rectangular shape according to a clockwise sequence, the first cavity 241 is communicated with the air inlet pipe 211, the first cavity 241 is communicated 245 with the third cavity 243 through a connecting passage, the air outlet 212 is communicated with the second cavity 242 and an external environment, and the fourth cavity 244 is sealed; first filter assembly 400 is disposed in first cavity 241, motor 600 is disposed in second cavity 242, second filter assembly 500 is disposed in third cavity 243, and power module 300 is disposed in fourth cavity 244. When the motor 600 works, negative pressure is generated, external air flow is sucked through the air inlet pipe 211, sequentially flows through the first cavity 241, the first filter assembly 400, the connecting channel 245, the third cavity 243, the second filter assembly 500, the motor 600 and the second cavity 242, and is finally discharged through the air outlet 212.

In some embodiments, a constriction 610 is further disposed between the motor 600 and the second filter assembly 500, the constriction 610 communicates between the air inlet of the motor 600 and the air outlet of the second filter assembly 500, and a cross-sectional dimension of an end of the constriction 610 close to the motor 600 is smaller than a cross-sectional dimension of an end of the constriction 610 close to the second filter assembly 500. The constriction 610 may be a separate part or may be formed by an extension of the housing on the housing 200, the motor 600, etc. Since the size of the air outlet of the second filter assembly 500 is generally larger than that of the air inlet of the motor 600, the contraction structure 610 is arranged between the air outlet and the air inlet, so that the air flow is gradually converged to the air inlet of the motor 600, and the increase of wind resistance caused by the sudden change of the area of the air flow channel is avoided.

In some embodiments, the exhaust fragrance of the exhaust opening 212 is disposed away from the second end 220, that is, the exhaust end of the exhaust opening 212 is disposed away from the user, and the exhaust direction is toward the front, which is behind the exhaust direction, so that the user is not affected and disturbed by the airflow impact when using the vacuum cleaner 100, thereby improving the user's experience.

In some of these embodiments, the first filter assembly 400 includes a first separator 410 and the second filter assembly 500 includes a second separator 510. First separator 410 and second separator 510 can be cyclone, compare in the filterable filter core of forcing, filter screen, cyclone can separate out dust and large granule debris, avoids it direct impact filtering component, promotes filter capacity and life.

In some embodiments, the second filter assembly 500 further comprises a pre-filter disposed at the air inlet end of the second filter assembly 500 and/or a post-filter disposed at the air outlet end of the second filter assembly 500. The pre-filter or post-filter may be a filter element, a screen, etc., and used in conjunction with the separator to further provide a filtering effect.

In some of these embodiments, the first filter assembly 400 includes a first dirt cup 420, the first dirt cup 420 centerline being coincident with the first filter assembly 400 centerline; the second filter assembly 500 includes a second dirt cup 520 with the centerline of the second dirt cup 520 being coincident with the centerline of the second filter assembly 500. The dust collecting cup is used as a dust collecting device, the dust collecting cup is detachably arranged in the middle of the filtering component, the air flow firstly enters the dust collecting cup when entering the filtering component and enters along the circumferential tangential direction of the dust collecting cup, the air flow is prevented from turning again before entering the separator, the wind resistance can be reduced, and the filtering effect is improved.

To sum up, the utility model provides a dust catcher 100 possesses following advantage at least:

1. by optimizing the positions of the components in the dust collector 100, on the premise of ensuring high cleaning effect, the structure layout is compact, the volume is small, and the gravity center of the whole machine is beneficial to operation.

2. By adjusting the position of the exhaust port 212, the exhaust direction faces away from the user, so that the user is not impacted by the airflow generated by the exhaust gas in the exhaust port 212 when using the vacuum cleaner 100, and the user experience is improved.

The first embodiment is as follows:

the vacuum cleaner 100 provided by the embodiment comprises a motor 600, a machine shell 200, a power supply assembly 300, a first filtering assembly 400 and a second filtering assembly 500, wherein the machine shell 200 is provided with a first end 210 far away from a user and a second end 220 close to the user, the first end 210 is provided with an air inlet pipe 211 and an air outlet 212, and the second end 220 is provided with a handle 221; power module 300, first filter assembly 400, and second filter assembly 500 are disposed within housing 200, with first filter assembly 400 being disposed proximate first end 210, and second filter assembly 500 and power module 300 being disposed on either side of handle 221. The motor 600 is disposed between the second filter assembly 500 and the exhaust port 212.

Wherein the center line of the inlet pipe 211 and the center line of the first filter assembly 400 are perpendicular to each other. The centerline of first filter assembly 400 and the centerline of second filter assembly 500 are perpendicular to each other. The motor 600 centerline is coaxial with the second filter assembly 500 centerline. Casing 200 is "U" shape except intake pipe 211, and whole first filter assembly 400, second filter assembly 500 all are cylindrically, and power supply module 300 is whole to be rectangle, and second filter assembly 500, first filter assembly 400 box power supply module 300 set gradually in the left side of "U" shape, following and the right for the focus of this part falls in casing 200 "U" shape breach department, keeps near the perpendicular line between handle 221 and the ground when the gesture of working promptly.

The handle 221 is disposed at an angle to the center line of the inlet pipe 211 rather than perpendicular to each other, and when the handle 221 is parallel to the floor, the inlet pipe 211 is inclined to the floor, so that the suction end of the cleaner 100 can have a larger movement range.

A contraction structure 610 is further arranged between the motor 600 and the second filter assembly 500, the contraction structure 610 is communicated with the air inlet of the motor 600 and the air outlet of the second filter assembly 500, and the cross-sectional dimension of one end, close to the motor 600, of the contraction structure 610 is smaller than that of one end, close to the second filter assembly 500, of the contraction structure 610. The motor 600 is coupled to the cabinet 200 through the motor cover 620. The exhaust port 212 is disposed opposite the second end 220.

The first filter assembly 400 comprises a first separator 410 and a removable first dirt cup 420, the first separator 410 being a screen-type separator. The second filter assembly 500 includes a second separator 510, a pre-filter and/or a post-filter, and a detachable second dust cup 520, the second separator 510 is a cyclone separator, the pre-filter and the post-filter are screen filters, the pre-filter is disposed at an air inlet end of the second filter assembly 500, and the post-filter is disposed at an air outlet end of the second filter assembly 500.

When the dust-dust separating device is used, negative pressure is generated when the motor 600 works, external air enters from the air inlet pipe 211 and enters along the circumferential tangential directions of the first separator 410 and the first dust cup 420, primary air-dust separation is performed in the first separator 410, separated dust or large-particle impurities enter the first dust cup 420, separated air flows to the second separator 510 and the second dust cup 520 and enters the second separator 510 along the circumferential tangential directions of the second separator 510 and the second dust cup 520 and performs centrifugal motion in the second separator 510 to perform secondary dust-gas separation. The secondarily separated air enters the motor 600 and is discharged through the discharge port 212.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (13)

1. A vacuum cleaner, comprising: the air purifier comprises a shell, a power supply assembly, a motor, a first filtering assembly and a second filtering assembly, wherein the shell is provided with a first end far away from a user and a second end close to the user, the first end is provided with an air inlet pipe and an air outlet, and the second end is provided with a handle; the power supply assembly, the first filter assembly and the second filter assembly are all arranged in the shell, the motor is arranged between the second filter assembly and the exhaust port, the first filter assembly is close to the first end, and the second filter assembly and the power supply assembly are arranged on two sides of the handle; and a connecting channel is arranged in the machine shell and is communicated with the exhaust end of the first filtering component and the air inlet end of the second filtering component.

2. The vacuum cleaner of claim 1, wherein the air inlet tube centerline and the first filter assembly centerline are disposed at an included angle.

3. The vacuum cleaner of claim 2, wherein the intake duct centerline and the first filter assembly centerline are perpendicular to each other.

4. The vacuum cleaner of claim 1, wherein the first filter assembly centerline and the second filter assembly centerline are angled.

5. The vacuum cleaner of claim 4, wherein the first filter assembly centerline and the second filter assembly centerline are perpendicular to each other.

6. The vacuum cleaner of claim 1, wherein the motor centerline is at an angle of no more than 90 ° to the second filter assembly centerline.

7. The vacuum cleaner of claim 6, wherein the motor centerline coincides with the second filter assembly centerline.

8. The vacuum cleaner of any one of claims 1-7, wherein the housing includes a first cavity proximate the first end, a second cavity, and a third cavity and a fourth cavity proximate the second end, the first cavity being in communication with the intake duct, the first cavity being in communication with the third cavity via the connecting passage, the exhaust opening being in communication with the second cavity and an external environment; the first filtering component is arranged in the first cavity, the motor is arranged in the second cavity, the second filtering component is arranged in the third cavity, and the power supply component is arranged in the fourth cavity.

9. The vacuum cleaner of any one of claims 1-7, wherein the exhaust outlet discharge direction is disposed away from the second end.

10. The vacuum cleaner of any one of claims 1-7, further comprising a constriction communicating between the air inlet of the motor and the air outlet of the second filter assembly, the constriction having a smaller cross-sectional dimension proximate the motor than an end of the constriction proximate the second filter assembly.

11. A vacuum cleaner according to any of claims 1 to 7, wherein the first filter assembly comprises a first separator and the second filter assembly comprises a second separator, the first and/or second separator being a cyclonic separator.

12. The vacuum cleaner of any one of claims 1-7, wherein the second filter assembly further comprises a pre-filter and/or a post-filter, the pre-filter being disposed at an air intake end of the second filter assembly and the post-filter being disposed at an air discharge end of the second filter assembly.

13. The vacuum cleaner of any one of claims 1-7, wherein the first filter assembly includes a removable first dirt cup, the first dirt cup centerline coincident with the first filter assembly centerline; the second filter assembly includes a removable second dirt cup, the second dirt cup centerline coinciding with the second filter assembly centerline.

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