CN108652517B

CN108652517B - Handheld dust catcher and prefilter subassembly

Info

Publication number: CN108652517B
Application number: CN201810790154.3A
Authority: CN
Inventors: 徐远福; 李冬
Original assignee: Jiangsu Midea Cleaning Appliances Co Ltd
Current assignee: Jiangsu Midea Cleaning Appliances Co Ltd
Priority date: 2018-07-18
Filing date: 2018-07-18
Publication date: 2021-08-27
Anticipated expiration: 2038-07-18
Also published as: CN108652517A

Abstract

The present disclosure discloses a hand-held cleaner and pre-filter assembly, the hand-held cleaner includes: an engine block assembly including a housing and a suction motor disposed within the housing, a precleaner assembly disposed in the housing and in fluid communication upstream of the suction motor, and an air handling assembly disposed in the housing and in fluid communication upstream of the precleaner assembly, wherein the precleaner assembly is removably mounted to the housing and removal of the precleaner assembly does not result in recombination of the air handling assembly and the housing. According to this disclosed handheld dust catcher, the dismouting of prefilter subassembly is swift, convenient, is convenient for clear up the prefilter subassembly.

Description

Handheld dust catcher and prefilter subassembly

Technical Field

The present disclosure relates to the field of cleaning devices, and more particularly, to a hand-held cleaner and a precleaner assembly.

Background

In the handheld dust collector in the related art, the disassembly and assembly of the prefilter in front of the suction motor are time-consuming and labor-consuming, and the handheld dust collector is inconvenient for a user to clean.

Disclosure of Invention

The present disclosure is directed to solving at least one of the technical problems of the prior art. Therefore, the handheld dust collector is provided, and the pre-filter assembly of the handheld dust collector is fast and convenient to disassemble and assemble, and is convenient to clean.

A hand-held cleaner according to a first aspect of the present disclosure includes: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell; a pre-filter assembly disposed in the housing and in fluid communication upstream of the suction motor; an air treatment assembly disposed in the cabinet and in fluid communication upstream of the precleaner assembly, wherein the precleaner assembly is removably mounted to the cabinet and wherein removal of the precleaner assembly does not result in recombination of the air treatment assembly and the cabinet.

According to this disclosed handheld dust catcher, the dismouting of prefilter subassembly is swift, convenient, is convenient for clear up the prefilter subassembly.

In some embodiments, the prefilter assembly comprises: a prefilter box which is a closed box except for an inlet and an outlet on the appearance surface; a filter assembly disposed within the prefilter cartridge and in fluid communication between the inlet and the outlet.

In some embodiments, the filter assembly includes a first-stage pre-filter and a second-stage pre-filter, the first-stage pre-filter being in fluid communication upstream of the second-stage pre-filter, the first-stage pre-filter having a larger filter diameter than the second-stage pre-filter.

In some embodiments, the first-stage pre-filter is sleeve-shaped and sleeved outside the second-stage pre-filter, so that all filter holes of the second-stage pre-filter are surrounded by the first-stage pre-filter.

In some embodiments, the first-stage pre-filter is a piece of filter cotton material and the second-stage pre-filter is a piece of non-woven fabric material.

In some embodiments, the prefilter assembly further comprises: and one end of the connecting pipe is positioned in the prefilter box, extends into the first-stage prefilter and is in fluid communication with the exhaust channel of the second-stage prefilter, and the other end of the connecting pipe penetrates out of the prefilter box from the outlet.

In some embodiments, the longitudinal axis of the pre-filter assembly extends in a transverse direction, the inlet is located at the bottom of the pre-filter box, and the outlet is located at one end of the pre-filter box in the transverse direction.

In some embodiments, the inlet is disposed at a lower elevation than the outlet, the first-stage pre-filter is disposed below the second-stage pre-filter, the pre-filter assembly further includes an inner tube disposed within the pre-filter box and nested within the first-stage pre-filter, an inlet end of the inner tube is in direct communication with the inlet, an outlet end of the inner tube is in direct communication with the first-stage pre-filter, the second-stage pre-filter is in direct communication with the outlet, and the inner tube defines an airflow flow direction opposite to the airflow flow direction of the outlet.

In some embodiments, the first-stage pre-filter and the second-stage pre-filter are removably coupled.

A precleaner assembly for a hand-held cleaner according to a second aspect of the present disclosure, comprising: a prefilter box which is a closed box except for an inlet and an outlet on the appearance surface; and a filter assembly disposed within said prefilter case and in fluid communication between said inlet and said outlet, said filter assembly comprising a first-stage prefilter and a second-stage prefilter, said first-stage prefilter being in fluid communication upstream of said second-stage prefilter, said first-stage prefilter having a filter diameter greater than that of said second-stage prefilter, said first-stage prefilter being sleeve-shaped and sleeved outside said second-stage prefilter such that all filter openings of said second-stage prefilter are surrounded by said first-stage prefilter.

According to the prefilter assembly for a handheld dust collector disclosed herein, cleaning is facilitated.

Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.

Drawings

FIG. 1 is a perspective view of a hand-held cleaner according to one embodiment of the present disclosure;

FIG. 2 is a front view of the hand-held cleaner shown in FIG. 1;

FIG. 3 is an exploded view of the hand-held cleaner shown in FIG. 1;

FIG. 4 is a cross-sectional view of the hand-held cleaner shown in FIG. 1;

FIG. 5 is a perspective view of a hand-held cleaner according to another embodiment of the present disclosure;

FIG. 6 is a front view of the hand-held cleaner shown in FIG. 5;

FIG. 7 is a rear elevational view of the hand-held cleaner illustrated in FIG. 5;

FIG. 8 is an exploded view of the hand-held cleaner shown in FIG. 5;

FIG. 9 is a cross-sectional view of the hand-held cleaner shown in FIG. 5;

FIG. 10 is a perspective view of the prefilter assembly shown in FIG. 8;

FIG. 11 is an exploded view of the prefilter assembly shown in FIG. 10;

FIG. 12 is a perspective view of a hand-held cleaner according to yet another embodiment of the present disclosure;

FIG. 13 is a front view of the hand-held cleaner shown in FIG. 12;

figure 14 is an exploded view of the hand-held cleaner shown in figure 12;

figure 15 is a cross-sectional view of the hand-held cleaner shown in figure 12;

figure 16 is another cross-sectional view of the hand-held cleaner shown in figure 12;

FIG. 17 is a cross-sectional view of the air treatment assembly shown in FIG. 15;

FIG. 18 is another cross-sectional view of the air treatment assembly shown in FIG. 15;

FIG. 19 is a front view of an air treatment assembly according to one embodiment of the present disclosure;

FIG. 20 is an exploded view of the air treatment assembly shown in FIG. 19;

FIG. 21 is a right side elevational view of the air treatment assembly illustrated in FIG. 19;

FIG. 22 is a top view of the air treatment assembly shown in FIG. 19;

FIG. 23 is a cross-sectional view of the air treatment assembly shown in FIG. 19;

FIG. 24 is a test state diagram of a hand-held cleaner according to one embodiment of the present disclosure;

FIG. 25 is an exploded view of the hand-held cleaner shown in FIG. 24;

FIG. 26 is a front view of a suction tube assembly according to one embodiment of the present disclosure;

FIG. 27 is a front view of a suction tube assembly according to another embodiment of the present disclosure;

FIG. 28 is a front view of a suction tube assembly according to yet another embodiment of the present disclosure;

FIG. 29 is a front view of a suction tube assembly according to yet another embodiment of the present disclosure;

FIG. 30 is a cleaning state view of the hand-held cleaner according to one embodiment of the present disclosure.

Reference numerals:

a handheld vacuum cleaner 100;

a machine body component 1; a housing 11;

a handle portion 111; a longitudinal axis 1110; a handle coating 1111;

a mounting portion 112; an upper mounting portion 1121; a lower mounting portion 1122;

a mounting cavity 1123; a gap 11230; mounting notches 1124;

a mouthpiece section 113; an intake air duct 1131; a longitudinal axis 1130; an elbow duct 1132;

a first cover 114; a second cap 115; an exhaust port 1151;

a suction motor 12; an axis 120; a first press seat 121; a second press seat 122;

a first duct 14; a longitudinal axis 140; a first seal ring 141;

a second duct 13; a longitudinal axis 130; a second seal ring 131;

an exhaust filter member 15;

a first latch mechanism 161; a second latch mechanism 162;

a third latch mechanism 163; the fourth latch mechanism 164;

a prefilter assembly 2; a longitudinal axis 20;

a pre-filter box 21; an inlet 2101; an outlet 2102; a case body 211; a box cover 212;

a filter assembly 22; a first-stage pre-filter 221;

a second-stage pre-filter 222; filter holes 2221; exhaust passage 2222;

a connecting pipe 23; an inner tube 24; an outer tube 25;

an air treatment assembly 3; a cyclone chamber 301; axis 3010;

a dust collection chamber 302; a first cavity section 3021; a second cavity 3022;

a dirty air inlet 303; a clean air outlet 304;

a dust drop port 305; a detection vent 306;

a dust cup 31; a cup body 311; spacers 312; the protruding portion 3121; a support 313;

a cup cover 32;

a cyclone 33; a cone 331; the front-stage portion 331 a; the middle stage 331 b;

a rear-stage portion 331 c; an air inlet 3310; a screen 332;

a dust full indicator 4; a longitudinal axis 40;

an air intake duct assembly 5; an elbow pipe 51; a suction inlet 510;

a first tube section 511; a second tube segment 512;

a transition piece 513; a hose 5131; a connecting member 5132;

a handle 52;

a switch push button 6; an electric control board 7; a plug-in terminal 8; flat tubes 9; the device 200 is tested.

Detailed Description

Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the present disclosure, and should not be construed as limiting the present disclosure.

The following disclosure provides many different embodiments, or examples, for implementing different features of the disclosure. To simplify the disclosure of the present disclosure, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Further, the present disclosure may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize the applicability of other processes and/or the use of other materials.

Referring now to fig. 1-30, a hand-held cleaner 100 according to an embodiment of the present disclosure is described.

As shown in fig. 1 to 4, the hand-held cleaner 100 may include: the air cleaner comprises an engine block assembly 1, a prefilter assembly 2 and an air handling assembly 3, wherein the engine block assembly 1 comprises a casing 11 and a suction motor 12 arranged in the casing 11, the prefilter assembly 2 is arranged in the casing 11 and is communicated with the upstream of the suction motor 12 in a fluid mode, and the air handling assembly 3 is arranged in the casing 11 and is communicated with the upstream of the prefilter assembly 2 in a fluid mode.

That is, the hand-held cleaner 100 at least comprises three parts, namely a machine body assembly 1, a pre-filter assembly 2 and an air treatment assembly 3, wherein the pre-filter assembly 2 and the air treatment assembly 3 are both mounted on the machine body assembly 1, and the pre-filter assembly 2 is in fluid communication between the air treatment assembly 3 and the suction motor 12, when the suction motor 12 is in operation, dirty air outside the hand-held cleaner 100 can sequentially flow through the air treatment assembly 3 and the pre-filter assembly 2 to be converted into clean air, and then flows through the suction motor 12 to be discharged outside the hand-held cleaner 100, so that dust collection and cleaning operations are realized.

However, the disclosure is not limited thereto, and in other embodiments of the disclosure, the hand-held cleaner 100 may not include the pre-filter assembly 2, and the air treatment assembly 3 is still located upstream of the suction motor 12, and when the suction motor 12 is operated, the dirty air outside the hand-held cleaner 100 may be converted into clean air by flowing through the air treatment assembly 3, and then discharged outside the hand-held cleaner 100 after flowing through the suction motor 12, so as to implement the dust collection and cleaning operations.

It should be noted that, in the case of mutual contradiction, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, and those combined embodiments or examples also belong to the disclosure of the present disclosure. In addition, the directions or positional relationships indicated by "up", "down", "front", "back", "left", "right", "lateral", and the like in the present specification are all directions or positional relationships based on the handheld cleaner 100 being placed on a horizontal plane, where "front" is a side of the handheld cleaner 100 away from the user, and "back" is a side of the handheld cleaner 100 close to the user, and "lateral" is a horizontal direction or a substantially horizontal direction, when the user performs a cleaning operation using the handheld cleaner 100.

In the following, a handheld vacuum cleaner 100 according to some embodiments of the present disclosure is described.

In some embodiments of the present disclosure, as shown in FIG. 4, the longitudinal axis 20 of the precleaner assembly 2 extends in a lateral direction, and the air treatment assembly 3 includes a cyclone chamber 301 with an axis 3010 extending in the lateral direction. From this, it all transversely puts to explain prefilter subassembly 2 and air treatment component 3 to on the one hand can effectively reduce handheld dust catcher 100's complete machine height, on the other hand can reduce handheld dust catcher 100's centre of gravity height, improve the stationarity that handheld dust catcher 100 placed on the horizontal plane, improve the phenomenon of empting that handheld dust catcher 100 placed on the horizontal plane, on the other hand, because handheld dust catcher 100's complete machine height and centre of gravity all can reduce, thereby make handheld dust catcher 100's handheld can be lighter, laborsaving. Here, it should be noted that the "longitudinal axis" described herein refers to a line extending along the length direction of the corresponding component.

In some embodiments of the present disclosure, as shown in fig. 2-4, the top surface of the air treatment assembly 3 may be lower than the bottom surface of the pre-filter assembly 2 when both the pre-filter assembly 2 and the air treatment assembly 3 are in a landscape orientation. That is, the precleaner assembly 2 is positioned directly or diagonally above the air treatment assembly 3. From this, utilize the equal horizontal characteristics of prefilter subassembly 2 and air treatment component 3, set up prefilter subassembly 2 and air treatment component 3 on the upper and lower direction, can effectively reduce the horizontal length of handheld dust catcher 100 complete machine to reduce handheld dust catcher 100's volume, can reduce the resistance arm moreover, make the user can be more laborsaving and lightly hold it and carry out cleaning operation. In addition, the hand-held cleaner 100 with the structural layout is simpler, so that the air flow path between the air treatment assembly 3 and the pre-filter assembly 2 can be shortened, and the suction energy consumption can be reduced.

In some embodiments of the present disclosure, as shown in FIGS. 8 and 14, the pre-filter assembly 2 is removably mounted to the cabinet 11, and the removal of the pre-filter assembly 2 does not result in the recombination of the air treatment assembly 3 and the cabinet 11. That is, the attachment position of the air treatment module 3 does not affect the attachment/detachment of the pre-filter module 2, and the housing 11 does not include the first cover 114 and other components that affect the attachment/detachment of the pre-filter module 2. Alternatively, a portion of the surface of the pre-filter assembly 2, through which the pre-filter assembly 2 may be attached to or detached from the housing 11, forms part of the external surface of the hand-held cleaner 100.

In this way, the pre-filter assembly 2 may be removed from the cabinet 11 or the pre-filter assembly 2 may be installed in the cabinet 11 without the need for a prior step of removing the air treatment assembly 3 from the cabinet 11 or a prior step of removing the cabinet 11 (e.g., without the step of opening the first cover 114 on the cabinet 11 shown in FIG. 3). From this, can improve prefilter subassembly 2's dismouting efficiency effectively, the user of being convenient for uses, promotes user experience.

In some embodiments of the present disclosure, as shown in fig. 3, 8 and 14, the air treatment assembly 3 is removably mounted to the housing 11, and removal of the air treatment assembly 3 does not result in reconfiguration of the precleaner assembly 2 when the hand-held cleaner 100 includes the precleaner assembly 2. That is, the attachment position of the precleaner assembly 2 does not affect the attachment/detachment of the air treatment assembly 3, nor does the cabinet 11 include components such as a cover that affect the attachment/detachment of the air treatment assembly 3. Alternatively, a portion of the surface of the air treatment assembly 3 forms part of the external surface of the hand-held cleaner 100 through which the air treatment assembly 3 may be attached to or detached from the housing 11.

Thus, the air treatment assembly 3 may be removed from the cabinet 11 or the air treatment assembly 3 may be installed in the cabinet 11 without the need for a step of previously removing the precleaner assembly 2 from the cabinet 11 or a step of previously removing the cabinet 11. From this, can improve air treatment component 3's dismouting efficiency effectively, the user of being convenient for uses, promotes user experience.

In some embodiments of the present disclosure, as shown in fig. 2 and 3, the cabinet 11 may include: the air treatment device comprises a handle part 111 and a mounting part 112, the mounting part 112 is positioned in front of the handle part 111, the mounting part 112 comprises an upper mounting part 1121 and a lower mounting part 1122, the upper mounting part 1121 is higher than the lower mounting part 1122, with reference to fig. 4, the suction motor 12 is arranged in the lower mounting part 1122, the pre-filter assembly 2 is detachably mounted on the upper mounting part 1121, and the air treatment assembly 3 can be detachably arranged between the front of the lower mounting part 1122 and the lower part of the upper mounting part 1121. From this, prefilter subassembly 2 can upwards be dismantled, and air treatment component 3 can dismantle downwards to can guarantee simply and effectively that prefilter subassembly 2 and air treatment component 3's dismouting does not influence each other, can go on alone respectively.

Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, the air treatment assembly 3 may also be disposed above the pre-filter assembly 2, and at this time, the air treatment assembly 3 may be disposed to be detached upward, and the pre-filter assembly 2 may be disposed to be detached downward, so that it may also be ensured that the detachment and installation of the pre-filter assembly 2 and the air treatment assembly 3 are not affected by each other, and may be performed independently.

In some embodiments of the present disclosure, and with reference to fig. 4, the prefilter assembly 2 is in fluid communication with the suction motor 12 through a first duct 14 provided within the cabinet 11. From this, need not to set up complicated cavity structures in casing 11, just can simply and guarantee effectively that the air current that flows out from prefilter subassembly 2 can flow to suction motor 12 to reduce the processing degree of difficulty of casing 11, guaranteed the reliability of prefilter subassembly 2 with suction motor 12 fluid intercommunication, and guaranteed that casing 11's outward appearance is pleasing to the eye.

For example, in the particular example shown in fig. 4, the lower end of the first duct 14 is disposed within the lower mounting portion 1122 above the suction motor 12 and in fluid communication with the suction motor 12, and the upper end of the first duct 14 extends into the upper mounting portion 1121 (shown in fig. 9 and 15) or penetrates into the upper mounting portion 1121 (shown in fig. 4) to be in fluid communication with the pre-filter assembly 2. Therefore, the first pipeline 14 is concise in layout, easy to assemble, disassemble and maintain and high in working reliability.

Further, referring to FIG. 4, longitudinal axis 140 of first conduit 14 may be parallel to longitudinal axis 1110 of handle portion 111 (see FIG. 4), thereby allowing for an elegant use of space, ease of design and layout, and an extended airflow path through first conduit 14 and reduced noise, e.g., longitudinal axis 1110 of handle portion 111 and longitudinal axis 140 of first conduit 14 may both extend obliquely from top to bottom in a front-to-back direction. Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, the longitudinal axis 140 of the first duct 14 may also extend in a vertical direction (refer to fig. 9 and 15), so that the installation may be convenient, the airflow path may be shortened, and the suction energy consumption may be reduced.

In some embodiments of the present disclosure, as shown in fig. 3 and 4, the air treatment assembly 3 is in fluid communication with the pre-filter assembly 2 via a second duct 13 disposed within the cabinet 11. From this, need not to set up complicated cavity structures in casing 11, just can simply and guarantee effectively that the air current that flows out from air treatment component 3 can flow to prefilter subassembly 2 to reduce casing 11's the processing degree of difficulty, guaranteed the reliability of air treatment component 3 with prefilter subassembly 2 fluid intercommunication, and guaranteed that casing 11's outward appearance is pleasing to the eye.

For example, in the particular example shown in FIG. 4, the lower end of the second duct 13 may be provided within the lower mounting 1122 and in fluid communication with the clean air outlet 304 of the cyclone chamber 301, with the upper end of the second duct 13 extending into the upper mounting 1121 (see FIGS. 9 and 15) or penetrating into the upper mounting 1121 (see FIG. 4) to be in fluid communication with the pre-filter assembly 2. Therefore, the second pipeline 13 is simple in layout, easy to disassemble, assemble and maintain and high in working reliability.

Further, referring to FIG. 4, longitudinal axis 130 of second conduit 13 may be parallel to longitudinal axis 1110 of handle portion 111, thereby allowing for a smart use of space, ease of design and layout, and an extended airflow path through second conduit 13 and reduced noise, e.g., longitudinal axis 1110 of handle portion 111 and longitudinal axis 130 of second conduit 13 may both extend obliquely from top to bottom in a front to back direction. Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, the longitudinal axis 130 of the second duct 13 may also extend in a vertical direction (refer to fig. 9 and 15), so that the installation may be convenient, the airflow path may be shortened, and the suction energy consumption may be reduced.

In some embodiments of the present disclosure, as shown in fig. 3 and 4, when the precleaner assembly 2 is in fluid communication with the suction motor 12 via the first duct 14, and the air treatment assembly 3 is in fluid communication with the precleaner assembly 2 via the second duct 13, the longitudinal axis 140 of the first duct 14 may be parallel to the longitudinal axis 130 of the second duct 13. Therefore, the layout compactness of the first pipeline 14 and the second pipeline 13 can be improved, the space utilization rate is improved, and the handheld dust collector 100 is smaller and is easy to hold.

In some embodiments of the present disclosure, as shown in fig. 16, the axis 120 of the suction motor 12 (i.e., the axis of rotation of the rotor of the suction motor 12) may intersect the longitudinal axis 1110 of the handle portion 111 at an acute angle α, as projected in a front-to-back direction. From this, can reduce the occupation space of suction motor 12 on vertical direction for handheld dust catcher 100's focus height reduces, thereby further reduces handheld dust catcher 100's focus, makes it place on the horizontal plane more steadily, and job stabilization nature is better, and the handheld operation of being convenient for more.

As shown in fig. 16, the axis 120 of the suction motor 12 intersects the longitudinal axis 1110 of the handle portion 111 at an acute angle α that satisfies: 20 DEG-alpha-60 DEG, i.e. the angle between the axis 120 of the suction motor 12 and the longitudinal axis 1110 of the handle portion 111 can be a minimum of 20 DEG, a maximum of 60 DEG, for example 20 DEG, 30 DEG, 40 DEG, 50 DEG, 60 DEG, etc. Accordingly, the occupied space of the suction motor 12 in the horizontal direction (in the left-right direction as shown in fig. 16) can be reduced, so that the handheld cleaner 100 is smaller in size and convenient for a user to handle.

Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, the axis 120 of the suction motor 12 may also coincide with the longitudinal axis 1110 of the handle portion 111, i.e., α is 0 °, as projected from the front to the rear. Therefore, the positioning and installation of the suction motor 12 are convenient, and the working reliability of the suction motor 12 is improved.

In some embodiments of the present disclosure, when the axis 120 of the suction motor 12 coincides with the longitudinal axis 1110 of the handle portion 111 when projected in the front-to-back direction, as shown in fig. 4, the axis 120 of the suction motor 12 may also extend obliquely in the front-to-back direction from top to bottom, e.g., the axis 120 of the suction motor 12 may also be parallel with the longitudinal axis 1110 of the handle portion 111. Therefore, the layout of the suction motor 12 can effectively utilize space, when the air processing assembly 3 is installed in front of the suction motor 12, the suction motor 12 with the layout can provide more installation space for the air processing assembly 3, so that the volume of the air processing assembly 3 can be extended backwards as much as possible on the premise that the front end of the air processing assembly 3 is fixed, the volume of the cyclone cavity 301 and/or the dust collection cavity 302 of the air processing assembly 3 can be improved, and the action effect of the air processing assembly 3 can be improved. Additionally, in other embodiments of the present disclosure, as shown in fig. 9, the axis 120 of the suction motor 12 may also be disposed completely vertically, thereby facilitating installation and layout.

Next, a prefilter assembly 2 according to an embodiment of the present disclosure is described.

In some embodiments of the present disclosure, as shown in fig. 8-11, the pre-filter assembly 2 may include: a pre-filter box 21 and a filter assembly 22, wherein the pre-filter box 21 is a closed box body except for an inlet 2101 and an outlet 2102 on the appearance surface, namely when the inlet 2101 and the outlet 2102 are not considered, the pre-filter box 21 is a closed box body, and the filter assembly 22 is arranged in the pre-filter box 21 and is communicated between the inlet 2101 and the outlet 2102 in a fluid mode.

Thus, because the filter assembly 22 is located within the closed precleaner housing 21, the precleaner assembly 2 can be a self-contained module, a portion of which can form the outer surface of the hand-held cleaner 100, such that the removal and installation of the precleaner assembly 2 does not result in the reconfiguration of the air treatment assembly 3 and the housing 11. Moreover, since the filter unit 22 is provided in the prefilter case 21, the filter unit 22 can be removed from the cabinet 11 at once in the process of removing the prefilter case 21 from the cabinet 11, and the filter unit 22 can be attached to the cabinet 11 at once in the process of attaching the prefilter case 21 to the cabinet 11, thereby effectively improving the efficiency of attaching and detaching the prefilter unit 2 as a whole and facilitating the user's operation.

In other words, when the prefilter unit 2 is attached to and detached from the housing unit 1, the user does not need to touch the filter unit 22 directly with hands, or the filter unit 22 is not exposed to the outside, so that secondary contamination can be avoided. More specifically, assuming that the pre-filter assembly 2 does not include the pre-filter box 21 but only includes the filter assembly 22, as shown in fig. 3, when the filter assembly 22 needs to be removed and cleaned, a user needs to open the first cover 114 on the housing 11 to expose the filter assembly 22, then directly take the filter assembly 22 out of the mounting cavity 1123 of the upper mounting portion 1121 by hand, and move the filter assembly 22 to a sink or a trash can for cleaning, so that the filter assembly 22 is directly exposed to the environment and moved, and therefore, during the movement of the filter assembly 22, dirt such as dust attached to the filter assembly 22 is difficult to fall into the environment, and secondary pollution is caused.

However, when the pre-filter assembly 2 includes the pre-filter case 21 accommodating the filter assembly 22, as shown in fig. 8-11, when the user needs to take out the filter assembly 22 for cleaning, the user only needs to take the pre-filter case 21 off the cabinet 11, then move the pre-filter case 21 to a sink or a trash can, and then open the pre-filter case 21 to take out the filter assembly 22 for cleaning, so that the problem of dust falling into the environment does not occur in the process of moving the pre-filter case 21 because the pre-filter case 21 is a closed case, and secondary pollution can be effectively avoided.

In addition, when the filter assembly 22 includes a plurality of pre-filters, such as the first-stage pre-filter 221 and the second-stage pre-filter 222, if the pre-filter assembly 2 does not include the pre-filter box 21, as illustrated in fig. 3 to 4, in the process of taking out the filter assembly 22, a plurality of taking-out actions, such as an action of taking out the first-stage pre-filter 221 alone, and an action of taking out the second-stage pre-filter 222 alone, are required, which are cumbersome and time-consuming. When the pre-filter assembly 2 includes the pre-filter box 21 for accommodating the filter assembly 22, as shown in fig. 8-11, the first-stage pre-filter 221 and the second-stage pre-filter 222 can be removed together only by removing the pre-filter box 21 once, if the filter assembly 22 needs to be removed, thereby simplifying the operation.

Similarly, if the pre-filter assembly 2 does not include the pre-filter box 21, as shown in fig. 3-4, during the installation of the filter assembly 22, a plurality of installation actions, such as the action of installing the first-stage pre-filter 221 individually and the action of installing the second-stage pre-filter 222 individually, are required, which is tedious and time-consuming, and the first-stage pre-filter 221 and the second-stage pre-filter 222 are easily installed reversely. When the pre-filter assembly 2 includes the pre-filter box 21 for accommodating the filter assembly 22, as shown in fig. 8-11, the filter assembly 22 is installed, and the first-stage pre-filter 221 and the second-stage pre-filter 222 can be installed together only by one installation of the pre-filter box 21, so that the operation is simplified, and the problem that the first-stage pre-filter 221 and the second-stage pre-filter 222 are installed reversely is avoided. In order to more clearly illustrate how time and labor can be saved, the following description will take the application scenarios of fig. 3 and 8 as an example.

In the example of fig. 3, if the filter assembly 22 needs to be cleaned, a user needs to perform three actions of opening the first cover 114, removing the first-stage pre-filter 221 and removing the second-stage pre-filter 222 with one hand, and the other hand needs to hold the body assembly 1 all the time during the three actions, which takes a long time and the other hand also takes a long time to hold the body assembly 1, so that the operation of the user is laborious. After the first-stage pre-filter 221 and the second-stage pre-filter 222 are cleaned, the user needs to hold the machine body assembly 1 with one hand, and the other hand performs three actions of mounting the second-stage pre-filter 222, mounting the first-stage pre-filter 221, and mounting the first cover 114, so that the operation is complicated, the user still needs to hold the machine body assembly 1 for a long time, and the operation is laborious.

In the example of fig. 8, in the process of detaching and installing the pre-filter assembly 2 from the housing 11, a user holds the main body assembly 1 with one hand, and only needs to detach the pre-filter box 21 with the other hand, the process is very short, the user saves labor, the subsequent user can put down the main body assembly 1, take the small pre-filter box 21 to a cleaning position, then detach the pre-filter box 21 easily, take out the filter assembly 22 for cleaning, after cleaning, mount the filter assembly 22 back to the pre-filter box 21, then mount the pre-filter box 21 back to the main body assembly 1, hold the main body assembly 1 with one hand, and only need to mount the pre-filter box 21 back to the main body assembly 1 with the other hand, which is very quick and labor-saving in operation.

In some embodiments of the present disclosure, as shown in fig. 11, the filter assembly 22 is detachably connected to the pre-filter box 21, for example, the pre-filter box 21 may include a box body 211 and a box cover 212, and after the pre-filter assembly 2 is integrally removed from the housing 11, the box cover 212 may be opened and the filter assembly 22 may be taken out from the box body 211, so as to facilitate cleaning, replacement, etc. of the filter assembly 22. Of course, the disclosure is not limited thereto, and the prefilter assembly 2 may also be non-removable as cost permits, in which case a user need only periodically replace the entire prefilter assembly 2 with a new one.

In some embodiments of the present disclosure, as shown in fig. 4, 9, and 15, the filter assembly 22 may include a first-stage pre-filter 221 and a second-stage pre-filter 222. Specifically, the first-stage pre-filter 221 is fluidly connected upstream of the second-stage pre-filter 222, and the filter diameter of the first-stage pre-filter 221 is larger than that of the second-stage pre-filter 222, that is, "the particle size of the minimum dust that the first-stage pre-filter 221 can filter out" is larger than that of the minimum dust that the second-stage pre-filter 222 can filter out ", in other words, the first-stage pre-filter 221 performs coarse filtering with respect to the second-stage pre-filter 222, and the second-stage pre-filter 222 performs fine filtering with respect to the first-stage pre-.

Thus, the air flow to the pre-filter assembly 2, for example, the air flow entering the pre-filter box 21 from the inlet 2101 of the pre-filter box 21, may be first coarse filtered by the first-stage pre-filter 221, then fine filtered by the second-stage pre-filter 222, and then flow out of the outlet 2102 of the pre-filter box 21. From this, can improve the filter effect of prefilter subassembly 2 effectively, improve the clean degree of the air current that flows to suction motor 12 for suction motor 12 can be long-term, stable and work effectively.

Preferably, the first-stage pre-filter 221 and the second-stage pre-filter 222 are removably connected, such as in the example shown in fig. 10-11, the second-stage pre-filter 222 may be drawn from the first-stage pre-filter 221. Therefore, a user can separate the first-stage pre-filter 221 and the second-stage pre-filter 222, and respectively perform corresponding processing on the first-stage pre-filter 221 and the second-stage pre-filter 222 according to needs, for example, a corresponding cleaning means is adopted or replaced according to the material and the pollution degree of the first-stage pre-filter 221, and a corresponding cleaning means is adopted or replaced according to the material and the pollution degree of the second-stage pre-filter 222, so that the maintenance effect can be improved, and the maintenance cost is reduced.

Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, for example, in the example shown in fig. 3, the prefilter assembly 2 may further include the filter assembly 22 without the prefilter case 21, in which case, the housing 11 may include the mounting cavity 1123 for accommodating the filter assembly 22 and the first cover 114 for opening and closing the mounting cavity 1123, and after the first cover 114 is opened, the filter assembly 22 may be taken out from the mounting cavity 1123, in which case, the removal and installation of the prefilter assembly 2 including only the filter assembly 22 may cause the reconfiguration of the housing 11, but may reduce the production cost.

Next, prefilter assemblies 2 according to three specific examples of the present disclosure are described.

Example 1

As shown in fig. 3 and 4, the pre-filter assembly 2 does not include the pre-filter box 21 but includes the filter assembly 22, and the filter assembly 22 includes the first-stage pre-filter 221 and the second-stage pre-filter 222, and the first-stage pre-filter 221 is located above the second-stage pre-filter 222. The upper mounting portion 1121 has a mounting cavity 1123, the top of the mounting cavity 1123 is open and is controlled to open and close by the first cover 114, the filter assembly 22 is disposed in the mounting cavity 1123, and a gap 11230 is provided between the upper first-stage pre-filter 221 and the bottom surface of the first cover 114, the lower mounting portion 1122 has a second duct 13 therein, an upper end of the second duct 13 penetrates into the mounting cavity 1123 and upwardly penetrates the second-stage pre-filter 222 and the first-stage pre-filter 221 in sequence, the lower mounting portion 1122 has a first duct 14 therein, an upper end of the first duct 14 penetrates into the mounting cavity 1123 and is provided at the bottom of the second-stage pre-filter 222, when the suction motor 12 is operated, the air treatment assembly 3 filters out clean air, the clean air can be discharged upwardly along the second duct 13 into the gap 11230 above the first-filter 221, and then the air flow discharged into the gap 30 and downwardly flows through the first-stage pre-filter 221 and the second-stage pre-filter 222 in sequence under the negative pressure in the first duct 14, and then flows to the suction motor 12 through the first duct 14.

Example two

As shown in fig. 8 to 11, the upper mounting portion 1121 has a mounting cavity 1123, the top of the mounting cavity 1123 is open, the pre-filter assembly 2 is detachably mounted in the mounting cavity 1123, and the top surface of the pre-filter assembly 2 constitutes a part of the external appearance surface of the hand cleaner 200 when the pre-filter assembly 2 is mounted in the mounting cavity 1123.

The pre-filter assembly 2 comprises a pre-filter box 21 and a filter assembly 22, the filter assembly 22 comprises a first-stage pre-filter 221 and a second-stage pre-filter 222, wherein the first-stage pre-filter 221 may be sleeve-shaped and sleeved outside the second-stage pre-filter 222, so that all filter holes 2221 of the second-stage pre-filter 222 are surrounded by the first-stage pre-filter 221. This can easily and effectively ensure that the air flow passing through the second-stage pre-filter 222 is all previously filtered by the first-stage pre-filter 221, thereby improving the filtering efficiency of the pre-filter assembly 2.

For example, in the example shown in fig. 11, the second-stage pre-filter 222 may have a substantially tubular shape, the filter holes 2221 of the second-stage pre-filter 222 are formed in the peripheral wall of the second-stage pre-filter 222, the first-stage pre-filter 221 is fitted around the peripheral wall of the second-stage pre-filter 222, and the air flow filtered by the first-stage pre-filter 221 is filtered by the filter holes 2221 in the peripheral wall of the second-stage pre-filter 222 and flows into the air discharge passage 2222 in the tube cavity of the second-stage pre-filter 222 (see fig. 9).

As shown in fig. 8-11, the prefilter assembly 2 may further include: and a connecting pipe 23, one end of the connecting pipe 23 is positioned in the pre-filter box 21 and extends into the first-stage pre-filter 221 and is in fluid communication with the air exhaust channel 2222 of the second-stage pre-filter 222, and the other end of the connecting pipe 23 passes out of the pre-filter box 21 through an outlet 2102. Therefore, the air flow filtered by the second-stage pre-filter 222 can be reliably discharged out of the pre-filter box 21 from the outlet 2102 through the connecting pipe 23, so that the filtering efficiency and the filtering reliability of the pre-filter assembly 2 are improved, and the problem that the air flow filtered by the second-stage pre-filter 222 is mixed with the air flow not filtered by the second-stage pre-filter 222 to reduce the filtering efficiency is solved. Alternatively, the cross-sectional area of the connecting pipe 23 is gradually increased in the exhaust direction, so that exhaust noise can be reduced. In addition, the connection of the prefilter assembly 2 to the first duct 14 is also facilitated by the provision of the connecting tube 23.

As shown in fig. 8-11, the longitudinal axis 20 of the pre-filter assembly 2 extends in a transverse direction, i.e., the first-stage pre-filter 221 may also extend in a transverse direction about the axis of the second-stage pre-filter 222, and the air vent passage 2222 of the second-stage pre-filter 222 may also extend in a transverse direction, in which case the inlet 2101 of the pre-filter box 21 may be located at the bottom of the pre-filter box 21, and the outlet 2102 of the pre-filter box 21 may be located at one transverse end of the pre-filter box 21, so that the air flow may enter the pre-filter box 21 from bottom to top through the inlet 2101, be filtered by the first-stage pre-filter 221, be filtered by the second-stage pre-filter 222, and then be discharged out of the pre-filter box 21 through the outlet 2102 in a transverse direction through the air vent passage 2222 of the second-filter 222. Therefore, the path of the air flow passing through the prefilter assembly 2 can be simplified, so that the filtering efficiency can be improved, the structure can be simplified, and the processing is convenient.

Alternatively, the first-stage pre-filter 221 is a piece of filter cotton material, the second-stage pre-filter 222 is a piece of non-woven fabric material, and the connecting pipe 23 is a plastic pipe. This can easily and effectively ensure that the first-stage pre-filter 221 has a larger filter diameter than the second-stage pre-filter 222. Moreover, it is ensured that the secondary pre-filter 222 has sufficient supporting strength to facilitate the nesting of the primary pre-filter 221, and that the primary pre-filter 221 has sufficient flexibility to tightly nest on the secondary pre-filter 222. Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, other materials may be used to process the first-stage pre-filter 221 and the second-stage pre-filter 222, for example, the second-stage pre-filter 222 may also be processed by using a material such as plastic.

Example three

As shown in fig. 14 to 15, the upper mounting portion 1121 has a mounting notch 1124, both sides and a top surface of the mounting notch 1124 are open, the pre-filter assembly 2 is detachably provided in the mounting notch 1124, and both side surfaces and the top surface of the pre-filter assembly 2 respectively constitute part of the external appearance surfaces of the hand cleaner 200 when the pre-filter assembly 2 is mounted at the mounting notch 1124.

As shown in fig. 14 to 15, the pre-filter assembly 2 includes a pre-filter box 21, a filter assembly 22, an inner tube 24 and an outer tube 25, the filter assembly 22 includes a first-stage pre-filter 221 and a second-stage pre-filter 222, the filter assembly 22 and the inner tube 24 are both located in the pre-filter box 21, the outer tube 25 is located outside the pre-filter box 21, an inlet 2101 is formed at the bottom of the pre-filter box 21, an outlet 2102 is formed at one lateral end of the pre-filter box 21, the outlet 2102 is higher than the inlet 2101, the first-stage pre-filter 221 is located below the second-stage pre-filter 222, the inner tube 24 is embedded in the first-stage pre-filter 221, the inlet end of the inner tube 24 is directly communicated with the inlet 2101 of the pre-filter box 21, the outlet end of the inner tube 24 is directly communicated with the first-filter 221, the second-stage pre-filter 222 is directly communicated with the outlet 2102, and the outlet 2102 of the pre-filter box 21 is communicated with the outer tube 25. Wherein the axis of the inner tube 24 extends in a transverse direction, and the inner tube 24 defines an airflow flow direction opposite to the airflow flow direction of the outlet 2102 of the prefilter box 21, and the outer tube 25 extends along a fold line from front to back and then from top to bottom.

Thus, the air flow may enter the inner tube 24 from the inlet 2101 of the pre-filter cassette 21, then flow into the first-stage pre-filter 221 in a first direction (back-to-right-to-front direction as shown in FIG. 14), the air flow filtered by the first-stage pre-filter 221 may enter the second-stage pre-filter 222 upwardly, then be filtered by the second-stage pre-filter 222 in a second direction opposite to the first direction (front-to-back direction as shown in FIG. 14), and finally be discharged into the outer tube 25 through the outlet 2102 of the pre-filter cassette 21. Thus, by providing the inner tube 24 in the prefilter assembly 2, the air flow path can be effectively extended, the filtering effect can be improved, and the prefilter assembly 2 can be connected to the second duct 13 conveniently, and further, by providing the outer tube 25, the prefilter assembly 2 can be connected to the first duct 14 conveniently.

Next, the air treatment assembly 3 according to an embodiment of the present disclosure is described.

As shown in fig. 19-23, the air treatment assembly 3 may include: the cyclone dust collector comprises a cyclone chamber 301, a dust collecting chamber 302 and a cyclone separator 33, wherein the cyclone separator 33 is arranged in the cyclone chamber 301, the dust collecting chamber 302 is communicated with the cyclone chamber 301 through an ash falling port 305, that is, the airflow entering the cyclone chamber 301 can be subjected to cyclone separation, and the dust separated by the cyclone in the cyclone chamber 301 can enter the dust collecting chamber 302 through the ash falling port 305. The cyclone 33 is understood in a broad sense, i.e. it may be one or more stages. It is understood that the structure and operation principle of the first-stage cyclone separator and the multi-stage cyclone separator are well known to those skilled in the art, and the description is given by taking the cyclone separator 33 as the first-stage cyclone separator only, and after reading the technical solutions herein, it is obvious that the cyclone separator 33 is an application example of the multi-stage cyclone separator.

As shown in fig. 23, when the air treatment assembly 3 is mounted to the body assembly 1, the axis 3010 of the cyclone chamber 301 extends in a lateral direction. Therefore, the whole height of the handheld dust collector 100 can be effectively reduced by transversely arranging the cyclone cavity 301, the gravity center height of the handheld dust collector 100 is reduced, the stability of the handheld dust collector 100 on a horizontal plane is improved, the dumping phenomenon of the handheld dust collector 100 on the horizontal plane is improved, and in addition, the whole height and the gravity center of the handheld dust collector 100 can be reduced, so that the handheld dust collector 100 can be more portable and labor-saving. Here, it should be noted that the axis 3010 of the cyclone chamber 301 described herein refers to the axis of the cyclone within the cyclone chamber 301.

In some embodiments of the present disclosure, as shown in fig. 19 and 20, the air processing assembly 3 includes a dirt cup 31 and a lid 32, the cyclone 301 and the dirt collection chamber 302 are defined by the dirt cup 31, and the cyclone 301 and the dirt collection chamber 302 are controlled to be opened and closed by the lid 32, that is, when the lid 32 is closed on the dirt cup 31, the cyclone 301 and the dirt collection chamber 302 can be closed by the lid 32, and when the lid 32 is opened from the dirt cup 31, the cyclone 301 and the dirt collection chamber 302 can be opened by the lid 32.

As shown in fig. 19 and 20, the cyclone separator 33 is provided on the cap 32 to move with the cap 32, and when the cap 32 closes the cyclone chamber 301 and the dirt collection chamber 302, the cyclone separator 33 moves into the cyclone chamber 301 (as shown in fig. 23), and when the cap 32 opens the cyclone chamber 301 and the dirt collection chamber 302, the cyclone separator 33 moves out of the cyclone chamber 301 (as shown in fig. 20).

Thus, the air treatment assembly 3 may be a self-contained module, a portion of which may form the external surface of the hand-held cleaner 100, such that removal of the air treatment assembly 3 does not result in reconfiguration of the precleaner assembly 2 and the housing 11. Moreover, because the cyclone separator 33 is arranged on the cup cover 32, when the cup cover 32 is opened to pour dust, the cyclone separator 33 can be taken out from the dust cup 31 together to clean the cyclone separator 33, and when the cup cover 32 is closed, the cyclone separator 33 can be put back into the dust cup 31 together, so that the self-dismounting efficiency of the air treatment assembly 3 is effectively improved, and the operation of a user is facilitated.

In some embodiments of the disclosure, as shown in fig. 23, the cyclone 33 may be integral with the lid 32 when the cyclone 33 is provided on the lid 32 to move with the lid 32. Therefore, the cyclone separator 33 is convenient to process, high in structural reliability and high in working stability. In other embodiments of the present disclosure, the cyclone 33 may be removably disposed on the lid 32 when the cyclone 33 is disposed on the lid 32 for movement with the lid 32. Therefore, after the cup cover 32 is opened, the cyclone separator 33 can be taken down from the cup cover 32 to respectively carry out operations such as cleaning on the cup cover 32 and the cyclone separator 33, and the maintenance is convenient.

In some embodiments of the present disclosure, as shown in fig. 23, the dirt cup 31 may include a cup 311 and a partition 312, the partition 312 is provided in the cup 311 and divides an inner cavity of the cup 311 into a cyclone chamber 301 and a dirt chamber 302, and the dust drop port 305 is formed on the partition 312. Therefore, the dust cup 31 has a simple structure and is convenient to process.

For example, in the particular example shown in FIG. 23, the partition 312 may be a transversely-oriented arcuate plate with the cyclone chamber 301 located above the arcuate plate and the dirt collection chamber 302 located below the arcuate plate. Therefore, the partition 312 has a simple shape, is easy to process, and is convenient to clean the cyclone chamber 301 and the dust collecting chamber 302. Alternatively, the partition 312 having an arc plate shape is integrated with the cup 311, so that assembly is not required, production efficiency is improved, and the partition effect of the partition 312 is reliable.

For example, in the specific example shown in fig. 17 and 18, the partition 312 may be a horizontal cylindrical member, the cyclone chamber 301 may be located inside the cylindrical partition 312, and the dust collection chamber 302 may be located outside the cylindrical partition 312, so that the cyclone chamber 301 may be simply and effectively ensured to be a cylindrical chamber, thereby ensuring a cyclone separation effect inside the cyclone chamber 301. Alternatively, the cylindrical partition 312 is fitted in the lid 32 and the cup 311, respectively, so that the cylindrical partition 312 can be taken out from the cup 311, thereby facilitating more thorough cleaning.

In some alternative embodiments of the present disclosure, as shown in fig. 20, the cup 311 may be a first cylinder with one axial side (e.g., the front side shown in fig. 20) being open and the other axial side (e.g., the rear side shown in fig. 20) being closed, and the cap 32 is used for opening and closing the axial open end (e.g., the rear end shown in fig. 20) of the first cylinder, so that the cup 311 has a simple structure and is easy to produce. In other alternative embodiments of the present disclosure, the cup 311 may further include a second cylinder (not shown) and an end cap (not shown), wherein both axial sides of the second cylinder are open, and the cap 32 is used for opening and closing one axial end (such as the rear end shown in fig. 20) of the second cylinder, and the end cap is used for closing the other axial end (such as the front end shown in fig. 20) of the second cylinder, so that the cup 311 may be further disassembled, thereby facilitating the more thorough cleaning of the cup 311.

In some embodiments of the present disclosure, as shown in FIG. 23, the dirt cup 31 may further include a support 313 disposed within the cyclone chamber 301, and the cyclonic separator 33 is in plug-in engagement with the support 313. Thereby, the positioning reliability of the cyclone 33 can be improved, thereby improving the operational reliability of the cyclone 33.

In some embodiments of the present disclosure, as shown in fig. 17 to 18, a front end side portion of the cyclone chamber 301 has a dirty air inlet 303 penetrating in a tangential direction, a rear end side portion of the cyclone chamber 301 has a dust drop port 305 penetrating from top to bottom, a rear end of the cyclone chamber 301 has a clean air outlet 304 penetrating in an axial direction from front to rear, the cyclone separator 33 includes a cone 331 and a filter screen 332 (see fig. 20), a front end of the cone 331 is closed and is radially opposite to the dirty air inlet 303, a rear end peripheral wall of the cone 331 is closed and is radially opposite to the dust drop port 305, a middle portion of the cone 331 is formed with an air inlet 3310, a rear end surface of the cone 331 is opened to communicate an inner cylinder chamber of the cone 331 with the clean air outlet 304, and the filter screen 332 is disposed at the air inlet 3310 (fig. 17 shows a state where the filter screen 332 is removed).

Of course, the disclosure is not limited thereto, and in other embodiments of the disclosure, the cyclone 33 may not include the filter screen 332, and when the cyclone 33 does not include the filter screen 332, the air inlet 3310 may be composed of a plurality of air inlet micro holes in addition to an integral opening having no blocking inside, which satisfies the values of i and f described later, and at this time, the area where the plurality of air inlet micro holes are located may satisfy the values of i and f described later. In addition, the connection manner of the cone 331 and the filter screen 332 is not limited, and for example, the cone 331 and the filter screen may be detachably assembled together, or may be injection molded as an integral structural member.

That is, the dirty air inlet 303, the air inlet 3310 of the cone 331, and the dust falling port 305 are sequentially spaced from each other along the front-to-rear direction, so that the problem that the airflow entering the cyclone chamber 301 from the dirty air inlet 303 directly enters the inner cylinder chamber of the cone 331 through the air inlet 3310 of the cone 331 without being separated by the cyclone outside the cone 331 and the problem that the airflow still enters the inner cavity of the cone 331 through the air inlet 3310 at the dust falling port 305 to catch the dust can be avoided, thereby improving the air treatment effect of the air treatment assembly 3.

In some embodiments of the present disclosure, as shown in fig. 23, the lengthwise directions of the cyclone chamber 301 and the dirt collection chamber 302 are both in the front-rear direction, and the longitudinal length of the cyclone chamber 301 (the length in the front-rear direction as shown in fig. 23) is greater than the longitudinal length of the dirt collection chamber 302 (the length in the front-rear direction as shown in fig. 23). Therefore, on one hand, the capacity of the cyclone cavity 301 can be ensured to be enough for cyclone separation, and on the other hand, the problems that the dust collection cavity 302 is too heavy and the gravity center of the whole machine is pulled down to cause inconvenience in holding and the like can be avoided, so that the dust collection cavity is convenient for a user to hold, production materials are saved, and the production cost is reduced.

In some embodiments of the present disclosure, as shown in fig. 20, the air treatment module 3 has a dirty air inlet 303, a clean air outlet 304 and a detection vent 306 on its outer surface, that is, when the air treatment module 3 is removed from the cabinet 11, the air treatment module 3 is a closed unit without considering the existence of the dirty air inlet 303, the clean air outlet 304 and the detection vent 306. Wherein, the dirty air inlet 303 and the clean air outlet 304 are both communicated with the cyclone chamber 301, and the detection vent 306 is communicated with the dust collection chamber 302 and is used for connecting the dust full indicator 4, as shown in fig. 15, the dust full indicator 4 may be disposed in the housing 11 and connected with the detection vent 306, but not limited thereto, as shown in fig. 23, the dust full indicator 4 may also be disposed in the dust collection chamber 302 and connected with the detection vent 306.

Therefore, the handheld dust collector 100 can comprise the dust full indicator 4 by arranging the detection vent 306, so that whether the handheld dust collector 100 is full of dust can be simply and effectively judged, and a user is prompted to clean the dust collection cavity 302 in time to ensure that the cleaning effect is reliable. It is to be noted here that the construction and the working principle of the dust full indicator 4 are well known to those skilled in the art, i.e. a device capable of giving an alarm signal after a predetermined volume of dust in the dust collecting chamber 302 has been reached, and will not be described in detail here.

In some embodiments of the present disclosure, as shown in fig. 23, the cyclone chamber 301 is located above the dust collection chamber 302, and the dust drop port 305 and the detection vent 306 are distributed spaced apart in the front-rear direction. Therefore, the dust falling from the dust falling port 305 can be prevented from falling to the detection vent 306 to affect the detection of the dust full indicator 4, thereby ensuring reliable detection results of the dust full indicator 4.

For example, in the specific example shown in fig. 23, the dust collection chamber 302 includes a first chamber portion 3021 located right below the cyclone chamber 301 and a second chamber portion 3022 located at the rear lower side of the cyclone chamber 301, and the detection vent 306 is formed on the rear end surface of the second chamber portion 3022. Therefore, the ash falling port 305 and the detection vent 306 can be simply and effectively ensured to be distributed at intervals in the front-back direction, and the working effect of the cyclone cavity 301 can be ensured not to be influenced.

In some alternative embodiments of the present disclosure, as shown in FIG. 23, dust full indicator 4 may be disposed within dust collection cavity 302, whereby by disposing dust full indicator 4 within dust collection cavity 302, later use maintenance of dust full indicator 4 is facilitated, ensuring reliable operation of dust full indicator 4, since air handling assembly 3 may be removed.

For example, in the particular example shown in fig. 23, the rear end face of the second chamber 3022 may extend obliquely from top to bottom in a front-to-rear direction, the dust full indicator 4 may be disposed within the second chamber 3022 with the longitudinal axis 40 of the dust full indicator 4 perpendicular to the rear end face of the second chamber 3022. Thus, by providing the rear end surface of the second chamber 3022 in this manner, more space for installing the dust fullness indicator 4 can be provided, and the space of the second chamber 3022 can be ensured to be small and compact. Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the dust full indicator 4 may also be disposed at the front portion within the dust collecting chamber 302, and in this case, the detection vent 306 may also be formed at a position such as a front end surface of the first chamber portion 3021, so that it is not necessary to machine the second chamber portion 3022.

In other alternative embodiments of the present disclosure, the dust full indicator 4 is provided within the housing 11, as shown in FIG. 15. Thus, the dust full indicator 4 is prevented from occupying the space in the dust collecting chamber 302, and the operational reliability of the dust full indicator 4 is improved. Optionally, the dust full indicator 4 is provided between the front of the suction motor 12 and the rear of the air handling assembly 3. From this, can draw close the distance between full indicator of dirt 4 and the air treatment component 3, make things convenient for full indicator of dirt 4 and the switch-on that detects vent 306 to conveniently detect the full condition of dirt, simplify the structure. Further, in the specific example shown in fig. 15, the longitudinal axis 40 of the dust full indicator 4 may extend obliquely from bottom to top in the front-to-rear direction, and the axis 120 of the suction motor 12 may extend in the vertical direction, so that the compactness of the layout may be improved.

Referring now to fig. 19-23, an air treatment assembly 3 according to one particular embodiment of the present disclosure is described.

As shown in fig. 19 to 23, the air treatment assembly 3 includes a dirt cup 31, a lid 32 and a cyclone separator 33, the dirt cup 31 includes a cup body 311 and an arc-shaped plate-shaped partition 312, the partition 312 divides an inner cavity of the dirt cup 31 into a cyclone chamber 301 located above the partition 312 and a dirt chamber 302 located below the partition 312, and the partition 312 has a dust falling opening 305. The dust cup 31 is provided with a dirty air inlet 303, the cup cover 32 is provided with a clean air outlet 304 and a detection vent 306, the cyclone separator 33 is arranged on the cup cover 32 and communicated with the clean air outlet 304, and the full dust indicator 4 is arranged on the cup cover 32 through the detection vent 306 and extends into the dust collection cavity 302. The cup cover 32 can be removed from the dirt cup 31 and the dirt-full indicator 4 can be removed from the cup cover 32 to facilitate more thorough cleaning of the air treatment assembly 3.

In some embodiments, the dust full indicator 4 may alert the user to clean the dust collection chamber 302 by, for example, displacement of a floating flag. When the handheld vacuum cleaner 100 does not have the dust fullness indicator 4, it is difficult for the user to accurately determine the dust fullness in the dust collecting cavity 302, which causes excessive dust suction into the dust collecting cavity 302 and affects the dust collection and use effects.

Referring to fig. 23, the axis 3010 of the cyclone chamber 301 extends horizontally in the front-rear direction, the dirty air inlet 303 is located at the front end of the dirt cup 31 and penetrates through the cyclone chamber 301 tangentially from top to bottom, the ash drop port 305 penetrates through the partition 312 in the up-down direction, the ash drop port 305 is located at the rear end of the cyclone chamber 301 and opens toward the cup cover 32, and the cyclone separator 33 may be composed of a filter screen 332 and a cone 331 made of plastic material. The cone 331 may include, connected from front to back: the front section 331a, the middle section 331b and the rear section 331c, the front end and the peripheral wall of the front section 331a are closed, the peripheral wall of the rear section 331c is closed, the rear end is opened to communicate the inner cavity of the cone 331 with the clean air outlet 304, the middle section 331b is provided with an air inlet 3310 which is through along the axial direction, and the filter screen 332 covers the air inlet 3310.

In operation, dirty air enters the cyclone chamber 301 through the dirty air inlet 303, clean air separated by the cyclone chamber 301 enters the inner cavity of the cone 331 through the filter screen 332 and the air inlet 3310, and is discharged from the clean air outlet 304, and dirt separated from the cyclone chamber 301 enters the dirt collection chamber 302 through the dirt outlet 305. Therefore, the air duct is simple in layout, small in occupied space, smooth in air flow circulation and high in ash falling reliability.

Wherein the diameter m of the cyclone chamber 301 satisfies: m is more than or equal to 30mm and less than or equal to 50mm, that is, the maximum diameter of any section of the cyclone cavity 301 is not more than 50mm, the minimum diameter is not less than 30mm, and the difference o between the radiuses of the cyclone cavity 301 and the cone 331 satisfies: o is more than or equal to 20mm and less than or equal to 40mm, namely, the difference o of the radius of any section of the cyclone cavity 301 is not more than 40mm at most and not less than 20mm at least. The length k1 of the ash falling opening 305 satisfies: 10mm ≦ k1 ≦ 30mm, that is, the length k1 of the ash falling opening 305 is not more than 30mm at maximum and not less than 10mm at minimum, and the width k2 of the ash falling opening 305 satisfies: 30mm < k2 < 50mm, that is to say, the width k2 of the ash falling opening 305 is not more than 50mm at most and not less than 30mm at least. With reference to FIG. 4, the distance between the axis 3010 of the cyclone chamber 301 and the top wall of the cyclone chamber 301 is X, the distance between the axis 3010 of the cyclone chamber 301 and the bottom wall of the dust collection chamber 302 is Y, and X/Y satisfies: X/Y is more than or equal to 0.3 and less than or equal to 0.6. Therefore, the dust-gas separation effect is better, the proportion of the whole machine is harmonious and beautiful, the gravity center is stable, and the use is light.

Next, the air suction pipe assembly 5 according to the embodiment of the present disclosure is described.

In some embodiments of the present disclosure, as shown in fig. 24 to 30, the handheld vacuum cleaner 100 may further include the suction pipe assembly 5, in which case the housing 11 may include a mounting portion 112, a suction nozzle portion 113 located in front of the mounting portion 112, and a handle portion 111 located in rear of the mounting portion 112, the suction motor 12 is provided in the mounting portion 112, the suction pipe assembly 5 is detachably mounted to the suction nozzle portion 113, and the suction pipe assembly 5 includes an elbow 51 and a handle 52 provided on the elbow 51. Therefore, the air suction pipe assembly 5 can be adopted to change the air suction angle so as to be used as a multi-angle auxiliary cleaning tool and a multi-angle auxiliary testing tool.

For example, in the example shown in fig. 24, when the handheld vacuum cleaner 100 is tested, the suction pipe assembly 5 may be mounted on the suction nozzle portion 113, and the suction pipe assembly 5 is connected to the testing device 200, so that the handheld vacuum cleaner 100 may be tested for different angles, that is, the handheld vacuum cleaner 100 is suitable for human use to realize a multi-angle performance test. However, in the related art, the handheld vacuum cleaner 100 adopts a horizontal test mode, that is, the suction direction and the handheld vacuum cleaner 100 are located on the same horizontal line, and the test function and the angle are single, so that the performance parameters and the dust suction state of the handheld vacuum cleaner 100 cannot be tested when a user uses the handheld vacuum cleaner at different angles.

Also for example, in the example shown in fig. 25, when the hand-held cleaner 100 is used for cleaning, the suction pipe assembly 5 may be mounted on the suction nozzle portion 113, and an attachment, such as the flat pipe 9 shown in fig. 25, may be mounted on the suction pipe assembly 5, so that multi-angle dust cleaning may be achieved. More specifically, referring to fig. 30, by installing the suction pipe assembly 5 on the suction opening portion 113, the included angle between the housing 11 and the surface to be cleaned can be changed, so as to prevent the housing 11 from colliding with the surface to be cleaned, and improve the cleaning range and the safety of the handheld cleaner 100.

In addition, with reference to fig. 24 and 25, the grip 52 is disposed on the suction pipe assembly 5, so that the elbow pipe 51 can be easily taken and the suction pipe assembly 5 and the housing 11 can be easily detached, and during the cleaning operation or the testing operation, one hand can grip the handle part 111 on the housing 11, and the other hand can grip the grip 52 on the elbow pipe 51, so that the suction opening 510 of the elbow pipe 51 can be aligned with the position to be cleaned or the testing device 200, and the operation is convenient.

Referring to fig. 30, for such a handheld vacuum cleaner 100 in which the air processing assembly 3 is located below the body assembly 1, when a space close to the ground is cleaned, for example, when the bottom of a sofa is cleaned, if the air suction pipe assembly 5 is not provided, as in the handheld vacuum cleaner 100 on the left side in fig. 30, when the bottom of the sofa is cleaned, the distance between the air processing assembly 3 and the ground is close, and the air processing assembly 3 is easy to collide with the ground, which is not beneficial to cleaning. And adopt the breathing pipe subassembly 5, like the handheld dust catcher 100 on the right side in fig. 30, because breathing pipe subassembly 5 has the angle of inflection, when breathing pipe subassembly 5 links to each other with flat pipe 9, flat pipe 9 can stretch into under the sofa very easily, and at this moment, air treatment component 3 still has very big distance from ground to can effectively solve above-mentioned technical problem of colliding with, do benefit to and clean.

According to the first air suction pipe assembly 5 of the present disclosure, as shown in fig. 25, the elbow 51 may include: a first pipe segment 511 and a second pipe segment 512, the first pipe segment 511 is connected with the suction nozzle portion 113, the second pipe segment 512 is arranged at the upstream of the first pipe segment 511, that is, after the air flow is sucked through the suction inlet 510 of the elbow 51, the air flow passes through the second pipe segment 512 and the first pipe segment 511 in sequence to enter the suction nozzle portion 113, wherein, when the elbow 51 is installed on the suction nozzle portion 113, the axis 5110 of the first pipe segment 511 is coincident with the axis 1130 of the suction nozzle portion 113, and the second pipe segment 512 extends obliquely upwards along the direction far away from the first pipe segment 511 (from the back to the front direction as shown in fig. 25). Therefore, with reference to fig. 30, in the operation process of the handheld vacuum cleaner 100, if the second pipe section 512 is made horizontal, the machine body assembly 1 and the air treatment assembly 3 can tilt back and up, so that the problems of collision between the machine body assembly 1 and the air treatment assembly 3 and the surface to be cleaned and the like can be effectively avoided.

In this embodiment, first tube section 511 and second tube section 512 are rigidly connected, and the angle ε between second tube section 512 and first tube section 511 is fixed, and may be, for example, 30 ° to 60 °. That is, the angle ε between second tube segment 512 and first tube segment 511 may be a minimum of 30 ° and a maximum of 60 °. For example, as shown in FIG. 26, ε may be 30; as also shown in FIG. 27, ε may be 45 °; as also shown in fig. 28, epsilon may be 60 deg.. Thereby, different practical requirements can be met, for example, the hand-held cleaner 100 can be selected to cooperate with suction tube assemblies 5 having different angles epsilon in the face of different test situations and cleaning situations.

In this embodiment, as shown in FIG. 26, handle 52 may be provided at the junction of first tube segment 511 and second tube segment 512. Thereby, the user can better control the orientation of the elbow 51 and can operate the air suction pipe assembly 5 with less effort. For example, handle 52 may be a curved handle, i.e., handle 52 may be curved, with one end of the curved handle connected to first tube segment 511 and the other end of the curved handle connected to second tube segment 512, thereby facilitating the manufacture of handle 52 and providing a more comfortable grip.

According to the intake pipe assembly 5 of the second embodiment of the present disclosure, as shown in fig. 29, the elbow 51 may include: a first tube segment 511, a second tube segment 512, and a transition connection 513, the first tube segment 511 being connected to the suction nozzle portion 113, the second tube segment 512 being disposed upstream of the first tube segment 511, the transition connection 513 being connected between the second tube segment 512 and the first tube segment 511, such that the angle between the second tube segment 512 and the first tube segment 511 is adjustable, i.e., the first tube segment 511 and the second tube segment 512 are no longer rigidly connected, and the angle between the first tube segment 511 and the second tube segment 512 is adjustable. Thus, by providing transition piece 513, the angle between first tube segment 511 and second tube segment 512 may be adjusted to meet different practical requirements. In this case, the handle 52 can be disposed on the second tube section 512, so as to avoid the influence of the handle 52 on the adjustment of the included angle between the first tube section 511 and the second tube section 512, on one hand, ensure that the included angle between the first tube section 511 and the second tube section 512 can be smoothly adjusted, and on the other hand, enable a user to hold the air suction tube assembly 5 more easily.

For example, transition piece 513 may have an included angle ε of second tube segment 512 and first tube segment 511 that satisfies: the included angle between the first pipe section 511 and the second pipe section 512 can be continuously changed between 0 and 90 degrees through the adjustment of the transition connecting piece 513, so as to change the included angle to any value between 0 and 90 degrees, thereby better meeting different practical requirements.

Specifically, as shown in fig. 29, transition piece 513 may include: a hose 5131 and a connector 5132, hose 5131 fluidly connecting first tube segment 511 to second tube segment 512, and connector 5132 hingedly connecting first tube segment 511 and second tube segment 512, respectively. Transition piece 513 is thus simple in construction and is capable of simply and efficiently securing first tube segment 511 and second tube segment 512 in fluid communication with one another.

Referring to fig. 1 to 4, a hand-held cleaner 100 according to a first embodiment of the present disclosure will be described.

As shown in fig. 1 to 4, the hand-held cleaner 100 includes: a body assembly 1, a pre-filter assembly 2, an air treatment assembly 3, etc. The front end of the air cleaner body assembly 1 is defined by the suction nozzle portion 113 to define an air inlet duct 1131, a longitudinal axis 1130 of the suction nozzle portion 113 (i.e., the longitudinal axis 1130 of the air inlet duct 1131) extends horizontally in the front-rear direction, an axis 3010 of the cyclone chamber 301 of the air treatment assembly 3 extends horizontally in the front-rear direction and is located below the longitudinal axis 1130 of the suction nozzle portion 113, the pre-filter assembly 2 is disposed above the air treatment assembly 3, and the longitudinal axis 20 of the pre-filter assembly 2 also extends horizontally in the front-rear direction.

The body assembly 1 includes a housing 11 and a suction motor 12, the suction motor 12 being located between the air treatment assembly 3 and the handle portion 111 of the housing 11, the axis 120 of the suction motor 12 and the longitudinal axis 1110 of the handle portion 111 both extending from top to bottom, from front to back. More specifically, in the example shown in fig. 4, the longitudinal axis 1130 of the air inlet duct 1131, the longitudinal axis 20 of the prefilter assembly 2, and the axis 3010 of the cyclone chamber 301 are parallel to each other and are all transverse, and the axis 120 of the suction motor 12 may be parallel to the longitudinal axis 1110 of the handle portion 111 and may all intersect the longitudinal axis 1130 of the air inlet duct 1131 at an included angle θ of 20 ° to 90 °, thereby facilitating operation.

As shown in fig. 3, the housing 11 includes a mounting portion 112, a nozzle portion 113 and a handle portion 111, the nozzle portion 113 is mounted on the mounting portion 112 by a first locking mechanism 161 so as to be detachably connected to the mounting portion 112, a bent duct 1132 extending downward is further provided at a rear end of the nozzle portion 113, an upper end of the bent duct 1132 is communicated with the intake duct 1131, and a lower end of the bent duct 1132 is communicated with the dirty air inlet 303 of the air treatment assembly 3. When the suction motor 12 is operating, dirty air is drawn in through the inlet air channel 1131, through the elbow channel 1132 into the air treatment assembly 3, then to the precleaner assembly 2, then to the suction motor 12, and finally out the exhaust port 1151 in the cabinet 11.

As shown in fig. 3 and 4, the gripped surface of handle portion 111 may be provided with a handle overmold 1111 to enhance the grip feel. In addition, a second cover 115 capable of being opened and closed can be arranged below the handle part 111, an air outlet 1151 is formed in the second cover 115, the opening and closing of the second cover 115 can be controlled by the fourth locking mechanism 164, an air exhaust filtering piece 15 is arranged in the second cover 115, and the air exhaust filtering piece 15 is in air flow communication between the suction motor 12 and the air outlet 1151, so that the cleanliness of air exhausted from the air outlet 1151 can be further improved on one hand, and outside air can be prevented from entering the casing 11 from the air outlet 1151 on the other hand.

As shown in fig. 3 and 4, the pre-filter assembly 2 is in air flow communication between the suction motor 12 and the air handling assembly 3, the cabinet 11 may have a mounting cavity 1123 therein, and the cabinet 11 may include a first cover 114 for opening and closing the mounting cavity 1123. the pre-filter assembly 2 is a filter assembly 22 disposed in the mounting cavity 1123, and when the first cover 114 on the cabinet 11 is opened, the pre-filter assembly 2 may be removed from the mounting cavity 1123 for cleaning. Wherein, the switch locking of the first cover 114 can be controlled by the second latch mechanism 162.

As shown in fig. 3 and 4, the filter assembly 22 includes a first-stage pre-filter 221 and a second-stage pre-filter 222, the first-stage pre-filter 221 is located above the second-stage pre-filter 222, a gap 11230 is provided between the first-stage pre-filter 221 and the first cover 114, the second duct 13 is provided in the mounting part 112, an upper end of the second duct 13 penetrates into the mounting cavity 1123 and upwardly passes through the second-stage pre-filter 222 and the first-stage pre-filter 221 in sequence, the first duct 14 is provided in the mounting part 112, an upper end of the first duct 14 penetrates into the mounting cavity 1123 and is located at a bottom of the second-stage pre-filter 222, when the suction motor 12 is operated, the air treatment assembly 3 filters out clean air, the clean air may be discharged upwardly along the first duct 14 into the gap 11230 above the first-filter 221, and then, under a negative pressure in the first duct 14, the air discharged above the first-stage pre-filter 221 and downwardly passes through the first-stage pre-filter 221 and the second-stage pre-filter 222 in sequence, and then flows to the suction motor 12 through the first duct 14.

The air treatment assembly 3 comprises: the dust cup 31, the cup cover 32 and the cyclone separator 33, the cyclone separator 33 and the cup cover 32 are an integral piece, and the cup cover 32 and the dust cup 31 can be separated to be cleaned or cleaned respectively. The air treatment assembly 3 is an independent component and can be used as a part of the appearance surface of the handheld dust collector 100 when being installed on the casing 11, so that the reorganization of the casing 11 can not be influenced in the process of assembling and disassembling the air treatment assembly 3 and the casing 11, that is, the casing 11 does not comprise a cover for covering the air treatment assembly 3, and the air treatment assembly 3 can be installed without the reorganization action of opening and closing the cover. However, the opening and closing operation of the third latch mechanism 163 for locking and unlocking the cabinet 11 and the air processing unit 3 is not limited to the range of the cabinet 11 being reconfigured.

During the operation of the suction motor 12, dirty air may enter the cyclone chamber 301 through the dirty air inlet 303 at the top of the front end of the dust cup 31 for cyclone separation, an airflow separated from dirt may enter the cone 331 through the filter screen 332, and then exit from the clean air outlet 304 on the cup cover 32 along the air channel in the cone 331, and dirt such as dust separated in the cyclone chamber 301 may enter the dust collecting chamber 302 through the dust falling port 305. In addition, in order to ensure operational reliability of the suction motor 12, a first pressure seat 121 and a second pressure seat 122 may be provided at both axial ends of the suction motor 12, respectively. In addition, the handheld vacuum cleaner 100 of the present embodiment may further include a switch push button 6, an electric control board 7, a plug terminal 8, and the like.

Therefore, according to the handheld vacuum cleaner 100 of the present embodiment, the air treatment assembly 3 can be removed and disassembled at one time, and the removed air treatment assembly 3 is a sealed unit as a whole except for the dirty air inlet 303 and the clean air outlet 304 on the appearance surface, so that the problem of internal dust leakage does not occur during the removal process of the air treatment assembly 3, and further, secondary pollution of dust is not easily caused. And because the dust cup 31 and the cup cover 32 in the air processing assembly 3 can be disassembled, the dust cup 31 and the cup cover 32 can be cleaned more thoroughly. In addition, the handheld vacuum cleaner 100 has a simple air duct, occupies a small space, is simple to operate, and operates efficiently.

In addition, in the first embodiment, the dirt cup 31 may include a cup body 311 and an arc-shaped plate-shaped partition 312, the cyclone chamber 301 is defined above the partition 312, the dust collection chamber 302 is defined below the partition 312, and the dust drop opening 305 is formed in the partition 312. Wherein, the distance between the axis of the cyclone chamber 301 and the top wall of the cyclone chamber 301 is X, the distance between the axis of the cyclone chamber 301 and the bottom wall of the dust collection chamber 302 is Y, and X/Y satisfies: X/Y is more than or equal to 0.3 and less than or equal to 0.6. In connection with FIGS. 19-23, the diameter m of the cyclone chamber 301 satisfies: m is more than or equal to 30mm and less than or equal to 50mm, and the difference o between the radiuses of the cyclone cavity 301 and the cone 331 meets the following requirements: o is more than or equal to 20mm and less than or equal to 40 mm. The length k1 of the ash falling opening 305 satisfies: k1 is more than or equal to 10mm and less than or equal to 30mm, and the width k2 of the ash falling port 305 meets the following requirements: k2 is more than or equal to 30mm and less than or equal to 50 mm.

Referring to fig. 5 to 11, a hand-held cleaner 100 according to a second embodiment of the present disclosure will be described.

The second embodiment has substantially the same structure as the first embodiment, and only the differences will be briefly described below.

In the second embodiment, the pre-filter assembly 2 comprises a pre-filter box 21 and a filter assembly 22 arranged in the pre-filter box 21, the pre-filter box 21 is integrally a sealed box body except for the inlet 2101 and the outlet 2102 on the appearance surface, the pre-filter assembly 2 forms a part of the appearance surface of the hand-held cleaner 100, the disassembly of the pre-filter assembly 2 does not cause the recombination of the machine shell 11, only the second locking mechanism 162 needs to be opened, the prefilter assembly 2 can be removed directly from the housing 11, whereby the removal of the prefilter assembly 2 is facilitated without opening and closing the first cover 114, and, during the removal of the prefilter assembly 2, since the first-stage pre-filter 221 and the second-stage pre-filter 222 are enclosed and taken out by the pre-filter box 21, therefore, the problem that a user directly grabs the first-stage pre-filter 221 and the second-stage pre-filter 222 to move does not exist, and secondary pollution is effectively avoided. It should be noted that the opening and closing operation of the second latch mechanism 162 does not fall within the scope of the rearrangement of the housing 11.

In the second embodiment, the first-stage pre-filter 221 of the pre-filter assembly 2 is sleeve-shaped, the second-stage pre-filter 222 is screen-shaped and is inserted into the first-stage pre-filter 221, the first seal ring 141 is provided at the connection between the inlet 2101 of the pre-filter box 21 and the first pipe 14, and the second seal ring 131 is provided at the connection between the outlet 2102 of the pre-filter box 21 and the second pipe 13. In addition, in the second embodiment, the axis 120 of the suction motor 12 may be vertically arranged, and in this case, the axis 120 of the suction motor 12 may intersect the longitudinal axis 1130 of the intake air duct 1131 at an angle of 90 °, so that the use is convenient.

Next, referring to fig. 12 to 18, a hand-held cleaner 100 according to a third embodiment of the present disclosure will be described.

The third embodiment has substantially the same structure as the second embodiment, and only the differences will be briefly described below.

In the third embodiment, the pre-filter assembly 2 includes a pre-filter box 21, a first-stage pre-filter 221 and a second-stage pre-filter 222 which are arranged in the pre-filter box 21, an inner tube 24 arranged in the pre-filter box 21, and an outer tube 25 arranged outside the pre-filter box 21, the second duct 13 is communicated with an inlet 2101 of the pre-filter box 21, the inlet 2101 of the pre-filter box 21 is communicated with an inlet of the inner tube 24, an outlet of the inner tube 24 is communicated with the first-stage pre-filter 221, the first-stage pre-filter 221 is communicated with the second-stage pre-filter 222, the second-filter 222 is communicated with an outlet 2102 of the pre-filter box 21, the outlet 2102 of the pre-filter box 21 is communicated with an inlet of the outer tube 25, and an outlet of the outer tube 25 is communicated with the first duct 14.

In the third embodiment, the dirt cup 31 in the air processing assembly 3 includes a cylindrical partition 312, the cyclone chamber 301 is defined in the cylindrical partition 312, the dust collecting chamber 302 is outside the cylindrical partition 312, the cylindrical partition 312 has a protruding portion 3121, a part of the protruding portion 3121 is located in the cyclone chamber 301 as the support 313 for supporting the cyclone separator 33, and another part of the protruding portion 3121 is located in the dust collecting chamber 302 and is in plug-in fit with the cup body 311 to support the cylindrical partition 312. Wherein the diameter m of the cyclone chamber 301 satisfies: m is more than or equal to 60mm and less than or equal to 80mm, and the difference o between the radiuses of the cyclone cavity 301 and the cone 331 meets the following requirements: o is more than or equal to 15mm and less than or equal to 25 mm.

In the third embodiment, as shown in fig. 16, the suction motor 12 can be tilted to the left or right, for example, the angle α between the axis 120 of the suction motor 12 and the longitudinal axis 1110 of the handle portion 111 can be 20-60 °, so that the center of gravity of the suction motor 12 can be stabilized during operation, noise can be reduced, and the grip feeling can be improved.

In the third embodiment, the dust cup 31 has a detection vent 306 on its outer surface in addition to the dirty air inlet 303 and the clean air outlet 304, and at this time, the hand-held vacuum cleaner 100 further includes a dust full indicator 4, and the dust full indicator 4 is communicated with the detection vent 306 to detect the dust full condition in the dust collection cavity 302. Specifically, in the third embodiment, the detection vent 306 is formed on the cup cover 32, the dust full indicator 4 is disposed in the housing 11 and located in front of the suction motor 12 to be close to the detection vent 306 on the cup cover 32, and the dust falling port 305 is also disposed close to the cup cover 32 but located in front of the detection vent 306, so that the handheld vacuum cleaner 100 of the third embodiment can have a dust full indication reminding function, so as to remind a user of timely cleaning the dust collecting cavity 302.

In the third embodiment, the cyclone 33 includes: cone 331 and screen 332 (screen 332 is not shown in fig. 17), cone 331 includes from front to back consecutive: the air inlet 3310 of the cone 331 extends axially from one end of the middle section 331b to the other end, and the air inlets 3310 of the cone 331 are uniformly distributed on the middle section 331b along the circumferential direction.

The front step portion 331a has a length (length in the front-rear direction shown in fig. 7) of j and a diameter of e, the middle step portion 331b has a length (length in the front-rear direction shown in fig. 17) of i and a diameter of d, and the rear step portion 331c has a length (length in the front-rear direction shown in fig. 17) of h and a diameter of c. Wherein h < i < j, i.e., the length of the cone 331 before the air inlet 3310 is greater than the length of the cone 331 after the air inlet 3310. Where c > d > e, that is, the diameter of the front section 331a at any cross section is smaller than that of the middle section 331b at any cross section, and the diameter of the middle section 331b at any cross section is smaller than that of the rear section 331c at any cross section. Thus, the cyclone separation effect can be improved.

The dimensional relationships of the air treatment assembly 3 may be as follows: the length i (length in the front-rear direction as shown in fig. 17) of the air inlet 3310 satisfies: i is more than or equal to 40mm and less than or equal to 50mm, and the width f of the air inlet 3310 meets the following requirements: f is more than or equal to 15mm and less than or equal to 20mm, and the length k1 of the ash falling port 305 meets the following requirements: k1 is more than or equal to 10mm and less than or equal to 30mm, and the width k2 of the ash falling port 305 meets the following requirements: k2 is greater than or equal to 30mm and less than or equal to 50mm, and the length g of the dirty air inlet 303 satisfies: g is more than or equal to 30mm and less than or equal to 40mm, and the width n of the dirty air inlet 303 satisfies: n is more than or equal to 20mm and less than or equal to 30 mm.

Here, it is understood that the "ports" described herein include the ash drop port 305, the dirty air inlet port 303, the air inlet port 3310, etc. which are flattened in a planar configuration with their length and width directions being perpendicular to each other. In addition, the characteristics disclosed by the attached drawings of the disclosure also belong to the alternative embodiments proposed by the disclosure.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

While embodiments of the present disclosure have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A hand-held cleaner, comprising:

the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell;

a pre-filter assembly disposed in the housing and in fluid communication upstream of the suction motor;

an air handling assembly disposed in the cabinet and in fluid communication upstream of the precleaner assembly,

wherein the pre-filter assembly is removably mounted to the housing without disassembly of the pre-filter assembly causing recombination of the air treatment assembly and the housing, the pre-filter assembly comprising: prefilter box and filter assembly, prefilter box is a closed box body except that it has import and export on its outward appearance face, filter assembly establishes prefilter box in and fluid intercommunication is in the import with between the export, prefilter assembly's longitudinal axis is along transversely extending, air treatment assembly includes the cyclone chamber of axis along transversely extending, the casing includes handle portion and installation department, the installation department is located the place ahead of handle portion, just the installation department includes installation department and lower mounting part, go up the installation department and be higher than the lower mounting part, the suction motor is established in the lower mounting part, prefilter assembly detachably install in the installation department, air treatment assembly detachably establish the place ahead of lower mounting part with between the below of upper mounting part, first pipeline and second pipeline have in the lower mounting part, the first duct communicates the precleaner assembly with the suction motor, and the second duct communicates the air handling assembly with the precleaner assembly.

2. The hand-held cleaner of claim 1, wherein the filter assembly comprises a first-stage pre-filter and a second-stage pre-filter, the first-stage pre-filter being in fluid communication upstream of the second-stage pre-filter, the first-stage pre-filter having a larger filter diameter than the second-stage pre-filter.

3. The hand-held cleaner of claim 2, wherein the primary pre-filter is sleeve-shaped and fits over the secondary pre-filter such that all of the filter openings of the secondary pre-filter are surrounded by the primary pre-filter.

4. The hand-held cleaner of claim 3, wherein the primary pre-filter is a piece of filter cotton material and the secondary pre-filter is a piece of non-woven fabric material.

5. The hand-held cleaner of claim 3, wherein the pre-filter assembly further comprises:

and one end of the connecting pipe is positioned in the prefilter box, extends into the first-stage prefilter and is in fluid communication with the exhaust channel of the second-stage prefilter, and the other end of the connecting pipe penetrates out of the prefilter box from the outlet.

6. The hand-held cleaner of claim 5, wherein the inlet is located at a bottom of the precleaner box and the outlet is located at an end of the precleaner box in a lateral direction.

7. The hand-held cleaner of claim 2, wherein the inlet is disposed at a lower elevation than the outlet, the primary pre-filter is positioned below the secondary pre-filter, the pre-filter assembly further comprising an inner tube disposed within the pre-filter housing and nested within the primary pre-filter, an inlet end of the inner tube is in direct communication with the inlet, an outlet end of the inner tube is in direct communication with the primary pre-filter, the secondary pre-filter is in direct communication with the outlet, and the inner tube defines an airflow path in a direction opposite to the airflow path of the outlet.

8. The hand-held cleaner of any one of claims 2-7, wherein the primary pre-filter and the secondary pre-filter are removably connected.