CN108652518B

CN108652518B - Hand-held dust collector

Info

Publication number: CN108652518B
Application number: CN201810790194.8A
Authority: CN
Inventors: 徐远福; 杨力; 殷雪冰; 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: 2023-05-23
Anticipated expiration: 2038-07-18
Also published as: CN108652518A

Abstract

The present disclosure discloses a hand-held cleaner, comprising: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell, the prefilter assembly is arranged on the machine shell and is in fluid communication with the upstream of the suction motor, the longitudinal axis of the prefilter assembly extends along the transverse direction, the air treatment assembly is arranged on the machine shell and is in fluid communication with the upstream of the prefilter assembly, and the air treatment assembly comprises a cyclone cavity of which the axis extends along the transverse direction. According to the handheld dust collector disclosed by the invention, the structure is compact, the stability is good, and the handheld dust collector is portable.

Description

Hand-held dust collector

Technical Field

The present disclosure relates to the field of cleaning devices, and in particular to a hand-held cleaner.

Background

The handheld dust collector in the related art has large volume, is laborious to hold, and is easy to topple when placed on a tabletop.

BRIEF SUMMARY OF THE PRESENT DISCLOSURE

The present disclosure is directed to solving at least one of the technical problems existing in the prior art. Therefore, the handheld dust collector is compact in structure, good in stability and portable in handheld.

A hand-held cleaner according to a first aspect of the present disclosure, comprising: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell; a prefilter assembly disposed in the housing and in fluid communication upstream of the suction motor, a longitudinal axis of the prefilter assembly extending in a lateral direction; an air handling assembly disposed in the housing and in fluid communication upstream of the prefilter assembly, the air handling assembly including a cyclone chamber having an axis extending transversely.

According to the handheld dust collector disclosed by the invention, the structure is compact, the stability is good, and the handheld dust collector is portable.

In some embodiments, the prefilter assembly is removably mounted to the housing, and disassembly and assembly of the prefilter assembly does not result in a reorganization of the air treatment assembly and the housing.

In some embodiments, the air treatment assembly is removably mounted to the housing, and disassembly and assembly of the air treatment assembly does not result in a reorganization of the prefilter assembly and the housing.

In some embodiments, the housing comprises: the air treatment device comprises a handle part and an installation part, wherein the installation part is positioned in front of the handle part and comprises an upper installation part and a lower installation part, the suction motor is arranged in the lower installation part, the prefilter assembly is detachably arranged on the upper installation part, and the air treatment assembly is detachably arranged between the front of the lower installation part and the lower side of the upper installation part.

In some embodiments, the prefilter assembly is in fluid communication with the suction motor through a first conduit, a lower end of the first conduit being disposed within the lower mounting portion and above the suction motor and in fluid communication with the suction motor, an upper end of the first conduit extending into fluid communication with the prefilter assembly.

In some embodiments, the longitudinal axis of the first conduit extends in a vertical direction or is parallel to the longitudinal axis of the handle portion.

In some embodiments, the air treatment assembly is in fluid communication with the pre-filter assembly via a second conduit, a lower end of the second conduit being disposed within the lower mounting portion and in fluid communication with the clean air outlet of the cyclone chamber, an upper end of the second conduit extending into fluid communication with the pre-filter assembly.

In some embodiments, the longitudinal axis of the second conduit extends in a vertical direction or is parallel to the longitudinal axis of the handle portion.

In some embodiments, the prefilter assembly is in fluid communication with the suction motor via a first conduit and the air treatment assembly is in fluid communication with the prefilter assembly via a second conduit, the longitudinal axis of the first conduit being parallel to the longitudinal axis of the second conduit.

In some embodiments, the prefilter assembly comprises: a prefilter cartridge having an inlet and an outlet on its exterior surface, and a filter assembly disposed within the prefilter cartridge and in fluid communication between the inlet and the outlet.

In some embodiments, the prefilter assembly comprises: a primary pre-filter and a secondary pre-filter, the primary pre-filter being in fluid communication upstream of the secondary pre-filter, the primary pre-filter having a larger filter diameter than the secondary pre-filter.

In some embodiments, the housing comprises: a handle portion and a mounting portion located in front of the handle portion, wherein, projected in a front-to-back direction, an axis of the suction motor intersects a longitudinal axis of the handle portion at an acute angle.

In some embodiments, the axis of the suction motor intersects the longitudinal axis of the handle portion at an acute angle α that satisfies: alpha is more than or equal to 20 degrees and less than or equal to 60 degrees.

In some embodiments, the housing comprises: the suction motor comprises a handle part and a mounting part, wherein the mounting part is positioned in front of the handle part, the mounting part is projected along the front-to-back direction, the axis of the suction motor is coincident with the longitudinal axis of the handle part, and the axis of the suction motor extends along the vertical direction or extends obliquely from top to bottom along the front-to-back direction.

A hand-held cleaner according to a second aspect of the present disclosure includes: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell; a prefilter assembly disposed in the housing and in fluid communication upstream of the suction motor; an air handling assembly disposed in the housing and in fluid communication upstream of the prefilter assembly, the air handling assembly including a cyclone chamber having an axis extending transversely, a top surface of the air handling assembly being lower than a bottom surface of the prefilter assembly.

A hand-held cleaner according to a third aspect of the present disclosure, comprising: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell; a prefilter assembly disposed in the housing and in fluid communication upstream of the suction motor; an air handling assembly disposed in the housing and in fluid communication upstream of the prefilter assembly, wherein the prefilter assembly is removably mounted to the housing and disassembly of the prefilter assembly does not result in recombination of the air handling assembly and the housing; the air treatment assembly is detachably mounted to the housing, and disassembly and assembly of the air treatment assembly does not result in recombination of the prefilter assembly and the housing.

According to the handheld dust collector disclosed by the invention, cleaning is convenient.

A hand-held cleaner according to a fourth aspect of the present disclosure includes: the machine body assembly comprises a machine shell and a suction motor arranged in the machine shell; a prefilter assembly disposed in the housing and in fluid communication upstream of the suction motor; an air handling assembly disposed within the housing and in fluid communication upstream of the prefilter assembly, wherein the prefilter assembly is in fluid communication with the suction motor through a first conduit disposed within the housing, and the air handling assembly is in fluid communication with the prefilter assembly through a second conduit disposed within the housing.

According to the handheld dust collector disclosed by the invention, the structure is simple, the processing is convenient, and the working reliability is high.

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;

figure 2 is a front view of the hand-held cleaner shown in figure 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;

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

figure 7 is a rear view of the hand-held cleaner shown in figure 5;

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

figure 9 is a cross-sectional view of the hand-held cleaner shown in figure 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;

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

FIG. 14 is an exploded view of the hand-held cleaner shown in FIG. 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 handling assembly according to one embodiment of the present disclosure;

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

FIG. 21 is a right side view of the air treatment assembly shown 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;

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

fig. 26 is a front view of an aspirator tube assembly according to one embodiment of the present disclosure;

fig. 27 is a front view of an aspirator tube assembly according to another embodiment of the present disclosure;

fig. 28 is a front view of an aspirator tube assembly according to yet another embodiment of the present disclosure;

fig. 29 is a front view of an aspirator tube assembly according to yet another embodiment of the present disclosure;

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

Reference numerals:

a hand-held cleaner 100;

a body assembly 1; a housing 11;

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

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

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

a suction part 113; an intake duct 1131; a longitudinal axis 1130; a bent pipe duct 1132;

a first cover 114; a second cover 115; an air outlet 1151;

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

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

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

an exhaust filter 15;

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

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

a prefilter assembly 2; a longitudinal axis 20;

a prefilter cartridge 21; an inlet 2101; an outlet 2102; a case 211; a lid 212;

a filter assembly 22; a primary prefilter 221;

a secondary prefilter 222; a filter hole 2221; an exhaust passage 2222;

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

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

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

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

an ash drop port 305; a detection vent 306;

A dust cup 31; a cup 311; a spacer 312; the projection 3121; a support 313;

a cup cover 32;

a cyclone separator 33; cone 331; a front stage 331a; a middle section 331b;

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

a dust-full indicator 4; a longitudinal axis 40;

an aspirator tube assembly 5; a bent pipe 51; suction port 510;

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

a transition piece 513; a hose 5131; a connection 5132;

a handle 52;

a switch push button 6; an electric control board 7; a plug terminal 8; a flat tube 9; test apparatus 200.

Detailed Description

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the disclosure. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present disclosure. Furthermore, 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 will recognize the applicability of other processes and/or the use of other materials.

Hereinafter, a hand-held cleaner 100 according to an embodiment of the present disclosure will be described with reference to fig. 1 to 30.

As shown in fig. 1-4, the hand-held cleaner 100 may include: the air treatment device comprises a body assembly 1, a prefilter assembly 2 and an air treatment assembly 3, wherein the body assembly 1 comprises a housing 11 and a suction motor 12 arranged in the housing 11, the prefilter assembly 2 is arranged in the housing 11 and is in fluid communication with the upstream of the suction motor 12, and the air treatment assembly 3 is arranged in the housing 11 and is in fluid communication with the upstream of the prefilter assembly 2.

That is, the hand-held cleaner 100 includes at least three parts of a 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 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 operated, dirty air outside the hand-held cleaner 100 can be sequentially converted into clean air through the air treatment assembly 3 and the pre-filter assembly 2, and then discharged outside the hand-held cleaner 100 after passing through the suction motor 12, thereby achieving dust collection and cleaning operations.

However, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the hand-held cleaner 100 may not include the prefilter assembly 2, and the air handling assembly 3 may still be located upstream of the suction motor 12, and when the suction motor 12 is operated, dirty air outside the hand-held cleaner 100 may be converted into clean air by passing through the air handling assembly 3 and then discharged outside the hand-held cleaner 100 after passing through the suction motor 12, thereby performing a dust sucking and cleaning operation.

It is noted that, without contradiction, those skilled in the art can combine and combine the features of the different embodiments or examples described in the specification and the different embodiments or examples, and these combined embodiments or examples also belong to the disclosure. In addition, the directions or positional relationships indicated by "up", "down", "front", "rear", "left", "right", "lateral", etc. are all directions or positional relationships based on the hand-held cleaner 100 being placed on a horizontal plane, where "front" is a side of the hand-held cleaner 100 away from the user when the user performs cleaning operation using the hand-held cleaner 100, and "rear" is a side of the hand-held cleaner 100 close to the user, and "lateral" is a horizontal direction or a substantially horizontal direction.

Next, a hand-held 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 prefilter assembly 2 extends in a transverse direction, and the air treatment assembly 3 includes a cyclone chamber 301 having an axis 3010 extending in a transverse direction. Therefore, the pre-filter assembly 2 and the air treatment assembly 3 are both horizontally arranged, so that the overall height of the handheld dust collector 100 can be effectively reduced, the gravity center height of the handheld dust collector 100 can be reduced, the stability of the handheld dust collector 100 on a horizontal plane is improved, the toppling phenomenon of the handheld dust collector 100 on the horizontal plane is improved, and on the other hand, the overall 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 "longitudinal axis" as used herein refers to a line extending in the length direction of the corresponding member.

In some embodiments of the present disclosure, as shown in fig. 2-4, when both the pre-filter assembly 2 and the air treatment assembly 3 are positioned horizontally, the top surface of the air treatment assembly 3 may be lower than the bottom surface of the pre-filter assembly 2. That is, the prefilter assembly 2 is located directly above or diagonally above the air treatment assembly 3. Therefore, by utilizing the characteristic that the prefilter assembly 2 and the air treatment assembly 3 are transversely arranged, the prefilter assembly 2 and the air treatment assembly 3 are arranged in the vertical direction, so that the transverse length of the whole handheld dust collector 100 can be effectively reduced, the volume of the handheld dust collector 100 is reduced, the resistance arm can be reduced, and a user can hold the handheld dust collector more labor-saving and light to carry out cleaning operation. In addition, the hand-held cleaner 100 with the structural arrangement is more concise, so that the airflow path between the air treatment assembly 3 and the prefilter assembly 2 can be shortened, and the pumping energy consumption can be reduced.

In some embodiments of the present disclosure, as shown in fig. 8 and 14, the prefilter assembly 2 is removably mounted to the housing 11, and the removal of the prefilter assembly 2 does not result in a reorganization of the air treatment assembly 3 and the housing 11. That is, the mounting position of the air treatment unit 3 does not affect the attachment/detachment of the prefilter unit 2, and the housing 11 does not include the first cover 114 or the like that affects the attachment/detachment of the prefilter unit 2. Alternatively, a portion of the surface of the prefilter assembly 2 forms part of the exterior surface of the hand-held cleaner 100, and the prefilter assembly 2 may be attached to the housing 11 or detached from the housing 11 in an area defined by the portion of the surface.

In this way, the prefilter assembly 2 can be detached from the housing 11 or the prefilter assembly 2 can be mounted to the housing 11 without the need for a prior step of removing the air treatment assembly 3 from the housing 11 or the need for a prior step of removing the housing 11 (e.g., without the need for the step of opening the first cover 114 on the housing 11 as shown in fig. 3). Therefore, the disassembly and assembly efficiency of the prefilter assembly 2 can be effectively improved, the use of a user is facilitated, and the user experience is improved.

In some embodiments of the present disclosure, as shown in fig. 3, 8 and 14, the air treatment assembly 3 is detachably mounted to the housing 11, and the removal of the air treatment assembly 3 does not cause the reconstitution of the prefilter assembly 2 when the hand cleaner 100 includes the prefilter assembly 2. That is, the mounting position of the prefilter assembly 2 does not affect the removal of the air treatment assembly 3, and the housing 11 does not include a cover or the like that affects the removal of the air treatment assembly 3. Alternatively, a portion of the surface of the air treatment assembly 3 forms part of the exterior surface of the hand-held cleaner 100, and the air treatment assembly 3 may be attached to the housing 11 or detached from the housing 11 in an area defined by the portion of the surface.

Thus, the air treatment assembly 3 can be removed from the housing 11 or the air treatment assembly 3 can be mounted to the housing 11 without the need for a prior step of removing the prefilter assembly 2 from the housing 11 or the housing 11. Therefore, the disassembly and assembly efficiency of the air treatment assembly 3 can be effectively improved, the use of a user is facilitated, and the user experience is improved.

In some embodiments of the present disclosure, as shown in fig. 2 and 3, the housing 11 may include: the handle portion 111 and the mounting portion 112, the mounting portion 112 is located in front of the handle portion 111, and the mounting portion 112 includes an upper mounting portion 1121 and a lower mounting portion 1122, the upper mounting portion 1121 is higher than the lower mounting portion 1122, and in combination with fig. 4, the suction motor 12 is provided in the lower mounting portion 1122, the prefilter unit 2 is detachably mounted to the upper mounting portion 1121, and the air treatment unit 3 may be detachably provided between the front of the lower mounting portion 1122 and the lower side of the upper mounting portion 1121. Therefore, the prefilter assembly 2 can be disassembled upwards, and the air treatment assembly 3 can be disassembled downwards, so that the disassembly and assembly of the prefilter assembly 2 and the air treatment assembly 3 can be simply and effectively ensured not to be influenced by each other, and can be independently performed.

Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the air treatment assembly 3 may be disposed above the prefilter assembly 2, and at this time, the air treatment assembly 3 may be disposed to be detached upward, and the prefilter assembly 2 may be disposed to be detached downward, so that it may be ensured that the detachment of the prefilter assembly 2 and the air treatment assembly 3 does not affect each other, and may be performed separately.

In some embodiments of the present disclosure, in conjunction with fig. 4, the prefilter assembly 2 is in fluid communication with the suction motor 12 through a first conduit 14 provided within the housing 11. Therefore, the air flow flowing out of the prefilter assembly 2 can flow to the suction motor 12 simply and effectively without arranging a complex cavity structure in the housing 11, so that the processing difficulty of the housing 11 is reduced, the reliability of the fluid communication between the prefilter assembly 2 and the suction motor 12 is ensured, and the attractive appearance of the housing 11 is ensured.

For example, in the specific example shown in fig. 4, the lower end of the first conduit 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 conduit 14 extends to the upper mounting portion 1121 (as shown in fig. 9 and 15) or penetrates into the upper mounting portion 1121 (as shown in fig. 4) to be in fluid communication with the prefilter assembly 2. Thus, the first pipe 14 is simple in layout, easy to assemble and disassemble, and high in operational reliability.

Further, referring to fig. 4, the longitudinal axis 130 of the first duct 14 may be parallel to the longitudinal axis 1110 of the handle portion 111 (referring to fig. 4), thereby making it possible to use space neatly, facilitate design and layout, and to lengthen the airflow path of the first duct 14 to reduce noise, for example, the longitudinal axis 1110 of the handle portion 111 and the longitudinal axis 140 of the first duct 14 may each extend obliquely from top to bottom in a front-to-rear direction. Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the longitudinal axis 140 of the first duct 14 may also extend in a vertical direction (refer to fig. 9 and 15), whereby installation may be facilitated, and an airflow flow path may be shortened, reducing pumping energy consumption.

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 prefilter assembly 2 through a second conduit 13 provided within the housing 11. From this, need not to set up complicated cavity structure in casing 11, just can simply and effectively guarantee that the air current that flows out from air treatment subassembly 3 can flow to prefilter subassembly 2 to the processing degree of difficulty of casing 11 has been reduced, the reliability of air treatment subassembly 3 and prefilter subassembly 2 fluid communication has been guaranteed, and the outward appearance of casing 11 has been guaranteed to pleasing to the eye.

For example, in the specific example shown in fig. 4, a lower end of the second duct 13 may be provided within the lower mounting portion 1122 and in fluid communication with the clean air outlet 304 of the cyclone chamber 301, and an upper end of the second duct 13 extends to the upper mounting portion 1121 (see fig. 9 and 15) or penetrates into the upper mounting portion 1121 (see fig. 4) to be in fluid communication with the prefilter assembly 2. Thus, the second pipe 13 is simple in layout, easy to assemble and disassemble, and high in operational reliability.

Further, referring to fig. 4, the longitudinal axis 130 of the second duct 13 may be parallel to the longitudinal axis 1110 of the handle portion 111, thereby making it possible to use space neatly, facilitate design and layout, and to lengthen the airflow path of the second duct 13 to reduce noise, for example, the longitudinal axis 1110 of the handle portion 111 and the longitudinal axis 130 of the second duct 13 may each extend obliquely from top to bottom in a front-to-rear direction. Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the longitudinal axis 130 of the second duct 13 may also extend in a vertical direction (refer to fig. 9 and 15), whereby installation may be facilitated, and an airflow flow path may be shortened, reducing pumping energy consumption.

In some embodiments of the present disclosure, as shown in fig. 3 and 4, when the pre-filter assembly 2 is in fluid communication with the suction motor 12 through the first conduit 14 and the air treatment assembly 3 is in fluid communication with the pre-filter assembly 2 through the second conduit 13, the longitudinal axis 140 of the first conduit 14 may be parallel to the longitudinal axis 130 of the second conduit 13. Thereby, the compactness of the layout of the first duct 14 and the second duct 13 can be improved, and the space utilization can be improved, so that the hand-held cleaner 100 is more compact and easy to handle.

In some embodiments of the present disclosure, as shown in fig. 16, the axis 120 of the suction motor 12 (i.e., the rotational axis 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. Therefore, the occupation space of the suction motor 12 in the vertical direction can be reduced, so that the gravity center height of the handheld dust collector 100 is reduced, the gravity center of the handheld dust collector 100 is further reduced, the handheld dust collector 100 is placed on a horizontal plane more stably, the working stability is better, and the handheld operation is more convenient.

As shown in fig. 16, the acute angle α at which the axis 120 of the suction motor 12 intersects the longitudinal axis 1110 of the handle portion 111 may be: 20.ltoreq.α.ltoreq.60°, that is, the angle between the axis 120 of the suction motor 12 and the longitudinal axis 1110 of the handle portion 111 may be at least 20 °, and at most 60 °, for example, may be 20 °, 30 °, 40 °, 50 °, 60 °, and so on. Thereby, the occupation space of the suction motor 12 in the horizontal direction (the left-right direction as viewed in fig. 16) can be reduced, so that the handheld cleaner 100 is smaller in size and convenient for the user to hold.

Of course, the present disclosure is not limited thereto, and in other embodiments of the present 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=0°, as projected in a front-to-rear direction. Thereby, the positioning and the installation of the suction motor 12 are facilitated, and the operation reliability of the suction motor 12 is improved.

In some embodiments of the present disclosure, when projected in a front-to-back direction, the axis 120 of the suction motor 12 coincides with the longitudinal axis 1110 of the handle portion 111, as shown in fig. 4, the axis 120 of the suction motor 12 may also extend obliquely from top to bottom in a front-to-back direction, e.g., the axis 120 of the suction motor 12 may also be parallel to the longitudinal axis 1110 of the handle portion 111. Therefore, the layout of the suction motor 12 can effectively utilize the space, and when the air treatment assembly 3 is arranged in front of the suction motor 12, the suction motor 12 with the layout can provide more installation space for the air treatment assembly 3, so that the air treatment assembly 3 can extend the volume backwards as much as possible on the premise of fixing the front end position, the volume of the cyclone cavity 301 and/or the dust collection cavity 302 of the air treatment assembly 3 can be improved, and the action effect of the air treatment assembly 3 is improved. In addition, in other embodiments of the present disclosure, as shown in fig. 9, the axis 120 of the suction motor 12 may also be disposed entirely 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 prefilter assembly 2 may include: the prefilter housing 21 is a closed housing except for the inlet 2101 and the outlet 2102 on the outer surface of the prefilter housing 21, i.e., the prefilter housing 21 is a closed housing regardless of the presence of the inlet 2101 and the outlet 2102, and the filter assembly 22 is disposed within the prefilter housing 21 and is in fluid communication between the inlet 2101 and the outlet 2102.

Thus, the filter assembly 22 is located in the closed prefilter box 21, so that the prefilter assembly 2 can be a separate module, and part of the surface of the filter assembly can form the appearance surface of the handheld dust collector 100, and thus, the disassembly and assembly of the prefilter assembly 2 cannot cause the recombination of the air treatment assembly 3 and the casing 11. In addition, since the filter assembly 22 is disposed in the prefilter box 21, the filter assembly 22 can be removed from the housing 11 together during the process of removing the prefilter box 21 from the housing 11, and the filter assembly 22 can be mounted to the housing 11 together during the process of mounting the prefilter box 21 to the housing 11, thereby effectively improving the overall disassembly and assembly efficiency of the prefilter assembly 2 and facilitating the operation of the user.

In other words, when the user attaches and removes the prefilter assembly 2 to the body assembly 1, the user does not need to touch the filter assembly 22 directly by hand, or the filter assembly 22 is not exposed to the outside, so that secondary pollution can be avoided. More precisely, assuming that the prefilter assembly 2 does not include the prefilter cartridge 21 but includes only the filter assembly 22, as illustrated in fig. 3, when the filter assembly 22 needs to be removed for cleaning, a user needs to first 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 dirt such as dust attached to the filter assembly 22 is inevitably dropped into the environment during the movement of the filter assembly 22, thereby causing secondary pollution.

However, when the prefilter assembly 2 includes the prefilter cartridge 21 housing the filter assembly 22, as illustrated in fig. 8 to 11, when the user needs to take out the filter assembly 22 for cleaning, the user only needs to remove the prefilter cartridge 21 from the housing 11, then move the prefilter cartridge 21 to a pool or a garbage can, and then open the prefilter cartridge 21 to take out the filter assembly 22 for cleaning, so that the problem of dust falling into the environment does not occur during the movement of the prefilter cartridge 21 as a closed cartridge body, and secondary pollution can be effectively avoided.

In addition, when the filter assembly 22 includes a plurality of prefilters, such as the primary prefilter 221 and the secondary prefilter 222, if the prefilter assembly 2 does not include the prefilter cartridge 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 primary prefilter 221 alone and an action of taking out the secondary prefilter 222 alone, are required, and the actions are cumbersome and time-consuming. When the prefilter assembly 2 includes the prefilter housing 21 that houses the filter assembly 22, as illustrated in fig. 8-11, the primary filter 221 and the secondary filter 222 can be removed together by only one removal operation of the prefilter housing 21, thereby simplifying the operation.

Similarly, if the prefilter assembly 2 does not include the prefilter cartridge 21, as illustrated in fig. 3-4, multiple mounting actions, such as the action of individually mounting the primary prefilter 221 and the action of individually mounting the secondary prefilter 222, are required during the process of mounting the filter assembly 22, which is cumbersome and time consuming, and the primary and

secondary prefilters

221 and 222 are easily reversed. When the prefilter assembly 2 includes the prefilter housing 21 that accommodates the filter assembly 22, as illustrated in fig. 8-11, if the filter assembly 22 is to be installed, the primary prefilter 221 and the secondary prefilter 222 can be installed together only by one operation of installing the prefilter housing 21, thereby simplifying the operation and avoiding the problem that the primary prefilter 221 and the secondary prefilter 222 are reversely installed. In order to more clearly illustrate how the time and effort can be saved, the following description will take the application scenario of fig. 3 and 8 as an example.

In the example of fig. 3, if the filter assembly 22 needs to be cleaned, the user needs one hand to perform three actions of opening the first cover 114, taking out the primary pre-filter 221 and taking out the secondary pre-filter 222, and the other hand needs to hold the machine body assembly 1 all the way during the execution of the three actions, and the time for holding the machine body assembly 1 by the other hand is long, so that the operation of the user is laborious. After the cleaning of the primary pre-filter 221 and the secondary pre-filter 222 is finished, the user needs to hold the machine body assembly 1 with one hand, and the other hand performs three actions of mounting the secondary pre-filter 222, mounting the primary pre-filter 221 and mounting the first cover 114, so that the operation is complicated, and 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 dismounting the prefilter assembly 2 from the housing 11, the user holds the housing assembly 1 with one hand, only one action of dismounting the prefilter box 21 is needed with the other hand, the process is very short, the user is very labor-saving, the subsequent user can put down the housing assembly 1, take the small prefilter box 21 to a cleaning position, then easily dismount the prefilter box 21, take out the filter assembly 22 for cleaning, mount the filter assembly 22 back to the prefilter box 21, then take the prefilter box 21 back to the housing assembly 1, hold the housing assembly 1 with one hand, and only one action of reloading the prefilter box 21 to the housing assembly 1 with the other hand is needed, so that the operation is very quick and labor-saving.

In some specific examples of the present disclosure, as shown in fig. 11, the filter assembly 22 is detachably connected to the prefilter housing 21, for example, the prefilter housing 21 may include a housing 211 and a lid 212, and when the prefilter assembly 2 is detached from the housing 11, the lid 212 may be opened and the filter assembly 22 may be removed from the housing 211, thereby facilitating cleaning, replacement, and the like of the filter assembly 22. Of course, the present disclosure is not limited thereto, and the prefilter assembly 2 may be non-removable, as the cost permits, at which time the user need only replace the prefilter assembly 2 with a new one on a regular basis.

In some embodiments of the present disclosure, as shown in fig. 4, 9, and 15, the filter assembly 22 may include a primary pre-filter 221 and a secondary pre-filter 222. Specifically, the primary pre-filter 221 is in fluid communication upstream of the secondary pre-filter 222, and the primary pre-filter 221 has a larger filter diameter than the secondary pre-filter 222, i.e. "the particle size of the smallest dust that the primary pre-filter 221 can filter" is larger than the particle size of the smallest dust that the secondary pre-filter 222 can filter ", in other words, the primary pre-filter 221 achieves coarse filtration relative to the secondary pre-filter 222 and the secondary pre-filter 222 achieves fine filtration relative to the primary pre-filter 221.

Thus, the air flow to the prefilter assembly 2, such as from the inlet 2101 of the prefilter housing 21 into the prefilter housing 21, may be first coarse filtered through the primary prefilter 221, then fine filtered through the secondary prefilter 222, and then out the outlet 2102 of the prefilter housing 21. Thereby, the filtering effect of the prefilter assembly 2 can be effectively improved, and the cleanliness of the air flow flowing to the suction motor 12 can be improved, so that the suction motor 12 can work stably and effectively for a long time.

Preferably, the primary pre-filter 221 and the secondary pre-filter 222 are removably connected, for example, in the example shown in fig. 10-11, the secondary pre-filter 222 may be withdrawn from the primary pre-filter 221. Therefore, the user can split the primary pre-filter 221 and the secondary pre-filter 222 and respectively perform corresponding treatment on the primary pre-filter 221 and the secondary pre-filter 222 according to the needs, for example, corresponding cleaning means are adopted or replaced according to the material and the pollution degree of the primary pre-filter 221, and corresponding cleaning means are adopted or replaced according to the material and the pollution degree of the secondary pre-filter 222, so that the maintenance effect can be improved and the maintenance cost is reduced.

Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, for example, in the example shown in fig. 3, the prefilter assembly 2 may not include the prefilter cartridge 21 but include the filter assembly 22, where the housing 11 may include a mounting cavity 1123 for accommodating the filter assembly 22 and a 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 removed from the mounting cavity 1123, and where the assembly and disassembly of the prefilter assembly 2 including only the filter assembly 22 may result in the reorganization of the housing 11, but may reduce the production cost.

Next, the prefilter assembly 2 according to three specific examples of the present disclosure is described.

Example one

As shown in fig. 3 and 4, the prefilter assembly 2 does not include the prefilter cartridge 21, but includes the filter assembly 22, and the filter assembly 22 includes a primary prefilter 221 and a secondary prefilter 222, with the primary prefilter 221 being located above the secondary prefilter 222. The upper mounting portion 1121 has a mounting cavity 1123, the top of the mounting cavity 1123 is opened and the switch is controlled by the first cover 114, the filter assembly 22 is disposed in the mounting cavity 1123, a gap 11230 is formed between the upper primary pre-filter 221 and the bottom surface of the first cover 114, the lower mounting portion 1122 has a second pipe 13, the upper end of the second pipe 13 penetrates into the mounting cavity 1123 and passes through the secondary pre-filter 222 and the primary pre-filter 221 in turn upwards, the lower mounting portion 1122 also has a first pipe 14, the upper end of the first pipe 14 penetrates into the mounting cavity 1123 and is positioned at the bottom of the secondary pre-filter 222, when the suction motor 12 is operated, clean air can be filtered out by the air processing assembly 3, and can be discharged upwards into the gap 11230 above the primary pre-filter 221 along the second pipe 13, then the air flow discharged into the gap 11230 and then flows downwards through the primary pre-filter 221 and the secondary pre-filter 222 in turn under the negative pressure in the first pipe 14, and then flows to the suction motor 12 through the first pipe 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 prefilter assembly 2 is detachably provided in the mounting cavity 1123, and the top surface of the prefilter assembly 2 constitutes a part of the exterior surface of the hand cleaner 200 when the prefilter assembly 2 is mounted in the mounting cavity 1123.

The prefilter assembly 2 includes a prefilter cartridge 21 and a filter assembly 22, and the filter assembly 22 includes a primary prefilter 221 and a secondary prefilter 222, wherein the primary prefilter 221 may be sleeve-shaped and sleeved outside the secondary prefilter 222 such that all filter holes 2221 of the secondary prefilter 222 are surrounded by the primary prefilter 221. Thus, it is possible to simply and effectively ensure that the air flow flowing to the secondary pre-filter 222 is all previously filtered by the primary pre-filter 221, so that the filtering energy efficiency of the pre-filter assembly 2 can be improved.

For example, in the example shown in fig. 11, the secondary pre-filter 222 may have a substantially tubular shape, and the filter holes 2221 of the secondary pre-filter 222 are formed in the peripheral wall of the secondary pre-filter 222, and the primary pre-filter 221 is fitted around the peripheral wall of the secondary pre-filter 222, and the air flow filtered through the primary pre-filter 221, the air flow filtered through the filter holes 2221 in the peripheral wall of the secondary pre-filter 222, and the air flow into the exhaust passage 2222 in the lumen of the secondary pre-filter 222 (see fig. 9).

As shown in fig. 8-11, the prefilter assembly 2 may further include: and a connecting tube 23, one end of the connecting tube 23 is positioned in the prefilter housing 21 and extends into the primary prefilter 221 and is in fluid communication with the exhaust passage 2222 of the secondary prefilter 222, and the other end of the connecting tube 23 extends out of the prefilter housing 21 through the outlet 2102. Therefore, the air flow filtered by the secondary prefilter 222 can be reliably discharged from the outlet 2102 to the outside of the prefilter box 21 through the connecting pipe 23, so that the filtering efficiency and the filtering reliability of the prefilter assembly 2 are improved, and the problems that the air flow filtered by the secondary prefilter 222 is mixed with the air flow not filtered by the secondary prefilter 222, and the filtering efficiency is reduced are avoided. 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, by providing the connecting tube 23, the connection of the prefilter assembly 2 to the first conduit 14 is also facilitated.

As shown in fig. 8-11, the longitudinal axis 20 of the prefilter assembly 2 extends in a transverse direction, that is, the primary prefilter 221 may extend in a transverse direction about the axis of the secondary prefilter 222, the exhaust passage 2222 of the secondary prefilter 222 may extend in a transverse direction, at which point the inlet 2101 of the prefilter housing 21 may be positioned at the bottom of the prefilter housing 21, and the outlet 2102 of the prefilter housing 21 may be positioned at one end in a transverse direction of the prefilter housing 21, such that air flow may enter the prefilter housing 21 from bottom to top through the inlet 2101, then be filtered by the primary prefilter 221, then be filtered by the secondary prefilter 222, and then be exhausted out of the prefilter housing 21 through the outlet 2102 in a transverse direction through the exhaust passage 2222 of the secondary prefilter 222. Therefore, the path of the airflow flowing through the prefilter assembly 2 can be simplified, so that the filtering efficiency can be improved on one hand, and the structure and the processing can be simplified on the other hand.

Alternatively, the primary pre-filter 221 is a piece of filter cotton material, the secondary pre-filter 222 is a piece of nonwoven fabric material, and the connecting tube 23 is a plastic tube. Thus, the filter diameter of the primary pre-filter 221 can be ensured to be larger than that of the secondary pre-filter 222 simply and effectively. Further, it is possible to ensure that the secondary pre-filter 222 has sufficient supporting strength to facilitate the fitting of the primary pre-filter 221, and to ensure that the primary pre-filter 221 has sufficient flexibility to be tightly fitted over the secondary pre-filter 222. Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the primary pre-filter 221 and the secondary pre-filter 222 may be processed using other materials, for example, the secondary pre-filter 222 may be processed using a plastic material or the like.

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 prefilter assembly 2 is detachably provided in the mounting notch 1124, and both sides and the top surface of the prefilter assembly 2 respectively constitute a part of the external appearance surface of the hand cleaner 200 when the prefilter assembly 2 is mounted in the mounting notch 1124.

As shown in fig. 14 to 15, the prefilter assembly 2 includes a prefilter housing 21, a filter assembly 22, an inner tube 24, and an outer tube 25, the filter assembly 22 includes a primary prefilter 221 and a secondary prefilter 222, the filter assembly 22 and the inner tube 24 are both located in the prefilter housing 21, the outer tube 25 is located outside the prefilter housing 21, an inlet 2101 is formed at the bottom of the prefilter housing 21, an outlet 2102 is formed at one lateral end of the prefilter housing 21, the outlet 2102 is disposed at a height higher than the inlet 2101, the primary prefilter 221 is located below the secondary prefilter 222, the inner tube 24 is embedded in the primary prefilter 221 and the inlet end of the inner tube 24 is in direct communication with the inlet 2101 of the prefilter housing 21, the outlet end of the inner tube 24 is in direct communication with the primary prefilter 221, the secondary prefilter 222 is in direct communication with the outlet 2102 of the prefilter housing 21, and the outlet 2102 of the prefilter housing 21 is in communication 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 direction opposite to the airflow direction of the outlet 2102 of the prefilter cartridge 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 prefilter cartridge 21, then flow into the primary prefilter 221 in a first direction (a rearward right-forward direction as shown in fig. 14), the air flow filtered via the primary prefilter 221 may enter the secondary prefilter 222 upward, then be filtered by the secondary prefilter 222 in a second direction opposite the first direction (a forward-rearward direction as shown in fig. 14), and finally be discharged into the outer tube 25 through the outlet 2102 of the prefilter cartridge 21. Thus, by providing the inner tube 24 in the prefilter module 2, the airflow path can be effectively extended, the filtering effect can be improved, the prefilter module 2 can be easily connected to the second duct 13, and the prefilter module 2 can be easily connected to the first duct 14 by providing the outer tube 25.

Next, an 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: cyclone chamber 301, dust collection chamber 302 and cyclone separator 33, cyclone separator 33 is provided in cyclone chamber 301, and dust collection chamber 302 communicates with cyclone chamber 301 through dust fall port 305, that is, the air flow entering cyclone chamber 301 can be cyclone separated, and the dust separated by the air in cyclone chamber 301 can enter into dust collection chamber 302 through dust fall port 305. The cyclone separator 33 is understood in a broad sense, and may be one stage or multiple stages. It will be appreciated that the construction and operation of primary cyclones and multi-stage cyclones are well known to those skilled in the art, and that the cyclone separator 33 is merely illustrated as a primary cyclone, and that it will be apparent to those skilled in the art after reading the disclosure herein that the cyclone separator 33 is an example of a multi-stage cyclone.

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 the lateral direction. Therefore, by horizontally arranging the cyclone cavities 301, the overall height of the handheld dust collector 100 can be effectively reduced, 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 toppling phenomenon of the handheld dust collector 100 on the horizontal plane is improved, and in addition, the overall height and the gravity center of the handheld dust collector 100 can be reduced, so that the handheld of the handheld dust collector 100 can be lighter and more labor-saving. Here, it should be noted that the axis 3010 of the cyclone chamber 301 described herein refers to a cyclone axis in the cyclone chamber 301.

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

As shown in fig. 19 and 20, a cyclone 33 is provided on the cup cover 32 to move with the cup cover 32, the cyclone 33 moves into the cyclone chamber 301 (as shown in fig. 23) when the cup cover 32 closes the cyclone chamber 301 and the dust collecting chamber 302, and the cyclone 33 moves out of the cyclone chamber 301 (as shown in fig. 20) when the cup cover 32 opens the cyclone chamber 301 and the dust collecting chamber 302.

Thus, the air treatment assembly 3 may be a stand-alone module, and a portion of its surface may form the exterior surface of the hand-held cleaner 100, such that removal of the air treatment assembly 3 does not result in a re-assembly of the prefilter 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 ash, the cyclone separator 33 can be taken out of the dust cup 31 at the same time so as to clean the cyclone separator 33, and when the cup cover 32 is covered, the cyclone separator 33 can be assembled into the dust cup 31 at the same time, so that the self-assembly and disassembly efficiency of the air treatment assembly 3 is effectively improved, and the operation of a user is convenient.

In some specific examples of the present disclosure, as shown in fig. 23, cyclone 33 may be integral with cap 32 when cyclone 33 is provided on cap 32 to move with cap 32. Thus, the cyclone 33 is easy to process, and has high structural reliability and high working stability. In other specific examples of the present disclosure, cyclone 33 may also be removably disposed on lid 32 when cyclone 33 is disposed on lid 32 to move with lid 32. Thus, when the cup cover 32 is opened, the cyclone separator 33 can be removed from the cup cover 32, so that the cup cover 32 and the cyclone separator 33 can be cleaned respectively, and the maintenance can be facilitated.

In some embodiments of the present disclosure, as shown in fig. 23, the dust cup 31 may include a cup body 311 and a partition 312, the partition 312 being provided inside the cup body 311 and dividing an inner cavity of the cup body 311 into the cyclone chamber 301 and the dust collection chamber 302, and the dust falling port 305 being formed on the partition 312. Thus, the dust cup 31 is simple in structure and convenient to process.

For example, in the specific example shown in fig. 23, the partition 312 may be a transverse arc plate, the cyclone chamber 301 is located above the arc plate, and the dust collecting chamber 302 is located below the arc plate. Thus, the partition 312 has a simple shape, is easy to process, and facilitates cleaning of the cyclone chamber 301 and the dust collection chamber 302. Alternatively, the arc-shaped plate-shaped partition 312 is integrally formed with the cup 311, so that no assembly is required, the 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, and the cyclone chamber 301 is located inside the cylindrical partition 312, and the dust collecting chamber 302 is located outside the cylindrical partition 312, so that the cyclone chamber 301 is simply and effectively ensured to be a cylindrical chamber, and thus the cyclone separation effect in the cyclone chamber 301 is ensured. Alternatively, cylindrical spacer 312 is in mating engagement with cap 32 and cup 311, respectively, whereby cylindrical spacer 312 can be removed from cup 311 for more thorough cleaning.

In some alternative embodiments of the present disclosure, as shown in fig. 20, the cup 311 may be a first cylinder having one axial side (e.g., a front side as shown in fig. 20) opened and the other axial side (e.g., a rear side as shown in fig. 20) closed, and the cap 32 is used to open and close the axial open end (e.g., a rear end as shown in fig. 20) of the first cylinder, whereby the cup 311 is simple in structure and easy to manufacture. In other alternative embodiments of the present disclosure, cup 311 may further include a second cylinder (not shown) open on both sides in the axial direction and an end cap (not shown) for opening and closing one axial end (the rear end as shown in fig. 20) of the second cylinder, and cap 32 for closing the other axial end (the front end as shown in fig. 20) of the second cylinder, whereby cup 311 may be further disassembled to facilitate more thorough cleaning of 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, the cyclone separator 33 being in a plug-in fit 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. 17-18, a front end side of the cyclone chamber 301 has a dirty air inlet 303 penetrating tangentially, a rear end side of the cyclone chamber 301 has a dust fall port 305 penetrating from top to bottom, a rear end of the cyclone chamber 301 has a clean air outlet 304 penetrating axially from front to rear, the cyclone separator 33 includes a cone 331 and a filter screen 332 (in conjunction with fig. 20), the front end of the cone 331 is closed and radially opposite to the dirty air inlet 303, a rear end peripheral wall of the cone 331 is closed and radially opposite to the dust fall port 305, an air intake 3310 is formed in a middle portion of the cone 331, a rear end face of the cone 331 is opened to allow an inner cylinder chamber of the cone 331 to communicate with the clean air outlet 304, and the filter screen 332 is provided at the air intake 3310 (a state after the filter screen 332 is removed is shown in fig. 17).

Of course, the present disclosure is not limited thereto, and in other embodiments of the present disclosure, the cyclone separator 33 may not include the filter screen 332, and when the cyclone separator 33 does not include the filter screen 332, the air intake 3310 may be composed of a plurality of air intake micro holes in addition to the overall opening in the mouth that satisfies the i, f values described later, and in this case, the area where the plurality of air intake micro holes are located may satisfy the i, f values 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 332 may be detachably assembled together, or may be two-shot molded as an integral structure.

That is, the dirty air inlet 303, the air inlet 3310 of the cone 331 and the dust falling port 305 are sequentially spaced apart from each other along the front-to-rear direction, so that the problem that the air flow 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 and is not cyclone-separated outside the cone 331 can be avoided, and the problem that the air flow still enters the inner chamber of the cone 331 through the air inlet 3310 at the dust falling port 305 and the dust is involved 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 length direction of the cyclone chamber 301 and the dust collecting chamber 302 are both front-rear directions, 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 dust collecting chamber 302 (the length in the front-rear direction as shown in fig. 23). Therefore, on one hand, the cyclone chamber 301 can be ensured to have enough volume for cyclone separation, and on the other hand, the problems of inconvenient hand holding and the like caused by overweight of the dust collecting chamber 302 and pulling down of the gravity center of the whole machine can be avoided, so that the user can hold the dust collecting chamber conveniently, the production materials are saved, and the production cost is reduced.

In some embodiments of the present disclosure, as shown in fig. 20, the air handling assembly 3 has a dirty air inlet 303, a clean air outlet 304, and a detection vent 306 on the exterior surface thereof, that is, the air handling assembly 3 is a closed unit when the air handling assembly 3 is removed from the cabinet 11, if the presence of the dirty air inlet 303, the clean air outlet 304, and the detection vent 306 is not considered. The dirty air inlet 303 and the clean air outlet 304 are both communicated with the cyclone chamber 301, the detection air vent 306 is communicated with the dust collecting 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 air vent 306, but not limited thereto, and as shown in fig. 23, the dust full indicator 4 may also be disposed in the dust collecting chamber 302 and connected with the detection air vent 306.

Therefore, by arranging the detection vent 306, the handheld dust collector 100 can comprise the dust full indicator 4, so that whether the handheld dust collector 100 is full or not can be simply and effectively judged, and a user is prompted to timely clean the dust collection cavity 302, so that the cleaning effect is reliable. It should be noted that the structure and the working principle of the dust-full indicator 4 are well known to those skilled in the art, that is, the device capable of sending out an alarm signal after the dust in the dust collecting chamber 302 reaches the predetermined volume, and will not be described in detail herein.

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 falling ports 305 are spaced apart from the detection air ports 306 in the front-rear direction. Thus, the problem that the dust falling from the dust falling port 305 falls to the detection air port 306 and affects the detection of the dust-full indicator 4 can be avoided, and the reliable detection result of the dust-full indicator 4 can be ensured.

For example, in the specific example shown in fig. 23, the dust collection chamber 302 includes a first chamber portion 3021 located directly below the cyclone chamber 301 and a second chamber portion 3022 located at a rear lower side of the cyclone chamber 301, and the detection vent 306 is formed on a 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-rear direction, and the working effect of the cyclone chamber 301 can be ensured not to be affected.

In some alternative embodiments of the present disclosure, as shown in fig. 23, the dust full indicator 4 may be disposed within the dust collection chamber 302, thereby ensuring that the dust full indicator 4 is reliably operated by disposing the dust full indicator 4 within the dust collection chamber 302, since the air treatment assembly 3 may be removed, thereby facilitating post-use maintenance of the dust full indicator 4.

For example, in the specific example shown in fig. 23, the rear end surface of the second cavity 3022 may extend obliquely from top to bottom in a front-to-rear direction, and the dust indicator 4 may be disposed within the second cavity 3022 with the longitudinal axis 40 of the dust indicator 4 perpendicular to the rear end surface of the second cavity 3022. By thus providing the rear end surface of the second chamber section 3022, more space for the dust indicator 4 can be provided for installation, and the space of the second chamber section 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 fullness indicator 4 may be further disposed at the front portion within the dust collection chamber 302, and at this time, the detection vent 306 may be further formed at the front end surface or the like of the first chamber section 3021, thereby eliminating the need to process the second chamber section 3022.

In other alternative embodiments of the present disclosure, as shown in fig. 15, the dust full indicator 4 is provided within the housing 11. Thereby, the dust full indicator 4 is prevented from occupying the space in the dust collecting chamber 302, and the operation 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 treatment assembly 3. Therefore, the distance between the dust full indicator 4 and the air treatment assembly 3 can be shortened, the dust full indicator 4 is conveniently communicated with the detection vent 306, the dust full condition is conveniently detected, and the structure is simplified. Further, in the specific example shown in fig. 15, the longitudinal axis 40 of the dust 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 compactness of the layout may be improved.

Next, with reference to fig. 19-23, an air treatment assembly 3 according to one specific embodiment of the present disclosure is described.

19-23, the air handling assembly 3 includes a dirt cup 31, a cup cover 32, and a cyclone separator 33, the dirt cup 31 including a cup body 311 and an arcuate plate-shaped partition 312, the partition 312 dividing the interior cavity of the dirt cup 31 into a cyclone chamber 301 above the partition 312 and a dust collection chamber 302 below the partition 312, the partition 312 having a dust fall 305 thereon. Dust cup 31 has a dirty air inlet 303, cup cover 32 has a clean air outlet 304 and a detection vent 306, cyclone separator 33 is disposed on cup cover 32 and communicates with clean air outlet 304, and dust full indicator 4 is mounted on cup cover 32 by detection vent 306 and extends into dust collection chamber 302. Cup cover 32 can be removed from dirt cup 31 and dust indicator 4 can be removed from cup cover 32 to facilitate more thorough cleaning of air handling assembly 3.

In some embodiments, the dust full indicator 4 may alert the user to clear the dust collection cavity 302 by way of a displacement of a float flag or the like. When the hand-held cleaner 100 does not have the dust fullness indicator 4, it is difficult for the user to accurately determine the dust fullness condition in the dust collecting chamber 302, which causes excessive dust suction in the dust collecting chamber 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 dust cup 31 and penetrates the cyclone chamber 301 tangentially from top to bottom, the ash drop port 305 penetrates 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 plastic cone 331. The cone 331 may include, connected in sequence 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 so that the inner cavity of the cone 331 is communicated with the clean air outlet 304, the middle section 331b is provided with an air inlet 3310 penetrating along the axial direction, and the filter screen 332 covers the air inlet 3310.

In operation, dirty air enters the cyclone chamber 301 downwardly through the dirty air inlet 303, clean air which has been separated by the cyclone chamber 301 enters the interior of the cone 331 through the filter screen 332 and the air inlet 3310, and is then discharged from the clean air outlet 304, and dirt which has been separated in the cyclone chamber 301 enters the dust collection chamber 302 through the dust fall opening 305. Therefore, the air duct is simple in layout, small in occupied space, smooth in airflow circulation and high in ash falling reliability.

Wherein the diameter m of the cyclone chamber 301 satisfies: 30 mm.ltoreq.m.ltoreq.50mm, that is, the maximum diameter at any section of the cyclone chamber 301 is not more than 50mm, the minimum diameter is not less than 30mm, and the difference o between the radii of the cyclone chamber 301 and the cone 331 satisfies: 20 mm.ltoreq.o.ltoreq.40 mm, that is, the difference o between the radii at any section of the cyclone chamber 301 is not more than 40mm at maximum and not less than 20mm at minimum. The length k1 of the ash drop port 305 satisfies: 10 mm.ltoreq.k1.ltoreq.30mm, that is, the length k1 of the dust falling port 305 is not more than 30mm at maximum and not less than 10mm at minimum, and the width k2 of the dust falling port 305 satisfies: the width k2 of the ash drop port 305 is not more than 50mm at maximum and not less than 30mm at minimum, which is 30mm or less than k2 and 50mm or less. 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 whole machine proportion is coordinated and attractive, the gravity center is stable, and the use is light.

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

In some embodiments of the present disclosure, as shown in fig. 24 to 30, the hand-held cleaner 100 may further include the suction pipe assembly 5, in which case the cabinet 11 may include a mounting portion 112, a suction nozzle portion 113 positioned in front of the mounting portion 112, and a handle portion 111 positioned at the 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 the elbow 51 and the handle 52 provided on the elbow 51. Thus, the suction tube assembly 5 can be used to vary the suction angle 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 hand-held vacuum cleaner 100 is tested, the air suction pipe assembly 5 can be mounted on the air suction pipe 113, and the air suction pipe assembly 5 is connected with the testing device 200, so that performance tests of different angles can be performed on the hand-held vacuum cleaner 100, that is, multi-angle performance tests can be realized for the hand-held vacuum cleaner 100 to conform to human body use. However, in the related art, the hand-held cleaner 100 adopts a horizontal testing method, that is, the suction direction and the hand-held cleaner 100 are located on the same horizontal line, the testing function and the angle are single, and the performance parameters and the dust suction state of the hand-held cleaner 100 cannot be tested when the user uses 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 accessory 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, with reference to fig. 30, by installing the suction pipe assembly 5 on the suction pipe portion 113, the angle between the housing 11 and the surface to be cleaned can be changed, thereby preventing the housing 11 from colliding with the surface to be cleaned and improving the cleaning range and the use safety of the hand-held cleaner 100.

In addition, with reference to fig. 24 and 25, the handle 52 is provided on the air suction pipe assembly 5, so that the air suction pipe assembly 5 and the casing 11 can be conveniently detached, and the handle 111 on the casing 11 can be gripped by one hand and the handle 52 on the air suction pipe assembly 51 can be gripped by the other hand in the cleaning operation or testing operation, so that the suction inlet 510 of the air suction pipe assembly 51 can be aligned with the cleaning position or the testing device 200, and the operation is convenient.

With reference to fig. 30, when cleaning a space close to the floor, for example, when cleaning the bottom of a sofa, such as the hand-held cleaner 100 on the left side in fig. 30, without providing the air suction pipe assembly 5, the distance between the air treatment assembly 3 and the floor is close, and the air treatment assembly 3 is easy to collide with the floor, which is not beneficial to cleaning the bottom of the sofa. And the air suction pipe assembly 5 is adopted, as the hand-held dust collector 100 on the right side in fig. 30, because the air suction pipe assembly 5 has a bending angle, when the air suction pipe assembly 5 is connected with the flat pipe 9, the flat pipe 9 can easily extend into the bottom of a sofa, and at the moment, the air treatment assembly 3 is further at a large distance from the ground, so that the technical problem of collision can be effectively solved, and cleaning is facilitated.

As shown in fig. 25, the air suction pipe assembly 5 according to the first embodiment of the present disclosure, the elbow 51 may include: a first pipe section 511 and a second pipe section 512, the first pipe section 511 is connected with the suction nozzle portion 113, the second pipe section 512 is arranged at the upstream of the first pipe section 511, that is, after the air flow is sucked through the suction inlet 510 of the elbow pipe 51, the air flow sequentially flows through the second pipe section 512 and the first pipe section 511 to enter the suction nozzle portion 113, wherein when the elbow pipe 51 is installed on the suction nozzle portion 113, the axis 5110 of the first pipe section 511 coincides with the axis 1130 of the suction nozzle portion 113, and the second pipe section 512 extends obliquely upwards along a direction away from the first pipe section 511 (a direction from rear to front as shown in fig. 25). Thus, in connection with fig. 30, if the second pipe section 512 is made horizontal during the operation of the hand-held cleaner 100, the body assembly 1 and the air treatment assembly 3 can be tilted backward and upward, so that the problems of collision between the body assembly 1 and the air treatment assembly 3 and the surface to be cleaned can be effectively avoided.

In this embodiment, the first pipe section 511 and the second pipe section 512 are rigidly connected, and the included angle epsilon between the second pipe section 512 and the first pipe section 511 is fixed, for example epsilon may be 30 ° to 60 °. That is, the angle ε between the second pipe segment 512 and the first pipe segment 511 may be 30 ° at a minimum and 60 ° at a maximum. E.g., as shown in fig. 26, epsilon may be 30 °; as also shown in fig. 27, epsilon may be 45 °; as also shown in fig. 28, epsilon may be 60 deg.. Thus, 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 included angles ε in the face of different testing and cleaning situations.

In this embodiment, as shown in fig. 26, a handle 52 may be provided at the junction of the first pipe section 511 and the second pipe section 512. This allows the user to better control the orientation of the elbow 51 and allows the user to more effort-saving operation of the suction tube assembly 5. For example, the handle 52 may be an arc handle, i.e., the handle 52 may be arc-shaped, with one end of the arc handle connected to the first tube section 511 and the other end of the arc handle connected to the second tube section 512, thereby facilitating the processing of the handle 52 and providing greater gripping comfort.

As shown in fig. 29, the air suction pipe assembly 5 according to the second embodiment of the present disclosure, the elbow 51 may include: the first pipe section 511, the second pipe section 512 and the transitional connecting piece 513, wherein the first pipe section 511 is connected with the suction nozzle portion 113, the second pipe section 512 is arranged at the upstream of the first pipe section 511, the transitional connecting piece 513 is connected between the second pipe section 512 and the first pipe section 511, so that the included angle between the second pipe section 512 and the first pipe section 511 can be adjusted, namely, the first pipe section 511 and the second pipe section 512 are not rigidly connected any more, and the included angle between the first pipe section 511 and the second pipe section 512 can be adjusted. Therefore, by arranging the transition connecting piece 513, the included angle between the first pipe section 511 and the second pipe section 512 can be adjusted, so that different practical requirements can be met. At this time, the handle 52 may be disposed on the second pipe section 512, so as to avoid the handle 52 from affecting the adjustment of the included angle between the first pipe section 511 and the second pipe section 512, on the one hand, ensure that the included angle between the first pipe section 511 and the second pipe section 512 can be smoothly adjusted, and on the other hand, enable the user to hold the air suction pipe assembly 5 more effort-saving.

For example, the transition piece 513 may have the second tube segment 512 at an angle ε relative to the first tube segment 511 that satisfies: the angle epsilon is more than or equal to 0 DEG and less than or equal to 90 DEG, that is, the angle between the first pipe section 511 and the second pipe section 512 can be continuously changed between 0 DEG and 90 DEG through the adjustment of the transition connecting piece 513 so as to be changed into any value of 0 DEG to 90 DEG, thereby better meeting different practical requirements.

Specifically, as shown in fig. 29, the transition piece 513 may include: a hose 5131 and a connector 5132, the hose 5131 fluidly connecting the first tube segment 511 to the second tube segment 512, the connector 5132 being hinged to the first tube segment 511 and the second tube segment 512, respectively. Thus, the transition piece 513 is simple in structure and can simply and effectively ensure that the first tube segment 511 and the second tube segment 512 are movably connected and in fluid communication.

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

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

The housing assembly 1 comprises a casing 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 casing 11, the axis 120 of the suction motor 12 and the longitudinal axis 1110 of the handle portion 111 each extending obliquely from top to bottom, from front to back. More specifically, in the example shown in FIG. 4, the longitudinal axis 1130 of the intake air 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 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 all intersect the longitudinal axis 1130 of the intake air duct 1131 at an angle θ of 20 ° to 90 °, thereby facilitating ease of operation.

As shown in fig. 3, the casing 11 includes a mounting portion 112, a suction nozzle portion 113 and a handle portion 111, the suction 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 pipe air duct 1132 extending downward is further provided at a rear end of the suction nozzle portion 113, an upper end of the bent pipe air duct 1132 is communicated with the air intake air duct 1131, and a lower end of the bent pipe air duct 1132 is communicated with the dirty air inlet 303 of the air processing assembly 3. When the suction motor 12 is operated, dirty air is drawn in through the intake duct 1131, enters the air handling assembly 3 through the elbow duct 1132, flows to the prefilter assembly 2, then to the suction motor 12, and finally exits through the exhaust port 1151 in the housing 11.

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

As shown in fig. 3 and 4, the prefilter assembly 2 is in air flow communication between the suction motor 12 and the air treatment assembly 3, a mounting cavity 1123 may be provided in the housing 11, and the housing 11 includes a first cover 114 for opening and closing the mounting cavity 1123, and the prefilter assembly 2 is a filter assembly 22 provided in the mounting cavity 1123, and when the first cover 114 on the housing 11 is opened, the prefilter assembly 2 may be removed from the mounting cavity 1123 for cleaning. Wherein the opening and closing lock of the first cover 114 may be controlled by the second latch mechanism 162.

As shown in fig. 3 and 4, the filter assembly 22 includes a primary pre-filter 221 and a secondary pre-filter 222, the primary pre-filter 221 is located above the secondary pre-filter 222, a gap 11230 is formed between the primary pre-filter 221 and the first cover 114, a second pipe 13 is formed in the mounting portion 112, an upper end of the second pipe 13 penetrates into the mounting cavity 1123 and passes through the secondary pre-filter 222 and the primary pre-filter 221 in sequence, a first pipe 14 is formed in the mounting portion 112, an upper end of the first pipe 14 penetrates into the mounting cavity 1123 and is located at a bottom of the secondary pre-filter 222, clean air can be filtered out by the air treatment assembly 3 when the suction motor 12 is operated, the clean air can be discharged upwards into the gap 11230 above the primary pre-filter 221 along the first pipe 14, then the air flow discharged above the primary pre-filter 221 flows downwards through the primary pre-filter 221 and the secondary pre-filter 221 in sequence under the negative pressure in the first pipe 14, and then flows to the suction motor 12 through the first pipe 14.

The air treatment assembly 3 comprises: dirt cup 31, bowl cover 32 and cyclone separator 33, cyclone separator 33 is an integral part of bowl cover 32, and bowl cover 32 and dirt cup 31 can be separated for cleaning or rinsing, respectively. The air handling unit 3 is a separate component and can be used as a part of the external surface of the hand-held cleaner 100 when being mounted on the housing 11, so that the air handling unit 3 can be assembled and disassembled with the housing 11 without influencing the recombination of the housing 11, that is, the housing 11 does not include a cover for covering the air handling unit 3, and therefore, the air handling unit 3 can be mounted without the recombination of opening and closing the cover. However, the switching operation of the third lock mechanism 163 for locking and unlocking the casing 11 and the air treatment module 3 is not limited to the case 11 being reorganized.

In the operation process of the suction motor 12, dirty air can enter the cyclone chamber 301 downwards through the dirty air inlet 303 at the top of the front end of the dust cup 31 for cyclone separation, airflow separated from dirt can enter the cone 331 through the filter screen 332, then is discharged from the clean air outlet 304 on the cup cover 32 backwards along the air duct in the cone 331, and dirt such as dust separated in the cyclone chamber 301 can enter the dust collecting chamber 302 downwards through the dust falling port 305. Further, in order to secure the operational reliability of the suction motor 12, a first press seat 121 and a second press seat 122 may be provided at both axial ends of the suction motor 12, respectively. In addition, the hand-held 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.

Thus, according to the handheld vacuum cleaner 100 of the present embodiment, the air handling unit 3 can be integrally removed and assembled and disassembled once, and the removed air handling unit 3 has the dirty air inlet 303 and the clean air outlet 304 on its outer surface, and the air handling unit 3 is integrally a sealed unit, so that the problem of leakage of dust inside cannot occur during the removal of the air handling unit 3, and secondary pollution of dust cannot be caused easily. And because dirt cup 31 and bowl cover 32 in the air treatment subassembly 3 can split, thereby be convenient for carry out more thorough clearance to dirt cup 31 and bowl cover 32. In addition, the air duct of the handheld dust collector 100 is simple, occupies small space, is easy to operate and has high efficiency in action.

In addition, in the first embodiment, the dust 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 collecting chamber 302 is defined below the partition 312, and the dust falling port 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 collecting 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. Referring to fig. 19 to 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 is as follows: o is more than or equal to 20mm and less than or equal to 40mm. The length k1 of the ash drop port 305 satisfies: the width k2 of the ash falling port 305 is smaller than or equal to 10mm and smaller than or equal to 1 mm and smaller than or equal to 30mm, and the width k2 of the ash falling port is as follows: k2 is more than or equal to 30mm and less than or equal to 50mm.

Next, with reference to fig. 5 to 11, a hand-held cleaner 100 according to a second embodiment of the present disclosure is 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 prefilter assembly 2 includes the prefilter housing 21 and the filter assembly 22 disposed in the prefilter housing 21, the prefilter housing 21 is a sealed housing except for the inlet 2101 and the outlet 2102 on the outer surface thereof, the prefilter assembly 2 forms a part of the outer surface of the handheld cleaner 100, the disassembly of the prefilter assembly 2 does not cause the recombination of the housing 11, and the prefilter assembly 2 can be directly removed from the housing 11 only by opening the second locking mechanism 162, thereby the disassembly operation of the prefilter assembly 2 is convenient, the first cover 114 does not need to be opened and closed, and in the process of the disassembly of the prefilter assembly 2, the primary prefilter 221 and the secondary prefilter 222 are wrapped and taken out by the prefilter housing 21, so that the problem that a user directly grabs the primary prefilter 221 and the secondary prefilter 222 to move does not exist, and secondary pollution is effectively avoided. Note that the switching operation of the second latch mechanism 162 does not fall into the category of reorganization of the casing 11.

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

Next, with reference to fig. 12 to 18, a hand-held cleaner 100 according to a third embodiment of the present disclosure is described.

The third embodiment is substantially identical to the second embodiment in structure, and only the differences will be briefly described below.

In the third embodiment, the prefilter assembly 2 includes a prefilter housing 21, a primary prefilter 221 and a secondary prefilter 222 provided in the prefilter housing 21, an inner tube 24 provided in the prefilter housing 21, an outer tube 25 provided outside the prefilter housing 21, the second tube 13 communicating with an inlet 2101 of the prefilter housing 21, an inlet 2101 of the prefilter housing 21 communicating with an inlet of the inner tube 24, an outlet of the inner tube 24 communicating with the primary prefilter 221, the primary prefilter 221 communicating with the secondary prefilter 222, the secondary prefilter 222 communicating with an outlet 2102 of the prefilter housing 21, an outlet 2102 of the prefilter housing 21 communicating with an inlet of the outer tube 25, and an outlet of the outer tube 25 communicating with the first tube 14.

In the third embodiment, the dust cup 31 in the air processing assembly 3 includes a cylindrical partition 312, the cylindrical partition 312 defines the cyclone chamber 301 therein, the cylindrical partition 312 is provided with the dust collecting chamber 302 therein, the cylindrical partition 312 is provided with a protruding portion 3121 thereon, a part of the protruding portion 3121 is located in the cyclone chamber 301 as a supporting member 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: the difference o between the radius of the cyclone cavity 301 and the cone 331 is equal to or less than 60mm and equal to or less than 80mm, and the difference o is as follows: o is more than or equal to 15mm and less than or equal to 25mm.

As shown in fig. 16, in the third embodiment, the suction motor 12 may be disposed obliquely 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 may be 20 to 60 °, so that the center of gravity of the suction motor 12 during operation is smooth, noise is reduced, and grip feeling is improved.

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

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

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

The dimensional relationship of the air treatment assembly 3 may be as follows: the length i of the air intake port 3310 (length in the front-rear direction as shown in fig. 17) satisfies: the width f of the air inlet 3310 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 conditions: 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 conditions: the width k2 of the ash falling port 305 is smaller than or equal to 10mm and smaller than or equal to 1 mm and smaller than or equal to 30mm, and the width k2 of the ash falling port is as follows: the length g of the dirty air inlet 303 is 30mm < k2 > 50mm, where: 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 meets the following conditions: n is more than or equal to 20mm and less than or equal to 30mm.

Here, it should be understood that the "port" herein includes the ash drop port 305, the dirty air inlet 303, the air inlet 3310, etc. which are flattened into a planar structure and have their length direction and width direction perpendicular to each other. Furthermore, the features disclosed in the drawings of the present disclosure also belong to optional embodiments presented in the present disclosure.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those 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: many changes, modifications, substitutions and variations may 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 prefilter assembly disposed in the housing and in fluid communication upstream of the suction motor, a longitudinal axis of the prefilter assembly extending in a lateral direction;

an air handling assembly disposed in the housing and in fluid communication upstream of the prefilter assembly, the air handling assembly including a cyclone chamber having an axis extending transversely; the prefilter assembly is in fluid communication with the suction motor through a first conduit, the air treatment assembly is in fluid communication with the prefilter assembly through a second conduit, and a longitudinal axis of the first conduit is parallel to a longitudinal axis of the second conduit; the air treatment assembly comprises a dust cup and a cup cover, and the cyclone cavity and the dust collection cavity are defined by the dust cup.

2. The hand-held cleaner of claim 1 wherein the pre-filter assembly is removably mounted to the housing and wherein removal of the pre-filter assembly does not result in a reorganization of the air handling assembly and the housing.

3. The hand-held cleaner of claim 1 wherein the air treatment assembly is removably mounted to the housing and wherein removal of the air treatment assembly does not result in a reorganization of the pre-filter assembly and the housing.

4. A hand held cleaner according to claim 2 or 3, wherein the housing comprises: the air treatment device comprises a handle part and an installation part, wherein the installation part is positioned in front of the handle part and comprises an upper installation part and a lower installation part, the suction motor is arranged in the lower installation part, the prefilter assembly is detachably arranged on the upper installation part, and the air treatment assembly is detachably arranged between the front of the lower installation part and the lower side of the upper installation part.

5. The hand-held cleaner of claim 4 wherein the pre-filter assembly is in fluid communication with the suction motor via a first conduit, a lower end of the first conduit being disposed within the lower mounting portion above and in fluid communication with the suction motor, an upper end of the first conduit extending into fluid communication with the pre-filter assembly.

6. The hand-held cleaner of claim 5 wherein the longitudinal axis of the first conduit extends in a vertical direction or is parallel to the longitudinal axis of the handle portion.

7. The hand-held cleaner of claim 4 wherein the air handling assembly is in fluid communication with the pre-filter assembly via a second conduit, a lower end of the second conduit being disposed within the lower mounting portion and in fluid communication with the clean air outlet of the cyclone chamber, an upper end of the second conduit extending into fluid communication with the pre-filter assembly.

8. The hand-held cleaner of claim 7 wherein the longitudinal axis of the second conduit extends in a vertical direction or is parallel to the longitudinal axis of the handle portion.

9. The hand-held cleaner of claim 1 wherein the prefilter assembly includes: a prefilter cartridge having an inlet and an outlet on its exterior surface, and a filter assembly disposed within the prefilter cartridge and in fluid communication between the inlet and the outlet.

10. The hand-held cleaner of claim 1 wherein the prefilter assembly includes: a primary pre-filter and a secondary pre-filter, the primary pre-filter being in fluid communication upstream of the secondary pre-filter, the primary pre-filter having a larger filter diameter than the secondary pre-filter.

11. The hand-held cleaner of claim 1 wherein the housing includes: a handle portion and a mounting portion located in front of the handle portion, wherein, projected in a front-to-back direction, an axis of the suction motor intersects a longitudinal axis of the handle portion at an acute angle.

12. The hand-held vacuum cleaner of claim 11 wherein the axis of the suction motor intersects the longitudinal axis of the handle portion at an acute angle α that satisfies: alpha is more than or equal to 20 degrees and less than or equal to 60 degrees.

13. The hand-held cleaner of claim 1 wherein the housing includes: the suction motor comprises a handle part and a mounting part, wherein the mounting part is positioned in front of the handle part, the mounting part is projected along the front-to-back direction, the axis of the suction motor is coincident with the longitudinal axis of the handle part, and the axis of the suction motor extends along the vertical direction or extends obliquely from top to bottom along the front-to-back direction.