CN218528617U - Handheld dust collector and cyclone separation structure thereof - Google Patents

Abstract

The utility model relates to the technical field of dust collectors, in particular to a handheld dust collector and a cyclone separation structure thereof. A dust suction opening is formed in the cup body on one side of the dust cup; the cup cover is arranged at the lower part of the dust cup in an openable manner; the mesh enclosure is arranged inside the dust cup; a first cyclone cavity is formed outside the mesh enclosure, and a second cyclone cavity is formed inside the mesh enclosure; the sleeve is arranged in the dust cup and is positioned below the mesh enclosure; the inner cavities of the mesh enclosure and the sleeve are separated by a partition part; the multi-cone separating part is arranged in the mesh enclosure; the multi-cone separating part comprises a plurality of hollow cones; the tip of the cone faces downwards and is provided with a dust falling port which is communicated with the inner cavity of the sleeve through the partition part; an air inlet channel is arranged in the tangential direction of the cone, an air suction channel is arranged at the upper end of the cone, and the air suction channel extends for a certain distance into the cone; the outer side of the air suction channel is provided with a spiral air guide part for guiding air flow to selectively rotate in the cone, and the sleeve is connected with the bottom end of the mesh enclosure, so that the multi-cone separation part has extra space to prolong the length of the cone.

Description

Handheld dust collector and cyclone separation structure thereof

Technical Field

The utility model relates to the technical field of dust collectors, in particular to a handheld dust collector and a cyclone separation structure thereof.

Background

A hand-held cleaner, which is now a common home life tool in home life due to its small size and elegant appearance, sucks dust and other contaminants on the ground into a dust cup by using negative pressure generated by a motor installed inside the cleaner, separates the dust and the contaminants in the dust cup by a cyclone, and discharges fresh air.

However, due to the size of the handheld cleaner and the inconvenience of the user due to the heavy weight, the size of the cyclone separator and the fan of the handheld cleaner is limited, thereby affecting the separation efficiency of the cyclone separator.

The prior technical scheme has the following defects:

1. the dust and the filth in order better separation air current of secondary cyclone separation of present hand-held type dust catcher generally adoption, and the below of secondary cyclone can additionally set up a sleeve usually for collect the fine ash after secondary cyclone separates, nevertheless takes sleeve and secondary cyclone direct connection's mode can restrict secondary cyclone's length, and cyclone's length is longer, and cyclone's effect is better.

2. In the dust cup of a part of handheld dust collectors in the market, a mesh enclosure is arranged between primary cyclone separation and secondary cyclone separation, and can also play a role in filtering airflow entering a secondary cyclone classifier, but the effect is limited often, and the mesh enclosure can also interfere with the wind speed in the primary cyclone separation.

3. The secondary cyclone separator and the sleeve of the existing handheld dust collector are usually directly connected, a dust falling port of the secondary cyclone separator directly leads to the inside of the sleeve, the sleeve and the outside are not sealed, the structure is not beneficial to improving the separation efficiency of the cyclone separator, and even fine dust in the sleeve can be curled by a vortex and can be driven to float.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a separation efficiency is better, moves more stably, the hand-held type dust catcher and the whirlwind separation structure of the equipment of being convenient for.

The utility model aims at realizing the following steps:

a cyclone separating structure of a hand-held dust collector comprises

A dust cup, wherein one side of the cup body is provided with a dust suction port;

the cup cover is arranged at the lower part of the dust cup in an openable manner;

the mesh enclosure is arranged inside the dust cup; a first cyclone cavity is formed outside the mesh enclosure, and a second cyclone cavity is formed inside the mesh enclosure;

the sleeve is arranged in the dust cup and is positioned below the mesh enclosure; the inner cavities of the mesh enclosure and the sleeve are separated by a partition part; the lower port of the sleeve abuts against the inner wall of the cup cover;

the multi-cone separating part is arranged in the mesh enclosure; the multi-cone separating part comprises a plurality of hollow cones; the tip end of the cone faces downwards and is provided with a dust falling port, and the dust falling port is communicated with the inner cavity of the sleeve through the partition part; an air inlet channel is arranged in the tangential direction of the cone, and an air suction channel is arranged at the upper end of the cone.

Preferably, the upper part of the dust cup is provided with a sealing cover component; a plurality of hole sites are arranged in the middle of the sealing cover component and correspond to the cone; the edge of the hole position extends towards the inner part of the cone to form the air suction channel.

Preferably, a spiral air guide part is arranged around the periphery of the air suction channel, and the outer diameter of the spiral air guide part is matched with the inner diameter of the cone; the high point of the inclined plane of the spiral air guiding part is attached to the sealing cover component, and the direction of the inclined plane where the high point of the spiral air guiding part is located is consistent with the direction of the air inlet channel; the low point of the spiral inclined plane of the spiral air guiding part does not exceed the port of the air suction channel.

Preferably, the cone comprises a single air inlet channel cone and a multi-air inlet channel cone;

the single air inlet channel cones are annularly arranged, and the single air inlet channel cones are attached to each other in pairs to form a circular ring which is arranged on the outer side of the multiple air inlet channel cones;

the spiral air guide part surrounds the periphery of the air suction channel arranged in the single air inlet channel cone.

Preferably, the upper end of the sleeve is turned outwards to form the spoiler.

Preferably, the outer side of the mesh enclosure is provided with an air guide duct and an air guide inclined plane.

Preferably, the partition part comprises a first ash blocking plate and a second ash blocking plate; the second dust baffle has certain elasticity;

the second ash blocking plate is arranged in a groove in the first ash blocking plate;

the first dust baffle is provided with a plurality of first through holes, the second dust baffle is provided with a plurality of second through holes, and the positions of the first through holes and the positions of the second through holes are in one-to-one correspondence;

the dust falling port abuts against the second dust baffle plate, and the dust falling port, the first through hole and the second through hole are located on the same axis to form a passage.

Preferably, the center of the cup cover is inwards recessed to form a recessed part, and the recessed part is matched with the shape of the ash outlet of the sleeve;

when the cup cover is closed, the concave part is placed in the ash outlet.

Preferably, a sealing part is sleeved outside the ash outlet;

when the cup cover is closed, the sealing part is abutted against the inner side of the cup cover.

A handheld dust collector comprises a dust collector shell, wherein a fan and the cyclone separation structure of the handheld dust collector are arranged in the dust collector shell; and an impeller of the fan faces the dust cup, a negative pressure area is formed in the upper end of the sealing cover assembly, filter sea handkerchief is arranged in the negative pressure area, and the hole position is covered by the filter sea handkerchief.

Compared with the prior art, the utility model has the advantages that:

1. the sleeve is connected to the bottom end of the mesh enclosure in the dust cup and is not directly connected with the multi-cone separating part, so that the multi-cone separating part has an extra space to prolong the cone, and the longer the cone is, the better the separating effect of the cyclone separator is.

2. The edge of the joint of the sleeve and the mesh enclosure is turned outwards to form a spoiler, the spoiler can push downward airflow to the inner wall of the dust cup, so that the airflow can be retained in the one-level separation part for a longer time, meanwhile, a coarse ash collecting cavity is formed below the spoiler, dust separated from the one-level cyclone separation falls back into the coarse ash collecting cavity, meanwhile, due to the blocking of the spoiler, the dust in the coarse ash collecting cavity is prevented from being rolled up by cyclone again, and the effect of the cyclone separator is improved.

3. The utility model discloses the air current can receive the promotion of spiral wind-guiding portion after getting into in the cone, leads the air current to rotate on the height different with inlet air channel to the air current of avoiding earlier getting into the cone is after rotatory the round, and the air current of going into the cone after with mutual interference, forms the turbulent flow, thereby destroys the rotatory state of the inside air current of cone.

4. The utility model discloses a be provided with wind-guiding wind channel and wind-guiding inclined plane on the screen panel, the wind-guiding wind channel can guide the air current tangential and get into the dirt cup to it is rotatory to make the air current encircle the screen panel, and the wind-guiding inclined plane can lead the lower floor with the air current that turns over certain angle in the dirt cup, makes its and the air current separation that newly gets into the dirt cup, avoids producing the turbulent flow. The airflow can enter the secondary cyclone separation after the airflow remains in the primary cyclone separation, so that the cyclone separation effect of the dust collector is improved.

5. Be provided with separation portion between the dirt mouth that falls of sleeve and many cones separation portion, separation portion can separate sleeve and many cones separation portion, the independent fine dust chamber of shaping in sleeve is made to the cooperation of sleeve and separation portion simultaneously, thereby independent fine dust chamber can prevent that fine dust from receiving the book of cyclone to mix in the air current again, influence separation efficiency, and structurally, the passageway UNICOM that forms in the separation portion falls dirt mouth and fine dust chamber, can avoid the swirl afterbody can extend the dust particle surface of catching in the sleeve, and smuggle one of them some dust particle escape secretly.

6. The utility model provides a hand-held type dust catcher and whirlwind separation structure thereof, sleeve joint are in the bottom of screen panel, and many cones separation portion set up inside the screen panel, and the structural relationship between each subassembly is simple, is convenient for accomplish the inside whirlwind separation mechanism's of dirt cup equipment of hand-held type dust catcher.

Drawings

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is a top view of the end cap assembly and filter hypaea of the present invention.

Fig. 4 is a bottom view of the end cap assembly, the sealing ring and the mesh enclosure of the present invention.

Fig. 5 is a schematic view of the cross-sectional top view and the airflow direction of the present invention.

Fig. 6 is an enlarged view of a in fig. 2.

Fig. 7 is an enlarged view of B in fig. 2.

Fig. 8 is an enlarged view of C in fig. 5.

Reference numerals: 1-a dust cup; 11-a dust suction port; 12-coarse ash collection chamber; 13-a first cyclone chamber; 14-a second cyclone chamber;

2-a multi-cone separation section; 21-cone; 211-single inlet channel cone; 212-multiple inlet channel cone; 22-dust falling port; 23-air inlet channel;

3-a mesh enclosure; 31-an air guide duct; 32-wind guide inclined plane; 33-an air suction channel; 34-a spiral wind guide part; 35-an end cap assembly; 36-hole site; 37-a sealing ring;

4-a sleeve; 41-ash outlet; 42-a seal; 43-a spoiler; 44-a soot chamber;

5-a cup cover; 51-a recess;

6-a partition part; 61-ash blocking plate I; 611, a first through hole; 612-grooves; 62-ash blocking board II; 621-through hole two;

7-a pump fan; 8-filtered HEPA; 9-a dust collection channel; 10-cleaner housing.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

The first embodiment is as follows:

as shown in Figs. 1 to 8, a cyclone separating structure of a hand-held cleaner comprises

A dust cup 1 is provided with a dust suction opening 11 on one side of a cup body, when the dust cup 1 is connected to a dust collector shell 10, the dust suction opening 11 is aligned with and tightly connected with a dust suction channel 9, and dust in the dust suction channel 9 enters the dust cup 1 through the dust suction opening 11.

The cup cover 5 is arranged at the lower part of the dust cup 1 and can be opened. In this embodiment, the lid 5 is hinged to the lower end of the dirt cup 1.

The mesh enclosure 3 is arranged inside the dust cup 1, a first cyclone cavity 13 is formed in the area between the mesh enclosure 3 and the dust cup 1, and a second cyclone cavity 14 is formed inside the mesh enclosure 3. When the airflow mixed with dust and dirt enters the dust cup 1 through the dust collection passage 9, the airflow will perform a primary cyclone separation in the first cyclone chamber 13. After the separation is completed, the heavier mass of dust and dirt will separate from the airflow and accumulate in the coarse ash collection chamber 12. The net cover 3 can ensure that no overlarge dirt enters the second cyclone chamber 14, and the situation that the multi-cone separating part 2 cannot work normally due to the blockage of the dirt on the multi-cone separating part 2, and the separation efficiency of the cyclone separator is influenced is avoided.

The outside of screen panel 3 is connected with pump fan 7, the negative pressure that pump fan 7 created sends the dust into dirt cup 1 via dust absorption passageway 9, through one-level separation and second grade separation in order to realize better dust removal effect, and the dust that fails to be successfully separated or rolled up again by the cyclone leaves multi-cone separation portion 2 through induced draft passageway 33 when, can be set up the filtration handkerchief 8 interception between pump fan 7 and screen panel 3, in order to guarantee the clean air of dust catcher exhaust, can not cause secondary pollution to the environment, influence separation efficiency, improve user experience degree.

The sleeve 4 is arranged in the dust cup 1, the sleeve 4 is clamped at the bottom end of the mesh enclosure 3, so that more space is reserved in the second cyclone cavity 14 to prolong the cone 21, and for the cyclone separator, the longer the length of the cone 21 is, the number of rotation turns of dust and airflow in the cone 21 can be increased, so that the dust and the airflow are separated more thoroughly, and the separation efficiency of the cyclone separator is higher.

The inner cavities of the net cover 3 and the sleeve 4 are separated by a partition part 6; the lower port of the sleeve 4 is abutted against the inner wall of the cup cover 5; when the cup cover 5 of the dust cup 1 is not opened, the dust outlet 41 of the sleeve 4 abuts against the cup cover 5, so that a fine dust cavity 44 capable of containing dust is formed in the sleeve 4.

The multi-cone separation part 2 is arranged in the second cyclone cavity 14 in the net cover 3; the multi-cone separating part 2 comprises a plurality of hollow cones 21, in the embodiment, the multi-cone separating part 2 is provided with 9 cones 21, and the larger the total area of the cross sections of the cones 21 is, the better the cyclone separation effect of the dust collector is. The tip of the cone 21 faces downwards and is provided with a dust falling port 22, the dust falling port 22 of the cone 21 is communicated with the sleeve 4, the dust falling port 22 is communicated with the inner cavity of the sleeve 4 through the partition part 6, and dust after secondary separation can be directly discharged into the sleeve 4 through the dust falling port 22 and collected in a fine dust cavity 44 in the sleeve 4.

An air inlet channel 23 is arranged on the tangential direction of the cone 21, and an air suction channel 33 is arranged in the cone 21. The air intake passage 23 allows the airflow to enter the cone 21 tangentially, thereby making it easier for the airflow to rotate while being attached to the inner wall of the cone 21, thus performing cyclone separation on the airflow, and the separated airflow will leave the cone 21 through the air suction passage 33 and the dust will fall toward the dust drop port 22.

The top ends of the cones 21 positioned on the upper and outer rings of the multi-cone separating part 2 are attached to each other two by two, and a triangular-like area is formed between each two adjacent cones 21 and the mesh cover 3. Since the centrifugal force generated by the airflow is larger when the airflow velocity is higher, the radius of rotation is larger. When the airflow enters the second cyclone chamber 14 in the mesh enclosure 3 from the first cyclone chamber 13, the airflow is at the maximum speed in the current state, and when the airflow fails to enter the air inlet channel 23, the outer wall of the air inlet channel 23 facing one side of the mesh enclosure 3 can stably guide the airflow to the opening of the air inlet channel 23 of the adjacent cone 21, so that the energy loss caused by collision between the airflow and the outer wall of the cone 21 is reduced, the speed of the airflow is maintained, and the airflow is more easily brought into a cyclone separation state in the subsequent flow.

If the speed of the air flow is insufficient, the turning radius is reduced and the air cannot enter the air intake passage 23. Because the top ends of the outer ring cones 21 are attached to each other pairwise, the air flow with insufficient speed is blocked by the top ends of the cones 21, cannot rotate on the upper layer of the secondary separation cavity 14, and is accumulated on one side of the air inlet channel 23 facing the center, and an included angle is formed between the top ends of the adjacent cones 21, so that the air flow with slow flow speed is prevented from contacting with the air flow with fast flow speed to form turbulent flow, and the interference of the air flow with fast flow speed is avoided.

The airflow in the included angle formed between the top ends of the adjacent cones 21 falls along the cones 21 and enters the inner ring of the multi-cone separating part 2 in the gap at the bottom end of the multi-cone separating part 2.

The manner or structure illustrated in the embodiments is one of many alternative embodiments of the present invention, and the present invention is not limited thereto, and the present invention includes but is not limited to the embodiments illustrated.

As shown in fig. 1 to 4, a cover assembly 35 is disposed at an upper portion of the dirt cup 1, and an upper end of the net cover 3 is connected to the cover assembly 35.

A plurality of hole sites 36 are arranged in the middle of the cover assembly 35, the position of each hole site 36 corresponds to one cone 21, each cone 21 corresponds to one hole site 36, and the cone 21 and the hole sites 36 are coaxial. The edge of the hole 36 extends a certain distance into the cone 21 to form an air suction channel 33, so that the air can reach the pipe orifice of the air suction channel 33 after rotating at least for a certain time in the cone 21, thereby ensuring the cyclone separation efficiency in the cone 21, but the length of the air suction channel 33 cannot be too long, and the pipe orifice of the overlong air suction channel 33 can be close to the dust falling port 22, so that the dust separated by the cyclone is blown up again by the air at the pipe orifice of the air suction channel 33 and brought into the air suction channel 33, thereby affecting the cyclone separation efficiency.

As shown in fig. 1-5, a spiral wind guiding portion 34 is disposed around the periphery of the wind suction channel 33, and the outer diameter of the spiral wind guiding portion 34 is adapted to the inner diameter of the cone 21, so that the spiral wind guiding portion 34 can be attached to the inner wall of the cone 21.

The spiral wind guide part 34 is formed on the upper cover assembly 35 and is integrally formed with the wind suction channel 33, thereby reducing the trouble in processing and the link in assembling, and improving the manufacturing speed and the assembling speed. Because the cones 21 are connected in pairs, if one cone 21 cannot be successfully connected with the spiral air guiding part 34, the whole workpiece is wasted. The integral forming also improves the precision of the spiral air guiding part 34, ensures that the spiral air guiding part 34 and the cone 21 can be accurately butted, and avoids wasting materials.

The high point of the inclined plane of the spiral air guiding part 34 is attached to the sealing cover component 35, the top end of the air inlet channel 23 is also attached to the sealing cover component 35, the inclined plane where the high point of the spiral air guiding part 34 is located is a section of inclined straight inclined plane, the straight inclined plane is connected to the tail end of the air inlet channel 23, and the direction of the straight inclined plane is consistent with that of the air inlet channel 23.

When the airflow enters the cone 21 through the air inlet channel 23 in the second cyclone chamber 14, the straight inclined plane of the high point of the spiral air guiding part 34 enables the airflow entering the cone 21 from the air inlet channel 23 to enter the cone 21 tangentially, which facilitates the airflow to form a cyclone rotating around the inner wall of the cone 21 in the cone 21, and accelerates the formation of cyclone separation. Meanwhile, the interference of the airflow entering the cone 21 when the airflow direction is changed due to the influence of the cone 21 and the wall surface of the spiral air guiding part 34 is reduced, and the generation of turbulence is avoided, so that the cone 21 is elongated to form a cyclone separation state.

The low point of the spiral inclined plane of the spiral air guiding part 34 does not exceed the port of the air suction channel 33, and the distance between the low point and the high point of the spiral inclined plane of the spiral air guiding part 34 is slightly larger than the height of the air inlet channel 23. The spiral air guiding part 34 is used for guiding the airflow to rotate in the cone 21 to accelerate the formation of a cyclone separation state, the spiral inclined surface of the spiral air guiding part 34 can also push the airflow entering the cone 21 to rotate at a lower position, the airflow guided by the spiral air guiding part 34 and the airflow newly entering from the air inlet channel 23 rotate at different heights in the cone 21, so that the mutual influence between the airflows is reduced, the turbulence in the airflow is prevented from being generated, the rotation state of the airflow inside the cone 21 is prevented from being damaged, and the cyclone separation efficiency is prevented from being influenced.

The spiral air guiding part 34 is internally of a hollow structure, so that materials required for manufacturing can be reduced, the wall thickness is reduced, the forming of a product is facilitated, the deformation of the spiral air guiding part 34 caused by internal stress is avoided, the connection between the spiral air guiding part 35 and the cone 21 is influenced during assembly, meanwhile, the air flow is easy to generate turbulent flow, and the formation of cyclone separation is reduced.

As shown in fig. 2-5, the cone 21 in the multi-cone separating part 2 is divided into a single air inlet channel cone 211 and a multi-air inlet channel cone 212, wherein only one air inlet channel 23 is opened on the single air inlet channel cone 211, and the multi-air inlet channel cone 212 is provided with a plurality of air inlet channels 23.

The single air inlet channel cones 211 are annularly arranged, every two single air inlet channel cones 211 are attached together, so that the top ends of the single air inlet channel cones 211 are connected with each other, eight single air inlet channel cones 211 are arranged outside the multiple air inlet channel cones 212 in a surrounding mode, and the top ends of the eight single air inlet channel cones 211 are connected into a whole.

When the airflow carrying dust passes through the mesh enclosure 3 and enters the second cyclone chamber 14 through the first cyclone chamber 13, the airflow preferentially contacts with the cone body 211 of the single air inlet channel, and along with the flow of the airflow, the airflow carrying dust is carried into the cone body 21 through the air inlet channel 23, and the second round of cyclone separation is carried out in the cone body 21.

In order to increase the total cross-sectional area of the cone 21 and improve the cyclone separation effect, the surfaces of the single air inlet channel cones 211 are attached together two by two, the single air inlet channel cone 211 connected into a whole is annular, and the inner side of the single air inlet channel cone 211 is provided with a multi-air inlet channel cone 212.

The multi-inlet air channel cone 212 is different from the single-inlet air channel cone 211 in that more than one inlet air channel 23 is arranged at the top end of the multi-inlet air channel cone 212, and because the multi-inlet air channel cone 212 is located on the inner side of the ring surrounded by the single-inlet air channel cone 211, after the airflow in the second cyclone chamber 14 rotates for multiple circles in the mesh enclosure 3 or enters the second cyclone chamber 14 after rotating for multiple circles in the first cyclone chamber 13, the gap between the conical parts at the bottom end of the single-inlet air channel cone 211 enters the ring surrounded by the single-inlet air channel cone 211, so that the multi-inlet air channel cone 212 is provided with the plurality of inlet air channels 23, and the airflow coming from different directions can enter the multi-inlet air channel cone 212 through the inlet air channels 23.

In the present embodiment, the multi-inlet cone 212 is provided with three inlet channels 23, and the angle between each inlet channel 23 is 120 °.

The spiral air guiding part 34 is arranged on the outer side of the air suction channel 33 corresponding to the single air inlet channel cone 211, the cross section of the spiral air guiding part 34 is circular, and the diameter of the spiral air guiding part 34 is matched with the inner diameter of the single air inlet channel cone 211, so that after the spiral air guiding part 34 can be placed in the single air inlet channel cone 211, the outer wall of the spiral air guiding part 34 is attached to the inner wall of the single air inlet channel cone 211.

As shown in fig. 1 and 2, the connection between the sleeve 4 and the mesh enclosure 3 is formed by turning the spoiler 43 outward, and the spoiler 43 and the sleeve 4 are integrally formed to facilitate the assembly of the spoiler 43 and the sleeve 4 into the dirt cup 1. The spoiler 43 can push the airflow to the inner wall of the dust cup 1, so that the airflow can be retained in the dust cup 1 for a longer time, and a part of the airflow which is about to leave the first-stage separation can rotate in the dust cup 1 again, thereby increasing the separation efficiency.

An air suction channel 33 penetrates through the cone 21 of the multi-cone separating part 2, and the air suction channel 33 is arranged on the net cover 3 and extends into the cone 21 for a certain length.

If the suction channel 33 is too close to the dust drop port 22 of the cone 21, it is easier to suck up the trapped dust particles, and the insertion depth is too large, which causes increased friction between the swirling flow and the outer wall of the suction channel 33, thereby increasing the pressure loss. However, if the insertion depth of the air suction channel 33 is too small or even not too large, the inner swirling flow will be unstable, and the air flow will be short-circuited easily, thereby reducing the separation efficiency.

As shown in fig. 1, 4 and 5, an air guiding duct 31 and an air guiding slope 32 are provided outside the mesh enclosure 3.

After the dust cup 1 is assembled to the cleaner housing 10, the dust suction passage 9 is opened to the inside of the dust cup 1, and the position of the mesh cover 3 needs to be adjusted to align the air guide duct 31 with the dust suction passage 9. The air flow entering the dust cup 1 through the dust collection channel 9 is ensured to enter the air guide duct 31 completely, guided by the air guide duct 31 and tangentially enter the dust cup 1, so that the air flow can rotate in the dust cup 1 at the upper half part of the mesh enclosure 3, and the function of primary cyclone separation of the dust cup 1 is realized.

When the airflow rotates a certain angle in the dust cup 1, the airflow is pushed downward by the air guide slope 32, so that the airflow rotates at the lower half part of the dust screen 3. Meanwhile, the air guiding inclined plane 32 can separate the air flow which rotates in the dust cup 1 for a period of time from the new air flow entering from the dust suction channel 9, so that the air flows of the two parts cannot interfere with each other, excessive turbulence is avoided, and the efficiency and the effect of cyclone separation are ensured.

As shown in fig. 2, a partition 6 is provided between the dust drop port 22 and the sleeve 4.

The partition 6 can separate the space where the multi-cone separating part 2 is located from the fine ash chamber 44 in the sleeve 4, so that the fine ash chamber 44 becomes a relatively closed space.

Structurally, the closed fine dust chamber 44 also provides better separation efficiency than the open sleeve 4 because with the open sleeve 4 configuration, the vortex tail extends to the surface of the trapped dust particles in the sleeve 4 and entrains some of them to escape and carry the dust away through the suction channel 33, thereby affecting the separation.

This can be avoided by forming a separate closed space in the sleeve 4 by the partition 6.

As shown in fig. 1, 2, and 4, the partition 6 includes a first dust barrier 61 and a second dust barrier 62.

The second ash blocking plate 62 is arranged in a groove 612 on the first ash blocking plate 61, the diameter of the groove 612 is matched with that of the second ash blocking plate 62, and the groove 612 can play a role in positioning and limiting, so that the second ash blocking plate 62 can be stably arranged in the first ash blocking plate 61.

The first dust baffle 61 is provided with a plurality of first through holes 611, and the second dust baffle 62 is provided with a plurality of second through holes 621. The number of the first through holes 611 and the second through holes 621 is the same as that of the cones 21 of the multi-cone separating part 2, and the number of the first through holes 611 and the number of the second through holes 621 are 9 respectively in the embodiment.

The first through hole 611 corresponds to the second through hole 621 in position one by one, the dust falling port 22 abuts against the second dust baffle 62, and the dust falling port 22, the first through hole 611 and the second through hole 621 are located on the same axis to form a passage. Due to the limiting effect of the groove 612, the relative position between the first dust baffle 61 and the second dust baffle 62 is fixed, so that the first through hole 611 and the second through hole 621 are aligned more easily.

When the first through hole 611 and the second through hole 621 are aligned, a cylindrical passage is formed to be connected to the dust drop port 22, and dust separated in the cone 21 is discharged from the dust drop port 22 and enters the fine dust chamber 44 in the sleeve 4 through the cylindrical passage.

The second dust baffle 62 has certain elasticity.

The cylindrical passage helps reduce the pressure drop of the gas stream and increases the separation efficiency.

As shown in fig. 2 and 5, the center of the cup cover 5 is recessed inwards to form a recessed portion 51, the recessed portion 51 is matched with the shape of the ash outlet 41 of the sleeve 4, when the cup cover 5 is closed, the recessed portion 51 is placed in the ash outlet 41, and the recessed portion 51 can better close the ash outlet 41 of the sleeve 4, so that a closed fine ash cavity 44 is formed in the sleeve 4 for collecting the dust separated by the multi-cone separating part 2.

As shown in fig. 2 and 5, the sealing portion 42 is sleeved outside the ash outlet 41, when the cup cover 5 is closed, the sealing portion 42 abuts against the inner side of the cup cover 5, and the sealing portion 42 can ensure that the fine ash cavity 44 in the sleeve 4 is separated from the coarse ash collecting cavity 12 on the outer side, so that the fine ash cavity 44 is not communicated with the coarse ash collecting cavity 12, and the turbulence of the air flow is avoided.

The joint portion of sealing 42 and bowl cover 5 is the flexible edge, and when sealing 42 contacted with bowl cover 5, the edge of sealing 42 received the extrusion and the deformation to more inseparable laminating provides better sealed effect on bowl cover 5.

The frictional force generated between the sealing portion 42 and the cup cover 5 can also fasten the connection between the cup cover 5 and the dirt cup 1, so that when too much dirt is contained in the dirt cup 1, the cup cover 5 cannot be separated from the dirt cup 1 to cause the escape of the dirt.

As shown in fig. 1 to 4, a handheld vacuum cleaner includes a cleaner housing 10, and is characterized in that a fan 7 and the above-mentioned cyclone separation structure of the handheld vacuum cleaner are provided in the cleaner housing 10.

The impeller of the fan 7 faces the dust cup 1, and a sealing ring 37 is arranged in the upper end of the sealing cover assembly 35, so that a negative pressure area is formed between the fan 7 and the sealing cover assembly 35, a filtering hypaea 8 is arranged in the negative pressure area, and the filtering hypaea 8 covers the hole position 36.

The second embodiment:

the present embodiment is substantially the same as the first embodiment, except that the mesh enclosure 3 and the cover unit 35 are integrally formed, thereby reducing the number of assembling steps, ensuring the accuracy, and improving the cyclone separation efficiency.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (10)

1. A cyclone separation structure of a handheld dust collector is characterized by comprising

A dust cup (1), wherein one side of the cup body is provided with a dust suction port (11);

the cup cover (5) is arranged at the lower part of the dust cup (1) in an openable manner;

the net cover (3) is arranged inside the dust cup (1); a first cyclone cavity (13) is formed outside the net cover (3), and a second cyclone cavity (14) is formed inside the net cover (3);

the sleeve (4) is arranged inside the dust cup (1) and is positioned below the mesh enclosure (3); the inner cavities of the mesh enclosure (3) and the sleeve (4) are separated by a partition part (6); the lower port of the sleeve (4) is abutted against the inner wall of the cup cover (5);

a multi-cone separating part (2) arranged in the mesh enclosure (3); the multi-cone separating part (2) comprises a plurality of hollow cones (21); the tip end of the cone (21) faces downwards and is provided with a dust falling port (22), and the dust falling port (22) is communicated with the inner cavity of the sleeve (4) through the partition part (6); an air inlet channel (23) is arranged in the tangential direction of the cone (21), and an air suction channel (33) is arranged in the cone (21).

2. The cyclone separating structure of a hand-held cleaner according to claim 1, wherein the upper portion of the dirt cup (1) is provided with a cover assembly (35); a plurality of hole sites (36) are arranged in the middle of the cover sealing component (35), and the hole sites (36) correspond to the cone body (21); the edge of the hole position (36) extends towards the inner part of the cone (21) to form the suction channel (33).

3. The cyclone separation structure of a hand-held cleaner according to claim 2, wherein a spiral wind guide part (34) is provided around the periphery of the wind suction channel (33), and the outer diameter of the spiral wind guide part (34) is adapted to the inner diameter of the cone (21); the high point of the inclined plane of the spiral air guiding part (34) is attached to the cover assembly (35), and the direction of the inclined plane of the high point of the spiral air guiding part (34) is consistent with the direction of the air inlet channel (23); the low point of the inclined plane of the spiral air guiding part (34) does not exceed the port of the air suction channel (33).

4. The cyclone separating structure of a hand-held cleaner as claimed in claim 1, wherein the cone (21) comprises a single air inlet passage cone (211) and a multi air inlet passage cone (212);

the single air inlet channel cones (211) are arranged annularly, and the single air inlet channel cones (211) are attached to each other two by two to form a circular ring and are arranged on the outer side of the multi-air inlet channel cone (212);

the spiral air guiding part (34) surrounds the periphery side of the air suction channel (33) arranged in the single air inlet channel cone (211).

5. A cyclone separating structure of a hand-held cleaner according to claim 1, wherein the upper end of the sleeve (4) is formed to be turned inside out as a spoiler (43).

6. The cyclone separation structure of a handheld vacuum cleaner according to claim 5, wherein the outer side of the mesh enclosure (3) is provided with a wind guide duct (31) and a wind guide inclined surface (32).

7. The cyclone separating structure of a hand-held cleaner according to claim 1, wherein the partition (6) comprises a first dust baffle (61) and a second dust baffle (62); the second ash blocking plate (62) has certain elasticity;

the second ash blocking plate (62) is arranged in a groove (612) on the first ash blocking plate (61);

a plurality of first through holes (611) are formed in the first ash blocking plate (61), a plurality of second through holes (621) are formed in the second ash blocking plate (62), and the positions of the first through holes (611) and the second through holes (621) are in one-to-one correspondence;

the dust falling port (22) abuts against the second dust baffle (62), and the dust falling port (22), the first through hole (611) and the second through hole (621) are located on the same axis to form a passage.

8. The cyclone separating structure of the handheld vacuum cleaner as claimed in claim 1, wherein the center of the cup cover (5) is recessed inwards to form a recess (51), and the recess (51) is matched with the shape of the ash outlet (41) of the sleeve (4);

when the cup cover (5) is closed, the concave part (51) is placed in the ash outlet (41).

9. The cyclone separation structure of a hand-held cleaner according to claim 8, wherein a sealing part (42) is sleeved outside the dust outlet (41);

when the cup cover (5) is closed, the sealing part (42) is abutted against the inner side of the cup cover (5).

10. A hand-held cleaner comprising a cleaner housing (10), characterised in that a fan (7) and a cyclonic separating structure of the hand-held cleaner as claimed in claims 2-9 are provided in the cleaner housing; the impeller of the fan (7) faces the dust cup (1), a negative pressure area is formed in the upper end of the sealing cover assembly (35), a filtering sea handkerchief (8) is arranged in the negative pressure area, and the hole position (36) is covered by the filtering sea handkerchief (8).

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