WO2021189778A1

WO2021189778A1 - Dust collector assembly and vacuum cleaner

Info

Publication number: WO2021189778A1
Application number: PCT/CN2020/114223
Authority: WO
Inventors: 彭劲松; 梁玉
Original assignee: 苏州市伟克斯电器有限公司
Priority date: 2020-03-24
Filing date: 2020-09-09
Publication date: 2021-09-30
Also published as: CN111227711A

Abstract

A dust collector assembly (10) and a vacuum cleaner (100). The dust collector assembly (10) comprises: a dust collector (11), used for collecting dust; a dust collector cover (13), mounted at the bottom of the dust collector (11); an air inlet pipe (14), communicated with the inner cavity of the dust collector (11) and used for introducing a dust-containing air flow; a microporous filter (17), used for filtering the dust-containing air flow and guiding the filtered air to flow towards the axis direction of the dust collector (11); a primary cyclone device, used for causing the dust-containing air flow introduced from the air inlet pipe (14) to rotate around the microporous filter (17); a secondary cyclone device, provided downstream of the microporous filter (17) and comprising at least two cyclone cones, each cyclone cone comprising an outer cone (21) and an inner pipe (22), and the cyclone cone being used for receiving the air flowing out of the microporous filter (17) and causing the air flow to rotate in the cyclone cone to form a secondary cyclone; and an air inlet filter (28), comprising folded filter paper, located downstream of the secondary cyclone device, and used for receiving the air flowing out of the secondary cyclone device and transmitting the air outside the dust collector assembly (10).

Description

Dust bucket assembly and vacuum cleaner

Technical field

The invention belongs to the field of vacuum cleaners, and in particular relates to a dust collecting bucket assembly and a vacuum cleaner.

Background technique

With the development of lithium battery technology, rechargeable vacuum cleaners similar to those disclosed in CN204016180U have become increasingly popular. This type of vacuum cleaner generally uses a dust collection bucket assembly to replace the traditional dust collection bag. The specific structure of the dust collection bucket assembly is: a cyclone separation device is installed in the dust collection bucket; and a filter device is located on the upper part of the cyclone separation device. The upstream of the electric fan assembly, so the filter device is also called the air inlet filter. The air inlet filter of the CN204016180U vacuum cleaner is surrounded by a dust collecting bucket assembly and an electric fan assembly, and is hidden inside the vacuum cleaner.

The dust and gas separation capability of a single cyclone separation device (also called a cyclone) is not strong. Although it can separate part of the dust from the airflow and let it fall to the bottom of the dust bucket, there will still be more Dust can pass through the cyclone separator to reach the air inlet filter. Therefore, the air inlet filter is more likely to be blocked by dust, which leads to a sharp drop in the dust collection capacity of the vacuum cleaner.

In addition, because the air inlet filter is surrounded by other more complicated components, the parts surrounding the air inlet filter must be removed before the air inlet filter can be seen and cleaned, which makes the cleaning of the air inlet filter inconvenient.

Summary of the invention

The present invention is developed to solve the problems of insufficient dust and gas separation ability of the dust collecting bucket assembly of the above-mentioned vacuum cleaner and inconvenience of filtering and cleaning the inlet air, and aims to provide a dust collecting bucket assembly and a vacuum cleaner.

The present invention provides a dust collecting bucket assembly, which is used for collecting dust on a vacuum cleaner, and has such characteristics, including: a dust bucket for collecting dust; a dust bucket cover installed at the bottom of the dust bucket; and an air inlet pipe , Set in the front of the dust bucket and communicated with the inner cavity of the dust bucket, used to introduce dust-containing airflow; microporous filter, set in the dust bucket, with multiple micropores, used to filter the dust-containing airflow, and Guide the filtered air to flow in the direction of the axis of the dust bucket; the primary cyclone is used to promote the dust-containing air flow introduced from the air inlet pipe to rotate around the microporous filter; the secondary cyclone is located downstream of the microporous filter, Contains at least two cyclone cones, the cyclone cone is used to receive the air flowing out of the microporous filter, and cause the airflow to rotate in the cyclone cone to form a secondary cyclone; and the inlet filter, located downstream of the secondary cyclone, used To receive the air flowing out of the secondary cyclone and transmit the air to the outside of the dust collecting bucket assembly, it includes folded filter paper, in which the cyclone cones are arranged in the direction surrounding the air inlet filter, and the air inlet filter is hollow with the top It is provided with an opening, the bottom is closed, and the bottom of the dust bucket cover has an opening through which the air inlet filter can be extracted from the dust bucket and can also be installed back into the dust bucket through the opening.

In the dust collecting bucket assembly provided by the present invention, it may also have such a feature: wherein a part of the dust bucket cover is rotatably installed on the dust bucket, and the dust bucket is provided with a lock and release mechanism, which makes the dust bucket The cover can be opened or closed relative to the dust bucket.

In the dust collecting bucket assembly provided by the present invention, it may also have the feature that the bottom of the air inlet filter is sealed and matched with the secondary cyclone.

The present invention provides a dust collecting bucket assembly, which is used for collecting dust on a vacuum cleaner, and has such characteristics, including: a dust bucket for collecting dust; a dust bucket cover installed at the bottom of the dust bucket; and an air inlet pipe , Set in the front of the dust bucket and communicated with the inner cavity of the dust bucket, used to introduce dust-containing airflow; microporous filter, set in the dust bucket, with multiple micropores, used to filter the dust-containing airflow, and Guide the filtered air to flow in the direction of the axis of the dust bucket; the primary cyclone is used to promote the dust-containing air flow introduced from the air inlet pipe to rotate around the microporous filter; the secondary cyclone is located downstream of the microporous filter, Contains a plurality of cyclone cones, the cyclone cone is used to receive the air flowing out of the microporous filter, and promote the airflow to rotate in the cyclone cone to form a secondary cyclone; and the inlet filter, located downstream of the secondary cyclone, for It receives the air flowing out of the secondary cyclone and transmits the air to the outside of the dust collecting bucket assembly. It contains folded filter paper. Among them, a plurality of cyclone cones are arranged around the air inlet filter, and each cyclone cone includes an outer cone and An inner tube, the air inlet filter is hollow, the bottom is closed, the bottom of the dust bucket cover has an opening, and the air inlet filter can be extracted from the dust bucket through the opening, and can also be installed back into the dust bucket through the opening.

The dust collecting bucket assembly provided by the present invention may also have such characteristics, and further include: a flat-plate filter arranged on the top of the air inlet filter.

The present invention also provides a vacuum cleaner, which is characterized in that it comprises the above-mentioned dust collecting bucket assembly.

The role and effect of the invention

According to the dust collecting bucket assembly of the present invention, it includes a primary cyclone, a microporous filter, a secondary cyclone, and an air inlet filter. The secondary cyclone includes at least two cyclone cones, and the dust-laden airflow passes through the primary cyclone. After filtering with the microporous filter, the second cyclone is filtered through the secondary cyclone, and then through the air inlet filter, so the overall dust and gas separation capacity of the dust bucket assembly can be significantly enhanced. Compared with the dust collecting bucket with a single cyclone filter in the prior art vacuum cleaner (CN204016180U), the dust collecting bucket assembly provided by the present invention can use the cyclone principle to separate more dust from the dust-containing airflow, effectively reducing the impact The amount of dust in the air inlet filter can effectively extend the service life of the air inlet filter.

In addition, the present invention adopts an air inlet filter made of folded filter paper. After the filter paper is folded, the total surface area is significantly increased. This structure makes the effective filter area of the air inlet filter larger and has a longer service life.

In addition, the dust bucket cover has an opening. When it is necessary to clean the inlet air filter, the user does not need to disassemble the dust bucket assembly and the motor assembly like CN204016180U. The inlet filter can be taken out of the dust bucket for cleaning through this opening. After completion, the air inlet filter is installed and reset through the opening, which is more convenient to use.

Description of the drawings

Figure 1 is a perspective view of a dust collecting bucket assembly in an embodiment of the present invention;

Figure 2 is an exploded view of the dust bucket assembly in the embodiment of the present invention;

Figure 3 is a vertical cross-sectional view of the dust collecting bucket assembly in the embodiment of the present invention;

4 is a horizontal cross-sectional view of the dust collecting bucket assembly in the embodiment of the present invention;

Figure 5 is a state diagram of the dust collecting bucket assembly and the vacuum cleaner body installed together in the embodiment of the present invention;

Figure 6 is a state diagram of the dust collecting bucket assembly separated from the main body of the vacuum cleaner in the embodiment of the present invention;

Fig. 7 is a schematic diagram of the combined use of an electric fan and a dust collecting bucket assembly in an embodiment of the present invention.

Detailed ways

In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the following embodiments are combined with the accompanying drawings to illustrate the dust collecting bucket assembly and the vacuum cleaner of the present invention in detail.

This embodiment provides a dust collecting bucket assembly 10 and a vacuum cleaner 100 having the dust collecting bucket assembly 10.

Fig. 1 is a perspective view of a dust collecting bucket assembly in an embodiment of the present invention; Fig. 2 is an exploded view of a dust collecting bucket assembly in an embodiment of the present invention.

As shown in FIGS. 1 and 2, the dust collecting bucket assembly 10 in this embodiment includes an air inlet pipe 14, a dust bucket 11, a microporous filter 17, a secondary cyclone, an air inlet filter 28 and a dust bucket cover 13.

Fig. 3 is a vertical cross-sectional view of the dust collecting bucket assembly in the embodiment of the present invention; Fig. 4 is a horizontal cross-sectional view of the dust collecting bucket assembly in the embodiment of the present invention.

As shown in Figures 3 and 4, the air inlet pipe 14 is arranged in front of the dust bucket 11 and communicates with the inner cavity of the dust bucket 11. The air inlet pipe 14 is provided with a deflector 15, and the dust-containing air (also called dust-containing air flow) flowing in from the air inlet pipe 14 is deflected by the deflector 15 and rushes toward the inner wall of the dust bucket 11.

The dust bucket 11 may be a regular cylindrical shape or an irregular cylindrical shape, and it has an axis 12. The axis 12 is only for the convenience of description, and is not necessarily the symmetrical centerline of the dust bucket 11. In the embodiment shown in FIG. 3, the air inlet filter 28 also has a central axis, and the central axis coincides with the axis 12 of the dust bucket 11.

As shown in Fig. 2, the microporous filter 17 is provided in the dust bucket 11, with a plurality of microscopic through holes in the middle part, and a flow guide tube 29 in the lower part. In the state shown in FIG. 1, the lower part of the guide tube 29 is in a sealed fit with the dust bucket cover 13.

A part of the dust bucket cover 13 is rotatably installed on the dust bucket 11. In addition, a locking mechanism 32 is also provided on the dust bucket 11. When the lock and release mechanism 32 is in the locked state, the dust bucket cover 13 can be locked on the dust bucket 11, and the dust bucket 11 is sealed to accommodate dust; when the lock and release mechanism 32 is in the released state, the dust bucket cover 13 can be Turn down to empty the dust in the dust bucket 11. The dust bucket 11 is made of transparent or semi-transparent material, so that the user can see the amount of dust in the dust bucket 11 easily.

As shown in FIGS. 2 and 3, the secondary cyclone is arranged inside the microporous filter 17 and includes an inner tube unit 18 and an outer cone unit 19. The inner tube unit 18 includes at least two inner tubes 22, and the outer cone unit 19 includes at least two outer cones 21. The outer cone unit 19 also includes an air inlet filter installation cavity 27 for installing an air inlet filter 28. In the state shown in FIG. 3, the lower edge of the air inlet filter installation cavity 27 and the upper surface of the dust bucket cover 13 are in a sealed fit.

The outer cone unit 19 and the inner tube unit 18 are independent of each other. When they are assembled inside the vacuum cleaner, the outer cone unit 19 and the inner tube unit 18 are nested together. An inner tube 22 and an outer cone 21 form a cyclone cone, The inner tube 22 is located inside the outer cone 21, and the top periphery of each outer cone 21 is provided with a first air inlet 20, so that the air introduced through the microporous filter 17 can pass through the first air inlet 20 along the outer wall of the inner tube 22 The tangent direction flows into the cyclone cone, forming a swirling airflow in the cyclone cone.

As shown in Figure 3, when the inner tube 22 and the outer cone 21 are nested together, an air gap 23 is formed between the outer wall of the inner tube 22 and the inner wall of the outer cone 21, and the air introduced from the first air inlet 20 follows the air The gap 23 rotates and flows downward.

The bottom of the outer cone 21 is provided with a downward dust outlet 24, and the bottom of the inner tube 22 is provided with a downward second air inlet 25, and the second air inlet 25 is higher than the dust outlet 24. The top of the inner tube 22 is provided with an inner tube air outlet. Because of the structural sealing and matching design, the air flowing in from the first air inlet 20 can only flow upwards out of the cyclone cone through the inner tube air outlet, that is, out of the secondary cyclone. It cannot flow from other places.

As shown in Fig. 3, the air inlet filter 28 is installed in the air inlet filter installation cavity 27, the top of the air inlet filter installation cavity 27 is located at the top of the dust collection bucket 11, and the bottom of the air inlet filter installation cavity 27 extends to the dust bucket 11 , And sealed with the dust bucket cover 13.

As shown in FIGS. 2 and 3, the air inlet filter 28 is preferably a hollow cylindrical shape, including a hollow circular top cover, a folded filter paper enclosing a hollow cylinder, and a solid circular bottom cover 31. The folded filter paper is located between the hollow top cover and the bottom cover 31, and the outer diameter of the hollow top cover and the bottom cover 31 is larger than the maximum outer diameter of the folded filter paper. The folded filter paper is preferably folded in the vertical direction. The hollow top cover and bottom cover 31 of the air inlet filter 28 are respectively sealed and matched with the inner wall of the air inlet filter installation cavity 27 to ensure that the air introduced from upstream can only pass through the surface of the folded filter paper and enter the hollow cavity of the air inlet filter 28体30.

The upper side of the air inlet filter 28 is provided with a filtering air inlet 26 for receiving the air introduced upstream. The air inlet filter 28 includes a hollow cavity 30 surrounded by folded filter paper, and the dust-containing air flow flows in from the outer surface of the folded filter paper and flows out from above the hollow cavity 30 to the electric fan of the vacuum cleaner.

Compared with the air inlet filter with a smooth surface, under the premise of the same outer diameter, the folded filter paper can have a larger surface area, which can intercept more dust and has better air permeability. The filtration efficiency of the pleated filter paper can be selected according to different levels, for example, it can reach the HEPA level, that is, the filtration efficiency of dust with a particle size of 0.3 microns can reach more than 99.9%. The material of the folded filter paper is preferably a non-woven fabric.

As shown in Figures 3 and 4, the number of cyclone cones in this embodiment is 10, and the 10 cyclone cones are arranged annularly outside the inlet filter installation cavity 27. A handle 33 is also provided under the bottom of the air inlet filter 28 and is arranged on the bottom cover 31 of the air inlet filter.

Preferably, the 10 cyclone cones are arranged in a ring shape along the direction surrounding the central axis of the air inlet filter 28.

As shown in Figures 2 and 3, the dust bucket cover 13 is also provided with an opening 35. The user can easily touch the handle 33 from the outside of the dust bucket 11, and then draw the air inlet filter 28 from the dust bucket 11 through the opening 35. If it comes out, the air inlet filter 28 can also be easily installed back into the dust bucket 11 through the opening 35, and at the same time, the air inlet filter 28 and the air inlet filter installation cavity 27 can be sealed and matched. The sealing fit between the bottom cover 31 and the air inlet filter mounting cavity 27 is preferably friction fit through a soft rubber element.

Figure 5 is a state diagram of the dust collecting bucket assembly and the vacuum cleaner body in the embodiment of the present invention; A schematic diagram of the use of an electric fan and a dust collecting bucket assembly in the embodiment of FIG.

As shown in FIGS. 5-7, the vacuum cleaner 100 in this embodiment includes a vacuum cleaner main body 36 and a dust collecting bucket assembly 10. Among them, the cleaner body 36 has an electric fan 34.

The electric fan 34 is located outside the dust collecting bucket assembly 10, and is used to generate suction airflow. One embodiment is shown in Figures 5 and 7. After the vacuum cleaner 100 is installed, the electric fan 34 is located above the dust bucket assembly 10 and is in close contact with the dust bucket assembly 10, that is, with the air intake in the dust bucket 11. The filter 28 is in close contact. The electric fan 34 can also be arranged at a position far away from the dust collecting bucket assembly 10 to achieve airflow communication with the dust collecting bucket assembly 10 through a sealed manner to ensure that all air flowing out of the dust collecting bucket assembly 10 can reach the electric fan 34 and pass through The electric fan 34 discharges downstream.

As shown in Figure 3, the electric fan 34 rotates at a high speed to generate negative pressure. The negative pressure is transmitted to the surface of the air inlet filter 28 through the hollow inner cavity 30 of the air inlet filter 28, and then transmitted to the secondary cyclone by the filter air inlet 26 The inner tube 22 of the cyclone is transferred from the second air inlet 25 at the bottom of the inner tube 22 to the air gap 23 between the inner tube 22 and the outer cone 21, and then to the first air inlet 20 of the secondary cyclone. Each cyclone cone in the secondary cyclone has an independent first air inlet 20, and each cyclone cone corresponds to an independent filtered air inlet 26.

After the negative pressure generated by the electric fan 34 is transmitted to the first air inlet 20 of the secondary cyclone, it is further transmitted to the gap 16 through the micropores of the microporous filter 17, that is, the inner wall of the dust bucket 11 and the microporous filter 17. In the meantime, it is finally transferred to the outside of the dust collecting bucket assembly 10 through the air inlet pipe 14, so that the atmospheric pressure drives the external air from the air inlet pipe 14 into the dust collecting bucket 11 at a high speed, and flows into the microporous filter 17 through the micropores on the microporous filter 17. 17 inside. The diameter of the micropores is relatively small. It can be 0.3mm. All dust with a particle size greater than 0.3mm and some dust with a particle size less than 0.3mm are intercepted by the micropores. The air passing through the micropores can only contain particles less than 0.3. mm of dust.

Among them, the air inlet pipe 14, the baffle 15, the dust bucket 11, the microporous filter 17, and the gap 16 between the inner wall of the dust bucket 11 and the microporous filter 17 form a primary cyclone, which can promote the introduction of the air inlet pipe 14 The dust-laden air stream rotates around the microporous filter 17. The function of the baffle 15 is to guide the airflow to enter along the tangential direction of the periphery of the microporous filter, and then form a cyclone under the combined action of negative pressure, inertia, and the inner wall of the dust bucket.

After the dust-laden air (dust-laden airflow) passes through the microporous filter 17, it then reaches the air gap 23 in the cyclone cone from the first air inlet 20. The first air inlet 20 is also provided with a diversion mechanism to promote the air along The periphery of the inner tube 22 rotates and flows to form a cyclone. At the same time, due to gravity and the negative pressure generated by the electric fan 34, the airflow rotates while moving at a high speed below the cyclone cone. In this process, part of the dust in the air is caused by the centrifugal effect. Fly to the inner wall of the outer cone 21 and fall due to gravity, enter the guide tube 29 through the dust outlet 24 below the outer cone 21, and finally reach the bottom of the dust bucket 11.

The air rotates at high speed inside the cyclone cone of the secondary cyclone, and after reaching the second air inlet 25 at the bottom of the inner tube 22, the air enters the second air inlet 25 and moves upward along the inner tube 22, passing through the inner tube 22 to the air inlet. The filter air inlet 26 of the filter 28 impacts the surface of the folded filter paper on the air inlet filter 28, the dust is intercepted by the folded filter paper, and the filtered air penetrates the folded filter paper to reach the hollow cavity 30 of the air inlet filter. The top of the hollow cavity 30 escapes and runs towards the electric fan.

The function and effect of the embodiment

According to the dust collecting bucket assembly involved in this embodiment, because it includes a primary cyclone, a microporous filter, a secondary cyclone, and an inlet filter, the secondary cyclone includes at least two cyclone cones, and the dust-laden airflow passes through the primary cyclone. After the first cyclone filtration, the microporous filter enters the secondary cyclone for the second cyclone filtration, and finally enters the air inlet filter. The overall dust and gas separation capacity of the entire dust collection bucket assembly is significantly enhanced. Compared with the dust collecting bucket with a single cyclone filter in the prior art vacuum cleaner (CN204016180U), the dust collecting bucket assembly provided by the present invention can use the cyclone principle to separate more dust from the dust-containing airflow, effectively reducing the impact The amount of dust in the air inlet filter can effectively extend the service life of the air inlet filter.

In addition, this embodiment adopts an air inlet filter made of folded filter paper, so that the effective filter area of the air inlet filter is larger, the service life is longer, and higher filtration efficiency can be achieved.

In addition, the dust bucket cover has an opening through which the air inlet filter can be taken out of the dust bucket for cleaning, and the air inlet filter can be installed and reset through the opening after the cleaning is completed, which is more convenient for users to use.

The foregoing embodiments are preferred cases of the present invention, and are not used to limit the protection scope of the present invention.

In this embodiment, the top of the hollow cavity of the air inlet filter is provided with an opening. In other embodiments, the top of the air inlet filter can also be provided with a flat filter, that is to say, a flat filter is provided on the top of the hollow cavity. , Used to further filter the air overflowing from the hollow cavity 30, and then let the further filtered air flow to the electric fan.

Claims

A dust collecting bucket assembly is used for collecting dust on a vacuum cleaner, and is characterized in that it comprises:

Dust bucket, used to collect dust;

The dust bucket cover is installed at the bottom of the dust bucket;

The air inlet pipe is arranged at the front of the dust bucket and communicates with the inner cavity of the dust bucket for introducing dust-containing airflow;

The microporous filter is arranged in the dust bucket and has a plurality of micropores for filtering the dust-containing air flow and guiding the filtered air to flow in the axial direction of the dust bucket;

A primary cyclone for causing the dust-containing air flow introduced from the air inlet pipe to rotate around the microporous filter;

The secondary cyclone is located downstream of the microporous filter and includes at least two cyclone cones, the cyclone cones are used to receive the air flowing out of the microporous filter and promote airflow in the cyclone cone Rotate to form a secondary cyclone; and

The air inlet filter, located downstream of the secondary cyclone, is used to receive the air flowing out of the secondary cyclone and transmit the air to the outside of the dust collecting bucket assembly, including folded filter paper,

Wherein, a plurality of the cyclone cones are arranged in a direction surrounding the air inlet filter, and each of the cyclone cones includes an outer cone and an inner tube,

The air inlet filter is in a hollow form, with an opening at the top and a closed bottom,

The bottom of the dust bucket cover has an opening, and the air inlet filter can be extracted from the dust bucket through the opening, and can also be installed back into the dust bucket through the opening.
The dust collecting bucket assembly of claim 1, wherein:

Wherein, a part of the dust bucket cover is rotatably installed on the dust bucket,

A locking mechanism is provided on the dust bucket, and the locking mechanism enables the dust bucket cover to be opened or closed relative to the dust bucket.
The dust collecting bucket assembly of claim 1, wherein:

Wherein, the bottom of the air inlet filter is in a sealing fit with the secondary cyclone.
A dust collecting bucket assembly is used for collecting dust on a vacuum cleaner, and is characterized in that it comprises:

Dust bucket, used to collect dust;

The dust bucket cover is installed at the bottom of the dust bucket;

The air inlet pipe is arranged at the front of the dust bucket and communicates with the inner cavity of the dust bucket for introducing dust-containing airflow;

The microporous filter is arranged in the dust bucket and has a plurality of micropores for filtering the dust-containing air flow and guiding the filtered air to flow in the axial direction of the dust bucket;

A primary cyclone for causing the dust-containing air flow introduced from the air inlet pipe to rotate around the microporous filter;

The secondary cyclone is located downstream of the microporous filter and includes a plurality of cyclone cones, the cyclone cones are used to receive the air flowing out of the microporous filter and promote the airflow to rotate in the cyclone cone , Forming a secondary cyclone; and

The inlet air filter, located downstream of the secondary cyclone, is used to receive the air flowing out of the secondary cyclone and transmit the air to the outside of the dust collecting bucket assembly, including folded filter paper,

Wherein, a plurality of the cyclone cones are arranged around the air inlet filter, and each of the cyclone cones includes an outer cone and an inner tube,

The air inlet filter has a hollow shape with a closed bottom,

The bottom of the dust bucket cover has an opening, and the air inlet filter can be extracted from the dust bucket through the opening, and can also be installed back into the dust bucket through the opening.
The dust collecting bucket assembly according to claim 1 or 4, further comprising:

The flat filter is arranged on the top of the air inlet filter.
A vacuum cleaner, characterized by comprising the dust collecting bucket assembly according to any one of claims 1-5.