WO2020206990A1

WO2020206990A1 - Dust collection apparatus and vacuum cleaner

Info

Publication number: WO2020206990A1
Application number: PCT/CN2019/114111
Authority: WO
Inventors: 倪祖根
Original assignee: 莱克电气股份有限公司
Priority date: 2019-04-09
Filing date: 2019-10-29
Publication date: 2020-10-15
Also published as: CN109805837A

Abstract

A dust collection apparatus and a vacuum cleaner, the dust collection apparatus comprising a frame (4) and a first dust-air separation apparatus that is connected to the frame (4). The first dust-air separation apparatus comprises a first air intake cover (2), air flow entering the interior of the first air intake cover (2) from an outer peripheral surface of same, and the first air intake cover (2) being configured to be able to rotate relative to the frame (4). The first air intake cover (2) in the dust collection apparatus may rotate relative to the frame (4), and in the process of entering the interior of the first air inlet (2) from the outer peripheral surface thereof, air flow is affected by a centrifugal force so that impurities in the air flow, such as dust and hair, cannot attach to the surface of the first air intake cover (2), thereby allowing the first air intake cover (2) to be self-cleaning; and impurities, such as dust or hair, are prevented from blocking the first air intake cover (2),thus the amount of air taken in by the first dust-air separation apparatus and reducing the difficulty of cleaning the first air intake cover(2).

Description

Dust collecting device and vacuum cleaner

Technical field

The invention relates to the technical field of dust removal equipment, in particular to a dust collection device and a vacuum cleaner.

Background technique

A vacuum cleaner is a commonly used household appliance, which uses a motor to drive the blades to rotate at a high speed to generate negative air pressure in a sealed casing, thereby sucking dust. A dust collecting device is arranged in the vacuum cleaner, and the airflow enters the dust collecting device to separate the dust and then discharge it, and the dust is accumulated in the dust collecting device.

However, when the airflow passes through the dust collecting device, dust and hair in the airflow are easy to accumulate on the air inlet hood of the dust collecting device, blocking the air inlet hood, causing the dust collecting device to have problems such as reduced air intake and difficulty in cleaning.

Therefore, there is an urgent need for a dust collecting device and a vacuum cleaner to solve the problems of easy blockage of the air inlet hood and difficulty in cleaning.

Summary of the invention

An object of the present invention is to provide a dust collecting device that can prevent dust or hair from clogging the air inlet hood.

To achieve this goal, the present invention adopts the following technical solutions:

A dust collecting device includes a bracket and a first dust and gas separation device connected to the bracket. The first dust and gas separation device includes a first air inlet hood, and airflow enters from the outer peripheral surface of the first air inlet hood On its inner side, the first air intake hood is configured to be able to rotate relative to the bracket.

Wherein, the first air intake hood is configured to rotate under the push of air flow.

Wherein, the first dust-gas separation device further includes a wind impeller, the wind impeller is rotatably connected with the bracket, the airflow enters the first air inlet hood, passes through the wind impeller and pushes the wind impeller to rotate, Drive the first air inlet hood to rotate.

Wherein, the central axis of the wind impeller coincides with the central axis of the first air inlet hood.

Wherein, the dust collecting device includes a driving assembly, and the driving assembly is configured to drive the first air inlet hood to rotate.

Wherein, the first dust and gas separation device is provided with a spiral air inlet, and the rotation direction of the spiral air inlet is the same as the rotation direction of the first air inlet hood.

Wherein, the spiral air inlet includes a plurality of shunt air outlets arranged in a circumferential direction.

Wherein, the dust collection device further includes a second dust and gas separation device connected to the bracket, the second dust and gas separation device is sleeved outside the first dust and gas separation device, and the airflow sequentially passes through the second dust and gas separation device. A dust and gas separation device and the first dust and gas separation device.

Wherein, the first dust and gas separation device is sheathed with a bearing, and the second dust and gas separation device is sheathed outside the bearing.

Another object of the present invention is to provide a vacuum cleaner that can prevent dust or hair from clogging the air inlet hood.

A vacuum cleaner includes the above-mentioned dust collection device.

Beneficial effects: The present invention provides a dust collecting device and a vacuum cleaner. The first air inlet hood in the dust collection device can rotate relative to the bracket. When the airflow enters the inner side from the outer peripheral surface of the first air inlet hood, due to the influence of centrifugal force, impurities such as dust or hair in the airflow cannot be attached to the first airflow hood. The surface of the air intake hood enables the first air intake hood to be self-cleaning, avoiding dust or hair and other impurities from blocking the first air intake hood, thereby ensuring the air intake of the first dust and gas separation device and reducing the cleaning of the first air intake hood Difficulty.

Description of the drawings

Fig. 1 is a front view of a dust collecting device provided by Embodiment 1 of the present invention;

2 is a schematic diagram of the structure of the dust collection device provided by Embodiment 1 of the present invention;

3 is a cross-sectional view of the first dust and gas separation device and the bracket provided by Embodiment 1 of the present invention after being assembled;

4 is a cross-sectional view of the first dust and gas separation device and the bracket provided by Embodiment 2 of the present invention after being assembled;

Fig. 5 is a schematic structural diagram of a dust collecting device provided in Embodiment 3 of the present invention;

Fig. 6 is a front view of a dust collecting device provided by Embodiment 3 of the present invention;

FIG. 7 is a cross-sectional view of a dust collecting device provided by Embodiment 3 of the present invention;

Fig. 8 is a schematic structural diagram of a wind impeller provided in Embodiment 3 of the present invention;

Figure 9 is a cross-sectional view of a wind impeller provided by Embodiment 3 of the present invention;

10 is a schematic diagram of the structure of the dust collection device provided by Embodiment 4 of the present invention;

11 is a schematic diagram of the structure of the dust collecting device provided by Embodiment 4 of the present invention after the cover plate is removed;

Fig. 12 is a cross-sectional view of the dust collecting device provided by Embodiment 4 of the present invention after the cover plate is removed.

among them:

1. The first dust cup; 11. Spiral air outlet; 2. The first air inlet hood; 3. The wind impeller; 31. Rotating shaft; 32. Flange; 321. Shunt air outlet; 4. Bracket; 41. Support rib; 42 5. Containment cavity; 5. Drive assembly; 51. Motor; 52. Drive shaft; 53, Driving gear; 54, Belt; 55, Driven gear; 6. Second dust cup; 61, Air inlet; 7. Second inlet Wind hood; 8, cover plate; 81, air outlet.

detailed description

In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the present invention will be further described below in conjunction with the drawings and specific implementations.

Example 1

This embodiment provides a vacuum cleaner. The vacuum cleaner includes a housing, a negative pressure component arranged in the housing, and a dust collecting device for collecting dust, hair and other impurities. The housing is provided with a dust suction port, the dust suction port is connected with the air inlet of the dust collection device, and a negative pressure assembly is arranged between the dust suction port and the dust collection device. The negative pressure component may include a motor and a blade, and the motor drives the blade to rotate at a high speed to generate a negative pressure at the dust suction port, thereby sucking the gas outside the casing into the dust collecting device. After the airflow enters the dust collection device, it is separated from dust, hair and other impurities. The clean air is discharged from the exhaust port of the vacuum cleaner, and the dust, hair and other impurities are accumulated in the dust collection device to achieve the cleaning effect of the vacuum cleaner.

As shown in FIGS. 1 and 2, the dust collection device includes a first dust and gas separation device, and the first dust and gas separation device includes a first dust cup 1 and a first air inlet hood 2. The first dust cup 1 and the first air inlet hood 2 are both connected to the bracket 4, and the first dust cup 1 is arranged outside the first air inlet hood 2. The inlet of the first dust cup 1 is connected with the dust suction port, and the air flow sucked in through the dust suction port enters the first dust cup 1, and then enters the first air intake hood 2 through the outer peripheral surface of the first air intake hood 2 and is discharged. Optionally, the first air intake cover 2 may be a grille structure, or a cover body with a plurality of through holes on the outer peripheral surface. The airflow is separated from impurities such as dust while passing through the first air inlet hood 2. The impurities are blocked on the outside of the first air inlet hood 2, and the filtered airflow enters the inside of the first air inlet hood 2 and is discharged.

Specifically, the first air inlet hood 2 is arranged on the bracket 4, and the bracket 4 is provided with a central hole. The central hole coincides with the central axis of the first air inlet hood 2, and the airflow entering the first air inlet hood 2 is discharged through the central hole . Optionally, the bracket 4 and the first dust cup 1 can be an integrated structure, which can simplify the structure of the dust collecting device.

In the prior art, the first air intake hood 2 is fixed. When the airflow passes through the first air intake hood 2, dust and hair and other sundries can easily accumulate on the outer surface of the first air intake hood 2, thereby blocking the first air intake hood 2. The air inlet hood 2 causes problems such as decreased air inlet volume and difficulty in cleaning the dust collector.

In order to solve the above problem, when the dust collecting device in this embodiment is working, the first air inlet hood 2 can rotate relative to the first dust cup 1, so that the airflow passing through the first air inlet hood 2 separates the dust inside under the action of centrifugal force. Impurities, such as dust or hair, cannot be attached to the surface of the first air inlet hood 2, so that the first air inlet hood 2 can be self-cleaned to prevent dust or hair and other impurities from blocking the first air inlet hood 2, thereby ensuring The air intake volume of the first dust and gas separation device reduces the difficulty of cleaning the first air intake hood 2.

In this embodiment, the first air inlet hood 2 can be rotated under the push of the airflow, which reduces the energy consumption of the dust collection device. As shown in FIG. 3, the first dust and gas separation device further includes a wind impeller 3, the wind impeller 3 can be arranged in the central hole of the bracket 4, and the rotating shaft 31 of the wind impeller 3 is connected to the first air inlet hood 2. When the airflow enters the interior of the first air inlet hood 2 through the outer peripheral surface, the airflow passes through the central hole of the bracket 4, and the airflow acts on the surface of the wind impeller 3, thereby pushing the air impeller 3 to rotate, thereby driving the first air inlet hood 2 Rotate.

Optionally, in order to reduce the influence of the rotating shaft 31 on the air flow entering the central hole in the first air inlet cover 2, the rotating shaft 31 is connected to an end of the first air inlet cover 2 away from the bracket 4.

In order to fix the wind impeller 3, the side wall of the central hole of the bracket 4 may have a supporting rib 41 extending inwardly. One end of the rotating shaft 31 of the wind impeller 3 is connected to the supporting rib 41 through a bearing. The bearing can reduce the impact of the wind impeller 3 when it rotates. The friction force facilitates the rotation of the wind impeller 3 under the action of the airflow; the other end of the rotating shaft 31 of the wind impeller 3 is connected with the first air inlet hood 2 so as to drive the first air inlet hood 2 to rotate. The first air inlet hood 2 is supported and fixed by the rotating shaft 31, and the force between the first air inlet hood 2 and the bracket 4 can also be reduced, thereby reducing the friction between the first air inlet hood 2 and the bracket 4.

Optionally, the first air inlet hood 2, the central hole of the bracket 4, and the wind impeller 3 can be arranged coaxially, so that the centrifugal force can be evenly distributed on the outer peripheral surface of the first air inlet hood 2, which is beneficial to improve the uniformity of self-cleaning. At the same time, the circumferential air intake volume of the first air intake hood 2 can be made uniform, and the interference of the eccentric rotation of the first air intake hood 2 on the airflow can be reduced.

After the airflow passes through the first air inlet hood 2, a spiral airflow with a certain rotation direction is formed, so that the airflow entering the first dust cup 1 can be smoothly discharged from the outlet of the first dust cup 1. The outlet may be a spiral air outlet 11. Optionally, the rotation direction of the first air inlet hood 2 is the same as the rotation direction of the spiral air outlet 11, that is, the rotation direction of the spiral air outlet 11 is the same as the rotation direction of the wind impeller 3, so that the rotation direction of the spiral airflow is the same as the first The rotation direction of the air inlet hood 2 is the same, so that the spiral airflow passing through the first air inlet hood 2 can be smoothly discharged through the spiral air outlet 11.

Example 2

This embodiment provides a vacuum cleaner whose structure is substantially the same as that in Embodiment 1, except that the first air inlet hood 2 is driven to rotate by a driving assembly.

Specifically, as shown in FIG. 4, the drive assembly may include a motor 51 and a transmission shaft 52. The motor 51 may be disposed on the support rib 41 in the central hole of the bracket 4, and the output end of the motor 51 is connected to the transmission shaft 52. 52 is connected to the first air inlet hood 2. When the dust collecting device is working, the motor 51 starts and drives the first air inlet hood 2 to rotate through the transmission shaft 52, so as to prevent dust and other impurities from blocking the first air inlet hood 2 and ensure the air intake of the first dust and gas separation device.

Optionally, the motor 51 may be a speed-regulating motor, so that the rotation speed of the first air inlet hood 2 can be adjusted according to the amount of impurities such as dust, the wind speed gear of the vacuum cleaner, and the like.

Example 3

This embodiment provides a vacuum cleaner whose structure is roughly the same as that in Embodiment 1, except that the dust collector has a two-stage air inlet structure. Through two air inlet filtration, dust and other impurities can be separated more thoroughly. Achieve better dust removal effect.

Specifically, the dust collection device further includes a second dust and gas separation device, the second dust and gas separation device is sleeved outside the first dust and gas separation device, and the airflow entering from the dust suction port sequentially passes through the second dust and gas separation device and the first dust and gas separation device. Dust and gas separation device, the filtered gas is discharged, and the dust is accumulated in the dust collection device. Optionally, the second dust and gas separation device may be arranged coaxially with the first dust and gas separation device, which is beneficial to uniform filtration of the airflow.

As shown in Figures 5 and 6, the dust collection device further includes a cover plate 8 with an air outlet 81 provided on the cover plate 8. The cover plate 8 is arranged on one side of the bracket 4, and the air outlet 81 is directly opposite to the center hole of the bracket 4. . The first dust and gas separation device and the second dust and gas separation device are arranged on the side of the bracket 4 opposite to the cover plate 8. The air flow passing through the second dust and gas separation device and the second dust and gas separation device sequentially passes through the central hole and the air outlet 81 is discharged.

In order to filter dust and other impurities more thoroughly, the filtration grade of the first dust-gas separator can be higher than that of the second dust-gas separator. The airflow passes through the second dust-gas separator to filter dust with larger particles and smaller particles. The dust is filtered by the first dust-gas separator. Specifically, as shown in FIG. 7, the second dust and gas separation device includes a second dust cup 6 and a second air inlet hood 7 located in the second dust cup 6. The second air intake cover 7 may be a grille structure or a cover body with a plurality of through holes on the outer peripheral surface. The grid gap or through-hole aperture on the second air intake hood 7 is larger than the grid gap or through-hole aperture on the first air intake hood 2 so that finer dust and other impurities are filtered by the first air intake hood 2.

Optionally, an air inlet 61 is provided on the peripheral surface of the second dust cup 6, the second air inlet hood 7 and the second dust cup 6 are connected to the bracket 4, and the first dust cup 1 is connected to the second air inlet hood 7. The rotating shaft 31 of the wind impeller 3 may have a hollow structure. One end of the rotating shaft 31 is connected to the first air inlet cover 2 and the other end passes through the central hole of the bracket 4 to communicate with the air outlet 81. The rotating shaft 31 and the bracket 4 can rotate relatively. The wind impeller 3 is arranged in the rotating shaft 31, and the air flow passes through the rotating shaft 31 to push the wind impeller 3 to rotate, so as to drive the first air inlet cover 2 to rotate through the rotating shaft 31.

In order to reduce the friction force received when the rotating shaft 31 rotates, bearings are provided between the rotating shaft 31 and the cover plate 8 and between the rotating shaft 31 and the second air inlet cover 7.

In order to make the air flow entering the first dust cup 1 uniformly pass through the outer peripheral surface of the first air inlet hood 2, as shown in FIGS. 8 and 9, an annular flange 32 is provided at one end of the rotating shaft 31 close to the first dust cup 1. , The flange 32 extends into the first dust cup 1 and can be rotated relative to the first dust cup 1. The flange 32 is provided with a plurality of split air openings 321 along the circumferential direction, and the airflow entering the first dust cup 1 passes through the plurality of split air openings 321 is divided so that the airflow on the outer peripheral surface of the first air inlet hood 2 is evenly distributed. Optionally, the multiple split air openings 321 may be distributed in a spiral, and the spiral direction is the same as the rotation direction of the wind impeller 3 so that the airflow can pass through the first air inlet hood 2 smoothly.

In order to prevent the dust falling on the bottom of the second dust cup 6 from rising under the air flow, the bottom of the second air inlet hood 7 can be a conical shape that expands. On the one hand, the second dust cup 6 and the second air inlet hood are reduced. The influence of the airflow between 7 on the bottom dust, on the other hand, can also prevent the bottom dust from rising.

In order to increase the air intake between the first dust cup 1 and the first air intake hood 2, the first dust cup 1 may be an inverted cone with a gradually decreasing cross-sectional area from top to bottom, thereby expanding the first dust cup 1 The space between the position of the air inlet 61 and the first air inlet hood 2 further increases the air inlet volume.

Example 4

As shown in FIG. 10 and FIG. 11, this embodiment provides a vacuum cleaner whose structure is substantially the same as that in Embodiment 3, except that the first air inlet hood 2 is rotated by the driving assembly 5.

The bracket 4 is provided with a drive assembly 5 which replaces the wind impeller 3 in the rotating shaft 31 to realize the rotation of the first air inlet cover 2. Optionally, a accommodating cavity 42 is provided on the bracket 4, and the driving assembly 5 is arranged in the accommodating cavity 42. After the cover 8 is connected to the bracket 4, the opening of the accommodating cavity 42 is blocked to prevent the driving assembly 5 from being exposed, thereby protecting the driving assembly The role of 5.

As shown in FIG. 12, the driving assembly 5 may include a motor 51, a driving gear 53, a belt 54 and a driven gear 55. The output end of the motor 51 is drivingly connected to the driving gear 53, the driven gear 55 is sleeved outside the rotating shaft 31, and the belt 54 is connected to the driving gear 53 and the driven gear 55. After the motor 51 is started, the power is sequentially transmitted through the driving gear 53, the belt 54 and the driven gear 55, so as to drive the rotation shaft 31 to rotate and realize the rotation of the first air inlet hood 2.

In other embodiments, the driving assembly 5 may also have other structures, as long as it can drive the first air inlet hood 2 to rotate.

The above content is only the preferred embodiments of the present invention. For those of ordinary skill in the art, according to the ideas of the present invention, there will be changes in the specific implementation and the scope of application. The content of this specification should not be construed as a reference to the present invention. limits.

Claims

A dust collection device, comprising a bracket (4) and a first dust and gas separation device connected to the bracket (4), characterized in that the first dust and gas separation device includes a first air inlet hood (2), The airflow enters the inner side of the first air inlet hood (2) from the outer peripheral surface thereof, and the first air inlet hood (2) is configured to be able to rotate relative to the bracket (4).
The dust collecting device according to claim 1, wherein the first air inlet hood (2) is configured to rotate under the push of air flow.
The dust collection device according to claim 2, wherein the first dust and gas separation device further comprises a wind impeller (3), the wind impeller (3) is rotatably connected with the bracket (4), and the airflow enters The first air inlet hood (2) passes the wind impeller (3) and pushes the wind impeller (3) to rotate, so as to drive the first air inlet hood (2) to rotate.
The dust collecting device according to claim 3, characterized in that the central axis of the wind impeller (3) and the first air inlet hood (2) coincide.
The dust collection device according to claim 1, wherein the dust collection device comprises a driving assembly (5), and the driving assembly (5) is configured to drive the first air inlet hood (2) to rotate.
The dust collection device according to any one of claims 1-5, wherein the first dust and gas separation device is provided with a spiral air inlet (11), and the rotation direction of the spiral air inlet (11) is The rotation direction of the first air inlet hood (2) is the same.
The dust collection device according to claim 6, wherein the spiral air inlet (11) comprises a plurality of shunt air outlets (321) arranged in a circumferential direction.
The dust collection device according to any one of claims 1 to 5, wherein the dust collection device further comprises a second dust and gas separation device connected to the bracket (4), and the second dust and gas separation device The separation device is sleeved outside the first dust and gas separation device, and the airflow passes through the second dust and gas separation device and the first dust and gas separation device in sequence.
8. The dust collection device of claim 8, wherein the first dust and gas separation device is sheathed with a bearing, and the second dust and gas separation device is sheathed outside the bearing.
A vacuum cleaner, characterized by comprising the dust collecting device according to any one of claims 1-9.