Dust and dirt separation device and vacuum cleaner

Abstract

The present invention provides a dust separation device and a dust collector, comprising: a main body, a vacuum motor with a wind wheel disposed therein; a dust collecting chamber disposed on the main body, an air inlet disposed on the dust collecting chamber; a rotating motor disposed in the main body, an output shaft disposed on the rotating motor, a filter disposed on the output shaft; the filter further comprising a dust shield, the inner diameter of the dust shield gradually increasing in a direction opposite to the rotating motor, the edge of the filter facing away from the rotating motor being disposed adjacent to the inner wall of the dust collecting chamber. This arrangement reduces the impact force of large particles of dirt on the filter, ensuring the filtering performance of the filter. At the same time, an annular shielding portion is disposed on the inner wall of the main body, which can further shield large particles of dust that move to the inner wall of the dust collecting chamber under the action of centrifugal force, ensuring the stability of the filtering performance of the filter, and avoiding filtration leakage, thereby effectively achieving complete filtration of the airflow.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaners, and in particular to a dust and dirt separation device and a vacuum cleaner. Background Art

[0002] Nowadays, the economy continues to develop rapidly, consumer income continues to grow, especially the rapid growth of income levels of residents in large and medium-sized cities, residents' living conditions continue to improve, there are more and more large-area houses, and residents' demand for vacuum cleaners is also getting stronger.

[0003] A vacuum cleaner is a common electrical appliance that uses a built-in motor to create a negative pressure environment, drawing air mixed with dust and dirt into the vacuum cleaner. After filtering and separating, the dust and dirt remain inside the vacuum cleaner, while clean air is discharged to the outside. The dust separator in a vacuum cleaner typically includes a porous bag separator or a cyclone separator.

[0004] However, after a period of use, the small holes in the porous bag separator will quickly become clogged with dirt, causing the vacuum cleaner's suction power to drop. After the dust bag is full, the old bag needs to be thrown away and replaced with a new one, resulting in resource waste and environmental pollution, increasing user costs, and low dirt separation efficiency. For cyclone separators, the airflow carrying dust and dirt will form a cyclone inside the vacuum cleaner. Since the dust particles themselves have a relatively large mass, they rely on centrifugal force to rub and collide with the container wall and fall into the dust box, thereby achieving the purpose of separating dirt and air. However, the cyclone separator itself consumes a large amount of vacuum pressure, requires a large vacuum motor power, and is noisy during operation, affecting the user experience.

[0005] The prior art provides a dust separator, which includes a disk with small holes located at the air flow outlet of the dust collecting chamber and a motor that drives the disk to rotate. The disk is arranged to rotate around a rotation axis and includes holes for the cleaned air flow to pass through. The air flow carrying dirt enters the chamber and contacts the rotating turntable. The turntable applies a tangential force to the air flow, so the dirt carried in the air flow moves radially along the surface of the turntable toward the edge of the turntable. During this process, the air flow will flow out from the small holes in the turntable, and the dirt in it will continue to move toward the outer diameter edge due to its greater inertia and gather at the bottom of the chamber. Compared with a cyclone separator, this separator consumes less vacuum pressure and can be used with a vacuum motor with lower power and noise.

[0006] However, during the operation of this separator, all dirt will follow the airflow to impact the turntable, and larger particles in the dirt will scratch the turntable, affecting the normal operation of the turntable. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that large particles of dirt impact and damage the turntable during the operation of the dust and dirt separator, thereby providing a dust and dirt separation device and a dust collector.

[0008] The present invention also provides a dust and dirt separation device, comprising: a main body, a vacuum motor with a wind wheel arranged inside;

[0009] A dust collecting chamber is provided on the main body, and an air inlet is provided on the dust collecting chamber;

[0010] A rotating motor is provided in the main body, an output shaft is provided on the rotating motor, and a filter is provided on the output shaft;

[0011] The filter screen also includes a dust shield portion, the inner diameter of which gradually increases in the direction away from the rotating motor. The inner wall of the main body is also provided with an annular shield portion, the inner edge of which is adjacent to the outer edge of the dust shield portion.

[0012] The air inlet is arranged on the side wall of the dust collecting chamber.

[0013] The filter screen includes: a filter portion connected to the output shaft and having a plurality of opening areas;

[0014] One end of the dust shield is connected to the filter portion, and the other end is closely adjacent to and spaced from the annular shielding portion.

[0015] A gap blocking portion is further provided on the inner wall of the annular shielding portion. The gap blocking portion is provided on the lower side of the dust blocking portion and is suitable for blocking the gap between the dust blocking portion and the annular shielding portion.

[0016] The gap blocking part is a dust-proof brush.

[0017] The annular shielding portion includes: a horizontal portion, the outer edge of which is connected to the inner wall of the main body;

[0018] The vertical portion is arranged on the inner edge of the horizontal portion and is suitable for connecting with the dust-proof brush.

[0019] A groove is provided on the vertical portion at a position corresponding to the dust-proof brush, and the dust-proof brush is suitable for being embedded in the groove.

[0020] A connecting sleeve is provided on the side of the filter screen facing the rotating motor, and the connecting sleeve is suitable for connecting with the output shaft.

[0021] A motor bracket is provided on the inner wall of the main body, and the motor bracket is suitable for fixing the rotating motor.

[0022] The motor bracket includes a fixing part and a plurality of support columns. The fixing part is cylindrical and is interference-connected with the rotating motor. The support columns are evenly arranged along the circumference of the fixing part and connect the fixing part and the inner wall of the main body.

[0023] An exhaust hole is also provided on the inner wall of the main body, and the exhaust hole is arranged adjacent to the vacuum motor.

[0024] An air outlet grille is also provided on the exhaust hole.

[0025] The main body is also provided with a vacuum motor mounting portion, which is suitable for fixing the vacuum motor.

[0026] The dust and dirt separation device also includes a motor filter, which is arranged adjacent to the wind wheel and at the front end position of the wind wheel along the air inlet direction.

[0027] The dust collecting chamber is provided with an opening, and the main body is connected with the dust collecting chamber through the opening.

[0028] The filter is arranged in a cup shape.

[0029] The present invention also provides a vacuum cleaner comprising the above-mentioned dust and dirt separation device;

[0030] A dust suction pipe, one end of which is connected to the air inlet of the dust separation device;

[0031] The vacuum cleaner head is connected to the other end of the vacuum tube.

[0032] The technical solution of the present invention has the following advantages:

[0033] 1. The present invention provides a dust separation device, comprising: a main body, in which a vacuum motor with a wind wheel is arranged; a dust collecting chamber, which is arranged on the main body, and an air inlet is provided on the dust collecting chamber; a rotating motor, which is arranged in the main body, and an output shaft is provided on the rotating motor, and a filter is provided on the output shaft; the filter also includes a dust shield, the inner diameter of which gradually increases in the direction away from the rotating motor, and the inner wall of the main body is also provided with an annular shield, and the inner edge of the annular shield is arranged adjacent to the outer edge of the dust shield.

[0034] By arranging a dust shield with a gradually changing inner diameter on the filter screen, and arranging the edge close to the inner wall of the dust collecting chamber, when the airflow carrying dust and dirt enters the dust collecting chamber, under the action of the vacuum motor with a wind wheel, the airflow will move toward the filter screen and collide with the inner wall of the dust shield. Since the filter screen is fixedly connected to the output shaft of the rotating motor, the dust shield on the filter screen will rotate under the drive of the rotating motor. The airflow impacting the dust shield and the dust therein will change direction under the action of friction and move with the dust shield, and large particles of dust and dirt will be released during the movement. The centrifugal force causes the large particles of dirt to move toward the inner wall of the dust collecting chamber, and the dust shield part continues to collide with the dust shield part, thus losing kinetic energy and remaining in the dust collecting chamber. In this way, the dust shield part is provided to reduce the impact force of large particles of dirt on other parts of the filter, thereby ensuring the filtering performance of the filter. At the same time, an annular shielding part is provided on the inner wall of the main body, which can further block the large particles of dirt that move to the inner wall of the dust collecting chamber under the action of centrifugal force, effectively preventing the dust from hitting the filter part with the open area, thereby ensuring the stability of the filtering performance of the filter, avoiding filtration leakage, and effectively realizing the complete filtration of the airflow.

[0035] 2. In the dust and dirt separation device provided by the present invention, the air inlet is arranged on the side wall of the dust collecting chamber.

[0036] With this arrangement, after the air flow flows into the dust collecting chamber, a circulation will be formed under the negative pressure of the vacuum motor, flowing toward the filter, and the center of the circulation is the axis of the output shaft. In this way, large particles of dirt move toward the inner wall of the dust collecting chamber under the action of centrifugation, and are blocked by the dust blocking part or the inner wall of the dust collecting chamber and remain in the dust collecting chamber, reducing the impact of large particles of dirt on the filter and ensuring the filtering performance of the filter.

[0037] 3. In the dust and dirt separation device provided by the present invention, the gap blocking part is a dust-proof brush.

[0038] By setting up a dust-proof brush, on the one hand, large particles of dust and dirt that move to the edge position under the action of centrifugal force can be blocked, thereby reducing the impact force on the dust shield. On the other hand, as a supplementary seal, it blocks the gap between the annular shielding part and the inner wall of the dust collecting chamber, preventing dust and dirt from entering the main body through the gap, thereby playing a role of supplementary sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 An exploded view of the structure of a dust and dirt separation device provided in an embodiment of the present invention;

[0041] Figure 2 for Figure 1 The structure of the dust separation device is shown in an exploded cross-sectional view;

[0042] Figure 3 for Figure 1 A schematic cross-sectional view of the structure of the dust and dirt separation device shown;

[0043] Figure 4 for Figure 3 A schematic cross-sectional view of the three-dimensional structure of the dust and dirt separation device shown;

[0044] Description of reference numerals:

[0045] 1-Main body; 2-Vacuum motor; 3-Dust collecting chamber; 31-Air inlet; 4-Rotating motor; 41-Output shaft; 5-Filter; 51-Filter part; 52-Dust shield; 12-Annular shield; 54-Connecting sleeve; 6-Dust-proof brush; 7-Motor bracket; 71-Fixed part; 72-Support column; 11-Exhaust hole. DETAILED DESCRIPTION

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0049] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0050] like Figure 1 - Figure 4 This embodiment provides a dust and dirt separation device, including a main body 1, a dust collecting chamber 3, a rotating motor 4 and a filter 5.

[0051] The main body 1 is cylindrical and includes a first main body and a second main body of different inner diameters. The first and second main bodies are integrally formed. The second main body is provided with an opening. A vacuum motor 2 with a wind wheel is provided inside the first main body, which can generate negative pressure when the vacuum motor 2 rotates. The dust collecting chamber 3 is cylindrical and connected to the main body 1. The dust collecting chamber 3 is provided with an air inlet 31. The rotating motor 4 is provided in the second main body. The rotating motor 4 is provided with an output shaft 41, and the output shaft 41 is provided with a filter 5. The filter 5 is cup-shaped and includes a dust shield 52. The inner diameter of the dust shield 52 gradually increases in the direction away from the rotating motor 4. The inner wall of the second main body is provided with an annular shield 12. The inner edge of the annular shield 12 is arranged adjacent to the outer edge of the dust shield 52. In this embodiment, the output shaft 41 is arranged coaxially with the rotating axis of the vacuum motor 2.

[0052] By arranging a dust shield 52 with a gradually changing inner diameter on the filter 5, and arranging the edge close to the inner wall of the dust collecting chamber 3, when the airflow carrying dust enters the dust collecting chamber 3, under the action of the vacuum motor 2 with the wind wheel, the airflow will move toward the filter 5 and collide with the inner wall of the dust shield 52. Since the filter 5 is fixedly connected to the output shaft 41 of the rotating motor 4, the dust shield 52 on the filter 5 will rotate under the drive of the rotating motor 4. The airflow that impacts the dust shield 52 and the dust therein will change direction under the action of friction and move with the dust shield 52. Large particles of dust will be caught in the process of movement. Centrifugal movement occurs, and the dust moves toward the inner wall of the dust collecting chamber 3, and continues to collide with the dust shield 52, losing kinetic energy, and remaining in the dust collecting chamber 3. In this way, the dust shield 52 is provided to reduce the impact force of large particles of dirt on the filter portion 51 on the filter 5, thereby ensuring the filtering performance of the filter 5. At the same time, an annular shielding portion 12 is provided on the inner wall of the main body 1, which can further block the large particles of dust that move to the inner wall of the dust collecting chamber 3 under the action of centrifugal force, effectively preventing dust from colliding with the filter portion 51 with the open area, ensuring the stability of the filtering performance of the filter 5, and avoiding leakage, thereby effectively achieving complete filtration of the airflow.

[0053] The air inlet 31 is provided on the side wall of the dust collecting chamber 3. In this embodiment, the air inlet 31 is provided tangentially along the inner wall of the dust collecting chamber 3. As a convertible embodiment, the extending direction of the air inlet 31 can also pass through the axis of the output shaft 41.

[0054] With this arrangement, after the air flow flows into the dust collecting chamber 3, a circulation flowing toward the filter 5 will be formed under the action of the negative pressure of the vacuum motor 2, and the center of the circulation is the axis where the output shaft 41 is located. In this way, large particles of dirt move toward the inner wall of the dust collecting chamber 3 under the action of centrifugation, and are blocked by the dust blocking portion 52 or the inner wall of the dust collecting chamber 3, and remain in the dust collecting chamber 3, thereby reducing the impact of large particles of dirt on the filter 5 and ensuring the filtering performance of the filter 5.

[0055] The filter 5 includes a filtering portion 51 and a dust shielding portion 52 .

[0056] The filter part 51 is arranged in a disc shape, connected to the output shaft 41 and vertically connected, and is provided with a plurality of opening areas for filtering dust and allowing airflow to pass through; the end with a smaller inner diameter of the dust shield part 52 is connected to the filter part 51, and the other end is connected to the annular shielding part 12.

[0057] In this embodiment, a gap blocking member is also provided on the inner wall of the annular shielding portion 12. In this embodiment, the gap blocking member is an annular dust brush 6, which is positioned below and adjacent to the dust shield 52. The dust brush 6 not only blocks large dust particles that move to the edge under the action of centrifugal force, reducing the impact on the annular shielding portion 12, but also acts as a supplementary seal, blocking the gap between the annular shielding portion 12 and the end of the dust shield 52, preventing dust from entering the main body 1 through the gap and thus providing a supplementary seal. As an alternative embodiment, the gap blocking member can also be a dust curtain or other structure.

[0058] As a convertible embodiment, the dust-proof brush 6 may also be omitted, and instead a sealing groove for accommodating and rotating the dust shield 52 may be provided on the inner wall of the main body 1 or the inner wall of the dust collecting chamber 3 .

[0059] In this embodiment, there are not too many restrictions on the specific structure of the filter part 51, and it can have through holes within the overall diameter range. As a preferred embodiment, the filter part 51 includes an apertured area and a non-apertured area, and the apertured area is arranged inside the non-apertured area. Specifically, the non-apertured area itself has an annular structure. A number of through holes are provided in the apertured area, and the angle between the longitudinal axis of the through hole and the longitudinal axis of the filter 5 gradually increases as it moves away from the center of the filter 5. By setting the axis of the through hole, the through hole itself can deviate from the direction of movement of dust and dirt by a certain angle, thereby preventing dust and dirt from directly entering the through hole and clogging the through hole.

[0060] A connecting sleeve 54 is provided on the side of the filter screen 5 facing the rotating motor 4 , and the connecting sleeve 54 is suitable for connecting to the output shaft 41 .

[0061] Specifically, the connecting sleeve 54 is disposed on the axis of the filter screen 5 and extends toward the direction of the rotating motor 4. The connection method between the connecting sleeve 54 and the output shaft 41 is not particularly limited, and may be an interference fit, a threaded connection, or a connection by drilling holes in the connecting sleeve 54 and the output shaft 41 and inserting pins into the holes.

[0062] A motor bracket 7 is provided on the inner wall of the main body 1, adapted to secure the rotating motor 4. The specific form of the motor bracket 7 is not limited, as long as it provides airflow and secures the rotating motor 4. In a preferred embodiment, the motor bracket 7 includes a fixed portion 71 and a plurality of support columns 72. The fixed portion 71 is cylindrical and has an interference fit with the rotating motor 4. The support columns 72 are evenly spaced along the circumference of the fixed portion 71 and connect the fixed portion 71 to the inner wall of the main body 1. This arrangement ensures stable support for the rotating motor 4 while minimizing airflow obstruction, ensuring stable airflow.

[0063] In this embodiment, the inner wall of the first body is further provided with a plurality of oblong-shaped exhaust holes 11, which are located adjacent to the vacuum motor 2. Clean air from the outside air, after being filtered to remove dust and impurities, is discharged through the exhaust holes 11. As an alternative embodiment, the exhaust holes 11 may also be provided elsewhere in the body 1, such as on the bottom wall of the second body or the first body.

[0064] In this embodiment, the exhaust hole 11 is further provided with an air outlet grille which can be opened or closed. The air outlet grille can be closed when the dust separation device is not in use to prevent external dust or mosquitoes from entering. As a convertible embodiment, the air outlet grille can also be not provided.

[0065] The main body 1 is also provided with a mounting portion for the vacuum motor 2, suitable for securing the vacuum motor 2. In this embodiment, the mounting portion for the vacuum motor 2 is a groove provided on the inner wall of the first main body. The groove is provided as an extension of the output shaft 41, and one end of the vacuum motor 2 is secured to the groove via an interference fit. The provision of the groove stabilizes the vacuum motor 2 and prevents it from shaking. As an alternative embodiment, the mounting portion for the vacuum motor 2 can also be a bracket structure for the vacuum motor 2 provided within the first main body.

[0066] The dust and dirt separation device further comprises a motor filter 5, which is arranged adjacent to the wind wheel and at the front end of the wind wheel along the air inlet direction.

[0067] In this embodiment, the dust collecting chamber 3 is cylindrical with a diameter larger than that of the main body 1, and can be detachably fitted on the main body 1, which is convenient for cleaning the dust collected inside the dust collecting chamber 3 and inspecting the filter 5. It can also be fixed by different connection methods such as snaps or threads. In this embodiment, it is a snap connection. An opening is provided on the dust collecting chamber 3, and the main body 1 is connected to the dust collecting chamber 3 through the opening. An air inlet 31 is provided on the dust collecting chamber 3. In this embodiment, the dust collecting chamber 3 is composed of a dust cup cover with an air inlet 31 and a dust collecting chamber 3 body with an opening.

[0068] This embodiment also provides a vacuum cleaner, comprising: the dust and dirt separation device, a vacuum tube, and a vacuum cleaner head. One end of the vacuum tube is connected to the air inlet 31 of the dust and dirt separation device, and the vacuum cleaner head is connected to the other end of the vacuum tube.

[0069] When the dust and dirt separation device is started, the vacuum motor 2 generates negative pressure, and the negative pressure will be sucked into the dust and dirt separation device through the dust suction pipe via the cleaner head, thereby collecting the dust and dirt themselves.

[0070] In this embodiment, a handle can be directly provided on the dust and dirt separation device, thereby forming a handheld vacuum cleaner. When vacuuming is required, the user can simply hold the handle to perform the vacuuming operation. As a variation, the dust and dirt separation device can be provided in a vacuum bucket. In this case, the user holds the vacuum hose, and the dust and dirt generated during the cleaning process will enter the vacuum bucket for collection. At the same time, a roller is provided in the vacuum bucket so that it moves with the user.

[0071] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. A dust and dirt separation device, characterized in that: include: A main body (1) is provided with a vacuum motor (2) with a wind wheel; A dust collecting chamber (3) is provided on the main body (1), and an air inlet (31) is provided on the dust collecting chamber (3); A rotating motor (4) is arranged in the main body (1), an output shaft (41) is arranged on the rotating motor (4), and a filter (5) is arranged on the output shaft (41); The filter (5) comprises: A filter portion (51) is connected to the output shaft (41) and is provided with a plurality of opening areas; A dust shield (52) is provided, wherein the inner diameter of the dust shield (52) gradually increases in a direction opposite to the rotating motor (4); an annular shielding portion (12) is further provided on the inner wall of the main body (1); an inner edge of the annular shielding portion (12) is arranged adjacent to an outer edge of the dust shield (52); one end of the dust shield (52) is connected to the filter portion (51), and the other end is arranged adjacent to and spaced apart from the annular shielding portion (12).

2. The dust separation device according to claim 1, characterized in that: The air inlet (31) is arranged on the side wall of the dust collecting chamber (3).

3. The dust separation device according to claim 2, characterized in that: A gap blocking portion is also provided on the inner wall of the annular shielding portion (12), and the gap blocking portion is provided on the lower side of the dust blocking portion (52) and is suitable for blocking the gap between the dust blocking portion (52) and the annular shielding portion (12).

4. The dust separation device according to claim 3, characterized in that: The gap blocking portion is a dust-proof brush (6).

5. The dust separation device according to claim 4, characterized in that: The annular shielding portion (12) comprises: a horizontal portion, the outer edge of which is connected to the inner wall of the main body (1); The vertical portion is arranged on the inner edge of the horizontal portion and is suitable for connecting the dust-proof brush (6).

6. The dust separation device according to claim 5, characterized in that: A groove is provided at a position on the vertical portion corresponding to the dust-proof brush (6), and the dust-proof brush (6) is suitable for being embedded in the groove.

7. The dust separation device according to any one of claims 1 to 6, characterized in that: A connecting sleeve (54) is provided on the side of the filter screen (5) facing the rotating motor (4), and the connecting sleeve (54) is suitable for connecting to the output shaft (41).

8. The dust separation device according to claim 7, characterized in that: A motor bracket (7) is provided on the inner wall of the main body (1), and the motor bracket (7) is suitable for fixing the rotating motor (4).

9. The dust separation device according to claim 8, characterized in that: The motor bracket (7) comprises a fixing portion (71) and a plurality of support columns (72). The fixing portion (71) is cylindrical and is interference-connected with the rotating motor (4). The support columns (72) are evenly arranged along the circumference of the fixing portion (71) and connect the fixing portion (71) and the inner wall of the main body (1).

10. The dust separation device according to claim 8 or 9, characterized in that: An exhaust hole (11) is also provided on the inner wall of the main body (1), and the exhaust hole (11) is arranged adjacent to the vacuum motor (2).

11. The dust separation device according to claim 10, characterized in that: An air outlet grille is also provided on the exhaust hole (11).

12. The dust separation device according to claim 8, characterized in that: The main body (1) is also provided with a vacuum motor (2) mounting portion suitable for fixing the vacuum motor (2).

13. The dust separation device according to claim 8, characterized in that: It also includes a motor filter (5), which is arranged adjacent to the wind wheel and at the front end of the wind wheel along the air intake direction.

14. The dust separation device according to claim 1, characterized in that: The dust collecting chamber (3) is provided with an opening, and the main body (1) is connected to the dust collecting chamber (3) via the opening.

15. The dust separation device according to claim 1, characterized in that: The filter screen (5) is arranged in a cup shape.

16. A vacuum cleaner, characterized in that: include: The dust and dirt separation device according to any one of claims 1 to 15; A dust suction pipe, one end of which is connected to the air inlet (31) of the dust and dirt separation device; The vacuum cleaner head is connected to the other end of the vacuum tube.

Images