Dust and dirt separation device and vacuum cleaner

Abstract

The present invention provides a dust and dirt separation device and a dust collector, wherein an air inlet is arranged on the side wall of the dust collecting chamber; an air inlet pipe is arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collecting chamber, and the other end is wound around and extends to the air inlet, and the extension direction of at least a portion of the air inlet pipe coincides with the tangent of the corresponding portion of the air inlet. By arranging the air inlet pipe, which is turned and wound around the air inlet, dust and dirt entering the dust collecting chamber through the air inlet pipe can flow along the circumference of the dust collecting chamber. Through the above-mentioned arrangement, dust and dirt entering the dust collecting chamber will not move directly toward the filter, thereby preventing dust and dirt from directly hitting the filter at high speed and causing damage to the filter.

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] Vacuum cleaners are very common electrical appliances on the market. A vacuum motor is installed in the vacuum cleaner to draw air laden with dust and dirt into the vacuum cleaner. After separation, the dust and dirt remain inside the vacuum cleaner, and the filtered clean air is discharged to the outside.

[0003] In the prior art, in order to achieve the separation operation of dust and dirt, a bag separator or a cyclone separator is usually provided inside the vacuum cleaner.

[0004] A bag-type separator primarily consists of a dust bag installed inside the vacuum cleaner. The bag has small holes that filter out particulate matter (dust) carried in the airflow passing through it. However, after a period of use, the holes in the bag quickly become clogged with dirt, causing a decrease in suction power. Once the bag is full, the old bag must be discarded and replaced with a new one, resulting in wasteful resources, environmental pollution, and increased user costs. Furthermore, the dust separation efficiency is low. In a cyclone separator, the dust-laden airflow forms a cyclone inside the vacuum cleaner. Due to the relatively large mass of the dust particles themselves, centrifugal force causes them to rub against the container walls and fall into the dust box, separating the dust and air. However, cyclones consume a high vacuum pressure, require a high-power vacuum motor, and are noisy during operation, impacting 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 operation of this separator, the airflow carrying dirt directly impacts the turntable, and the large particles in the dirt will damage the turntable and affect its balanced movement. 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 the dirt separator is easily damaged after being impacted by an airflow carrying large-mass particles.

[0008] To this end, the present invention provides a dust and dirt separation device, comprising: a main body, a vacuum motor is arranged inside; a wind wheel, detachably arranged on the vacuum motor; a dust collecting chamber, arranged on the main body, the dust collecting chamber is provided with an opening, the main body is connected to the dust collecting chamber through the opening, and the dust collecting chamber is provided with an air inlet; a rotating motor, arranged in the main body, an output shaft is provided on the rotating motor, and a filter is provided on the output shaft; the air inlet is arranged on the side wall of the dust collecting chamber; an air inlet pipe, arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collecting chamber, and the other end is wound around and extends to the air inlet, and the extension direction of at least a part of the air inlet pipe coincides with the tangent of the corresponding part of the air inlet.

[0009] The dust and dirt separation device provided by the present invention comprises an air inlet pipe including a straight pipe portion; a curved pipe portion, wherein the straight pipe portion is arranged at one end of the curved pipe portion; and a protruding portion arranged at the other end of the curved pipe, wherein the protruding portion is connected to the dust collecting chamber, and the tangent lines of the protruding portion and the corresponding parts of the air inlet coincide with each other.

[0010] In the dust and dirt separation device provided by the present invention, the axis of the protrusion along the length direction is parallel to the filter screen.

[0011] In the dust and dirt separation device provided by the present invention, the center of the filter is protruding toward the air inlet.

[0012] The dust and dirt separation device provided by the present invention, the filter screen includes an open area and a non-open area, and the open area is arranged inside the non-open area.

[0013] In the dust and dirt separation device provided by the present invention, a plurality of through holes are provided in the opening area, and the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter gradually increases in the direction away from the center of the filter.

[0014] The dust and dirt separation device provided by the present invention further includes a motor bracket, which is arranged on the inner wall of the main body, and the rotating motor is arranged at the center position of the motor bracket.

[0015] In the dust and dirt separation device provided by the present invention, an inner cylinder is provided on the inner wall of the main body, the motor bracket is provided on the inner wall of the inner cylinder, and the diameter of the filter screen is larger than the diameter of the inner cylinder.

[0016] The dust and dirt separation device provided by the present invention has exhaust holes arranged on the side walls of the main body.

[0017] The dust and dirt separation device provided by the present invention has a vacuum motor mounting portion provided on the main body.

[0018] In the dust and dirt separation device provided by the present invention, the vacuum motor mounting portion is a groove provided on the side wall of the first main body.

[0019] The dust and dirt separation device provided by the present invention further includes a motor filter, which is arranged on one end of the wind wheel close to the rotating motor.

[0020] The present invention provides a vacuum cleaner, comprising the dust and dirt separation device provided by the present invention; a dust suction pipe, one end of which is arranged to be connected to the air inlet pipe position of the dust and dirt separation device; and a vacuum cleaner head, which is connected to the other end of the dust suction pipe.

[0021] The vacuum cleaner provided by the present invention further includes: a handle connected to the dust collecting chamber, and the axis of the straight pipe portion of the air inlet pipe and the axis of the dust collecting chamber are intersecting straight lines or parallel straight lines in space.

[0022] The technical solution of the present invention has the following advantages:

[0023] 1. The dust and dirt separation device provided by the present invention has an air inlet arranged on the side wall of the dust collecting chamber; an air inlet pipe is arranged on the air inlet, one end of the air inlet pipe extends to the outside of the dust collecting chamber, and the other end is wound around and extends to the air inlet, and the extension direction of at least a part of the air inlet pipe coincides with the tangent of the corresponding part of the air inlet.

[0024] By setting up an air intake pipe, which is turned and arranged around the air inlet, the dust and dirt entering the dust collecting chamber through the air intake pipe can flow along the circumference of the dust collecting chamber. Through the above-mentioned setting method, the dust and dirt entering the dust collecting chamber will not move directly toward the filter, thereby avoiding the dust and dirt directly hitting the filter at high speed and causing damage to the filter.

[0025] Furthermore, because the dust is redirected toward the inner wall of the dust collection chamber by the air intake duct, it can effectively prevent dust from entering the filter and clogging it. This arrangement ensures that the filter maintains low wind resistance, thereby reducing the power of the vacuum motor, thereby reducing the weight of the battery and increasing its battery life. It can also effectively reduce the space occupied by the battery, ultimately contributing to the miniaturization and lightweighting of the dust separation device itself.

[0026] More importantly, since the power of the vacuum motor itself becomes smaller, the noise generated by the vacuum motor during operation can be effectively reduced, thereby improving the user experience.

[0027] 2. The dust and dirt separation device provided by the present invention, the air inlet pipe includes a straight pipe portion; a curved pipe portion, the straight pipe portion is arranged at one end of the curved pipe portion; and a protruding portion is arranged at the other end of the curved pipe, the protruding portion is connected to the dust collecting chamber, and the tangent of the protruding portion and the corresponding portion of the air inlet coincide with each other.

[0028] Through the above-mentioned arrangement, the airflow flowing into the dust separation device through the straight pipe portion can enter the dust collecting chamber through the protrusion and flow into the dust collecting chamber in a tangential state with the dust collecting chamber.

[0029] 3. In the dust separation device provided by the present invention, the axis of the protrusion along the length direction is parallel to the filter screen.

[0030] With the above arrangement, the airflow flowing out through the protrusion will not directly act on the filter, thereby helping to prevent dust from directly hitting the filter and causing damage to the filter.

[0031] 4. In the dust and dirt separation device provided by the present invention, the vacuum motor mounting portion is a groove provided on the side wall of the first main body. The groove can stabilize the vacuum motor itself and prevent the vacuum motor from shaking.

[0032] 5. In the dust and dirt separation device provided by the present invention, a plurality of through holes are provided in the opening area, and the angle between the longitudinal axis of the through holes and the longitudinal axis of the filter gradually increases along the direction away from the center of the filter.

[0033] By setting the axis of the through hole, the through hole itself can deviate from the movement direction of dust and dirt by a certain angle, thereby preventing dust and dirt from directly entering the through hole and causing blockage of the through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 A schematic structural diagram of the vacuum cleaner provided by the present invention;

[0036] Figure 2 An exploded view of the dust and dirt separation device provided by the present invention;

[0037] Figure 3 This is a cross-sectional view of the dust and dirt separation device provided by the present invention.

[0038] Description of reference numerals:

[0039] 1-Main body; 11-First main body; 111-Exhaust hole; 12-Second main body; 13-Inner cylinder; 14-Vacuum motor mounting part; 2-Vacuum motor; 3-Wind wheel; 31-Motor filter; 4-Dust collecting chamber; 5-Air inlet; 51-Inlet pipe; 6-Rotating motor; 61-Rotating shaft; 7-Filter; 71-Connecting sleeve; 8-Motor bracket; 9-Dust suction pipe; 10-Vacuum cleaner head; 15-Handle. DETAILED DESCRIPTION

[0040] 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.

[0041] 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.

[0042] 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.

[0043] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0044] Example 1

[0045] This embodiment provides a dust and dirt separation device, such as Figure 2-Figure 3 Shown, including:

[0046] The main body 1 has a vacuum motor 2 disposed therein;

[0047] A wind wheel 3 is detachably arranged on the vacuum motor 2;

[0048] Specifically, the main body is cylindrical in shape. The vacuum motor 2 is connected to an external power source, and the center of the wind wheel 3 is connected to the output shaft of the vacuum motor. The output shaft and the center of the wind wheel 3 are detachably connected, either through an interference fit or a threaded connection. When the wind wheel 3 rotates, negative pressure is generated within the main body, and the external wind carries dust and dirt into the dust separation device.

[0049] Furthermore, in order to improve the dust and dirt filtering effect, the dust and dirt separation device also includes a motor filter 31, which is arranged on one end of the wind wheel 3 near the rotating motor 6. Specifically, the motor filter 31 itself is fixedly connected to one end of the wind wheel 3. When the wind wheel 3 rotates, the motor filter 31 will move synchronously with the wind wheel 3.

[0050] A dust collecting chamber 4 is provided on the main body. The dust collecting chamber 4 is provided with an opening. The main body is connected to the dust collecting chamber 4 through the opening. The dust collecting chamber 4 is provided with an air inlet 5.

[0051] Specifically, the dust collecting chamber 4 and the main body can be connected in a detachable manner or through an integrated structure.

[0052] The main body and the dust collecting chamber 4 can be connected by a snap fastener. Specifically, the inner diameter of the main body is smaller than the inner diameter of the dust collecting chamber 4, so the main body itself can be nested into the dust collecting chamber 4.

[0053] In this embodiment, when the vacuum motor is started, negative pressure is generated inside the vacuum motor, and the negative pressure further drives external dust and dirt into the dust collecting chamber 4 through the air inlet 5.

[0054] The rotating motor 6 is provided in the main body, the rotating motor 6 is provided with a rotating shaft 61, and the output shaft is provided with a filter 7.

[0055] An air inlet 5 is provided on the side wall of the dust collecting chamber 4;

[0056] The air inlet pipe 51 is arranged on the air inlet 5, one end of the air inlet pipe extends to the outside of the dust collecting chamber 4, and the other end is wrapped around and extends to the air inlet 5. The extension direction of at least a part of the air inlet pipe 51 coincides with the tangent of the corresponding part of the air inlet 5.

[0057] By setting up the air intake pipe 51, which is turned and arranged around the air inlet, the dust and dirt entering the dust collecting chamber through the air intake pipe can flow along the circumference of the dust collecting chamber. Through the above-mentioned setting method, the dust and dirt entering the dust collecting chamber will not move directly toward the filter screen, thereby avoiding the dust and dirt directly hitting the filter screen at high speed and causing damage to the filter screen.

[0058] In this embodiment, the air inlet pipe 51 includes a straight pipe portion; a curved pipe portion, the straight pipe portion is arranged at one end of the curved pipe portion; and a protruding portion is arranged at the other end of the curved pipe, the protruding portion is connected to the dust collecting chamber, and the tangent line of the protruding portion and the corresponding part of the air inlet 5 coincide with each other.

[0059] Through the above-mentioned arrangement, the airflow flowing into the dust separation device through the straight pipe portion can enter the dust collecting chamber through the protrusion and flow into the dust collecting chamber in a tangential state with the dust collecting chamber.

[0060] Furthermore, in this embodiment, the axis of the protrusion along the length direction is parallel to the filter screen 7.

[0061] With the above arrangement, the airflow flowing out through the protrusion will not directly act on the filter, thereby helping to prevent dust from directly hitting the filter and causing damage to the filter.

[0062] In this embodiment, the shape of the filter 7 itself is not limited, and it can be set in a plate-shaped structure. As a preferred embodiment, the center of the filter 7 is protruded toward the air inlet 5.

[0063] In this embodiment, the center of the filter is controlled to protrude toward the air inlet 5. When the filter rotates, the airflow carrying dust and dirt flows out of the air inlet pipe and enters the dust collecting chamber 4, and collides with the filter. Since the center of the filter protrudes, the side of the filter will be set at an obtuse angle to the flow direction of the dust and dirt. When the dust and dirt collide with the side of the filter, the filter will exert a certain friction force on the dust and dirt, so that the dust and dirt moves with the filter. At the same time, the dust and dirt will change direction under the guidance of the filter, and move toward the side wall of the dust collecting chamber 4 under the action of the centrifugal force of the filter's rotation.

[0064] By controlling the central projection of the filter and the extension direction of at least a portion of the air inlet pipe to coincide with the tangent line of the corresponding portion of the air inlet, the impact of dust entering the dust collection chamber on the filter itself can be effectively reduced, thereby effectively improving the stability of the filter. Ultimately, this helps to maintain low wind resistance of the filter, thereby reducing the power of the vacuum motor, thereby reducing the weight of the battery, increasing battery life, and effectively reducing the space occupied by the battery, ultimately contributing to the miniaturization and lightweighting of the dust separation device itself.

[0065] In this embodiment, the shape of the filter screen 7 itself is not particularly limited. Along the longitudinal cross-section of the filter screen, its cross-section can be triangular or arc-shaped. From a structural perspective, the filter screen can be a simple sheet structure or a hollow, enclosed structure. As a preferred embodiment, in this embodiment, the angle between the tangent line of the filter screen edge and the longitudinal axis is 45 degrees. In the most preferred embodiment, the filter screen is conical.

[0066] In this embodiment, the arrangement of the through holes in the filter screen is not particularly limited; through holes can be provided within the overall diameter range. As a preferred embodiment, the filter screen includes a perforated region and a non-perforated region, wherein the perforated region is disposed within the non-perforated region. Specifically, the non-perforated region itself is an annular structure.

[0067] There is no limitation on the shape of the through hole itself, which can be a circular hole or a non-circular hole structure. As long as the dust itself can be blocked, it is sufficient. At the same time, there is no limitation on the axis of the through hole on the filter screen, and the axis of the through hole can be set parallel to the longitudinal axis of the filter screen. As a preferred embodiment, the angle between the longitudinal axis of the through hole and the longitudinal axis of the filter screen gradually increases as it moves away from the center of the filter screen. By setting the axis of the through hole, the through hole itself can deviate from the direction of movement of the dust by a certain angle, thereby preventing the dust from directly entering the through hole and clogging the through hole.

[0068] In this embodiment, in order to achieve the connection operation of the filter screen, a connecting sleeve 71 is provided on the side of the filter screen close to the rotating motor 6, and the connecting sleeve 71 is suitable for connecting to the output shaft.

[0069] Specifically, the connecting sleeve 71 extends toward the inside of the filter screen and is positioned along the filter screen's axis. The connection between the connecting sleeve 71 and the output shaft of the rotating motor 6 is not particularly limited and may be a tightening fit, a threaded connection, or a connection achieved by drilling holes in the connecting sleeve 71 and the output shaft and inserting pins into the holes.

[0070] In this embodiment, there is no excessive limitation on the position of the air inlet 5 on the dust collecting chamber 4. The air inlet 5 can be arranged on the axis of the dust collecting chamber 4 or offset from the axis of the dust collecting chamber 4. As a preferred embodiment, Figure 2 As shown, the axis of the air inlet 5 and the axis of the filter are arranged to coincide with each other.

[0071] In this embodiment, a motor bracket 8 is further included, which is arranged on the inner wall of the main body. The rotating motor 6 is arranged at the center position of the motor bracket 8.

[0072] Specifically, the motor bracket 8 itself is perpendicular to the axis of the main body, and a through hole is provided in the center of the motor bracket 8, into which the rotary motor 6 itself is embedded, thereby achieving the installation operation of the rotary motor 6. The motor bracket 8 can be integrally injection molded with the main body, or it can be connected separately at a later stage.

[0073] In this embodiment, an inner cylinder 13 is provided on the inner wall of the main body, the motor bracket 8 is provided on the inner wall of the inner cylinder 13 , and the diameter of the filter screen is larger than the diameter of the inner cylinder 13 .

[0074] The inner cylinder 13 provides a certain degree of cushioning and shock absorption. This creates an air chamber on the outside of the inner cylinder 13, dampening vibrations transmitted from the inner cylinder 13. This prevents vibrations from directly affecting the user's hand and impacting their experience. Specifically, the inner cylinder 13 is integrally injection-molded onto the main body.

[0075] In this embodiment, in order to facilitate the disassembly and assembly of the vacuum motor and the rotating motor 6, the main body itself is provided with a split structure, and the main body includes: a first main body 11, in which the vacuum motor is arranged; a second main body 12, which is detachably connected to the first main body 11, and in which the rotating motor 6 and the motor bracket 8 are arranged.

[0076] Specifically, there is no limitation on the connection method between the first body 11 and the second body 12. They can be connected by snap fasteners, or a fixing strip can be provided on the outside of the connection seam between the two to connect the first body 11 and the second body 12 into one.

[0077] In this embodiment, an exhaust hole 111 is provided on the first body 11. By providing the exhaust hole 111, air entering the interior of the body can be quickly discharged, thereby facilitating the balance of air pressure inside and outside the body. The exhaust hole 111 can be provided on the side wall of the first body 11, or it can be provided at a position opposite the first body 11 and the filter screen. As a preferred embodiment, the exhaust hole 111 is provided on the side wall of the first body 11. This arrangement can prevent the air flowing out through the exhaust hole 111 from directly blowing onto the user's hands and affecting the user's experience.

[0078] Furthermore, in order to achieve installation stability of the vacuum motor inside the main body, a vacuum motor mounting portion 14 is provided on the first main body 11 .

[0079] The arrangement of the vacuum motor mounting portion 14 is not particularly limited. As a preferred embodiment, the vacuum motor mounting portion 14 is a groove provided on the side wall of the first body 11. Specifically, the vacuum motor itself is embedded in the groove by means of a tightening fit, thereby achieving stable installation.

[0080] Example 2

[0081] This embodiment provides a vacuum cleaner, such as Figure 1 Shown, including:

[0082] The dust and dirt separation device provided in Example 1;

[0083] A dust suction pipe 9, one end of which is connected to the air inlet pipe 51 of the dust separation device;

[0084] The vacuum cleaner head 10 is connected to the other end of the suction tube 9. The vacuum cleaner head 10 contacts areas requiring cleaning, such as the floor, sofas, and corners, thereby collecting dust, debris, hair, and other materials from the surrounding environment. When the dust and dirt separation device is activated, negative pressure is generated. This negative pressure is drawn through the vacuum cleaner head 10 and into the suction tube 9, where it is collected.

[0085] In this embodiment, Figure 1 As shown, a handle 15 can be directly provided on the dust separation device to form a handheld vacuum cleaner. When vacuuming is required, the user can simply hold the handle to perform the vacuuming operation.

[0086] As a variation, the dust and dirt separation device can be set in the dust bucket. At this time, the user holds the dust tube 9, and the dust and dirt generated during the cleaning process will enter the dust bucket for collection. At the same time, a roller is set in the dust bucket so that it can move with the user.

[0087] In this embodiment, Figure 1 and Figure 3 As shown, it also includes a handle 15 connected to the dust collecting chamber, and the axis of the straight pipe portion of the air inlet pipe 51 and the axis of the dust collecting chamber are intersecting straight lines or parallel straight lines in space.

[0088] 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 readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising 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) having a vacuum motor (2) disposed therein; A wind wheel (3) is detachably arranged on the vacuum motor (2); A dust collecting chamber (4) is provided on the main body, an opening is provided on the dust collecting chamber (4), the main body is connected to the dust collecting chamber (4) via the opening, and an air inlet (5) is provided on the dust collecting chamber (4); A rotating motor (6) is arranged in the main body, an output shaft is arranged on the rotating motor, and a filter (7) is arranged on the output shaft; An air inlet (5) is arranged on a side wall of the dust collecting chamber (4); An air inlet pipe (51) is provided on the air inlet (5), one end of the air inlet pipe extends to the outside of the dust collecting chamber (4), and the other end is wound around and extends to the air inlet (5), and the extension direction of at least a portion of the air inlet pipe (51) coincides with a tangent line of a corresponding portion of the air inlet (5); The air intake pipe (51) includes straight pipe department; a curved pipe portion, wherein the straight pipe portion is provided at one end of the curved pipe portion; And a protrusion is provided at the other end of the bent pipe, the protrusion is connected to the dust collecting chamber, and the tangent lines of the protrusion and the corresponding parts of the air inlet (5) coincide with each other.

2. The dust separation device according to claim 1, characterized in that: The axis of the protrusion along the length direction is parallel to the filter screen (7).

3. The dust separation device according to any one of claims 1-2, characterized in that: The center of the filter screen is arranged to protrude toward the air inlet (5).

4. The dust separation device according to claim 3, characterized in that: The filter screen includes an open area and a non-open area, and the open area is arranged inside the non-open area.

5. The dust separation device according to claim 4, characterized in that: A plurality of through holes are provided in the opening area, and along a direction away from the center of the filter screen, an angle between a longitudinal axis of the through holes and a longitudinal axis of the filter screen gradually increases.

6. The dust separation device according to any one of claims 1-2, characterized in that: It also includes a motor bracket (8) arranged on the inner wall of the main body (1), and the rotating motor (6) is arranged at the center of the motor bracket (8).

7. The dust separation device according to claim 6, characterized in that: An inner cylinder (13) is provided on the inner wall of the main body, the motor bracket (8) is provided on the inner wall of the inner cylinder (13), and the diameter of the filter screen is larger than the diameter of the inner cylinder (13).

8. The dust separation device according to claim 1, characterized in that: An exhaust hole (111) is provided on the side wall of the main body.

9. The dust separation device according to any one of claims 1-2, characterized in that: A vacuum motor mounting portion (14) is provided on the main body.

10. The dust separation device according to claim 9, characterized in that: The vacuum motor mounting portion (14) is a groove provided on the side wall of the main body.

11. The dust separation device according to claim 1, characterized in that: It also includes a motor filter (31) which is arranged on one end of the wind wheel (3) close to the rotating motor.

12. A vacuum cleaner, characterized in that: include The dust separation device according to any one of claims 1 to 11; A dust suction pipe (9), one end of which is connected to the air inlet pipe (51) of the dust and dirt separation device; The vacuum cleaner head (10) is connected to the other end of the vacuum tube (9).

13. The vacuum cleaner according to claim 12, characterized in that Also includes: The handle (15) is connected to the dust collecting chamber (4), and the axis of the straight pipe portion of the air inlet pipe (51) and the axis of the dust collecting chamber (4) are intersecting straight lines or parallel straight lines in space.

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