Dust and dirt separation device and vacuum cleaner

Abstract

The present invention provides a dust separation device and a dust collector, wherein an air inlet is arranged on the side walls of the dust collecting chamber on both sides of the filter screen. At the portion where the air inlet is connected to the dust collecting chamber, the tangent of at least a portion of the air inlet coincides with the tangent of the corresponding portion of the dust collecting chamber. The filter screen itself moves at high speed, and the airflow carrying fine dust enters the dust collecting chamber and contacts the high-speed rotating filter screen. The filter screen applies friction to the dust particles in the airflow, causing the dust particles to rotate with the filter screen. Under the action of the rotating centrifugal force, the dust particles move toward the outer edge of the filter screen, thereby reducing the probability of the dust particles blocking the filter screen, which helps to keep the air duct unobstructed. The dust particles separated from the filter screen continue to move under the action of the negative pressure generated by the centrifugal fan, and eventually fall to the bottom of the dust collecting chamber.

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, in the design of this separator, the airflow carrying dirt directly hits the turntable. The large mass 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, in which a vacuum motor is arranged; a wind wheel, detachably arranged on the vacuum motor; a dust collecting chamber, detachably 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 filter motor is arranged in the main body, the filter motor is provided with an output shaft, and the output shaft is provided with a filter; the air inlet is arranged on the side wall of the dust collecting chamber on the side of the filter, and at the position where the air inlet is connected to the dust collecting chamber, the tangent of at least a part of the air inlet coincides with the tangent of the corresponding position of the dust collecting chamber.

[0009] The dust and dirt separation device provided by the present invention, the air inlet portion includes a cylindrical tube and a protruding portion arranged at one end of the cylindrical tube, and the protruding portion is connected to the dust collecting chamber.

[0010] In the dust and dirt separation device provided by the present invention, the air inlet is arranged on a side of the dust collecting chamber close to the main body.

[0011] The dust and dirt separation device provided by the present invention has a bracket provided inside the main body, and the filter motor is provided on the bracket.

[0012] In the dust and dirt separation device provided by the present invention, a connecting column is provided on the bracket at a position corresponding to the filter motor, and the filter motor is provided on the connecting column.

[0013] In the dust and dirt separation device provided by the present invention, the center of the filter is protruded in a direction away from the filter motor.

[0014] In the dust and dirt separation device provided by the present invention, a connecting sleeve is provided on the portion of the filter screen that is connected to the filter screen motor, and the output shaft of the filter screen motor is provided on the connecting sleeve.

[0015] In the dust and dirt separation device provided by the present invention, the filter screen is arranged in a cone shape.

[0016] In the dust and dirt separation device provided by the present invention, a groove is provided on the main body at a position corresponding to the vacuum motor, and the vacuum motor is suitable for being embedded in the groove.

[0017] The dust and dirt separation device provided by the present invention has exhaust holes arranged on the side walls of the main body.

[0018] In the dust and dirt separation device provided by the present invention, threads are respectively provided at positions corresponding to the main body and the dust collecting chamber, and a sealing ring is provided on the side of the main body and / or the dust collecting chamber where the threads are close to the filter screen.

[0019] 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 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.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The present invention provides a dust and dirt separation device, comprising: a main body, wherein a vacuum motor is arranged inside; a blower wheel, which is detachably arranged on the vacuum motor; a dust collecting chamber, which is detachably 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 filter motor, which is arranged in the main body, the filter motor is provided with an output shaft, and the output shaft is provided with a filter; the air inlet is arranged on the side wall of the dust collecting chamber on the side of the filter, and at the position where the air inlet is connected to the dust collecting chamber, the tangent of at least a part of the air inlet coincides with the tangent of the corresponding position of the dust collecting chamber.

[0022] In the present invention, the air inlet is arranged on the side walls of the dust collecting chamber on both sides of the filter screen. At the position where the air inlet is connected to the dust collecting chamber, the tangent of at least a part of the air inlet coincides with the tangent of the corresponding position of the dust collecting chamber.

[0023] With this setup, the filter itself moves at high speed, and an airflow carrying fine dust enters the dust collection chamber and comes into contact with the rapidly rotating filter. The filter exerts friction on the dust particles in the airflow, causing them to rotate with the filter. The centrifugal force of the rotation causes the dust particles to move toward the outer edges of the filter, reducing the chance of dust particles blocking the filter and helping to keep the air duct unobstructed. Dust particles separated from the filter continue to move due to the negative pressure generated by the centrifugal fan, eventually falling to the bottom of the dust collection chamber.

[0024] At the same time, since the dust particles themselves enter the dust collecting chamber from the side and are quickly driven to the position of the filter after contacting the filter, they can avoid direct impact with the filter, thereby effectively reducing the risk of dust particles colliding with the filter and causing damage to the filter.

[0025] Furthermore, this configuration ensures the filter maintains low wind resistance, thereby reducing the power consumption of the vacuum motor. This in turn reduces battery weight, increases battery life, and effectively reduces the space occupied by the battery, ultimately contributing to the miniaturization and lightweighting of the dust and dirt separation device itself. More importantly, the reduced power consumption of the vacuum motor effectively reduces the noise generated during operation, thereby improving the user experience.

[0026] 2. The present invention provides a dust and dirt separation device, wherein the air inlet portion includes a cylindrical tube and a protrusion provided at one end of the cylindrical tube, the protrusion being connected to the dust collecting chamber. By providing the protrusion, a tangential air intake operation into the dust collecting chamber can be achieved.

[0027] 3. The present invention provides a dust and dirt separation device, wherein a groove is provided on the main body at a position corresponding to the vacuum motor, and the vacuum motor is suitable for being embedded in the groove.

[0028] By providing the grooves, the vacuum motor itself can be stabilized and prevented from shaking.

[0029] 4. The present invention provides a dust and dirt separation device, wherein the side wall of the main body is provided with an exhaust hole. By providing the exhaust hole on the side wall, the airflow discharged through the main body can be prevented from directly blowing onto the user's body or hands, affecting the user's experience.

[0030] 5. The present invention provides a dust and dirt separation device, wherein the main body and the dust collecting chamber are respectively provided with threads at positions corresponding to the main body and the dust collecting chamber, and a sealing ring is provided on the side of the main body and / or the dust collecting chamber where the threads are close to the filter screen.

[0031] By setting a thread, quick disassembly and assembly between the main body and the dust collecting chamber can be achieved. At the same time, by setting a sealing ring, external wind can be prevented from entering the dust and dirt separation device through the connection between the main body and the dust collecting chamber, causing adverse effects on the negative pressure inside the dust and dirt separation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 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.

[0033] Figure 1 A cross-sectional view of the dust and dirt separation device provided by the present invention;

[0034] Figure 2 An exploded view of the dust and dirt separation device provided by the present invention;

[0035] Figure 3 This is a second cross-sectional view of the dust separation device provided by the present invention.

[0036] Description of reference numerals:

[0037] 1-Main body; 11-Exhaust hole; 2-Vacuum motor; 4-Dust collecting chamber; 5-Air inlet; 51-Columnar tube; 52-Protrusion; 6-Filter motor; 7-Filter; 71-Connecting sleeve; 72-Filter hole; 8-Bracket. DETAILED DESCRIPTION

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] Example 1

[0043] This embodiment provides a dust and dirt separation device, such as Figure 1-Figure 3 As shown, including:

[0044] The main body 1 has a vacuum motor 2 disposed therein;

[0045] The wind wheel is detachably mounted on the vacuum motor 2. In this embodiment, the wind wheel is integrated into the vacuum motor, and a through hole is provided on the housing of the vacuum motor 2 to achieve the air suction operation.

[0046] Specifically, the main body 1 is cylindrical in shape, the vacuum motor 2 is connected to an external power source, and the center of the wind wheel is connected to the output shaft of the vacuum motor 2. The output shaft and the center of the wind wheel are detachably connected, either by interference fit or threaded connection. When the wind wheel rotates, it generates negative pressure within the main body 1, and the external wind carries dust and dirt into the dust separation device.

[0047] A dust collecting chamber 4 is detachably provided on the main body 1 , the dust collecting chamber 4 is provided with an opening, the main body 1 is connected to the dust collecting chamber 4 through the opening, and the dust collecting chamber 4 is provided with an air inlet 5;

[0048] Specifically, the connection method between the dust collecting chamber 4 and the main body 1 is not limited, and they can be connected by snap fasteners. As a preferred embodiment, threads are respectively provided at the corresponding parts of the main body 1 and the dust collecting chamber 4, and a sealing ring is provided on the side of the thread close to the filter screen on the main body 1 and / or the dust collecting chamber 4. Preferably, an external thread is provided on the outer wall of the main body 1, and an internal thread is provided on the inner wall of the dust collecting chamber 4. At the same time, a sealing ring is provided on at least one of the main body 1 and the dust collecting chamber 4, and the sealing ring is provided on the inner side of the internal thread or the external thread, which can prevent the outside wind from entering the dust and dirt separation device through the connection between the main body 1 and the dust collecting chamber 4, causing adverse effects on the negative pressure inside the dust and dirt separation device. At the same time, it can also prevent the dust and dirt located in the main body 1 from overflowing to the outside through the connection between the main body 1 and the dust collecting chamber 4.

[0049] In this embodiment, when the vacuum motor 2 is started, negative pressure is generated inside the vacuum motor 2 , and the negative pressure further drives external dust and dirt into the dust collecting chamber 4 through the air inlet 5 .

[0050] A filter motor 6 is provided in the main body 1 , and an output shaft is provided on the filter motor 6 , a filter 7 is provided on the output shaft, and a filter hole 72 is provided on the filter 7;

[0051] The filter is set downstream of the wind flow path. After the external wind enters the dust separation device, it will first come into contact with the filter. The filter itself plays the role of separating dust and air.

[0052] In this embodiment, the air inlet 5 is arranged on the side wall of the dust collecting chamber 4 on one side of the filter screen. Figure 2As shown, the air inlet 5 is arranged on the left side of the dust collecting chamber 4. At the portion where the air inlet 5 is connected to the dust collecting chamber 4, the tangent of at least a portion of the air inlet 5 coincides with the tangent of the corresponding portion of the dust collecting chamber 4.

[0053] Furthermore, the air inlet portion 5 itself can be provided with multiple groups, such as being provided on both side walls of the dust collecting chamber 4 at the same time.

[0054] In this embodiment, the structure of the filter screen 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, the filter screen is tapered, with the angle between the tangent line of the filter screen edge and the longitudinal axis being 45 degrees.

[0055] Since the dust particles enter the dust collecting chamber from the side and are quickly driven to the position of the filter after contacting the filter, they can avoid direct impact with the filter, thereby effectively reducing the risk of dust particles colliding with the filter and causing damage to the filter.

[0056] With this arrangement, the filter itself moves at high speed, and the airflow carrying fine dust enters the dust collection chamber 4 and contacts the high-speed rotating filter. The filter exerts friction on the dust particles in the airflow, causing them to rotate with the filter. The centrifugal force of the rotation causes the dust particles to move toward the outer edges of the filter, reducing the chance of dust particles blocking the filter and helping to keep the air duct unobstructed. Dust particles separated from the filter continue to move due to the negative pressure generated by the centrifugal fan, eventually falling to the bottom of the dust collection chamber 4.

[0057] The above arrangement ensures that the filter maintains low wind resistance, thereby reducing the power of the vacuum motor 2. This in turn reduces the weight of the battery, increases battery life, and effectively reduces the space occupied by the battery, ultimately contributing to the miniaturization and lightweighting of the dust and dirt separation device itself. More importantly, since the power of the vacuum motor 2 itself is reduced, the noise generated during operation can be effectively reduced, thereby improving the user experience.

[0058] In this embodiment, in order to realize the air intake operation to the dust collecting chamber 4, the air intake portion 5 includes a cylindrical tube 51 and a protrusion 52 provided at one end of the cylindrical tube 51, and the protrusion 52 is connected to the dust collecting chamber 4. By providing the protrusion 52, a tangential air intake operation into the dust collecting chamber 4 can be realized.

[0059] There are no particular restrictions on the configuration of the protrusion 52 . The protrusion 52 may be in a regular shape, such as a regular arc shape, or in an irregular shape, such as a protrusion or depression in a portion of the protrusion 52 .

[0060] In this embodiment, Figure 1 As shown, the air inlet 5 is arranged on the side of the dust collecting chamber 4 close to the main body 1. Through the above arrangement, the air inlet 5 itself is relatively close to the filter 7, so the moving distance inside the dust collecting chamber 4 is relatively small, and the acceleration distance is relatively short. Ultimately, the kinetic energy of dust particles when interacting with the filter 7 is small, which helps to reduce the impact of dust particles on the filter 7 itself.

[0061] That is, the air inlet portion 5 itself is arranged at a position close to the upper part of the dust collecting chamber 4 .

[0062] In this embodiment, in order to realize the installation operation of the filter motor 6 itself, as shown in FIG. Figure 3 As shown, a bracket 8 is provided inside the main body 1 , and the filter motor 6 is provided on the bracket 8 .

[0063] Specifically, the bracket 8 is connected to the inner wall of the main body 1 around the bracket 8, and the bracket 8 and the main body 1 can be set in an integral manner. A connecting hole is connected at the center of the bracket 8, and the filter motor 6 itself is installed at the connecting hole position.

[0064] In this embodiment, to improve the connection stability between the bracket 8 and the filter motor 6, a connecting post is provided on the bracket 8 at a location corresponding to the filter motor 6, and the filter motor 6 is mounted on the connecting post. Specifically, the connecting post extends toward the vacuum motor 2. The length of the connecting post itself is not limited, as long as it can facilitate assembly of the vacuum motor 2.

[0065] In this embodiment, in order to achieve a stable connection between the filter and the filter motor 6, a connecting sleeve 71 is provided on the portion of the filter connected to the filter motor 6, and the output shaft of the filter motor 6 is provided on the connecting sleeve 71.

[0066] The connecting sleeve 71 itself is hollowed out, and the connection method between the connecting sleeve 71 and the output shaft is not limited. A pin can be provided between the connecting sleeve 71 and the output shaft for connection, or the connecting sleeve 71 and the output shaft can be connected by a thread.

[0067] In this embodiment, to enhance the stability of the vacuum motor 2 within the main body 1, a groove is provided on the main body 1 at a location corresponding to the vacuum motor 2. The vacuum motor 2 is adapted to fit within the groove. Specifically, the vacuum motor 2 is inserted into the groove using an expansion fit, achieving stable installation. The groove can be integrally formed on the sidewall of the main body 1 or installed within the main body 1 through post-processing.

[0068] Furthermore, exhaust holes 11 are provided on the side walls of the main body 1. By providing exhaust holes 11 on the side walls, the airflow discharged through the main body 1 can be prevented from directly blowing onto the user's body or hands, thereby affecting the user's experience. The shape and number of exhaust holes 11 are not limited, as long as they can achieve the discharge of air.

[0069] Example 2

[0070] This embodiment provides a vacuum cleaner, comprising: the dust and dirt separation device provided in Example 1; a dust suction pipe, one end of which is arranged to be connected to the air inlet 5 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.

[0071] The vacuum cleaner head will come into contact with the floor, sofa, corners, etc. When the dust separation device is activated, negative pressure is generated, which will be sucked into the dust separation device through the vacuum cleaner head and the dust through the suction pipe, thereby collecting the dust itself.

[0072] In this embodiment, a handle can be directly provided on the dust and dirt separation device to form a handheld vacuum cleaner. When vacuuming is required, the user can simply hold the handle to perform the vacuuming operation.

[0073] 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, 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.

[0074] 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) is provided with a vacuum motor (2) therein; A wind wheel detachably arranged on the vacuum motor (2); A dust collecting chamber (4) is detachably arranged on the main body (1), and an air inlet (5) is provided on the dust collecting chamber (4); A filter motor (6) is arranged in the main body (1), an output shaft is arranged on the filter motor (6), and a filter (7) is arranged on the output shaft; The air inlet portion (5) is arranged on a side wall of the dust collecting chamber (4) on one side of the filter screen (7), and at a portion where the air inlet portion (5) is connected to the dust collecting chamber (4), a tangent line of at least a portion of the air inlet portion (5) coincides with a tangent line of a corresponding portion of the dust collecting chamber (4); The airflow carrying fine dust enters the dust collecting chamber (4) and contacts the rotating filter (7). The filter (7) applies friction to the dust particles in the airflow, so that the dust particles rotate along with the filter (7). The dust particles move toward the edge of the filter (7) under the action of the rotating centrifugal force. The dust particles separated from the filter (7) continue to move under the action of the negative pressure generated by the vacuum motor (2) and eventually fall to the bottom of the dust collecting chamber (4), thereby reducing the probability of the dust particles blocking the filter (7).

2. The dust separation device according to claim 1, characterized in that: The air inlet portion (5) comprises a columnar tube (51) and a protruding portion (52) arranged at one end of the columnar tube (51), and the protruding portion (52) is connected to the dust collecting chamber (4).

3. The dust separation device according to claim 1 or 2, characterized in that: The air inlet (5) is arranged on a side of the dust collecting chamber (4) close to the main body (1).

4. The dust separation device according to claim 1, characterized in that: A bracket (8) is provided inside the main body (1), and the filter motor (6) is provided on the bracket (8).

5. The dust separation device according to claim 4, characterized in that: A connecting column is provided on the bracket (8) at a position corresponding to the filter motor (6), and the filter motor (6) is provided on the connecting column.

6. The dust separation device according to claim 1, characterized in that: The center of the filter (7) is protruding in a direction away from the filter motor (6).

7. The dust separation device according to claim 1 or 6, characterized in that: A connecting sleeve (71) is provided at a portion of the filter screen (7) that is connected to the filter screen motor (6), and an output shaft of the filter screen motor (6) is provided on the connecting sleeve (71).

8. The dust separation device according to claim 7, characterized in that: The filter screen (7) is arranged in a cone shape.

9. The dust separation device according to claim 1 or 6, characterized in that: A groove is provided on the main body (1) at a position corresponding to the vacuum motor (2), and the vacuum motor (2) is suitable for being embedded in the groove.

10. The dust separation device according to claim 1, characterized in that: An exhaust hole (11) is provided on the side wall of the main body (1).

11. The dust separation device according to claim 1, characterized in that: The dust collecting chamber (4) is provided with an opening, and the main body (1) is connected to the dust collecting chamber (4) via the opening.

12. The dust separation device according to claim 11, characterized in that: The main body (1) and the dust collecting chamber (4) are respectively provided with threads at positions corresponding to the main body (1), and a sealing ring is provided on the main body (1) and / or the dust collecting chamber (4) on the side of the threads close to the filter screen (7).

13. A vacuum cleaner, characterized in that: include: The dust separation device according to any one of claims 1 to 12; A dust suction pipe, one end of which is connected to the air inlet (5) of the dust separation device; The vacuum cleaner head is connected to the other end of the vacuum tube.

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