The second air guide body and the applied dust separation device and vacuum cleaner

Abstract

The second air guide body and the air-dust separation device and vacuum cleaner used therein are characterized in that the second air guide body includes a second main body, which is roughly funnel-shaped and includes a second bucket body and a second bucket tail connected to the bottom of the second bucket body. The inner side of the second main body has a central channel, and the lower end of the second bucket tail is closed, but a central air outlet connected to the central channel is provided between the second bucket body and the second bucket tail or on the side wall of the second bucket tail. The beneficial effect of the present invention is that: under the coordinated action of the first air guide body, the second air guide body and the annular filter, the air entering the inner cavity of the barrel is filtered in stages, which effectively reduces the impurity content of the air discharged to the external space through the central channel, and greatly improves the air-dust separation effect.

Description

Technical Field

[0001] The present invention relates to a device for guiding airflow, and in particular to a second air guide body, which can be used in an air-dust separation device to optimize the air-dust separation effect. The present invention also relates to an air-dust separation device and a vacuum cleaner using the second air guide body. Background Art

[0002] As people's requirements for home cleanliness are increasing day by day, vacuum cleaners have gradually become one of the necessary electrical appliances for furniture cleaning. Patent 201510044589.X discloses a two-stage dust and gas separation structure, which includes a hood dust cylinder and a spiral dust and gas separation device. The first-stage separation of dust and gas is achieved through a cyclone hood. The interior of the cyclone hood is provided with a two-stage cyclone cylinder and a spiral dust and gas separation device located at the cylinder mouth. The dust and gas after the first-stage separation are guided by the spiral dust and gas separation device to form an airflow rotating toward the bottom of the cylinder on the inner wall of the secondary cyclone cylinder. The dust in the airflow rotates down to the bottom of the cylinder under the drive of centrifugal force and is collected in the secondary dust collection space. The air in the rotating airflow is extracted by negative pressure to achieve the second-stage dust and gas separation. The number of parts of the two-stage dust and gas separation structure is small, which simplifies the assembly process and facilitates the improvement of the overall performance of the whole machine. At the same time, the structure is small in size, which can effectively reduce the dust cup space occupied by the two-stage separation structure, achieve the maximum dust storage volume, improve the dust collection efficiency, and is suitable for use in vacuum cleaners of various models and sizes.

[0003] Secondly, Patent 201820218242.1 discloses a cyclone cone, cyclone separator and vacuum cleaner for a vacuum cleaner, wherein the cyclone cone comprises: a cyclone shell, the cyclone shell having a bottom wall and a side wall to define a chamber, the bottom wall of the cyclone shell having a mounting hole, the cross-sectional shape of the side wall forming a non-circular shape, wherein the cyclone shell has a guide surface extending upward in a spiral along the central axis of the mounting hole. According to the cyclone cone for a vacuum cleaner of the embodiment of the utility model, by setting the cross-sectional shape of the side wall of the cyclone shell to a non-circular shape, utilizing the characteristics of the non-circular structure having multiple centers and different radii, when the dust-carrying gas rotates along the side wall of the cyclone shell, the maximum centrifugal force is obtained when the side wall is rotated to the minimum radius, thereby accelerating the rotation of garbage and foreign matter and throwing them out at the fastest speed, thereby improving the separation speed and separation efficiency of the cyclone cone, that is, improving the separation performance of the cyclone cone. Summary of the invention

[0004] After many research and experiments, it was found that the dust removal effect of the above patents 201510044589.X and 201820218242.1 is not ideal, and after a short period of use, a large amount of dust particles will accumulate on the last layer of filter cloth assembly, and the filter cloth assembly needs to be replaced frequently. This undoubtedly increases the cost of later use and weakens the use experience. How to optimize the air-dust separation effect is a technical problem that urgently needs to be solved.

[0005] In view of the above technical problems, the present invention proposes a second air guide body, characterized in that the second air guide body includes a second main body, the second main body is roughly funnel-shaped and includes a second bucket body and a second bucket tail connected to the bottom of the second bucket body, the inner side of the second main body has a central channel, the lower end of the second bucket tail is closed, but a central air outlet connected to the central channel is provided between the second bucket body and the second bucket tail or on the side wall of the second bucket tail; a bucket body air guide blade for guiding air is provided on the outer side of the second bucket body, the bucket body air guide blade extends obliquely from top to bottom on the outer side surface of the second bucket body, and the windward surface of the bucket body air guide blade is perpendicular to the outer side surface of the second bucket body; a bucket tail air guide blade for guiding air is provided on the outer side of the second bucket tail, the bucket tail air guide blade extends obliquely from top to bottom on the outer side surface of the second bucket tail, and the windward surface of the bucket tail air guide blade is perpendicular to the outer side surface of the second bucket tail; the bucket body air guide blade and the bucket tail air guide blade are respectively used to form a whirlwind, and the air guiding directions of the bucket body air guide blade and the bucket tail air guide blade are arranged in opposite directions.

[0006] The second body is roughly funnel-shaped, and the above characteristics define that the second body has a structure in which the upper volume is large and the lower volume is small, and the upper and lower cavities are connected and supported.

[0007] The body air guide blades extend obliquely from top to bottom on the outer side of the second body, and the above feature defines that the extension track of the body air guide blades is arranged obliquely. The tail air guide blades extend obliquely from top to bottom on the outer side of the second tail, and the above feature also defines that the extension track of the tail air guide blades is arranged obliquely. In this way, air forms a whirlwind under the drainage effect of the body air guide blades and the tail air guide blades.

[0008] According to the above technical solution, the beneficial technical effects of the present invention are:

[0009] 1. Since the lower end of the second bucket tail is closed, but a central air outlet connected to the central channel is provided between the second bucket body and the second bucket tail or on the side wall of the second bucket tail, the air flowing from top to bottom through the outer side of the second bucket body can enter the central channel through the central air outlet, and will not dive down to the space below the second bucket tail and stir up the dust particles collected in the space below the second bucket tail. Even if a small amount of air dives down to the space below the second bucket tail and raises dust particles, the second bucket tail with a closed lower end can block the raised dust particles and prevent a large amount of dust particles from following the airflow into the central channel and being discharged.

[0010] 2. Since the air guiding blades of the bucket body and the air guiding blades of the bucket tail are arranged in opposite directions, the airflows of different directions in different space segments can achieve a better effect of gas-dust separation. The windward surfaces of the air guiding blades of the bucket tail are arranged in opposite directions, which can well stabilize the swirl guided by the air guiding blades of the bucket body, making the airflow entering the space below the second bucket body relatively stable, which can not only collect fine dust but also greatly reduce the secondary flying of the fine dust that has been collected and follow the airflow into the central channel for discharge. The second air guiding body is conducive to optimizing the gas-dust separation effect.

[0011] A further technical solution may be that the second air guide body further includes a second radial skirt protruding in the radial direction and arranged on the second bucket body, and the bucket body air guide blades are connected to the lower side of the second radial skirt. In this way, the air that collides with the second radial skirt can be forced to flow downward under the guidance of the bucket body air guide blades by means of the second radial skirt.

[0012] A further technical solution may be that an upper ring edge extending upward along the axial direction is also provided on the second radial skirt edge, and the outlet of the central channel is located in the internal area defined by the upper ring edge. In this way, the air discharged from the central channel must enter the area defined by the upper ring edge and flow upward for a distance in the area defined by the upper ring edge. With the above structural features, a filter cloth assembly can be arranged in the internal area defined by the upper ring edge to further filter the air discharged from the central channel.

[0013] A further technical solution may be that the rotation diameter of the farthest outer end of the bucket body air guide blade is greater than the rotation diameter of the farthest outer end of the bucket tail air guide blade. The rotation diameter here is a mathematical concept, which means that assuming rotation does not mean that the second air guide body itself needs to rotate.

[0014] The present invention also proposes an air-dust separation device using the second air guide body, characterized in that it comprises a main shell, a first air guide body, a second air guide body and an annular filter screen, the main shell is in the shape of a barrel with an upper opening, and has a barrel bottom wall body, a barrel side wall body and a barrel inner cavity surrounded by the barrel bottom wall body and the barrel side wall body, the first air guide body, the second air guide body and the annular filter screen are arranged in the barrel inner cavity; the first air guide body comprises a first main body, the inner side of the first main body has an inner cavity; the first air guide body also includes a first radial skirt arranged on the first main body and protruding radially, the first radial skirt is provided with a first air hole, the second radial skirt is arranged above the first radial skirt, the first radial skirt is used to separate the barrel inner cavity in the axial direction, the first air hole is not only used to connect the barrel inner cavity located above and below the first radial skirt respectively, but also used to filter larger debris to achieve air-dust separation, thereby greatly reducing the flow to the path after the first air hole. The amount of large particles of debris, the annular filter is arranged between the first radial skirt and the second radial skirt, and there is an intermediate receiving chamber between the annular filter and the barrel side wall, the first air hole is connected to the intermediate receiving chamber, part of the second main body is inserted into the inner cavity of the first main body and there is an air guide gap between the second air guide body and the annular filter and the first air guide body, the central channel is connected to the air guide gap through the central air port, and the central channel forms the main air outlet channel of the gas-dust separation device, the second radial skirt is used to separate the barrel inner cavity in the axial direction and force the air in the intermediate receiving chamber above the first radial skirt to pass through the annular filter and enter the air guide gap; the air hole area of ​​the annular filter is smaller than the air hole area of ​​the first air hole, and an air inlet is also provided on the main shell, and the air inlet is connected to the barrel inner cavity located below the first radial skirt and outside the first main body.

[0015] According to the above technical scheme, the beneficial technical effects of the present invention are: 1. Since the air inlet is connected to the barrel inner cavity located below the first radial skirt and outside the first bucket body and the first bucket tail. In this way, when the debris entrained in the air enters the bottom of the first radial skirt along with the air through the air inlet, the heavier or larger debris sinks under the action of its own weight and is difficult to enter the intermediate receiving chamber through the first air hole, thereby realizing the first-level gas-dust separation. 2. Since the first air hole can filter larger debris to realize the second-level gas-dust separation, the amount of large particles of debris flowing to the intermediate receiving chamber is greatly reduced, thereby reducing the dirt and dust sticking to the annular filter screen and reducing the resistance in the air flow. 3. Since the air hole area of ​​the annular filter screen is smaller than the air hole area of ​​the first air hole. In this way, the annular filter screen is used to filter smaller particles of debris to realize the third-level gas-dust separation. In summary, with the cooperation of the first air guide body, the second air guide body and the annular filter, the air entering the inner cavity of the barrel is filtered in a graded manner, which effectively reduces the impurity content of the air discharged to the external space through the central channel, and greatly improves the air-dust separation effect.

[0016] A further technical solution may be that the first radial skirt is provided with inclined skirt air guide blades, and there is a wind gap between the front and rear adjacent skirt air guide blades, and the wind gap forms a first air hole, and the skirt air guide blades are used to form a cyclone through the air passing through the first air hole, thereby strengthening the air-dust separation and filtering part of the dirt. In this way, under the action of the cyclone, the dirt and dust adhering to the annular filter can be further reduced, and the filtering effect of the first-stage air-dust separation can be improved.

[0017] A further technical solution may be that the axial projections of the front and rear adjacent skirt air guide blades at least partially overlap, which greatly improves the kinetic energy and efficiency of the cyclone and further enhances the gas-dust separation effect.

[0018] A further technical solution may be that the skirt air guide blades and the bucket body air guide blades are arranged in opposite directions to further enhance the gas-dust separation effect.

[0019] A further technical solution may also be that the first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body, the inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected, the first radial skirt is arranged on the first bucket body, the first radial skirt is configured as a wind passing area with a first wind hole and a closed area without the first wind hole, a windward channel is arranged below the closed area of ​​the first radial skirt, and a first protruding winglet and a second protruding winglet protruding radially are arranged on the outer surface of the first bucket body, the first protruding winglet and the second protruding winglet are arranged in an L shape, and the first protruding winglet and the first radial skirt are roughly connected to each other. The two buckets are arranged in parallel, the second protruding wing and the first radial skirt are arranged approximately perpendicular to each other and one end of the second protruding wing is connected to the first radial skirt and the other end is connected to the first protruding wing; the first protruding wing, the second protruding wing, the closed area of ​​the first radial skirt, the outer wall of the first bucket body, and the barrel side wall are combined to form the windward channel; the air inlet is arranged on the barrel side wall to form a barrel side wall inlet, and the barrel side wall inlet is connected to the windward channel, and the windward channel is used to form a cyclone in one direction on the outer side surface of the first bucket body to allow heavier or larger debris to be directly separated and sunk into the barrel inner cavity below the windward channel before entering the first air hole. According to the above technical solution, since the windward channel is arranged below the closed area of ​​the first radial skirt, it can be prevented that the air enters the barrel space above the first radial skirt directly after entering the barrel space below the first radial skirt. Instead, the air first forms a rotating flow in the barrel space below the first radial skirt before passing through the first air hole and entering the barrel space above the first radial skirt. This is conducive to ensuring that the air can flow along the outer side surface of the first bucket body for a distance to form a cyclone and then enter the barrel space above the first radial skirt through the first air hole.

[0020] A further technical solution may be that the first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body, the inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected, the first bucket body of the first air-guiding body includes a first cylindrical barrel-shaped bucket body and a first bundle-shaped bucket body with a closed end connected to the bottom of the first barrel-shaped bucket body, the first bucket tail is connected to the bottom of the first bundle-shaped bucket body, and the first radial skirt is arranged on the first barrel-shaped bucket body.

[0021] A further technical solution may be that the first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body, the inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected, and the first bucket tail extends downward and abuts against the bottom wall of the barrel, thereby forming a fine dust collection chamber and a primary dust collection chamber that can accommodate garbage in the inner and outer spaces of the first bucket tail, respectively.

[0022] Finally, the present invention also proposes a vacuum cleaner using the gas-dust separation device, characterized in that it includes a main unit, a connecting pipe and a dust picking unit, wherein the main unit includes a power device and the gas-dust separation device, the power device is used to generate suction power, the gas-dust separation device is connected to the power device to separate dust in the air, one end of the pipe cavity in the connecting pipe is connected to the air inlet of the gas-dust separation device, and the other end is connected to the dust picking unit, the dust picking unit is used to pick up dust on the surface of the deposited object by using suction power and can provide the picked up dust to the gas-dust separation device through the pipe cavity in the connecting pipe.

[0023] A further technical solution may be that the main unit also includes a hand-held device, which is used for a user to hold and operate, and the hand-held device is arranged on the side of the gas-dust separation device, and the power device, the gas-dust separation device and the hand-held device are interconnected to form an integrated device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of a vacuum cleaner using the technical solution of the present invention;

[0025] Figure 2 It is a front planar structural schematic diagram of a main unit 100 to which the technical solution of the present invention is applied;

[0026] Figure 3 is a schematic cross-sectional structural diagram of the main unit 100;

[0027] Figure 4 is a schematic diagram of the three-dimensional structure of the gas-dust separation device 400;

[0028] Figure 5 is a schematic diagram of the exploded structure of the gas-dust separation device 400;

[0029] Figure 6 is a schematic structural diagram of the gas-dust separation device 400 in the main viewing direction;

[0030] Figure 7 is a schematic cross-sectional structural diagram of the gas-dust separation device 400;

[0031] Figure 8is a schematic diagram of the three-dimensional structure of the first air guide body 1;

[0032] Fig. 9 is a schematic structural diagram of the second air guide body 2 in the main viewing direction;

[0033] Fig.10 is a schematic diagram of a three-dimensional structure after the first air guide body 1 and the second air guide body 2 are assembled;

[0034] Fig.11 is a schematic diagram of the exploded structure of the main unit 100;

[0035] Fig.12 is a schematic diagram of the three-dimensional structure of the first fusion body;

[0036] Fig.13 is a schematic diagram of the three-dimensional structure of the embedded air guide box 83;

[0037] Fig.14 is a schematic diagram of the three-dimensional structure of the power supply assembly 871;

[0038] Fig.15 yes Figure 3 Schematic diagram of the enlarged structure of part A in the middle. DETAILED DESCRIPTION

[0039] The structure of the vacuum cleaner and the dust collection method using the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] like Figures 1 to 15 As shown, a vacuum cleaner comprises a main unit 100, a connecting pipe 200 and a dust collection unit 300, wherein the main unit 100 comprises a power device 700, an air-dust separation device 400 and a hand-held device 800, and the power device 700, the air-dust separation device 400 and the hand-held device 800 are connected to each other as an integral device. The air inlet 43 of the air-dust separation device 400 is connected to the dust collection unit 300, and the main air outlet channel is connected to the power device 700.

[0041] The power device 700 is used to generate suction power, i.e., vacuum negative pressure, through a rotating motor and the fan blades it drags. The air-dust separation device 400 is detachably connected to the power device 700 and is used to separate dust in the air by means of the suction power using the principles of filtration and centrifugal separation. The hand-held device 800 is arranged on the sides of the air-dust separation device 400 and the power device 700 for users to hold, operate, and support the connection between the power device 700 and the air-dust separation device 400. The hand-held device 800 is provided with a transition channel 81 connected to the air-dust separation device 400, the pipe cavity in the connecting pipe 200 is located upstream of the transition channel 81 and the tail end of the connecting pipe 200 is connected to the hand-held device 800, and the front end of the connecting pipe 200 is connected to the dust picking unit 300, and the dust picking unit 300 is used to pick up dust on the surface of the deposited object by suction power and can provide the picked up dust to the air-dust separation device 400 through the pipe cavity in the connecting pipe 200 and the transition channel 81. The dust picking unit 300 can be a mechanism including a roller brush, such as the mop used in this embodiment, or it can be directly a suction pipe nozzle for contacting the surface of the deposited object.

[0042] As another embodiment, the transition channel 81 may not be set on the hand-held device 800 but may be directly set on other components connected to the gas-dust separation device 400. The transition channel 81 may also be omitted and the connecting pipe 200 may be directly connected to the air inlet of the gas-dust separation device 400.

[0043] Although the principle of air-dust separation is well known, the specific separation structures lead to significant differences in dust removal effect, use cost and life of the vacuum cleaners produced. The specific solutions adopted in the embodiments of the present invention include:

[0044] like Figures 4 to 10 As shown, the gas-dust separation device 400 includes a first air guide 1, a second air guide 2, an annular filter 3 and a main shell 4. The main shell 4 is in the shape of a barrel with an upper opening and has a barrel bottom wall 41, a barrel side wall 42 and a barrel inner cavity 40 surrounded by the barrel bottom wall 41 and the barrel side wall 42. The barrel bottom wall 41 or the barrel side wall 42 of the main shell 4 defines the central axis, but it does not mean that the main shell 4 must be in a standard cylindrical structure, and can also be an elliptical structure. Secondly, the barrel bottom wall 41 can be movably connected to the barrel side wall 42 in a conversion mode of an open state or a closed state.

[0045] The barrel side wall 42 of the main shell 4 is provided with an air inlet 43, which is also referred to as the barrel side wall inlet 43 because it is located on the barrel side wall 42. The barrel side wall inlet 43 is used to allow the air (gas dust) in the transition channel 81 to pass through the barrel side wall 42 and enter the primary dust collection chamber 52 in the barrel inner chamber 40. In other embodiments, the air inlet 43 may also be provided on the barrel bottom wall 41 of the main shell 4 or other appropriate positions.

[0046] The first air guide body 1 can be detachably placed in the barrel inner cavity 40. The axis of the first air guide body 1 is roughly overlapped or parallel to the axis of the barrel inner cavity 40. The first air guide body 1 includes a first main body 10, which is roughly funnel-shaped, that is, the upper volume is large and the lower volume is small, and the upper and lower cavities are connected and supported. The first main body 10 includes a first bucket body 11 and a first bucket tail 12 connected to the bottom of the first bucket body 11. The first bucket body 11 and the first bucket tail 12 are arranged in the barrel inner cavity 40 along the axial direction of the barrel inner cavity 40. The first bucket body 11 and the first bucket tail 12 of the first main body 10 respectively have inner cavities 16 that can be connected to each other. The first bucket tail 12 extends downward and abuts against the barrel bottom wall 41, so that a fine dust collection chamber 51 and a primary dust collection chamber 52 capable of accommodating garbage are formed in the inner and outer spaces of the first bucket tail 12, or the first bucket tail 12 extends downward in the primary dust collection chamber 52 and abuts against the barrel bottom wall 41, and the fine dust collection chamber 51 is located at the lower part of the inner chamber 16, that is, located at the inner section of the first bucket tail 12. The barrel bottom wall 41 can be movably connected to the barrel side wall 42 in a conversion mode of an open state or a closed state, so that when the barrel bottom wall 41 is opened, the garbage accumulated in the fine dust collection chamber 51 and the primary dust collection chamber 52 can be poured out. Further, a central garbage outlet 410 is provided on the barrel bottom wall 41, and the first bucket tail 12 extends downward and abuts against the central garbage outlet 410, and a hole plug 411 is provided on the central garbage outlet 410. The central garbage outlet 410 is used to discharge the fine garbage in the fine dust collecting chamber 51 located in the first bucket tail 12 .

[0047] The first bucket body 11 includes a first barrel-shaped bucket body 111 in a columnar shape, a first beam-shaped bucket body 112 in a closed shape connected to the bottom of the first barrel-shaped bucket body 111, and the first bucket tail 12 is connected to the bottom of the first beam-shaped bucket body 112. The first air guide body 1 also includes a first radial skirt 13 protruding in the radial direction and arranged on the first barrel-shaped bucket body 111. The first radial skirt 13 is provided with a first air hole 130, so that the first radial skirt 13 becomes the bottom wall of the intermediate receiving cavity 5 to be discussed below. When the first air guide body 1 is placed in the barrel inner cavity 40, the first radial skirt 13 is located above the barrel side wall inlet 43.

[0048] The first radial skirt 13 is used to separate the barrel inner chamber 40 in the axial direction, so that the air below the first radial skirt 13 cannot (or can only be a very small amount of leaked air) flow upward from the periphery of the first radial skirt 13 to the top of the first radial skirt 13, but must flow into the top of the first radial skirt 13 through the first air hole 130; secondly, the first radial skirt 13 also defines the upper boundary of the primary dust collection chamber 52, that is, the primary dust collection chamber 52 is located below the first radial skirt 13. The first air hole 130 is not only used to connect the barrel inner chamber 40 located above the first radial skirt 13 and the barrel inner chamber 40 (that is, the primary dust collection chamber 52) located below the first radial skirt 13, but also used to filter larger debris to achieve the second-level gas-dust separation, thereby greatly reducing the amount of large particles flowing to the downstream path after the first air hole 130. Further, the first radial skirt 13 is provided with an inclined skirt air guide blade 131, and there is a wind gap between the front and rear adjacent skirt air guide blades 131, and the wind gap forms the first wind hole 130. The axial projections of the front and rear adjacent skirt air guide blades 131 at least partially overlap, thereby greatly improving the kinetic energy and efficiency of the cyclone. The skirt air guide blade 131 is used to allow the air passing through the first wind hole 130 to form a cyclone in the intermediate receiving chamber 5 outside the annular filter 3 to be discussed below. The cyclone formed in the intermediate receiving chamber 5 can not only enhance the third-stage air-dust separation effect to be discussed below, but also reduce the dirt and dust sticking to the annular filter 3, thereby reducing the resistance in the air flow. The first radial skirt 13 is configured as a wind zone 132 provided with the first wind hole 130 and a closed zone 133 not provided with the first wind hole, and the barrel side wall inlet 43 is located directly below the closed zone 133 of the first radial skirt 13. This can prevent the air from directly entering the space above the first radial skirt 13 after coming out of the barrel side wall inlet 43. Instead, the air forms a rotating flow in the lower space and then passes through the first air hole 130 to enter the space above the first radial skirt 13. This is beneficial to ensure that the air can flow along the outer side of the first bucket body 11 for a distance to form a cyclone and then enter the intermediate receiving chamber 5 through the first air hole 130.

[0049] A windward passage 54 is provided below the closed area 133 of the first radial skirt 13 , and the windward passage 54 is located in the upper space of the primary dust collecting chamber 52 . Among them, a first protruding wing 14 and a second protruding wing 15 protruding radially are also provided on the outer surface of the first barrel-shaped bucket body 111, and the first protruding wing 14 and the second protruding wing 15 are correspondingly located below the closed area 133 and are arranged in an L shape; the first protruding wing 14 and the first radial skirt 13 are arranged roughly parallel to each other and do not need to extend too long as long as a cyclone guide is formed, for this reason, the circumferential extension length of the first protruding wing 14 is substantially equivalent to the circumferential extension length of the closed area 133; the second protruding wing 15 and the first radial skirt 13 are arranged roughly perpendicular to each other and one end of the second protruding wing 15 is connected to the first radial skirt 13 and the other end is connected to the first protruding wing 14, thereby closing a port of the windward channel 54, and the second protruding wing 15 is used to force the air entering the windward channel 54 to rotate in the same direction. The five walls, namely, the first protruding wing 14, the second protruding wing 15, the closed area 133 of the first radial skirt 13, the outer wall of the first bucket body 11, and the barrel side wall 42, are combined to form the windward channel 54, the outlet of the windward channel 54 leads to the primary dust collecting chamber 52; the windward channel 54 is connected to the barrel side wall inlet 43, and the windward channel 54 is used to form a cyclone between the arc-shaped outer surfaces of the first bucket body 11 and the barrel side wall 42 to achieve the first-level gas-dust separation, so that heavier or larger debris can be directly separated and sunk into the space outside the first bucket tail 12 and below the first radial skirt 13 and the windward channel 54 before entering the first air hole 130, that is, the lower space of the primary dust collecting chamber 52. Secondly, the direction of the cyclone formed by forcing the air in the windward channel 54 by the second protruding wing 15 is opposite to the direction of the cyclone formed in the middle receiving chamber 5 by guiding the air by the skirt air guide blades 131. The airflows in different directions can enhance the effect of gas-dust separation.

[0050] The second air guide body 2 can be detachably placed in the barrel inner cavity 40, and the axis of the second air guide body 2 is roughly overlapped or parallel to the axis of the first air guide body 1. The second air guide body 2 includes a second main body 20, which is also roughly funnel-shaped and includes a second bucket body 21 and a second bucket tail 22 connected to the bottom of the second bucket body 21. Part of the second main body 20 is inserted into the first bucket body 11 and even extends a small amount into the first bucket tail 12. A first air guide gap is formed between the second main body 20 and the first bucket body 11. The lower end of the second bucket tail 22 is closed, but a central air outlet 23 connecting to the central channel 210 of the second bucket body 21 is provided between the second bucket body 21 and the second bucket tail 22 or on the side wall of the second bucket tail 22. The central channel 210 forms the main air outlet channel of the gas-dust separation device 400. The fine dust collection chamber 51 is not only located at the lower part of the inner cavity 16, that is, at the inner section of the first bucket tail 12, but also located in the space below the second bucket tail 22. In this way, the air flowing from top to bottom through the outer side of the second bucket body 21 can enter the central channel 210 through the central air outlet 23, and will not dive down into the fine dust collection chamber 51 to stir and lift up the dust particles collected in the fine dust collection chamber 51. Even if a small amount of air dives into the fine dust collection chamber 51 and lifts up dust particles, the second bucket tail 22 with a closed lower end can block the lifted dust particles, preventing a large amount of dust particles from following the air into the central channel 210 and being discharged.

[0051] The second air guide body 2 also includes a second radial skirt 24 protruding radially on the second bucket body 21. The second air guide body 2 is inserted into the first air guide body 1 so that the second radial skirt 24 is arranged above the first radial skirt 13. The annular filter 3 is arranged between the first radial skirt 13 and the second radial skirt 24 and is tightened by screws and studs 17. The studs 17 are arranged on the first radial skirt 13. The combination of the annular filter 3 and the studs 17 in turn positions the first air guide body 1 and the second air guide body 2. The annular filter 3, the first radial skirt 13, the second radial skirt 24 and the barrel side wall 42 together form the intermediate receiving chamber 5, that is, the intermediate receiving chamber 5 is provided between the annular filter 3 and the barrel side wall 42. The first air hole 130 is connected to the intermediate receiving chamber 5, and the air hole area of ​​the annular filter 3 is smaller than the air hole area of ​​the first air hole 130; secondly, the annular filter 3 and the second bucket body 21 have a second air guide gap, and the second radial skirt 24 is also used to separate the barrel inner chamber 40 in the axial direction and force the air in the intermediate receiving chamber 5 above the first radial skirt 13 to enter the second air guide gap and the first air guide gap, and finally let the air be discharged upward from the central channel 210 of the second bucket body 21, that is, the main air outlet channel of the gas-dust separation device 400, for which no air hole is provided on the second radial skirt 24. At this time, the annular filter 3 is used to filter smaller particles to achieve the third-level gas-dust separation. Furthermore, a first mounting groove opening toward the second radial skirt 24 is provided on the first radial skirt 13, and a second mounting groove opening toward the first radial skirt is provided on the second radial skirt 24. The upper and lower mesh edges of the annular filter 3 are respectively arranged in the first mounting groove and the second mounting groove so as to stably install the annular filter 3.

[0052] Further, a body air guide blade 211 for guiding wind is arranged on the outside of the second body 21, and a tail air guide blade 221 for guiding wind is arranged on the outside of the second tail 22, and the rotation diameter of the farthest outer end point of the body air guide blade 211 located on the upper side is greater than the rotation diameter of the farthest outer end point of the tail air guide blade 221 located on the lower side (the rotation diameter here is a mathematical concept, which means that the second air guide body 2 itself needs to rotate, assuming rotation). The body air guide blade 211 extends obliquely from top to bottom on the outer side surface of the second body 21, and the windward surface of the body air guide blade 211 is perpendicular to the outer side surface of the second body 21. The tail air guide blade 221 arranged on the outer side of the second tail 22 extends obliquely from top to bottom on the outer side surface of the second tail 22, and the windward surface of the tail air guide blade 221 is perpendicular to the outer side surface of the second tail 22. The first air guide gap and the second air guide gap together constitute the secondary separation chamber 53, and the bucket body air guide blade 211 is not only arranged in the first air guide gap but also can be extended and arranged in the second air guide gap. In this way, the second bucket body 21 and the second bucket tail 22 become a two-stage cyclone mechanism arranged in the upper and lower parts of the secondary separation chamber 53, and a rotating airflow is formed under the guidance of the cyclone mechanism. The upper cyclone mechanism makes the air rotate in the opposite direction to the lower cyclone mechanism. The bucket body air guide blade 211, i.e., the upper cyclone mechanism, is used to form a cyclone to achieve the fourth-level gas-dust separation, and the bucket tail air guide blade 221, i.e., the lower cyclone mechanism, is used to form a cyclone to achieve the fifth-level gas-dust separation. The windward surface of the bucket body air guide blade 211 arranged on the outer side of the second bucket body 21 is perpendicular to the outer side surface of the second bucket body 21 and is also perpendicular to the axis. The windward surface of the bucket tail air guide blade 221 arranged on the outer side of the second bucket tail 22 is perpendicular to the outer side surface of the second bucket tail 221 and is also perpendicular to the axis. The inclination angle of the bucket body air guide blade 211 and the bucket tail air guide blade 221 is the same, but the air guiding direction (i.e., the windward side direction) of the bucket body air guide blade 211 is opposite to the air guiding direction of the bucket tail air guide blade 221, so that the rotation direction of the air made by the bucket body air guide blade 211 is opposite to the cyclone direction of the air made by the bucket tail air guide blade 221; in another implementation case in which the air guiding directions are set to be the same, the effect of gas-dust separation will be reduced.In the embodiment with opposite wind guiding directions, the bucket body wind guiding blades 211 make the rotation direction of the airflow flowing through and the bucket tail wind guiding blades 221 make the airflow flowing through form a cyclone with opposite flow, so that the airflows with different directions in different space segments can achieve a better effect of gas-dust separation, wherein the windward surface of the bucket tail wind guiding blades 221 is arranged in the opposite direction, which can well stabilize the swirl guided by the bucket body wind guiding blades 211, so that the airflow entering the lower space of the first bucket body 11 and the fine dust collecting chamber 51 is relatively stable, which can not only collect fine dust but also greatly reduce the secondary flying of the fine dust that has been collected and follow the airflow into the central channel 210 for discharge. Further, the second bucket tail 22 and the bucket tail wind guiding blades 221 extend downward in the first bucket body 11 to the junction between the first barrel-shaped bucket body 111 and the first bundle-shaped bucket body 112. In this way, the bundle position can be used to further reduce the air from diving down into the lower space of the fine dust collecting chamber 51 to stir up the fine dust that has been collected.

[0053] In addition, the air guiding direction of the bucket body air guiding blades 211 is opposite to that of the skirt air guiding blades 131, so that the rotation direction of the airflow passing through the bucket body air guiding blades 211 is also opposite to the direction of the cyclone formed by the air in the middle receiving chamber 5 by the skirt air guiding blades 131.

[0054] A filter cloth assembly 6 is also arranged above the outlet of the central channel 210. The filter cloth assembly 6 includes a pleated filter cloth and a frame for fixing the filter cloth. The filter cloth is used to filter fine particles in the air. The filter cloth assembly 6 is used to filter fine particles in the air to achieve the sixth level of gas-dust separation. Further, an upper ring edge 241 extending upward along the axial direction is also arranged on the second radial skirt 24. The filter cloth assembly 6 is arranged in the space defined by the upper ring edge 241, and the outlet of the central channel 210 is located in the internal area defined by the upper ring edge 241. A positioning stop 242 is also arranged on the upper ring edge 241. The positioning stop 242 becomes a supporting device for supporting the filter cloth assembly 6. The filter cloth assembly 6 is arranged in the space defined by the upper ring edge 241 and placed on the positioning stop 242. The positioning stop 242 is used to form the diffusion gap H. The diffusion gap H is located between the lower surface of the filter cloth assembly 6 and the outlet of the central channel 210. The diffusion gap H is used to allow the air from the outlet of the central channel 210 to be evenly diffused to the entire lower surface of the filter cloth assembly 6, thereby not only improving the filtering efficiency but also reducing the wind resistance. Of course, in other embodiments, the supporting device 242 can also be a supporting column or a supporting frame that is arranged on the second radial skirt 24 and extends in the axial direction.

[0055] like Figure 11 to Figure 13 As shown, the power device 700 includes a power unit outer shell 7, a driving motor, a fan blade and a power unit air duct 71 housed in the power unit outer shell 7, the fan blade is used to provide outflow power for the air in the power unit air duct 71, the outlet of the central channel 210 is connected to the power unit air duct 71, and the air sucked out from the central channel 210 enters the power unit air duct 71 after passing through the filter cloth assembly 6. The axis of the power unit air duct 71 is roughly parallel to the axis of the central channel 210, but the air outlet direction of the power unit air duct 71 is arranged along a radial direction roughly perpendicular to the axis of the power unit air duct 71 or the axis of the central channel 210, that is, the air outlet direction of the power unit air duct 71 is roughly perpendicular to the axis of the power unit air duct 71, so that the air sucked out from the power unit air duct 71 does not need to be directly facing the user, avoiding the user from catching a cold or dust.

[0056] The hand-held device 800 includes an air transition connection part 82, the transition channel 81 is arranged in the air transition connection part 82 and the front end of the connecting pipe 200 is connected to the air transition connection part 82, and the air transition connection part 82 is located on the side of the air-dust separation device 400. The air transition connection part 82 has a U-shaped cavity 820 with a U-shaped cross section, and the U-shaped cavity 820 has an open portion 821 facing the gas-dust separation device 400. An embedded air guide box 83 is arranged in the U-shaped cavity 820, and the inner cavity 830 of the embedded air guide box 83 forms part of the transition channel 81. The embedded air guide box 83 has an air guide inlet 833 and an air guide outlet 832, and the air guide inlet 833 is connected to the connecting pipe 200. The air guide outlet 832 is arranged on the box top wall 831 of the embedded air guide box 83, and the box top wall 831 is covered on the open portion 821 so that the air guide outlet 832 is connected to the barrel side wall inlet 43. A sealing silica gel 85 is arranged between the barrel side wall inlet 43 and the air guide outlet 832 to prevent air leakage and facilitate the installation of the main shell 4. A valve plate 84 is also provided in the embedded air guide box 83, and the valve plate 84 is used to prevent dust in the air-dust separation device from flowing back into the connecting pipe. When the driving motor is working, the valve plate 84 can be opened when air enters the inner cavity 830 of the embedded air guide box 83 from the connecting pipe 200, and when the driving motor stops working, the valve plate 84 is in a closed state.

[0057] The hand-held device 800 also includes a hand-held portion 86 , which is used for manual operation. A button 861 for controlling the drive motor is detachably mounted on the hand-held portion 86 , and a control wire connected to the button 861 is accommodated in a cavity 860 of the hand-held portion 86 .

[0058] The hand-held device 800 also includes a power receiving portion 87 arranged in front and behind the hand-held portion 86, the power receiving portion 87 connects the hand-held portion 86 and the air transition connection portion 82, and is provided with a pair of electrodes, i.e., a pair of positive and negative electrodes, and a power component 871 is detachably connected to the pair of electrodes of the power receiving portion 87. The power receiving portion 87 is in the shape of an open barrel cavity (i.e., a magazine shape) and protrudes outward from the air transition connection portion 82, and the power component 871 is inserted into the power receiving portion 87 in the shape of a clip and locked. Specifically, as Fig.14 and Fig.15 As shown, the power supply assembly 871 includes a battery storage cavity 8711 with an opening and a battery cavity cover 8712 sealed on the opening, a positioning box 8715 is installed on the inner wall of the battery cavity cover 8712, a movable locking member 8713 movable left and right and a return spring 8714 pressed between the movable locking member 8713 and the positioning box 8715 are installed in the positioning box 8715, and a positioning block 87111 is provided on the power receiving part 87; the movable locking member 8713 can pass through the cavity side wall of the battery storage cavity 8711 and be stuck on the positioning block 87111, thereby locking the power supply assembly 871 in the power receiving part 87. A control window 87120 is provided on the battery cavity cover 8712, and a control handle 87131 is provided on the movable locking member 8713. The control handle 87131 is exposed in the control window 87120, and the control handle 87131 is used to control the movement of the movable locking member 8713. According to the above technical solution, the movable locking member 8713 can be driven by the control handle 87131 to move away from the positioning block 87111, and then the power supply assembly 871 is detached from the power supply receiving part 87. This is not only convenient for installing the power supply assembly 871 and safe, but also allows the power supply receiving part 87 itself to be used as one of the hand-held handles. The battery storage cavity 8711 can be configured with a dry cell or a battery pack consisting of several dry cells. Secondly, a charging circuit (not shown in the figure) is also stored in the power supply receiving part 87, and the pair of electrodes is electrically connected to the output port of the charging circuit.

[0059] The front end of the main housing 4 of the gas-dust separation device 400 is clamped on the air transition connection portion 82, and the rear end is clamped on the power unit outer housing 7. Of course, in other embodiments, the main housing 4 of the gas-dust separation device 400 can also be screwed or clamped on the power unit outer housing of the power device.

[0060] The power receiving part 87 and the air transition connection part 82 are integrated into a first fusion body, and the hand grip part 86 and the power part outer shell 7 are integrated into a second fusion body. The first fusion body and the second fusion body are separated and detachably connected. That is, the two are separate independent component structures but can be connected together by means of snap-on or the like to form a whole hand grip device 800. A lighting lamp (not shown in the figure) is also provided on the hand grip device 800. The lighting lamp is a spotlight, and its light outlet faces the direction where the dust pickup unit 300 is located. The lighting lamp can be rotated on the hand grip device 800 so that the direction of the lighting lamp can be flexibly adjusted when using the vacuum cleaner, helping the user to predict the cleaning focus of the lower part. Secondly, the lighting lamp can be set to a plug-in type, and the light color of the lighting lamp can be set to a replaceable type, so that different users can flexibly replace lighting lamps with different light colors for the convenience of color blindness and color weakness.

[0061] The multi-stage air-dust separation method is as follows: the first step is to set a windward channel 54 in the upper space of the primary dust collecting chamber 52, so that the air first enters the windward channel 54 from the air inlet 43 and then enters the primary dust collecting chamber 52, and the windward channel 54 is used to guide the air to form a rotating wind in one direction and enter the upper space in the primary dust collecting chamber 52, so that the air first throws off heavier or larger debris when rotating and moving in the primary dust collecting chamber 52 and accumulates in the lower space of the primary dust collecting chamber to realize the first-stage air-dust separation; the second step is to allow the air to pass through the first air hole 130 and then continue to move into the intermediate receiving chamber 5, and use the opportunity of passing through the first air hole 130 to further filter out heavier or larger debris and accumulate them in the lower space of the primary dust collecting chamber 52 to realize the second-stage air-dust separation; the third step is to allow the air to pass through the air filter arranged in the intermediate receiving chamber 5 After the annular filter screen 3 between the chamber 5 and the secondary separation chamber 53, the air continues to move into the secondary separation chamber 53 and further filters out smaller debris by passing through the annular filter screen 3 and accumulates it at the bottom of the intermediate receiving chamber 5 to realize the third-level air-dust separation, and the intermediate receiving chamber 5 is used to store the filtered smaller debris; secondly, when the air intake is stopped, the main housing 4 can also be shaken to allow at least part of the smaller debris accumulated at the bottom of the intermediate receiving chamber 5 to pass through the first air hole 130 and then fall into the primary dust collection chamber 52; fourthly, the air entering the secondary separation chamber 53 continues to move forward in a rotating manner, and the air is further thrown off fine dust during the rotating movement and accumulates it at the bottom of the secondary separation chamber 53, that is, the fine dust collection chamber 51 to realize air-dust separation; fifthly, the air in the secondary separation chamber 53 is discharged from the central channel 210. In this way, dust can be effectively separated from the air, dust accumulated on the filter cloth assembly 6 can be reduced, and the service life of the filter cloth assembly 6 can be effectively extended. Furthermore, the central channel 210 extends into the secondary separation chamber 53 , and air enters into the central channel 210 from the middle or lower portion of the secondary separation chamber 53 .

Claims

1. The second air guide body is characterized in that: The second air guide body comprises a second main body, which is roughly funnel-shaped and comprises a second bucket body and a second bucket tail connected to the second bucket body. The inner side of the second main body has a central channel, and the lower end of the second bucket tail is closed, but a central air outlet communicating with the central channel is provided between the second bucket body and the second bucket tail or on the side wall of the second bucket tail; a bucket body air guide blade for guiding air is provided on the outer side of the second bucket body, the bucket body air guide blade extends obliquely from top to bottom on the outer side surface of the second bucket body, and the windward surface of the bucket body air guide blade is perpendicular to the outer side surface of the second bucket body; a bucket tail air guide blade for guiding air is provided on the outer side of the second bucket tail, the bucket tail air guide blade extends obliquely from top to bottom on the outer side surface of the second bucket tail, and the windward surface of the bucket tail air guide blade is perpendicular to the outer side surface of the second bucket tail; The bucket body air guide blades and the bucket tail air guide blades are respectively used to form cyclones, and the air guide directions of the bucket body air guide blades and the bucket tail air guide blades are arranged in opposite directions.

2. The second air guide according to claim 1, characterized in that: The second air guide body also includes a second radial skirt which is arranged on the second bucket body and protrudes in the radial direction, and the bucket body air guide blades are connected to the lower side of the second radial skirt.

3. The second air guide according to claim 2, characterized in that: An upper ring edge extending upward along the axial direction is also provided on the second radial skirt, and the outlet of the central channel is located in the inner area defined by the upper ring edge.

4. The second air guide according to claim 1, characterized in that: The rotation diameter of the farthest outer end point of the bucket body air guide blade is greater than the rotation diameter of the farthest outer end point of the bucket tail air guide blade.

5. The gas-dust separation device using the second air guide body according to any one of claims 1 to 4, characterized in that: The invention comprises a main shell, a first air guide body, a second air guide body and an annular filter screen, wherein the main shell is in the shape of a barrel with an upper opening, and comprises a barrel bottom wall body, a barrel side wall body and a barrel inner cavity surrounded by the barrel bottom wall body and the barrel side wall body, and the first air guide body, the second air guide body and the annular filter screen are arranged in the barrel inner cavity; the first air guide body comprises a first main body, and the inner side of the first main body has an inner cavity; the first air guide body also comprises a first radial skirt which is arranged on the first main body and protrudes radially, and a first air hole is arranged on the first radial skirt; the second air guide body also comprises a second radial skirt which protrudes radially and is arranged on the second bucket body, and the second radial skirt is arranged above the first radial skirt, and the first radial skirt is used to separate the barrel inner cavity in the axial direction, and the first air hole is not only used to connect the barrel inner cavity respectively located above and below the first radial skirt, but also used to filter larger debris to achieve gas-dust separation, thereby greatly reducing the flow of dust to the first air hole. The annular filter is arranged between the first radial skirt and the second radial skirt, and there is an intermediate receiving chamber between the annular filter and the barrel side wall, the first air hole is connected to the intermediate receiving chamber, part of the second main body is inserted into the inner cavity of the first main body and there is an air guide gap between the second air guide body and the annular filter and the first air guide body, the central channel is connected to the air guide gap through the central air port, and the central channel forms the main air outlet channel of the gas-dust separation device, the second radial skirt is used to separate the barrel inner cavity in the axial direction and force the air in the intermediate receiving chamber above the first radial skirt to pass through the annular filter and enter the air guide gap; the air hole area of ​​the annular filter is smaller than the air hole area of ​​the first air hole, and an air inlet is also provided on the main shell, and the air inlet is connected to the barrel inner cavity located below the first radial skirt and outside the first main body.

6. The gas-dust separation device according to claim 5, characterized in that: The first radial skirt is provided with inclined skirt air guide blades, and there is a wind gap between the front and rear adjacent skirt air guide blades, and the wind gap forms a first air hole. The skirt air guide blades are used to allow the air passing through the first air hole to form a cyclone, thereby enhancing air-dust separation and filtering some dirt.

7. The gas-dust separation device according to claim 6, characterized in that: The axial projections of the front and rear adjacent skirt air guide blades at least partially overlap.

8. The gas-dust separation device according to claim 6, characterized in that: The skirt air guide blades and the bucket body air guide blades are arranged in opposite directions.

9. The gas-dust separation device according to claim 6, 7 or 8, characterized in that: The first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body. The inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected. The first radial skirt is arranged on the first bucket body. The first radial skirt is configured as a wind passing area with a first wind hole and a closed area without the first wind hole. A windward channel is arranged below the closed area of ​​the first radial skirt. The outer surface of the first bucket body is provided with a first protruding winglet and a second protruding winglet protruding in the radial direction. The first protruding winglet and the second protruding winglet are arranged in an L shape. The first protruding winglet and the first radial skirt are arranged roughly parallel to each other. The second protruding wing and the first radial skirt are arranged approximately perpendicular to each other and one end of the second protruding wing is connected to the first radial skirt and the other end is connected to the first protruding wing; the first protruding wing, the second protruding wing, the closed area of ​​the first radial skirt, the outer wall of the first bucket body, and the barrel side wall are combined to form the windward channel; the air inlet is arranged on the barrel side wall to form a barrel side wall inlet, and the barrel side wall inlet is connected to the windward channel. The windward channel is used to form a cyclone in one direction on the outer side surface of the first bucket body so that heavier or larger debris can be directly separated and sunk into the barrel inner cavity below the windward channel before entering the first air hole.

10. The gas-dust separation device according to any one of claims 5 to 8, characterized in that: The first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body. The inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected. The first bucket body of the first air guide body includes a first cylindrical barrel-shaped bucket body and a first bundle-shaped bucket body with a closed end connected to the bottom of the first barrel-shaped bucket body. The first bucket tail is connected to the bottom of the first bundle-shaped bucket body, and the first radial skirt is arranged on the first barrel-shaped bucket body.

11. The gas-dust separation device according to any one of claims 5 to 8, characterized in that: The first main body is roughly funnel-shaped and includes a first bucket body and a first bucket tail connected to the bottom of the first bucket body. The inner sides of the first bucket body and the first bucket tail have inner cavities that are interconnected. The first bucket tail extends downward and abuts against the bottom wall of the barrel, thereby forming a fine dust collection chamber and a primary dust collection chamber that can accommodate garbage in the inner and outer spaces of the first bucket tail, respectively.

12. A vacuum cleaner using the gas-dust separation device according to any one of claims 5 to 11, characterized in that: It comprises a main unit, a connecting pipe and a dust picking unit, wherein the main unit comprises a power device and the air-dust separation device, the power device is used to generate suction power, the air-dust separation device is connected to the power device to separate dust in the air, one end of the pipe cavity in the connecting pipe is connected to the air inlet of the air-dust separation device, and the other end is connected to the dust picking unit, the dust picking unit is used to pick up dust on the surface of the sedimentation object by using suction power and can provide the picked up dust to the air-dust separation device through the pipe cavity in the connecting pipe.

13. The vacuum cleaner according to claim 12, characterized in that The main unit also includes a hand-held device, which is used for users to hold and operate. The hand-held device is arranged on the side of the gas-dust separation device. The power device, the gas-dust separation device and the hand-held device are interconnected to form an integrated device.

Images