Vacuum device and vacuum cleaning equipment

Abstract

The present invention relates to a dust suction device and a dust suction equipment. The dust suction device includes: a housing; an air flow generator disposed inside the housing to provide an air flow suction force for driving external air flow to flow into the dust suction device; a first air-dust separation member disposed inside the housing and having a first air-dust separation chamber located upstream of the air flow generator; wherein, the first air-dust separation member is disposed around the outer periphery of the air flow generator, that is, a first air-dust separation chamber is disposed around the outer periphery of the air flow generator, and the noise generated when the air flow generator works can be absorbed through the first air-dust separation chamber, reducing the noise of the dust suction device. Moreover, an exhaust passage is formed by enclosing between the air flow generator and the first air-dust separation member, which is equivalent to the exhaust passage being located around the outer periphery of the air flow generator, and the noise generated when the air flow generator works can be further absorbed, further reducing the noise of the dust suction device.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum cleaning, in particular to a vacuum cleaning device and a vacuum cleaning equipment. Background Art

[0002] With the improvement of people's living standards, the requirements for the surrounding clean environment are also getting higher and higher. Especially in household cleaning, it is necessary to thoroughly clean the dirt inside the house. However, the traditional method cannot meet the cleanliness of the indoor environment, and it is time-consuming and laborious. While a vacuum cleaner can effectively and quickly clean the stains and dirt indoors, meeting people's requirements. Therefore, it is widely used by people.

[0003] A vacuum cleaner includes a motor and a separator. The motor is used to drive external air flow into the separator. After the separator separates the dust in the air flow, clean air is discharged. Among them, when the motor works, it provides air power and will generate relatively large noise, which affects the user's use of the vacuum cleaner. Summary of the Invention

[0004] Based on this, it is necessary to provide a vacuum cleaning device and a vacuum cleaning equipment with relatively low noise during operation.

[0005] A vacuum cleaning device includes:

[0006] A housing;

[0007] An air flow generator, arranged inside the housing, providing an air flow suction force to drive external air flow into the vacuum cleaning device;

[0008] A first air-dust separation member, arranged inside the housing, and having a first air-dust separation chamber located upstream of the air flow generator;

[0009] Wherein, the first air-dust separation member is arranged around the outer periphery of the air flow generator, and an exhaust passage is formed between the first air-dust separation member and the air flow generator, which is located downstream of the air flow generator and communicates with the air flow generator.

[0010] In the above dust suction device, the first air-dust separation member is disposed around the outer periphery of the air flow generator, and a first air-dust separation chamber is formed inside the first air-dust separation member. Thus, by providing the first air-dust separation chamber around the outer periphery of the air flow generator, the noise generated when the air flow generator operates can be absorbed through the first air-dust separation chamber, reducing the noise of the dust suction device. Moreover, an exhaust passage that is located downstream of the air flow generator and communicates with the air flow generator is formed between the first air-dust separation member and the air flow generator. The clean air flowing out of the first air-dust separation chamber enters the exhaust passage after passing through the air flow generator and is discharged to the outside from the exhaust passage. At the same time, the exhaust passage is formed by enclosing between the air flow generator and the first air-dust separation member, which is equivalent to the exhaust passage being located around the outer periphery of the air flow generator, and can further absorb the noise generated when the air flow generator operates, further reducing the noise of the dust suction device, improving the quietness, and facilitating the user to use the vacuum cleaner.

[0011] In one embodiment, it further includes a second air-dust separation member having a second air-dust separation chamber. An air inlet communicating with the second air-dust separation chamber is formed on the second air-dust separation member, and the second air-dust separation chamber is located upstream of the first air-dust separation chamber and communicates with the first air-dust separation chamber.

[0012] In one embodiment, an air inlet passage is formed between the housing and the first air-dust separation member, and the air inlet passage communicates between the first air-dust separation chamber and the second air-dust separation chamber.

[0013] In one embodiment, it further includes a dust collection member connected to the first air-dust separation member. The dust collection member is located in the direction of gravity of the first air-dust separation member and has a first dust collection chamber communicating with the first air-dust separation chamber.

[0014] In one embodiment, the dust collection member is sleeved inside the second air-dust separation member;

[0015] The bottom end of the dust collection member away from the first air-dust separation member is open, and the open bottom end of the dust collection member abuts against the bottom wall of the second dust separation member.

[0016] In one embodiment, it further includes a filter screen. The filter screen is sleeved at intervals between the housing and the dust collection member and is located on the air flow path from the second air-dust separation chamber to the first air-dust separation chamber.

[0017] In one embodiment, it further includes a deflector having a deflector chamber. The deflector is docked with the first air-dust separation member corresponding to the air outlet side of the air flow generator, and the deflector chamber communicates between the air outlet of the air flow generator and the inlet of the exhaust passage.

[0018] In one embodiment, the flow guiding member includes a main body and a connecting plate. The main body has the flow guiding cavity, the connecting plate is disposed on the main body, and the first air-dust separation member is docked with the connecting plate.

[0019] In one embodiment, it further includes a drainage member disposed inside the housing.

[0020] Wherein, the exhaust port of the first air-dust separation member and the suction port of the air flow generator are located at the same end inside the housing. The drainage member is disposed on the suction side of the air flow generator and has a drainage channel connecting the exhaust port of the first air-dust separation member and the suction port of the air flow generator.

[0021] In one embodiment, a drainage cavity communicating with the outlet of the exhaust channel is formed between the drainage member and the housing, and an exhaust hole communicating with the drainage cavity is formed on the housing.

[0022] In one embodiment, the housing includes a top wall and a side wall disposed around the outer periphery of the top wall. The drainage member is disposed inside the housing relative to the top wall and encloses the drainage cavity with the top wall and the side wall. The exhaust hole is formed on a part of the side wall enclosing the drainage cavity.

[0023] A dust collection device includes the above-mentioned dust collection apparatus. Description of the Drawings

[0024] Figure 1 It is a schematic structural diagram of the dust collection apparatus in an embodiment of the present invention;

[0025] Figure 2 It is Figure 1 a schematic cross-sectional view of the dust collection apparatus shown in one direction;

[0026] Figure 3 It is Figure 1 a schematic cross-sectional view of the dust collection apparatus shown in another direction;

[0027] Figure 4 Figure 1 a schematic structural diagram of the first air-dust separation member in the dust collection apparatus shown in one perspective;

[0028] Figure 5 It is Figure 4 a schematic structural diagram of the first air-dust separation member shown in another perspective;

[0029] Figure 6 It is Figure 1 a schematic assembly diagram of the first air-dust separation member and the drainage member in the dust collection apparatus shown in one perspective;

[0030] Figure 7 It isFigure 6 Assembly schematic diagram of the first air-dust separator and the drainage component from another perspective as shown Detailed implementation manners

[0031] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items

[0034] As Figures 1-3 As shown, in an embodiment of the present invention, a dust suction device 100 is provided, which includes a housing 10, a power source 16, and an air flow generator 30 and a first air-dust separator 50 both disposed in the housing 10

[0035] The power source 16 is used to supply power to the air flow generator 30. The air flow generator 30 provides an air flow suction force to drive the external air flow into the vacuum cleaner. The first air-dust separator 50 has a first air-dust separation chamber 52 located upstream of the air flow generator 30. When the air flow generator 30 operates, the generated air flow suction force drives the external air flow into the first air-dust separation chamber 52 for air-dust separation. The clean air after the dust separation flows out of the first air-dust separation chamber 52 and is discharged to the outside through the air flow generator 30, thus completing the dust suction work

[0036] As Figure 2 And Figure 7As shown, in some embodiments, the first air-dust separator 50 is disposed around the outer periphery of the air flow generator 30, and a first air-dust separation chamber 52 is formed inside the first air-dust separator 50. In this way, the first air-dust separation chamber 52 surrounds the outer periphery of the air flow generator 30, and the noise generated when the air flow generator 30 operates can be absorbed through the first air-dust separation chamber 52, reducing the noise of the dust collection device 100. Moreover, an exhaust passage 60 is formed between the first air-dust separator 50 and the air flow generator 30, which is located downstream of the air flow generator 30 and communicates with the air flow generator 30. The clean air flowing out of the first air-dust separation chamber 52 enters the exhaust passage 60 after passing through the air flow generator 30 and is discharged to the outside from the exhaust passage 60. At the same time, the exhaust passage 60 is formed by surrounding between the air flow generator 30 and the first air-dust separator 50, which is equivalent to the exhaust passage 60 being located around the outer periphery of the air flow generator 30, and can further absorb the noise generated when the air flow generator 30 operates, further reducing the noise of the dust collection device 100 and improving the quietness, facilitating the user to use the vacuum cleaner.

[0037] As Figures 4-5 shown, specifically, the first air-dust separator 50 includes a plurality of first sub-air-dust separators 51, and the first air-dust separation chamber 52 includes a plurality of first sub-air-dust separation chambers 521 formed in each first sub-air-dust separator 51. The plurality of first sub-air-dust separators 51 are arranged and connected in a ring shape around the outer periphery of the air flow generator 30. The first sub-air-dust separation chamber 521 in each first sub-air-dust separator 51 performs air-dust separation on the inflowing air, and the air-dust separation is efficiently performed through the plurality of first sub-air-dust separation chambers 521. At the same time, the noise generated by the air flow generator 30 is absorbed through the plurality of first sub-air-dust separation chambers 521 surrounding the outer periphery of the air flow generator 30.

[0038] Optionally, each first sub-air-dust separator 51 is a cyclone separator. When the air flow with dust and dirt enters the cyclone separator, it rotates spirally downward. During the rotation, the dust and dirt can obtain a larger centrifugal force due to their larger mass, and finally hit the inner wall of the cyclone separator and fall into the dust collection chamber under the action of its own gravity. At the same time, the clean air is discharged from the cyclone separator, thus realizing air-dust separation.

[0039] As Figures 2-3As shown, in some embodiments, the dust suction device 100 further includes a second gas-dust separation member 40 having a second gas-dust separation chamber 41. An air inlet 43 communicating with the second gas-dust separation chamber 41 is formed on the second gas-dust separation member 40, and the second gas-dust separation chamber 41 is located upstream of the first gas-dust separation chamber 52 and communicates with the first gas-dust separation chamber 52. That is to say, a second gas-dust separation member 40 is further provided before the first gas-dust separation member 50. The air suction force generated by the air flow generator 30 drives the air flow to first enter the second gas-dust separation member 40 for primary gas-dust separation, and then enter the first gas-dust separation member 50 for secondary gas-dust separation, so as to achieve secondary gas-dust separation of the air, with a higher gas-dust separation rate and better separation effect.

[0040] Furthermore, an air inlet passage 12 is formed between the housing 10 and the first gas-dust separation member 50. The air inlet passage 12 communicates between the first gas-dust separation chamber 52 and the second gas-dust separation chamber 41. The air flow in the second gas-dust separation chamber 41 enters the first gas-dust separation chamber 52 through the air inlet passage 12. Moreover, the first gas-dust separation member 50 is disposed around the outer periphery of the air flow generator 30, and the air inlet passage 12 located between the first gas-dust separation member 50 and the housing 10 also surrounds the outside of the first gas-dust separation member 50, and thus is located around the outer periphery of the air flow generator 30. In this way, the noise generated by the air flow generator 30 can also be absorbed through the air inlet passage 12.

[0041] Specifically, an exhaust passage 60 located between the air flow generator 30 and the first gas-dust separation member 50, a first gas-dust separation chamber 52 located inside the first gas-dust separation member 50, and an air inlet passage 12 located between the first gas-dust separation member 50 and the housing 10 are sequentially disposed around the outside of the air flow generator 30. That is, the exhaust passage 60, the first gas-dust separation chamber 52, and the air inlet passage 12 are arranged in sequence from the inside to the outside around the outer periphery of the air flow generator 30, absorbing the noise generated by the air flow generator 30 in multiple layers, effectively reducing the noise transmitted during the operation of the dust suction device 100, and improving the user experience.

[0042] In some embodiments, the dust suction device 100 further includes a diversion member 70, and the diversion member 70 is disposed inside the housing 10. Moreover, the exhaust port of the first gas-dust separation member 50 and the suction port of the air flow generator 30 are located at the same end inside the housing 10. The diversion member 70 is disposed on the suction side of the air flow generator 30 and has a diversion channel 72 connecting the exhaust port of the first gas-dust separation member 50 and the suction port of the air flow generator 30. The clean air discharged from the first gas-dust separation member 50 flows to the air flow generator 30 through the diversion channel 72. At the same time, the exhaust port of the first gas-dust separation member 50 is located on the suction side of the air flow generator 30. The diversion channel 72 only needs to be provided at the suction end of the air flow generator 30 to connect the exhaust port of the first gas-dust separation member and the suction port of the air flow generator 30. The diversion channel 72 is short, the flow resistance of the air flow is small, the air flow velocity is accelerated, and the suction flow rate is increased.

[0043] Specifically, the air flow generator 30 includes a motor and a fan connected to the output end of the motor. When the motor operates, it drives the fan to rotate, thereby forming an air flow suction force that drives the air flow into the dust collection device 100. Among them, the end of the air flow generator 30 with the fan is the suction end. The end of the air flow generator 30 with the fan is arranged on the same side as the exhaust end of the first air-dust separation member 50. In this way, the suction end of the air flow generator 30 and the exhaust end of the first air-dust separation member 50 can be arranged on the same side, reducing the resistance of the air flow flowing between the first air-dust separation member 50 and the air flow generator 30.

[0044] More specifically, the dust collection device 100 further includes a pre-filter 32. The pre-filter 32 is sleeved on the suction end of the air flow generator 30, that is, the pre-filter 32 is sleeved on the end of the air flow generator 30 with the fan, and the pre-filter 32 is communicated with the diversion channel 72 to filter the air flow flowing from the diversion channel 72 into the air flow generator 30, preventing dust from accumulating inside the air flow generator 30. Moreover, an installation opening 15 corresponding to the suction end of the air flow generator 30 is formed on the housing 10. The pre-filter 32 is detachably assembled in the installation opening 15. When it is necessary to clean the pre-filter 32, the pre-filter 32 can be conveniently detached from the installation opening 15 of the housing 10.

[0045] Furthermore, a diversion cavity 74 communicated with the outlet of the exhaust channel 60 is formed by enclosing between the diversion member 70 and the housing 10. An exhaust hole 14 communicated with the diversion cavity 74 is formed on the housing 10. After the diversion member 70 is arranged on the suction side of the air flow generator 30, a diversion cavity 74 communicated with the outlet of the exhaust channel 60 is also formed by enclosing between the outer wall of the diversion member 70 and the inner wall of the housing 10. The clean air in the exhaust channel 60 is discharged to the outside through the exhaust hole 14 through the diversion cavity 74. In this way, the diversion member 70 not only forms a diversion channel 72 inside itself, but also defines a diversion cavity 74 between the diversion member 70 and the housing 10, realizing multiple functions.

[0046] As Figures 4-6 shown, specifically, a first through hole 53 is formed on the first air-dust separation member 50. The first through hole 53 is communicated with the outlet of the exhaust channel 60. A second through hole 73 corresponding to the first through hole 53 is formed on the diversion member 70. The second through hole 73 is communicated with the diversion cavity 74. The air flow enters the diversion cavity 74 after passing through the first through hole 53 and the second through hole 73 from the exhaust channel 60, and is finally discharged through the exhaust hole 14.

[0047] As Figure 3As shown, further, the housing 10 includes a top wall 11 and a side wall 13 arranged around the periphery of the top wall 11, the flow guide 70 is arranged in the housing 10 relative to the top wall 11 and encloses the top wall 11 and the side wall 13 to form a flow chamber 74, and an exhaust hole 14 is opened on the part of the side wall 13 enclosed to form the flow chamber 74, so that the exhaust hole 14 is connected to the flow chamber 74, and the exhaust hole 14 is located in the upper half of the side wall 13 close to the top wall 11. In this way, the air is discharged from the upper half of the side of the housing 10, and the discharged airflow will not blow to the clean surface that has been vacuumed, and will not blow the dust in the uncleaned area to the clean surface, so as to prevent affecting the cleaning effect. In addition, the air will not be directly discharged from the top of the housing 10 and blow to the operator's face, which protects the operator, facilitates the user's use, and improves the user experience.

[0048] like Figures 2-3 As shown, in some embodiments, the dust collecting device 100 further includes a guide member 90 having a guide cavity 92, the guide member 90 is connected to the first gas-dust separator 50 corresponding to the air outlet side of the airflow generator 30, and the guide cavity 92 is connected between the air outlet of the airflow generator 30 and the entrance of the exhaust channel 60. As can be seen from the above description, the exhaust channel 60 is arranged around the outer periphery of the airflow generator 30, so the extension direction of the exhaust channel 60 is parallel to the airflow direction in the airflow generator 30, and in order to allow the airflow flowing vertically from the airflow generator 30 to enter the adjacent vertical exhaust channel 60, the guide member 90 is arranged on the air outlet side of the airflow generator 30, and the airflow discharged from the airflow generator 30 is guided to enter the exhaust channel 60 through the guide member 90.

[0049] Specifically, the guide member 90 includes a body 91 and a connecting plate 93, the body 91 has a guide cavity 92, the connecting plate 93 is disposed on the body 91, and the first gas-dust separator 50 is connected to the connecting plate 93. When assembling the dust collecting device 100, the first gas-dust separator 50 can be matched to the connecting plate 93, and the body 91 connected to the connecting plate 93 is directed toward the air outlet end of the airflow generator 30 surrounded by the first gas-dust separator 50, so as to guide the airflow from the air outlet end of the airflow generator 30 into the adjacent exhaust channel 60.

[0050] In some embodiments, the dust suction device 100 also includes a dust collecting piece 80 connected to the first air-dust separator 50. The dust collecting piece 80 is located in the gravity direction of the first air-dust separator 50 and has a first dust collecting chamber 81 connected to the first air-dust separation chamber 52. When the airflow carrying dust rotates at a high speed in the first air-dust separation chamber 52, the dust hits the inner wall of the first air-dust separation chamber 52 due to the large centrifugal force and falls into the first dust collecting chamber 81 under the action of its own gravity. The dust separated in the first air-dust separation chamber 52 is collected by the first dust collecting chamber 81.

[0051] Further, the dust collection member 80 is sleeved inside the second gas-dust separation member 40. The bottom end of the dust collection member 80 away from the first gas-dust separation member 50 is open, and the open bottom end of the dust collection member 80 abuts against the bottom wall of the second gas-dust separation member 40. In this way, the dust collection member 80 extends into the second gas-dust separation chamber 41, and the second gas-dust separation chamber 41 accommodates the dust collection member 80. Moreover, the bottom end of the dust collection member 80 is open and abuts against the bottom wall of the second gas-dust separation chamber 41, and the dust in the first dust collection chamber 81 is supported by the bottom wall of the second gas-dust separation member 40. At the same time, the dust separated after high-speed rotation in the second gas-dust separation chamber 41 falls on the bottom wall of the second gas-dust separation member 40 under its own gravity. The dust separated by the first gas-dust separation member 50 and the second gas-dust separation member 40 ultimately accumulates on the bottom wall of the second gas-dust separation member 40. When emptying the dust, just open the bottom wall of the second gas-dust separation member 40, and the dust in the dust collection member 80 and the second gas-dust separation chamber 41 can be emptied; or, when emptying the dust, disassemble the second gas-dust separation member 40, and pour out the dust that has accumulated on the bottom wall of the second gas-dust separation member 40 through the opening that allows the dust collection member 80 to pass through the second gas-dust separation member 40, and the dust separated by the first gas-dust separation member 50 and the second gas-dust separation member 40 can be cleaned up at one time.

[0052] Optionally, the dust collection member 80 includes a dust collection section 82 and a transition section 84 connected between the dust collection section 82 and the first gas-dust separation member 50. The transition section 84 is inclined towards the dust collection section 82 in its own radial direction from outside to inside. In this way, the transition section 84 is inclined downward towards the center of the dust collection section 82 to guide the dust to gather in the dust collection section 82. At the same time, the clean air separated in the second gas-dust separation chamber 41 can be gently introduced into the intake passage 12 through the inclined transition section 84. In addition, the diameter of the transition section 84 gradually decreases in the direction from the first gas-dust separation member 50 to the dust collection section 82, and the dust collection section 82 connected to the transition section 84 is set with the minimum diameter of the transition section 84, having a smaller diameter and occupying less space in the second gas-dust separation chamber 41, and will not affect the gas-dust separation work in the second gas-dust separation chamber 41.

[0053] In some embodiments, the dust suction device 100 further includes a filter net 20. The filter net 20 is sleeved at intervals between the housing 10 and the dust collection member 80 and is located on the air flow path from the second gas-dust separation chamber 41 to the first gas-dust separation chamber 52, and filters the air flow flowing from the second gas-dust separation chamber 41 to the first gas-dust separation chamber 52 to prevent larger particulate dust from entering the first gas-dust separation chamber 52 and further improve the gas-dust separation rate.

[0054] Please refer to Figure 2 and Figure 3, the airflow path of the above dust collection device 100 is as follows: The airflow with dust enters the second air-dust separation chamber 41 from the air inlet 43, undergoes primary air-dust separation in the second air-dust separation chamber 41, then enters the air inlet passage 12 after passing through the filter net 20, enters the first air-dust separation chamber 52 from the air inlet passage 12, undergoes air-dust separation again in the first air-dust separation chamber 52, and the clean airflow from which dust has been separated flows from the first air-dust separation chamber 52 to the drainage passage 72, then to the air flow generator 30, and then enters the diversion chamber 92 from the air outlet end of the air flow generator 30 and then enters the exhaust passage 60. Finally, after entering the drainage chamber 74 communicated with the exhaust passage 60, it flows to the outside from the exhaust hole 14 on the side wall 13 of the housing 10 to complete one dust collection. When the dust collection device 100 is working, it continuously drives the airflow to flow along the above path to complete the dust collection work.

[0055] Based on the same inventive concept, in an embodiment of the present invention, there is also provided a dust collection device, including the above dust collection device 100, and the noise during operation is relatively small.

[0056] In some embodiments, the dust collection device further includes a pipe member and a cleaning member. One end of the pipe member is provided with the cleaning member, and the other end of the pipe member is sleeved at the air inlet 43. When the dust collection device is working, the cleaning member is made to contact the surface to be cleaned and lift the dust on the surface to be cleaned, so that the dust and air flow together through the pipe member to the air inlet 43 for dust collection work. Optionally, the dust collection device is a handheld vacuum cleaner.

[0057] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0058] The above-described embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. A dust suction device, characterized in that, include: Housing (10); An airflow generator (30) is disposed in the housing (10) and provides airflow suction force to drive external airflow into the dust collecting device (100); A first gas-dust separation element (50) is disposed in the housing (10) and has a first gas-dust separation chamber (52) located upstream of the airflow generator (30); Wherein, the first gas-dust separator (50) is arranged around the outer periphery of the airflow generator (30), and an exhaust passage (60) is formed between the first gas-dust separator (50) and the airflow generator (30), which is located downstream of the airflow generator (30) and connected to the airflow generator (30).

2. The dust suction device according to claim 1, characterized in that, The invention also comprises a second gas-dust separation component (40) having a second gas-dust separation chamber (41), wherein the second gas-dust separation component (40) is provided with an air inlet (43) connected to the second gas-dust separation chamber (41), and the second gas-dust separation chamber (41) is located upstream of the first gas-dust separation chamber (52) and connected to the first gas-dust separation chamber (52).

3. The dust suction device according to claim 2, characterized in that, An air inlet passage (12) is formed between the housing (10) and the first air-dust separation element (50), and the air inlet passage (12) is connected between the first air-dust separation chamber (52) and the second air-dust separation chamber (41).

4. The dust suction device according to claim 2, characterized in that, It also includes a dust collecting component (80) connected to the first gas-dust separation component (50), the dust collecting component (80) is located in the gravity direction of the first gas-dust separation component (50), and has a first dust collecting chamber (81) connected to the first gas-dust separation chamber (52).

5. The dust suction device according to claim 4, characterized in that, The dust collecting component (80) is sleeved inside the second gas-dust separating component (40); The bottom end of the dust collecting component (80) away from the first gas-dust separator (50) is in an open shape, and the bottom end of the dust collecting component (80) in an open shape abuts against the bottom wall of the second gas-dust separator (40).

6. The dust suction device according to claim 4, characterized in that It also comprises a filter screen (20), wherein the filter screen (20) is sleeved between the outer shell (10) and the dust collecting element (80) and is located on the air flow path from the second air-dust separation chamber (41) to the first air-dust separation chamber (52).

7. The dust suction device according to any one of claims 1-6, characterized in that, It also includes a flow guide member (90) having a flow guide cavity (92), wherein the flow guide member (90) is connected to the first gas-dust separator (50) corresponding to the gas outlet side of the gas flow generator (30), and the flow guide cavity (92) is connected between the gas outlet of the gas flow generator (30) and the inlet of the exhaust channel (60).

8. The dust suction device according to claim 7, characterized in that, The flow guide member (90) comprises a main body (91) and a connecting plate (93); the main body (91) has the flow guide cavity (92); the connecting plate (93) is arranged on the main body (91); and the first gas-dust separator (50) is butt-jointed with the connecting plate (93).

9. The dust suction device according to any one of claims 1-6, characterized in that, It also includes a flow guide member (70), wherein the flow guide member (70) is arranged in the housing (10); Among them, the exhaust port of the first air-dust separator (50) and the suction port of the air flow generator (30) are located at the same end within the housing (10), and the diversion member (70) is disposed on the suction side of the air flow generator (30) and has a diversion channel (72) connecting the exhaust port of the first air-dust separator (50) and the suction port of the air flow generator (30).

10. The dust suction device according to claim 9, characterized in that, A diversion cavity (74) communicating with the outlet of the exhaust channel (60) is formed by enclosing between the diversion member (70) and the housing (10), and an exhaust hole (14) communicating with the diversion cavity (74) is provided on the housing (10).

11. The dust suction device according to claim 10, characterized in that, The housing (10) includes a top wall (11) and side walls (13) disposed around the outer periphery of the top wall (11). The diversion member (70) is disposed within the housing (10) relative to the top wall (11), and the diversion cavity (74) is formed by enclosing between the diversion member (70), the top wall (11) and the side walls (13). The exhaust hole (14) is provided on a part of the side walls (13) that encloses to form the diversion cavity (74).

12. A dust suction device, characterized in that, A dust suction device comprising the dust suction device according to any one of the above claims 1-11.

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