Cyclone separator, and gas-dust separation assembly and vacuum cleaner using same

Abstract

The cyclone separator and the gas-dust separation assembly and the vacuum cleaner applying the cyclone separator comprise an annular outer shell, a shell cavity for cyclone is defined by the outer shell, and the upper end and the lower end of the outer shell are open; a side opening extending in the axial direction is formed in the outer shell, the right side wall of the side opening extends outwards in the tangential direction to form a right side guide wall, and the right side guide wall is used for guiding outside air to enter the shell cavity from the outside of the outer shell in the tangential direction; the air port baffle covers the lower half part of the side port when viewed from the horizontal direction; the dust collection device further comprises a dust barrel and a first separation body, the dust barrel comprises a barrel side wall and a barrel bottom wall, and a dust barrel cavity is defined by the barrel side wall and the barrel bottom wall; comprising a main body unit, a connecting pipeline and a dust picking unit, wherein the main body unit comprises a power device and the gas-dust separation assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dust collectors, in particular to a cyclone separation body, a gas-dust separation assembly applying the same and a vacuum cleaner. BACKGROUND

[0002] A dust collector is a commonly used cleaning appliance. With the improvement of living conditions, the dust collector has been accepted by the public. The most important component affecting the dust collection effect of the dust collector is the gas-dust separation structure. Commonly used gas-dust separation structures are mostly two-stage separation. For example, a Chinese patent with the publication number CN107157400A discloses a cyclone separation assembly and a dust collector. The cyclone separation assembly includes a barrel body and a first filter screen cover, a cyclone and a cyclone cover arranged in the barrel body. The cyclone is partially inserted into the first filter screen cover. The upper end of the cyclone has an open mouth and a ventilation hole. The cyclone cover is arranged at the open mouth of the cyclone. The ventilation hole of the cyclone is arranged above the first filter screen cover. This structure has two-stage filtration, which improves the dust separation effect of the cyclone separation assembly. However, as can be seen from the accompanying drawings, the ventilation hole of the cyclone is arranged above the first filter screen cover. This increases the height of the cyclone separation assembly, which is not conducive to the miniaturization of the dust collector.

[0003] In order to reduce the size of the cyclone separation assembly, people have made improvements. For example, a Chinese utility model patent with the publication number CN211187049U discloses a dust separator of a dust collector. The dust separator includes a shell and a cyclone separation assembly arranged in the shell. The cyclone separation assembly includes a cyclone separator and a filter barrel. The upper part of the cyclone separator is a cyclone barrel. The upper side of the cyclone barrel is provided with a two-stage air inlet. The filter barrel covers the outside of the cyclone barrel. The lowest surface of the two-stage air inlet is not lower than the highest surface of the filter screen hole of the filter barrel. The lowest surface of the two-stage air inlet is not lower than the lowest surface of the two-stage blocking rib. In this dust separator structure, the filter barrel is arranged outside the cyclone barrel of the cyclone separator, which can effectively reduce the height of the cyclone separator. However, in order to block the two-stage air inlet of the cyclone barrel, the filter barrel needs to be moved downward and the number of filter screen holes needs to be reduced, which will affect the air flow efficiency of the filter screen holes. SUMMARY

[0004] In order to overcome at least one of the above problems in the prior art, the present application provides a cyclone separator, comprising a circular outer shell defining a cyclone shell cavity, the upper and lower ends of the outer shell being open; the outer shell is provided with an axially extending side port, the right side wall of the side port extends outward in a tangential direction to form a right side guide wall, which is used to guide the outside wind to enter the shell cavity from the outside of the outer shell in a tangential direction; it also includes a wind port baffle, which blocks the lower half of the side port from the horizontal direction, wherein the wind port baffle is not only connected to the left side wall, the right side guide wall of the side port, but also connected to the lower side wall of the side port, so that the outside wind can only enter the side port after passing over the wind port baffle, and the upper end edge of the wind port baffle intersects with the left side wall of the side port at intersection point K, the distance between intersection point K and the left side edge of the side port is not less than half the width of the side port.

[0005] Wherein, the outer shell is a circular member, in practical application, the outer shell has a variety of specific shapes, at least including the following structures or combinations, first, the outer shell is a straight barrel; second, the outer shell is a truncated inverted cone; third, the outer shell includes upper and lower two sections, the upper section is a barrel, and the lower section is a truncated inverted cone. However, no matter how the shape changes, the inner side wall surface of the outer shell is smooth, which can make the airflow flow smoothly along the outer shell. In addition, the outer shell can at least partially or entirely fall into the first separator mentioned below.

[0006] Wherein, the upper and lower ends of the outer shell are respectively an upper end opening and a lower end opening, wherein the upper end opening is connected to the upper cover plate, and the lower end opening is an opening for discharging separated dust and impurities.

[0007] Wherein, the side port on the outer shell is an opening for external airflow to enter the cavity, and the side port is arranged on the upper end of the outer shell, generally close to the upper end opening or communicated with the upper end opening.

[0008] Wherein, the right side guide wall is a plate-shaped wall connected to the outer shell, and the inner side wall surface of the right side guide wall is smoothly tangent to the inner side wall surface of the outer shell.

[0009] The air port baffle is arranged outside the side port and can block the side port in the horizontal direction, and the part of the wall body of the air port baffle is connected to the outer shell body, and the part of the wall body outside the side port is arranged in a spaced manner with the outer shell body, that is, a gap for air flow is formed between the part of the wall body of the air port baffle and the shell body, so that the air flow bypassing the air port baffle can flow to the side port from the gap between the air port baffle and the shell body. In a specific embodiment, the air port baffle is in the shape of a half basin and includes a basin bottom wall and a basin side wall, the basin side wall includes a main side plate in the shape of a circular arc, a left side plate connected to a left side wall of the side port from the left side of the main side plate, and a right side plate connected to a wall body behind the air port baffle of the outer shell body from the right side of the main side plate, the basin bottom wall is connected to a lower side wall of the side port from the basin side wall, and the right side guide wall connects the basin bottom wall and the main side plate.

[0010] Compared with the prior art, the beneficial technical effects of the present application are that in order to reduce the overall size of the dust collector, the cyclone separation body is placed in the first separation body, in order to ensure the number of filter screen holes of the first separation body, the lower half of the side port of the outer shell body is necessarily exposed to the inside of the filter screen holes, so that the wind directly enters the shell cavity from the lower half of the side port after passing through the filter screen holes. This air flow mode directly affects the dust removal efficiency of the dust collector. The present application sets the air port baffle outside the side port, which can effectively block the external wind from directly entering the shell cavity from the lower half of the side port, so that the air inside and outside the filter screen needs to flow for a longer distance, which is beneficial to improve the dust removal effect of the dust collector.

[0011] The present application also provides a dust and gas separation assembly using the cyclone separation body, which comprises an upper cover plate, an exhaust pipe is arranged on the upper cover plate, the upper cover plate is detachably connected to the upper end opening of the cyclone separation body, the exhaust pipe is inserted into the shell cavity through the upper end opening, an annular air duct is formed between the exhaust pipe and the outer shell body, and the lower end of the exhaust pipe is lower than the side port.

[0012] Further, the dust bucket and the first separating body are further included, the dust bucket includes a bucket side wall and a bucket bottom wall, the bucket side wall and the bucket bottom wall define a dust bucket cavity, and an air inlet is further arranged on the bucket side wall; the first separating body is funnel-shaped and includes an upper bucket body and a lower bucket body, the diameter of the lower bucket body is smaller than the diameter of the upper bucket body, when the first separating body is arranged in the dust bucket cavity, the upper end of the upper bucket body is connected to the bucket side wall, the lower end of the lower bucket body abuts against the bucket bottom wall, the first separating body divides the dust bucket cavity into an outer separating cavity and an inner separating cavity, the upper cover plate and the cyclone separating body are arranged in the inner separating cavity, and an annular filter screen through which air flows is arranged on the upper bucket body, air flowing from the air inlet can sequentially pass through the outer separating cavity and the annular filter screen and enter the inner separating cavity.

[0013] Wherein, at least part of the outer shell of the cyclone separating body is inserted into the upper bucket body, from the horizontal direction, the lower half of the side port and the annular filter screen form an overlapping area, and the air port baffle is arranged between the side port and the annular filter screen and can completely block the overlapping area. The advantage of such an arrangement is that the area of the annular filter screen can be increased as much as possible to ensure the air flow volume, and at the same time, the air flow forms a bypass route through the blocking of the air port baffle and does not directly rush into the side port, which is beneficial to improve the dust separation efficiency.

[0014] Due to the above advantages of the air-dust separation assembly, it can be applied to a vacuum cleaner.

[0015] Due to the above characteristics and advantages of the application, it can be applied to the cyclone separating body and the air-dust separation assembly and the vacuum cleaner. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the axial direction of the vacuum cleaner applying the technical scheme of the application;

[0017] Figure 2 It is a schematic structural diagram of the axial direction of the air-dust separation assembly;

[0018] Figure 3 It is a schematic structural diagram of the explosion of the air-dust separation assembly;

[0019] Figure 4 It is a schematic structural diagram of the cross section of the air-dust separation assembly;

[0020] Figure 5 It is a schematic structural diagram of the axial direction of the cyclone separating body;

[0021] Figure 6 It is a schematic structural diagram of the front direction of the cyclone separating body;

[0022] Figure 7is a schematic view of the structure of the cyclone separator in the A-A direction;

[0023] Figure 8 is Figure 7 is a schematic view of the structure of the cyclone separator in the A-A direction. DETAILED DESCRIPTION

[0024] The structure of the cyclone separator according to the present application and the air-dust separation assembly and vacuum cleaner using the same will be further described below with reference to the accompanying drawings.

[0025] The various embodiments disclosed below can be selectively applied or combined in one embodiment even if there is no direct correlation or synergy in terms of function, except for the embodiments explicitly described as equivalent or alternative.

[0026] As Figure 1 As shown in FIG. 1, a vacuum cleaner includes a main unit 11, a connecting duct 12, and a dust pickup unit 13. The main unit 11 includes a power device (not shown) for generating suction power and an air-dust separation assembly 2 connected to the power device for separating dust from air. The connecting duct 12 has a duct cavity connected at one end to the air-dust separation assembly 2 and at the other end to the dust pickup unit 13. The dust pickup unit 13 is configured to pick up dust from a surface to be cleaned by the suction power and to supply the picked-up dust to the air-dust separation assembly 2 through the duct cavity of the connecting duct 12.

[0027] As Figures 2-4As shown, the air-dust separation assembly 2 includes a dust bucket 3 and a first separation body 4. The dust bucket 3 includes a bucket side wall 31 and a bucket bottom wall 32, which define a dust bucket cavity 30. An air inlet 33 is arranged on the bucket side wall 31 and communicates with one end of a pipe cavity in the connecting pipe 12 for receiving the air flow with dust picked up by the dust pickup unit 13. The first separation body 4 is funnel-shaped and includes an upper funnel body 41 and a lower funnel body 42. The diameter of the lower funnel body 42 is smaller than that of the upper funnel body 41. When the first separation body 4 is arranged in the dust bucket cavity 30, the upper end of the upper funnel body 41 is connected to the bucket side wall 31, and the lower end of the lower funnel body 42 abuts against the bucket bottom wall 32. The first separation body 4 divides the dust bucket cavity 30 into an outer separation cavity 301 and an inner separation cavity 302. In this way, the air flow with dust enters the outer separation cavity 301 from the air inlet 33 and rotates in the outer separation cavity 301 along the inner wall of the dust bucket 3, thereby achieving first-stage separation of dust. The separated dust falls to the bottom of the dust bucket cavity 30.

[0028] Further, the air-dust separation assembly 2 is also provided with second-stage air-dust separation structure. The air-dust separation assembly 2 includes a cyclone separation body 5 and an upper cover plate 6. Figures 5-8 As shown, the cyclone separation body 5 includes a circular annular outer shell 51, which defines a cyclone shell cavity 50. The upper and lower ends of the outer shell 51 are open, i.e., an upper end opening 52 and a lower end opening 53. An axial side opening 54 is arranged on the outer shell 51, through which the air flow can enter the shell cavity 50. The upper cover plate 6 includes a cover plate body 61 and an exhaust pipe 62. The cover plate body 61 is disc-shaped, and the exhaust pipe 62 is arranged on the cover plate body 61 and penetrates the cover plate body 61. The upper cover plate 6 is detachably connected to the upper end opening 52 of the cyclone separation body 5. The exhaust pipe 62 is inserted into the shell cavity 50 through the upper end opening 52, and an annular air duct is formed between the exhaust pipe 62 and the outer shell 51. The lower end of the exhaust pipe 62 is lower than the side opening 54.

[0029] The upper cover plate 6 is arranged in the inner separation chamber 302 with the cyclone separation body 5. In this embodiment, the cover plate body 61 of the upper cover plate 6 extends in the radial direction and can be lapped on the barrel side wall 31, and the upper end of the upper bucket body 41 is connected to the bottom of the cover plate body 61 to realize the connection with the barrel side wall 31. Further, the annular filter screen 43 through which the airflow can pass is arranged on the upper bucket body 41, so that the airflow entering from the air inlet 33 can enter the inner separation chamber 302 in sequence through the outer separation chamber 301 and the annular filter screen 43. The airflow entering the inner separation chamber 302 can further rotate and flow along the annular air duct after entering the housing cavity 50 from the side opening 54, so as to realize the second-stage air-dust separation.

[0030] In order to enable the airflow to better form a rotating flow in the housing cavity 50, the right side wall of the side opening 54 extends outward in the tangential direction to form a right side guide wall 55, which is used to guide the external wind to enter the housing cavity 50 from the outside of the outer housing 51 in the tangential direction. The right side guide wall 55 is a plate-shaped wall connected to the outer housing 51, and the inner side wall surface of the right side guide wall 55 is smoothly connected in transition with the inner side wall surface of the outer housing 51.

[0031] Further, at least part of the outer housing 51 of the cyclone separation body 5 is inserted into the upper bucket body 41, and the lower half of the side opening 54 overlaps with the annular filter screen 43 from the horizontal direction. In order to reduce the airflow directly passing through the filter screen holes and then entering the housing cavity 50 through the side opening 54, the cyclone separation body 5 further comprises a wind port baffle 56, which blocks the lower half of the side opening 54 from the horizontal direction. The wind port baffle 56 is connected to the left side wall, the right side guide wall 55 and the lower side wall of the side opening 54, so that the external wind can only enter the side opening 54 after passing over the wind port baffle 56. The wind port baffle 56 is arranged between the side opening 54 and the annular filter screen 43 and can completely block the overlapping area. The advantage of this arrangement is that the area of the annular filter screen 43 can be increased as much as possible to ensure the airflow volume, and the airflow forms a detour route through the blocking of the wind port baffle 56 without directly rushing into the side opening 54, which requires the airflow inside and outside the filter screen to flow for a longer distance, which not only can effectively reduce the size of the air-dust separation assembly 2, but also is beneficial to improve the dust removal effect of the dust collector. In addition, by arranging the wind port baffle 56, the number of mesh holes of the annular filter screen 43 can be ensured, which is beneficial to improve the airflow volume of the annular filter screen 43 and thus improve the dust removal efficiency.

[0032] The air outlet baffle 56 is arranged outside the side opening 54 and capable of horizontally blocking the side opening 54. The part of the wall of the air outlet baffle 56 is connected to the outer shell 51, and the part of the wall outside the side opening 54 is arranged separately from the outer shell 51, that is, a gap for air flow is formed between the part of the wall of the air outlet baffle 56 and the outer shell 51, so that the air flow bypassing the air outlet baffle 56 can flow to the side opening 54 from the gap between the air outlet baffle 56 and the shell. In order to make the wind flow a longer distance before entering the side opening 54, the upper end edge of the air outlet baffle 56 intersects the left side wall of the side opening at intersection K in the axial direction of the outer shell 51, and the distance between intersection K and the left side edge of the side opening 54 is not less than half the width of the side opening 54. In this way, the wind can flow at least a distance around the side of the side opening 54 and then flow upward to bypass the air outlet baffle 56 and flow to the side opening 54. In this embodiment, the air outlet baffle 56 extends to the right of the right side guide wall 55 beyond the right side guide wall 55 and is connected to the wall of the outer shell 51 behind the air outlet baffle 56. The air outlet baffle 56 is in the shape of a half-pot and includes a pot bottom wall 561 and a pot side wall 562. The pot side wall 562 includes a main side plate 563 in the shape of a circular arc, a left side plate 564 connected to the left side wall of the side opening 54 from the left side of the main side plate 563, and a right side plate 565 connected to the wall of the outer shell 51 behind the air outlet baffle 56 from the right side of the main side plate 563. The pot bottom wall 561 is connected to the lower side wall of the side opening 54 from the pot side wall 562, and the right side guide wall 55 connects the pot bottom wall 561 and the main side plate 563.

[0033] Further, the height of the pot side wall 562 occupies one fifth to two thirds of the axial height of the side opening 54 as viewed in the horizontal direction. The radial distance between the main side plate 563 and the outer shell 51 is not less than the width of the side opening 54 as viewed in the axial direction.

[0034] Further, a left side guide wall 57 extends outwardly from the left side wall of the side opening 54. The left side guide wall 57 is parallel to the right side guide wall 55, and the protruding length of the left side guide wall 57 is not greater than 20% of the protruding length of the right side guide wall 55. The left side guide wall 57, the right side guide wall 55, and the pot bottom wall 561 cooperate to form a tangential air inlet channel of the shell cavity 50.

[0035] Further, the left side plate 564 and the right side plate 565 on both sides of the side wall 562 of the basin are inclined, so that the air port baffle 56 has a large upper opening and a small lower bottom surface.

Claims

1. A cyclone separator comprising an outer housing in the form of a circular ring, said outer housing defining a housing cavity for cyclone purposes, said outer housing being open at its upper and lower ends; characterized in that, The outer shell is provided with an axially extending side opening, a right side wall of the side opening extends outward in a tangential direction to form a right side guide wall for guiding external wind to enter the shell cavity from the outside of the outer shell in a tangential direction; further comprising a air inlet baffle, from the horizontal direction, the air inlet baffle blocks the lower half of the side opening, wherein the air inlet baffle is connected to the left side wall, the right side guide wall and the lower side wall of the side opening, so that the external wind can only enter the side opening after passing through the air inlet baffle, from the axial direction of the outer shell, the upper end edge of the air inlet baffle intersects with the left side wall of the side opening at intersection point K, the distance between intersection point K and the left side edge of the side opening is not less than half the width of the side opening.

2. The cyclonic separation body of claim 1, wherein, The air inlet baffle further extends to the right of the right side guide wall and is connected to the wall of the outer shell behind the air inlet baffle.

3. The cyclonic separation body of claim 2, wherein, The air inlet baffle is in the shape of a half-pot and includes a pot bottom wall and a pot side wall, the pot side wall includes a main side plate in the shape of a circular arc, a left side plate connected to the left side wall of the side opening from the left side of the main side plate, and a right side plate connected to the wall of the outer shell behind the air inlet baffle from the right side of the main side plate, the pot bottom wall is connected to the lower side wall of the side opening from the pot side wall, and the right side guide wall connects the pot bottom wall and the main side plate.

4. The cyclonic separation body of claim 3, wherein, From the horizontal direction, the height of the pot side wall occupies one fifth to two thirds of the axial height of the side opening.

5. The cyclonic separation body of claim 3, wherein, From the axial direction, the radial distance between the main side plate and the outer shell is not less than the width of the side opening.

6. The cyclonic separation body of claim 3, wherein, A left side guide wall extends outward from the left side wall of the side opening, the left side guide wall is parallel to the right side guide wall, the protruding length of the left side guide wall is not greater than 20% of the protruding length of the right side guide wall, and the left side guide wall, the right side guide wall and the pot bottom wall cooperate to form a tangential air inlet channel of the shell cavity.

7. The cyclonic separation body of claim 3, wherein, The left side plate and the right side plate on the left and right sides of the pot side wall are inclined, so that the air inlet baffle has a large upper opening and a small lower bottom surface.

8. The air dust separating assembly using the cyclone separator according to any one of claims 1 to 7, wherein An upper cover plate is provided with an exhaust pipe, the upper cover plate is detachably connected to the upper end opening of the cyclone separation body, the exhaust pipe is inserted into the shell cavity through the upper end opening, an annular air duct is formed between the exhaust pipe and the outer shell, and the lower end of the exhaust pipe is lower than the side opening.

9. The gas-dust separation assembly according to claim 8, characterized in that The dust bucket comprises a bucket side wall and a bucket bottom wall, which define a dust bucket cavity, and an air inlet is arranged on the bucket side wall; the first separating body is funnel-shaped and comprises an upper hopper body and a lower hopper body, the diameter of the lower hopper body is smaller than that of the upper hopper body, when the first separating body is arranged in the dust bucket cavity, the upper end of the upper hopper body is connected to the bucket side wall, the lower end of the lower hopper body abuts against the bucket bottom wall, the first separating body divides the dust bucket cavity into an outer separating cavity and an inner separating cavity, the upper cover plate and the cyclone separating body are arranged in the inner separating cavity, an annular filter screen is arranged on the upper hopper body and can allow airflow to pass through, and the airflow entering from the air inlet can sequentially pass through the outer separating cavity and the annular filter screen and enter the inner separating cavity.

10. The gas-dust separation assembly according to claim 9, characterized in that At least part of the outer shell of the cyclone separating body is inserted into the upper hopper body, from the horizontal direction, the lower half of the side port and the annular filter screen form an overlapping area, and the air port baffle is arranged between the side port and the annular filter screen and can completely block the overlapping area.

11. A vacuum cleaner incorporating a dust separation assembly according to any one of claims 8 to 10, characterised in that, The dust collecting device comprises a main unit, a connecting pipeline and a dust pickup unit, wherein the main unit comprises a power device and a gas-dust separating assembly, the power device is used for generating suction power, the gas-dust separating assembly is connected to the power device and is used for separating dust in air, a pipeline cavity in the connecting pipeline is connected to the gas-dust separating assembly at one end and is connected to the dust pickup unit at the other end, and the dust pickup unit is used for picking up dust on a sediment surface by using the suction power and can provide the picked-up dust to the gas-dust separating assembly through the pipeline cavity in the connecting pipeline.

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