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

Abstract

The cyclone separator and the gas-dust separation assembly and the vacuum dust collector 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 invention relates to the technical field related to vacuum cleaners, and in particular to a cyclone separator and an air-dust separation component and a vacuum cleaner using the cyclone separator. Background Art

[0002] A vacuum cleaner is a commonly used cleaning appliance. With the improvement of living conditions, vacuum cleaners have been accepted by the general public. The most important component that affects the vacuum cleaner's dust collection effect is the gas-dust separation structure, of which the commonly used gas-dust separation structure is mostly two-stage separation. For example, the Chinese invention patent with publication number CN107157400A discloses a cyclone separation assembly and a vacuum cleaner. 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, and the ventilation hole of the cyclone is arranged above the first filter screen cover. The structure is provided with two-stage filtration, which improves the dust separation effect of the cyclone separation assembly. However, it is not difficult to see from the accompanying drawings that the ventilation hole of the cyclone is arranged above the first filter screen cover, so that the height dimension of the combined cyclone separation assembly becomes larger, which is not conducive to the miniaturization of the vacuum cleaner.

[0003] In order to reduce the size of the cyclone separation component, people have made improvements. For example, the Chinese utility model patent with publication number CN211187049U discloses a dust separator for a vacuum cleaner, including a shell and a cyclone separation component arranged in the shell. The cyclone separation component includes a cyclone separator and a filter barrel. The upper part of the cyclone separator is a cyclone barrel, and a secondary air inlet is provided on the upper side of the cyclone barrel. The filter barrel is covered outside the cyclone barrel, and the lowest surface of the secondary air inlet is not lower than the highest surface of the filter mesh of the filter barrel, and the lowest surface of the secondary air inlet is not lower than the lowest surface of the secondary retaining rib. In this dust separator structure, the filter barrel is sleeved outside the cyclone barrel of the cyclone separator, which can well reduce the height size of the cyclone separator. However, in order to block the secondary air inlet of the cyclone barrel, the filter barrel has to move the filter mesh downward and reduce the number of filter meshes, which will affect the air flow efficiency of the filter meshes. Summary of the invention

[0004] In order to overcome at least one of the above-mentioned problems existing in the prior art, the present invention proposes a cyclone separator, comprising an outer shell in a circular shape, the outer shell defining a shell cavity for the cyclone, and the upper and lower ends of the outer shell being open; the outer shell is provided with a side port extending in an axial direction, the right side wall of the side port extends outward in a tangential direction to form a right side guide wall, and the right side guide wall 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 an air outlet baffle, and when viewed from the horizontal direction, the air outlet baffle blocks the lower half of the side outlet, wherein the air outlet baffle is not only connected to the left side wall and the right side guide wall of the side outlet, but also to the lower side wall of the side outlet, so that the outside wind can only enter the side outlet after passing through the air outlet baffle.

[0005] The outer shell is a circular ring-shaped component. In practical applications, the outer shell has various specific shapes, including at least the following structures or combinations: the first is that the outer shell is a straight barrel; the second is that the outer shell is a truncated inverted cone; the third is that the outer shell includes two sections, the upper section is a barrel and the lower section is a truncated inverted cone. However, no matter how its shape changes, the inner wall of the outer shell is smooth, so that the airflow can flow smoothly along the outer shell. In addition, the outer shell can at least partially or completely fall into the first separation body mentioned below.

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

[0007] The side port on the outer shell is an opening for external airflow to enter the cavity. The side port is arranged at the upper end of the outer shell, generally close to the upper end opening or connected to the upper end opening.

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

[0009] The tuyere baffle is a baffle structure arranged outside the side opening and capable of blocking the side opening in the horizontal direction. Part of the wall of the tuyere baffle is connected to the outer shell, and part of the wall outside the side opening is arranged at intervals from the outer shell, that is, a gap is formed between the wall of the tuyere baffle and the shell for airflow to pass through, so that the airflow bypassing the tuyere baffle can flow from the gap between the tuyere baffle and the shell to the side opening. In one specific embodiment, the tuyere 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 an arc shape, 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 behind the tuyere baffle from the right side of the main side plate to the outer shell, the basin bottom wall is connected to the lower side wall of the side opening from the basin side wall, and the right guide wall connects the basin bottom wall and the main side plate.

[0010] According to the above technical scheme, compared with the prior art, the beneficial technical effect of the present invention is that: in order to reduce the overall size of the vacuum cleaner, placing the cyclone separation body into the first separation body is a preferred scheme. In order to ensure the number of filter holes of the first separation body, it is inevitable that the lower half of the side port of the outer shell is exposed on the inner side of the filter hole, so that the wind will directly enter the shell cavity from the lower half of the side port after passing through the filter hole. This airflow flow pattern will directly affect the dust removal efficiency of the vacuum cleaner. The present invention can effectively block the external wind from directly entering the shell cavity from the lower half of the side port by arranging the air port baffle on the outer side of the side port. This requires the air inside and outside the filter to flow a longer distance, which is beneficial to improving the dust removal effect of the vacuum cleaner.

[0011] The present invention also proposes an air-dust separation component using the cyclone separator, comprising an upper cover plate, on which an exhaust pipe is arranged, the upper cover plate is detachably connected to the upper end opening of the cyclone separator, the exhaust pipe passes through the upper end opening and is inserted into the shell cavity, 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 port.

[0012] Furthermore, it also includes a dust bin and a first separation body, the dust bin includes a bin side wall and a bin bottom wall, the bin side wall and the bin bottom wall define a dust bin cavity, and an air inlet is also provided on the bin side wall; the first separation 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 separation body is arranged in the dust bin cavity, the upper end of the upper bucket body is connected to the bin side wall, and the lower end of the lower bucket body is abutted against the bin bottom wall, the first separation body divides the dust bin cavity into an outer separation cavity and an inner separation cavity, the upper cover plate and the cyclone separation body are arranged in the inner separation cavity, and an annular filter screen that allows airflow to pass through is provided on the upper bucket body, and the airflow entering from the air inlet can pass through the outer separation cavity and the annular filter screen in sequence and enter the inner separation cavity.

[0013] Among them, at least part of the outer shell of the cyclone separator is inserted into the upper bucket body, and from the horizontal direction, the lower half of the side port forms an overlapping area with the annular filter, and the air port baffle is arranged between the side port and the annular filter and can completely block the overlapping area. The advantage of this arrangement is that the area of ​​the annular filter can be increased as much as possible to ensure the amount of air passing through, and at the same time, through the blocking of the air port baffle, the air flow forms a detour route instead of directly rushing into the side port, which is conducive to improving the gas-dust separation efficiency.

[0014] Since the gas-dust separation component has the above advantages, it can be applied to a vacuum cleaner.

[0015] Since the present invention has the above characteristics and advantages, it can be applied to a cyclone separator and an air-dust separation component and a vacuum cleaner used therein. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the axial structure of a vacuum cleaner to which the technical solution of the present invention is applied; Figure 2 is a schematic diagram of the axial structure of the gas-dust separation assembly; Figure 3 is a schematic diagram of the explosion structure of the gas-dust separation component; Figure 4 is a schematic diagram of the cross-sectional structure of the gas-dust separation component; Figure 5 is a schematic diagram of the axial structure of the cyclone separator; Figure 6 is a schematic diagram of the structure of the cyclone separator in a front view; Figure 7 is a schematic diagram of the structure of the cyclone separator in a top view; Figure 8 yes Figure 7 Schematic diagram of the structure in the AA direction. DETAILED DESCRIPTION

[0017] The structure of the cyclone separator and the gas-dust separation assembly and vacuum cleaner using the technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0018] Except for those explicitly stated to be equivalent or alternative implementation schemes, the various implementation details disclosed below can be selectively applied or combined in one embodiment even if they are not directly related or synergistic in terms of functions.

[0019] like Figure 1 As shown, a vacuum cleaner comprises a main unit 11, a connecting pipe 12 and a dust picking unit 13, wherein the main unit 11 comprises a power device (not shown in the figure) and an air-dust separation component 2, the power device is used to generate suction power, the air-dust separation component 2 is connected to the power device for separating dust in the air, one end of the pipe cavity in the connecting pipe 12 is connected to the air-dust separation component 2, and the other end is connected to the dust picking unit 13, the dust picking unit 13 is used to pick up dust on the surface of the deposited object by using the suction power and can provide the picked up dust to the air-dust separation component 2 through the pipe cavity in the connecting pipe 12.

[0020] like Figure 2~Figure 4 The air-dust separation assembly 2 is shown, and the air-dust separation assembly 2 includes a dust barrel 3 and a first separation body 4. The dust barrel 3 includes a barrel side wall 31 and a barrel bottom wall 32. The barrel side wall 31 and the barrel bottom wall define a dust barrel cavity 30. The barrel side wall 31 is also provided with an air inlet 33. The air inlet 33 is connected to one end of the pipe cavity in the connecting pipe 12 for receiving the airflow with dust picked up by the dust pickup unit 13. The first separation body 4 is funnel-shaped and includes an upper bucket body 41 and a lower bucket body 42. The diameter of the lower bucket body 42 is smaller than the diameter of the upper bucket body 41. When the first separation body 4 is set in the dust barrel cavity 30, the upper end of the upper bucket body 41 is connected to the barrel side wall 31, and the lower end of the lower bucket body 42 is abutted against the barrel bottom wall 32. The first separation body 4 divides the dust barrel cavity 30 into an outer separation cavity 301 and an inner separation cavity 302. In this way, the air flow carrying dust enters the external separation chamber 301 from the air inlet 33, and the air flow rotates and flows in the external separation chamber 301 along the inner wall of the dust bin 3, thereby realizing the first-level separation of the dust, and the separated dust falls to the bottom of the dust bin chamber 30.

[0021] Furthermore, the gas-dust separation assembly 2 is also provided with a second-stage gas-dust separation structure, and the gas-dust separation assembly 2 includes a cyclone separation body 5 and an upper cover plate 6. Figure 5~Figure 8As shown, the cyclone separator 5 includes an outer shell 51 in a circular shape, and the outer shell 51 defines a shell cavity 50 for the cyclone. The upper and lower ends of the outer shell 51 are open, namely, an upper end opening 52 and a lower end opening 53. The outer shell 51 is also provided with a side opening 54 extending along the axial direction, and the air flow can enter the shell cavity 50 from the side opening 54. The upper cover plate 6 includes a cover plate body 61 and an exhaust pipe 62. The cover plate body 61 is in a disc shape. The exhaust pipe 62 is provided on the cover plate body 61, and the exhaust pipe 62 passes through the cover plate body 61. The upper cover plate 6 is detachably connected to the upper end opening 52 of the cyclone separator 5. The exhaust pipe 62 passes through the upper end opening 52 and is inserted into the shell cavity 50. An annular air duct is formed between the exhaust pipe 62 and the outer shell 51, and the lower end of the exhaust pipe 62 is lower than the side opening 54.

[0022] The upper cover plate 6 and the cyclone separator 5 are arranged in the inner separation chamber 302. In this embodiment, the cover plate body 61 of the upper cover plate 6 extends radially and can overlap the barrel side wall 31. The upper end of the upper bucket body 41 is connected to the bottom of the cover plate body 61 to achieve connection with the barrel side wall 31. Further, an annular filter screen 43 is arranged on the upper bucket body 41 to allow airflow to pass through, so that the airflow entering from the air inlet 33 can pass through the outer separation chamber 301 and the annular filter screen 43 in sequence and enter the inner separation chamber 302. The airflow entering the inner separation chamber 302 and then entering the shell chamber 50 from the side port 54 can flow in rotation along the annular air duct, thereby achieving the second-stage gas-dust separation.

[0023] In order to allow the airflow to better form a rotating flow in the housing cavity 50, the right side wall of the side port 54 extends outward along the tangential direction to form a right side guide wall 55, and the right side guide wall 55 is used to guide the outside wind to enter the housing cavity 50 from the outside of the outer shell 51 in the tangential direction. The right side guide wall 55 is a plate-shaped wall body connected to the outer shell 51, and the inner side wall surface of the right side guide wall 55 is smoothly tangentially transitionally connected to the inner side wall surface of the outer shell 51.

[0024] Further, at least part of the outer shell 51 of the cyclone separator 5 is inserted into the upper bucket body 41, and from a horizontal direction, the lower half of the side opening 54 forms an overlapping area with the annular filter screen 43. In order to reduce the airflow directly passing through the filter screen holes and then entering the shell cavity 50 through the side opening 54, the cyclone separator 5 also includes an air outlet baffle 56, which, from a horizontal direction, blocks the lower half of the side opening 54, wherein the air outlet baffle 56 is not only connected to the left side wall and the right side guide wall 55 of the side opening 54, but also connected to the lower side wall of the side opening 54, so that the outside wind can only enter the side opening 54 after passing over the air outlet baffle 56. The air outlet 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 such a setting is that the area of ​​the annular filter 43 can be increased as much as possible to ensure the amount of air passing through, and at the same time, the airflow is blocked by the air outlet baffle 56 to form a detour route instead of directly rushing into the side port 54, which requires the air inside and outside the filter to flow over a longer distance, which can not only effectively reduce the size of the air-dust separation component 2, but also help to improve the dust removal effect of the vacuum cleaner. In addition, by setting the air outlet baffle 56, the number of mesh holes of the annular filter 43 can also be guaranteed, which is conducive to increasing the airflow rate of the annular filter 43, thereby improving the dust removal efficiency.

[0025] The tuyere baffle 56 is a baffle structure arranged outside the side opening 54 and capable of blocking the side opening 54 in the horizontal direction. Part of the wall of the tuyere baffle 56 is connected to the outer shell 51, and part of the wall outside the side opening 54 is arranged at intervals from the outer shell 51, that is, a gap for airflow to pass is formed between part of the wall of the tuyere baffle 56 and the outer shell 51, so that the airflow bypassing the tuyere baffle 56 can flow from the gap between the tuyere baffle 56 and the shell to the side opening 54. In this embodiment, the tuyere baffle 56 also extends to the right direction after passing over the right guide wall 55, and is connected to the wall of the outer shell 51 located behind the tuyere baffle 56. The air outlet baffle 56 is in the shape of a half basin and includes a basin bottom wall 561 and a basin side wall 562. The basin side wall 562 includes an arc-shaped main side plate 563, 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 basin bottom wall 561 is connected to the lower side wall of the side opening 54 from the basin side wall 562, and the right guide wall 55 connects the basin bottom wall 561 and the main side plate 563.

[0026] Further, from a horizontal perspective, the height of the basin sidewall 562 occupies one fifth to two thirds of the axial height of the side opening 54. From an axial perspective, the radial spacing between the main side plate 563 and the outer shell 51 is not less than the width of the side opening 54.

[0027] Furthermore, a left guide wall 57 extends outward from the left side wall of the side opening 54, and the left guide wall 57 is parallel to the right guide wall 55. The protruding length of the left guide wall 57 is not greater than 20% of the protruding length of the right guide wall 55. The left guide wall 57, the right guide wall 55, and the basin bottom wall 561 cooperate to form a tangential air inlet channel of the shell cavity 50.

[0028] Furthermore, the left side plate 564 and the right side plate 565 located on the left and right sides of the basin side wall 562 are inclined, so that the air outlet baffle 56 has a large upper opening and a small lower bottom surface.

Claims

1. A cyclone separator, comprising an outer shell in a circular shape, wherein the outer shell defines a shell cavity for the cyclone, and the upper and lower ends of the outer shell are open; characterized in that: The outer shell is provided with a side opening extending in the axial direction, and the right side wall of the side opening extends outward in the tangential direction to form a right side guide wall, and the right side guide wall is used to guide the outside wind to enter the shell cavity from the outside of the outer shell in the tangential direction; it also includes an air outlet baffle, and when viewed from the horizontal direction, the air outlet baffle blocks the lower half of the side opening, wherein the air outlet baffle is not only connected to the left side wall and the right side guide wall of the side opening, but also to the lower side wall of the side opening, so that the outside wind can only enter the side opening after passing over the air outlet baffle.

2. The cyclone separator according to claim 1, characterized in that: The air outlet baffle also extends to the right side of the right guide wall after passing over the right guide wall, and is connected to the wall of the outer shell body located behind the air outlet baffle.

3. The cyclone separator according to claim 2, characterized in that: The air outlet 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 an arc-shaped main side plate, a left side plate connected to the left side wall of the side outlet from the left side of the main side plate, and a right side plate connected to the wall of the outer shell from the right side of the main side plate behind the air outlet baffle. The basin bottom wall is connected to the lower side wall of the side outlet from the basin side wall, and the right guide wall connects the basin bottom wall and the main side plate.

4. The cyclone separator according to claim 3, characterized in that: Viewed from the horizontal direction, the height of the basin side wall occupies one fifth to two thirds of the axial height of the side opening.

5. The cyclone separator according to claim 3, characterized in that: Viewed from the axial direction, the radial spacing between the main side plate and the outer shell is not less than the width of the side opening.

6. The cyclone separator according to claim 3, characterized in that: A left guide wall extends outward from the left side wall of the side opening, the left guide wall is parallel to the right guide wall, the protruding length of the left guide wall is not greater than 20% of the protruding length of the right guide wall, and the left guide wall, the right guide wall and the basin bottom wall cooperate to form a tangential air inlet channel of the shell cavity.

7. The cyclone separator according to claim 3, characterized in that: The left side plate and the right side plate located on the left and right sides of the basin side wall are inclined, so that the air outlet baffle has a large upper opening and a small lower bottom surface.

8. A gas-dust separation assembly using the cyclone separator according to any one of claims 1 to 7, characterized in that: It includes an upper cover plate, on which an exhaust pipe is arranged. The upper cover plate is detachably connected to the upper end opening of the cyclone separator. The exhaust pipe passes through the upper end opening and is inserted into the shell cavity. 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 port.

9. The gas-dust separation assembly according to claim 8, characterized in that: It also includes a dust bin and a first separation body, the dust bin includes a bin side wall and a bin bottom wall, the bin side wall and the bin bottom wall define a dust bin cavity, and an air inlet is also provided on the bin side wall; the first separation 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 separation body is arranged in the dust bin cavity, the upper end of the upper bucket body is connected to the bin side wall, and the lower end of the lower bucket body is abutted against the bin bottom wall, the first separation body divides the dust bin cavity into an outer separation cavity and an inner separation cavity, the upper cover plate and the cyclone separation body are arranged in the inner separation cavity, and an annular filter screen that allows airflow to pass through is arranged on the upper bucket body, and the airflow entering from the air inlet can pass through the outer separation cavity and the annular filter screen in turn and enter the inner separation cavity.

10. The gas-dust separation assembly according to claim 8, characterized in that: At least part of the outer shell of the cyclone separator is inserted into the upper bucket body, and from a horizontal direction, the lower half of the side port and the annular filter form an overlapping area, and the air port baffle is arranged between the side port and the annular filter and can completely block the overlapping area. (The upper end of the upper bucket body is connected to the bottom of the cover plate, and the outer periphery of the cover plate is connected to the side wall of the barrel).

11. A vacuum cleaner using the gas-dust separation assembly according to any one of claims 8 to 10, 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 air-dust separation component, the power device is used to generate suction power, the air-dust separation component 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-dust separation component, 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 component through the pipe cavity in the connecting pipe.

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