阅读说明：本技术 旋风分离结构及尘污分离装置 (Cyclone separation structure and dust and dirt separation device ) 是由 梁文龙 柳洲 王德旭 梁浩 饶长健 于 2020-12-31 设计创作，主要内容包括：本发明涉及清洁装置技术领域,具体涉及一种旋风分离结构及尘污分离装置,所述旋风分离结构包括基体、旋风分离组件和稳流结构,所述机体包括杯体,所述杯体具有杯腔及与所述杯腔连通的尘气进口和气流出口；旋风分离组件设于所述基体上并位于所述杯腔内,包括第一旋风分离器,所述第一旋风分离器包括多个进风口和多个出风口,所述进风口与所述尘气进口连通,所述出风口与所述气流出口连通；稳流结构设于所述基体上并位于所述杯腔内,位于所述尘气进口和所述进风口之间,适于将尘气导向各个所述进风口。通过实施本发明,将尘气导向各个所述进风口,抑制进风口处交叉流,减少进气波动,提高进风的稳定性。(The invention relates to the technical field of cleaning devices, in particular to a cyclone separation structure and a dust and dirt separation device, wherein the cyclone separation structure comprises a base body, a cyclone separation assembly and a flow stabilizing structure, the base body comprises a cup body, and the cup body is provided with a cup cavity, a dust and air inlet and an air outlet which are communicated with the cup cavity; the cyclone separation component is arranged on the base body, is positioned in the cup cavity and comprises a first cyclone separator, the first cyclone separator comprises a plurality of air inlets and a plurality of air outlets, the air inlets are communicated with the dust air inlets, and the air outlets are communicated with the airflow outlets; the flow stabilizing structure is arranged on the base body, is positioned in the cup cavity, is positioned between the dust gas inlet and the air inlets and is suitable for guiding the dust gas to each air inlet. By implementing the invention, dust and air are guided to each air inlet, cross flow at the air inlet is inhibited, air inlet fluctuation is reduced, and air inlet stability is improved.)

1. A cyclonic separating structure, comprising:

the base body comprises a cup body (1), wherein the cup body (1) is provided with a cup cavity (11), and a dust air inlet (12) and an air outlet (13) which are communicated with the cup cavity (11);

the cyclone separation component is arranged on the base body, is positioned in the cup cavity (11), and comprises a first cyclone separator (2), wherein the first cyclone separator (2) comprises a plurality of air inlets and a plurality of air outlets (24), the air inlets are communicated with the dust air inlet (12), and the air outlets (24) are communicated with the airflow outlet (13);

and the flow stabilizing structure (3) is arranged on the base body, is positioned in the cup cavity (11), is positioned between the dust and air inlet (12) and is suitable for guiding dust and air to each air inlet.

2. The cyclone separation structure according to claim 1, wherein the first cyclone (2) comprises an outer separation unit and an inner separation unit, the outer separation unit and the inner separation unit respectively comprise a plurality of cyclone tubes, and the plurality of cyclone tubes of the outer separation unit are arranged in a ring shape and surround the plurality of cyclone tubes of the inner separation unit; any cyclone tube comprises at least one said inlet and at least one said outlet (24).

3. The cyclone separating structure of claim 2, wherein the cyclone separating tube of the outer separating unit is an outer separating tube (21), and the air inlet of the outer separating tube (21) is an outer air inlet (211); the cyclone separation pipe of the inner separation unit is an inner separation pipe (22), and an air inlet of the inner separation pipe (22) is an inner air inlet (221);

the flow stabilizing structure (3) comprises a plurality of shunting structures (31), a shunting area is formed between every two adjacent shunting structures (31), and each inner air inlet (221) corresponds to one of the shunting areas.

4. Cyclonic separating structure as claimed in claim 3, wherein the number of outer separating tubes (21) corresponds to the number of the diverging zones and is provided in the diverging zones in a one-to-one correspondence.

5. Cyclonic separating structure as claimed in claim 4, wherein the flow dividing structure (31) comprises a first flow dividing portion (311) and a second flow dividing portion (312);

the first shunting parts (311) of the plurality of shunting structures (31) are radially distributed on the substrate, any first shunting part (311) extends from the inside of the cup cavity (11) to the wall of the cup cavity (11), and a shunting area is formed between the first shunting parts (311) of two adjacent shunting structures (31);

one end of the first shunting part (311) facing the cavity wall of the cup cavity (11) is a connecting end, the second shunting part (312) is arranged on the connecting end and comprises a first forming part extending from the connecting end to the shunting region on one side of the first shunting part (311) and a second forming part extending from the connecting end to the shunting region on the other side of the first shunting part (311), and an opening communicated with the corresponding shunting region is formed between the first forming part of any shunting structure (31) and the second forming part of the adjacent shunting structure (31);

each of the outer air inlets (211) corresponds to one of the second flow dividing portions (312).

6. Cyclonic separating structure as claimed in claim 5, wherein the flow dividing structure (31) further comprises an annular connecting portion (32), and an end of the first flow dividing portion (311) remote from the wall of the cup chamber (11) is connected to the annular connecting portion (32).

7. Cyclonic separating structure as claimed in claim 6, wherein the inner separating tube (22) is located within the annular connecting portion (32).

8. The cyclone separating structure according to claim 6, wherein the first flow dividing portion (311) is a plate-like structure, and is uniformly distributed along a circumferential direction of the annular connecting portion (32).

9. The cyclone separating structure according to claim 8, wherein the second flow dividing part (312) has a plate-like structure and is perpendicular to the first flow dividing part (311).

10. The cyclone separation structure according to claim 7, wherein the air outlet (24) is arranged at one end of the cyclone separation tube, the air inlet is arranged at the side part of the cyclone separation tube close to the air outlet (24), the end of the cyclone separation tube far away from the air outlet (24) is provided with a dust collecting opening (23), the diameter of the cyclone separation tube is gradually reduced from the air inlet to the dust collecting opening (23) along the axial direction of the cyclone separation tube, and the flow stabilizing structure (3) is arranged close to the dust collecting opening (23).

11. The cyclone separation structure of claim 10, wherein the base body further comprises an ash falling cylinder (4), the ash falling cylinder (4) is arranged below the first cyclone separation structure, one end of the cyclone separation pipe, which is provided with the dust collecting opening (23), is connected with the top of the ash falling cylinder (4), and the dust collecting opening (23) is communicated with the ash falling cylinder (4);

the flow stabilizing structure (3) further comprises a supporting part (33), and the flow stabilizing structure (3) is connected to the top of the ash falling cylinder (4) through the supporting part (33).

12. Cyclone separating structure according to claim 11, wherein the support part (33) is connected with the annular connecting part (32) at one end and with the ash chute (4) at the other end.

13. Cyclonic separating structure as claimed in claim 12, wherein the supports (33) have a height L1, the L1 satisfying 5mm ≦ L1 ≦ 10 mm.

14. The cyclone separation structure of claim 10, wherein the cyclone tube has an air inlet channel therein and a cyclone channel extending in an axial direction of the cyclone tube, the air inlet channel extends in a tangential direction of the cyclone channel of the cyclone tube, one end of the air inlet channel is communicated with the cyclone channel, and the other end of the air inlet channel forms the air inlet.

15. The cyclone separating structure of claim 14, wherein the inner separating tubes (22) of the inner separating unit are arranged in a ring shape, the diameter of the circle at the center of the inner air inlets (221) of the inner separating unit is D1, the inner diameter of the ring-shaped connecting part (32) is L2, and L2 ≦ D1.

16. The cyclone separating structure according to claim 11 or 12, wherein the cyclone separating assembly further comprises a second cyclone separator (5) communicating with the first cyclone separator (2), the second cyclone separator (5) being provided on the base body and located in the cup chamber (11) and upstream of the first cyclone separator (2) in the flow direction of the gas flow, the first cyclone separator (2) communicating with the dust gas inlet (12) through the second cyclone separator (5);

the ash falling barrel (4) is at least partially arranged in the second cyclone separator (5) and defines a communicating air duct (51) with the second cyclone separator (5), and the air inlet is communicated with the dust air inlet (12) through the communicating air duct (51).

17. The cyclone separating structure of claim 13, wherein the distance between the second flow dividing part (312) and the center of the flow stabilizing structure (3) is L3, the maximum diameter of the ash falling cylinder (4) is D2, the inner diameter of the cup cavity (11) is D3, and D2 & lt L3 & lt 0.9D 3.

18. A dirt-and-dust separating apparatus comprising a cyclonic separating structure as claimed in any one of claims 1 to 17.

19. The dirt separation device of claim 18, wherein the dirt separation device is a vacuum cleaner.

Technical Field

The invention relates to the technical field of cleaning devices, in particular to a cyclone separation structure and a dust and dirt separation device.

Background

At present, some dust collectors realize gas-solid separation through cyclone separators, but when the cyclone separators process a large amount of air, a single cyclone separator with a large diameter is often difficult to ensure the separation efficiency, and a plurality of cyclone separators with small diameters need to be connected in parallel to obtain higher separation efficiency. However, the air inlets of the cyclone separators are different in position, and the distances from the air inlets to the dust and air inlets are different, so that cross airflow is easily caused, the flow distribution of the cyclone separators is uneven, and the separation efficiency of the whole machine is further influenced.

Disclosure of Invention

Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art that cross air flow is easily caused and the flow distribution of each cyclone is not uniform, so as to provide a cyclone separation structure and a dust and dirt separation apparatus for guiding dust and air to each air inlet and inhibiting cross air flow.

The present invention provides a cyclone separating structure, comprising:

the base body comprises a cup body, wherein the cup body is provided with a cup cavity, and a dust and air inlet and an air outlet which are communicated with the cup cavity;

the cyclone separation component is arranged on the base body, is positioned in the cup cavity and comprises a first cyclone separator, the first cyclone separator comprises a plurality of air inlets and a plurality of air outlets, the air inlets are communicated with the dust air inlets, and the air outlets are communicated with the airflow outlets;

and the flow stabilizing structure is arranged on the base body, is positioned in the cup cavity, is positioned between the dust gas inlet and the air inlet and is suitable for guiding the dust gas to each air inlet.

Optionally, the first cyclone separator comprises an outer separation unit and an inner separation unit, the outer separation unit and the inner separation unit respectively comprise a plurality of cyclone separation tubes, and the plurality of cyclone separation tubes of the outer separation unit are arranged in a ring shape and surround the plurality of cyclone separation tubes of the inner separation unit; any cyclone tube comprises at least one air inlet and at least one air outlet.

Optionally, the cyclone separation pipe of the outer separation unit is an outer separation pipe, and the air inlet of the outer separation pipe is an outer air inlet; the cyclone separation pipe of the inner separation unit is an inner separation pipe, and an air inlet of the inner separation pipe is an inner air inlet;

the flow stabilizing structure comprises a plurality of shunting structures, two adjacent shunting structures form shunting areas between the shunting structures, and each internal air inlet corresponds to one shunting area.

Optionally, the number of the outer separation tubes is the same as that of the diversion areas, and the outer separation tubes are arranged in the diversion areas in a one-to-one correspondence manner.

Optionally, the flow dividing structure comprises a first flow dividing portion and a second flow dividing portion;

the first shunting parts of the plurality of shunting structures are radially distributed on the substrate, any first shunting part extends from the inside of the cup cavity to the wall of the cup cavity, and a shunting area is formed between the first shunting parts of two adjacent shunting structures;

the first shunting part is provided with a connecting end at one end facing the cavity wall of the cup cavity, the second shunting part is arranged on the connecting end and comprises a first forming part extending from the connecting end to the shunting area at one side of the first shunting part and a second forming part extending from the connecting end to the shunting area at the other side of the first shunting part, and an opening communicated with the corresponding shunting area is formed between the first forming part of any shunting structure and the second forming part of the adjacent shunting structure;

each of the outer air inlets corresponds to one of the second flow dividing portions.

Optionally, the flow dividing structure further includes an annular connecting portion, and one end of the first flow dividing portion, which is away from the cavity wall of the cup cavity, is connected to the annular connecting portion.

Optionally, the inner separator tube is located within the annular connection.

Optionally, the first flow dividing part is of a plate-shaped structure and is uniformly distributed along the circumferential direction of the annular connecting part.

Optionally, the second flow dividing part is of a plate-shaped structure and perpendicular to the first flow dividing part.

Optionally, the air outlet is disposed at one end of the cyclone separation tube, the air inlet is disposed at a side portion of the cyclone separation tube close to the air outlet, a dust collection port is disposed at one end of the cyclone separation tube far from the air outlet, a diameter of the cyclone separation tube is gradually reduced from the air inlet to the dust collection port along an axial direction of the cyclone separation tube, and the flow stabilizing structure is disposed close to the dust collection port.

Optionally, the base body further comprises an ash falling cylinder, the ash falling cylinder is arranged below the first cyclone separation structure, one end of the cyclone separation pipe, which is provided with the dust collection port, is connected with the top of the ash falling cylinder, and the dust collection port is communicated with the ash falling cylinder;

the flow stabilizing structure further comprises a supporting part, and the flow stabilizing structure is connected to the top of the ash falling cylinder through the supporting part.

Optionally, one end of the support part is connected with the annular connecting part, and the other end of the support part is connected with the ash falling cylinder.

Optionally, the height of the supporting part is L1, and L1 satisfies that L1 is less than or equal to 5mm and less than or equal to 10 mm.

Optionally, an air inlet channel and a cyclone channel axially extending along the cyclone separating tube are arranged in the cyclone separating tube, the air inlet channel extends along the tangential direction of the cyclone channel of the cyclone separating tube, one end of the air inlet channel is communicated with the cyclone channel, and the other end of the air inlet channel forms the air inlet.

Optionally, the inner separation pipes of the inner separation unit are arranged in a ring shape, the diameter of a circle at the centers of the inner air inlets of the inner separation unit is D1, the inner diameter of the ring-shaped connection part is L2, and L2 is not more than D1.

Optionally, the cyclone separation assembly further comprises a second cyclone separator communicated with the first cyclone separator, the second cyclone separator is arranged on the base body and positioned in the cup cavity and positioned upstream of the first cyclone separator in the airflow flowing direction, and the first cyclone separator is communicated with the dust gas inlet through the second cyclone separator;

the dust falling cylinder is at least partially arranged in the second cyclone separator, a communicating air channel is limited by the dust falling cylinder and the second cyclone separator, and the air inlet is communicated with the dust air inlet through the communicating air channel.

Optionally, the distance between the second flow dividing part and the center of the flow stabilizing structure is L3, the maximum diameter of the ash falling cylinder is D2, the inner diameter of the cup cavity is D3, and L3 is more than or equal to D2 and less than or equal to 0.9D 3.

The invention also provides a dust and dirt separating device which comprises the cyclone separating structure.

Optionally, the dirt-and-dust separating apparatus is a vacuum cleaner.

The technical scheme of the invention has the following advantages:

1. the cyclone separation structure provided by the invention has a steady flow structure, dust gas is guided to each air inlet, the direction of the air flow is corrected, cross flow at the air inlet is inhibited, air inlet fluctuation is reduced, and air inlet stability is improved.

2. The cyclone separation structure provided by the invention comprises the outer separation unit and the inner separation unit, and the separation efficiency is high.

3. According to the cyclone separation structure provided by the invention, the flow stabilizing structure comprises a plurality of flow dividing structures, and the flow direction of airflow flowing towards the inner air inlet is corrected through the flow dividing structures, so that cross flow at the inner air inlet is inhibited, air inlet fluctuation is reduced, air inlet stability is improved, and the separation efficiency of the whole machine is improved.

4. According to the cyclone separation structure provided by the invention, the number of the outer separation tubes is consistent with that of the shunting areas, the outer separation tubes are arranged in the shunting areas in a one-to-one correspondence manner, and airflow entering the outer separation tubes is shunted and guided through the shunting areas.

5. The cyclone separation structure provided by the invention comprises a first flow dividing part and a second flow dividing part, wherein the first flow dividing part divides lateral airflow and guides the airflow entering a flow dividing area through an opening to an inner air inlet; the second flow dividing part divides the upward air flow and guides the upward air flow to the corresponding outer air inlet.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a cross-sectional view of a cyclonic separation structure of the present invention;

FIG. 2 is an exploded view of the installation of the cyclonic separation structure of the present invention;

FIG. 3 is a first schematic view of a cyclonic separation structure according to the present invention;

FIG. 4 is a second schematic illustration of a cyclonic separation structure according to the present invention;

FIG. 5 is a schematic illustration three of a (partial) cyclonic separation structure of the present invention;

FIG. 6 is a (partial) fourth schematic view of a cyclonic separation structure of the present invention;

FIG. 7 is a first schematic view of a flow stabilizing structure according to the present invention;

FIG. 8 is a second schematic view of a flow stabilizing structure of the present invention;

FIG. 9 is a third schematic view of a flow stabilizing structure of the present invention;

fig. 10 is a bottom view of the first cyclone separator of the present invention.

Description of reference numerals:

1-cup body; 11-a cup cavity; 12-dust gas inlet; 13-a gas stream outlet; 2-a first cyclone separator; 21-outer separation tube; 211-external air intake; 22-inner separation tube; 221-inner air inlet; 23-a dust collecting port; 24-an air outlet; 3-a flow stabilizing structure; 31-a flow splitting arrangement; 311-a first split part; 312-a second split; 32-an annular connection; 33-a support portion; 4-ash falling cylinder; 5-a second cyclone separator; 51-a communicating air duct; 52-circulation duct; 6-a separator; 7-a filter screen.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 10, the present embodiment provides a cyclone separation structure for gas-solid separation, including a base body, a cyclone separation assembly and a flow stabilizing structure 3, where the base body includes a cup body 1, the cup body 1 has a cup cavity 11, and a dust gas inlet 12 and a gas outlet 13 communicated with the cup cavity 11, the dust gas inlet 12 is used for allowing a dust-containing gas to enter, and the gas outlet 13 is used for discharging a clean and dust-free gas; the cyclone separation component is arranged on the base body and positioned in the cup cavity 11, and comprises a first cyclone separator 2, the first cyclone separator 2 comprises a plurality of air inlets and a plurality of air outlets 24, the air inlets are communicated with the dust air inlet 12, and the air outlets 24 are communicated with the air flow outlet 13; the flow stabilizing structure 3 is arranged on the base body, is positioned in the cup cavity 11, is positioned between the dust and air inlet 12 and is suitable for guiding dust and air to each air inlet.

The cyclone separation structure is provided with a flow stabilizing structure 3, dust and gas are guided to the air inlets, the direction of airflow is corrected, cross flow at the air inlets is inhibited, air inlet fluctuation is reduced, and air inlet stability is improved.

In this embodiment, the first cyclone separator 2 includes an outer separation unit and an inner separation unit, the outer separation unit and the inner separation unit respectively include a plurality of cyclone separation tubes, and the plurality of cyclone separation tubes of the outer separation unit are arranged in a ring shape and surround the plurality of cyclone separation tubes of the inner separation unit; any cyclone tube includes at least one of the inlet vents and at least one of the outlet vents 24. The gas-solid separation is realized through a plurality of cyclone separation pipes, and the separation efficiency is high. And the plurality of cyclone separating tubes belong to small separating tubes, the smaller the size of the cyclone separating tube is, the smaller the segmentation particle size is, the higher the separation efficiency is, and the plurality of small cyclone separating tubes can achieve higher separation efficiency.

As an alternative embodiment, the cyclone separator may also comprise a plurality of cyclone tubes, each of which has at least two differently positioned air inlets.

In this embodiment, the cyclone separation tube of the outer separation unit is an outer separation tube 21, and the air inlet of the outer separation tube 21 is an outer air inlet 211; the cyclone separation pipe of the inner separation unit is an inner separation pipe 22, and the air inlet of the inner separation pipe 22 is an inner air inlet 221.

The flow stabilizing structure 3 comprises a plurality of flow dividing structures 31, a flow dividing region is formed between every two adjacent flow dividing structures 31, and each of the inner air inlets 221 corresponds to one of the flow dividing regions. By the flow dividing structure 31, the direction of the air flow flowing to the inner air inlet 221 is corrected, cross flow at the inner air inlet 221 is inhibited, air inlet fluctuation is reduced, air inlet stability is improved, and separation efficiency of the whole machine is improved.

In this embodiment, the number of the outer separation tubes 21 is the same as the number of the diversion areas, and the outer separation tubes are arranged in the diversion areas in a one-to-one correspondence manner, so that the air flow entering the outer separation tubes 21 is diverted and guided by the diversion areas.

In this embodiment, the flow dividing structure 31 includes a first flow dividing portion 311 and a second flow dividing portion 312;

the first shunting parts 311 of the plurality of shunting structures 31 are radially distributed on the substrate, and any first shunting part 311 extends from the inside of the cup cavity 11 toward the cavity wall of the cup cavity 11, and a shunting area is formed between the first shunting parts 311 of two adjacent shunting structures 31. The first shunting portion 311 is a connecting end at an end facing the cavity wall of the cup cavity 11, the second shunting portion 312 is disposed on the connecting end, and includes a first component extending from the connecting end to the shunting region on one side of the first shunting portion 311, and a second component extending from the connecting end to the shunting region on the other side of the first shunting portion 311, and an opening communicating with the corresponding shunting region is formed between the first component of any one of the shunting structures 31 and the second component of the adjacent shunting structure 31. Each of the external air inlets 211 corresponds to one of the second diverging portions 312.

The first shunting part 311 shunts the side airflow, and guides the airflow entering the shunting area through the opening to the inner air inlet 221; the second flow dividing portion 312 divides the upward flow and guides the upward flow to the corresponding outer air inlet 211.

In this embodiment, the flow dividing structure 31 further includes an annular connecting portion 32, and one end of the first flow dividing portion 311, which is far away from the cavity wall of the cup cavity 11, is connected to the annular connecting portion 32. The annular connecting portion 32 connects the flow dividing structures 31 into a whole, and the annular connecting portion 32 restricts the flow of gas at the end of the first flow dividing portion 311 away from the wall of the cup cavity 11, so as to prevent the cross flow between the flow dividing regions.

In this embodiment, the inner separator tube 22 is positioned within the annular connector 32. The end of the diverging region is defined by the annular connection 32, which better draws air into the inward air inlet 221.

In this embodiment, the first flow dividing portions 311 are plate-shaped structures and are uniformly distributed along the circumferential direction of the annular connecting portion 32. Simple structure and easy molding. The air flow is evenly distributed to each air inlet, cross air flow is restrained, and the phenomenon of channeling back mixing is improved.

In this embodiment, the second flow dividing part 312 has a plate-shaped structure and is perpendicular to the first flow dividing part 311. Simple structure and easy molding.

In this embodiment, the air outlet 24 is disposed at one end of the cyclone separating tube, the air inlet is disposed at a side portion of the cyclone separating tube close to the air outlet 24, a dust collecting opening 23 is disposed at one end of the cyclone separating tube far from the air outlet 24, a diameter of the cyclone separating tube gradually decreases from the air inlet to the dust collecting opening 23 along an axial direction of the cyclone separating tube, and the flow stabilizing structure 3 is disposed close to the dust collecting opening 23. The dust collection port 23 is used to collect dust and discharge the dust out of the cyclone tube through the dust collection port 23. The top of the cyclone separation pipe is provided with an air outlet pipe, and the air outlet 24 is arranged at one end, far away from the top of the cyclone separation pipe, of the air outlet pipe.

In this embodiment, the base further includes a dust falling cylinder 4, the dust falling cylinder 4 is disposed below the first cyclone separation structure, one end of the cyclone separation tube, which is provided with the dust collection port 23, is connected to the top of the dust falling cylinder 4, the dust collection port 23 is communicated with the dust falling cylinder 4, the dust falling cylinder 4 is used for collecting dust, the top of the dust falling cylinder 4 is provided with a plurality of openings, the cyclone separation tube is connected to the top of the dust falling cylinder 4, and each opening corresponds to one dust collection port 23; the flow stabilizing structure 3 further comprises a supporting part 33, and the flow stabilizing structure 3 is connected to the top of the ash falling cylinder 4 through the supporting part 33.

The cyclone separation structure further comprises a partition plate 6, the partition plate 6 is arranged at the top of the first cyclone separator 2 and connected with the cavity wall of the cup cavity 11, the cup cavity 11 is divided into an air inlet cavity and an air outlet cavity, a plurality of through holes are formed in the partition plate 6, the first cyclone separator 2 is arranged in the air inlet cavity, and an air outlet 24 of the cyclone separation pipe is communicated with the air inlet cavity through the through holes. Because the same ash falling barrel 4 and the same exhaust cavity are used for the plurality of cyclone separating pipes, when the air inlet flow parts of the cyclone separating pipes are uniform, the channeling back mixing is easily generated in the ash falling barrel 4, and the integral separation performance of the cyclone separating structure is influenced. The cyclone separation structure further comprises a filter screen 7 which is arranged in the exhaust cavity and is positioned between the through hole and the airflow outlet 13.

In the embodiment, the flow stabilizing structure 3 is arranged in the air inlet cavity and is positioned between the ash falling cylinder 4 and the air inlets, dust and air are guided to the air inlets, so that air flow is uniformly distributed to each air inlet, the direction of the air flow is corrected, cross flow at the air inlets is inhibited, air inlet fluctuation is reduced, the stability of the air inlet is improved, the channeling back mixing phenomenon is improved, and good separation efficiency is obtained. The supporting part 33 is arranged to fix the flow stabilizing structure 3 on the top of the ash falling cylinder 4, and appropriately pull the distance between the flow stabilizing structure 3 and the dust and air inlet 12 open, so as to better perform air inlet shunting, and prevent the air flow shunted into the inner air inlet 221 from being far less than the air flow shunted into the outer air inlet 211.

The dust gas inlet 12 is arranged on the cavity wall of the gas inlet cavity, and the gas inlet direction is tangential to the cavity wall of the gas inlet cavity. The top of the ash falling cylinder 4 divides the air inlet cavity into a first air inlet cavity and a second air inlet cavity, the cyclone separation component is arranged in the first air inlet cavity, the ash falling cylinder 4 is arranged in the second air inlet cavity, and the dust air inlet 12 is arranged in the second air inlet cavity.

In this embodiment, one end of the support portion 33 is connected to the annular connecting portion 32, and the other end is connected to the dust-dropping cylinder 4.

In the embodiment, the height of the supporting part 33 is L1, and L1 satisfies that L1 is not less than 5mm and not more than 10 mm. The dust and air enter the first air inlet cavity through a gap between the top of the dust falling cylinder 4 and the cavity wall of the cup cavity 11, and then flow is guided through the flow stabilizing structure 3. The height of the supporting portion 33 cannot be too large, which easily causes the second shunting portion 312 not to guide the air to the external air inlet 211 in time, and also cannot be too small, so that the shunting range and the shunting efficiency of the shunting area are affected by too small height. In the embodiment, L1 is larger than or equal to 5mm and smaller than or equal to 10mm, the area of the shunting area is increased, dust and gas are guided to enter the shunting area through the opening, the shunting effect is enhanced, cross flow on the lower side of the structure 3 is always stabilized, and the stability of the airflow is improved. In a specific embodiment, the height L1 of the support portion 33 is 5 mm; in another specific embodiment, the height L1 of the supporting portion 33 is 10 mm.

In this embodiment, the cyclone separation tube is internally provided with an air inlet channel and a cyclone channel extending along the axial direction of the cyclone separation tube, the air inlet channel extends along the tangential direction of the cyclone channel of the cyclone separation tube, one end of the air inlet channel is communicated with the cyclone channel, and the other end of the air inlet channel forms the air inlet.

In this embodiment, the inner separation pipes 22 of the inner separation unit are arranged in a ring shape, the diameter of the circle at the center of the inner air inlets 221 of the inner separation unit is D1, the inner diameter of the ring-shaped connection portion 32 is L2, and L2 is not less than D1. The shunting area of the shunting area is increased, and the shunting effect is enhanced.

In this embodiment, the cyclone separation assembly further comprises a second cyclone separator 5 communicated with the first cyclone separator 2, the second cyclone separator 5 is arranged on the base body and positioned in the cup cavity 11 and positioned upstream of the first cyclone separator 2 in the airflow flowing direction, and the first cyclone separator 2 is communicated with the dust and air inlet 12 through the second cyclone separator 5; a circulating air duct 52 communicated with the dust and air inlet 12 is defined between the second cyclone separator 5 and the wall of the cup cavity 11.

The ash falling cylinder 4 is at least partially arranged in the second cyclone separator 5 and defines a communicating air duct 51 with the second cyclone separator 5, and the air inlet is communicated with the dust air inlet 12 through the communicating air duct 51. The second cyclone separator 5 is provided with a plurality of circulation ports, and the circulation air duct 52 is communicated with the communication air duct 51 through the circulation ports. The communicating air duct 51 is communicated with an air inlet of the first cyclone separator 2. The ash falling cylinder 4 is funnel-shaped and comprises a first cylinder part in a circular truncated cone shape and a second cylinder part in a cylindrical shape.

In this embodiment, the distance between the second flow dividing part 312 and the center of the flow stabilizing structure 3 is L3, the maximum diameter of the ash falling cylinder 4 is D2, the inner diameter of the cup cavity 11 is D3, and L3 is not less than D2 and not more than 0.9D 3. The upward flow guiding efficiency of the second flow dividing part 312 is enhanced, airflow is guided to enter the outer air inlet 211, the stability of the airflow below the outer air inlet 211 is improved, the flow distribution among the cyclone separation pipes is more balanced, the channeling back mixing phenomenon is improved, and the separation efficiency is improved.

In this embodiment, a dust and dirt separating device is further provided, and includes the cyclone separation structure.

In this embodiment, the dust and dirt separating device is a dust collector.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.