Vacuum cleaner having two stages of spiral separation structures

Abstract

A vacuum cleaner having two stages of spiral separation structures is provided. The vacuum cleaner having two stages of spiral separation structures includes a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly. The first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between a dust collection inlet and a filtering structure of the vacuum cleaner along a gas flow direction. A first spiral channel uses the principle of centrifugal force to separate relatively large and heavy particles in airflow for the first time, and the separated particles fall into the first dust collection assembly to complete the first particle separation and collection.

Description

CROSS REFERENCE TO A RELATED APPLICATION

[0001] This application claims the benefit of and takes priority from Chinese Patent Application Serial No. 202510357529.7 filed on Mar. 25, 2025, the contents of which are herein incorporated by reference.TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vacuum cleaners, in particular to a vacuum cleaner having two stages of spiral separation structures.BACKGROUND

[0003] The working principle of the traditional vacuum cleaner is to rely on suction generated by the motor to suck dust and garbage into the dust bucket of the vacuum cleaner, and a filtering structure is arranged at the front end of the motor for preliminary filtration. However, this simple filtration mechanism cannot effectively prevent small particles such as dust, and the small particles are easily accumulated on the filtering structure, eventually leading to blockage. Therefore, the user needs to replace or clean the filtering structure frequently, so that additional usage costs and maintenance work are increased. Moreover, if the filter is not replaced or cleaned in time, the blocked filter will seriously affect the suction effect of the motor, resulting in increased motor load and excessive heat generation, which may cause motor damage. In addition, the blocked filtering structure may reduce the energy efficiency of the vacuum cleaner, so that the vacuum cleaner is more power-consuming in the using process.

[0004] And then, the patent with the application number of CN201810974260.7 discloses a cyclone spiral separator and a vacuum cleaner. A group of cyclone spiral separators is added between an air inlet of the vacuum cleaner and a motor. Although the filtration efficiency of the vacuum cleaner is improved to a certain extent, the blockage problem of the filter is reduced. However, there are still the following technical problems: only a single group of cyclone spiral separators is used to separate particles from airflow, and the separation path is relatively short, resulting in limited separation opportunities of the particles in the airflow. Part of fine particles cannot be effectively separated, and the separation efficiency is low. Furthermore, since the cyclone spiral separator is fixedly arranged at a tail end of a hand-held tube, the overall volume of the hand-held tube is increased, and more space is required. Moreover, it is difficult for the user to easily hold the hand-held tube, and the operation becomes more difficult.

[0005] For this purpose, the present disclosure is proposed.SUMMARY

[0006] In order to solve the above technical problem, the present disclosure aims to provide a vacuum cleaner having two stages of spiral separation structures. Various technical effects generated by a preferred technical scheme in various technical schemes provided by the present disclosure are explained in detail as follow.

[0007] In order to achieve the above-mentioned purpose, the present disclosure provides the following technical scheme.

[0008] The present disclosure provides a vacuum cleaner having two stages of spiral separation structures, comprising a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly, wherein the first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between a dust collection inlet and a filtering structure of the vacuum cleaner along a gas flow direction;

[0009] wherein the first-stage spiral separator comprises a first spiral channel for driving airflow entering from the dust collection inlet to separate particles for the first time; wherein the first dust collection assembly communicates with an outlet end of the first spiral channel for collecting particles generated by separation for the first time;

[0010] wherein the second-stage spiral separator comprises a second spiral channel for driving the airflow after separation for the first time to separate particles for the second time; and wherein the second dust collection assembly hermetically communicates with an outlet end of the second spiral channel for collecting particles generated by separation for the second time.

[0011] Preferably, the first-stage spiral separator further comprises a first separation channel, the first separation channel being located on a spiral axis of the first spiral channel for communicating the first spiral channel and the second-stage spiral separator.

[0012] Preferably, an outer edge of the first spiral channel is provided with a first dust hopper for communicating the first spiral channel and the first dust collection assembly.

[0013] Preferably, the second-stage spiral separator further comprises a second separation channel, the second separation channel being located on a spiral axis of the second spiral channel for communicating the second spiral channel and the filtering structure.

[0014] Preferably, an outer edge of the second spiral channel is provided with a second dust hopper for hermetically communicating the first spiral channel and the second dust collection assembly.

[0015] Preferably, the first separation channel hermetically communicates with the second air inlet channel through a communicating pipeline.

[0016] Preferably, a guide part having a gradually decreasing inner diameter is arranged above an inlet end of the second dust collection assembly.

[0017] Preferably, further comprising a first installation part, a second installation part and a vacuum cleaner body hermetically connected sequentially from top to bottom,

[0018] wherein the first installation part is used for installing the filtering structure and the motor;

[0019] wherein the second installation part is used for installing the first-stage spiral separator and the second-stage spiral separator and provided with a dust suction inlet; and

[0020] the vacuum cleaner body is used for installing the first dust collection assembly and the second dust collection assembly.

[0021] Preferably, wherein the first installation part, the second installation part and the vacuum cleaner body are detachably connected through buckle assemblies.

[0022] The preferred technical scheme of the present disclosure at least may generate the following technical effects.

[0023] The present disclosure provides a vacuum cleaner having two stages of spiral separation structures, including a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly. The first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between a dust collection inlet and a filtering structure of the vacuum cleaner along a gas flow direction. The first-stage spiral separator includes a first spiral channel for driving airflow entering from the dust collection inlet to separate particles for the first time. The first dust collection assembly communicates with an outlet end of the first spiral channel for collecting particles generated by separation for the first time. The second-stage spiral separator includes a second spiral channel for driving the airflow after separation for the first time to separate particles for the second time. The second dust collection assembly hermetically communicates with an outlet end of the second spiral channel for collecting particles generated by separation for the second time. Dust and garbage are sucked from the dust collection inlet through suction generated by a motor, and sequentially passes through the first-stage spiral separator and the second-stage spiral separator for two-stage separation. The airflow after two-stage separation is sequentially discharged from the vacuum cleaner through the filtering structure and the motor.

[0024] Specifically, when the airflow entering from the dust collection inlet flows into the first-stage spiral separator and passes through the first spiral channel, the airflow is subjected to the action of centrifugal force, so that relatively large and heavy particles are separated under the action of centrifugal force, move downward along the wall surface of the first spiral channel, and fall into the first dust collection assembly to complete particle separation and collection for the first time.

[0025] The airflow after preliminary separation continues to flow into the second-stage spiral separator. When passing through the second spiral channel, the airflow is also subjected to the action of centrifugal force. Finer particles are also effectively separated, move downward along the wall surface of the second spiral channel, and fall into the second dust collection assembly to complete particle separation and collection for the second time. Subsequently, the airflow after two-stage separation reaches the filtering structure. After two-stage separation of the airflow, the amount of particles reaching the filtering structure is greatly reduced, and the service lives of the filtering structure and the motor are prolonged. In addition, through a two-stage collection design, the first dust collection assembly and the second dust collection assembly realize effective graded collection of particles of different sizes, so that the collection efficiency of particles is improved, and the particles are also convenient for the user to clean.BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To describe the technical solutions in the embodiments of the present disclosure or in the prior art more clearly, the following briefly describes the attached figures required for describing the embodiments or the prior art. Apparently, the attached figures in the following description show merely some embodiments of the present disclosure, and a person of ordinary skill in the art may derive other drawings from these attached figures without creative efforts.

[0027] FIG. 1 is a structure diagram of a vacuum cleaner having two stages of spiral separation structures provided by the present disclosure.

[0028] FIG. 2 is a structure diagram of a vacuum cleaner having two stages of spiral separation structures, without a vacuum cleaner body, provided by the present disclosure.

[0029] FIG. 3 is a structure diagram of a second installation part, a first-stage spiral separator, a second-stage spiral separator and a filtering structure of a vacuum cleaner having two stages of spiral separation structures provided by the present disclosure.

[0030] FIG. 4 is a structure diagram of a second installation part, a first-stage spiral separator and a second-stage spiral separator of a vacuum cleaner having two stages of spiral separation structures provided by the present disclosure.

[0031] FIG. 5 is a structure diagram of FIG. 4 at another visual angle.

[0032] FIG. 6 is a structure diagram of a second installation part and a first-stage spiral separator of a vacuum cleaner having two stages of spiral separation structures provided by the present disclosure.

[0033] FIG. 7 is a structure diagram of a communicating pipeline and a second-stage spiral separator of a vacuum cleaner having two stages of spiral separation structures provided by the present disclosure.

[0034] FIG. 8 is a partial enlarged view of A in FIG. 1.REFERENCE SIGNS1, first installation part;

[0036] 2, second installation part; 21, dust collection inlet; 22, installation groove;

[0037] 3, vacuum cleaner body;

[0038] 4, first air inlet channel; 5, first spiral channel; 6, first separation channel; 7, first dust hopper;

[0039] 8, second air inlet channel; 9, second spiral channel; 10, second separation channel; 11, second dust hopper; 12, second dust collection assembly; 121, guide part;

[0040] 13, communicating pipeline;

[0041] 14, filtering structure;

[0042] 15, first buckle assembly; 151, first installation seat; 152, first buckle; 153, second buckle; 154, third buckle;

[0043] 16, second buckle assembly; 161, second installation seat; 162, fourth buckle; and 163, fifth buckle.DETAILED DESCRIPTION OF THE EMBODIMENTS

[0044] In order to make the purpose, technical scheme and advantages of the present disclosure more clear, the technical scheme of the present disclosure is described in detail as follows. Apparently, the embodiments in the following description are merely a part rather than all of the embodiments of the present disclosure. Based on the embodiment in the present disclosure, all other embodiments obtained by the ordinary technical staff in the art under the premise of without contributing creative labor belong to the scope protected by the present disclosure.

[0045] As shown in FIG. 1 to FIG. 8, the present disclosure provides a vacuum cleaner having two stages of spiral separation structures, including a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly 12. The first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between a dust collection inlet 21 and a filtering structure 14 of the vacuum cleaner along a gas flow direction. The first-stage spiral separator includes a first spiral channel 5 for driving airflow entering from the dust collection inlet 21 to separate particles for the first time. The first dust collection assembly communicates with an outlet end of the first spiral channel 5 for collecting particles generated by separation for the first time. The second-stage spiral separator includes a second spiral channel 9 for driving the airflow after separation for the first time to separate particles for the second time. The second dust collection assembly 12 hermetically communicates with an outlet end of the second spiral channel 9 for collecting particles generated by separation for the second time.

[0046] Dust and garbage are sucked from the dust collection inlet through suction generated by a motor, and sequentially passes through the first-stage spiral separator and the second-stage spiral separator for two-stage separation. The airflow after two-stage separation is sequentially discharged from the vacuum cleaner through the filtering structure and the motor.

[0047] Specifically, when the airflow entering from the dust collection inlet flows into the first-stage spiral separator and passes through the first spiral channel 5, the airflow is subjected to the action of centrifugal force, so that relatively large and heavy particles are separated under the action of centrifugal force, move downward along the wall surface of the first spiral channel 5, and fall into the first dust collection assembly to complete particle separation and collection for the first time. The airflow after preliminary separation continues to flow into the second-stage spiral separator. When passing through the second spiral channel 9, the airflow is also subjected to the action of centrifugal force. Finer particles are also effectively separated, move downward along the wall surface of the second spiral channel 9, and fall into the second dust collection assembly 12 to complete particle separation and collection for the second time. Subsequently, the airflow after two-stage separation reaches the filtering structure 14. After two-stage separation of the airflow, the amount of particles reaching the filtering structure is greatly reduced, and the service lives of the filtering structure 14 and the motor are prolonged. In addition, through a two-stage collection design, the first dust collection assembly and the second dust collection assembly 12 realize effective graded collection of particles of different sizes, so that the collection efficiency of particles is improved, and the particles are also convenient for the user to clean.

[0048] As an optional embodiment, the first-stage spiral separator further includes a first separation channel 6. The first separation channel 6 is located on a spiral axis of the first spiral channel 5 for communicating the first spiral channel 5 and the second-stage spiral separator.

[0049] Further, the first-stage spiral separator further includes a first air inlet channel 4. The first air inlet channel 4, the first spiral channel 5 and the first separation channel 6 are sequentially connected along the gas flow direction. An inlet end of the first air inlet channel 4 communicates with the dust collection inlet, and an outlet end of the first air inlet channel 4 tangentially communicates with an inlet end of the first spiral channel 5.

[0050] The first air inlet channel 4 tangentially communicates with the first spiral channel 5, and the airflow enters the first spiral channel 5 in a tangential direction and is sufficiently subjected to the action of centrifugal force, so that relatively large and heavy particles are separated under the action of centrifugal force, move downward along the wall surface of the first spiral channel 5, and fall into the first dust collection assembly to complete particle separation and collection for the first time. Subsequently, the airflow after first separation passes through the first separation channel 6 and flows into the second-stage spiral separator.

[0051] As an optional embodiment, an outer edge of the first spiral channel 5 is provided with a first dust hopper 7 for communicating the first spiral channel 5 and the first dust collection assembly.

[0052] Further, the first spiral channel 5 is designed to be spiral downward along the gas flow direction, and a lower part of the first spiral channel 5 is of an open structure.

[0053] The first spiral channel 5 is designed to be spiral downward, so the airflow path is optimized, and the airflow is better guided. The airflow can fully utilize centrifugal force to separate particles during the flow process, and the particles are thrown to the wall surface of the first spiral channel 5, move downward along the wall surface, and enter the first dust hopper 7.

[0054] The inlet end of the first separation channel 6 extends into the first dust hopper 7.

[0055] The inner diameter of the first dust hopper 7 is gradually decreased from top to bottom, so that the inner wall surface of the first dust hopper 7 forms a guide slope surface, and the path of centrifugal action can be lengthened to a certain extent. The airflow can be subjected to the action of centrifugal force for a longer time in the first dust hopper 7, so that the particles in the airflow are separated more effectively, and the separation efficiency is improved. Subsequently, the separated particles can smoothly fall into the first dust collection assembly along the guide slope surface of the first dust hopper 7, and the airflow after first separation passes through the first separation channel 6 and flows into the second-stage spiral separator.

[0056] As an optional embodiment, the second-stage spiral separator further includes a second separation channel 10. The second separation channel 10 is located on a spiral axis of the second spiral channel 9 for communicating the second spiral channel 9 and the filtering structure 14.

[0057] Further, the second-stage spiral separator further includes a second air inlet channel 8. The second air inlet channel 8, the second spiral channel 9 and the second separation channel 10 are sequentially connected along the gas flow direction. An inlet end of the second air inlet channel 8 communicates with the first separation channel 6, and an outlet end of the second air inlet channel 8 tangentially communicates with an inlet end of the second spiral channel 9.

[0058] The airflow after preliminary separation still enters the second spiral channel 9 in the tangential direction after entering the second air inlet channel 8 through the first separation channel 6, and is also subjected to the action of centrifugal force. Relatively large and heavy particles are separated, move downward along the wall surface of the second spiral channel 9, and fall into the second dust collection assembly 12 to complete particle separation and collection for the second time. Subsequently, the airflow after two-stage separation passes through the second separation channel 10 to reach the filtering structure 14. After two-stage separation of the airflow, the amount of particles reaching the filtering structure 14 is greatly reduced, and the service life of the filtering structure 14 is prolonged.

[0059] As an optional embodiment, an outer edge of the second spiral channel 9 is provided with a second dust hopper 11 for hermetically communicating the second spiral channel 9 and the second dust collection assembly 12.

[0060] Further, the second spiral channel 9 is designed to be spiral downward along the gas flow direction, and a lower part of the second spiral channel 9 is of an open structure.

[0061] The second spiral channel 9 is designed to be spiral downward, so the airflow path is optimized, and the airflow is better guided. The airflow can fully utilize centrifugal force to separate particles during the flow process, and the particles are thrown to the wall surface of the second spiral channel 9, move downward along the wall surface, and enter the second dust hopper 11.

[0062] The inlet end of the second separation channel 10 extends into the second dust hopper 11, and the second separation channel 10 and the first separation channel 6 are arranged in parallel.

[0063] The inner diameter of the second dust hopper 11 is gradually decreased from top to bottom, so that the inner wall surface of the second dust hopper 11 forms a guide slope surface, and the path of centrifugal action can be lengthened to a certain extent. The airflow can be subjected to the action of centrifugal force for a longer time in the second dust hopper 11, so that the particles in the airflow are separated more effectively, and the separation efficiency is further improved. Subsequently, the separated particles can smoothly fall into the second dust collection assembly 12 along the guide slope surface of the second dust hopper 11. The airflow after two-stage separation passes through the second separation channel 10 to flow into the filtering structure 14.

[0064] Furthermore, the particles separated by the first-stage spiral separator are collected by the first dust collection assembly. The first dust collection assembly can accommodate a large amount of large particles, so that the need for frequent cleaning is reduced. The finer particles separated by the second-stage spiral separator are collected by the second dust collection assembly 12. Such classification and separation design enables the vacuum cleaner to separate and collect particles of different sizes more effectively, so that the particles are convenient for the user to clean.

[0065] As an optional embodiment, the first separation channel 6 hermetically communicates with the second air inlet channel 8 through a communicating pipeline 13.

[0066] Further, the communicating pipeline 13 is of a multi-stage elbow connecting structure, and specifically can be flexibly designed according to use requirements. As shown in FIG. 7, the communicating pipe 13 in the present embodiment is of a three-stage elbow connecting structure. Moreover, an inner wall of a curved section of the communicating pipeline 13 is a guide curved surface to optimize the flow of the airflow.

[0067] The function of the communicating pipe 13 is to communicate the first-stage spiral separator with the second-stage spiral separator, so that the airflow passes through the second air inlet channel 8 in the tangential direction to enter the second spiral channel 9.

[0068] It should be noted that the specific sealing connection mode between the communicating pipeline 13, the first separation channel 6 and the second air inlet channel 8 is a conventional detachable sealing design between pipelines in the prior art, and will not be described in detail here.

[0069] As an optional embodiment, a guide part 121 having a gradually decreasing inner diameter is arranged above an inlet end of the second dust collection assembly 12.

[0070] In this way, the outlet end of the second dust hopper 11 can be guided to be inserted into the inlet end of the second dust collection assembly 12, so that the gap between the second dust hopper 11 and the second dust collection assembly 12 is gradually reduced, tight sealing connection is finally formed, and particles are effectively prevented from leaking from the joint of the second dust hopper 11 and the second dust collection assembly 12.

[0071] As an optional embodiment, the vacuum cleaner having two stages of spiral separation structures further includes a first installation part 1, a second installation part 2 and a vacuum cleaner body 3 hermetically connected sequentially from top to bottom.

[0072] The first installation part 1 is used for installing the filtering structure and the motor.

[0073] The second installation part 2 is used for installing the first-stage spiral separator and the second-stage spiral separator and provided with a dust suction inlet 21.

[0074] The vacuum cleaner body 3 is used for installing the first dust collection assembly and the second dust collection assembly 12.

[0075] Further, the first-stage spiral separator and the second dust hopper 11 are integrally formed with the first installation part 1 through injection molding.

[0076] As shown in FIG. 3 and FIG. 4, an installation groove 22 is formed in the second installation part 2 for installing the second-stage spiral separator and part of the communicating pipeline 13.

[0077] Furthermore, the first-stage spiral separator and the second-stage spiral separator are arranged in the second installation part 2 instead of a tail end of a hand-held tube in the prior art, so the volume and weight of the hand-held tube are not increased, and a user can easily grip and operate the hand-held tube.

[0078] The first dust collection assembly may be an independent dust collection bucket, or a dust collection cavity of the vacuum cleaner body 3 may be directly used as the first dust collection assembly. The second dust collection assembly 12 is an independent dust collection bucket having a gradually decreasing inner diameter. Wherein, specific specifications of the first dust collection assembly and the second dust collection assembly 12 can be flexibly designed according to use requirements.

[0079] As an optional embodiment, the first installation part 1, the second installation part 2 and the vacuum cleaner body 3 are detachably connected through buckle assemblies.

[0080] Further, as shown in FIG. 1 and FIG. 8, the buckle assembly includes a first buckle assembly 15. The first buckle assembly 15 includes a first installation seat 151, a first buckle 152, a second buckle 153, and a third buckle 154. The first installation seat 151 is rotatably arranged on the vacuum cleaner body 3. The first buckle 152 is rotatably arranged on the first installation seat 151. The second buckle 153 is rotatably arranged on the second installation part 2, and is provided with a first clamping groove adapted to the first buckle 152. The third buckle 154 is arranged on the first installation part 1, and is provided with a second clamping groove adapted to the second buckle 153.

[0081] Two groups of first buckle assemblies 15 are provided and are symmetrically arranged to improve the connection stability among the first installation part 1, the second installation part 2 and the vacuum cleaner body 3.

[0082] The first installation seat 151 is connected with the vacuum cleaner body 3 through a rotating shaft. A rotating end of the first buckle 152 is connected with the first installation seat 151 through the rotating shaft, and a hook end of the first buckle 152 is in clamping fit with the first clamping groove. The second buckle 153 is rotatably connected with the second installation part 2 through a rotating shaft, and a hook end of the second buckle 153 is in clamping fit with the second clamping groove of the third buckle 154.

[0083] First, the hook end of the second buckle 153 is aligned and clamped into the second clamping groove of the third buckle 154, so that the first installation part 1 and the second installation part 2 are firmly connected together. Then, the hook end of the first buckle 152 is aligned and clamped into the first clamping groove of the second buckle 153, so that the second installation part 2 and the vacuum cleaner body 3 are firmly connected together.

[0084] The buckle assembly further includes a second buckle assembly 16. The second buckle assembly 16 includes a second installation seat 161, a fourth buckle 162 and a fifth buckle 163. The second installation seat 161 is arranged on the second installation part 2. The fourth buckle 162 is rotatably arranged on the second installation seat 161. The fifth buckle 163 is arranged on the vacuum cleaner body 3, and is in clamping fit with the fourth buckle 162.

[0085] Further, two groups of second buckle assemblies 16 are provided and symmetrically arranged.

[0086] A rotating end of the fourth buckle 162 is rotatably connected with the second installation part 161 through a rotating shaft, and a hook end of the second buckle 162 is in clamping fit with the fifth buckle 163.

[0087] The hook end of the fourth buckle 162 is aligned to the fifth buckle 163, and the fourth buckle 162 and the fifth buckle 163 are clamped together by applying external force, so that the second installation part 2 and the vacuum cleaner body 3 are firmly connected together.

[0088] It should be noted that the specific clamping-fit structure of the first buckle assembly 15 and the second buckle assembly 16 adopts the prior art as long as the function of rotational clamping can be realized, and the details will not be described here.

[0089] It is understandable that same or similar parts in the embodiments can be referred to each other, the unspecified content in some embodiments can refer to same or similar content in other embodiments.

[0090] In the description of the present disclosure, it needs to be illustrated that, except as otherwise noted, the meaning of ‘a plurality of’ is two or more than two; and the indicative direction or position relations of the terms such as ‘upper’, ‘lower’, ‘left’, ‘right’, ‘inside’, ‘outside’, ‘front end’, ‘rear end’, ‘head’ and ‘tail’ are direction or position relations illustrated based on the accompanying diagrams, just for facilitating the description of the present disclosure and simplifying the description, but not for indicating or hinting that the indicated device or element must be in a specific direction and is constructed and operated in the specific direction, the terms cannot be understood as the restriction of the present disclosure. Moreover, the terms such as ‘first’, ‘second’, and ‘third’ are just used for distinguishing the description, but cannot be understood to indicate or hint relative importance.

[0091] In the description of the present disclosure, it further needs to be illustrated that, except as otherwise noted, the terms such as ‘installation part’, ‘link’ and ‘connect’ should be generally understood. For example, the components can be fixedly connected, and also can be detachably connected or integrally connected; the components can be mechanically connected, and also can be electrically connected; and the components can be directly connected, and also can be indirectly connected through an intermediate. For those skilled in the art, the specific meanings of the terms in the present disclosure can be understood according to specific conditions.

[0092] In the description of the specification, the description of the reference terms such as ‘one embodiment’, ‘some embodiments’, ‘examples’, ‘specific examples’ or ‘one example’ indicates to be contained in at least one embodiment or example of the disclosure in combination with specific characteristics, structures, materials or characteristics described by the embodiment or example. In the specification, schematic expression of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any of one or more embodiments or examples appropriately.

[0093] The foregoing descriptions are merely specific implementations of the present disclosure, but are not intended to limit the protection scope of the present disclosure. Any variation or replacement readily figured out by a person skilled in the art within the technical scope disclosed in the present disclosure shall fall within the protection scope of the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A vacuum cleaner having two stages of spiral separation structures, comprising a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly, wherein the first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between a dust collection inlet and a filtering structure of the vacuum cleaner along a gas flow direction;wherein the first-stage spiral separator comprises a first spiral channel for driving airflow entering from the dust collection inlet to separate particles for the first time; wherein the first dust collection assembly communicates with an outlet end of the first spiral channel for collecting particles generated by separation for the first time;wherein the second-stage spiral separator comprises a second spiral channel for driving the airflow after separation for the first time to separate particles for the second time; and wherein the second dust collection assembly hermetically communicates with an outlet end of the second spiral channel for collecting particles generated by separation for the second time.

2. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein the first-stage spiral separator further comprises a first separation channel, the first separation channel being located on a spiral axis of the first spiral channel for communicating the first spiral channel and the second-stage spiral separator.

3. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein an outer edge of the first spiral channel is provided with a first dust hopper for communicating the first spiral channel and the first dust collection assembly.

4. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein the second-stage spiral separator further comprises a second separation channel, the second separation channel being located on a spiral axis of the second spiral channel for communicating the second spiral channel and the filtering structure.

5. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein an outer edge of the second spiral channel is provided with a second dust hopper for hermetically communicating the first spiral channel and the second dust collection assembly.

6. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein the first separation channel hermetically communicates with the second air inlet channel through a communicating pipeline.

7. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein a guide part having a gradually decreasing inner diameter is arranged above an inlet end of the second dust collection assembly.

8. The vacuum cleaner having two stages of spiral separation structures according to claim 1, further comprising a first installation part, a second installation part and a vacuum cleaner body hermetically connected sequentially from top to bottom,wherein the first installation part is used for installing the filtering structure and the motor;wherein the second installation part is used for installing the first-stage spiral separator and the second-stage spiral separator and provided with a dust suction inlet; andthe vacuum cleaner body is used for installing the first dust collection assembly and the second dust collection assembly.

9. The vacuum cleaner having two stages of spiral separation structures according to claim 1, wherein the first installation part, the second installation part and the vacuum cleaner body are detachably connected through buckle assemblies.

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