Dust separation device and dust collector

Abstract

The application belongs to the technical field of dust collection devices, and particularly relates to a dust-gas separation device and a dust collector. The dust-gas separation device comprises a shell, a first separator and a second separator arranged in a cyclone separation cavity, an air inlet channel, the cyclone separation cavity and a dust collection cavity are formed in the shell, the air inlet channel and the dust collection cavity are both communicated with the cyclone separation cavity, and an air outlet is formed on the shell. A guide plate extending along the airflow flowing direction in the cyclone separation cavity is arranged on the inner circumferential wall of the cyclone separation cavity, the first separator and the second separator are respectively located on the opposite sides of the guide plate in the axial direction of the cyclone separation cavity, and the first separator and the second separator are both communicated with the air outlet. The dust-gas separation device has good airflow flowing smoothness, small airflow kinetic energy loss and high dust-gas separation efficiency, so that the dust collector will not have the problems of filter blockage and sudden suction force reduction, meanwhile, the kinetic energy loss of the airflow is reduced, and the dust collector has better dust collection performance.

Description

Technical Field

[0001] This application belongs to the field of vacuum cleaner technology, and particularly relates to a dust-air separation device and a vacuum cleaner. Background Technology

[0002] Vacuum cleaners are currently a common cleaning tool in daily life, greatly reducing the difficulty of manual cleaning and the burden of housework. However, some vacuum cleaners utilize a single-cone cyclone dust-air separation device. A flawed internal cavity design in this device results in poor airflow smoothness, excessive loss of airflow energy, and low dust-air separation efficiency. This can easily clog the filter during use, leading to a sharp drop in suction power and significant performance loss. Summary of the Invention

[0003] The purpose of this application is to provide a dust-air separation device and a vacuum cleaner, which aims to solve the technical problem that the vacuum cleaner suffers from a sharp drop in suction power and a large loss in performance due to the unreasonable design of the internal cavity structure of the separation device in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a dust-gas separation device, comprising a housing, wherein an air inlet channel, a cyclone separation chamber, and a dust collection chamber are formed within the housing, the air inlet channel and the dust collection chamber are both connected to the cyclone separation chamber, and an air outlet is formed on the housing; the dust-gas separation device further comprises a first separator and a second separator disposed within the cyclone separation chamber, wherein a guide plate extending along the airflow direction within the cyclone separation chamber is disposed on the inner peripheral wall of the cyclone separation chamber, the first separator and the second separator are respectively located on opposite sides of the guide plate along the axial direction of the cyclone separation chamber, and both the first separator and the second separator are connected to the air outlet.

[0005] Optionally, the thickness of the guide plate gradually increases along the airflow direction within the cyclone separation chamber.

[0006] Optionally, a plane perpendicular to the axis of the cyclone separator is an auxiliary plane, and an auxiliary straight line is provided on the auxiliary plane, the auxiliary straight line being perpendicular to the axis of the air intake channel;

[0007] The air inlet edge of the guide plate is projected onto the auxiliary plane at an angle to the auxiliary straight line, the angle ranging from 30° to 120°. Optionally, the dust-gas separation device further includes a connecting column with a communicating hole formed inside. The first separator and the second separator are installed at opposite ends of the connecting column and both communicate with the communicating hole. The connecting column is installed on the guide plate, and an exhaust channel is formed inside the guide plate, the exhaust channel connecting the air outlet and the communicating hole.

[0008] Optionally, the dust-gas separation device further includes a partition plate installed in the connecting hole, dividing the connecting hole into a first section and a second section. The first section connects the first separator and the exhaust channel, and the second section connects the second separator and the exhaust channel.

[0009] Optionally, the ratio of the projected area of ​​the partition along the axial direction of the connecting hole to the cross-sectional area of ​​the connecting hole is greater than 0.75.

[0010] Optionally, the air outlet end of the air inlet channel gradually moves away from the opposite side walls of the cyclone separator along the axial direction of the airflow.

[0011] Optionally, the cyclone separation chamber has an ash outlet that communicates with the dust collection chamber, and the opposite sides of the ash outlet along the axial direction of the cyclone separation chamber are flush with the two end faces of the cyclone separation chamber.

[0012] Optionally, the housing includes an air outlet plate and a dust cup, the dust cup having an air inlet channel and a dust collection chamber; the air outlet plate is detachably mounted on the dust cup and surrounds the dust cup to form the cyclone separation chamber; the guide plate is mounted on the air outlet plate; and the air outlet is formed on the air outlet plate.

[0013] Optionally, the dust-air separation device further includes a first latch, one end of the air outlet plate is rotatably connected to the dust cup, and the other end of the air outlet plate is connected to the dust cup through the first latch.

[0014] The dust-gas separation device provided in this application has at least one of the following technical effects: The dust-gas separation device includes a first separator and a second separator, and the inner peripheral wall of the cyclone separation chamber is provided with a guide fluid that extends along the flow direction of the airflow in the cyclone separation chamber. Simultaneously, the first separator and the second separator are located on opposite sides of the guide plate along the axial direction of the cyclone separation chamber. Thus, the airflow carrying impurities, dust, etc., enters the cyclone separation chamber from the inlet channel and flows under the guidance of the guide plate. The guide plate divides the airflow into two parts, and the two parts flow out from the first separator and the second separator respectively, finally exiting through the outlet into the subsequent device (i.e., the air duct of the handheld device). The airflow is divided into two parts under the guidance of the guide plate, and the two parts rotate towards opposite sides of the guide plate and exit from the first separator located on opposite sides of the guide plate. The airflow is discharged through the first and second separators, which reduces the mutual collision between the two airflows, reduces eddies within the cyclone separation chamber, increases airflow smoothness, improves airflow velocity, and enhances dust-gas separation efficiency. Simultaneously, it reduces the amount of dust in the discharged airflow from the cyclone separation chamber caused by airflow collisions, preventing subsequent filter clogging. Furthermore, the two airflows are discharged separately from the first and second separators located on either side of the guide plate, preventing uneven flow velocity caused by the two airflows concentrating in one location, improving airflow smoothness, and enhancing dust-gas separation efficiency. Additionally, the placement of the first and second separators increases the exhaust area of ​​the cyclone separation chamber, helping to reduce exhaust resistance and further improving dust-gas separation efficiency. The dust-air separation device has good airflow smoothness, low airflow kinetic energy loss, and high dust-air separation efficiency. As a result, vacuum cleaners using this dust-air separation device will not experience filter clogging or sudden drop in suction power. At the same time, reducing the kinetic energy loss of the airflow also enables the vacuum cleaner to have better dust collection performance.

[0015] In another embodiment of this application, a vacuum cleaner is provided, including the dust-air separation device described above.

[0016] The vacuum cleaner of this application, by employing the aforementioned dust-air separation device, has good airflow smoothness, low airflow kinetic energy loss, and high dust-air separation efficiency. As a result, the vacuum cleaner will not experience filter clogging or sudden drop in suction power. At the same time, reducing the kinetic energy loss of the airflow also enables the vacuum cleaner to have better dust collection performance. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a vacuum cleaner provided in an embodiment of this application.

[0019] Figure 2 for Figure 1 The diagram shows a cross-sectional view of the vacuum cleaner.

[0020] Figure 3 for Figure 1 The diagram shows a first-view structural diagram of the dust-gas separation device.

[0021] Figure 4 for Figure 1 The diagram shows a second-view structural diagram of the dust-gas separation device.

[0022] Figure 5 for Figure 3 The diagram shows a cross-sectional view of the dust-gas separation device in the first direction.

[0023] Figure 6 This is a cross-sectional view of the dust-gas separation device in a first direction in another embodiment of this application.

[0024] Figure 7 This is a cross-sectional view of the dust-gas separation device in a first direction in other embodiments of this application.

[0025] Figure 8 for Figure 3 The diagram shows a cross-sectional view of the dust-gas separation device in the second direction.

[0026] Figure 9 for Figure 3 The exploded view of the dust-gas separation device shown.

[0027] Figure 10 for Figure 9 The diagram shows a third-view structural schematic of the air outlet bracket.

[0028] Figure 11 for Figure 9 The diagram shows a fourth-view structural schematic of the air outlet bracket.

[0029] Figure 12 This is a schematic diagram of the air outlet support in a dust-gas separation device according to another embodiment of this application.

[0030] Figure 13 for Figure 9 The diagram shows the structure of the dust cup.

[0031] Figure 14 This is a schematic diagram of the structure of the dust cup in the dust-gas separation device in some other embodiments of this application.

[0032] Figure 15 This is a schematic diagram of the dust cup in the dust-gas separation device in other embodiments of this application.

[0033] The following are the labeling elements in the figure:

[0034] 1—Vacuum cleaner; 10—House; 11—Dust cup

[0035] 12—Air outlet bracket; 21—First separator; 22—Second separator

[0036] 31—First locking latch; 32—Second locking latch; 100—Dust and gas separation device

[0037] 111—Dust cup body; 112—Bottom cover; 113—End plate

[0038] 114—Inlet pipe; 115—Dust outlet plate; 121—Air outlet plate

[0039] 122—Guide plate; 123—Connecting column; 124—Baffle plate

[0040] 200—Handheld device; 201—Air duct; 210—Outer casing

[0041] 220—Air inlet filter; 230—Motor; 240—Impeller

[0042] 250—Air outlet filter; 260—Battery; 1101—Cyclone separator chamber

[0043] 1102—Ash outlet; 1103—Exhaust area; 1104—Flow channel

[0044] 1111—Dust collection chamber; 1141—Air inlet channel; 1142—Air outlet.

[0045] 1211—Exhaust port; 1221—Exhaust passage; 1222—Intake side

[0046] 1231—Connecting hole; 12311—First hole segment; 12312—First hole segment. Detailed Implementation

[0047] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0048] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] It should also be noted that in the embodiments of this application, the same reference numerals are used to represent the same component or part. For the same part in the embodiments of this application, the reference numerals may only be used to mark one part or component as an example. It should be understood that the reference numerals are also applicable to other identical parts or components.

[0052] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0053] This application provides a dust-air separation device 100, which is applied in a vacuum cleaner 1 to separate dust, debris, etc. from the air, thereby realizing vacuuming operation. Specifically, the dust-air separation device 100 can be used in vacuum cleaners 1 such as canister vacuum cleaners, upright vacuum cleaners, stick vacuum cleaners, and handheld vacuum cleaners. Its specific application can be selected according to the actual situation and is not limited here.

[0054] To clearly describe the technical solution of this application, the embodiments of this application are illustrated by taking the application of the dust-air separation device 100 in a handheld vacuum cleaner as an example.

[0055] Combination Figure 1 and Figure 2 As shown, the vacuum cleaner 1 includes a dust-air separation device 100 and a handheld device 200. The handheld device 200 evacuates the dust-air separation device 100, allowing airflow containing impurities and dust to enter the dust-air separation device 100. After the dust-air separation device 100 removes the impurities and dust from the airflow, the airflow is discharged through the handheld device 200. Specifically, the handheld device 200 includes a housing 210, an inlet filter 220, a motor 230, an impeller 240, and an outlet filter 250. An air duct 201 is formed inside the housing 10, and the inlet filter 220, the motor 230, and the impeller 240 are arranged sequentially from top to bottom within the air duct 201. Inside the vacuum cleaner 1, the exhaust filter 250 surrounds the motor 230, and the air inlet of the air duct 201 is connected to the air outlet 1211 of the dust-air separation device 100. When the vacuum cleaner 1 is working, the motor 230 drives the impeller 240 to rotate and evacuate the air duct 201, and draws the airflow discharged from the dust-air separation device 100 into the air duct 201. Then, after the airflow is filtered by the inlet filter 220, it passes through the impeller 240 and the exhaust filter 250 and is discharged from the outer casing 210. This completes the vacuuming operation. The gas after dust-air separation needs to be filtered by the inlet filter 220 and the exhaust filter 250 to avoid secondary pollution.

[0056] Combination Figure 2, Figure 3 and Figure 6 As shown, the dust-gas separation device 100 includes a housing 10 and a first separator 21 and a second separator 22 disposed within a cyclone separation chamber 1101. An air inlet channel 1141, a cyclone separation chamber 1101, and a dust collection chamber 1111 are formed within the housing 10. Both the air inlet channel 1141 and the dust collection chamber 1111 are connected to the cyclone separation chamber 1101. An air outlet 1211 is formed on the housing 10. Specifically, the cyclone separation chamber 1101 is a cylindrical cavity, and the first separator 21 and the second separator 22 are located along the axial direction of the cyclone separation chamber 1101 (see reference). Figure 8 (As indicated by the middle arrow G) are arranged sequentially, with the axis E of the intake channel 1141 tangent to the outer peripheral wall of the cyclone separator 1101. This arrangement ensures that the airflow carrying impurities, dust, etc., enters the cyclone separator 1101 from the intake channel 1141 and undergoes high-speed circular motion within the cyclone separator 1101 (see...). Figure 2 The path indicated by arrow A in the middle allows impurities and dust to enter the dust collection chamber 1111 under the action of centrifugal force (see the path indicated by arrow B in section 2). The airflow after removing dust and impurities is discharged from the first separator 21 and the second separator 22, thus achieving dust-air separation. In addition, both the first separator 21 and the second separator 22 are connected to the air outlet 1211, and the air inlet of the air duct 201 is connected to the air outlet 1211. Therefore, the airflow after removing dust and impurities flows out from the first separator 21 and the second separator 22 and enters the air duct 201 of the handheld device 200, and is then filtered before being discharged (see the path indicated by arrow B in section 2). Figure 2 (follow the path indicated by arrow C in the diagram), and the vacuuming operation is complete.

[0057] In this embodiment, the inner peripheral wall of the cyclone separation chamber 1101 is provided with a direction along the airflow direction within the cyclone separation chamber 1101 (see reference). Figure 2 The guide plate 122 extending in the direction indicated by arrow D can be understood as the direction of airflow within the cyclone separation chamber 1101, i.e. the circumferential direction of the cyclone separation chamber 1101; the first separator 21 and the second separator 22 are respectively located on opposite sides of the guide plate 122 along the axial direction of the cyclone separation chamber 1101.

[0058] The dust-gas separation device 100 of this application embodiment includes a first separator 21 and a second separator 22. A guide fluid is provided on the inner peripheral wall of the cyclone separation chamber 1101, extending along the flow direction of the airflow within the cyclone separation chamber 1101. Simultaneously, the first separator 21 and the second separator 22 are located on opposite sides of the guide plate 122 along the axial direction of the cyclone separation chamber 1101. Thus, airflow carrying impurities, dust, etc., enters the cyclone separation chamber 1101 through the inlet channel 1141 and flows under the guidance of the guide plate 122. The guide plate 122 divides the airflow into two parts, which flow out from the first separator 21 and the second separator 22 respectively, and finally exit through the outlet 1211 into the subsequent device (i.e., the air duct 201 of the handheld device 200). The airflow is divided into two parts under the guidance of the guide plate 122, and the two parts rotate towards opposite sides of the guide plate 122 and exit from the first separator 21 and the second separator 22 respectively. The airflow is discharged from separators 21 and 22, which reduces the mutual collision between the two airflows, reduces the eddies in the cyclone separation chamber 1101, increases the smoothness of airflow, improves the airflow velocity, and enhances the dust-gas separation efficiency. Simultaneously, it reduces the amount of dust that stops rotating after being impacted by the airflow and directly enters the first separator 21 and second separator 22, thus reducing the amount of dust contained in the airflow discharged from the cyclone separation chamber 1101 and preventing subsequent filter clogging. Furthermore, the two airflows are discharged from the first separator 21 and second separator 22 located on both sides of the guide plate, respectively. This avoids the problem of uneven flow velocity caused by the two airflows concentrating in one location, improving the smoothness of airflow and enhancing the dust-gas separation effect. In addition, the arrangement of the first separator 21 and second separator 22 increases the exhaust area of ​​the cyclone separation chamber 1101, which helps reduce exhaust resistance and further improves the dust-gas separation efficiency.

[0059] The dust-air separation device 100 of this application embodiment has good airflow smoothness, low airflow kinetic energy loss, and high dust-air separation efficiency. As a result, the vacuum cleaner 1 using the dust-air separation device 100 will not experience filter clogging or sudden drop in suction power. At the same time, reducing the kinetic energy loss of the airflow also enables the vacuum cleaner 1 to have better dust collection performance.

[0060] In this embodiment, combined with Figure 2As shown, a battery 260 is also provided inside the outer casing 210. The battery 260 is used to power the motor 230 to enable wireless operation of the vacuum cleaner 1. The outer casing 10 and the outer casing 210 are mechanically connected to ensure a sealed connection between the air outlet 1211 and the air inlet of the air duct 201 to prevent air leakage. Specifically, the outer casing 10 and the outer casing 210 can be detachably connected, such as by screwing, snapping, or hinge. This arrangement allows the handheld device 200 to be separated from the dust-air separation device 100, making it convenient to clean the dust and debris in the dust collection chamber 1111.

[0061] In another embodiment of this application, combined with Figure 10 and Figure 12 As shown, the thickness of the guide plate 122 in the provided dust-gas separation device 100 gradually increases along the airflow direction within the cyclone separation chamber 1101. This causes the airflow entering the cyclone separation chamber 1101 to first contact the narrower end of the guide plate 122, splitting into two parts. Then, as the width of the guide plate 122 gradually increases, the two airflow parts become increasingly separated, resulting in better flow separation, smoother airflow, and better dust-gas separation. Specifically, the guide plate 122 gradually changes from a sharp edge to a wide surface along the airflow direction within the cyclone separation chamber 1101. This causes the airflow to first impact the sharp edge and then split into two parts, reducing the impact area between the airflow and the guide plate 122, thereby reducing kinetic energy loss and turbulence, and further improving the smoothness of airflow and dust-gas separation efficiency. Alternatively, combined with... Figure 12 As shown, in the direction of airflow within the cyclone separation chamber 1101, the guide plate 122 has a multi-segment structure, with the thickness of the first segment always greater than that of the second segment. Of course, in other embodiments, the guide plate 122 can also adopt other structures, which are not limited here. In addition, the guide plate 122 gradually changes from a sharp edge to a wide surface along the direction of airflow within the cyclone separation chamber 1101. This structural design makes the two opposite sides of the guide plate 122 in the axial direction of the cyclone separation chamber 1101 smooth slopes. This ensures that the airflow rotates along the slope direction and finally enters the dust collection chamber 1111. Compared with the multi-segment guide plate 122 structure, this structural design of the guide plate 122 avoids the problem of airflow impacting the steps, reduces airflow resistance, reduces turbulence within the cyclone separation chamber 1101, and is beneficial to improving dust-gas separation efficiency.

[0062] In another embodiment of this application, combined with Figure 5As shown, the plane perpendicular to the axis of the cyclone separation chamber 1101 of the dust-gas separation device 100 is an auxiliary plane. An auxiliary straight line F is provided on the auxiliary plane, and the auxiliary straight line F is perpendicular to the axis E of the air inlet channel 1141. The projection line of the air inlet edge 1222 of the guide plate 122 on the auxiliary plane is set at an angle to the auxiliary straight line F, and the angle α is in the range of 30° to 120°. It is understandable that the air intake edge 1222 of the guide vane 122 is the edge of the guide vane 122 that first contacts the airflow, such as the sharp edge mentioned above or the end face of the multi-segment guide vane 122 that first contacts the airflow. In addition, the angle range is set so that a flow channel 1104 is formed between the air intake channel 1141 and the guide vane 122. In this way, after the airflow enters the cyclone separation chamber 1101 from the air intake channel 1141, it needs to pass through the flow channel 1104 before impacting and contacting the guide vane 122 for diversion, thereby avoiding the accumulation of hair in the airflow on the air intake edge 1222 of the guide vane 122 and causing blockage. Specifically, the included angle α can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°, 70°, 75°, 80°, 85°, 90°, 95°, 100°, 105°, 110°, 115°, or 120°. If the included angle α is set too small, the distance of the flow channel 1104 is short, and the airflow travels a short distance in the cyclone separation chamber 1101 before directly impacting the guide plate 122, making it easy for hair to accumulate on the air inlet side 1222. If the included angle α is set too large, the distance of the flow channel 1104 is long, and the length of the guide plate 122 is short, which cannot achieve a good diversion effect and affects the dust and gas separation effect.

[0063] Example, combined Figure 5 As shown, the auxiliary plane passes through the air intake edge 1222 of the guide vane 122, that is, the projection line of the air intake edge 1222 of the guide vane 122 on the auxiliary plane coincides with the air intake edge 1222 of the guide vane 122, and the included angle α is 90°; combined with Figure 6 As shown, the auxiliary plane passes through the air intake edge 1222 of the guide vane 122, that is, the projection line of the air intake edge 1222 of the guide vane 122 on the auxiliary plane coincides with the air intake edge 1222 of the guide vane 122, and the included angle α is 30°; combined with Figure 7 As shown, the auxiliary plane passes through the air intake edge 1222 of the guide vane 122. That is, the projection line of the air intake edge 1222 of the guide vane 122 on the auxiliary plane coincides with the air intake edge 1222 of the guide vane 122, and the included angle α is 120°.

[0064] In another embodiment of this application, combined with Figure 9 , Figure 10 and Figure 11As shown, the dust-gas separation device 100 provided further includes a connecting column 123, a connecting hole 1231 is formed inside the connecting column 123, a first separator 21 and a second separator 22 are installed at opposite ends of the connecting column 123 and are both connected to the connecting hole 1231; the connecting column 123 is installed on the guide plate 122, an exhaust channel 1221 is formed inside the guide plate 122, and the exhaust channel 1221 connects the air outlet 1211 and the connecting hole 1231. Specifically, the airflow discharged from the first separator 21 and the second separator 22 merges in the connecting hole 1231 in the connecting column 123 and then is discharged directly from the exhaust channel 1221 in the guide plate 122. In this way, the entire airflow discharge path is located inside the connecting column 123 and the guide plate 122, without the need to set an exhaust structure in other positions in the cyclone separation chamber 1101. This results in fewer obstructions to the airflow in the cyclone separation chamber 1101, better airflow smoothness, and higher dust and gas separation efficiency.

[0065] In another embodiment of this application, combined with Figure 9 , Figure 10 and Figure 11 As shown, the dust-gas separation device 100 also includes a partition 124, which is installed in the connecting hole 1231 and divides the connecting hole 1231 into a first section 12311 and a second section 12312. The first section 12311 connects the first separator 21 and the exhaust channel 1221, and the second section 12312 connects the second separator 22 and the exhaust channel 1221. The airflow discharged from the first separator 21 and the airflow discharged from the second separator 22 flow into the exhaust channel 1221 through the first section 12311 and the second section 12312, respectively. This avoids the airflows discharged from the first separator 21 and the second separator 22 from colliding with each other, thereby improving the smoothness of airflow and improving the dust-gas separation effect. Specifically, the partition 124 is arranged perpendicular to the axis of the connecting hole 1231. The connecting hole 1231 and the exhaust channel 1221 are arranged perpendicularly. The inner wall of the connecting hole 1231 forms a connecting opening. The connecting hole 1231 is connected to the exhaust channel 1221 through the connecting opening. The partition 124 is located in the middle of the connecting opening, so that the connecting opening of the first hole section 12311 and the second hole section 12312 is connected. In this way, the connection between the first separator 21 and the exhaust channel 1221 and the connection between the second separator 22 and the exhaust channel 1221 are realized. This structure is ingeniously designed and simple in structure, easy to process and manufacture, and has good airflow smoothness, which is conducive to improving the dust and gas separation effect and efficiency.

[0066] In another embodiment of this application, combined with Figure 9 , Figure 10 and Figure 11As shown, the ratio of the projected area of ​​the partition plate 124 along the axial direction of the connecting hole 1231 to the cross-sectional area of ​​the connecting hole 1231 in the provided dust-gas separation device 100 is greater than 0.75. This configuration effectively separates the airflow discharged from the first separator 21 into the first orifice 12311 and the airflow discharged from the second separator 22 into the second orifice 12312, thereby reducing the impact between the two airflows, improving the smoothness of exhaust, and enhancing the dust-gas separation effect. If the ratio of the projected area of ​​the baffle 124 along the axial direction of the connecting hole 1231 to the cross-sectional area of ​​the connecting hole 1231 is set too small, it will be impossible to separate the airflows in the first orifice 12311 and the second orifice 12312, resulting in airflow impact, affecting the smoothness of airflow, and thus affecting the dust-gas separation effect. Specifically, the ratio of the projected area of ​​the baffle 124 along the axial direction of the connecting hole to the cross-sectional area of ​​the connecting hole 1231 can be 0.75, 0.78, 0.81, 0.84, 0.87, 0.9, 0.93, 0.96, 0.97, or 1.

[0067] Combination Figure 8 As shown, when the projected area of ​​the partition 124 along the axial direction of the connecting hole 1231 is smaller than the cross-sectional area of ​​the connecting hole 1231, an exhaust region 1103 is formed between the side of the partition 124 facing the connecting opening and the connecting opening, connecting the first hole section 12311 and the second hole section 12312. This exhaust region 1103 can increase the exhaust area of ​​the airflow in the first hole section 12311 and the airflow in the second hole section 12312 flowing into the exhaust channel 1221, thereby increasing the smoothness of airflow discharge and improving the dust and gas separation effect and efficiency.

[0068] In another embodiment of this application, the outer surfaces of the first separator 21 and the second separator 22 of the dust-gas separation device 100 are arc-shaped surfaces. This design ensures that the outer surfaces of the first separator 21 and the second separator 22 are smooth, preventing hair in the airflow from easily getting tangled on them and avoiding blockages. This improves the smoothness of airflow and enhances dust-air separation. It should be noted that both the first separator 21 and the second separator 22 have multiple through holes for airflow to facilitate exhaust from the cyclone separation chamber 1101. Specifically, the first separator 21 and the second separator 22 can be hemispherical, semi-elliptical, or other shapes, and their specific shapes can be selected according to actual needs without limitation. Furthermore, the first separator 21 and the connecting post 123, as well as the second separator 22 and the connecting post 123, are fixedly connected, such as by welding or bonding, or they can be detachably connected, such as by screwing or snap-fitting. Detachable connections facilitate cleaning of components such as the first separator 21, the second separator 22, the connecting post 123, and the guide plate 122.

[0069] In another embodiment of this application, combined with Figure 8 As shown, the air outlet 1142 of the air inlet channel 1141 of the provided dust-gas separation device 100 gradually moves away from each other along the axial direction of the cyclone separation chamber 1101 on both sides. Thus, the airflow carrying dust and impurities expands after passing through the air outlet 1142 of the air inlet channel 1141, causing the airflow to enter the cyclone separation chamber 1101 as much as possible towards the opposite sides along the axial direction. This reduces the risk of impurities and dust getting stuck on the guide plate 122 or directly entering the first separator 21 and the second separator 22, thereby reducing the risk of blockage in the dust-gas separation device 100 and improving the dust-gas separation efficiency. It is understood that the air outlet 1142 of the air intake channel 1141 refers to the end of the air intake channel 1141 near the cyclone separation chamber 1101. Specifically, the opposite side walls of the air outlet 1142 of the air intake channel 1141 are expanded outward at an angle or with an arc, so that the width of the end of the air intake channel 1141 near the cyclone separation chamber 1101 gradually increases from 0mm to 15mm. Of course, other expansion methods can also be used. The specific expansion method and expansion size can be selected according to actual needs and are not limited here.

[0070] In another embodiment of this application, combined with Figure 13 As shown, the inner peripheral wall of the cyclone separation chamber 1101 of the provided dust-gas separation device 100 has an ash outlet 1102 that communicates with the dust collection chamber 1111. The two opposite sides of the ash outlet 1102 along the axial direction of the cyclone separation chamber 1101 are flush with the two end faces of the cyclone separation chamber 1101. In this way, when impurities and dust in the airflow are thrown directly into the ash inlet 1102 along the two end faces of the cyclone separation chamber 1101 under the action of centrifugal force, they will not accumulate at the connection between the ash outlet 1102 and the end face, thereby effectively improving the dust-gas separation efficiency. Specifically, the ash outlet 1102 is a U-shaped structure with its opening facing downwards. This design ensures that the slower airflow on the opposite sides of the cyclone separation chamber 1101 reaches the ash outlet first, thereby ensuring that dust and impurities can smoothly enter the dust collection chamber 1111, reducing the accumulation of dust and impurities in the cyclone separation chamber 1101 and reducing the risk of blockage. The height of the middle part of the ash outlet 1102 ranges from 12mm to 20mm, and the width of the openings on both sides of the ash outlet 1102 ranges from 12mm to 20mm.

[0071] In other embodiments, combined with Figure 14 As shown, the ash outlet 1102 can also be elongated; of course, in other embodiments, it can be combined with... Figure 15As shown, there are multiple ash outlets 1102. For example, there are two ash outlets 1102. The two ash outlets 1102 are distributed along the axial direction of the cyclone separation chamber 1101. In the axial direction of the cyclone separation chamber 1101, the sides of the two ash outlets 1102 that are opposite to each other are flush with the two end faces of the cyclone separation chamber 1101.

[0072] In another embodiment of this application, combined with Figure 3 , Figure 4 and Figure 9 As shown, the housing 10 of the provided dust-gas separation device 100 includes an air outlet plate 121 and a dust cup 11. An air inlet channel 1141 and a dust collection chamber 1111 are formed inside the dust cup 11. The air outlet plate 121 is detachably installed on the dust cup 11 and forms a cyclone separation chamber 1101 with the dust cup 11. A guide plate 122 is installed on the air outlet plate 121, and an air outlet is formed on the air outlet plate 121. The air outlet plate 121 and dust cup 11 of the dust-air separation device 100 can be disassembled, thereby opening the cyclone separation chamber 1101 to facilitate the emptying of dirt inside the cyclone separator. Specifically, when dust, hair, or other dirt accumulates in the cyclone separation chamber 1101, the air outlet plate 121 can be removed from the dust cup 11 to open the cyclone separation chamber 1101, and the dirt inside the cyclone separation chamber 1101 can be poured out directly. There is no need for the user to directly touch the dirt inside the cyclone separator with their hands, making the cleaning operation simple and convenient.

[0073] In this embodiment, the dust-air separation device 100 further includes a first latch 31. One end of the air outlet plate 121 is rotatably connected to the dust cup 11, and the other end of the air outlet plate 121 is connected to the dust cup 11 via the first latch 31. When the cyclone separation chamber 1101 needs cleaning, the cyclone separation chamber 1101 can be opened by simply opening the first latch 31 and flipping the air outlet plate 121. The opening operation of the cyclone separation chamber 1101 is simple, convenient, and easy. Specifically, one end of the air outlet plate 121 is connected to the dust cup 11 via an elastic hinge, and the first latch 31 is an elastic latch. After pressing the elastic latch, the air outlet plate 121 can automatically rotate relative to the dust cup 11, thereby opening the cyclone separation chamber 1101, making the operation simpler and more convenient. Of course, in other embodiments, the dust outlet plate can also be connected to the dust cup 11 by other disassembly methods, such as screw connection, snap connection, etc. The specific connection method can be selected according to the actual situation and is not limited here.

[0074] Combination Figure 3 , Figure 4 and Figure 13As shown, the dust cup 11 includes a dust cup body 111, a bottom cover 112, an air inlet pipe 114, a dust outlet plate 115, and two end plates 113. An air inlet channel 1141 is formed inside the air inlet pipe 114. A dust collection chamber 1111 is formed inside the dust cup body 111. A drain outlet communicating with the dust collection chamber 1111 is formed at the bottom of the dust cup body 111. One side of the bottom cover 112 is rotatably connected to one side of the drain outlet via an elastic hinge, and the other end of the bottom cover 112 is connected to the other end of the drain outlet via a second elastic latch. One side of the drain outlet is sealed, so when the dust collection chamber 1111 needs cleaning, the second elastic latch can be pressed, and the bottom cover 112 can automatically pop open to open the drain outlet, allowing the dirt in the dust collection chamber 1111 to be automatically discharged from the drain outlet; the dust discharge plate 115 is set on the side of the dust cup 11, and the air inlet pipe 114 is inserted into the dust cup body 111 from the other side of the dust cup body 111. Two end plates 113 are installed on opposite sides of the dust cup body 111 and connected to the two ends of the dust discharge plate 115. The upper edge of 5, the sides of the two end plates 113, and the lower sidewall of the air inlet pipe 114 form a dust outlet 1102. The upper end of the air outlet plate 121 is rotatably connected to the dust cup body 111, and the lower end of the air outlet plate 121 is connected to the dust cup body 111 through the second latch 32. When the second latch 32 (such as an elastic latch, etc.) locks the air outlet plate 121 onto the dust cup body 111, the two end plates 113, the air outlet plate 121, the air inlet pipe 114, the dust outlet plate 115, and the dust cup body 111 work together. A cyclone separation chamber 1101 is formed by the enclosure. It should be noted that the exhaust plate 121 is sealed to the end plates 113 and the dust cup body 111 via sealing rings, thus preventing air leakage in the cyclone separation chamber 1101 and improving the suction performance of the vacuum cleaner 1. Furthermore, the end plates 113, air inlet pipe 114, dust outlet plate 115, and dust cup body 111 can be integrated into a single structure using injection molding or 3D printing, thereby reducing production steps and saving production costs. Similarly, the exhaust plate 121, guide plate 122, partition plate 124, and connecting column 123 can also be integrated into an exhaust support 12 using injection molding or 3D printing, thereby reducing production steps and saving production costs.

[0075] In another embodiment of this application, a vacuum cleaner 1 is provided, including the dust and gas separation device 100 described above.

[0076] The vacuum cleaner 1 of this application embodiment, due to the adoption of the aforementioned dust-air separation device 100, has good airflow smoothness, low airflow kinetic energy loss, and high dust-air separation efficiency. This prevents the vacuum cleaner 1 from experiencing filter clogging and sudden drop in suction power. Simultaneously, reducing airflow kinetic energy loss also enables the vacuum cleaner 1 to have better dust collection performance. Since the vacuum cleaner 1 of this application embodiment adopts the technical solutions of all the above embodiments, it also possesses all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0077] The following is in conjunction with the reference appendix Figure 1 and Figure 2 The working process of the vacuum cleaner 1 according to the embodiments of this application is described in detail.

[0078] When the vacuum cleaner 1 is working, the motor 230 is started. The motor 230 drives the impeller 240 to draw air, creating negative pressure in the air duct 201, the cyclone separator 1101, and the air intake channel 1141. This causes the airflow carrying dust and debris to be drawn into the cyclone separator 1101 through the air intake channel 1141. Within the cyclone separator 1101, the airflow undergoes circular motion and is divided into two parts by the guide plate 122. Under the centrifugal force of the rotating airflow, most of the dust and impurities in both parts enter the dust collection chamber 1111, thus removing most of the dust and impurities. After most of the dust and impurities are removed, the two airflow parts then pass through... The first separator 21 and the second separator 22 discharge into the exhaust channel 1221, then into the air duct 201 inside the handheld device 200, and then into the inlet filter 220. At this time, most of the dust and impurities remaining in the airflow will be adsorbed on the inlet filter 220. The airflow passing through the inlet filter 220 enters the outlet filter 250 under the drive of the impeller 240. At this time, a small portion of the dust and impurities remaining in the airflow can be adsorbed by the outlet filter 250 and discharged from the outer casing 210. This ensures that most of the dust and impurities in the airflow are intercepted inside the vacuum cleaner 1, ensuring that the airflow from the vacuum cleaner 1 is clean and avoiding secondary pollution.

[0079] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A dust-gas separation device, comprising a housing, an air inlet channel, a cyclone separation cavity and a dust collection cavity are formed in the housing, the air inlet channel and the dust collection cavity are communicated with the cyclone separation cavity, and an air outlet is formed on the housing; characterized in that: the dust-gas separation device further comprises a first separator and a second separator arranged in the cyclone separation cavity, a guide plate extending along the flow direction of the airflow in the cyclone separation cavity is arranged on the inner circumferential wall of the cyclone separation cavity, the first separator and the second separator are respectively located on opposite sides of the guide plate in the axial direction of the cyclone separation cavity, and the first separator and the second separator are both communicated with the air outlet; the dust-gas separation device further comprises a connecting column, a communication hole is formed in the connecting column, and the first separator and the second separator are installed on opposite ends of the connecting column and are both communicated with the communication hole; the connecting column is installed on the guide plate, an exhaust channel is formed in the interior of the guide plate, and the exhaust channel communicates the air outlet and the communication hole; the dust-gas separation device further comprises a partition plate, the partition plate is installed in the communication hole and divides the communication hole into a first hole section and a second hole section, the first hole section communicates the first separator and the exhaust channel, and the second hole section communicates the second separator and the exhaust channel; the ratio of the projection area of the partition plate in the axial direction of the communication hole to the cross-sectional area of the communication hole is greater than 0.

75. The thickness of the guide plate gradually increases along the flow direction of the airflow in the cyclone separation cavity.

2. The dust-air separation device according to claim 1, characterized in that: A plane perpendicular to the axis of the cyclone separation cavity is an auxiliary plane, an auxiliary straight line is arranged on the auxiliary plane, and the auxiliary straight line is perpendicular to the axis of the air inlet channel; 3. The dust-air separation device according to claim 1, characterized in that: the projection line of the air inlet edge of the guide plate on the auxiliary plane forms an angle with the auxiliary straight line, and the angle ranges from 30° to 120°. The opposite side walls of the air outlet end of the air inlet channel in the axial direction of the cyclone separation cavity gradually move away along the flow direction of the airflow.

4. The dust-air separating device according to any one of claims 1 to 3, characterized in that: The cyclone separation cavity is formed with a dust outlet communicating with the dust collection cavity, and the opposite side edges of the dust outlet in the axial direction of the cyclone separation cavity are flush with the two end faces of the cyclone separation cavity.

5. The dust-air separating device according to any one of claims 1 to 3, characterized in that: The housing comprises an air outlet plate and a dust cup, the dust cup is formed with the air inlet channel and the dust collection cavity; the air outlet plate is detachably installed on the dust cup and forms the cyclone separation cavity together with the dust cup, the guide plate is installed on the air outlet plate, and the air outlet is formed on the air outlet plate.

6. The dust-air separating device according to any one of claims 1 to 3, characterized in that: The dust-gas separation device further comprises a first lock, one end of the air outlet plate is rotatably connected with the dust cup, and the other end of the air outlet plate is connected with the dust cup through the first lock.

7. The dust-air separation device according to claim 6, characterized in that: The dust-gas separation device comprises any one of claims 1-7.

8. A vacuum cleaner characterised by: ​

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