Dust collector

Abstract

The application relates to a dust collector, which comprises a dust bucket, a dust chamber arranged in the dust bucket, a first sidewall of the dust bucket being provided with an air inlet pipeline, and a top of the dust chamber being provided with an air passing channel; a separation assembly, which comprises a filter cartridge arranged in the dust chamber, and the filter cartridge is arranged around the periphery of the air passing channel; the air inlet pipeline comprises a first pipe section and a second pipe section connected in sequence along the fluid flow direction, the first pipe section is mounted on the first sidewall, at least part of the second pipe section is arranged in the dust chamber and located beside the air passing channel, an air outlet is arranged on the peripheral wall of the second pipe section, the sidewall opposite to the second pipe section is a flow guide wall for guiding the fluid entering the first pipe section downwards, and the edge of the periphery of the air outlet away from the first pipe section is located on the flow guide wall. The flow guide wall can guide the fluid flowing out of the air outlet downwards, avoid the fluid from directly forming a turbulent flow area at the air outlet of the air inlet pipeline after entering the bucket body, improve the dust collection efficiency, avoid the sound energy from gathering at the air inlet pipeline, and reduce the noise.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, and in particular to a vacuum cleaner. Background Technology

[0002] A vacuum cleaner is an electrical appliance used to clean dust and debris from the floor.

[0003] Vacuum cleaners typically consist of a dustbin, motor, fan, and filter. The dustbin comprises a barrel with an open top and a lid covering the opening. The barrel and lid together form a dust chamber, where the filter is located. The filter, along with the motor and fan, is mounted on the lid. When the vacuum cleaner is started, the motor drives the fan, which creates negative pressure inside the dustbin. This pressure forces dust and debris from the floor to be cleaned into the dustbin through the inlet duct. After being filtered by the filter inside the dustbin, clean air is exhausted through the exhaust vent.

[0004] After the fluid enters through the air inlet duct, a relatively large turbulent area will be formed at the outlet of the air inlet duct. This turbulent area will experience changes in flow velocity, uneven pressure distribution, and accumulation of sound energy, resulting in low dust collection efficiency and high noise. Summary of the Invention

[0005] Therefore, it is necessary to provide a vacuum cleaner that reduces noise while ensuring suction efficiency.

[0006] This application provides a vacuum cleaner, including a dustbin with a dust chamber inside. A first sidewall of the dustbin has an air inlet duct, and the top of the dust chamber has an air passage. A separation assembly includes a filter cartridge located inside the dust chamber, surrounding the air passage. The air inlet duct includes a first pipe section and a second pipe section connected sequentially along the fluid flow direction. The first pipe section is installed on the first sidewall, and at least a portion of the second pipe section is located inside the dust chamber and beside the air passage. An air outlet is formed on the peripheral wall of the second pipe section. The sidewall of the second pipe section opposite to the air outlet is a guide wall for guiding the fluid entering from the first pipe section downwards. The edge of the air outlet away from the first pipe section is located on the guide wall.

[0007] In one embodiment, the guide wall is an arc-shaped surface that arches away from the inner cavity of the second pipe section.

[0008] In one embodiment, the air outlet has a first position facing the side wall of the dustbin, and the second pipe section is rotatable about its own axis, so that the air outlet can rotate from the second position to the first position. When the air outlet is in the second position, the air outlet faces downward or towards the filter cartridge.

[0009] In one embodiment, the rotation angle of the air outlet from the first position to the second position is γ, and the rotation angle γ satisfies: 0 < γ ≤ 50°.

[0010] In one embodiment, the first tube segment includes a first section for connecting to the suction tube of a vacuum cleaner, the axis of the first section is defined as a first axis, the first axis gradually tilts from top to bottom toward the filter cartridge, and the first axis forms an angle β with the horizontal plane, 0 < β < 10°.

[0011] In one embodiment, the included angle β is 7.5°.

[0012] In one embodiment, along the height direction of the vacuum cleaner, the axis of the second pipe segment is defined as the first axis. In the height direction of the vacuum cleaner, the lowest end of the air passage is located below the first axis, and the distance h1 between the lowest end of the air passage and the first axis satisfies: 0mm < h1 ≤ 95.7mm. The distance h2 between the first axis and the outer bottom surface of the dustbin and the total height H of the dustbin satisfy: h2 / H = 58~73.

[0013] In one embodiment, the spacing h1 is 15 mm and h2 / H = 65.84.

[0014] In one embodiment, the dust bin includes a body with an open top and a lid covering the open top. The body and the lid together form the dust chamber. The first sidewall includes an upper sidewall on the lid and a lower sidewall on the body. The first pipe segment is disposed on the lower sidewall or the upper sidewall.

[0015] In one embodiment, the opening is hexagonal, and the inner periphery of the opening includes a first edge and a second edge arranged at opposite intervals, the second edge being located on the lower sidewall, and the separation assembly being offset from the center of the opening and arranged close to the first edge.

[0016] In one embodiment, the plane containing the opening is defined as a first plane, and the outer periphery of the orthographic projection of the separation component onto the first plane is defined as an outer contour line. The outer contour line is equal to or substantially equal to the minimum distance between the first edge and the two side edges.

[0017] Compared with the prior art, the vacuum cleaner provided in this application has the following advantages: The presence of the guide wall in the vacuum cleaner guides the fluid entering through the inlet of the air inlet duct downwards. Since the edge of the air outlet away from the first pipe section is located on the guide wall, the guide wall can guide the fluid flowing out of the air outlet downwards, preventing the fluid from entering the barrel and directly forming a turbulent area at the air outlet of the air inlet duct, thereby improving the vacuuming efficiency, reducing the impact on the vacuum cleaner's suction efficiency and energy consumption, reducing the risk of larger debris or dust particles directly clogging the filter cartridge, and at the same time preventing sound energy from accumulating at the air inlet duct, thus reducing noise. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology 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.

[0019] Figure 1 This is a perspective view of a vacuum cleaner according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A sectional view;

[0021] Figure 3 for Figure 1 A sectional view of the middle section of the structure;

[0022] Figure 4 for Figure 1 A structural diagram with the rear portion of the barrel removed;

[0023] Figure 5 This is a schematic diagram of the barrel body according to an embodiment of this application;

[0024] Figure 6 for Figure 5 Side view;

[0025] Figure 7 for Figure 6 A sectional view;

[0026] Figure 8 This is a diagram showing the trajectory of airflow within the barrel.

[0027] Figure 9 This is a top view of one embodiment of the present application after removing the bucket lid and the motor;

[0028] Figure 10 for Figure 9 Top view after removing the air intake duct;

[0029] Figure 11 This is a partial structural diagram of the vacuum cleaner in Embodiment 1;

[0030] Figure 12 This is a partial structural diagram of the vacuum cleaner in Embodiment 2;

[0031] Figure 13 This is a partial structural diagram of the vacuum cleaner in Example 3;

[0032] Figure 14 This is a top view of the barrel body, air inlet duct, and separation component after partial assembly in Embodiment 3;

[0033] Figure 15 This is a partial structural diagram of the vacuum cleaner in Example 4;

[0034] Figure 16 This is a top view of the barrel body and the separation component after partial structural assembly in Comparative Example 1;

[0035] Figure 17 This is a top view of the barrel body and the separation component after partial structural assembly in Comparative Example 2;

[0036] Figure 18 This is a partial structural diagram of the vacuum cleaner in Comparative Example 3;

[0037] Figure 19 This is a partial structural diagram of the vacuum cleaner in Comparative Example 4;

[0038] Figure 20 This is a flow path diagram of absolute velocity within a dust chamber according to Embodiment 1 of this application;

[0039] Figure 21 This is an isosurface diagram of the absolute velocity inside the dust chamber in Embodiment 1 of this application;

[0040] Figure 22 This is an isosurface diagram of the relative pressure inside the dust chamber in Embodiment 1 of this application;

[0041] Figure 23 This is an isosurface diagram of the acoustic energy level in the dust chamber of Embodiment 1 of this application;

[0042] Figure 24 This is a flow path diagram of absolute velocity within the dust chamber in Embodiment 2 of this application;

[0043] Figure 25 This is an isosurface diagram of the absolute velocity inside the dust chamber in Embodiment 2 of this application;

[0044] Figure 26 This is an isosurface diagram of the relative pressure inside the dust chamber in Embodiment 2 of this application;

[0045] Figure 27This is an isosurface diagram of the acoustic energy level in the dust chamber of Embodiment 2 of this application;

[0046] Figure 28 This is a flow path diagram of absolute velocity within a dust chamber according to Embodiment 3 of this application;

[0047] Figure 29 This is an isosurface diagram of the absolute velocity inside the dust chamber in Embodiment 3 of this application;

[0048] Figure 30 This is an isosurface diagram of the relative pressure inside the dust chamber in Embodiment 3 of this application;

[0049] Figure 31 This is an isosurface diagram of the acoustic energy level in the dust chamber of Embodiment 3 of this application;

[0050] Figure 32 This is a flow path diagram of absolute velocity within the dust chamber of Embodiment 4 of this application;

[0051] Figure 33 This is an isosurface diagram of the absolute velocity inside the dust chamber in Embodiment 4 of this application;

[0052] Figure 34 This is an isosurface diagram of the relative pressure inside the dust chamber in Embodiment 4 of this application;

[0053] Figure 35 This is an isosurface diagram of the acoustic energy level in the dust chamber of Embodiment 4 of this application;

[0054] Figure 36 This is a flow path diagram of absolute velocity within the dust chamber of Embodiment 5 of this application;

[0055] Figure 37 This is an isosurface diagram of the absolute velocity inside the dust chamber in Embodiment 5 of this application;

[0056] Figure 38 This is an isosurface diagram of the relative pressure inside the dust chamber in Embodiment 5 of this application;

[0057] Figure 39 This is an isosurface diagram of the acoustic energy level in the dust chamber of Embodiment 5 of this application;

[0058] Figure 40 This is a flow path diagram of absolute velocity within the dust chamber of Comparative Example 1 of this application;

[0059] Figure 41 This is an isosurface plot of the absolute velocity inside the dust chamber of Comparative Example 1 of this application;

[0060] Figure 42 This is a relative pressure isosurface diagram of the dust chamber in Comparative Example 1 of this application;

[0061] Figure 43This is an isosurface diagram of the acoustic energy level in the dust chamber of Comparative Example 1 of this application;

[0062] Figure 44 This is a flow path diagram of absolute velocity within the dust chamber of Comparative Example 2 of this application;

[0063] Figure 45 This is an isosurface plot of the absolute velocity inside the dust chamber of Comparative Example 2 of this application;

[0064] Figure 46 This is a relative pressure isosurface diagram of the dust chamber in Comparative Example 2 of this application;

[0065] Figure 47 This is an isosurface diagram of the acoustic energy level in the dust chamber of Comparative Example 2 of this application;

[0066] Figure 48 This is a flow path diagram of absolute velocity within the dust chamber of Comparative Example 3 of this application;

[0067] Figure 49 This is an isosurface plot of the absolute velocity inside the dust chamber of Comparative Example 3 of this application;

[0068] Figure 50 This is a relative pressure isosurface diagram of the dust chamber in Comparative Example 3 of this application;

[0069] Figure 51 The acoustic energy level isosurface diagram of the dust chamber in Comparative Example 3 of this application;

[0070] Figure 52 This is a flow path diagram of absolute velocity within the dust chamber of Comparative Example 4 of this application;

[0071] Figure 53 This is an isosurface plot of the absolute velocity inside the dust chamber of Comparative Example 4 of this application;

[0072] Figure 54 This is a relative pressure isosurface diagram of the dust chamber in Comparative Example 4 of this application;

[0073] Figure 55 This is an isosurface diagram of the acoustic energy level in the dust chamber of Comparative Example 4 of this application.

[0074] Reference numerals: 1. Dust bin; 10. Dust chamber; 11. Bin body; 110. Opening; 1100. Side; 1101. First edge; 1102. Second edge; 1103. Third edge; 1104. Fourth edge; 1105. First plane; 111. Lower sidewall; 112. Fluid region; 1121. First chaotic zone; 1122. First slow-flow zone; 1123. Second slow-flow zone; 1124. Second chaotic zone; 114. Guide slope; 1141. Side edge; 12. Bin lid; 121. Upper sidewall; 13. Air inlet duct; 131. First pipe section; 1310. First section; 1311. First shaft Line; 1312, Second section; 132, Second pipe section; 133, Air outlet; 134, First axis; 135, Guide wall; 14, Exhaust duct; 15, Airflow area; 151, Circulation area; 152, Turbulent area; 153, First dividing line; 154, Second dividing line; 16, First side wall; 17, Third side wall; 18, Fourth side wall; 2, Separation component; 20, Outer contour line; 201, Second axis; 21, Filter cartridge; 22, Air guide hood; 221, Air passage; 23, Fan; 24, Motor; 25, Guide channel; 3, Casters; 4, Mounting cavity; 51, First dashed line; 52, Second dashed line. Detailed Implementation

[0075] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0076] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," "side," "top," "bottom," and similar expressions used in this application's specification are merely for describing various exemplary structural parts and elements of this application. However, their use herein is for illustrative purposes only and is determined based on the exemplary orientations shown in the accompanying drawings, and does not represent the only possible implementation. Since the embodiments disclosed in this application can be arranged in different orientations, these terms indicating orientation are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0077] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0079] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0080] like Figures 1-13 As shown, this application discloses a vacuum cleaner. The vacuum cleaner includes a dustbin 1 and a separation assembly 2. Wherein, as... Figures 1-3 As shown, the dust bin 1 has a dust chamber 10 inside, and the first side wall 16 of the dust bin 1 is provided with an air inlet duct 13. The top of the dust chamber 10 is provided with an air passage 221 that communicates with the dust chamber 10. Specifically, the dust bin 1 includes a bin body 11 with an opening 110 at the top and a bin lid 12 covering the opening 110. The bin body 11 and the bin lid 12 enclose the dust chamber 10, and the air passage 221 is located on the bin lid 12.

[0081] like Figure 2 , Figure 3 and Figure 10As shown, the separation assembly 2 is used to separate at least a mixture of air and dust, and includes a filter cartridge 21 installed on the top of the dust chamber 10. The filter cartridge 21 surrounds the periphery of the air passage 221 and is located upstream of the air passage 221 along the fluid flow direction. Furthermore, the separation assembly 2 also includes an air guide hood 22 and a fan 23. The air guide hood 22 is installed on the inner bottom wall of the cover 12, and the air guide hood 22 and the cover 12 together form a mounting cavity 4. The fan 23 is located within the mounting cavity 4, and the air passage 221 is located at the bottom end of the air guide hood 22 and communicates with the air inlet of the fan 23. The filter cartridge 21 is disposed on the air guide hood 22 and is arranged vertically. The cross-section of the filter cartridge 21 is circular, and the bottom wall of the filter cartridge 21 is a closed end.

[0082] Furthermore, such as Figure 2 and Figure 3 As shown, the aforementioned air guide shroud 22 is a frustum-shaped structure with a cross-sectional area that gradually decreases from top to bottom. Therefore, the outer circumferential surface of the air guide shroud 22 guides the fluid downwards, causing the fluid to flow around the filter cartridge 21. A flow channel 25 is formed between the fan 23 and the inner circumferential surface of the air guide shroud 22, and the outlet of the fan 23 is connected to the exhaust channel 14 through the flow channel 25. The lid 12 is provided with an exhaust channel 14 connected to the outlet of the fan 23. Along the airflow path, the fan 23 is located downstream of the filter cartridge 21 and upstream of the exhaust channel 14.

[0083] It is understandable that after the fluid enters the dust chamber 10 through the air inlet pipe 13, the fluid moves around the peripheral wall of the filter cartridge 21. The airflow filtered by the peripheral wall of the filter cartridge 21 enters the air guide hood 22 through the air channel 221, and enters the fan 23 under the guidance of the flow guide channel 25. Then it is discharged through the fan 23 and the exhaust channel 14 in sequence.

[0084] It should be noted that the fan 23 can rotate around its own axis under the drive of the motor 24, and at least part of the motor 24 is located inside the mounting cavity 4 and above the fan 23.

[0085] To facilitate moving the vacuum cleaner, casters 3 are installed at the bottom of the dustbin 1.

[0086] like Figures 1-3 As shown, the air inlet duct 13 includes a first pipe section 131 and a second pipe section 132 connected sequentially along the fluid flow direction. The first pipe section 131 is installed on the first side wall 16. At least part of the second pipe section 132 is located in the dust chamber 10 and is located beside the air passage 221. An air outlet 133 is provided on the peripheral wall of the second pipe section 132. The side wall of the second pipe section 132 opposite to the air outlet 133 is a guide wall 135 for guiding the fluid flowing in through the first pipe section 131 downward. The edge of the air outlet 133 on the side away from the first pipe section 131 is located on the guide wall 135.

[0087] Understandably, the presence of the guide wall 135 guides the fluid entering through the inlet of the air inlet duct 13 downwards. Since the edge of the outlet 133 away from the first pipe section 131 is located on the guide wall 135, the guide wall 135 can guide the fluid flowing out of the outlet 133 downwards, preventing the fluid from directly forming a turbulent area at the outlet 133 of the air inlet duct 13 after entering the barrel 11. This improves dust collection efficiency, reduces the impact on the vacuum cleaner's suction efficiency and energy consumption, reduces the risk of larger debris or dust particles directly clogging the filter cartridge 21, and at the same time prevents sound energy from accumulating at the air inlet duct 13, thus reducing noise.

[0088] It should be noted that "for guiding the fluid flowing in through the first pipe section 131 downward" includes, but is not limited to, vertical downward, and also includes inclined downward, as long as it can make the airflow flow downward.

[0089] The direction in which the fluid entering the air inlet duct 13 moves axially along the second pipe section 132 is defined as the first direction M. The aforementioned guide wall 135 is also used to guide the fluid along the first direction M towards the air outlet 133. Furthermore, the guide wall 135 is an arc-shaped surface that arches away from the inner cavity of the second pipe section 132, as detailed in [reference needed]. Figure 3 As shown. The presence of the arc-shaped surface can better guide the fluid in the second pipe section 132 downwards, and the fluid entering the dust chamber 10 flows downwards under the guidance of the outer wall of the arc-shaped surface, further reducing the possibility of fluid accumulation at the air outlet 133, which is beneficial to reducing the noise at the air outlet 133.

[0090] It should be noted that, as Figure 1 As shown, the first sidewall 16 includes an upper sidewall 121 located on the lid 12 and a lower sidewall 111 located on the body 11, and the first pipe section 131 is disposed on the upper sidewall 121.

[0091] like Figure 2 , Figure 3 , Figure 11 , Figure 12 and Figure 14 As shown, the air outlet 133 has a first position facing the side wall of the dust bin 1. That is, the high-speed airflow (fluid) flowing out of the air outlet 133 can be blown out along the side wall of the dust bin, forming a high-speed rotating airflow within the dust chamber 10. In this embodiment, the second pipe section 132 can rotate about its own axis, thereby allowing the air outlet 133 to rotate from the second position to the first position. Figure 2 , Figure 12 , Figure 18 and Figure 19As shown, when the air outlet 133 is in the second position, the air outlet 133 faces downwards or towards the filter cartridge 21. In this way, the position of the air outlet 133 can be adjusted by rotating the second pipe section 132, thereby better forming a high-speed rotating airflow in the dust chamber 10 while reducing sharp turns and sudden changes in flow direction, and adjusting the length of the airflow path in the dust chamber 10, thereby reducing the energy loss of the airflow in the dust chamber 10.

[0092] In one embodiment, such as Figure 12 and Figure 13 As shown, the first pipe section 131 is disposed on the lower side wall 111. The first pipe section 131 and the second pipe section 132 can be a single piece, thus the position of the air outlet 133 can be adjusted by rotating the air inlet pipe 13. Specifically, the first pipe section 131 and the second pipe section 132 are arranged coaxially.

[0093] In another embodiment, the first pipe segment 131 is fixed to the first side wall 16, while the second pipe segment 132 rotates relative to the first pipe segment 131, thereby adjusting the position of the air outlet 133 on the second pipe segment 132.

[0094] like Figure 13 As shown, the rotation angle γ of the air outlet 133 from the first position to the second position satisfies: 0 < γ ≤ 50°. In one embodiment, γ = 30° or γ = 45°. In this embodiment, γ = 50°.

[0095] like Figure 3 , Figure 11 , Figure 12 and Figure 13 As shown, the axis of the second pipe segment 132 is defined as the first axis 134. It should be noted that the first axis 134 is the center of the second pipe segment 132, that is, located at the center of the length direction of the second pipe segment 132. The first axis 134 is located on the axis of the second pipe segment 132. Along the height direction of the vacuum cleaner, the lowest point of the air passage 221 is located below the first axis 134, and the distance h1 between the lowest point of the air passage 221 and the first axis 134 satisfies: 0mm < h1 ≤ 95.7mm. The distance h2 between the first axis 134 and the outer bottom surface of the dustbin 1 and the total height H of the dustbin 1 satisfy: h2 / H = 58~73. In one embodiment, as... Figure 3 , Figure 12 and Figure 13 As shown, the spacing h1 is 15mm, and h2 / H = 65.84. This is illustrative; h2 / H could also be 58 or 73, and h1 could be 95.7mm. See [reference needed]. Figure 11 and Figure 18 As shown.

[0096] like Figure 2As shown, the first pipe section 131 includes a first segment 1310 for connecting to the suction hose of a vacuum cleaner. The axis of the first segment 1310 is defined as the first axis 1311, which gradually slopes downwards towards the filter cartridge 21, and the angle β between the first axis 1311 and the horizontal plane is 0 < β < 10°. This makes it convenient for users to insert or attach the suction hose to the first pipe section 131, and also saves more effort.

[0097] In this embodiment, the included angle β is 7.5°. Illustratively, the included angle β could also be 8°, 6°, or 7°, etc.

[0098] like Figure 1 and Figure 2 As shown, the direction perpendicular to the first sidewall 16 is defined as the second direction N. The inner cavity of the barrel 11 has a fluid region 112 located below the air outlet 133, surrounding the filter cartridge 21. The fluid region 112 is located... Figure 2 Below the first dotted line 51 inside the middle barrel 11, the air outlet 133 is located above the first dotted line 51. For example... Figure 1 , Figure 5 and Figure 7 As shown, the fluid region 112 includes a first chaotic region 1121 and a first slow-flow region 1122 arranged sequentially along the second direction N. The first chaotic region 1121 is arranged close to the first sidewall 16, and a guide slope 114 is provided at the position where the first chaotic region 1121 and the first slow-flow region 1122 are connected. The guide slope 114 gradually slopes from top to bottom toward the first chaotic region 1121.

[0099] Understandably, the guide slope 114 between the first chaotic zone 1121 and the first slow-flow zone 1122 creates a clear boundary trajectory for the fluid movement rubbing against the perimeter of the barrel 11. This serves to release pressure in the upper part of the first chaotic zone 1121, facilitate airflow reversal, and allow fluid to move and flow back from the first chaotic zone 1121 into the first slow-flow zone 1122. The guide slope 114 gradually slopes downwards towards the first chaotic zone 1121, increasing the space within the first chaotic zone 1121. This helps to release the positive pressure in the first chaotic zone 1121 to some extent, enhancing the vacuum cleaner's suction efficiency. The guide slope 114 also expands the space for fluid to flow from the first chaotic zone 1121 to the first slow-flow zone 1122, reducing the compression of fluid movement between the two zones and lowering the airflow noise energy within the barrel 11, thus achieving a better noise reduction effect.

[0100] like Figure 7 and Figure 8As shown, the inner peripheral wall of the dust chamber 10 forms a second slow-flow zone 1123 and a second turbulent zone 1124. The second slow-flow zone 1123 is located above the fluid region 112 and, together with the first slow-flow zone 1122, forms a circulating cavity. The second turbulent zone 1124 is located below the fluid region 112 and, together with the first turbulent zone 1121, forms a turbulent cavity. Figure 6 It can be seen that the inner cavity of the barrel 11 is divided into a circulating cavity and a turbulent cavity by the second dotted line 52, which is shaped like a Z. See details. Figure 8 The dark blue area represents the turbulent flow cavity, and the light blue area represents the circulation cavity. Figure 8 The arrows inside the middle barrel 11 indicate the flow trajectory of the fluid. The heights of the second slow-flow zone 1123 and the second turbulent zone 1124 are equal or substantially equal. The aforementioned first turbulent zone 1121 and second turbulent zone 1124 constitute the turbulent flow region.

[0101] Understandably, by increasing the space for turbulent airflow and the flow space surrounding the filter cartridge 21, the sound energy of the airflow within the barrel 11 is reduced, resulting in a better noise reduction effect.

[0102] In addition, such as Figure 9 and Figure 10 As shown, the opening 110 is hexagonal, and its inner periphery includes a first edge 1101 and a second edge 1102 arranged at relatively intervals along the second direction N. The second edge 1102 and the first edge 1101 are arranged sequentially along the second direction N. Figure 5 , Figure 9 and Figure 10 As shown, the second edge 1102 is located on the lower sidewall 111, and the separation component 2 is offset from the center of the opening 110 and arranged close to the first edge 1101.

[0103] Understandably, since the separation component 2 is offset from the center of the opening 110 and arranged close to the first edge 1101, while the air inlet duct 13 is located on the side where the second edge 1102 is located, the space for airflow to enter the dust chamber 10 after passing through the air inlet duct 13 is inevitably increased. That is, the minimum distance between the second edge 1102 and the separation component 2 is greater than the minimum distance between the first edge and the separation component 2, which reduces the possibility of dust particles being sucked away directly without being separated, ensures that particles with a high specific gravity are effectively separated and settled, and makes the turbulent airflow expand more smoothly, avoids the generation of violent eddies in the turbulent airflow, and slows down the accumulation of sound energy at the air outlet 133 of the air inlet duct 13, which is conducive to reducing noise.

[0104] Furthermore, the periphery of the aforementioned opening 110 includes two side edges 1100 arranged at relative intervals along a third direction P, the third direction P forming an angle with the second direction N, and the third direction P being the length direction of the first edge 1101. Figure 6 , Figure 9 and Figure 10 As shown, both sides 1100 include a third edge 1103 and a fourth edge 1104. The length of the third edge 1103 is less than the length of the fourth edge 1104. The side wall of the dust bin 1 corresponding to the third edge 1103 is defined as the third side wall 17, and the side wall of the dust bin 1 corresponding to the fourth edge 1104 is defined as the fourth side wall 18. The fourth side wall 18 is arranged close to the second edge 1102.

[0105] like Figure 3 , Figure 11 and Figure 12 As shown, when the air outlet 133 is in the first position, the air outlet 133 faces the fourth side wall 18. The two side edges 1141 of the guide slope 114, which are arranged at intervals along the length direction of the first edge 1101, are the connection points where the third side wall 17 and the fourth side wall 18 are connected on the barrel body 11. This facilitates the formation of the guide slope 114.

[0106] like Figure 9 and Figure 10 As shown, the plane containing the opening 110 is defined as the first plane 1105, and the outer periphery of the orthographic projection of the separation component 2 onto the first plane 1105 is defined as the outer contour line 20. Specifically, the outer periphery of the orthographic projection of the air guide shroud 22 onto the first plane 1105 is the aforementioned outer contour line 20. The minimum distance between the outer contour line 20 and the first edge 1101 and the two side edges 1100 is equal or substantially equal.

[0107] It is understandable that since the minimum distance between the outer contour line 20 and the first edge 1101 and the two side edges 1100 are equal or basically equal, it is possible to ensure that the fluid cross-sectional area changes as little as possible around the space surrounding the separation component 2. That is, the change in the space through which the airflow passes around the separation component 2 is relatively small. This is beneficial to reduce the absolute flow velocity and reduce the flow velocity change when the airflow passes through, making the flow velocity around the separation component 2 more stable and uniform. This reduces the increase in relative pressure at the corresponding position on the inner wall of the barrel 11 and also helps to reduce the uneven distribution of sound energy generated when the airflow passes around the separation component 2, thereby achieving a better noise reduction effect without reducing the airflow.

[0108] It should be noted that "basically equal" means that the size difference is about 1mm.

[0109] In addition, the minimum distance between the outer contour line 20 and the first edge 1101 is a, and the minimum distance between the outer contour line 20 and the second edge 1102 is A, where A / a = 2~2.24.

[0110] Understandably, when A / a = 2~2.24, it can reduce the accumulation of sound energy at the outlet 133 of the air inlet duct 13, and at the same time avoid the sudden increase in fluid velocity drawn into the filter cartridge 21 from the side of the separation component 2 away from the air inlet duct 13, thus preventing uneven fluid velocity distribution and indirectly causing sound energy concentration at that location. This reduces the absolute velocity of the airflow around the separation component 2, making the distribution of sound energy generated by the airflow around the separation component 2 more uniform, achieving a better noise reduction effect. When A / a is too large, it greatly reduces the airflow velocity at the outlet 133 of the air inlet duct 13. Although this reduces noise, it also reduces the airflow around the separation component 2, reducing separation capacity. When A / a is too small, sound energy accumulates at the outlet 133 of the air inlet duct 13, increasing noise. The hexagonal shape of the opening 110 reduces the change in fluid flow area around the separation component 2, making the fluid velocity around the separation component 2 more stable and reducing the sound energy caused by fluid movement within the barrel 11.

[0111] In addition, such as Figure 9 and Figure 10 As shown, an airflow region 15 is formed between the outer peripheral wall of the upper region of the separation component 2 and the inner peripheral wall of the barrel 11. The airflow region 15 is divided into a circulating region 151 and a turbulent region 152 along the circumference of the separation component 2. The turbulent region 152 is located on the side where the second edge 1102 is located and is arranged corresponding to the lower side wall 111. It should be noted that the fluid entering the dust chamber 10 through the air inlet duct 13 forms the aforementioned airflow region 15 in the upper part of the dust chamber 10. When the fluid flows downward, the aforementioned circulating cavity and turbulent cavity are formed in the dust chamber 10.

[0112] like Figure 9 and Figure 10 As shown, the boundary lines between the turbulent flow region 152 and the circulation region 151 are defined as the first boundary line 153 and the second boundary line 154, respectively. The first boundary line 153, the second boundary line 154, and the second edge 1102 enclose the aforementioned turbulent flow region 152. The axis of the outer contour line 20 is defined as the second axis 201. The extensions of the first boundary line 153 and the second boundary line 154 on the orthographic projection of the first plane 1105 intersect, and the intersection point is arranged close to the second axis 201. The first boundary line 153 and the second boundary line 154 are both inclined lines that form an acute angle α with the second edge 1102.

[0113] Understandably, both the first dividing line 153 and the second dividing line 154 are inclined lines. Correspondingly, an inclined plane is formed between the turbulent flow zone 152 and the circulating flow zone 151. The existence of the inclined plane makes the fluid movement that rubs against the peripheral wall of the barrel 11 have a clear dividing trajectory, which plays a role in releasing pressure in the turbulent flow zone 152 and reversing airflow, as well as reversing airflow from the turbulent flow zone 152 into the circulating flow zone 151, thus expanding the space for the fluid to flow from the turbulent flow zone 152 to the circulating flow zone 151. This reduces the compression of fluid movement between the turbulent flow zone 152 and the circulating flow zone 151. The longer turbulent flow zone 152 increases the volume of the turbulent flow zone 152, which can release the positive pressure in the turbulent flow zone 152 to a certain extent, enhance the vacuum cleaner's suction efficiency, and at the same time ensure that the fluid cross-sectional area around the space surrounding the filter cartridge 21 changes as little as possible, making the flow velocity around the circulating flow zone 151 more stable. In this way, the sound energy caused by the fluid movement inside the barrel 11 is reduced.

[0114] The connection between any two adjacent sidewalls of the barrel body 11 is a smooth transition. Similarly, the connection between any two adjacent edges of the inner periphery of the opening 110 is also a smooth transition. This allows the airflow to flow more smoothly along the inner periphery of the barrel body 11, which helps reduce noise. The aforementioned spacing a = 67mm~68mm.

[0115] Under the premise that the shape and size of the dust bin 1 and the structure and setting position of the separation component 2 are the same, the following embodiments one to five will describe the changes in the height of the first axis 134 and the changes in the position of the air outlet 133 in the circumferential direction.

[0116] Example 1:

[0117] like Figure 11 As shown, the first pipe section 131 is installed on the upper side wall 121, and the axis of the first pipe section 131 is the first axis 1311. The first axis 134 is located on the first axis 1311, that is, the first pipe section 131 and the second pipe section 132 are arranged coaxially. The distance h1 between the first axis 134 and the lowest end of the air passage 221 is 95.7 mm. The distance h2 between the first axis 134 and the outer bottom surface of the bin 11 is 319 mm, and the total height H of the dust bin 1 is 363 mm. The air outlet 133 is in the first position, that is, the air outlet 133 faces the fourth side wall 18.

[0118] Example 2:

[0119] like Figure 12As shown, this embodiment has the same structure as the air inlet duct in Embodiment 1 above, with the only difference being that the first pipe section 131 is installed on the lower side wall 111. The distance h1 between the first axis 134 and the lowest end of the air passage 221 is 15mm. The distance h2 between the first axis 134 and the outer bottom surface of the barrel body 11 is 239mm. The air outlet 133 is in the second position, that is, the air outlet 133 faces downward.

[0120] Example 3:

[0121] like Figure 13 As shown, this embodiment has the same structure as the air inlet duct 13 in Embodiment 2 above, except that the air outlet 133 is in the first position. By rotating the air inlet duct 13 as a whole, the air outlet 133 can be rotated from the second position in Embodiment 2 to the first position, and the rotation angle γ is 50°. The outer peripheral wall of the air inlet duct 13 is sealed to the first side wall 16.

[0122] Example 4:

[0123] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 15 As shown, the first pipe segment 131 of this embodiment is located on the upper sidewall 121. The only difference from Embodiment 1 is that the structure of the air inlet pipe 13 in this embodiment is different from that in Embodiment 1. Specifically, the first pipe segment 131 is basically L-shaped and includes a first section 1310 installed on the upper sidewall 121 and a vertically arranged second section 1312. The second pipe segment 132 is vertically arranged and installed on the second section 1312. Both the second pipe segment 132 and the second section 1312 are located inside the dust chamber 10. The second pipe segment 132 and the second section 1312 are fitted together and sealed together. The second pipe segment 132 rotates relative to the second section 1312 around its own axis. The first axis 134 is located below the first pipe segment 131, that is, below the first axis 1311. In other words, the position of the inlet of the air inlet pipe 13 remains unchanged, only the position of the outlet 133 of the air inlet pipe 13 is lowered. In this embodiment, the guide wall 135 is inclined from top to bottom towards the air outlet 133.

[0124] In addition, in this embodiment, the first axis 134 is located inside the barrel body 11 and on the axis of the second segment 1312. The distance h1 between the first axis 134 and the lowest end of the air passage 221 is 15mm, and the air outlet 133 is in the first position.

[0125] Example 5:

[0126] like Figure 9As shown, the minimum distance between the outer contour line 20 and the first edge 1101 is 67mm, and the minimum distance between the outer contour line 20 and the two side edges 1100 is 68mm. The minimum distance between the outer contour line 20 and the second edge 1102 is 150mm. In this case, A / a = 2.24, or A / a = 2.2. The air inlet duct 13 of Embodiment 5 has the same structure as the air inlet duct 13 of Comparative Example 3 below, and the air outlets 133 all face downwards.

[0127] Based on the air inlet duct 13 of Embodiment 5, and with the same shape of dust bin 1, structure of separation component 2 and setting position, the following describes the size changes of dust bin 1 in Embodiments 6 to 7.

[0128] Example 6:

[0129] The minimum distance between the outer contour line 20 and the first edge 1101 is 67.5mm, and the minimum distance between the outer contour line 20 and the second edge 1102 is 135mm, i.e., A / a=2.

[0130] Example 7:

[0131] like Figure 10 As shown, the minimum distance a between the first edge 1101, the two sides 1100 and the outer contour line 20 is 68mm, and the minimum distance A between the outer contour line 20 and the second edge 1102 is 150mm.

[0132] Comparative Example 1:

[0133] like Figure 16 As shown, the minimum distance between the outer contour line 20 and the first edge 1101 is 67mm, and the minimum distance between the outer contour line 20 and the second edge 1102 is 150mm. The minimum distance between the two sides 1100 and the outer contour line 20 is 51mm.

[0134] Comparative Example 2:

[0135] like Figure 17 As shown, the minimum distance between the two sides 1100 and the outer contour line 20 is 68mm. The difference between Comparative Example 2 and Embodiment 1 is that the separating component 2 moves closer to the first edge 1101, that is, the minimum distance between the outer contour line 20 and the first edge 1101 is 42mm, and the minimum distance between the outer contour line 20 and the second edge 1102 is 175mm.

[0136] Comparative Examples 1, 2 and 5 are identical in shape of the separation component 2, air inlet duct 13 and dust bin 1, height of air inlet duct 13 and position of air outlet 133, the only difference being that the values ​​of spacing A and spacing a are different.

[0137] Comparative Example 3:

[0138] like Figure 18 As shown, the air inlet duct 13 of Comparative Example 3 has the same structure as the air inlet duct 13 of Embodiment 1 above. The only difference between Comparative Example 3 and Embodiment 1 is the position of the air outlet 133 in the circumferential direction. In Comparative Example 3, the air outlet 133 is in the second position, that is, the air outlet 133 opens downwards. The rotation angle γ of the air outlet 133 from the second position to the first position in Embodiment 1 is 50°. The height of the air inlet duct 13 of Comparative Example 3 is slightly lower than the height of the air inlet duct 13 of Embodiment 5.

[0139] Comparative Example 4:

[0140] like Figure 19 As shown, the only difference between Comparative Example 4 and Embodiment 4 above is that the air outlet 133 is in the second position, that is, the air outlet 133 faces the filter cartridge 21. The air outlet 133 is rotated from the second position of Comparative Example 4 to the first position of Embodiment 4, and the rotation angle γ is 50°.

[0141] See Figures 20-55 As shown, CFD (Computational Fluid Dynamics) simulations were performed on Examples 1 to 5 and Comparative Examples 1 to 4.

[0142] When meeting the maximum flow rate requirement (approximately 0.04 m³ / s, with an ambient flow rate of 1 atm), the component consisting of... Figure 40 and Figure 41 It can be seen that the maximum absolute velocity inside dust chamber 10 in Comparative Example 1 is 31.342 m / s. From... Figure 42 It can be seen that the minimum relative pressure inside the dust chamber 10 of Comparative Example 1 is -1100.21 Pa. Figure 43 It can be seen that the acoustic energy (i.e., sound energy) in the dust chamber 10 of Comparative Example 1 is 3.81dB~41.86dB.

[0143] Depend on Figure 44 and Figure 45 It can be seen that the maximum absolute velocity inside dust chamber 10 in Comparative Example 2 is 32.043 m / s. From... Figure 46 It can be seen that the minimum relative pressure inside the dust chamber 10 of Comparative Example 2 is -1008.43 Pa. Figure 47 It can be seen that the acoustic energy in the dust chamber 10 of Comparative Example 2 is 4.82dB~43.37dB.

[0144] Depend on Figure 36 and Figure 37 It can be seen that the maximum absolute velocity in Example 5 is 30.545 m / s. (From...) Figure 38It can be seen that the minimum relative pressure inside the dust chamber 10 in Example 5 is -1025.78 Pa, which is determined by... Figure 39 It can be seen that the acoustic energy in the dust chamber 10 of Example 5 is 2.71dB~29.81dB.

[0145] Therefore, it can be seen that the maximum flow rate (maximum absolute velocity) of Example 5, Comparative Example 1 and Comparative Example 2 are required to be similar (e.g., maximum difference ≤ 3.5 m / s), and the relative negative pressure (i.e. relative pressure) of the inner wall of the barrel 11 is required to be similar (e.g., maximum difference ≤ 65.4 Pa), that is, they all maintain a large suction force. However, compared with Comparative Example 1 and Comparative Example 2, the maximum sound energy in the dust chamber 10 of Example 5 is significantly reduced. Obviously, Example 5 achieves a better noise reduction effect.

[0146] Depend on Figure 48 and Figure 49 It can be seen that the maximum absolute velocity of the fluid in dustbin 1 of Comparative Example 3 is 25.208 m / s; from Figure 50 It can be seen that the minimum relative pressure of dustbin 1 in Comparative Example 3 is -1006.24 Pa; from Figure 51 It can be seen that the maximum sound energy of dustbin 1 in Comparative Example 3 is 29.81 dB.

[0147] Depend on Figure 52 and Figure 53 It can be seen that the maximum absolute velocity of the fluid in dustbin 1 of Comparative Example 4 is 25.751 m / s; from Figure 54 It can be seen that the minimum relative pressure inside dustbin 1 in Comparative Example 4 is -999.7 Pa; from Figure 55 It can be seen that the maximum sound energy in the dustbin 1 of Comparative Example 4 is 52.85 dB.

[0148] Depend on Figure 20 and Figure 21 It can be seen that the maximum absolute velocity of the internal fluid in the dust chamber 10 of Example 1 is 22.904 m / s; from Figure 22 It can be seen that the minimum relative pressure in dust chamber 10 of Example 1 is -969.04 Pa; from Figure 23 It can be seen that the maximum acoustic energy in the dust chamber 10 of Example 1 is 22.61 dB.

[0149] Depend on Figure 24 and Figure 25 It can be seen that the maximum absolute velocity of the fluid in the dust chamber 10 of Example 2 is 23.117 m / s; from Figure 26 It can be seen that the minimum relative pressure in dust chamber 10 of Example 2 is -978.63 Pa; from Figure 27 It can be seen that the maximum sound energy in the dust chamber 10 of Example 2 is 17.36 dB.

[0150] Depend on Figure 28and Figure 29 It can be seen that the maximum absolute velocity of the fluid in the dust chamber 10 of the above embodiment 3 is 22.966 m / s; from Figure 30 It can be seen that the minimum relative pressure in the dust chamber 10 of Example 3 is -911.54 Pa; from Figure 31 It can be seen that the maximum sound energy in the dust chamber 10 of Example 3 is 19.65 dB.

[0151] Depend on Figure 32 and Figure 33 It can be seen that the maximum absolute velocity of the fluid in the dust chamber 10 of Example 4 is 29.873 m / s; from Figure 34 It can be seen that the minimum relative pressure in dust chamber 10 of Example 4 is -1046.64 Pa; from Figure 35 It can be seen that the acoustic energy in the dust chamber 10 of Example 4 is 23.38 dB.

[0152] As can be seen from the above, in Example 1, compared with Comparative Example 3, only the air outlet 133 is rotated from the second position to the first position. Although the minimum relative pressure is slightly increased compared with Comparative Example 3, the maximum speed is better and the sound energy is reduced, thus achieving a better noise reduction effect.

[0153] Example 2 differs from Comparative Example 3 only in that the installation height of the air inlet duct 13 is reduced. Compared to Comparative Example 3, although the minimum relative pressure is slightly increased, the sound energy is lower, thus achieving a better noise reduction effect.

[0154] Compared to Comparative Example 3, Example 3 lowers the height of the air inlet duct 13 and adjusts the circumferential position of the air outlet. Example 3 exhibits better maximum speed and lower sound energy compared to Comparative Example 3, thus achieving better noise reduction. Example 4, compared to Comparative Example 3, maintains the inlet position of the air inlet duct 13 but lowers the position of the air outlet and changes its circumferential position. Compared to Comparative Example 3, Example 4 has a lower minimum relative pressure and lower sound energy, resulting in better suction and a better noise reduction effect.

[0155] Furthermore, compared to Example 2, Example 3 only changed the position of the air outlet in the circumferential direction. Although both the acoustic energy and minimum relative pressure are slightly increased compared to Example 2, Example 3 shows better maximum speed and better pressure uniformity within the container. See details... Figure 24 and Figure 28This reduces the energy consumption of the vacuum cleaner motor and extends the service life of motor 24. Compared to Comparative Example 4, Embodiment 4 only changes the position of the air outlet in the circumferential direction. Although the maximum absolute speed increases slightly compared to Comparative Example 4, the relative pressure and sound energy are reduced, resulting in better suction and noise reduction.

[0156] In summary, the sound energy of Examples 1 to 4 is lower than that of Comparative Example 3. In other words, Examples 1 to 4 have better noise reduction effects compared to Comparative Example 3. This means that reducing the height of the air inlet duct 13 and / or changing the circumferential position of the air outlet can achieve good noise reduction or reduce the vacuum cleaner's energy consumption, or slightly increase the minimum relative pressure while maintaining noise reduction capabilities.

[0157] It should be noted that, Figures 20-51 In this system, X, Y, and Z represent the coordinate system, and C is the origin of the coordinate system (not shown in the figure). XC, YC, and ZC represent the three directions of the coordinate system. The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of this application and are described in a relatively specific and detailed manner, but they should not be construed as limiting the scope of the patent application. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A vacuum cleaner, comprising: A dust bin, wherein a dust chamber is provided inside the dust bin, and an air inlet duct is provided on the first side wall of the dust bin, and an air passage is provided on the top of the dust chamber; A separation assembly, the separation assembly including a filter cartridge located in the dust chamber, the filter cartridge surrounding the periphery of the air passage; The air inlet duct is characterized in that it includes a first pipe section and a second pipe section connected sequentially along the fluid flow direction. The first pipe section is installed on the first side wall, and at least a portion of the second pipe section is located in the dust chamber and beside the air passage. An air outlet is provided on the peripheral wall of the second pipe section, and the side wall of the second pipe section opposite to the air outlet is a guide wall for guiding the fluid entering through the first pipe section downward. The edge of the air outlet on the side away from the first pipe section is located on the guide wall. The axis of the second pipe section is defined as the first axis. The second pipe section is arranged horizontally along the height direction of the vacuum cleaner. The lowest end of the air passage is located below the first axis, and the distance h1 between the lowest end of the air passage and the first axis satisfies: 0mm < h1 ≤ 95.7mm. The distance h2 between the first axis and the outer bottom surface of the dustbin and the total height H of the dustbin satisfy: h2 / H = 58%~73%.

2. The vacuum cleaner according to claim 1, characterized in that, The guide wall is an arc-shaped surface that arches away from the inner cavity of the second pipe section.

3. The vacuum cleaner according to claim 1, characterized in that, The spacing h1 is 15mm, and h2 / H = 65.84%.

4. The vacuum cleaner according to any one of claims 1 to 3, characterized in that, The dust bin includes a body with an open top and a lid covering the open top. The body and the lid together form the dust chamber. The first sidewall includes an upper sidewall on the lid and a lower sidewall on the body. The first pipe section is disposed on the lower sidewall or the upper sidewall.

5. The vacuum cleaner according to claim 4, characterized in that, The opening is hexagonal, and the inner periphery of the opening includes a first edge and a second edge arranged at relative intervals. The second edge is located on the lower sidewall, and the separation assembly is offset from the center of the opening and arranged close to the first edge.

6. The vacuum cleaner according to claim 5, characterized in that, The plane containing the opening is defined as the first plane, and the outer periphery of the orthographic projection of the separation component on the first plane is defined as the outer contour line. The minimum distance between the outer contour line and the first edge and the two side edges is equal or substantially equal.

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