Dust collector

Abstract

The utility model provides a vacuum cleaner. The dust collector comprises a dust collecting barrel and a machine head assembly detachably assembled on the dust collecting barrel. The machine head assembly comprises a fan and a filter. When the dust collector works, an airflow path from an inlet of the dust collector to an outlet of the dust collector is formed. The airflow path includes a first path portion from the filter to the fan. The filter is located on one side of the fan in the radial direction, and the fan and the filter are arranged on a straight line segment. The linear section determines the maximum size of the machine head assembly in the radial direction. The first path part comprises an axial path section extending in the direction approximately parallel to the axial direction of the fan, and the axial path section does not pass through the linear section. According to this configuration, the handpiece assembly can have a smaller size. By means of the machine head assembly with the small size, on the premise that the space of the dust collection chamber is not obviously reduced, the dust collector can obtain the small size, and then the small occupied space, the good portability and the good operation flexibility are obtained.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular, to a dust collector. BACKGROUND

[0002] As a kind of cleaning equipment, the dust collector is widely used in various scenes. According to the shape, the dust collector is usually classified into a standing type dust collector, a lying type dust collector, a portable dust collector and a barrel type dust collector. Due to the advantages of large capacity, strong suction and high efficiency filtration, the barrel type dust collector is often applied to the cleaning work of public or industrial environment. The barrel type dust collector is usually composed of a dust collecting barrel and a head assembly. The dust collecting barrel is provided with a dust collecting chamber for storing dust and the like. The head assembly is usually provided with a fan for generating suction air flow and a filter for filtering air. The head assembly is expected to have a small size. Reducing the size of the head assembly can reduce the space occupation of the entire barrel type dust collector without significantly reducing the space of the dust collecting chamber, thereby improving the portability and operation flexibility of the barrel type dust collector. However, the head assembly of the previous barrel type dust collector has a relatively large size. SUMMARY

[0003] Therefore, the present utility model provides a barrel type dust collector, which aims to solve the problem of the relatively large size of the head assembly of the previous barrel type dust collector.

[0004] The dust collector provided by the present disclosure comprises a dust collecting barrel and a head assembly detachably assembled to the dust collecting barrel. The head assembly comprises a fan and a filter. When the dust collector is working, an air flow path is formed from the inlet of the dust collector to the outlet of the dust collector. The air flow path comprises a first path part from the filter to the fan. The filter is located on the radial side of the fan, and the fan and the filter are arranged on a straight line segment. The straight line segment determines the maximum size of the head assembly in the radial direction. The first path part comprises an axial path segment extending in a direction substantially parallel to the axial direction of the fan, and the axial path segment does not pass through the straight line segment.

[0005] According to the dust collector provided by the present disclosure, on the one hand, the filter is located on the radial side of the fan, which enables the head assembly to have a smaller size in the axial direction of the fan. On the other hand, the fan and the filter are arranged along the straight line segment which determines the maximum size of the head assembly in the radial direction. The first path part from the filter to the fan comprises an axial path segment extending in a direction substantially parallel to the axial direction, and the axial path segment does not pass through the straight line segment, which enables the fan and the filter to be close to each other in the radial direction of the fan, helping the head assembly to obtain a smaller size in the radial direction of the fan. According to the above two aspects, the head assembly can have a smaller size. Through the smaller size of the head assembly, the dust collector can obtain a smaller size without significantly reducing the space of the dust collecting chamber, thereby obtaining smaller space occupation, better portability and better operation flexibility.

[0006] Additionally or alternatively, the inlet is disposed on the dust collecting barrel, the inlet is located on the straight segment or on an extension line of the straight segment, and the filter is further away from the inlet relative to the fan.

[0007] This arrangement lengthens the portion of the airflow path from the inlet to the filter, i.e. the length of the second path portion. As the second path portion is longer, the dust and debris entrained in the suction airflow have more time and distance to settle as the suction airflow flows through the second path portion, which helps to improve cleaning efficiency and avoid the risk of the filter being clogged by dust and debris.

[0008] Additionally or alternatively, the airflow path further comprises a second path portion upstream of the first path portion. The first path portion extends from a top end of the filter to the fan. The second path portion extends from the inlet, through a dust collecting chamber in the dust collecting barrel, to a bottom end of the filter, such that the airflow flows through the filter from bottom to top.

[0009] According to this configuration, the second path portion is upstream of the first path portion. The airflow pushed by the fan flows from upstream to downstream. Therefore, the airflow flows from the second path portion to the first path portion. In addition, the second path portion extends to the bottom end of the filter, and the first path portion extends from the top end of the filter to the fan. This inevitably causes the airflow to flow through the filter from bottom to top. Compared to the airflow flowing through the filter from top to bottom, the advantage of the airflow flowing through the filter from bottom to top is that the dust, debris, etc. will be deposited at the bottom of the dust collecting chamber under the action of gravity as the airflow flows through the filter, which helps to improve cleaning efficiency and reduce the risk of the filter being clogged.

[0010] Additionally or alternatively, the first path portion comprises a top end path segment and a bottom end path segment. The top end path segment extends from the top end of the filter to the top end of the axial path segment. The bottom end path segment extends from the bottom end of the axial path segment to the bottom end of the fan.

[0011] The filtered airflow can flow from the top end of the filter, through the top end path segment, the axial path segment and the bottom end path segment in sequence, into the fan.

[0012] Additionally or alternatively, the top end path segment has a top surface facing the top surface of the filter, the top surface gradually rises in a direction approaching the axial path segment.

[0013] The top surface gradually rises in the direction approaching the axial path segment, forming a guide slope. With the help of the guide slope, the airflow can flow smoothly from the filter to the axial path segment, which helps to avoid unnecessary turbulence and vortex of the airflow when flowing to the axial path segment.

[0014] Additionally or alternatively, in a plan view along the axial direction of the fan, the filter does not overlap the bottom end path segment.

[0015] According to this configuration, the bottom end of the filter will be directly exposed to the dust collection chamber without being blocked by the bottom end path segment. In other words, the bottom end path segment will not pass directly below the filter. The advantage of this is that the presence of the bottom end path segment will not or less obstruct the airflow flowing upwards from the dust collection chamber to the filter, thereby reducing the flow resistance.

[0016] Additionally or alternatively, a first air guide is provided between the top end path segment and the axial path segment, the first air guide combing the airflow flowing from the top end path segment to the axial path segment.

[0017] The first air guide mainly combs the airflow flowing from the top end path segment to the axial path segment. It can smoothly guide the airflow of the top end path segment to the axial path segment, ensuring smooth transition and uniform distribution of the airflow, avoiding the generation of turbulent flow.

[0018] Additionally or alternatively, a second air guide is provided in the axial path segment, the second air guide combing the airflow flowing through the axial path segment.

[0019] The second air guide is located in the axial path segment and is responsible for combing the airflow flowing through the path segment. It can ensure uniform distribution of the airflow in the axial path segment, avoiding the generation of turbulent flow.

[0020] Additionally or alternatively, a third air guide is provided in the bottom end path segment, the third air guide combing the airflow flowing through the bottom end path segment.

[0021] The third air guide is located in the bottom end path segment and is responsible for combing the airflow flowing through the path segment. It can smoothly guide the airflow from the bottom end path segment to other path segments or exhaust systems, avoiding the generation of turbulent flow and ensuring the overall airflow balance of the system.

[0022] Additionally or alternatively, the head assembly comprises a top cover, a support frame and a tray assembled together. The support frame is provided with a first support portion, a second support portion and a flow channel portion. The fan is supported by the first support portion, and the filter is supported by the second support portion. The top cover and the support frame jointly form the top end path segment, the flow channel portion forms the axial path segment, and the tray and the support frame jointly form the bottom end path segment.

[0023] This configuration has the advantages of simple structure and easy assembly.

[0024] Additionally or alternatively, the airflow path further comprises a third path portion located downstream of the first path portion. The third path portion extends from the fan to the outlet. In a plan view observed along the axial direction of the fan, the first path portion and the third path portion are located on opposite sides of a straight line segment in the transverse direction, respectively.

[0025] Since the fan and the filter are arranged on the straight section, and the head assembly is substantially cylindrical, the opposite sides in the transverse direction of the straight section have residual spaces. If the first path portion and the third path portion are arranged on the same side in the transverse direction of the straight section, the space on the other side will not be utilized, which will reduce the space utilization. In terms of products, it will either result in a narrow airflow path, or increase the size of the head assembly. In contrast, in the disclosed current embodiment, the first path portion and the third path portion are arranged on the opposite sides in the transverse direction of the straight section, which improves the space utilization, and in turn, does not significantly increase the size of the head assembly while ensuring a wider airflow path.

[0026] Additionally or alternatively, in a plan view observed along the axial direction of the fan, the third path portion extends from the fan to the outlet in a direction away from the inlet.

[0027] According to such a configuration, the outlet will be located on the side of the cleaner opposite to the inlet. Considering that in actual use, the area to be cleaned is usually located on the side of the cleaner where the inlet is located, if the outlet is also located on this side, the airflow discharged by the outlet during operation may blow away the dust or debris of the area to be cleaned, thereby affecting the efficiency of the cleaning operation. In addition, arranging the inlet and the outlet on the opposite sides of the cleaner also helps to improve the space utilization, thereby further reducing the overall size of the cleaner. BRIEF DESCRIPTION OF DRAWINGS

[0028] It should be understood that the following drawings only show certain embodiments of the present application and should not be considered as limiting the scope.

[0029] It should be understood that the same or similar reference signs are used to represent the same or similar elements in the drawings.

[0030] It should be understood that the drawings are only schematic and the sizes and proportions of the elements in the drawings are not necessarily to scale.

[0031] Figure 1 is a structural schematic diagram of a cleaner according to an embodiment of the present disclosure.

[0032] Figure 2 is a schematic cross-sectional view taken along line A-A in Figure 1

[0033] Figure 3 is a schematic cross-sectional view taken along line B-B in Figure 1

[0034] Figure 4 is a schematic cross-sectional view taken along line C-C in Figure 3

[0035] Figure 5 is a structural schematic diagram of a cleaner according to an embodiment of the present disclosure. Figure 1 ​​​Structure diagram of the arrangement relationship of the fan, filter and airflow path of the cleaner in FIG. 1.

[0036] Figure 6 is Figure 1 Exploded diagram of the head assembly of the cleaner in FIG. 1.

[0037] Figure 7 is Figure 6 Structure diagram of the second cover plate in FIG. 1.

[0038] Figure 8 is Figure 6 Structure diagram of the tray in FIG. 1.

[0039] Reference signs:

[0040] 100, cleaner; 10, dust collecting barrel; 11, dust collecting chamber; 20, head assembly; 20a, outer envelope; 21, fan; 211, actuator; 212, impeller; 22, filter; 23, top cover; 231, top cover body; 2311, window; 2312, first grid part; 232, first cover plate; 2321, plate body part; 2322, second grid part; 2323, window part; 2324, first air guide part; 233, second cover plate; 24, support frame; 241, first support part; 242, second support part; 243, flow channel part; 2431, second air guide part; 25, tray; 251, slope part; 2512, third air guide part; 252, disc part; 30, inlet; 40, outlet; 70, wheel; D, minimum circumscribed circle; S, axis; G, top surface; R11, axial path segment; R12, top end path segment; R13, bottom end path segment; R2, second path part; R3, third path part; X, straight line segment. DETAILED DESCRIPTION

[0041] The head assembly of the conventional barrel-type cleaner has a relatively large size, which is not conducive to the portability and operational flexibility of the barrel-type cleaner.

[0042] The head assembly includes the main functional components of the barrel-type cleaner, such as the fan and the filter, etc. In addition, a part of the airflow path is also provided in the head assembly. These two aspects are the main reasons why the head assembly has a large size.

[0043] In a head assembly, the filter is arranged on one side of the fan in the axial direction. This arrangement results in a large size of the head assembly in the axial direction of the fan. In most cases, the axial direction of the fan is the up-down direction in the use state, i.e. the direction of gravity. Such a head assembly may occupy the space of the dust collecting chamber. Alternatively, in the case of ensuring that the dust collecting chamber has sufficient space, the barrel-type cleaner with such a head assembly will have a large height.

[0044] In another type of nozzle assembly, the filter is arranged on one side of the fan in the radial direction, and the portion of the airflow path from the filter to the fan is located between the fan and the filter in the radial direction. This arrangement results in a nozzle assembly having a large radial dimension. In most cases, the nozzle assembly, and even the entire barrel cleaner, has a substantially cylindrical shape. Thus, a barrel cleaner having such a nozzle assembly has a large diameter.

[0045] As described above, the two aspects described above result in the prior art nozzle assembly having either a large axial dimension or a large radial dimension. How to reduce the size of the nozzle assembly without significantly changing the composition and function of the nozzle assembly in the case of limited design space is a problem that has plagued those skilled in the art.

[0046] To solve this problem, the present disclosure provides a barrel cleaner. Under the premise of including the main functional components of the cleaner, such as the fan and the filter, and a portion of the airflow path is also provided therein, the nozzle assembly of the barrel cleaner provided by the present disclosure has a small size. According to this nozzle assembly, the barrel cleaner provided by the present disclosure will have better portability and operational flexibility.

[0047] The nozzle assembly provided by the present disclosure will be described below in conjunction with specific embodiments and their accompanying drawings.

[0048] Many specific details will be set forth below to provide an understanding of the structure, function, and use of the embodiments shown in the specification and drawings. It will be appreciated that the embodiments described herein and shown are non-limiting examples, and it will be recognized that the specific structural and functional details disclosed herein are representative and exemplary. Embodiments can be modified and altered without departing from the scope of the claims.

[0049] An embodiment of the present disclosure provides a cleaner 100 in Figure 1 is shown. Referring to Figure 1 , the cleaner 100 is a barrel cleaner, which includes a dust collecting barrel 10 and a nozzle assembly 20. Referring to Figure 2 , the dust collecting barrel 10 is provided with a dust collecting chamber 11 for storing the dust and debris sucked in. The nozzle assembly 20 is mounted on the top of the dust collecting barrel 10 to close the top side of the dust collecting chamber 11. In combination with Figure 1 and Figure 3 , the cleaner 100 is provided with an inlet 30 and an outlet 40. For example, the inlet 30 can be provided on the dust collecting barrel 10, and the outlet 40 can be provided on the nozzle assembly 20.

[0050] Referring to Figure 3 and Figure 4The head assembly 20 includes a fan 21 and a filter 22. The fan 21 is configured to generate the suction airflow. The filter 22 is configured to filter the air, leaving dust or debris in the dust chamber. For example, referring to Figure 6 The fan 21 can include an actuator 211 and an impeller 212. The actuator 211 can be configured to output torque to the impeller 212, driving the impeller 212 to rotate about an axis S. Upon rotation, the impeller 212 pushes air, forming the suction airflow. The suction airflow flows along an airflow path from the inlet 30 to the outlet 40.

[0051] For ease of understanding, the course of the airflow path is schematically illustrated by the dashed arrowed line in Figure 5 It is to be understood that the course of the airflow path in Figure 5 is merely schematic, and the configuration and dimensions of the various portions thereof are not necessarily accurate. As shown in Figure 5 , along a direction from upstream to downstream, i.e. along the flow direction of the suction airflow, the airflow path extends from the inlet 30, sequentially through the dust chamber 11, the filter 22, and the fan 21, and then to the outlet 40.

[0052] Upon operation of the cleaner, the suction airflow will enter the dust chamber 11 from the inlet 30, and pass through the dust chamber 11 to the filter 22. The filter 22 allows the airflow itself to pass through, but blocks the dust and debris entrained in the airflow from passing through. Thus, the dust and debris will be left in the dust chamber 11. The filtered suction airflow will then pass from the filter 22 through the fan 21 to the outlet 40, and eventually be exhausted out of the cleaner 100.

[0053] By way of example only, returning to Figure 1 , the cleaner 100 can further include a tube 50 and a suction head 60. The proximal end of the tube 50 is connected to the inlet 30, and the distal end of the tube 50 is connected to the suction head 60. With the tube 50 and the suction head 60, the origin of the suction airflow can be extended from the inlet 30 to the suction port of the suction head 60. With the tube 50 and the suction head 60, the operator can apply the suction airflow to a location that is further away, or to a corner that is not easily accessible.

[0054] By way of example only, continuing to refer to Figure 1 , the cleaner 100 can further include a plurality of wheels 70. The wheels 70 can be supported on the bottom of the dust bin 10. With the wheels 70, the operator can manually or with the aid of a motor to push the cleaner 100 to move, to perform cleaning operation in a larger area.

[0055] Referring to Figure 3 and Figure 5The filter 22 is located radially aside of the fan 21. In this context, axial can mean the direction of extension of the axis S, and radial can mean the direction of a straight line passing through the axis S in a radial plane perpendicular to the axis S. Most often, axial can mean the up-down direction, i.e. the direction perpendicular to the gravity. In this case, the filter 22 being located radially aside of the fan 21 can mean that the filter 22 is neither located above nor below the fan 21, but is arranged side by side with the fan 21.

[0056] With continued reference to Figure 3 and Figure 5 , the fan 21 and the filter 22 are arranged along a straight line segment X, which defines the maximum radial dimension of the head assembly 20. In particular, as shown in Figure 3 , in a plan view as seen in the axial direction, the head assembly 20 has an outer envelope 20a having a minimum circumscribed circle D, and the straight line segment X can be a straight line segment passing through the center of the circumscribed circle D and having its end points on the circumscribed circle D. It can also be said that the straight line segment X is a diameter of the circumscribed circle D. It is understood that, for the sake of simplicity, Figure 3 , some elements visible in this view are omitted, for example the wheels 70.

[0057] With continued reference to Figure 3 and Figure 5 , the airflow path comprises a first path portion from the filter 22 to the fan 21. That is, the airflow will flow from the filter 22 to the fan 21 along the first path portion. The first path portion comprises an axial path segment R11 extending in a direction substantially parallel to the axial direction of the fan 21. Figure 2 and Figure 4 The axial path segment R11 is shown from another view. The axial path segment R11 does not pass through the straight line segment X.

[0058] On the one hand, the filter 22 being located radially aside of the fan 21 allows the head assembly 20 to have a small dimension in the axial direction of the fan 21.

[0059] On the other hand, the fan 21 and the filter 22 being arranged along a straight line segment X defining the maximum radial dimension of the head assembly 20, the first path portion from the filter 22 to the fan 21 comprising an axial path segment R11 extending in a direction substantially parallel to the axial direction, and the axial path segment R11 not passing through the straight line segment X, allows the fan 21 and the filter 22 to be close to each other in the radial direction of the fan 21, which helps the head assembly 20 to have a small dimension in the radial direction of the fan 21.

[0060] According to the above two aspects, the head assembly 20 can have a small size. With the small size of the head assembly 20, the cleaner 100 can have a small size, and thus a small space occupation, a better portability and a better operation flexibility, without significantly reducing the space of the dust collecting chamber 11.

[0061] With reference to Figures 2 to 5 , the inlet 30 can be located on the straight line segment X or an extension line of the straight line segment X. Also, the filter 22 is farther from the inlet 30 relative to the fan 21. That is, the fan 21 is closer to the inlet 30 relative to the filter 22. In other words, the filter 22 is disposed on a side of the fan 21 which is away from the inlet 30. This arrangement lengthens the length of the portion of the airflow path from the inlet 30 to the filter 22, i.e. the second path portion R2. Since the second path portion R2 is longer, the dust and debris entrained in the suction airflow have more time and distance to settle down when the suction airflow flows through the second path portion R2, which is beneficial to improve the cleaning efficiency and avoid the filter 22 being clogged by the dust and debris.

[0062] With continued reference to Figures 2 to 5 , the second path portion R2 is upstream of the first path portions R12, R11, R13. That is, the suction airflow flows through the second path portion R2 first, and then flows through the first path portions R12, R11, R13. The second path portion R2 extends from the inlet 30 to the bottom end of the filter 22 via the dust collecting chamber 11 in the dust collecting barrel 10, and the first path portions R12, R11, R13 extend from the top end of the filter 22 to the fan 21, so that the airflow flows through the filter 22 from bottom to top. According to this configuration, the second path portion R2 is upstream of the first path portions R12, R11, R13. The airflow driven by the fan flows from upstream to downstream. Therefore, the airflow flows from the second path portion R2 to the first path portions R12, R11, R13. In addition, the second path portion R2 extends to the bottom end of the filter 22, and the first path portions R12, R11, R13 extend from the top end of the filter 22 to the fan 21. This inevitably causes the airflow to flow through the filter 22 from bottom to top. Compared with the airflow flowing through the filter 22 from top to bottom, the advantage of the airflow flowing through the filter 22 from bottom to top is that the dust, debris and the like will be deposited at the bottom of the dust collecting chamber 11 under the action of gravity when the airflow flows through the filter 22, which is helpful to improve the cleaning efficiency and reduce the risk of the filter 22 being clogged.

[0063] With reference to Figure 2 , Figure 4 and Figure 5The first path portion can further include a top end path segment R12 and a bottom end path segment R13. The top end path segment R12 can extend from a top end of the filter 22 to a top end of the axial path segment R11, and the bottom end path segment R13 can extend from a bottom end of the axial path segment R11 to a bottom end of the fan 21. The filtered air flow can flow from the top end of the filter 22, sequentially through the top end path segment R12, the axial path segment R11, and the bottom end path segment R13, and into the fan 21.

[0064] With reference to Figure 2 and Figure 5 , the top end path segment R12 can have a top surface G facing the filter 22. The top surface G can gradually rise in a direction approaching the axial path segment R11. In a perspective view of Figure 2 , the top surface G can rise more to the left. The top surface G gradually rises in the direction approaching the axial path segment R11, forming a guide slope. With the help of the guide slope, the air flow can be kept smooth in the process of flowing from the filter 22 to the axial path segment R11, which helps to avoid unnecessary turbulence and vortex of the air flow when flowing to the axial path segment R11.

[0065] By way of example only, please refer to Figure 6 , the head assembly 20 can further include a top cover 23, which can include a top cover body 231, a first cover plate 232, and a second cover plate 233. The top cover body 231 can be provided with a window 2311 exposing the filter 22, the first cover plate 232 can be provided on the window 2311, and the second cover plate 233 can be provided above the first cover plate 232. After being used for a period of time, the operator can sequentially remove the second cover plate 233 and the first cover plate 232, and then take out the filter 22 through the window 2311 for necessary cleaning or replacement. In combination with Figure 2 and Figure 7 , the first cover plate 232 can have a plate body portion 2321, and the top surface G can be the surface of the side of the plate body portion 2321 facing the filter 22.

[0066] By way of example only, please refer to Figure 2 , Figure 6 and Figure 7 , the first cover plate 232 can be provided with a first grid portion 2322 and a window portion 2323, and the top cover body 231 can be provided with a second grid portion 2312. The top end path segment R12 passes through the first grid portion 2322 to the upper side of the first cover plate 232, and then sequentially passes through the window portion 2323 and the second grid portion 2312 to the axial path segment R11. According to this configuration, when replacing or cleaning the filter 22, foreign matter can be prevented from entering the axial path segment R11. If foreign matter enters the axial path segment R11, it can reach the fan 21 along the first path portion, thereby damaging the fan 21.

[0067] Please refer mainly to Figure 3 and secondarily to Figure 4 and Figure 5 In a plan view observed along the axial direction of the fan 21, the filter 22 can not overlap with the bottom-end path segment R13. For ease of understanding, the bottom-end path segment R13 is shown by a dashed line in Figure 3 . According to this configuration, the bottom end of the filter 22 will be directly exposed to the dust collecting chamber 11 without being blocked by the bottom-end path R13. Or in other words, the bottom-end path segment R13 will not pass directly below the filter 22. The advantage of this is that the presence of the bottom-end path segment R13 will not or less obstruct the airflow flowing upward from the dust collecting chamber 11 to the filter 22, thereby reducing the flow resistance.

[0068] Referring to Figure 6 , the head assembly 20 can further include a support frame 24 and a tray 25. The support frame 24 can be provided with a first support portion 241, a second support portion 242, and a flow channel portion 243. The fan 21 can be supported on the first support portion 241, and the filter 22 can be supported on the second support portion 242. The top cover 23 and the support frame 24 can jointly form the top-end path segment R12, the flow channel portion 243 can form the axial path segment R11, and the tray 25 and the support frame 24 can jointly form the bottom-end path segment R13. This configuration has the advantages of simple structure and easy assembly.

[0069] Further, referring to 4 and Figure 8 , the tray 25 can include a slope portion 251 and a disc portion 252. The slope portion 251 can gradually descend along the direction around the axis S, and the disc portion 252 can be located directly below the fan 21. This configuration can help the bottom-end path segment R13 defined by the tray 25 to not overlap with the filter in a plan view observed along the axial direction of the fan 21.

[0070] In order to avoid reducing the flow resistance, places in the first path portion where turbulence is prone to occur can be provided with air guide portions, which can be configured as air guide ribs extending along the flow direction of the airflow.

[0071] In some embodiments, referring to Figure 2 , a first air guide portion 2324 can be provided between the top-end path segment R12 and the axial path segment R11, which can comb the airflow flowing from the top-end path segment R12 to the axial path segment R11. The first air guide portion 2324 mainly combs the airflow flowing from the top-end path segment R12 to the axial path segment R11. It can smoothly guide the airflow of the top-end path segment R12 to the axial path segment R11, ensuring smooth transition and uniform distribution of the airflow, and avoiding the generation of turbulence. By way of example only, referring to Figure 7The first air guide portion 2324 can be a part of the first cover plate 232, which can be disposed at the first grid portion 2322.

[0072] In some embodiments, with reference to Figure 2 and Figure 3 The axial path segment R11 can be internally provided with a second air guide portion 2431, which can comb the airflow flowing through the axial path segment. The second air guide portion 2431 is located in the axial path segment R11 and is responsible for combing the airflow flowing through this path segment R11. It can ensure the uniform distribution of the airflow in the axial path segment R11 and avoid the generation of turbulent flow. By way of example only, in combination with Figure 6 The first air guide portion 2324 can be a part of the flow channel portion 243, which can be disposed in the flow channel portion 243.

[0073] In some embodiments, with reference to Figure 2 The bottom end path segment R13 is internally provided with a third air guide portion 2512, which can comb the airflow flowing through the bottom end path segment R13. The third air guide portion is located in the bottom end path segment and is responsible for combing the airflow flowing through this path segment. It can smoothly guide the airflow from the bottom end path segment to other path segments or exhaust systems, avoid the generation of turbulent flow, and ensure the overall airflow balance of the system. By way of example only, in combination with Figure 8 The third air guide portion 2512 can be a part of the slope portion 251 of the tray 25, which can be disposed in the slope portion 251.

[0074] With reference to Figure 2 and Figure 3 The airflow path can further include a third path portion R3 located downstream of the first path portion. The third path portion R3 can extend from the fan 21 to the outlet 40. In a plan view observed along the axial direction of the fan 21, in combination with Figure 3 and Figure 5 The first path portions R12, R11, R13 and the third path portion R3 can be located on opposite sides of the straight line segment X transversely, respectively. It can be understood that, in this context, the straight line segment X transversely is a concept opposite to its longitudinal direction; the longitudinal direction of the straight line segment X can refer to the direction from one end of the straight line segment X to the other end; the transverse direction of the straight line segment X can refer to the direction across the straight line segment X, from one side of the straight line segment X to the other side.

[0075] Since the fan 21 and the filter 22 are arranged on the straight section X, and the head assembly 20 is substantially cylindrical, the opposite sides of the straight section X in the transverse direction have remaining spaces. If the first path portions R12, R11, R13 and the third path portion R3 are arranged on the same side of the straight section X in the transverse direction, the space on the other side will not be utilized, which will reduce the space utilization. In response to the product, either the airflow path will be narrow, or the size of the head assembly 20 will be increased. In contrast, in the disclosed current embodiment, the first path portions R12, R11, R13 and the third path portion R3 are arranged on the opposite sides of the straight section X in the transverse direction, respectively, which improves the space utilization, and further ensures that the airflow path is wide without significantly increasing the size of the head assembly 20.

[0076] Further, with continued reference to Figure 3 and Figure 5 In a plan view observed along the axial direction of the fan 21, the third path portion R3 can extend from the fan 21 to the outlet 40 in a direction away from the inlet 30.

[0077] According to such a configuration, the outlet 40 will be located on the side of the entire cleaner 100 facing away from the inlet 30. Considering that in actual use, the area to be cleaned is usually located on the side of the inlet 30 of the cleaner 100, if the outlet 40 is also located on this side, the airflow discharged by the outlet during operation can blow away the dust or debris of the area to be cleaned, thereby affecting the efficiency of the cleaning operation. In addition, arranging the inlet 30 and the outlet 40 on the opposite sides of the cleaner 100 also helps to improve the space utilization, thereby further reducing the overall size of the cleaner 100.

[0078] It should be noted that the various elements described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combinations.

[0079] It should be understood that a plurality of components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into separate components and / or parts. The disclosure "a" or "an" used to describe a component or part does not exclude other components or parts.

[0080] It should be understood that although the terms "first" or "second" and the like can be used in the present application to describe various elements (such as the first path portion and the second path portion), these elements are not set by these terms, and these terms are only used to distinguish one element from another.

[0081] The basic principle of the present application is described above in combination with specific embodiments, however, it should be pointed out that the advantages, advantages, effects and the like mentioned in the present application are only examples and not limitations, and these advantages, advantages, effects and the like cannot be considered as the must-have of each embodiment of the present application. In addition, the above disclosed specific details are only for the purpose of example and understanding, and are not limited to the above specific details. The above details do not limit the present application to be realized by the above specific details.

[0082] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A dust collector comprising a dust bin and a head assembly detachably assembled to the dust bin, the head assembly comprising a fan and a filter, the dust collector defining a gas flow path from an inlet of the dust collector to an outlet of the dust collector when the dust collector is in operation, the gas flow path comprising a first path portion from the filter to the fan, characterized in that: the filter is located at a radial side of the fan, and the fan and the filter are arranged on a straight line segment, the straight line segment defining a maximum dimension of the head assembly in the radial direction, the first path portion comprises an axial path segment extending in a direction substantially parallel to an axial direction of the fan, the axial path segment does not pass through the straight line segment.

2. The dustsucker according to claim 1, characterized in that, the inlet is provided on the dust bin, the inlet is located on the straight line segment or on an extension line of the straight line segment, and the filter is located further away from the inlet relative to the fan.

3. The dustsucker according to claim 2, characterized in that, the gas flow path further comprises a second path portion upstream of the first path portion, the first path portion extending from a top end of the filter to the fan, the second path portion extending from the inlet to a bottom end of the filter via a dust collection chamber in the dust bin, such that the gas flow flows through the filter from bottom to top.

4. The dust cup according to claim 1, wherein the first path portion further comprises a top end path segment and a bottom end path segment, the top end path segment extending from the top end of the filter to a top end of the axial path segment, the bottom end path segment extending from a bottom end of the axial path segment to a bottom end of the fan.

5. The dust cup according to claim 4, wherein the top end path segment has a top surface facing the filter, the top surface gradually rises in a direction approaching the axial path segment.

6. The dust cup according to claim 4, wherein in a plan view observed in the axial direction of the fan, the filter does not overlap with the bottom end path segment.

7. The dust cup according to claim 4, wherein a first air guide portion is provided between the top end path segment and the axial path segment, the first air guide portion combs the gas flow flowing from the top end path segment to the axial path segment; and / or, a second air guide portion is provided in the axial path segment, the second air guide portion combs the gas flow flowing through the axial path segment; and / or, a third air guide portion is provided in the bottom end path segment, the third air guide portion combs the gas flow flowing through the bottom end path segment.

8. The dust cup according to claim 4, wherein the head assembly comprises a top cover, a support frame and a tray assembled together, the support frame is provided with a first support portion, a second support portion and a flow passage portion, the fan is supported on the first support portion, the filter is supported on the second support portion, the top cover and the support frame jointly form the top end path segment, the flow passage portion forms the axial path segment, and the tray and the support frame jointly form the bottom end path segment.

9. The dust cup according to claim 1, wherein the gas flow path further comprises a third path portion downstream of the first path portion, the third path portion extending from the fan to the outlet; in a plan view observed in the axial direction of the fan, the first path portion and the third path portion are located on opposite sides of the straight line segment in a transverse direction.

10. The dustsucker according to claim 9, characterized in that, in a plan view observed in the axial direction of the fan, the third path portion extends from the fan to the outlet in a direction away from the inlet.

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