Air exhaust assembly of dust collector and dust collector

Abstract

The utility model discloses an exhaust assembly of a dust collector and the dust collector, and solves the problems of loud noise and low cleaning efficiency of the exhaust assembly in the prior art. The air exhaust assembly comprises an upper cavity and a lower cavity, wherein a third filtering piece is arranged in the upper cavity; the lower cavity is located below the upper cavity and communicates with the upper cavity, and a rotary air outlet device is arranged in the lower cavity; the exhaust suction inlet is communicated with the lower cavity; in the dust collector, gas flowing out of a gas treatment device located on the upstream of the air exhaust assembly enters the rotary air outlet device through the air exhaust suction inlet, flows in the rotary air outlet device, then is exhausted upwards and flows to the third filter part, and then is discharged out of the third filter part. And the gas filtered by the third filtering piece is exhausted upwards through the air outlet end of the air exhaust assembly.

Description

Vacuum cleaner exhaust assembly and vacuum cleaner Technical Field

[0001] This utility model belongs to the field of cleaning equipment technology, specifically, it relates to an exhaust component for a vacuum cleaner and a vacuum cleaner. Background Technology

[0002] In existing vacuum cleaners, the exhaust component located between the fan and the exhaust port has a simple structure and a short gas flow path. This not only results in a high exhaust velocity and loud noise, but also makes it difficult to provide sufficient space for dust and air separation due to the short flow path, leading to low cleaning efficiency. Summary of the Invention

[0003] The purpose of this utility model is to provide a vacuum cleaner exhaust component and a vacuum cleaner, which solves the problems of high noise and low cleaning efficiency of the exhaust components in the prior art.

[0004] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0005] An exhaust assembly for a vacuum cleaner includes:

[0006] The upper cavity contains a third filter element;

[0007] The lower cavity is located below the upper cavity and communicates with the upper cavity. A rotating air outlet device is provided in the lower cavity.

[0008] An exhaust inlet is connected to the lower cavity.

[0009] Gas flowing from the gas treatment device located upstream of the exhaust assembly in the vacuum cleaner enters the rotary exhaust device through the exhaust inlet, flows in the rotary exhaust device, and then flows upward and toward the third filter. The gas filtered by the third filter is then discharged upward through the exhaust outlet of the exhaust assembly.

[0010] In some embodiments of this application, the exhaust assembly includes:

[0011] The exhaust housing has a ring-shaped structure, and the exhaust intake is formed on the exhaust housing;

[0012] An exhaust top cover is located at the top of the exhaust housing and connected to the exhaust housing, and an exhaust vent is provided on it;

[0013] An exhaust partition plate is disposed inside the exhaust housing and has a rotating air duct outlet on it. It divides the internal cavity of the exhaust housing into an upper cavity and a lower cavity, which are connected through the rotating air duct outlet.

[0014] In some embodiments of this application, the rotating air outlet device includes a rotating air duct shell, the rotating air duct shell defining a rotating air duct, the air inlet end of the rotating air duct being connected to the exhaust air inlet, and the air outlet end of the rotating air duct being connected to the rotating air duct outlet.

[0015] In some embodiments of this application, the rotating air duct shell includes a spiral air duct shell, the outer end of the spiral air duct shell is sealed to the inner wall of the exhaust shell near the exhaust air inlet, and a spiral air duct inlet is formed at the inner end of the spiral air duct shell; a spiral rotating air duct is formed between the spiral air duct shell and the exhaust shell forming the lower cavity, as well as between the spiral air duct shell itself.

[0016] In some embodiments of this application, the third filter element is an annular body surrounding the outer periphery of the rotary air duct outlet. The third filter element extends upward from the upper surface of the exhaust partition plate to near the exhaust top cover. A space is left between the outer edge of the third filter element and the inner wall of the exhaust housing. The upper surface of the exhaust partition plate, the third filter element, the inner wall of the exhaust housing, and the exhaust top cover together define an exhaust air duct. The air inlet end of the exhaust air duct is connected to the lower cavity through the rotary air duct outlet, and the air outlet end of the exhaust air duct is connected to the top cover exhaust port on the exhaust top cover.

[0017] In some embodiments of this application, the third filter element includes:

[0018] The bottom frame is fitted to the upper surface of the exhaust partition plate;

[0019] Top cover, which is assembled with the exhaust top cover;

[0020] The filter element is located between the bottom frame and the top cover.

[0021] In some embodiments of this application, the exhaust cover is characterized in that it comprises:

[0022] The top cover has a flange that folds downwards, and several slots are provided on the outer side wall of the flange.

[0023] The top cover panel is located in the middle of the exhaust top cover;

[0024] The exhaust vent of the top cover surrounds the outer periphery of the top cover panel;

[0025] The exhaust housing is provided with a protrusion that matches the slot, and the exhaust top cover is detachably assembled with the exhaust housing through the slot and the protrusion.

[0026] In some embodiments of this application, an operating part is provided on the top cover plate surface. By operating the operating part, the exhaust top cover is rotated to detach the exhaust top cover from the exhaust housing.

[0027] In some embodiments of this application, the operating part includes two or more grooves or handles.

[0028] This application also provides a vacuum cleaner that includes the exhaust assembly of the vacuum cleaner described above.

[0029] Compared with the prior art, the advantages and positive effects of this utility model are:

[0030] The exhaust assembly of the vacuum cleaner provided in this application is divided into an upper chamber and a lower chamber that are connected to each other. A rotating air outlet device is installed in the lower chamber, and a third filter is installed in the upper chamber. Gas flowing out from the gas treatment device upstream of the exhaust assembly first enters the rotating air outlet device, flows in the rotating air outlet device, and then is discharged upward and flows to the third filter. The gas filtered by the third filter is discharged upward through the air outlet end of the exhaust assembly. This increases the length of the air outlet duct in the exhaust assembly, extends the overall airflow duct length inside the vacuum cleaner, reduces the exhaust air velocity, and reduces exhaust noise. Moreover, by setting up the third filter to filter the gas, the cleanliness of the exhaust air is improved, further improving the vacuum cleaner's dust collection and air cleaning effect.

[0031] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 is a perspective view of one embodiment of the vacuum cleaner proposed in this utility model;

[0034] Figure 2 is a second perspective view of an embodiment of the vacuum cleaner proposed in this utility model;

[0035] Figure 3 is a front view of the vacuum cleaner of the embodiment in Figure 1;

[0036] Figure 4 is a top view of the vacuum cleaner of the embodiment in Figure 1;

[0037] Figure 5 is a cross-sectional view of the vacuum cleaner of the embodiment in Figure 1;

[0038] Figure 6 is an exploded view of the dust cup assembly of the vacuum cleaner in the embodiment of Figure 1;

[0039] Figure 7 is a partial exploded view of the dust cup assembly in Figure 6;

[0040] Figure 8 is a partial assembly structure diagram of the vacuum cleaner casing of the embodiment in Figure 1;

[0041] Figure 9 is a cross-sectional view of part of the outer shell of Figure 8;

[0042] Figure 10 is an exploded view of the airflow generating assembly of the vacuum cleaner in the embodiment of Figure 1;

[0043] Figure 11 is an exploded view of the air outlet assembly of the vacuum cleaner in the embodiment of Figure 1;

[0044] Figure 12 is a cross-sectional view of the air outlet inner shell in Figure 11;

[0045] Figure 13 is a bottom view of the air outlet inner shell in Figure 11;

[0046] Figure 14 is a bottom view of the air outlet inner shell of another embodiment of the vacuum cleaner proposed in this utility model;

[0047] Figure 15 is a cross-sectional view of another embodiment of the vacuum cleaner proposed in this utility model;

[0048] Figure 16 is a partial structural schematic diagram of the dust cup assembly in Figure 15;

[0049] Figure 17 is a schematic diagram of the structure of the first filter element in Figure 15;

[0050] Figure 18 is a cross-sectional view of another embodiment of the vacuum cleaner proposed in this utility model;

[0051] Figure 19 is a schematic diagram of the structure of the first filter element in Figure 18. Detailed Implementation

[0052] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0053] Figures 1 to 13 illustrate an embodiment of the vacuum cleaner proposed in this utility model. The vacuum cleaner of this embodiment will be described below with reference to Figures 1 to 13.

[0054] Referring to Figures 1 to 9, the vacuum cleaner of this embodiment includes a nozzle assembly 1, a dust cup assembly 2, an airflow generating assembly 3, an exhaust assembly 4, and a handle assembly 5.

[0055] The dust cup assembly 2 includes a dust cup shell 20 and a dust-gas separation chamber disposed within the dust cup shell 20. A first suction port 2021 communicating with the separation chamber is formed on the dust cup shell 20. The separation chamber is capable of separating dust and gas from the gas entering the dust cup assembly 2 from the first suction port 2021.

[0056] The nozzle assembly 1 is installed on the dust cup housing 20. One end of the nozzle assembly away from the dust cup housing 20 forms the whole machine suction port 11, and the other end opposite to the whole machine suction port 11 is connected to the first suction port 2021 on the dust cup housing 20.

[0057] The exhaust assembly 4 is located above the dust cup assembly 2. The exhaust assembly 4 includes an exhaust housing 41 and an exhaust chamber disposed within the exhaust housing 41. The exhaust chamber and the separation chamber of the dust cup assembly 2 are isolated from each other in the air duct.

[0058] The airflow generating component 3 is located on one side of the exhaust component 4, and is positioned above and to the side of the dust cup component 2. The airflow generating component 3 includes a fan housing 31 and a fan cavity located inside the fan housing 31. The fan cavity includes a connected fan inlet channel and a fan outlet channel, and a fan 37 is installed within the fan outlet channel. The fan 37 is arranged laterally, and the axial direction of the fan cavity is parallel to the axial direction of the fan 37. The axial direction of the fan cavity forms an angle greater than 0° with the axial direction of the dust cup component 2 (i.e., the axial direction of the dust-gas separation chamber) and with the axial direction of the exhaust component 4 (i.e., the axial direction of the exhaust cavity). The fan inlet channel includes an inlet end and an outlet end, and the fan outlet channel includes an inlet end and an outlet end. The inlet end of the fan inlet channel and the outlet end of the fan outlet channel are both located at the end of the fan 37 closest to the exhaust assembly 4, while the outlet end of the fan inlet channel and the inlet end of the fan outlet channel are both located at the other end of the fan 37 furthest from the exhaust assembly 4. Furthermore, the inlet end of the fan inlet channel is connected to the outlet of the separation chamber of the dust cup assembly 2, and the outlet end of the fan outlet channel is connected to the inlet of the exhaust chamber of the exhaust assembly 4.

[0059] In some other embodiments, the axial direction of the fan cavity is perpendicular to the axial direction of the dust cup assembly 2 (i.e., the axial direction of the dust-gas separation cavity) and the axial direction of the exhaust assembly 4 (i.e., the axial direction of the exhaust cavity), forming an angle of 90°.

[0060] Referring to the airflow direction in Figure 5, when the vacuum cleaner is gripped by the handle assembly 5, under the negative pressure generated by the fan 37 in the airflow generating assembly 3, the gas containing dust and other impurities enters the separation chamber of the dust cup assembly 2 through the whole machine suction port 11 of the nozzle assembly 1 and the first suction port 2021 of the dust cup assembly 2 for dust-gas separation. The separated dust and other impurities remain in the dust cup shell 20. The separated clean gas flows upward towards the fan chamber, enters the fan inlet channel through the inlet end of the fan inlet channel, and then changes its flow direction, flowing to the left along the axial direction of the fan 37, reaching the outlet end of the fan inlet channel and the inlet end of the fan outlet channel; then the gas changes its flow direction again, flowing to the right along the axial direction of the fan 37, that is, in the opposite direction to the airflow in the fan inlet channel, flowing through the outlet end of the fan outlet channel to the exhaust chamber of the exhaust assembly 4, and finally being discharged from the exhaust chamber to the outside of the vacuum cleaner.

[0061] The clean gas separated in the separation chamber flows through the fan chamber of the airflow generating assembly 3 and the exhaust chamber of the exhaust assembly 4, especially through the fan inlet and outlet channels arranged along the axial direction of the fan 37 in the airflow generating assembly 3. This increases the flow path of the airflow inside the vacuum cleaner. The increased flow path provides ample space for dust and other impurities to separate from the airflow, increasing the cleanliness of the gas discharged from the vacuum cleaner and improving its cleaning efficiency. Furthermore, the airflow ducts effectively absorb the airflow noise generated by the fan 37, reducing the exhaust velocity in the exhaust chamber and thus lowering the overall noise level of the vacuum cleaner.

[0062] In some other embodiments, the vacuum cleaner does not have the handle assembly 5, and the vacuum cleaner is assembled into other cleaning equipment for use.

[0063] Referring to the exploded view of the dust cup assembly in Figure 6 and the partially exploded view of the dust cup assembly in Figure 7, in some embodiments of this utility model, the dust cup shell 20 of the dust cup assembly 20 includes a bottom cover 201, a side wall 202, and a top cover 204. The side wall 202 has a barrel-like structure, and the bottom cover 201 and the side wall 202 are detachably and sealed together. The top cover 204 and the side wall 202 are also detachably and sealed together. In some embodiments, the detachable assembly structure adopts a slot and hook structure; in other embodiments, the detachable assembly structure adopts a screw and stud structure; in still other embodiments, the detachable assembly structure adopts a structure in which both slots / hooks and screws / studs are engaged.

[0064] The dust cup housing 20 has a first separation chamber 21 and a second separation chamber 23 inside. The first separation chamber 21 is close to and communicates with the suction nozzle assembly 1, and is approximately cylindrical in shape, used for the first dust-gas separation of the airflow entering the dust cup housing 20. The second separation chamber 23 communicates with the first separation chamber 21 and is used for the second dust-gas separation of the airflow discharged from the first separation chamber 21.

[0065] The first separation chamber 21 and the second separation chamber 23 are arranged in a left-right configuration inside the dust cup housing 20. The airflow exits from the first separation chamber 21, changes direction, and then flows into the second separation chamber 23, thus increasing the variation in the airflow direction within the dust cup housing. This change in airflow direction reduces gas flow velocity and noise, enhances dust-air separation, improves the cleanliness of the final exhaust gas, and increases the cleaning efficiency of the vacuum cleaner.

[0066] Specifically, in this embodiment, the dust cup assembly 2 further includes a top plate 203, which is disposed on the inner wall of the side wall 202 near the dust cup top cover 204. The outer periphery of the top plate 203 is sealed to the inner wall of the side wall 202, and a top plate air cavity 2032 is formed between the top plate 203 and the dust cup top cover 204. The bottom cover 201, the top plate 203, and part of the side wall 202 define a first separation cavity 21; the bottom cover 201, the top plate 203, and another part of the side wall 202 define a second separation cavity 22.

[0067] A first intake port 2021 is provided on the side wall 202 forming the first separation chamber 21, near the top plate 203. A first exhaust port 2031 is provided on the top plate 203, opposite the first separation chamber 21. In some other embodiments, the first exhaust port 2031 is positioned towards the center of the first separation chamber 21. The first intake port 2021 is tangent to the inner wall of the side wall 202, so that the airflow drawn in from the nozzle assembly 1 enters the first separation chamber 21 along the first intake port 2021, rotates downward along the inner wall of the first separation chamber 21, and generates centrifugal force. The airflow uses centrifugal force to separate dust and gas within the first separation chamber 21. The separated dust and other impurities fall onto the bottom cover 201 and remain in the first separation chamber 21. The separated gas flows out of the first separation chamber 21 from the first exhaust port 2031 and then enters the top plate air chamber 2032.

[0068] When it is necessary to clean the dust and other impurities remaining in the first separation chamber 21, simply remove the bottom cover 201 from the side wall 202 and pour out the dust and other impurities.

[0069] In some other embodiments, referring to Figures 5 and 6, a first filter element 22 is provided in the first separation chamber 21, covering the first outlet 2031. The gas after dust-air separation in the first separation chamber 21 first passes through the first filter element 22 for further filtration and dust removal. The filtered impurities remain on the outer surface of the first filter element and / or fall onto the bottom cover 201. The filtered clean gas is discharged from the first outlet 2031. By using the first filter element 22 to filter the gas, the air cleaning effect is improved, and damage to components such as the fan 37 in the subsequent airflow generation assembly is prevented, thus extending the overall service life of the vacuum cleaner.

[0070] In some embodiments, as shown in Figures 5 and 6, the first filter element 22 includes a first filter base 221, a cylindrical filter portion 223 disposed on the first filter base 221, and a planar filter portion 222 disposed on the first filter base and surrounding the outer periphery of the cylindrical filter portion 223. The outer diameter of the cylindrical filter portion 223 is smaller than the outer diameter of the first filter base 221. The cylindrical filter portion 223 extends upward from the first filter base 221, and its upper end away from the first filter base 221 connects with the first discharge outlet 2031. The bottom of the first filter base 221 is open. An airflow space is formed between the first filter base 221 and the inner wall of the first separation chamber 21 and the inner surface of the bottom cover 201. An airflow space is also formed between the cylindrical filter portion 223 and the inner wall of the first separation chamber 21. The gas separated from the dust in the first separation chamber 21 enters the interior of the cylindrical filter portion 223 through the planar filter portion 222 and the cylindrical filter portion 223, and then continues to flow upward to the first discharge outlet 2031 and is discharged.

[0071] In some embodiments, the planar filter section 222 is a filter screen disposed on the first filter base 221; in other embodiments, the planar filter section 222 is a plurality of air holes formed on the first filter base 221. In some embodiments, the cylindrical filter section 223 is a filter plate with a plurality of air holes disposed on the first filter base 221; in other embodiments, the cylindrical filter section 223 includes a filter frame disposed on the first filter base 221 and a cylindrical filter screen disposed on the filter frame.

[0072] In other embodiments, referring to the cross-sectional view of another embodiment of the vacuum cleaner proposed by the present invention shown in FIG15, the partial structural schematic diagram of the dust cup assembly in this embodiment shown in FIG16, and the structural schematic diagram of the first filter element shown in FIG17, the first filter element 22 includes a first filter base 224 and a cylindrical filter portion 225 disposed on the first filter base 224. The outer diameter of the cylindrical filter portion 225 is smaller than the outer diameter of the first filter base 224. The cylindrical filter portion 225 extends upward from the first filter base 224, and the upper end of the cylindrical filter portion 225 away from the first filter base 224 is connected to the first discharge port 2031. A plurality of notches 2241 are formed on the first filter base 224, and a planar filter portion 2242 surrounding the outer periphery of the cylindrical filter portion 225 is also provided on the first filter base 224. In some embodiments, two notches 2241 are symmetrically formed on the first filter base 224, as shown in FIG17. In other embodiments, three or four notches 2241 may also be formed on the first filter base 224. In some embodiments, multiple notches are evenly distributed on the first filter base 224 to improve the uniformity of airflow. The outer periphery of the first filter base 224 is adapted to the shape of the inner wall of the first separation chamber 21. For example, in some embodiments, the inner wall of the first separation chamber 21 is cylindrical, and the outer periphery of the first filter base 224 is circular. The outer periphery of the first filter base 221 is close to but does not contact the inner wall of the first separation chamber 21, or the first filter base 221 abuts against the inner wall of the first separation chamber 21. An airflow space is formed between the bottom surface of the first filter base 221 and the inner surface of the bottom cover 201, and an airflow space is also formed between the cylindrical filter part 225 and the inner wall of the first separation chamber 21. After the airflow drawn in from the nozzle assembly 1 enters the first separation chamber 21 through the first suction port 2021, it rotates downward along the inner wall of the first separation chamber 21, generating centrifugal force. The airflow rotates downward along the notch 2241 on the first filter base 224 to the bottom of the first separation chamber 21, and dust and other impurities are retained on the bottom cover 201. The clean gas after dust-gas separation passes through the planar filter section 2242, then through the cylindrical filter section 225 and continues to flow upward, finally exiting from the first outlet 2031. The first filter element 22 further filters the gas after dust-gas separation, retaining as much dust and other impurities as possible within the first separation chamber 21, improving air cleaning efficiency and preventing damage to components such as the fan 37 in the subsequent airflow generation assembly. Furthermore, since the outer periphery of the first filter base 224, except for the notch 2241, is close to and / or abuts against the inner wall of the first separation chamber 21, the separated dust can be compressed and confined between the first filter base 224 and the bottom cover 201, preventing dust from scattering throughout the first separation chamber 21 or even being carried out of the first separation chamber 21 by the airflow.This effectively avoids the problem of dust scattering and / or being carried out, which would affect the dust-air separation effect of the first separation chamber 21 and reduce cleaning efficiency. It also effectively reduces the frequency of cleaning the dust cup assembly 2 due to dust scattering in the first separation chamber 21, further improving cleaning efficiency.

[0073] In some embodiments, the planar filter section 2242 is a filter screen disposed on the first filter base 224; in other embodiments, the planar filter section 2242 is a plurality of air holes formed on the first filter base 224. In some embodiments, the cylindrical filter section 225 is a filter plate with a plurality of air holes disposed on the first filter base 224; in other embodiments, the cylindrical filter section 225 includes a filter frame disposed on the first filter base 224 and a cylindrical filter screen disposed on the filter frame.

[0074] In other embodiments, referring to the cross-sectional view of another embodiment of the vacuum cleaner proposed by this utility model shown in FIG18 and the structural schematic diagram of the first filter element shown in FIG19, the first filter element 22 includes a filter cylinder 226, which has an open structure at both the bottom and the top. An air flow space is formed between the lower opening and the bottom cover 201, and the upper opening is connected to the first outlet 2031. An air flow space is also formed between the filter cylinder 226 and the inner wall of the first separation chamber 21. A first layer filter 227 and a second layer filter 228 are provided in the internal cavity of the filter cylinder 226. The first layer filter 227 is located in the lower layer, closer to the bottom opening of the filter cylinder 226; the second layer filter 228 is located in the upper layer, closer to the top opening of the filter cylinder 226. The airflow drawn in from the nozzle assembly 1 enters the first separation chamber 21 through the first suction port 2021 and rotates downward along the inner wall of the first separation chamber 21, generating centrifugal force. The airflow uses centrifugal force to separate dust and gas in the first separation chamber 21. The separated dust and other impurities fall onto the bottom cover 201 and remain in the first separation chamber 21. The clean gas after dust and gas separation flows upward and is filtered through the first filter section 227. The filtered dust and other impurities fall downward into the space between the bottom cover 201 and the first filter section 227. The filtered clean gas continues to flow upward and is filtered again through the second filter section 228. The filtered clean gas continues to flow upward and is finally discharged from the first outlet 2031.

[0075] By utilizing the first filter element 22 with two layers of filtration, the gas after dust-gas separation can be further filtered twice, retaining as much dust and other impurities as possible within the first separation chamber 21. This improves the air cleaning effect and prevents damage to components such as the fan 37 in the subsequent airflow generation assembly. The first layer of filtration 227 located at the bottom compresses and confines the separated dust and other impurities as much as possible between the bottom cover 201 and the first layer of filtration 227, preventing dust from scattering throughout the first separation chamber 21 or being carried out of it by the airflow. This effectively avoids the problem of dust scattering and / or being carried out, which affects the dust-gas separation effect of the first separation chamber 21 and reduces cleaning efficiency. It also effectively reduces the frequency of cleaning the dust cup assembly 2 due to dust scattering within the first separation chamber 21, further improving cleaning efficiency.

[0076] In some embodiments, as shown in FIG18, the first filter layer 227 is generally inverted V-shaped, with the opening of the inverted V facing the bottom of the filter cylinder 226, and the outer periphery of the inverted V-shaped structure abutting against the inner wall of the filter cylinder 226. The second filter layer 228 is generally V-shaped, with the opening of the V facing the top of the filter cylinder 226, and the outer periphery of the V-shaped structure abutting against the inner wall of the filter cylinder 226. By setting the first filter layer 227 and the second filter layer 228 as V-shaped structures, the filtration area can be increased and the airflow filtration efficiency can be improved.

[0077] In some embodiments, the top end of the second filter layer 228 and the first outlet 2031 are vertically spaced by a certain distance L1. By setting a certain distance between the top end of the second filter layer 228 and the first outlet 2031 in the vertical direction, a larger airflow space can be formed between the second filter layer 228 and the first outlet 2031, which slows down the outflow speed of the air from the first outlet 2031, reduces airflow noise, and prevents dust from being carried out of the first separation chamber 21 due to excessively fast flow, thereby further improving the filtration and cleaning effect.

[0078] In some embodiments, to balance the smoothness of airflow and the dust filtration effect, the V-angle A of the first filter layer 227 is in the range of 90-135°. Correspondingly, the V-angle B of the second filter layer 228 is also in the range of 90-135°.

[0079] In some embodiments, as shown in FIG18, the filter body portions of the first filter layer 227 and the second filter layer 228 are planar. That is, in the cross-sectional view of FIG18, the outlines of the two inclined sides of the V-shaped two-layer filter are straight lines.

[0080] In some other embodiments, the filter bodies of the first filter layer 227 and the second filter layer 228 are spherical. That is, as shown in the cross-sectional view of FIG18, the outlines of the two inclined sides of the V-shaped two-layer filter are arcs. Using a spherical filter provides a larger filtration area and facilitates the cleaning of dust and other impurities from the filter.

[0081] In some embodiments, the first layer filter 227 is a filter plate with multiple air holes, and the second layer filter 228 is a filter plate with multiple air holes; in other embodiments, the first layer filter 227 includes a filter frame and a filter screen disposed on the filter frame, and the second layer filter 228 includes a filter frame and a filter screen disposed on the filter frame.

[0082] Referring again to Figures 5, 6, and 7, the second separation chamber 23 is located on one side of the first separation chamber 21, and is on the side away from the nozzle assembly 1. In the cross-sectional view of Figure 5, the nozzle assembly 1 is located to the right of the first separation chamber 21, and the second separation chamber 23 is located to the left of the first separation chamber 21.

[0083] To ensure smooth and stable airflow into the second separation chamber 23 for dust-air separation, in some embodiments, the dust cup assembly 2 further includes a second suction section 241. The second suction section 241 includes a second suction inlet 2411 and a second guide plate 2412. The second suction inlet 2411 is formed on the top plate 203, and the second guide plate 2412 extends upward along a portion of the opening edge of the second suction inlet 2411 to the bottom surface of the dust cup top cover 204, abutting against the bottom surface of the dust cup top cover 204. The second guide plate 2412 includes a first guide section 24121 that matches a portion of the opening edge of the second suction inlet 2411 and a second guide section 24122 extending towards the first discharge outlet 2031. An airflow inlet 24123 is formed between the free end of the first guide section 24121 and the free end of the second guide section 24122, and the airflow inlet 24123 faces the first discharge outlet 2031.

[0084] In some embodiments, the dust cup assembly 2 further includes a second separation section 242 located within the second separation chamber 23 and an airflow outlet pipe 244 partially located within the second separation section 242. The second separation section 242 extends from the second suction port 2411 into the second separation chamber 23 to form a cylindrical body, with a dust discharge port 243 formed at the bottom of the cylindrical body. The dust discharge port 243 is vertically spaced at a distance L2 from the bottom of the second separation chamber 23. The airflow outlet pipe 244 partially extends into the second separation section 242 and partially extends upward to the dust cup top cover 204, and connects with the second discharge port 2041 provided on the dust cup top cover 204. The bottom end of the portion of the airflow outlet pipe 244 extending into the second separation section 242 is vertically spaced at a distance L3 from the dust discharge port 243.

[0085] The airflow exiting from the first outlet 2031 enters the top plate air chamber 2032 and continues to flow towards the airflow inlet 24123. Guided by the second guide plate 2412, the airflow enters the second separation section 242 tangentially along its inner wall, rotates downwards along the inner wall, and generates centrifugal force for a second dust-air separation. The dust and other impurities after the second dust-air separation fall from the dust outlet 243 into the accommodating space of the second separation chamber 23 below the second separation section 242, while the separated clean gas flows upwards to the airflow outlet pipe 244, flows upwards along the airflow outlet pipe 244, and finally exits from the second outlet 2041.

[0086] When it is necessary to clean the dust and other impurities remaining in the second separation chamber 23, simply remove the bottom cover 201 from the side wall 202 and pour out the dust and other impurities.

[0087] By setting a second separation section 242 in the second separation chamber 23, and setting an airflow outlet pipe 244 in the second separation section 242, and setting a dust discharge port 243 with a certain distance from the bottom of the second separation chamber 23 to form a certain accommodating space between the second separation section 242 and the second separation chamber 23, and setting the bottom end of the airflow outlet pipe 244 with a certain distance from the dust discharge port 243 in the vertical direction, secondary dust and gas separation is performed using the second separation section 242. The separated clean gas is discharged through the airflow outlet pipe 244, and the separated dust and other impurities are stored in the accommodating space below the second separation section 242. This can reduce the airflow in the area where dust and other impurities are stored in the second separation chamber 23, reduce the swirling of dust and other impurities, prevent dust and other impurities from being carried out by the discharged airflow, and improve the dust and gas separation effect.

[0088] In some embodiments, the inner diameter of the cylinder of the second separation section 242 gradually narrows from top to bottom, forming an inverted frustum shape. By setting the inner diameter of the second separation section 242 to gradually narrow from top to bottom, the airflow entering the second separation section 242 will accelerate and spiral down within the second separation section 242, improving the speed and efficiency of dust and gas separation.

[0089] In some embodiments, the number of second separation chambers 23 may be one or more. In the embodiment shown in FIG6, the number of second separation chambers 23 is four. When multiple second separation chambers 23 are provided, each separation chamber is independent of each other, and each separation chamber 23 is provided with a second suction section 241, a second separation section 242, and an airflow outlet pipe 244.

[0090] In some embodiments, as shown in Figures 5 and 6, an upwardly protruding protrusion 2042 is formed on the dust cup top cover 204 at a position corresponding to the first outlet 2031. By forming the protrusion 2042 on the dust cup top cover 204, the inner wall of the protrusion 2042 (in Figure 5, the inner wall refers to the lower surface of the protrusion 2042) is far away from the first outlet 2031, thereby creating a larger airflow space between the first outlet 2031 and the protrusion 2042, which facilitates the smooth discharge of airflow from the first outlet 2031 into the top plate air cavity 2032.

[0091] Referring to the partial outer shell assembly structure diagram in Figure 8, the partial outer shell cross-sectional view in Figure 9, and the exploded view of the airflow generating component in Figure 10, and in conjunction with Figures 1 to 7, the structure of the airflow generating component 3 will be described in detail.

[0092] The airflow generating assembly 3 includes a fan housing 31, an air duct 32, a fan housing 33, and a fan 37. The fan housing 33 is located inside the fan housing 31, forming a fan inlet channel 34 between the fan housing 31 and the fan housing 33. The fan 37 is disposed inside the fan housing 33, forming a fan outlet channel 36 between the fan housing 33 and the fan 37. The fan inlet channel 34 and the fan outlet channel 36 are interconnected. The fan inlet channel 34 is also connected to the second separation chamber 23 of the dust cup assembly 2, and the fan outlet channel 36 is connected to the exhaust chamber of the exhaust assembly 4. The fan housing 31 has an annular structure, and the fan housing 33 also has an annular structure. The fan housing 31 is fitted around the outer periphery of the fan 33; therefore, the fan inlet channel 34 surrounds the outer periphery of the fan 37. By surrounding the fan inlet channel around the fan, the uniformity of airflow can be increased, and it is easier to achieve a compact and miniaturized design of the overall structure of the airflow generating assembly.

[0093] In some embodiments, as shown in FIG10, a fan inlet 331 is provided at the left end of the fan housing 33, and the air outlet of the fan inlet channel 34 and the air inlet of the fan outlet channel 36 are connected through the fan inlet 331.

[0094] The air inlet end of the fan inlet channel 34 is located near the dust cup assembly 2 and the exhaust assembly 4. Specifically, in the structure shown in Figure 5, the air inlet end of the fan inlet channel 34 is located at the right end of the fan housing 31. Furthermore, the air inlet end of the fan inlet channel 34 is close to the second outlet 2041 of the dust cup assembly 2. The air outlet end of the fan inlet channel 34 is located away from the dust cup assembly 2 and the exhaust assembly 4. Specifically, in the structure shown in Figure 5, the air outlet end of the fan inlet channel 34 is located at the left end of the fan housing 31. The air inlet end of the fan outlet channel 36 is close to the air outlet end of the fan inlet channel 34, while the air outlet end of the fan outlet channel 36 is close to the exhaust assembly 4. Specifically, in the structure shown in Figure 5, the air inlet end of the fan outlet channel 36 is located at the left end, and the air outlet end of the fan outlet channel 36 is located at the right end.

[0095] A diversion duct 32 is disposed between the fan inlet channel 34 and the second outlet 2041 of the dust cup assembly 2, and is used to guide the airflow discharged from the second outlet 2041 to the fan inlet channel 34. The diversion duct extends from the outer periphery of the second outlet 2041 toward the fan inlet channel 34.

[0096] In some embodiments, the air duct 32 guides the airflow discharged from the second outlet 2041 into the fan inlet channel 34 along the tangential direction of the inner wall of the fan housing 31, so that the airflow generates centrifugal force in the fan inlet channel 34, thereby improving the dust-air separation effect.

[0097] In some embodiments, the air duct 32 is independent of the fan housing 31 and is sealed to the fan housing 31. In some embodiments, as shown in FIG9, the air duct 32 is integrally formed with the fan housing 31.

[0098] In some embodiments, a second filter element 35 is provided in the fan inlet channel 34 to filter and remove dust from the airflow entering the fan inlet channel 34. The filtered dust and other impurities remain on the second filter element 35, and the filtered clean air enters the fan outlet channel 36. By providing a second filter element 35 in the fan inlet channel 34 to further filter the air after dust separation by the dust cup assembly, the air cleaning effect is improved, and dust-laden air is prevented from entering the fan outlet channel 36 and damaging the fan 37, thus extending the service life of the vacuum cleaner as a whole.

[0099] In some embodiments, as shown in FIG10, the second filter element 35 includes a filter body frame 352 on which a filter body is disposed. In some embodiments, the filter body is a flexible filter screen; in other embodiments, the filter body is a porous filter material. Adapted to the annular structure of the fan housing 31 and the fan housing 33, the filter body frame 352 is also annular and surrounds the outer periphery of the fan housing 33. Therefore, the filter body placed on the filter body frame 352 also surrounds the outer periphery of the fan housing 33, thereby effectively filtering the airflow entering the fan inlet and improving the filtration effect.

[0100] In some embodiments, referring to Figures 8, 9, and 10, the fan housing 31 includes a fan housing sidewall 311, a front cover 312, and a rear cover 313. The fan housing sidewall 311 has an annular structure. The front cover 312 is located at the end of the fan housing sidewall 311 away from the exhaust assembly 4, and the rear cover 313 is located at the end of the fan housing sidewall 311 close to the exhaust assembly 4. The front cover 312 is connected to the fan housing sidewall 311, and an annular opening 314 is formed between the ends of the front cover 312 and the fan housing sidewall 311. The rear cover 313 is connected to the fan housing sidewall 311, and a rear cover opening 3131 is formed on the rear cover 313. This rear cover opening 3131 serves as the final airflow outlet of the airflow generating assembly, corresponding to the fan outlet on the fan housing 33, and communicating with the fan outlet channel 36. The second filter element 35 also includes an external end 351, which is located at one end of the filter body frame 352, specifically at the end of the filter body frame 352 near the front cover 312. The external end 351 is connected to the filter body frame 352. In the assembled structure, the filter body frame 352 and the filter element thereon are placed in the fan inlet channel 34 between the fan housing 31 and the fan housing 33. The external end 351 is sealed to the annular opening 314, and at least part of the external end 351 is exposed. By operating the external end 351, the filter body frame 352 and the filter element thereon can be pulled out of the fan inlet channel 34, or the filter body frame 352 and the filter element thereon can be inserted into the fan inlet channel 34. After pulling the filter body frame 352 and the filter element thereon out of the fan inlet channel 34, dust and other impurities on the filter element can be cleaned, the filter element can be washed, or the filter element can be replaced.

[0101] In some embodiments, the filter body frame 352 and the filter element thereon are pulled apart and retracted from the fan housing 31 via a sliding structure, improving assembly and disassembly efficiency and convenience. In some embodiments, the sliding structure is a combination of a slide rail and a slide groove. In some embodiments, the sliding structure is a combination of a guide wheel and a guide rail.

[0102] In some other embodiments, the second filter element 35 is filter material that fills the entire fan inlet channel 34.

[0103] In some other embodiments, a display module is provided on the fan housing 31. The display module is connected to the control module of the vacuum cleaner and displays information or indications such as the vacuum cleaner's power level, operating mode, fan speed, and fault reminders. In some embodiments, the display module is located on the front cover 312 of the fan housing 31.

[0104] In some embodiments, the fan housing 31, the fan housing 33, and the fan 37 are assembled using the following structure:

[0105] The rear end of the fan 37 is mounted to the rear end cover 313 constituting the fan housing 31 via the fan base 38, and the front end of the fan 37 is mounted to the fan housing 33. The rear end of the fan housing 33 is mounted to the rear end cover 313, and its front end is mounted to the front end cover 312 constituting the fan housing 31 via the connector 39. Thus, the fan 37 is laterally mounted within the fan housing with a simple structure, and the overall structure of the airflow generating component is compact and miniaturized.

[0106] Referring to the exploded view of the air outlet assembly in Figure 11, the cross-sectional view of the air outlet inner shell in Figure 12, and the bottom view of the air outlet inner shell in Figure 13, and in conjunction with Figures 1 to 10, the structure of the exhaust assembly 4 will be described in detail.

[0107] The exhaust assembly 4 includes an exhaust housing 41, an exhaust inner housing 42, and an exhaust top cover 47. The exhaust inner housing 42 is located within the space enclosed by the exhaust housing 41 and the exhaust top cover 47. The exhaust housing 41, the exhaust inner housing 42, and the exhaust top cover 47 together define the exhaust chamber of the exhaust assembly 4.

[0108] In some embodiments, the exhaust housing 41 serves as the exhaust housing of the exhaust assembly 4; in some embodiments, the exhaust housing 41 and the exhaust inner housing 42 together serve as the exhaust housing of the exhaust assembly 4.

[0109] The exhaust housing 41 has an overall annular structure. Its bottom end is sealed to the dust cup housing 20 in the dust cup assembly 2, and its top end is sealed to the exhaust top cover 47. The end of the exhaust housing 41 near the airflow generating assembly 3 is connected to the fan housing 31. The exhaust housing 41 has an exhaust housing opening on the side near the fan housing 31.

[0110] The exhaust inner shell 42 has an overall annular structure and is located above the dust cup top cover 204 in the dust cup assembly 2, with its bottom end connected to the dust cup top cover 204. An exhaust inlet 421 is provided at one end of the exhaust inner shell 42 near the airflow generating assembly 3. The exhaust inlet 421 serves as the air inlet of the exhaust chamber of the exhaust assembly 4 and is connected to the air outlet end of the fan outlet channel 36 of the airflow generating assembly 3 through the exhaust outer shell opening. In some embodiments, the exhaust inlet 421 is connected to the rear cover opening 3131.

[0111] An exhaust partition plate 43 is provided inside the exhaust inner shell 42. The exhaust partition plate 43 has a rotating air duct outlet 431, thereby dividing the internal cavity of the exhaust inner shell 42 into two connected cavities, upper and lower. A rotating air outlet device 44 is provided in the lower cavity of the exhaust partition plate 43, and a third filter element 45 is provided in the upper cavity of the exhaust partition plate 43.

[0112] In some embodiments, the lower cavity of the exhaust partition plate 43 is higher than the upper cavity, so as to provide a longer rotating air outlet duct using the lower cavity. In some embodiments, the rotating air outlet 431 is located in the middle of the exhaust partition plate 43 to achieve uniform airflow within the exhaust cavity.

[0113] The rotating air outlet device 44 includes a rotating air duct shell 441, which defines a rotating air duct 442. The air inlet of the rotating air duct 442 is connected to the air exhaust inlet 421, and the air outlet of the rotating air duct 442 is connected to the air outlet 431.

[0114] The third filter element 45 is an annular body surrounding the outer periphery of the rotary air duct outlet 431. The third filter element 45 extends upward from the upper surface of the exhaust partition plate 43 to near the exhaust top cover 47. A certain space is left between the outer edge of the third filter element 45 and the inner wall of the exhaust inner shell 42. The upper surface of the exhaust partition plate 43, the third filter element 45, the inner wall of the exhaust inner shell 42, and the exhaust top cover 47 together define the exhaust air duct 46. The air inlet of the exhaust air duct 46 is connected to the rotary air duct 442 through the rotary air duct outlet 431, and the air outlet of the exhaust air duct 46 is connected to the top cover exhaust port 473 on the exhaust top cover 47.

[0115] The airflow from the airflow generating component 3 enters the rotating air duct 442 through the exhaust inlet 421, flows out of the rotating air outlet 431 of the rotating air duct, exits the rotating air outlet 44, and then flows to the third filter 45. The clean air, further filtered by the third filter 45, enters the exhaust air duct 46 and continues to flow upwards, finally exiting from the top cover exhaust outlet 473. By setting up the rotating air duct 442 and the exhaust air duct 46, the length of the exhaust air duct located at the rear end of the fan 37 is increased, thereby extending the overall airflow exhaust duct length inside the vacuum cleaner, further reducing the exhaust air velocity and noise. The third filter 45 further filters the air, improving the cleanliness of the exhaust air and further enhancing the vacuum cleaner's suction effect.

[0116] In some embodiments, referring to Figures 12 and 13, the rotating air duct shell 441 includes an inner ring air duct shell 4411, which is a non-closed annular structure with an inner ring air duct inlet 4412. The inner ring air duct shell 4411 is located in the middle of the lower cavity and forms an annular air duct with the shell of the exhaust inner shell 42 that forms the lower cavity. The bottom end of the inner ring air duct shell 4411 and the inner ring air duct inlet 4412 are away from the exhaust air intake 421 on the exhaust inner shell 42. In some embodiments, the inner ring air duct inlet 4412 faces away from the exhaust air intake 421, thereby dividing the annular air duct from the exhaust air intake 421 to the inner ring air duct inlet 4412 into two paths, namely a first diversion air duct 4421 and a second diversion air duct 4422.

[0117] Referring to the wind direction indicated by the arrow in Figure 13, the airflow flowing in from the exhaust inlet 421 is split into two: one flows along the first branching duct 4421 to the inner ring duct inlet 4412, and the other flows along the second branching duct 4422 to the inner ring duct inlet 4412. The two airflows converge within the cavity of the inner ring duct shell 4411 and then exit from the rotating duct outlet 431. By positioning the inner ring duct inlet 4412 away from the exhaust inlet 421 on the exhaust inner shell 42, the annular duct between the exhaust inlet 421 and the inner ring duct inlet 4412 is divided into two paths, achieving dual exhaust to the inner ring duct shell 4411, increasing the exhaust air volume and improving the overall airflow of the unit.

[0118] In some embodiments, referring to Figure 13, a first guide shell 4413 is provided in the first diversion duct 4421 near the air inlet 4412 of the inner ring duct, and a second guide shell 4414 is provided in the second diversion duct 4422 near the air inlet 4412 of the inner ring duct. One end of the first guide shell 4413 is connected to the exhaust inner shell 42, and the other end is near the air inlet 4412 of the inner ring duct; one end of the second guide shell 4414 is connected to the exhaust inner shell 42, and the other end is near the air inlet 4412 of the inner ring duct. By providing the first guide shell 4413 and the second guide shell 4414, the airflow in the diversion channel can be smoothly guided into the cavity of the inner ring duct shell 4411.

[0119] In some embodiments, both the first flow guide shell 4413 and the second flow guide shell 4414 are arc-shaped shells.

[0120] In some embodiments, referring to the bottom view of another embodiment of the exhaust inner shell shown in FIG. 14, the rotating air duct shell 441 includes a spiral air duct shell 4415. The outer end of the spiral air duct shell 4415 is sealed to the inner wall of the exhaust inner shell 42 near the exhaust air inlet 421, and a spiral air duct inlet 4416 is formed at the inner end of the spiral air duct shell 4415. The bottom end of the spiral air duct shell 4415 is connected to the dust cup top cover 204 and extends upward from the dust cup top cover 204 until it abuts against the lower bottom surface of the exhaust partition plate 43 and connects with the rotating air duct outlet 431. A spiral rotating air duct 442 is formed between the spiral air duct shell 4415 and the shell of the exhaust inner shell 42 forming the lower cavity, as well as between the spiral air duct shell 4415 itself. Referring to the wind direction indicated by the arrow in Figure 14, the airflow flowing in from the exhaust inlet 421 rotates within the rotating duct 442, enters the innermost cavity of the spiral duct shell 4415 through the spiral duct inlet 4416, and then flows out from the rotating duct outlet 431. The use of the spiral duct shell 4415 to form a multi-circulation rotating duct greatly increases the length of the exhaust duct located at the rear end of the fan 37, reduces the exhaust air velocity, and decreases exhaust noise.

[0121] In some embodiments, the third filter element 45 includes a bottom frame 451, a top cover 452, and a filter element 453 located between the bottom frame 451 and the top cover 452. The bottom frame 451 is fitted to the upper surface of the exhaust partition plate 43, and the top cover 452 is fitted to the exhaust top cover 47. The filter element 453 has an annular structure, and correspondingly, the bottom frame 451 has an annular structure, and the top cover 452 has a disc-shaped structure. By configuring the third filter element 45 with a structure having a bottom frame 451 and a top cover 452, it is convenient to seal the third filter element 45 with other structural components.

[0122] In some embodiments, the filter element 453 uses a HEPA filter. In some embodiments, the bottom frame 451 is made of a soft rubber material to facilitate sealing between the bottom frame 451 and the exhaust partition plate 43. The top cover 452 is made of a rigid composite material to facilitate its assembly with the exhaust top cover 47 and / or the exhaust housing 41 and / or the exhaust inner housing.

[0123] Referring again to Figures 1 to 5 and Figure 11, the exhaust cover 47 includes a cover flange 471, a cover plate 472, and a cover exhaust port 473. The cover flange 471 is folded downwards, and several slots 4711 are provided on the outer wall of the cover flange 471. The exhaust housing 41 has locking protrusions that cooperate with the slots 4711 to achieve a snap-fit. The exhaust cover 47 is detachably assembled with the exhaust housing 41 through the slots 4711. The cover plate 472 is located in the middle of the exhaust cover 47, and the cover exhaust port 473 surrounds the outer periphery of the cover plate 472 and communicates with the exhaust duct 46. An operating part 4721 is provided on the top cover plate 472. Using the operating part 4721, the exhaust top cover 47 can be rotated to install the exhaust top cover 47 onto the exhaust housing 41, or the exhaust top cover 47 can be removed from the exhaust housing 41.

[0124] In some embodiments, the exhaust top cover 47 is not connected to the third filter element 45. After the exhaust top cover 47 is removed from the exhaust housing 41 using the operating part 4721, the third filter element 45 is removed from the exhaust inner housing 42 and taken out to clean dust and other impurities on the third filter element 45, and to clean or replace the third filter element 45.

[0125] In some embodiments, the exhaust top cover 47 is connected to the third filter element 45. When the exhaust top cover 47 is removed from the exhaust housing 41 using the operating part 4721, the exhaust top cover 47 and the third filter element 45 are removed together, so that dust and other impurities on the third filter element 45 can be cleaned, and the third filter element 45 can be cleaned or replaced.

[0126] In some embodiments, as shown in FIG11, the operating part 4721 is at least two grooves or handles formed on the top cover plate 472 to facilitate rotation of the exhaust top cover 47.

[0127] Referring again to Figures 1 to 3, 5, and 8, the handle assembly 5 includes a handle housing, which includes a grip portion 51 and a connecting portion 52, forming a gripping space 53 between the grip portion 51 and the connecting portion 52. The gripping space 53 can accommodate the hand and provides space for flexible hand movement, facilitating a firm grip on the grip portion 51 with the entire hand. The connecting portion 52 includes a horizontally arranged horizontal connecting portion 521 and a vertically arranged vertical connecting portion 522. The bottom end of the vertical connecting portion 522 is connected to the end of the horizontal connecting portion 521 near the dust cup assembly 2, forming an L-shaped structure with the horizontal connecting portion 521. The top end of the vertical connecting portion 522 is connected to the end of the fan housing 31 of the airflow generating assembly 3 near the exhaust assembly 4, and the entire vertical connecting portion 522 is also connected to the dust cup shell 20 of the dust cup assembly 2. The bottom end of the grip 51 is connected to the horizontal connecting part 521 at a position away from the vertical connecting part 522, and the top end of the grip 51 is connected to the end of the fan housing 31 away from the exhaust assembly 4. As a result, the weight of the fan 37, which is horizontally arranged inside the airflow generating assembly 3, is distributed and supported by the grip 51 and the connecting part 52, making it easier and less strenuous to lift the vacuum cleaner using the handle assembly 5.

[0128] In some embodiments, the grip 51 is tilted and its bottom end moves away from the dust cup assembly 2, so that the bottom end of the grip 51 is further away from the center of gravity of the vacuum cleaner in the horizontal direction, making it easier and more stable to lift the vacuum cleaner for cleaning operations.

[0129] Referring again to Figures 1 to 3 and Figure 5, the power supply assembly 6, which powers the vacuum cleaner, is located at the lower part of the handle assembly 5. By placing the power supply assembly 6 below the handle assembly 5, the weight can be balanced with the airflow generating assembly 3 located above the handle assembly 5. This makes it easier and less strenuous to lift the vacuum cleaner using the handle assembly 5 when in use, and allows it to be placed stably when not in use.

[0130] In some embodiments, the power supply assembly 6 includes a power housing 61 and a power supply 62 located inside the power housing 61. The power housing 61 is detachably assembled with the handle assembly 5. By adopting a detachable assembly structure between the power supply assembly 6 and the handle assembly 5, it is easy to disassemble the power supply assembly 6 to facilitate the handling of the power supply 62 in the power supply assembly 6.

[0131] In some other embodiments, the vacuum cleaner may not include the power supply assembly 6, and may be powered by an external power source.

[0132] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by this utility model.

Claims

1. An exhaust assembly for a vacuum cleaner, characterized in that, The exhaust assembly includes: an upper cavity containing a third filter; a lower cavity located below and connected to the upper cavity, containing a rotating air outlet; and an exhaust inlet connected to the lower cavity. Gas flowing from the gas treatment device upstream of the vacuum cleaner enters the rotating air outlet through the exhaust inlet, flows within the rotating air outlet, and then flows upwards to the third filter. The gas filtered by the third filter is then discharged upwards through the exhaust outlet of the exhaust assembly.

2. The exhaust assembly of the vacuum cleaner according to claim 1, characterized in that, The exhaust assembly includes: an exhaust housing with an annular structure, wherein the exhaust inlet is formed on the exhaust housing; an exhaust top cover located at the top of the exhaust housing and connected to the exhaust housing, wherein a top cover exhaust port is provided; and an exhaust partition plate disposed inside the exhaust housing, wherein a rotating air duct outlet is provided, which divides the internal cavity of the exhaust housing into an upper cavity and a lower cavity, wherein the upper cavity and the lower cavity are connected through the rotating air duct outlet.

3. The exhaust assembly of the vacuum cleaner according to claim 2, characterized in that, The rotating air outlet device includes a rotating air duct shell, which defines a rotating air duct. The air inlet of the rotating air duct is connected to the exhaust air inlet, and the air outlet of the rotating air duct is connected to the air outlet of the rotating air duct.

4. The exhaust assembly of the vacuum cleaner according to claim 3, characterized in that, The rotating air duct shell includes a spiral air duct shell, the outer end of which is sealed to the inner wall of the exhaust shell near the exhaust air inlet, and the inner end of which forms a spiral air duct inlet; a spiral rotating air duct is formed between the spiral air duct shell and the exhaust shell forming the lower cavity, as well as between the spiral air duct shell itself.

5. The exhaust assembly of the vacuum cleaner according to any one of claims 2 to 4, characterized in that, The third filter element is an annular body surrounding the outer periphery of the rotary air duct outlet. The third filter element extends upward from the upper surface of the exhaust partition plate to near the exhaust top cover. A space is left between the outer edge of the third filter element and the inner wall of the exhaust housing. The upper surface of the exhaust partition plate, the third filter element, the inner wall of the exhaust housing, and the exhaust top cover together define the exhaust air duct. The air inlet of the exhaust air duct is connected to the lower cavity through the rotary air duct outlet, and the air outlet of the exhaust air duct is connected to the top cover exhaust port on the exhaust top cover.

6. The exhaust assembly of the vacuum cleaner according to claim 5, characterized in that, The third filter element includes: a bottom frame, which is assembled with the upper surface of the exhaust partition plate; a top cover, which is assembled with the exhaust top cover; and a filter element, which is located between the bottom frame and the top cover.

7. The exhaust assembly of the vacuum cleaner according to any one of claims 2 to 4, characterized in that, The exhaust cover includes: a top cover flange that folds downwards, with several slots provided on the outer side wall of the flange; a top cover disc located in the middle of the exhaust cover; an exhaust port surrounding the outer periphery of the top cover disc; and a protrusion on the exhaust housing that matches the slots, allowing the exhaust cover to be detachably assembled with the exhaust housing via the slots and protrusions.

8. The exhaust assembly of the vacuum cleaner according to claim 7, characterized in that, An operating part is provided on the top cover plate. By operating the operating part, the exhaust top cover is rotated to detach the exhaust top cover from the exhaust housing.

9. The exhaust assembly of the vacuum cleaner according to claim 8, characterized in that, The operating part includes two or more grooves or handles.

10. A vacuum cleaner, characterized in that, The vacuum cleaner includes the exhaust assembly of the vacuum cleaner as described in any one of claims 1 to 9.

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