CN221511749U - Airflow generator of dust collector and dust collector - Google Patents

Abstract

The utility model discloses an airflow generator of a dust collector and the dust collector, which solve the problems of high noise and low cleaning efficiency of the airflow generator in the prior art. The airflow generator includes: a blower housing; a blower housing located within the blower housing; the fan is arranged in the fan shell; a fan air inlet channel is formed between the fan shell and the fan shell, a fan air outlet channel is formed between the fan shell and the fan, the fan air inlet channel and the fan air outlet channel are mutually communicated, and the air inlet end of the fan air inlet channel is communicated with the air outlet end of a gas treatment device positioned at the upstream of the gas flow generator in the dust collector.

Description

Airflow generator of dust collector and dust collector

Technical Field

The utility model belongs to the technical field of cleaning equipment, and particularly relates to an airflow generator of a dust collector and the dust collector.

Background

In the dust collector in the prior art, the air flow generator where the fan is located has a simple structure, the flow path of air in the whole dust collector is short, the air exhaust speed of the dust collector is high, the noise of the whole dust collector is high, and the flow path is short, so that sufficient dust-air separation space is difficult to provide, and the cleaning efficiency is low.

Disclosure of Invention

The utility model aims to provide a dust collector and an airflow generator thereof, which solve the problems of high noise and low cleaning efficiency of the airflow generator in the prior art.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

An airflow generator for a vacuum cleaner, comprising:

A blower housing;

a blower housing located within the blower housing;

the fan is arranged in the fan shell;

A fan air inlet channel is formed between the fan shell and the fan shell, a fan air outlet channel is formed between the fan shell and the fan, the fan air inlet channel and the fan air outlet channel are mutually communicated, and the air inlet end of the fan air inlet channel is communicated with the air outlet end of a gas treatment device positioned at the upstream of the gas flow generator in the dust collector.

In some embodiments of the present application, the air inlet end of the air inlet channel of the fan and the air outlet end of the air outlet channel of the fan are located at one end in the axial direction of the fan, and the air outlet end of the air inlet channel of the fan and the air inlet end of the air outlet channel of the fan are located at the other end in the axial direction of the fan.

In some embodiments of the present application, a fan air inlet is provided on the fan housing at a position close to the air outlet end of the fan air inlet channel, and the air outlet end of the fan air inlet channel is communicated with the air inlet end of the fan air outlet channel through the fan air inlet.

In some embodiments of the present application, the fan housing and the fan housing are both in an annular structure, the fan housing is sleeved on the periphery of the fan housing, and the fan air inlet channel surrounds the periphery of the fan.

In some embodiments of the application, the airflow generator further comprises:

The drainage air duct is arranged between the fan air inlet channel and the air outlet end of the upstream gas treatment device and is used for guiding the gas exhausted by the upstream gas treatment device to the fan air inlet channel.

In some embodiments of the application, the drainage duct is integrally formed with the blower housing.

In some embodiments of the application, the drainage duct is independent of the blower housing and is sealingly connected to the blower housing.

In some embodiments of the application, the blower housing comprises:

A fan housing sidewall;

The front end cover is connected with the side wall of the fan shell;

The rear end cover is connected with the side wall of the fan shell, a rear end cover opening is formed in the rear end cover, and the air outlet end of the fan air outlet channel is communicated with the rear end cover opening.

In some embodiments of the application, the airflow generator further comprises:

and the display module is arranged on the fan shell.

The application also provides a dust collector which comprises the airflow generator.

Compared with the prior art, the utility model has the advantages and positive effects that:

The application provides an airflow generator, which comprises a fan shell, a fan shell and a fan, wherein a fan air inlet channel is formed between the fan shell and the fan shell, a fan air outlet channel is formed between the fan shell and the fan, air treated by an upstream air treatment device of the airflow generator enters the fan air inlet channel, then the flowing direction is changed, the air flows along the axial direction of the fan and flows towards the fan air outlet channel, the flowing direction is changed again after entering the fan air outlet channel, and the air flows along the axial direction of the fan and in the direction opposite to the flowing direction of the fan air inlet channel and flows out of the airflow generator, so that the flowing path of the airflow in the airflow generator is increased; the flow path is increased, so that on one hand, sufficient space can be provided for separating impurities such as dust from the air flow, the cleanliness of the air finally discharged out of the dust collector is improved, and the cleaning efficiency of the dust collector where the air flow generator is positioned is improved; on the other hand, the air duct can be utilized to fully absorb the air flow noise generated by the fan, the air exhaust speed of the air exhaust cavity is reduced, and the noise of the whole dust collector is further reduced.

Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Figure 1 is one of the perspective views of one embodiment of the proposed vacuum cleaner;

FIG. 2 is a second perspective view of an embodiment of a vacuum cleaner according to the present utility model;

Figure 3 is a front view of the cleaner of the embodiment of figure 1;

figure 4 is a top view of the cleaner of the embodiment of figure 1;

Figure 5 is a cross-sectional view of the cleaner of the embodiment of figure 1;

FIG. 6 is an exploded view of the dirt cup assembly of the dirt cleaner of the embodiment of FIG. 1;

FIG. 7 is a partially exploded view of the dirt cup assembly of FIG. 6;

FIG. 8 is a partial shell assembly block diagram of the vacuum cleaner of the embodiment of FIG. 1;

FIG. 9 is a cross-sectional view of a portion of the housing of FIG. 8;

figure 10 is an exploded view of the airflow generator of the cleaner of the embodiment of figure 1;

FIG. 11 is an exploded view of the air outlet assembly of the vacuum cleaner of the embodiment of FIG. 1;

FIG. 12 is a cross-sectional view of the inner casing of FIG. 11;

FIG. 13 is a bottom view of the inner casing of FIG. 11;

FIG. 14 is a bottom view of an air-out inner housing of another embodiment of a vacuum cleaner in accordance with the present utility model;

figure 15 is a cross-sectional view of yet another embodiment of the proposed vacuum cleaner;

FIG. 16 is a schematic view of a portion of the dirt cup assembly of FIG. 15;

FIG. 17 is a schematic view of the first filter element of FIG. 15;

figure 18 is a cross-sectional view of yet another embodiment of the proposed vacuum cleaner;

fig. 19 is a schematic view of the structure of the first filter member of fig. 18.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Fig. 1 to 13 show an embodiment of the dust collector according to the present utility model. The vacuum cleaner of this embodiment will be described below with reference to fig. 1 to 13.

Referring to fig. 1 to 9, the cleaner of this embodiment comprises a suction nozzle assembly 1, a dirt cup assembly 2, an airflow generator 3, an exhaust assembly 4 and a handle assembly 5.

The dirt cup assembly 2 includes a dirt cup housing 20 and a dirt gas separation chamber disposed within the dirt cup housing 20, the dirt cup housing 20 having a first suction inlet 2021 formed therein that communicates with the separation chamber, the separation chamber being capable of dirt gas separation of gas entering the dirt cup assembly 2 from the first suction inlet 2021.

The suction nozzle assembly 1 is mounted on the dirt cup housing 20 with one end thereof remote from the dirt cup housing 20 forming a complete machine suction inlet 11 and the other end opposite the complete machine suction inlet 11 communicating with a first suction inlet 2021 on the dirt cup housing 20.

The exhaust assembly 4 is located above the dust cup assembly 2, and the exhaust assembly 4 comprises an exhaust shell 41 and an exhaust cavity arranged in the exhaust shell 41, wherein the exhaust cavity and a separation cavity of the dust cup assembly 2 are isolated from each other on an air channel.

The airflow generator 3 is located on one side of the exhaust assembly 4 and the airflow generator 3 is located above the side of the dirt cup assembly 2. The airflow generator 3 comprises a fan housing 31 and a fan cavity positioned in the fan housing 31, wherein the fan cavity comprises a fan air inlet channel and a fan air outlet channel which are communicated, and a fan 37 is arranged in the fan air outlet channel. The fan 37 is transversely arranged, the axial direction of the fan cavity is parallel to the axial direction of the fan 37, and an included angle larger than 0 DEG is formed between the axial direction of the fan cavity and the axial direction of the dust cup assembly 2 (namely the axial direction of the dust-gas separation cavity) and between the fan cavity and the axial direction of the exhaust assembly 4 (namely the axial direction of the exhaust cavity). The fan air inlet channel comprises a fan air inlet channel air inlet end and a fan air inlet channel air outlet end, and the fan air outlet channel comprises a fan air outlet channel air inlet end and a fan air outlet channel air outlet end. Wherein, fan air inlet passageway air inlet end and fan air outlet passageway air outlet end all are located the one end that fan 37 is close to exhaust subassembly 4, and fan air inlet passageway air outlet end and fan air outlet passageway air inlet end all are located the other end that fan 37 kept away from exhaust subassembly 4. And the air inlet end of the air inlet channel of the fan is communicated with the air outlet of the separation cavity of the dust cup assembly 2, and the air outlet end of the air outlet channel of the fan is communicated with the air inlet of the air exhaust cavity of the air exhaust assembly 4.

In other embodiments, the axial direction of the fan chamber is perpendicular to the axial direction of the dust cup assembly 2 (i.e. the axial direction of the dust-gas separation chamber) and the axial direction of the exhaust assembly 4 (i.e. the axial direction of the exhaust chamber), respectively, and forms an included angle of 90 °.

Referring to the flow direction of the air flow in fig. 5, when the handle assembly 5 is used to grip the cleaner, under the action of the negative pressure generated by the fan 37 in the air flow generator 3, the air containing impurities such as dust outside enters the separating cavity of the dust cup assembly 2 through the whole suction inlet 11 of the suction nozzle assembly 1 and the first suction inlet 2021 of the dust cup assembly 2 to separate dust from air, and the separated impurities such as dust remain in the dust cup shell 20. The separated clean gas flows upwards towards the direction of the fan cavity, enters the fan air inlet channel through the air inlet end of the fan air inlet channel, then changes the flowing direction, flows leftwards along the axial direction of the fan 37, and reaches the air outlet end of the fan air inlet channel and the air inlet end of the fan air outlet channel through the fan air inlet channel; then the air changes the flowing direction again, flows rightward along the axial direction of the fan 37, namely flows in the fan air outlet channel in the direction opposite to the air flow in the fan air inlet channel, flows to the air exhaust cavity of the air exhaust assembly 4 through the air outlet end of the fan air outlet channel, and finally is exhausted out of the dust collector from the air exhaust cavity.

The flow of the cleaning gas separated in the separation chamber through the fan chamber in the above-mentioned airflow generator 3 and the exhaust chamber of the exhaust assembly 4, in particular through the fan inlet channel and the fan outlet channel provided in the airflow generator 3 in the axial direction of the fan 37, increases the flow path of the airflow inside the cleaner. The flow path is increased, so that on one hand, sufficient space can be provided for separating impurities such as dust from the airflow, the cleanliness of the air finally discharged out of the dust collector is improved, and the cleaning efficiency of the dust collector is improved; on the other hand, the air duct can be utilized to fully absorb the air flow noise generated by the fan 37, so that the air exhaust speed of the air exhaust cavity is reduced, and the noise of the whole dust collector is further reduced.

In other embodiments, the cleaner does not have a handle assembly 5, and the cleaner is fitted for use in other cleaning devices.

Referring to the exploded view of the dirt cup assembly of FIG. 6 and the partially exploded view of the dirt cup assembly of FIG. 7, in some embodiments of the utility model, the dirt cup housing 20 of the dirt cup assembly 20 includes a bottom cover 201, a side wall 202, and a dirt cup top cover 204. The side wall 202 is of a barrel-like structure, the bottom cover 201 is detachably and hermetically assembled with the side wall 202, and the dust cup top cover 204 is detachably and hermetically assembled with the side wall 202. In some embodiments, the removable mounting structure employs a slot, hook-type structure; in other embodiments, the removable mounting structure employs a screw, stud structure; in other embodiments, the removable mounting structure employs a slot/hook and screw/stud simultaneous mating structure.

The dust cup housing 20 is formed inside with a first separation chamber 21 and a second separation chamber 23. The first separation chamber 21 is adjacent to the suction nozzle assembly 1 and communicates with the suction nozzle assembly 1, and the first separation chamber 21 is approximately cylindrical for performing a first dust-gas separation of the air flow entering the interior of the dust cup housing 20. The second separation chamber 23 communicates with the first separation chamber 21 for performing a second dust-gas separation on the gas flow after the first dust-gas separation discharged from the first separation chamber 21.

The first separating chamber 21 and the second separating chamber 23 are arranged in a left-right arrangement in the dust cup shell 20, and the air flow flows out of the first separating chamber 21 to be reversed and then flows to the second separating chamber 23, so that the change of the flowing direction of the air flow in the dust cup shell is increased. The change of the airflow flowing direction can reduce the airflow flowing speed and the airflow flowing noise, can also increase the dust-air separation effect, improve the cleanliness of the air finally discharged out of the dust collector and improve the cleaning efficiency of the dust collector.

In particular to this embodiment, the dirt cup assembly 2 further includes a top plate 203, the top plate 203 being disposed on an inner wall of the sidewall 202 proximate to the dirt cup top cover 204, the outer periphery of the top plate 203 being sealingly connected to the inner wall of the sidewall 202, and a top plate air cavity 2032 being formed between the top plate 203 and the dirt cup top cover 204. Bottom cover 201, top plate 203 and part of side wall 202 define first separation chamber 21; bottom cover 201, top plate 203, and another portion of side wall 202 define second separation chamber 22.

A first suction port 2021 is provided in a position near the top plate 203 on the side wall 202 forming the first separation chamber 21. A first discharge port 2031 is provided in the top plate 203 at a position opposite to the first separation chamber 21. In other embodiments, the first drain 2031 is opposite a middle position of the first separation chamber 21. The first suction inlet 2021 is tangential to the inner wall of the side wall 202, so that after the air flow sucked from the suction nozzle assembly 1 enters the first separation chamber 21 along the first suction inlet 2021, the air flow rotates downward along the inner wall of the first separation chamber 21 and generates centrifugal force, and the air flow is separated from dust and gas in the first separation chamber 21 by the centrifugal force. The separated dust and other impurities fall on the bottom cover 201 and remain in the first separation chamber 21, and the separated gas flows out of the first separation chamber 21 from the first discharge port 2031 and then enters the ceiling air chamber 2032.

When it is necessary to clean the impurities such as dust remaining in the first separation chamber 21, the bottom cover 201 is detached from the side wall 202, and the impurities such as dust are poured out.

In other embodiments, referring to fig. 5 and 6, a first filter member 22 is provided in the first separation chamber 21, the first filter member 22 covering the first discharge port 2031. The gas separated from the dust and gas in the first separation chamber 21 is further filtered and dedusted by the first filter 22, and the filtered impurities remain on the outer surface of the first filter and/or fall on the bottom cover 201, and the filtered clean gas is discharged from the first discharge port 2031. By arranging the first filter element 22 to filter the air, the cleaning effect on the air is improved, the damage of dust-containing air to the fan 37 and other parts in the subsequent airflow generator can be avoided, and the service life of the whole dust collector is prolonged.

In some embodiments, as shown in fig. 5 and 6, the first filter 22 includes a first filter base 221, a cylindrical filter part 223 disposed on the first filter base 221, and a planar filter part 222 disposed on the first filter base and surrounding an outer circumference of the cylindrical filter part 223. The outer diameter of the cylindrical filter part 223 is smaller than that of the first filter base 221, the cylindrical filter part 223 extends upward from the first filter base 221, the upper end of the cylindrical filter part 223 away from the first filter base 221 is butted with the first discharge port 2031, and the bottom of the first filter base 221 is open. An air flow 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, and an air flow space is also formed between the cylindrical filter portion 223 and the inner wall of the first separation chamber 21. The gas from which the dust and gas are separated in the first separation chamber 21 passes through the flat filter portion 222 and the cylindrical filter portion 223, enters the cylindrical filter portion 223, and then continues to flow upward to the first discharge port 2031 and is discharged.

In some embodiments, the planar filter 222 is a filter screen disposed on the first filter base 221; in other embodiments, the planar filter 222 is a plurality of wind holes formed in the first filter base 221. In some embodiments, the cylindrical filter part 223 is a filter plate having a plurality of wind holes provided on the first filter base 221; in other embodiments, the cylindrical filter portion 223 includes a filter frame disposed on the first filter base 221 and a cylindrical filter mesh disposed on the filter frame.

In other embodiments, referring to fig. 15, which is a cross-sectional view of still another embodiment of the dust collector according to the present utility model, a schematic view of a part of the structure of the dust cup assembly in the embodiment shown in fig. 16, and a schematic view of the structure of the first filter element shown in fig. 17, the first filter element 22 includes a first filter base 224 and a cylindrical filter part 225 disposed on the first filter base 224. The outer diameter of the cylindrical filter part 225 is smaller than the outer diameter of the first filter base 224, the cylindrical filter part 225 extends upward from the first filter base 224, and the upper end of the cylindrical filter part 225 remote from the first filter base 224 is butted with the first discharge port 2031. The first filter base 224 is formed with a plurality of notches 2241, and the first filter base 224 is further provided with a flat filter 2242 surrounding the outer periphery of the cylindrical filter 225. In some embodiments, two indentations 2241 are symmetrically formed in the first filter base 224, as shown in fig. 17. In other embodiments, three indentations 2241 or four indentations 2241 may also be formed in the first filter base 224. In some embodiments, the plurality of indentations are evenly disposed on the first filter base 224 to improve the uniformity of the 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 perimeter 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 air flow space is formed between the bottom surface of the first filter base 221 and the inner surface of the bottom cover 201, and an air flow space is also formed between the cylindrical filter part 225 and the inner wall of the first separation chamber 21. After the air flow sucked from the suction nozzle assembly 1 enters the first separating chamber 21 along the first suction inlet 2021, it rotates downward along the inner wall of the first separating chamber 21 while generating centrifugal force, and the air flow rotates downward along the gap 2241 on the first filter base 224 to the bottom of the first separating chamber 21, and impurities such as dust remain on the bottom cover 201. And the cleaning gas after the dust-gas separation passes through the plane filtering part 2242, then passes through the cylindrical filtering part 225 again and continues to flow upward, and finally is discharged from the first discharge port 2031. By using the first filter 22, the gas after dust-gas separation can be further filtered, and impurities such as dust and the like are remained in the first separation cavity 21 as much as possible, so that the cleaning effect on air is improved, and damage to components such as a fan 37 in a subsequent airflow generator is avoided. In addition, since the portions of the outer periphery of the first filter base 224 except the gap 2241 are close to and/or abut 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, so that the dust is prevented from drifting in the entire first separation chamber 21, and even is carried out of the first separation chamber 21 by the air flow. Therefore, the problems that dust drifts and/or is carried out to influence the dust-gas separation effect of the first separation cavity 21 and reduce the cleaning efficiency are effectively avoided, the frequency of cleaning dust in the dust cup assembly 2 because the dust drifts in the first separation cavity 21 is effectively reduced, and the cleaning efficiency is further improved.

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

In other embodiments, referring to fig. 18, which is a cross-sectional view of still another embodiment of the cleaner according to the present utility model and is a schematic structural view of the first filter shown in fig. 19, the first filter 22 includes a filter cylinder 226 having an open structure at the bottom and top, an air flow space is formed between a lower end opening and the bottom cover 201, an upper end opening is in butt joint with the first discharge port 2031, and an air flow space is formed between the filter cylinder 226 and an inner wall of the first separation chamber 21. A first layer of filtering parts 227 and a second layer of filtering parts 228 are arranged in the inner cavity of the filtering cylinder 226, and the first layer of filtering parts 227 are positioned at the lower layer and are closer to the bottom opening of the filtering cylinder 226; a second filter screen 228 is positioned on the upper layer, closer to the top opening of the filter cartridge 226. After the air flow sucked from the suction nozzle assembly 1 enters the first separation chamber 21 along the first suction inlet 2021, the air flow rotates downward along the inner wall of the first separation chamber 21 while generating centrifugal force, and the air flow is separated from dust and gas in the first separation chamber 21 by the centrifugal force. The separated dust and other impurities fall on the bottom cover 201 to remain in the first separation chamber 21. The clean gas after dust-gas separation flows upward, is filtered by the first layer filtering part 227, and the filtered impurities such as dust fall down into the space between the bottom cover 201 and the first layer filtering part 227, and the filtered clean gas continues to flow upward, is filtered by the second layer filtering part 228 again, and the filtered clean gas continues to flow upward and is finally discharged from the first discharge port 2031.

By means of the first filter 22 with two layers of filter parts, the gas after dust-gas separation can be further filtered twice, impurities such as dust and the like are remained in the first separation cavity 21 as much as possible, the cleaning effect on air is improved, and damage to components such as a fan 37 in a subsequent airflow generator is avoided. By the first layer filtering part 227 provided at the lower portion, the separated dust and other impurities can be compressed and confined between the bottom cover 201 and the first layer filtering part 227 as much as possible, so that dust is prevented from drifting in the entire first separation chamber 21, and even is carried out of the first separation chamber 21 by the air flow. Therefore, the problems that dust drifts and/or is carried out to influence the dust-gas separation effect of the first separation cavity 21 and reduce the cleaning efficiency are effectively avoided, the frequency of cleaning dust in the dust cup assembly 2 because the dust drifts in the first separation cavity 21 is effectively reduced, and the cleaning efficiency is further improved.

In some embodiments, as shown in fig. 18, the first layer of filtering parts 227 has an overall inverted V-shaped structure, the inverted V-shaped opening is open toward the bottom of the filtering cylinder 226, and the outer periphery of the inverted V-shaped structure abuts against the inner wall of the filtering cylinder 226. The second layer of filtering portion 228 has a V-shaped overall structure, the V-shaped opening faces the top opening of the filtering cylinder 226, and the outer periphery of the V-shaped structure abuts against the inner wall of the filtering cylinder 226. By arranging the first layer filtering portion 227 and the second layer filtering portion 228 in a V-shaped structure, the filtering area can be increased, and the airflow filtering efficiency can be improved.

In some embodiments, the top end of the second layer filtering portion 228 is spaced apart from the first discharge port 2031 by a distance L1 in the vertical direction. By providing the top end of the second layer filter 228 with a certain distance from the first discharge port 2031 in the vertical direction, a large airflow space can be formed between the second layer filter 228 and the first discharge port 2031, the outflow speed of the airflow from the first discharge port 2031 is slowed down, the airflow noise can be reduced, and the dust can be prevented from being carried out of the first separation chamber 21 due to the excessively fast flow speed, thereby further improving the filtering and cleaning effects.

In some embodiments, the degree of the V-shaped apex angle a of the first layer filtering portion 227 is in the range of 90-135 ° in order to balance the smoothness of the airflow and the dust filtering effect. Correspondingly, the degree of the V-shaped apex angle B of the second filter portion 228 is also in the range of 90-135 °.

In some embodiments, as shown in fig. 18, the filter body portions of the first layer filter portion 227 and the second layer filter portion 228 are planar. That is, in the sectional view of fig. 18, the contour lines of both diagonal sides of the two-layer filter portion of the V-shaped structure are straight lines.

In other embodiments, the filter body portions of the first layer of filter portions 227 and the second layer of filter portions 228 are spherical in shape. That is, as shown in the cross-sectional view of fig. 18, the contours of the two inclined sides of the two-layer filter portion of the V-shaped structure are curved. The filtering part with the spherical surface is adopted, the filtering area is larger, and impurities such as dust on the filtering part can be conveniently cleaned.

In some embodiments, the first layer of filter 227 is a filter plate having a plurality of wind holes and the second layer of filter 228 is a filter plate having a plurality of wind holes; in other embodiments, the first layer of filtering portion 227 includes a filtering frame and a filter screen disposed on the filtering frame, and the second layer of filtering portion 228 includes a filtering frame and a filter screen disposed on the filtering frame.

With continued reference to fig. 5, 6 and 7, the second separation chamber 23 is located on the side of the first separation chamber 21 and is the side remote from the suction nozzle assembly 1. In the sectional view of fig. 5, the suction nozzle assembly 1 is located on the right side of the first separation chamber 21, and the second separation chamber 23 is located on the left side of the first separation chamber 21.

To ensure smooth and consistent flow of air into the second separation chamber 23 and dust-air separation, the dirt cup assembly 2, in some embodiments, also includes a second suction 241. The second suction part 241 includes a second suction port 2411 and a second baffle 2412. The second suction inlet 2411 is formed on the top plate 203, and the second deflector 2412 extends upward to the bottom surface of the dust cup top cover 204 along a part of the opening edge of the second suction inlet 2411 and abuts against the bottom surface of the dust cup top cover 204. The second deflector 2412 includes a first deflector portion 24121 matching a partial opening edge of the second suction port 2411 and a second deflector portion 24122 extending toward the first discharge port 2031, an air flow inlet 24123 is formed between a free end of the first deflector portion 24121 and a free end of the second deflector portion 24122, and the air flow inlet 24123 faces the first discharge port 2031.

In some embodiments, dirt cup assembly 2 also includes a second separation section 242 located within second separation chamber 23 and an airflow delivery tube 244 located partially within second separation section 242. The second separation portion 242 extends from the second suction port 2411 into the second separation chamber 23 to form a cylindrical body, and a dust discharge port 243 is formed in the bottom of the cylindrical body. The dust discharge port 243 is spaced apart from the bottom of the second separation chamber 23 by a distance L2 in the vertical direction. The airflow delivery tube 244 extends partially into the second separator 242 and partially up to the dirt cup lid 204 and interfaces with a second outlet 2041 provided on the dirt cup lid 204. The bottom end of the portion of the air flow guiding pipe 244 extending into the second separating portion 242 is spaced apart from the dust discharge port 243 by a distance L3 in the vertical direction.

The airflow discharged from the first discharge port 2031 enters the ceiling air chamber 2032 and then continues to flow, and flows into the airflow inlet 24123. Under the flow of the second flow guide plate 2412, the dust and gas enters the second separation part 242 in a tangential direction of the inner wall of the second separation part 242, and rotates downward along the inner wall of the second separation part 242 to generate centrifugal force, thereby performing the second dust and gas separation. Impurities such as dust and the like after the secondary dust-gas separation fall into the accommodating space of the second separation chamber 23 below the second separation portion 242 from the dust discharge port 243, and the separated clean gas flows upward to the gas flow guide pipe 244, flows upward along the gas flow guide pipe 244, and finally is discharged from the second discharge port 2041.

When it is necessary to clean the impurities such as dust remaining in the second separation chamber 23, the bottom cover 201 is detached from the side wall 202, and the impurities such as dust are poured out.

By arranging the second separation part 242 in the second separation chamber 23, arranging the air flow guiding pipe 244 in the second separation part 242, arranging the dust discharge port 243 with a certain interval distance from the bottom of the second separation chamber 23 to form a certain accommodating space between the second separation part 242 and the second separation chamber 23, arranging the bottom end of the air flow guiding pipe 244 with a certain interval distance from the dust discharge port 243 in the vertical direction, performing secondary dust-air separation by using the second separation part 242, guiding out separated clean air through the air flow guiding pipe 244, and reserving separated dust and other impurities in the accommodating space below the second separation part 242, the air flow in the area where the dust and other impurities are reserved in the second separation chamber 23 can be reduced, the rotation of the dust and other impurities is reduced, the dust and other impurities are prevented from being carried out by the discharged air flow, and the dust-air separation effect is improved.

In some embodiments, the inner diameter of the barrel of the second separator 242 tapers from top to bottom forming an inverted frustoconical shape. By arranging the second separation part 242 with the inner cylinder diameter gradually reduced from top to bottom, the airflow entering the second separation part 242 will accelerate spiral sinking in the second separation part 242, and the dust-gas separation speed and separation efficiency are improved.

In some embodiments, the number of second separation chambers 23 may be one or more. In the embodiment shown in fig. 6, the number of second separation chambers 23 is four. When a plurality of second separation chambers 23 are provided, each separation chamber is independent of the other, and each separation chamber 23 is provided with a second suction portion 241, a second separation portion 242, and an air flow delivery pipe 244.

In some embodiments, referring to fig. 5 and 6, a boss 2042 protruding upward is formed on the dust cup top cover 204 at a position corresponding to the first discharge port 2031. By forming the boss 2042 on the dust cup top cover 204, an inner wall of the boss 2042 (in fig. 5, the inner wall refers to a lower surface of the boss 2042) is away from the first discharge port 2031, so that a larger airflow space is formed between the first discharge port 2031 and the boss 2042, facilitating smooth discharge of airflow from the first discharge port 2031 into the ceiling air cavity 2032.

Referring to the partial housing assembly structure of fig. 8, the sectional view of the partial housing of fig. 9, and the exploded view of the airflow generator of fig. 10, the structure of the airflow generator 3 will be specifically described with reference to fig. 1 to 7.

The airflow generator 3 includes a blower housing 31, a drainage duct 32, a blower housing 33, and a blower 37. The fan housing 33 is located in the fan housing 31, and a fan air inlet channel 34 is formed between the fan housing 31 and the fan housing 33; the fan 37 is disposed in the fan housing 33, and a fan air outlet passage 36 is formed between the fan housing 33 and the fan 37. The fan air inlet channel 34 and the fan air outlet channel 36 are communicated with each other, the fan air inlet channel 34 is also communicated with the second separation cavity 23 of the dust cup assembly 2, and the fan air outlet channel 36 is also communicated with the air exhaust cavity of the air exhaust assembly 4. The fan housing 31 has an annular structure, the fan housing 33 has an annular structure, and the fan housing 31 is sleeved on the periphery of the fan 33, so that the fan air inlet channel 34 surrounds the periphery of the fan 37. Through encircling the fan air inlet passageway in the fan periphery, can increase the air current flow homogeneity, and be convenient for realize air current generator overall structure's compactness, miniaturized design.

In some embodiments, as shown in fig. 10, a fan air inlet 331 is provided at the left end of the fan housing 33, and the air outlet end of the fan air inlet channel 34 communicates with the air inlet end of the fan air outlet channel 36 through the fan air inlet 331.

The air inlet end of the fan air inlet channel 34 is arranged at one end close to the dust cup assembly 2 and the air exhaust assembly 4, specifically, in the structure shown in fig. 5, the air inlet end of the fan air inlet channel 34 is positioned at the right end of the fan housing 31. Moreover, the air inlet end of the fan air inlet channel 34 is adjacent to the second outlet 2041 of the dirt cup assembly 2. The air outlet end of the fan air inlet channel 34 is arranged at one end far away from the dust cup assembly 2 and the air exhaust assembly 4, specifically, in the structure shown in fig. 5, the air outlet end of the fan air inlet channel 34 is positioned at the left end of the fan housing 31. The air inlet end of the fan air outlet channel 36 is close to the air outlet end of the fan air inlet channel 34, and the air outlet end of the fan air outlet channel 36 is close to the air exhaust assembly 4. Specifically, in the structure shown in fig. 5, the air inlet end of the air outlet channel 36 of the fan is located at the left end, and the air outlet end of the air outlet channel 36 of the fan is located at the right end.

The air guiding duct 32 is arranged between the fan air inlet channel 34 and the second outlet 2041 of the dirt cup assembly 2 for guiding the air flow discharged from the second outlet 2041 towards the fan air inlet channel 34. The drainage duct extends from the outer periphery of the second outlet 2041 toward the fan air intake passage 34.

In some embodiments, the air flow discharged from the second outlet 2041 is introduced into the fan air inlet channel 34 along a tangential direction of the inner wall of the fan housing 31 by the air flow guiding duct 32, so that the air flow generates centrifugal force in the fan air inlet channel 34, and the dust-air separation effect is improved.

In some embodiments, the drain chute 32 is separate from the blower housing 31 and is sealingly connected to the blower housing 31. In some embodiments, as shown in fig. 9, the drainage duct 32 is integrally formed with the blower housing 31.

In some embodiments, a second filter 35 is disposed in the fan air inlet 34, and is used for filtering and dedusting the air flow entering the fan air inlet 34, and impurities such as filtered dust remain on the second filter 35, and the filtered clean air enters the fan air outlet 36. The second filter element 35 is arranged in the fan air inlet channel 34 to further filter the gas separated from the dust and gas by the dust cup assembly, so that the cleaning effect on the air is improved, the damage to the fan 37 caused by the dust-containing gas entering into the fan air outlet channel 36 can be avoided, and the service life of the whole dust collector is prolonged.

In some embodiments, referring to fig. 10, the second filter 35 includes a filter body frame 352, and a filter body is disposed on the filter body frame 352. In some embodiments, the filter body is a flexible filter screen; in other embodiments, the filter body is a porous filter material. The filter main body frame 352 is also of an annular structure and surrounds the periphery of the fan shell 33, and therefore, the filter body arranged on the filter main body frame 352 also surrounds the periphery of the fan shell 33, and accordingly, the filter body is utilized to fully filter the air flow entering the fan air inlet, and the filtering effect is improved.

In some embodiments, referring to fig. 8, 9 and 10, the blower housing 31 includes a blower housing sidewall 311, a front end cap 312 and a rear end cap 313, the blower housing sidewall 311 is in a ring-shaped structure, the front end cap 312 is located at an end of the blower housing sidewall 311 away from the exhaust assembly 4, and the rear end cap 313 is located at an end of the blower housing sidewall 311 near the exhaust assembly 4. The front end cap 312 is connected to the blower housing sidewall 311, and an annular opening 314 is formed between the front end cap 312 and an end of the blower housing sidewall 311. The rear cover 313 is connected to the fan housing side wall 311, and a rear cover opening 3131 is formed in the rear cover 313. The rear end cap opening 3131 serves as a final air flow outlet of the air flow generator, is disposed corresponding to a fan air outlet on the fan housing 33, and communicates with the fan air outlet passage 36. The second filter element 35 further includes an outboard end 351, the outboard end 351 being located at an end of the filter body frame 352, and in particular at an end of the filter body frame 352 proximate the front end cap 312. The external end 351 is connected to the filter body frame 352, and in the assembled structure of the complete machine, the filter body frame 352 and the filter body thereon are placed in the blower inlet duct 34 between the blower housing 31 and the blower housing 33, the external end 351 is in sealing connection with the annular opening 314, and the external end 351 is at least partially exposed. By operating the outboard end 351, the filter body frame 352 and the filter thereon can be pulled out of the blower inlet channel 34, as well as the filter body frame 352 and the filter thereon can be inserted into the blower inlet channel 34. After the filter body frame 352 and the filter body thereon are pulled out from the fan inlet air passage 34, impurities such as dust on the filter body can be cleaned, or the filter body can be replaced.

In some embodiments, the filter main body frame 352 and the filter body thereon are pulled out with the fan housing 31 through a sliding structure, so as to improve the disassembly and assembly efficiency and the disassembly and assembly convenience. In some embodiments, the sliding structure is a sliding rail and sliding groove matched structure. In some embodiments, the sliding structure is a guide wheel and guide rail matched structure.

In other embodiments, the second filter 35 is a filter material that fills the entire fan inlet air channel 34.

In other embodiments, a display module is disposed on the blower housing 31, and the display module is connected to the control module of the vacuum cleaner, and displays information or instructions such as the electric quantity, the working mode, the gear position of the blower, and the fault notification of the vacuum cleaner through the display module. In some embodiments, the display module is disposed on the front end cap 312 of the blower housing 31.

In some embodiments, the blower housing 31, the blower housing 33, and the blower 37 are assembled using the following structures:

The rear end of the blower 37 is fitted to a rear end cover 313 constituting the blower housing 31 through a blower holder 38, and the front end of the blower 37 is fitted to the blower housing 33. The rear end of the fan housing 33 is fitted with a rear end cap 313, and the front end thereof is fitted with a front end cap 312 constituting the fan housing 31 through a connection 39. Thereby, the lateral assembly of the blower 37 in the blower housing is realized with a simple structure, and the compactness and miniaturization of the entire structure of the airflow generator can be realized.

Referring to the exploded view of the air outlet assembly of fig. 11, the cross-sectional view of the air outlet inner casing of fig. 12, and the bottom view of the air outlet inner casing of fig. 13, the structure of the air discharge assembly 4 will be specifically described with reference to fig. 1 to 10.

The exhaust assembly 4 comprises an exhaust outer shell 41, an exhaust inner shell 42 and an exhaust top cover 47, wherein the exhaust inner shell 42 is positioned in a space surrounded by the exhaust outer shell 41 and the exhaust top cover 47, and the exhaust outer shell 41, the exhaust inner shell 42 and the exhaust top cover 47 jointly define an exhaust cavity of the exhaust assembly 4.

In some embodiments, the exhaust housing 41 acts as an exhaust housing for the exhaust assembly 4; in some embodiments, the exhaust outer shell 41 and the exhaust inner shell 42 together function as an exhaust shell of the exhaust assembly 4.

The exhaust casing 41 is of an annular structure, the bottom end of the exhaust casing 41 is in sealing connection with the dust cup shell 20 in the dust cup assembly 2, the top end of the exhaust casing is in sealing connection with the exhaust top cover 47, and one end of the exhaust casing, which is close to the airflow generator 3, is connected with the fan casing 31. The exhaust casing 41 is provided with an exhaust casing opening at a side close to the blower casing 31.

The exhaust inner shell 42 is of an annular structure and is positioned above the dust cup top cover 204 in the dust cup assembly 2, and the bottom end of the exhaust inner shell is connected with the dust cup top cover 204. The exhaust inner shell 42 is provided with an exhaust suction inlet 421 at one end close to the airflow generator 3, and the exhaust suction inlet 421 is used as an air inlet of an exhaust cavity of the exhaust assembly 4 and is communicated with an air outlet end of a fan air outlet channel 36 of the airflow generator 3 through an opening of the exhaust outer shell. In some embodiments, the exhaust suction port 421 communicates with the rear end cap opening 3131.

An air exhaust partition plate 43 is arranged in the air exhaust inner shell 42, and a rotary air duct air outlet 431 is formed in the air exhaust partition plate 43, so that the air exhaust partition plate 43 divides the inner cavity of the air exhaust inner shell 42 into an upper cavity and a lower cavity which are communicated. A rotary air outlet device 44 is provided in the lower chamber of the lower portion of the air discharge partition plate 43, and a third filter 45 is provided in the upper chamber of the upper portion of the air discharge partition plate 43.

In some embodiments, the height of the lower cavity of the exhaust divider plate 43 is greater than the height of the upper cavity thereof to provide a longer rotating exhaust duct with the lower cavity. In some embodiments, the rotary air duct air outlet 431 is formed at a middle position of the air exhaust partition plate 43, so as to realize uniform flow of air flow in the air exhaust cavity.

The rotary air outlet device 44 includes a rotary air duct housing 441, the rotary air duct housing 441 defines a rotary air duct 442, an air inlet end of the rotary air duct 442 communicates with the exhaust air suction inlet 421, and an air outlet end of the rotary air duct 442 communicates with the rotary air duct air outlet 431.

The third filter 45 is a ring body surrounding the outer periphery of the rotary air duct outlet 431, and the third filter 45 extends upward from the upper surface of the exhaust partition plate 43 to be close to the exhaust top cover 47. A certain space is reserved between the peripheral outer edge of the third filter element 45 and the inner wall of the air exhaust inner shell 42, and an air exhaust duct 46 is defined by the upper surface of the air exhaust partition plate 43, the third filter element 45, the inner wall of the air exhaust inner shell 42 and the air exhaust top cover 47. The air inlet end of the air exhaust duct 46 is communicated with the rotary duct 442 through the rotary duct air outlet 431, and the air outlet end of the air exhaust duct 46 is communicated with the top cover air outlet 473 on the air exhaust top cover 47.

The air flow discharged from the air flow generator 3 enters the rotary air duct 442 through the air exhaust suction inlet 421, flows out of the rotary air outlet device 44 from the rotary air duct air outlet 431, and then flows to the third filter 45; the cleaning gas further filtered by the third filter 45 enters the exhaust duct 46, continues to flow upward, and finally is exhausted from the top cover air outlet 473. By arranging the rotary air duct 442 and the air exhaust air duct 46, the length of the air outlet air duct at the rear end of the fan 37 is increased, so that the length of the whole air outlet air duct inside the dust collector is further prolonged, the air exhaust speed is further reduced, and the air outlet noise is reduced. By arranging the third filter element 45, the air is filtered again, the cleanliness of the discharged air is improved, and the dust collection effect of the dust collector is further improved.

In some embodiments, referring to fig. 12 and 13, the rotary air duct housing 441 includes an inner ring air duct housing 4411, the inner ring air duct housing 4411 is a non-closed annular structure having an inner ring air duct inlet 4412, and the inner ring air duct housing 4411 is located at the middle position of the lower cavity and forms an annular air duct with the housing of the air exhaust inner housing 42 forming the lower cavity. The bottom end of the inner ring air duct housing 4411 and the inner ring air duct air inlet 4412 are far away from the air exhaust suction inlet 421 on the air exhaust inner housing 42. In some embodiments, the inner ring air duct air inlet 4412 faces away from the exhaust air suction inlet 421, so that the annular air duct from the exhaust air suction inlet 421 to the inner ring air duct air inlet 4412 is divided into two paths, namely a first split air duct 4421 and a second split air duct 4422.

Referring to the wind direction shown by the arrow direction in fig. 13, the airflow flowing in from the exhaust air suction port 421 is split into two, one is divided into two paths, one is directed to the inner ring air duct air inlet 4412 along the first split air duct 4421, the other is directed to the inner ring air duct air inlet 4412 along the second split air duct 4422, and the two paths of airflows flow out from the rotating air duct air outlet 431 after converging in the cavity of the inner ring air duct housing 4411. The inner ring air duct air inlet 4412 is far away from the air exhaust suction inlet 421 on the air exhaust inner shell 42, so that the annular air duct from the air exhaust suction inlet 421 to the inner ring air duct air inlet 4412 is divided into two paths, the double-path air exhaust to the inner ring air duct shell 4411 is realized, the air exhaust air quantity is increased, and the air outlet air quantity of the whole machine is improved.

In some embodiments, as shown in fig. 13, a first air guide shell 4413 is disposed in the first split air duct 4421 near the inner ring air duct air inlet 4412, and a second air guide shell 4414 is disposed in the second split air duct 4422 near the inner ring air duct air inlet 4412. One end of the first air guiding shell 4413 is connected with the air exhaust inner shell 42, the other end is close to the inner ring air duct air inlet 4412; one end of the second air guiding shell 4414 is connected with the air exhaust inner shell 42, the other end is close to the inner ring air duct air inlet 4412. By providing the first and second air guide cases 4413 and 4414, the air flow in the split flow passage can be smoothly guided into the cavity of the inner ring air duct case 4411.

In some embodiments, the first and second fluid directing shells 4413, 4414 are each arcuate shells.

In some embodiments, referring to a bottom view of yet another embodiment of the air outlet inner housing shown in fig. 14, the rotating air duct housing 441 includes a spiral air duct housing 4415. The outer end of the spiral duct housing 4415 is hermetically connected to the inner wall of the exhaust inner case 42 near the exhaust suction port 421, and the inner end of the spiral duct housing 4415 forms a spiral duct air inlet 4416. The bottom end of the spiral duct housing 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 abuts against the rotary duct air outlet 431. A spiral rotary duct 442 is formed between the spiral duct case 4415 and the case of the exhaust inner case 42 forming the lower chamber and between the spiral duct case 4415 itself. Referring to the wind direction shown by the arrow direction of fig. 14, the air flow flowing in from the exhaust suction port 421 flows in rotation in the rotary duct 442, enters the innermost cavity of the spiral duct case 4415 through the spiral duct air inlet 4416, and then flows out from the rotary duct air outlet 431. The spiral air duct shell 4415 is adopted to form a multi-circle circular rotating air duct, so that the length of an air outlet air duct at the rear end of the fan 37 is greatly increased, the air exhaust speed is reduced, and the air outlet noise is reduced.

In some embodiments, the third filter element 45 includes a bottom rim 451, a top end cap 452, and a cartridge 453 between the bottom rim 451 and the top end cap 452. The bottom frame 451 is assembled to the upper surface of the exhaust partition plate 43, and the top cover 452 is assembled to the exhaust top cover 47. The filter element 453 is of an annular structure, the bottom frame 451 is of an annular structure, and the top end cover 452 is of a disc-shaped structure. By providing the third filter element 45 with a configuration having a bottom rim 451 and a top end cap 452, a sealed assembly between the third filter element 45 and other structural components is facilitated.

In some embodiments, the cartridge 453 employs a hepa filter screen. In some embodiments, the bottom frame 451 is made of a soft plastic material, which facilitates sealing of the bottom frame 451 to the exhaust partition plate 43. The top end cover 452 is made of a hard glue-mixing material, which is beneficial to the assembly of the top end cover 452 with the exhaust top cover 47 and/or the exhaust outer shell 41 and/or the exhaust inner shell.

With continued reference to fig. 1-5 and 11, the exhaust hood 47 includes a hood flange 471, a hood panel 472, and a hood exhaust 473. The top cover flange 471 is folded downward, and a plurality of clamping grooves 4711 are arranged on the outer side wall of the top cover flange 471. The exhaust casing 41 is provided with a clamping protrusion which is matched with the clamping groove 4711 to realize clamping, and the exhaust top cover 47 is detachably assembled with the exhaust casing 41 through the clamping groove 4711. The top cap quotation 472 is located the intermediate position of exhaust top cap 47, and top cap air outlet 473 encircles in top cap quotation 472 periphery, communicates with exhaust wind channel 46. The top cover disc 472 is provided with an operation portion 4721, and the operation portion 4721 rotates the exhaust top cover 47 to attach the exhaust top cover 47 to the exhaust casing 41 or detach the exhaust top cover 47 from the exhaust casing 41.

In some embodiments, the exhaust cap 47 is not connected to the third filter element 45, and after the exhaust cap 47 is detached from the exhaust housing 41 by the operation part 4721, the third filter element 45 is detached from the exhaust inner housing 42 and removed to clean dust and other impurities on the third filter element 45, and the third filter element 45 is cleaned or replaced.

In some embodiments, when the exhaust cap 47 is connected to the third filter element 45 and the exhaust cap 47 is detached from the exhaust housing 41 by the operation part 4721, the exhaust cap 47 is detached together with the third filter element 45, so that impurities such as dust on the third filter element 45 can be cleaned, and the third filter element 45 can be cleaned or replaced.

In some embodiments, as shown in fig. 11, the operator 4721 is at least two grooves or tabs formed on the top cover disk surface 472 to facilitate rotation of the exhaust top cover 47.

With continued reference to fig. 1-3, 5 and 8, the handle assembly 5 includes a handle housing including a grip portion 51 and a connecting portion 52, with a grip space 53 formed between the grip portion 51 and the connecting portion 52. The holding space 53 can accommodate the hand and provide a space for flexible movement of the hand, facilitating firm gripping of the grip portion 51 with the entire hand. The connection portion 52 includes a horizontal connection portion 521 disposed laterally and a vertical connection portion 522 disposed vertically. The bottom of the vertical connecting part 522 is connected with one end of the horizontal connecting part 521, which is close to the dust cup assembly 2, and the vertical connecting part 522 and the horizontal connecting part 521 form an L-shaped structure. The top of the vertical connecting part 522 is connected with one end of the fan housing 31 of the airflow generator 3, which is close to the exhaust assembly 4, and the whole vertical connecting part 522 is also connected with the dust cup shell 20 of the dust cup assembly 2. The bottom end of the holding part 51 is connected with the horizontal connecting part 521 at a position far from the vertical connecting part 522, and the top end of the holding part 51 is connected with one end of the blower housing 31 far from the exhaust assembly 4. Thus, the weight of the blower 37 transversely disposed within the airflow generator 3 is dispersed and supported by the grip portion 51 and the connecting portion 52, and the cleaner can be lifted up by the handle assembly 5 more easily and with less effort.

In some embodiments, the holding part 51 is inclined, and the bottom end of the holding part moves away from the dust cup assembly 2, so that the bottom end of the holding part 51 is further away from the gravity center of the dust collector in the horizontal direction, and the dust collector is easier to lift easily and stably for cleaning operation.

With continued reference to figures 1 to3 and 5, a power supply assembly 6 for powering the cleaner is located in the lower portion of the handle assembly 5. By placing the power supply assembly 6 below the handle assembly 5, it is possible to balance the weight with the airflow generator 3 placed above the handle assembly 5, thereby facilitating easy and labor-saving lifting of the cleaner through the handle assembly 5 when the cleaner is in use; the vacuum cleaner can be stably placed when not in use.

In some embodiments, the power supply assembly 6 includes a power supply housing 61 and a power supply 62 located inside the power supply housing 61, the power supply housing 61 being removably assembled with the handle assembly 5. By adopting the detachable assembly structure of the power supply assembly 6 and the handle assembly 5, the power supply assembly 6 is convenient to detach so as to conveniently process the power supply 62 in the power supply assembly 6.

In other embodiments, the cleaner may not include the power supply assembly 6, and the external power source may be used to power the cleaner.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. An airflow generator for a vacuum cleaner, the airflow generator comprising:

A blower housing;

a blower housing located within the blower housing;

the fan is arranged in the fan shell;

A fan air inlet channel is formed between the fan shell and the fan shell, a fan air outlet channel is formed between the fan shell and the fan, the fan air inlet channel and the fan air outlet channel are mutually communicated, and the air inlet end of the fan air inlet channel is communicated with the air outlet end of a gas treatment device positioned at the upstream of the gas flow generator in the dust collector.

2. The airflow generator of claim 1, wherein an air inlet end of the fan air inlet channel and an air outlet end of the fan air outlet channel are positioned at one end of the fan in the axial direction, and an air outlet end of the fan air inlet channel and an air inlet end of the fan air outlet channel are positioned at the other end of the fan in the axial direction.

3. The airflow generator of claim 1, wherein a fan air inlet is provided in the fan housing at a position near an air outlet end of the fan air inlet channel, and the air outlet end of the fan air inlet channel is communicated with an air inlet end of the fan air outlet channel through the fan air inlet.

4. The airflow generator of claim 1, wherein the fan housing and the fan housing are of annular structure, the fan housing is sleeved on the periphery of the fan housing, and the fan air inlet channel surrounds the periphery of the fan.

5. The airflow generator of the vacuum cleaner of claim 1, further comprising:

The drainage air duct is arranged between the fan air inlet channel and the air outlet end of the upstream gas treatment device and is used for guiding the gas exhausted by the upstream gas treatment device to the fan air inlet channel.

6. The airflow generator of claim 5, wherein the drainage duct is integrally formed with the blower housing.

7. The airflow generator of claim 5, wherein the drainage duct is independent of the blower housing and is sealingly connected thereto.

8. The airflow generator of a vacuum cleaner of any one of claims 1 to 7, wherein the blower housing comprises:

A fan housing sidewall;

The front end cover is connected with the side wall of the fan shell;

The rear end cover is connected with the side wall of the fan shell, a rear end cover opening is formed in the rear end cover, and the air outlet end of the fan air outlet channel is communicated with the rear end cover opening.

9. The airflow generator of a vacuum cleaner of any one of claims 1 to 7, further comprising:

and the display module is arranged on the fan shell.

10. A vacuum cleaner comprising an airflow generator as claimed in any one of claims 1 to 9.