CN223177804U - Cleaning equipment, impellers and fan structures - Google Patents

Abstract

The present application discloses a cleaning device, an impeller, and a fan structure. The cleaning device has a fan structure, which includes at least a cover and a impeller mounted on the cover, wherein the impeller includes a first disk and a plurality of first blades, the plurality of first blades being arranged on the first disk along the circumference of the first disk, and a first air duct being formed between two adjacent first blades; along the direction of airflow in the first air duct, the air outlet end of the first blade is provided with a notch, and the shape and/or size of the notch of at least two adjacent first blades are different. The technical solution provided by the present application can reduce noise while ensuring fan performance.

Description

Cleaning equipment, movable impeller and fan structure

Technical Field

The application relates to the field of fans, in particular to cleaning equipment, a movable impeller and a fan structure.

Background

The fan realizes the function of air suction and air supply through the rotation of the impeller in the fan, and when the impeller operates, the impeller can generate frequency multiplication energy corresponding to the number of blades due to the regular discharge of air flow through the impeller, namely the impeller She Beipin. This frequency doubling causes the impeller to vibrate at higher frequencies at higher rotational speeds, with a sharper audible sensation, accompanied by increased noise.

In the related art, physical sound insulation modes such as noise reduction sponge and the like are added on the outer surfaces of the blades, but the mode causes the wind resistance of the air duct to be increased and the flow area of the fan to be reduced while sound insulation is carried out, so that the performance of the whole machine is affected.

Disclosure of Invention

The application aims to provide cleaning equipment, a movable impeller and a fan structure, which can reduce noise under the condition of ensuring the performance of the fan.

In order to achieve the above object, according to one aspect of the present application, there is provided a cleaning apparatus having a fan structure, the fan structure at least including a housing and a movable impeller mounted to the housing, wherein the movable impeller includes a first disk member and a plurality of first blades, the plurality of first blades are arranged on the first disk member along a circumferential direction of the first disk member, a first air duct is formed between two adjacent first blades, and a notch is provided at an air outlet end of the first blade along a flow direction of an air flow in the first air duct, and shapes and/or sizes of the notches of at least two adjacent first blades are different.

In order to achieve the above object, another aspect of the present application provides a cleaning apparatus, which has a fan structure, where the fan structure at least includes a cover body and a movable impeller mounted on the cover body, the movable impeller includes a first disk member and a plurality of first blades, the plurality of first blades are arranged on the first disk member along a circumferential direction of the first disk member, a first air duct is formed between two adjacent first blades, and a notch is provided at an air outlet end of the first blade along a flow direction of an air flow in the first air duct, and heights of the notches of at least two adjacent first blades are different.

In order to achieve the above purpose, the application further provides a movable impeller, which comprises a first disc, a second disc and a plurality of first blades, wherein the first disc and the second disc are coaxial and are arranged at intervals, the plurality of first blades are arranged between the first disc and the second disc along the circumferential direction of the first disc, a first air channel is formed between two adjacent first blades, a first air inlet is formed in the second disc, the first air channel is communicated with the first air inlet, a notch is formed at the air outlet end of each first blade along the air flow direction in the first air channel, and the shapes and/or the sizes of the notches of at least two adjacent first blades are different.

In order to achieve the above object, another aspect of the present application further provides a fan structure, where the fan structure at least includes a cover body and a movable impeller mounted on the cover body, the movable impeller includes a first disc and a plurality of first blades, the plurality of first blades are arranged on the first disc along a circumferential direction of the first disc, a first air duct is formed between two adjacent first blades, and a notch is disposed at an air outlet end of the first blade along a flow direction of air in the first air duct, and shapes and/or sizes of the notches of at least some two adjacent first blades are different.

Therefore, according to the technical scheme provided by the application, the first blades are provided with the notches at the air outlet end along the air flow direction in the first air duct, and at least part of the notches of the two adjacent first blades are different in shape and/or size. When the air flow is discharged from the impeller, the air flow can be disturbed by different notches, and the frequency multiplication rule determined by the number of the blades is disturbed, so that the blade frequency energy is reduced, the aerodynamic performance of the impeller is optimized, the possible noise or vibration problem is reduced, and the hearing is improved while the noise is reduced. Compared with the mode of adding the silencing part on the outer surface of the blade in the related art, the flow area of the fan can be prevented from being influenced only by the shape improvement of the air outlet end of the first blade, the airflow rate is ensured, and the performance of the whole machine is not influenced.

Drawings

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

FIG. 1 is a schematic front view of a blower structure according to one embodiment of the present application;

FIG. 2 is a schematic front view of a rotor blade in an embodiment of the present application;

FIG. 3 is a schematic perspective view of a blower structure according to another embodiment of the present application;

FIG. 4 is a schematic perspective view of a rotor blade in another embodiment of the present application;

FIG. 4a is an expanded view of the outer peripheral surface of the impeller in one embodiment provided by the present application;

FIG. 4b is an expanded view of the outer peripheral surface of the impeller in another embodiment provided by the present application;

FIG. 5 is a schematic view of a portion of a blower structure according to another embodiment of the present application;

FIG. 6 is a schematic perspective view of a blower configuration with an upper housing removed in accordance with another embodiment of the present application;

FIG. 7 is a schematic view of another portion of a blower configuration according to another embodiment of the present application;

FIG. 8 is a schematic top view of a stator impeller in one embodiment provided by the present application;

FIG. 9 is a schematic front view of a stator impeller in one embodiment provided by the present application;

reference numerals illustrate:

100. 110, upper housing, 111, inlet, 120, lower housing, 121, outlet;

200. The device comprises a movable impeller, a first disc, 220, first blades, 221, a notch, 230, a first air duct, 240, a second disc, 241 and a first air inlet;

300. The fixed impeller comprises 310 parts, a second blade part, 320 parts and a supporting seat;

400. and a motor.

Detailed Description

The inside of the fan structure is usually provided with a movable impeller rotating along with a motor shaft and a fixed impeller not rotating along with the shaft, the fan structure rotates through the movable impeller in the fan structure to realize the function of air suction and air supply, and air sent out by the movable impeller passes through the fixed impeller and is guided and rectified by the fixed impeller, so that air flow enters a subsequent pipeline or system in a more orderly manner, the rotation and vortex of the air flow are reduced, and the energy loss is reduced.

The blades of the movable impeller are of metal riveting structures, are arranged uniformly without gaps, and are identical. When the impeller is operated, the airflow is discharged regularly through the fixed impeller, and frequency doubling energy corresponding to the number of blades, namely so-called impeller blade frequency doubling, is generated. This frequency doubling causes the impeller to vibrate at higher frequencies at higher rotational speeds, with a sharper audible sensation, accompanied by increased noise. The blades of the fixed impeller are arranged in a vertical radial equal-height mode, and larger wind resistance can be generated when the air flow passes through the fixed impeller, and the arrangement mode is not beneficial to smooth flow of the air flow. When the air flow passes through the fixed impeller, the air flow generates larger resistance due to the physical obstruction of the blades and the change of the air flow direction, thereby causing energy loss and noise generation. When the air flow beats the fixed impeller, the frequency doubling energy of the regular fixed impeller blade number, namely the so-called fixed impeller blade frequency doubling phenomenon, is also easy to generate. This phenomenon is more pronounced at higher impeller speeds, and the higher the frequency, the sharper the audible sensation and the greater the noise. Moreover, the vertical fixed impeller has no windward angle, so that the resistance to the rotary airflow discharged by the impeller is high, particularly when the air leakage phenomenon exists, the air inlet quantity is increased, the wind resistance is further increased, the air exhaust efficiency is affected, and the vacuum degree is possibly reduced, so that the normal use of cleaning equipment (such as a window cleaning robot or a sweeping robot) is affected.

In the related art, physical sound insulation modes such as noise reduction sponge and the like are added on the outer surfaces of the blades, but the mode causes the wind resistance of the air duct to be increased and the flow area of the fan to be reduced while sound insulation is carried out, so that the performance of the whole machine is affected.

Therefore, the application thinks that the air outlet ends of the blades of the movable impeller are provided with the gaps, and the gaps of the two adjacent blades are inconsistent, so that when the movable impeller operates, air flows flow through the gaps when the air flows out of the movable impeller, different gaps can disturb the air flows, disturb the frequency multiplication rule of the number of the blades, reduce the frequency multiplication energy, further reduce noise and improve hearing. Compared with the mode of adding the silencing part on the outer surface of the blade in the related art, the flow area of the fan can be prevented from being influenced, the airflow flow is ensured, and the performance of the whole machine is not influenced.

Meanwhile, the vanes of the fixed impeller are designed to be placed in a mode that the wing sections are sweepback inclined and are not equal in height or are not equal in angle. Therefore, when irregular airflow discharged by the movable impeller flows through the blades of the fixed impeller, the irregular airflow can be disturbed again by the blades of the fixed impeller, and the frequency doubling energy is reduced, so that the noise is further reduced. And the fixed impeller is placed in a sweepback way, has a certain attack angle, has smaller windage loss, and is more smooth in exhaust, thereby being beneficial to maintaining the vacuum degree.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application.

The application provides a fan structure, which can be applied to household appliances such as a sweeping robot, a floor washing machine, a window cleaning robot and the like, and can be applied to other equipment needing to exhaust air or blow air, and the application is not particularly limited to the above.

Referring to fig. 1 to 4, in one embodiment, the fan structure may include at least a housing 100 and a moving impeller 200 mounted to the housing 100. The cover body 100 is used as a main body part of the fan structure and is mainly used for supporting and protecting other parts of the fan structure, and meanwhile, the cover body 100 can also play a role in guiding air flow discharged by the movable impeller 200 arranged in the cover body, so that the air flow discharged by the movable impeller 200 flows according to a preset path.

The movable impeller 200 includes a first disc 210 having two end surfaces disposed opposite to each other and an outer circumferential surface connected between the two end surfaces, and a plurality of first blades 220 disposed on one of the end surfaces of the first disc 210. The plurality of first blades 220 are arranged on the first disk 210 along the circumferential direction of the first disk 210, and a first air channel 230 is formed between two adjacent first blades 220, and when the movable impeller 200 operates, the movable impeller 200 sucks air in the axial direction to form an air flow, and the air flow flows through the first air channel 230 and is output. Along the airflow direction in the first air duct 230, the first blades 220 have an air inlet end and an air outlet section, the air outlet end of the first blades 220 (i.e. the end of the first blades 220 adjacent to the outer peripheral surface of the first disc 210 in fig. 2 and 4) is provided with a notch 221, and at least part of the notches 221 of two adjacent first blades 220 have different shapes and/or sizes. Thus, when the air flow exits the impeller 200, having different notches 221 can disrupt the air flow, disrupting the frequency multiplication law determined by the number of blades, thereby reducing the blade frequency energy, optimizing the aerodynamic performance of the impeller and reducing possible noise or vibration problems.

Moreover, it should be noted that, compared with the mode of adding the silencing component on the outer surface of the blade in the related art, the embodiment only aims at the shape improvement of the air outlet end of the first blade, so that the influence on the flow area of the fan can be avoided, the airflow flow is ensured, and the performance of the whole machine is not influenced.

In practical applications, the notches 221 of two adjacent first blades 220 may be substantially identical in shape but different in size, for example, the notches 221 of two adjacent first blades 220 are each V-shaped, but the openings of the V-shaped structures are different in size or the V-shaped depths are different. The notches 221 of two adjacent first blades 220 may also be different in shape and size, for example, one notch 221 of two adjacent first blades 220 is circular and one notch is rectangular. The plurality of first blades 220 may be uniformly arranged along the circumferential direction of the first disc 210, or may be unevenly arranged along the circumferential direction of the first disc 210.

Preferably, the notches 221 of the plurality of first blades 220 are each shaped and/or sized differently so as to disrupt the airflow as much as possible.

In one possible embodiment, the first disk 210 and the plurality of first vanes 220 are integrally formed, thereby improving the relative stability between the first disk 210 and the plurality of first vanes 220. In practical applications, the first disc 210 and the plurality of first blades 220 may be integrally formed by injection molding, casting, 3D printing, or the like.

It should be noted that, the dimensions of the notch 221 refer to the dimensions of the notch 221, and also include the dimensions of the height of the notch 221 at the air outlet end of the first blade 220, that is, when the heights of the notches 221 of two adjacent first blades 220 are different, the problem of reducing the running noise of the fan structure can be also achieved.

In one embodiment, at least a portion of the plurality of notches 221 of the first plurality of blades 220 are arranged in a sequential order along the circumferential direction, thereby facilitating the maintenance of dynamic balance of the fan structure operating chamber.

The arrangement mode may include the following two modes:

First, as shown in fig. 4a, the heights of the indentations 221 of all the first blades 220 are sequentially arranged over the entire outer circumference, i.e., sequentially arranged from low to high.

The notches 221 of all the first blades 220 on the entire outer circumference are divided into a plurality of groups, and the notches 221 of the first blades 220 in each group are sequentially arranged according to the height. For example, as shown in fig. 4b, the impeller 200 has 8 first blades 220 divided into two groups, the two groups being circumferentially distributed, and 4 first blades 220 of each group being arranged in order of height in the circumferential direction.

Regarding the specific structure of the impeller 200, the present application provides two possible embodiments for reference.

In the first embodiment, as shown in fig. 2, the movable vane wheel 200 is composed of a first disk 210 and a plurality of first vanes 220 provided on one end surface of the first disk 210. After the impeller 200 is assembled with the shroud 100, the first blade 220 of the impeller 200 is at least partially exposed to the shroud 100.

In the second embodiment, as shown in fig. 4, the impeller 200 may further include a second disc 240. The second disc 240 is disposed on one side of the first disc 210 and is disposed coaxially with the first disc 210, the plurality of first blades 220 are disposed between the first disc 210 and the second disc 240, the second disc 240 is provided with a first air inlet 241, and the first air duct 230 is communicated with the first air inlet 241. When the movable impeller 200 is operated, the movable impeller 200 draws the external air through the first air inlet 241 to form an air flow, and the air flow flows through the first air duct 230. After the impeller 200 is assembled with the cover 100, the first blade 220 of the impeller 200 is not exposed from the cover 100, so that the aesthetic degree of the fan structure is improved, and other possible dangerous problems caused by the exposure of the first blade 220 are avoided.

In practical applications, the first disc 210, the second disc 240 and the plurality of first blades 220 are integrally formed, thereby improving the relative stability between the first disc 210, the second disc 240 and the plurality of first blades 220. In practical applications, the first disc 210, the second disc 240, and the plurality of first blades 220 may be integrally formed by injection molding, casting, 3D printing, or the like.

The following description will proceed with the structure of the impeller 200 in the second embodiment as an example.

In one embodiment, the cover 100 may be integrally formed, but to facilitate assembly of the impeller 200, the cover 100 may be formed of a multi-stage structure, such as a two-stage structure along an axial direction of the cover 100 or a two-stage structure along a radial direction of the cover 100.

Taking the case 100 as an example of a two-stage splice structure along the axial direction of the case 100, as shown in fig. 3 and 5, in one possible embodiment, the case 100 may include an upper case 110 having an inlet 111 and a lower case 120 having an outlet 121. The upper and lower cases 110 and 120 are arranged in an axial direction of the case body 100, the upper and lower cases 110 and 120 are surrounded to form a flow guide passage in which the movable impeller 200 is installed, and the inlet 111 communicates with the outlet 121 through the first air duct 230.

As shown in fig. 6 and 7, in one possible embodiment, the fan structure may also include a stator impeller 300. The stator impeller 300 includes a plurality of second blades 310, the stator impeller 300 is mounted to the guide passage, and the second blades 310 are located at the outer circumference of the first blades 220. When the impeller 200 is operated, the external air inlet 111 enters the guide passage, then flows to the second vane 310 through the first air duct 230, and finally is discharged through the outlet 121. The stator impeller 300 serves to guide and rectify the airflow discharged from the impeller 200 so that the airflow enters the subsequent duct or system in a more orderly manner.

In practical applications, the outer peripheral surface of the cover 100 at the outlet 121 is further provided with an exhaust passage penetrating through both inner and outer sides of the cover 100, and when the air flow reaches the outlet 121, the air flow can flow out through the exhaust passage, i.e. in the direction of the dashed arrow shown in fig. 5.

In one embodiment, the second blades 310 may be at least partially coplanar with the first blades 220, and the plurality of second blades 310 may be at least circumferentially surrounding the impeller 200.

Referring again to fig. 6 and 7, in another alternative embodiment, the stator 300 may further include a supporting seat 320 coaxially disposed with the impeller 200, and the impeller 200 and the supporting seat 320 are disposed along an axial direction. The plurality of second blades 310 are disposed on the outer circumferential surface of the support base 320 and are spaced apart along the circumference of the support base 320. The plurality of second blades 310 are located on a side of the first disk 210 away from the second disk 240, that is, the plurality of second blades 310 are axially aligned with the impeller 200 (as shown in fig. 6, the plurality of second blades 310 are located below the impeller 200), and the orthographic projection of the plurality of second blades 310 on the impeller 200 is at least partially located outside the impeller 200.

In the present embodiment, a passage through which the air flow is formed may be surrounded between the outer circumferential surface of the movable impeller 200 and the outer circumferential surface of the support seat 320 and the inner wall surface of the casing 100, so that the air flow discharged from the movable impeller 200 may flow to the plurality of second blades 310 through the remaining passage.

In practical applications, the stator 300 is installed in the lower housing 120, and the stator 300 may be connected to the lower housing 120 through a connecting frame, so as to be fixed in the lower housing 120. Of course, the stator impeller 300 can also be connected with the inner wall surface of the lower housing 120 through the second blade 310, so that no additional connecting frame is needed, the influence of the connecting frame on the flow area of the fan structure is avoided, and the working performance of the fan structure is ensured.

As shown in fig. 5 and 6, in one possible embodiment, the support base 320 is provided with a mounting groove on a side thereof remote from the movable impeller 200. The fan structure further comprises a motor 400, the motor 400 is installed in the installation groove, and an output shaft of the motor 400 penetrates through the supporting seat 320 to be in driving connection with the movable impeller 200, so that the fan structure can be more compact, and the purpose of miniaturization design is achieved.

In one implementation, an included angle β exists between the line connecting the front end and the rear end of the second blade 310 and the axis of the supporting seat 320, and the included angle β is not zero. That is, the second blade 310 is disposed obliquely with respect to the support 320, and the second blade 310 has a windward angle, so that the resistance to the rotational airflow discharged from the stator impeller 300 is small, thereby better adapting to the airflow, reducing the impact of the airflow on the second blade 310, and reducing noise and vibration. In addition, the air flow can be inclined when flowing out of the fixed impeller 300, and the flow resistance ratio when the whole machine air outlet flow channel turns again can be reduced.

Further, the second blades 310 of the stator vane 300 may be configured in an airfoil type swept-back structure, so that by placing the second blades 310 in an inclined swept-back manner, a certain windward angle may be provided, which makes the windage relatively small, and even if the air intake increases in the case of air leakage, the windage loss of the stator vane 300 is relatively small, which is beneficial to the air exhaust smoothness, and thus the vacuum degree maintenance. Especially for the window cleaning robot, the window cleaning robot can be firmly adsorbed on the glass surface, and the risk of unexpected falling of the window cleaning robot is avoided.

In order to further reduce noise generated by the fan structure, as shown in fig. 8, in one implementation, at least part of the center angles α of the adjacent second blades 310 are inconsistent, specifically α1+.α2. In this way, the plurality of second blades 310 are unevenly distributed along the circumference of the support 320, so that the flow characteristics of the air flow in the stator impeller 300 can be changed, and thus when the irregular air flow discharged from the impeller 200 flows through the blades of the stator impeller 300, the irregular air flow is disturbed again by the blades of the irregular stator impeller 300, thereby reducing the frequency doubling energy and further reducing the noise.

It should be noted that, the circular included angle α of the adjacent second blades 310 defined in the present application refers to an included angle formed by connecting the adjacent two second blades 310 with the center of the supporting seat 320 in the top view of the stator impeller 300 as shown in fig. 8.

Preferably, the included angles alpha between the centers of the second blades 310 of the stator vane 300 are not uniform.

In order to further reduce noise generated by the fan structure, as shown in fig. 9, at least part of the included angles β between two adjacent second blades 310 and the axis of the supporting seat 320 are inconsistent, specifically β1+.β2. In this way, the plurality of second blades 310 have different inclinations, so that the flow characteristics of the air flow in the stator impeller 300 can be changed, and when the irregular air flow discharged from the movable impeller 200 flows through the blades of the stator impeller 300, the irregular air flow is disturbed again by the blades of the irregular stator impeller 300, thereby reducing the frequency doubling energy and further reducing the noise.

Preferably, the included angles β between the plurality of second blades 310 and the axis of the supporting seat 320 are not consistent.

To further reduce noise generated by the fan structure, as shown in fig. 9, at least part of two adjacent second blades 310 are not uniform in axial height of the support seat 320. In this way, the contact time and the separation time of the airflow with the plurality of second blades 310 can be made different, and the flow characteristics of the airflow in the stator impeller 300 can be changed, so that when the irregular airflow discharged from the movable impeller 200 flows through the blades of the stator impeller 300, the irregular airflow is disturbed again by the blades of the irregular stator impeller 300, and the frequency doubling energy is reduced, thereby further reducing noise.

It should be noted that the stator impeller 300 may be used to reduce noise in the above three ways, or may be used in any one or two ways, which is not particularly limited in the present application.

In one possible embodiment, at least some of the adjacent two second blades 310 are not identical in axial position of the support 320. In this way, it is also possible to achieve that the contact time and the separation time of the air flow with the plurality of second blades 310 are different, and the flow characteristics of the air flow in the fixed impeller 300 can be changed, so that when the irregular air flow discharged from the movable impeller 200 flows through the blades of the fixed impeller 300, the irregular air flow is disturbed again by the blades of the irregular fixed impeller 300, and the frequency doubling energy is reduced, thereby further reducing noise.

Based on the same inventive concept, the application also provides a movable impeller. The impeller 200 may be integrally mounted in the fan structure as a separate component or may be integrally removed from the fan structure.

Specifically, the impeller 200 includes a first disk 210, a second disk 240, and a plurality of first blades 220. The first disk 210 and the second disk 240 are coaxially and alternately disposed, and a plurality of first blades 220 are disposed between the first disk 210 and the second disk 240 in the circumferential direction of the first disk 210, and a first air channel 230 is formed between two adjacent first blades 220. The second disc 240 is provided with a first air inlet 241, and the first air duct 230 is communicated with the first air inlet 241. Along the airflow flowing direction in the first air duct 230, the air outlet end of the first blade 220 is provided with a notch 221, and the shapes and/or the sizes of the notches 221 of at least two adjacent first blades 220 are different.

Based on the same inventive concept, the application also provides a cleaning device, which has a fan structure, wherein the fan structure at least comprises a cover body 100 and a movable impeller 200 mounted on the cover body 100, the movable impeller 200 comprises a first disc 210 and a plurality of first blades 220, the plurality of first blades 220 are arranged on the first disc 210 along the circumferential direction of the first disc 210, a first air channel 230 is formed between two adjacent first blades 220, gaps 221 are formed at the air outlet ends of the first blades 220 along the air flow direction in the first air channel 230, and the heights of the gaps 221 of at least part of two adjacent first blades 220 are different.

Further, at least a portion of the plurality of first blades 220 have notches 221 arranged in a circumferential direction.

The terms "upper" and "lower" are used to describe the relative positional relationship of the respective structures in the drawings, and are merely for convenience of description, not to limit the scope of the application, and the change or adjustment of the relative relationship is considered to be within the scope of the application without substantial change of technical content.

It is noted that in the present application, unless expressly stated or limited otherwise, a first feature may be "on" or "off" a second feature, either by direct contact of the first and second features or by indirect contact of the first and second features via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In addition, in the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, directly connected, indirectly connected through an intermediary, or may be in communication with one another between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be noted that the above embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present application.

Claims (15)

1. A cleaning apparatus having a blower structure, characterized in that the blower structure comprises at least a housing (100) and a movable impeller (200) mounted to the housing (100), wherein,

The movable impeller (200) comprises a first disc (210) and a plurality of first blades (220), wherein the plurality of first blades (220) are arranged on the first disc (210) along the circumferential direction of the first disc (210), and a first air channel (230) is formed between two adjacent first blades (220);

Along the air flow direction in the first air duct (230), the air outlet end of the first blade (220) is provided with a notch (221), and at least part of adjacent notches (221) of two first blades (220) are different in shape and/or size.

2. The cleaning apparatus of claim 1, wherein the impeller (200) further comprises a second disc (240);

The second disc (240) is arranged on one side of the first disc (210), and is coaxially arranged with the first disc (210), the plurality of first blades (220) are arranged between the first disc (210) and the second disc (240), a first air inlet (241) is formed in the second disc (240), and the first air channel (230) is communicated with the first air inlet (241).

3. The cleaning apparatus of claim 2, wherein the blower structure further comprises a stationary impeller (300);

The stator impeller (300) comprises a plurality of second blades (310), a diversion channel is formed in the surrounding of the cover body (100), the stator impeller (300) is installed in the diversion channel, and the second blades (310) are located on the periphery of the first blades (220).

4. A cleaning apparatus according to claim 3, characterized in that the stator impeller (300) further comprises a support seat (320) coaxially arranged with the rotor impeller (200);

The plurality of second blades (310) are arranged on the outer peripheral surface of the supporting seat (320) and are arranged at intervals along the circumferential direction of the supporting seat (320);

the plurality of second blades (310) are located on a side of the first disk (210) remote from the second disk (240), and orthographic projections of the plurality of second blades (310) on the impeller (200) are located at least partially outside the impeller (200).

5. The cleaning apparatus of claim 4, wherein at least a portion of the adjacent second blades (310) have a non-uniform included angle;

And/or, at least part of adjacent two second blades (310) are inconsistent with the axis included angle of the supporting seat (320).

6. A cleaning device according to claim 4 or 5, characterized in that at least part of adjacent two of the second blades (310) are not uniform in axial height of the support (320).

7. The cleaning apparatus of claim 4, wherein an axis angle exists between a line connecting the front end and the rear end of the second blade (310) and the axis of the support base (320), and the axis angle is not zero.

8. The cleaning apparatus of claim 7, wherein the second blade (310) is configured as an airfoil sweep structure.

9. The cleaning apparatus according to claim 1, wherein the housing (100) comprises an upper casing (110) having an inlet (111) and a lower casing (120) having an outlet (121);

The upper housing (110) and the lower housing (120) are surrounded to form a diversion channel, the movable impeller (200) is installed in the diversion channel, and the inlet (111) is communicated with the outlet (121) through the first air duct (230).

10. The cleaning apparatus of claim 1, wherein the first disc (210) and the plurality of first blades (220) are of unitary construction.

11. A cleaning device according to claim 1, characterized in that the indentations (221) of at least part of the first blades (220) are arranged in sequence in the circumferential direction.

12. A cleaning apparatus having a blower structure, characterized in that the blower structure comprises at least a housing (100) and a movable impeller (200) mounted to the housing (100), wherein,

The movable impeller (200) comprises a first disc (210) and a plurality of first blades (220), wherein the plurality of first blades (220) are arranged on the first disc (210) along the circumferential direction of the first disc (210), and a first air channel (230) is formed between two adjacent first blades (220);

Along the air flow direction in the first air duct (230), the air outlet end of the first blade (220) is provided with a notch (221), and the heights of the notches (221) of at least two adjacent first blades (220) are different.

13. The cleaning apparatus of claim 12, wherein at least a portion of the plurality of first blades (220) have notches with a height that is aligned in a circumferential direction.

14. A rotor blade wheel, characterized in that the rotor blade wheel (200) comprises a first disc (210), a second disc (240) and a plurality of first blades (220);

The first disc (210) and the second disc (240) are coaxial and are arranged at intervals, the plurality of first blades (220) are arranged between the first disc (210) and the second disc (240) along the circumferential direction of the first disc (210), and a first air channel (230) is formed between two adjacent first blades (220);

The second disc (240) is provided with a first air inlet (241), and the first air channel (230) is communicated with the first air inlet (241);

Along the air flow direction in the first air duct (230), the air outlet end of the first blade (220) is provided with a notch (221), and the shapes and/or the sizes of the notches (221) of at least two adjacent first blades (220) are different.

15. A fan structure is characterized in that the fan structure at least comprises a cover body (100) and a movable impeller (200) arranged on the cover body (100), wherein,

The movable impeller (200) comprises a first disc (210) and a plurality of first blades (220), wherein the plurality of first blades (220) are arranged on the first disc (210) along the circumferential direction of the first disc (210), and a first air channel (230) is formed between two adjacent first blades (220);

Along the air flow direction in the first air duct (230), the air outlet end of the first blade (220) is provided with a notch (221), and at least part of the notches (221) of two adjacent first blades (220) are different in shape and/or size.