Cleaning equipment, movable impeller and fan structure

Abstract

The utility model discloses a cleaning device, a movable impeller and a fan structure, the cleaning device is provided with the fan structure, the fan structure at least comprises a cover body and the movable impeller installed on the cover body, the movable impeller comprises a first disc piece and a plurality of first blades, and the first disc piece is provided with a plurality of second blades. The multiple first blades are arranged on the first disc part in the circumferential direction of the first disc part, and a first air channel is formed between every two adjacent first blades; notches are formed in the air outlet ends of the first blades in the flowing direction of airflow in the first air duct, and the notches of at least part of every two adjacent first blades are different in shape and / or size. According to the technical scheme provided by the invention, the noise can be reduced under the condition of ensuring the performance of the fan.

Description

Technical Field

[0001] This application relates to the field of fans, and particularly to a cleaning device, a moving impeller, and a fan structure. Background Art

[0002] The fan realizes the function of suction and air supply through the rotation of the impeller therein. When the impeller is running, due to the regular discharge of the air flow through the impeller, frequency-doubled energy corresponding to the number of blades will be generated, that is, the so-called impeller blade frequency doubling. This frequency doubling phenomenon will cause the impeller to generate higher-frequency vibrations at high speeds, which are sharper in auditory sense and accompanied by an increase in noise.

[0003] In the related art, physical sound insulation methods such as adding sound-absorbing sponges to the outer surface of the blades are adopted. However, while this method insulates sound, it increases the air duct resistance and reduces the fan flow area, thus affecting the overall performance of the machine. Summary of the Invention

[0004] The purpose of this application is to provide a cleaning device, a moving impeller, and a fan structure, which can reduce noise while ensuring the performance of the fan.

[0005] To achieve the above purpose, on the one hand, this application provides a cleaning device with a fan structure. The fan structure at least includes a housing and a moving impeller installed in the housing. Among them, the moving impeller includes a first disc member and a plurality of first blades. The plurality of first blades are arranged circumferentially on the first disc member, and a first air duct is formed between adjacent two of the first blades; along the air flow direction in the first air duct, a notch is provided at the air outlet end of the first blade, and the shapes and / or sizes of the notches of at least some adjacent two of the first blades are different.

[0006] To achieve the above purpose, on the other hand, this application also provides a cleaning device with a fan structure. The fan structure at least includes a housing and a moving impeller installed in the housing. Among them, the moving impeller includes a first disc member and a plurality of first blades. The plurality of first blades are arranged circumferentially on the first disc member, and a first air duct is formed between adjacent two of the first blades; along the air flow direction in the first air duct, a notch is provided at the air outlet end of the first blade, and the heights of the notches of at least some adjacent two of the first blades are different.

[0007] To achieve the above object, on the other hand, the present application further provides an impeller, which includes a first disc member, a second disc member and a plurality of first blades; the first disc member and the second disc member are coaxially arranged and spaced apart, and the plurality of first blades are circumferentially arranged between the first disc member and the second disc member, and a first air duct is formed between two adjacent first blades; a first air inlet is provided on the second disc member, and the first air duct is communicated with the first air inlet; along the air flow direction in the first air duct, a notch is provided at the air outlet end of the first blade, and the shapes and / or sizes of the notches of at least two adjacent first blades are different.

[0008] To achieve the above object, on the other hand, the present application further provides a fan structure, which at least includes a housing and an impeller installed in the housing. Among them, the impeller includes a first disc member and a plurality of first blades, and the plurality of first blades are circumferentially arranged on the first disc member, and a first air duct is formed between two adjacent first blades; along the air flow direction in the first air duct, a notch is provided at the air outlet end of the first blade, and the shapes and / or sizes of the notches of at least some adjacent first blades are different.

[0009] It can be seen from this that in the technical solution provided by the present application, a notch is provided at the air outlet end of the first blade along the air flow direction in the first air duct, and the shapes and / or sizes of the notches of at least some adjacent first blades are different. In this way, when the air flow discharges from the impeller, the different notches can disturb the air flow and disrupt the multiple frequency 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; while reducing the noise, it can also improve the listening experience. And, compared with the method of adding sound-absorbing components on the outer surface of the blade in the related art, the improvement of only the shape of the air outlet end of the first blade in this embodiment can also avoid affecting the flow area of the fan, ensure the air flow rate, and does not affect the overall performance of the machine. Description of the Drawings

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0011] Figure 1 is the front view schematic diagram of a fan structure in an embodiment provided by the present application;

[0012] Figure 2 is the front view schematic diagram of an impeller in an embodiment provided by the present application;

[0013] Figure 3 It is a three-dimensional schematic diagram of the fan structure in another embodiment provided by the present application;

[0014] Figure 4 It is a three-dimensional schematic diagram of the impeller in another embodiment provided by the present application;

[0015] Figure 4a It is a developed schematic diagram of the outer peripheral surface of the impeller in one embodiment provided by the present application;

[0016] Figure 4b It is a developed schematic diagram of the outer peripheral surface of the impeller in another embodiment provided by the present application;

[0017] Figure 5 It is a partial structural schematic diagram of the fan structure in another embodiment provided by the present application;

[0018] Figure 6 It is a three-dimensional schematic diagram of the fan structure after removing the upper housing in another embodiment provided by the present application;

[0019] Figure 7 It is another partial structural schematic diagram of the fan structure in another embodiment provided by the present application;

[0020] Figure 8 It is a top view schematic diagram of the stator impeller in one embodiment provided by the present application;

[0021] Figure 9 It is a front view schematic diagram of the stator impeller in one embodiment provided by the present application;

[0022] Explanation of reference numerals:

[0023] 100, housing; 110, upper housing; 111, inlet; 120, lower housing; 121, outlet;

[0024] 200, impeller; 210, first disc member; 220, first blade; 221, notch; 230, first air duct; 240, second disc member; 241, first air inlet;

[0025] 300, stator impeller; 310, second blade; 320, support seat;

[0026] 400, motor. Detailed implementation manners

[0027] Inside the fan structure, there are usually a rotating impeller that rotates with the motor shaft and a stationary impeller that does not rotate with the shaft. The fan structure realizes the function of suction and air supply through the rotation of the rotating impeller inside it. The air sent out by the rotating impeller passes through the stationary impeller, and the stationary impeller conducts flow guiding and rectification, enabling the air flow to enter the subsequent pipeline or system in a more orderly manner, reducing the rotation and eddy current of the air flow, thereby reducing energy loss.

[0028] Among them, the blades of the rotating impeller are of a metal riveting structure, without notches and evenly arranged, and each blade is the same. When the rotating impeller is running, due to the regular discharge of the air flow through the stationary impeller, frequency-doubled energy corresponding to the number of blades will be generated, that is, the so-called rotating impeller blade frequency doubling. This frequency doubling phenomenon will cause the rotating impeller to generate higher-frequency vibrations at high speeds, which are sharper in auditory perception and are accompanied by an increase in noise. The blades of the stationary impeller are mostly arranged in a vertical and radial equal-height manner. When the air flow passes through, it will generate a large wind resistance, mainly because this arrangement is not conducive to the smooth flow of the air flow. When the air flow passes through the stationary impeller, due to the physical obstruction of the blades and the change of the air flow direction, a large resistance will be generated, which will further lead to energy loss and the generation of noise. When the air flow beats against the stationary impeller, it is also easy to generate frequency-doubled energy corresponding to the number of blades of the stationary impeller, that is, the so-called stationary impeller blade frequency doubling phenomenon. This phenomenon is more significant when the impeller speed is higher. The higher the frequency, the sharper the auditory perception and the greater the noise. Moreover, since the vertical stationary impeller has no windward angle, the resistance to the rotating air flow discharged by the impeller is relatively large. Especially when there is an air leakage phenomenon, the air intake volume increases and the wind resistance further increases, affecting the exhaust efficiency, and may further lead to a decrease in vacuum degree, affecting the normal use of cleaning equipment (such as window cleaning robots or floor cleaning robots).

[0029] In the related art, physical sound insulation methods such as adding sound-absorbing sponges to the outer surface of the blades are adopted, but this method increases the wind resistance of the air duct and reduces the through-flow area of the fan while achieving sound insulation, thereby affecting the performance of the whole machine.

[0030] Therefore, in this application, it is considered to set notches at the air outlet ends of the blades of the rotating impeller, and the notches of adjacent two blades are inconsistent. Thus, when the rotating impeller is running, when the air flow discharges from the rotating impeller, it flows through the notches. Different notches will disrupt the air flow, disrupt the blade number frequency doubling law, reduce the frequency-doubled energy, and thus reduce the noise and improve the auditory perception. Moreover, compared with the method of adding sound-absorbing components to the outer surface of the blades in the related art, it can also avoid affecting the through-flow area of the fan, ensure the air flow rate, and does not affect the performance of the whole machine.

[0031] Meanwhile, the present application also designs the blades of the stationary impeller in a way that they are arranged in a wing-shaped swept-back manner with unequal heights or unequal angles. In this way, when the irregular air flow discharged by the rotating impeller flows through the blades of the stationary impeller, it will be disturbed again by the irregular blades of the stationary impeller, reducing the double-frequency energy and thus further reducing the noise. Moreover, the stationary impeller is arranged in a swept-back and inclined manner with a certain angle of attack, resulting in a relatively small wind resistance. The wind resistance loss of the stationary impeller is relatively smaller, and the exhaust is smoother, which is conducive to maintaining the vacuum degree.

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in 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. Apparently, the described embodiments are some, but not all, of the embodiments of the present application.

[0033] The present application provides a fan structure, which can be applied to household appliances such as floor sweeping robots, floor washing machines, and window cleaning robots. Of course, this fan structure can also be applied to other devices that require air extraction or blowing. The present application does not make specific limitations in this regard.

[0034] Please refer to Figures 1 to 4 , in an implementable embodiment, the fan structure may at least include a housing 100 and a rotating impeller 200 installed in the housing 100. Among them, the housing 100 serves as the main part of the fan structure, which is mainly used to support and protect the other components of the fan structure. At the same time, the housing 100 can also guide the air flow discharged by the rotating impeller 200 installed therein, so that the air flow discharged by the rotating impeller 200 flows along a preset path.

[0035] The rotating impeller 200 includes a first disk member 210 and a plurality of first blades 220. The first disk member 210 has two end faces arranged oppositely and an outer peripheral surface connecting the two end faces. The plurality of first blades 220 are arranged on one of the end faces of the first disk member 210. The plurality of first blades 220 are arranged circumferentially on the first disk member 210, and a first air duct 230 is formed between adjacent two first blades 220. When the rotating impeller 200 operates, the rotating impeller 200 sucks in gas along the axial direction to form an air flow, and the air flow flows through the first air duct 230 and is output. Along the air flow direction in the first air duct 230, the first blade 220 has an air inlet end and an air outlet section. The air outlet end of the first blade 220 (i.e., Figure 2 and Figure 4One end of the first blade 220 adjacent to the outer peripheral surface of the first disk member 210 is provided with a notch 221, and the shapes and / or sizes of the notches 221 of at least some adjacent first blades 220 are different. In this way, when the air flow discharges from the impeller 200, the different notches 221 can disrupt the air flow and break the multiple frequency 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.

[0036] Moreover, it is worth mentioning that, compared with the method of adding sound-absorbing components on the outer surface of the blade in the related art, the improvement of the shape of only the air outlet end of the first blade in this embodiment can also avoid affecting the flow area of the fan, ensure the air flow rate, and does not affect the performance of the whole machine.

[0037] In practical applications, the notches 221 of two adjacent first blades 220 may have substantially the same shape but different sizes. For example, the notches 221 of two adjacent first blades 220 are both V-shaped structures, but the opening sizes or V-shaped depths of the V-shaped structures are different. The notches 221 of two adjacent first blades 220 may also have different shapes and sizes. For example, one of the notches 221 of two adjacent first blades 220 is circular and the other is rectangular. Among them, the multiple first blades 220 may be arranged uniformly along the circumferential direction of the first disk member 210 or non-uniformly along the circumferential direction of the first disk member 210.

[0038] Preferably, the shapes and / or sizes of the notches 221 of the multiple first blades 220 are all different, so as to disrupt the air flow as much as possible.

[0039] In an implementable embodiment, the first disk member 210 and the multiple first blades 220 are of an integral structure, so as to improve the relative stability between the first disk member 210 and the multiple first blades 220. In practical applications, the first disk member 210 and the multiple first blades 220 can be integrally formed by injection molding, casting or 3D printing, etc.

[0040] It should be noted that the size of the above-mentioned notch 221 not only refers to the size of the notch 221 itself, but also includes the size of the height at which the notch 221 is located 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 operating noise of the fan structure can also be achieved.

[0041] In an implementable embodiment, the heights of the notches 221 of at least some of the multiple first blades 220 are arranged in sequence along the circumferential direction, which is beneficial to ensuring the dynamic balance of the operating chamber of the fan structure.

[0042] Among them, the arrangement method may include the following two types:

[0043] One is, such asFigure 4a As shown, the heights of the notches 221 of all the first blades 220 on the entire outer circumference are arranged in sequence, that is, arranged in ascending order.

[0044] Second, the notches 221 of all the first blades 220 on the entire outer circumference are divided into multiple groups, and the notches 221 of the first blades 220 within each group are arranged in sequence according to height. For example, as Figure 4b , the impeller 200 has 8 first blades 220, which are divided into two groups. The two groups are distributed in the circumferential direction, and 4 first blades 220 in each group are arranged in sequence according to height along the circumferential direction.

[0045] Regarding the specific structure of the impeller 200, the present application provides two feasible embodiments for reference.

[0046] Embodiment 1: As Figure 2 shown, the impeller 200 is composed of a first disc member 210 and a plurality of first blades 220 provided on one end face of the first disc member 210. After the impeller 200 is assembled with the housing 100, at least part of the first blades 220 of the impeller 200 are exposed outside the housing 100.

[0047] Embodiment 2: As Figure 4 shown, the impeller 200 may further include a second disc member 240. The second disc member 240 is provided on one side of the first disc member 210 and is coaxially arranged with the first disc member 210. A plurality of first blades 220 are located between the first disc member 210 and the second disc member 240. The second disc member 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 impeller 200 rotates, the impeller 200 extracts 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 housing 100, the first blades 220 of the impeller 200 are not exposed outside the housing 100, thereby improving the aesthetic appearance of the fan structure and avoiding other possible dangerous problems caused by the exposure of the first blades 220.

[0048] In practical applications, the first disc member 210, the second disc member 240 and the plurality of first blades 220 are of an integral structure, thereby improving the relative stability between the first disc member 210, the second disc member 240 and the plurality of first blades 220. In practical applications, the first disc member 210, the second disc member 240 and the plurality of first blades 220 can be integrally formed by injection molding, casting or 3D printing, etc.

[0049] Subsequently, taking the structure of the impeller 200 in Embodiment 2 as an example, the description will continue.

[0050] In an implementable embodiment, the cover 100 can be designed with an integral structure. However, for the convenience of assembling the impeller 200, the cover 100 can also adopt a multi-segment splicing structure. For example, a two-segment splicing structure along the axial direction of the cover 100, or a two-segment splicing structure along the radial direction of the cover 100.

[0051] Taking the cover 100 adopting a two-segment splicing structure along the axial direction of the cover 100 as an example, as Figure 3 and Figure 5 shown, in an implementable embodiment, the cover 100 can include an upper cover shell 110 with an inlet 111 and a lower cover shell 120 with an outlet 121. The upper cover shell 110 and the lower cover shell 120 are arranged along the axial direction of the cover 100. The upper cover shell 110 and the lower cover shell 120 enclose to form a diversion channel. The impeller 200 is installed in the diversion channel, and the inlet 111 is communicated with the outlet 121 through a first air duct 230.

[0052] As Figure 6 and Figure 7 shown, in an implementable embodiment, the fan structure can further include a stationary impeller 300. The stationary impeller 300 includes a plurality of second blades 310. The stationary impeller 300 is installed in the diversion channel, and the second blades 310 are located on the outer periphery of the first blades 220. When the impeller 200 rotates, the external air inlet 111 enters the diversion channel, then flows to the second blades 310 through the first air duct 230, and finally is discharged through the outlet 121. The stationary impeller 300 is used to divert and rectify the airflow discharged by the impeller 200 so that the airflow enters the subsequent pipeline or system in a more orderly manner.

[0053] In practical applications, an exhaust channel penetrating both the inner and outer sides of the cover 100 is further provided on the outer peripheral surface of the cover 100 at the outlet 121. When the airflow reaches the outlet 121, the airflow can flow out through the exhaust channel, that is, Figure 5 flow out in the direction of the dotted arrow shown.

[0054] In an implementable embodiment, at least a part of the second blades 310 can be in the same plane as the first blades 220, and the plurality of second blades 310 at least surround the outer periphery of the impeller 200.

[0055] Please refer to again Figure 6 and Figure 7As shown, in another alternative embodiment, the stationary impeller 300 may further include a support base 320 arranged coaxially with the rotating impeller 200, and the rotating impeller 200 and the support base 320 are arranged axially. A plurality of second blades 310 are arranged on the outer peripheral surface of the support base 320 and are spaced along the circumferential direction of the support base 320. The plurality of second blades 310 are located on the side of the first disc member 210 away from the second disc member 240, that is, the plurality of second blades 310 are arranged axially with the rotating impeller 200 (as Figure 6 shown, the plurality of second blades 310 are located below the rotating impeller 200), and at least a part of the orthographic projection of the plurality of second blades 310 on the rotating impeller 200 is located outside the rotating impeller 200.

[0056] In this embodiment, a channel for air flow may be formed around between the outer peripheral surface of the rotating impeller 200 and the outer peripheral surface of the support base 320 and the inner wall surface of the housing 100, so that the air flow discharged from the rotating impeller 200 can flow to the plurality of second blades 310 through the channel.

[0057] In practical applications, the stationary impeller 300 is installed in the lower housing 120. The stationary impeller 300 can be connected to the lower housing 120 through a connecting frame, so as to be fixed in the lower housing 120. Of course, the stationary impeller 300 can also be connected to the inner wall surface of the lower housing 120 through the second blades 310, so that there is no need to additionally provide a connecting frame, avoiding the connecting frame affecting the flow area of the fan structure and ensuring the working performance of the fan structure.

[0058] As Figure 5 and Figure 6 shown, in an implementable embodiment, an installation groove is provided on the side of the support base 320 away from the rotating impeller 200. The fan structure further includes a motor 400, and the motor 400 is installed in the installation groove, and the output shaft of the motor 400 passes through the support base 320 and is drivingly connected to the rotating impeller 200. In this way, the fan structure can be made more compact and the purpose of miniaturized design can be achieved.

[0059] In an implementable embodiment, there is an included angle between the line connecting the front end and the rear end of the second blade 310 and the axis of the support base 320, which is the axis included angle β, and the axis included angle β is not zero. That is to say, the second blade 310 is obliquely arranged relative to the support base 320, and the second blade 310 has a windward angle, and the resistance to the rotating air flow discharged from the stationary impeller 300 is small, so that it can better adapt to the air flow, reduce the impact of the air flow on the second blade 310, and thus reduce noise and vibration. And it can also make the air flow in an inclined state when flowing out of the stationary impeller 300, and can reduce the flow resistance ratio when the air flow in the whole machine outlet air duct turns again.

[0060] Further, the second blade 310 of the stationary impeller 300 can be configured in an airfoil swept-back structure. In this way, by arranging the second blade 310 in an inclined and swept-back manner, a certain windward angle can be obtained, which results in relatively small wind resistance. Even when there is air leakage and the air intake increases, the wind resistance loss of the stationary impeller 300 is relatively small, facilitating smoother exhaust and thus helping to maintain the vacuum degree. Especially for window cleaning robots, it can ensure that the window cleaning robot is firmly adsorbed on the glass surface, avoiding the risk of accidental detachment of the window cleaning robot.

[0061] To further reduce the noise generated by the fan structure, as Figure 8 shown, in an achievable implementation, the central angles α between at least some adjacent second blades 310 are inconsistent. Specifically, α1≠α2. In this way, the multiple second blades 310 are non-uniformly distributed along the circumference of the support base 320, which can change the flow characteristics of the air flow in the stationary impeller 300. Thus, when the irregular air flow discharged by the moving impeller 200 flows through the blades of the stationary impeller 300, it will be disturbed again by the irregular blades of the stationary impeller 300, reducing the double-frequency energy and further reducing the noise.

[0062] It should be noted that the circular angle α of the adjacent second blades 310 defined in this application refers to the angle formed by the center line connecting the adjacent two second blades 310 and the support base 320 in the top view of the stationary impeller 300 as Figure 8 shown.

[0063] Preferably, the central angles α of the second blades 310 of the stationary impeller 300 are all inconsistent.

[0064] To further reduce the noise generated by the fan structure, as Figure 9 shown, the axis angles β between at least some adjacent two second blades 310 and the support base 320 are inconsistent. Specifically, β1≠β2. In this way, the inclination degrees of the multiple second blades 310 are different, which can change the flow characteristics of the air flow in the stationary impeller 300. Thus, when the irregular air flow discharged by the moving impeller 200 flows through the blades of the stationary impeller 300, it will be disturbed again by the irregular blades of the stationary impeller 300, reducing the double-frequency energy and further reducing the noise.

[0065] Preferably, the axis angles β between the multiple second blades 310 and the support base 320 are all inconsistent.

[0066] To further reduce the noise generated by the fan structure, as Figure 9As shown, the axial heights of at least some adjacent second blades 310 are inconsistent on the support base 320. In this way, the contact time and separation time of the air flow with the multiple second blades 310 can be made different, and the flow characteristics of the air flow in the stationary impeller 300 can be changed. Thus, when the irregular air flow discharged from the moving impeller 200 flows through the blades of the stationary impeller 300, it will be disturbed again by the irregular blades of the stationary impeller 300, reducing the double-frequency energy and further reducing the noise.

[0067] It should be noted that the stationary impeller 300 can adopt the above three methods simultaneously to reduce noise, or can adopt one of them or any two of them. The present application does not make specific limitations on this.

[0068] In an implementable embodiment, the axial positions of at least some adjacent second blades 310 are inconsistent on the support base 320. In this way, it is also possible to make the contact time and separation time of the air flow with the multiple second blades 310 different, and change the flow characteristics of the air flow in the stationary impeller 300. Thus, when the irregular air flow discharged from the moving impeller 200 flows through the blades of the stationary impeller 300, it will be disturbed again by the irregular blades of the stationary impeller 300, reducing the double-frequency energy and further reducing the noise.

[0069] Based on the same inventive concept, the present application also provides a moving impeller. The moving impeller 200 can be used as an independent component and integrally installed in the fan structure, or integrally disassembled from the fan structure.

[0070] Specifically, the moving impeller 200 includes a first disk member 210, a second disk member 240, and a plurality of first blades 220. The first disk member 210 and the second disk member 240 are coaxially arranged and spaced apart. The plurality of first blades 220 are circumferentially arranged between the first disk member 210 and the second disk member 240, and a first air duct 230 is formed between adjacent two first blades 220. A first air inlet 241 is provided on the second disk member 240, and the first air duct 230 is communicated with the first air inlet 241. Along the air flow direction in the first air duct 230, a notch 221 is provided at the air outlet end of the first blade 220, and the shapes and / or sizes of the notches 221 of at least some adjacent first blades 220 are different.

[0071] Based on the same inventive concept, the present application further provides a cleaning device having a blower structure. The blower structure at least includes a housing 100 and an impeller 200 installed in the housing 100. Among them, the impeller 200 includes a first disc member 210 and a plurality of first blades 220. The plurality of first blades 220 are arranged circumferentially on the first disc member 210, and a first air duct 230 is formed between two adjacent first blades 220; along the air flow direction in the first air duct 230, a notch 221 is provided at the air outlet end of the first blade 220, and the heights of the notches 221 of at least some adjacent two first blades 220 are different.

[0072] Furthermore, the heights of the notches 221 of at least some of the plurality of first blades 220 are arranged in sequence in the circumferential direction.

[0073] Among them, terms such as "upper" and "lower" are used to describe the relative positional relationship of each structure in the drawings, only for the sake of clarity in narration, rather than to limit the scope of implementation of the present application. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present application.

[0074] It should be noted that in the present application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0075] In addition, in the present application, unless otherwise clearly specified and limited, terms such as "install", "connect", "join" and "fix" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0076] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0077] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cleaning device with a fan structure, characterized in that, The blower structure at least includes a housing (100) and an impeller (200) installed in the housing (100), wherein, The impeller (200) includes a first disk member (210) and a plurality of first blades (220). The plurality of first blades (220) are arranged circumferentially on the first disk member (210), and a first air duct (230) is formed between two adjacent first blades (220); Along the air flow direction in the first air duct (230), a notch (221) is provided at the air outlet end of the first blade (220), and the shapes and / or sizes of the notches (221) of at least some adjacent two first blades (220) are different.

2. The cleaning device according to claim 1, wherein The impeller (200) further includes a second disk member (240); The second disk member (240) is arranged on one side of the first disk member (210) and is coaxially arranged with the first disk member (210). The plurality of first blades (220) are located between the first disk member (210) and the second disk member (240). A first air inlet (241) is provided on the second disk member (240), and the first air duct (230) communicates with the first air inlet (241).

3. The cleaning device according to claim 2, characterized in that The blower structure further includes a stator impeller (300); The stator impeller (300) includes a plurality of second blades (310). The housing (100) encloses to form a diversion channel. The stator impeller (300) is installed in the diversion channel, and the second blades (310) are located on the outer periphery of the first blades (220).

4. The cleaning device according to claim 3, characterized in that, The stator impeller (300) further includes a support seat (320) coaxially arranged with the impeller (200); The plurality of second blades (310) are arranged on the outer peripheral surface of the support seat (320) and are spaced circumferentially along the support seat (320); The plurality of second blades (310) are located on the side of the first disk member (210) away from the second disk member (240), and at least part of the orthographic projection of the plurality of second blades (310) on the impeller (200) is located outside the impeller (200).

5. The cleaning device according to claim 4, characterized in that The central angles of at least some adjacent second blades (310) are inconsistent; and / or, the axis angles of at least some adjacent two second blades (310) with respect to the axis of the support seat (320) are inconsistent.

6. The cleaning device according to claim 4 or 5, characterized in that, The axial heights of at least some adjacent two second blades (310) on the support seat (320) are inconsistent.

7. The cleaning device according to claim 4, wherein, There is an axis angle between the connection line of the front end and the rear end of the second blade (310) and the axis of the support seat (320), and the axis angle is not zero.

8. The cleaning device according to claim 7, characterized in that, The second blade (310) is configured as an airfoil sweep structure.

9. The cleaning device according to claim 1, characterized in that The housing (100) includes an upper housing (110) having an inlet (111) and a lower housing (120) having an outlet (121); The upper housing (110) and the lower housing (120) enclose to form a diversion channel, the 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 device according to claim 1, wherein, The first disc member (210) and the plurality of first blades (220) are of an integral structure.

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

12. A cleaning device having a blower structure, characterized in that, The fan structure at least includes a housing (100) and an impeller (200) installed in the housing (100), wherein The impeller (200) includes a first disc member (210) and a plurality of first blades (220), the plurality of first blades (220) are arranged on the first disc member (210) along the circumferential direction of the first disc member (210), and a first air duct (230) is formed between two adjacent first blades (220); Along the air flow direction in the first air duct (230), a notch (221) is provided at the air outlet end of the first blade (220), and the heights of the notches (221) of at least some adjacent two first blades (220) are different.

13. The cleaning device according to claim 12, characterized in that, The heights of the notches of at least part of the plurality of first blades (220) are arranged in sequence in the circumferential direction.

14. A moving impeller, characterized in that, The impeller (200) includes a first disc member (210), a second disc member (240) and a plurality of first blades (220); The first disc member (210) and the second disc member (240) are coaxially arranged and spaced apart, the plurality of first blades (220) are arranged on the first disc member (210) and the second disc member (240) along the circumferential direction of the first disc member (210), and a first air duct (230) is formed between two adjacent first blades (220); A first air inlet (241) is provided on the second disc member (240), and the first air duct (230) is communicated with the first air inlet (241); Along the air flow direction in the first air duct (230), a notch (221) is provided at the air outlet end of the first blade (220), and the shapes and / or sizes of the notches (221) of at least two adjacent first blades (220) are different.

15. A blower structure, characterized in that, The fan structure at least includes a housing (100) and an impeller (200) installed in the housing (100), wherein The impeller (200) includes a first disc member (210) and a plurality of first blades (220), the plurality of first blades (220) are arranged on the first disc member (210) along the circumferential direction of the first disc member (210), and a first air duct (230) is formed between two adjacent first blades (220); Along the air flow direction in the first air duct (230), a notch (221) is provided at the air outlet end of the first blade (220), and the shapes and / or sizes of the notches (221) of at least some adjacent two first blades (220) are different.

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