Dust collection fan structure and cleaning base station

Abstract

The invention relates to a dust collection fan structure and a cleaning base station. The dust collection fan structure comprises a shell part, a fan and a resonator. The shell part is provided with a containing cavity and an air duct, the containing cavity is provided with an inlet and an outlet which are communicated with each other, the air duct is communicated with the outlet, and noise reduction holes are formed in the inner wall of the air duct; the fan is contained in the containing cavity and used for leading airflow into the containing cavity from the inlet and leading the airflow out of the air outlet of the air duct. The resonator is connected to the shell part, and a sound inlet in the resonator is communicated with the noise reduction hole so as to reduce noise. The resonator is arranged, the sound inlet in the resonator communicates with the noise reduction hole, and the sound inlet communicates with the air channel, so that noise, matched with the inherent frequency of the resonator, in the air channel can be eliminated or weakened, the noise is reduced, and the user experience feeling is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a dust collecting fan structure and a cleaning base station. Background Art

[0002] Sweeping robots have become an essential tool for modern household cleaning, and dust collection is one of their core functions. After completing the sweeping task or when the dust box is full, the sweeping robot will enter the base station to collect dust, and use the dust collection fan to generate negative pressure to suck the garbage from the dust box into a larger dust bag. However, due to the high power and strong suction of the dust collection fan, the noise generated is also relatively large, which seriously affects the user experience. Summary of the invention

[0003] Based on this, it is necessary to provide a dust collecting fan structure to address the technical problem that the dust collecting fan has high power and strong suction, but generates correspondingly large noise, which seriously affects the user experience.

[0004] A dust collecting fan structure, comprising:

[0005] The housing is structured with a receiving cavity and an air duct, wherein the receiving cavity has an inlet and an outlet that are connected to each other, the air duct is connected to the outlet, and a noise reduction hole is provided on the inner wall of the air duct;

[0006] a fan, contained in the containing chamber, and used to introduce airflow from the inlet into the containing chamber and to guide airflow out through an air outlet of the air duct; and

[0007] The resonator is connected to the shell member, and the sound inlet on the resonator is communicated with the noise reduction hole to perform noise reduction.

[0008] In the above-mentioned dust collecting fan structure, the fan rotates to introduce the air flow from the inlet into the containing chamber, and guides it out through the air outlet of the air duct, thereby generating negative pressure to suck the garbage from the dust box into a dust bag with a larger capacity. Among them, a resonator is set, and the sound inlet on the resonator is connected with the noise reduction hole, so that the sound inlet is connected with the air duct, so that the noise in the air duct that matches the natural frequency of the resonator can be eliminated or weakened, thereby reducing noise and improving user experience.

[0009] In some embodiments, the resonator has a resonance cavity and a neck cavity which are interconnected, and the sound inlet is located on a side of the neck cavity away from the resonance cavity.

[0010] In some embodiments, the dust collecting fan structure also includes a first noise reduction component, which is accommodated in the air duct and connected to the inner wall of the air duct, and at least a portion of the first noise reduction component is located on the side opposite to the outlet of the accommodating cavity, and the first noise reduction component is used to absorb noise.

[0011] In some embodiments, the first noise reduction member includes a first noise reduction section and a second noise reduction section connected to each other, the first noise reduction section is located on a side opposite to the outlet, and the second noise reduction section is located on a side away from the outlet.

[0012] In some embodiments, the first noise reduction component includes a first noise reduction cotton, and the first noise reduction cotton is connected to the inner wall of the air duct.

[0013] In some embodiments, the first noise reduction component further includes a matching plate, which is connected to a side of the first noise reduction cotton away from the inner wall of the air duct, and has a plurality of sound-absorbing holes arranged at intervals.

[0014] In some embodiments, the diameter of the sound absorbing hole is 1 mm-4 mm; and / or the axial dimension of the sound absorbing hole is 5 mm-14 mm.

[0015] In some embodiments, the dust collecting fan structure also includes a first partition, which is connected to the shell and arranged between the accommodating cavity and the air duct, and has a plurality of first through holes arranged at intervals, and the first through holes are configured as the outlet.

[0016] In some embodiments, the aperture of the first through hole is 1 mm-6 mm; and / or the axial dimension of the first through hole is 2 mm-12 mm.

[0017] In some embodiments, the dust collecting fan structure also includes a second partition plate, which is accommodated in the air duct and connected to the inner wall of the air duct to divide the air duct into two hole sections, and the second partition plate has a plurality of second through holes arranged at intervals, and the two hole sections are connected through the second through holes.

[0018] In some embodiments, the dust collecting fan structure also includes a third partition, which is connected to the shell and is arranged at one end of the air duct away from the outlet, and the third partition has a plurality of third through holes arranged at intervals, and the third through holes are configured as the air outlet.

[0019] In some embodiments, the dust collecting fan structure further includes a second noise reduction cotton, which is accommodated in the air duct and connected to a side of the third partition close to the fan.

[0020] The present invention also provides a cleaning base station, which can solve at least one of the above technical problems.

[0021] A cleaning base station comprises the above-mentioned dust collecting fan structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a dust collecting fan structure in some embodiments of the present invention;

[0023] FIG2 is a cross-sectional schematic diagram of a dust collecting fan structure in some embodiments of the present invention;

[0024] FIG3 is a second cross-sectional schematic diagram of the dust collecting fan structure in some embodiments of the present invention;

[0025] FIG4 is a schematic diagram of the structure of a resonator in a dust collecting fan structure in some embodiments of the present invention;

[0026] 5 is a cross-sectional schematic diagram of a resonator in a dust collecting fan structure in some embodiments of the present invention;

[0027] FIG. 6 is a schematic diagram of the structure of a matching plate in a dust collecting fan structure in some embodiments of the present invention.

[0028] Figure Number:

[0029] 100, shell member; 110, accommodating cavity; 111, inlet; 112, outlet; 113, first shell; 114, second shell; 115, casing; 120, air duct; 121, noise reduction hole; 122, air outlet; 123, first hole section; 124, second hole section; 200, fan; 300, resonator; 310, resonance cavity; 320, neck cavity; 340, sound inlet; 350, plate; 351, box; 352, cover plate; 353 , lock; 360, neck tube; 400, first noise reduction component; 410, first noise reduction section; 420, second noise reduction section; 430, first noise reduction cotton; 440, matching plate; 441, sound-absorbing hole; 442, first plate section; 443, second plate section; 444, transition plate section; 510, first partition; 511, first through hole; 520, second partition; 521, second through hole; 530, third partition; 531, third through hole; 540, second noise reduction cotton. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0036] Referring to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is a schematic diagram of the structure of the dust collecting fan structure in some embodiments of the present invention; Fig. 2 is a schematic diagram of the cross section of the dust collecting fan structure in some embodiments of the present invention; Fig. 3 is a schematic diagram of the cross section of the dust collecting fan structure in some embodiments of the present invention. A dust collecting fan structure provided in one embodiment of the present invention includes a housing 100, a fan 200 and a resonator 300; the housing 100 is configured with a housing chamber 110 and an air duct 120, the housing chamber 110 has an inlet 111 and an outlet 112 that are connected to each other, the air duct 120 is connected to the outlet 112, and a noise reduction hole 121 is provided on the inner wall of the air duct 120; the fan 200 is accommodated in the housing chamber 110, and the fan 200 is used to introduce the airflow from the inlet 111 into the housing chamber 110, and to lead it out through the air outlet 122 of the air duct 120; the resonator 300 is connected to the housing 100, and the sound inlet 340 on the resonator 300 is connected to the noise reduction hole 121 for noise reduction.

[0037] Specifically, in the present application, the accommodating chamber 110 is connected to the air duct 120, and the fan 200 is accommodated in the accommodating chamber 110. When the fan 200 rotates, the airflow can be introduced into the accommodating chamber 110 from the inlet 111, and is led out through the air outlet 122 of the air duct 120, thereby generating negative pressure to suck the garbage from the dust box into a dust bag with a larger capacity. Among them, by providing a resonator 300, and making the sound inlet 340 on the resonator 300 connected to the noise reduction hole 121, so that the sound inlet 340 is connected to the air duct 120, it is possible to eliminate or weaken the noise in the air duct 120 that matches the natural frequency of the resonator 300, thereby reducing the noise and improving the user experience.

[0038] Furthermore, the housing 100 includes a first housing 113 , a second housing 114 and a casing 115 . The second housing 114 is connected to the first housing 113 to enclose an air duct 120 . The casing 115 is connected to the second housing 114 . An accommodating chamber 110 is formed inside the casing 115 .

[0039] 1 , 2 and 3 , in some embodiments, the resonator 300 has a resonance cavity 310 and a neck cavity 320 that are connected to each other, and the sound inlet 340 is located on a side of the neck cavity 320 away from the resonance cavity 310 .

[0040] Specifically, the neck cavity 320 has an air column of a certain mass, and the airflow flowing into the air duct 120 will pass through the noise reduction hole 121. When the sound wave passes through the sound inlet 340, it will act on the air column in the neck cavity 320. The air column will move back and forth like a piston under the action of the sound wave. Due to the inertia of the mass, the air column will resist the change of the movement speed. The resonance cavity 310 of a certain volume can be inflated and deflated like an air spring. The friction and damping during the vibration of the air column convert part of the sound energy into heat energy, thereby achieving silencing. Among them, the resonator 300 in this embodiment is a Helmholtz resonator.

[0041] When the frequency of the external sound wave is the same as the natural frequency of the resonance cavity 310, the system resonates. The natural frequency of the resonance cavity 310 can be expressed by the formula Calculate, where S is the cross-sectional area of ​​the neck cavity 320, V is the volume of the resonance cavity 310, The length of the neck cavity 320, C is the speed of sound. It can be seen that the resonance frequency is proportional to the cross-sectional area of ​​the neck cavity 320, and inversely proportional to the length of the neck cavity 320 and the volume of the resonance cavity 310. By adjusting the cross-sectional area of ​​the neck cavity 320, the length of the neck cavity 320 or the volume of the resonance cavity 310, the natural frequency of the resonator 300 can be adjusted. When the natural frequency of the resonator 300 matches the noise frequency of the airflow in the air duct 120, the noise close to this frequency can be eliminated or weakened, thereby achieving noise reduction.

[0042] Furthermore, in the axial direction of the neck cavity 320, the inner contour dimension of the resonance cavity 310 is larger than the inner contour dimension of the neck cavity 320, thereby reducing the height of the resonator 300 while ensuring that the volume of the resonance cavity 310 remains unchanged, thereby reducing the size of the dust collecting fan structure for miniaturization.

[0043] Referring to Figures 3, 4 and 5, Figure 3 is a second cross-sectional schematic diagram of the dust collecting fan structure in some embodiments of the present invention; Figure 4 is a structural schematic diagram of the resonator in the dust collecting fan structure in some embodiments of the present invention; and Figure 5 is a cross-sectional schematic diagram of the resonator in the dust collecting fan structure in some embodiments of the present invention. In some of the embodiments, the resonator 300 includes a plate body 350 and a neck tube 360 ​​connected to the plate body 350, the neck cavity 320 is disposed in the neck tube 360, and the resonance cavity 310 is disposed in the plate body 350. In the axial direction of the neck cavity 320, the outer contour size of the neck tube 360 ​​is smaller than the outer contour size of the plate body 350, thereby reducing the weight of the resonator 300 and realizing the lightweight structure of the dust collecting fan.

[0044] Furthermore, the plate 350 includes a box 351, a cover 352 and a lock 353. One side of the cover 352 is connected to the neck tube 360, and the other side of the cover 352 is connected to the box 351 through the lock 353 to enclose a resonance cavity 310. By replacing different boxes 351, the volume of the resonance cavity 310 can be changed to adapt to different resonance frequencies. In the present application, multiple resonators 300 can be provided so that they can resonate with multiple noise frequencies at the same time, thereby achieving the purpose of absorbing multiple noises at the same time.

[0045] Referring to Figure 2, in some embodiments, the dust collecting fan structure also includes a first noise reduction component 400, which is accommodated in the air duct 120 and connected to the inner wall of the air duct 120, and at least a portion of the first noise reduction component 400 is located on the side opposite to the outlet 112 of the accommodating cavity 110, and the first noise reduction component 400 is used to absorb noise.

[0046] Specifically, the outlet 112 is arranged opposite to at least a portion of the first noise reduction member 400 , so that the airflow flowing out through the outlet 112 will hit the first noise reduction member 400 , thereby facilitating the first noise reduction member 400 to absorb noise and reduce the noise of the airflow in the air duct 120 .

[0047] Furthermore, in the axial direction of the air duct 120, the accommodating chamber 110 is staggered with the air duct 120, that is, the housing 115 is arranged on the side of the air duct 120, and is convex relative to the second housing 114 to the side away from the first housing 113, so as to accommodate the fan 200. Among them, the noise reduction hole 121 is located on the second housing 114, the resonator 300 is connected to the second housing 114, and the protruding direction of the resonator 300 relative to the second housing 114 is the same as the protruding direction of the housing 115 relative to the second housing 114, thereby reducing the size of the dust collecting fan structure.

[0048] 2 and 3 , in some embodiments, the first noise reduction member 400 includes a first noise reduction section 410 and a second noise reduction section 420-420 connected to each other. The first noise reduction section 410 is located on a side opposite to the outlet 112 , and the second noise reduction section 420-420 is located on a side away from the outlet 122 .

[0049] Specifically, the first noise reduction section 410 extends along the axial direction of the air duct 120, and the extension direction of the second section is at an angle to the extension direction of the first noise reduction section 410, and is located on the side away from the air outlet 122. The airflow flowing out through the outlet 112 will collide with the first noise reduction section 410 and the second noise reduction section 420420, and the airflow after the collision will flow toward the side of the air outlet 122. The arrangement that the first noise reduction section 410 and the second noise reduction section 420420 can collide with the airflow increases the degree of noise absorption by the first noise reduction member 400 and improves the noise reduction effect.

[0050] Furthermore, one end of the second noise reduction section 420420 away from the first noise reduction section 410 is connected to the housing 115, so that most of the airflow flowing out through the outlet 112 collides with the first noise reduction section 410 and the second noise reduction section 420420, thereby improving the noise reduction effect.

[0051] 2 and 3 , in some embodiments, the first noise reduction member 400 includes a first noise reduction cotton 430 , and the first noise reduction cotton 430 is connected to the inner wall of the air duct 120 , thereby absorbing and attenuating noise.

[0052] 2 and 3 , in some embodiments, the first noise reduction component 400 further includes a matching plate 440 , which is connected to a side of the first noise reduction cotton 430 away from the inner wall of the air duct 120 , and has a plurality of spaced sound absorbing holes 441 on the matching plate 440 .

[0053] Specifically, the matching plate 440 can fix the first noise reduction cotton 430, and absorb sound waves through a plurality of spaced-apart sound-absorbing holes 441 on the matching plate 440, converting sound energy into heat energy, thereby reducing the reflected and transmitted sound wave energy and improving the noise reduction effect.

[0054] Referring to FIG. 2 and FIG. 3 , in some embodiments, the diameter of the sound absorbing hole 441 is 1 mm to 4 mm, and the axial dimension of the sound absorbing hole 441 is 5 mm to 14 mm. By reasonably setting the diameter and axial dimension of the sound absorbing hole 441, the sound absorbing hole 441 has a stronger ability to absorb sound waves, thereby reducing the energy of reflected and transmitted sound waves and improving the noise reduction effect.

[0055] Refer to Figures 2, 3 and 6, Figure 6 is a schematic diagram of the structure of the matching plate in the dust collecting fan structure in some embodiments of the present invention. In some embodiments, the matching plate 440 includes a first plate section 442, a second plate section 443 and a transition plate section 444, the transition plate section 444 corresponds to the first noise reduction section 410, and the second plate section 443 corresponds to the second noise reduction section 420420, the two ends of the transition plate section 444 are respectively connected to the first plate section 442 and the second plate section 443, and the transition plate section 444 is arc-shaped to guide the airflow to flow toward the outlet 122 side.

[0056] Referring to Figures 2 and 3, in some embodiments, the dust collecting fan structure also includes a first partition plate 510, which is connected to the shell body 100 and is arranged between the accommodating cavity 110 and the air duct 120, and the first partition plate 510 has a plurality of first through holes 511 arranged at intervals, and the first through holes 511 are configured as outlets 112.

[0057] Specifically, when the airflow generated by the fan 200 flows into the air duct 120 through the plurality of first through holes 511 disposed at intervals on the first partition plate 510, the turbulence and eddy current of the airflow in the air duct can be reduced, thereby reducing the airflow noise. Preferably, the first through holes 511 on the first partition plate 510 are disposed at even intervals.

[0058] Furthermore, the aperture of the first through hole 511 is 1 mm-6 mm, and the axial dimension of the first through hole 511 is 2 mm-12 mm. It should be noted that if the diameter of the first through hole 511 is too small and the spacing is too large, the ventilation effect will be affected. If the diameter of the first through hole 511 is too large and the spacing is too small, the effect of evenly distributing the airflow in the air duct 120 will not be good, so it is necessary to select a suitable size.

[0059] Referring to Figures 2 and 3, in some embodiments, the dust collecting fan structure also includes a second partition plate 520, which is accommodated in the air duct 120 and connected to the inner wall of the air duct 120 to separate the air duct 120 into two hole sections, and the second partition plate 520 has a plurality of second through holes 521 arranged at intervals, and the two hole sections are connected through the second through holes 521.

[0060] Specifically, for the convenience of description, the hole segment is divided into a first hole segment 123 and a second hole segment 124. The first hole segment 123 is connected to the outlet 112, and the air outlet 122 is located on the second hole segment 124. When the airflow in the first hole segment 123 flows into the second hole segment 124 through the plurality of second through holes 521 arranged at intervals on the second partition plate 520, the turbulence and eddy current of the airflow in the second hole segment 124 can be reduced, thereby reducing the airflow noise. Among them, the second through hole 521 has the same size as the first through hole 511. Preferably, the second through holes 521 on the second partition plate 520 are evenly spaced.

[0061] Further, the first hole section 123 and the second hole section 124 extend in the same direction, the first noise reduction section 410 and the second noise reduction section 420420 are arranged on the inner wall of the first hole section 123, and the second noise reduction section 420420 is arranged opposite to the air outlet 122. Among them, the number of the second baffles 520 can be one or more. When the number of the second baffles 520 is two or more than two, each second baffle 520 is arranged at intervals along the axial direction of the air duct 120. It should be noted that the first noise reduction member 400 can also be arranged in other areas of the inner wall of the air duct 120.

[0062] In addition, the noise reduction hole 121 is arranged in the second hole section 124. Since the second hole section 124 is close to the air outlet 122, the noise in the second hole section 124 that matches the natural frequency of the resonator 300 is eliminated or weakened by the resonator 300, thereby reducing the noise of the airflow flowing out through the air outlet 122 and improving the noise reduction effect. In other embodiments, the first hole section 123 may also be provided with a resonator 300.

[0063] Referring to Figures 2 and 3, in some embodiments, the dust collecting fan structure also includes a third partition plate 530, which is connected to the shell body 100 and is arranged at one end of the air duct 120 away from the outlet 112, and the third partition plate 530 has a plurality of third through holes 531 arranged at intervals, and the third through holes 531 are configured as air outlets 122.

[0064] Specifically, when the airflow in the second hole section 124 flows out through the plurality of third through holes 531 disposed at intervals on the third partition plate 530, the turbulence and eddy current of the outflowing airflow can be reduced, thereby reducing the airflow noise. The third through holes 531 have the same size as the first through holes 511. Preferably, the second through holes 521 on the third partition plate 530 are evenly spaced.

[0065] 2 and 3 , in some embodiments, the dust collecting fan structure further includes a second noise reduction cotton 540 , which is accommodated in the air duct 120 and connected to a side of the third partition plate 530 close to the fan 200 .

[0066] Specifically, the airflow flowing out through the second hole section 124 will collide with the third partition plate 530 and generate noise when flowing out through the third through hole 531. The second noise reduction cotton 540 can absorb part of the noise and avoid direct collision between the airflow and the third partition plate 530, thereby improving the noise reduction effect.

[0067] The embodiment of the present invention also provides a cleaning base station, including the above-mentioned dust collecting fan structure, by setting a resonator 300, and making the sound inlet 340 on the resonator 300 communicate with the noise reduction hole 121, so that the sound inlet 340 is connected with the air duct 120, so that the vibration and noise reduction of the airflow in the air duct 120 can be achieved, thereby reducing noise and improving user experience. That is, the cleaning base station of the embodiment of the present application, because it adopts the dust collecting fan structure in the above-mentioned embodiment, it has the same technical effect as the dust collecting fan structure in the above-mentioned embodiment, and will not be described in detail here.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A dust collecting fan structure, characterized in that: The dust collecting fan structure comprises: The housing is structured with a receiving cavity and an air duct, wherein the receiving cavity has an inlet and an outlet that are connected to each other, the air duct is connected to the outlet, and a noise reduction hole is provided on the inner wall of the air duct; a fan, contained in the containing chamber, and used to introduce airflow from the inlet into the containing chamber and to guide airflow out through an air outlet of the air duct; and The resonator is connected to the shell member, and the sound inlet on the resonator is communicated with the noise reduction hole to perform noise reduction.

2. The dust collecting fan structure according to claim 1, characterized in that: The resonator comprises a resonance cavity and a neck cavity which are connected to each other, and the sound inlet is located at a side of the neck cavity away from the resonance cavity.

3. The dust collecting fan structure according to claim 1, characterized in that: The dust collecting fan structure also includes a first noise reduction component, which is accommodated in the air duct and connected to the inner wall of the air duct, and at least a portion of the first noise reduction component is located on the side opposite to the outlet of the accommodating cavity, and the first noise reduction component is used to absorb noise.

4. The dust collecting fan structure according to claim 3, characterized in that: The first noise reduction member includes a first noise reduction section and a second noise reduction section connected to each other, the first noise reduction section is located on a side opposite to the outlet, and the second noise reduction section is located on a side away from the outlet.

5. The dust collecting fan structure according to claim 3, characterized in that: The first noise reduction component includes a first noise reduction cotton, and the first noise reduction cotton is connected to the inner wall of the air duct.

6. The dust collecting fan structure according to claim 5, characterized in that: The first noise reduction component also includes a matching plate, which is connected to a side of the first noise reduction cotton away from the inner wall of the air duct, and has a plurality of sound-absorbing holes arranged at intervals.

7. The dust collecting fan structure according to claim 6, characterized in that: The diameter of the sound absorbing hole is 1mm-4mm; and / or the axial dimension of the sound absorbing hole is 5mm-14mm.

8. The dust collecting fan structure according to any one of claims 1 to 7, characterized in that: The dust collecting fan structure also includes a first partition plate, which is connected to the shell member and is arranged between the accommodating cavity and the air duct. The first partition plate has a plurality of first through holes arranged at intervals, and the first through holes are configured as the outlets.

9. The dust collecting fan structure according to claim 8, characterized in that: The aperture of the first through hole is 1 mm-6 mm; and / or the axial dimension of the first through hole is 2 mm-12 mm.

10. The dust collecting fan structure according to any one of claims 1 to 7, characterized in that: The dust collecting fan structure also includes a second partition plate, which is accommodated in the air duct and connected to the inner wall of the air duct to divide the air duct into two hole sections. The second partition plate has a plurality of second through holes arranged at intervals, and the two hole sections are connected through the second through holes.

11. The dust collecting fan structure according to any one of claims 1 to 7, characterized in that: The dust collecting fan structure also includes a third partition plate, which is connected to the shell and is arranged at an end of the air duct away from the outlet. The third partition plate has a plurality of third through holes arranged at intervals, and the third through holes are configured as the air outlet.

12. The dust collecting fan structure according to claim 11, characterized in that: The dust collecting fan structure also includes a second noise reduction cotton, which is accommodated in the air duct and connected to a side of the third partition close to the fan.

13. A cleaning base station, characterized in that: It comprises the dust collecting fan structure as described in any one of claims 1-12.

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