A sealing and shock-absorbing device and a bladeless fan

Abstract

The present invention discloses a sealing and damping device and a bladeless fan. The sealing and damping device is provided with an air flow generating mechanism for generating a high-speed air flow; a flow dividing mechanism for dispersing and dredging the high-speed air flow; and a filtering mechanism for keeping the air entering the bladeless fan clean. The sealing and damping device in this case improves the internal sealing of the whole machine by arranging annular sealing components on the outer side and the inner side between the air flow generating mechanism and the flow dividing mechanism, reduces the efficiency loss; prevents the vibration from being conducted, reduces the noise of the whole machine and improves the user experience.

Description

Technical Field

[0001] The present invention relates to the field of bladeless fans, and particularly to a sealing and shock-absorbing device and a bladeless fan. Background Art

[0002] For bladeless fans, air volume and air speed are important indicators for measuring product quality, and the sealing performance between the impeller assembly and the parts connected to its guide vanes is an important performance that affects the overall efficiency of the machine and related product indexes.

[0003] In view of this, it is necessary to develop a sealing and shock-absorbing device and a bladeless fan to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies existing in the prior art, the object of the present invention is to provide a sealing and shock-absorbing device, which includes: an air flow generating mechanism for generating a high-speed air flow; a flow dividing mechanism for dispersing and dredging the high-speed air flow; and a filtering mechanism for keeping the air entering the bladeless fan clean. By providing an annular sealing component on the outside and inside between the air flow generating mechanism and the flow dividing mechanism, the internal sealing performance of the whole machine is improved, the efficiency loss is reduced; the vibration conduction is prevented, the noise of the whole machine is reduced, and the user experience is improved.

[0005] To achieve the above objects and other advantages according to the present invention, there is provided a sealing and shock-absorbing device, including:

[0006] An air flow generating mechanism for generating a high-speed air flow;

[0007] A flow dividing mechanism for dispersing and dredging the high-speed air flow;

[0008] A sealing component, which is annular; and

[0009] A filtering mechanism, which is hollow inside and forms an accommodating space;

[0010] Wherein, the filtering mechanism wraps the air flow generating mechanism, the air flow generating mechanism, the flow dividing mechanism and the sealing component are coaxially arranged, and the sealing component is arranged between the air flow generating mechanism and the flow dividing mechanism.

[0011] Preferably, the air flow generating mechanism includes:

[0012] A power chamber, which is provided with an impeller driver therein;

[0013] A drainage pipe, which is hollow inside and both the upper and lower ends are open to form an upper opening and a lower opening respectively;

[0014] An impeller, which is coaxially arranged below the power chamber;

[0015] Wherein, the power chamber and the impeller are arranged in the diversion pipe to form an annular diversion cavity, and the impeller is in transmission connection with the power output end of the impeller driver.

[0016] Preferably, at least two first guide vanes are arranged in the annular diversion cavity.

[0017] Preferably, the separation and diversion mechanism includes:

[0018] A first bending member with a hollow interior;

[0019] A second bending member with a concave interior and coaxially arranged on the first bending member;

[0020] Wherein, at least two U-shaped notches are respectively arranged at intervals on the upper sides of the side walls of the first bending member and the second bending member to form at least two diversion openings;

[0021] The U-shaped notches of the first bending member correspond to the positions of the U-shaped notches of the bending member of the second bending member.

[0022] Preferably, a peripheral skirt portion extends downward from the lower side of the outer periphery of the first bending member;

[0023] Wherein, a clearance is formed between the peripheral skirt portion and the lower edge of the first bending member to form a clamping groove, and clamping slots arranged in a circumferential array are spaced on the outer side of the peripheral skirt portion.

[0024] Preferably, mesh holes arranged in an array are provided on the upper part of the side wall of the second bending member;

[0025] Through holes are spaced on the bottom surface of the second bending member, and a buffer assembly is arranged in the through holes;

[0026] A groove is provided at the bottom edge of the second bending member.

[0027] Preferably, second guide vanes are arranged at intervals between the first bending member and the second bending member;

[0028] The second guide vanes are integrally formed with the first bending member and the second bending member.

[0029] Preferably, the sealing assembly includes:

[0030] A first sealing ring, the upper end surface of which is recessed inward to form a first clamping groove, and a claw structure extends upward and inward along the center at the lower end of the inner ring of the first sealing ring;

[0031] Protrusions arranged in a circumferential array are provided on the upper part of the outer side of the first sealing ring;

[0032] Wherein, the protrusion matches the card slot on the peripheral skirt portion.

[0033] Preferably, the sealing assembly includes:

[0034] A second sealing ring, the upper part of which is adapted to the groove of the second bending member, at least two support feet are provided at the lower part of the second sealing ring, and the support feet are connected to the upper end surface of the air flow generating mechanism.

[0035] Preferably, the sealing assembly includes:

[0036] A shock-absorbing ring, which is arranged at the lower outer side of the drainage pipe;

[0037] Wherein, at least three shock-absorbing claws are provided on the inner ring thereof, and an inverted hook is provided directly below each shock-absorbing claw, and a spring is provided at least partially on the outer periphery of the inverted hook.

[0038] Preferably, the shock-absorbing claw is provided with two upper and lower claw heads, and triangular anti-slip protrusions are provided on the claw heads;

[0039] At least two card strips are provided on the surface of the shock-absorbing claw facing the shock-absorbing ring.

[0040] Preferably, the sealing assembly includes:

[0041] A connecting ring, the lower end surface of which is recessed inward to form a connecting groove;

[0042] The lower end surface of the inner circle of the connecting ring extends downward and inward along the center to form a connecting skirt portion.

[0043] Preferably, at least three convex platforms are provided at intervals on the inner wall of the filtering assembly;

[0044] Wherein, the shock-absorbing ring is mounted on the convex platform.

[0045] Preferably, at the upper end of the filtering assembly, a part of the diameter is smaller than the diameter of the main body of the filtering assembly, forming a circular plug-in.

[0046] Wherein, the circular plug-in is adapted to the connecting groove.

[0047] Furthermore, the present case also discloses a bladeless fan, which includes the sealing and shock-absorbing device according to any one of the foregoing items.

[0048] Compared with the prior art, the beneficial effects of the present invention are as follows: by providing an air flow generating mechanism for generating a high-speed air flow; a flow splitting mechanism for dispersing and dredging the high-speed air flow; and a filtering mechanism for keeping the air entering the bladeless fan clean, and by providing an annular sealing assembly on the outer and inner sides between the air flow generating mechanism and the flow splitting mechanism to improve the internal sealing of the whole machine, reduce efficiency loss; prevent vibration conduction, reduce the noise of the whole machine and improve the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 A cross-sectional view of a bladeless fan according to an embodiment of the present invention;

[0050] Figure 2 A front cross-sectional view of the air flow generating mechanism of the sealing and damping device according to an embodiment of the present invention;

[0051] Figure 3 A front view of the flow splitting mechanism of the sealing and damping device according to an embodiment of the present invention;

[0052] Figure 4 A front cross-sectional view of the flow splitting mechanism of the sealing and damping device according to an embodiment of the present invention;

[0053] Figure 5 A top view of the flow splitting mechanism of the sealing and damping device according to an embodiment of the present invention;

[0054] Figure 6 A top view of the first sealing ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0055] Figure 7 A front view of the first sealing ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0056] Figure 8 A front cross-sectional view of the first sealing ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0057] Figure 9 A front cross-sectional view of the second sealing ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0058] Figure 10 A top view of the damping ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0059] Figure 11 A perspective view of the damping ring of the sealing assembly of the sealing and damping device according to an embodiment of the present invention;

[0060] Figure 12 Front cross-sectional view of the shock-absorbing ring of the sealing assembly of the sealing and shock-absorbing device according to an embodiment of the present invention;

[0061] Figure 13 Stereogram of the shock-absorbing claw of the shock-absorbing ring of the sealing assembly of the sealing and shock-absorbing device according to an embodiment of the present invention;

[0062] Figure 14 Stereogram of the shock-absorbing claw of the shock-absorbing ring of the sealing assembly of the sealing and shock-absorbing device according to an embodiment of the present invention;

[0063] Figure 15 Front cross-sectional view of the connecting ring of the sealing assembly of the sealing and shock-absorbing device according to an embodiment of the present invention;

[0064] Figure 16 Front cross-sectional view of the filtering mechanism of the sealing and shock-absorbing device according to an embodiment of the present invention; Detailed implementation manners

[0065] The following further describes the present invention in detail with reference to the drawings. The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent, so that those skilled in the art can implement it according to the description in the specification.

[0066] In the drawings, for clarity, the shapes and dimensions may be enlarged, and the same reference numerals will be used throughout the figures to indicate the same or similar components.

[0067] In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are defined with respect to the structures shown in the respective drawings. In particular, "height" corresponds to the dimension from the top to the bottom, "width" corresponds to the dimension from the left to the right, and "depth" corresponds to the dimension from the front to the back. They are relative concepts and may therefore change accordingly depending on their different positions and different usage states. Therefore, these or other orientations should not be construed as restrictive terms.

[0068] Terms related to attachment, connection, etc. (e.g., "connect" and "attach") refer to the relationship in which these structures are directly or indirectly fixed or attached to each other through an intermediate structure, as well as a movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0069] According to an embodiment of the present invention in combination with Figure 1 and Figure 2 as shown, it can be seen that the sealing and shock-absorbing device includes:

[0070] An air flow generating mechanism 10, which is used to generate a high-speed air flow;

[0071] A flow dividing mechanism 20, which disperses and dredges the high-speed air flow;

[0072] A sealing assembly 30 in an annular shape; and

[0073] A filter mechanism 40, which keeps the air entering the bladeless fan clean;

[0074] The filtering mechanism 40 wraps the airflow generating mechanism 10 , the airflow generating mechanism 10 , the diverting mechanism 20 and the sealing assembly 30 are coaxially arranged, and the sealing assembly 30 is arranged between the airflow generating mechanism 10 and the diverting mechanism 20 .

[0075] The airflow generating mechanism 10 comprises:

[0076] A power chamber 110, in which an impeller driver 111 is disposed;

[0077] The drainage tube 120 is hollow inside and open at both ends to form an upper opening and a lower opening respectively;

[0078] An impeller 130 , which is coaxially disposed below the power chamber 110 ;

[0079] Among them, the power chamber 110 and the impeller 130 are arranged in the drainage tube 120 to form an annular drainage chamber 121, and the impeller 130 is transmission connected to the power output end of the impeller driver 111, so that the impeller 130 can rotate around the axis of the drainage tube 120 under the drive of the impeller driver 111.

[0080] The impeller 130 is disposed downstream of the air flow in the drainage pipe 120 .

[0081] A fixing component for fixing and installing the power chamber 110 is fixedly connected between the power chamber 110 and the drainage pipe 120 . The fixing component is arranged upstream of the airflow in the drainage pipe 120 .

[0082] The fixing component is at least two first guide vanes 122 fixedly connected between the power chamber 110 and the guide pipe 120 . In a specific embodiment, the impeller 130 is located at the lower opening of the guide pipe 120 , and the first guide vanes 122 are located at the upper opening of the guide pipe 120 .

[0083] The first guide vane 122 can correct the flow direction of the air flow deflected after being driven by the impeller 130. The deflection direction of the impeller 130 causes the air flow to flow upward in a clockwise or counterclockwise spiral. The deflection direction of the first guide vane 122 is opposite to that of the impeller 130. The air flow rotating clockwise or counterclockwise is guided by the first guide vane 122 in the opposite deflection direction, so that the corrected air flow direction is consistent with the axis direction of the drain pipe 120, improving the smoothness of the air flow and reducing the generation of noise.

[0084] The flow splitting mechanism 20 includes:

[0085] A first bending member 210 with a hollow interior;

[0086] A second bending member 220 with a concave interior and coaxially arranged on the first bending member 210;

[0087] Wherein, at least two U-shaped notches are respectively arranged at intervals on the upper ends of the side walls of the first bending member 210 and the second bending member 220 to form at least two flow splitting ports;

[0088] The U-shaped notches of the first bending member 210 correspond to the U-shaped notches of the bending member of the second bending member 220. The first bending member 210 and the second bending member 220 are oppositely arranged to form a flow splitting channel. The air flow in the bladeless fan body enters the flow splitting mechanism 20 from the inner side of the body through the impeller driver 111. The first bending member 210 extends into and closely adheres to the inner housing of the flow splitting channel 225, and the second bending member 220 extends into and closely adheres to the outer housing of the flow splitting channel 225, enabling the air flow to smoothly enter the flow splitting channel 225, avoiding the formation of noise when the air flow quickly enters the narrow nozzle, and improving the user experience.

[0089] The lower side of the outer periphery of the first bending member 210 extends downward to form an outer skirt portion 211;

[0090] Wherein, a clearance is provided between the outer skirt portion 211 and the lower edge of the first bending member 210 to form a clamping groove 212, and clamping slots 2111 arranged in a circumferential array are spaced on the outer side of the outer skirt portion 211.

[0091] The upper part of the side wall of the second bending member 220 is provided with mesh holes arranged in an array;

[0092] At least four buffer components 223 are spaced on the central bottom surface of the second bending member 220. The buffer component 223 includes a buffer through hole 2231 and a buffer rod 2232;

[0093] Among them, the buffer through-hole 2231 is integrally formed with the diverter 10.

[0094] The upper part of the buffer rod 2232 is in the shape of an inverted hook, which can prevent the diverter mechanism 20 from slipping off the air flow generating mechanism 10 due to vibration during operation.

[0095] The lower part of the buffer rod 2232 is at least partially a spring, which further reduces the vibration of the diverter mechanism 20 and increases its service life.

[0096] A groove 221 is provided at the bottom edge of the bottom surface of the second bending member 220.

[0097] Second guide vanes 222 are provided at intervals between the first bending member 210 and the second bending member 220.

[0098] The second guide vanes 222 are integrally formed with the first bending member 210 and the second bending member 220, which is convenient for users to disassemble; the deflection direction of the second guide vanes 222 is opposite to that of the first guide vanes 122, so that the air flow deflects again, reducing the energy of the air flow and the wind stiffness, making the wind blown out by the bladeless fan mild. Since there are mesh holes on the side wall of the first bending member 210, after the air flow enters the diversion channel, part of the air flow will flow out of the diversion channel through the mesh holes, dispersing the air flow and further reducing the exhaust intensity, making the wind mild. This improves the user experience.

[0099] In a specific embodiment, the arrangement of the U-shaped notches can be that at least two U-shaped notches are arranged side by side with intervals on the second member 20, or they can be arranged in a circular array around the central axis of the second member 20; among them, the number of the first bending member 110 of the first member 10 and the number of the second bending member 220 of the second member 20 are consistent with the number of the set U-shaped notches.

[0100] The sealing assembly 30 includes:

[0101] A first sealing ring 310, the upper end surface of which is recessed inward to form a first clamping groove 311. The first clamping groove 311 is adapted to the peripheral skirt 211 of the diverter mechanism 20 to strengthen the stability between the air flow generating mechanism 10 and the diverter mechanism 20. The lower end of the inner circle of the first sealing ring 310 extends upward and inward along the center to form a claw structure 312. The cross-sectional area of the claw of the claw structure 312 gradually decreases along its extending direction, so that the claw structure 312 fits better with the air flow generating mechanism 10, ensuring the tightness between the air flow generating mechanism 10 and the diverter mechanism 20 and reducing the generation of noise.

[0102] On the upper outer side of the first sealing ring 310, there are protrusions 313 arranged in a circumferential array.

[0103] Among them, the protrusions 313 are matched with the card slots 2111 on the peripheral skirt 211, making the connection between the air flow generating mechanism 10 and the flow dividing mechanism 20 tighter, and increasing the sealing performance between the two.

[0104] In the specific implementation, the positions of the card slots 2111 and the protrusions 313 can be interchanged or used crosswise.

[0105] The sealing assembly 30 includes:

[0106] A second sealing ring 320, the upper part of which is adapted to the groove 221 of the second bending member 220. At least two support feet 321 are provided at the lower part of the second sealing ring 320. The support feet 321 are connected to the upper end surface of the air flow generating mechanism 10. The upper part of the second sealing ring 320 can ensure its tight connection with the flow dividing mechanism 20. Due to the up and down vibration of the flow dividing mechanism 20 caused by the vibration conduction of the air flow generating mechanism 10, and due to the arrangement of the support feet 321 at the lower part of the second sealing ring 320, the support feet 321 will deform due to the vibration, playing a certain role in alleviating the vibration and improving the service life of the flow dividing mechanism 20.

[0107] The first sealing ring 310 and the second sealing ring 320 prevent the flow dividing mechanism 20 and the air flow generating mechanism 10 from directly contacting. The first sealing ring 310 and the second sealing ring 320 block the vibration conduction of the air flow generating mechanism 10, enabling the flow dividing mechanism 20 to remain stable. The first sealing ring 310 and the second sealing ring 320 are preferably made of rubber.

[0108] The sealing assembly 30 includes:

[0109] A shock-absorbing ring 330, which is arranged at the lower outer side of the drainage pipe 120.

[0110] Among them, at least three shock-absorbing claws 331 are provided on its inner ring. A barb 332 is provided directly below each shock-absorbing claw 331. At least part of the outer circumference of the barb 332 is provided with a spring 3321. At least three ribbed parts with holes 333 are provided on the upper end surface of the inner ring.

[0111] The shock-absorbing jaw 331 is provided with two upper and lower jaw heads 3311, and triangular anti-slip protrusions 3312 are arranged on the jaw heads 3311. The triangular anti-slip protrusions 3312 are in close contact with the outer wall of the drainage tube 120 to reduce the vibration of the air flow generating mechanism 10.

[0112] On the surface of the shock-absorbing jaw 331 facing the shock-absorbing ring 330, at least two card strips 3313 are provided. Above the card strips 3313, a through hole 3314 is provided, and the through hole 3314 is hinged to the rib portion 333 with holes. When the shock-absorbing jaw 331 approaches the shock-absorbing ring 330, the card strips 3313 are subjected to the extrusion of the shock-absorbing ring 330, and the roots of the card strips 3313 rotate downward until the roots of the card strips 3313 extend into the shock-absorbing ring 330 and are clamped tightly.

[0113] The sealing assembly 30 includes:

[0114] A connecting ring 340, the lower end surface of which is recessed inward to form a connecting groove 341;

[0115] The lower end surface of the inner circle of the connecting ring 340 extends downward and inward along the center to form a connecting skirt portion 342.

[0116] At least three bosses 410 are arranged at intervals on the inner wall of the filter assembly 40;

[0117] Among them, the shock-absorbing ring 330 is mounted on the bosses 410.

[0118] At the upper end of the filter assembly 40, a part of the diameter is smaller than the diameter of the main body of the filter assembly 40 to form a circular plug-in 420.

[0119] Among them, the circular plug-in 420 is adapted to the connecting groove 341, and the connecting skirt portion 342 is connected to the air flow generating mechanism 10 to ensure the stability of the air flow generating mechanism 10 in the accommodation space.

[0120] The number of devices and the processing scale described here are used to simplify the description of the present invention. The application, modification and variation of the present invention are obvious to those skilled in the art.

[0121] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. A sealing and shock-absorbing device, characterized in that, it includes: an air flow generating mechanism (10) for generating a high-speed air flow; a flow splitting mechanism (20) for dispersing and dredging the high-speed air flow; a sealing component (30) in a ring shape; and a filtering mechanism (40) with a hollow interior to form a receiving space; wherein, the filtering mechanism (40) wraps the air flow generating mechanism (10), the air flow generating mechanism (10), the flow splitting mechanism (20) and the sealing component (30) are coaxially arranged, and the sealing component (30) is arranged between the air flow generating mechanism (10) and the flow splitting mechanism (20); the flow splitting mechanism (20) includes: a first bending member (210) with a hollow interior; a second bending member (220) with a concave interior and coaxially arranged on the first bending member (210); a peripheral skirt portion (211) extends downward from the lower side of the outer periphery of the first bending member (210); the upper part of the side wall of the second bending member (220) is provided with mesh holes arranged in an array; through holes (223) are arranged at intervals on the bottom surface of the second bending member (220), and a buffer component (224) is arranged in the through holes (223); a groove (221) is arranged at the bottom edge of the second bending member (220).

2. The sealing and shock-absorbing device according to claim 1, characterized in that, the air flow generating mechanism (10) includes: a power chamber (110) provided with an impeller driver (111) therein; a drainage pipe (120) with a hollow interior and both upper and lower ends open to form an upper opening and a lower opening respectively; an impeller (130) coaxially arranged below the power chamber (110); wherein, the power chamber (110) and the impeller (130) are arranged in the drainage pipe (120) to form an annular drainage cavity (121), and the impeller (130) is in transmission connection with the power output end of the impeller driver (111).

3. The sealing and shock-absorbing device according to claim 2, characterized in that, at least two first guide vanes (122) are arranged in the annular drainage cavity (121).

4. The sealing and shock-absorbing device according to claim 1, characterized in that, at least two U-shaped notches are arranged at intervals on the upper ends of the side walls of the first bending member (210) and the second bending member (220) to form at least two flow splitting ports; the U-shaped notches of the first bending member (210) correspond to the positions of the U-shaped notches of the second bending member (220).

5. The sealing and shock-absorbing device according to claim 4, characterized in that, a gap is formed between the peripheral skirt portion (211) and the lower edge of the first bending member (210) to form a clamping groove (212), and clamping slots (2111) arranged in a circumferential array are spaced on the outer side of the peripheral skirt portion (211).

6. The sealing and shock-absorbing device according to claim 4, characterized in that, second guide vanes (222) are arranged at intervals between the first bending member (210) and the second bending member (220); The second guide vane (222) is integrally formed with the first bending member (210) and the second bending member (220).

7. The sealing and shock-absorbing device according to claim 5, wherein, the sealing assembly (30) includes: a first sealing ring (310), the upper end surface of which is recessed inward to form a first clamping groove (311), and the lower end of the inner ring of the first sealing ring (310) extends upward and inward along the center to form a clamping claw structure (312); the upper part of the outer side of the first sealing ring (310) is provided with protrusions (313) arranged in a circumferential array; wherein, the protrusions (313) are matched with the clamping grooves (2111) on the peripheral skirt (211).

8. The sealing and shock-absorbing device according to claim 1, wherein, the sealing assembly (30) includes: a second sealing ring (320), the upper part of which is adapted to the groove (221) of the second bending member (220), and at least two support feet (321) are provided at the lower part of the second sealing ring (320), and the support feet (321) are connected to the upper end surface of the air flow generating mechanism (10).

9. The sealing and shock-absorbing device according to claim 2, wherein, the sealing assembly (30) includes: a shock-absorbing ring (330), which is arranged at the lower outer side of the diversion pipe (120); wherein, at least three shock-absorbing clamping claws (331) are provided on the inner circle thereof, and a barb (332) is provided directly below each shock-absorbing clamping claw (331), and a spring (3321) is provided at least partially on the outer periphery of the barb (332).

10. The sealing and shock-absorbing device according to claim 9, wherein, the shock-absorbing clamping claw (331) is provided with two upper and lower claw heads (3311), and triangular anti-slip protrusions (3312) are provided on the claw heads (3311); the surface of the shock-absorbing clamping claw (331) facing the shock-absorbing ring (330) is provided with at least two clamping strips (3313).

11. The sealing and shock-absorbing device according to claim 9, wherein, the sealing assembly (30) further includes: a connecting ring (340), the lower end surface of which is recessed inward to form a connecting groove (341); the lower end surface of the inner circle of the connecting ring (340) extends downward and inward along the center to form a connecting skirt (342).

12. For the sealing and shock-absorbing device according to claim 9, at least three bosses (410) are provided at intervals on the inner wall of the filtering mechanism (40); wherein, the shock-absorbing ring (330) is mounted on the bosses (410).

13. The sealing and shock-absorbing device according to claim 11, wherein, at the upper end of the filtering mechanism (40), a part of the diameter is smaller than the diameter of the main body of the filtering mechanism (40) to form a circular plug-in (420); wherein, the circular plug-in (420) is adapted to the connecting groove (341).

14. A bladeless fan, wherein, it includes the sealing and shock-absorbing device according to any one of claims 1 to 13.

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