Bladeless fan

Abstract

The invention relates to a bladeless fan which comprises an air blowing component provided with an air outlet. The air guide part is arranged in the air blowing component; the adjusting assembly is used for driving the air guide part to move, so that the air guide part can move relative to the air outlet; and a plurality of air guide fan blades are distributed on the air guide part in the extending direction of the air guide part, the air guide fan blades can abut against the air outlet, so that a plurality of air chambers are formed at the air outlet, and the air guide fan blades are separated from the air outlet under the driving of the adjusting assembly. The invention further provides another bladeless fan. And two states of a guide vane structure and a non-guide vane structure at the air outlet position can be conveniently realized, and different air outlet modes are provided for users.

Description

[0001] This application is a divisional application. The filing date of the original application is December 31, 2020, the application number is 202011633461.4, and the invention title is a bladeless fan.

Technical Field

[0002] The present invention relates to the field of household fans, and specifically relates to a bladeless fan.

Background Art

[0003] Currently, in common bladeless fans, the guide vane structure is fixed at the air outlet position. Although the guide vane structure can refine the air flow, making the air flow discharged from the air outlet more stable and the air flow blown by the bladeless fan more comfortable, however, when the air flow generated inside the bladeless fan passes through the guide vane structure, the contact between the air flow and the guide vane structure inevitably causes air flow loss, reducing the wind speed at the air outlet. At the same time, when the high-speed air flow passes through the guide vane structure, due to the influence of air molecule viscous friction, the generated noise increases. The existing bladeless fans have a single air outlet mode and are difficult to meet the different needs of users. There is an urgent need for a bladeless fan with a switchable mode to meet the switching between two modes of having a guide vane structure and no guide vane structure.

[0004] Therefore, it is necessary to improve the existing technology to overcome the defects in the existing technology.

Summary of the Invention

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a bladeless fan, which realizes two states of having a guide vane structure and no guide vane structure at the air outlet position through switching, so as to provide users with different air outlet modes.

[0006] The technical solution of the present invention is outlined as follows:

[0007] The present invention provides a bladeless fan, including:

[0008] A blowing member, on which an air outlet is provided;

[0009] A wind guiding part, which is arranged inside the blowing member; and

[0010] An adjusting component for driving the wind guiding part to move, so that the wind guiding part can move relative to the air outlet;

[0011] Wherein, a plurality of guide fan blades are arranged along the extending direction of the wind guiding part, and the guide fan blades can abut against the air outlet to form a plurality of air chambers at the air outlet; under the drive of the adjusting component, the guide fan blades are separated from the air outlet.

[0012] Preferably, a fixed connecting plate is built in the blowing member, the fixed connecting plate is fixed at a position close to the air outlet, and the air guiding part moves relative to the fixed connecting plate.

[0013] Preferably, the adjusting assembly includes a linear actuator; the adjusting assembly drives the air guiding part to reciprocate along the air outlet direction.

[0014] Preferably, a connecting rod is installed between the power output end of the linear actuator and the air guiding part, the power output end of the linear actuator moves perpendicular to the air outlet direction, and the air guiding part is driven by the connecting rod and is limited in the movement direction by the fixed connecting plate at the same time, so that the air guiding part moves along the air outlet direction.

[0015] Preferably, a wedge block is installed on the connecting rod, a guiding block protruding outward is arranged on the air guiding part, and the guiding block slides along the inclined surface of the wedge block, so that the air guiding part moves along the air outlet direction.

[0016] Preferably, an elastic member is arranged between the air guiding part and the fixed connecting plate, and the elastic member is used to apply a force to the air guiding part so that the guiding block is pressed against the wedge block.

[0017] In view of the deficiencies of the prior art, the present invention also relates to another bladeless fan, including:

[0018] A blowing member, on which at least two air outlets are arranged; and

[0019] An air outlet system is arranged at the air inlet of one end of the blowing member, and is used to form an air flow in the blowing member;

[0020] Wherein, a guiding fan blade is arranged at one of the air outlets, and the air outlet is divided into several air chambers by the guiding fan blade. A wind blocking block and an adjusting assembly for driving the wind blocking block are built in the blowing member. The wind blocking block is used to block part of the air outlet; the wind blocking block is driven to move by the adjusting assembly, so that the air flow is switched to be pressed out from different air outlets.

[0021] Preferably, the blowing member includes a housing and a base body, and a through hollow part is arranged on the base body;

[0022] The housing covers the outside of the base body, and a ring-shaped first air outlet is formed between the housing and the hollow part. A second air outlet is opened on the inner wall of the hollow part of the base body.

[0023] Preferably, the adjusting assembly includes a linear actuator, and the linear actuator drives the wind blocking block to reciprocate along the air outlet direction of the first air outlet.

[0024] Preferably, the adjusting component is installed at the other end of the blowing component away from the air inlet;

[0025] A fixed connecting plate is also installed in the blowing component. The fixed connecting plate is used to limit the moving direction of the wind blocking block, and the adjusting component drives the wind blocking block to move under the limitation of the fixed connecting plate.

[0026] Preferably, a housing is covered on the fixed connecting plate, so that a movement channel for the wind blocking block is formed between the fixed connecting plate and the housing;

[0027] An air outlet relief opening is formed on the housing, and the air outlet relief opening corresponds to the second air outlet, so that air flow is discharged from the second air outlet through the air outlet relief opening.

[0028] Preferably, a connecting rod is installed between the power output end of the linear driver and the wind blocking block. The power output end of the linear driver moves along a direction perpendicular to the air outlet direction of the first air outlet, and the connecting rod drives the wind blocking block to move while being limited in the moving direction by the fixed connecting plate, so that the wind blocking block moves along the air outlet direction of the first air outlet.

[0029] Preferably, a limiting hole is formed in the connecting rod, and the extending direction of the limiting hole is inclined to the air outlet direction of the first air outlet. A guiding column is arranged on the wind blocking block; the guiding column extends into the limiting hole;

[0030] When the linear driver drives the connecting rod to move along a direction perpendicular to the first air outlet, the wind blocking block moves along the air outlet direction of the first air outlet.

[0031] Preferably, the base body is annular, the outer shell is covered on the base body, and the outer shell includes a first shell body and a second shell body; the first shell body and the second shell body are connected to form a cylindrical main body structure of the outer shell body.

[0032] Preferably, a wind guiding part is further connected to the power transmission end of the adjusting component. Under the drive of the adjusting component, the wind blocking block and the wind guiding part move relative to each other.

[0033] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0034] A bladeless fan provided by the present invention drives the wind guiding part away from the air outlet through the adjusting module, switches the bladeless fan to another mode, so that the air flow directly discharges from the air outlet, avoiding the reduction of wind speed and reducing noise at the same time. Another bladeless fan utilizes two air outlets on the bladeless fan to realize different air outlet modes. The adjusting module drives the wind blocking block, and blocks any air outlet through the wind blocking block, and presses the air flow out from the other outlet, so as to facilitate the switching of the air outlet mode.

[0035] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings.

Brief Description of the Drawings

[0036] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0037] Figure 1 Schematic diagram of the general overall structure of the bladeless fan of the present invention;

[0038] Figure 2 Schematic diagram of the general overall structure of the air blowing component in the bladeless fan of the present invention;

[0039] Figure 3 It is a partial structural schematic diagram of the inner blowing component of the bladeless fan of the present invention;

[0040] Figure 4 for Figure 3 A partial enlarged schematic diagram;

[0041] Figure 5 Schematic diagram of the exploded structure of the air blowing component in the bladeless fan of the present invention;

[0042] Figure 6 A partial cross-sectional view of the inner blowing component of the bladeless fan of the present invention;

[0043] Figure 7 Schematic diagram of the airflow in the front air outlet mode of the air blowing component of the bladeless fan of the present invention;

[0044] Figure 8 Schematic diagram of the airflow in the rear air outlet mode of the air blowing component in the bladeless fan of the present invention.

[0045] Description of reference numerals:

[0046] 100 - Air outlet system; 200 - Blowing component; 210 - Outer housing; 211 - First housing; 212 - Second housing; 220 - Substrate; 221 - Air inlet; 222 - Ring-shaped extension; 223 - Hollow part; 224 - Connecting column; 230 - First air outlet; 240 - Second air outlet; 250 - Adjustment component; 251 - Driving part; 252 - Link; 2521 - Limiting hole; 2522 - Wedge block; 261 - Cover; 2611 - Air outlet relief opening; 2612 - Guide groove; 262 - Air guiding part; 2621 - Guide block; 2622 - Air guiding fan blade; 263 - Wind blocking block; 2631 - Guide post; 264 - Fixed connection plate; 2641 - Limiting block.

Detailed implementation manners

[0047] 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, enabling those skilled in the art to implement it according to the description in the specification. In the drawings, for clarity, the shapes and dimensions may be enlarged, and the same reference numerals will be used throughout all the figures to indicate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc. are based on the orientation or positional relationship shown in the 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. These relative terms are for convenience of description and generally do not intend to require a specific orientation. 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, and a movable or rigid attachment or relationship, unless otherwise explicitly stated.

[0048] Next, with reference to the drawings and the specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, the following described embodiments or technical features can be arbitrarily combined to form new embodiments. It should be understood that the terms such as "having", "including", and "comprising" used herein do not exclude the existence or addition of one or more other elements or their combinations.

[0049] As Figure 1 and 2 shown, a bladeless fan provided by the present invention includes: an air outlet system 100 and a blowing component 200. Among them, the blowing component 200 includes an outer housing 210 and a substrate 220. A through hollow part 223 is provided on the substrate 220, so that the substrate 220 has an annular structure;

[0050] The outer housing 210 covers the base body 220; specifically, the outer housing 210 includes a first housing 211 and a second housing 212, and the first housing 211 and the second housing 212 are connected to form the cylindrical main structure of the outer housing 210; the outer housing 210 and the base body 220 are connected to form the main structure of the blowing member 200, and a cavity for air flow is formed between the outer housing 210 and the base body 220. An opening formed at one end where the outer housing 210 and the base body 220 are connected is used as the air inlet 221. The air outlet system 100 is connected to one end of the air inlet 210 of the blowing member 200. An air outlet is provided on the blowing member 200, so that the air flow generated by the air outlet system 100 enters the cavity formed between the outer housing 210 and the base body 220 through the air inlet 210 and is discharged from the air outlet.

[0051] The air outlet system 100 is internally provided with a fan. The air outlet is provided on the side wall of the blowing member 200, so that the direction of the air flow generated by the fan is perpendicular or approximately perpendicular to the direction of the discharged air flow. Since the fan is arranged inside the bladeless fan, it is safer to use.

[0052] Furthermore, a ring-shaped first air outlet 230 is formed between the outer housing 210 and the hollow portion 223, and the air flow is discharged from the first air outlet 230. Specifically, the base body 220 is provided with an outwardly protruding ring-shaped extension portion 222 along the outer side of the hollow portion 223. A notch is provided on the outer housing 210 corresponding to the hollow portion 223, so that the outer housing 210 and the base body 220 are matched. The ring-shaped extension portion 222 and the notch are in clearance fit to form the first air outlet 230, so that the air flow can be discharged from the gap between the ring-shaped extension portion 222 and the notch.

[0053] In the existing bladeless fan, a guide vane structure is provided at the air outlet position. The air flow is processed through the guide vane structure, so that the air flow blown out from the air outlet is smoother and softer. Unlike traditional fans that use blades to cut air to push the air flow, there will be a sharp wind impact when blowing on the human body, which is not smooth and comfortable. However, when the air flow of the current bladeless fan passes through the guide vane structure and is blown out from the air outlet, due to the fact that the air flow is inevitably lossy under the guidance of the guide vane structure, the wind speed is reduced, and at the same time, the noise increases. At present, the guide vane structure is fixedly connected to the air outlet position, making its air outlet mode single and difficult to meet different needs.

[0054] In the first specific embodiment:

[0055] The bladeless fan further includes a wind guiding part 262 and an adjusting component 250 for driving the wind guiding part 262 to move. The adjusting component 250 includes a driving part 251 for driving the wind guiding part 262 to move. The wind guiding part 262 is arranged in the blowing component 200. Driven by the adjusting component 250, the wind guiding part 262 can move relative to the first air outlet 230. Through the movable wind guiding part 262, the bladeless fan can switch the air outlet mode. Relative to the first air outlet mode in which the air flow is guided by the wind guiding part 262 and the second air outlet mode in which there is no wind guiding part 262 to guide the air flow, the second air outlet mode reduces the loss of the air flow and increases the wind speed compared with the first air outlet mode. When the same wind speed is generated in the two air outlet modes, the second air outlet mode consumes less electric energy. At the same time, the second air outlet mode produces less noise than the first air outlet mode, enabling the user to switch between the two modes according to their own needs, thus being more user-friendly.

[0056] Specifically, a plurality of wind guiding fan blades 2622 are arranged along the extending direction of the wind guiding part 262. The wind guiding fan blades 2622 can abut against the air outlet so as to form a plurality of air chambers at the air outlet. Driven by the adjusting component 250, the wind guiding fan blades 2622 are disconnected from the air outlet.

[0057] Further, a fixed connecting plate 264 is built in the blowing component 200. The fixed connecting plate 264 is fixed at a position close to the air outlet. The wind guiding part 262 moves relative to the fixed connecting plate 264. By cushioning the wind guiding part 262 with the fixed connecting plate 264, the wind guiding part 262 corresponds to the first air outlet 230.

[0058] In Specific Embodiment 2:

[0059] A solution further formed on the basis of Specific Embodiment 1;

[0060] The adjusting component 250 drives the wind guiding part 262 to make the wind guiding fan blades 2622 perform a reciprocating linear motion along the air outlet direction. Among them, preferably, the adjusting component 250 includes a linear driver. It should be noted that in this specific embodiment, the technical solution of using a linear driver is only a specific implementation solution, and the adjusting component 250 can also select other common drivers to realize the linear motion of the wind guiding part 262.

[0061] The blowing component 200 also internally has a housing 261. The fixed connecting plate 264 and the housing 261 are connected to form a channel for the movement of the wind guiding part 262;

[0062] A guiding groove 2612 extending along the air outlet direction is formed on the housing 261, the guiding fan blade 2622 correspondingly passes through the guiding groove 2612, and the guiding part 262 of the adjusting assembly 250 is driven to move in a direction defined by the guiding groove 2612.

[0063] Further, the adjusting assembly 250 is installed at the other end of the blowing member 200 away from the air inlet 221. A connecting rod 252 is installed between the power output end of the linear actuator and the guiding part 262. The power output end of the linear actuator moves perpendicular to the air outlet direction, and the guiding part 262 is driven by the connecting rod 252 to be limited in the moving direction by the fixed connecting plate 264 at the same time, so that the guiding part 262 moves along the air outlet direction.

[0064] In the specific embodiment three:

[0065] Another solution further formed on the basis of the specific embodiment two;

[0066] A wedge block 2522 is installed on the connecting rod 252, a guiding block 2621 protruding outward is provided on the guiding part 262, and the guiding block 2621 slides along the inclined surface of the wedge block 2522, so that the guiding part 262 moves along the air outlet direction.

[0067] An elastic member is arranged between the guiding part 262 and the fixed connecting plate 264, and the elastic member is used to apply a force to the guiding part 262 so that the guiding block 2621 is pressed against the wedge block 2522.

[0068] The guiding part 262 is driven by the connecting rod 252, so as to adjust the power output direction of the linear actuator, make the direction of the linear actuator driving the connecting rod 252 perpendicular to the moving direction of the guiding part 262, thereby reasonably utilizing the space inside the bladeless fan and making the structure of the whole device more compact.

[0069] In the specific embodiment four:

[0070] Another solution further formed on the basis of the specific embodiment one;

[0071] The adjusting assembly 250 drives the guiding part 262 to rotate. A relief opening is provided at the position corresponding to the guiding fan blade 2622 on the fixed connecting plate 264. Driven by the adjusting assembly 250, the guiding part 262 rotates so that the guiding fan blade 2622 extends into the relief opening until the guiding fan blade 2622 is flush with the surface of the fixed connecting plate 264, and the guiding fan blade 2622 retracts into the fixed connecting plate 264 to switch the air outlet mode.

[0072] In the fifth specific embodiment:

[0073] The bladeless fan includes at least two air outlets; a wind blocking block 263 and an adjustment assembly 250 for driving the wind blocking block 263 are built in the blowing member 200. By driving the wind blocking block 263 through the adjustment assembly 250 to block a part of the air outlets, the air outlets blocked by the wind blocking block 263 are opened, so that the air flow switches the flow direction and is pressed out from the opened air outlets at the back.

[0074] Specifically, the bladeless fan includes two air outlets, and a second air outlet 240 is formed on the inner wall of the hollow part 223 of the base body 220.

[0075] Wherein, a guide fan blade 2622 is arranged at one of the air outlets. The guide fan blade 2622 divides the air outlet into several air chambers. Driven by the adjustment assembly 250, the wind blocking block 263 moves to block any one of the air outlets, so that the air flow is pressed out from the other air outlet.

[0076] The adjustment assembly 250 includes a linear driver, and the linear driver drives the wind blocking block 263 to reciprocate along the air outlet direction of the first air outlet 230.

[0077] The adjustment assembly 250 is installed at the other end of the blowing member 200 away from the air inlet 221.

[0078] A fixed connection plate 264 is further installed in the blowing member 200. The fixed connection plate 264 is used to limit the moving direction of the wind blocking block 263, and the adjustment assembly 250 drives the wind blocking block 263 to move under the limitation of the fixed connection plate 264.

[0079] A housing 261 is covered on the fixed connection plate 264, so that a movement channel for the wind blocking block 263 is formed between the fixed connection plate 264 and the housing 261.

[0080] An air outlet relief opening 2611 is formed on the housing 261. The air outlet relief opening 2611 corresponds to the second air outlet 240, so that the air flow is discharged from the second air outlet 240 through the air outlet relief opening 2611.

[0081] A connecting rod 252 is installed between the power output end of the linear driver and the wind blocking block 263. The power output end of the linear driver moves along a direction perpendicular to the air outlet direction of the first air outlet 230. Driven by the connecting rod 252, the wind blocking block 263 is simultaneously limited in the moving direction by the fixed connection plate 264, so that the wind blocking block 263 moves along the air outlet direction of the first air outlet 230.

[0082] Both ends of the connecting rod 252 are hinged to the power output end of the linear actuator and the wind deflector 263.

[0083] A limiting hole 2521 is formed in the connecting rod 252, and the extending direction of the limiting hole 2521 is inclined to the air outlet direction of the first air outlet 230. A guiding post 2631 is arranged on the wind deflector 263; the guiding post 2631 extends into the limiting hole 2521;

[0084] When the linear actuator drives the connecting rod 252 to move in a direction perpendicular to the first air outlet 230, the wind deflector 263 moves along the air outlet direction of the first air outlet 230.

[0085] In Specific Embodiment Six:

[0086] Based on Specific Embodiment Three and Specific Embodiment Five, a preferred solution is formed;

[0087] Driven by the adjusting assembly 250, the wind deflector 263 and the air guiding part 262 move relative to each other. The adjusting assembly 250 internally has a driving part 251. The power output end of the driving part 251 is connected with a connecting rod 252. A limiting hole 2521 connected to the wind deflector 263 is formed in the connecting rod 252. Specifically, a guiding post 2631 is arranged on the wind deflector 263, and the guiding post 2631 extends into the limiting hole 2521;

[0088] The wind deflector 263 is further provided with a guiding hole extending along the air outlet direction of the first air outlet 230. The fixed connecting plate 264 is provided with a limiting block 2641 extending into the guiding hole. Through the guiding hole and the limiting hole 2521, when the connecting rod 252 moves, the wind deflector 263 is driven to move;

[0089] Meanwhile, a wedge block 2522 is arranged on the side of the connecting rod 252, and the wedge block 2522 is in contact with a guiding block 2621 arranged on the air guiding part 262. When the connecting rod 252 moves, the air guiding part 262 is driven to move. Thus, when the connecting rod 252 moves, the wind deflector 263 and the air guiding part 262 are driven simultaneously, and the wind deflector 263 and the air guiding part 262 move towards each other;

[0090] Specifically, the fixed connecting plate 264, the wind deflector 263, the air guiding part 262 and the housing 261 are stacked in sequence from bottom to top. Meanwhile, the air guiding part 262 and the connecting rod 252 are arranged on the same plane of the wind deflector 263;

[0091] The wind blocking block 263 and the air guiding part 262 are driven by the adjusting component 250 to switch the air outlet mode, so that the bladeless fan meets different air outlet requirements, making it more user-friendly and improving the user experience.

[0092] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and for the relevant parts, reference can be made to the partial description of the method embodiment.

Claims

1. A bladeless fan, characterized in that, Comprising: A blowing member (200) provided with at least two air outlets thereon; And An air outlet system (100) is provided at the air inlet (221) at one end of the blowing member (200) for forming an air flow within the blowing member (200); Wherein, a guiding fan blade (2622) is arranged at one of the air outlets, and the air outlet is divided into several air chambers by the guiding fan blade (2622). A wind blocking block (263) and an adjusting assembly (250) for driving the wind blocking block (263) are arranged inside the blowing member (200). The wind blocking part is used for blocking part of the air outlet; the adjusting assembly (250) drives the wind blocking block (263) to move, so that the air flow is switched to be pressed out from different air outlets.

2. The bladeless fan according to claim 1, characterized in that, The blowing member (200) includes an outer casing (210) and a base body (220), and a through hollow part (223) is arranged on the base body (220); The outer casing (210) covers the outside of the base body (220), and an annular first air outlet (230) is formed between the outer casing (210) and the hollow part (223). A second air outlet (240) is formed on the inner wall of the hollow part (223) of the base body (220).

3. The bladeless fan according to claim 2, wherein, The adjusting assembly (250) includes a linear driver, and the linear driver drives the wind blocking block (263) to reciprocate along the air outlet direction of the first air outlet (230).

4. The bladeless fan according to claim 3, wherein The adjusting assembly (250) is installed on the other end of the blowing member (200) far from the air inlet (221); A fixed connecting plate (264) is also installed inside the blowing member (200). The fixed connecting plate (264) is used for restricting the moving direction of the wind blocking block (263), and the adjusting assembly (250) drives the wind blocking block (263) to move under the limitation of the fixed connecting plate (264).

5. The bladeless fan according to claim 4, wherein A housing (261) is covered on the fixed connecting plate (264), so that a movement channel for the wind blocking block (263) is formed between the fixed connecting plate (264) and the housing (261); An air outlet relief opening (2611) is formed on the housing (261), and the air outlet relief opening (2611) corresponds to the second air outlet (240), so that the air flow is discharged from the second air outlet (240) through the air outlet relief opening (2611).

6. The bladeless fan according to claim 5, characterized in that, A connecting rod (252) is installed between the power output end of the linear driver and the wind blocking block (263). The power output end of the linear driver moves along a direction perpendicular to the air outlet direction of the first air outlet (230), and the connecting rod (252) drives the wind blocking block (263) to be simultaneously limited in the moving direction by the fixed connecting plate (264), so that the wind blocking block (263) moves along the air outlet direction of the first air outlet (230).

7. The bladeless fan according to claim 6, wherein, A limiting hole (2521) is formed in the connecting rod (252), and the extending direction of the limiting hole (2521) is inclined to the air outlet direction of the first air outlet (230). A guiding post (2631) is arranged on the wind blocking block (263); the guiding post (2631) extends into the limiting hole (2521). When the linear actuator drives the connecting rod (252) to move in a direction perpendicular to the first air outlet (230), the wind blocking block (263) moves along the air outlet direction of the first air outlet (230).

8. The bladeless fan according to claim 2, characterized in that, The base body (220) is annular, and the outer shell body (210) covers the base body (220). The outer shell (210) includes a first shell body (211) and a second shell body (212); the first shell body (211) and the second shell body (212) are connected to form the main structure of the cylindrical outer shell body (210).

9. The bladeless fan according to any one of claims 1-8, characterized in that, A wind guiding part (262) is further connected to the power transmission end of the adjusting assembly (250). Under the drive of the adjusting assembly (250), the wind blocking block (263) and the wind guiding part (262) move relative to each other.

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