Bladeless fan

Abstract

According to the bladeless fan, the first air outlet pipeline is provided with the first air outlet, the first air outlet pipeline is communicated with the inner air channel of the main machine assembly, and the first air outlet pipeline is driven by the first driving mechanism to rotate, so that air in the first air outlet pipeline can be exhausted to different angles through the first air outlet. The first driving mechanism independently drives the first air outlet pipeline to rotate so as to independently control the air in the first air outlet pipeline to be exhausted at different angles through the first air outlet. The air outlet angle of the first air outlet can be independently controlled so that air can be exhausted to different angle positions through the first air outlet, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a bladeless fan. Background Art

[0002] For traditional bladeless fans, the blower in the host component sends high-speed air volume into the air outlet pipe, and the air is sent out through the narrow air outlet on the air outlet pipe. However, due to the small air outlet, the air outlet area is limited, affecting the air outlet experience.

[0003] The Chinese utility model patent with the publication number CN210509659U discloses an air outlet column structure of a bladeless fan, which includes an air outlet pipe and a wind guiding member, and a wind guiding surface is formed on the wind guiding member; the air flow in the air outlet pipe is guided by the wind guiding surface of the wind guiding member and sprayed outwards from the air outlet of the air outlet pipe. The air outlet column is designed as a double-row air cavity structure, that is, two completely separate air outlets, which increases the air supply angle, but the air supply angle still cannot be adjusted. Summary of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide a bladeless fan to solve the problem that the small air outlet angle affects the user experience.

[0005] The embodiment of the utility model adopts the following technical scheme: A bladeless fan, comprising:

[0006] A host component having an inner air duct, and a fan assembly for sucking air into the inner air duct is arranged in the inner air duct;

[0007] A first air outlet pipe having a first air outlet, the lower end of the first air outlet pipe is connected to the host component through a first driving mechanism, and the first air outlet pipe is communicated with the inner air duct so that the air in the inner air duct can enter the first air outlet pipe; the first air outlet pipe rotates under the driving action of the first driving mechanism so that the air in the first air outlet pipe can be discharged from the first air outlet at different angles.

[0008] The first air outlet pipe is driven to rotate independently by the first driving mechanism to independently control the air in the first air outlet pipe to be discharged from the first air outlet at different angles; the air outlet angle of the first air outlet can be independently controlled to discharge air to different angular positions through the first air outlet, improving the user experience.

[0009] In some embodiments, the bladeless fan further includes a second air outlet duct having a second air outlet. The lower end of the second air outlet duct communicates with the upper end of the first air outlet duct so that the air in the first air outlet duct can enter the second air outlet duct. The upper end of the second air outlet duct is connected to a second driving mechanism and rotates under the driving action of the second driving mechanism so that the air in the second air outlet duct can be discharged at different angles through the second air outlet.

[0010] The first air outlet duct is driven to rotate independently by the first driving mechanism to independently control the air in the first air outlet duct to be discharged at different angles through the first air outlet. The second air outlet duct is driven to rotate independently by the second driving mechanism to independently control the air in the second air outlet duct to be discharged at different angles through the second air outlet. The air outlet angles of the first air outlet and the second air outlet can be separately and independently controlled, and the two are cyclically and alternately switched in air outlet angles to increase the residence time of the air discharged through the first air outlet and the second air outlet during the rotation of the first air outlet duct and the second air outlet duct, enhance the wind feeling, and improve the user experience.

[0011] In some embodiments, both ends of the first air outlet duct have openings, the lower end of the second air outlet duct has an opening, and the upper end of the second air outlet duct is blocked.

[0012] Both the first air outlet duct and the second air outlet duct are cylindrical. The first air outlet is a long strip opening arranged along the axial direction of the first air outlet duct, and the first air outlet penetrates through the side wall of the first air outlet duct. The second air outlet is a long strip opening arranged along the axial direction of the second air outlet duct, and the second air outlet penetrates through the side wall of the second air outlet duct.

[0013] The first air outlet and the second air outlet are respectively arranged along the axial directions of the first air outlet duct and the second air outlet duct, ensuring the air outlet height range of the bladeless fan. In addition, both ends of the first air outlet duct have openings, while the lower end of the second air outlet duct has an opening and the upper end is blocked, so that the air in the inner air duct can enter the first air outlet duct through the opening at the lower end of the first air outlet duct, part of the air is discharged through the first air outlet, and another part of the air can enter the second air outlet duct through the opening at the upper end of the first air outlet duct and is discharged through the second air outlet, without leaking from the top of the second air outlet duct, improving the air outlet efficiency of the bladeless fan.

[0014] In some embodiments, the bladeless fan further includes a first air guide plate, a second air guide plate, a first air guide rib plate, and a second air guide rib plate.

[0015] Both ends of the first air guiding rib plate are respectively located at both ends of the first air outlet. One side edge of the first air guiding rib plate is arranged on the inner wall of the first air outlet duct, and the other side edge of the first air guiding rib plate extends towards the inner side of the first air outlet duct; A plurality of the first air guiding plates are arranged on the inner wall of the first air outlet duct at intervals along the axial direction of the first air outlet duct, and a part of the outer peripheral walls of the plurality of the first air guiding plates are connected to the inner wall of the first air outlet duct and one plate surface of the first air guiding rib plate, so as to divide the first air outlet into a plurality of air outlets, and further enable the air in the first air outlet duct to change direction through the first air guiding plates and the first air guiding ribs and then be discharged from the plurality of air outlets;

[0016] Both ends of the second air guiding rib plate are respectively located at both ends of the second air outlet. One side edge of the second air guiding rib plate is arranged on the inner wall of the second air outlet duct, and the other side edge of the second air guiding rib plate extends towards the inner side of the second air outlet duct; A plurality of the second air guiding plates are arranged on the inner wall of the second air outlet duct at intervals along the axial direction of the second air outlet duct, and a part of the outer peripheral walls of the plurality of the second air guiding plates are connected to the inner wall of the second air outlet duct and one plate surface of the second air guiding rib plate, so as to divide the second air outlet into a plurality of air outlets, and further enable the air in the second air outlet duct to change direction through the second air guiding plates and the second air guiding ribs and then be discharged from the plurality of air outlets.

[0017] Air guiding plates and air guiding rib plates are arranged in the first air outlet duct and the second air outlet duct, so that the air can flow in the first air outlet duct and the second air outlet duct at a set angle and be discharged from the first air outlet and the second air outlet at set positions.

[0018] In some embodiments, the side edge of the first air guiding rib plate located in the first air outlet duct bends towards the direction away from the first air outlet and forms a smooth bend;

[0019] The side edge of the second air guiding rib plate located in the second air outlet duct bends towards the direction away from the second air outlet and forms a smooth bend.

[0020] So that the air in the first air outlet duct and the second air outlet duct can smoothly pass through the first air outlet and the second air outlet through the air guiding rib plates and be discharged.

[0021] In some embodiments, the bladeless fan further includes a plurality of first arc-shaped air guiding plates and a plurality of second arc-shaped air guiding plates;

[0022] One ends of the plurality of first arc-shaped air guiding plates are all connected to the inner wall of the first air outlet duct, and the other ends of them all extend towards the inner side of the first air outlet duct and bend downwards, so as to divide the first air outlet into a plurality of air outlets;

[0023] One end of each of the plurality of second arc-shaped air guide plates is connected to the inner wall of the second air outlet duct, and the other end of each of them extends inwardly to the inside of the second air outlet duct and bends downward to divide the second air outlet into a plurality of air outlets.

[0024] Arc-shaped air guide plates that bend downward are arranged in the first air outlet duct and the second air outlet duct, so that air can flow in the first air outlet duct and the second air outlet duct at a set angle and discharge air through the first air outlet and the second air outlet at set positions.

[0025] In some embodiments, the distance that the first arc-shaped air guide plate extends inwardly to the inside of the first air outlet duct gradually increases from bottom to top;

[0026] The distance that the second arc-shaped air guide plate extends inwardly to the inside of the second air outlet duct gradually decreases from bottom to top.

[0027] The above arrangement of the arc-shaped air guide plates can enable the air entering the first air outlet duct to be discharged more concentratedly from the upper half of the first air outlet, and the air entering the second air outlet duct to be discharged more concentratedly from the lower half of the second air outlet pocket, that is, enable the air to be discharged more concentratedly from the middle of the bladeless fan, so as to better meet the user's requirements for the air outlet position.

[0028] In some embodiments, the bladeless fan further includes a duct fixing bracket and a middle fixing ring; the lower end of the duct fixing bracket is fixed on the host assembly, the upper end of the duct fixing bracket has an upper fixing ring, the lower end of the duct fixing bracket has a lower fixing ring, a limiting ring is arranged in the middle of the duct fixing bracket, the middle fixing ring is arranged on the limiting ring, and the upper fixing ring, the lower fixing ring and the limiting ring are coaxially arranged;

[0029] The outer wall of the lower end of the first air outlet duct fits with the inner wall of the lower fixing ring, and the outer wall of the upper end of the first air outlet duct fits with the lower part of the inner wall of the middle fixing ring; the outer wall of the upper end of the second air outlet duct fits with the inner wall of the upper fixing ring, and the outer wall of the lower end of the second air outlet duct fits with the upper part of the inner wall of the middle fixing ring, so that the first air outlet duct and the second air outlet duct are coaxially arranged.

[0030] Through the arrangement of the upper fixing ring, the lower fixing ring and the limiting ring on the duct fixing bracket, the coaxial installation of the first air outlet duct and the second air outlet duct is realized, so that the air in the inner air duct can enter the first air outlet duct and the second air outlet duct more smoothly.

[0031] In some embodiments, the first driving mechanism is disposed within the inner air duct. The first driving mechanism includes a first motor, a first driving gear, and a first driven gear. The first motor is connected to the first driving gear, the first driven gear is connected to the first driving gear, and the first driven gear is connected to the lower end of the first air outlet duct, so as to drive the first air outlet duct to rotate in different directions when the first motor rotates forward and backward.

[0032] By adopting the above first driving mechanism, the power of the first motor can be stably transmitted to the first air outlet duct, so as to independently drive the first air outlet duct to rotate stably and adjust the air outlet angle of the first air outlet.

[0033] The second driving mechanism is disposed at the upper part of the duct fixing bracket. The second driving mechanism includes a second motor, a second driving gear, and a second driven gear. The second motor is connected to the second driving gear, the second driven gear is connected to the second driving gear, and the second driven gear is connected to the upper end of the second air outlet duct, so as to drive the second air outlet duct to rotate in different directions when the second motor rotates forward and backward.

[0034] By adopting the above second driving mechanism, the power of the second motor can be stably transmitted to the second air outlet duct, so as to independently drive the second air outlet duct to rotate stably and adjust the air outlet angle of the second air outlet.

[0035] In some embodiments, when the first driving mechanism drives the first air outlet duct to rotate in a first direction, the second driving mechanism drives the second air outlet duct to rotate in a second direction, and the first direction is opposite to the second direction.

[0036] The first air outlet duct and the second air outlet duct rotate in different directions to achieve a larger air outlet range of the bladeless fan.

[0037] The beneficial effects of the embodiments of the present utility model are as follows:

[0038] The first driving mechanism independently drives the first air outlet duct to rotate, so as to independently control the air in the first air outlet duct to be discharged through the first air outlet at different angles; the air outlet angle of the first air outlet can be independently controlled to discharge air to different angular positions through the first air outlet, improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 Structural schematic diagram of the bladeless fan of the present invention;

[0041] Figure 2 Axial cross-sectional structural schematic diagram of the bladeless fan of the present invention;

[0042] Figure 3 Exploded view of the structure of the bladeless fan of the present invention;

[0043] Figure 4 Structural schematic diagram of the first drive mechanism, the second drive mechanism, the first air outlet duct and the second air outlet duct of the present invention;

[0044] Figure 5 Radial cross-sectional schematic diagram of the first air outlet duct of the present invention;

[0045] Figure 6 Three-dimensional structural schematic diagram of the first air outlet duct and the second air outlet duct of the present invention;

[0046] Figure 7 Axial structural schematic diagram of the first air outlet duct and the second air outlet duct in another embodiment of the present invention;

[0047] Figure 8 For the present invention Figure 7 Radial cross-sectional view of the second air outlet duct in;

[0048] Figure 9 Structural schematic diagram of the air outlet direction when the first air outlet duct and the second air outlet duct of the present invention rotate;

[0049] Figure 10 Structural schematic diagram of the air outlet direction when the first air outlet duct and the second air outlet duct of the present invention rotate to another position.

[0050] Reference numerals: 1, main machine component; 101, main machine housing; 102, inner air duct; 103, air inlet hole; 104, air wheel; 2, first air outlet duct; 201, first air outlet; 202, first air deflector; 203, first air deflector rib plate; 204, first arc-shaped air deflector; 3, second air outlet duct; 301, second air outlet; 302, second air deflector; 303, second air deflector rib plate; 304, second arc-shaped air deflector; 4, duct fixing bracket; 401, upper fixing ring; 402, lower fixing ring; 403, limiting ring; 5, middle fixing ring; 6, outer housing; 7, housing cover; 8, first motor; 9, first driving gear; 10, first driven gear; 11, second motor; 12, second driving gear; 13, second driven gear; 14, gear shaft. Detailed implementation manners

[0051] Reference is made herein to the various solutions and features of the present application with reference to the accompanying drawings.

[0052] It should be understood that various modifications can be made to the embodiments applied herein. Therefore, the above description should not be construed as a limitation, but merely as an example of the embodiments. Those skilled in the art will think of other modifications within the scope and spirit of the present application.

[0053] The accompanying drawings included in the specification and forming a part of the specification illustrate the embodiments of the present application, and together with the general description of the present application given above and the detailed description of the embodiments given below are used to explain the principles of the present application.

[0054] These and other features of the present application will become apparent from the following description of the preferred forms of the embodiments given by way of non-limiting examples with reference to the accompanying drawings.

[0055] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art can surely implement many other equivalent forms of the present application.

[0056] When combined with the accompanying drawings, the above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description.

[0057] Hereinafter, specific embodiments of the present application are described with reference to the accompanying drawings; however, it should be understood that the embodiments applied are merely examples of the present application and can be implemented in various ways. Well-known and / or repetitive functions and structures are not described in detail to avoid unnecessary or redundant details from obscuring the present application. Therefore, the specific structural and functional details applied herein are not intended to be limiting, but merely as a basis and representative basis for the claims to teach those skilled in the art to use the present application in substantially any suitable detailed structure in a variety of ways.

[0058] This specification may use phrases such as "in one embodiment", "in another embodiment", "in yet another embodiment", or "in other embodiments", all of which may refer to one or more of the same or different embodiments according to the present application.

[0059] To solve the problems in the background art, the present utility model provides a bladeless fan. In combination with Figure 1 , Figure 2 and Figure 3 , the bladeless fan includes a main body assembly 1, a first air outlet duct 2, and a second air outlet duct 3.

[0060] The main body assembly 1 includes a main body housing 101. The main body housing 101 has an inner air duct 102, and a fan assembly for sucking air into the inner air duct 102 is provided in the inner air duct 102. An air inlet hole 103 is provided on the main body housing 101. When the fan assembly operates, air enters the inner air duct 102 through the air inlet hole 103. The fan assembly includes a motor and a wind wheel 104 connected to the motor. The wind wheel 104 rotates under the drive of the motor, enabling air to enter the inner air duct 102 through the air inlet hole 103. The top of the main body housing 101 has an opening, and the first air outlet duct 2 can be arranged on the main body housing 101 through this opening. Specifically, the lower end of the first air outlet duct 2 can pass through this opening and extend into the inner air duct 102.

[0061] The first air outlet duct 2 has a first air outlet 201. In combination with Figure 4 , the lower end of the first air outlet duct 2 is connected to the main body assembly 1 through a first driving mechanism, and the first driving mechanism can be arranged inside the main body housing 101. The first air outlet duct 2 is communicated with the inner air duct 102. While the wind wheel 104 rotates, the air in the inner air duct 102 can enter the first air outlet duct 2 from the lower end of the first air outlet duct 2. The first air outlet duct 2 rotates under the driving action of the first driving mechanism, so that the air in the first air outlet duct 2 can be discharged at different angles through the first air outlet 201. That is, the first air outlet duct 2 can rotate relative to the main body assembly 1 under the driving action of the first driving mechanism. While the first air outlet duct 2 rotates, the first air outlet 201 on the first air outlet duct 2 also rotates accordingly. The air in the first air outlet duct 2 can be discharged at different angles through the first air outlet 201, and the rotation of the first air outlet 201 can blow air to multiple positions.

[0062] For example, the first driving mechanism can drive the first air outlet duct 2 to rotate by 360°, or can also drive the first air outlet duct 2 to rotate within a set angle range. For example, the first driving mechanism drives the first air outlet duct 2 to rotate in a range of 0° to 270° in a cyclic and reciprocating manner, and the specific angle range can be designed according to user needs. Of course, it can be understood that the rotation speed of the first driving mechanism for driving the first air outlet duct 2 can also be adjusted according to user needs.

[0063] The first air outlet duct 2 is driven to rotate independently by the first driving mechanism to separately control the air in the first air outlet duct 2 to be discharged from the first air outlet 201 at different angles. The air outlet angle of the first air outlet 201 can be separately controlled to discharge air to different angular positions through the first air outlet 201, improving the user experience.

[0064] In some embodiments, the bladeless fan further includes a second air outlet duct 3. The second air outlet duct 3 has a second air outlet 301. The lower end of the second air outlet duct 3 is communicated with the upper end of the first air outlet duct 2 so that the air in the first air outlet duct 2 can enter the second air outlet duct 3. While the wind wheel 104 is rotating, the air in the inner air duct 102 can enter the second air outlet duct 3 through the first air outlet duct 2 and the lower end of the second air outlet duct 3. Combining again Figure 4 , the upper end of the second air outlet duct is connected to the second driving mechanism and rotates under the driving action of the second driving mechanism so that the air in the second air outlet duct 3 can be discharged at different angles through the second air outlet 301. The same as the air outlet principle of the first air outlet duct 2, the second air outlet duct 3 rotates under the driving action of the second driving mechanism, and the second air outlet 301 on the second air outlet duct 3 also rotates accordingly to discharge the air in the second air outlet duct 3 in different directions, thereby realizing blowing air to multiple positions.

[0065] Similar to the first air outlet duct 2, the second driving mechanism can drive the first air outlet duct 2 to rotate by 360°, or can also drive the second air outlet duct 3 to rotate within a set angular range. For example, the second driving mechanism drives the second air outlet duct 3 to rotate in a reciprocating manner within the range of 0° to 270°. The specific angular range can be designed according to user needs. Of course, it can be understood that the rotation speed of the second driving mechanism driving the second air outlet duct 3 can also be adjusted according to user needs.

[0066] The first driving mechanism drives the first air outlet duct 2 to rotate independently, and the second driving structure drives the second air outlet duct 3 to rotate independently. It can be understood that the rotation direction of the first air outlet duct 2 can be the same as or different from that of the second air outlet duct 3; the rotation speeds of both can be the same or different. By driving the first air outlet duct 2 to rotate independently through the first driving mechanism, the air in the first air outlet duct 2 can be discharged through the first air outlet 201 at different angles; by driving the second air outlet duct 3 to rotate independently through the second driving mechanism, the air in the second air outlet duct 3 can be discharged through the second air outlet 301 at different angles; the air outlet angles of the first air outlet 201 and the second air outlet 301 can be separately and independently controlled, and the two alternate cyclically to switch the air outlet angles, so as to increase the residence time of the air flowing out through the first air outlet 201 and the second air outlet 301 during the rotation of the first air outlet duct 2 and the second air outlet duct 3, enhance the wind feeling, and improve the user experience.

[0067] In some embodiments, both ends of the first air outlet duct 2 have openings, the lower end of the second air outlet duct 3 has an opening, and the upper end of the second air outlet duct 3 is blocked. For example, a blocking plate can be provided at the upper end of the second air outlet duct 3 to prevent the air in the second air outlet duct 3 from being discharged from the upper end of the second air outlet duct 3, which affects the air outlet effect of the bladeless fan through the first air outlet 201 and the second air outlet 301.

[0068] Both the first air outlet duct 2 and the second air outlet duct 3 are cylindrical. Of course, the first air outlet duct 2 and the second air outlet duct 3 can also adopt cylindrical structures of other structural forms, as long as they can rotate under the driving action of the corresponding driving mechanisms. The first air outlet 201 is a long strip opening arranged along the axial direction of the first air outlet duct 2, the first air outlet 201 penetrates through the side wall of the first air outlet duct 2 and communicates with the internal space of the first air outlet duct 2, so that the air in the first air outlet duct 2 can be discharged through the first air outlet 201. The second air outlet 301 is a long strip opening arranged along the axial direction of the second air outlet duct 3, the second air outlet 301 penetrates through the side wall of the second air outlet duct 3 and communicates with the internal space of the second air outlet duct 3, so that the air in the second air outlet duct 3 can be discharged through the second air outlet 301.

[0069] Both the first air outlet duct 2 and the second air outlet duct 3 can be long cylinders. The length of the first air outlet 201 can be slightly less than the length of the first air outlet duct 2, and the length of the second air outlet 301 can be slightly less than the length of the second air outlet duct 3, so that the bladeless fan can discharge air in a larger range as much as possible.

[0070] The first air outlet duct 2 and the second air outlet duct 3 can be vertically and coaxially arranged on the main machine assembly 1.

[0071] The first air outlet 201 and the second air outlet 301 are respectively arranged along the axial directions of the first air outlet duct 2 and the second air outlet duct 3, ensuring the air outlet height range of the bladeless fan. In addition, both ends of the first air outlet duct 2 have openings, while the lower end of the second air outlet duct 3 has an opening and the upper end is blocked, so that the air in the inner air duct 102 can enter the first air outlet duct 2 through the opening at the lower end of the first air outlet duct 2. Part of the air is discharged through the first air outlet 201, and the other part of the air can enter the second air outlet duct 3 through the opening at the upper end of the first air outlet duct 2 and is discharged through the second air outlet 301, without leaking from the top of the second air outlet duct 3, thereby improving the air outlet efficiency of the bladeless fan.

[0072] In some embodiments, in combination with Figure 5 and Figure 6 , the bladeless fan further includes a first air deflector 202, a second air deflector 302, a first air guiding rib plate 203, and a second air guiding rib plate 303.

[0073] Both ends of the first air guiding rib plate 203 are respectively located at both ends of the first air outlet 201. One side of the first air guiding rib plate 203 is arranged on the inner wall of the first air outlet duct 2, and the other side of the first air guiding rib plate 203 extends towards the inside of the first air outlet duct 2. For example, the first air guiding rib plate 203 can be a rectangular plate. The long side of the rectangular plate is attached to the inner wall of the first air outlet duct 2, and the other long side of the rectangular plate extends towards the inside of the first air outlet duct 2. The two short sides of the rectangular plate are respectively located at the upper end and the lower end of the first air outlet 201.

[0074] The first air deflector 202 is arranged on the inner wall of the first air outlet duct 2 at intervals along the axial direction of the first air outlet duct 2, and part of the outer peripheral walls of a plurality of first air deflectors 202 are connected to the inner wall of the first air outlet duct 2 and one plate surface of the first air guiding rib plate 203, so as to divide the first air outlet 201 into a plurality of air outlets, and further enable the air in the first air outlet duct 2 to be discharged from the plurality of air outlets after changing direction through the first air deflector 202 and the first air guiding rib. That is, a plurality of first air deflectors 202 are located on the plate surface of the first air guiding rib plate 203 facing the first air outlet 201, and a plurality of first air guiding rib plates 203 are arranged at intervals. The plate surface of the first air guiding rib plate 203, the plate surfaces of a plurality of first air deflectors 202, and the inner wall surface of the first air outlet duct 2 enclose a plurality of air outlet spaces. The air in the first air outlet duct 2 can pass through the guiding action of the first air guiding rib plate 203 and the plurality of first air deflectors 202 and be discharged from the first air outlet duct 2 through the plurality of air outlet spaces.

[0075] Both ends of the second air guiding rib plate 303 are respectively located at both ends of the second air outlet 301. One side of the second air guiding rib plate 303 is arranged on the inner wall of the second air outlet duct 3, and the other side of the second air guiding rib plate 303 extends towards the inner side of the second air outlet duct 3. A plurality of second air guiding plates 302 are arranged at intervals along the axial direction of the second air outlet duct 3 on the inner wall of the second air outlet duct 3, and a part of the outer peripheral walls of the plurality of second air guiding plates 302 are connected to the inner wall of the second air outlet duct 3 and one plate surface of the second air guiding rib plate 303, so as to divide the second air outlet 301 into a plurality of air outlets, and further enable the air in the second air outlet duct 3 to be discharged from the plurality of air outlets after changing the direction through the second air guiding plates 302 and the second air guiding ribs. The arrangement modes of the second air guiding rib plate 303 and the second air guiding plates 302 in the second air outlet duct 3 are basically the same as those of the first air guiding rib plate 203 and the first air guiding plates 202 in the first air outlet duct 2, and will not be elaborated here.

[0076] Air guiding plates and air guiding rib plates are arranged in the first air outlet duct 2 and the second air outlet duct 3, so that the air can flow in the first air outlet duct 2 and the second air outlet duct 3 at a set angle and be discharged from the first air outlet 201 and the second air outlet 301 at set positions.

[0077] In some embodiments, the side of the first air guiding rib plate 203 located in the first air outlet duct 2 bends towards the direction away from the first air outlet 201 and forms a smooth bend. The side of the second air guiding rib plate 303 located in the second air outlet duct 3 bends towards the direction away from the second air outlet 301 and forms a smooth bend. So that the air in the first air outlet duct 2 and the second air outlet duct 3 can smoothly pass through the first air outlet 201 and the second air outlet 301 through the air guiding rib plates and be discharged. Moreover, the first air outlet 201 and the second air outlet 301 can be divided into a plurality of air outlet spaces with larger air inlet and smaller air outlet along the air outlet direction, so that the air in the first air outlet duct 2 and the second air outlet duct 3 can concentrate the wind force and be discharged through the air outlet spaces, improving the air outlet effect of the bladeless fan.

[0078] In some embodiments, in combination Figure 7 and Figure 8 , the bladeless fan further includes a plurality of first arc-shaped air guiding plates 204 and a plurality of second arc-shaped air guiding plates 304.

[0079] One end of each of the multiple first arc-shaped air guide plates 204 is connected to the inner wall of the first air outlet duct 2, and the other end of each extends inwardly into the first air outlet duct 2 and bends downward to divide the first air outlet 201 into multiple air outlets. One end of each of the multiple second arc-shaped air guide plates 304 is connected to the inner wall of the second air outlet duct 3, and the other end of each extends inwardly into the second air outlet duct 3 and bends downward to divide the second air outlet 301 into multiple air outlets. The middle of the end of the first arc-shaped air guide plate 204 disposed at the inner wall of the first air outlet duct 2 corresponds to the position of the first air outlet 201. The air in the first air outlet duct 2 can be discharged through a part of the first air outlet 201 after being guided by the first arc-shaped air guide plate 204, and the other part flows from both sides of the first air outlet 201 under the guiding action of the first arc-shaped plate. The setting manner of the second arc-shaped air guide plate 304 in the second air outlet duct 3 is the same as that of the first arc-shaped air guide plate 204, and will not be elaborated here.

[0080] In the embodiment of the present application, arc-shaped air guide plates that bend downward are provided in the first air outlet duct 2 and the second air outlet duct 3, so that air can flow in the first air outlet duct 2 and the second air outlet duct 3 at a set angle and discharge air through the first air outlet 201 and the second air outlet 301 at set positions.

[0081] In some embodiments, the distance that the first arc-shaped air guide plate 204 extends inwardly into the first air outlet duct 2 gradually increases from bottom to top. The distance that the second arc-shaped air guide plate 304 extends inwardly into the second air outlet duct 3 gradually decreases from bottom to top. For example, the size of the first arc-shaped air guide plate 204 in the first air outlet duct 2 can gradually increase from bottom to top. Or the first arc-shaped air guide plates 204 in the first air outlet duct 2 are of the same size, and the bending amplitude of the first arc-shaped air guide plate 204 toward the first air outlet duct 2 gradually decreases from bottom to top, that is, the distance that the first arc-shaped air guide plate 204 extends inwardly into the first air outlet duct 2 gradually increases from bottom to top. Of course, a flat plate can also be used as the air guide plate, and the air guide plate is disposed obliquely downward and extends inwardly into the first air outlet duct 2.

[0082] The above arrangement of the arc-shaped air guide plates can enable the air entering the first air outlet duct 2 to be discharged more concentratedly from the upper half of the first air outlet 201, and the air entering the second air outlet duct 3 to be discharged more concentratedly from the lower half of the second air outlet 301, that is, to enable the air to be discharged more concentratedly from the middle of the bladeless fan, so as to better meet the user's requirements for the air outlet position.

[0083] In some embodiments, combined again with Figure 2 、 Figure 3 and Figure 4, the bladeless fan further includes a duct fixing bracket 4 and a middle fixing ring 5. The duct fixing bracket 4 can be a bracket adapted to the first air outlet duct 2 and the second air outlet duct 3. For example, the duct fixing bracket 4 can include a long strip-shaped arc plate adapted to the outer shapes of the first air outlet duct 2 and the second air outlet duct 3. The first air outlet duct 2 and the second air outlet duct 3 are arranged on the inner plate surface side of the long strip-shaped arc plate. The length of the long strip-shaped arc plate is greater than the sum of the lengths of the first air outlet duct 2 and the second air outlet duct 3.

[0084] The upper end of the duct fixing bracket 4 has an upper fixing ring 401, the lower end of the duct fixing bracket 4 has a lower fixing ring 402, and a limiting ring 403 is arranged in the middle of the duct fixing bracket 4. The middle fixing ring 5 is arranged on the limiting ring 403, and the upper fixing ring 401, the lower fixing ring 402 and the limiting ring 403 are coaxially arranged. That is, the top of the long strip-shaped arc plate has an upper fixing ring 401 adapted to the outer shape of the second air outlet duct 3, the lower part of the long strip-shaped arc plate has a lower fixing ring 402 adapted to the outer shape of the first air outlet duct 2, and the middle of the long strip-shaped arc plate has a limiting ring 403 adapted to the outer shapes of the first air outlet duct 2 and the second air outlet duct 3. The middle fixing ring 5 can be a separate ring part, which is arranged on the limiting ring 403. For example, a limiting groove is arranged on the limiting ring 403, and the middle of the middle fixing ring 5 has a limiting protrusion cooperating with the limiting groove on the limiting ring 403 to limit and fix the middle fixing ring 5 on the limiting ring 403. The lower end of the middle fixing ring 5 extends downward below the limiting ring 403 for cooperating with the outer wall of the upper end of the first air outlet duct 2; the upper end of the middle fixing ring 5 extends upward above the limiting ring 403 for cooperating with the outer wall of the lower end of the second air outlet duct 3.

[0085] The lower end of the duct fixing bracket 4 is fixed on the main machine assembly 1. For example, the lower end of the duct fixing bracket 4 can be detachably arranged on the main machine shell 101 by screws or the like.

[0086] The bladeless fan may further include a housing 6. The housing 6 is arranged outside the duct fixing bracket 4 and fixed to the duct fixing bracket 4 to protect the duct fixing bracket 4 and also improve the aesthetics of the bladeless fan. In addition, the bladeless fan may further include a housing cover 7, which is arranged on the top of the housing 6 to cover the second driving mechanism. On the one hand, it improves the aesthetics of the bladeless fan, and on the other hand, it avoids the exposure of the second driving mechanism and plays a protective role.

[0087] The outer wall of the lower end of the first air outlet duct 2 fits against the inner wall of the lower fixing ring 402, and the outer wall of the upper end of the first air outlet duct 2 fits against the lower part of the inner wall of the middle fixing ring 5. The outer wall of the upper end of the second air outlet duct 3 fits against the inner wall of the upper fixing ring 401, and the outer wall of the lower end of the second air outlet duct 3 fits against the upper part of the inner wall of the middle fixing ring 5, so that the first air outlet duct 2 and the second air outlet duct 3 are coaxially arranged, and the first air outlet duct 2 and the second air outlet duct 3 can rotate coaxially. Through the arrangement of the upper fixing ring 401, the lower fixing ring 402 and the limiting ring 403 on the duct fixing bracket 4, the coaxial installation of the first air outlet duct 2 and the second air outlet duct 3 is realized, so that the air in the inner air duct 102 can enter the first air outlet duct 2 and the second air outlet duct more smoothly.

[0088] The first air outlet duct 2 and the second air outlet duct 3 are radially limited by the upper fixing ring 401, the middle fixing ring 5 and the lower fixing ring 402, so as to prevent the first air outlet duct 2 and the second air outlet duct 3 from shaking during rotation.

[0089] In some embodiments, referring again to Figure 4 , the first driving mechanism is arranged in the inner air duct 102. The first driving mechanism includes a first motor 8, a first driving gear 9 and a first driven gear 10. The first motor 8 is connected to the first driving gear 9, the first driven gear 10 is connected to the first driving gear 9, and the first driven gear 10 is connected to the lower end of the first air outlet duct 2, so as to drive the first air outlet duct 2 to rotate in different directions when the first motor 8 rotates forward and backward. For example, the center of the first driven gear 10 has a mounting hole, and the lower end of the first air outlet duct 2 can pass through the mounting hole of the first driven gear 10, and the lower end of the first air outlet duct 2 is fixed on the first driven gear 10, so as to drive the first air outlet duct 2 to rotate synchronously with the first driven gear 10 when the first driven gear 10 rotates.

[0090] The rotation speed of the first air outlet duct 2 can be adjusted by adjusting the transmission ratio between the first driving gear 9 and the first driven gear 10. When the first motor 8 drives the first air outlet duct 2 to rotate by forward and backward rotation, a certain number of teeth can be arranged on the outer peripheral wall of the first driving gear 9 according to the rotation range of the first air outlet duct 2, instead of using a gear with teeth arranged in a whole circle. In addition, the first motor 8 can but is not limited to a stepping motor, and the type and model of the motor can be selected according to specific requirements.

[0091] The above first driving mechanism can stably transmit the power of the first motor 8 to the first air outlet duct 2, so as to independently drive the first air outlet duct 2 to rotate stably and adjust the air outlet angle of the first air outlet 201.

[0092] Of course, it can be understood that other driving methods can also be adopted to drive the first air outlet duct 2 to rotate. This is only an example and does not constitute a limitation on the protection scope of the claims.

[0093] In some embodiments, in combination with Figure 2 and Figure 4 , the second driving mechanism is arranged on the upper part of the duct fixing frame 4. The second driving mechanism includes a second motor 11, a second driving gear 12 and a second driven gear 13. The second motor 11 is connected to the second driving gear 12, the second driven gear 13 is connected to the second driving gear 12, and the second driven gear 13 is connected to the upper end of the second air outlet duct 3, so as to drive the second air outlet duct 3 to rotate in different directions when the second motor 11 rotates forward and backward. For example, the second motor 11 can be arranged at the blocking position of the second air outlet duct 3, that is, a blocking plate can be arranged at the upper end of the second air outlet duct 3, and the second motor 11 is arranged on the blocking plate. The second driven gear 13 can be connected to the blocking plate of the second air outlet duct 3 through a gear shaft 14, so as to drive the second air outlet duct 3 to rotate synchronously when the second driven gear 13 rotates. The matching mode of the second driving roller gear and the second driven gear 13 can be the same as that of the first driving gear 9 and the second driven gear 13, and will not be described in detail here. In addition, the second motor 11 can be, but is not limited to, a stepping motor, and the type and model of the motor can be selected according to specific requirements.

[0094] By adopting the above second driving mechanism, the power of the second motor 11 can be stably transmitted to the second air outlet duct 3, so as to independently drive the second air outlet duct 3 to rotate stably and adjust the air outlet angle of the second air outlet 301.

[0095] In some embodiments, in combination with Figure 9 and Figure 10 , when the first driving mechanism drives the first air outlet duct 2 to rotate in the first direction, the second driving mechanism drives the second air outlet duct 3 to rotate in the second direction, and the first direction is opposite to the second direction. The first air outlet duct 2 and the second air outlet duct 3 rotate in different directions to achieve a larger air outlet range of the bladeless fan.

[0096] The above has described multiple embodiments of the present invention in detail, but the present invention is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications to the embodiments on the basis of the concept of the present invention, and these variations and modifications should fall within the scope of protection required by the present invention.

Claims

1. A bladeless fan, characterized in that: include: A main unit component (1) having an inner air duct (102), wherein a fan component for sucking air into the inner air duct (102) is arranged in the inner air duct (102); A first air outlet duct (2) having a first air outlet (201); the lower end of the first air outlet duct (2) is connected to the main unit component (1) via a first driving mechanism, and the first air outlet duct (2) is connected to the inner air duct (102) so that the air in the inner air duct (102) can enter the first air outlet duct (2); the first air outlet duct (2) rotates under the driving action of the first driving mechanism so that the air in the first air outlet duct (2) can be discharged at different angles through the first air outlet (201).

2. The bladeless fan according to claim 1, characterized in that: The bladeless fan further comprises a second air outlet duct (3), the second air outlet duct (3) having a second air outlet (301), the lower end of the second air outlet duct (3) being connected to the upper end of the first air outlet duct (2), so that the air in the first air outlet duct (2) can enter the second air outlet duct (3); the upper end of the second air outlet duct is connected to a second driving mechanism, and rotates under the driving action of the second driving mechanism, so that the air in the second air outlet duct (3) can be discharged at different angles through the second air outlet (301).

3. The bladeless fan according to claim 2, characterized in that: Both ends of the first air outlet duct (2) are open, the lower end of the second air outlet duct (3) is open, and the upper end of the second air outlet duct (3) is blocked; The first air outlet duct (2) and the second air outlet duct (3) are both cylindrical; the first air outlet (201) is a long strip of opening arranged along the axial direction of the first air outlet duct (2), and the first air outlet (201) passes through the side wall of the first air outlet duct (2); the second air outlet (301) is a long strip of opening arranged along the axial direction of the second air outlet duct (3), and the second air outlet (301) passes through the side wall of the second air outlet duct (3).

4. The bladeless fan according to claim 2, characterized in that: The bladeless fan further comprises a first wind guide plate (202), a second wind guide plate (302), a first wind guide rib plate (203) and a second wind guide rib plate (303); The two ends of the first air guide rib (203) are respectively located at the two ends of the first air outlet (201), one side of the first air guide rib (203) is arranged on the inner wall of the first air outlet duct (2), and the other side of the first air guide rib (203) extends to the inner side of the first air outlet duct (2); a plurality of the first air guide plates (202) are arranged on the inner wall of the first air outlet duct (2) at intervals along the axial direction of the first air outlet duct (2), and part of the outer peripheral walls of the plurality of the first air guide plates (202) are connected to the inner wall of the first air outlet duct (2) and a plate surface of the first air guide rib (203), so as to divide the first air outlet (201) into a plurality of air outlets, thereby enabling the air in the first air outlet duct (2) to be discharged from the plurality of air outlets after changing direction through the first air guide plate (202) and the first air guide rib; The two ends of the second air guide rib (303) are respectively located at the two ends of the second air outlet (301), one side of the second air guide rib (303) is arranged on the inner wall of the second air outlet duct (3), and the other side of the second air guide rib (303) extends to the inner side of the second air outlet duct (3); a plurality of second air guide plates (302) are arranged on the inner wall of the second air outlet duct (3) at intervals along the axial direction of the second air outlet duct (3), and part of the outer peripheral walls of the plurality of second air guide plates (302) are connected to the inner wall of the second air outlet duct (3) and a plate surface of the second air guide rib (3) to separate the second air outlet (301) into a plurality of air outlets, so that the air in the second air outlet duct (3) can be discharged from the plurality of air outlets after changing direction through the second air guide plate (302) and the second air guide ribs.

5. The bladeless fan according to claim 4, characterized in that: The side edge of the first air guide rib plate (203) located in the first air outlet duct (2) is bent in a direction away from the first air outlet (201) to form a smooth bend; The side edge of the second air guide rib plate (303) located inside the second air outlet duct (3) is bent in a direction away from the second air outlet (301) to form a smooth bend.

6. The bladeless fan according to claim 2, characterized in that: The bladeless fan further comprises a plurality of first curved air guide plates (204) and a plurality of second curved air guide plates (304); One end of each of the plurality of first arc-shaped air guide plates (204) is connected to the inner wall of the first air outlet duct (2), and the other end thereof extends toward the inside of the first air outlet duct (2) and bends downward, so as to divide the first air outlet (201) into a plurality of air outlets; One end of each of the plurality of second arc-shaped air guide plates (304) is connected to the inner wall of the second air outlet duct (3), and the other end thereof extends toward the inside of the second air outlet duct (3) and bends downward, so as to separate the second air outlet (301) into a plurality of air outlets.

7. The bladeless fan according to claim 6, characterized in that: The distance that the first arc-shaped air guide plate (204) extends toward the inner side of the first air outlet duct (2) gradually increases from bottom to top; The distance that the second arc-shaped air guide plate (304) extends toward the inner side of the second air outlet duct (3) gradually decreases from bottom to top.

8. The bladeless fan according to claim 2, characterized in that: The bladeless fan further comprises a pipe fixing frame (4) and a middle fixing ring (5); the lower end of the pipe fixing frame (4) is fixed on the main unit assembly (1); the upper end of the pipe fixing frame (4) has an upper fixing ring (401); the lower end of the pipe fixing frame (4) has a lower fixing ring (402); a limiting ring (403) is arranged in the middle of the pipe fixing frame (4); the middle fixing ring (5) is arranged on the limiting ring (403); and the upper fixing ring (401) is coaxially arranged with the lower fixing ring (402) and the limiting ring (403); The outer wall of the lower end of the first air outlet duct (2) fits with the inner wall of the lower fixing ring (402), and the outer wall of the upper end of the first air outlet duct (2) fits with the lower part of the inner wall of the middle fixing ring (5); the outer wall of the upper end of the second air outlet duct (3) fits with the inner wall of the upper fixing ring (401), and the outer wall of the lower end of the second air outlet duct (3) fits with the upper part of the inner wall of the middle fixing ring (5), so that the first air outlet duct (2) and the second air outlet duct (3) are coaxially arranged.

9. The bladeless fan according to claim 8, characterized in that: The first driving mechanism is arranged in the inner air duct (102), and comprises a first motor (8), a first driving gear (9) and a first driven gear (10), the first motor (8) is connected to the first driving gear (9), the first driven gear (10) is connected to the first driving gear (9), and the first driven gear (10) is connected to the lower end of the first air outlet duct (2), so as to drive the first air outlet duct (2) to rotate in different directions when the first motor (8) rotates forward or reversely; The second driving mechanism is arranged on the upper part of the pipe fixing frame (4), and comprises a second motor (11), a second driving gear (12) and a second driven gear (13); the second motor (11) is connected to the second driving gear (12), the second driven gear (13) is connected to the second driving gear (12), and the second driven gear (13) is connected to the upper end of the second air outlet pipe (3), so as to drive the second air outlet pipe (3) to rotate in different directions when the second motor (11) rotates forward or reversely.

10. The bladeless fan according to claim 9, characterized in that: When the first driving mechanism drives the first air outlet duct (2) to rotate along a first direction, the second driving mechanism drives the second air outlet duct (3) to rotate along a second direction, and the first direction is opposite to the second direction.

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