Axial flow fan, fan system and air conditioning device

Abstract

The utility model discloses an axial flow fan, a fan system and an air conditioning device. A rotating assembly of the axial flow fan comprises a fixing frame, a rotating shaft and a plurality of blades, the blades are symmetrically arranged around a first axis center, the size of the first ends of the blades in the third direction is larger than that of the blades in the third direction, and the second ends of the blades are hinged to the fixing frame through the rotating shaft. The first ends are the ends, away from the rotating shaft, of the blades, the second ends are the ends, close to the rotating shaft, of the blades, and the first axis is the center point of a graph defined by the blades; the transmission assembly comprises a starting rod, a telescopic box and a driving rod set, the starting rod and the telescopic box are movably connected in the first direction, the telescopic box and the driving rod set are movably connected in the first direction, and the blades are movably connected to the driving rod set through rotating shafts. Therefore, air outlet in any direction in the axial direction can be achieved by adjusting the relative positions of the first ends and the second ends of the blades, and the air outlet amount cannot be attenuated.

Description

Technical Field

[0001] The present application belongs to the field of air conditioning technology, and specifically relates to an axial flow fan, a fan system and an air conditioning device. Background Art

[0002] The three most widely used fan systems for air conditioners are centrifugal, cross-flow, and axial-flow fans. Each fan system offers its own advantages, meeting the development needs of different air conditioner products. Axial-flow fans are widely used in air conditioners due to their high efficiency, low noise, compact size, and high reliability.

[0003] Currently, when the impeller of an axial flow fan rotates, air enters the impeller axially from the air inlet. The air is pushed by the impeller blades, increasing its energy, and then flows into the guide vanes. The air volume of an axial flow fan is primarily determined by the size, rotational speed, and blade angle of the blades. Generally, the smaller the blade angle, the lower the resistance, and the greater the air volume. Traditional axial flow blades are designed to maximize air volume by reducing the angle of the forward blades, thereby maximizing air volume on the front side. This characteristic results in the blades having a front and back side, and thus, the motor-driven blade rotation has a front and back side. When the motor rotates in the reverse direction, the blade rotation direction also changes accordingly. At this time, the blade angle is larger, increasing resistance and weakening the blade's propulsion force, preventing the blade from pushing air at the optimal angle and speed. Therefore, the air volume of the blades used in the prior art decreases rapidly when they are reversed, resulting in a single airflow pattern, which affects air volume and reduces the user experience. Achieving reversible airflow requires combining multiple fan systems, which results in an oversized unit and a large footprint. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide an axial flow fan, a fan system and an air conditioning device, which can solve the problem in the prior art that the air volume of the axial flow fan will rapidly decrease when the blades are reversed.

[0005] To solve the above technical problems, in a first aspect, an embodiment of the present utility model provides an axial flow fan, wherein the axial flow fan includes a first direction, a second direction, and a third direction intersecting in pairs, including:

[0006] A rotating assembly, the rotating assembly comprising a fixed frame, a rotating shaft, and a plurality of blades, the plurality of blades being symmetrically arranged around a first axis, the first ends of the blades being larger than the second ends of the blades in the third direction, the second ends of the plurality of blades being hinged to the fixed frame via the rotating shaft, wherein the first end is an end of the blade away from the rotating shaft, the second end is an end of the blade close to the rotating shaft, and the first axis is the center point of a figure formed by the plurality of blades;

[0007] a transmission assembly, the transmission assembly comprising a starting rod, a telescopic box, and a driving rod group, the starting rod and the telescopic box being movably connected along the first direction, the telescopic box and the driving rod group being movably connected along the first direction, and the plurality of blades being movably connected to the driving rod group via the rotating shaft;

[0008] When the starting rod moves in the first direction toward the direction close to the plurality of blades, the telescopic box drives the driving rod group to move, and the distance between the first end and the bottom of the fixing frame in the first direction is smaller than the distance between the second end and the bottom of the fixing frame in the first direction, and the axial flow fan is in the first air outlet state;

[0009] When the starting rod moves along the first direction away from the multiple blades, the telescopic box drives the driving rod group to move, the distance between the first end and the bottom of the fixing frame in the first direction is greater than the distance between the second end and the bottom of the fixing frame in the first direction, and the axial flow fan is in the second air outlet state.

[0010] Optionally, the fixing frame includes at least two groups of oppositely arranged side walls, and each of the side walls is movably connected to one of the blades.

[0011] Optionally, a rotation groove and a rotation hole are formed on each of the side walls, wherein the rotation groove is an arc-shaped through groove and is concave toward the rotation hole;

[0012] The rotating shaft includes a first rotating shaft and a second rotating shaft, one end of the first rotating shaft is fixedly connected to the first end of the blade, the other end of the first rotating shaft passes through the driving rod group and is hinged in the rotating hole, one end of the second rotating shaft is fixedly connected to the first end of the blade, the other end of the second rotating shaft passes through the driving rod group and is hinged in the rotating groove;

[0013] In the first air outlet state, the second rotating shaft is at the first position of the rotating slot, and in the second air outlet state, the second rotating shaft is at the second position of the rotating slot, wherein the first position is the direction of the rotating slot away from the starting rod in the first direction, and the second position is the direction of the rotating slot close to the starting rod in the first direction.

[0014] Optionally, the driving rod group includes a first connecting rod structure and a second connecting rod structure, the number of the first connecting rod structures is consistent with the number of the second connecting rod structures, and the number of the first connecting rod structures is consistent with the number of the blades;

[0015] One end of the first connecting rod structure in the first direction is hinged to the telescopic box, and the other end of the first connecting rod structure in the first direction is hinged to the second connecting rod structure. Each of the blades is hinged to the second connecting rod structure through the first rotating shaft and the second rotating shaft.

[0016] Optionally, the second connecting rod structure includes a first lever arm and a second lever arm arranged to intersect each other, a first hinge hole is respectively formed at both ends of the first lever arm, a second hinge hole is respectively formed at both ends of the second lever arm, and a third hinge hole is formed at the intersection of the first lever arm and the second lever arm, wherein the first hinge hole and the second hinge hole are located at two positions opposite to each other in an obliquely upward direction;

[0017] The end of the first connecting rod structure is hinged in the first hinge hole, the first rotating shaft is hinged in the third hinge hole, and the second rotating shaft is hinged in the second hinge hole.

[0018] Optionally, a fourth hinge hole is provided at one end of the first connecting rod structure in the first direction, and a first hinge column is provided at the other end of the first connecting rod structure in the first direction;

[0019] The telescopic box includes at least two groups of outer walls arranged opposite to each other, each outer wall is provided with a second hinge column, the first hinge column is hinged in the fourth hinge hole, and the second hinge column is hinged in the first hinge hole.

[0020] Optionally, a movable hole is provided at the bottom of the telescopic box, and the starting rod is movably connected to the telescopic box through the movable hole.

[0021] Optionally, the starting rod includes a first limiting convex ring and a second limiting convex ring;

[0022] The first limiting protrusion ring and the second limiting protrusion ring are spaced apart along the first direction, the first limiting protrusion ring is located at an end of the starting rod close to the plurality of driving rod groups, and the second limiting protrusion ring is located at an end of the starting rod away from the driving rod group;

[0023] In the first air outlet state, the second limiting protrusion abuts against the first orifice of the movable hole. In the second air outlet state, the first limiting protrusion abuts against the second orifice of the movable hole. The first orifice and the second orifice are two opposite orifices of the movable hole in the first direction. The first orifice is far away from the driving rod group, and the second orifice is close to the driving rod group.

[0024] Optionally, the axial flow fan further includes a bracket, the bracket includes a receiving cavity, and the rotating assembly and the transmission assembly are both received in the receiving cavity.

[0025] Optionally, the axial flow fan further includes a drive assembly;

[0026] The driving assembly includes a driving motor and a mounting bracket, wherein the driving motor is drivingly connected to the second end of the motor via the mounting bracket;

[0027] The driving motor drives the plurality of blades to rotate in a first rotation direction and a second rotation direction, wherein the first rotation direction and the second rotation direction are opposite directions;

[0028] When the drive motor drives the plurality of blades to rotate in the first direction, the axial flow fan is in a first air outlet state; when the drive motor drives the plurality of blades to rotate in the second direction, the axial flow fan is in a second air outlet state.

[0029] In a second aspect, a fan system comprises a first air duct component, a second air duct component, and the axial flow fan according to any embodiment of the first aspect;

[0030] The first air duct component is arranged at the top air outlet of the axial flow fan, and the second air duct component is arranged at the bottom air outlet of the axial flow fan. The top air outlet and the bottom air outlet are two opposite air outlets of the axial flow fan in the first direction.

[0031] Optionally, the fan system further includes an air duct conversion component, and one air duct conversion component is provided in each of the first air duct component and the second air duct component;

[0032] When the axial flow fan is in the first air outlet state, the air duct conversion component in the first air duct component is in an open state, and the air duct conversion component in the second air duct component is in a closed state. When the axial flow fan is in the second air outlet state, the air duct conversion component in the first air duct component is in a closed state, and the air duct conversion component in the second air duct component is in an open state.

[0033] Optionally, the air duct conversion component is a baffle structure, and one of the baffle structures is hingedly connected to each of the first air duct component and the second air duct component.

[0034] In a third aspect, an embodiment of the present invention further provides an air-conditioning device, which includes a fan system as described in any embodiment of the second aspect.

[0035] In an embodiment of the present invention, the rotating assembly includes a fixed frame, a rotating shaft, and a plurality of blades, the plurality of blades are symmetrically arranged around a first axis, the dimension of the first end of the blade in the third direction is greater than the dimension of the blade in the third direction, and the second ends of the plurality of blades are hinged to the fixed frame via the rotating shaft. Therefore, the plurality of blades can be movably connected to the fixed frame around the rotating shaft, thereby changing the relative position of the first and second ends of the blades. Furthermore, the transmission assembly includes a starting rod, a telescopic box, and a drive rod assembly. The starting rod and the telescopic box are movably connected along the first direction, the telescopic box and the drive rod assembly are movably connected along the first direction, and the plurality of blades are movably connected to the drive rod assembly via the rotating shaft. Therefore, the starting rod can drive the telescopic box to move in the first direction, which in turn drives the drive rod assembly to move, thereby changing the relative position of the first and second ends of the blades via the drive rod assembly. Thus, when the actuating rod moves in the first direction toward the plurality of blades, the telescopic box drives the driving rod assembly to move, so that the distance between the first end and the bottom of the fixing frame in the first direction is smaller than the distance between the second end and the bottom of the fixing frame in the first direction, causing the blades to tilt in the direction of the second end extending toward the first end, thereby accommodating shear layer airflow generated in the first direction toward a side away from the bottom of the fixing frame, thereby forming a stable gas flow in the first direction toward a side away from the bottom of the fixing frame. When the actuating rod moves in the first direction toward the plurality of blades, the telescopic box drives the driving rod assembly to move, so that the distance between the first end and the bottom of the fixing frame in the first direction is larger than the distance between the second end and the bottom of the fixing frame in the first direction, causing the blades to tilt in the direction of the first end extending toward the second end, thereby accommodating shear layer airflow generated in the first direction toward a side close to the bottom of the fixing frame, thereby forming a stable gas flow in the first direction toward a side close to the bottom of the fixing frame.

[0036] To sum up, through the axial flow fan provided by the embodiment of the present invention, multiple blades generate air volume along any side of the first direction, and the air volume will not be attenuated, thereby achieving the purpose of reversible air discharge of a single axial flow fan. That is, in the axial flow fan provided by the embodiment of the present invention, air discharge along any side of the first direction can be achieved only by adjusting the relative position of the first end and the second end of the blade, effectively reducing the number of rotating components required for the axial flow fan to achieve different sides of the first direction, thereby saving development costs, reducing the size of the axial flow fan, and making the axial flow fan more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0038] Figure 1 This is one of the exploded structural diagrams of the axial flow fan provided in the embodiment of the present application;

[0039] Figure 2 This is the second exploded structural diagram of the axial flow fan provided in the embodiment of the present application;

[0040] Figure 3 1 is a front structural schematic diagram of the axial flow fan provided in an embodiment of the present application in a first air outlet state;

[0041] Figure 4 1 is a schematic diagram of the back structure of the axial flow fan provided in an embodiment of the present application in a first air outlet state;

[0042] Figure 5 1 is a schematic structural diagram of a rotating assembly of an axial flow fan provided in an embodiment of the present application in a first air outlet state;

[0043] Figure 6 1 is a front structural schematic diagram of the axial flow fan provided in an embodiment of the present application in a second air outlet state;

[0044] Figure 7 1 is a schematic diagram of the back structure of the axial flow fan provided in an embodiment of the present application in a second air outlet state;

[0045] Figure 8 1 is a schematic structural diagram of a rotating assembly of an axial flow fan provided in an embodiment of the present application in a second air outlet state;

[0046] Figure 9 1 is a schematic structural diagram of a second connecting rod structure included in the axial flow fan provided in an embodiment of the present application;

[0047] Figure 10 It is a structural schematic diagram of the transmission assembly included in the axial flow fan provided in an embodiment of the present application.

[0048] Reference numerals:

[0049] 1: Rotation assembly; 11: Fixed frame; 111: Rotation slot; 112: Rotation hole; 12: Rotation shaft; 121: First rotation shaft; 122: Second rotation shaft; 13: Blade; 131: First end; 132: Second end; 2: Transmission assembly; 21: Starting rod; 211: First limiting convex ring; 212: Second limiting convex ring; 22: Telescopic box; 221: Second hinged column; 23: Driving rod group; 231: First connecting rod structure; 2311: Fourth hinged hole; 2312: First hinged column; 232: Second connecting rod structure; 2321: First lever arm; 23211: First hinged hole; 2322: Second lever arm; 23221: Second hinged hole; 23222: Third hinged hole; 3: Bracket; 4: Driving assembly; 41: Driving motor; 42: Mounting frame. DETAILED DESCRIPTION

[0050] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0051] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0052] The axial flow fan according to the embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0053] First, as Figures 1 to 10 As shown, an embodiment of the present invention provides an axial flow fan, which includes a first direction (Z), a second direction (X), and a third direction (Y) intersecting each other, including:

[0054] The rotating assembly 1 includes a fixed frame 11, a rotating shaft 12 and a plurality of blades 13, wherein the plurality of blades 13 are symmetrically arranged around a first axis center, wherein the size of the first end 131 of the blade 13 in the third direction (Y) is larger than the size of the blade 13 in the third direction (Y), and the second ends 132 of the plurality of blades 13 are hinged to the fixed frame 11 through the rotating shaft 12, wherein the first end 131 is the end of the blade 13 away from the rotating shaft 12, the second end 132 is the end of the blade 13 close to the rotating shaft 12, and the first axis center is the center point of the figure surrounded by the plurality of blades 13.

[0055] The transmission assembly 2 includes a starting rod 21, a telescopic box 22, and a driving rod group 23. The starting rod 21 and the telescopic box 22 are movably connected along a first direction (Z), the telescopic box 22 and the driving rod group 23 are movably connected along a first direction (Z), and multiple blades 13 are movably connected to the driving rod group 23 through a rotating shaft 12.

[0056] When the starting rod 21 moves along the first direction (Z) toward the direction close to the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), and the axial flow fan is in the first air outlet state.

[0057] When the starting rod 21 moves along the first direction (Z) toward a direction away from the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), and the axial flow fan is in the second air outlet state.

[0058] It can be seen from the above embodiments that in the embodiments of the present utility model, since the rotating component 1 includes a fixed frame 11, a rotating shaft 12 and a plurality of blades 13, the plurality of blades 13 are symmetrically arranged around the first axis center, the size of the first end 131 of the blade 13 in the third direction (Y) is larger than the size of the blade 13 in the third direction (Y), and the second ends 132 of the plurality of blades 13 are hinged to the fixed frame 11 through the rotating shaft 12, so that the plurality of blades 13 can be movably connected to the fixed frame 11 around the rotating shaft 12, thereby changing the relative position of the first end 131 and the second end 132 of the blade 13. Furthermore, since the transmission assembly 2 includes a starting rod 21, a telescopic box 22, and a driving rod group 23, the starting rod 21 and the telescopic box 22 are movably connected along a first direction (Z), the telescopic box 22 and the driving rod group 23 are movably connected along the first direction (Z), and the plurality of blades 13 are movably connected to the driving rod group 23 via the rotating shaft 12. Therefore, the telescopic box 22 can be driven to move along the first direction (Z) by the starting rod 21, and then the driving rod group 23 is driven to move, and the relative position of the first end 131 and the second end 132 of the blade 13 is changed by the driving rod group 23. In this way, when the starting rod 21 moves along the first direction (Z) toward the direction close to the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blades 13 are inclined in the direction of extension of the second end 132 toward the first end 131, thereby adapting to the shear layer airflow generated in the first direction (Z) toward the side away from the bottom of the fixing frame 11, thereby forming a stable gas flow in the first direction (Z) toward the side away from the bottom of the fixing frame 11. When the starting rod 21 moves in the first direction (Z) away from the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, so that the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z). The blades 13 are tilted in the direction of extension from the first end 131 to the second end 132, thereby adapting to the shear layer airflow generated in the first direction (Z) toward the side close to the bottom of the fixing frame 11, thereby forming a stable gas flow in the first direction (Z) toward the side close to the bottom of the fixing frame 11.

[0059] To sum up, through the axial flow fan provided by the embodiment of the present invention, multiple blades generate air volume along any side of the first direction (Z), and the air volume will not be attenuated, thereby achieving the purpose of reversible air discharge of a single axial flow fan. That is, in the axial flow fan provided by the embodiment of the present invention, air discharge along any side of the first direction (Z) can be achieved by simply adjusting the relative positions of the first end 131 and the second end 132 of the blade 13, effectively reducing the number of rotating components 1 required for the axial flow fan to achieve different sides in the first direction (Z), thereby saving development costs, reducing the size of the axial flow fan, and making the axial flow fan more energy-efficient.

[0060] In this embodiment, the fixed frame 11 can be a cylindrical structure, and the number of blades 13 included in the rotating assembly 1 is at least two, and can be three, four, five, six, etc., which is not limited in the embodiment of the present invention. The multiple blades 13 are arranged around a first axis, and the first axis is on the axis of the first direction (Z) and at the midpoint of the figure surrounded by the multiple blades 13, so that the multiple blades 13 form a circular fan structure. The size of the first end 131 of the blade 13 in the third direction (Y) is greater than the size of the blade 13 in the third direction (Y), that is, the width of the outer side of the blade 13 is greater than the width of the inner side of the blade 13, that is, the width of the end of the blade 13 close to the central symmetry point is smaller than the width of the end of the blade 13 away from the central symmetry point. In this way, different wind directions can be formed by adjusting the relative positions of the first end 131 and the second end 132 relative to the fixed frame 11. In addition, the contour of the first end 131 of the blade 13 can be arc-shaped, so that the contours of the first ends 131 of the multiple blades 13 can form a circle, which is more conducive to the multiple blades 13 generating a stable air volume when rotating.

[0061] The transmission assembly 2, which is transmission-connected to the rotating assembly 1, includes a starting rod 21, a telescopic box 22, and a drive rod group 23. The starting rod 21 is a rod-shaped structure, and the starting rod 21 can provide external forces on different sides of the telescopic box 22 in the first direction (Z). The starting rod 21 can be connected to a driving mechanism capable of achieving linear motion, such as a cylinder assembly, a motor screw structure, etc., so that the starting rod 21 can move in the first direction (Z). The telescopic box 22 and the starting rod 21 can be connected by an elastic connection, a hole-shaft connection, etc., so that the starting rod 21 can drive the telescopic movement in the first direction (Z). The telescopic box 22 is a box structure with multiple outer surfaces, and the outer surface of the telescopic box 22 can be connected to the drive rod group 23 to change the state of the drive rod group 23. The drive rod group 23 can be any connecting rod structure, such as a three-bar structure, a four-bar structure, a thrust rod structure, etc. The telescopic box 22 drives the change of the structure of the drive rod group 23, thereby providing transmission force and transmission space for the change of the relative position of the first end 131 and the second end 132 of the blade 13.

[0062] It should be noted that when the starting rod 21 moves along the first direction (Z) toward the direction close to the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blades 13 are inclined in the direction of extension of the second end 132 toward the first end 131, that is, the cavity formed by the multiple blades 13 is a cavity structure that gradually shrinks from the top to the bottom, which is more conducive to generating a shear layer airflow along the first direction (Z) toward the side away from the bottom of the fixing frame 11. On the contrary, when the starting rod 21 moves along the first direction (Z) toward the direction away from the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, so that the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blades 13 are inclined in the direction of extension from the first end 131 to the second end 132, that is, the cavity formed by the multiple blades 13 is a cavity structure that gradually shrinks from the bottom to the top, which is more conducive to generating a shear layer airflow along the first direction (Z) toward the side close to the bottom of the fixing frame 11.

[0063] It should also be noted that in the embodiment of the present invention, the X-axis direction and the Z-axis direction intersect, the X-axis direction and the Y-axis direction intersect, and the Y-axis direction and the Z-axis direction intersect. For ease of explanation, the first direction is defined as the Z-axis direction (that is, the extension direction of the start rod 21 in this application), the second direction is defined as the X-axis direction, and the third direction is defined as the Y-axis direction. It should be further noted that the definition of vertical in the specification should be understood as vertical within a 90-degree fluctuation of 10%, that is, the angle between the first direction and the second direction should be understood as vertical if it is between 80 and 90 degrees, the angle between the first direction and the third direction should be understood as vertical if it is between 80 and 90 degrees, and the angle between the second direction and the third direction should be understood as vertical if it is between 80 and 90 degrees.

[0064] In some embodiments, the fixing frame 11 includes at least two sets of oppositely disposed side walls, and a blade 13 is movably connected to each side wall.

[0065] In this embodiment, since the fixed frame 11 includes at least two sets of oppositely disposed side walls, each side wall being movably connected to a blade 13, each side wall can be movably connected to a blade 13, which further facilitates the symmetrical arrangement of multiple blades 13 along the first axis. It should be noted that the number of side walls included in the fixed frame 11 is consistent with the number of blades 13. For example, when the fixed frame 11 is a rectangular cylindrical structure, each side surface is movably connected to a blade 13, that is, the rotating assembly 1 includes four blades 13. When the fixed frame 11 is a hexagonal cylindrical structure, each side surface is movably connected to a blade 13, that is, the rotating assembly 1 includes six blades 13.

[0066] Furthermore, regarding the connection between the fixing frame 11 and the blade 13, in some embodiments, a rotation groove 111 and a rotation hole 112 are opened on each side wall, the rotation groove 111 is an arc-shaped through groove, and the rotation groove 111 is concave toward the rotation hole 112; the rotation shaft 12 includes a first rotation shaft 121 and a second rotation shaft 122, one end of the first rotation shaft 121 is fixedly connected to the first end 131 of the blade 13, the other end of the first rotation shaft 121 passes through the driving rod group 23 and is hinged in the rotation hole 112, and one end of the second rotation shaft 122 is fixedly connected to the first end 131 of the blade 13. It is fixedly connected to the first end 131 of the blade 13, and the other end of the second rotating shaft 122 passes through the driving rod group 23 and is hinged in the rotating groove 111; in the first air outlet state, the second rotating shaft 122 is at the first position of the rotating groove 111, and in the second air outlet state, the second rotating shaft 122 is at the second position of the rotating groove 111, wherein the first position is the direction of the rotating groove 111 away from the starting rod 21 in the first direction (Z), and the second position is the direction of the rotating groove 111 close to the starting rod 21 in the first direction (Z).

[0067] In this embodiment, the rotation groove 111 is an arc-shaped through-groove structure. That is, the orthographic projection of the rotation groove 111 on the plane formed by the first direction (Z) and the second direction (X) is an arc-shaped, or the orthographic projection of the rotation groove 111 on the plane formed by the first direction (Z) and the third direction (Y) is an arc-shaped. The rotation groove 111 is concave toward the rotation hole 112, that is, the center of the rotation groove 111 is located on the side closest to the rotation hole 112. Since the rotating shaft 12 includes a first rotating shaft 121 and a second rotating shaft 122, one end of the first rotating shaft 121 is fixedly connected to the first end 131 of the blade 13, and the other end of the first rotating shaft 121 passes through the driving rod group 23 and is hinged in the rotating hole 112, one end of the second rotating shaft 122 is fixedly connected to the first end 131 of the blade 13, and the other end of the second rotating shaft 122 passes through the driving rod group 23 and is hinged in the rotating groove 111. Therefore, in the first air outlet state, the second rotating shaft 122 is in the first position of the rotating groove 111, so that the second rotating shaft 122 deflects relative to the first rotating shaft 121 toward the direction close to the top of the telescopic box 22, thereby driving the blade 13 to deflect, and finally making the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blade 13 is inclined in the direction of extension of the second end 132 toward the first end 131. On the contrary, in the second air outlet state, the second rotating shaft 122 is at the second position of the rotating groove 111, so that the second rotating shaft 122 deflects relative to the first rotating shaft 121 in the direction away from the top of the telescopic box 22, thereby driving the blade 13 to deflect, and finally making the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blade 13 is inclined in the direction of extension of the first end 131 toward the second end 132.

[0068] Regarding the specific structure of the drive rod group 23, in some embodiments, the drive rod group 23 includes a first connecting rod structure 231 and a second connecting rod structure 232, the number of the first connecting rod structures 231 and the number of the second connecting rod structures are consistent, and the number of the first connecting rod structures 231 and the number of the blades 13 are consistent; one end of the first connecting rod structure 231 in the first direction (Z) is hinged to the telescopic box 22, and the other end of the first connecting rod structure 231 in the first direction (Z) is hinged to the second connecting rod structure, and each blade 13 is hinged to the first rotating shaft 121, the second rotating shaft 122 and the second connecting rod structure.

[0069] In this embodiment, since one end of the first connecting rod structure 231 in the first direction (Z) is hinged to the telescopic box 22, and the other end of the first connecting rod structure 231 in the first direction (Z) is hinged to the second connecting rod structure, each blade 13 is hinged to the second connecting rod structure through the first rotating shaft 121, the second rotating shaft 122, and the second connecting rod structure. Therefore, the telescopic box 22 can be driven to move along the first direction (Z) by the starting rod 21, so that the telescopic box 22 drives the transmission of force between the first connecting rod structure 231 and the second connecting rod structure, and finally converted into a change in the relative position of the first end 131 and the second end 132 of the blade 13. In this way, the first connecting rod structure 231 and the second connecting rod structure are conveniently provided with transmission force and transmission space for the change in the relative position of the first end 131 and the second end 132 of the blade 13.

[0070] Regarding the specific forms of the first link structure 231 and the second link structure 232, in some embodiments, the second link structure includes a first link arm 2321 and a second link arm 2322 that are arranged to intersect each other, and a first hinge hole 23211 is respectively provided at both ends of the first link arm 2321, and a second hinge hole 23221 is respectively provided at both ends of the second link arm 2322, and a third hinge hole 23222 is provided at the intersection of the first link arm 2321 and the second link arm 2322, wherein the first hinge hole 23211 and the second hinge hole 23221 are in two positions opposite to each other in an oblique upward direction; the end of the first link structure 231 is hinged in the first hinge hole 23211, the first rotating shaft 121 is hinged in the third hinge hole 23222, and the second rotating shaft 122 is hinged in the second hinge hole 23221.

[0071] In this embodiment, an X-shaped connecting rod structure can be formed between the first link arm 2321 and the second link arm 2322. Through the hinge between the first connecting rod structure 231 and the second connecting rod structure, a four-bar drive structure is formed between the first connecting rod structure 231 and the second connecting rod structure 232. Since the motion pair of the four-bar drive structure is a low pair, the first connecting rod structure 231 and the second connecting rod structure 232 can convert the linear motion of the starting rod 21 into the rotational motion of the blade 13 while stably providing a stable force for the deflection of the first end 131 and the second end 132 of the blade 13 at different relative positions. The entire transmission process is hinged, which reduces friction and is conducive to the long-term operation of the drive rod group 23.

[0072] Furthermore, in some embodiments, a fourth hinge hole 2311 is provided at one end of the first connecting rod structure 231 in the first direction (Z), and a first hinge column 2312 is provided at the other end of the first connecting rod structure 231 in the first direction (Z); the telescopic box 22 includes at least two groups of oppositely arranged outer walls, each outer wall is provided with a first and second hinge column 221, the first hinge column 2312 is hinged in the fourth hinge hole 2311, and the second hinge column 221 is hinged in the first hinge hole 23211.

[0073] In this embodiment, since the first connecting rod structure 231 is provided with a fourth hinge hole 2311 at one end in the first direction (Z), the first connecting rod structure 231 is provided with a first hinge column 2312 at the other end in the first direction (Z), the telescopic box 22 includes at least two groups of oppositely arranged outer walls, each outer wall is provided with a second hinge column 221, the first hinge column 2312 is hinged in the fourth hinge hole 2311, and the second hinge column 221 is hinged in the first hinge hole 23211, so that the telescopic box 22 and the driving rod group 23 are hinged, which can not only convert the linear movement of the starting rod 21 into the rotational movement of the blade 13, but also reduce the friction during the movement process and reduce the wear during the entire movement process.

[0074] Regarding the connection between the telescopic box 22 and the starting rod 21 , in some embodiments, a movable hole is opened at the bottom of the telescopic box 22 , and the starting rod 21 is movably connected to the telescopic box 22 through the movable hole.

[0075] In this embodiment, the aperture of the movable hole is larger than the rod diameter of the starting rod 21, which facilitates the starting rod 21 to pass through the movable hole and connect with the telescopic box 22, so that the movement of the starting rod 21 can drive the telescopic box 22 to move synchronously, and can provide a margin for the movement between the starting rod 21 and the telescopic box 22.

[0076] Furthermore, in some embodiments, the starting lever 21 includes a first limiting protrusion 211 and a second limiting protrusion 212. The first limiting protrusion 211 and the second limiting protrusion 212 are spaced apart along the first direction (Z). The first limiting protrusion 211 is located at the end of the starting lever 21 closer to the driving lever assembly 23, and the second limiting protrusion 212 is located at the end of the starting lever 21 farther from the driving lever assembly 23. In the first air outlet state, the second limiting protrusion 212 abuts against the first opening of the movable hole. In the second air outlet state, the first limiting protrusion 211 abuts against the second opening of the movable hole. The first opening and the second opening are opposite openings of the movable hole in the first direction (Z), with the first opening farther from the driving lever assembly 23 and the second opening closer to the driving lever assembly 23.

[0077] In this embodiment, in the first air outlet state, the starting rod 21 moves along the first direction (Z) toward the direction close to the multiple blades 13, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z). After the blade 13 is tilted in the direction in which the second end 132 extends toward the first end 131, the second limiting protrusion 212 abuts against the first orifice of the movable hole, thereby preventing the starting rod 21 from driving the telescopic box 22 to move out of range in the first direction (Z) toward the direction close to the multiple blades 13, so as to ensure the stability of the adjustment of the multiple blades in the first air outlet state. On the contrary, in the second air outlet state, the starting rod 21 moves along the first direction (Z) toward the direction away from the multiple blades 13, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z). After the blade 13 is tilted in the direction of extension from the first end 131 to the second end 132, the first limiting protrusion 211 abuts against the second orifice of the movable hole, thereby preventing the starting rod 21 from driving the telescopic box 22 to move out of range in the first direction (Z) toward the direction away from the multiple blades 13, so as to ensure the stability of the adjustment of the multiple blades in the first air outlet state, so as to achieve the movement of the entire axial flow fan within the range.

[0078] In some embodiments, the axial flow fan further includes a bracket 3 , the bracket 3 includes a receiving cavity, and the rotating assembly 1 and the transmission assembly 2 are both received in the receiving cavity.

[0079] In this embodiment, the bracket 3 may be a cylindrical shell structure, a square shell structure, or a shell structure of other shapes, which is not limited in this embodiment of the utility model. Because the bracket 3 includes a housing cavity, and the rotating assembly 1 and the transmission assembly 2 are both accommodated in the housing cavity, the bracket 3 can form a shell structure that protects the rotating assembly 1 and the transmission assembly 2. While ensuring the stable movement of the rotating assembly 1 and the transmission assembly 2, it is also beneficial to protect the rotating assembly 1 and the transmission assembly 2 from external damage, thereby extending the service life of the axial flow fan.

[0080] In some embodiments, the axial flow fan also includes a drive assembly 4; the drive assembly 4 includes a drive motor 41 and a mounting bracket 42, and the drive motor 41 is driven and connected to the second end 132 of the motor through the mounting bracket 42; the drive motor 41 drives the multiple blades 13 to rotate in a first rotation direction and a second rotation direction, wherein the first rotation direction and the second rotation direction are two opposite directions; when the drive motor 41 drives the multiple blades 13 in the first rotation direction, the axial flow fan is in a first air outlet state, and when the drive motor 41 drives the multiple blades 13 in the second rotation direction, the axial flow fan is in a second air outlet state.

[0081] In this embodiment, the first rotation direction can be understood as a clockwise rotation direction, and the second rotation direction can be understood as a counterclockwise rotation direction. The clockwise and counterclockwise rotation directions are the rotation directions of the axial flow fan when viewed from above. Thus, when the drive motor 41 rotates in the first rotation direction, i.e., in the clockwise rotation direction, the axial flow fan is adjusted to the first air outlet state, i.e., the distance between the first end 131 of the blade 13 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 of the blade 13 and the bottom of the fixing frame 11 in the first direction (Z). The blade 13 is tilted in the direction in which the second end 132 extends toward the first end 131, thereby adapting to the shear layer airflow generated in the first direction (Z) toward the side away from the bottom of the fixing frame 11, thereby forming a stable gas flow in the first direction (Z) toward the side away from the bottom of the fixing frame 11. Conversely, when the drive motor 41 rotates in the second direction (i.e., counterclockwise), the axial flow fan is adjusted to the second air outlet state, i.e., the distance between the first end 131 of the blade 13 and the bottom of the mounting frame 11 in the first direction (Z) is greater than the distance between the second end 132 of the blade 13 and the bottom of the mounting frame 11 in the first direction (Z). This causes the blade 13 to tilt in the direction from the first end 131 to the second end 132, thereby accommodating the shear layer airflow generated in the first direction (Z) toward the bottom of the mounting frame 11, thereby forming a stable air flow in the first direction (Z) toward the bottom of the mounting frame 11. It should be noted that in the first air outlet state, since a stable air flow in the first direction (Z) is formed toward the side away from the bottom of the mounting frame 11, it can be understood as the front air outlet of the axial flow fan. In the second air outlet state, since a stable air flow in the first direction (Z) is formed toward the bottom of the mounting frame 11, it can be understood as the rear air outlet of the axial flow fan.

[0082] It can be seen from the above embodiments that in the embodiments of the present utility model, since the rotating component 1 includes a fixed frame 11, a rotating shaft 12 and a plurality of blades 13, the plurality of blades 13 are symmetrically arranged around the first axis center, the size of the first end 131 of the blade 13 in the third direction (Y) is larger than the size of the blade 13 in the third direction (Y), and the second ends 132 of the plurality of blades 13 are hinged to the fixed frame 11 through the rotating shaft 12, so that the plurality of blades 13 can be movably connected to the fixed frame 11 around the rotating shaft 12, thereby changing the relative position of the first end 131 and the second end 132 of the blade 13. Furthermore, since the transmission assembly 2 includes a starting rod 21, a telescopic box 22, and a driving rod group 23, the starting rod 21 and the telescopic box 22 are movably connected along a first direction (Z), the telescopic box 22 and the driving rod group 23 are movably connected along the first direction (Z), and the plurality of blades 13 are movably connected to the driving rod group 23 via the rotating shaft 12. Therefore, the telescopic box 22 can be driven to move along the first direction (Z) by the starting rod 21, and then the driving rod group 23 is driven to move, and the relative position of the first end 131 and the second end 132 of the blade 13 is changed by the driving rod group 23. In this way, when the starting rod 21 moves along the first direction (Z) toward the direction close to the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, and the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is smaller than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z), so that the blades 13 are inclined in the direction of extension of the second end 132 toward the first end 131, thereby adapting to the shear layer airflow generated in the first direction (Z) toward the side away from the bottom of the fixing frame 11, thereby forming a stable gas flow in the first direction (Z) toward the side away from the bottom of the fixing frame 11. When the starting rod 21 moves in the first direction (Z) away from the multiple blades 13, the telescopic box 22 drives the driving rod group 23 to move, so that the distance between the first end 131 and the bottom of the fixing frame 11 in the first direction (Z) is greater than the distance between the second end 132 and the bottom of the fixing frame 11 in the first direction (Z). The blades 13 are tilted in the direction of extension from the first end 131 to the second end 132, thereby adapting to the shear layer airflow generated in the first direction (Z) toward the side close to the bottom of the fixing frame 11, thereby forming a stable gas flow in the first direction (Z) toward the side close to the bottom of the fixing frame 11.

[0083] To sum up, through the axial flow fan provided by the embodiment of the present invention, multiple blades generate air volume along any side of the first direction (Z), and the air volume will not be attenuated, thereby achieving the purpose of reversible air discharge of a single axial flow fan. That is, in the axial flow fan provided by the embodiment of the present invention, air discharge along any side of the first direction (Z) can be achieved by simply adjusting the relative positions of the first end 131 and the second end 132 of the blade 13, effectively reducing the number of rotating components 1 required for the axial flow fan to achieve different sides in the first direction (Z), thereby saving development costs, reducing the size of the axial flow fan, and making the axial flow fan more energy-efficient.

[0084] In the second aspect, an embodiment of the present invention also provides a fan system, which includes a first air duct component, a second air duct component and an axial flow fan of any embodiment of the first aspect; the first air duct component is arranged at the top air outlet of the axial flow fan, and the second air duct component is arranged at the bottom air outlet of the axial flow fan, and the top air outlet and the bottom air outlet are two opposite air outlets of the axial flow fan in the first direction (Z).

[0085] In this embodiment, since the first air duct component is disposed at the top air outlet of the axial flow fan and the second air duct component is disposed at the bottom air outlet of the axial flow fan, the top air outlet and the bottom air outlet are two opposite air outlets of the axial flow fan in the first direction (Z). Therefore, it is convenient to control the first air duct component and the second air duct component to meet the air outlet requirements of the fan system in different directions. In addition, since the axial flow fan can achieve air outlet along any side of the first direction (Z) by simply adjusting the relative positions of the first end 131 and the second end 132 of the blade 13, the number of rotating components 1 required for the axial flow fan to achieve different sides in the first direction (Z) is effectively reduced, thereby saving the development cost of the fan system, reducing the size of the fan system, and making the fan system more energy-efficient.

[0086] Furthermore, in some embodiments, the fan system also includes a duct conversion component, and a duct conversion component is provided in each of the first duct component and the second duct component; when the axial flow fan is in the first air outlet state, the duct conversion component in the first duct component is in an open state, and the duct conversion component in the second duct component is in a closed state; when the axial flow fan is in the second air outlet state, the duct conversion component in the first duct component is in a closed state, and the duct conversion component in the second duct component is in an open state.

[0087] In the embodiment, when the axial flow fan is in the first air outlet state, due to the formation of a stable gas flow in the first direction (Z) toward the side away from the bottom of the fixed frame 11, that is, the axial flow fan discharges air from the front, so that the air duct conversion component in the first air duct component is in an open state, and the air duct conversion component in the second air duct component is in a closed state, which facilitates the fan system to discharge air through the first air duct component, that is, the fan system discharges air from the top. On the contrary, when the axial flow fan is in the second air outlet state, due to the formation of a stable gas flow in the first direction (Z) toward the side close to the bottom of the fixed frame 11, that is, the axial flow fan discharges air from the back, so that the air duct conversion component in the first air duct component is in a closed state, and the air duct conversion component in the second air duct component is in an open state, which facilitates the fan system to discharge air through the second air duct component, that is, the fan system discharges air from the bottom. In summary, the fan system can realize a variety of different types of air outlet modes, improve the performance of the fan system, and enhance the user experience.

[0088] Furthermore, in some embodiments, the air duct conversion assembly is a baffle structure, and a baffle structure is hingedly connected to the first air duct component and the second air duct component.

[0089] In this embodiment, since the air duct conversion assembly is a baffle structure, a baffle structure is hinged in the first air duct component and the second air duct component, so it is convenient to open and close the first air duct component and the second air duct component through the baffle structure. The entire air duct conversion assembly has a simple structure and is easy to control.

[0090] In a third aspect, the present invention further provides an air-conditioning device according to a new embodiment, which includes the fan system described in any embodiment of the second aspect.

[0091] It should be noted that an air conditioner may include an air inlet component, an air duct component, an evaporator component, an air outlet component, and an exterior component. The air duct component includes a fan system and an air outlet system. Because the fan system can achieve a variety of different air outlet modes, improving the fan system's performance and enhancing the user experience, the air outlet types of the air conditioner are expanded, further enhancing the product's user experience and competitiveness.

[0092] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0093] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), including a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0094] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. An axial flow fan, characterized in that: The axial flow fan includes a first direction, a second direction and a third direction intersecting each other, including: A rotating assembly, the rotating assembly comprising a fixed frame, a rotating shaft, and a plurality of blades, the plurality of blades being symmetrically arranged around a first axis, the first ends of the blades being larger than the second ends of the blades in the third direction, the second ends of the plurality of blades being hinged to the fixed frame via the rotating shaft, wherein the first end is an end of the blade away from the rotating shaft, the second end is an end of the blade close to the rotating shaft, and the first axis is the center point of a figure formed by the plurality of blades; a transmission assembly, the transmission assembly comprising a starting rod, a telescopic box, and a driving rod group, the starting rod and the telescopic box being movably connected along the first direction, the telescopic box and the driving rod group being movably connected along the first direction, and the plurality of blades being movably connected to the driving rod group via the rotating shaft; When the starting rod moves in the first direction toward the direction close to the plurality of blades, the telescopic box drives the driving rod group to move, and the distance between the first end and the bottom of the fixing frame in the first direction is smaller than the distance between the second end and the bottom of the fixing frame in the first direction, and the axial flow fan is in the first air outlet state; When the starting rod moves along the first direction away from the multiple blades, the telescopic box drives the driving rod group to move, the distance between the first end and the bottom of the fixing frame in the first direction is greater than the distance between the second end and the bottom of the fixing frame in the first direction, and the axial flow fan is in the second air outlet state.

2. The axial flow fan according to claim 1, characterized in that The fixing frame includes at least two groups of side walls that are arranged opposite to each other, and each of the side walls is movably connected to one of the blades.

3. The axial flow fan according to claim 2, characterized in that: A rotation groove and a rotation hole are formed on each of the side walls, wherein the rotation groove is an arc-shaped through groove and is concave toward the rotation hole; The rotating shaft includes a first rotating shaft and a second rotating shaft, one end of the first rotating shaft is fixedly connected to the first end of the blade, the other end of the first rotating shaft passes through the driving rod group and is hinged in the rotating hole, one end of the second rotating shaft is fixedly connected to the first end of the blade, the other end of the second rotating shaft passes through the driving rod group and is hinged in the rotating groove; In the first air outlet state, the second rotating shaft is at the first position of the rotating slot, and in the second air outlet state, the second rotating shaft is at the second position of the rotating slot, wherein the first position is the direction of the rotating slot away from the starting rod in the first direction, and the second position is the direction of the rotating slot close to the starting rod in the first direction.

4. The axial flow fan according to claim 3, characterized in that The driving rod group includes a first connecting rod structure and a second connecting rod structure, the number of the first connecting rod structures is consistent with the number of the second connecting rod structures, and the number of the first connecting rod structures is consistent with the number of the blades; One end of the first connecting rod structure in the first direction is hinged to the telescopic box, and the other end of the first connecting rod structure in the first direction is hinged to the second connecting rod structure. Each of the blades is hinged to the second connecting rod structure through the first rotating shaft and the second rotating shaft.

5. The axial flow fan according to claim 4, characterized in that: The second connecting rod structure includes a first lever arm and a second lever arm arranged to intersect each other, wherein both ends of the first lever arm are respectively provided with a first hinge hole, and both ends of the second lever arm are respectively provided with a second hinge hole, and a third hinge hole is provided at the intersection of the first lever arm and the second lever arm, wherein the first hinge hole and the second hinge hole are located at two positions opposite to each other in an oblique upward direction; The end of the first connecting rod structure is hinged in the first hinge hole, the first rotating shaft is hinged in the third hinge hole, and the second rotating shaft is hinged in the second hinge hole.

6. The axial flow fan according to claim 5, characterized in that A fourth hinge hole is formed at one end of the first connecting rod structure in the first direction, and a first hinge column is formed at the other end of the first connecting rod structure in the first direction; The telescopic box includes at least two groups of outer walls arranged opposite to each other, each outer wall is provided with a second hinge column, the first hinge column is hinged in the fourth hinge hole, and the second hinge column is hinged in the first hinge hole.

7. The axial flow fan according to claim 1, characterized in that A movable hole is provided at the bottom of the telescopic box, and the starting rod is movably connected to the telescopic box through the movable hole.

8. The axial flow fan according to claim 7, characterized in that: The starting rod includes a first limiting convex ring and a second limiting convex ring; The first limiting protrusion ring and the second limiting protrusion ring are spaced apart along the first direction, the first limiting protrusion ring is located at an end of the starting rod close to the driving rod group, and the second limiting protrusion ring is located at an end of the starting rod away from the driving rod group; In the first air outlet state, the second limiting protrusion abuts against the first orifice of the movable hole. In the second air outlet state, the first limiting protrusion abuts against the second orifice of the movable hole. The first orifice and the second orifice are two opposite orifices of the movable hole in the first direction. The first orifice is far away from the driving rod group, and the second orifice is close to the driving rod group.

9. The axial flow fan according to claim 1, characterized in that: The axial flow fan further includes a bracket, the bracket includes a receiving cavity, and the rotating assembly and the transmission assembly are both received in the receiving cavity.

10. The axial flow fan according to claim 1, characterized in that The axial flow fan further includes a drive assembly; The driving assembly includes a driving motor and a mounting bracket, wherein the driving motor is drivingly connected to the second end of the motor via the mounting bracket; The driving motor drives the plurality of blades to rotate in a first rotation direction and a second rotation direction, wherein the first rotation direction and the second rotation direction are opposite directions; When the drive motor drives the plurality of blades to rotate in the first direction, the axial flow fan is in a first air outlet state; when the drive motor drives the plurality of blades to rotate in the second direction, the axial flow fan is in a second air outlet state.

11. A fan system, characterized in that: The fan system comprises a first air duct component, a second air duct component and the axial flow fan according to any one of claims 1 to 10; The first air duct component is arranged at the top air outlet of the axial flow fan, and the second air duct component is arranged at the bottom air outlet of the axial flow fan. The top air outlet and the bottom air outlet are two opposite air outlets of the axial flow fan in the first direction.

12. The fan system according to claim 11, characterized in that: The fan system further includes an air duct conversion component, and each of the first air duct component and the second air duct component is provided with one of the air duct conversion components; When the axial flow fan is in the first air outlet state, the air duct conversion component in the first air duct component is in an open state, and the air duct conversion component in the second air duct component is in a closed state. When the axial flow fan is in the second air outlet state, the air duct conversion component in the first air duct component is in a closed state, and the air duct conversion component in the second air duct component is in an open state.

13. The fan system according to claim 12, characterized in that: The air duct conversion assembly is a baffle structure, and one of the baffle structures is hingedly connected to each of the first air duct component and the second air duct component.

14. An air conditioning device, characterized in that: The air conditioning device comprises the fan system according to any one of claims 11 to 13.

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