Fan

Abstract

The utility model discloses a fan, relates to fan equipment technical field, the fan includes air-out shell, fixed part, fan subassembly and support, air-out cavity is formed in the air-out shell, the both ends of air-out shell are respectively provided with air-in hole and air-out hole that are communicated with air-out cavity, the two opposite outer side wall of air-out shell is provided with avoiding groove; the fixing piece is arranged in the air outlet cavity, at least two supporting guide vanes are arranged on the periphery of the fixing piece in a surrounding mode, and the supporting guide vanes are connected with the inner wall of the air outlet cavity; the fan assembly is arranged in the air outlet cavity and connected to the fixing piece. The support is provided with a steering mechanism, the steering mechanism is provided with two supporting arms which are oppositely arranged in a spaced mode, the air outlet shell is arranged between the two supporting arms, the two supporting arms are rotationally connected with the two opposite outer side walls of the air outlet shell respectively, and at least part of the structure is contained in the receding groove. According to the technical scheme provided by the utility model, the structural exposure of the fan on the air outlet shell is reduced, and the overall attractiveness and the storage convenience of the fan are better improved.

Description

Technical Field

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

[0002] In existing fans, a shaking and steering mechanism is usually used to connect the fan housing, so that the shaking and steering mechanism can drive the fan housing to rotate in the up and down direction and horizontal direction, so as to achieve a wide range of blowing effect of the fan. The shaking and steering mechanism is mostly connected to the opposite sides of the fan housing by a steering arm, and a driving device such as a motor is used to drive the fan housing to swing up and down on the steering arm, so as to achieve the up and down sweeping of the fan.

[0003] However, in existing fans, the steering arms are mostly directly protruded and connected to the outer wall of the fan housing to support and drive the fan housing to rotate, resulting in poor overall aesthetics of the fan; and when storing and packaging, the storage structure needs to avoid the protruding steering arm, which reduces the convenience and practicality of storing and packaging the fan. Utility Model Content

[0004] The main purpose of the utility model is to provide a fan, aiming to improve the structural design of the fan, reduce the exposure of the fan structure on the air outlet housing, and better improve the overall aesthetics and storage convenience of the fan.

[0005] To achieve the above-mentioned objectives, the fan proposed by the utility model comprises an air outlet shell, a fixing part, a fan assembly and a bracket, wherein an air outlet cavity is formed in the air outlet shell, and two ends of the air outlet shell are respectively provided with an air inlet hole and an air outlet hole communicating with the air outlet cavity, and two opposite outer side walls of the air outlet shell are provided with avoidance grooves; the fixing part is arranged in the air outlet cavity, and at least two supporting guide vanes are arranged around the outer periphery of the fixing part, and the supporting guide vanes are connected to the inner wall of the air outlet cavity and are arranged close to the air outlet hole; the fan assembly is arranged in the air outlet cavity and connected to the fixing part, and the fan assembly is arranged between the supporting guide vanes and the air inlet hole; the bracket is provided with a steering mechanism, and the steering mechanism is provided with two supporting arms arranged relatively spaced apart, and the air outlet shell is arranged between the two supporting arms, and the two supporting arms are respectively rotatably connected to the two opposite outer side walls of the air outlet shell, and at least part of the structure is accommodated in the avoidance groove.

[0006] In one embodiment, an accommodating space is formed in the air outlet housing, and the fan further includes a control system and a power supply system, and the control system and / or the power supply system are arranged in the accommodating space.

[0007] In one embodiment, at least one of the supporting guide vanes is provided with a wire passing groove, and the inner wall of the air outlet housing is provided with a wire passing hole, and the wire passing hole connects the wire passing groove and the accommodating space.

[0008] In one embodiment, an installation space is provided on a side of the fixing member close to the air outlet, and the fan further includes a control system and a power supply system, and the control system and / or the power supply system are arranged in the installation space.

[0009] In one embodiment, the bracket is also provided with a supporting body, the supporting body includes a column and a chassis, the chassis is provided with a storage cavity, the column has a first state and a second state, the column is accommodated in the storage cavity when in the first state, and is connected to the steering mechanism and the chassis when in the second state, and the chassis is detachably connected to one end of the air outlet shell.

[0010] In one embodiment, the steering mechanism includes a fixed seat, a first steering device and a second steering device, and the support arms are respectively provided on opposite sides of the fixed seat; the first steering device is installed on the support arm and connected to the air outlet shell, and the first steering device drives the air outlet shell to rotate along the first direction; the second steering device is connected to the fixed seat and connected to the column, and the second steering device drives the fixed seat to rotate along the second direction.

[0011] In one embodiment, a pressure reducing through hole is provided in the fixing member, the pressure reducing through hole penetrates the fixing member, the fan assembly is sleeved on the outer periphery of the fixing member, and the air inlet and the air outlet are arranged around the pressure reducing through hole.

[0012] In one embodiment, the fan assembly includes a fan body and fan blades, the fan body includes a stator and an outer rotor, the stator is provided with a plug-in through hole, at least a portion of the structure of the fixing member is passed through the plug-in through hole and connected to fix the stator, the outer rotor is rotatably mounted on the outer periphery of the stator; the fan blades are connected to the outer rotor, and the fan body drives the fan blades to rotate.

[0013] In one embodiment, the stator includes a hollow shaft and a stator core, the hollow shaft is provided with the insertion through hole, the hollow shaft is sleeved on the outer periphery of the fixing member, the hollow shaft includes a connecting section and a fixing section, and the stator core is connected to the outer periphery of the fixing section. The outer rotor is sleeved on the outer periphery of the hollow shaft and arranged around the stator core, and the fan also includes a bearing, the bearing is arranged between the connecting section and the outer rotor, and connects the outer periphery of the connecting section and the inner wall of the outer rotor, so that the outer rotor rotates relative to the hollow shaft.

[0014] In one embodiment, the fan blade includes an inner hub, an outer hub, a first blade and a second blade, the inner hub is sleeved on the outer rotor; the outer hub is coaxially arranged with the inner hub and sleeved on the outer circumference of the inner hub, and an air inlet channel is formed between the outer hub and the inner hub; the first blade is connected to the outer circumference of the outer hub; the second blade is arranged in the air inlet channel and connects the outer hub and the inner hub.

[0015] In one embodiment, the fixing member includes a mounting cylinder and a guide plate, the mounting cylinder is provided with the pressure reducing through hole, and the fan assembly is sleeved on the outer periphery of the mounting cylinder; the guide plate is connected to the outer periphery of the mounting cylinder and is provided at one end of the mounting cylinder facing the air outlet, the supporting guide vane is connected to the guide plate and the inner wall of the air outlet cavity, and an arc-shaped guide surface is formed on the side of the guide plate facing the fan assembly.

[0016] In one embodiment, the air outlet housing is provided with an air inlet grille, which is connected to one end of the air outlet housing and covers the air inlet hole. The air outlet housing is provided with an air outlet grille, which is connected to one end of the air outlet housing and covers the air outlet hole. And / or, the air inlet grille is detachably connected to the air outlet housing. And / or, the air outlet grille is detachably connected to the air outlet housing.

[0017] The technical solution of the utility model is to set an avoidance groove on the outer wall of the air outlet housing, and to accommodate at least part of the structure of the support arm of the steering mechanism in the avoidance groove to connect and rotate the air outlet housing, so that the support arm can form a whole with the air outlet housing, which can better reduce the exposure of the structure on the air outlet housing when it is stored daily or when there is no need to swing the wind, which is conducive to better improving the overall structural aesthetics and storage convenience of the fan. At the same time, by using the coordination balance between the fan assembly and the support guide vane in the air outlet cavity, the air outlet housing can adopt a structural setting with a smaller thickness, which is conducive to better reducing the storage and packaging volume of the fan, and further improving the practicality and reliability of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a fan according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1 A structural exploded view of a fan embodiment of the present invention;

[0021] Figure 3 for Figure 1 A schematic cross-sectional structural diagram of a fan embodiment of the present invention at a fan assembly;

[0022] Figure 4 for Figure 1 A cross-sectional view of a fan embodiment;

[0023] Figure 5 for Figure 1 A flow diagram of the outlet airflow of a fan of an embodiment;

[0024] Figure 6 for Figure 1 A schematic cross-sectional view of an embodiment of a fan assembly of a fan

[0025] Figure 7 for Figure 1 An exploded view of a fan embodiment of the present invention in a stored state.

[0026] Description of Figure Numbers:

[0027] 100, fan; 10, air outlet housing; 111, air outlet cavity; 113, accommodation space; 131, avoidance slot; 15, air inlet grille; 17, air outlet grille; 30, fixing piece; 31, mounting cylinder; 311, pressure relief hole; 33, guide plate; 35, support guide vane; 50, fan assembly; 51, fan body; 511, stator; 5111, hollow shaft; 5113, stator core; 513, outer rotor; 515, shaft Bearing; 53, fan blades; 531, inner hub; 5311, air inlet channel; 533, outer hub; 535, first blade; 537, second blade; 70, bracket; 71, supporting body; 711, column; 713, chassis; 7131, storage cavity; 73, steering structure; 731, fixing seat; 7311, supporting arm; 733, first steering device; 735, second steering device; 80, control system; 90, energy supply system.

[0028] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0032] In existing fans, a shaking head and steering mechanism can usually be used to connect the fan housing, so that the shaking head and steering mechanism can drive the fan housing to rotate in the up and down directions and horizontal directions, thereby achieving a wide range of blowing effects of the fan. The shaking head and steering mechanism mostly uses a steering arm to connect to the opposite sides of the fan housing, and uses a motor or other driving device to drive the fan housing to swing up and down on the steering arm, thereby achieving the fan's up and down wind sweeping. However, in existing fans, the steering arm is mostly directly protruding and connected to the outer wall of the fan housing to support and drive the fan housing to rotate, resulting in poor overall aesthetics of the fan; and when storing and packaging, the storage structure needs to avoid the protruding steering arm, which reduces the convenience and practicality of the fan when storing and packaging. In response to the above problems, the utility model proposes a fan 100.

[0033] See also Figures 1 to 7In one embodiment of the utility model, the fan 100 includes an air outlet housing 10, a fixing member 30, a fan assembly 50 and a bracket 70. An air outlet cavity 111 is formed in the air outlet housing 10. An air inlet hole and an air outlet hole connected to the air outlet cavity 111 are respectively provided at two ends of the air outlet housing 10. A avoidance groove 131 is provided on two opposite outer side walls of the air outlet housing 10. The fixing member 30 is arranged in the air outlet cavity 111. At least two support guide vanes 35 are arranged around the outer periphery of the fixing member 30. The support guide vanes 35 are connected to the air outlet cavity 111. The inner wall of the cavity 111 is arranged near the air outlet; the fan assembly 50 is arranged in the air outlet cavity 111 and connected to the fixing member 30, and the fan assembly 50 is arranged between the support guide vane 35 and the air inlet; the bracket 70 is provided with a steering mechanism, and the steering mechanism is provided with two support arms 7311 arranged relatively spaced apart, and the air outlet shell 10 is arranged between the two support arms 7311, and the two support arms 7311 are respectively rotatably connected to the two opposite outer side walls of the air outlet shell 10, and at least part of the structure is accommodated in the avoidance groove 131.

[0034] It is understandable that the fan assembly 50 can be connected and installed on the fixing member 30 by fasteners such as bolts or buckles. By driving the fan blades 53 to rotate by the fan assembly 50, the fan assembly 50 can disturb the air entering the air outlet cavity 111 through the air inlet hole to form an airflow, and the airflow is blown out from the air outlet hole at a certain wind speed and air volume, so as to achieve a stable blowing effect of the fan 100. The fixing member 30 can be a structure such as a shaft body or a mounting plate, so that the fan assembly 50 can be sleeved on the fixing member 30 in the form of an outer rotor 513 fan, or the fan assembly 50 can be connected and fixed on the mounting plate in the form of an inner rotor fan, so as to ensure the connection stability of the fan assembly 50.

[0035] By arranging avoidance grooves 131 on two opposite outer walls of the air outlet shell 10, when the steering mechanism of the bracket 70 is connected to the air outlet shell 10 by using the support arm 7311, at least a part of the structure of the support arm 7311 can be accommodated in the avoidance groove 131 to connect with the air outlet shell 10. The avoidance groove 131 is open on the side facing the air inlet to avoid the relative rotation of the support arm 7311 and the air outlet shell 10, so that the support arm 7311 can stably drive the air outlet shell 10 in the up and down directions, so that the support arm 7311 can have a storage state accommodated in the avoidance groove 131 and a swinging drive state of swinging out of the avoidance groove 131. Among them, the overall size of the avoidance groove 131 can be set to correspond to the structural size of the support arm 7311, so that the support arm 7311 can better form an integral structure with the air outlet housing 10 when accommodated in the avoidance groove 131, effectively reducing the exposure of the structure on the air outlet housing 10, reducing the consideration of avoiding the raised structure on the air outlet housing 10 when the fan 100 is stored and packed, and improving the convenience of storage and packing of the fan 100. At the same time, the support arm 7311 is accommodated in the avoidance groove 131 when there is no need to swing the wind or store it, which can well reduce the exposed structure on the air outlet structure, which is conducive to better improving the overall aesthetics of the fan 100.

[0036] In addition, the fixing member 30 can set the fan assembly 50 at a position where the center of the air outlet cavity 111 is biased towards the air inlet, and the supporting guide vane 35 that supports and connects the fixing member 30 and the air outlet shell 10 can be set at a position close to the air outlet, so that the air outlet shell 10 can adopt a structural setting with a thickness slightly larger than the overall thickness of the fan assembly 50. At this time, under the balancing action of the fan assembly 50 and the supporting guide vane 35, the center of gravity of the air outlet shell 10 can be set as close as possible to the thickness center line of the air outlet shell 10, so that the support arm 7311 can be better connected to the center position of the outer wall of the air outlet shell 10 to stably support and rotate the air outlet shell 10, so that the air outlet shell 10 can adopt a structural setting with a smaller thickness, which is beneficial to further reduce the overall volume of the fan 100 when it is stored and packed, and further improve the practicality and reliability of the fan 100.

[0037] The technical solution of the utility model is to set a avoidance groove 131 on the outer wall of the air outlet housing 10, and at least part of the structure of the support arm 7311 of the steering mechanism is accommodated in the avoidance groove 131 to connect and rotate the air outlet housing 10, so that the support arm 7311 can form a whole with the air outlet housing 10, which can better reduce the exposure of the structure on the air outlet housing 10 when it is stored daily or when there is no need to swing the wind, which is conducive to better improving the overall structural aesthetics and storage convenience of the fan 100. At the same time, by using the coordination balance between the fan assembly 50 and the support guide vane 35 in the air outlet cavity 111, the air outlet housing 10 can adopt a structural setting with a smaller thickness, which is conducive to better reducing the storage and packaging volume of the fan 100, and further improving the practicality and reliability of the fan 100.

[0038] See also Figure 3 and Figure 4 In an embodiment of the utility model, an accommodating space 113 is formed in the air outlet housing 10 , and the fan 100 further includes a control system 80 and a power supply system 90 , and the control system 80 and / or the power supply system 90 are disposed in the accommodating space 113 .

[0039] In this embodiment, the air outlet housing 10 is arranged in the form of a double-layer housing structure, so that a housing space 113 with a certain space size can be formed in the air outlet housing 10. At this time, the fan 100 can be installed with a control system 80 and / or an energy supply system 90 in the housing space 113. The control system 80 can be used to adjust the power of the fan assembly 50 and the steering of the steering mechanism, and the energy supply system 90 can be used to supply energy to the fan assembly 50 and the steering mechanism, etc., to ensure the stable operation of the fan 100. By arranging the control system 80 and the energy supply system 90 in the housing space 113, the overall routing of the fan 100 can be more conveniently realized in the air outlet housing 10, and the overall structural stability of the fan 100 can be better improved. Among them, the air outlet housing 10 can adopt a split structure of a front and rear housing, or a split structure of an inner and outer housing, so that the control system 80 and the energy supply system 90 can be more conveniently arranged in the housing space 113, further improving the convenience and practicality of disassembly of the fan 100.

[0040] In addition, in an embodiment of the utility model, an installation space is provided on one side of the fixing member 30 close to the air outlet, and the fan 100 further includes a control system 80 and a power supply system 90, and the control system 80 and / or the power supply system 90 are provided in the installation space.

[0041] In this embodiment, the fan 100 can be provided with an installation space on the side of the fixing member 30 facing the air outlet. At this time, the control system 80 and / or the energy supply system 90 of the fan 100 can be installed in the installation space, which is conducive to more compact installation of the various components of the fan 100 and ensures the stable operation of the fan 100. By arranging the control system 80 and / or the energy supply system 90 in the installation space, it can be effectively prevented that the airflow affects the stable operation of the electrical equipment of the fan 100. At this time, the operation interface of the control system 80 can be set on the air outlet side of the fan 100 to facilitate the user to control the fan 100, or the charging interface or disassembly port of the energy supply system 90 can be set on the air outlet side of the fan 100 to facilitate the user to replace the energy storage structure or charge the energy supply system 90, etc., further improving the practicality and reliability of the fan 100.

[0042] Among them, the fan 100 can install the control system 80 in the accommodating space 113, and install the energy supply system 90 in the installation space; or the energy supply system 90 can be installed in the accommodating space 113, and the control system 80 can be installed in the installation space; or the control system 80 and the energy supply system 90 can be installed only in the accommodating space 113; or the control system 80 and the energy supply system 90 can be installed only in the installation space; or, when the fan 100 can be provided with two sets of control systems 80 and energy supply systems 90 for control, one set of control system 80 and energy supply system 90 can be installed in the accommodating space 113, and the other set of control system 80 and energy supply system 90 can be installed in the installation space, so as to ensure the stable operation of the fan 100.

[0043] In the embodiment of the present utility model, at least one supporting guide vane 35 is provided with a wire groove, and the inner wall of the air outlet housing 10 is provided with a wire hole, and the wire hole is connected to the wire groove and the accommodating space 113 .

[0044] In this embodiment, by providing a wire groove on the support guide vane 35 and providing a wire hole on the inner wall of the air outlet housing 10, the connecting cables on the fan assembly 50 can pass through the wire groove and the wire hole into the accommodating space 113 to be connected to the control system 80 and the energy supply system 90, thereby realizing the routing of the fan assembly 50 on the air outlet housing 10. When the connecting cable passes through the wire groove, a buckle or a wire binding member can be provided in the wire groove to fix the connecting cable, so that the connecting cable of the fan assembly 50 can be stored on the support guide vane 35, avoiding the connecting cable being exposed in the air outlet cavity 111 and having a certain probability of being entangled with the fan blades 53 of the fan assembly 50, which is conducive to better ensuring the stable operation of the fan 100 and further improving the structural stability and reliability of the fan 100.

[0045] See also Figure 1 and Figure 7In an embodiment of the utility model, the bracket 70 is also provided with a supporting body 71, the supporting body 71 includes a column 711 and a chassis 713, the chassis 713 is provided with a storage cavity 7131, the column 711 has a first state and a second state, the column 711 is accommodated in the storage cavity 7131 when in the first state, and is connected to the steering mechanism and the chassis 713 when in the second state.

[0046] In this embodiment, the fan 100 can use the support body 71 to connect the support steering mechanism, so that the steering mechanism can stably drive the air outlet housing 10 to rotate in the up and down directions and the horizontal direction, so as to achieve a wide range of swinging operation of the fan 100. Among them, the support body 71 can use the column 711 and the chassis 713 to support the steering structure 73 and the air outlet housing 10, and a certain counterweight can be provided in the chassis 713, so that the air outlet housing 10 can be stably set at a certain height from the ground under the action of the column 711, so as to achieve a better blowing effect of the fan 100.

[0047] Among them, the two ends of the column 711 can be connected and fixed to the rotating mechanism and the chassis 713 respectively by means of threads or snaps, so that the column 711 can be detachably connected to the rotating mechanism and then the chassis 713 respectively. At this time, the column 711 can be a column structure set corresponding to the length size of the storage cavity 7131, or the column 711 can be formed by splicing multiple column structures set corresponding to the size of the storage cavity 7131, so that the column 711 can have a first state of being accommodated in the chassis 713 and a second state of extending and connecting the steering mechanism and the chassis 713. Furthermore, when the fan 100 is stored or boxed, the column 711 can be detached from the steering mechanism and the chassis 713 respectively, and the column 711 can be stored in the storage cavity 7131 of the chassis 713, so that the fan 100 can achieve a smaller storage volume by utilizing the storage of the column 711 on the chassis 713, which is conducive to better reducing the occupied space of the fan 100 when it is stored or boxed, and further improving the storage convenience and practicality of the fan 100.

[0048] See also Figure 7 In the embodiment of the present utility model, the chassis 713 is detachably connected to one end of the air outlet housing 10 .

[0049] In this embodiment, the fan 100 can be provided with a buckle or a slot at one end of the air outlet shell 10, and a corresponding slot or buckle can be provided on one side surface of the chassis 713, so that the air outlet shell 10 and the chassis 713 can be disassembled and assembled by utilizing the snap-fit ​​cooperation of the buckle and the slot. Furthermore, when the column 711 is in the first state and is stored in the storage cavity 7131 of the chassis 713, the chassis 713 can be snap-fitted and installed on one end of the air outlet shell 10 to realize the storage of the fan 100, which is beneficial to better improve the structural integrity of the fan 100 when it is stored and boxed, and is beneficial to avoid the loss of parts when the fan 100 is stored and boxed, and further improves the storage convenience and practicality of the fan 100.

[0050] See also Figure 3 and Figure 4 In an embodiment of the utility model, the steering mechanism includes a fixed seat 731, a first steering device 733 and a second steering device 735, and support arms 7311 are respectively provided on opposite sides of the fixed seat 731; the first steering device 733 is installed on the support arm 7311 and is connected to the air outlet housing 10, and the first steering device 733 drives the air outlet housing 10 to rotate along the first direction; the second steering device 735 is connected to the fixed seat 731 and is connected to the column 711, and the second steering device 735 drives the fixed seat 731 to rotate along the second direction.

[0051] In this embodiment, the overall height direction of the fan 100 can be defined as the first direction, and the horizontal plane direction where the fan 100 is located can be defined as the second direction. The steering mechanism can set a second steering device 735 in the fixed seat 731 to connect the column 711. The second steering device 735 can be a driving device such as a motor. Under the action of the second steering device 735, the fixed seat 731 can be driven to rotate relative to the support body 71 in the second direction, and then the steering mechanism can drive the air outlet housing 10 to rotate in the second direction to achieve the horizontal swing effect of the fan 100. By setting the first steering device 733 in the support arm 7311, the first steering device 733 can be used to connect the air outlet housing 10, and the first steering device 733 can drive the air outlet housing 10 to rotate relative to the fixed seat 731 in the first direction to achieve the up and down swing effect of the fan 100. Among them, the first steering device 733 can be arranged on only one support arm 7311, and a rotating shaft can be arranged on the other support arm 7311 to be rotatably connected to the air outlet housing 10; or the first steering device 733 can be arranged on both support arms 7311, and the two first steering devices 733 are used to synchronously drive the air outlet housing 10 to rotate.

[0052] Therefore, by setting the steering mechanism with a first steering device 733 and a second steering device 735, the steering mechanism can stably and reliably drive the air outlet shell 10 to rotate in the horizontal direction and the vertical direction, thereby realizing the all-round blowing effect of the fan 100, which is conducive to better increasing the blowing range of the fan 100, so that the fan 100 can better meet the user's usage needs, and further improve the practicality and reliability of the fan 100.

[0053] See also Figure 1 , Figure 3 and Figure 4 In an embodiment of the utility model, a pressure reducing through hole 311 is provided in the fixing member 30 , and the pressure reducing through hole 311 penetrates the fixing member 30 . The fan assembly 50 is sleeved on the outer periphery of the fixing member 30 , and the air inlet and the air outlet are arranged around the pressure reducing through hole 311 .

[0054] In this embodiment, by providing a pressure relief through hole 311 in the fixing member 30, the fixing member 30 can be provided with a hollow cylindrical structure, so that the fan 100 can use the pressure relief through hole 311 to keep the air inlet side and the air outlet side of the air outlet housing 10 connected. At this time, the fan assembly 50 can use a fan arrangement of an outer rotor 513 with a hollow main shaft of a stator 511, so that the fan assembly 50 can be sleeved on the outer periphery of the fixing member 30, and the outer rotor 513 is used to drive the fan blades 53 to rotate to achieve the air disturbance of the fan 100 to produce airflow. Furthermore, when the fan 100 is operating, the fan assembly 50 disturbs the air to enter the air outlet cavity 111 through the air inlet, and the turbulent flow generates an airflow that is blown out from the air outlet. The pressure reducing hole 311 can be used to maintain air circulation between the air inlet side and the air outlet side of the air outlet shell 10, which is beneficial to avoid forming a closed space in the central area of ​​the air outlet, reducing the negative pressure in the central area of ​​the air outlet, and preventing part of the outlet air flow from being attracted and circling in the central area of ​​the air outlet under the action of negative pressure, thereby reducing the outlet air flow loss of the fan 100, so that the fan 100 can better achieve a larger air volume outlet effect, further improving the practicality and reliability of the fan 100.

[0055] See also Figure 4 and Figure 6 In an embodiment of the utility model, the fan assembly 50 includes a fan body 51 and fan blades 53. The fan body 51 includes a stator 511 and an outer rotor 513. The stator 511 is provided with a plug-in through hole. At least part of the structure of the fixing member 30 is passed through the plug-in through hole and connected to fix the stator 511. The outer rotor 513 is rotatably sleeved on the outer periphery of the stator 511; the fan blades 53 are connected to the outer rotor 513, and the fan body 51 drives the fan blades 53 to rotate.

[0056] In this embodiment, the fan body 51 can adopt a fan structure of an outer rotor 513. By setting a plug-in through hole along the central axis of the stator 511, the size of the plug-in through hole can be set corresponding to the outer peripheral size of the fixing member 30, and then during the installation process, the stator 511 can be plugged and fixed on the outer periphery of the fixing member 30 through the plug-in through hole, so that the fan body 51 can better avoid the setting of the pressure relief through hole 311 of the fixing member 30, prevent the central area of ​​the air outlet from forming a negative pressure environment, and better improve the large air volume blowing effect of the fan 100. On the fan body 51, the stator 511 and the outer rotor 513 can be connected by a bearing 515, so that the fan body 51 can drive the outer rotor 513 to rotate relative to the stator 511 under the action of the electromagnetic effect, so that the outer rotor 513 drives the fan blades 53 to rotate to achieve the fan 100 to blow the airflow disturbance, further improving the practicality and reliability of the fan 100.

[0057] See also Figure 4 and Figure 6 In the embodiment of the utility model, the stator 511 includes a hollow shaft 5111 and a stator core 5113. The hollow shaft 5111 is provided with a plug-in through hole. The hollow shaft 5111 is sleeved on the outer periphery of the fixing member 30. The hollow shaft 5111 includes a connecting section and a fixing section. The stator core 5113 is connected to the outer periphery of the fixing section. The outer rotor 513 is sleeved on the outer periphery of the hollow shaft 5111 and is arranged around the stator core 5113. The fan also includes a bearing 515. The bearing 515 is arranged between the connecting section and the outer rotor 513 and connects the outer periphery of the connecting section and the inner wall of the outer rotor 513 so that the outer rotor 513 can rotate relative to the hollow shaft 5111.

[0058] In this embodiment, by making the hollow shaft 5111 of the stator 511 include two shaft sections, a connecting section and a fixed section, the stator core 5113 can be sleeved and installed on the fixed section. The stator core 5113 can be made of a coil or a magnetic material, so that the stator core 5113 can generate a certain magnetic field after power is applied or the stator core 5113 itself has a certain magnetism. Taking the structure of the electronic core as a coil as an example, the outer rotor 513 is sleeved on the outer periphery of the hollow shaft 5111, so that the outer rotor 513 can be arranged around the stator core 5113. At this time, permanent magnets and other magnetic parts can be arranged in the part of the outer rotor 513 around the stator core 5113. The magnetic field generated by the stator core 5113 being powered can act on the outer rotor 513, thereby causing the outer rotor 513 to rotate relative to the stator 511. A certain gap can be maintained between the outer rotor 513 and the stator core 5113 and the fixed section, so that the fixed section is only inserted into the outer rotor. The stator 511 is in the stator 513 but is not connected to the outer rotor 513. At this time, a bearing 515 is arranged between the outer rotor 513 and the connecting section, and the inner ring of the bearing 515 is sleeved and fixed on the outer periphery of the connecting section, so that the outer ring of the bearing 515 is fixedly arranged on the inner wall of the outer rotor 513. The rotational connection characteristic of the bearing 515 can ensure the rotational connection between the stator 511 and the outer rotor 513, so that the outer rotor 513 can stably rotate relative to the stator 511 on the outer periphery of the stator 511 when affected by the magnetic field of the stator 511, thereby realizing the stable operation of the fan body 51.

[0059] Therefore, the hollow shaft 5111 can make the length of the connecting section greater than or equal to the length of the fixed section. At this time, by arranging a bearing 515 between the connecting section and the outer rotor 513, the inner ring of the bearing 515 is sleeved and fixed on the outer periphery of the connecting section, and the outer ring of the bearing 515 is fixed on the inner ring of the outer rotor 513. By utilizing the design of the connecting section and the fixed section of the hollow shaft 5111 to shift the center of gravity of the entire structure toward the connecting section, the fan body 51 can be provided with the bearing 515 only on the connecting section of the hollow shaft 5111. The rotational connection between the outer rotor 513 and the stator 511 can also be stably achieved, thereby ensuring the stable rotational support of the bearing 515 on the outer rotor 513. Further, the single-sided bearing 515 support and installation method of the fan body 51 can be achieved, and the setting of the connecting support structure of the hollow shaft 5111 between the fixed section and the outer rotor 513 can be reduced, so that the outer rotor 513 can be arranged with an integral annular structure or a sleeve structure. Among them, the bearing 515 can be arranged close to the junction of the connecting section and the fixed section, and the stator core 5113 can be arranged close to the junction of the fixed section and the connecting section, so that the overall center of gravity of the fan body 51 can overlap with the position of the bearing 515 as much as possible, ensuring the stable supporting effect of the bearing 515 on the rotation of the outer rotor 513, and further improving the overall structural stability and reliability of the fan body 51.

[0060] By adjusting the structural setting of the stator 511, the stator 511 and the outer rotor 513 can be provided with a bearing 515 on one side to ensure the stable operation of the fan body 51, which can effectively reduce the overall thickness of the fan body 51 and realize the miniaturized design of the fan body 51, thereby better reducing the space occupied by the fan assembly 50 in the air outlet housing 10, which is conducive to better reducing the overall thickness of the air outlet housing 10, so that the air outlet housing 10 can achieve a large air volume blowing effect with a smaller size design, further improving the practicality and reliability of the fan 100.

[0061] It can be understood that one or more bearing 515 units can be set between the connecting section of the fan body 51 and the outer rotor 513, so that during the production process, according to the working conditions of the equipment installed with the fan body 51, a suitable number of bearing 515 units can be selected to support and fix the outer rotor 513, so as to ensure the stable and reliable operation of the fan assembly 50.

[0062] In some embodiments, the fan body 51 can only adopt a structural setting of one bearing 515. In this case, the installation position of the bearing 515 on the connecting section of the hollow shaft 5111 can be set as close as possible to the intersection of the connecting section and the fixed section, so that the bearing 515 can be installed as close to the center of gravity of the hollow shaft 5111 as possible, thereby better ensuring the connection stability and reliability between the stator 511 and the outer rotor 513, and improving the overall stability of the fan 100.

[0063] In other embodiments, the fan body 51 may also adopt the configuration of at least two bearing 515 units to better improve the connection stability and reliability between the stator 511 and the outer rotor 513, and ensure the stable rotation of the outer rotor 513. At this time, at least two bearing 515 units may be arranged in sequence along the extension direction of the connecting section, and the inner ring of each bearing 515 unit may be sleeved and fixed on the outer periphery of the connecting section, and the outer ring of each bearing 515 unit may be connected and fixed on the inner wall of the outer rotor 513. Under the action of at least two bearing 515 units, the contact area between the bearing 515 connecting the stator 511 connecting section and the outer rotor 513 may be better improved, so that the bearing 515 can play a better supporting role on the outer rotor 513, and better reduce the shaking of the outer rotor 513 when rotating, further improving the structural stability and reliability of the fan assembly 50, and ensuring the stable operation of the fan 100.

[0064] During the operation of the fan assembly 50, the fan blades 53 connected to the outer rotor 513 rotate, causing the outer rotor 513 to be subjected to a force from the connecting section of the hollow shaft 5111 to the fixed section on the fan blades 53. At this time, by staggering the magnetic rings of the stator core 5113 and the outer rotor 513, a portion of the structure of the stator core 5113 close to the connecting section on the hollow shaft 5111 can be exposed outside the encirclement of the magnetic ring, and a portion of the structure of the magnetic ring away from the connecting section of the hollow shaft 5111 can be separated from the stator core 5113. 3, so that the magnetic ring and the stator core 5113 are partially fitted and sleeved, and part of the structure of the magnetic ring is staggered outward, and then the stator core 5113 can use the stator core 5113 and the magnetic ring to exert a certain force on the magnetic ring from the fixed section of the hollow shaft 5111 to the connecting section, so that the load force on the outer rotor 513 during the rotation process can be well offset, preventing the outer rotor 513 from separating from the stator 511, ensuring the stable operation of the fan assembly 50, and further improving the overall structural stability and reliability of the fan 100.

[0065] See also Figure 4 and Figure 6 In an embodiment of the utility model, the fan blade 53 includes an inner hub 531, an outer hub 533, a first blade 535 and a second blade 537. The inner hub 531 is sleeved on the outer rotor 513; the outer hub 533 is coaxially arranged with the inner hub 531 and sleeved on the outer periphery of the inner hub 531, and an air inlet channel 5311 is formed between the outer hub 533 and the inner hub 531; the first blade 535 is connected to the outer periphery of the outer hub 533; the second blade 537 is arranged in the air inlet channel 5311 and connects the outer hub 533 and the inner hub 531.

[0066] In this embodiment, by making the fan blade 53 form an air inlet channel 5311 between the coaxially arranged outer hub 533 and the inner hub 531, and arranging a plurality of first blades 535 around the outer circumference of the outer hub 533, and arranging a plurality of second blades 537 around the inner wall of the outer hub 533 and the outer wall of the inner hub 531 to connect the outer hub 533 and the inner hub 531, the fan blade 53 can adopt a fan blade 53 structure in the form of a combined air outlet to better improve the air intake effect of the air outlet device. Among them, the first blade 535 can adopt an axial flow blade or an oblique flow blade, and the second blade 537 can adopt a centrifugal blade. Since the number of centrifugal blades is not affected by the size of the hub and the limitation of the hub ratio, it meets the design requirements of a small hub and multiple blades, so that the inner hub 531 can adopt a smaller structural design, and then compared with the fan blade 53 structure with only axial flow blades, the second blade 537 in the form of a centrifugal blade can increase the number of the second blade 537, which is conducive to better increasing the air intake volume of the fan blade 53. At this time, by forming an air inlet channel 5311 with the outer hub 533 and the inner hub 531, the outer hub 533 can be used to guide the airflow disturbed by the second blade 537 under the centrifugal action, so that the airflow generated by the second blade 537 is discharged axially along the hollow shaft 5111. At this time, the rotation of the first blade 535 can generate an axial or oblique airflow, and then the airflow generated by the first blade 535 can be combined with the airflow generated by the second blade 537 and then discharged. In this way, the fan blade 53 can rotate to generate a larger air volume, further increasing the air volume of the fan 100, which is conducive to better reducing the operating power of the fan body 51 and improving the practicality and reliability of the fan 100. Among them, the second blade 537 in the form of a centrifugal blade can generate an airflow with a larger wind pressure, and then the airflow generated by the first blade 535 is mixed with the airflow generated by the second blade 537, so that the airflow generated by the fan blade 53 has a higher air pressure and flow, and the blowing effect of the fan 100 is better improved. Since the linear velocity of the inner side of the axial flow blade is smaller than the linear velocity of the outer side, the airflow generated by the axial flow blade has the characteristics of small inner velocity and large outer velocity. Therefore, when the first blade 535 adopts an axial flow blade, by setting the second blade 537 between the inner hub 531 and the outer hub 533, the airflow generated by the second blade 537 can be used to compensate for the defect of insufficient inner linear velocity of the first blade 535, so that the fan blade 53 can blow out a more uniform airflow, better realize the large air volume intake effect of the fan 100, and further improve the structural stability and reliability of the fan 100.

[0067] Among them, when the fixing member 30 is formed with an arc guide surface on the side facing the air inlet hole, the projection of the air inlet flow channel 5311 on the fixing member 30 can overlap with at least part of the arc guide surface, so that the airflow formed by the disturbance of the second blade 537 can be better merged into the airflow formed by the disturbance of the first blade 535 under the guiding action of the arc guide surface for mixing, which is conducive to better reducing the turbulence of the incoming air flow in the air outlet shell 10, reducing the flow velocity attenuation and noise of the incoming air flow, and further improving the practicality and reliability of the fan 100.

[0068] In addition, the outer hub 533 may include a first air gathering ring and a second air gathering ring, the first blade 535 is connected to the outer periphery of the first air gathering ring, the second air gathering ring is arranged inside the first air gathering ring, one end of the second air gathering ring is connected to the inner wall of the first air gathering ring, and the second blade 537 connects the inner hub 531 and the second air gathering ring. The outer periphery of the second air gathering ring is arranged at an angle to the inner wall of the first air gathering ring, and the width of the second air gathering ring is configured to gradually increase in the direction from the air inlet to the air outlet. By setting an inclined second air gathering ring in the first air gathering ring, the second air gathering ring can be designed with a gradually expanding trumpet-shaped structure along the air inlet direction. The second blade 537 is used to connect the inner hub 531 and the second air gathering ring, so that the air can enter the air inlet channel 5311 and then pass through the second air gathering ring and the inner hub 531 to be disturbed by the second blade 537. Due to the turbulent flow of the second blade 537 of the centrifugal blade, the airflow can be subjected to a certain centrifugal force between the second air gathering ring and the inner hub 531, so that the airflow can flow along the inner wall of the second air gathering ring. At this time, by setting the second air gathering ring inclined, the airflow generated by the second blade 537 can be blown out obliquely along the inner wall of the second air gathering ring, which is beneficial to guiding and exhausting the airflow, so that the airflow can be more easily discharged from between the inner hub 531 and the second air gathering ring, thereby reducing turbulence or noise generated by the airflow. In addition, due to the inclined setting of the second wind focusing ring, the airflow can be blown out of the air inlet channel 5311 obliquely, so that the airflow disturbed by the second blade 537 can more quickly meet the airflow disturbed by the first blade 535, thereby achieving rapid mixing of the two airflows, thereby better improving the flow rate of the mixed airflow generated by the fan blade 53, and further improving the high-speed blowing effect of the fan 100.

[0069] See also Figure 2 and Figure 4 In an embodiment of the utility model, the fixing member 30 includes a mounting cylinder 31 and a guide plate 33. A pressure reducing through hole 311 is provided in the mounting cylinder 31. The fan assembly 50 is sleeved on the outer periphery of the mounting cylinder 31. The guide plate 33 is connected to the outer periphery of the mounting cylinder 31 and is provided at one end of the mounting cylinder 31 facing the air outlet. The support guide vane 35 connects the guide plate 33 and the inner wall of the air outlet cavity 111. An arc-shaped guide surface is formed on the side of the guide plate 33 facing the fan assembly 50.

[0070] In this embodiment, by arranging the guide plate 33 around the outer periphery of the installation cylinder 31 near the air outlet, the fan assembly 50 can be fixed to the guide plate 33 by bolts or snap connections, which is conducive to better increasing the connection area between the fixing member 30 and the fan assembly 50, and realizing the stable support and fixation of the fan assembly 50 by the fixing member 30. At this time, by using at least two support guide vanes 35 arranged at intervals on the outer periphery of the guide plate 33, the support guide vanes 35 can be used to connect the inner wall of the air outlet cavity 111 to realize the support and fixation of the fixing member 30 by the support guide vanes 35. At the same time, by using multiple support guide vanes 35 of smaller size to be arranged at intervals, the gaps between the support guide vanes 35 can be used for airflow, so as to ensure the stable and reliable air outlet of the fan 100, and further improve the structural stability and reliability of the fan 100.

[0071] Among them, the guide plate 33 can be provided with a conical boss structure on the side facing the air inlet; or the guide plate 33 can be provided with a conical ring structure that gradually expands in the direction from the air inlet to the air outlet, so that the side wall of the guide plate 33 facing the air inlet can form an arc-shaped guide surface inclined to the outer periphery of the mounting cylinder 31. Under the action of the arc-shaped guide surface, the airflow formed after the air is disturbed by the fan assembly 50 can flow smoothly toward the air outlet along the arc-shaped guide surface, thereby achieving the guiding effect on the incoming airflow, which is conducive to better avoiding the obstruction of the guide plate 33 to the incoming airflow, reducing the attenuation of the airflow velocity, and at the same time can well reduce the noise generated by the turbulence of the airflow in the air outlet cavity 111, further improving the practicality and reliability of the fan 100.

[0072] See also Figure 1 , Figure 2 and Figure 4 In the embodiment of the utility model, the air outlet housing 10 is provided with an air inlet grille 15, which is connected to one end of the air outlet housing 10 and covers the air inlet hole. The air outlet housing 10 is provided with an air outlet grille 17, which is connected to one end of the air outlet housing 10 and covers the air outlet hole.

[0073] In this embodiment, an air inlet grille 15 and an air outlet grille 17 are respectively provided at the air inlet hole and the air outlet hole of the air outlet housing 10. The air inlet grille 15 and the air outlet grille 17 can be used to prevent the user from accidentally touching the fan assembly 50 during the operation of the fan 100. At the same time, some debris in the environment can be prevented from entering the air outlet cavity 111 and interfering with and colliding with the fan assembly 50, thereby preventing the fan blades 53 of the fan assembly 50 from being damaged with a certain probability. The protective effect of the air outlet housing 10 on the fan assembly 50 is achieved, and the structural stability and reliability of the fan 100 are further improved.

[0074] See also Figure 1 , Figure 2 and Figure 4In an embodiment of the present invention, the air inlet grille 15 is detachably connected to the air outlet housing 10 . And / or, the air outlet grille 17 is detachably connected to the air outlet housing 10 .

[0075] In this embodiment, the air inlet grille 15 can be provided with external threads or snap-fit ​​grooves and other structures on the outer circumference. In this case, internal threads and snap-fit ​​protrusions and other structures can be provided on the inner wall of the air outlet shell 10 near the air inlet hole, so that the outer circumference of the air inlet grille 15 and the inner wall of the air outlet shell 10 can be fixed by threaded fit or snap-fit ​​fit. Alternatively, the air inlet grille 15 can be provided with a collar, which can be set to the size of the end of the air outlet shell 10 with the air inlet hole, so that the collar can be sleeved on the end of the air outlet shell 10. In this case, an internal thread can be provided on the inner wall of the collar. And structures such as snap-fit ​​protrusions, and external threads or snap-fit ​​grooves are provided on the outer periphery of the end of the air outlet shell 10, so that the inner wall of the ring of the air inlet grille 15 and the outer wall of the air outlet shell 10 can be fixed by means of threaded cooperation or snap-fit ​​cooperation, and then the air inlet grille 15 and the air outlet shell 10 can be conveniently disassembled and assembled by means of threaded connection or snap-fitting, thereby further improving the assembly convenience and reliability of the air inlet grille 15 and the air outlet shell 10, facilitating the disassembly and assembly of the air inlet grille 15 for cleaning and maintenance during daily use, and improving the practicality and reliability of the fan 100.

[0076] In addition, the air outlet grille 17 may be provided with an external thread or a snap-fit ​​groove or other structures on the outer circumference. In this case, an internal thread and a snap-fit ​​protrusion or other structures may be provided on the inner wall of the air outlet shell 10 near the air outlet hole, so that the outer circumference of the air outlet grille 17 and the inner wall of the air outlet shell 10 can be fixed by means of threaded fit or snap-fit ​​fit. Alternatively, the air outlet grille 17 may be provided with a collar, which may be set to correspond to the end size of the air outlet shell 10 with the air outlet hole, so that the collar can be sleeved on the end of the air outlet shell 10. In this case, an internal thread and a snap-fit ​​protrusion may be provided on the inner wall of the collar. The air outlet grille 17 is provided with a protrusion and other structures, and an external thread or a snap-in groove and other structures are provided on the outer periphery of the end of the air outlet shell 10, so that the inner wall of the ring of the air outlet grille 17 and the outer wall of the air outlet shell 10 can be fixed by means of threaded cooperation or snap-in cooperation, and then the air outlet grille 17 and the air outlet shell 10 can be conveniently disassembled and assembled by means of threaded connection or snap-in connection, thereby further improving the assembly convenience and reliability of the air outlet grille 17 and the air outlet shell 10, facilitating the disassembly and assembly of the air outlet grille 17 for cleaning and maintenance during daily use, and improving the practicality and reliability of the fan 100.

[0077] By using the detachable air inlet grille 15 and the air outlet grille 17, the fan 100 can more conveniently clean the dust accumulated in the air outlet chamber 111, better ensure the neat air outlet of the fan 100, avoid the accumulated dust from affecting the air volume of the air outlet airflow, and further improve the practicality and reliability of the fan 100.

[0078] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fan, characterized in that: include: An air outlet shell, wherein an air outlet cavity is formed in the air outlet shell, an air inlet hole and an air outlet hole communicating with the air outlet cavity are respectively provided at two ends of the air outlet shell, and avoidance grooves are provided on two opposite outer side walls of the air outlet shell; A fixing member, the fixing member is arranged in the air outlet cavity, and at least two supporting guide vanes are arranged around the outer periphery of the fixing member, the supporting guide vanes are connected to the inner wall of the air outlet cavity, and are arranged close to the air outlet hole; A fan assembly, the fan assembly is arranged in the air outlet cavity and connected to the fixing member, and the fan assembly is arranged between the supporting guide vane and the air inlet hole; The bracket is provided with a steering mechanism, the steering mechanism is provided with two support arms arranged relatively at intervals, the air outlet shell is arranged between the two support arms, the two support arms are rotatably connected to the two relative outer side walls of the air outlet shell, and at least part of the structure is accommodated in the avoidance groove.

2. The fan according to claim 1, characterized in that An accommodating space is formed in the air outlet housing, and the fan further includes a control system and a power supply system. The control system and / or the power supply system are arranged in the accommodating space.

3. The fan according to claim 2, characterized in that At least one of the supporting guide vanes is provided with a wire passing groove, and the inner wall of the air outlet housing is provided with a wire passing hole, and the wire passing hole is connected with the wire passing groove and the accommodating space.

4. The fan according to claim 1, characterized in that: An installation space is provided on one side of the fixing member close to the air outlet. The fan further comprises a control system and a power supply system. The control system and / or the power supply system are arranged in the installation space.

5. The fan according to claim 1, characterized in that The bracket is also provided with a supporting body, which includes a column and a chassis. The chassis is provided with a storage cavity. The column has a first state and a second state. When the column is in the first state, it is accommodated in the storage cavity. When the column is in the second state, it is connected to the steering mechanism and the chassis. The chassis is detachably connected to one end of the air outlet shell.

6. The fan according to claim 5, characterized in that The steering mechanism comprises: A fixing seat, wherein the supporting arms are respectively disposed on two opposite sides of the fixing seat; A first steering device, which is installed on the support arm and connected to the air outlet housing, and drives the air outlet housing to rotate along a first direction; A second steering device is connected to the fixing seat and the column, and the second steering device drives the fixing seat to rotate along a second direction.

7. The fan according to any one of claims 1 to 6, characterized in that A decompression through hole is provided in the fixing member, and the decompression through hole penetrates the fixing member. The fan assembly is sleeved on the outer periphery of the fixing member, and the air inlet hole and the air outlet hole are arranged around the decompression through hole.

8. The fan according to claim 7, characterized in that The fan assembly comprises: A fan body, the fan body comprising a stator and an outer rotor, the stator being provided with an insertion through hole, at least a part of the structure of the fixing member being passed through the insertion through hole and connected to fix the stator, and the outer rotor being rotatably sleeved on the outer periphery of the stator; The fan blades are connected to the outer rotor, and the fan body drives the fan blades to rotate.

9. The fan according to claim 8, characterized in that The stator comprises a hollow shaft and a stator core, the hollow shaft is provided with the plug-in through hole, the hollow shaft is sleeved on the outer periphery of the fixing member, the hollow shaft comprises a connecting section and a fixing section, and the stator core is connected to the outer periphery of the fixing section; The outer rotor is sleeved on the outer circumference of the hollow shaft and is arranged around the stator core. The fan also includes a bearing, which is arranged between the connecting section and the outer rotor and connects the outer circumference of the connecting section and the inner wall of the outer rotor so that the outer rotor rotates relative to the hollow shaft.

10. The fan according to claim 8, characterized in that The fan blades include: An inner hub, the inner hub being sleeved on the outer rotor; An outer hub, the outer hub is coaxially arranged with the inner hub and sleeved on the outer circumference of the inner hub, and an air inlet channel is formed between the outer hub and the inner hub; a first blade connected to an outer circumference of the outer hub; and The second blade is disposed in the air inlet channel and is connected to the outer hub and the inner hub.

11. The fan according to claim 7, characterized in that: The fixing member comprises: A mounting cylinder, wherein the pressure reducing through hole is provided in the mounting cylinder, and the fan assembly is sleeved on the outer periphery of the mounting cylinder; and A guide plate is connected to the outer circumference of the mounting cylinder and is arranged at one end of the mounting cylinder facing the air outlet. The supporting guide vane connects the guide plate and the inner wall of the air outlet cavity. The guide plate has an arc-shaped guide surface formed on the side facing the fan assembly.

12. The fan according to any one of claims 1 to 6, characterized in that: The air outlet housing is provided with an air inlet grille, which is connected to one end of the air outlet housing and covers the air inlet hole; The air outlet housing is provided with an air outlet grille, which is connected to one end of the air outlet housing and covers the air outlet hole; And / or, the air inlet grille is detachably connected to the air outlet housing; And / or, the air outlet grille is detachably connected to the air outlet housing.

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