Fan

Abstract

The utility model discloses a fan which comprises an outer shell, an inner shell and a fan body. The driving fan blade is mounted in the assembly space, and the driving fan blade is provided with a rotating central axis; and the wind type regulation and control assembly is detachably arranged on the shell, the wind type regulation and control assembly is located on the wind outlet side of the driving fan blades, and the wind type regulation and control assembly is constructed to be used for converging airflow sent out from the driving fan blades towards the rotating central axis or diverging the airflow towards the direction away from the rotating central axis. Therefore, by arranging the wind type regulation and control assembly which can be constructed to have the wind gathering function or the wind scattering function, a user can replace the wind type regulation and control assembly with the corresponding function according to different use requirements, and the wind type regulation and control assembly is detachably connected with the shell, so that the fan can replace the wind type regulation and control assemblies with different functions conveniently; the fan can have different air outlet effects, the air outlet state of the fan can be adjusted without arranging a driving mechanism, and the structure of the fan is effectively simplified.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to Chinese Patent Application No. 202323671430.X, filed on December 29, 2023, entitled “Fan”. Technical Field

[0003] This utility model relates to the field of household appliance technology, and in particular to a fan. Background Technology

[0004] In related technologies, fans are equipped with guide mechanisms for adjusting airflow direction. However, a drive structure is required to switch the guiding effect of the guide mechanism on airflow, resulting in complex fan structure and poor reliability. Utility Model Content

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a fan whose airflow effect can be switched, and which has a simple structure and high reliability.

[0006] A fan includes: a housing having an assembly space formed therein; a drive blade mounted in the assembly space, the drive blade having a rotational central axis; and a wind pattern control assembly detachably disposed in the housing, the wind pattern control assembly being located on the air outlet side of the drive blade, the wind pattern control assembly being configured to converge the airflow from the drive blade toward the rotational central axis or to disperse it in a direction away from the rotational central axis.

[0007] According to this utility model, the fan can be configured with a wind pattern control component that has a wind gathering or wind dispersing function. The wind pattern control component is detachably connected to the outer casing, so that the fan can be replaced with wind pattern control components with different functions, allowing the fan to have different air output effects. Users can replace the wind pattern control component with one with the corresponding function according to different usage needs, so that the air output effect of the fan can meet different user needs and improve the user experience. At the same time, the detachable connection between the wind pattern control component and the outer casing can improve the maintenance convenience of the fan, and eliminate the need for a drive mechanism, effectively simplifying the structure of the wind pattern control component and improving the reliability of the fan.

[0008] According to some embodiments of the present invention, the wind pattern control component includes a wind dispersion component and a wind gathering component. The wind dispersion component is used to guide the airflow in a direction deviating from the rotation center axis to disperse the airflow. The wind gathering component is used to guide the airflow in a direction toward the rotation center axis to converge the airflow. The wind dispersion component and the wind gathering component are interchangeably disposed on the housing.

[0009] According to some embodiments of the present invention, the wind pattern control component includes a variety of wind dispersing components of different shapes, and the various wind dispersing components are interchangeably disposed on the housing; and / or the wind pattern control component includes a variety of wind concentrating components of different shapes, and the various wind concentrating components are interchangeably disposed on the housing.

[0010] According to some embodiments of the present invention, in a direction parallel to the axis of rotation, the outer casing is provided with a first mounting position and a second mounting position spaced apart, the first mounting position and the second mounting position being used to install the air dispersing component; or the first mounting position and the second mounting position being used to install the air concentrating component.

[0011] According to some embodiments of the present invention, the air dissipation component includes a first air duct adjustment component, the cross-sectional area of ​​which gradually increases in the direction toward the air outlet of the first air duct adjustment component.

[0012] According to some embodiments of the present invention, the air dispersing assembly further includes: a first bracket, the first bracket having an annular first mounting space, the first air duct adjustment component being disposed on the first bracket and located at the air outlet end of the first bracket; a plurality of first guide vanes, the plurality of first guide vanes being circumferentially spaced within the first mounting space, and the air outlet end of the first guide vane extending outward at an angle relative to the air inlet end of the first guide vane toward the inner peripheral wall of the first mounting space.

[0013] According to some embodiments of the present invention, the air distribution assembly further includes: a first bracket, the first bracket having an annular first installation space, the first air duct adjustment component being disposed on the first bracket and located at the air outlet end of the first bracket; and a first guide vane assembly, the first guide vane assembly being disposed within the first installation space, the first guide vane assembly including a plurality of first front guide vanes and a plurality of first rear guide vanes, the plurality of first front guide vanes being located on the air outlet front side of the plurality of rear guide vanes, and the plurality of first front guide vanes and the plurality of first rear guide vanes being offset in the circumferential direction.

[0014] According to some embodiments of the present invention, the air dispersing assembly includes an air dispersing mesh cover, the air dispersing mesh cover includes first air outlet ribs arranged at intervals along the circumference, the first air outlet ribs being used to disperse the airflow in a direction away from the rotation center axis.

[0015] According to some embodiments of the present invention, the wind-gathering component includes a second air duct adjustment member, and the cross-sectional area of ​​the second air duct adjustment member gradually decreases in the direction toward the air outlet of the second air duct adjustment member.

[0016] According to some embodiments of the present invention, the wind-gathering component further includes: a second bracket, the second bracket having an annular second mounting space; a second air duct adjustment component disposed at the air outlet end of the second bracket; and a plurality of second guide vanes, the plurality of second guide vanes being circumferentially spaced within the second mounting space, with the air outlet ends of the second guide vanes guiding the air towards the rotation center axis.

[0017] According to some embodiments of the present invention, the wind-gathering assembly further includes: a second bracket, the second bracket having a second installation space; a second air duct adjustment component disposed at the air outlet end of the second bracket; and a second guide vane assembly disposed within the second installation space. The second guide vane assembly includes a plurality of second front guide vanes and a plurality of second rear guide vanes, the plurality of second front guide vanes being located in front of the air outlet of the plurality of rear guide vanes, and the plurality of second front guide vanes and the plurality of second rear guide vanes being arranged opposite each other in the front-rear direction.

[0018] According to some embodiments of the present invention, the wind-gathering component includes a wind-gathering mesh cover, the wind-gathering mesh cover includes second air outlet ribs arranged at intervals along the circumference, the second air outlet ribs being used to converge the airflow toward the direction of the rotation center axis.

[0019] According to some embodiments of the present invention, the wind pattern control component is threadedly engaged with the housing; or the wind pattern control component is magnetically engaged with the housing; or the wind pattern control component is plugged into the housing.

[0020] According to some embodiments of the present invention, the fan further includes a drive fan, which is an axial flow fan.

[0021] According to some embodiments of the present invention, the fan further includes an air outlet grille, the outer casing has an air inlet area and an air outlet area, and the air outlet grille is disposed in the air outlet area.

[0022] According to some embodiments of the present invention, the air outlet mesh includes a middle region and an outer ring region, wherein the air guide ribs in the middle region are formed as arc-shaped ribs, and the air guide ribs in the outer ring region are formed as straight ribs.

[0023] According to some embodiments of the present invention, in the axial direction away from the outer casing, the air outlet end of the straight rib extends obliquely outward in a direction away from the rotation center line of the drive fan blade.

[0024] According to some embodiments of this utility model, the angle of inclination of the straight rib relative to the rotation center line ranges from 20° to 40°.

[0025] According to some embodiments of the present invention, the air outlet mesh cover is detachably disposed on the outer shell.

[0026] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of the fan structure according to an embodiment of the present utility model;

[0029] Figure 2 for Figure 1 Sectional view at AA;

[0030] Figure 3 This is a schematic diagram illustrating the assembly of the wind-gathering component and the outer casing according to an embodiment of the present invention. Figure 1 ;

[0031] Figure 4 This is a schematic diagram of the assembly of the air diffuser component and the housing according to an embodiment of the present utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the outer shell described in an embodiment of the present utility model. Figure 1 ;

[0033] Figure 6 This is a schematic diagram of the structure of the wind-gathering component described in an embodiment of the present invention. Figure 1 ;

[0034] Figure 7 This is a schematic diagram of the structure of the outer shell described in an embodiment of the present utility model. Figure 2 ;

[0035] Figure 8 This is a schematic diagram of the structure of the wind-gathering component described in an embodiment of the present invention. Figure 2 ;

[0036] Figure 9 for Figure 8 Sectional view at BB;

[0037] Figure 10 This is a schematic diagram of the structure of the outer shell described in an embodiment of the present utility model. Figure 3 ;

[0038] Figure 11 This is a schematic diagram of the structure of the wind-gathering component described in an embodiment of the present invention. Figure 3 ;

[0039] Figure 12 This is a schematic diagram of the structure of the outer shell described in an embodiment of the present utility model. Figure 4 ;

[0040] Figure 13 This is a schematic diagram of the structure of the wind-gathering component described in an embodiment of the present invention. Figure 4 ;

[0041] Figure 14 for Figure 13 Sectional view at CC;

[0042] Figure 15 This is a schematic diagram of the structure of the air outlet mesh cover described in an embodiment of the present utility model;

[0043] Figure 16 This is a schematic diagram of the structure of the air diffuser mesh cover described in an embodiment of the present utility model;

[0044] Figure 17 This is a schematic diagram of the structure of the wind-gathering mesh cover described in an embodiment of the present utility model;

[0045] Figure 18 This is a schematic diagram of the structure of the wind-gathering mesh cover with an installation mating part according to an embodiment of the present utility model. Figure 1 ;

[0046] Figure 19 This is a schematic diagram of the structure of the wind-gathering mesh cover with an installation mating part according to an embodiment of the present utility model. Figure 2 ;

[0047] Figure 20 This is a schematic diagram of the structure of the wind-gathering mesh cover with an installation mating part according to an embodiment of the present utility model. Figure 3 ;

[0048] Figure 21 This is a schematic diagram of the structure of the wind-gathering mesh cover with an installation mating part according to an embodiment of the present utility model. Figure 4 ;

[0049] Figure 22 This is a schematic diagram of the structure of the outer shell with a mounting part according to an embodiment of the present utility model;

[0050] Figure 23 This is a schematic diagram of the structure of the outer shell provided with a first mounting position and a second mounting position according to an embodiment of the present utility model;

[0051] Figure 24 This is a schematic diagram illustrating the assembly of the wind-gathering component and the outer casing according to an embodiment of the present invention. Figure 2 ;

[0052] Figure 25 This is a schematic diagram illustrating the assembly of the wind-gathering component and the outer casing according to an embodiment of the present invention. Figure 3 ;

[0053] Figure 26 for Figure 25 Sectional view at DD.

[0054] Figure label:

[0055] Fan 100

[0056] 110 Outer casing, 111 Assembly space, 112 Mounting section, 113 Air inlet area, 114 Air outlet area, 115 First mounting position, 116 Second mounting position

[0057] Drive fan 120, drive blade 121

[0058] Leaf swing 1301

[0059] Air diffuser assembly 131, first air duct adjuster 1311, first bracket 1313, first installation space 1314, first guide vane 1315, air diffuser mesh cover 1316, first air outlet rib 1317.

[0060] Wind concentrator 132, second air duct adjuster 1321, second bracket 1322, second installation space 13221, second guide vane 1323, wind concentrator mesh cover 1324, second air outlet rib 1325.

[0061] Installation and fitting part 133

[0062] Air outlet mesh cover 140, middle area 141, outer ring area 142, air guide ribs 143, arc-shaped ribs 1431, straight ribs 1432. Detailed Implementation

[0063] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0064] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "front," "rear," "left," "right," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0066] The following is for reference. Figures 1-26 A fan 100 according to an embodiment of the present utility model is described.

[0067] Combination Figures 1 to 4 The fan 100 according to the present invention includes: a housing 110, in which an assembly space 111 is formed; a drive blade 121, which is mounted in the assembly space 111 and has a rotational central axis; and a wind pattern control assembly, which is detachably disposed in the housing 110 and located on the air outlet side of the drive blade 121. The wind pattern control assembly is configured to converge the airflow from the drive blade 121 toward the rotational central axis or to disperse it in a direction away from the rotational central axis.

[0068] It should be noted that "converging toward the rotation center axis" can include: the airflow direction guided by the airflow control component is parallel to the rotation center axis, or the airflow direction guided by the airflow control component is parallel to the rotation center axis and further converges toward the rotation center axis; "diffusion away from the rotation center axis" can include: the airflow remains flowing from the drive fan blade 121, or the airflow further diffuses outward.

[0069] Specifically, the housing 110 serves as the mounting carrier for the drive fan blade 121 and the wind pattern control component. The drive fan blade 121 and the wind pattern control component can be installed in the assembly space 111. The housing 110 can protect the drive fan blade 121 and the wind pattern control component, preventing damage to the fan 100 caused by external debris entering the drive fan blade 121 or the wind pattern control component.

[0070] Furthermore, the drive fan blade 121 can drive the air entering the housing 110 to form an airflow. The airflow pattern control component is located on the air outlet side of the drive fan blade 121, and the airflow delivered by the drive fan blade 121 flows towards the airflow pattern control component, combined with... Figure 2 and Figure 3 The wind pattern control component can be constructed to have a wind-gathering function, that is, the wind pattern control component can guide the airflow to convert its circumferential velocity into its axial velocity, making the airflow from the wind pattern control component more concentrated and its flow distance longer, resulting in a strong airflow.

[0071] It should be noted that the airflow delivered by the driving fan blade 121 is spiral-shaped and has circumferential velocity and axial velocity.

[0072] Reference Figure 4 The wind pattern control component can also be configured to have a wind dispersion function, meaning that the wind pattern control component has minimal interference with the circumferential velocity component of the airflow. The airflow maintaining a certain circumferential velocity component as it exits the wind pattern control component causes the airflow to disperse radially, resulting in a gentler airflow. The wind pattern control component is detachably connected to the housing 110 for easy disassembly and replacement. Users can choose to install either a wind pattern control component with a wind-gathering function or a wind-dispersing function on the housing 110 according to their actual usage needs. When the wind pattern control component with the wind-gathering function is installed on the housing 110, the fan 100 delivers a strong airflow; when the wind pattern control component with the wind-dispersing function is installed on the housing 110, the fan 100 delivers a gentler airflow. This allows the fan 100 to achieve different airflow effects to meet different user needs and improve the user experience. Furthermore, the detachable connection between the wind pattern control component and the housing 110 facilitates the maintenance of the fan 100, effectively improving its ease of maintenance.

[0073] In related technologies, fans are equipped with guide mechanisms for adjusting airflow direction. However, a drive structure is required to switch the guiding effect of the guide mechanism on airflow, resulting in complex fan structure and poor reliability.

[0074] This application incorporates a wind pattern control component, which can be configured to have either a wind-gathering or wind-diffusing function. The wind pattern control component is detachably connected to the housing 110. When the fan 100 is equipped with a wind pattern control component that gathers air, the fan 100 delivers a strong airflow; when equipped with a wind pattern control component that disperses air, the fan 100 delivers a gentle airflow. This allows the fan 100 to achieve different airflow effects. Users can replace the wind pattern control component with the appropriate function according to their different usage needs, ensuring that the airflow effect of the fan 100 meets various user requirements and improves the user experience.

[0075] According to this utility model, the fan 100 can be configured with a wind pattern control component that has a wind gathering or wind dispersing function. The wind pattern control component is detachably connected to the housing 110, so that the fan 100 can be replaced with wind pattern control components with different functions, so that the fan 100 can have different air output effects. The air output state of the fan 100 can be adjusted without setting a drive mechanism, which effectively simplifies the structure of the fan 100 and improves the reliability of the fan 100. Users can replace the wind pattern control component with one with corresponding function according to different usage needs, so that the air output effect of the fan 100 can meet different user needs and improve the user experience. At the same time, the detachable connection between the wind pattern control component and the housing 110 can improve the maintenance convenience of the fan 100.

[0076] Combination Figure 3 and Figure 4 In some embodiments of this utility model, the wind pattern control component includes a wind dispersing component 131 and a wind concentrating component 132. The wind dispersing component 131 is used to guide the airflow in a direction away from the rotation center axis to make the airflow disperse; the wind concentrating component 132 is used to guide the airflow in a direction towards the rotation center axis to make the airflow converge. The wind dispersing component 131 and the wind concentrating component 132 are replaceably provided in the housing 110.

[0077] Specifically, refer to Figure 4 When the airflow delivered by the drive fan blade 121 flows into the diffuser assembly 131, the diffuser assembly 131 can deflect the airflow in a direction away from the rotation center axis of the drive fan blade 121. The airflow can maintain its circumferential velocity. When the airflow flows out of the diffuser assembly 131, it can diffuse in the radial direction. The airflow outlet range is large and the wind feel is gentle.

[0078] like Figure 3 As shown, when the airflow delivered by the driving fan blade 121 flows into the wind concentrator 132, the wind concentrator 132 can guide the airflow toward the rotation center axis of the driving fan blade 121, so that the circumferential velocity of the airflow is converted into the axial velocity, making the airflow from the wind concentrator 132 more concentrated and the flow distance longer, resulting in a strong airflow.

[0079] Furthermore, both the wind concentrator 132 and the wind diffuser 131 are detachably connected to the housing 110, allowing them to be interchangeably mounted on the housing 110. Users can replace the wind pattern control components mounted on the housing 110 according to their actual usage needs to achieve different airflow effects from the fan 100. When a user needs a gentle breeze, the user can mount the wind diffuser 131 on the housing 110; when a user needs a strong breeze, the user can mount the wind concentrator 132 on the housing 110. This allows the fan 100 to meet different user needs. Moreover, with this structure, the airflow state of the fan 100 can be adjusted without setting up a drive mechanism, which helps to improve the reliability of the fan.

[0080] In some embodiments of this utility model, the wind pattern control component includes a variety of wind dispersing components 131 of different shapes, which are interchangeably disposed in the housing 110; and / or the wind pattern control component includes a variety of wind concentrating components 132 of different shapes, which are interchangeably disposed in the housing 110.

[0081] Specifically, the wind pattern control component includes various types of air diffuser components 131 with different shapes. All of these air diffuser components 131 with different shapes serve to diffuse the airflow. Each type of air diffuser component 131 with different shapes can have a different air diffusion effect. All of these air diffuser components 131 can be replaced and installed in the housing 110. Users can select air diffuser components 131 with different diffusion capabilities according to their actual usage needs, so that the airflow of the fan 100 can be adjusted.

[0082] The wind pattern control component includes various wind-gathering components 132 of different shapes. All of these wind-gathering components 132 can converge airflow. Each type of wind-diffusing component 131 can have a different effect on converging airflow. All of these wind-gathering components 132 can be replaced and installed in the housing 110. Users can select wind-gathering components 132 with different wind-gathering capabilities according to their actual needs, so that the airflow from the fan 100 can be adjusted.

[0083] Optionally, the wind pattern control component may include both a wind concentrator 132 and a wind diffuser 131. Alternatively, the wind pattern control component may include either a wind concentrator 132 or a wind diffuser 131. The specific structure of the wind pattern control component can be determined according to different user needs and actual production and processing costs, and is not specifically limited here.

[0084] Combination Figure 6 , Figure 18 , Figures 23 to 26In some embodiments of this utility model, in a direction parallel to the rotation center axis, the outer casing 110 is provided with a first mounting position 115 and a second mounting position 116 spaced apart, the first mounting position 115 and the second mounting position 116 being used to install the air dispersing component 131; or the first mounting position 115 and the second mounting position 116 being used to install the air concentrating component 132.

[0085] Specifically, the first mounting position 115 and the second mounting position 116 are spaced apart in a direction parallel to the rotation center axis. Both the first mounting position 115 and the second mounting position 116 can be used to install the air diffuser assembly 131. One type of air diffuser assembly 131 can be provided on the first mounting position 115, and another type of air diffuser assembly 131 can be provided on the second mounting position 116, so that two different shaped air diffuser assemblies 131 can be installed on the housing 110 at the same time to diffuse the airflow, improve the air diffusion effect, and make the airflow from the fan 100 more gentle.

[0086] Furthermore, when only one type of air diffuser assembly 131 is provided, the air diffuser assembly 131 can be selectively installed on the first mounting position 115 or the second mounting position 116 to adjust the distance between the air diffuser assembly 131 and the drive fan blade 121, thereby adjusting the air diffuser assembly 131's air dispersion effect. It can be understood that when the axial distance between the air diffuser assembly 131 and the drive fan blade 121 is small, the air diffuser assembly 131 has a good air guiding effect, and when the axial distance between the air diffuser assembly 131 and the drive fan blade 121 is large, the air diffuser assembly 131 has a weak air guiding effect, thereby achieving the adjustment of the air dispersion effect of the air diffuser assembly 131.

[0087] When the wind pattern control component also includes a wind concentrator 132, the first mounting position 115 and the second mounting position 116 can also be used to install the wind concentrator 132. One type of wind concentrator 132 can be provided on the first mounting position 115, and another type of wind concentrator 132 can be provided on the second mounting position 116, so that two different shapes of wind concentrator 132 can be installed on the housing 110 at the same time and concentrate the airflow, thereby improving the wind concentrator effect and making the air output of the fan 100 more powerful.

[0088] Furthermore, when only one type of air-gathering component 132 is provided, the air-gathering component 132 can be selectively installed on the first mounting position 115 or the second mounting position 116 to adjust the distance between the air-gathering component 132 and the driving fan blade 121, thereby adjusting the air-gathering effect of the air-gathering component 132 on the airflow. It can be understood that when the axial distance between the air-gathering component 132 and the driving fan blade 121 is small, the air-gathering component 132 has a good guiding effect on the airflow, and when the axial distance between the air-gathering component 132 and the driving fan blade 121 is large, the air-gathering component 132 has a weak guiding effect on the airflow, thereby achieving the adjustment of the air-gathering effect of the air-gathering component 132 on the airflow.

[0089] like Figure 4 As shown, in some embodiments of the present invention, the air dissipation assembly 131 includes a first air duct adjustment member 1311, the cross-sectional area of ​​which gradually increases in the direction toward the air outlet of the first air duct adjustment member 1311.

[0090] Specifically, the first air duct adjustment component 1311 has an air outlet on the side away from the drive fan blade 121 to facilitate airflow. In the axial direction extending from the drive fan blade 121 to the air outlet of the first adjustment component, the radial distance between the inner wall surface of the first air duct adjustment component 1311 and the extension line of the rotation center axis of the drive fan blade 121 gradually increases, that is, the cross-sectional area of ​​the first air duct adjustment component 1311 gradually increases, so as to guide the airflow to gradually disperse, increase the flow range of the airflow in the radial direction, reduce the intensity of the airflow when it flows out, and make the airflow feel soft when it flows out of the first air duct adjustment component 1311, thus realizing the air dispersion function of the air dispersion component 131.

[0091] Reference Figure 4 In some embodiments of this utility model, the air dispersing assembly 131 further includes: a first bracket 1313, the first bracket 1313 having an annular first mounting space 1314 inside, a first air duct adjustment component 1311 disposed on the first bracket 1313 and located at the air outlet end of the first bracket 1313; a plurality of first guide vanes 1315, the plurality of first guide vanes 1315 being circumferentially spaced within the first mounting space 1314, and the air outlet end of the first guide vane 1315 extending outward at an angle relative to the air inlet end of the first guide vane 1315 toward the inner peripheral wall of the first mounting space 1314.

[0092] Specifically, the first bracket 1313 can serve as the mounting carrier for the first air duct adjustment component 1311 and the first guide vane 1315. Multiple first guide vanes 1315 are arranged sequentially and spaced apart in the first mounting space 1314 along the circumferential direction, and a gap is formed between every two adjacent first guide vanes 1315. Airflow can flow through the gap between adjacent first guide vanes 1315. In the direction extending along the central axis of the first mounting space 1314, the first guide vanes 1315 are arranged at an angle. The air outlet end of the first guide vane 1315 extends at an angle relative to its air inlet end toward the inner circumferential wall of the first mounting space 1314. At this time, the extension direction of the first guide vane 1315 is basically the same as the flow direction of the airflow. The first guide vane 1315 has a small adjustment effect on the airflow and can effectively maintain the original circumferential velocity of the airflow, so that the airflow can be conical after it flows out. The airflow outlet range is large and the wind feel is gentle, thus realizing the air dispersion effect of the air dispersion component 131.

[0093] Furthermore, the first air duct adjustment component 1311 is disposed at the air outlet end of the first bracket 1313, that is, the first air duct adjustment component 1311 is located on the air outlet side of the plurality of first guide vanes 1315. After the airflow passes through the plurality of first guide vanes 1315, it flows into the first air duct adjustment component 1311. The cross-sectional area of ​​the first air duct adjustment component 1311 gradually increases to guide the airflow to gradually disperse further, increase the flow range of the airflow in the radial direction, reduce the intensity of the airflow when it flows out, so that the airflow feels softer when it flows out of the diffuser assembly 131, and improve the diffuser effect of the diffuser assembly 131.

[0094] In some embodiments of this utility model, the air dispersing assembly 131 further includes: a first bracket 1313, the first bracket 1313 having an annular first mounting space 1314, the first air duct adjustment component 1311 being disposed on the first bracket 1313 and located at the air outlet end of the first bracket 1313; and a first guide vane assembly, the first guide vane assembly being disposed within the first mounting space 1314, the first guide vane assembly including a plurality of first front guide vanes and a plurality of first rear guide vanes, the plurality of first front guide vanes being located on the air outlet front side of the plurality of rear guide vanes, and the plurality of first front guide vanes and the plurality of first rear guide vanes being staggered in the circumferential direction.

[0095] Specifically, the first bracket 1313 can serve as the mounting carrier for the first air duct adjustment component 1311 and the first guide vane assembly. Multiple first front guide vanes are arranged sequentially at intervals along the circumferential direction, with a first front gap formed between every two adjacent first front guide vanes to allow airflow. Multiple first rear guide vanes are arranged sequentially at intervals along the circumferential direction, with a first rear gap formed between every two adjacent first rear guide vanes to allow airflow. The first front guide vanes and the first rear guide vanes are arranged axially within the first mounting space 1314. The first front guide vanes are located at the air outlet end of the first rear guide vanes. Airflow flows from the air inlet end of the first rear guide vanes into the first rear gap and then into the first front gap. Both the first rear guide vanes and the first front guide vanes can guide the airflow, thereby adjusting the direction of airflow.

[0096] Furthermore, in the extension direction of the central axis of the first installation space 1314, the orthographic projection of each first rear guide vane is located between the orthographic projections of every two adjacent first front guide vanes. That is, the first rear guide vane is arranged opposite to the first front gap in the axial direction, thereby realizing that multiple first front guide vanes and multiple first rear guide vanes are staggered in the circumferential direction. The first front gap and the first rear gap are staggered, and the first front guide vane and the first rear guide vane cannot continuously guide the airflow. As a result, the guiding effect of the first guide vane assembly on the airflow is small. When the airflow passes through the first guide vane assembly, it can maintain the circumferential velocity of the airflow. When the airflow flows out of the first guide vane assembly, it can be conical. The airflow outlet range is large and the wind feel is gentle, thus realizing the air dispersion effect of the air dispersion assembly 131.

[0097] Furthermore, the first air duct adjustment component 1311 is disposed at the air outlet end of the first bracket 1313, that is, the first air duct adjustment component 1311 is located on the air outlet side of the first guide vane assembly. After the airflow passes through the first guide vane assembly, it flows into the first air duct adjustment component 1311. The cross-sectional area of ​​the first air duct adjustment component 1311 gradually increases to guide the airflow to gradually disperse further, increase the flow range of the airflow in the radial direction, reduce the intensity of the airflow when it flows out, and make the airflow feel softer when it flows out of the diffuser assembly 131, thereby improving the diffuser effect of the diffuser assembly 131.

[0098] Reference Figure 16 In some embodiments of this utility model, the air dispersing component 131 includes an air dispersing mesh cover 1316, which includes first air outlet ribs 1317 arranged circumferentially, and the first air outlet ribs 1317 are used to disperse the airflow in a direction away from the axis of rotation.

[0099] Specifically, multiple first air outlet ribs 1317 are arranged sequentially at intervals in a direction parallel to the rotation center axis. Airflow can flow out of the air diffuser cover 1316 through the gap between adjacent first air outlet ribs 1317. The first air outlet ribs 1317 are constructed as straight ribs, which can play a certain role in dispersing airflow, thereby enabling the air diffuser cover 1316 to play the role of dispersing airflow.

[0100] Combination Figure 2 , Figure 3 and Figure 6 In some embodiments of this utility model, the wind concentrator 132 includes a second air duct adjuster 1321, and the cross-sectional area of ​​the second air duct adjuster 1321 gradually decreases in the direction toward the air outlet of the second air duct adjuster 1321.

[0101] Specifically, the second air duct adjuster 1321 has an air outlet on the side away from the drive fan blade 121 to facilitate airflow. In the axial direction extending from the drive fan blade 121 to the air outlet of the second adjuster, the radial distance between the inner wall surface of the second air duct adjuster 1321 and the extension line of the rotation center axis of the drive fan blade 121 gradually decreases, that is, the cross-sectional area of ​​the second air duct adjuster 1321 gradually decreases. The second air duct adjuster 1321 adjusts the circumferential velocity of the airflow to the axial velocity, and the airflow gradually concentrates, which is beneficial to increase the flow distance of the airflow in the air outlet direction and enhance the intensity of the airflow, making the airflow stronger when it flows out of the second air duct adjuster 1321.

[0102] Combination Figure 2 , Figure 3 and Figure 6 In some embodiments of this utility model, the wind concentrator 132 further includes: a second bracket 1322, the second bracket 1322 having an annular second mounting space 13221; a second air duct adjustment component 1321 disposed at the air outlet end of the second bracket 1322; and a plurality of second guide vanes 1323, the plurality of second guide vanes 1323 being circumferentially spaced within the second mounting space 13221, with the air outlet end of the second guide vanes 1323 guiding the air towards the rotation center axis.

[0103] Specifically, the second bracket 1322 can serve as the mounting carrier for the second air duct adjustment component 1321 and the second guide vane 1323. Multiple second guide vanes 1323 are arranged sequentially and spaced apart in the second mounting space 13221 along the circumferential direction, and a gap is formed between every two adjacent second guide vanes 1323. Airflow can flow through the gap between adjacent second guide vanes 1323. In the direction extending from the central axis of the second mounting space 13221, the air outlet end of the second guide vane 1323 is directed towards the rotation central axis relative to its air inlet end. The airflow converges towards the direction close to the rotation central axis, and the airflow velocity is high and the flow range is small, thereby achieving the converging effect of the second guide vane 1323 on the airflow.

[0104] Furthermore, the second air duct adjustment component 1321 is disposed at the air outlet end of the second bracket 1322, that is, the second air duct adjustment component 1321 is located on the air outlet side of the multiple second guide vanes 1323. After the airflow passes through the multiple second guide vanes 1323, it flows into the second air duct adjustment component 1321. The cross-sectional area of ​​the second air duct adjustment component 1321 gradually decreases. The second air duct adjustment component 1321 further adjusts the circumferential velocity component of the airflow to the axial velocity component, increases the flow distance of the airflow in the air outlet direction, enhances the airflow intensity, and improves the airflow convergence effect of the wind concentrator 132.

[0105] In some embodiments of this utility model, the wind concentrator 132 further includes: a second bracket 1322, the second bracket 1322 having a second installation space 13221; a second air duct adjuster 1321 disposed at the air outlet end of the second bracket 1322; and a second guide vane assembly disposed within the second installation space 13221. The second guide vane assembly includes multiple second front guide vanes and multiple second rear guide vanes, the multiple second front guide vanes being located in front of the air outlet of the multiple rear guide vanes, and the multiple second front guide vanes and the multiple second rear guide vanes being arranged opposite each other in the front-back direction.

[0106] Specifically, the second bracket 1322 can serve as the mounting carrier for the second air duct adjustment component 1321 and the second guide vane assembly. Multiple second front guide vanes are arranged sequentially at intervals along the circumferential direction, with a second front gap formed between every two adjacent second front guide vanes to allow airflow. Multiple second rear guide vanes are arranged sequentially at intervals along the circumferential direction, with a second rear gap formed between every two adjacent second rear guide vanes to allow airflow. The second front guide vanes and the second rear guide vanes are arranged axially within the second mounting space 13221. The second front guide vanes are located at the air outlet end of the second rear guide vanes. Airflow flows from the air inlet end of the second rear guide vanes into the second rear gap and then into the second front gap. Both the second rear guide vanes and the second front guide vanes can guide the airflow, thereby adjusting the direction of airflow.

[0107] Furthermore, in the extension direction of the central axis of the second installation space 13221, multiple second front guide vanes and multiple second rear guide vanes are arranged in a one-to-one correspondence. At this time, the second front gap and the second rear gap are directly opposite each other. After the airflow flows into the second rear gap and the second rear guide vane guides the airflow, the airflow continues to flow into the second front gap, so that the second front guide vane further guides the airflow. The circumferential velocity component of the airflow is converted into the axial velocity component, so that the airflow can first be concentrated in the direction of the central axis of the second installation space 13221. The second front gap and the second rear gap form a continuous flow space. The second front guide vane and the second rear guide vane can continuously guide the airflow to continuously adjust the airflow, improve the rectification effect of the second guide vane assembly on the airflow, thereby improving the effect of converting the circumferential velocity component of the airflow into the axial velocity component, reducing the flow area of ​​the airflow in the radial direction when it flows out of the second guide vane assembly, and making the circumferential velocity of the airflow large and the airflow strong when it flows out, thus realizing the converging effect of the second guide vane assembly on the airflow.

[0108] Furthermore, the second air duct adjustment component 1321 is disposed at the air outlet end of the second bracket 1322, that is, the second air duct adjustment component 1321 is located on the air outlet side of the second guide vane assembly. After the airflow passes through the second guide vane assembly, it flows into the second air duct adjustment component 1321. The cross-sectional area of ​​the second air duct adjustment component 1321 gradually decreases. The second air duct adjustment component 1321 further adjusts the circumferential velocity component of the airflow to the axial velocity component, increases the flow distance of the airflow in the air outlet direction, enhances the intensity of the airflow, and improves the converging effect of the wind gathering component 132 on the airflow.

[0109] Combination Figure 3 and Figure 4 In some embodiments of this utility model, the first air duct adjustment component 1311 and the second air duct adjustment component 1321 can both be composed of multiple circumferentially spaced blades 1301; or the first air duct adjustment component 1311 can be integrally formed into a cylindrical shape, and similarly, the second air duct adjustment component 1321 can be integrally formed into a cylindrical shape. The specific construction method of the first air duct adjustment component 1311 and the second air duct adjustment component 1321 can be determined according to the actual production and processing, and is not specifically limited here.

[0110] Reference Figure 17 In some embodiments of this utility model, the wind concentrator 132 includes a wind concentrator mesh cover 1324, which includes second air outlet ribs 1325 spaced apart along the circumference. The second air outlet ribs 1325 are used to converge the airflow toward the direction of the rotation center axis.

[0111] Specifically, multiple second air outlet ribs 1325 are arranged sequentially at intervals in a direction parallel to the rotation center axis. Airflow can flow out of the wind-gathering mesh 1324 through the gaps between adjacent second air outlet ribs 1325. The second air outlet ribs 1325 are constructed as arc-shaped ribs, which bend along the rotation direction of the drive fan blades 121. The arc-shaped ribs can guide the airflow towards the direction close to the rotation center axis, so that the airflow can converge in the direction of the rotation center axis, and the wind-gathering mesh 1324 can play the role of converging airflow.

[0112] In some embodiments of this utility model, when the airflow passes through the second air outlet rib 1325, the flow distance of the airflow in the direction parallel to the rotation center axis is greater than the distance of the airflow in the same direction when it passes through the first air outlet rib 1317. The guiding effect of the second air outlet rib 1325 on the airflow is better than that of the first air outlet rib 1317, and the effect of converting the circumferential velocity component of the airflow into the axial velocity component is better, so that the wind-gathering mesh cover 1324 can play a role in converging the airflow.

[0113] In some embodiments of this utility model, the wind pattern control component is threadedly engaged with the housing 110; or the wind pattern control component is magnetically engaged with the housing 110; or the wind pattern control component is plugged into the housing 110.

[0114] Specifically, the outer casing 110 is provided with a mounting part 112, and both the air dispersing component 131 and the air concentrating component 132 are provided with mounting mating parts 133. The mounting mating parts 133 can be detachably connected to the mounting part 112 so that the air pattern control component can be detachably connected to the outer casing 110.

[0115] Optionally, combined Figure 5 , Figure 6 as well as Figure 18 The mounting part 112 can be constructed as a plate structure. Similarly, the mounting mating part 133 can be constructed as a plate structure. Multiple mounting parts 112 and mounting mating parts 133 can be provided, with multiple mounting parts 112 and multiple mounting mating parts 133 being provided one-to-one. Threaded connectors can be passed through the mounting parts 112 and mounting mating parts 133 to fix the mounting parts 112 and mounting mating parts 133 together, thereby realizing the detachable connection between the wind pattern control component and the housing 110, so as to facilitate the disassembly, assembly or replacement of the wind pattern control component.

[0116] Optionally, combined Figure 10 and Figure 11 as well as Figure 20 The mounting part 112 can be configured with an internal thread, and the mounting mating part 133 can be configured with an external thread. The wind pattern control component and the housing 110 can be threadedly connected, thereby realizing the detachable connection between the wind pattern control component and the housing 110, so as to facilitate the disassembly, assembly or replacement of the wind pattern control component.

[0117] Optionally, combined Figures 7 to 9 as well as Figure 19 The mounting part 112 can be configured as a plug-in slide, and the mounting mating part 133 can be configured as a ball head structure extending in the axial direction. The mounting mating part 133 is located at the air inlet end of the wind pattern control component. The ball head structure can be inserted into the plug-in slide at a certain angle and the wind pattern control component is fixed to the housing 110 by rotation, so that the wind pattern control component and the housing 110 are detachably connected, so as to facilitate the disassembly or replacement of the wind pattern control component. When it is necessary to disassemble the wind pattern control component from the housing 110, the wind pattern control component can be rotated in the opposite direction and the ball head structure can be pulled out from the plug-in slide.

[0118] Optionally, combined Figures 12 to 14 as well as Figure 21 and Figure 22 The mounting part 133 can be configured as a magnet base, and the mounting part 112 can be configured as a mating magnet. The mounting part 112 and the mounting part 133 can be magnetically mated so that the wind pattern control component can be detachably connected to the housing 110, so as to facilitate the disassembly or replacement of the wind pattern control component.

[0119] It is understood that the above-mentioned detachable connection method is only some embodiments of this utility model. The wind pattern control mechanism can also be detachably connected to the outer shell in other ways. Taking the air diffuser assembly 131 as an example, the air diffuser cover 1316 and the first bracket 1313 can be respectively provided with mounting mating parts 133. The outer shell 110 is provided with multiple mounting parts 112. The multiple mounting parts 112 are arranged in two layers to form a first mounting position 115 and a second mounting position 116 respectively. The air diffuser cover 1316 and the first bracket 1313 can be detachably connected to the outer shell 110 respectively. The mounting mating parts 133 on the first bracket 1313 and the mounting mating parts 133 on the air diffuser cover 1316 can be constructed differently so that the first bracket 1313 and the air diffuser cover 1316 can be detachably connected to the outer shell through different connection methods.

[0120] It is understandable that the wind-gathering mesh cover 1324 and the second bracket 1322 can be arranged in the same way as the wind-diffusing mesh cover 1316 and the mounting and mating part 133 of the first bracket 1313, and will not be described in detail here.

[0121] In some embodiments of this utility model, the fan further includes a drive fan 120, which is an axial flow fan.

[0122] Specifically, the drive fan 120 is used to drive the drive blades 121. The drive fan 120 is an axial flow fan. The drive blades 121 of the drive fan 120 extend obliquely in the radial direction. When multiple drive blades 121 rotate, the air on the side of the drive blades 121 away from the wind pattern control component is driven to flow through the guide vane assembly to form an airflow. When the airflow flows through the drive blades 121, the drive blades 121 can guide the airflow to form an oblique airflow. At this time, the airflow has a component velocity in the axial direction and a component velocity in the circumferential direction.

[0123] The drive fan blade 121 can be installed inside the housing 110 to ensure the airflow effect. The drive fan 120 can be installed inside or outside the housing 110. The specific arrangement of the drive fan 120 can be determined according to the actual assembly requirements and is not specifically limited here.

[0124] Combination Figure 1 and Figure 15 In some embodiments of this utility model, the fan 100 further includes an air outlet cover 140, which is disposed in the air outlet area 114.

[0125] Specifically, the air outlet cover 140 is installed on the outer casing 110 and located in the air outlet area 114. The air outlet cover 140 has a mesh structure, through which airflow can be discharged. At the same time, the air outlet cover 140 can cover the internal structure of the fan 100, preventing the drive blade 121 from breaking and flying out through the opening when the fan 100 is working, thus preventing injury to the user. It can also prevent the user from being injured by accidentally touching the drive blade 121, improving the safety of the fan 100. In addition, the air outlet cover 140 can also reduce the accumulation of dust and other debris inside the fan 100.

[0126] Reference Figure 15 In some embodiments of this utility model, the air outlet mesh cover 140 includes a middle region 141 and an outer ring region 142. The air guide ribs 143 of the middle region 141 are formed as arc-shaped ribs 1431, and the air guide ribs 143 of the outer ring region 142 are formed as straight ribs 1432.

[0127] Specifically, the middle area 141 and the outer ring area 142 are constructed in a ring shape, and the middle area 141 and the outer ring area 142 are arranged coaxially. The outer ring area 142 is fitted outside the middle area 141 to realize the partition design of the air outlet mesh cover 140, which is not only aesthetically pleasing, but also makes the air outlet area 114 visible.

[0128] Furthermore, since the outlet areas of the first air duct adjustment component 1311 and the second air duct adjustment component 1321 are different, the air outlet area 114 corresponding to the outlet of the first air duct adjustment component 1311 when the fan 100 is in the air dispersion mode is different from the air outlet area 114 corresponding to the second air duct adjustment component 1321 when the fan 100 is in the air concentration mode. The outlet of the second air duct adjustment component 1321 can be directly opposite to the middle area 141410. The middle area 141 of the air outlet mesh cover 140 can further rectify the airflow and further improve the axial velocity of the airflow. The outlet of the first air duct adjustment component 1311 can be directly opposite to both the outer ring area 142 and the middle area 141 at the same time.

[0129] Furthermore, the air guide ribs 143 in the middle region 141 are formed as arc-shaped ribs 1431, and the air guide ribs 143 in the outer ring region 142 are formed as straight ribs 1432. The arc-shaped ribs 1431 can be designed using the Archimedes spiral principle. Multiple arc-shaped ribs 1431 are evenly spaced along the circumferential direction, and the bulging direction of the arc-shaped ribs 1431 is the same. The arc-shaped ribs 1431 can effectively reduce the resistance of the air guide ribs 143 to the airflow, thereby effectively reducing the resistance of the air outlet mesh cover 140 to the airflow.

[0130] When the fan 100 is in the wind-gathering mode, the air outlet of the second air duct adjustment component 1321 is directly opposite to the middle area 141. After the airflow flows out of the air outlet, it flows to the middle area 141. The arc-shaped rib 1431 can rectify the airflow to convert the circumferential velocity of the airflow into the axial velocity, thereby ensuring the airflow gathering effect and making the airflow of the fan 100 stronger.

[0131] Furthermore, the outer ring region 142 is provided with straight ribs 1432 extending in the radial direction. Multiple straight ribs 1432 are evenly spaced in the axial direction. When the fan 100 is in the air dissipation mode, the air outlet of the first air duct adjustment component 1311 is simultaneously positioned opposite to both the outer ring region 142 and the middle region 141. After the airflow exits from the air outlet, it flows to the outer ring region 142 and the middle region 141. The straight ribs 1432 can maintain the component velocity of the airflow in the circumferential direction, thereby ensuring the flow area of ​​the airflow in the radial direction and ensuring the air outlet area of ​​the fan 100 in the radial direction.

[0132] In some embodiments of this utility model, in the axial direction away from the outer casing 110, the air outlet end of the straight rib 1432 extends outward at an angle away from the rotation center axis of the drive fan blade 121.

[0133] It should be noted that, in the direction in which the straight rib 1432 extends, the end of the straight rib 1432 away from the bracket is defined as the air outlet end of the straight rib 1432, and the end of the straight rib 1432 close to the outer casing 110 is defined as the air inlet end of the straight rib 1432.

[0134] Specifically, in the radial direction of the air outlet area 114, the distance between the air inlet end of the straight rib 1432 and the rotation center axis of the drive fan blade 121 is the smallest, and the distance between the air outlet end of the straight rib 1432 and the rotation center axis of the drive fan blade 121 is the largest. This achieves an angled arrangement between the straight rib 1432 and the rotation center axis of the drive fan blade 121. The straight rib 1432 generates little resistance to the airflow and maintains the circumferential velocity of the airflow, which helps to ensure the air outlet area of ​​the fan 100 in the radial square.

[0135] In some embodiments of this utility model, the angle of inclination of the straight rib 1432 relative to the rotation center line ranges from 20° to 40°.

[0136] Specifically, the angle between the straight rib 1432 and the rotation center line is in the range of 20°-40°. This setting can further ensure that the straight rib 1432 has low resistance to airflow and maintains the circumferential velocity of airflow, which is conducive to ensuring the air outlet area of ​​the fan 100 in the radial square.

[0137] In some embodiments of this utility model, the air outlet mesh cover 140 is detachably disposed on the outer shell 110.

[0138] Specifically, the air outlet grille 140 can be fastened to the housing 110 to cover the opening and prevent the fan 100 from causing mechanical injury to the user. The air outlet grille 140 is detachably connected to the housing 110. When the fan 100 malfunctions, the air outlet grille 140 can be removed from the housing 110 to facilitate the inspection and maintenance of the airflow control components, thereby improving the maintenance convenience of the fan 100.

[0139] The air outlet grille 140 can be detachably connected to the outer casing 110 by means of threaded connection or snap-fit. The specific connection method between the air outlet grille 140 and the outer casing 110 is not specifically limited here, as long as the air outlet grille 140 and the outer casing 110 are detachably connected.

[0140] In some embodiments of this utility model, a rear mesh cover is provided on the rear side of the fan 100, and the air inlet area 113 can be formed on the rear mesh cover. Outside air can flow into the fan 100 through the rear mesh cover. The drive fan blade 121 can drive the drive fan blade 121 to rotate so that the air flowing into the fan 100 forms an airflow and blows it out. The airflow can flow through the wind pattern control component, which can make the airflow diverge or converge. Then the airflow flows out of the fan 100 through the air outlet mesh cover 140.

[0141] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0142] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan, characterized in that, include: An outer casing, wherein an assembly space is formed within the outer casing; A drive fan blade is mounted in the assembly space and has a rotational central axis. A wind pattern control component is detachably disposed on the housing. The wind pattern control component is located on the air outlet side of the drive fan blade. The wind pattern control component is configured to converge the airflow from the drive fan blade toward the rotation center axis or diverge in a direction away from the rotation center axis.

2. The fan according to claim 1, characterized in that, The wind pattern control component includes a wind dispersion component and a wind convergence component. The wind dispersion component is used to guide the airflow in a direction away from the rotation center axis to make the airflow disperse. The wind convergence component is used to guide the airflow in a direction towards the rotation center axis to make the airflow converge. The wind dispersion component and the wind convergence component are interchangeably disposed on the housing.

3. The fan according to claim 2, characterized in that, The wind pattern control component includes various air diffuser components of different shapes, and these various air diffuser components are interchangeably disposed on the housing; and / or The wind pattern control component includes various wind-gathering components of different shapes, and these wind-gathering components are interchangeably disposed on the housing.

4. The fan according to claim 3, characterized in that, In a direction parallel to the axis of rotation, the housing is provided with a first mounting position and a second mounting position spaced apart, the first mounting position and the second mounting position being used to install the air dispersing component; or the first mounting position and the second mounting position being used to install the air concentrating component.

5. The fan according to claim 2, characterized in that, The air dissipation assembly includes a first air duct adjustment component, the cross-sectional area of ​​which gradually increases in the direction toward the air outlet of the first air duct adjustment component.

6. The fan according to claim 5, characterized in that, The air distribution assembly also includes: The first bracket has an annular first installation space inside, and the first air duct adjustment component is disposed on the first bracket and located at the air outlet end of the first bracket. Multiple first guide vanes are circumferentially spaced within the first installation space, and the air outlet end of the first guide vane extends outward at an angle relative to the air inlet end of the first guide vane toward the inner circumferential wall of the first installation space.

7. The fan according to claim 5, characterized in that, The air distribution assembly also includes: The first bracket has an annular first installation space inside, and the first air duct adjustment component is disposed on the first bracket and located at the air outlet end of the first bracket. The first guide vane assembly is disposed within the first installation space. The first guide vane assembly includes a plurality of first front guide vanes and a plurality of first rear guide vanes. The plurality of first front guide vanes are located on the air outlet front side of the plurality of rear guide vanes, and the plurality of first front guide vanes and the plurality of first rear guide vanes are offset in the circumferential direction.

8. The fan according to claim 2, characterized in that, The air dispersing assembly includes an air dispersing mesh cover, which includes first air outlet ribs spaced apart circumferentially. The first air outlet ribs are used to disperse the airflow in a direction away from the axis of rotation.

9. The fan according to any one of claims 2-7, characterized in that, The air-gathering component includes a second air duct adjustment element, and the cross-sectional area of ​​the second air duct adjustment element gradually decreases in the direction toward the air outlet of the second air duct adjustment element.

10. The fan according to claim 9, characterized in that, The wind concentrator also includes: The second bracket has an annular second mounting space inside; the second air duct adjustment component is located at the air outlet end of the second bracket. Multiple second guide vanes are arranged circumferentially within the second mounting space, with the air outlet of the second guide vanes facing the rotation center axis.

11. The fan according to claim 9, characterized in that, The wind concentrator also includes: The second bracket has a second mounting space inside; the second air duct adjustment component is located at the air outlet end of the second bracket. The second guide vane assembly is disposed within the second installation space. The second guide vane assembly includes a plurality of second front guide vanes and a plurality of second rear guide vanes. The plurality of second front guide vanes are located on the air outlet front side of the plurality of rear guide vanes, and the plurality of second front guide vanes and the plurality of second rear guide vanes are arranged facing each other in the front-back direction.

12. The fan according to claim 2, characterized in that, The wind-gathering component includes a wind-gathering mesh cover, which includes second air outlet ribs spaced apart along the circumference. The second air outlet ribs are used to converge the airflow toward the direction of the rotation center axis.

13. The fan according to claim 1, characterized in that, The wind pattern control component is threadedly engaged with the housing; or The wind pattern control component is magnetically attached to the outer casing; or The wind pattern control component is inserted into the housing.

14. The fan according to claim 1, characterized in that, It also includes a drive fan, which is an axial flow fan.

15. The fan according to claim 1, characterized in that, It also includes an air outlet mesh cover, the outer shell having an air inlet area and an air outlet area, the air outlet mesh cover being disposed in the air outlet area.

16. The fan according to claim 15, characterized in that, The air outlet grille includes a middle area and an outer ring area. The air guide ribs in the middle area are formed into arc-shaped ribs, and the air guide ribs in the outer ring area are formed into straight ribs.

17. The fan according to claim 16, characterized in that, In the axial direction away from the outer casing, the air outlet end of the straight rib extends outward at an angle away from the rotation center line of the drive fan blade.

18. The fan according to claim 17, characterized in that, The angle of inclination of the straight rib relative to the rotation center line ranges from 20° to 40°.

19. The fan according to claim 15, characterized in that, The air outlet mesh is detachably mounted on the outer casing.

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