Air pattern control mechanism and fan

Abstract

An air pattern control mechanism (100) and a fan (1000). The air pattern control mechanism (100) comprises: a support (110); and an airflow adjusting member (120), the airflow adjusting member (120) being arranged in an air channel space (111). The airflow adjusting member (120) comprises multiple guide vanes (1201) arranged in the front-rear direction. The multiple guide vanes (1201) comprise a plurality of front side guide vanes (121) and a plurality of rear side guide vanes (122), the plurality of front side guide vanes (121) and the plurality of rear side guide vanes (122) being rotatable with respect to each other. The airflow adjusting member (120) has a first state in which the plurality of front side guide vanes (121) and the plurality of rear side guide vanes (122) at least partially overlap each other in the front-rear direction, and a second state in which the plurality of front side guide vanes (121) and the plurality of rear side guide vanes (122) are offset with respect to each other in the circumferential direction.

Description

Wind pattern control mechanism and fan

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202311874241.4, filed on December 29, 2023, entitled "Wind Pattern Control Mechanism and Fan", and Chinese Patent Application No. 202410194268.7, filed on February 21, 2024, entitled "Wind Pattern Control Mechanism and Fan". Technical Field

[0003] This application relates to the field of household appliance technology, and in particular to a wind pattern control mechanism and a fan. Background Technology

[0004] As people's living standards continue to rise, consumers' demands for fans are also increasing.

[0005] In related technologies, fans are equipped with guide mechanisms for adjusting airflow direction. However, the working state of the guide mechanism cannot be adjusted, resulting in a limited airflow range and a single airflow feel that cannot meet user needs. At the same time, the complex structure of the guide mechanism leads to high production costs and low processing efficiency for the fan.

[0006] Application content

[0007] This application aims to at least partially address one of the technical problems in the related art.

[0008] Therefore, this application proposes a wind pattern control mechanism whose working state can be adjusted, thereby realizing the adjustment of the airflow feel and airflow range. At the same time, the wind pattern control mechanism has a simple structure and is easy to manufacture.

[0009] This application further proposes a fan.

[0010] The wind pattern control mechanism according to this application includes: a support frame having an annular air duct space; and an airflow regulating component disposed within the air duct space. The airflow regulating component includes multiple layers of guide vanes arranged in a front-to-back direction. The multiple layers of guide vanes include multiple front guide vanes and multiple rear guide vanes. The multiple front guide vanes are located in front of the air outlet of the multiple rear guide vanes and are rotatable relative to each other. The multiple front guide vanes are spaced apart circumferentially, and the multiple rear guide vanes are spaced apart circumferentially. The airflow regulating component has a first state and a second state. In the first state, the multiple front guide vanes and the multiple rear guide vanes are at least partially overlapped in the front-to-back direction. In the second state, the multiple front guide vanes and the multiple rear guide vanes are staggered in the circumferential direction.

[0011] Therefore, according to the wind pattern control mechanism of this application, by setting an airflow regulating component, the wind pattern control mechanism can adjust the air outlet range and air outlet intensity. When the airflow regulating component is in the first state, the front guide vane and the rear guide vane are arranged opposite each other in the front-rear direction. The front guide vane and the rear guide vane can continuously guide the airflow, and the circumferential velocity of the airflow is converted into the axial velocity. The airflow is in a converging state when it flows out, and the air outlet intensity is high. In the second state, the airflow regulating component has a small rectification effect on the airflow. When the airflow flows through the airflow regulating component, it can maintain the circumferential velocity of the airflow, so that the airflow can be in a conical shape when it flows out of the airflow regulating component, ensuring the divergent state of the airflow when it flows out. Moreover, the airflow regulating component can switch between the first state and the second state, so that the wind pattern control mechanism has different working states. Users can adjust the working state of the wind pattern control mechanism according to actual needs to meet user needs. At the same time, the structure of the wind pattern control mechanism of this application is simple, which is conducive to reducing the production cost of the wind pattern control mechanism and improving production efficiency.

[0012] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the wind pattern control mechanism described in the embodiment of this application when it is in the wind-gathering state;

[0014] Figure 2 is a cross-sectional view of Figure 1 at point AA;

[0015] Figure 3 is a schematic diagram of the wind pattern control mechanism described in the embodiment of this application when it is in the air dispersion state;

[0016] Figure 4 is a cross-sectional view at point BB in Figure 3;

[0017] Figure 5 is a simulation analysis comparison diagram of the airflow passing through the airflow regulator according to the embodiment of this application. Figure A is a simulation analysis streamline diagram when the airflow regulator is in the second state, and Figure B is a simulation analysis streamline diagram when the airflow regulator is in the first state.

[0018] Figure 6 is a simulation analysis comparison diagram of the airflow passing through the airflow regulator according to the embodiment of this application. In the figure, Figure C is the simulation analysis cloud diagram when the airflow regulator is in the second state, and Figure D is the simulation analysis cloud diagram when the airflow regulator is in the first state.

[0019] Figure 7 is a schematic diagram of the structure of the pendulum blade described in an embodiment of this application;

[0020] Figure 8 is a schematic diagram of the structure of the swing blade described in an embodiment of this application;

[0021] Figure 9 is a schematic diagram of the structure of the fixing ring described in an embodiment of this application;

[0022] Figure 10 is a schematic diagram of the structure of the rotating ring described in an embodiment of this application;

[0023] Figure 11 is a schematic diagram of the cooperation between the rotating ring and the driving device according to an embodiment of this application;

[0024] Figure 12 is an assembly diagram of the duct adjustment component, bracket, and airflow adjustment component described in the embodiments of this application;

[0025] Figure 13 is a schematic diagram of the assembly of the wind pattern control mechanism and the outer shell according to an embodiment of this application;

[0026] Figure 14 is a simulation analysis comparison diagram of the airflow through the airflow regulating component and the duct regulating component described in the embodiments of this application. In the figure, Figure E is a simulation analysis streamline diagram of the wind pattern control mechanism in the wind dispersion mode, and Figure F is a simulation analysis streamline diagram of the wind pattern control mechanism in the wind gathering mode.

[0027] Figure 15 is a schematic diagram of the fan structure according to an embodiment of this application;

[0028] Figure 16 is a cross-sectional view at CC in Figure 15;

[0029] Figure 17 is a schematic diagram of the structure of the outer shell according to an embodiment of this application;

[0030] Figure 18 is a structural schematic diagram of the air outlet mesh cover described in the embodiment of this application;

[0031] Figure 19 is an enlarged view of point K in Figure 2. Detailed Implementation

[0032] The embodiments of this application 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 intended to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, 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 used only for the convenience of describing this application 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 application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0034] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The wind pattern control mechanism 100 and fan 1000 according to embodiments of this application are described below with reference to Figures 1-19.

[0036] Referring to Figures 1 to 4, the wind pattern control mechanism 100 according to this application includes: a support 110 and an airflow regulating component 120. The support 110 is provided with an annular air duct space 111. The airflow regulating component 120 is disposed in the air duct space 111. The airflow regulating component 120 includes multiple layers of guide vanes 1201 arranged in the front-rear direction. The multiple layers of guide vanes 1201 include multiple front guide vanes 121 and multiple rear guide vanes 122. The multiple front guide vanes 121 are located in front of the air outlet of the multiple rear guide vanes 122 and can rotate relative to each other. The multiple front guide vanes 121 are arranged at intervals along the circumference, and the multiple rear guide vanes 122 are arranged at intervals along the circumference. The airflow regulating component 120 has a first state and a second state. In the first state, the multiple front guide vanes 121 and the multiple rear guide vanes 122 are at least partially overlapped in the front-rear direction. In the second state, the multiple front guide vanes 121 and the multiple rear guide vanes 122 are staggered in the circumference.

[0037] The multi-layer guide vane 1201 comprises at least two layers of guide vanes 1201, that is, the multi-layer guide vane 1201 can be two, three, or four layers of guide vanes 1201 arranged in the front-to-back direction. It should also be noted that each layer of guide vanes includes multiple guide vanes arranged at intervals along the circumference, that is, multiple front guide vanes 121 are located in the same layer, and multiple rear guide vanes 122 are located in the same layer.

[0038] The bracket 110 provides an installation position for the airflow regulating component 120. The bracket 110 has an annular air duct space 111. Multiple front guide vanes 121 are arranged sequentially at intervals along the circumferential direction. A front gap is formed between every two adjacent front guide vanes 121 to allow airflow to pass through. Multiple rear guide vanes 122 are arranged sequentially at intervals along the circumferential direction. A rear gap is formed between every two adjacent rear guide vanes 122 to allow airflow to pass through. The front guide vanes 121 and rear guide vanes 122 are arranged axially within the air duct space 111. The front guide vanes 121 are located at the air outlet of the rear guide vanes 122. Airflow flows from the air inlet of the rear guide vanes 122, through the rear guide vanes 122, and through the air outlet of the rear guide vanes 122 into the gap between the multiple front guide vanes 121. Both the rear guide vanes 122 and the front guide vanes 121 can guide the airflow, thereby adjusting the direction of airflow.

[0039] The airflow regulating component 120 has a first state and a second state. The multiple front guide vanes 121 and the multiple rear guide vanes 122 can move relative to each other to facilitate switching between the first state and the second state. Referring to Figures 1 and 2, in the first state, the multiple front guide vanes 121 and the multiple rear guide vanes 122 are arranged one-to-one in the direction extending from the central axis of the air duct space 111, and at least part of the multiple front guide vanes 121 and the multiple rear guide vanes 122 are arranged to overlap. That is, at least part of the orthographic projection of the multiple front guide vanes 121 in the direction extending from the central axis of the air duct space 111 overlaps with the orthographic projection of the multiple rear guide vanes 122 in the direction extending from the central axis of the air duct space 111. For example, the ends of the multiple front guide vanes 121 in the direction extending from the central axis of the air duct space 111 and the ends of the multiple rear guide vanes 122 in the direction extending from the central axis of the air duct space 111 can overlap, or the multiple front guide vanes 121 and the multiple rear guide vanes 122 are arranged facing each other.

[0040] When multiple front guide vanes 121 and multiple rear guide vanes 122 are arranged one-to-one, the front gap and the rear gap are directly opposite each other. After the airflow flows into the rear gap and the rear guide vane 122 guides the airflow, the airflow continues to flow into the front gap, which further guides the airflow. The circumferential velocity of the airflow is converted into the axial velocity, allowing the airflow to concentrate towards the central axis of the air duct space 111. The front gap and the rear gap form a continuous flow space. The front guide vanes 121 and the rear guide vanes 122 can continuously guide the airflow to continuously adjust the airflow, improve the rectification effect of the airflow regulating component 120 on the airflow, improve the effect of converting the circumferential velocity of the airflow into the axial velocity, reduce the flow area of ​​the airflow in the radial direction when it flows out of the airflow regulating component 120, so that the airflow after it flows out is similar to a cylinder, and the axial velocity of the airflow when it flows out is large, resulting in a large airflow intensity.

[0041] The airflow passing through the wind-type control mechanism 100 is spiral-shaped, and it has circumferential velocity and axial velocity.

[0042] Referring to Figures 3 and 4, in the second state, in the direction of the extension of the central axis of the air duct space 111, the orthographic projection of each rear guide vane 122 is located between the orthographic projections of every two adjacent front guide vanes 121. That is, the rear guide vanes 122 are arranged opposite to the front gap in the axial direction, thereby realizing that multiple front guide vanes 121 and multiple rear guide vanes 122 are staggered in the circumferential direction. The front gap and the rear gap are staggered, and the front guide vanes 121 and the rear guide vanes 122 cannot continuously guide the airflow. Compared with the first state, the guiding time of the rear guide vane 122 for the airflow is short when the airflow flows into the rear gap. Similarly, the guiding time of the front guide vane 121 for the airflow is short when the airflow flows into the front gap. The rectification effect of the airflow regulating component 120 on the airflow is reduced overall. When the airflow flows through the airflow regulating component 120, it can maintain the circumferential velocity of the airflow, so that the airflow out of the airflow regulating component 120 presents a cone-like shape, ensuring the divergent state of the airflow when it flows out.

[0043] The dimension of the front clearance in the direction parallel to the central axis of the air duct space 111 is the length dimension of the front clearance, and the dimension of the rear clearance in the direction parallel to the central axis of the air duct space 111 is the length dimension of the rear clearance.

[0044] In related technologies, fans are equipped with guide mechanisms for adjusting airflow direction. However, the working state of the guide mechanism cannot be adjusted, resulting in the inability to adjust the fan's blowing range and airflow feel, which fails to meet user needs and affects the user experience.

[0045] This application incorporates an airflow regulating component 120, which includes a front guide vane 121 and a rear guide vane 122. In a first state, the front guide vane 121 and the rear guide vane 122 are positioned opposite each other in the front-rear direction, continuously guiding the airflow. This improves the guiding effect of the airflow regulating component 120, enhances the conversion of the circumferential velocity component of the airflow into the axial velocity component, reduces the radial flow area of ​​the airflow as it exits the airflow regulating component 120, and results in a high axial velocity at the exit of the airflow, leading to a converging airflow and a strong exhaust airflow intensity. In a second state, the airflow regulating component... The section 120 has a small rectifying effect on the airflow. When the airflow passes through the airflow regulating component 120, it can maintain the circumferential velocity of the airflow, so that the airflow can be conical when it flows out of the airflow regulating component 120, ensuring the divergent state of the airflow when it flows out. Thus, the wind pattern regulating mechanism 100 can adjust the airflow range and airflow intensity. Moreover, the working state of the wind pattern regulating mechanism 100 can be switched. Users can adjust the working state of the wind pattern regulating mechanism 100 according to actual usage needs to meet different user requirements. At the same time, the structure of the wind pattern regulating mechanism 100 of this application is simple, which is conducive to reducing the production cost of the wind pattern regulating mechanism 100 and improving production efficiency.

[0046] According to the wind pattern control mechanism 100 of this application, by setting the airflow regulating component 120, the wind pattern control mechanism 100 can adjust the air outlet range and air outlet intensity. When the airflow regulating component 120 is in the first state, the front guide vane 121 and the rear guide vane 122 are arranged opposite each other in the front-rear direction. The front guide vane 121 and the rear guide vane 122 can continuously guide the airflow, and the circumferential velocity component of the airflow is converted into the axial velocity component. The airflow is in a converging state when it flows out, and the air outlet intensity is high. In the second state, the airflow regulating component 120 has a small rectification effect on the airflow, and the airflow flows through... When the airflow regulator 120 is in operation, it can maintain the circumferential velocity of the airflow, so that the airflow can be conical when it flows out of the airflow regulator 120, ensuring the divergent state of the airflow when it flows out. Furthermore, the airflow regulator 120 can switch between a first state and a second state, so that the wind pattern control mechanism 100 has different working states. Users can adjust the working state of the wind pattern control mechanism 100 according to actual needs to meet their usage requirements. At the same time, the structure of the wind pattern control mechanism 100 of this application is simple, which helps to reduce the production cost of the wind pattern control mechanism 100 and improve production efficiency.

[0047] In some embodiments of this application, in a first state, a plurality of front guide vanes 121 and a plurality of rear guide vanes 122 are arranged facing each other in the front-rear direction, and in a second state, a plurality of front guide vanes 121 and a plurality of rear guide vanes 122 are arranged in a staggered manner in the circumferential direction.

[0048] Referring to Figures 1 and 2, in the first state, multiple front guide vanes 121 and multiple rear guide vanes 122 are arranged one-to-one along the direction extending from the central axis of the air duct space 111. At this time, the front gap and the rear gap are directly opposite each other. After the airflow flows into the rear gap and the rear guide vane 122 guides the airflow, the airflow continues to flow into the front gap, which further guides the airflow. The circumferential velocity component of the airflow is converted into the axial velocity component, allowing the airflow to concentrate towards the central axis of the air duct space 111. The front gap and the rear gap form a continuous flow space. The front guide vane 121 and the rear guide vane 122 can continuously guide the airflow to continuously adjust the airflow, improve the rectification effect of the airflow regulating component 120 on the airflow, improve the effect of converting the circumferential velocity component of the airflow into the axial velocity component, reduce the flow area in the radial direction when the airflow flows out of the airflow regulating component 120, so that the airflow after flowing out is generally cylindrical, and the axial velocity of the airflow when flowing out is large, resulting in a large airflow intensity.

[0049] The airflow passing through the wind-type control mechanism 100 is spiral-shaped, and it has circumferential velocity and axial velocity.

[0050] Referring to Figures 3 and 4, in the second state, in the direction of the extension of the central axis of the air duct space 111, the orthographic projection of each rear guide vane 122 is located between the orthographic projections of every two adjacent front guide vanes 121. That is, the rear guide vanes 122 are arranged opposite to the front gap in the axial direction, thereby realizing that multiple front guide vanes 121 and multiple rear guide vanes 122 are staggered in the circumferential direction. The front gap and the rear gap are staggered, and the front guide vanes 121 and the rear guide vanes 122 cannot continuously guide the airflow. Compared with the first state, the guiding time of the rear guide vane 122 for the airflow is short when the airflow flows into the rear gap. Similarly, the guiding time of the front guide vane 121 for the airflow is short when the airflow flows into the front gap. The rectification effect of the airflow regulating component 120 on the airflow is reduced overall. When the airflow flows through the airflow regulating component 120, it can maintain the circumferential velocity of the airflow, so that the airflow out of the airflow regulating component 120 presents a cone-like shape, ensuring the divergent state of the airflow when it flows out.

[0051] The dimension of the front clearance in the direction parallel to the central axis of the air duct space 111 is the length dimension of the front clearance, and the dimension of the rear clearance in the direction parallel to the central axis of the air duct space 111 is the length dimension of the rear clearance.

[0052] Referring to Figures 5 and 6, through simulation analysis of the wind pattern control mechanism 100 of this application, as shown in Figure 5 (B) and Figure 6 (D), in the first state, at the standard test distance, the air outlet range of the wind pattern control mechanism 100 is 0.13 m², and the average wind speed within the air outlet range is 2.02 m / s. As shown in Figure 5 (A) and Figure 6 (C), in the second state, at the standard test distance, the air outlet range of the wind pattern control mechanism 100 is 0.23 m², and the average wind speed within the air outlet range is 1.36 m / s.

[0053] The air outlet range refers to the area with a wind speed greater than 0.4 m / s. The "standard test distance" can be three times the diameter of the circle containing multiple blade tips 311, so as to facilitate simulation and test comparison of the wind pattern control mechanism 100.

[0054] Of course, when simulating and testing the wind pattern control mechanism 100, it is not limited to measuring at the above-mentioned "standard test distance". As long as the air outlet effect of the wind pattern control mechanism 100 in the first and second states is measured at the same location, it is sufficient.

[0055] Combining Figures 5 and 6 and the data above, it can be seen that when the wind pattern control mechanism 100 is in the first state, the air outlet range of the wind pattern control mechanism 100 is small, the wind speed is high, and the air outlet is strong. When the wind pattern control mechanism 100 is in the second state, the air outlet range of the wind pattern control mechanism 100 is large, the wind speed is low, and the air outlet is gentle. Furthermore, the air outlet feel of the wind pattern control mechanism 100 in different states has obvious differences, which improves the user experience.

[0056] Referring to Figures 1 to 4 and Figure 19, in some embodiments of this application, a gap S, S < 3 mm, is formed between the front guide vane 121 and the rear guide vane 122 in a direction parallel to the first central axis. A gap S ≤ 1.6 mm is also formed between the front guide vane 121 and the rear guide vane 122.

[0057] Under the premise of ensuring that the front guide vane 121 and the rear guide vane 122 do not collide, the gap between the front guide vane 121 and the rear guide vane 122 should be as small as possible to prevent airflow from escaping from the gap between the front guide vane 121 and the rear guide vane 122, which is conducive to ensuring the wind gathering effect of the airflow regulating component 120.

[0058] S is 0.5mm to prevent airflow from escaping from the gap between the front guide vane 121 and the rear guide vane 122. At the same time, it can effectively prevent collisions when the front guide vane 121 and the rear guide vane 122 move relative to each other, ensuring the normal operation of the airflow regulating component 120.

[0059] Referring to Figures 1 to 4 and Figure 19, in some embodiments of this application, the front guide vane 121 and the rear guide vane 122 are provided with a guide angle 1204 at one end that is opposite to each other in a direction parallel to the first central axis.

[0060] In the direction extending from the front guide vane 121 to the rear guide vane 122, the cross-sectional area of ​​the end of the front guide vane 121 near the rear guide vane 122 gradually decreases. Similarly, in the direction extending from the rear guide vane 122 to the front guide vane 121, the cross-sectional area of ​​the end of the rear guide vane 122 near the front guide vane 121 gradually decreases. This results in a guide angle 1204 being formed at the ends of the front guide vane 121 and the rear guide vane 122 that are directly opposite each other. By setting the guide angle 1204, the smoothness of airflow within the airflow regulating member 120 can be effectively improved, and the noise generated by the airflow can be reduced.

[0061] Referring to Figures 1 to 4, the wind pattern control mechanism 100 according to this application includes: an air duct 101 having an air inlet side and an air outlet side, the air duct 101 restricting airflow from the air inlet side to the air outlet side; and an airflow regulating member 120 disposed in the air duct 101, for example, located at the air duct outlet of the air duct 101, the airflow regulating member 120 having a first central axis, the airflow regulating member 120 including a plurality of guide vanes 1201 spaced apart around the first central axis, the airflow regulating member 120 having a first state and a second state, a first airflow passage orifice 1202 defined between adjacent guide vanes 1201 in the first state, and a second airflow passage orifice 1203 defined between adjacent guide vanes 1201 in the second state, wherein the length of the first airflow passage orifice 1202 is greater than the length of the second airflow passage orifice 1203 in a direction parallel to the first central axis.

[0062] The wind pattern control mechanism 100 is provided with a wind duct 101, and the airflow can flow from the air inlet side of the wind duct 101 to the air outlet side of the wind duct 101. The wind duct 101 can restrict the flow direction of the airflow, prevent the airflow from diverging, and ensure the air outlet effect of the wind pattern control mechanism 100.

[0063] An airflow regulating component 120 is disposed within the air duct 101 to guide the airflow flowing into the air duct 101. The airflow regulating component 120 includes a plurality of guide vanes 1201, which extend radially outward around a first central axis. A gap is formed between every two adjacent guide vanes 1201. The airflow can flow through the gap between two adjacent guide vanes 1201 and pass through the guide vanes 1201, so that the guide vanes 1201 can guide the airflow and convert its circumferential velocity into its axial velocity, allowing the airflow to flow towards the direction closer to the first central axis.

[0064] Referring to Figures 1 and 2, when the airflow regulator 120 is in the first state, the gap defined between every two adjacent guide vanes 1201 is defined as the first airflow passage 1202. When the airflow regulator 120 is in the second state, the gap defined between every two adjacent guide vanes 1201 is defined as the second airflow passage 1203. Furthermore, in the direction parallel to the first central axis, the length of the first airflow passage 1202 is greater than the length of the second airflow passage 1203. That is, when the airflow regulator 120 is in the first state, the airflow passage of the airflow regulator 120 becomes longer, which allows for a longer guiding time for the airflow. The airflow regulator 120 has a better rectification effect on the airflow, which can improve the conversion of the circumferential velocity component of the airflow into the axial velocity component, causing the airflow to converge towards the direction closer to the first central axis, thus achieving the converging effect of the airflow regulator 120 on the airflow.

[0065] Referring to Figures 3 and 4, when the airflow regulator 120 is in the second state, the airflow flows through the second airflow passage 1203. Since the length of the second airflow passage 1203 is relatively short, the airflow regulator 120 guides the airflow for a short time, and the overall guiding effect of the airflow regulator 120 is reduced. When the airflow flows through the airflow regulator 120, it can effectively maintain its circumferential velocity, so that the airflow flows out of the airflow regulator 120 in a cone-like shape, ensuring the divergence of the airflow.

[0066] The first central axis is set parallel to or collinear with the rotation center line of the drive fan 300.

[0067] According to the wind pattern control mechanism 100 of this application, by setting the airflow regulating component 120, the wind pattern control mechanism 100 can adjust the air outlet range and air outlet intensity. When the airflow regulating component 120 is in the first state, the airflow regulating component 120 can continuously guide the airflow, and the circumferential velocity component of the airflow is converted into the axial velocity component. The airflow is in a converging state when it flows out, and the air outlet intensity is high. In the second state, the airflow regulating component 120 has a small rectification effect on the airflow. When the airflow flows through the airflow regulating component 120, it can maintain the circumferential velocity component of the airflow, so that the airflow can be in a conical shape when it flows out of the airflow regulating component 120, ensuring the divergent state of the airflow when it flows out. Furthermore, the airflow regulating component 120 can switch between the first state and the second state, so that the wind pattern control mechanism 100 has different working states. Users can adjust the working state of the wind pattern control mechanism 100 according to actual needs to meet the user's usage requirements.

[0068] Referring to Figures 1 and 2, in some embodiments of this application, the wind pattern control mechanism 100 further includes an annular support 110, which defines an air duct 101, and the airflow regulator 120 is mounted to the support 110.

[0069] The bracket 110 defines the air duct 101, within which airflow can flow. The bracket 110 can also serve as a mounting carrier for the airflow regulator 120, facilitating its installation. Furthermore, the bracket 110 can protect the airflow regulator 120, preventing external debris from contacting it and causing it to malfunction.

[0070] Referring to Figures 1 to 4, in some embodiments of this application, the number of second airflow passages 1203 is greater than the number of first airflow passages 1202.

[0071] The airflow regulating component 120 includes multi-layer guide vanes 1201, which includes a plurality of front guide vanes 121 and a plurality of rear guide vanes 122. The plurality of front guide vanes 121 are arranged at intervals around a first central axis, and a front gap is formed between every two adjacent front guide vanes 121. The multi-layer rear guide vanes 122 are arranged at intervals around the first central axis, and a rear gap is formed between every two adjacent rear guide vanes 122.

[0072] When the airflow regulating component 120 is in the first state, each front guide vane 121 and each rear guide vane 122 are arranged opposite each other in a direction parallel to the first central axis. Each front gap and each rear gap are arranged opposite each other in a direction parallel to the first central axis. The front gap and the rear gap together form the first airflow passage 1202. The front guide vane 121 and the rear guide vane 122 can continuously guide the airflow, improve the effect of converting the circumferential velocity of the airflow into the axial velocity, so that the airflow appears cylindrical after it flows out, and the wind feeling when the airflow flows out is strong.

[0073] When the airflow regulator 120 is in the second state, each front guide vane 121 and each rear guide vane 122 are offset in a direction parallel to the first central axis, so that each front gap and each rear gap are offset in a direction parallel to the first central axis. Each front gap and each rear gap are second airflow passages 1203. Thus, the number of first airflow passages 1202 is less than the number of second airflow passages 1203, the length of the second airflow passages 1203 is shorter, and the front guide vanes 121 and rear guide vanes 122 cannot guide continuously. Compared with the first state, the rectification effect of the airflow regulator 120 on the airflow is reduced overall. When the airflow flows through the airflow regulator 120, it can maintain the circumferential velocity of the airflow, so that the airflow diverges in a cone-like shape when it flows out of the airflow regulator 120.

[0074] In some other embodiments of this application, the guide vane 1201 may be configured to extend and retract in a direction parallel to the first central axis. When the airflow regulating member 120 is in the first state, the guide vane 1201 extends in a direction parallel to the first central axis. When the airflow regulating member 120 is in the second state, the guide vane 1201 shortens in a direction parallel to the first central axis, thereby making the length of the first airflow passage 1202 greater than the length of the second airflow passage 1203.

[0075] Referring to Figure 2, in some embodiments of this application, the thickness of the front guide vane 121 is H1, the thickness of the rear guide vane 122 is H2, and the total thickness of the front guide vane 121 and the rear guide vane 122 is H3, where H3 satisfies: 10mm≤H3≤20mm.

[0076] "Guide vane thickness" refers to the dimension of the guide vane in the axial direction.

[0077] By ensuring that 10mm≤H3≤20mm, it is beneficial to guarantee the guiding effect of the airflow regulator 120 on the airflow, thereby improving the adjustment effect of the wind pattern control mechanism 100 on the airflow. H3 is 15mm, so that while ensuring the adjustment effect of the airflow regulator 120 on the airflow, the space occupied by the airflow regulator 120 can be reduced, thereby reducing the volume of the wind pattern control mechanism 100.

[0078] When H3 < 10 mm, the airflow regulating component 120 has a poor guiding effect on the airflow. When H3 > 20 mm, the airflow regulating component 120 requires a large arrangement space, resulting in a large volume and weight of the wind pattern control mechanism 100, which is not conducive to the miniaturization and lightweight design of the wind pattern control mechanism 100.

[0079] The thickness H1 of the front guide vane 121 can be the same as the thickness H2 of the rear guide vane 122, both being 7.5mm. By making the thicknesses of the front guide vane 121 and the rear guide vane 122 the same, it is beneficial to improve the processing convenience of the front guide vane 121 and the rear guide vane 122, and improve the production and processing efficiency of the wind pattern control mechanism 100.

[0080] Referring to Figures 8 to 12, in some embodiments of this application, the bracket 110 includes a fixed ring 112 and a rotating ring 113, the rotating ring 113 being rotatable relative to the fixed ring 112, and one of the front guide vane 121 and the rear guide vane 122 being disposed on the fixed ring 112 and the other being disposed on the rotating ring 113.

[0081] The fixed ring 112 and the rotating ring 113 are used to provide mounting positions for the front guide vane 121 and the rear guide vane 122, respectively. An annular mounting space is formed in the fixed ring 112, and an annular arrangement space is formed in the rotating ring 113. The annular mounting space and the annular arrangement space are arranged opposite each other in the axial direction. The front guide vane 121 can be mounted on the fixed ring 112, and the rear guide vane 122 can be mounted on the rotating ring 113. Of course, the front guide vane 121 can also be mounted on the rotating ring 113, and the rear guide vane 122 can be mounted on the fixed ring 112, as long as the front guide vane 121 and the rear guide vane 122 can rotate relative to each other.

[0082] The rotating ring 113 can rotate relative to the fixed ring 112, so that the front guide vane 121 and the rear guide vane 122 can rotate relative to each other. When it is necessary to adjust the air outlet state, the rotating ring 113 can be driven to rotate so that the front guide vane 121 and the rear guide vane 122 can rotate relative to each other, thereby adjusting the position between the front guide vane 121 and the rear guide vane 122, so that the front guide vane 121 and the rear guide vane 122 are directly opposite each other in the front-to-back direction or are staggered in the circumferential direction, thereby adjusting the working state of the airflow regulating component 120.

[0083] Referring to Figures 9 and 10, in some embodiments of this application, a guide vane support 1132 is provided within the rotating ring 113, and a guide vane support portion 1121 is provided within the fixed ring 112. The guide vane support 1132 and the rotating ring 113 together define an annular arrangement space, and the fixed ring 112 and the guide vane support portion 1121 together define an annular installation space. One of the front guide vane 121 and the rear guide vane 122 is provided in the fixed ring 112 and the other is provided in the rotating ring 113. The guide vane support 113... 2 can provide support for one of the front guide vanes 121 or the rear guide vanes 122 to facilitate the installation of the front guide vanes 121 or the rear guide vanes 122 and to ensure the stability of the front guide vanes 121 or the rear guide vanes 122. Similarly, the guide vane support 1121 can provide support for one of the front guide vanes 121 or the rear guide vanes 122 to facilitate the installation of the front guide vanes 121 or the rear guide vanes 122 and to ensure the stability of the front guide vanes 121 or the rear guide vanes 122.

[0084] The guide vane support 1132 can be connected to the rotating ring 113 through a connecting rib structure to ensure the reliability of the connection between the guide vane support 1132 and the rotating ring 113. Similarly, the guide vane support 1121 can be connected to the rotating ring 113 through a connecting rib structure to ensure the reliability of the connection between the guide vane support 1121 and the fixed ring 112.

[0085] Referring to FIG11, in some embodiments of this application, the wind pattern control mechanism 100 further includes a drive device, which is connected to the rotating ring 113 to drive the rotating ring 113 to rotate, thereby realizing the relative rotation of the front guide vane 121 and the rear guide vane 122 to adjust the working state of the airflow regulating component 120. The drive device can realize manual or automatic driving of the rotating ring 113.

[0086] When the rotating ring 113 is manually driven, the driving device can be configured as a lever. The lever is set on the rotating ring 113 and extends radially away from the central axis of the rotating ring 113. The user can manually drive the lever to make the rotating ring 113 rotate relative to the fixed ring 112, thereby realizing the relative rotation of the front guide vane 121 and the rear guide vane 122, so that the airflow regulating component 120 can switch between the first state and the second state, realizing the user's manual adjustment of the working state of the wind pattern control mechanism 100.

[0087] When the rotating ring 113 is automatically driven, a drive unit (not shown) is provided on the rotating ring 113. The drive device can be configured as a drive motor 140, and the output end of the drive motor 140 is connected to the drive unit to drive the rotating ring 113 to rotate.

[0088] For example, the output end of the drive motor 140 can be constructed as a crank, and the drive unit can be constructed as a boss structure. The crank is connected to the drive unit. At this time, the rotating ring 113 can be used as a rocker in a four-bar linkage. A crank-rocker mechanism is formed between the crank and the rotating ring 113. When the drive motor 140 is working, the crank drives the rotating ring 113 to perform a small-distance reciprocating rotational motion through the drive unit, so that the rotating ring 113 can rotate relative to the fixed ring 112, thereby allowing the front guide vane 121 and the rear guide vane 122 to rotate relative to each other.

[0089] The drive motor 140 can be configured as a oscillating motor. The output end of the drive motor 140 can be constructed as a connecting rod, and the drive unit can be constructed as a connecting rod mounting post. The connecting rod is connected to the connecting rod mounting post so that a crank-rocker mechanism is formed between the output end of the drive motor 140 and the rotating ring 113. The rotating ring 113 serves as the rocker element in the crank-rocker mechanism. When the drive motor 140 is working, the connecting rod drives the rotating ring 113 to rotate through the drive unit, thereby allowing the front guide vane 121 and the rear guide vane 122 to rotate relative to each other. This allows the front guide vane 121 and the rear guide vane 122 to be aligned or staggered in the front-to-back direction, thereby achieving automatic adjustment of the airflow regulating component 120.

[0090] The drive motor 140 can be configured as a stepper motor. The output end of the drive motor 140 is provided with a drive gear. At this time, the drive part is constructed as a mating gear. The drive gear can mesh with the mating gear. When the drive motor 140 is working, the drive gear drives the mating gear to rotate, thereby driving the rotating ring 113 to rotate. The stepper motor reciprocates to drive the rotating ring 113 to reciprocate.

[0091] The drive device can be arranged on the outside of the rotating ring 113, or the drive device can be arranged inside the rotating ring 113, as long as the drive device can drive the rotating ring 113. The specific arrangement is not limited here.

[0092] In some embodiments of this application, a drive motor 140 mounting position is provided in the guide vane support 1121. The drive motor 140 can be installed in the guide vane support 1121. Correspondingly, a drive unit is provided in the guide vane support 1132. The drive unit can be connected to the output end of the drive motor 140 to drive the rotating ring 113 to rotate.

[0093] Specifically, referring to Figures 9 to 11, the drive motor 140 can be configured as a oscillating motor. The output end of the drive motor 140 is configured as a connecting rod, which extends radially after extending from the guide vane support 1121. A clearance groove 1133 is formed on the guide vane support 1132, and the connecting rod can be disposed in the guide vane support 1132 through the clearance groove 1133 to facilitate connection between the connecting rod and the drive unit. The clearance groove 1133 can be configured as an arc-shaped groove.

[0094] Referring to Figures 9 to 11, in some embodiments of this application, both the front guide vane 121 and the rear guide vane 122 are formed in an arc shape.

[0095] The front guide vane 121 has a cross-section perpendicular to the central axis of the air duct space 111, which is formed in an arc shape. Similarly, the rear guide vane 122 has a cross-section perpendicular to the central axis of the air duct space 111, which is also formed in an arc shape. This reduces the air resistance when the airflow passes through the front guide vane 121 and the rear guide vane 122, ensuring the smooth flow of air. Of course, the front guide vane 121 and the rear guide vane 122 can also be formed in other shapes, such as straight lines.

[0096] In some embodiments of this application, at least one layer of guide vanes 1201 rotates relative to the other layers of guide vanes 1201 within a set time period; or at least one layer of guide vanes 1201 reciprocates relative to the other layers of guide vanes 1201 within a set time period.

[0097] At least one layer of guide vanes 1201 can rotate counterclockwise or clockwise relative to the other layers of guide vanes 1201 within a set time period. Within the set time period, the guide vanes 1201 can rotate at a certain angle so that the multiple layers of guide vanes 1201 can be aligned or misaligned in a direction parallel to the first central axis. The airflow regulating component 120 can switch from the first state to the second state or from the second state to the first state to realize the automatic control of the working state of the airflow regulating component 120.

[0098] At least one layer of guide vanes 1201 can reciprocate around the first central axis relative to the other layers of guide vanes 1201 within a set time period. For example, at least one layer of guide vanes 1201 can first rotate clockwise around the first central axis to a certain angle relative to the other layers of guide vanes 1201 within a set time period, so that the multiple layers of guide vanes 1201 can be aligned or misaligned in a direction parallel to the first central axis. Then, the layer of guide vanes 1201 rotates counterclockwise around the first central axis to achieve a reset, so that the airflow regulator 120 can switch from the first state to the second state or from the second state to the first state, thereby realizing the automatic control of the working state of the airflow regulator 120.

[0099] The number of layers of guide vanes 1201 and the number of rotating guide vanes 1201 are not specifically limited here, as long as relative rotation can occur between the multiple layers of guide vanes 1201.

[0100] In some embodiments of this application, at least one layer of guide vanes rotates back and forth relative to the guide vanes of the other layers for a set time.

[0101] At least one layer of guide vanes 1201 can rotate around the first central axis relative to the other layers of guide vanes 1201 within a set time period. Within the set time period, the guide vanes 1201 can rotate at a certain angle so that the multiple layers of guide vanes 1201 can be aligned or misaligned in a direction parallel to the first central axis, so that the airflow regulating member 120 can switch between a first state and a second state.

[0102] Referring to Figures 1 to 4, in some embodiments of this application, the airflow regulating member 120 is provided with a first central axis, and multiple guide vanes 1201 are arranged at intervals around the first central axis; the wind pattern control mechanism 100 also includes an air duct regulating member 130, which forms an airflow regulating cavity 133. The inner wall of the airflow regulating cavity 133 is deflected relative to the vertical plane of the first central axis under the action of the air duct regulating member 130. The wind pattern control mechanism 100 has a wind gathering mode and a wind dispersing mode. The inner wall of the airflow regulating cavity 133 is deflected at a larger angle relative to the vertical plane in the wind dispersing mode than in the wind gathering mode, so that the airflow is restricted by the inner wall of the airflow regulating cavity 133 in the wind gathering mode, while in the wind dispersing mode, the airflow is guided by the inner wall of the airflow regulating cavity 133 and diffuses outward.

[0103] When airflow flows into the airflow regulator 120, the guide vanes 1201 can guide the airflow to adjust the airflow effect when it flows out of the airflow regulator 120. Multiple guide vanes 1201 can be arranged in a single layer, spaced apart around a first central axis, and can deflect relative to the first central axis. The guide vanes 1201 deflect at a larger angle relative to the first central axis in the airflow dispersion mode than in the airflow concentration mode. For example, in the airflow concentration mode, the guide vanes 1201 can be parallel to or slightly angled to the first central axis. With the included angle setting, when the airflow flows into the airflow regulator 120 and impacts the guide vane 1201, the guide vane 1201 can guide the airflow to converge towards the direction of the first central axis. In the diffused airflow mode, the guide vane 1201 deflects in a direction away from the first central axis, and the deflection angle of the guide vane 1201 relative to the first central axis is larger than that in the diffused airflow mode. The adjustment effect of the guide vane 1201 on the airflow is reduced, and the airflow can maintain its circumferential velocity, so that the airflow can be in a divergent state when it flows out of the airflow regulator 120.

[0104] Multiple guide vanes 1201 can be configured such that the length of the gap between every two adjacent guide vanes 1201 is adjustable. In the wind-gathering mode, the gap defined between every two adjacent guide vanes 1201 is defined as the first airflow passage 1202. In the wind-diffusing mode, the gap defined between every two adjacent guide vanes 1201 is defined as the second airflow passage 1203. In the direction parallel to the first central axis, the length of the first passage 120 is greater than the length of the second airflow passage 1203. That is, in the wind-gathering mode, the airflow regulating component 120 guides the airflow for a longer time and has a better rectification effect on the airflow. This can improve the effect of converting the circumferential velocity component of the airflow into the axial velocity component, causing the airflow to converge towards the direction closer to the first central axis, thus achieving the converging effect of the airflow regulating component 120 on the airflow.

[0105] When in the diffused airflow mode, the airflow flows through the second airflow passage 1203. Since the length of the second airflow passage 1203 is relatively short, the airflow regulating component 120 guides the airflow for a short time, and the overall guiding effect of the airflow regulating component 120 is reduced. When the airflow flows through the airflow regulating component 120, it can effectively maintain its circumferential velocity, so that the airflow flows out of the airflow regulating component 120 in a cone-like shape, ensuring the divergence of the airflow.

[0106] The wind pattern control mechanism 100 also includes a duct adjustment component 130, which has an airflow adjustment cavity 133. When airflow flows into the airflow adjustment cavity 133, the inner wall of the airflow adjustment cavity 133 can guide the airflow to adjust the airflow feel and airflow range when the airflow flows out of the duct adjustment component 130. When the duct adjustment component 130 is adjusted, the inner wall of the airflow adjustment cavity 133 formed by the duct adjustment component 130 can deflect relative to the vertical plane of the first central axis, thereby adjusting the airflow adjustment effect of the inner wall of the airflow adjustment cavity 133.

[0107] "Vertical plane" does not refer to a plane that extends in a vertical direction, but only to a plane that is perpendicular to the first central axis.

[0108] The wind pattern control mechanism 100 has a wind gathering mode and a wind dispersing mode. When the wind pattern control mechanism 100 is in the wind gathering mode, the inner wall of the airflow regulating cavity 133 is arranged at an angle to the vertical plane, and the inner wall of the airflow regulating cavity 133 can regulate the airflow, so that the circumferential velocity component of the airflow is converted into the axial velocity component, thereby causing the airflow flowing out of the air duct regulating component 130 to converge towards the direction closer to the first central axis.

[0109] When the wind pattern control mechanism 100 is in the wind dispersion mode, compared with the wind pattern control mechanism 100 in the wind concentration mode, the angle formed between the inner wall of the airflow regulating component 120 and the vertical plane is larger, so as to reduce the adjustment effect of the inner wall of the airflow regulating cavity 133 on the circumferential velocity of the airflow. When the airflow flows out of the air duct regulating component 130, it can still maintain a certain circumferential velocity, so that the airflow out presents an overall cone-like shape, and the airflow is in a divergent state.

[0110] Referring to Figures 1 to 4, in some embodiments of this application, the air duct adjustment component 130 is disposed on the bracket 110 and located on the air outlet side of the airflow adjustment component 120, and the area of ​​the air outlet 131 of the air duct adjustment component 130 in the air-gathering state is smaller than the area of ​​the air outlet 131 in the air-diffusing state.

[0111] "Air outlet side of airflow regulator 120" refers to the side from which airflow flows out of airflow regulator 120.

[0112] The air duct adjustment component 130 is mounted on the bracket 110 and is located on the air outlet side of the airflow adjustment component 120. After the airflow passes through the airflow adjustment component 120, it flows into the air duct adjustment component 130. The area of ​​the air outlet 131 of the air duct adjustment component 130 can be adjusted so as to further adjust the flow range and intensity of the airflow through the area of ​​the air outlet 131.

[0113] When the air duct regulating component 130 is in the air-gathering state, the inner wall of the air duct regulating component 130 can guide the airflow flowing into it, and the air duct regulating component 130 can regulate the airflow flowing into it. In addition, the air outlet 131 of the air duct regulating component 130 has a small area, and the air duct regulating component 130 can adjust the circumferential velocity of the airflow to the axial velocity, so that the airflow flowing out of the air duct regulating component 130 is more concentrated in the axial direction, flows a longer distance, and has a stronger airflow.

[0114] When the air duct regulator 130 is in the diffused air state, the air outlet 131 of the air duct regulator 130 has a large area, and the inner wall of the air duct regulator 130 has little interference with the circumferential velocity component of the airflow. When the airflow flows out of the air duct regulator 130, it can still maintain a certain circumferential velocity component, making the airflow flowing out of the air duct regulator 130 more diffuse in the radial direction and the airflow more gentle.

[0115] Referring to Figures 1 and 2, when the airflow regulator 120 is in the first state, the air duct regulator 130 is in the air-gathering state. After the airflow flows out of the airflow regulator 120, the air duct regulator 130 can rectify the airflow to ensure the gathering effect when the airflow flows out of the airflow control mechanism. Referring to Figures 3 and 4, when the airflow regulator 120 is in the second state, the air duct regulator 130 is in the air-diffusing state. After the airflow flows out of the airflow regulator 120, the air duct regulator 130 can maintain the circumferential velocity of the airflow to ensure the dispersing effect when the airflow flows out of the airflow control mechanism 100.

[0116] Therefore, by cooperating with the airflow regulating component 130 and the airflow regulating component 120, the guiding effect of the airflow control mechanism 100 on the airflow is improved, thereby improving the airflow regulation effect of the airflow control mechanism, resulting in a significant difference in the airflow feel, which is conducive to meeting different user needs and improving the user experience.

[0117] In some embodiments of this application, the air duct adjustment component 130 includes a plurality of sway blades 132, which are arranged circumferentially along the support 110 of the air-type control mechanism 100, and each sway blade 132 is rotatably mounted on the support 110.

[0118] The end of the oscillating blade 132 closest to the support 110 in the axial direction is defined as the inner end of the oscillating blade 132, which can also be understood as the air inlet end of the oscillating blade 132. The end of the oscillating blade 132 furthest from the support 110 in the axial direction is defined as the outer end of the oscillating blade 132, which can also be understood as the air outlet end of the oscillating blade 132. The outer end of the oscillating blade 132 is the outer side of the air duct adjustment component 130, and the inner end of the oscillating blade 132 is the inner side of the air duct adjustment component 130. In addition, an air outlet 131 is formed on the outer side of the air duct adjustment component 130.

[0119] Referring to Figures 1 and 3, multiple oscillating blades 132 are provided, and the multiple oscillating blades 132 are evenly arranged along the circumferential direction of the support 110 to construct the air duct adjustment component 130 as a ring. The inner end of each oscillating blade 132 is rotatably connected to the support 110, and when the inner end of the oscillating blade 132 rotates relative to the support 110, the outer end of each oscillating blade 132 can move towards or away from the central axis of the air duct adjustment component 130, thereby adjusting the area of ​​the air outlet 131 of the air duct adjustment component 130 to reduce or increase the area of ​​the air outlet 131, so that the air duct adjustment component 130 can switch between the air dispersion state and the air concentration state.

[0120] When the inner end of the oscillating blade 132 drives the outer end to rotate towards the central axis of the air duct regulator 130, the multiple oscillating blades 132 contract inward in the radial direction, the area of ​​the air outlet 131 is small, and the multiple oscillating blades 132 can regulate the airflow to convert the circumferential velocity of the airflow into the axial velocity, thereby resulting in a strong wind and a strong wind sensation, achieving the wind-gathering state of the air duct regulator 130; when the inner end of the oscillating blade 132 drives the outer end to rotate away from the central axis of the air duct regulator 130, the multiple oscillating blades 132 expand outward in the radial direction, the area of ​​the air outlet 131 increases, and the interference of the oscillating blades 132 on the circumferential velocity of the airflow is small, the airflow can still maintain a certain circumferential velocity when it is discharged from the air duct regulator 130, resulting in a large air outlet area and a gentle airflow, achieving the wind-diffusing state of the air duct regulator 130.

[0121] Referring to Figures 2 and 4, as well as Figures 9 and 10, in some embodiments of this application, the rotating ring 113 is located at the air inlet end of the fixed ring 112, the front guide vane 121 is disposed on the fixed ring 112, the rear guide vane 122 is disposed on the rotating ring 113, and the air duct adjustment component 130 is disposed on the fixed ring 112 and rotates in conjunction with the airflow adjustment component 120.

[0122] As shown in Figure 8, multiple oscillating blades 132 are arranged sequentially at intervals along the circumferential direction. A drive seat 1321 is provided at the air inlet end of the oscillating blades 132. A drive rod 1322 is provided on the side of the drive seat 1321 away from the central axis of the air duct adjustment component 130. The drive rod 1322 is rotatably connected to the drive seat 1321.

[0123] As shown in Figure 9, the air outlet end of the fixed ring 112 is provided with a plurality of swashplate mounting portions 1122 arranged at intervals along the circumferential direction. The drive seat 1321 is rotatably connected to the swashplate mounting portions 1122, and the rotation axis between the drive rod 1322 and the drive seat 1321 is arranged parallel to the rotation axis of the drive seat 1321 and the swashplate mounting portions 1122.

[0124] As shown in Figure 10, a plurality of drive blocks 1134 are formed on the outer wall surface of the rotating ring 113 at intervals along the circumferential direction. The drive blocks 1134 extend in the radial direction away from the central axis of the rotating ring 113. A drive groove 1135 is formed on the drive block 1134 and recessed in the radial direction toward the central axis of the rotating ring 113. The end of the drive rod 1322 away from the swing blade 132 can be inserted into the drive groove 1135.

[0125] The drive groove 1135 extends obliquely on the drive block 1134, that is, one end of the drive groove 1135 is set close to the air outlet end of the rotating ring 113 in the axial direction, and the other end of the drive groove 1135 is set close to the air inlet end of the rotating ring 113 in the axial direction, and the multiple drive grooves 1135 are arranged in the same way.

[0126] Referring to Figures 12 and 13, when the rotating ring 113 rotates relative to the fixed ring 112, the drive rod 1322 can slide within the drive groove 1135. Since the drive groove 1135 is inclined, the drive rod 1322 moves axially towards or away from the air inlet end of the rotating ring 113 while sliding within the drive groove 1135. Specifically, the drive groove 1135 can drive the drive rod 1322 to move towards the air inlet end of the rotating ring 113. At this time, the drive rod 1322 drives the drive seat 1321 to rotate towards the air inlet end of the rotating ring 113, simultaneously driving... The seat 1321 drives the swing blades 132 to rotate towards the air inlet end of the rotating ring 113. At this time, the air outlet ends of the multiple swing blades 132 move radially away from the central axis of the air duct adjustment component 130. The area of ​​the air outlet 131 of the air duct adjustment component 130 increases, and the air duct adjustment component 130 is in the air dispersion state. At the same time, the rotating ring 113 drives the rear guide blades 122 to rotate relative to the front guide blades 121, and rotates until the multiple front guide blades 121 and the multiple rear guide blades 122 are misaligned. The airflow adjustment component 120 is in the second state, and the wind pattern control mechanism 100 is in the air dispersion mode.

[0127] When the drive groove 1135 drives the drive rod 1322 to move away from the air inlet end of the rotating ring 113, the drive rod 1322 drives the drive seat 1321 to rotate away from the air inlet end of the rotating ring 113. At the same time, the drive seat 1321 drives the swing blades 132 to rotate away from the air inlet end of the rotating ring 113. At this time, the air outlet ends of the multiple swing blades 132 move radially closer to the central axis of the air duct adjustment component 130. The area of ​​the air outlet 131 of the air duct adjustment component 130 increases, and the air duct adjustment component 130 is in the air-gathering state. At the same time, the rotating ring 113 drives the rear guide blades 122 to rotate relative to the front guide blades 121, and rotates until the multiple front guide blades 121 and the multiple rear guide blades 122 are arranged one-to-one facing each other. The airflow adjustment component 120 is in the first state, and the wind pattern control mechanism 100 is in the air-gathering mode.

[0128] Referring to Figures 12 and 13, in the embodiments of this application, a plurality of circumferentially spaced limiting boxes 1123 are provided on the fixed ring 112. The limiting boxes 1123 extend radially away from the central axis of the fixed ring 112. The plurality of limiting boxes 1123 are correspondingly provided with a plurality of swing blade mounting parts 1122. The drive rod 1322 passes through the limiting box 1123 and is inserted into the drive groove 1135. The limiting box 1123 can limit the drive rod 1322 in the circumferential direction to prevent the drive rod 1322 from deforming during the driving process and affecting the driving effect on the swing blade 132, so as to ensure that the rotating ring 113 can effectively drive the swing blade 132 through the drive rod 1322.

[0129] Referring to Figures 1 to 4, in some embodiments of this application, adjacent swing blades 132 have overlapping areas in the circumferential direction of the support 110.

[0130] The inner ends of multiple oscillating blades 132 are arranged sequentially at intervals in the circumferential direction, and the portions of adjacent oscillating blades 132 can overlap. For example, the oscillating blades 132 may include a first oscillating blade 1323, a second oscillating blade 1324, and a third oscillating blade 1325, and the first oscillating blade 1323, the second oscillating blade 1324, and the third oscillating blade 1325 are arranged sequentially adjacent to each other. In the arrangement direction of the multiple oscillating blades 132, one side of the first oscillating blade 1323 can overlap the second oscillating blade 1324, and the side of the second oscillating blade 1324 away from the first oscillating blade 1323 can overlap the third oscillating blade 1325, thereby achieving an overlapping area between adjacent oscillating blades 132 to prevent air leakage in the duct regulating component 130 due to gaps between adjacent oscillating blades 132, and to ensure the air outlet effect of the wind pattern control mechanism 100.

[0131] In some specific embodiments, there are 7 oscillating blades 132, and the width of the oscillating blades 132 is H5, between 80mm≤H5≤100mm, so as to ensure that there is an overlapping area between adjacent oscillating blades 132. The number of oscillating blades 132 and the size of the overlapping area between adjacent oscillating blades 132 can be determined according to the size of the wind pattern control mechanism 100, and are not specifically limited here.

[0132] The “width dimension of the oscillating blade 132” refers to the maximum distance between two adjacent sidewalls located between the air outlet and air inlet of the oscillating blade 132.

[0133] As shown in Figure 2, in some embodiments of this application, in the air-gathering state, the cross-sectional area of ​​the air duct regulating member 130 gradually decreases in the direction toward the air outlet 131; and / or in the air-diffusing state, the cross-sectional area of ​​the air duct regulating member 130 gradually increases in the direction toward the air outlet 131.

[0134] In the wind-gathering state, along the axial direction from the airflow regulator 120 to the duct regulator 130, the distance between the inner wall of the duct regulator 130 and its central axis gradually decreases, that is, the duct regulator 130 gradually contracts and moves closer to its central axis to guide the airflow to gradually concentrate. This is beneficial to increase the flow distance of the airflow in the outlet direction and can enhance the intensity of the airflow, making the airflow stronger when it flows out of the wind-type control mechanism 100.

[0135] "Inner wall" refers to the side wall of the air duct adjustment component 130 that is closer to its central axis in the radial direction.

[0136] As shown in Figure 4, in the diffused airflow state, along the axial direction from the airflow regulator 120 to the duct regulator 130, the distance between the inner wall of the duct regulator 130 and its central axis gradually increases, that is, the cross-sectional area of ​​the duct regulator 130 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, and make the airflow more gentle when it flows out of the wind pattern control mechanism 100.

[0137] Alternatively, in the air-gathering state, the distance between the inner wall of the air duct regulator 130 and its central axis gradually decreases in the axial direction extending from the airflow regulator 120 to the air duct regulator 130. In the air-diffusing state, the distance between the inner wall of the air duct regulator 130 and its central axis remains constant in the axial direction extending from the airflow regulator 120 to the air duct regulator 130.

[0138] Alternatively, in the air-gathering state, the distance between the inner wall of the air duct regulator 130 and its central axis remains constant in the axial direction extending from the airflow regulator 120 to the air duct regulator 130. In the air-diffusing state, the distance between the inner wall of the air duct regulator 130 and its central axis gradually increases in the axial direction extending from the airflow regulator 120 to the air duct regulator 130.

[0139] In some embodiments of this application, each oscillating blade 132 is formed as an arc-shaped plate.

[0140] Multiple blades 132 are arranged sequentially in the circumferential direction. Each blade 132 is formed as an arc-shaped plate. That is, in the radial direction, the inner wall of each blade 132 (i.e., the side wall of the blade 132 close to the central axis of the air duct adjuster 130 in the radial direction) is arc-shaped and raised in the direction away from the central axis of the air duct adjuster 130. This reduces the influence of the shape of the inner wall of the air duct adjuster 130 on the airflow, thereby reducing wind resistance and ensuring the flow effect of the airflow.

[0141] As shown in FIG7, in some embodiments of this application, the oscillating blade 132 has a guide portion 1326 formed on the side facing the central axis of the air duct adjuster 130, and the guide portion 1326 extends along the circumferential direction of the air duct adjuster 130.

[0142] One end of the oscillating blade 132 along the axial direction can be set to have a larger width and the other end to have a smaller width. The narrower end is defined as the inner end of the oscillating blade 132, which is rotatably connected to the support 110. The wider end is defined as the free end. A guide portion 1326 is provided on the oscillating blade 132. The guide portion 1326 is configured to protrude along the axial direction toward one side of the central axis of the support 110. The distance between the oscillating blade 132 at the guide portion 1326 and the central axis of the air duct adjustment component 130 is less than the distance between the oscillating blade 132 at other positions and the central axis of the air duct adjustment component 130.

[0143] When the airflow flows into the air duct regulator 130, the circumferential velocity of the airflow flows into the air duct regulator 130 and, under the action of the guide section 1326, it converges towards the central axis of the air duct regulator 130. When the axial velocity of the airflow is low, the part of the airflow flowing along the circumferential direction converges along the axial direction, making the airflow flowing out of the air duct regulator 130 more concentrated and stronger.

[0144] As shown in Figure 3, in some embodiments of this application, the plurality of oscillating blades 132 include a main oscillating blade 1327 and a secondary oscillating blade 1328. The main oscillating blade 1327 and the secondary oscillating blade 1328 overlap at least partially. The main oscillating blade 1327 is adapted to drive the secondary oscillating blade 1328 to rotate relative to the bracket 110 through the overlap area, so that the area of ​​the air outlet 131 of the air duct adjustment component 130 is adjustable.

[0145] The main swing blade 1327 can be connected to the rotating ring 113 for transmission. The rotating ring 113 drives the main swing blade 1327 to rotate relative to the support 110, so as to realize the outward opening and inward contraction of the main swing blade 1327. The main swing blade 1327 drives the secondary swing blade 1328 to rotate relative to the support 110 through the overlapping area, so as to realize the outward opening and inward contraction of the secondary swing blade 1328. This allows the area of ​​the air outlet 131 of the air duct adjustment component 130 to be adjusted, so that the air outlet range of the wind pattern control mechanism 100 is different, thereby meeting the different usage needs of users.

[0146] Referring to Figures 2 and 4, in some embodiments of this application, the retraction angle of the blade 132 is less than or equal to 45° in the wind-gathering state, and the expansion angle of the blade 132 is less than or equal to 45° in the wind-diffusing state.

[0147] The angle between the axis of the oscillating blade 132 and the axis of the support 110 is α. When the oscillating blade 132 rotates and opens, the inner diameter of the air duct adjustment component 130 gradually increases. When the oscillating blade 132 rotates to the maximum position relative to the support 110, α ≤ 45°. This satisfies the function of pressurizing and decelerating as the inner diameter of the air duct adjustment component 130 gradually expands, making the blown air gentle and smooth. It also avoids the airflow from being unable to flow through the air duct adjustment component 130 due to excessive pressure caused by an excessively large angle α, thus preventing the airflow from losing its dynamic performance.

[0148] As the oscillating blade 132 rotates and retracts, the inner diameter of the air duct regulating component 130 gradually decreases. When the oscillating blade 132 rotates to its minimum position relative to the support 110, at this point, α ≤ 45°. This satisfies the need for pressure reduction and speed enhancement as the air duct regulating component 130 gradually retracts, resulting in a strong and concentrated airflow for rapid cooling. Simultaneously, it avoids an excessively large angle α that would cause the inner diameter of the air duct regulating component 130 to become too small, thus preventing a sharp increase in resistance and a sharp decrease in static pressure within the air duct regulating component 130, which would prevent airflow from being blocked. Therefore, this design improves the functionality of the airflow control mechanism 100 and meets different user needs.

[0149] Referring to Figure 2, in some embodiments of this application, the length of the air duct adjustment member 130 is H4, where H4 > H3.

[0150] "The length H4 of the air duct adjustment component 130" refers to the distance between the air duct adjustment component 130 at the air inlet end and the air outlet end.

[0151] The length of the air duct adjuster 130 is greater than the axial dimension of the airflow adjuster 120, so that the airflow distance within the air duct adjuster 130 is greater than the distance the airflow travels through the airflow adjuster 120. This is beneficial to improving the airflow guiding effect of the air duct adjuster 130, thereby improving the airflow adjustment effect of the wind pattern control mechanism 100.

[0152] In some embodiments of this application, H4 ≥ 40 mm, and H4 / H3 satisfies: H4 / H3 ≥ 2.

[0153] By ensuring that H4 ≥ 40 mm, the flow distance of the airflow within the duct adjustment component 130 is guaranteed, thereby improving the airflow adjustment effect of the duct adjustment component 130. This, in turn, helps to improve the airflow adjustment effect of the wind pattern control mechanism 100. H4 being 40 mm ensures the airflow adjustment effect of the duct adjustment component 130 while reducing the space occupied by the duct adjustment component 130, which in turn helps to reduce the space occupied by the wind pattern control mechanism 100.

[0154] When H4 < 40mm, the airflow distance within the duct adjustment component 130 is short, resulting in poor airflow adjustment effect of the duct adjustment component 130, which easily leads to small differences in the airflow feel and affects the user's experience.

[0155] By designing the dimensions of the airflow regulator 120 and the duct regulator 130, H4 / H3≥2 is made to improve the airflow adjustment effect of the wind pattern control mechanism 100 and enhance the difference in the airflow feel.

[0156] Referring to Figures 9 and 11, in some embodiments of this application, the width of the front guide vane 121 and the rear guide vane 122 is L1, where 2mm ≤ L1 ≤ 5mm.

[0157] "Width of the front guide vane 121" refers to the distance between two adjacent sidewalls located between the air inlet and air outlet of the front guide vane 121, and "width of the rear guide vane 122" refers to the distance between two adjacent sidewalls located between the air inlet and air outlet of the rear guide vane 122.

[0158] The dimensions 2mm≤L1≤5mm can meet the structural strength requirements of the front guide vane 121 and the rear guide vane 122, preventing them from breaking. At the same time, it can reduce the space required for arranging the airflow regulating component 120 and reduce its weight, thus facilitating the lightweight design of the wind pattern control mechanism 100.

[0159] Referring to Figures 1 to 4, the wind pattern control mechanism 100 according to this application includes: an air duct 101 having an air inlet side and an air outlet side, the air duct 101 restricting airflow from the air inlet side to the air outlet side; an air duct adjuster 130 disposed on the air outlet side of the air duct 101, the air duct adjuster 130 having an airflow regulating cavity 133; and an airflow adjuster 120 disposed opposite to the airflow regulating cavity 133, the airflow adjuster 120 being configured to adjust the airflow inside the airflow regulating cavity 133. The airflow regulating component 120 has a first central axis; the inner wall of the airflow regulating cavity 133 is deflected relative to the vertical plane of the first central axis under the action of the air duct regulating component 130 to adjust the airflow of the outer ring of the airflow regulating cavity 133. Thus, the airflow in the middle of the airflow regulating cavity 133 is adjusted by the airflow regulating component 120 and the airflow in the outer ring of the airflow regulating cavity 133 is adjusted by the air duct regulating component. Therefore, the airflow regulated by the airflow regulating component 120 and the airflow regulated by the air duct regulating component 130 can influence each other, ensuring the air outlet effect.

[0160] The wind pattern control mechanism 100 has a wind gathering mode and a wind dispersing mode. The inner wall of the airflow regulating cavity 133 deflects at a larger angle relative to the vertical plane in the wind dispersing mode than in the wind gathering mode, so that the airflow is restricted by the inner wall of the airflow regulating cavity 133 in the wind gathering mode, while in the wind dispersing mode the airflow is guided outward by the inner wall of the airflow regulating cavity 133.

[0161] The wind pattern control mechanism 100 is provided with a wind duct 101, and the airflow can flow from the air inlet side of the wind duct 101 to the air outlet side of the wind duct 101. The wind duct 101 can restrict the flow direction of the airflow, prevent the airflow from diverging, and ensure the air outlet effect of the wind pattern control mechanism 100.

[0162] The "first central axis" is set parallel to or collinear with the rotational central axis of the drive fan 300.

[0163] The airflow regulating component 130 is located on the air outlet side of the airflow duct 101. When the spiral-flowing airflow flows into the airflow regulating cavity 133, the inner wall of the airflow regulating cavity 133 can guide the peripheral airflow (i.e., the part of the airflow relatively close to the inner wall of the airflow regulating cavity 133). The airflow regulating component 120 is directly opposite the airflow regulating cavity 133. The airflow regulating component 120 can guide the middle airflow (i.e., the part of the airflow relatively far from the inner wall of the airflow regulating cavity 133) of the spiral-flowing airflow flowing into the airflow regulating cavity 133. By cooperating with the airflow regulating component 130 and the airflow regulating component 120, the wind pattern control mechanism 100 can adjust the overall airflow, improve the adjustment effect of the wind pattern control mechanism 100 on the airflow, and help improve the difference in the airflow feel under different modes. It should be noted that the airflow regulating component 120 can guide and adjust the airflow before it flows into the airflow regulating cavity 133, or the airflow regulating component 120 can be located inside the airflow regulating component 130 to guide and adjust the airflow flowing into it.

[0164] When the air duct adjuster 130 is adjusted, the inner wall of the airflow regulating cavity 133 formed by the air duct adjuster 130 can be deflected relative to the vertical plane of the first central axis, thereby adjusting the airflow regulating effect of the inner wall of the airflow regulating cavity 133.

[0165] "Vertical plane" does not refer to a plane that extends in a vertical direction, but only to a plane that is perpendicular to the first central axis.

[0166] Specifically, the wind pattern control mechanism 100 has a wind gathering mode and a wind dispersing mode. When the wind pattern control mechanism 100 is in the wind gathering mode, the inner wall of the airflow regulating cavity 133 is arranged at an angle to the vertical plane, and the inner wall of the airflow regulating cavity 133 can regulate the airflow, so that the circumferential velocity component of the airflow is converted into the axial velocity component, thereby causing the airflow flowing out of the air duct regulating component 130 to converge towards the direction closer to the first central axis.

[0167] When the wind pattern control mechanism 100 is in the wind dispersion mode, compared with the wind pattern control mechanism 100 in the wind concentration mode, the angle formed between the inner wall of the airflow regulating component 120 and the vertical plane is larger, so as to reduce the adjustment effect of the inner wall of the airflow regulating cavity 133 on the circumferential velocity of the airflow. When the airflow flows out of the air duct regulating component 130, it can still maintain a certain circumferential velocity, so that the airflow out presents an overall cone-like shape, and the airflow is in a divergent state.

[0168] When the wind pattern control mechanism 100 is in the wind-gathering mode, the duct regulator 130 is in the wind-gathering state, and the airflow regulator 120 is in the first state, so that both the duct regulator 130 and the airflow regulator 120 can converge the airflow, ensuring the wind-gathering effect of the wind pattern control mechanism 100. When the wind pattern control mechanism 100 is in the wind-dispersing mode, the duct regulator 130 is in the wind-dispersing state, and the airflow regulator 120 is in the second state, so that both the duct regulator 130 and the airflow regulator 120 can disperse the airflow, ensuring the wind-dispersing effect of the wind pattern control mechanism 100.

[0169] According to the wind pattern control mechanism 100 of this application, by setting an airflow regulator 120 and an air duct regulator 130, and the working states of the airflow regulator 120 and the air duct regulator 130 can be switched, the airflow intensity and airflow range of the wind pattern control mechanism 100 can be adjusted. In addition, the air duct regulator 130 can cooperate with the airflow regulator 120, so that the wind pattern control mechanism 100 can adjust the overall airflow, improve the airflow adjustment effect of the wind pattern control mechanism 100, and the user can adjust the working state of the wind pattern control mechanism 100 according to the actual use needs to meet the user's use needs and improve the user experience.

[0170] Referring to Figures 1 to 4, in some embodiments of this application, the airflow regulating member 120 includes a plurality of guide vanes 1201 arranged at intervals around a first central axis. A first airflow passage 1202 is defined between adjacent guide vanes 1201 in the air-gathering mode, and a second airflow passage 1203 is defined between adjacent guide vanes 1201 in the air-diffusing mode. In the direction parallel to the first central axis, the length of the first airflow passage 1202 is greater than the length of the second airflow passage 1203.

[0171] The airflow regulating component 120 includes a plurality of guide vanes 1201, which extend radially outward around a first central axis. A gap is formed between every two adjacent guide vanes 1201. Airflow can flow through the gap between two adjacent guide vanes 1201 and pass through the guide vanes 1201, so that the guide vanes 1201 can guide the airflow and convert its circumferential velocity into its axial velocity, allowing the airflow to flow in a direction closer to the first central axis.

[0172] When the wind pattern control mechanism 100 is in the wind-gathering mode, the gap defined between every two adjacent guide vanes 1201 is defined as the first airflow passage 1202. When the airflow regulator 120 is in the second state, the gap defined between every two adjacent guide vanes 1201 is defined as the second airflow passage 1203. In the direction parallel to the first central axis, the length of the first airflow passage 1202 is greater than the length of the second airflow passage 1203. That is, when the airflow regulator 120 is in the first state, the airflow regulator 120 guides the airflow for a long time and has a good rectification effect on the airflow. It can improve the effect of converting the circumferential velocity component of the airflow into the axial velocity component, so that the airflow converges towards the direction closer to the first central axis, thereby achieving the airflow convergence effect of the airflow regulator 120.

[0173] When the wind pattern control mechanism 100 is in the diffused air mode, the airflow flows through the second airflow passage 1203. Since the length of the second airflow passage 1203 is relatively short, the airflow regulating component 120 guides the airflow for a short time, and the overall guiding effect of the airflow regulating component 120 is reduced. When the airflow flows through the airflow regulating component 120, it can effectively maintain its circumferential velocity, so that the airflow flows out of the airflow regulating component 120 in a cone-like shape, ensuring the divergence of the airflow.

[0174] The first central axis is set parallel to or collinear with the rotation center line of the drive fan 300.

[0175] Referring to Figures 15 and 16, the fan 1000 according to this application includes: a wind pattern control mechanism 100 and a drive fan 300. The wind pattern control mechanism 100 is the wind pattern control mechanism 100 described above, and the drive fan 300 is located on the air inlet side of the airflow regulating member 120.

[0176] The side of the airflow regulator 120 that is axially away from the air duct regulator 130 is defined as the air inlet side of the airflow regulator 120.

[0177] The drive fan 300 drives the air to form an airflow. The airflow flows through the airflow regulator 120 and the air duct regulator 130 in sequence. The airflow regulator 120 and the air duct regulator 130 guide the airflow. After the airflow flows out of the air duct regulator 130, it flows out of the fan 1000, realizing the air delivery of the fan 1000.

[0178] Because the fan 1000 is equipped with a wind pattern control mechanism 100, by setting an airflow regulator 120 and an air duct regulator 130, and the working states of the airflow regulator 120 and the air duct regulator 130 can be switched, the airflow intensity and airflow range of the wind pattern control mechanism 100 can be adjusted. In addition, the air duct regulator 130 can cooperate with the airflow regulator 120, so that the wind pattern control mechanism 100 can adjust the overall airflow, improve the airflow adjustment effect of the wind pattern control mechanism 100, and the user can adjust the working state of the wind pattern control mechanism 100 according to the actual use needs to meet the user's needs and improve the user experience.

[0179] Referring to Figures 12, 13 and 17, the fan 1000 is provided with a housing 200, on which an air inlet area 210 and an air outlet area 220 are provided. The wind pattern control mechanism 100 and the drive fan 300 can be installed inside the housing 200.

[0180] The outer casing 200 is constructed as a cylindrical structure with a cavity. The outer casing 200 can serve as a mounting carrier for the drive fan 300 and the wind pattern control mechanism 100. The drive fan 300 and the wind pattern control mechanism 100 can be installed inside the outer casing 200. The outer casing 200 can protect the drive fan 300 and the wind pattern control mechanism 100, and prevent the fan 1000 from being damaged due to external debris entering the drive fan 300 or the wind pattern control mechanism 100.

[0181] An air inlet area 210 is formed on the rear side of the housing 200, through which outside air enters the housing 200. An air outlet area 220 is formed on the front side of the housing 200. The air outlet area 220 can be configured as an opening on the front side of the housing 200. The drive fan 300 and the wind pattern control mechanism 100 can be installed inside the housing 200 through the air outlet area 220 to facilitate the assembly of the fan 1000. At the same time, the airflow flows out of the fan 1000 after flowing out of the air duct adjustment component 130 and then flows out of the fan 1000 through the air outlet area 220, thereby realizing the air delivery of the fan 1000.

[0182] The drive fan 300 can be installed outside the housing 200. The specific arrangement of the drive fan 300 can be determined according to the actual installation requirements of the fan 1000, and no specific limitation is made here.

[0183] As shown in Figure 17, in some embodiments of this application, when a toggle lever is provided on the rotating ring 113, a through hole 230 is provided on the outer casing 200, and the toggle lever passes through the through hole 230 and can slide in the through hole 230.

[0184] The through hole 230 is constructed as an elongated hole extending in the circumferential direction of the outer shell 200. The user can drive the lever to slide within the through hole 230, thereby driving the rotating ring 113 to rotate relative to the bracket 110 via the lever.

[0185] In some embodiments of this application, a drive device support is also provided inside the housing 200. When the drive device is located outside the bracket 110, the drive device support is used to install and support the drive device.

[0186] In some embodiments of this application, the wind pattern control mechanism 100 is detachably connected to the housing 200.

[0187] Referring to Figure 17, the bracket 110 is provided with a plurality of bracket mounting seats 114 arranged at intervals along the circumferential direction, and the housing 200 is provided with a plurality of bracket fixing seats 240 arranged along the circumferential direction of the housing 200. When the wind pattern control mechanism 100 is installed in the housing 200, the plurality of bracket mounting seats 114 and the bracket fixing seats 240 are arranged one-to-one, and both the bracket mounting seats 114 and the bracket fixing seats 240 are provided with threaded holes. Threaded connectors can be inserted through the threaded holes to connect the bracket mounting seats 114 and the bracket fixing seats 240, thereby connecting the wind pattern control mechanism 100 to the housing 200, thereby realizing the detachable connection between the wind pattern control mechanism 100 and the housing 200, which facilitates the disassembly, maintenance or replacement of the wind pattern control mechanism 100.

[0188] The air inlet end of the bracket 110 can be provided with a bracket ball head extending in the axial direction, and there can be two bracket ball heads. The two bracket ball heads are arranged at intervals in the radial direction. The outer shell 200 can be provided with a sliding groove. The bracket ball head can be inserted into the sliding groove at a certain angle, and the bracket 110 and the outer shell 200 can be fixed by rotation. When it is necessary to remove the wind pattern control mechanism 100 from the outer shell 200, it can be rotated in the opposite direction and the bracket ball head can be pulled out from the sliding groove.

[0189] The air inlet end of the bracket 110 can be provided with external threads, and the inner side of the housing 200 can be formed with internal threads. The bracket 110 and the housing 200 can be detachably connected by threaded connection, which facilitates the disassembly and assembly of the wind pattern control mechanism 100.

[0190] The air inlet end of the bracket 110 can be provided with a magnet seat, and the inner side of the housing 200 can be provided with a matching magnet. The magnet seat can be magnetically attracted to the matching magnet to install the wind pattern control mechanism 100 inside the housing 200. The bracket 110 and the housing 200 are assembled by magnetic attraction, which facilitates the assembly and disassembly of the wind pattern control mechanism 100.

[0191] In some embodiments of this application, the driving fan 300 is an axial flow fan.

[0192] The drive fan 300 is an axial flow fan. The blades 310 of the drive fan 300 extend obliquely in the radial direction. When multiple blades 310 rotate, the air on the side of the blades 310 away from the airflow regulating member 120 is driven to flow towards the airflow regulating member 120 to form an airflow. When the airflow flows through the blades 310, the blades 310 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.

[0193] The airflow regulator 120 and the duct regulator 130 can guide the airflow. When the airflow regulator 120 is in the second state, the duct regulator 130 is in the air dispersion state. The airflow regulator 120 and the duct regulator 130 have little interference with the airflow. When the airflow flows out of the wind-type control mechanism 100, it can still maintain a certain circumferential velocity, making the airflow flowing out of the wind-type control mechanism 100 more gentle in the radial direction.

[0194] When the airflow regulator 120 is in the first state, the air duct regulator 130 is in the air-gathering state. After the airflow impacts the airflow regulator 120, the airflow regulator 120 guides the airflow, and the circumferential velocity component of the airflow is converted into the axial velocity component. After flowing through the airflow regulator 120, the airflow flows into the air duct regulator 130. The air duct regulator 130 regulates the airflow flowing into it, making the airflow flowing out of the air duct regulator 130 more concentrated in the axial direction.

[0195] Referring to Figures 1 to 4, in some embodiments of this application, the cross-section of each guide vane 1201 is formed as a curve, which is an Archimedean spiral. The bending direction of the curve is opposite to the rotation direction of the blades 310 of the drive fan 300, and the cross-section is perpendicular to the rotation center line of the drive fan 300.

[0196] The rotation centerline of the drive fan 300 is collinear with the central axis of the support 110. The front guide vane 121 and the rear guide vane 122 have the same structure. Taking the front guide vane 121 as an example, the cross section of the front guide vane 121 perpendicular to the rotation centerline of the drive fan 300 is formed as an Archimedean spiral, and the bending direction of the curve (i.e., the direction of the Archimedean spiral) is opposite to the rotation direction of the blades 310 of the drive fan 300. The rotation direction of the blades 310 of the drive fan 300 is the same as the direction of the circumferential velocity component of the airflow. This arrangement is beneficial because after the airflow passes through the airflow regulating member 120 and comes into contact with the airflow regulating member 120, the airflow can move along the wall of the front guide vane 121 (or the rear guide vane 122) towards the central axis of the support 110. The airflow can converge towards the central axis of the support 110, which is beneficial to increase the axial velocity component of the airflow, reduce the air outlet area in the radial direction, and make the airflow strong.

[0197] As shown in Figure 16, on the first projection plane, the orthographic projection of the air duct space 111 covers the circle where the tips 311 of multiple blades 310 are located, and the first projection plane is perpendicular to the central axis of the support 110.

[0198] Multiple blades 310 are arranged sequentially along the axial direction. When the fan 300 is working, it drives the multiple blades 310 to rotate. During the rotation of the blades 310, the surrounding airflow is driven to flow, thereby forming an airflow with a certain speed.

[0199] The “first projection surface” can be understood as the projection surface in the front-back direction or thickness direction of the fan 1000.

[0200] The airflow generated by the rotation of the blades 310 can flow into the air duct space 111. On the first projection plane, the outer edge of the orthographic projection of the air duct space 111 can surround the outer periphery of the circle where the tips 311 of the multiple blades 310 are located, or the orthographic projection of the support 110 coincides with the aforementioned circle. This is beneficial to ensure that all the airflow generated by the blades 310 is blown into the air duct space 111, thereby ensuring that all the airflow generated by the blades 310 flows through the airflow regulating component 120, preventing the airflow from dissipating inside the fan 1000, and effectively concentrating the airflow.

[0201] In the radial direction, the position where the blade 310 is furthest from the hub of the driving fan 300 is defined as the blade tip 311 of the blade 310.

[0202] In this application, "on the first projection plane, the orthographic projection of the duct space 111 covers the circle where the tips 311 of the multiple blades 310 are located" can mean that the outer edge of the orthographic projection of the duct space 111 coincides with the circle, or it can mean that the outer edge of the orthographic projection of the duct space 111 is located outside the circle (i.e. the circle falls into the orthographic projection of the duct space 111).

[0203] Referring to Figure 16, a portion of the blades 310 of the drive fan 300 extends into the duct space 111.

[0204] The radial dimension of the air duct space 111 can be larger than the radial dimension of the circle containing the tips 311 of the multiple blades 310, and a portion of the blades 310 extends into the air duct space 111. The blades 310 rotate within the air duct space 111 and generate airflow. The inner wall of the support 110 can guide the airflow into the air duct space 111, and the inner wall of the support 110 can restrict the flow of airflow to prevent the airflow from dispersing before flowing into the air duct space 111, thus ensuring the flow efficiency of the airflow.

[0205] The ends of the blades 310 in the axial direction can be placed in the air duct space 111, or all of the blades 310 can be placed in the air duct space 111. The specific arrangement of the blades 310 can be determined according to the dimensions of the fan 1000 as a whole, the blades 310 and the bracket 110, and no specific limitation is made here.

[0206] Referring to Figure 16, in a direction parallel to the rotation center line of the drive fan 300, the distance between the blade 310 of the drive fan 300 and the air inlet end of the airflow regulating component 120 is L2, 7mm≤L2≤15mm.

[0207] The distance between the blades 310 and the airflow regulator 120 is 7mm≤L2≤15mm to ensure that the airflow generated by the rotation of the blades 310 flows to the airflow regulator 120. This prevents the blades 310 and the airflow regulator 120 from interfering with each other due to the small distance between them. It also avoids the airflow from diverging in the housing 200 due to the large distance between the blades 310 and the airflow regulator 120, thus ensuring the airflow effect and the feel of the airflow. Furthermore, it makes the structure of the fan 1000 more compact and reduces the axial dimension of the fan 1000, with L2 being 10mm.

[0208] Referring to FIG16, in some embodiments of this application, on the first projection plane, the diameter of the circle containing the tips 311 of the plurality of blades 310 is D, and the dimension of the blades 310 in the direction parallel to the central axis of the driving fan 300 is defined as the height dimension H6 of the blades 310, where D = 180 mm and H6 = 80 mm, so as to improve the ability of the blades 310 to drive the airflow, improve the flow efficiency and intensity of the airflow, thereby improving the airflow feel of the fan 1000.

[0209] Referring to Figure 14, through simulation analysis of the wind pattern control mechanism 100 of this application, which is equipped with air duct adjustment component 130 and airflow adjustment component 120, at the standard test distance, the blowing range of the fan 1000 in the wind dispersion mode is greater than the blowing range of the fan 1000 in the wind concentration mode, and the average wind speed of the fan 1000 in the wind dispersion mode is less than the average wind speed of the fan 1000 in the wind concentration mode, so the airflow from the fan 1000 is gentle.

[0210] When the fan 1000 is in the wind-concentrating mode, the airflow range is smaller than that when the fan 1000 is in the wind-diffusing mode. Furthermore, the average wind speed within the airflow range when the fan 1000 is in the wind-concentrating mode is greater than the average wind speed within the airflow range when the fan 1000 is in the wind-diffusing mode. As a result, the fan 1000 has a strong airflow output.

[0211] "Blowing range" refers to the area where the wind speed of fan 1000 is greater than the rated wind speed (e.g., 0.4 m / s). "Standard test distance" is three times the diameter of the circle containing multiple blade tips 311. When performing simulation analysis and test comparison on fan 1000, it is not limited to measuring at the above "standard test distance". As long as the fan 1000 is measured at the same location, it is acceptable.

[0212] As shown in Figure 18, in some embodiments of this application, the fan 1000 further includes an air outlet cover 400, which is disposed in the air outlet area 220 of the fan 1000.

[0213] The air outlet cover 400 is installed on the outer casing 200. The air outlet 131 of the air duct adjustment component 130 is directly opposite to the air outlet cover 400 and is located in the air outlet area 220. The air outlet cover 400 has a mesh structure, through which airflow can be discharged. At the same time, the air outlet cover 400 can cover the internal structure of the fan 1000, preventing the blades 310 from breaking off and flying out through the opening when the fan 1000 is working, thus preventing injury to the user. It can also prevent the user from being injured by accidentally touching the blades 310, improving the safety of the fan 1000. In addition, the air outlet cover 400 can also reduce the accumulation of dust and other debris inside the fan 1000.

[0214] Referring to FIG18, in some embodiments of this application, the air outlet mesh cover 400 includes a middle region 410 and an outer ring region 420. The air guide ribs 430 of the middle region 410 are formed as arc-shaped ribs 431, and the air guide ribs 430 of the outer ring region 420 are formed as straight ribs 432.

[0215] The middle area 410 and the outer ring area 420 are constructed in a ring shape, and the middle area 410 and the outer ring area 420 are arranged coaxially. The outer ring area 420 is fitted outside the middle area 410 to realize the partition design of the air outlet mesh cover 400, which is not only aesthetically pleasing, but also makes the air outlet area 220 visible.

[0216] Since the area of ​​the air outlet 131 of the air duct regulator 130 is different in the air dispersing and air concentrating states, the air outlet area 220 corresponding to the air outlet 131 of the air duct regulator 130 is different when the fan 1000 is in the air dispersing mode and the air outlet area 220 corresponding to the fan 1000 is in the air concentrating mode. When the air duct regulator 130 is in the air concentrating state, the air outlet 131 is directly opposite the middle area 410, and the middle area 410 is opposite to the airflow regulator 120. The middle area 410 of the air outlet mesh cover 400 can rectify the airflow and improve the axial velocity of the airflow. When the air duct regulator 130 is in the air dispersing state, the air outlet 131 is directly opposite both the outer ring area 420 and the middle area 410.

[0217] The air guide ribs 430 in the middle area 410 are formed into arc-shaped ribs 431, and the air guide ribs 430 in the outer ring area 420 are formed into straight ribs 432. The arc-shaped ribs 431 can be designed using the Archimedes spiral principle. Multiple arc-shaped ribs 431 are evenly spaced along the circumferential direction, and the bulging direction of the arc-shaped ribs 431 is the same. The arc-shaped ribs 431 can effectively reduce the resistance of the air guide ribs 430 to the airflow, thereby effectively reducing the resistance of the air outlet mesh cover 400 to the airflow.

[0218] When the fan 1000 is in the wind-gathering mode, the air outlet 131 and the middle area 410 are directly opposite each other. After the airflow flows out of the air outlet 131, it flows to the middle area 410. The arc-shaped ribs 431 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 1000 stronger.

[0219] The outer ring region 420 is provided with straight ribs 432 extending in the radial direction. Multiple straight ribs 432 are evenly spaced in the axial direction. When the fan 1000 is in the air dissipation mode, the air outlet 131 is simultaneously positioned opposite the outer ring region 420 and the middle region 410. The airflow flows from the air outlet 131 to the outer ring region 420 and the middle region 410. The straight ribs 432 can maintain the circumferential velocity of the airflow, thereby ensuring the flow area of ​​the airflow in the radial direction and ensuring the air outlet area of ​​the fan 1000 in the radial direction.

[0220] In some embodiments of this application, the air outlet end of the straight rib 432 extends outward at an angle away from the rotation center line of the drive fan 300 in a direction away from the first central axis.

[0221] In the direction in which the straight rib 432 extends, the end of the straight rib 432 away from the support 110 is defined as the air outlet end of the straight rib 432, and the end of the straight rib 432 close to the support 110 is defined as the air inlet end of the straight rib 432.

[0222] In the radial direction of the air outlet area 220, the distance between the air inlet end of the straight rib 432 and the rotation center of the drive fan 300 is the smallest, and the distance between the air outlet end of the straight rib 432 and the rotation center of the drive fan 300 is the largest. This achieves an angled arrangement between the straight rib 432 and the rotation center line of the drive fan 300. The straight rib 432 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 1000 in the radial square.

[0223] In some embodiments of this application, the angle of inclination of the straight rib 432 relative to the rotation center line ranges from 20° to 40°.

[0224] The angle between the straight rib 432 and the rotation center line ranges from 20° to 40°. This setting ensures that the straight rib 432 has low resistance to airflow and maintains the circumferential velocity of the airflow, which helps to ensure the air outlet area of ​​the fan 1000 in the radial square.

[0225] In some embodiments of this application, when the air duct adjustment member 130 is in the air dissipation state, the longitudinal section of the air duct adjustment member 130 extends outward at an angle away from the rotation center line of the drive fan 300 in the direction toward the air outlet 131.

[0226] When the air duct adjuster 130 is in the air dispersion state, the radial distance between the inner wall of the air duct adjuster 130 and the rotation center line of the drive fan 300 gradually increases in the direction towards the air outlet 131. Among them, the radial distance between the inner wall of the air duct adjuster 130 closer to the drive fan 300 and the rotation center line of the drive fan 300 is the smallest, and the radial distance between the inner wall of the air duct adjuster 130 farther from the drive fan 300 and the rotation center line of the drive fan 300 is the largest. When the air duct adjuster 130 is in the air dispersion state, the air outlet angle can be approximately parallel to the straight rib 432 to reduce the air outlet resistance and maintain the circumferential velocity of the airflow.

[0227] In some embodiments of this application, the air outlet cover 400 is detachably disposed in the air outlet area 210 of the fan 1000.

[0228] The air outlet grille 400 can be fastened to the outer casing 200 to cover the opening and prevent the fan 1000 from causing mechanical injury to the user. The air outlet grille 400 is detachably connected to the outer casing 200. When the fan 1000 malfunctions, the air outlet grille 400 can be removed from the outer casing 200 to facilitate the inspection and maintenance of the airflow control mechanism 100, thereby improving the maintenance convenience of the fan 1000.

[0229] The air outlet grille 400 can be detachably connected to the outer casing 200 by means of threaded connection or snap-fit. The specific connection method between the air outlet grille 400 and the outer casing 200 is not specifically limited here, as long as the air outlet grille 400 and the outer casing 200 are detachably connected.

[0230] In some other embodiments of this application, the bracket 110 can be directly used as the housing of the fan 1000, the air inlet area 210 and the air outlet area 220 can be formed on the bracket 110, and in this case, the air outlet mesh cover 400 is disposed on the bracket 110 and detachably connected to the bracket 110.

[0231] In some embodiments of this application, a rear mesh cover is provided on the rear side of the fan 1000, and the air inlet area 210 can be formed on the rear mesh cover. Outside air can flow into the fan 1000 through the rear mesh cover. The driving fan 300 can drive the blades 310 to rotate so that the air flowing into the fan 1000 forms an airflow and blows it out. The airflow can flow through the wind pattern control mechanism 100, which can make the airflow diverge or converge. Then the airflow flows out of the fan 1000 through the air outlet mesh cover 400.

[0232] 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 this application. 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.

[0233] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind type regulating mechanism, wherein, include: The support frame has an annular air duct space; An airflow regulating component is disposed within the air duct space. The airflow regulating component includes multiple layers of guide vanes arranged in the front-to-back direction. The multiple layers of guide vanes include multiple front guide vanes and multiple rear guide vanes. The multiple front guide vanes are located in front of the air outlet of the multiple rear guide vanes and can rotate relative to each other. The multiple front guide vanes are spaced apart circumferentially, and the multiple rear guide vanes are spaced apart circumferentially. The airflow regulating component has a first state and a second state. In the first state, the multiple front guide vanes and the multiple rear guide vanes are at least partially overlapped in the front-to-back direction. In the second state, the multiple front guide vanes and the multiple rear guide vanes are staggered in the circumferential direction.

2. The wind regulating mechanism of claim 1, wherein, In the first state, the plurality of front guide vanes and the plurality of rear guide vanes are arranged facing each other in the front-rear direction. In the second state, the plurality of front guide vanes and the plurality of rear guide vanes are arranged in a staggered manner in the circumferential direction.

3. A wind type regulating mechanism according to claim 1 or 2, wherein, The bracket includes a fixed ring and a rotating ring, the rotating ring being rotatable relative to the fixed ring, and one of the front guide vanes and the other of the rear guide vanes being disposed on the fixed ring and the other being disposed on the rotating ring.

4. The wind type regulation mechanism according to any one of claims 1-3, wherein, Both the front guide vane and the rear guide vane are formed into an arc shape.

5. The wind type regulation mechanism according to any one of claims 1-4, wherein, At least one layer of guide vanes rotates relative to the guide vanes of the remaining layers within a set time period; or At least one layer of guide vanes rotates back and forth relative to the guide vanes of the other layers within a set time period.

6. The wind regulating mechanism of claim 5, wherein, At least one layer of the guide vanes rotates back and forth relative to the guide vanes of the other layers within a set time period.

7. The wind-type regulation mechanism according to any one of claims 1-6, wherein, The width of both the front guide vane and the rear guide vane is L1, where 2mm ≤ L1 ≤ 5mm.

8. A wind type regulating mechanism wherein, include: An air duct has an air inlet side and an air outlet side, and the air duct restricts the airflow from the air inlet side to the air outlet side; An airflow regulating component is disposed in the air duct. The airflow regulating component has a first central axis and includes a plurality of guide vanes spaced apart around the first central axis. The airflow regulating component has a first state and a second state. A first airflow passage is defined between adjacent guide vanes in the first state, and a second airflow passage is defined between adjacent guide vanes in the second state. In a direction parallel to the first central axis, the length of the first airflow passage is greater than the length of the second airflow passage.

9. The wind regulating mechanism of claim 8, wherein, It also includes a ring-shaped bracket that defines the air duct, and the airflow regulator is mounted to the bracket.

10. A wind type regulating mechanism according to claim 9 or 9, wherein, The number of the second airflow passages is greater than the number of the first airflow passages.

11. The wind type regulation mechanism according to any one of claims 1-10, wherein, The airflow regulating component is provided with a first central axis, and the plurality of guide vanes are arranged at intervals around the first central axis; The wind pattern control mechanism further includes an air duct adjuster, which forms an airflow adjustment cavity. The inner wall of the airflow adjustment cavity is deflected relative to the vertical plane of the first central axis under the action of the air duct adjuster. The wind pattern control mechanism has a wind gathering mode and a wind dispersing mode. The inner wall of the airflow adjustment cavity is deflected at a larger angle relative to the vertical plane in the wind dispersing mode than in the wind gathering mode, so that the airflow is restricted by the inner wall of the airflow adjustment cavity in the wind gathering mode, while in the wind dispersing mode, the airflow is guided outward by the inner wall of the airflow adjustment cavity.

12. The wind regulating mechanism of claim 11, wherein, The air duct adjustment component is disposed on the bracket and located on the air outlet side of the airflow adjustment component. The air outlet area of ​​the air duct adjustment component in the air gathering state is smaller than the air outlet area in the air dispersing state.

13. The wind regulating mechanism of claim 12, wherein, The air duct adjustment component includes multiple blades, which are arranged circumferentially along the support of the air pattern control mechanism, and each blade is rotatably mounted on the support.

14. The wind regulating mechanism of claim 13, wherein, In the circumferential direction of the support, adjacent blades have overlapping areas.

15. A wind type regulation mechanism according to any of claims 12-14, wherein, In the air-gathering state, the cross-sectional area of ​​the air duct regulating component gradually decreases in the direction towards the air outlet; and / or In the air distribution state, the cross-sectional area of ​​the air duct adjustment component gradually increases in the direction towards the air outlet.

16. A wind type regulation mechanism, wherein, include: The air duct has an air inlet side and an air outlet side, and the air duct restricts the airflow from the air inlet side to the air outlet side; A duct regulating component is provided on the air outlet side of the duct, and the duct regulating component is provided with an airflow regulating cavity; An airflow regulator is disposed opposite to the airflow regulating cavity, and the airflow regulator is configured to adjust the airflow inside the airflow regulating cavity; the airflow regulator has a first central axis. The inner wall of the airflow regulating cavity is deflected relative to the vertical plane of the first central axis under the action of the air duct regulating component to adjust the airflow of the outer ring of the airflow regulating cavity.

17. The wind regulating mechanism of claim 16, wherein, The wind pattern control mechanism has a wind gathering mode and a wind dispersing mode. The inner wall of the airflow regulating cavity is deflected at a greater angle relative to the vertical plane in the wind dispersing mode than in the wind gathering mode, so that the airflow is restricted by the inner wall of the airflow regulating cavity in the wind gathering mode, while in the wind dispersing mode the airflow is guided by the inner wall of the airflow regulating cavity to diffuse outward.

18. The wind regulating mechanism of claim 17, wherein, The airflow regulating component includes a plurality of guide vanes spaced apart around the first central axis. A first airflow passage is defined between adjacent guide vanes in the wind-gathering mode, and a second airflow passage is defined between adjacent guide vanes in the wind-diffusing mode. In a direction parallel to the first central axis, the length of the first airflow passage is greater than the length of the second airflow passage.

19. A fan, wherein, include: A wind pattern control mechanism, wherein the wind pattern control mechanism is the wind pattern control mechanism according to any one of claims 1-18; A drive fan is located on the air inlet side of the airflow regulating component.

20. The fan of claim 19, wherein, The driving fan is an axial flow fan.

21. The fan of claim 20, wherein, Each of the guide vanes has a cross-section shaped as a curve, which is an Archimedean spiral. The bend of the curve is opposite to the rotation direction of the drive fan blades, and the cross-section is perpendicular to the rotation centerline of the drive fan; and / or A portion of the blades of the drive fan extends into the duct space; and / or In a direction parallel to the rotation center line of the drive fan, the distance between the blades of the drive fan and the air inlet end of the guide vane is L2, where 7mm≤L2≤15mm.

22. The fan of any of claims 19-21, wherein, It also includes an air outlet cover, which is located in the air outlet area of ​​the fan.

23. The fan of claim 22, wherein, 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.

24. The fan of claim 23, wherein, In the axial direction away from the support, the air outlet end of the straight rib extends outward at an angle away from the rotation center line of the drive fan.

25. The fan of claim 24, wherein, The angle of inclination of the straight rib relative to the rotation center line ranges from 20° to 40°.

26. The fan of any of claims 22-25, wherein, The air outlet grille is detachably installed in the air outlet area of ​​the fan.

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