Airflow mode regulation mechanism, fan head, and fan

Abstract

An airflow mode regulation mechanism, a fan head, and a fan. The airflow mode regulation mechanism (100) comprises: an air duct regulation member (1), wherein the air duct regulation member (1) is provided with an airflow regulation cavity (11), the airflow regulation cavity (11) has a first central axis, the inner wall of the airflow regulation cavity (11) is deflectable, the airflow mode regulation mechanism (100) has an air-converging mode and an air-diverging mode, and the inner wall of the airflow regulation cavity (11) exhibits a greater angular deflection relative to a plane perpendicular to the first central axis in the air-diverging mode than in the air-converging mode; and a protective ring (2), wherein at least an air outlet end of the air duct regulation member (1) is movably located in the protective ring (2). The airflow mode regulation mechanism enables regulation of the air delivery range and strength by means of the air duct regulation member.

Description

Air type regulation mechanism, fan head and fan

[0001] Cross-reference to Related Applications

[0002] The present application is based on the Chinese patent application "Air type regulation mechanism and fan" with the application number 2024108339050 and the filing date of June 25, 2024, and claims the priority of the above-mentioned Chinese patent application, the entire contents of which are hereby incorporated by reference into the present application.

[0003] The present application is based on the Chinese patent application "Air type regulation mechanism and fan" with the application number 2024108339050 and the filing date of June 25, 2024, and claims the priority of the above-mentioned Chinese patent application, the entire contents of which are hereby incorporated by reference into the present application. TECHNICAL FIELD

[0004] The present application belongs to the technical field of household appliances, and specifically relates to an air type regulation mechanism, a fan head and a fan. BACKGROUND

[0005] With the increasing of people's living standards, consumers' requirements for fans are also getting higher and higher.

[0006] In related technologies, a guide mechanism for adjusting the airflow direction is provided on the fan, and a front mesh cover is provided on the air outlet side of the guide mechanism. When the fan is working, the airflow guided by the guide mechanism blows out after passing through the front mesh cover.

[0007] In the above technical solution, the front mesh cover increases the wind resistance, affecting the performance of the fan. SUMMARY

[0008] Therefore, the present application proposes an air type regulation mechanism. In the direction parallel to the vertical plane, the protection ring is located on the outer side of the air duct adjusting piece. After the airflow blows out from the air duct adjusting piece, it can be directly discharged, reducing the wind resistance, increasing the air volume and enhancing the performance of the fan.

[0009] A wind pattern control mechanism according to an embodiment of this application includes: a wind duct adjuster having an airflow regulating cavity having a first central axis, the inner wall of the airflow regulating cavity being deflectable relative to the vertical plane of the first central axis under the action of the wind duct adjuster; the wind pattern control mechanism having a wind-gathering mode and a wind-diffusing mode; the inner wall of the airflow regulating cavity being deflected at a greater angle relative to the vertical plane in the wind-diffusing 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-diffusing mode the airflow is guided by the inner wall of the airflow regulating cavity to diffuse outward; and a protective ring located outside the wind duct adjuster in a direction parallel to the vertical plane, at least the air outlet end of the wind duct adjuster being movably located within the protective ring.

[0010] According to the wind pattern control mechanism of this application embodiment, by setting an air duct adjustment component, the wind pattern control mechanism can adjust the air outlet range and air outlet intensity. When the wind pattern control mechanism is in the wind gathering mode, the air outlet intensity is greater; when the wind pattern control mechanism is in the wind dispersing mode, the air outlet area is larger. The air duct adjustment component can switch between the wind gathering mode and the wind dispersing mode to meet different user needs. The air duct adjustment component is protected by a protective ring, which reduces the risk of collision or interference between external objects and the air duct adjustment component, reduces the risk of damage to the air duct adjustment component, and extends the service life of the wind pattern control mechanism. In the direction parallel to the vertical plane, the protective ring is located on the outside of the air duct adjustment component, so the airflow can be directly discharged after being blown out of the air duct adjustment component, reducing wind resistance, increasing air volume, and enhancing fan performance.

[0011] Optionally, the inner wall of the protective ring is provided with a guide surface for guiding the airflow to diffuse outward.

[0012] Optionally, in a longitudinal section parallel to the first central axis, the air guiding surface is formed as an inclined surface or an arc-shaped surface.

[0013] Optionally, in the longitudinal section, the air guide surface is formed as an inclined surface, and in the air dispersion mode, the angle between the inner wall of the airflow regulating cavity and the air guide surface is Q, wherein Q satisfies: -15°≤Q≤15°.

[0014] Optionally, on the air outlet side of the airflow regulating cavity and in a direction parallel to the first central axis, the first air outlet end of the protective ring protrudes outward from the second air outlet end of the air duct regulating member.

[0015] Optionally, in a direction parallel to the first central axis, the distance between the first air outlet and the second air outlet is H, where H satisfies 0 < H ≤ 15 mm.

[0016] Optionally, the maximum distance between the air duct adjusting member and the protection ring in the air diffusion mode is a, and the a satisfies: 0≤a≤15mm.

[0017] Optionally, the air duct adjusting member comprises a plurality of swing leaves arranged along the circumference of the first central axis, and the plurality of swing leaves define the air flow adjusting cavity therebetween, each swing leaf is rotatable relative to the protection ring, and at least a portion of each swing leaf is located within the protection ring.

[0018] Optionally, the swing leaves are integrally rotatable arranged within the protection ring.

[0019] Optionally, in the circumferential direction of the first central axis, adjacent swing leaves have an overlapping region.

[0020] Optionally, in the air gathering mode, the cross-sectional area of the air duct adjusting member gradually decreases in the direction towards the air outlet; and / or, in the air diffusion mode, the cross-sectional area of the air duct adjusting member gradually increases in the direction towards the air outlet.

[0021] Optionally, the air type control mechanism further comprises an air flow adjusting member arranged in the extension direction of the first central axis and spaced apart from the air duct adjusting member, the air flow adjusting member comprises a plurality of guide vanes arranged in the front-rear direction, the plurality of guide vanes comprises a plurality of front side guide vanes and a plurality of rear side guide vanes, the plurality of front side guide vanes is located on the front side of the plurality of rear side guide vanes and rotatable relative to the plurality of rear side guide vanes, the plurality of front side guide vanes is arranged in the circumferential direction and spaced apart, the plurality of rear side guide vanes is arranged in the circumferential direction and spaced apart, in the air gathering mode, the plurality of front side guide vanes and the plurality of rear side guide vanes are arranged in one-to-one front-rear direction, and in the air diffusion mode, the plurality of front side guide vanes and the plurality of rear side guide vanes are arranged in the circumferential direction.

[0022] Optionally, the air duct adjusting member is located on the air outlet side of the air flow adjusting member, and the air outlet area of the air duct adjusting member in the air gathering mode is smaller than the air outlet area of the air duct adjusting member in the air diffusion mode.

[0023] Optionally, the air flow adjusting member comprises a fixed ring and a rotating ring, the rotating ring is rotatable relative to the fixed ring, one of the front side guide vanes and the rear side guide vanes is arranged on the fixed ring, and the other is arranged on the rotating ring.

[0024] Optionally, the front side guide vanes and the rear side guide vanes are both formed in a circular arc shape.

[0025] Optionally, in the extension direction of the first central axis, at least a portion of the protection ring is located between the air flow adjusting member and the air duct adjusting member.

[0026] Optionally, the air duct adjusting member comprises a plurality of swing leaves arranged along the circumference of the first central axis, and the air flow adjusting cavities are defined between the swing leaves, and each swing leaf is provided with a pivot shaft clamped between the air flow adjusting member and the protection ring.

[0027] The fan head according to the embodiments of the present application comprises the air type regulating mechanism in the technical solutions.

[0028] The fan according to the embodiments of the present application comprises the fan head in the technical solutions, or comprises the air type regulating mechanism in the technical solutions, and the driving fan is located at the air inlet side of the air duct space.

[0029] Optionally, the fan further comprises a housing, at least the driving fan is arranged in the housing, the front end surface of the housing is open, and a part of the protection ring extends to overlap the front end surface of the housing.

[0030] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0031] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0032] Fig. 1 is a schematic view of a fan according to an embodiment of the present application;

[0033] Fig. 2 is a schematic view of a fan head of the fan;

[0034] Fig. 3 is a sectional view of the fan head in Fig. 2;

[0035] Fig. 4 is a front view of a protection ring according to some embodiments of the present application;

[0036] Fig. 5 is a sectional view of the protection ring in Fig. 4;

[0037] Fig. 6 is a fan head in a wind gathering mode;

[0038] Fig. 7 is a sectional view of the fan head in Fig. 6;

[0039] Fig. 8 is a fan head in a wind scattering mode;

[0040] Fig. 9 is a sectional view of part of the structure in Fig. 8;

[0041] Fig. 10 is a schematic view of a fan head of the fan;

[0042] Fig. 11 is an enlarged view of part A in Fig. 10.

[0043] Figure 12 is a cross-sectional view of a protection ring according to some other embodiments of this application;

[0044] Figure 13 is a rear view schematic diagram of a protection ring according to some embodiments of this application;

[0045] Figure 14 is a rear view schematic diagram of a wind pattern control mechanism according to an embodiment of this application;

[0046] Figure 15 is a cross-sectional view of a protection ring according to some embodiments of this application.

[0047] Reference numerals: 100, wind pattern control mechanism; 200, fan; 1, air duct adjustment component; 11, airflow adjustment chamber; 12, oscillating blade; 121, first oscillating blade; 122, second oscillating blade; 123, third oscillating blade; 124, pivot shaft; 125, mounting arm; 126, guide rod; 13, air outlet; 2, protective ring; 20, air guide surface; 21, mounting part; 211, clearance groove; 212, first mounting groove; 22, protective part; 23, extension part; 3, airflow adjustment component; 30, guide blade; 31, front guide blade; 32, rear guide blade; 33, fixing ring; 331, rotating shaft; 332, second mounting groove; 34, rotating ring; 341, guide part; 342, guide groove; 35, stop component; 4, drive device; 5, drive fan; 6, outer casing. Detailed Implementation

[0048] 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 are only used to explain this application, and should not be construed as limiting this application.

[0049] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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.

[0050] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] The air type regulating mechanism 100 according to the embodiments of the present application is described below with reference to FIGS. 1-15.

[0052] With reference to FIGS. 1, 2 and 3, the air type regulating mechanism 100 according to the embodiments of the present application is adapted to be arranged at the air outlet side of the driving fan 5 of the fan 200, and plays a role of adjusting the flow direction of the airflow. It should be noted that the airflow flowing through the air type regulating mechanism 100 is generally spiral, which has a circumferential component velocity and an axial component velocity.

[0053] The air type regulating mechanism 100 according to the embodiments of the present application comprises: an air duct adjusting piece 1, the air duct adjusting piece 1 is formed with an airflow adjusting cavity 11, the airflow adjusting cavity 11 has a first central axis, and the inner wall of the airflow adjusting cavity 11 is deflectable relative to the vertical plane of the first central axis under the action of the air duct adjusting piece 1. With reference to FIGS. 6 and 8, the air type regulating mechanism 100 has a wind gathering mode and a wind scattering mode, and the inner wall of the airflow adjusting cavity 11 deflects a larger angle relative to the vertical plane in the wind scattering mode than in the wind gathering mode, so that the airflow is limited by the inner wall of the airflow adjusting cavity 11 in the wind gathering mode, and the airflow is guided to diffuse outward by the inner wall of the airflow adjusting cavity 11 in the wind scattering mode.

[0054] It should be noted that the first central axis is the same as the extension direction of the airflow adjusting cavity 11, and the "vertical plane" does not refer to a plane extending in the vertical direction, but only refers to a plane perpendicular to the first central axis.

[0055] When the airflow flows into the airflow adjusting cavity 11, the inner wall of the airflow adjusting cavity 11 can guide the airflow to adjust the air outlet feeling and the air outlet range of the airflow flowing out of the air duct adjusting piece 1, and when the air duct adjusting piece 1 is adjusted, the inner wall of the airflow adjusting cavity 11 formed by the air duct adjusting piece 1 can deflect relative to the vertical plane of the first central axis, so that the adjustment effect of the inner wall of the airflow adjusting cavity 11 on the airflow can be adjusted.

[0056] The wind type regulation mechanism 100 has a wind gathering mode and a wind scattering mode. When the wind type regulation mechanism 100 is in the wind gathering mode, the inner wall of the air flow adjusting cavity 11 is arranged at an angle with the vertical plane, and the inner wall of the air flow adjusting cavity 11 can regularize the air flow, so that the circumferential component velocity of the air flow is converted into the axial component velocity, thereby causing the air flow out of the air duct adjusting piece 1 to gather towards the first central axis.

[0057] When the wind type regulation mechanism 100 is in the wind scattering mode, the included angle between the inner wall of the air duct adjusting piece 1 and the vertical plane is larger than that when the wind type regulation mechanism 100 is in the wind gathering mode, so as to reduce the adjustment of the circumferential component velocity of the air flow by the inner wall of the air flow adjusting cavity 11. When the air flow out of the air duct adjusting piece 1, the air flow can still maintain a certain circumferential component velocity, so that the air flow out of the air duct adjusting piece 1 is in a conical shape, and the air flow is in a diverging state.

[0058] The wind type regulation mechanism 100 in the embodiment of the present application can adjust the air outlet range and the air outlet intensity by arranging the air duct adjusting piece 1. When the wind type regulation mechanism 100 is in the wind gathering mode, the air flow out of the air duct adjusting piece 1 gathers towards the first central axis, that is, the air flow out of the air duct adjusting piece 1 is in a converging state, and the air outlet intensity of the air flow is larger. When the wind type regulation mechanism 100 is in the wind scattering mode, the air flow out of the air duct adjusting piece 1 diverges away from the first central axis, that is, the air flow out of the air duct adjusting piece 1 is in a diverging state, and the air outlet area of the air flow is larger. The air duct adjusting piece 1 can be switched between the wind gathering mode and the wind scattering mode, so that the wind type regulation mechanism 100 has different working states. The user can adjust the working state of the wind type regulation mechanism 100 according to the actual demand, so as to meet the use demand of the user.

[0059] Referring to FIGS. 3, 5 and 6, the wind type regulation mechanism 100 according to the embodiment of the present application further comprises a protection ring 2. In the direction parallel to the vertical plane, the protection ring 2 is located outside the air duct adjusting piece 1, and at least the air outlet end of the air duct adjusting piece 1 is movably located in the protection ring 2.

[0060] At least the air outlet end of the air duct adjusting piece 1 is movably located in the protection ring 2, so that the air duct adjusting piece 1 is protected by the protection ring 2, thereby reducing the risk of collision and interference between external objects and the air duct adjusting piece 1, reducing the risk of damage to the air duct adjusting piece 1, and prolonging the service life of the wind type regulation mechanism 100.

[0061] In order to distinguish the air outlet end of the protection ring 2 and the air outlet end of the air duct adjusting piece 1, the air outlet end of the protection ring 2 is a first air outlet end, and the air outlet end of the air duct adjusting piece 1 is a second air outlet end.

[0062] Because the second air outlet end of the air duct adjusting piece 1 is located in the protection ring 2, that is, the airflow blows out from the second air outlet end of the air duct adjusting piece 1 and then needs to pass through the first air outlet end of the protection ring 2. In the embodiment of the present application, in the direction parallel to the vertical plane, the protection ring 2 is located outside the air duct adjusting piece 1, that is, in the direction parallel to the first central axis, the protection ring 2 does not have a structure that blocks the air outlet of the air duct adjusting piece 1, for example, the first air outlet end of the protection ring 2 is open, and after the airflow blows out from the air duct adjusting piece 1, the airflow can be directly discharged, thereby reducing the wind resistance, increasing the air volume, and enhancing the performance of the fan 200.

[0063] According to the air type regulation mechanism 100 in the embodiment of the present application, the air duct adjusting piece 1 is arranged to adjust the air outlet range and the air outlet intensity. When the air type regulation mechanism 100 is in the air gathering mode, the air outlet intensity of the airflow is greater, and when the air type regulation mechanism 100 is in the air scattering mode, the air outlet area of the airflow is greater. The air duct adjusting piece 1 can be switched between the air gathering mode and the air scattering mode to meet different use requirements of the user. The protection ring 2 protects the air duct adjusting piece 1, reduces the risk of collision and interference between external objects and the air duct adjusting piece 1, reduces the risk of damage to the air duct adjusting piece 1, and prolongs the service life of the air type regulation mechanism 100. In the direction parallel to the vertical plane, the protection ring 2 is located outside the air duct adjusting piece 1, the airflow can be directly discharged after blowing out from the air duct adjusting piece 1, thereby reducing the wind resistance, increasing the air volume, and enhancing the performance of the fan 200.

[0064] Referring to FIGS. 3, 5 and 6, in some embodiments of the present application, the air duct adjusting piece 1 includes a plurality of swing leaves 12. The plurality of swing leaves 12 are arranged in the circumferential direction of the first central axis, and the airflow adjusting cavities 11 are defined between the plurality of swing leaves 12. Each swing leaf 12 is rotatable relative to the protection ring 2, and at least a portion of each swing leaf 12 is located in the protection ring 2. The air duct adjusting piece 1 in the embodiment of the present application has a simple structure, thereby reducing the cost of the air type regulation mechanism 100.

[0065] Specifically, a plurality of swing leaves 12 are arranged, and the plurality of swing leaves 12 are uniformly arranged in the circumferential direction of the first central axis to form the air duct adjusting piece 1 into a ring shape, and an air outlet 13 is formed at the air outlet end of the air duct adjusting piece 1. The air inlet end of each swing leaf 12 is rotatably connected to the protection ring 2, and when the air inlet end of the swing leaf 12 rotates, the air outlet end of each swing leaf 12 can move towards or away from the first central axis, thereby adjusting the area of the air outlet 13 of the air duct adjusting piece 1 to reduce or increase the area of the air outlet 13, so that the air duct adjusting piece 1 can be switched between the air scattering mode and the air gathering mode. Referring to FIGS. 6 and 8, the air outlet 13 area of the air duct adjusting piece 1 in the air gathering mode is smaller than the air outlet 13 area of the air duct adjusting piece 1 in the air scattering mode.

[0066] It can be understood that when the air inlet end of the swing leaf 12 drives the air outlet end of the swing leaf 12 to rotate towards the direction close to the first central axis, the plurality of swing leaves 12 contract in the radial direction, the area of the air outlet 13 is small, the plurality of swing leaves 12 can regularize the airflow to convert the circumferential component velocity of the airflow into the axial component velocity, so that the air outlet intensity is large, the wind feeling is strong, and the wind channel adjusting piece 1 realizes the wind gathering mode; when the air inlet end of the swing leaf 12 drives the air outlet end of the swing leaf 12 to rotate away from the first central axis, the plurality of swing leaves 12 expand in the radial direction, the area of the air outlet 13 increases, and the swing leaf 12 has small interference to the circumferential component velocity of the airflow. When the airflow is discharged from the wind channel adjusting piece 1, the airflow can still maintain a certain circumferential component velocity, so that the air outlet area is large, the air outlet is soft, and the wind channel adjusting piece 1 realizes the wind dispersing mode.

[0067] It should be noted that at least a part of each swing leaf 12 defined in the above embodiments is located in the protection ring 2, which means that at least the air outlet end of the swing leaf 12 is located in the protection ring 2. For example, in some embodiments, the swing leaf 12 is rotationally connected to the structure outside the protection ring 2, the air inlet end of the swing leaf 12 is located outside the protection ring 2, and the air outlet end of the swing leaf 12 is located inside the protection ring 2; for another example, in some other embodiments, the swing leaf 12 is rotationally connected to the structure inside the protection ring 2, that is, the swing leaf 12 is rotationally arranged inside the protection ring 2.

[0068] Referring to FIGS. 6, 7 and 8, in some embodiments of the present application, adjacent swing leaves 12 have overlapping regions in the circumferential direction of the first central axis.

[0069] Specifically, the air inlet ends of the plurality of swing leaves 12 are sequentially and spaced apart in the circumferential direction, and parts of the adjacent swing leaves 12 can be arranged in an overlapping manner. For example, the swing leaves 12 can include a first swing leaf 121, a second swing leaf 122 and a third swing leaf 123, and the first swing leaf 121, the second swing leaf 122 and the third swing leaf 123 are sequentially and adjacently arranged. In the arrangement direction of the plurality of swing leaves 12, one side of the first swing leaf 121 can be overlapped on the second swing leaf 122, and one side of the second swing leaf 122 away from the first swing leaf 121 can be overlapped on the third swing leaf 123, so as to realize that adjacent swing leaves 12 have overlapping regions, to reduce the gap between adjacent swing leaves 12, reduce the air leakage of the wind channel adjusting piece 1, and ensure the air outlet effect of the air type regulation mechanism 100.

[0070] Referring to FIGS. 7 and 9, in some embodiments of the present application, in the wind gathering mode, the cross-sectional area of the wind channel adjusting piece 1 gradually decreases in the direction towards the air outlet 13; and / or, in the wind dispersing mode, the cross-sectional area of the wind channel adjusting piece 1 gradually increases in the direction towards the air outlet 13.

[0071] Specifically, in the wind gathering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis gradually decreases in the direction towards the air outlet 13, that is, the air duct adjusting piece 1 gradually shrinks towards the first central axis to guide the airflow to gradually concentrate, which is beneficial to increase the flow distance of the airflow in the air outlet direction and can enhance the intensity of the airflow, so that the airflow is more powerful when flowing out of the air type regulation mechanism 100.

[0072] It should be noted that the "inner wall" refers to the side wall surface of the air duct adjusting piece 1 close to the first central axis in the radial direction.

[0073] Specifically, in the wind gathering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis gradually decreases in the direction towards the air outlet 13, that is, the air duct adjusting piece 1 gradually shrinks towards the first central axis to guide the airflow to gradually concentrate, which is beneficial to increase the flow distance of the airflow in the air outlet direction and can enhance the intensity of the airflow, so that the airflow is more powerful when flowing out of the air type regulation mechanism 100.

[0074] Or, in the wind gathering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis gradually decreases in the direction towards the air outlet 13, and in the wind scattering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis remains constant in the direction towards the air outlet 13.

[0075] Or, in the wind gathering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis remains constant in the direction towards the air outlet 13, and in the wind scattering mode, the distance between the inner wall of the air duct adjusting piece 1 and the first central axis gradually increases in the direction towards the air outlet 13.

[0076] In some embodiments of the present application, each swing leaf 12 is formed as an arc-shaped plate.

[0077] Specifically, the plurality of swing leaves 12 are arranged in sequence in the circumferential direction, and each swing leaf 12 is formed as an arc-shaped plate, that is, in the radial direction, the inner side wall (that is, the side wall surface of the swing leaf 12 close to the first central axis in the radial direction) of each swing leaf 12 is arc-shaped and rises away from the first central axis, so as to reduce the influence of the shape of the inner wall of the air duct adjusting piece 1 on the airflow, achieve the purpose of reducing wind resistance, and ensure the flow effect of the airflow.

[0078] Referring to FIGS. 3, 10 and 11, in some embodiments of the present application, the air duct adjusting piece 1 includes a plurality of swing leaves 12, the plurality of swing leaves 12 are arranged in the circumferential direction along the first central axis, the plurality of swing leaves 12 define the above-mentioned airflow adjusting cavity 11 therebetween, each swing leaf 12 is rotatable relative to the protection ring 2, at least a portion of each swing leaf 12 is located within the protection ring 2, and the inner wall of the protection ring 2 is provided with a wind guide surface 20 for guiding the airflow to diffuse outward.

[0079] When the wind type regulation mechanism 100 is in the scattering mode, compared with the wind type regulation mechanism 100 being in the gathering mode, the angle between the inner wall of the air duct adjusting piece 1 and the vertical plane is larger, a gap appears between the two adjacent swing leaves 12, and part of the airflow flows into the space between the protection ring 2 and the swing leaf 12, and then blows out from the first air outlet end of the protection ring 2.

[0080] In the embodiments of the present application, at least part of the inner wall of the protection ring 2 is arranged as the air guide surface 20 for guiding the airflow to diffuse outward, the airflow entering the space between the protection ring 2 and the swing leaf 12 blows out under the guidance of the air guide surface 20, the adjusting effect of the inner wall of the protection ring 2 on the circumferential component velocity of the airflow is reduced, and the airflow flowing out of the air guide surface 20 can still maintain a certain circumferential component velocity. In the scattering mode, the air guide surface 20 cooperates with the air duct adjusting piece 1, the airflow flowing out of the air guide surface 20 converges with the airflow flowing out of the airflow adjusting cavity 11, and the scattering effect of the wind type regulation mechanism 100 is further enhanced.

[0081] If the outer side of the air duct adjusting piece 1 is not provided with the protection ring 2, the airflow flowing in the gap between the two adjacent swing leaves 12 cannot converge with the airflow in the airflow adjusting cavity 11, and the air volume is lost.

[0082] That is to say, the protection ring 2 not only can protect the air duct adjusting piece 1, reduce the risk of collision and interference between external objects and the air duct adjusting piece 1, and reduce the risk of damage to the air duct adjusting piece 1, but also can guide part of the airflow and enhance the scattering effect of the wind type regulation mechanism 100 in the scattering mode.

[0083] It should be understood that when the wind type regulation mechanism 100 is in the gathering mode, compared with the wind type regulation mechanism 100 being in the scattering mode, the arrangement of the plurality of swing leaves 12 is more compact, the overlapping area of the two adjacent swing leaves 12 is larger, and there is almost no gap between the two adjacent swing leaves 12, so that the airflow blown out by the driving fan 5 is basically gathered in the direction close to the first central axis under the guidance of the air duct adjusting piece 1, and the air outlet strength is enhanced. A very small part of the airflow flows into the space between the protection ring 2 and the swing leaf 12, but this part of the airflow is too small to be ignored.

[0084] In some embodiments of the present application, the air guide surface 20 is formed as an inclined surface in the longitudinal section parallel to the first central axis.

[0085] In the embodiments of the present application, the structure of the air guide surface 20 is simple, easy to form, and reduces the cost of the wind type regulation mechanism 100.

[0086] In some further embodiments, the air guide surface 20 is formed as an inclined surface in the longitudinal section parallel to the first central axis, and the angle between the inner wall of the airflow adjusting cavity 11 and the air guide surface 20 in the scattering mode is Q, and Q satisfies: -15°≤Q≤15°.

[0087] When the air type regulation mechanism 100 is in the air diffusion mode, a gap appears between the two adjacent swing leaves 12, and part of the air flow will flow into the space between the protection ring 2 and the swing leaves 12 from the gap. The air flow between the protection ring 2 and the swing leaves 12 will be blown out under the guidance of the air guide surface 20, and then will be combined with the air flow out of the air flow regulation chamber 11. In order to ensure the air diffusion effect of the air type regulation mechanism 100, the flow direction of the air flow out of the air guide surface 20 is preferably parallel to the flow direction of the air flow out of the air flow regulation chamber 11. That is, preferably, the inner wall of the air flow regulation chamber 11 in the air diffusion mode is parallel to the air guide surface 20. At this time, the air flow out of the air guide surface 20 and the air flow out of the air flow regulation chamber 11 will not interfere with each other, and the air diffusion effect of the air type regulation mechanism 100 is best.

[0088] If the angle Q between the inner wall of the air flow regulation chamber 11 and the air guide surface 20 in the air diffusion mode is greater than 15°, the distance between the air outlet end of the air guide surface 20 and the air outlet end of the air flow regulation chamber 11 will be too large. Compared with the air flow out of the air flow regulation chamber 11, the circumferential component velocity of the air flow out of the air guide surface 20 is larger, and the axial component velocity is smaller, which affects the axial component velocity of the air flow out of the air type regulation mechanism 100 as a whole, and shortens the air supply distance of the air type regulation mechanism 100.

[0089] If the angle Q between the inner wall of the air flow regulation chamber 11 and the air guide surface 20 in the air diffusion mode is less than -15°, the distance between the air outlet end of the air guide surface 20 and the air outlet end of the air flow regulation chamber 11 will be too small. Compared with the air flow out of the air flow regulation chamber 11, the circumferential component velocity of the air flow out of the air guide surface 20 is smaller, and the axial component velocity is larger, which affects the circumferential component velocity of the air flow out of the air flow regulation chamber 11, that is, affects the divergence of the air flow, and reduces the air diffusion effect of the air type regulation mechanism 100.

[0090] Therefore, in the embodiments of the present application, the range of the angle Q between the inner wall of the air flow regulation chamber 11 and the air guide surface 20 in the air diffusion mode is limited, and Q satisfies: -15°≤Q≤15°. Within this range, the air flow out of the air guide surface 20 has less influence on the air flow out of the air flow regulation chamber 11, and the air type regulation mechanism 100 has better air diffusion effect.

[0091] In some specific embodiments, the angle Q between the inner wall of the air flow regulation chamber 11 and the air guide surface 20 in the air diffusion mode is 5°, and in some other embodiments, the angle Q between the inner wall of the air flow regulation chamber 11 and the air guide surface 20 in the air diffusion mode can also be -15°, -5°, 7°, 12°, or other degrees.

[0092] In some of the above-mentioned embodiments, the air guide surface 20 is formed as an inclined surface in a longitudinal section parallel to the first central axis. Referring to FIG. 12, in other embodiments, the air guide surface 20 can also be formed as an arc surface in a longitudinal section parallel to the first central axis. In the embodiments of the present application, the air guide surface 20 is formed as an arc surface, which reduces the influence of the shape of the air guide surface 20 on the airflow, thereby reducing the wind resistance and ensuring the flow effect of the airflow.

[0093] Referring to FIG. 3, in some embodiments of the present application, the first air outlet end of the protection ring 2 protrudes outwardly beyond the second air outlet end of the air duct adjusting member 1 in a direction parallel to the first central axis on the air outlet side of the airflow adjusting cavity 11.

[0094] In the embodiments of the present application, the second air outlet end of the air duct adjusting member 1 is located within the protection ring 2, and the second air outlet end of the air duct adjusting member 1 is at a certain distance from the first air outlet end of the protection ring 2, which further reduces the risk of collision and interference between external objects and the air duct adjusting member 1, reduces the risk of damage to the air duct adjusting member 1, and prolongs the service life of the air type regulation mechanism 100.

[0095] In some preferred embodiments, the distance H between the first air outlet end and the second air outlet end in a direction parallel to the first central axis satisfies: 0 < H ≤ 15 mm.

[0096] If the distance H between the first air outlet end and the second air outlet end is greater than 15 mm, the first air outlet end of the protection ring 2 will protrude outwardly beyond the second air outlet end of the air duct adjusting member 1 by too much, which will increase the overall space occupied by the air type regulation mechanism 100, and is not conducive to the miniaturization of the fan 200.

[0097] In the embodiments of the present application, the range of the distance H between the first air outlet end and the second air outlet end is limited, so that the protection ring 2 can well protect the air duct adjusting member 1, and at the same time, the overall size of the air type regulation mechanism 100 is within a suitable range, and the structure of the fan 200 will not be bloated.

[0098] In some of the above-mentioned embodiments, the first air outlet end of the protection ring 2 protrudes outwardly beyond the second air outlet end of the air duct adjusting member 1 in a direction parallel to the first central axis on the air outlet side of the airflow adjusting cavity 11. Referring to FIG. 7, in other embodiments, the first air outlet end of the protection ring 2 is flush with the second air outlet end of the air duct adjusting member 1 in a direction parallel to the first central axis on the air outlet side of the airflow adjusting cavity 11, that is, the distance H between the first air outlet end and the second air outlet end is 0, as long as the second air outlet end of the air duct adjusting member 1 is located within the protection ring 2, which is within the protection scope of the present application.

[0099] Referring to FIG. 11, in some embodiments of the present application, in the air diffusion mode, the maximum distance between the air duct adjusting member 1 and the protection ring 2 is a, and a satisfies: 0≤a≤15mm.

[0100] In the air diffusion mode, the smaller the maximum distance a between the air duct adjusting member 1 and the protection ring 2 is, the better. When the protection ring 2 is completely attached to the air duct adjusting member 1 (i.e., a is 0), the airflow cannot move between the air duct adjusting member 1 and the protection ring 2, at this time, all the airflow moves in the airflow adjusting cavity 11, and the air diffusion effect of the air duct adjusting member 1 is the most ideal.

[0101] However, in order to prevent mechanical injury (such as pinching hands, etc.), in some embodiments, a gap is left between the air duct adjusting member 1 and the protection ring 2, that is, the maximum distance a between the air duct adjusting member 1 and the protection ring 2 is greater than 0. The maximum distance a between the air duct adjusting member 1 and the protection ring 2 should not be too large. The larger the gap between the air duct adjusting member 1 and the protection ring 2, the more airflow flows between the air duct adjusting member 1 and the protection ring 2, the smaller the influence of the protection ring 2 on the part of the airflow, and the more uncontrollable the movement direction and speed of the airflow out of the air type control mechanism 100 as a whole.

[0102] Therefore, in the embodiments of the present application, the maximum distance a between the air duct adjusting member 1 and the protection ring 2 is limited to 0≤a≤15mm, which reduces the risk of the movement direction and speed of the airflow out of control, and ensures the air diffusion effect of the air type control mechanism 100 in the air diffusion mode.

[0103] Referring to FIGS. 3, 7 and 9, in some embodiments of the present application, the air type control mechanism 100 further comprises an airflow adjusting member 3, which is arranged in the extension direction of the first central axis and is spaced apart from the air duct adjusting member 1. The airflow adjusting member 3 comprises a plurality of guide vanes 30 arranged in the front-rear direction. The plurality of guide vanes 30 comprises a plurality of front guide vanes 31 and a plurality of rear guide vanes 32. The plurality of front guide vanes 31 is located on the outflow front side of the plurality of rear guide vanes 32 and can rotate relative to the plurality of rear guide vanes 32. The plurality of front guide vanes 31 is arranged in the circumferential direction. The plurality of rear guide vanes 32 is arranged in the circumferential direction. In the air concentration mode, the plurality of front guide vanes 31 and the plurality of rear guide vanes 32 are arranged in one-to-one correspondence in the front-rear direction. In the air diffusion mode, the plurality of front guide vanes 31 and the plurality of rear guide vanes 32 are arranged in the circumferential direction.

[0104] It should be noted that the plurality of guide vanes 30 is at least two guide vanes 30, that is, the plurality of guide vanes 30 can be two guide vanes 30, three guide vanes 30 or four guide vanes 30 arranged in the front-rear direction. It should also be noted that each guide vane 30 comprises a plurality of guide vanes 30 arranged in the circumferential direction, that is, the plurality of front guide vanes 31 is located in the same layer, and the plurality of rear guide vanes 32 is located in the same layer.

[0105] Specifically, the plurality of front guide vanes 31 are arranged in sequence and spaced apart in the circumferential direction, a front gap is formed between every two adjacent front guide vanes 31 for the airflow to pass through, the plurality of rear guide vanes 32 are arranged in sequence and spaced apart in the circumferential direction, a rear gap is formed between every two adjacent rear guide vanes 32 for the airflow to pass through, and the front guide vanes 31 and the rear guide vanes 32 are arranged along the extension direction of the first central axis, the front guide vanes 31 are located at the air outlet end of the rear guide vanes 32, the airflow flows through the rear guide vanes 32 from the air inlet end of the rear guide vanes 32 and flows into the gap between the plurality of front guide vanes 31 through the air outlet end of the rear guide vanes 32, and the rear guide vanes 32 and the front guide vanes 31 can both guide the airflow, thereby adjusting the flow direction of the airflow.

[0106] Further, the plurality of front guide vanes 31 and the plurality of rear guide vanes 32 can move relative to each other to switch the airflow adjusting member 3 between the air concentrating mode and the air diffusing mode. Referring to FIGS. 6 and 7, in the air concentrating mode, the plurality of front guide vanes 31 and the plurality of rear guide vanes 32 are arranged one by one and correspondingly in the extension direction of the first central axis, at this time, the front gap and the rear gap are opposite to each other, the airflow flows into the rear gap, the rear guide vanes 32 guide the airflow, and then the airflow continues to flow into the front gap, so that the front gap further guides the airflow, the circumferential component velocity of the airflow is converted into the axial component velocity, so that the airflow can be concentrated towards the first central axis, the front gap and the rear gap form a continuous flow space, the front guide vanes 31 and the rear guide vanes 32 can continuously guide the airflow, so as to continuously adjust the airflow, improve the flow regulation effect of the airflow adjusting member 3 on the airflow, improve the effect of converting the circumferential component velocity of the airflow into the axial component velocity, reduce the flow area of the airflow in the radial direction when the airflow flows out of the airflow adjusting member 3, so that the airflow after flowing out presents a cylindrical shape, and the axial velocity of the airflow when flowing out is large, so that the air outlet intensity is large.

[0107] Referring to FIGS. 8 and 9, in the air diffusing mode, the front projection of each rear guide vane 32 is located between the front projections of every two adjacent front guide vanes 31 in the extension direction of the first central axis, that is, the rear guide vanes 32 are arranged opposite to the front gap in the axial direction, so as to realize the misalignment of the plurality of front guide vanes 31 and the plurality of rear guide vanes 32 in the circumferential direction, the misalignment of the front gap and the rear gap, and the front guide vanes 31 and the rear guide vanes 32 cannot continuously guide the airflow. Compared with the air concentrating mode, the guiding time of the airflow by the rear guide vanes 32 when the airflow flows into the rear gap is short, and similarly, the guiding time of the airflow by the front guide vanes 31 when the airflow flows into the front gap is short. The flow regulation effect of the airflow adjusting member 3 on the airflow is reduced as a whole, the airflow can maintain the circumferential component velocity when flowing through the airflow adjusting member 3, so that the airflow presents a conical shape when flowing out of the airflow adjusting member 3, and the divergence state of the airflow when flowing out is ensured.

[0108] It should be noted that the size of the front side gap in the direction parallel to the first central axis is the length dimension of the front side gap, and the size of the rear side gap in the direction parallel to the first central axis is the length dimension of the rear side gap.

[0109] The air flow adjusting piece 3 is provided, the air flow adjusting piece 3 is provided with a front side vane 31 and a rear side vane 32, in the air gathering mode, the front side vane 31 and the rear side vane 32 are oppositely arranged in the front-rear direction, the front side vane 31 and the rear side vane 32 can continuously guide the air flow, improve the guiding effect of the air flow adjusting piece 3 on the air flow, improve the effect of converting the circumferential component velocity of the air flow into the axial component velocity, reduce the flow area of the air flow in the radial direction when the air flow flows out of the air flow adjusting piece 3, and make the axial velocity of the air flow when the air flow flows out large, the air flow is in a converging state when the air flow flows out, and the air outflow intensity is large; in the air scattering mode, the air flow adjusting piece 3 has small air flow straightening effect, and the circumferential component velocity of the air flow can be maintained when the air flow flows through the air flow adjusting piece 3, so that the air flow can be in a conical shape when the air flow flows out of the air flow adjusting piece 3, and the divergence state of the air flow when the air flow flows out is ensured. Therefore, the air type control mechanism 100 adjusts the air outflow range and the air outflow intensity of the air flow, and the working state of the air type control mechanism 100 can be switched, and the user can adjust the working state of the air type control mechanism 100 according to the actual use demand to meet different use demands of the user.

[0110] In some embodiments, the air duct adjusting piece 1 is located on the air outflow side of the air flow adjusting piece 3.

[0111] In the air gathering mode, after the air flow adjusting piece 3 converges and adjusts the air flow, the air flow flows to the air duct adjusting piece 1, the air duct adjusting piece 1 can further converge and straighten the air flow, and ensure the convergence effect of the air flow flowing out of the air type control mechanism; in the air scattering mode, the spiral air flow maintains the circumferential component velocity after passing through the air flow adjusting piece 3, and the air duct adjusting piece 1 can further maintain the circumferential component velocity of the air flow after the air flow flows out of the air flow adjusting piece 3, and ensure the divergence effect of the air flow flowing out of the air type control mechanism 100.

[0112] Therefore, by cooperating the air duct adjusting piece 1 with the air flow adjusting piece 3, the guiding effect of the air type control mechanism 100 on the air flow is improved, thereby improving the adjusting effect of the air type control mechanism on the air flow, and making the air outflow feeling have obvious differences, which is beneficial to meet different use demands of the user and improve the use experience of the user.

[0113] In some embodiments of the present application, the front side vane 31 and the rear side vane 32 are formed in a circular arc shape.

[0114] Specifically, the cross section of the front guide vane 31 perpendicular to the first central axis is formed in a circular arc shape, and similarly, the cross section of the rear guide vane 32 perpendicular to the first central axis is also formed in a circular arc shape, so as to reduce the wind resistance when the air flow flows through the front guide vane 31 and the rear guide vane 32, and ensure the flow effect of the air flow. Of course, it can be understood that the front guide vane 31 and the rear guide vane 32 can also be formed in other shapes, for example, formed in a straight line type.

[0115] Referring to FIGS. 3, 7 and 9, in some embodiments of the present application, the air flow adjusting piece 3 includes a fixed ring 33 and a rotating ring 34, the rotating ring 34 is rotatable relative to the fixed ring 33, one of the front guide vane 31 and the rear guide vane 32 is arranged on the fixed ring 33 and the other is arranged on the rotating ring 34.

[0116] Specifically, the fixed ring 33 and the rotating ring 34 are respectively used to provide mounting positions for the front guide vane 31 and the rear guide vane 32, the fixed ring 33 is formed with an annular mounting space, the rotating ring 34 is formed with an annular arrangement space, and the annular mounting space and the annular arrangement space are arranged opposite in the axial direction, the front guide vane 31 can be mounted on the fixed ring 33, and the rear guide vane 32 can be mounted on the rotating ring 34; of course, it can be understood that the front guide vane 31 can also be mounted on the rotating ring 34, and the rear guide vane 32 can be mounted on the fixed ring 33, as long as the front guide vane 31 and the rear guide vane 32 can rotate relative to each other.

[0117] Further, the rotating ring 34 can rotate relative to the fixed ring 33, so that the front guide vane 31 and the rear guide vane 32 can rotate relative to each other, when it is necessary to adjust the air outlet state, the rotating ring 34 can be driven to rotate, so that the front guide vane 31 and the rear guide vane 32 rotate relative to each other, so as to adjust the position between the front guide vane 31 and the rear guide vane 32, so that the front guide vane 31 and the rear guide vane 32 are opposite in the front-rear direction or the front guide vane 31 and the rear guide vane 32 are arranged in the circumferential direction, so as to adjust the working state of the air flow adjusting piece 3.

[0118] In some embodiments, at least part of the protection ring 2 is located between the air flow adjusting piece 3 and the air duct adjusting piece 1 in the extension direction of the first central axis, so as to realize the connection among the protection ring 2, the air flow adjusting piece 3 and the air duct adjusting piece 1, and improve the tightness of the assembly of the air type control mechanism 100.

[0119] Referring to FIG. 3, FIG. 5 and FIG. 7, in some embodiments, the protection ring 2 comprises a mounting portion 21 extending along a radial direction perpendicular to the first central axis and located between the airflow adjusting member 3 and the air duct adjusting member 1, and a protection portion 22 connected to a side of the mounting portion 21 away from the first central axis and extending along the extension direction of the first central axis and away from the first central axis, the protection portion 22 sheaths the air duct adjusting member 1 to protect the air duct adjusting member 1, and an inner wall of the protection portion 22 is formed as the aforementioned air guide surface 20.

[0120] Referring to FIG. 4, FIG. 6 and FIG. 7, in some further embodiments, the swing leaf 12 is provided with a pivot shaft 124 clamped between the airflow adjusting member 3 and the mounting portion 21, the mounting portion 21 is provided with a first mounting groove 212 on a side facing the airflow adjusting member 3, the airflow adjusting member 3 is provided with a second mounting groove 332 on a side facing the mounting portion 21, and the pivot shaft 124 is rotatably arranged between the first mounting groove 212 and the second mounting groove 332.

[0121] Referring to FIG. 6, FIG. 7 and FIG. 13, the swing leaf 12 is further provided with a mounting arm 125 connected with the pivot shaft 124, the mounting portion 21 is provided with an avoiding groove 211 avoiding the mounting arm 125, one end of the mounting arm 125 is connected with the swing leaf 12, and the other end passes through the avoiding groove 211 to be connected with the pivot shaft 124, and the pivot shaft 124 is rotatably arranged between the airflow adjusting member 3 and the mounting portion 21 to realize the rotatability of the swing leaf 12.

[0122] Each swing leaf 12 is connected with two mounting arms 125, and the two ends of the pivot shaft 124 are connected between the two mounting arms 125, further improving the stability of the swing leaf 12.

[0123] Specifically, in some embodiments, the front side vane 31 is mounted on the fixed ring 33, and the rear side vane 32 is mounted on the rotating ring 34, i.e., the fixed ring 33 is arranged between the mounting portion 21 of the protection ring 2 and the rotating ring 34, the pivot shaft 124 of the swing leaf 12 is rotatably arranged between the mounting portion 21 and the fixed ring 33, and the mounting portion 21 and the fixed ring 33 are connected by fasteners, which are screws or bolts, having high connection stability and low cost.

[0124] Referring to FIG. 7, in some embodiments, the fixed ring 33 is fixed on the mounting portion 21 by screws, the pivot shaft 124 of the swing leaf 12 is rotatably arranged between the mounting portion 21 and the fixed ring 33, and the fixed ring 33 is provided with a rotating shaft 331 on a side away from the mounting portion 21, and a part of the rotating ring 34 sheaths the rotating shaft 331 to realize the rotatability of the rotating ring 34 relative to the fixed ring 33.

[0125] Referring to FIG. 3, in some further embodiments, the rotation shaft 331 is fixed with the stop piece 35 through the fastener, and the stop piece 35 stops the rotation ring 34 from moving away from the rotation shaft 331 to limit the rotation ring 34 from moving away from the rotation shaft 331, thereby ensuring the stability of the rotation of the rotation ring 34.

[0126] Referring to FIG. 7 and FIG. 14, in some embodiments, the rotation of the swing leaf 12 is linked with the rotation of the rotation ring 34 to improve the smoothness of the switching of the air type adjustment mechanism 100 between the air gathering mode and the air scattering mode.

[0127] Specifically, the swing leaf 12 is connected with the guide rod 126, and the guide rod 126 is arranged on the side of the mounting arm 125 away from the swing leaf 12.

[0128] The rotation ring 34 is provided with a plurality of guide portions 341 arranged at intervals in the circumferential direction, and the guide portions 341 extend in the radial direction away from the rotation ring 34 to be opposite to the guide rod 126. The guide portions 341 are formed with inclined guide grooves 342, that is, one end of the guide groove 342 is arranged close to the rotation ring 34 in the radial direction, and the other end of the guide groove 342 is arranged away from the rotation ring 34 in the radial direction. The guide rod 126 is arranged in the guide groove 342. When the rotation ring 34 rotates relative to the fixed ring 33, the inner groove wall of the guide groove 342 can press against the guide rod 126 to make it slide in the guide groove 342. At the same time, since the guide groove 342 is arranged obliquely, the guide rod 126 slides in the guide groove 342, and at the same time, the guide rod 126 moves obliquely in the radial direction towards the first central axis or away from the first central axis. For example, the guide groove 342 can drive the end of the guide rod 126 away from the swing leaf 12 to move in the radial direction towards the first central axis, at this time, the air outlet end of the swing leaf 12 rotates away from the first central axis; when the guide groove 342 drives the end of the guide rod 126 away from the swing leaf 12 to move in the radial direction away from the first central axis, at this time, the air outlet end of the swing leaf 12 rotates towards the first central axis.

[0129] Specifically, when the guide rod 126 slides in the guide groove 342 to the end closest to the first central axis, the guide rod 126 drives the air outlet end of the swing leaf 12 to move away from the first central axis, and the air outlet end of the swing leaf 12 rotates to be farthest from the first central axis, at this time, the area of the air outlet 13 of the air duct adjusting piece 1 is largest, and the air duct adjusting piece 1 is in the air scattering mode.

[0130] When the guide rod 126 slides in the guide groove 342 to the end farthest from the first central axis, the guide rod 126 drives the air outlet end of the swing leaf 12 to move towards the first central axis, and the air outlet end of the swing leaf 12 rotates to be closest to the first central axis, at this time, the area of the air outlet 13 of the air duct adjusting piece 1 is smallest, and the air duct adjusting piece 1 is in the air gathering mode.

[0131] Referring to FIG. 14, in some embodiments of the present application, the air type regulation mechanism 100 further comprises a driving device 4, which is in transmission connection with the rotating ring 34 to drive the rotating ring 34 to rotate, so as to realize the relative rotation of the front guide vane 31 and the rear guide vane 32 and the rotation of the swing vane 12, to adjust the working state of the air type regulation mechanism 100, wherein the driving device 4 can realize manual driving or automatic driving of the rotating ring 34.

[0132] Specifically, when the rotating ring 34 is manually driven, the driving device 4 can be configured as a pull rod, which is arranged on the rotating ring 34 and extends in a direction away from the first central axis in a radial direction. A user can manually drive the pull rod to make the rotating ring 34 rotate relative to the fixed ring 33, so as to realize the relative rotation of the front guide vane 31 and the rear guide vane 32 and the rotation of the swing vane 12, so that the air type regulation mechanism 100 can be switched between the air gathering mode and the air scattering mode, realizing manual adjustment of the working state of the air type regulation mechanism 100 by the user.

[0133] When the rotating ring 34 is automatically driven, a driving part is arranged on the rotating ring 34, and the driving device 4 can be configured as a driving motor, the output end of which is connected with the driving part to drive the rotating ring 34 to rotate.

[0134] It can be understood that the driving device 4 can be arranged outside the rotating ring 34, or the driving device 4 can also be arranged inside the rotating ring 34, as long as the driving device 4 can drive the rotating ring 34, and the specific arrangement mode is not limited herein.

[0135] The fan head according to the embodiments of the present application comprises the air type regulation mechanism 100 in the above technical solutions.

[0136] The fan head according to the embodiments of the present application, by arranging the air duct adjusting piece 1, the air type regulation mechanism 100 can adjust the air outlet range and the air outlet intensity. When the air type regulation mechanism 100 is in the air gathering mode, the air outlet intensity of the airflow is large, and when the air type regulation mechanism 100 is in the air scattering mode, the air outlet area of the airflow is large. The air duct adjusting piece 1 can be switched between the air gathering mode and the air scattering mode to meet different use requirements of the user. The protection ring 2 protects the air duct adjusting piece 1, reduces the risk of collision and interference between external objects and the air duct adjusting piece 1, reduces the risk of damage to the air duct adjusting piece 1, and prolongs the service life of the air type regulation mechanism 100. In the direction parallel to the vertical plane, the protection ring 2 is located outside the air duct adjusting piece 1. After the airflow is blown out from the air duct adjusting piece 1, it can be directly discharged, reducing the wind resistance, increasing the air volume, and enhancing the performance of the fan 200.

[0137] Referring to FIG. 1, FIG. 2 and FIG. 3, the fan 200 according to the embodiments of the present application comprises: the fan head in the above technical solution; or, the fan 200 comprises: the fan type regulation mechanism 100 and the driving fan 5, wherein the fan type regulation mechanism 100 is the fan type regulation mechanism 100 in the above technical solution, and the driving fan 5 is located at the air inlet side of the fan type regulation mechanism 100.

[0138] According to the fan 200 of the embodiments of the present application, by arranging the air duct adjusting piece 1, the fan type regulation mechanism 100 can adjust the air outlet range and the air outlet intensity. When the fan type regulation mechanism 100 is in the air gathering mode, the air outlet intensity of the airflow is large, and when the fan type regulation mechanism 100 is in the air scattering mode, the air outlet area of the airflow is large. The air duct adjusting piece 1 can be switched between the air gathering mode and the air scattering mode to meet different use requirements of the user. The protection ring 2 protects the air duct adjusting piece 1, reduces the risk of collision and interference between external objects and the air duct adjusting piece 1, reduces the risk of damage to the air duct adjusting piece 1, and prolongs the service life of the fan type regulation mechanism 100. In the direction parallel to the vertical plane, the protection ring 2 is located outside the air duct adjusting piece 1. After the airflow is blown out from the air duct adjusting piece 1, it can be directly discharged, reducing the wind resistance, increasing the air volume, and enhancing the performance of the fan 200.

[0139] Referring to FIG. 1, FIG. 2 and FIG. 3, in some embodiments, the fan 200 further comprises: a housing 6, at least the driving fan 5 is arranged in the housing 6, the front end surface of the housing 6 is open, and a part of the protection ring 2 extends to overlap and cooperate with the front end surface of the housing 6.

[0140] Specifically, the protection ring 2 comprises a mounting portion 21 and a protection portion 22. The mounting portion 21 extends in the radial direction perpendicular to the first central axis. The protection portion 22 is connected to the side of the mounting portion 21 away from the first central axis. The protection portion 22 extends in the extension direction of the first central axis and away from the first central axis. The protection portion 22 sheaths the air duct adjusting piece 1 to protect the air duct adjusting piece 1.

[0141] Referring to FIG. 3, FIG. 4 and FIG. 5, in the embodiments of the present application, the protection ring 2 further comprises an extension portion 23. The extension portion 23 is connected to the side of the protection portion 22 away from the mounting portion 21. The extension portion 23 extends towards the front end surface of the housing 6 and overlaps and cooperates with the front end surface of the housing 6.

[0142] In the embodiments of the present application, the extension portion 23 closes the gap between the protection portion 22 and the housing 6, reduces the possibility of foreign matter entering the inside of the housing 6, reduces the risk of damage to the fan 200, and prolongs the service life of the fan 200.

[0143] It should be noted that the connection mode of the extension part 23 and the shell 6 can be screwing, clamping or connecting through other fasteners, as long as the extension part 23 is fixed to the shell 6, and the application does not limit this.

[0144] It should be noted that in the embodiments of the application, the protection ring 2 is provided with the extension part 23, which closes the gap between the protection part 22 and the shell 6; referring to FIG. 15, in other embodiments, the protection ring 2 can only include the mounting part 21 and the protection part 22, and does not provide the extension part 23, and the front end surface of the shell 6 can extend to directly abut against the protection part 22.

[0145] In some embodiments, the air duct adjusting piece 1 is mounted to the protection ring 2, and the extension part 23 of the protection ring 2 is adapted to be connected with other parts of the fan 200 to fix the entire air type regulating mechanism 100. It should be noted that the above-mentioned other parts of the fan 200 can be the shell of the fan head of the fan or the fixed structure in the fan head, as long as the entire air type regulating module can be fixed.

[0146] In the embodiments of the application, the air type regulating mechanism 100 is an independent module, which can be assembled as a whole to the fan 200, thereby improving the assembly efficiency of the fan 200.

[0147] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0148] Although the embodiments of the application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the application, and the scope of the application is defined by the claims and their equivalents.

Claims

1. A wind pattern control mechanism, wherein, include: An air duct adjuster is provided, wherein an airflow adjusting cavity is formed, the airflow adjusting cavity has a first central axis, and the inner wall of the airflow adjusting cavity can be deflected relative to the vertical plane of the first central axis under the action of the air duct adjuster. The airflow control mechanism has an air gathering mode and an air dispersing mode. The inner wall of the airflow adjusting cavity deflects at a larger angle relative to the vertical plane in the air dispersing mode than in the air gathering mode, so that the airflow is restricted by the inner wall of the airflow adjusting cavity in the air gathering mode, while the airflow diffuses outward under the guidance of the inner wall of the airflow adjusting cavity in the air dispersing mode. A protective ring is located outside the air duct adjuster in a direction parallel to the vertical plane, and at least the air outlet end of the air duct adjuster is movably located inside the protective ring.

2. The wind pattern control mechanism according to claim 1, wherein, The inner wall of the protective ring is provided with a guide surface for guiding the airflow to diffuse outward.

3. The wind pattern control mechanism according to claim 2, wherein, In a longitudinal section parallel to the first central axis, the air guide surface is formed as an inclined surface or an arc-shaped surface.

4. The wind pattern control mechanism according to claim 3, wherein, In the longitudinal section, the air guide surface is formed as an inclined surface, and in the air dispersion mode, the angle between the inner wall of the airflow regulating cavity and the air guide surface is Q, where Q satisfies: -15°≤Q≤15°.

5. The wind pattern control mechanism according to any one of claims 1-4, wherein, On the air outlet side of the airflow regulating cavity and in a direction parallel to the first central axis, the first air outlet end of the protective ring protrudes outward from the second air outlet end of the air duct regulating member.

6. The wind pattern control mechanism according to claim 5, wherein, In a direction parallel to the first central axis, the distance between the first air outlet and the second air outlet is H, where H satisfies: 0 < H ≤ 15 mm.

7. The wind pattern control mechanism according to any one of claims 1-6, wherein, In the air distribution mode, the maximum distance between the air duct adjustment component and the protective ring is a, where a satisfies: 0≤a≤15mm.

8. The wind pattern control mechanism according to any one of claims 1-7, wherein, The air duct regulating component includes multiple blades arranged circumferentially along the first central axis, defining the airflow regulating cavity between the multiple blades, each blade being rotatable relative to the protective ring, and at least a portion of each blade being located within the protective ring.

9. The wind pattern control mechanism according to claim 8, wherein, The entire oscillating blade is rotatably mounted within the protective ring.

10. The wind pattern control mechanism according to claim 8 or 9, wherein, In the circumferential direction of the first central axis, adjacent blades have overlapping areas.

11. The wind pattern control mechanism according to any one of claims 1-10, wherein, In the air-gathering mode, 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 mode, the cross-sectional area of ​​the air duct adjustment component gradually increases in the direction towards the air outlet.

12. The wind pattern control mechanism according to any one of claims 1-11, wherein, Also includes: An airflow regulating component is provided at intervals with the duct regulating component along the extension direction of the first central axis. 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. In the air-gathering mode, the multiple front guide vanes and the multiple rear guide vanes are arranged facing each other in the front-to-back direction. In the air-diffusing mode, the multiple front guide vanes and the multiple rear guide vanes are staggered in the circumferential direction.

13. The wind pattern control mechanism according to claim 12, wherein, The air duct adjustment component is located on the air outlet side of the airflow adjustment component, and the air outlet area of ​​the air duct adjustment component in the air gathering mode is smaller than the air outlet area in the air dispersing mode.

14. The wind pattern control mechanism according to claim 12 or claim 13, wherein, The airflow regulating component 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.

15. The wind pattern control mechanism according to any one of claims 12-14, wherein, Both the front guide vane and the rear guide vane are formed into an arc shape.

16. The wind pattern control mechanism according to any one of claims 12-15, wherein, In the direction of extension of the first central axis, at least a portion of the protective ring is located between the airflow regulator and the duct regulator.

17. The wind pattern control mechanism according to claim 16, wherein, The air duct regulating component includes multiple blades arranged circumferentially along the first central axis, defining the airflow regulating cavity between the multiple blades, and each blade is provided with a pivot shaft, which is clamped between the airflow regulating component and the protective ring.

18. A fan head, wherein, include: The wind pattern control module according to any one of claims 1-17.

19. A fan, wherein, include: The fan head according to claim 18; or, comprising: A wind pattern control mechanism, wherein the wind pattern control mechanism is the wind pattern control mechanism according to any one of claims 1-17; A drive fan is located on the air inlet side of the airflow control mechanism.

20. The fan according to claim 19, wherein, Also includes: The housing, at least the drive fan is disposed within the housing, the front end face of the housing is open, and a portion of the protective ring extends to overlap and engage with the front end face of the housing.

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