CN220037061U - Adjusting plate, air duct and fan of fan - Google Patents

Abstract

The utility model discloses a regulating plate of a fan, an air duct and the fan, wherein the regulating plate of the fan comprises: the first end of the regulating plate is provided with a rotary connecting part, the rotary connecting part is suitable for being rotatably connected to the air duct cavity of the fan, the regulating plate is provided with an air guide curved surface, the air guide curved surface extends from the first end to the second end of the regulating plate, and the width of the second end of the regulating plate is larger than that of the first end of the regulating plate. According to the adjusting piece of the fan, the rotatable connecting part and the wind guide curved surface are arranged on the adjusting piece, so that the size of the air outlet flow channel is adjustable, the fan is enabled to have two modes of soft wind dispersion and convergence, various requirements of users are met, meanwhile, the reduction of wind flow and wind speed can be avoided, the energy consumption of the fan is reduced, the use feeling of the users is improved, the use effect is better, and the application range is wider.

Description

Adjusting plate, air duct and fan of fan

Technical Field

The utility model relates to the field of household appliances, in particular to a regulating plate of a fan, an air duct of the fan and the fan.

Background

Along with the improvement of the living standard of people, the requirements of people on the use feeling of products are gradually improved, and the fan is taken as a necessary electrical appliance in daily life, so that the diversification of the use of the fan is also a concern of people. Most of the existing fans change the wind type by additionally arranging guide vanes, so that the fans have modes of converging wind, dispersing wind gently and the like, but the mode can influence the wind speed of wind flow, reduce the wind speed, increase the energy consumption of the fans, and simultaneously, the use feeling of users is reduced, so that an improvement space exists.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present utility model is to provide a fan adjusting plate, which can reduce the energy consumption of the fan and improve the feeling of use of the user while ensuring the wind speed.

According to an embodiment of the utility model, a regulating plate of a fan comprises: the first end of the regulating plate is provided with a rotary connecting part, the rotary connecting part is suitable for being rotatably connected to the air duct cavity of the fan, the regulating plate is provided with an air guide curved surface, the air guide curved surface extends from the first end to the second end of the regulating plate, and the width of the second end of the regulating plate is larger than that of the first end of the regulating plate.

According to the adjusting piece of the fan, the rotatable connecting part and the wind guide curved surface are arranged on the adjusting piece, so that the size of the air outlet flow channel is adjustable, the fan is further enabled to have two modes of soft wind dispersion and convergence, various requirements of users are met, meanwhile, the reduction of wind flow and wind speed can be avoided, the energy consumption of the fan is reduced, the use feeling of the users is improved, the use effect is better, and the application range is wider.

According to some embodiments of the utility model, the blade has a center line extending through the first end and the second end, and the blade is symmetrically disposed on both sides with respect to the center line.

According to the adjusting sheet of the fan, two sides of the adjusting sheet are provided with the lap-joint bevel edges, and an included angle between the extending direction of the lap-joint bevel edges and the extending direction of the central line is between 4 degrees and 16 degrees.

According to the adjusting piece of the fan, the air guiding curved surface is configured to be a circular arc surface, and the axis of the air guiding curved surface is perpendicular to the rotation axis of the rotation connecting part.

According to the adjusting piece of the fan, an arc chamfer is formed at the joint of the end edge of the adjusting piece and the side edge of the adjusting piece.

According to the adjusting piece of the fan, the rotating connecting part is configured as a connecting seat, the connecting seat is provided with a connecting hole, and the connecting seat is suitable for being connected to the air duct cavity of the fan in a rotating mode through a connecting shaft penetrating through the connecting hole.

According to some embodiments of the utility model, the width of the adjusting piece is arranged to increase linearly from the first end to the second end.

The utility model also provides an air duct of the fan.

The air duct of the fan according to the embodiment of the utility model comprises an air duct support and the adjusting piece of the fan according to any one of the embodiments, wherein the rotating connecting part is rotatably connected with the air duct support, and the adjusting pieces are multiple and are sequentially distributed in the circumferential direction of the air duct support to define an air outlet flow passage communicated with the air duct cavity.

According to the air duct of the fan, the air guide curved surface of the adjusting piece is an arc-shaped surface, the radius of the air guide curved surface at the first end of the adjusting piece is smaller than the radius of the air duct support, and the radius of the air guide curved surface at the second end of the adjusting piece is larger than the radius of the air duct support.

The utility model also provides a fan.

According to the fan of the embodiment of the utility model, the air duct of the fan of any one of the above embodiments is provided.

The air duct of the fan, the fan and the adjusting piece of the fan have the same advantages compared with the prior art, and are not described in detail herein.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a structure of a regulator blade according to an embodiment of the present utility model;

FIG. 2 is a second schematic structural view of a regulator blade according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a third embodiment of a regulator blade;

FIG. 4 is a schematic structural view of a regulating plate according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a fan duct according to an embodiment of the present utility model;

FIG. 6 is a schematic illustration of the installation of a tab according to an embodiment of the utility model;

FIG. 7 is a second schematic view of the installation of a regulator blade according to an embodiment of the present utility model;

FIG. 8 is a schematic diagram of a wind path converging wind pattern of a fan according to an embodiment of the present utility model;

FIG. 9 is a cross-sectional view of a duct aggregate wind pattern of a fan according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a fan duct soft wind mode according to an embodiment of the present utility model;

fig. 11 is a cross-sectional view of a duct soft wind mode of a fan according to an embodiment of the present utility model.

Reference numerals:

the air duct 1 of the fan,

the adjusting piece 11, the air outlet channel 111, the rotating connecting part 113, the connecting hole 1131, the air guiding curved surface 114, the first end 115 of the adjusting piece, the second end 116 of the adjusting piece, the arc chamfer 117,

air duct support 12, air duct cavity 121.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The following describes a regulating blade 11 of a fan according to an embodiment of the present utility model with reference to fig. 1 to 11, which reduces fan power consumption while securing wind speed and improves a user's feeling of use.

The fan comprises a shell, a motor, fan blades, an air duct and other structures, wherein the shell defines an installation space, the motor and other parts are installed in the installation space, namely, the shell can be used for providing an installation carrier for the motor and other parts, and the outer wall of the shell can provide protection for the fan blades, the motor and other structures and can prevent external sundries from entering the fan. The motor is fixed in the shell, and the motor links to each other with the fan blade in order to drive the fan blade rotation and produce the windage, is formed with the windage passageway in the shell, and the fan blade is located the windage passageway for the air current in the wind channel circulation can concentrate outward under the effect of fan blade and discharge, avoids the windage to scatter, plays the effect of gathering. The air duct is arranged on the shell of the fan and is provided with an air duct cavity, the air duct cavity is communicated with the air flow channel, the regulating piece 11 is arranged at the air duct cavity 121 of the air duct, and the regulating pieces 11 are jointly arranged at the air duct cavity 121 to jointly define an air outlet flow channel, so that air flow at the air duct cavity 121 can flow outwards under the guiding action of the regulating piece 11 at the air outlet flow channel.

The following describes, with reference to fig. 1 to 11, a regulating blade 11 of a fan according to an embodiment of the present utility model, including: the first end 115 of the adjusting plate is provided with a rotary connecting portion 113, the rotary connecting portion 113 is suitable for being rotatably connected to the air duct cavity 121 of the fan, the adjusting plate 11 is formed with an air guiding curved surface 114, the air guiding curved surface 114 extends from the first end 115 to the second end of the adjusting plate, and the width of the second end 116 of the adjusting plate is larger than that of the first end 115 of the adjusting plate.

Therefore, when the plurality of adjusting plates 11 are connected to the air duct cavity 121, the plurality of adjusting plates 11 together define the air outlet flow channel 111, and the adjusting plates 11 are rotatably connected to the air duct cavity 121 of the fan through the rotating connection part 113, so that the air outlet discharged to the outside of the fan through the air outlet flow channel 111 can form soft scattered air or converged air.

Specifically, the adjusting plate 11 is set to a structure with a larger width at one end and a smaller width at the other end, namely, the first end 115 of the adjusting plate 11 is provided with a rotating connecting portion 113, the air duct cavity 121 of the air duct 1 of the fan is provided with a connecting structure matched with the rotating connecting portion 113, the adjusting plate 11 can be connected with the air duct cavity 121 through the rotating connecting portion 113, the second end 116 of the adjusting plate 11 is a free end, meanwhile, the adjusting plate 11 is provided with an air guiding curved surface 114, the air guiding curved surface 114 is arranged along the direction from the first end 115 to the second end of the adjusting plate, and the air guiding curved surface 114 is arranged towards the air duct cavity 121.

The adjusting piece 11 is rotatably connected to the air duct cavity 121 of the fan through a rotation connection portion 113 provided at the first end 115 of the adjusting piece, an included angle between the adjusting piece 11 and the axis of the fan is an adjusting angle, the adjusting piece 11 can rotate towards the air duct cavity 121, the adjusting angle is a negative angle and can also rotate away from the air duct cavity 121, the adjusting angle is a positive angle, in this embodiment, the adjusting angle can be set to be between-30 ° and 40 °, when the adjusting angle is a negative angle, a radial dimension of an air outlet flow channel 111 defined by the adjusting piece 11 from the first end 115 of the adjusting piece to the second end 116 of the adjusting piece gradually decreases, and when the adjusting angle is a positive angle, a radial dimension of an air outlet flow channel 111 defined by the adjusting piece 11 from the first end 115 of the adjusting piece to the second end 116 of the adjusting piece gradually increases.

Further, the motor drives the fan blade to rotate, so that wind flow is formed in the shell, the wind flow is conveyed along the axial direction of the fan through the air duct formed by the shell, one end of the adjusting plate 11, which is close to the air duct cavity 121, is connected with the air duct cavity 121 through the rotating connecting part 113, so that the wind flow reaches the adjusting plate 11 through the air duct cavity 121, meanwhile, the adjusting plate 11 is provided with the wind guiding curved surface 114, the wind guiding curved surface 114 extends towards the second end 116 of the adjusting plate along the first end 115 of the adjusting plate, and the wind flow is conveyed in the wind outlet flow channel 111 defined by the adjusting plate 11 along the wind guiding curved surface 114 from the air duct cavity 121, and then conveyed outside the fan.

As shown in fig. 8 to 9, when the fan is set in the wind converging mode, the adjusting angle of the adjusting piece 11 is a negative angle, the radial dimension of the air outlet channel 111 defined by the adjusting piece from the first end 115 of the adjusting piece to the second section of the adjusting piece 11 is gradually reduced, after the air flow is conveyed to the air outlet channel 111 through the air duct cavity 121, the radial dimension of the air outlet channel 111 is gradually reduced along with the gradual reduction of the radial dimension of the air outlet channel 111, and then the air outlet forms the converged wind when the air outlet is output from the air outlet channel 111 through the air guiding curved surface 114.

As shown in fig. 10 to 11, when the fan is set in the soft wind-dispersing mode, the adjusting angle of the adjusting piece 11 is a positive angle, the radial dimension of the air outlet channel 111 defined by the adjusting piece from the first end 115 of the adjusting piece to the second section of the adjusting piece 11 is gradually increased, after the air flow is conveyed to the air outlet channel 111 through the air channel cavity 121, the radial dimension of the air outlet is gradually increased along with the gradual increase of the radial dimension of the air outlet channel 111, and then the air outlet forms soft wind-dispersing when the air outlet is output from the air outlet channel 111 through the air guiding curved surface 114.

According to the adjusting piece 11 of the fan provided by the embodiment of the utility model, the size of the air outlet flow channel 111 is adjustable by arranging the rotatable connecting part and the air guide curved surface 114 on the adjusting piece 11, so that the fan has two modes of soft air dispersion and convergence air, various requirements of users are met, the reduction of the wind speed of the air flow can be avoided, and compared with the design that the air guide structure is arranged in the air outlet air channel in the prior art, the situation that the air guide structure generates larger resistance to the air flow is avoided, the energy consumption of the fan is reduced, the use feeling of the user is improved, the use effect is better, the design cost is lower, and the application range is wider.

In some embodiments, as shown in fig. 2, the tab 11 has a centerline extending through the first and second ends, with both sides of the tab 11 being symmetrically disposed about the centerline.

Specifically, the fan blade of the fan forms vortex type wind flow through rotation, the vortex type wind flow not only has axial velocity, but also has circumferential velocity, and then the vortex type wind flow can produce an acting force along the axial direction of the fan towards the outside of the air duct cavity 121, and also can produce an acting force along the radial direction of the fan towards the outside of the air duct cavity 121, when the air outlet enters the air outlet flow passage 111 from the air duct cavity 121, the radial acting force of the air outlet can act on the air outlet flow passage 111, namely, the radial acting force of the air outlet can act on the regulating plate 11, the regulating plate 11 is arranged to be symmetrical relative to the central line, the same radial acting force of the air outlet received by the two sides of the regulating plate 11 can be ensured, the conditions that the regulating plate 11 deforms due to uneven stress and the like are avoided, and the uniformity of the air outlet is ensured.

In some embodiments, the two sides of the adjusting piece 11 are formed with overlapping oblique sides, and the included angle between the extending direction of the overlapping oblique sides and the extending direction of the central line is between 4 ° and 16 °.

Specifically, as shown in fig. 5, when the adjusting plate 11 is mounted on the air duct cavity 121, the adjusting plate 11 overlaps with the adjusting plates 11 on the left and right sides thereof, and the overlapping portion of the two adjusting plates 11 gradually increases along the width from the first end 115 of the adjusting plate to the second end 116 of the adjusting plate because the overlapping oblique sides are formed on the two sides of the adjusting plate 11 and the included angle between the extending direction of the overlapping oblique sides and the extending direction of the center line is between 4 ° and 16 °.

Further, when the fan is set in the converging wind mode, the adjusting angle of the adjusting plate 11 is a negative angle, the area of the overlapping portion of the two adjusting plates 11 is increased, when the fan is set in the soft wind mode, the adjusting angle of the adjusting plate 11 is a positive angle, the area of the overlapping portion of the two adjusting plates 11 is reduced, it should be noted that the area of the overlapping portion accounts for 10% to 30% of the area of the adjusting plate 11, the width from the first end 115 of the adjusting plate to the second end 116 of the adjusting plate of the overlapping portion of the two adjusting plates 11 is gradually increased, so that the adjusting plates 11 can be kept in contact with the adjusting plates 11 at both sides in the converging wind mode and the soft wind mode, the air outlet flow channel 111 is complete, the air outlet loss is avoided, and the wind flow is reduced.

In some embodiments, as shown in fig. 1-7, the wind-guiding curved surface 114 is configured as a circular arc surface, and the axis of the wind-guiding curved surface 114 is perpendicular to the rotation axis of the rotation connection portion 113.

Specifically, the wind guiding curved surface 114 is set to extend from the first end 115 of the adjusting plate to the second end 116 of the adjusting plate, and the wind guiding curved surface 114 is configured to be a circular arc surface, so that the circular arc surface is set to extend from the first end 115 of the adjusting plate to the second end 116 of the adjusting plate, after wind flow is conveyed from the air duct cavity 121 to the first end 115 of the adjusting plate, the wind flow is conveyed along the wind guiding curved surface 114 towards the second end 116 of the adjusting plate, and the wind guiding curved surface 114 is set to be a circular arc surface, so that when the wind flow is conveyed by the wind guiding curved surface 114, the angle of the wind flow in the axial direction is gradually changed, the wind resistance of the adjusting plate 11 to the wind flow can be reduced, and the problems of wind speed reduction, energy loss and the like caused by the limitation of the adjusting plate 11 are avoided.

Meanwhile, the axis of the wind-guiding curved surface 114 is perpendicular to the rotation axis of the rotation connecting part 113, that is, when the adjustment angle of each adjusting piece 11 is changed, the displacement of the two parts of the axis of the wind-guiding curved surface 114 is the same, so that the effect of each part of the wind-guiding curved surface 114 on wind flow is the same, and the wind outlet is more uniform.

In some embodiments, as shown in fig. 1-4, the connection of the end edges of the tab 11 to the side edges of the tab 11 is formed with an arcuate chamfer 117.

Specifically, the regulating plate 11 is disposed at the air duct cavity 121, and there is an overlapping portion between two adjacent regulating plates 11, an arc chamfer 117 is formed at the boundary of the overlapping portion at the connection between the end edge of the regulating plate 11 and the side edge of the regulating plate 11, when the fan changes the air outlet mode, the regulating plate 11 needs to change its regulating angle, and then the overlapping portion can change accordingly, the connection between the end edge of the regulating plate 11 and the side edge of the regulating plate 11 is set as the arc chamfer 117, so that the adjacent regulating plate 11 is prevented from being damaged by the regulating plate 11 when the regulating angle is regulated, and meanwhile, the arc chamfer 117 can improve the structural strength of the connection between the end edge of the regulating plate 11 and the side edge of the regulating plate 11, so as to avoid the breakage of the connection between the end edge of the regulating plate 11 and the side edge of the regulating plate 11, and prolong the service life of the regulating plate 11.

In some embodiments, as shown in fig. 1-4, the rotating connection portion 113 is disposed at the first end 115 of the adjusting piece, the adjusting piece 11 is connected with the air duct cavity 121 through the rotating connection portion 113, and the rotating connection portion 113 is configured as a connection seat, that is, the adjusting piece 11 is connected with the air duct cavity 121 through the connection seat, the connection seat is provided with a connection hole 1131, and is suitable for being rotatably connected to the air duct cavity 121 of the fan through a connection shaft penetrating through the connection hole 1131, the connection manner enables the adjusting piece 11 to change an adjusting angle through the connection shaft, further changes the radial dimension of the air outlet flow channel 111, realizes the conversion of the fan in the converging air mode and the soft air dispersing mode, improves the user experience, and simultaneously, connects the connection seat with the air duct cavity 121 through the connection shaft, that is, connects the adjusting piece 11 with the air duct cavity 121 through the connection shaft, so that the adjusting piece 11 can be detached relative to the air duct bracket 12, thereby facilitating the maintenance of the fan, and saving the maintenance time.

In some embodiments, as shown in fig. 2, the width of the adjusting plate 11 is set to linearly increase from the first end to the second end, which makes the increase of the size of the adjusting plate 11 more stable, and the air outlet is a vortex air flow, so that the air outlet has a circumferential speed, so that the air outlet can generate an acting force along the radial direction of the fan towards the outside of the air channel cavity 121, when the air outlet enters the air outlet flow channel 111 from the air channel cavity 121, the radial acting force of the air outlet can act on the air outlet flow channel 111, that is, the radial acting force of the air outlet can act on the adjusting plate 11, and the width of the adjusting plate 11 is set to linearly increase from the first end to the second end, so that the increase of the size of the adjusting plate 11 is more stable, the structural strength of the adjusting plate 11 is higher, and the service life of the adjusting plate 11 is prolonged.

The utility model also provides an air duct 1 of the fan.

The air duct 1 of the fan according to the embodiment of the present utility model includes an air duct support 12 and the adjusting plate 11 of the fan according to any one of the above embodiments, the rotation connection portion 113 is rotatably connected to the air duct support 12, the adjusting plate 11 is plural and sequentially distributed in the circumferential direction of the air duct support 12 to define an air outlet flow passage 111 communicating with the air duct cavity 121, and in this embodiment, the adjusting plate 11 may be provided in 8-12 pieces.

Specifically, as shown in fig. 5, the plurality of adjusting plates 11 are sequentially distributed in the circumferential direction of the air duct support 12 to define an air outlet flow channel 111 communicated with the air duct cavity 121, and after the air flow is conveyed from the air duct cavity 121 to the air outlet flow channel 111, the air flow is conveyed to the outside through the air guide curved surface 114 of the adjusting plate 11, and the radial dimensions of the air outlet flow channel 111 along the direction from the first end 115 of the adjusting plate to the second end of the adjusting plate 11 are different due to different adjusting angles, so that the radial dimensions of the air outlet flow are also different, and the air outlet range is controlled.

Further, the adjusting piece 11 is rotatably connected with the air duct cavity 121 of the air duct bracket 12 through the rotating connecting portion 113, so that the adjusting piece 11 has an adjusting angle, an included angle between the adjusting piece 11 and the axis of the fan is an adjusting angle, the adjusting angle when the adjusting piece 11 rotates in the air duct cavity 121 is a negative angle, the adjusting angle when the adjusting piece 11 rotates outside the air duct cavity 121 is a positive angle, the air outlet ranges of different air outlet channels 111 of the adjusting angle are different, when the adjusting angle is a negative angle, the fan is in a converging air mode, and when the adjusting angle is a positive angle, the fan is in a flexible air dispersing mode so as to meet different requirements.

According to the air duct 1 of the fan provided by the embodiment of the utility model, the air duct 1 of the fan is provided with the plurality of adjusting sheets 11, and the size of the air outlet flow channel 111 is adjustable by arranging the rotatable connecting part and the air guiding curved surface 114 on the adjusting sheets 11, so that the fan has two modes of soft air dispersion and convergence air, various requirements of users are met, the wind flow and the wind speed can be prevented from being reduced, the energy consumption of the fan is reduced, the use feeling of the users is improved, the use effect is better, and the application range is wider.

In some embodiments, as shown in fig. 10, the wind guiding curved surface 114 of the adjusting plate 11 is a circular arc surface, the radius of the wind guiding curved surface 114 at the first end 115 of the adjusting plate is smaller than the radius of the air duct support 12, and the radius of the wind guiding curved surface 114 at the second end 116 of the adjusting plate is larger than the radius of the air duct support 12.

Specifically, the wind guiding curved surface 114 is set to be a circular arc surface, so that when the wind guiding curved surface 114 conveys wind flow, the angle of the wind flow in the axial direction is gradually changed, and further the wind resistance of the regulating plate 11 to the wind flow can be reduced, and the problems of wind speed reduction, energy loss and the like caused by the limitation of the regulating plate 11 due to the wind flow are avoided.

Meanwhile, the first ends 115 of the adjusting plates are connected with the air duct cavity 121 of the air duct support 12, the plurality of adjusting plates 11 define an air outlet channel 111, when the radius of the air guide curved surface 114 at the first ends 115 of the adjusting plates is smaller than that of the air duct support 12, the radial dimension of the air outlet channel 111 defined by the connecting parts of the plurality of adjusting plates 11 and the air duct cavity 121 is not larger than that of the air duct support 12, the tightness of the air outlet channel 111 at the first ends 115 of the adjusting plates is ensured, the air quantity of the air flow when entering the air outlet channel 111 is prevented from being reduced, and when the radius of the air guide curved surface 114 at the second ends 116 of the adjusting plates is larger than that of the air duct support 12, and the positive angle of the adjusting plates 11 reaches the maximum value, the adjacent two adjusting plates 11 still have overlapped parts, so that the tightness of the air outlet channel 111 at the second ends 116 of the adjusting plates is ensured, and the air quantity of the air flow when the air outlet channel 111 is output.

The utility model also provides a fan.

According to the fan of the embodiment of the utility model, the air duct 1 of the fan is provided.

According to the fan provided with the air duct 1 of the fan, the rotatable connecting part and the air guide curved surface 114 are arranged on the adjusting piece 11 of the air duct 1 of the fan, so that the size of the air outlet flow channel 111 is adjustable, the fan is further provided with two modes of soft air dispersion and convergence, various requirements of users are met, meanwhile, the wind flow and the wind speed can be prevented from being reduced, the energy consumption of the fan is reduced, the use feeling of the users is improved, the use effect is better, and the application range is wider.

1. In the description of the present utility model, 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", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

2. In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

3. In the description of the present utility model, "plurality" means two or more.

4. In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

5. In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A fan blade comprising: the first end of the regulating plate is provided with a rotary connecting part, the rotary connecting part is suitable for being rotatably connected to the air duct cavity of the fan, the regulating plate is provided with an air guide curved surface, the air guide curved surface extends from the first end to the second end of the regulating plate, and the width of the second end of the regulating plate is larger than that of the first end of the regulating plate.

2. The blade of claim 1, wherein the blade has a centerline extending through the first and second ends, the blade being symmetrically disposed about the centerline on both sides.

3. The fan adjusting piece according to claim 2, wherein overlapping oblique sides are formed on both sides of the adjusting piece, and an angle between an extending direction of the overlapping oblique sides and an extending direction of the center line is between 4 ° and 16 °.

4. The blade of claim 1, wherein the curved wind-guiding surface is configured as a circular arc surface, and an axis of the curved wind-guiding surface is perpendicular to a rotation axis of the rotation connection portion.

5. The blade of claim 1, wherein the blade has an arcuate chamfer formed at the junction of the end edge and the side edge of the blade.

6. The fan blade of claim 1, wherein the rotational connection is configured as a connection socket having a connection hole, the connection socket being adapted to be rotatably connected to the air duct chamber of the fan by a connection shaft passing through the connection hole.

7. The fan blade of claim 1, wherein the blade has a width that increases linearly from the first end to the second end.

8. An air duct of a fan, comprising an air duct support and the adjusting piece of the fan according to any one of claims 1-7, wherein the rotating connection part is rotatably connected with the air duct support, and the adjusting pieces are multiple and are sequentially distributed in the circumferential direction of the air duct support to define an air outlet flow passage communicated with the air duct cavity.

9. The air duct of the fan of claim 8, wherein the air guiding curved surface of the adjusting piece is a circular arc surface, a radius of the air guiding curved surface at a first end of the adjusting piece is smaller than a radius of the air duct support, and a radius of the air guiding curved surface at a second end of the adjusting piece is larger than a radius of the air duct support.

10. A fan provided with a duct according to any one of claims 8-9.