CN219672917U - Fan blade structure, fan assembly and fan equipment - Google Patents

Abstract

The embodiment of the utility model provides a fan blade structure, a fan assembly and fan equipment, wherein the fan blade structure comprises: the hub comprises a windward end face and an air outlet end face which are opposite to each other; the notch part is arranged on the outer side wall of the hub and is close to the air outlet end face; the blades are arranged on the outer side wall of the hub along the circumferential direction of the hub. According to the technical scheme, the notch is formed in the outer side wall of the hub, and the part, close to the air outlet end face, of the hub cannot form a complete circle under the action of the notch, so that the possibility of sticking a die in the production process can be greatly reduced, the manufacturability of the fan blade structure in the production process is improved, and the production yield is improved.

Description

Fan blade structure, fan assembly and fan equipment

Technical Field

The utility model relates to the technical field of fan blades, in particular to a fan blade structure, a fan assembly and fan equipment.

Background

At present, most of the fan blades are produced in an injection molding mode, however, in the related art, for the production of large-size fan blades, shrinkage usually occurs at the end face part, deformation is caused, meanwhile, in the demolding process, the phenomenon of sticking to the mold is more easily generated, and the yield is lower.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

In view of this, an embodiment of the first aspect of the present utility model provides a fan blade structure.

Embodiments of the second aspect of the present utility model provide a fan assembly.

Embodiments of a third aspect of the present utility model provide a fan apparatus.

To achieve the above object, an embodiment of a first aspect of the present utility model provides a fan blade structure, including: the hub comprises a windward end face and an air outlet end face which are opposite to each other; the notch part is arranged on the outer side wall of the hub and is close to the air outlet end face; the blades are arranged on the outer side wall of the hub along the circumferential direction of the hub.

The wind blade structure mainly comprises a hub, blades and a notch part arranged on the hub, wherein the hub comprises two opposite end faces, namely a windward end face and a wind outlet end face, the windward end face and the wind outlet end face can be solid end faces or imaginary end faces, the windward end face and the wind outlet end face are positioned at two opposite ends of the hub, generally two axial ends and can be used for direction reference, and the blades can be driven to rotate together when the hub rotates through arranging a plurality of blades on the outer side wall of the hub, so that the air is driven. It is emphasized that the shape of the hub is improved, the notch is arranged on the outer side wall of the hub, and the part of the hub, which is close to the air outlet end face, cannot form a complete circle under the action of the notch, so that the possibility of sticking a die in the production process can be greatly reduced, the manufacturability of the fan blade structure in the production process is improved, and the production yield is improved.

It is to be added that, the breach portion sets up at wheel hub's air-out end for wheel hub holistic circumference is wave or cockscomb structure, and intermittent formation breach, air-out terminal surface and wheel hub's actual end surface are not coincide completely, and it is understood that the part that the recess was gone down exists certain distance with the air-out terminal surface, in order to improve manufacturability when processing, improves the yield.

Of course, it can be understood that the arrangement of the notch portion can reduce the total mass of the whole fan blade structure to a certain extent, and the design requirement of light weight is realized.

In addition, the notch part is only arranged at the part close to the air outlet end face, and the performance difference between the air inlet quantity and the air inlet efficiency and the traditional fan blade structure is small.

The shape of the notch part can be circular arc or rectangular.

In the above technical scheme, the hub specifically includes: the first drawing die groove is arranged at one end of the hub, which is close to the windward end face; the second drawing die groove is arranged at one end of the hub, which is close to the air outlet end face; wherein, the notch part is arranged on the groove wall of the second drawing groove.

In this technical scheme, wheel hub mainly includes two drawing die grooves that set up along the axial, specifically is first drawing die groove and second drawing die groove, and wherein, first drawing die groove is close to the setting of windward terminal surface, and the second drawing die groove is close to the setting of air-out terminal surface, through setting up breach portion on the cell wall of the second drawing die groove that is close to the air-out terminal surface, can guarantee the normal air inlet of windward terminal surface to under the condition of normal business turn over wind, reduce the possibility that the viscous mold appears in the production process, improve fan blade structure manufacturability in the production process, improve the production yield.

In the above technical solution, further includes: the connecting part is arranged at the bottom of the first drawing die groove and is used for connecting with the motor.

In the technical scheme, through setting up connecting portion in the tank bottom department of first drawing die groove, accessible connecting portion and motor realize being connected, when the motor is operated promptly, drive first drawing die groove and rotate, and then realize the rotation of fan blade structure.

Further, the connecting part is positioned at the rotation center of the first drawing die groove so as to maintain dynamic balance of the whole fan blade structure in the rotation process.

In the above technical scheme, the connecting portion specifically includes: a connecting hole for connecting the motor is formed in the connecting shaft part; the connecting wall surface is arranged at the bottom of the first drawing groove and is connected with the coupling part.

In this technical scheme, to connecting portion, including the hookup portion and outwards extend the connection wall, set up the connecting hole on the hookup portion, the drive shaft of motor can directly insert the connecting hole department to realize connecting, and through setting up the connection wall at the tank bottom of first drawing die groove, link to each other the connection wall with the shaft coupling, can improve the structural strength of whole fan blade structure.

The connecting hole can be a flat hole or a shaft with a groove, and the transmission connection can be realized only if the section is not purely circular.

In the technical scheme, the draft angle of the first draft slot is 1-4 degrees: and/or the draft angle of the second draft slot is 1-4 degrees.

In the technical scheme, the draft angles of the first draft groove and the second draft groove are limited, and no matter the first draft groove close to the windward end surface or the second draft groove close to the air outlet end surface in the hub is limited between 1 degree and 4 degrees, so that normal demoulding operation can be ensured.

In the technical scheme, one end of the blade extends to the windward end face, the other end of the blade extends to the air outlet end face, and the position of the notch part and the position of the blade extending to the air outlet end face are mutually avoided.

In this technical scheme, blade and breach all set up on wheel hub's lateral wall, can produce the position interference, so directly prescribe a limit to the position of breach in this scheme, specifically, the position of breach dodges the position department that the blade extends to the air-out terminal surface, guarantees normal joint strength and the hookup location of blade, realizes normal air-out efficiency, reduces the risk of shrink deformation on this basis.

In the technical scheme, on the axial section of the hub, the connecting wall surface is a plane; and/or the connecting wall surface is a transparent structure.

In the technical scheme, the specific shape of the connecting wall surface is limited, namely, the connecting wall surface is plane on the axial section of the hub, so that the processing is more convenient. In addition, the connecting wall surface can be used as a transparent structure, so that the user can more conveniently check the internal structure, and especially after the structures such as the net cover and the like wrapped outside the fan blade structure are matched and transparentized, the user can more conveniently check the structure.

In addition, the whole windward end face is limited to be in a complete ring shape, so that the air diversion effect is consistent with that of the traditional scheme in the rotation process, and the production and the processing are facilitated.

In the technical scheme, the ratio between the radius of the hub and the maximum radius of the blade relative to the rotating shaft of the hub is 0.65-0.85; and/or on the cross section of the hub, a first straight line passing through the furthest front edge of each blade in the circumferential direction and the axis and a second straight line passing through the furthest rear edge of each blade and the axis form a first angle, wherein the first angle is not less than 0.9x360 degrees/n, and n is the number of the blades; and/or on the longitudinal section of the first radius of the hub, the included angle between the connecting line between the front edge and the rear edge of the blade and the end face of the hub is 40-55 degrees, and the first radius is not smaller than the radius of the hub and not larger than the maximum radius of the blade.

In the technical scheme, the proportion relation between the radius of the hub and the radius of the blade is limited, specifically, the radius of the hub is 0.65-0.85 times of the radius of the blade, the radial dimension of the hub is larger than that of a single blade under the condition that the blade is arranged on the basis of the hub, the possibility of deformation caused by demolding adhesion is more easily generated, and the manufacturability of the notch part in the production process of the fan blade structure is more obviously improved.

In addition, the first angle and the uniformly distributed angle of the blades are limited, and the first angle is limited to be larger than or equal to 0.9 times of the uniformly distributed angle of the blades, namely, not smaller than 0.9x360 degrees/n, wherein n is the number of the blades, so that the chord ratio of the fan blade can be improved, the functional force of the blades is increased, the wind speed is improved, and the longer blowing distance is realized.

In addition, by limiting the installation angle of the hub, the function force and the air supply efficiency can be achieved, namely, the range of the installation angle e at the position of the radius Rn is 40-55 degrees, R1 is not less than Rn and not more than R2, R1 is the radius of the hub, and R2 is the radius of the blade, and it is understood that if the installation angle is too small, the working capability is poor, and if the installation angle is too large, the flow separation is easy to cause, and the efficiency is low.

Embodiments of the second aspect of the present utility model provide a fan assembly comprising: a motor; any of the fan blade structures of the first aspect is in driving connection with a drive shaft of the motor.

The fan blade assembly comprises a motor and a fan blade structure connected to the motor, wherein the motor is mainly used for driving the fan blade structure to rotate, so that driving air flows in from a windward end face and flows out from an air outlet end face.

The cooking device includes the fan blade structure, so that the cooking device has the beneficial effects of any of the fan blade structures in the embodiments of the first aspect, and will not be described herein.

An embodiment of a third aspect of the present utility model provides a fan apparatus, comprising: a housing; the fan assembly in the second aspect is disposed in the housing.

The fan equipment provided by the utility model comprises a shell and a fan assembly arranged in the shell, wherein the shell is mainly used for protecting the inner fan assembly.

Since the fan device includes the fan assembly, the fan assembly according to the second aspect of the present utility model has the advantages of the fan assembly according to the second aspect of the present utility model, and will not be described herein.

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

Drawings

Fig. 1 shows a schematic structural view of a fan blade structure according to an embodiment of the present utility model;

FIG. 2 shows a schematic structural view of a fan blade structure according to an embodiment of the present utility model;

FIG. 3 shows a schematic structural view of a fan blade structure according to an embodiment of the present utility model;

FIG. 4 shows a schematic structural view of a fan blade structure according to an embodiment of the present utility model;

FIG. 5 shows a schematic structural view of a longitudinal section at a first radius;

FIG. 6 illustrates a schematic structural view of a blower assembly according to an embodiment of the utility model;

fig. 7 shows a schematic structural view of a fan apparatus according to an embodiment of the present utility model.

The correspondence between the reference numerals and the component names in fig. 1 to 7 is:

100: a fan blade structure; 102: a hub; 1022: a windward end face; 1024: an air outlet end face; 1032: a first drawing cavity; 1034: a second drawing groove; 1036: a connection part; 1037: a shaft coupling portion; 1038: connecting the wall surfaces; 1039: a connection hole; 104: a notch portion; 106: a blade; b: a first angle; o1: a first straight line; o2: a second straight line; rn: a first radius; e: a mounting angle; a1: the draft angle of the second draft slot; a2: draft angle of the first draft slot; r1: hub radius; r2: blade radius; 200: a fan assembly; 202: a motor; 300: a fan device; 302: a housing.

Detailed Description

In order that the above-recited objects, features and advantages of embodiments of the present utility model can be more clearly understood, a further detailed description of embodiments of the present utility model will be rendered by reference to the appended drawings and detailed description thereof. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, embodiments of the utility model may be practiced otherwise than as described herein, and therefore the scope of the utility model is not limited to the specific embodiments disclosed below.

Some embodiments according to the present utility model are described below with reference to fig. 1 to 7.

As shown in fig. 1, the fan blade structure 100 provided in this embodiment mainly includes a hub 102, blades 106 and a notch 104 disposed on the hub 102, where the hub 102 includes two opposite end surfaces, i.e. a windward end surface 1022 and an air outlet end surface 1024, and the windward end surface 1022 and the air outlet end surface 1024 may be solid end surfaces or imaginary end surfaces, and the windward end surface 1022 and the air outlet end surface 1024 are located at opposite ends, generally axial ends, of the hub 102 and can be used as direction references. It should be emphasized that the shape of the hub 102 is improved, the notch 104 is arranged on the outer side wall of the hub 102, and the part of the hub 102 close to the air outlet end face 1024 cannot form a complete circle under the action of the notch 104, so that the possibility of sticking in the production process can be greatly reduced, the manufacturability of the fan blade structure 100 in the production process is improved, and the production yield is improved.

It should be added that the notch 104 is disposed at the air outlet end of the hub 102, so that the entire circumference of the hub 102 is wavy or serrated, and the notch is intermittently formed, and the air outlet end face 1024 does not completely coincide with the actual end surface of the hub 102, and it can be understood that a certain distance exists between the recessed portion and the air outlet end face 1024, so as to improve manufacturability and yield during processing.

Of course, it can be appreciated that the arrangement of the notch 104 can reduce the total mass of the entire fan blade structure 100 to some extent, thereby realizing the light design requirement.

In addition, the notch 104 is only disposed near the air outlet end face 1024, and the performance difference between the air inlet volume and the air inlet efficiency is small compared with the conventional fan blade structure 100.

The shape of the notch 104 may be circular arc or rectangular.

The notch 104 and the blade 106 are circumferentially spaced apart from each other about the rotational axis of the hub 102.

Further, the hub 102 mainly includes two drawing grooves disposed along an axial direction, specifically, a first drawing groove 1032 and a second drawing groove 1034, where the first drawing groove 1032 is disposed closer to the windward end face 1022, the second drawing groove 1034 is disposed closer to the air outlet end face 1024, and by disposing the notch 104 on a groove wall of the second drawing groove 1034 closer to the air outlet end face 1024, normal air intake of the windward end face 1022 can be ensured, so that under the condition of normal air intake and air outintake, the possibility of sticking in the production process is reduced, manufacturability of the fan blade structure 100 in the production process is improved, and production yield is improved.

In a specific embodiment, the connection portion 1036 is disposed at the bottom of the first mold drawing slot 1032, and the connection between the connection portion 1036 and the motor 202 is realized, that is, when the motor 202 operates, the first mold drawing slot 1032 is driven to rotate, so as to realize the rotation of the fan blade structure 100.

Further, the connection portion 1036 is located at the rotation center of the first mold drawing slot 1032 so as to maintain dynamic balance of the entire fan blade structure 100 during rotation.

In another specific embodiment, for the connection portion 1036, the connection portion 1036 includes a coupling portion 1037 and connection strips, the coupling portion 1037 is provided with a connection hole 1039, and the driving shaft of the motor 202 can be directly inserted into the connection hole 1039, so as to achieve connection, and by arranging a plurality of connection strips to connect between the coupling portion 1037 and the first drawing slot 1032, a hollow connection relationship can be achieved, so that air resistance of air at two sides of the first drawing slot 1032 and the second drawing slot 1034 in the circulation process can play a certain effect on air pressure balance.

And the connecting wall surface 1038 is arranged at the bottom of the first drawing die groove, so that the connecting wall surface is connected with the shaft coupling part, and the structural strength of the whole fan blade structure can be improved.

The connection hole 1039 may be a flat hole or a shaft with a groove, and the transmission connection can be realized only if the section is not purely circular.

Further, as shown in fig. 3, the draft angle a2 of the first draft slot 1032 is 1 ° to 4 °.

In another embodiment, the draft angle a1 of the second draft slot 1034 is 1 ° to 4 °.

In another embodiment, the draft angle a2 of the first draft slot 1032 is 1 to 4 and the draft angle a1 of the second draft slot 1034 is 1 to 4.

By defining the draft angles of the first and second draft slots 1032, 1034, normal stripping operation is ensured regardless of whether the first draft slot 1032 in the hub 102 is proximate to the windward end face 1022 or the second draft slot 1034 is proximate to the air out end face 1024.

Further, the blades 106 and the notch 104 are both arranged on the outer side wall of the hub 102, so that position interference is likely to occur, and therefore the position of the notch 104 is directly limited in the scheme, specifically, the position of the notch 104 avoids the position of the blade 106 extending to the air outlet end face 1024, normal connection strength and connection position of the blade 106 are ensured, normal air outlet efficiency is achieved, and risk of shrinkage deformation is reduced on the basis.

In a specific embodiment, the specific shape of the windward end surface 1022 is defined, that is, on the axial section of the hub 102, the windward end surface 1022 is planar, and the entire windward end surface 1022 is in a complete ring shape, so that the air guiding effect is consistent with that of the conventional scheme in the rotation process, and the production and processing are facilitated.

Further, the specific shape of the connecting wall surface is limited, namely, the connecting wall surface is plane on the axial section of the hub, so that the processing is facilitated. In addition, the connecting wall surface can be used as a transparent structure, so that the user can more conveniently check the internal structure, and particularly, after the structures such as the net cover and the like wrapped outside the fan blade structure are matched and transparentized, a perspective effect is formed, and the user can more conveniently check.

Further, as shown in fig. 2, the ratio between the radius of the hub 102 and the radius of the blade 106 is defined, specifically, the radius R2 of the hub 102 is 0.65-0.85 times the radius R1 of the blade 106, and when the blade 106 is disposed on the hub 102, the radial dimension of the hub 102 is larger than that of a single blade 106, so that the possibility of deformation caused by demolding adhesion is more likely to occur, and the manufacturability of the notch 104 in the production process of the fan blade structure 100 is more obviously improved.

In a specific embodiment, as shown in fig. 4, in the cross section of the hub, an angle between a first straight line o1 passing through the furthest front edge of each blade in the circumferential direction and the axis and a second straight line o2 passing through the furthest rear edge of each blade and the axis is a first angle b, where the first angle b is not less than 0.9x360 °/n, where n is the number of blades. The first angle b and the uniformly distributed angles of the blades are limited, and the first angle b is limited to be larger than or equal to 0.9 times of the uniformly distributed angles of the blades, namely not smaller than 0.9x360 degrees/n, wherein n is the number of the blades, so that the chord ratio of the blades can be improved, the functional force of the blades is increased, the wind speed is improved, and the longer blowing distance is realized.

In a specific embodiment, as shown in fig. 5, in a longitudinal section of the hub at a first radius Rn, the angle between the line between the leading edge and the trailing edge of the blade and the end face of the hub is 40 ° to 55 °, and the first radius Rn is not smaller than the radius of the hub and not larger than the maximum radius of the blade. By limiting the installation angle e of the hub, the function and the air supply efficiency can be achieved, namely, the range of the installation angle e at the position of the radius Rn is 40-55 degrees, R1 is not less than Rn and not more than R2, R1 is the radius of the hub, and R2 is the radius of the blade.

As shown in fig. 6, the present embodiment provides a fan blade assembly, which includes a motor 202 and a fan blade structure 100 connected to the motor 202, wherein the motor 202 is mainly used for driving the fan blade structure 100 to rotate, so that driving air flows in from a windward end surface 1022 and flows out from an air outlet end surface 1024.

Since the cooking apparatus includes the fan blade structure 100, the cooking apparatus has the beneficial effects of any of the fan blade structures 100 in the embodiment of the first aspect, and will not be described herein.

As shown in fig. 7, the present embodiment proposes a fan apparatus 300, which includes a housing 302 and a fan assembly 200 disposed in the housing 302, where the housing 302 is mainly used for protecting the fan assembly 200 inside.

Since the fan apparatus 300 includes the fan assembly 200, the beneficial effects of the fan assembly 200 in the above-described second embodiment are not described herein.

Wherein, the front side of casing is transparent material, more is convenient for user audio-visual to observe the inside fan blade structure of fan equipment to in time clear up the dust. The transparent part can be a large middle plane and can also be applied to a specific net cover structure.

In a specific embodiment, a fan blade is provided, mainly including a hub 102 and blades 106, where the annulus of the hub 102 includes a front end and a rear end (i.e. an air outlet end face 1024 and a windward end face 1022), each blade 106 includes a front edge and a tail edge, the front edge is connected to the windward end face 1022, the tail edge is connected to the air outlet end face 1024, the front end is in a non-complete annular structure, for each blade 106, the adjacent hub 102 end face needs to be reserved, and the notch portion 104 is in a circumferential array along the rotation axis.

According to the fan blade structure, the fan assembly and the fan equipment provided by the utility model, the notch part is arranged on the outer side wall of the hub, and the part of the hub, which is close to the air outlet end face, cannot form a complete circle under the action of the notch part, so that the possibility of sticking a die in the production process can be greatly reduced, the manufacturability of the fan blade structure in the production process is improved, and the production yield is improved.

In the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean 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 present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a fan blade structure which characterized in that includes:

the hub comprises a windward end face and an air outlet end face which are opposite to each other;

the notch part is arranged on the outer side wall of the hub and is close to the air outlet end face;

and the blades are arranged on the outer side wall of the hub along the circumferential direction of the hub.

2. The blade structure of claim 1, wherein the hub specifically comprises:

the first drawing die groove is arranged at one end of the hub, which is close to the windward end surface;

the second drawing die groove is arranged at one end of the hub, which is close to the air outlet end face;

the notch part is arranged on the groove wall of the second drawing groove.

3. The fan blade structure of claim 2, further comprising:

and the connecting part is arranged at the bottom of the first drawing die groove and is used for connecting with a motor.

4. A fan blade structure according to claim 3, wherein the connecting portion specifically includes:

a connecting hole for connecting the motor is formed in the connecting shaft part;

the connecting wall surface is arranged at the bottom of the first drawing die groove and is connected with the coupling part.

5. The fan blade structure according to claim 2, wherein,

the draft angle of the first draft slot is 1-4 degrees: and/or

The draft angle of the second draft slot is 1-4 degrees.

6. The fan blade structure according to any one of claims 1 to 5, wherein one end of the blade extends to the windward end face, the other end extends to the air outlet end face, and the position of the notch portion and the position of the blade extending to the air outlet end face are mutually avoided.

7. The fan blade structure according to claim 4, wherein the connecting wall surface is planar in an axial section of the hub; and/or

The connecting wall surface is of a transparent structure.

8. A fan blade structure according to any of claims 1 to 5, wherein the ratio between the radius of the hub and the maximum radius of the blade relative to the axis of rotation of the hub is 0.65-0.85; and/or

In the cross section of the hub, a first straight line formed by the furthest front edge of each blade in the circumferential direction and an axis and a second straight line formed by the furthest rear edge of each blade and the axis form a first angle, wherein the first angle is not less than 0.9x360 degrees/n, and n is the number of the blades; and/or

And on the longitudinal section of the first radius of the hub, the included angle between the connecting line between the front edge and the rear edge of the blade and the end surface of the hub is 40-55 degrees, and the first radius is not smaller than the radius of the hub and not larger than the maximum radius of the blade.

9. A fan assembly, comprising:

a motor;

a fan blade structure according to any of claims 1 to 8 in driving connection with a drive shaft of the motor.

10. A fan apparatus, comprising:

a housing;

the blower assembly of claim 9 disposed within the housing;

wherein, the front side of casing is transparent material.