TWM631466U - Bidirectional fan blade structure - Google Patents

Abstract

A bidirectional fan blade structure includes a hub, a plurality of blades surround the hub symmetrically, a front deflector and a rear deflector. Each blade extends in the shaft direction and has an inlet end and an outlet end. The inlet end has an inlet end angle and the outlet end has an outlet end angle. The front deflector is disposed on an overhang of the inlet end and has a front deflector angle, and the rear deflector is disposed on an overhang of the outlet end and has a rear deflector angle. Wherein a junction of the blades and the rear deflector defines a rear deflector outer diameter and a junction of the blades and the front deflector defines a front deflector inner diameter, and the rear deflector outer diameter is smaller than the front deflector inner diameter.

Description

Double steering fan blade structure

This case is about a double-steering fan blade structure, especially a double-steering fan blade structure that can increase the axial air outlet.

Please refer to FIGS. 1A-1B. FIG. 1A shows a schematic diagram of a motor-driven integrated machine and a conventional fan disposed at one end thereof, and FIG. 1B shows a schematic diagram of the conventional fan in FIG. 1A. As shown in Figs. 1A-1B, a plurality of cooling fins 121 and a fan 13 mounted on the rotating shaft 14 are provided on one side of the motor-driven integrated machine 1 composed of the motor 11 and the driver 12. When the motor-driven integrated machine is 1. During operation, the fan 13 can generate airflow due to the rotation of the rotating shaft 14, so as to enhance the heat dissipation effect of the heat dissipation fins 121. However, according to the structure of the fan 13 , after entering the fan 13 , the airflow is mostly discharged in the centrifugal direction along the structure of the blades 131 (as shown by the arrow in the figure) and accumulates on the radial side edge of the fan 13 , and it is difficult to reach the fan 13 . The heat dissipation fins 121 axially connected at the rear lead to poor heat dissipation effect; in addition, since the fan 13 is wrapped in the air hood 15 of the motor-driven integrated machine 1, the air entering the air hood 15 is likely to be in contact with the air hood 15. (as shown by the dotted line in the figure) the backflow is generated, which affects the operation efficiency of the fan 13 and also affects the heat dissipation effect.

Therefore, it is necessary to develop a new type of double-steering fan blade structure to solve the above-mentioned problems in the prior art.

The purpose of this case is to provide a double-steering fan blade structure, which can achieve the effect of increasing the axial air outlet and improving the heat dissipation capacity through the structural design.

Another object of the present application is to provide a double-steering fan blade structure, which can optimize the airflow direction and improve the operation efficiency of the fan blade structure through the design of the blade shape and the arrangement of the front deflector and the rear deflector.

In order to achieve the above purpose, the present application provides a double-steering fan blade structure, which includes a hub, a plurality of blades symmetrically arranged around the hub, a front deflector, and a rear deflector. The hub is connected with an external rotating shaft, and the rotating shaft defines an axial direction; each blade is extended in the axial direction and includes an air inlet end and an air outlet end; the air inlet end protrudes toward a front end of the incoming airflow, and It includes a first protruding edge, which is connected to the hub and has an included angle of the air inlet end with a radial plane on the hub that is perpendicular to the axial direction, and a second protruding edge, which connects an outer edge of the blade with the the first protruding edge; the air outlet end protrudes toward a rear end of the outflow airflow, and includes a third protruding edge connected to the hub, and a fourth protruding edge connecting the outer edge and the third protruding edge, and There is an included angle between the air outlet end and the third protruding edge. The front deflector is disposed and connected to the plurality of second protruding edges, and there is a front deflector included angle between each of the second protruding edges and the corresponding first protruding edge, and the rear deflector is disposed and connected to the plurality of third protruding edges, and there is a rear deflector included angle between each of the third protruding edges and the radial plane, wherein the plurality of fourth protruding edges and one of the rear deflectors The intersection of the outer edges defines a diameter of the outer edge of the rear deflector, the intersection of the plurality of first protruding edges and an inner edge of the front deflector defines an inner edge diameter of the front deflector, and the rear deflector The outer diameter is smaller than the inner diameter of the front deflector.

In one embodiment, one end of the first protruding edge is connected to the hub, and the other end extends toward the front end and is axially and radially away from the hub, so as to define the included angle of the air inlet end with the hub.

In one embodiment, one end of the third protruding edge is connected to the wheel hub, and the other end extends toward the rear end and is axially and radially away from the wheel hub to define an included angle of the rear deflector with the wheel hub.

In one embodiment, the front deflector is a hollow annular disk-shaped structure.

In one embodiment, the rear deflector is a hollow annular disk-shaped structure.

In one embodiment, the plurality of vanes, the front deflector, and the rear deflector are integrally formed.

In one embodiment, the angle range of the included angle of the air inlet end is 100-150 degrees.

In one embodiment, the angle range of the included angle of the front deflector is 70-120 degrees.

In one embodiment, the angle range of the included angle of the rear deflector is 100-150 degrees.

In one embodiment, the angle range of the included angle of the air outlet end is 70-120 degrees.

1: Motor drive all-in-one machine

11: Motor

12: Drive

121: cooling fins

13: Fan

131: Blade

14: Spindle

15: Windshield

2: Double steering fan blade structure

21: Wheels

211: Front side

212: rear side

22: Blades

221: Inlet end

2211: First protruding edge

2212: Second protruding edge

222: Air outlet

2221: Third protruding edge

2222: Fourth protruding edge

223: Outer Rim

23: Front spoiler

231: inner edge

232: Junction

24: Rear spoiler

241: Outer Rim

242: Junction

A: The included angle of the air inlet

B: Angle of front deflector

C: The included angle of the rear deflector

D: the angle of the air outlet

d1: diameter of the outer edge of the rear deflector

d2: Diameter of inner edge of front deflector

△d: distance difference

T: box

A-A’: hatch line

FIG. 1A shows a schematic diagram of a motor-driven integrated machine and a conventional fan disposed at one end thereof.

FIG. 1B shows a schematic diagram of the conventional fan in FIG. 1A.

FIG. 2A shows a schematic diagram of the structure of the double-steering fan blades of the embodiment of the present application.

Fig. 2B shows a cross-sectional view of the plane A-A' in Fig. 2A.

Fig. 2C shows a schematic diagram of the structure of the hub and the blade as indicated by the box T in Fig. 2B.

FIG. 3A shows a top view of the double-steering fan blade structure of the embodiment of the present case from the direction of air intake.

Figure 3B shows a side view of the double-steering fan blade structure of the embodiment of the present invention.

FIG. 4 shows a schematic diagram of the airflow direction when the double-steering fan blade structure of the embodiment of the present invention operates.

Some typical embodiments embodying the features and advantages of the present case will be described in detail in the description of the latter paragraph. It should be understood that this creation can have various changes in different aspects, but none of them depart from the scope of this creation, and the descriptions and illustrations therein are essentially used for illustration rather than limitation. This creation.

Please refer to Fig. 2A-2C, Fig. 3A-3B, and Fig. 4, Fig. 2A shows a schematic diagram of the double-steering fan blade structure of the embodiment of this case, and Fig. 2B shows a cross-section of the AA' plane in Fig. 2A Fig. 2C shows a schematic diagram of the detailed structure of the hub and the blade indicated by the box T in Fig. 2B, Fig. 3A shows the top view of the double-steering fan blade structure of the embodiment of the present case from the air inlet direction, and Fig. 3B shows the embodiment of the present case. Figure 4 is a side view of the double-steering fan blade structure, and Figure 4 shows a schematic diagram of the airflow direction when the double-steering fan blade structure of the embodiment of the present case is operating. The dual-steering fan blade structure 2 of the present case includes a hub 21, a plurality of blades 22, a front deflector 23, and a rear deflector 24, wherein the hub 21 is connected to an external rotating shaft (not shown), for example, As shown in Fig. 1A, the motor drives the rotating shaft 14 of the integrated machine 1, and the rotating shaft provides the power to rotate. Therefore, the double-steering fan blade structure 2 in this case has a rotating central axis (that is, the rotating shaft). In addition, the plurality of The blades 22 are arranged symmetrically around the outer periphery of the hub 21 (please refer to FIG. 3A at the same time), that is, the blades 22 are symmetrically arranged around the central axis of rotation, so that the double-steering fan The blade structure 2 has no rotation direction restriction, the rotation direction can be changed according to the rotating shaft, and can drive airflow regardless of forward rotation or reverse rotation, maintaining the same fan performance.

In this case, the direction substantially parallel to the central axis of rotation of the dual-steering blade structure 2 is defined as the axial direction, and the directions perpendicular to the axial direction and passing through the central axis of rotation are defined as the radial direction A plane perpendicular to the rotation center axis is defined as a radial plane, that is, the radial plane is perpendicular to the axial direction, or the normal to the radial plane is parallel to the axial direction. It should be noted that a plurality of radial planes can be taken along the axial direction, so that these radial planes intersect with the hub 21, the blades 22, the front deflector 23, and the rear deflector 24 to define a plurality of included angles. described later.

As shown by the arrow in Fig. 4, when the double-steering fan blade structure 2 is rotating, the air flow is introduced into the double-steering fan blade structure 2 from the right side of the figure, and then exported to the left side of the figure, so it is further defined in this case. As shown in Figure 4, the right side (air inlet side) is the front end of the double-steering fan blade structure 2, and the left side (air outlet side) as shown in Figure 4 is the rear end of the double-steering fan blade structure 2, In other words, the front end of the double-steering fan blade structure 2 is the end where the airflow is introduced, and the rear end of the double-steering fan blade structure 2 is the end where the airflow is exported. Accordingly, the side of the hub 21 facing the front end is defined as the front side 211, and the side facing the rear end is defined as the rear side 212 (as shown in Figure 2B).

Next, please continue to refer to Figures 2A-2C and Figures 3A-3B. In addition to being symmetrically arranged along the radial direction of the hub 21 , each blade 22 also extends along the axial direction of the hub 21 and has a shape change, wherein each blade 22 includes a An air inlet end 221 and an air outlet end 222, the air inlet end 221 protrudes toward the front end of the double-steering fan blade structure 2 where the airflow is introduced, and the air outlet end 222 protrudes toward the rear end of the double-steering fan blade structure 2 where the airflow is exported , that is, the protruding directions of the air inlet end 221 and the air outlet end 222 are opposite.

The inlet end 221 includes a first protruding edge 2211 and a second protruding edge 2212 . One end of the first protruding edge 2211 is connected to the hub 21 , and the other end extends from the front side 211 of the hub 21 toward the front end of the dual-steering fan blade structure 2 , and is axially and radially away from the hub 21 . ,and There is an included angle A between its extending direction and the front side 211 of the hub 21 , in other words, the first protruding edge 2211 has an included angle A with a radial plane on the hub 21 that is perpendicular to the axial direction, and due to the included angle A It is the included angle between the blade 22 and the air inlet end 221 , so it is defined as the included angle A of the air inlet end.

In addition, the second protruding edge 2212 extends from the extending end of the first protruding edge 2211 in a direction radially away from the hub 21 and axially toward the rear end of the double-steering fan blade structure 2 , and is radially away from the blade 22 . An upward outer edge 223 intersects to connect the first protruding edge 2211 and the outer edge 223. Therefore, there is an included angle B between the first protruding edge 2211 and the second protruding edge 2212. The edge 223 refers to the outermost edge of the blade 22 in the radial direction. As shown in Figures 2A and 2B, the front deflector 23 is disposed and connected to the plurality of second protruding edges 2212 of the plurality of blades 22, so that the front deflector 23 and each of the The included angle B also exists between the first protruding edges 2211 , so the included angle B is defined as the included angle B of the front deflector.

Compared with the blades 131 of the conventional fan 13 shown in FIG. 1B , each blade 22 of the present case is provided with the protruding inlet end at the portion facing the front end (ie, the inlet side) of the double-steering fan blade structure 2 . 221, and thus form the air inlet end angle A with the front side 211 of the hub 21, and the formation of the air inlet end 221 and the air inlet end angle A can not only increase the air inlet area, air volume, etc., but also Helps to control the direction of the airflow flowing into the double-steering fan blade structure 2; in addition, compared with the conventional fan 13, the double-steering fan blade structure 2 of the present case further adds the front deflector 23, and forms the leading The included angle B of the flow plate, according to this, the airflow entering the hood of the motor-driven integrated machine 1 will be guided by the front deflector 23 to effectively reduce the phenomenon of backflow at the entrance.

Furthermore, the air outlet 222 includes a third protruding edge 2221 and a fourth protruding edge 2222 . One end of the third protruding edge 2221 is connected to the hub 21 , and the other end is directed from the rear side 212 of the hub 21 toward the rear end of the dual-steering fan blade structure 2 , and is both axially and radially away from the hub 21 . extend extending, and there is an included angle C between its extending direction and the rear side 212 of the hub 21, in other words, the third protruding edge 2221 has an included angle C with a radial plane of the hub 21 perpendicular to the axial direction; As shown in Figures 2A and 2B, the rear deflector 24 is disposed and connected to the plurality of third protruding edges 2221 of the plurality of blades 22, so the rear deflector 24 and the hub 21 The included angle C also exists between the rear sides 212 , so the included angle C is defined as the included angle C of the rear air deflector.

In addition, the fourth protruding edge 2222 extends from the extending end of the third protruding edge 2221 in a direction radially away from the hub 21 and axially toward the front end of the double-steering fan blade structure 2 , and is connected with the edge of the blade 22 . The outer edges 223 intersect to connect the third protruding edge 2221 and the outer edge 223 . Therefore, there is an included angle D between the third protruding edge 2221 and the fourth protruding edge 2222 , and the included angle D is the blade 22 Because of the included angle of the air outlet end 222 , the included angle D is defined as the included angle D of the air outlet end.

Compared with the blade 131 of the conventional fan 13 shown in FIG. 1B , each blade 22 of the present application further adds the fourth protrusion to the portion facing the rear end (ie, the outlet side) of the double-steering fan blade structure 2 . edge 2222, and thus form the included angle D of the air outlet, and through the formed angle D of the air outlet to match the rear deflector 24 and the included angle C of the rear deflector, it is possible to control the dual The direction of the airflow discharged from the steering fan blade structure 2, so that a larger proportion of the airflow is blown into the cooling fins arranged at the rear end of the fan blade structure in the axial direction, and a smaller proportion of the airflow flows in the radial direction, so that it is connected to the double-steering fan blade structure. The heat dissipation fins or motor device (not shown) at the rear end of 2 can achieve better heat dissipation effect, and at the same time further prevent the possible return of the air out, and also make the overall airflow flow more smoothly, and the operation of the fan more efficient.

Furthermore, in order to further increase the air flow rate blown into the heat dissipation fins disposed at the rear end of the double-turning fan blade structure 2, that is, to increase the axial air outlet, as shown in Figs. 3A-3B, the plurality of blades 22 The intersection 242 of the plurality of fourth protruding edges 2222 and an outer edge 241 of the rear deflector 24 A diameter d1 of the outer edge of the rear deflector is defined to be smaller than a leading edge defined by the intersection 232 of the plurality of first protruding edges 2211 of the plurality of blades 22 and an inner edge 231 of the front deflector 23 The diameter d2 of the inner edge of the baffle, more specifically, the projected diameter of the outer edge 241 of the rear baffle 24 on a radial plane perpendicular to the axial direction is d1, and the inner diameter of the front baffle 23 The projected diameter of the edge 231 on a radial plane perpendicular to the axial direction is d2, wherein d1 is smaller than d2, and there are two distance differences Δd between d1 and d2. Through this distance difference, when the airflow enters from the front end of the double-steering fan blade structure 2, it is guided by the air inlet ends 221 of the plurality of blades 22 and the front deflector 23 and goes toward the double-steering fan blade structure 2 When the rear end is discharged, the airflow directed to the axial direction can be effectively increased, thereby increasing the air volume reaching the heat dissipation fins; With the design that the diameter d1 of the outer edge of the rear deflector is smaller than the diameter d2 of the inner edge of the front deflector, the airflow entering the double-steering fan blade structure 2 can have more axial air outlet, effectively improving the heat dissipation effect.

When implementing the double-steering fan blade structure 2, the above-mentioned included angles can be changed according to actual needs, for example, according to the needs of changing the air inlet volume, the air inlet angle, the air outlet volume, the air outlet angle, the axial air outlet volume, etc. make adjustments. For example, the implementable angle range of the included angle A of the air inlet end is 100-150 degrees, the implementable angle range of the included angle B of the front air deflector is 70-120 degrees, and the implementable angle of the included angle C of the rear air deflector The range is 100-150 degrees, and the implementable angle range of the included angle D of the air outlet is 70-120 degrees. According to this, the most suitable results for the actual use can be obtained through the mutual cooperation of various angles, for example, larger air inlet volume, more axial air outlet volume, better heat dissipation effect, etc., which has the advantage of flexible change. .

In addition, the front deflector 23 is disposed on the plurality of second protruding edges 2212 of the plurality of blades 22, so preferably the front deflector 23 is formed into a hollow annular disk-shaped structure, and is connected with the plurality of blades 22. The plurality of blades 22 are integrally formed; it is also preferred that the plurality of first blades disposed on the plurality of blades 22 The rear deflector 24 on the three protruding edges 2221 can be formed into a hollow annular disk-shaped structure and integrally formed with the plurality of vanes 22; further, the plurality of vanes 22, the front deflector 23, and the The rear deflector 24 can be integrally formed, so the most suitable method can be adopted according to the actual production process without limitation. In addition, the number of the blades 22 can also be changed according to the actual use requirements, as long as the arrangement is symmetrical with the hub 21 as the center, and the double steering operation is ensured, which is also not limited.

To sum up, the double-steering fan blade structure in this case is by setting the air inlet end and the air outlet end on the blade, forming the included angle of the air inlet end and the air outlet end, and then setting the front deflector and the rear deflector together. And form the included angle of the front deflector and the included angle of the rear deflector, which can comprehensively obtain various effects such as increasing the axial air outlet and suppressing the backflow at the inlet and outlet through the cooperation of the angles between the angles, thereby achieving the integration of the motor drive. The optimized heat dissipation design of the machine.

It should be noted that the above-mentioned preferred embodiments are only proposed to illustrate the present case, and the present case is not limited to the described embodiments, and the scope of the present case is determined by the scope of the appended patent application. And this case can be modified by Shi Jiangsi, a person who is familiar with this technology, but none of them can be protected as attached to the scope of the patent application.

2: Double steering fan blade structure

21: Wheels

22: Blades

23: Front spoiler

231: inner edge

232: Junction

24: Rear spoiler

241: Outer Rim

242: Junction

A-A’: hatch line

Claims (10)

A double-steering fan blade structure, comprising: a hub connected to an external shaft defining an axial direction; a plurality of blades symmetrically arranged around the hub, wherein each of the blades is attached to the axial extension and includes: an air inlet end, protruding toward a front end of the incoming air flow, and comprising: a first protruding edge, connected to the hub, and having an included angle of an air inlet end with a radial plane on the hub that is perpendicular to the axial direction; and a second protruding edge connecting an outer edge of the blade and the first protruding edge; and An air outlet end protrudes toward a rear end of the outgoing airflow, and includes: a third protruding edge connected to the hub; and a fourth protruding edge, connecting the outer edge and the third protruding edge, and having an air outlet angle with the third protruding edge; a front deflector disposed and connected to the plurality of second protruding edges, and each of the second protruding edges and the corresponding first protruding edge has a front deflector included angle; and A rear deflector is disposed and connected to the plurality of third protruding edges, and each third protruding edge has a rear deflector angle between the third protruding edge and the radial plane, Wherein the intersection of the plurality of fourth protruding edges and an outer edge of the rear deflector defines a diameter of the outer edge of the rear deflector, and the intersection of the plurality of first protruding edges and an inner edge of the front deflector A diameter of the inner edge of the front deflector is defined at the position, and the diameter of the outer edge of the rear deflector is smaller than the diameter of the inner edge of the front deflector. The double-steering fan blade structure as claimed in claim 1, wherein one end of the first protruding edge is connected to the wheel hub, and the other end extends toward the front end and is axially and radially away from the wheel hub to define the wheel hub The angle of the inlet end. The double-steering fan blade structure as claimed in claim 1, wherein one end of the third protruding edge is connected to the wheel hub, and the other end extends toward the rear end and is axially and radially away from the wheel hub, so as to be connected with the wheel hub. Defines this rear deflector angle. The double-steering fan blade structure as claimed in claim 1, wherein the front deflector is a hollow annular disk-shaped structure. The double-steering fan blade structure as claimed in claim 1, wherein the rear deflector is a hollow annular disk-shaped structure. The double-steering fan blade structure as claimed in claim 1, wherein the plurality of blades, the front deflector, and the rear deflector are integrally formed. The double-steering fan blade structure according to claim 1, wherein the angle range of the included angle of the air inlet end is 100-150 degrees. The double-steering fan blade structure according to claim 1, wherein the angle range of the included angle of the front deflector is 70-120 degrees. The double-steering fan blade structure according to claim 1, wherein the angle range of the included angle of the rear deflector is 100-150 degrees. The double-steering fan blade structure according to claim 1, wherein the angle range of the included angle of the air outlet end is 70-120 degrees.

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