TWM447429U - Fan blade reinforcing structure - Google Patents

Description

Fan blade reinforcement structure

The present invention provides a reinforced structure of a fan blade, in particular, a rib having a reinforcing rib on the blade to reduce the vibration of the blade while the fan is running.

As shown in FIG. 1 , the fan blade group of the conventional fan has a connecting portion 11 assembled with a motor (not shown), and a plurality of blades 12 are disposed on the connecting portion 11 , wherein Since the performance of the fan 10 is improved, when the wind 10 is manufactured, the thickness of the blade 12 is made thinner as much as possible, and the weight of the entire fan 10 is reduced, whereby the operation of the motor is made more efficient.

When the fan 10 is in operation, the airflow pushed by the fan 10 also exerts a reaction force on the blade 12. Under the action of the reaction force, the blade 12 of the fan 10 vibrates in the axial direction, and the vibration emits noise in addition to noise. Moreover, the airflows driven by the blades 12 interfere with each other, causing turbulence and causing the performance of the fan 10 to be ineffective; since the vibration of the blades 12 is more pronounced when the weight of the blades 12 is lighter, the fan manufacturer avoids the generation of the blades 12. When vibrating, most of the blade 12 will be thickened to increase its weight to reduce vibration.

It is worth noting that the thickening of the blade 12 can avoid the vibration of the blade 12, but the weight increase has the effect that the motor of the fan has to bear a larger load and the power consumption is also greatly increased. Therefore, how to solve the above problem, It is a big problem for the current fan industry.

In view of this, the creator has conceived and studied more deeply, and has been working on the accumulated experience of the industry, through continuous trial and modification, finally created a fan blade reinforcement structure.

The present invention provides a fan blade reinforcement structure, the main purpose of which is to increase the strength of the fan blade without affecting the fan performance, thereby reducing the vibration of the blade when the fan is running.

In order to achieve the above objective, the present invention provides a fan blade structure, comprising: a fan body, wherein the plurality of blades are disposed on a motor connecting portion, the blade has an air surface, an air inlet surface, all wind edges, and a wind separation. When the fan is operated, the airflow flows from the air inlet surface to the air outlet surface, and the blade is displaced and rotated by the air separation edge toward the wind cutting edge; a first reinforcing rib is a strip structure. Formed on the air inlet surface and located at the periphery of the wind cutting edge, the first reinforcing rib and the air inlet surface sandwich a first angle; and a second reinforcing rib is a strip structure formed on the air inlet The surface is located at the periphery of the wind edge, and the second reinforcing rib and the air inlet surface are sandwiched by a second angle.

By adding the first reinforcing rib and the second reinforcing rib to the air inlet surface of the blade, the strength of the blade in the axial direction of the fan is enhanced, and the stability of the blade can be maintained even if the thickness of the blade is reduced and the weight is reduced, thereby effectively avoiding blade Vibration when the fan is running.

The techniques, means, and other effects of the present invention in order to achieve the above objects are set forth in the accompanying drawings.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [detailed description of the drawings] as follows: The preferred implementation of the fan blade structure of this creation, for example, Figure 2 As shown in FIG. 5, the fan body 2 includes a first reinforcing rib 3 and a second reinforcing rib 4, wherein the fan body 2 is assembled from a plurality of blades 21 at a slightly inclined angle to a motor connecting portion. 22, and the blade 21 is a curved structure, which may also be a planar structure. The blade 21 has an air outlet surface 211, an air inlet surface 212, all wind edges 213, and a wind edge 214 for the fan. When the body 2 is in operation, the airflow is flowed from the air inlet surface 212 to the air outlet surface 211, and the blade 21 is displaced by the windward edge 214 toward the wind cutting edge 213; the first reinforcing rib 3 is a strip a structure, located on the air inlet surface 212 And forming a first angle θ1 between the first reinforcing rib 3 and the air inlet surface 212, and a first connecting end 31 of the first reinforcing rib 3 The other end is a first immersing end 32, the first connecting end 31 is connected to the outer edge of the motor connecting portion 22, and the first immersing end 32 is tapered to enter the air inlet surface 212 of the blade 21; And the second reinforcing rib 4 is a strip-shaped structure, is located on the air inlet surface 212, and is formed to protrude along the periphery of the windward side 214, and the second reinforcing rib 4 and the air inlet surface 212 are sandwiched The second angle θ 2 is a second connection end 41 at one end, and the second end 41 is connected to the outer edge of the motor connection portion 22, and the second connection end 41 is connected to the outer edge of the motor connection portion 22 The second inlet end 42 tapers to enter the air inlet surface 212 of the blade 21, and the length of the first reinforcing rib 3 is longer than the length of the second reinforcing rib 4.

The above is the main components of the creation embodiment and its configuration description.

As for the manner of use and function of the present embodiment, please refer to FIG. 3, which is a rear view of the present invention. In particular, the first reinforcing rib 3 and the second reinforcing rib 4 are disposed on the blade. The back surface of the 21, that is, the air inlet surface 212, thereby preventing the airflow from being blown out by the fan body 2, and the first reinforcing rib 3 is tapered with the first recessed end 32 to be immersed in the blade 21 The windward surface 212, and the second reinforcing rib 4 is tapered with the second immersed end 42 and immersed in the air inlet surface 212 of the blade 21 to achieve a hydrodynamic design, thereby increasing the strength of the blade 21 While not causing turbulence in the airflow, the strength of the blade 21 in the axial direction of the fan body 2 is enhanced, that is, By reducing the thickness of the blade 21 and reducing the weight, the stability of the blade 21 can be maintained, and the vibration of the blade 21 when the fan body 2 is operated can be effectively avoided.

In addition, please refer to FIG. 4 and FIG. 5 , which is a cross-sectional view of the present invention, wherein the first reinforcing rib 3 is disposed on the wind cutting edge 213 of the blade 21 , and the second reinforcing rib 4 is The windward side 214 of the blade 21 is disposed on both sides of the blade 21, and the first reinforcing rib 3 and the second reinforcing rib 4 respectively form a first angle θ with the air inlet surface 212 1 and a second angle θ 2 , so that the creation can achieve the purpose of improving the strength of the blade 21 with the simplest structure, effectively reducing the thickness and weight of the blade 21, improving the efficiency of the exhaust, and reducing the raw material cost of the fan body 2. .

It is known from the above that this creation is indeed in line with "industry availability", "novelty" and "progressiveness". It proposes a new type of patent application according to law, and prays for review and early grant of patents.

"Knowledge Technology"

10‧‧‧fan

11‧‧‧Connecting Department

12‧‧‧ leaves

"This Creation"

2‧‧‧fan body

21‧‧‧ leaves

211‧‧‧Out of the wind

212‧‧‧ into the wind

213‧‧‧ cut the wind side

214‧‧‧ away from the wind

22‧‧‧Motor Connection

3‧‧‧First rib

31‧‧‧First connection

32‧‧‧First no entry

4‧‧‧Second reinforcing ribs

41‧‧‧second connection

42‧‧‧Second no entry

θ 1‧‧‧ first angle

θ 2‧‧‧second angle

Figure 1 is a perspective view of a conventional fan blade group.

Fig. 2 is a perspective external view of the present embodiment.

Figure 3 is a rear view of the present creative embodiment.

Figure 4 is a cross-sectional view of the creation cut along the direction of Figure 4-4 of Figure 3.

Figure 5 is a partial cross-sectional view of the present embodiment.

2‧‧‧fan body

21‧‧‧ leaves

212‧‧‧ into the wind

213‧‧‧ cut the wind side

214‧‧‧ away from the wind

22‧‧‧Motor Connection

3‧‧‧First rib

31‧‧‧First connection

32‧‧‧First no entry

4‧‧‧Second reinforcing ribs

41‧‧‧second connection

42‧‧‧Second no entry

Claims (8)

A fan blade reinforcement structure comprises: a fan body, wherein the plurality of blades are disposed on a motor connecting portion, the blade has an air outlet surface, an air inlet surface, all wind edges and a wind edge, so that the fan is running The airflow flows from the air inlet surface to the air outlet surface, and the blade is displaced and rotated by the windward side to the wind cutting edge; a first reinforcing rib is a strip structure formed on the air inlet surface And located at a periphery of the wind cutting edge, the first reinforcing rib and the air inlet surface sandwich a first angle; and a second reinforcing rib is a strip structure formed on the air inlet surface and located at the distance At the periphery of the wind edge, the second reinforcing rib and the air inlet surface sandwich a second angle. The fan blade reinforcing structure according to claim 1, wherein the length of the first reinforcing rib is longer than the length of the second reinforcing rib. The fan blade reinforcing structure according to claim 1, wherein the first reinforcing rib is formed to protrude along a circumference of the wind cutting edge. The fan blade reinforcing structure according to claim 1, wherein the second reinforcing rib is formed to protrude along a circumference of the windward side. The fan blade reinforcing structure according to claim 1, wherein the first reinforcing rib is connected to an outer edge of the motor connecting portion by a first connecting end. Fan blade reinforcement knot as described in claim 1 The second reinforcing rib is connected to the outer edge of the motor connecting portion by a second connecting end. The fan blade reinforcing structure according to claim 1, wherein the first reinforcing rib is tapered at a first immersion end and is immersed in an air inlet surface of the blade. The fan blade reinforcing structure according to claim 1, wherein the second reinforcing rib is tapered at a second immersion end and is immersed in the air inlet surface of the blade.