CN201963600U - Axial Fan Blades - Google Patents

Abstract

The utility model discloses an axial flow fan blade, which is provided with a supporting rod, wherein one end of the supporting rod is a fixed end, the other end of the supporting rod is connected with a fan blade, the fan blade is a trapezoidal plate-shaped body, the surface of the fan blade is provided with a curved surface, and the curved surface is in a twisted wave shape; the fan blade is characterized in that the two opposite sides of the fan blade are respectively provided with a first edge and a second edge, the first edge and the second edge are in a curve shape, the thickness of the fan blade close to the first edge is narrower, and the thickness of the fan blade close to the second edge is wider; the other end of the fan blade connected with the supporting rod is a side edge, and the side edge is in a flat cutting shape; the supporting rod, the fixed end and the fan blades are integrally formed, the integrally formed structure, the side edge which is in a flat cutting shape, the curved surface which is in a wave shape and the first edge and the second edge which are different in thickness can enable the fan blade structure to be firmer and more stable, the fan blades can fully generate larger air quantity due to turbulent flow, and the fan blades are more power-saving and have smaller rotating noise.

Description

Axial Fan Blades

technical field

The utility model relates to a fan blade, in particular to a fan blade applied to an axial flow fan, and the fan blade has a curved surface and other special structures.

Background technique

Fans can be found everywhere from large cooling towers, tunnel ventilation fans, household fans, range hood fans, and microcomputer cooling fans. The large fans generally used for exhaust ventilation of buildings can be roughly divided into two types: centrifugal type and axial flow type. Centrifugal fans can generate high wind pressure and are suitable for installation in places with high ventilation resistance, such as buildings with ventilation ducts, or places where thick layers of grain are dried. The other is an axial flow fan, also called a partial fan, which is commonly used in industrial and mining enterprises. Its structure is roughly that a driving motor connects its drive shaft to the rotating shaft, and a considerable number of fans are arranged around the rotating shaft. Blades, driving motors and fan blades are arranged in a wind cover, which is used for local ventilation, easy to install, and has obvious ventilation effect. Compared with ordinary centrifugal fans, axial flow fans can generate larger air volume.

However, the design of the blades of the axial flow fan still stays on the early imitation and modeling, and the improvement of the performance is very limited; most of the axial flow fans in the prior art are a simple flat plate. The rotating shafts are arranged around with regular inclination angles to generate disturbances with the air, thereby generating wind force. However, the axial flow fans in the prior art will generate disturbing noise when rotating, and at the same time, due to the poor structure of the fan blades, resulting in Due to the huge wind resistance, the power of the fan rotation is reduced, and the driving motor becomes very power-hungry. Although the air volume generated is larger than that of a general centrifugal fan, it is still not ideal.

Utility model content

The main purpose of this utility model is to provide an improved blade structure of an axial flow fan to improve the noise, power consumption and air volume caused by the poor blade structure of the axial flow fan in the prior art Insufficiency and other issues.

In order to achieve the above purpose, the specific technical means of the utility model is: a rod, one end of the rod is a fixed end, and the fixed end is a circular buckle structure; the other end of the rod is connected to a fan blade, the fan blade is roughly It is a trapezoidal plate-shaped body, and its surface has a curved surface, which is twisted and wavy, so that the fan blade has an oblique and curved shape as a whole; the opposite sides of the fan blade have a first edge and a second edge respectively, and the fan blade is close to the The thickness at the first edge is narrower and thinner, and the thickness near the second edge is wider and thicker. The first edge and the second edge are curved, so that the fan blade as a whole tends to a streamlined fin shape; the other end connected to the fan blade and the pole It is one side, and the side is in the shape of a flat cut; the support rod, the fixed end and the fan blade are integrally formed.

With the above-mentioned technical means, the effect that the utility model can achieve is embodied in that: the side of the fan blade is cut flat, which can be close to the inner edge of the windshield of the axial flow fan and tends to be close to the shape, and the fan blade There is only a slight gap between the side of the blade and the inner edge of the windshield, so that when the axial flow fan is running, the rotation range of the fan blade can cover the entire inner edge of the windshield, so that the fan blade The gas passing through the windshield can be fully vortexed without any leakage, and a more abundant and stable air volume can be generated, and the inhaled air volume is also larger, so that the efficiency of air conditioning can be brought into full play; in addition, the fan blade of the utility model The wavy curved surface on the top can push and guide the passing airflow when the axial fan is running, so that the airflow passed by the fan blades can be fully exhausted from the axial fan without flowing to the fan again. Subsequent rotation of the fan blades can not only greatly reduce the noise of operation, but also prevent the wind resistance of the fan blades from increasing due to the increase in speed, so that the axial flow fan runs more smoothly and saves power, and at the same time can increase the exhaust. Air volume.

Since the fan blade is roughly in the shape of a trapezoidal plate, the center of gravity of the fan blade will be closer to the rotating shaft. In this way, when the axial flow fan is running, the center of gravity is biased towards the rotating shaft. Power consumption is less.

Description of drawings

FIG. 1 is a three-dimensional appearance view of an axial flow fan blade of the present invention.

Fig. 2 is a front view of the axial flow fan blade of the present invention.

Fig. 3 is a rear view of the axial flow fan blade of the present invention.

Fig. 4 is a left view of the axial flow fan blade of the present invention.

Fig. 5 is a right view of the axial flow fan blade of the present invention.

Fig. 6 is a top view of the axial flow fan blade of the present invention.

Fig. 7 is a bottom view of the axial flow fan blade of the present invention.

Fig. 8 is an implementation state diagram of the axial flow fan blade of the present invention.

Detailed ways

Hereby, with regard to the structure and composition of the axial flow fan blade of the present invention, and the effects that can be produced, in conjunction with the drawings, a preferred embodiment of the case is described in detail as follows:

Referring to Figures 1 to 7, the axial flow fan blade of the present invention has a rod 1, one end of the rod 1 is a fixed end 10, and the fixed end 10 is a circular buckle structure; the rod The other end of 1 is connected to a fan blade 11, the fan blade 11 is generally a trapezoidal plate-shaped body, and its surface has a curved surface 110, and the curved surface 110 is twisted and wavy, so that the fan blade 11 has an oblique and curved shape as a whole; the fan blade 11 The opposite sides have a first edge 111 and a second edge 112 respectively, the first edge 111 and the second edge 112 are curved, so that the fan blade 11 as a whole tends to a streamlined fin shape; the fan blade 11 and the strut 1 The other end of the connection is a side edge 113, and the side edge 113 is truncated, and the width of the side edge 113 is smaller than the end connecting the pole 1, and the thickness of the fan blade 11 is from the first edge 111 to the second edge 112 gradually becomes thicker (the overall cross-sectional shape of the fan blade 11 can be seen from the side 113). The support rod 1, the fixed end 10 and the fan blade 11 are integrally formed, and its integrally formed structure is suitable for mass production, with low cost, omitting tedious assembly steps in the manufacturing process, and integrally formed without seams, the structure is strong and durable Durable, stable and shock-resistant, not easy to twist and deform.

Referring to Fig. 8, when the fixed end 10 of the pole 1 of the utility model is arranged around the rotating shaft 90 of the axial flow fan 9 in an equidistant regular arrangement, and the driving motor 91 of the axial flow fan 9 drives Rotating shaft 90, while driving the fan blade 11 of the present utility model, because the thickness of the first edge 111 of the fan blade 11 is thinner than the second edge 112, so when the fan blade 11 passes through the air, there will be a cutting edge similar to a blade. effect, the wind resistance suffered by the fan blade 11 will be less, so whether the axial flow fan 9 is just started or in operation, it can greatly save power (through testing, it is different from the axial flow fan in the prior art In comparison, about 25% of electricity can be saved).

The side edge 113 of the fan blade 11 is a cut flat shape, which can be close to the inner edge of the wind cover 92 of the axial fan 9 and tends to be close to the shape. The side edge 113 of the fan blade 11 and the inner edge of the wind cover 92 Only a slight gap is reserved between them, so that when the axial flow fan 9 is in operation, the rotation range of the fan blade 11 can cover the entire inner edge range in the wind cover 92, so that the fan blade 11 can be fully swirled through the wind. The gas in the cover 92 does not leak at all, and can produce more abundant and stable air volume, and the air volume inhaled is also larger when passing through, so that the efficiency of air conditioning can be brought into play to the extreme.

In addition, the curved surface of the fan blade 11 of the present invention is wavy, which can push and guide the passing airflow when the axial flow fan 9 is running, so that the airflow passed by the fan blade 11 can be fully discharged axially. In addition to the flow fan 9, it will not flow to the fan blades that are subsequently rotated, so that not only the exhaust air volume can be increased, but also the wind resistance of the fan blades 11 will not increase due to the increased speed, so that the axial flow fan 9 The operation is smoother and saves power, and the noise of operation is also greatly reduced!

Although the present invention is described by the foregoing embodiments, its shape and details can still be changed without departing from the spirit of the present invention, and can be understood by those skilled in the art. The aforementioned preferred embodiment of the utility model is only one of the ways in which the principle of the utility model can be implemented, but it is not limited thereto, and should be defined by the appended claims.

Claims (2)

1. an axial fan blade is characterized in that, this axial fan blade has a pole, and an end of this pole has a fixed end; The other end of this pole connects a flabellum, and this flabellum is a trapezoidal tabular body, and its surface has curved surface, and this curved surface is the wavy of distortion, and this flabellum integral body has the form of oblique bending; The relative both sides of this flabellum have one first edge and one second edge respectively, this first edge and this curved shape in second edge; The other end that this flabellum is connected with this pole is a side, and this side is the truncation shape, and the width of this side is less than an end that connects this pole, the thickness of this flabellum from this first edge toward second edge thickening gradually; Described pole, fixed end and flabellum are formed in one.

2. axial fan blade according to claim 1 is characterized in that, described flabellum integral body levels off to the streamline fin-shaped.

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