Noise reduction fan blade

Abstract

A noise reduction fan blade comprises a fan blade body and a mounting base, the fan blade body is arranged at the top of the mounting base, a boss is arranged at the end, away from the mounting base, of the fan blade body, and a sawtooth part is arranged on one side edge of the fan blade body; according to the noise reduction fan blade, the sawtooth-shaped structure is arranged on one side of the fan blade, the evenly-arranged pits are formed in the fan blade, and the sawtooth-shaped edge of the blade is used for simulating a feather laminated layer of a wing of an owl, so that the noise reduction effect is achieved; and the reinforcing ribs arranged on the back surfaces of the blades can effectively prevent the blades from deforming, so that the service life of the blades is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan field especially relates to a noise reduction fan blade. BACKGROUND

[0002] Fans are needed in the fields of industrial production, wind power generation and the like, but the airflow generated by the existing fan is large when it is running fast, so the noise is also large, and therefore a fan blade that can make the airflow speed uniform when running and achieve a noise reduction effect is needed to meet the demand.

[0003] A water pump motor noise reduction fan blade is disclosed in Chinese Patent No. CN118622756A, which comprises a fan blade group, a protective shell, a connecting shell, and a limiting ring. The fan blade group is installed inside the protective shell and located at the same center. The outwardly extending protective shell limits the uniform speed of the internal space trajectory movement of the limited gas, and the arc-shaped head is a half-enclosed structure that prevents excess gas on the outside from entering the inside to form turbulent flow and cause noise. The overall gas can be uniformly output with a trajectory without forming turbulent flow to produce noise, thereby achieving the effect of noise reduction. However, the existing technology still has the following defects: the existing noise reduction fan blade structure has limitations and a small range of application. Therefore, a fan blade with a wide range of use and good noise reduction effect is needed to meet the demand. SUMMARY

[0004] The technical problem to be solved by the utility model is to solve the problem of loud fan noise in the prior art. The utility model provides a noise reduction fan blade.

[0005] The technical solution adopted by the utility model to solve the technical problem is: a noise reduction fan blade, comprising a fan blade body and a mounting base, the fan blade body is arranged on the top of the mounting base, one end of the fan blade body away from the mounting base is provided with a boss, and one side edge of the fan blade body is a sawtooth part.

[0006] Further, one side of the fan blade body is provided with at least two groups of arranged circular concaves, the blade sawtooth is similar to the wing of an owl, the regular concaves on the front surface of the fan blade are similar to the layers of feathers of the wing, and the effect of noise reduction is achieved by imitating the wing of an owl.

[0007] Further, the diameter of the concave is 3-6mm, and the spacing between each group of concaves is 10-15mm; preferably, the diameter of the concave is 4.4mm, and the spacing between each group of concaves is 13mm.

[0008] Further, the other side of the fan blade body is provided with one group and more than one group of reinforcing ribs, and the reinforcing ribs can effectively prevent the deformation of the fan blade.

[0009] Further, the height of the boss gradually increases along the fan blade body, and the height of the highest part is 11mm.

[0010] Further, the fan blade body is arc-shaped, and an included angle between the fan blade body and a horizontal plane is gradually changed so as to generate uniform air flow speed.

[0011] Further, the included angle between the fan blade body and the horizontal plane ranges from 25 to 45 degrees.

[0012] Further, the sawtooth part is a gradually changed sawtooth structure, which can effectively reduce turbulence generated by air separation from the fan blade, reduce noise and improve wind pressure.

[0013] The utility model discloses the beneficial effect:

[0014] The utility model discloses a noise reduction fan blade, set up the sawtooth structure on one side of fan blade, and be equipped with the evenly arranged pit on the fan blade, be used to simulate the feather layer of the wing of the owl, to reach the effect of reducing noise, and be equipped with the reinforcing rib on the back of the blade can effectively prevent the deformation of the fan blade, increase its service life. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further illustrated below in connection with the drawings and examples.

[0016] Fig. 1 It is the perspective view of the noise reduction fan blade of the preferred embodiment of the utility model;

[0017] Fig. 2 It is the schematic view of the noise reduction fan blade of the preferred embodiment of the utility model;

[0018] In the drawing, 1, fan blade body, 2, mounting base, 3, boss, 4, sawtooth part, 5, pit, 6, reinforcing rib. DETAILED DESCRIPTION

[0019] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model and cannot be understood as limiting the utility model.

[0020] In the description of the utility model, it is understood that the terms "upper", "lower", "horizontal", "top", "inner" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the invention.

[0021] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through intermediate medium.

[0022] As Figs. 1-2 shown, a kind of noise reduction fan blade, including fan blade body 1 and installation base 2, the fan blade body 1 is arranged at the top of installation base 2, the fan blade body 1 is provided with boss 3 at the end away from installation base 2, one side of the fan blade body 1 is sawtooth part 4.

[0023] One side of the fan blade body 1 is provided with at least two groups of neat circular pits 5, blade sawtooth is similar to owl wing, regular pit 5 in front of fan blade is similar to the feather layer of wing, reach the effect of noise reduction by imitating owl wing. The diameter of the pit 5 is 4.4mm, and the spacing between each group of pits 5 is 13mm.

[0024] The other side of the fan blade body 1 is provided with one group and above reinforcing ribs 6, and the reinforcing ribs 6 can effectively prevent the deformation of the fan blade. The height of the boss 3 gradually increases along the fan blade body 1, and the height of the highest part is 11mm.

[0025] The included angle between the fan blade body 1 and the horizontal plane is gradually changed, so that the generated airflow velocity is uniform. The included angle between the fan blade body 1 and the horizontal plane ranges from 25 to 45 degrees. The sawtooth part 4 is a gradually changing sawtooth structure, which can effectively reduce the turbulence generated by air separation from the fan blade, reduce noise and improve wind pressure.

[0026] When in use, one side of the fan blade body 1 is provided with sawtooth part 4, one side of the fan blade body 1 is provided with two groups and above neat pits 5, the other side of the fan blade body 1 is provided with one and above reinforcing ribs 6, which can effectively prevent the deformation of the fan blade body 1, the fan blade body 1 is provided in arc shape, the included angle between the fan blade body 1 and the horizontal plane is gradually changed, the fan blade body 1 is connected to the top of the installation base 2, and the installation base 2 is installed on the fan.

[0027] In this specification, the illustrative description of the terms does not necessarily refer to the same embodiment. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments in a suitable manner.

[0028] With the above ideal embodiment of the present application as the inspiration, through the above description, relevant staff can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the content of the specification, and the technical scope must be determined according to the scope of claims.

Claims

1. A noise reducing fan blade, comprising: It comprises a fan body (1) and a mounting base (2), the fan body (1) is arranged on the top of the mounting base (2), the end of the fan body (1) away from the mounting base (2) is provided with a boss (3), and the side of the fan body (1) is a sawtooth part (4).

2. The noise reducing fan blade of claim 1, wherein, One side of the fan body (1) is provided with at least two groups of arranged circular concaves (5).

3. The noise reducing fan blade of claim 2, wherein, The diameter of the concave (5) is 3-6mm, and the interval between each group of concaves (5) is 10-15mm.

4. The noise reducing fan blade of claim 1, wherein, The other side of the fan body (1) is provided with one group and more than one group of reinforcing ribs (6).

5. The noise reducing fan blade of claim 1, wherein, The height of the boss (3) gradually increases along the fan body (1), and the height of the highest part is 11mm.

6. The noise reducing fan blade of claim 1, wherein, The fan body (1) is arc-shaped, and the included angle between the fan body (1) and the horizontal plane is gradually changed, so that the generated air flow speed is uniform.

7. The noise reducing fan blade of claim 6, wherein, The included angle between the fan body (1) and the horizontal plane ranges from 25 to 45 degrees.

8. The noise reducing fan blade of claim 1, wherein, The sawtooth part (4) is a gradually changing sawtooth structure.

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