Anti-resistance low-noise fan blade for industrial ceiling fan

Abstract

The anti-resistance low-noise fan blade for the industrial ceiling fan comprises a plastic substrate, a first fillet and a second fillet are arranged at the end of the outer side of the plastic substrate respectively, a plane plate and a curved plate are sequentially arranged on the plastic substrate in the width direction, and a plurality of screw holes used for being connected with a motor are formed in the end of one end of the plane plate. A strip-shaped groove is formed in the other end of the surface plate in the length direction, a plurality of reinforcing ribs are arranged in the strip-shaped groove at equal intervals, the strip-shaped groove is divided into a plurality of first flow guide grooves distributed in a row through the reinforcing ribs, and a plurality of second flow guide grooves distributed in an array are formed in the curved plate. And four edges of the first diversion trench and the second diversion trench are inclined inwards to form inclined surfaces. According to the utility model, air can be effectively driven to move, stable airflow formed by the air is disturbed, and the flowing of the air becomes disordered, so that the resistance is reduced and the air volume is increased. Meanwhile, when the fan blades rotate, air is collected along the flow guide grooves and guided into the grooves, and then is rapidly guided out through inclined planes in the grooves, so that the impact noise between the air and the fan blades is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fan blades, in particular to an anti-resistance and low-noise fan blade for an industrial ceiling fan. Background Art

[0002] Industrial fans are a common industrial machine widely used in industrial plants, logistics warehouses, waiting rooms, exhibition halls, gymnasiums, supermarkets and other tall spaces for space ventilation and personnel cooling. The inner arc surface of the traditional fan blade structure is basically a straight line or a curved blade with a smooth surface. When the fan blade rotates at high speed, a stable air layer will form on the surface of the fan blade, which will produce a large air resistance. In addition, due to the vortex separation at the tail edge of the fan blade, the fan blade has a small air volume and a large noise. Utility Model Content

[0003] In order to solve the technical problems mentioned in the background technology, the utility model provides an anti-resistance and low-noise fan blade for an industrial ceiling fan.

[0004] The utility model adopts the following technical solution: an anti-resistance and low-noise fan blade for an industrial ceiling fan, comprising a plastic substrate;

[0005] The plastic substrate is in the shape of a long strip;

[0006] The outer ends of the plastic substrate are respectively provided with rounded corners 1 and 2;

[0007] The plastic substrate is provided with a flat plate and a curved plate in sequence along the width direction;

[0008] The curved plate is bent downward along the extension direction of the flat plate;

[0009] A plurality of screw holes for connecting to the motor are arranged at one end of the flat plate;

[0010] The other end of the flat plate is provided with a strip groove along the length direction;

[0011] A plurality of reinforcing ribs are arranged at equal intervals in the strip-shaped groove;

[0012] The plurality of reinforcing ribs divide the strip-shaped grooves into a plurality of first guide grooves arranged in a row;

[0013] The curved plate is provided with a plurality of second guide grooves arranged in an array;

[0014] The plurality of second guide grooves are arranged in parallel with the plurality of first guide grooves;

[0015] The four sides of the first guide groove and the second guide groove are inclined inwardly to form inclined surfaces.

[0016] Furthermore, the fillet radius of the first fillet is 5-8 mm, and the fillet radius of the second fillet is 25-28 mm.

[0017] Furthermore, the plurality of screw holes are arranged in a T shape.

[0018] Furthermore, the angle between a line connecting the end of the curved panel and the flat panel and a horizontal plane is less than 15°.

[0019] Compared with the prior art, the utility model has the following advantages: the low-noise and low-resistance fan blades for industrial ceiling fans designed by the utility model are provided with a flat plate and a curved plate compared with the traditional curved blades. The flat plate and the curved plate are covered with a first guide groove and a second guide groove. Compared with the curved blades with smooth curved surfaces, when the motor drives the fan blades to rotate, the air passes through the surface of the fan blades, and the guide grooves can guide the air passing through the fan blades, effectively driving the air to move, disrupting the stable airflow formed by the air, making the air flow chaotic, thereby reducing resistance and increasing air volume. At the same time, when the fan blades rotate, the air gathers the airflow along the guide grooves and guides it into the grooves, and then is quickly guided out by the inclined surface in the grooves, thereby reducing the impact noise between the air and the fan blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of the utility model of the low-noise and low-resistance fan blade for industrial ceiling fans;

[0021] Figure 2 It is a top view of the anti-resistance and low-noise fan blade for the industrial ceiling fan of the utility model.

[0022] in:

[0023] 1-Plastic substrate, 2-Rounded corner 1, 3-Rounded corner 2,

[0024] 11- flat plate, 12- curved plate, 13- screw hole, 14- reinforcing rib, 15- first guide groove, 16- second guide groove, 17- inclined surface. DETAILED DESCRIPTION

[0025] In order to facilitate those skilled in the art to understand the technical solution of the utility model, further description is now made with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model.

[0026] In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of the embodiments of the present invention. However, it is apparent that one or more embodiments may be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present invention.

[0027] like Figure 1-2 As shown, the utility model designs an anti-resistance and low-noise fan blade for an industrial ceiling fan, comprising a plastic substrate 1, wherein the plastic substrate 1 is in the shape of an elongated strip. Rounded corners 2 and 3 are respectively provided at the outer ends of the plastic substrate 1, and the rounded corners help to reduce wind resistance. In a specific implementation, the fillet radius of the fillet 2 is 5-8mm, and the fillet radius of the fillet 3 is 25-28mm. The plastic substrate 1 is sequentially provided with a flat plate 11 and a curved plate 12 along the width direction, and the curved plate 12 is bent downward along the extension direction of the flat plate 11, and the angle between the line between the end of the curved plate 12 and the flat plate 11 and the horizontal plane is less than 15°. A plurality of screw holes 13 for connecting to a motor are provided at one end of the flat plate 11, and the plurality of screw holes 13 are arranged in a T-shape, and the T-shape arrangement can make the connection between the fan blade and the motor more firm to avoid shaking during rotation.

[0028] In this embodiment, a strip groove is provided on the other end of the plane plate 11 along the length direction, and a plurality of reinforcing ribs 14 are arranged at equal intervals in the strip groove to improve the toughness and stability of the overall structure of the fan blade.

[0029] In this embodiment, a plurality of reinforcing ribs 14 divide the strip grooves into a plurality of first guide grooves 15 arranged in a row, a plurality of second guide grooves 16 arranged in an array are opened on the curved panel 12, and a plurality of second guide grooves 16 are arranged opposite to a plurality of first guide grooves 15, and the four sides of the first guide grooves 15 and the second guide grooves 16 are inclined inwardly to form an inclined surface 17.

[0030] In summary, the low-noise and low-resistance fan blades for industrial ceiling fans designed by the utility model are provided with a flat plate and a curved plate compared to the traditional curved blades. The flat plate and the curved plate are covered with a first guide groove and a second guide groove. Compared with the curved blades with smooth curved surfaces, when the motor drives the fan blades to rotate, the air passes through the surface of the fan blades, and the guide grooves can guide the air passing through the fan blades, effectively driving the air to move, disrupting the stable airflow formed by the air, and making the air flow chaotic, thereby reducing resistance and increasing air volume. At the same time, when the fan blades rotate, the air gathers the airflow along the guide grooves and guides it into the grooves, and then is quickly guided out by the inclined surface 17 in the grooves, thereby reducing the impact noise between the air and the fan blades.

[0031] The above embodiments are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An industrial ceiling fan with low noise and low resistance, characterized in that: It comprises a plastic substrate (1); The plastic substrate (1) is in the shape of a long strip; The outer ends of the plastic substrate (1) are respectively provided with rounded corners 1 (2) and 2 (3); The plastic substrate (1) is provided with a flat plate (11) and a curved plate (12) in sequence along the width direction; The curved plate (12) is bent downward along the extension direction of the flat plate (11); A plurality of screw holes (13) for connecting to a motor are provided at one end of the flat plate (11); The other end of the plane plate (11) is provided with a strip groove along the length direction; A plurality of reinforcing ribs (14) are arranged in equal intervals in the strip-shaped groove; The plurality of reinforcing ribs (14) divide the strip-shaped groove into a plurality of first guide grooves (15) arranged in a row; A plurality of second flow guide grooves (16) arranged in an array are provided on the curved plate (12); The plurality of second guide grooves (16) and the plurality of first guide grooves (15) are arranged in parallel; The four sides of the first guide groove (15) and the second guide groove (16) are all inclined inwardly to form inclined surfaces (17).

2. The low-noise and low-resistance fan blade for an industrial ceiling fan according to claim 1, characterized in that: The fillet radius of the first fillet (2) is 5-8 mm, and the fillet radius of the second fillet (3) is 25-28 mm.

3. The low-noise and low-resistance fan blade for an industrial ceiling fan according to claim 2, characterized in that: The plurality of screw holes (13) are arranged in a T shape.

4. The low-noise and low-resistance fan blade for an industrial ceiling fan according to claim 3, characterized in that: The angle between the line connecting the end of the curved panel (12) and the flat panel (11) and the horizontal plane is less than 15°.

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