Electronic fan blade with relief structure

Abstract

The utility model discloses an electronic fan fan blade with heave structure, including fan blade hub and fan blade wheel ring, unevenly distribute with multiple leaves between the fan blade hub and the fan blade wheel ring, one end of the leaf is connected with the fan blade hub, and the other end is connected with the fan blade wheel ring, and the surface of each leaf is continuous irregular surface, the utility model discloses electronic fan fan blade's leaf uneven distribution, combine the leaf surface of heave structure and the front sweep structure, can effectively reduce the noise of electronic fan under the condition of keeping the air volume, especially the order noise under the whole car state.

Description

Technical Field

[0001] This utility model relates to the technical field of electronic fan blade structure, and in particular to an electronic fan blade with an undulating structure. Background Technology

[0002] Automotive electric fans primarily use the airflow generated by rotating blades to remove heat from modules such as radiators and condensers, thus aiding in the cooling of the car's engine, air conditioning, and battery. However, with the development of new energy vehicles, electric fans have gradually become a significant source of noise in automobiles. OEMs are increasingly demanding higher noise levels for automotive electric fans, requiring not only low overall noise but also superior internal quality and comfort, with noise spectrum limits set for certain parameters. For automotive radiator fans, airflow and noise are the primary performance indicators. Therefore, there is an urgent need to develop a high-airflow, low-noise fan to meet airflow requirements while reducing electric fan noise. Utility Model Content

[0003] The purpose of this invention is to provide an electric fan blade with an undulating structure, which can effectively reduce the noise of the electric fan, especially the order noise in the vehicle state, while maintaining airflow.

[0004] To solve the above-mentioned technical problems, this utility model provides an electronic fan blade with an undulating structure, including a fan blade hub and a fan blade ring; Multiple blades are unevenly distributed between the fan blade hub and the fan blade ring; One end of the blade is connected to the fan blade hub, and the other end is connected to the fan blade ring; Each blade has a continuous, irregular curved surface.

[0005] Preferably, the number of blades is 9, and they are unevenly distributed along the circumferential sidewall of the fan blade hub.

[0006] Preferably, the included angles between two adjacent fan blades are α1, α2, α3, α4, α5, α6, α7, α8, and α9, respectively; wherein α1 ranges from 37° to 38°, α2 ranges from 44° to 45°, α3 ranges from 44° to 45°, α4 ranges from 37° to 38°, α5 ranges from 34° to 35°, α6 ranges from 41° to 42°, α7 ranges from 45° to 46°, α8 ranges from 41° to 42°, and α9 ranges from 34° to 35°.

[0007] Preferably, the blade surface defines multiple undulating structures of the surface by means of the tilt angle Y and the blade chord length L.

[0008] Preferably, the tilt angle Y ranges from 15° to 25°, and the tilt angle Y gradually decreases from the fan impeller hub to the fan impeller ring.

[0009] Preferably, the ratio of the blade chord length L to the maximum outer diameter of the blade is 0.145 to 0.16, and the blade chord length L remains constant at 70 mm from the fan impeller hub to the fan impeller ring.

[0010] Preferably, the blade has a forward-swept structure and the leading edge of the blade, viewed from the rotation axis, satisfies the curve δ=15959x. 3 -10248x 2 +1854.2x-96.292; where x is the radius of the blade section and δ is the offset angle of the corresponding blade section.

[0011] Preferably, the undulating structure of the blade surface is arranged sequentially along the diameter direction of the blade.

[0012] Preferably, the number of undulation structures on the blade surface is 3 to 5.

[0013] Preferably, the air inlet edge of the fan impeller ring is provided with a flange, and the size of the flange is larger than the size of the fan impeller ring.

[0014] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the blades of the electric fan are unevenly distributed. Combined with the undulating blade surface and forward-swept structure, the noise of the electric fan can be effectively reduced while maintaining airflow, especially the order noise in the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an electronic fan blade with an undulating structure provided by this utility model; Figure 2 This is a front view of an electronic fan blade with an undulating structure provided by this utility model; Figure 3 This is a side view of an electronic fan blade with an undulating structure provided by this utility model; Figure 4 This is a schematic diagram of the tilt angle provided by this utility model; Figure 5 This is a schematic diagram of the blade chord length provided by this utility model; Figure 6 This is a schematic diagram of the cross-section of the blade provided by this utility model.

[0016] In the diagram: 1. Fan blade hub; 2. Fan blade rim; 3. Blade; 4. Irregular structure; 5. Flanged edge. Detailed Implementation

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0018] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0020] This utility model provides an electronic fan blade with an undulating structure. Please refer to [link / reference]. Figure 1-3 It includes a fan hub 1 and a fan wheel ring 2; multiple blades 3 are unevenly distributed between the fan hub 1 and the fan wheel ring 2; one end of each blade 3 is connected to the fan hub 1 and the other end is connected to the fan wheel ring 2; the surface of each blade 3 is a continuous irregular curved surface.

[0021] Specifically, such as Figure 2 As shown, there are 9 blades 3, which are unevenly distributed along the circumferential sidewall of the fan hub 1. The included angles between two adjacent fan blades are α1, α2, α3, α4, α5, α6, α7, α8, and α9, respectively. Among them, α1 ranges from 37° to 38°, α2 ranges from 44° to 45°, α3 ranges from 44° to 45°, α4 ranges from 37° to 38°, α5 ranges from 34° to 35°, α6 ranges from 41° to 42°, α7 ranges from 45° to 46°, α8 ranges from 41° to 42°, and α9 ranges from 34° to 35°.

[0022] For details, please refer to Figure 1 and Figure 4 The surface of the blade 3 is defined by the tilt angle Y and the blade chord length L, which define multiple undulating structures 4 on the surface. The tilt angle Y ranges from 15° to 25°, and the tilt angle Y gradually decreases from the fan blade hub 1 to the fan blade ring 2.

[0023] In this embodiment, as Figure 5 As shown, the ratio of the blade chord length L to the maximum outer diameter of the blade 3 is 0.145 to 0.16, and the blade chord length L remains constant at 70 mm from the fan impeller hub 1 to the fan impeller ring 2.

[0024] Furthermore, such as Figure 6 As shown, the blade 3 has a forward-swept structure, and the leading edge of the blade, viewed from the rotation axis, satisfies the curve δ=15959x. 3 -10248x 2 +1854.2x-96.292; where x is the radius of the blade section and δ is the offset angle of the corresponding blade section.

[0025] In this embodiment, the undulating structures 4 on the surface of the blade 3 are arranged sequentially along the diameter direction of the blade, and the number is 3 to 5.

[0026] For details, please continue reading. Figure 3 The air inlet edge of the fan impeller ring 2 is also provided with a flange 5, and the size of the flange 5 is larger than the size of the fan impeller ring 2.

[0027] In this invention, the blades of the electric fan are unevenly distributed. Combined with the undulating blade surface and forward-swept structure, the noise of the electric fan can be effectively reduced while maintaining airflow, especially the order noise in the vehicle.

[0028] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. An electronic fan blade with an undulating structure, characterized in that, Includes fan blade hub (1) and fan blade rim (2); Multiple blades (3) are unevenly distributed between the fan blade hub (1) and the fan blade ring (2); One end of the blade (3) is connected to the fan blade hub (1), and the other end is connected to the fan blade ring (2); The surface of each blade (3) is a continuous irregular curved surface; The surface of the blade (3) is defined by the tilt angle Y and the blade chord length L, which define multiple undulating structures (4) of the surface. The tilt angle Y ranges from 15° to 25°, and the trend of the tilt angle Y gradually decreases from the fan impeller hub (1) to the fan impeller ring (2). The ratio of the blade chord length L to the maximum outer diameter of the blade (3) is 0.145 to 0.16, and the blade chord length L remains unchanged from the fan impeller hub (1) to the fan impeller ring (2), which is 70 mm. The blade (3) has a forward-swept structure and the leading edge of the blade satisfies the curve δ=15959x when viewed from the direction of the rotation axis. 3 -10248x 2 +1854.2x-96.292; where x is the radius of the blade section and δ is the offset angle of the corresponding blade section.

2. The electronic fan blade with an undulating structure as described in claim 1, characterized in that, The number of blades (3) is 9, and they are unevenly distributed along the circumferential sidewall of the fan hub (1).

3. The electronic fan blade with an undulating structure as described in claim 2, characterized in that, The included angles between two adjacent fan blades are α1, α2, α3, α4, α5, α6, α7, α8, and α9, respectively; among them, α1 ranges from 37° to 38°, α2 ranges from 44° to 45°, α3 ranges from 44° to 45°, α4 ranges from 37° to 38°, α5 ranges from 34° to 35°, α6 ranges from 41° to 42°, α7 ranges from 45° to 46°, α8 ranges from 41° to 42°, and α9 ranges from 34° to 35°.

4. The electronic fan blade with an undulating structure as described in claim 1, characterized in that, The undulating structure (4) of the surface of the blade (3) is arranged sequentially along the diameter direction of the blade.

5. The electronic fan blade with an undulating structure as described in claim 1, characterized in that, The number of undulating structures (4) on the surface of the blade (3) is 3 to 5.

6. The electronic fan blade with an undulating structure as described in claim 1, characterized in that, The air inlet edge of the fan impeller ring (2) is provided with a flange (5), and the size of the flange (5) is larger than the size of the fan impeller ring (2).

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