A type of large-angle oblique blade cross-flow fan blade

Abstract

This utility model discloses a large-angle inclined blade cross-flow fan blade, relating to the field of air conditioning accessories technology; it includes a first disc, with several fan blades arranged in a circumferential array along one edge of the first disc, and a second disc fixedly installed on the other side of the fan blades. The first disc and the second disc are parallel and coaxially arranged. The fan blades have an arc-shaped structure with an inclination angle of 35°-45°. An annular reinforcing rib is fixedly installed at the middle of the fan blades, and the annular reinforcing rib is parallel and coaxially arranged with the first and second discs. A mounting hole is opened at the center of one side of the first disc, and several anti-slip stripes are fixedly installed on the inner annular surface of the mounting hole. The blade inclination angle is optimized to 35°-45°, which, compared with traditional small-angle blades, provides a larger air-pushing area and higher airflow guidance efficiency. Under the same motor speed, the air volume can be significantly increased, meeting the ventilation needs of large spaces.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning accessories technology, specifically a large-angle inclined blade cross-flow fan blade. Background Technology

[0002] As a core component of ventilation equipment, the structural design of cross-flow fan blades directly affects the equipment's airflow, air pressure, noise, and energy consumption performance. Currently, most cross-flow fan blades on the market adopt a small-angle inclined blade structure.

[0003] Small-angle blades have low air-driving efficiency, especially in the limited installation space of equipment, making it difficult to achieve high air volume output and meet the ventilation needs of large spaces. To address these issues, a large-angle inclined blade cross-flow fan is proposed. Utility Model Content

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a large-angle inclined blade cross-flow fan blade, including a first disk, with a plurality of fan blades distributed in a circumferential array on one side edge of the first disk, and a second disk fixedly installed on the other side of the fan blades. The first disk and the second disk are parallel and coaxially arranged, the fan blades are arc-shaped, and the inclination angle of the fan blades is 35°-45°.

[0005] Preferably, an annular reinforcing rib is fixedly installed at the middle end of the fan blade, and the annular reinforcing rib is parallel and coaxially arranged with the first disk and the second disk.

[0006] Preferably, the fan blade is made of glass fiber reinforced ABS plastic.

[0007] Preferably, a mounting hole is provided at the center of one side of the first disc, and a plurality of anti-slip stripes are fixedly installed on the inner circumferential surface of the mounting hole.

[0008] Preferably, the angle between the two adjacent fan blades is the same, and the tilt angle is 30°.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] The blade tilt angle is optimized to 35°-45°, which provides a larger air-pushing area and higher airflow guidance efficiency compared to traditional small-angle blades. At the same motor speed, the air volume can be significantly increased to meet the ventilation needs of large spaces. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a top view of the present invention;

[0014] Figure 3 This is a side view of the present invention.

[0015] In the diagram: 100, first disc; 200, second disc; 300, annular reinforcing rib; 400, fan blade; 500, mounting hole; 600, anti-slip stripes. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Example: Figures 1-3 As shown, this utility model provides a large-angle inclined blade cross-flow fan, including a first disk 100. Several fan blades 400 are distributed in a circumferential array on one side edge of the first disk 100. A second disk 200 is fixedly installed on the other side of the fan blades 400. The first disk 100 and the second disk 200 are parallel and coaxially arranged. The fan blades 400 have an arc-shaped structure and an inclination angle of 35°-45°. The optimized inclination angle of the fan blades 400 is 35°-45°, which, compared with traditional small-angle blades, provides a larger air-pushing area and higher airflow guidance efficiency. The angle between two adjacent fan blades 400 is the same, and the inclination angle is 30°. The included angle between each group of adjacent fan blades 400 is 30°, ensuring airflow uniformity and avoiding the generation of local vortices.

[0018] A ring-shaped reinforcing rib 300 is fixedly installed at the middle end of the fan blade 400. The ring-shaped reinforcing rib 300 is parallel to and coaxially arranged with the first disc 100 and the second disc 200.

[0019] By adopting the above technical solution, the annular reinforcing rib 300 can enhance the fracture resistance of the root of the wind turbine blade 400.

[0020] The blade of the 400 is made of glass fiber reinforced ABS plastic.

[0021] By adopting the above technical solution, the fan blade 400, the first disc 100, the second disc 200 and the annular reinforcing rib 300 are all integrally die-cast and are all made of glass fiber reinforced ABS plastic material, which can greatly improve the resistance to deformation.

[0022] A mounting hole 500 is provided at the center of one side of the first disc 100, and several anti-slip stripes 600 are fixedly installed on the inner ring surface of the mounting hole 500.

[0023] The mounting hole 500 allows the output shaft of the drive motor to be quickly inserted into the mounting hole 500 to complete the installation and fixation of the drive device and the first disc 100. The anti-slip stripes 600 prevent the first disc 100, the second disc 200 and the fan blade 400 from detaching from the output end of the drive motor during rotation.

[0024] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A large angle pitched blade cross flow impeller comprising a first disc (100) characterised in that: Several fan blades (400) are arranged in a circular array on one side edge of the first disc (100). A second disc (200) is fixedly installed on the other side of the fan blades (400). The first disc (100) and the second disc (200) are parallel and coaxially arranged. The fan blades (400) have an arc-shaped structure and the tilt angle of the fan blades (400) is 35°-45°.

2. A large angle pitched blade cross flow fan blade as claimed in claim 1 wherein, A ring-shaped reinforcing rib (300) is fixedly installed at the middle end of the fan blade (400). The ring-shaped reinforcing rib (300) is parallel to and coaxially arranged with the first disk (100) and the second disk (200).

3. A large angle pitched blade cross flow fan blade as claimed in claim 2 wherein, The fan blade (400) is made of glass fiber reinforced ABS plastic.

4. A large angle pitched blade cross flow fan blade as claimed in claim 1, wherein, A mounting hole (500) is provided at the center of one side of the first disc (100), and a number of anti-slip stripes (600) are fixedly installed on the inner ring surface of the mounting hole (500).

5. A large angle pitched blade cross flow fan blade as claimed in claim 4 wherein, The angle between the two adjacent blades (400) is the same, and the tilt angle is 30°.

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