Fan blade of cooling fan

A technology for cooling fans and fan blades, which is applied to components of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., to achieve obvious advantages in noise performance, small losses, and improved flow conditions

Inactive Publication Date: 2015-11-11
SHANGHAI MALU RI YONG JEA GATE ELECTRIC +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Fan blade of cooling fan
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  • Fan blade of cooling fan

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] according to figure 1 , figure 2 The wind blade of a cooling fan shown is composed of a hub 3 and a blade 2 wind protection ring 1. The wind blade is an integral injection molded product. 3 are connected, and the coupling structure 4 is arranged on the hub 3. The motor shaft is connected to the fan blade through the coupling structure 4 to drive the fan blade to rotate and transport air. The blades in the present invention are 8 equidistant distributions, and the distribution angles are 45°, as figure 1 Shown in A1. Among them, the blade adopts a forward-curved type, and 11 cross-sections are designed equidistantly from the inner diameter to the outer diameter. 8.1°, -6.6°, -3°, 2.6°, 9.4°, 19.2°, such as figure 1 Shown in A2. In order to obtain stable flow and operate at the highest static pressure efficiency under specified wor...

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Abstract

The invention relates to a fan, in particular to a fan blade of a cooling fan. The fan blade comprises eight blades, and is characterized in that the eight blades are distributed at equal intervals and are bent forwards; the blades are provided with eleven sections at equal intervals, the bending angles are 0, minus 3.4 degree, minus 5.8 degree, minus 7.4 degree, minus 8.2 degree, minus 8.1 degree, minus 6.6 degree, minus 3 degree, 2.6 degrees, 9.4 degrees and 19.2 degrees in sequence from the inner diameter to the outer diameter; the blade mounting angles are 32.83 degrees, 28.92 degrees, 25.64 degrees, 23.12 degrees, 21.17 degrees, 19.96 degrees, 18.57 degrees, 17.53 degrees, 17.19 degrees, 17.16 degrees and 17.70 degrees in sequence from the inner diameter to the outer diameter; the radium section chord lengths of the blades are 66.95 mm, 69.41 mm, 71.21 mm, 71.97 mm, 72.05 mm, 72.32 mm, 73.67 mm, 75.17 mm, 78.34 mm, 83.92 mm and 88.58 mm in sequence from the inner diameter to the outer diameter. On the premise of meeting the flow performance of existing products, the fan blade has a better denoising effect, can lower assembly noise and can improve the sound quality.

Description

technical field [0001] The invention relates to a fan, in particular to a fan blade of a cooling fan. Background technique [0002] At present, the fan blades used in the cooling fan used in the automobile (sedan car) are structurally divided into banded fan blades and non-exchanging fan blades, and the blade type is divided into straight blades and curved blades. [0003] With the development of the automobile industry, people have higher and higher requirements for automobile functions, not only pursuing the appearance, but also paying more attention to its internal quality and comfort. For automotive cooling fans, the air volume and noise are the main performance indicators. Vehicle manufacturers often require the fan to have a high air volume and low power consumption under certain working conditions, which requires the fan to have a high High efficiency, while requiring the fan to have lower noise. And with the advancement of science and technology, all vehicle manufa...

Claims

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Application Information

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IPC IPC(8): F04D29/38F04D29/32
Inventor 马宝发
Owner SHANGHAI MALU RI YONG JEA GATE ELECTRIC
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