Fan blade structure of axial fan

A technology of axial flow fan and fan blade, which is applied in the field of fan blade structure, and can solve the problems of axial flow fan such as low working efficiency and low efficiency, high air volume, high air pressure, low noise, and weakened blade strength.

Pending Publication Date: 2018-11-16
成都华川电装有限责任公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

In the traditional fan matching, technicians often design and modify through the experience of technicians. The fans selected in this way can only meet the cooling requirements of the system, and the work efficiency and efficiency of these axial fans are generally low. It cannot meet the requirements of high air volume, high air pressure, and low noise, and urgently needs improvement
If the area and length of the fan blades are increased bli

Method used

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  • Fan blade structure of axial fan
  • Fan blade structure of axial fan
  • Fan blade structure of axial fan

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Embodiment Construction

[0022] Referring to the accompanying drawings, specific embodiments of the present invention will be described in detail.

[0023] see Figure 1 to Figure 4 , a fan blade 2 structure of an axial flow fan, including a hub 1 and a plurality of fan blades 2 of the same shape distributed around the hub 1, the diameter of the fan hub 1 is 169.84mm, preferably, the outer peripheral wall of the hub 1 is uniform An odd number of fan blades 2 with the same shape are fixedly connected. This structure prevents the overall symmetrical structure of the fan blades 2 and can avoid vibration caused by the symmetrical structure during motion. In this embodiment, seven fan blades 2 with the same shape are evenly fixed to the outer peripheral wall of the hub 1 . The plurality of fan blades 2 are fan blades 2 with LS airfoil characteristics, and each fan blade 2 includes five characteristic sections. The section is 132.32mm, the third characteristic section is 166.75mm, the fourth characteristi...

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Abstract

The invention relates to a fan blade structure of an axial fan. The fan blade structure comprises a hub and a plurality of fan blades distributed on the periphery of the hub and with the same shape and is characterized in that the fan blades have an LS airfoil profile characteristic; each of the fan blades comprises five characteristic cross sections; the characteristic cross section mounting angles of each of the five characteristic cross sections are sequentially 27.74 degrees, 25.61 degrees, 21.61 degrees, 20.70 degrees and 20.33 degrees; the stacking line of the gravity centers of the fanblades is positioned in a circumferential plane perpendicular to the axial lead of the hub; the circumferential plane is the X-Y plane; the governing equation of the stacking line of the gravity centers is y=112.319X<3>+2.0627X<2>-0.0081X, X is the coordinates of the gravity center in the X direction; Y is the coordinates of the gravity center in the Y direction; the relative thicknesses of all characteristic cross sections on the same fan blade are in nonlinear distribution from the blade root to the blade tip, and the value of the relative thicknesses is 0.03-0.07.

Description

technical field [0001] The invention relates to a fan, in particular to a blade structure of an axial flow fan. Background technique [0002] The engine cooling fan is an important part of the vehicle cooling system. The performance of the fan directly affects the heat dissipation effect of the engine, which in turn affects the performance of the engine. If the fan is not selected properly, it will lead to insufficient or excessive cooling of the engine, resulting in deterioration of the working environment of the engine, which will affect the performance and service life of the engine. In addition, the power consumed by the fan accounts for about 5% to 8% of the output power of the engine. Under the trend of pursuing environmental protection and low energy consumption, the effective efficiency of the fan has also attracted increasing attention. In the traditional fan matching, technicians often design and modify through the experience of technicians. The fans selected in t...

Claims

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Application Information

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IPC IPC(8): F04D29/32F04D29/38F04D29/66
CPCF04D29/325F04D29/384F04D29/666
Inventor 张川张胜杰王欢
Owner 成都华川电装有限责任公司
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