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Automobile engine cooling fan

A technology for automobile engines and cooling fans, which is applied in the direction of machines/engines, liquid fuel engines, mechanical equipment, etc. It can solve the problems of reducing the service life of the fan, unbalanced force on the blades, and affecting the performance of the fan, so as to improve the air volume and air pressure. Improve the rigidity and strength, increase the effect of the effective work area

Inactive Publication Date: 2008-03-19
WENZHOU YILONG AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, fans are injection molded, and their inherent internal stress forces the blades to squeeze the hub, especially for annular fans, which will cause unnecessary deformation of the fan during aging and affect the overall performance of the fan
The ribs of the hub of the ordinary annular fan are made of strip-shaped ribs. This structure is simple to open the mold, but the stability is poor and the deformation is large, which leads to uneven force on each blade, reduces the balance performance, and causes the fan to vibrate during operation. , increases the noise and reduces the service life of the fan

Method used

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  • Automobile engine cooling fan

Examples

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Effect test

Embodiment 1

[0014] Embodiment 1: Refer to Figures 1 and 2, an automobile engine cooling fan, including a tray 1, a hub 2 and ribs 3, and blades 4. The impeller is composed of a tray 1, a hub 2, and blades 4, and the blades 4 are airfoil-shaped The cross-section blades, the blade 4 and the hub 2 are integrally formed, the chord length ratio between the inner and outer diameters of each blade 4 is 1:1.1, the angle between the line of gravity center of each section of the blade 4 and the radial straight line is 5°, and each section of the blade 4 The projection distance of the center of gravity line on the rotating shaft is controlled at 2% of the impeller diameter, which is spatially twisted. The connection between the blade 4 and the hub 2 adopts a circular arc transition. shape. The blade 4 is connected with the guide ring 5.

Embodiment 2

[0015] Embodiment 2: Refer to Figures 1 and 2, an automobile engine cooling fan, including a tray 1, a hub 2 and ribs 3, and blades 4. The impeller is composed of a tray 1, a hub 2, and blades 4, and the blades 4 are airfoil-shaped Cross-section blades, blade 4 and hub 2 are integrally formed, the chord length ratio between the inner and outer diameters of each blade 4 is 1:1.5, the angle between the line of gravity center of each section of blade 4 and the radial line is 25°, and the section of blade 4 The projection distance of the center of gravity line on the rotating shaft is controlled at 8% of the diameter of the impeller, which is spatially twisted. The connection between the blade 4 and the hub 2 adopts a circular arc transition. Others are the same as in Example 1.

Embodiment 3

[0016] Embodiment 3: Referring to Figures 1 and 2, an automobile engine cooling fan includes a tray 1, a hub 2 and ribs 3, and blades 4. The impeller is composed of a tray 1, a hub 2, and blades 4, and the blades 4 are airfoil-shaped Cross-section blades, blade 4 and hub 2 are integrally formed, the ratio of chord length between the inner and outer diameters of each blade 4 is 1:1.3, the angle between the line of gravity center of each section of blade 4 and the radial line is 15°, each section of blade 4 The projection distance of the center of gravity line on the rotating shaft is controlled at 5% of the diameter of the impeller, which is spatially twisted. The connection between the blade 4 and the hub 2 adopts a circular arc transition. Others are the same as in Example 1.

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Abstract

A vehicle engine cooling fan is disclosed. The invention comprises a tray, a wheel hub and a reinforced rib, and blades. The impeller comprises a tray, a wheel hub, and blades. the blades are airfoil shaped cross section blades, the blades and the wheel hub are formed an integral body, the chord length ratio of the inner and the outer diameters of each blade is between 1:1.1 to 1:1.5, the included angle of each cross section gravity line and the radial straight line of the blades is between 5 degrees to 25 degrees, the projection distance on the rotating axle of each cross section gravity line of the blades is controlled between 2% to 8% of the impeller diameter, the projection distance presents a space twisted shape, and the arc transition is adopted at the connection of the blade and the wheel hub. The reinforced rib is a honeycomb-shaped reinforced rib, and the honeycomb-shaped reinforced rib is of a regular hexagon hexagonal shape. The blades and the diversion ring are connected together. The efficiency is high, the noise is small, the slip flow can not easily occur at the tail part, and the service life is long.

Description

Technical field [0001] The invention relates to an automobile engine cooling fan. Background technique [0002] With the rapid development of the country's economic construction, the use of automobiles has become increasingly popular. The heat dissipation system is a very important part of the automobile cooling system. The performance of the cooling fan directly leads to the running effect of the car engine. Low-noise and high-efficiency fans for cooling require compact size, light weight, and good aerodynamic performance and acoustic indicators. There are roughly two types of fans for automobiles, one is an open fan, and the other is an annular fan. [0003] The open cooling fan is mainly composed of trays, hubs and blades. The annular fan is mainly composed of trays, hubs, blades and guide rings. The blades of the annular fan are connected with the guide ring, which reduces the weight of the fan, increases the rigidity, reduces the deformation of the fan, and has good static b...

Claims

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Application Information

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IPC IPC(8): F04D29/38
Inventor 丁维福
Owner WENZHOU YILONG AUTO PARTS CO LTD
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