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Variable-angle large-flow low-noise engine cooling fan

A cooling fan, variable angle technology, applied in the direction of engine cooling, engine components, machine/engine, etc., can solve the problems of small flow and high noise

Inactive Publication Date: 2016-01-20
JIANGSU CHAOLI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is proposed to solve the above-mentioned problem of small flow rate and high noise, and its purpose is to provide a variable-angle cooling fan. The variable-angle low-noise cooling fan includes: wind protection ring, wheel hub, fan blade, insert and radial rib plate

Method used

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  • Variable-angle large-flow low-noise engine cooling fan
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  • Variable-angle large-flow low-noise engine cooling fan

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Experimental program
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Embodiment Construction

[0010] The present invention is described below in conjunction with accompanying drawing.

[0011] see figure 1 and Figure 4 As shown, the large-flow low-noise engine cooling fan includes a windshield (1), a cylindrical hub (2), fan blades (3), inserts (4) and radial ribs (5).

[0012] Among them, the cylindrical hub (2) cooperates with the drive shaft of the drive motor through the insert (4); a plurality of rotating fan blades (3) are radially arranged on the outer peripheral surface of the hub (2) and are aligned with the hub (2) They are connected at unequal angles; the outer ring of the radial fan (2) has a windshield ring (1) for improving rotation rigidity and reducing deformation.

[0013] see figure 1 and figure 2 As shown, the fan blades (3) and the hub (2) are connected at unequal angles to reduce the flow loss. The specific angle size is determined by the CFD flow field noise analysis, and the angle is corrected by the wind noise test .

[0014] see image...

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Abstract

The invention relates to a cooling fan which comprises a cylindrical hub (2) and a plurality of rotating fan blades (3). The cylindrical hub is combined with a driving shaft of a driving motor, the rotating fan blades are arranged on the peripheral surface of the hub (2) in a radial manner and connected with the hub (2), and a wind shielding ring (1) is arranged outside the radial fan blades (3) and used for improving rotating rigidity and reducing deformation. The cooling fan is characterized in that the fan blades at the combined positions between all fan blades (3) and the outer peripheral surface of the hub (2) are asymmetrically distributed in a variable-angle manner, the effect of generating low noise and large flow is achieved, and the NVH performance is improved on the base of guaranteeing large flow.

Description

technical field [0001] The invention relates to an automobile engine cooling fan, in particular to a variable-angle low-noise engine cooling fan. Background technique [0002] Automobile engine noise will cause the driver's boredom and fatigue, thereby affecting driving safety; the greater the intensity and frequency of the noise, the greater the impact on people's body and work, and the deeper the harm to people's hearts. People cause unnecessary troubles and pressures, which make people feel disgusted with cars. Research on technology to reduce car engine noise has always been an important topic in the development of car technology. One of the deficiencies of the current engine cooling fans is that the aerodynamic performance and acoustic indicators of the blades are a pair of irreconcilable contradictions. How to effectively solve them also puts forward new requirements for automotive cooling fans. Contents of the invention [0003] The present invention is proposed to...

Claims

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Application Information

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IPC IPC(8): F04D29/34F04D29/32F04D29/66F01P5/04
Inventor 袁丹华李园张礼德巢峰眭旭辉
Owner JIANGSU CHAOLI ELECTRIC
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