Low-noise rotor-stator fan system

A fan system, low-noise technology, applied to parts of pumping devices for elastic fluids, non-variable pumps, machines/engines, etc., can solve problems such as adverse effects of the driver's working environment, and achieve a weakened span Relevance, improving work comfort, and reducing the effect of rotational-static interference noise

Active Publication Date: 2021-03-02
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this kind of fan system will generate rotational-static interference noise, which will have a very serious adverse effect on the driver and the working environment. How to effectively reduce the rotational-static interference noise is an important issue for human-machine environment researchers.

Method used

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  • Low-noise rotor-stator fan system
  • Low-noise rotor-stator fan system
  • Low-noise rotor-stator fan system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Put the stator fan assembly A with the leading edge wave 8 and the trailing edge wave 9, the rotor fan assembly B with the bionic spoiler structure 15 and the inner sawtooth structure 17, the bracket C, and the motor D according to figure 1 Mounting shown is fixed. The sawtooth structure is determined by the wave sawtooth a, where the chord length of the middle section of the blade is e = 38mm, that is, the wave sawtooth a = 1.9mm, b = 2.6mm, the total length of the blade c = 57mm, the leftover d = 7.8mm, the leading edge of the blade Wave sawtooth f=8mm. The stator fan blade group 3 is composed of 8--10 stator fan blades, the base 4 is fixedly connected to the inner ring of the inner ring 2, and the 8--10 stator fan blades 7 of the stator fan blade group 3 are evenly distributed along the circumference, and Fixedly connected between the outer ring 1 and the inner ring 2, the included angle α1 between the centerline of 8--10 stator fan blades 7 of the stator fan blade ...

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Abstract

The invention provides a low-noise rotor-stator fan system, and belongs to the technical field of impeller machinery design. A motor, a stator fan assembly and a rotor fan assembly are sequentially arranged from back to front; the motor is fixedly connected to the rear face of a base of the stator fan assembly; an output shaft of the motor penetrates through a center hole of the base in the statorfan assembly and is fixedly connected with a center hole II of a coupling shaft in the rotor fan assembly B; the rear face of a support plate with a hole in a support is fixedly connected to the front face of an outer ring I in the stator fan assembly through a bolt; and the rotor fan assembly is located in a duct ring of the support. According to the low-noise rotor-stator fan system, a front edge and a tail edge wave sawtooth structure are designed on a stator fan, a bionic turbulent flow structure is designed on the front edge of a rotor fan, an inner sawtooth structure is designed on thetail edge of the rotor fan, and therefore the purpose of reducing rotor-stator interference noise of the rotor-stator fan system is achieved, the cooling efficiency of a large engineering vehicle heatdissipation system is improved, the rotor-stator interference noise is effectively reduced, and the purposes of saving energy and reducing noise are achieved.

Description

technical field [0001] The invention belongs to the technical field of impeller machinery design, and in particular relates to a low-noise rotary-static fan system. Background technique [0002] The heat dissipation system of large-scale engineering vehicles is the key to maintaining the smooth and continuous operation of various systems of the vehicle and ensuring the stable and reliable power performance and economic performance of the vehicle. In the traditional engineering vehicle cooling system, the energy consumption of the fan accounts for about 5-10% of the effective power of the engine. For large engineering vehicles, because the cooling system needs to take into account the heat dissipation requirements of the hydraulic torque converter and hydraulic retarder, As a result, the energy consumption of the system is greatly increased, and the noise generated by the fan is also increased, which can reach 100dB, causing great bodily harm to the driver. In order to effec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54F04D29/38F04D29/32F04D29/66F04D29/68
CPCF04D29/325F04D29/388F04D29/544F04D29/666F04D29/667F04D29/681
Inventor 张成春杜天宇孙潇伟高美红沈淳张英朝赵佳乐韩志武任露泉
Owner JILIN UNIV
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