A low-noise rotary-static fan system

A fan system, low-noise technology, applied to non-variable-capacity pumps, pump components, components of pumping devices for elastic fluids, etc. The effect of reducing noise and improving work comfort

Active Publication Date: 2021-08-10
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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  • A low-noise rotary-static fan system
  • A low-noise rotary-static fan system
  • A low-noise rotary-static 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

A low-noise rotary-static fan system belongs to the technical field of turbomachinery design. In the present invention, the motor, stator fan assembly and rotor fan assembly are arranged sequentially from back to front; the motor is fixed behind the base of the stator fan assembly, and the output of the motor The shaft passes through the center hole of the base in the stator fan assembly, and is fixedly connected with the center hole II of the coupling shaft in the rotor fan assembly B, and the back of the support plate with holes in the bracket is fixed to the front of the outer ring I in the stator fan assembly by bolts , the rotor fan assembly is located in the duct ring of the bracket; in the present invention, the wave sawtooth structure is designed on the leading edge and trailing edge of the stator fan, the bionic spoiler structure is designed on the leading edge of the rotor fan, and the inner sawtooth structure is designed on the trailing edge to reduce the rotational speed. ‑Static fan system for the purpose of turning ‑ static interference noise, so as to improve the cooling efficiency of the cooling system of large engineering vehicles, while effectively reducing the turning ‑ static interference noise, and achieving the purpose of energy saving and noise reduction.

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 Patents(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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