Fan engine with noise reduction function

An engine and functional technology, applied in the direction of machines/engines, mechanical equipment, gas turbine devices, etc., can solve problems such as unfavorable user practicality, high engine noise, and external components involved in the engine, so as to improve user experience, meet airworthiness requirements, Overall noise reduction effect

Pending Publication Date: 2022-03-25
浙江云途飞行器技术有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ducted fan engine mainly has the following deficiencies: (1) the wind noise and the noise of the engine itself are still relatively large, which is not conducive to practical use by users; (2) there is no shield to protect the engine, and it is easy to cause external components to be involved in the engine risk

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fan engine with noise reduction function
  • Fan engine with noise reduction function
  • Fan engine with noise reduction function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] A fan engine with noise reduction function, comprising an engine case 1, an air inlet motor 2, an air outlet motor 3 and a muffler 4, the engine case 1 is formed with an air inlet 5 and an air outlet 6, the muffler 4, the air inlet The wind motor 2 is installed in the air inlet 5 respectively, and the air outlet motor 3 is fixedly installed at the air outlet 6, and the engine cover 1 is filled with sound-absorbing cotton 7, and by the setting of the engine housing 1, it is convenient for the air inlet motor 2 and the air outlet. The wind noise generated by the wind engine 3 and the noise generated by its own work are reduced to reduce the overall noise of the fan engine, improve user experience, and help meet airworthiness requirements.

[0025] The side wall of the engine case 1 includes a first air guide surface 8, a second air guide surface 9, a first air inl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A fan engine with a noise reduction function comprises an engine housing, an air inlet engine, an air outlet engine and a silencing device, an air inlet and an air outlet are formed in the engine housing, the silencing device and the air inlet engine are installed in the air inlet, the air outlet engine is fixedly installed at the air outlet, silencing cotton is filled in the engine housing, and the silencing cotton is filled in the silencing cotton. Through the arrangement of the engine shell, noise reduction can be conveniently conducted on wind noise generated by the air inlet engine and the air outlet engine and noise generated by working of the fan engine, the overall noise of the fan engine is reduced, the use experience of a user is improved, and airworthiness requirements can be met.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a fan engine with a noise reduction function. Background technique [0002] Ducted fan engines are the power choice for many aircraft because of the safety of their design and the potential for significant performance improvements. In particular, turbofan engines with high bypass ratio are widely used in large civil and military transport aircraft and other large subsonic aircraft such as tankers, early warning aircraft, anti-submarine aircraft, etc. due to their low fuel consumption and low noise. . However, the "wing tip vortex" caused by the difference in gas flow pattern between the fan wing tip and the inside of the duct will have a great impact on the performance of the engine. During the flight, there will be a lot of noise and resistance. [0003] The invention with the application number: CN201811315625.1 discloses a method for increasing the pulling force...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F02K3/06F02C7/24
CPCF02K3/06F02C7/24
Inventor田云田丰何景武王光秋彭健
Owner浙江云途飞行器技术有限公司