Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reactive muffler structure used for construction machinery

A technology of resistant noise reduction and construction machinery, applied in mechanical equipment, machines/engines, noise reduction devices, etc., it can solve the problems of insignificant noise reduction effect in medium and high frequency, no effective control of exhaust back pressure, etc., and achieve low exhaust gas. Back pressure, good aerodynamic performance, the effect of reducing airflow regeneration noise

Inactive Publication Date: 2015-02-11
SHANDONG UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this structure has no obvious noise reduction effect on medium and high frequencies, and does not effectively control the exhaust back pressure.

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
  • Reactive muffler structure used for construction machinery
  • Reactive muffler structure used for construction machinery
  • Reactive muffler structure used for construction machinery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 , figure 2 As shown, the new resistant muffler structure for construction machinery includes a cylinder body 9, an air intake pipe 1, and an air outlet pipe 8. The cylinder body is divided into chamber I2, chamber II4, and chamber III7; the main part of the muffler cylinder 5 is set in the chamber II4, and the front and rear ports of the muffler cylinder 5 communicate with chamber I2 and chamber III7 respectively; The above-mentioned muffler tube 5 is a vertically symmetrical DC streamlined perforated tube along the transverse center line. The section of the muffler tube part located in the chamber I2 along the center line includes a first curved section 10 that is symmetrical up and down. The main body of the muffler tube located in the chamber II4 Part of the section along the center line includes a second curved section 11 ...

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

The invention discloses a reactive muffler structure used for construction machinery. The reactive muffler structure is characterized in that a cylinder body is internally successively divided into a cavity chamber I, a cavity chamber II, and a cavity chamber III which are mutually independent from front to back through a front partition plate and a rear partition plate which are longitudinally arranged; an air inlet pipe, an air outlet pipe and a noise-reducing tube are axially arranged along the cylinder body; the air inlet pipe is communicated with the cavity chamber I; and the air outlet pipe is communicated with the cavity chamber III; a noise-reducing tube main body is positioned in the cavity chamber II, and the front and rear ports of the noise-reducing tube are respectively communicated with the cavity chamber I and the cavity chamber II; the noise-reducing tube is a direct current streamline form perforated pipe which is symmetrical up and down along a transverse central line and the section of the noise-reducing tube part in the cavity chamber I along with the center line comprises a first curve segment which is symmetrical up and down; the second of the noise-reducing tube main body part positioned in the cavity chamber II along with the center line comprises a second curve segment and a third curve segment which are symmetrical up and down and are connected mutually; the first curve segment is connected with the second curve segment through a straight line segment; and the tail end of the third curve segment is extended to the cavity chamber III through the straight line segment. The reactive muffler structure provided by the invention has the advantages that the structure is reasonable, and the airflow regeneration noises are small.

Description

technical field [0001] The invention relates to a novel muffler structure, in particular to a resistant muffler structure for engineering machinery. Background technique [0002] Resistant mufflers are one of the main ways to control the noise of construction machinery. The improvement of muffler design level is of great significance for improving the quality of construction machinery in my country. Insertion loss and pressure loss are the key factors to evaluate the noise reduction performance and aerodynamic performance of mufflers. Two very important evaluation indicators. Design research to improve the muffler, so that while increasing the transmission loss, it is an important means to reduce noise by ensuring that the pressure loss is within the range required by the engine. [0003] Automobile Engineering 2008 (Volume 30) No. 3 "Automotive Muffler Optimal Design and Comprehensive Evaluation Index" briefly described the optimization of the internal structure of a muffle...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F01N13/00
Inventor 周以齐薛源王丽
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com