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

Muffler for air inlet of axial flow fan

A technology of axial flow fan and air inlet, which is applied in the direction of machines/engines, mechanical equipment, liquid fuel engines, etc., can solve the problems of large air inlet muffler, large noise of axial flow fan, general noise reduction effect, etc., and achieve noise reduction Remarkable effect, reduce wind resistance, reduce noise radiation pollution

Active Publication Date: 2018-07-17
INST OF ACOUSTICS CHINESE ACAD OF SCI
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the axial flow fan is noisy, the wind speed is fast, and there are few noise reduction solutions, and the muffler at the air inlet has a large volume, is difficult to fix, has a large flow resistance, and the noise reduction effect is average, so it is difficult to meet the requirements.

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
  • Muffler for air inlet of axial flow fan
  • Muffler for air inlet of axial flow fan
  • Muffler for air inlet of axial flow fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings.

[0033] Such as figure 1 with 2 As shown, the present invention provides a muffler for the air inlet of an axial flow fan, which is a cylindrical annular array structure as a whole, and is connected to the air inlet of the axial flow fan, including: a first mounting frame 1, a second mounting frame 8, and a connecting plate 2. Fastening ring 3, cylindrical shell 4, 7 filters 5, 7 muffler boxes 6 and 6 muffler guide inserts 7; the left end face of the cylindrical shell 4 is provided with an end face flange , a round hole is opened in the middle, and it is used as an air inlet channel; the first mounting frame 1 and the second mounting frame 8 are placed oppositely, and the two are connected by the connecting plate 2 to form a ring structure, And sleeved on the outer peripheral wall of the cylindrical shell 4, further fastened by the fastening ring 3; on the outer perip...

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 provides a muffler for an air inlet of an axial flow fan. The muffler comprises a first mounting frame (1), a second mounting frame (8), a connecting plate (2), a fastening ring (3), a cylindrical shell (4), a plurality of filters (5), a plurality of silence chambers (6), a plurality of silencing and flow guiding inserting pieces (7) and a conical sound absorbing layer (10). A circular hole is formed in the middle of one end of the cylindrical shell (4). The first mounting frame (1) and the second mounting frame (8) are placed oppositely, are connected through the connecting plate (2) to form an annular structure, and are further fastened through the fastening ring (3). A plurality of rectangular openings with the same size are symmetrically formed in the peripheral wall of the cylindrical shell (4) to be used as air inlets, one silence chamber is mounted at each rectangular opening, and one filter (5) is mounted on each silence chamber (6).The conical sound absorbing layer (10) is mounted at the other end of the cylindrical shell (4).

Description

technical field [0001] The invention relates to the field of muffler equipment, in particular to a muffler for an air inlet of an axial flow fan. Background technique [0002] In recent years, with the rapid development of social economy, noise pollution has attracted more and more attention. Working in high-noise industrial places for a long time, the staff will have auditory fatigue, headache, tinnitus and other symptoms, and severe cases may even lose their hearing; therefore, noise control in industrial places is becoming more and more important. [0003] At present, the axial flow fan mainly uses an air inlet muffler at the air inlet to reduce noise. However, the axial flow fan is noisy, the wind speed is fast, and there are few noise reduction solutions, and the muffler at the air inlet is large in size, difficult to fix, large in flow resistance, and the noise reduction effect is average, making it difficult to meet the requirements. Contents of the invention [0...

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 Applications(China)
IPC IPC(8): F04D29/66F04D29/70
CPCF04D29/663F04D29/664F04D29/703
Inventor 张纯王文彬巩杨军程晓斌吕亚东
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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