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

Centrifugal fan volute employing granular damping vibration attenuation

A technology of centrifugal fan and particle damping, which is applied to components, mechanical equipment, machines/engines, etc. of elastic fluid pumping devices, which can solve the large vibration of the volute, affect the acoustic stealth of the ship, and affect the station personnel Problems such as work and rest, to achieve the effect of reducing radiation noise

Active Publication Date: 2015-06-03
SINOMACH +1
View PDF8 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The volute of the fan is a thin-walled container structure. The pressure pulsation formed by the interaction between the flow of the gas and the wall of the volute will cause the volute to generate large vibrations and radiate noise, which will affect the work and rest of the station personnel, reduce the service life of the equipment, and cause vibration. Transmitting to equipment mounting feet will affect the acoustic stealth of the ship

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
  • Centrifugal fan volute employing granular damping vibration attenuation
  • Centrifugal fan volute employing granular damping vibration attenuation
  • Centrifugal fan volute employing granular damping vibration attenuation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] See attached for typical centrifugal fan structure figure 1 , Its main components are: motor 7, impeller 8, volute 9 and air inlet 4. The impeller 9 is directly installed on the shaft extension end of the motor 8, the volute 10 is fixedly connected with the flange at the end of the motor, the inlet and outlet of the fan are connected with the air supply system pipe network, and the fan is connected with the mounting base through the motor feet.

[0019] See attached Figure 2a , 2b In this embodiment, the centrifugal fan volute includes a volute body, which is provided with an air inlet 4, and a centrifugal fan is conventionally arranged in the volute body. The centrifugal fan is driven by a motor. The volute body is composed of the inner volute 1 and The outer volute 2 is composed of a 50-60mm thickness damping and noise reduction chamber formed between the inner volute 1 and the outer volute 2. The chamber is provided with a filling port with a cover plate 5; the vibrati...

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 centrifugal fan volute employing granular damping vibration attenuation. The centrifugal fan volute comprises a volute body, wherein the volute body is provided with an air inlet (4); a centrifugal fan (7) is arranged in the volute body and is driven by a motor (8). The centrifugal fan volute is characterized in that the volute body consists of an inner volute (1) and an outer volute (2); a vibration attenuation and noise reduction chamber is formed between the inner volute (1) and the outer volute (2) and is filled with damping vibration attenuation granules (6). According to the centrifugal fan volute, the chamber between the inner volute and the outer volute is filled with spherical granules, the non-elastic collision and the friction between the granules and between each granule and the wall of the chamber are caused by the vibration of the inner volute, the energy is consumed, and the aim of vibration attenuation is achieved; meanwhile, the radiation noise of the volute can be reduced. The centrifugal fan volute can be applied to the industrial fields of energy power, petrochemical industry, petrochemical industry and the like, and the field of national defense and military industry.

Description

Technical field [0001] The invention relates to gas conveying equipment, and more specifically to a centrifugal fan volute which can be widely used in the fields of energy and power, petrochemical industry, metallurgy, national defense and the like. Background technique [0002] Centrifugal fan is a large-scale and wide-ranging mechanical equipment. It is widely used in energy and power, petrochemical, metallurgical and other industrial fields and various military ships, especially in the ventilation and air conditioning systems of various ships. Plays an extremely important role. The fan volute is a thin-walled container structure. The pressure pulsation formed by the interaction between the gas flow and the volute wall will cause the volute to produce greater vibration and radiate noise, which will affect the work and rest of the station personnel and reduce the service life of the equipment. Passing to the feet of the equipment installation will affect the ship's acoustic inv...

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): F04D29/42F04D29/66
CPCF04D29/4226F04D29/663F04D29/668
Inventor 徐建黄文俊常超牟洁洋潘永超胡四兵袁浩饶杰钱勇田奇勇朱晓农于跃平陈启明
Owner SINOMACH
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