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

Centrifugal fan

A technology of centrifugal fans and fan blades, which is applied to non-variable pumps, non-volume pumps, components of pumping devices for elastic fluids, etc., can solve annoying narrow-band noise and other problems, and reduce narrow-band noise. noise effect

Inactive Publication Date: 2007-11-21
QUANTA COMPUTER INC
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in Figure 1, the vertical connection between the bracket 104 and the bearing seat 106 and the volute casing 102 will cause the high-speed traction airflow 100 to hit the bracket 104, thereby generating annoying narrow-frequency noise

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
  • Centrifugal fan
  • Centrifugal fan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] As mentioned above, the present invention provides a centrifugal fan, the outline of the bracket on the volute casing is formed by the involute obtained by taking the motor bearing base as the base circle. The blades of the fan adopt a backswept design, and the blades are vertically intersected with the outline of the bracket, so that the impact of the traction airflow caused by the blade rotation and the bracket is reduced, thereby reducing the narrow-frequency noise caused by it. The structure of the centrifugal fan will be described in detail below in conjunction with preferred embodiments.

[0025] Please refer to FIG. 2 , which shows a frame structure diagram of a centrifugal fan according to a preferred embodiment of the present invention. The volute casing 202 of the centrifugal fan 200 includes a driving device 212 (such as a motor) and a fan blade 108 . The driving device 212 is fixed on the back side of the bearing seat 106 in the figure (indicated by a dotte...

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 with a volute casing, including a drive install and vanes. There is a circle loading plate mounting on the volute casing by 2 supports at least. Drive installs are mounting on the loading plate. The outline of supports is an involute line. Fans and outline of supports are vertical overlap, which can make the collision of gas leaded in from the space of supports and the outline to the lowest level, then reduces narrow-band noise.

Description

technical field [0001] The invention relates to a centrifugal fan, in particular to a centrifugal fan with noise reduction function. Background technique [0002] As the computer responds to the market demand for thinner computers, it is no longer possible to reserve enough natural convection space inside the notebook computer casing for the space required by the heat dissipation design. Especially high-frequency components (such as central processing units and graphics chips) have faced considerable bottlenecks in the implementation of thermal design. Therefore, using a centrifugal fan to generate forced convection heat dissipation has become the main structure of the notebook computer heat dissipation mechanism. [0003] In the design of the fan, the characteristics of high static pressure and high speed generated by the volute casing of the centrifugal fan are used to overcome the problem of the narrow air convection in the notebook computer system. However, the charact...

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): F04D29/66F04D17/08F04D29/30
Inventor 曾俊发黄玉年
Owner QUANTA COMPUTER INC
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