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
CN101074683AInactive Publication Date: 2007-11-21QUANTA COMPUTER INC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QUANTA COMPUTER INC
Publication Date
2007-11-21
Estimated Expiration
Not applicable · inactive patent

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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.
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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

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