Cooling fan and electronic equipment

Abstract

The embodiment of the invention provides a cooling fan and electronic equipment. The cooling fan comprises a shell body, wherein the shell body comprises a top plate and a bottom plate which are oppositely arranged, and a side plate arranged between the top plate and the bottom plate in a surrounding mode, the top plate, the bottom plate and the side plate surround and form an inner cavity of theshell body, an impeller is arranged in the inner cavity, and all or part of at least one of the top plate and the bottom plate is composed of a sound absorption plate; and the sound absorption plate comprises a first plate body and a second plate body which are oppositely arranged, a plurality of silencing cavities which are arranged at intervals are arranged between the first plate body and the second plate body, the first plate body is close to the inner cavity, and a plurality of through holes communicating with the silencing cavities are formed in the first plate body. According to the cooling fan, through a sound absorption structure formed by the through holes and the silencing cavities on the sound absorption plate, noise can be effectively absorbed, the noise of the cooling fan canbe remarkably reduced, an air inlet and an air outlet of the cooling fan do not need to be shielded, and the problem that the noise and flows cannot be balanced can be solved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electronic equipment, and in particular, relate to a cooling fan and electronic equipment. Background technique [0002] There is a problem of heat generation in the operation of electronic equipment, and cooling fans are usually used to dissipate heat, but noise will be generated during the operation of the cooling fan. In order to make the noise of the cooling fan meet the standard, in the prior art, the size of the air inlet of the cooling fan is usually controlled , reduce the fan speed, and optimize the design of the blade shape to reduce noise. [0003] However, the design process of controlling the size of the air inlet of the cooling fan requires repeated tests to optimize the fan noise, which consumes a lot of manpower, cost and time in the research and development process. And blocking the air inlet will affect the cooling performance of the fan. The method of reducing th...

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Problems solved by technology

[0003] However, the way to control the size of the air inlet of the cooling fan requires repeated tests in the design process to optimize the fan noise, which consumes a lot of manpower, cost and time in the research and development process

And blocking the air inlet will affect the heat dissipation performance of the fan

The method of reducing the fan speed will significantly reduce the flow of air, and there is a risk of affecting system performance

The way to optimize the design of the blade shape must pass repeated trial production verification, the development time is long, and the research and development cost is relatively high

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