Heat dissipation fan

Abstract

The invention discloses a heat dissipation fan. A shell and a fan wheel located in the shell are included. The shell is provided with at least one air outlet and at least one air inlet, wherein the air inlets communicate with the fan wheel, and the fan wheel communicates with the air outlet. The shell comprises a cover plate, a base plate and a side wall located between the cover plate and the base plate. The side wall is located on the edges of the cover plate and the base plate. The upper side and the lower side of the side wall are connected with the cover plate and the base plate correspondingly. At least one side edge of the upper side edge and the lower side edge of the side wall is an inclined edge, and the inclination direction of the inclined edge gradually inclines towards the base plate or the cover plate in the flowing direction of gas in the shell. Through the design of the inclined edge of the side wall, the air inlet area is increased, and the heat dissipation efficiencyis improved; and through a snail-shell-shaped air runner, gas in the heat dissipation fan can better flow out of the air outlet, and the effect of noise lowering is achieved.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation, and in particular relates to a heat dissipation fan capable of increasing air intake and reducing noise. Background technique [0002] With the continuous development of electronic products, the working temperature of electronic products is also rising faster and faster. Therefore, the fans used to cool electronic products also need to continuously improve their heat dissipation performance to adapt to more demanding conditions. thermal environment. [0003] A blower fan disclosed in Chinese Patent Publication No. CN201381995Y includes a housing base, a fan wheel and a cover plate. The housing base has an accommodating space and an air outlet. The cover plate is arranged on the top of the housing base. The cover plate has an air inlet And at least one auxiliary air inlet, so that the outside air enters the accommodation space through the air inlet and the auxiliary air inlet at the same...

AI Technical Summary

Problems solved by technology

[0003] A blower fan disclosed in Chinese Patent Publication No. CN201381995Y includes a housing base, a fan wheel and a cover plate. The housing base has an accommodating space and an air outlet. The cover plate is arranged on the top of the housing base. The cover plate has an air inlet And at least one auxiliary air inlet, so that the outside air enters the accommodation space through the air inlet and the auxiliary air inlet at the same time. Although the air intake efficiency is improved to a certain extent, the air intake is still limited in the small space of electronic products, and With the accumulation of airflow at the air inlet, the pressure inside the blower fan increases, which increases the noise of the blower fan when it is working

Images