Integrated axial-flow fan

Abstract

The invention provides an integrated axial-flow fan. The integrated axial-flow fan comprises a machine shell, a motor and an impeller, wherein the machine shell comprises an inner air duct, an outer air duct and guide vanes; the inner air duct and the outer air duct are coaxially arranged in a sleeved mode and connected through the guide vanes; an air flow channel is formed between the inner air duct and the outer air duct; the motor is arranged on the inner air duct and coaxial with the inner air duct; an output shaft of the motor is connected with the impeller; and the maximum rotating speedof the motor is 8800r / min. According to the integrated axial-flow fan, the air flow channel is formed between the inner air duct and the outer air duct, the motor is installed in the inner air duct,heat generated by the motor can be directly transferred onto the guide vanes through the inner air duct, and therefore forced air cooling is carried out on the guide vanes through air flow in the working process of the fan, and the problem that the temperature rise of the motor is sharply increased due to a high unit-volume heat load and a small heat dissipation area of the high-speed motor is solved.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to an integrated axial flow fan. Background technique [0002] The fan is an indispensable and important component in the industry. For the ventilation and cooling fields, the flow and pressure of the fan are the key performance parameters of the fan. The main factors affecting these two parameters are the speed of the driving motor and the effective area of ​​the impeller blades. In the same Under the high pressure and flow rate, increasing the speed of the drive motor can reduce the effective area of ​​the impeller and reduce the diameter of the impeller, thereby reducing the volume and quality of the fan. [0003] In the current technical means, increasing the power supply frequency of the motor can increase the motor speed and achieve the effect of reducing the volume and quality of the fan, but increasing the frequency of the motor will cause serious heating of the iron core. Ever...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated axial flow fan, aiming to solve the problems in the prior art that the volume and quality of the fan are reduced by using a high-speed motor, resulting in serious heating of the motor and poor heat dissipation effect. The specific technical solution is as follows:

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