Axial flow fan device

Abstract

The invention discloses an axial-flow fan device, comprising a fan casing and a plurality of fan modules connected in series and arranged in the fan casing; wherein the fan module comprises: a flow guide part, the flow guide part is connected with the fan casing, And the guide member includes a fixed cylinder connected with the fan casing and a guide vane arranged in the fixed cylinder; an impeller, which corresponds to the guide vane and is located on the air inlet side of the guide vane; a disc motor is arranged on the guide vane. The disc motor includes a stator provided with windings, a rotor provided with permanent magnets, and an output shaft. There are two rotors, and the two rotors are respectively arranged on both sides of the stator. The output shaft is connected to the rotor. connected, and the output shaft is connected with the impeller. By arranging multiple sets of fan modules in the fan casing, the invention realizes the design parameter requirements by connecting multiple sets of fan modules in series, and utilizes the working principle of the disc motor to make the fan more miniaturized and reduce the space requirement.

Description

technical field [0001] The invention belongs to the technical field of fans, in particular to an axial flow fan device. Background technique [0002] At present, as a ventilation device, a fan is a widely used representative mechanical device that lifts the gas pressure and discharges the gas. The fan usually includes a casing and an impeller inside. The impeller is a rotating component and is fixed on the hub by a plurality of blades. Constructed above, the blades work in the fluid, and most fans are driven by column motors. [0003] In the traditional column motor structure, the stator is on the periphery and the rotor rotates in the middle, which makes the axial size of the column motor large; while the disc motor, also known as the butterfly motor, has the same working principle as the column motor, with a flat shape, The axial dimension is short and other characteristics, especially suitable for thin installation occasions. And the disc motor adopts an ironless armatu...

AI Technical Summary

Problems solved by technology

[0004] The air volume, air pressure and rotational speed of the traditional stand-alone fan are designed by a column motor to drive the impeller to rotate. In order to meet this design requirement, the size of the column motor is relatively large, which makes the size of the traditional fan too large and affects the use of space. The requirements are relatively large; and the impeller of the traditional single-stage fan has a large load in the working state, and this type of fan will generate a lot of noise when it is running.

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