Flow-mixing fan with sine type meridional flow channels

Abstract

The invention provides a flow-mixing fan with sine type meridional flow channels. The flow-mixing fan with the sine type meridional flow channels comprises a motor, a machine case, an impeller, guidevanes and a flow collector. The guide vanes are coaxially and fixedly arranged on the inner side of one end of the machine case. The motor is arranged in the center of wheel hubs of the guide vanes. The output shaft of the motor is fixedly connected with the center of the impeller. The flow collector is arranged on the inner side of the other end of the machine case. The flow collector and the impeller are on the same side. The wheel hubs of the guide vanes and wheel hub of the impeller share the same diameter. According to the flow-mixing fan with the sine type meridional flow channels, the scheme is reasonable, and the structure is simple and easy to achieve; full play can be given to advantages of the flow-mixing fan; and in addition, the fan structure is compact, the air volume is large, noise is little, and static pressure efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of mixed-flow fans, in particular to a mixed-flow fan with a sinusoidal meridian channel. Background technique [0002] Mixed flow fans are widely used in mining, textile, metallurgy, power station, aviation, construction and other industries. The mixed flow fan combines the advantages of the axial flow fan and the centrifugal fan, and has a high pressure coefficient and flow coefficient. The air in the mixed-flow fan is both centrifugal and axial. Due to its unique structural characteristics, the interior is full of complex secondary flows. [0003] The mixed flow fan adopts axial air intake, and the flow direction in the impeller changes to an oblique upward flow. After flowing out of the impeller, it needs to be changed to axially enter the rear guide vane or radially enter the volute. [0004] The mixed flow fan in the form of a rear volute is similar to the centrifugal fan, and the direction of the ai...

AI Technical Summary

Problems solved by technology

For high-pressure mixed-flow fans with a large change in the diameter of the impeller inlet and outlet, the arc-shaped case line and the hub line exit are axial, so the angle between the inlet and the shaft is relatively large, and after the airflow flows into the impeller, it is easy to form a low-speed vortex area in the case , weaken the impeller's ability to work

[0008] According to the ternary flow theory, the meridional shape of the impeller that is more in line with the actual flow can be designed, but the calculation is complicated and the calculation amount is large

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