Energy-saving straight wall front and rear disc variable curvature curve element ternary impeller and centrifugal fan using the impeller

Abstract

An energy-saving straight-wall front and rear disc variable curvature curve element ternary impeller, including front disc, blade, rear disc and shaft disc, the front disc and the rear disc are both straight wall structures, and the blade is a variable curvature curve element ternary twist. The blades, that is, the front and rear discs of the fan impeller still use the traditional fan straight wall structure, and the original binary blades are replaced by ternary blades with variable curvature curve elements. The blade force exerted by the blades on the airflow can properly balance the centrifugal inertial force when the airflow changes from the axial direction to the radial direction, thereby weakening the drastic change of the airflow speed at the inlet; the present invention also requires protection of the centrifugal fan using the ternary impeller The present invention eliminates the adverse effect of small radius turning inertial force through the variable curvature curve element ternary impeller blade force, adopts the traditional structure of the straight wall front and rear disks, and designs the straight wall front and rear disk variable curvature curve element ternary impeller, The energy-saving effect of the three-element impeller of the fan is realized.

Description

technical field [0001] The invention belongs to the technical field of radial and mixed-flow turbine machinery, and relates to centrifugal fans, blowers, compressors and other equipment, in particular to an energy-saving straight-wall front and rear disc variable curvature curve element ternary impeller and a device using the impeller. Centrifugal fans (ventilators, blowers, compressors). Background technique [0002] Since my country's Professor Wu Zhonghua published the "General Theory of Subsonic and Supersonic Ternary Flows for Axial, Runoff and Francis Turbine Machinery" in the United States in the 1950s, with the rapid development of computer technology, three aspects in the field of high-end energy equipment have emerged. Yuan flow turbomachinery is widely used. At present, the linear element ternary impeller of American NREC is widely used in the field of diameter and hybrid turbomachinery at home and abroad, mainly including front disc 1, blade 2, rear disc 3, volut...

AI Technical Summary

Problems solved by technology

This straight-wall front and rear disc structure greatly limits the application of linear element ternary impellers in the field of low-end fans. Only traditional binary blades with curved blades in the flow direction and non-twisted height directions can be used ( Figure 4 )

Due to the large volume and wide range of such low-end fans, it has caused a lot of energy waste in the country

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