Compressor impeller for fuel cell air compressor

Abstract

The invention discloses a compressor impeller for a fuel cell air compressor, the gas compressor impeller is of an integrated structure and comprises compressor blades and a hub, and the compressor blades are uniformly distributed on the hub by taking the axis of the hub as the center. According to the compressor impeller for the fuel cell air compressor, the adopted blades are long blades and do not need to be matched with other small blades, vortex and backflow of air at the roots of the hub and the blades can be effectively reduced, and the efficiency of the compressor is improved. The overall performance of the impeller can be remarkably improved by improving the blades, the highest efficiency of a gas compressor is larger than 75% in a calibration state after the impeller is matched with a motor, the power consumption of a galvanic pile can be effectively reduced by improving the efficiency of the gas compressor impeller, and then the output net power of a fuel cell is effectively improved.

Description

technical field [0001] The invention relates to the field of fuel cell air compressors, in particular to a compressor impeller for fuel cell air compressors. Background technique [0002] The compressor impeller is one of the main components of the gas turbine engine, and its function is to add work to the flow through it to increase its pressure under the condition of low flow resistance loss. At present, the existing compressor impellers are mostly assembled from a wind deflector wheel and a compressor wheel. During installation, the blades of the wind guide wheel and the compressor wheel must be strictly aligned, which requires high machining accuracy of the wind guide wheel and the compressor wheel. And because the structure of the wind deflector wheel and the compressor wheel is relatively complicated, it is difficult to guarantee the machining accuracy, and at the same time, it is difficult to align the two during installation, so that there will often be a certain ga...

AI Technical Summary

Problems solved by technology

And because the structure of the wind deflector wheel and the compressor wheel is relatively complicated, it is difficult to guarantee the machining accuracy, and at the same time, it is difficult to align the two during installation, so that there will often be a certain gap and a certain misalignment at the joint part, which is easy to be combined. The vortex generated in the part increases the airflow resistance and reduces the efficiency of the compressor

In addition, when the efficiency of the compressor is low, when combined with the fuel cell, the stack of the fuel cell will be consumed and the net output power of the fuel cell will be reduced.

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