High-efficiency mixed flow compressor impeller

Abstract

The invention discloses a high-efficiency mixed flow compressor impeller which comprises a hub body and a plurality of blades combined with the hub body, wherein the hub body is fixed on the rotor shaft; the blades are mixed flow blades; a flow channel is formed between every two adjacent blades; and the distance between the outer edge of the blade and the center of the hub body is greater than the radius of the hub body, so that the outer edge of the blade forms an auxiliary mixed flow part. The blades of the high-efficiency mixed flow compressor impeller are mixed flow blades, and the distance between the outer edge of the blade and the center of the hub body is greater than the radius of the hub body; and thus, the invention obviously enhances the compressor efficiency by about 4%, and has the advantages of simple structure, easy production and high structural reliability.

Description

technical field [0001] The invention relates to a high-efficiency mixed-flow compressor impeller. Background technique [0002] As we all know, supercharging technology has been used in internal combustion engines for nearly a hundred years. Especially in recent years, with the situation of energy shortage and increasingly serious environmental pollution, supercharging technology has become a necessary technology in the field of internal combustion engines. At present, in my country's internal combustion engine industry, especially diesel engines, a large number of supercharged and supercharged intercooling technologies are used to meet the emission indicators and energy-saving targets at various stages introduced by the country. [0003] At present, turbochargers have been widely used in diesel engines, and the supercharging technology is becoming more and more mature. Various research institutes and colleges are working hard to improve and improve, the most important of wh...

AI Technical Summary

Problems solved by technology

The improvement of overall efficiency can make more effective use of exhaust gas energy, and provide high-pressure, low-temperature, high-quality gas medium to the gas engine. The most important way to improve the overall efficiency is to improve the efficiency of the compressor. The main goal is to improve the efficiency of the turbocharger. , two of the impellers are the core of the supercharger, and the turbine impeller already has a mixed flow impeller, which is widely used in most foreign markets and a small part of the domestic market, please refer to the illustration, figure 1 It is a sectional view of a traditional impeller. The traditional impeller includes a hub body 1a and a blade 1b combined with the body 1a. Through the mounting hole on the body 1a, the lock nut 1d fixes the entire impeller on the rotor shaft 1c, but The outer edge of the blade 1b of this type of impeller is aligned with the outer edge of the main body 1a. This type of impeller affects the efficiency of the compressor due to its blade shape and processing characteristics.

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