A turbocharger compressor wheel structure having a sparse S-type vaned diffuser

By designing a turbocharger compressor housing structure with sparse S-shaped blade diffusers, the problem of low boosting efficiency in small turbochargers is solved, achieving a compact structure and high-efficiency boosting effect, suitable for both small and large turbochargers.

CN116464669BActive Publication Date: 2025-10-24TIANJIN NORTH TIANLI PRESSURIZATION TECH CO LTD
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Patent Information

Application Number
CN202310355909.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-04-04
Publication Date
2025-10-24
Estimated Expiration
2043-04-04

AI Technical Summary

Technical Problem

Existing small turbochargers have limited boosting efficiency, and traditional blade diffusers have complex layouts, high density, and narrow flow ranges, making it difficult to meet user needs.

Method used

Design a turbocharger compressor housing structure with a sparse S-shaped blade diffuser, including a hollow compressor volute, a diffuser channel and an annular channel. Sparse S-shaped blades are arranged inside the diffuser channel. The blades are sparse and do not overlap in the circumference. The mid-arc of the blades is defined by a third-order Bezier spline curve.

Benefits of technology

It improves the boosting efficiency and flow range of small turbochargers, has a compact structure, excellent performance, and is suitable for the design of both small and large turbochargers.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a turbocharger compressor casing structure with sparse S-shaped blade diffuser, which comprises a hollow compressor volute; a diffuser channel is arranged on the compressor volute; the diffuser channel comprises a diffuser channel and an annular channel; the diffuser channel is arranged on the inner side of the annular channel; the annular channel is arranged in a peripheral annular mode outside the diffuser channel; the diffuser channel is a structure penetrating from front to back; the inner side of the diffuser channel is provided with air inlets arranged in a surrounding mode and used for sucking air from the external environment; the inner side space of the diffuser channel is provided with a compressor impeller; the channel wall surface of the diffuser channel is provided with a plurality of diffuser blades in a surrounding mode; and the plurality of diffuser blades satisfy preset sparse S-shaped blade diffuser structure characteristics. The turbocharger compressor casing structure with the sparse S-shaped blade diffuser has scientific design, sparse S-shaped blade diffuser structure characteristics, compact structure, excellent performance and can significantly improve the supercharging efficiency.
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