centrifugal compressor
The centrifugal compressor's secondary flow path with a throttle and aligned fins enhances efficiency in low and high flow rates by minimizing surge and flow losses, expanding its operational range.
JP7740529B2Active Publication Date: 2025-09-17IHI CORP
Patent Information
- Application Number
- JP2024516087
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-04-22
- Filing Date
- 2022-12-26
- Publication Date
- 2025-09-17
- Estimated Expiration
- 2042-12-26
AI Technical Summary
Technical Problem
Centrifugal compressors face efficiency challenges in the low flow rate region due to surge, which limits their operating range.
Method used
A centrifugal compressor design featuring a secondary flow path with a throttle portion and fins that narrows towards its first end, allowing air to be stored temporarily, reducing flow rate and pressure loss, and includes fins aligned with the impeller's leading edge to minimize interference.
Benefits of technology
Improves efficiency in both low and high flow rate regions by reducing surge effects and flow losses, expanding the operating range.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
A centrifugal compressor 100 is provided with an impeller 3, and a housing 6 that accommodates the impeller 3. The housing 6 includes a main flow path 20 that accommodates the impeller 3, and a sub-flow path 30 that surrounds the main flow path 20 in a cross section perpendicular to an axial direction of the impeller 3. The sub-flow path 30 includes, in the flow of air inside the main flow path 20, a first end 30A that opens to the main flow path 20 at a position upstream of the impeller 3, and a second end 30B that opens to the main flow path 20 at a position downstream of the first end 30A. The first end 30A opens to the main flow path 20 in the direction opposite to the impeller 3 in the axial direction of the impeller 3, and the sub-flow path 30 is continuous with the first end 30A and includes a narrowed part 30C narrowed toward the first end 30A.
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Citation Information
Patent Citations
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