Centrifugal compressor and centrifugal unit having the same

US10323653B2 · kind B2 · utility

Assignee

• GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI · CN

Inventors

• Hongxing Wang · Hangzhou City, CN
• Zhiping Zhang · Longbeilingcun, CN
• Ruixing Zhong · Zhuhai, CN
• Nan Jiang · Tangxia, CN
• Rong Xie · Tangxia, CN
• Caiyun Jiang · Tangxia, CN
• Jianfei Liu · Riverview Drive, CN
• Yuhui Chen · Tangxia, CN

Key dates

• Filing date: Aug 5, 2014
• Grant date: Jun 18, 2019
• Expiry date: Oct 2, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F05D2250/52
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The invention discloses a centrifugal compressor. The centrifugal compressor includes multiple stages of compression units which are communicated in sequence. Each stage of compression unit includes a diffusion cavity (1) and a diffusion adjustment device, wherein the diffusion adjustment device includes a movable member (21) configured to change a radial flow area of the diffusion cavity (1) provided in correspondence thereto, the movable member (21) being movably provided in an axial direction of the centrifugal compressor. The invention also discloses a centrifugal unit having the centrifugal compressor. The movable member of each stage of compression unit of the centrifugal compressor changes the radial flow area of the diffusion cavity of this stage of compression unit, thereby effectively reducing the possibility of surging.