| 摘要 |
A multi-stage rotary compressor is disclosed. It comprises a sealed housing, a first compressing element in said housing for compressing a gas to an intermediate pressure and, a second compressing element in said housing for compressing gas compressed to said intermediate pressure to a higher pressure. The housing is separated into first and second compression chambers respectively, the first compression element being located in said first compression chamber and the second compression element being located in said second compression chamber so that, when the compressor is in use, the first compression chamber is maintained at a pressure substantially equal to said intermediate pressure and the second pressure chamber is maintained at a pressure substantially equal to said higher pressure. |
