Single-screw machine for compressing and / or expanding a gas
By housing the central screw and star rotors within a sealed interior and using magnetic couplings and ceramic bearings, the single-screw machine addresses efficiency and maintenance issues, achieving reduced friction, contamination prevention, and quasi-isothermal operation for enhanced performance.
WO2025219469A1PCT designated stage Publication Date: 2025-10-23GREEN Y ENERGY AG
Patent Information
- Application Number
- PCT/EP2025/060541
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-04-19
- Filing Date
- 2025-04-16
- Publication Date
- 2025-10-23
Smart Images
Figure EP2025060541_23102025_PF_FP_ABST
Abstract
The invention relates to a single-screw machine comprising a housing (1) having a gas inlet (11), a gas outlet (12), and walls (13) that define an internal chamber (14). A central screw (2) and at least one star rotor (3) are accommodated in the internal chamber (14). The central screw (2) has a screw shaft (21) about which the central screw is rotatably mounted in the housing (1) by means of ceramic rolling bearings (22), and each star rotor (3) has a star-rotor shaft (31) about which it is rotatably mounted in the housing (1) by means of ceramic rolling bearings (32). The central screw (2) comprises a magnetic coupling (4) having a plurality of magnets (41) which are arranged around the screw shaft (21). The central screw (2) and the star rotors (3), together with the screw shaft (21), the star-rotor shafts (31), the ceramic rolling bearings (22, 32), and the magnetic coupling (4), are accommodated entirely within the common internal chamber (14).
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Citation Information
Patent Citations
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