Flow machine for an aggressive, radioactive or special-purity flow medium

US3938913A · kind A · utility

Assignee

• Maschinenfabrik Augsburg-Nurnberg · DE

Inventors

• Gerhard Isenberg · Cologne, DE
• Peter Bloch
• Wolfgang Tuzinsky

Key dates

• Filing date: Dec 20, 1972
• Grant date: Feb 17, 1976
• Expiry date: Dec 20, 1992

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/44
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A flow machine for pumping and/or measuring the flow of agressive, radioactive, or special-purity flow mediums. The flow machine is provided with a rotatable impeller magnetically supported within a machine casing such that the impeller is spaced at all points from the inside walls of the machine casing. The casing inside walls and the outer configuration of the impeller include a central cylindrical center section joined by conically outwardly flared end sections. Electromagnetics are arranged in the conical flared section outside of the inside wall for cooperation with magnetic material arranged in the corresponding conically flared sections of the impeller to support the impeller in position. The conically flared section facilitate both radial and axial support of the impeller, since both axial and radial components of electromagnetic force is experienced at the conically flared sections of the impeller. Means are provided to detect the gaps around the circumference of the impeller between the impeller and the casing inside walls, which means provide signals to an electronic device for controlling the respective current supply to the electromagnets so as to assure the maintenanc…