Peristaltic hose pump

US9470221B2 · kind B2 · utility

Assignee

• W.O.M. WOLRD OF MEDICINE GMBH · DE

Inventors

• Thomas Merzhauser · Berlin, DE
• Joachim Sasse
• Stefan Kurbis · Teltow, DE
• Peter Zentner · Berlin, DE
• Heinz Hemesath · Berlin, DE

Key dates

• Filing date: Jan 5, 2015
• Grant date: Oct 18, 2016
• Expiry date: Jan 5, 2035

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F04B2205/09
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A method for generating a flow by a peristaltic hose pump, a generated fluid pressure being limited to 500 mbar and being achieved and maintained without a pressure measurement during operation of the pump. A length of a flexible and elastic pump segment of a hose is adjusted such that, while a roller wheel is stationary, and while the segment is guided under tension around the roller wheel, and when applying a fluid pressure in the range from 10 to 400 mbar to one end of the pump segment, a backflow leakage in the opposite direction to the direction of rotation of the roller wheel is created, and a flow of the fluid of at least 0.01 l/min through the pump segment is obtained, taking into account the backflow leakage. The distance of fixing points of each end of the pump segment to the roller wheel rotation axis is fixed.