GeroMAG: In-House Prototype of an Innovative Sealed, Compact and Non-Shaft-Driven Gerotor Pump with Magnetically-Driving Outer Rotor

Pedro Javier Gamez-Montero, Robert Castilla, Esteve Codina, Javier Freire, Joan Morató, Enric Sanchez-Casas and Ivan Flotats
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Pedro Javier Gamez-Montero: Laboratori de Sistemes Oleohidraulics i Pneumatics, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Campus Terrassa, Colom 11, 08222 Terrassa, Spain
Robert Castilla: Laboratori de Sistemes Oleohidraulics i Pneumatics, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Campus Terrassa, Colom 11, 08222 Terrassa, Spain
Esteve Codina: Laboratori de Sistemes Oleohidraulics i Pneumatics, Department of Fluid Mechanics, Universitat Politecnica de Catalunya, Campus Terrassa, Colom 11, 08222 Terrassa, Spain
Javier Freire: Laboratori de Sistemes Oleohidraulics i Pneumatics, Mechanical Engineering Department, Universitat Politecnica de Catalunya, Campus Terrassa, Colom 11, 08222 Terrassa, Spain
Joan Morató: Aleaciones de Metales Sinterizados, Carretera Nacional 340 km 1242, Les Fallulles, 08620 Sant Vicenç dels Horts, Spain
Enric Sanchez-Casas: Aleaciones de Metales Sinterizados, Carretera Nacional 340 km 1242, Les Fallulles, 08620 Sant Vicenç dels Horts, Spain
Ivan Flotats: Mavilor Motors, Empordà 11-13, Can Bernades-Sobirà, 08130 Santa Perpetua de Mogoda, Spain

Energies, 2017, vol. 10, issue 4, 1-14

Abstract: The technology of gerotor pumps is progressing towards cutting-edge applications in emerging sectors, which are more demanding for pump performance. Moreover, recent environmental standards are heading towards leakage-free and noiseless hydraulic systems. Hence, in order to respond to these demands, this study, which will be referred to as the GeroMAG concept, aims to make a leap from the standard gerotor pump technology: a sealed, compact, non-shaft-driven gerotor pump with a magnetically-driving outer rotor. The GeroMAG pump is conceived as a variable-flow pump to accomplish a standard volumetric flow rate at low rotational speed with satisfactory volumetric efficiency. By following the authors’ methodology based on a catalogue of best-practice rules, a custom trochoidal gear set is designed. Then, two main technological challenges are encountered: how to generate the rotational movement of the driving outer rotor and how to produce the guide of rotation of the gear set once there is no drive shaft. To confront them, a quiet magnet brushless motor powers the driving outer rotor through pole pieces placed in its external sideway and the rotational movement is guided by the inner edgewise pads carved on it. Subsequently, GeroMAG pump architecture, prototype, housing, methodology, materials and manufacture will be presented. As a principal conclusion, the GeroMAG proof of concept and pump prototype are feasible, which is corroborated by experimental results and performance indexes.

Keywords: trochoidal-gear; pump configuration; control design; performance modeling; manufacturing; magnetic driving; electromagnetic assembly; fluid power (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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