Rotor structure of inscribed gear pump

• Main Authors: KIMURA ICHIRO, KUROKAWA HIROYUKI
• Format: Patent
• Language: English
• Published: 30.03.2006
• Subjects: BLASTING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

An inscribed gear rotor includes a housing forming a cylindrical space, a driven rotor including a plurality of inner gears, a driving rotor including a plurality of outer gears engaging with the respective inner gears, a plurality of interspaces formed between the inner gears of the driven rotor and the outer gears of the driving rotor respectively, a volume of each of the interspaces being increased and decreased so as to complete one cycle in a rotation for the purposes of performing an intake and a discharge of fluid, an inlet port being in communication with the cylindrical space, an outlet port being in communication with the cylindrical space, and a groove formed on a side face of the driving rotor and being in communication with the inlet port and the at least one of the interspace.