Internal gear pump

Abstract

An internal gear pump comprises an inner rotor including a plurality of external teeth, an outer rotor including a plurality of internal teeth engaging with the plurality of external teeth, a housing rotatably housing the inner rotor and the outer rotor, and an axial gap motor including a stator and a motor rotor. The outer rotor is the motor rotor. The housing includes a peripheral wall portion provided in a cylindrical form so as to surround an outer periphery of the outer rotor, and a first cover portion and a second cover portion each covering a corresponding one of two end portions of the peripheral wall portion. The first cover portion is disposed between the stator and the outer rotor. The second cover portion has a suction port and a discharge port that communicate with an inside of the housing.

Dependencies are inferred from the claim text.