Internal gear pump

An internal gear pump is provided with: an inner rotor having a plurality of outer teeth; an outer rotor having a plurality of inner teeth meshing with the plurality of outer teeth; a housing that rotatably accommodates the inner rotor and the outer rotor; and an axial gap motor having a stator and a motor rotor, the outer rotor being the motor rotor, the housing including: a circumferential wall portion provided in a cylindrical shape so as to surround the outer periphery of the outer rotor; and a first cover part and a second cover part that close both end parts of the peripheral wall part, the first cover part being disposed between the stator and the outer rotor, and the second cover part being provided with a suction port and a discharge port that communicate with the inside of the housing. 一种内啮合齿轮泵，具备：内转子，具有多个外齿；外转子，具有与所述多个外齿啮合的多个内齿；壳体，以旋转自如的方式收容所述内转子及所述外转子；以及轴向间隙电机，具有定子及电机转子，所述外转子是所述电机转子，所述壳体具备：周壁部，以包围所述外转子的外周的方式设置为圆筒状；以及第一盖部及第二盖部，封闭所述周壁部的两端部，所述第一盖部配置于所述定子与所述外转子之间，所述第二盖部具备与所述壳体内连通的吸入端口及排出端口。