US 12,429,057 B2
Pump
Kosei Ozaki, Kyoto (JP); and Takaaki Bando, Kyoto (JP)
Assigned to NIDEC CORPORATION, Kyoto (JP)
Filed by Nidec Corporation, Kyoto (JP)
Filed on Aug. 25, 2023, as Appl. No. 18/237,964.
Claims priority of application No. 2022-134692 (JP), filed on Aug. 26, 2022.
Prior Publication US 2024/0068479 A1, Feb. 29, 2024
Int. Cl. F04D 13/06 (2006.01); H02K 5/04 (2006.01); F04D 1/00 (2006.01)
CPC F04D 13/0626 (2013.01) [F04D 13/0606 (2013.01); F04D 13/0633 (2013.01); F04D 13/064 (2013.01); H02K 5/04 (2013.01); F04D 1/00 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A pump comprising:
an upper casing including a suction port portion through which a fluid is suctioned and a discharge port portion through which the fluid is discharged;
a lower casing located below the upper casing;
a can accommodated in the lower casing;
an impeller accommodated in the upper casing; and
a motor including a rotor and a stator connected to the impeller; wherein
the rotor is accommodated in the can;
the stator is located between an inner peripheral surface of the lower casing and an outer peripheral surface of the can;
the can includes a protruding portion protruding in a radial direction from the outer peripheral surface of the can;
the stator includes an annular body and stator teeth;
the stator teeth include a winding portion protruding in a radial direction from an inner peripheral surface of the annular body, and a distal end portion located at a radially innermost end of the winding portion; and
a lower end surface of the protruding portion and an upper end surface of the distal end portion are in contact with each other.