公开(公告)号：US20230012331A1

公开(公告)日：2023-01-12

申请号：US17858072

申请日：2022-07-06

Applicant: NIDEC TOSOK CORPORATION

Inventor： Yoshiyuki SHIZUKU ,  Shigehiro KATAOKA ,  Takanobu YAHATA ,  Thao LETHITHANH ,  Nguyen Thi Thanh TAM

IPC: H02K1/16 ,  H02K1/22 ,  H02K5/08 ,  H02K7/14 ,  F04C2/10

Abstract: One aspect of a pump of the present invention includes a rotor rotatable about a central axis, a stator assembly located radially outside the rotor and surrounding the rotor, a pump unit connected to a first side in an axial direction of the rotor, a support member including a rotor accommodating portion, the rotor accommodating portion being located radially inside the stator assembly and accommodates the rotor therein, and a resin housing in which the stator assembly and the support member are molded. The rotor accommodating portion includes a lid portion that covers the rotor from a second side in the axial direction, and a tubular portion that is located between the rotor and the stator assembly in a radial direction and is open to the first side in the axial direction. The stator assembly includes a stator core having an annular shape, a plurality of coils mounted on the stator core, and a stator cover that covers the plurality of coils.

公开(公告)号：US20220307499A1

公开(公告)日：2022-09-29

申请号：US17697928

申请日：2022-03-18

Applicant: NIDEC TOSOK CORPORATION

Inventor： Nan WU ,  Nguyen Thi Thanh TAM

IPC: F04C15/06 ,  F04C2/107 ,  F04C15/00

Abstract: An electric pump includes a motor unit rotationally driving a drive shaft, and a pump unit. The pump unit includes a pump rotor that sends the fluid by a driving force of the driving shaft, and a pump housing that covers at least one side of the pump rotor. The pump housing includes an attachment surface extending in the axial direction and in contact with an attached body, first and second flow paths respectively on the suction side and the discharge side, and a partition wall positioned between pump-side openings of the first flow path and the second flow path facing the pump rotor, and extends in a direction along the attachment surface, and locations of attachment-side openings of the first flow path and the second flow path on the attachment surface are displaced from each other on the attachment surface in the axial direction.

公开(公告)号：US20220307496A1

公开(公告)日：2022-09-29

申请号：US17694669

申请日：2022-03-15

Applicant: NIDEC TOSOK CORPORATION

Inventor： Nan WU ,  Tomohiro SAKATA ,  Nguyen Thi Thanh TAM

IPC: F04C2/10

Abstract: An electric pump includes a motor unit rotationally driving a drive shaft, and a pump unit. The pump unit includes a pump rotor that sends the fluid by a driving force of the driving shaft, and a pump housing that surrounds at least one side of the pump rotor. The pump housing includes an attachment surface extending in the axial direction and in contact with an attached body, first and second flow paths respectively on the suction side and the discharge side, and a fixing location within the attachment surface and fixed to the attached body by a fixing member within a maximum outer shape of the motor housing as viewed in the axial direction. Opening locations of the first and second flow paths are displaced from each other in the axial direction on the attachment surface.