公开(公告)号：US20230332610A1

公开(公告)日：2023-10-19

申请号：US18337524

申请日：2023-06-20

Applicant: DEERE & COMPANY

Inventor： RONALD D. BREMNER

IPC: F04D25/16 ,  F04D25/08 ,  F04D29/58 ,  F04D29/053 ,  H02K5/128

CPC classification number: F04D25/166 ,  F04D25/082 ,  F04D29/5806 ,  F04D29/584 ,  F04D29/053 ,  H02K5/128 ,  B60Y2200/221

Abstract: An electric machine for a work vehicle including a housing, a stator assembly positioned inside the housing, and a rotor assembly rotatably connected to the housing via a bearing. The rotor assembly is positioned to form an air gap between the stator assembly and the rotor assembly. A front air dam is positioned at a first end of the housing and adjacent to the air gap. The front air dam includes an external barrier, an internal barrier, an opening in the internal barrier, and a passageway in the internal barrier. A fan is attached to the rotor assembly and positioned within the housing. The fan generates a first air flow towards the air gap and a second air flow through the passageway.

公开(公告)号：US20220275805A1

公开(公告)日：2022-09-01

申请号：US17647512

申请日：2022-01-10

Applicant: DEERE & COMPANY

Inventor： RONALD D. BREMNER

IPC: F04D25/08 ,  F04D29/58 ,  F04D29/053

Abstract: An electric machine for a work vehicle including a housing, a stator assembly positioned inside the housing, and a rotor assembly rotatably connected to the housing via a bearing. The rotor assembly is positioned to form an air gap between the stator assembly and the rotor assembly. A front air dam is positioned at a first end of the housing and adjacent to the air gap. The front air dam includes an external barrier, an internal barrier, an opening in the internal barrier, and a passageway in the internal barrier. A fan is attached to the rotor assembly and positioned within the housing. The fan generates a first air flow towards the air gap and a second air flow through the passageway.