公开(公告)号：US20250052246A1

公开(公告)日：2025-02-13

申请号：US18719406

申请日：2022-12-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Troels JEPSEN ,  Brian LUNDSTED POULSEN

IPC: F04D13/06 ,  F04D1/00 ,  F04D29/044 ,  F04D29/10 ,  F04D29/42

Abstract: A pump assembly includes an electric drive motor with a motor drive shaft and a rotor. The motor drive shaft extends along a rotor axis and the rotor is mechanically coupled to the motor drive shaft. A pump housing encloses an impeller that is mechanically coupled to a pump drive shaft. The pump drive shaft extends along the rotor axis. The motor drive shaft is releasably coupled to the pump drive shaft by a drive shaft coupling for transferring torque from the motor drive shaft to the pump drive shaft. The drive shaft coupling is arranged within the motor drive shaft for transferring torque from the motor drive shaft to the pump drive shaft by frictional connection. The drive shaft coupling is accessible by an elongate tool through the second axial hollow motor drive shaft drive end for selectively tightening and releasing the drive shaft coupling.

公开(公告)号：US20250052245A1

公开(公告)日：2025-02-13

申请号：US18718882

申请日：2022-12-02

Applicant: GRUNDFOS HOLDING A/S

Inventor： Steen MIKKELSEN ,  Troels JEPSEN ,  Keld Folsach RASMUSSEN ,  Kristian CHRISTOFFERSEN

IPC: F04D13/06 ,  F04D1/00 ,  F04D29/42 ,  F04D29/58 ,  H02K5/18 ,  H02K9/19 ,  H02K11/33

Abstract: An integrated electric motor drive. The motor drive having rotatable parts with a drive shaft and a rotor, wherein the drive shaft extends along a rotor axis and the rotor is mechanically coupled to the drive shaft; and static parts having a stator and power electronics for controlling an electric current through the stator. The integrated electric motor drive has a liquid cooling system with a closed liquid cooling circuit and a liquid coolant agitator. The closed liquid cooling circuit is filled with liquid coolant being in thermal contact with the stator and/or the power electronics. The liquid coolant agitator is arranged and configured to circulate the liquid coolant along the closed liquid cooling circuit. The liquid coolant agitator is mounted within the closed liquid cooling circuit to be rotatable about the rotor axis, and the liquid coolant agitator is magnetically coupled to the movable parts.