公开(公告)号：US11286941B2

公开(公告)日：2022-03-29

申请号：US16711865

申请日：2019-12-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen Svarre ,  Jan Plougmann ,  Therkel Damm ,  Jan Carøe Aarestrup ,  Klaus Vestergaard Kragelund ,  Morten Liengaard Svarre

IPC: F04D13/06 ,  F04D29/043 ,  F04D29/046 ,  F04D29/42 ,  F04D29/58 ,  F04D29/62 ,  H05K5/02 ,  H05K5/03 ,  H05K7/20

Abstract: A pump assembly (1) includes a rotor axle (45) extending along a rotor axis (R), an impeller (12) fixed to the rotor axle (45), a pump housing (11) accommodating the impeller (12), and a drive motor with a stator (17) and a rotor (51). The rotor (51) is fixed to the rotor axle (45) for driving the impeller (12). A rotor can (57) accommodates the rotor (51). The rotor can (57) includes a rotor can flange (63). An electronics housing (13) has a cap (21) including a first material (139) forming a front face (19) of the cap (21). The front face (19) extends essentially perpendicular to the rotor axis (R). The first material (139) is at least partially overmolded with a second material (141) at an inner side of the cap (21). The second material (141) is more heat-conductive than the first material (139).

公开(公告)号：US11085462B2

公开(公告)日：2021-08-10

申请号：US16711923

申请日：2019-12-12

Applicant: GRUNDFOS HOLDING A/S

Inventor： Erik Bundesen Svarre ,  Jan Plougmann ,  Therkel Damm ,  Jan Carøe Aarestrup ,  Klaus Vestergaard Kragelund ,  Morten Liengaard Svarre

IPC: F04D29/62 ,  F04D29/043 ,  F04D29/42 ,  F04D13/06 ,  F04D25/06 ,  F04D29/12 ,  F04D29/046

Abstract: A pump assembly (1) includes a rotor axle (45) extending along a rotor axis (R), an impeller (12) fixed to the rotor axle (45), a pump housing (11) accommodating the impeller (12), and a drive motor including a stator (17) and a rotor (51). The rotor (51) is fixed to the rotor axle (45) for driving the impeller (12). A rotor can (57) accommodates the rotor (51). The rotor can (57) include a rotor can flange (63). A stator housing (13) accommodates the stator (17). The stator housing (13) is secured to the pump housing (11) by a bayonet ring (113). The bayonet ring (113) is resiliently spring-loaded for axially biasing the stator housing (13) towards the impeller (12) against the pump housing (11).