US 12,392,349 B2
Electric motor with cooling arrangement
Jochen Fritz, Frankenthal (DE); Christoph Jaeger, Frankenthal (DE); Toni Klemm, Frankenthal (DE); and Matthias Mohr, Frankenthal (DE)
Assigned to KSB SE & Co. KGaA, Frankenthal (DE)
Appl. No. 18/285,038
Filed by KSB SE & Co. KGaA, Frankenthal (DE)
PCT Filed Mar. 28, 2022, PCT No. PCT/EP2022/058086
§ 371(c)(1), (2) Date Sep. 29, 2023,
PCT Pub. No. WO2022/207545, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 10 2021 108 359.1 (DE), filed on Apr. 1, 2021.
Prior Publication US 2024/0191718 A1, Jun. 13, 2024
Int. Cl. F04D 25/08 (2006.01); F04D 17/08 (2006.01); F04D 29/28 (2006.01); F04D 29/44 (2006.01); F04D 29/58 (2006.01); H02K 9/06 (2006.01)
CPC F04D 25/082 (2013.01) [F04D 17/08 (2013.01); F04D 29/441 (2013.01); F04D 29/5806 (2013.01); F04D 29/5813 (2013.01); H02K 9/06 (2013.01); F04D 29/281 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electric motor configured to drive a centrifugal pump, comprising:
a cooling arrangement which comprises a fan impeller and a shroud, wherein
the shroud encloses a space around the fan impeller,
guide elements are arranged in the space,
the guide elements are formed integrally as a single piece with the shroud,
the guide elements extend radially from different curved surfaces of the shroud in the direction of a rotor shaft and,
the guide elements have an increasing radius of curvature, which increases counter to a direction of rotation of the fan impeller.