Cooling of an electric motor
AssigneePunch Powertrain Psa E-Transmissions N.V.
InventorsAntonius Arnoldus Maria VAN DEURZEN, Paul Johannes Mathias MEERTS
Life of this patent
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Abstract
A spray disc is provided for a rotor assembly for an electric motor, comprising a spray disc body with an inner radius and an outer radius. The spray disc body comprises a first spray outlet and a second spray outlet, provided at or near the outer radius of the spray disc body and a spray disc conduit network, providing a fluid flow path between the inner radius of the spray disc body and the first and second spray outlets through the spray disc body, wherein the first spray outlet is axially offset from the second spray outlet. As such, a larger surface area of stator windings may be sprayed.
Claims14
Spray disc for a rotor assembly for an electric motor, comprising a spray disc body with an inner radius and an outer radius, which spray disc body comprises:
- a first spray outlet and a second spray outlet, provided at or near the outer radius of the spray disc body;
- and
- a spray disc conduit network, providing a fluid flow path between the inner radius of the spray disc body and the first spray outlet and the second spray outlet through the spray disc body;
- wherein the first spray outlet is axially offset from the second spray outlet.
A rotor assembly, comprising:
- a shaft with an outer circumference;
- a rotor body mounted around the shaft;
- and
- a spray disc according to any of the preceding claims, mounted around the shaft adjacent to a first side of the rotor body,
- wherein the shaft comprises a fluid flow channel having a shaft inlet at one end of the shaft, and at least one shaft outlet, wherein the at least one shaft outlet is positioned at a first side of the shaft corresponding to the first side of the rotor body, wherein the spray disc is positioned relative to the shaft such that the spray disc conduit network is in fluid connection with the at least one shaft outlet of the shaft fluid channel.
Dependencies are inferred from the claim text.