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US 12,763,633 B2Granted
Casing for electric motor, electric motor comprising the casing and method for the production thereof
AssigneeFira S.P.A.
InventorRoberto Freddi
Life of this patent
Estimating the term…
Abstract
The casing for the electric motor is formed, at least partially, by a series of rings joined together, for example through braze welding. The rings have slots that, when the rings are installed and joined together, define one or more cooling channels for a coolant to flow. An electric motor is also disclosed, comprising a casing of this kind, as well as a method for producing the casing.
Claims29
A casing for an electric motor, the casing comprising
- a plurality of first rings, stacked over one another along a longitudinal axis of the casing and joined together to form a casing central body, inside which a space is defined for housing a rotor and a stator of the electric motor;
- wherein:
- each of the first rings comprises at least a first slot passing through the thickness of the respective first ring;
- the first rings are stacked over one another along the longitudinal axis, so that the first slots of the first rings form, in sequence, a first cooling channel extending along the longitudinal extension of the casing;
- and
- the first cooling channel is fluidly connected to an inlet connection and to an outlet connection for a coolant.
3 more elements
A method for producing a casing for an electric motor, the casing defining a space for housing a stator and a rotor of the electric motor, the method comprising the following steps:
- stacking a plurality of first rings over one another along a common longitudinal axis defining the axis of the casing;
- wherein each first ring comprises at least a first slot passing through the thickness of the respective first ring;
- and wherein the first rings are so angularly positioned with respect to one another that the first slots of the first rings form a first cooling channel extending along the longitudinal axis;
- and
- joining the first rings together forming a central body of the casing.
2 more elements
Dependencies are inferred from the claim text.