| 摘要 |
The invention relates to an air-cooled electric motor, in particular a linear motor, whereby a modular block, comprising a winding body (10) and windings (20) mounted thereon, is contained in a sealed housing (50). Cooling air is introduced into the housing through an air inlet (52) and flows around windings (20) therein and is directed towards tooth gaps in the winding body (10) in the vicinity of the windings. An efficient cooling of the heat-generating regions of the primary piece is thus produced. Furthermore, a method for production of the primary piece is disclosed, in which a housing is coated with a sealing mass, the modular block is at least partially embedded in the sealing mass and the housing sealed with a cover, similarly coated with a layer of sealing mass on the surface thereof facing the housing interior. In an alternative method the winding region of the winding body is embedded in a first moulding mass. The winding body with the first moulding mass is then embedded in a second moulding mass which has a higher melting point than the first moulding mass. The body thus formed is then heated sufficiently for the first moulded mass to melt and be drawn off from inside the second moulded mass. The cavities produced thus form gas inlets and outlets and gas flow paths for air cooling the interior of the primary piece. |
