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AssigneeHitachi, Ltd.
InventorsShigeo Amagi, Osamu Koizumi
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The object of the present invention is to provide not only a highly reliable resin-molded stator not suffering insulation breakdown between the different phases of the stator coils even when the operation mode where the output of a rotary machine using a resin-molded stator in which a stator coil wound around a plurality of slots and a stator coil provided at the stator core end are resin-molded is to be increased from the level under a stopped status to the maximum achievable level within a short time is repeated, but also a method of manufacturing such a stator, and a rotary machine using the same. The present invention applies to a resin-molded stator comprising a stator core, electrically insulated stator coils wound around the plurality of slots or protrusions provided in the axial direction of the stator core, and molding resin with which are molded the stator core and the stator coils located at the aforementioned slots or protrusions and at the stator core end, wherein the resin-molded stator is characterized in that non-adhesive structure is established between the molding resin and at least one of the end faces of the stator core.
A resin-molded stator comprising
A method of manufacturing a resin-molded stator, characterized in that said manufacturing method sequentially comprises a process in which stator coils provided with insulation are to be wound around a stator core consisting of laminated electromagnetic steel plates, a process in which at least one of the end faces of said stator core is to be axially provided with a resin film or separator having the same shape as that of the vertical section of the stator core, a process in which the stator core provided with said stator coils is to be set in a mold, and a molding process in which said stator core and said stator coils are to be molded with resin by injecting the resin into said mold.
A method of manufacturing a resin-molded stator, characterized in that said manufacturing method sequentially comprises a process in which stator coils provided with insulation are to be wound around a stator core consisting of laminated electromagnetic steel plates, a process in which at least one of the end faces of said stator core is to be axially provided with a resin film or separator having the same shape as that of the vertical section of the stator core, a process in which the stator core provided with said stator coils is to be built into a housing, a process in which the housing having said stator core built thereinto is to be preheated and then set in a preheated mold, and a molding process in which said stator core and said stator coils are to be molded with resin by injecting the resin into the mold having said housing set therein.
Dependencies are inferred from the claim text.