Producing a hermetic electric compressor

摘要

In producing a hermetic electric compressor for a refrigerating or air-conditioning apparatus using a refrigerant having a hydrofluorocarbon base, a solventless varnish comprising a thermosetting resin having at least two (meth)acryloyl groups in one molecule, a low-viscosity vinyl or 1-alkylvinyl monomer having an ether or ester linkage as a reactive diluent and an organic peroxide as a reaction initiator is used as an insulating varnish to insulate and fix the magnet wires of the stator of the motor unit of the compressor. The solventless varnish is cured by heating at 153 to 180‹C for 0.5 to 3.5 hours. The thermosetting resin may be an epoxy acrylate, an unsaturated polyester or a urethane-linkage-containing acrylic resin.