| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress Hydrolysis and oligomer extraction caused by moisture carried in a cycle even in a supercritical condition under carbon dioxide atmosphere in a motor insulating film used for a refrigerant compressor. <P>SOLUTION: In the refrigerant compressor 50, a compressor unit 2 is connected to a motor 3 including a stator 11 and a rotor 10, and is stored in a closed container 1. The stator includes an iron core 15 and a coil 17 wound with the iron core. Insulating films 18, 19 coating the coil are three-layer structure films in which a polyphenylene sulfide layer is arranged on both surfaces of a polyethylene terephthalate layer. Carbon dioxide can be used as a coolant, and at least one of a poly alkylene glycol oil system, ester oil systems, and ether oil systems can be used as lubricating oil. <P>COPYRIGHT: (C)2008,JPO&INPIT |
