COMPRESSION MECHANISM AND SCROLL COMPRESSOR

摘要

The present invention has an object to increase strength and stiffness of a compression mechanism and to prevent seizing thereof simultaneously. A scroll compressor 1 includes a compression mechanism 15 which compresses refrigerant. The compression mechanism 15 includes a fixed scroll 24 and a movable scroll 26. The fixed scroll 24 and the movable scroll 26 are formed of different materials. One of the two scrolls is a cast iron molding fabricated through semi-molten die casting, while the other is a grey iron casting. The grey iron casting has a tensile strength of greater than or equal to 250N/mm 2 and less than 300N/mm 2 .