To provide a compressor that indirectly cools a compression chamber to form a high pressure fluid free of contamination by oil, in contrast to a conventional compressor that cools a high pressure fluid of high temperature by direct injection of oil to cause contamination of the high pressure fluid by oil and pose various disadvantages, in a scroll compressor for forming a high pressure fluid by reducing the volume of compression chambers formed by respective sides of orbiting scrolls and fixed scrolls by rotary oscillation of the orbiting scrolls.

In the scroll compressor, the fixed scrolls project from both casing sidewalls, and the orbiting scrolls project from both sides of an orbiter capable of rotary oscillation round a rotary shaft to form the compression chambers against the fixed scrolls. The compressor is effectively and indirectly cooled, and efficiently supplies a clean high pressure fluid free of contamination by oil.