To provide a compressor having a small number of components and high efficiency.

This compressor is provided with a first disk (14) that has a conical first surface (14a) forming a scroll-type slit (14c) in a case (10, 12), a second disk (18) forming a second surface (18a) that can linearly contact with the first surface (14a), a blade (38) that is engaged with a slit (14c) and can seal between the slit (14c) and the second surface (18a), and a swash plate (22a) that can slide the second disk (18) along the first surface (14a) by rotation, so that a contact line (C) between the first surface (14a) and the second surface (18a) is rotatively moved by the rotation of the swash plate (22a).