Scroll-type compressor with oil grooves on scroll sliding surfaces

A scroll compressor, comprising

• a compression mechanism including
• a fixed scroll having a fixed end plate, an outer peripheral wall standing on an outer edge of the fixed end plate, and a fixed wrap standing inside the outer peripheral wall, and
• a movable scroll having a movable end plate in sliding contact with tip ends of the fixed wrap and the outer peripheral wall of the fixed scroll, and a movable wrap standing on the movable end plate,
• the compression mechanism forming a fluid chamber between the fixed scroll and the movable scroll,
• a fixed scroll oil groove being formed in a fixed sliding contact surface of the outer peripheral wall of the fixed scroll on which the movable end plate of the movable scroll slides, lubricating oil having a high pressure corresponding to a discharge pressure of the compression mechanism being fed into the fixed scroll oil groove,
• a movable scroll oil groove being formed in a movable sliding contact surface of the movable scroll, which slides on the outer peripheral wall of the fixed scroll, and
• the compression mechanism performing
• a first operation in which the fixed scroll oil groove and the movable scroll oil groove communicate with each other without the fixed scroll oil groove and the movable scroll oil groove communicating with the fluid chamber, and
• a second operation in which, after the first operation, the movable scroll oil groove simultaneously communicating with both of the fixed scroll oil groove and the fluid chamber.