Method and scroll compressor for compressing a compressible medium

A scroll compressor comprising;

• at least two displacement elements at least one of which is orbitally movable relative to the other;
• each of the at least two displacement elements defining at least one helically extending limiting face;
• the displacement elements cooperating to form at least one chamber during operation of the scroll compressor through a suction phase, a compression phase, and a discharge phase;
• the chamber defining a volume that is variable during operation of the scroll compressor;
• the chamber comprising during said suction phase a suction chamber having at least one opening;
• at least one of the displacement elements having a profile back that projects into the suction chamber and is engagable with one of the helically extending limiting faces.

A scroll compressor comprising;

• at least two displacement elements at least one of which is orbitally movable relative to the other;
• each of the at least two displacement elements defining at least one helically extending limiting face;
• the displacement elements cooperating to form at least one chamber during operation of the scroll compressor through a suction phase, a compression phase, and a discharge phase;
• the chamber defining a volume that is variable during operation of the scroll compressor;
• the chamber comprising during said suction phase a suction chamber having at least one opening;
• at least one of the displacement elements having a profile back that projects into the suction chamber, the profile back having an outer and inner limiting face and defining a larger curvature on the outer limiting face than on the inner limiting face, and wherein
• over a predetermined circulation length the profile back of one of the displacement elements on the inner limiting face has a contact point with an inner end of the other displacement element.