Scroll compressor

A scroll compressor comprising:

• a scroll assembly comprising two scroll walls;
• a drive for causing a relative orbiting motion between the scroll walls for compressing fluid on two fluid flow paths between an inlet and an exhaust of the scroll assembly;
• a first fluid flow path being formed between a first two facing wall surfaces of the scroll walls and a second fluid flow path being formed between a second two facing wall surfaces of the scroll walls;
• wherein a first ambient clearance between the first two facing wall surfaces of the scroll walls increases as the radial distance from the exhaust increases and a second ambient clearance between the second two facing wall surfaces of the scroll walls decreases as the radial distance from the exhaust increases and the rate of change of the first ambient clearance is different to the rate of change of the second ambient clearance.

A scroll compressor comprising:

• a scroll assembly comprising two scroll walls;
• a drive for causing an orbiting motion of one of the scroll walls relative to the other of the scroll walls for compressing fluid between an inlet and an exhaust of the scroll assembly;
• wherein the exhaust being at an axial centre of the scroll assembly and the inlet being at a radial outer portion of the scroll assembly;
• and at least one of the scroll walls are tapered so that the walls or walls have a greater radial thickness towards the exhaust and a smaller radial thickness towards the inlet.