Co-rotating scroll compressor and method for designing the same

A method for designing a co-rotating scroll compressor,

• the co-rotating scroll compressor comprising:
• a driving shaft driven by a drive unit so as to rotate;
• a driving-side scroll member connected to the driving shaft, and comprising a plurality of spiral driving-side walls provided about a center of a driving-side end plate at predetermined angular intervals;
• a driven-side scroll member comprising spiral driven-side walls, the driven-side walls being provided about a center of a driven-side end plate at predetermined angular intervals and in a number corresponding to the driving-side walls, the driven-side walls being engaged with the corresponding driving-side walls so as to form a compression space;
• a synchronous driving mechanism that transmits driving force from the driving-side scroll member to the driven-side scroll member so that the driving-side scroll member and the driven-side scroll member rotationally move in a same direction at a same angular velocity;
• a driving-side bearing that rotatably supports the driving-side scroll member;
• and
• a driven-side bearing that rotatably supports the driven-side scroll member, the method comprising:
• shifting a center of gravity of at least one of the driving shaft, the driving-side scroll member, or the driven-side scroll member from a rotation center by a predetermined distance;
• and
• setting the predetermined distance so that a total bearing load obtained by centrifugal force and fluid compression that is 5% of a dynamic load rating of the driving-side bearing and/or the driven-side bearing or more is generated.