Co-rotating scroll compressor

A co-rotating scroll compressor comprising:

• a housing having a discharge portion through which fluid is discharged to an outside;
• and
• a compression mechanism disposed in the housing;
• the compression mechanism having:
• a compression chamber in which fluid is compressed while a volume of the compression chamber is reduced;
• a discharge chamber that is in communication with the compression chamber and to which the fluid compressed in the compression chamber is discharged;
• and
• a rotating shaft portion that is supported by the housing via a bearing so as to be rotatable around a rotation axis, and
• the compression mechanism including a driving scroll and a driven scroll, the driving scroll being configured to be rotated by a drive mechanism, and having a driving scroll end plate and a driving scroll spiral body that is formed integrally with the driving scroll end plate and protrudes in a spiral shape toward the driven scroll, the driven scroll facing the driving scroll, and configured to be rotated by the driving scroll and a driven mechanism at a position eccentric with respect to the driving scroll to form the compression chamber between the driving scroll and the driven scroll, the driven scroll having a driven scroll end plate, and a driven scroll spiral body that is formed integrally with the driven scroll end plate and protrudes toward the driving scroll in a spiral shape, wherein
• the discharge chamber has a diameter larger than an outer diameter of the bearing,
• the rotating shaft portion has a discharge communication portion through which the fluid discharged into the discharge chamber flows to the discharge portion,
• a change in phase between the discharge portion and the discharge communication portion with rotation of the rotating shaft portion changes a flow resistance for the fluid flowing from the discharge communication portion to the discharge portion, and
• the discharge portion and the discharge communication portion reach a phase in which the flow resistance increases as a flow rate of the fluid to be discharged from the compression chamber to the discharge chamber approaches a maximum.