Compressor with a deformable groove

A compressor comprising:

• a casing configured to accommodate refrigerant;
• a driver coupled to an inner circumferential surface of the casing and configured to rotate a rotatable shaft;
• and
• a compression assembly coupled to the rotatable shaft and configured to compress the refrigerant in the casing, the compression assembly comprising:
• an orbiting scroll coupled to the rotatable shaft and configured to perform an orbiting motion based on rotation of the rotatable shaft,
• a fixed scroll engaged with the orbiting scroll and configured to receive the refrigerant and to compress the refrigerant based on the orbiting motion of the orbiting scroll, the fixed scroll being configured to discharge the refrigerant,
• a main frame that is disposed on the fixed scroll and accommodates the orbiting scroll therein, wherein the rotatable shaft passes through the main frame, and
• an Oldham's ring comprising:
• a ring body that is disposed between the orbiting scroll and the main frame,
• a first key that protrudes from the ring body and is coupled to the orbiting scroll, wherein the orbiting scroll defines a first key groove that accommodates the first key therein and that is configured to contact the first key based on rotation of the rotatable shaft, and
• a second key that protrudes from the ring body and is coupled to the main frame, wherein the main frame defines a second key groove that accommodates the second key therein and that is configured to contact the second key based on rotation of the rotatable shaft, and wherein the first and second keys are configured to prevent a spinning motion of the orbiting scroll,
• wherein at least one of the orbiting scroll or the main frame defines a deformable groove that is spaced apart from the first key groove and the second key groove, the deformable groove being recessed from the at least one of the orbiting scroll or the main frame.