Scroll compressor

A scroll compressor including a compression mechanism, the compression mechanism including a compression chamber, the compression chamber being formed by a combination of a fixed scroll and an orbiting scroll and configured to compress working gas, the fixed scroll including a main port and a plurality of sub-ports, the main port being a port through which the working gas compressed in the compression chamber is to be discharged, the plurality of sub-ports being ports through which the working gas over-compressed in the compression chamber is to be discharged, the scroll compressor comprising:

• a rotary shaft that drives the compression mechanism;
• and
• a silencing chamber disposed downstream of the main port with respect to a flow of the working gas,
• wherein the silencing chamber includes
• a discharge hole through which the working gas is to be discharged out of the silencing chamber,
• an expansion part located upstream of the discharge hole, the expansion part being a recess that defines a space communicating with the main port, and
• a plurality of chamber sub-ports each communicating with a corresponding one of the plurality of sub-ports, and
• wherein the expansion part is disposed between two of the plurality of chamber sub-ports, the expansion part being larger than the main port and having a flattened shape as seen in an axial direction of the rotary shaft.