Compressor with two cooling chambers

A compressor, which is cooled by a cooling medium, comprising:

• a compression chamber in which gas is compressed and then discharged therefrom;
• a first cooling chamber, in which the cooling medium flows, provided so as to adjoin the compression chamber for cooling the gas in the compression chamber and to surround a discharge port for cooling the gas flowing therethrough;
• and
• a second cooling chamber adjoining the first cooling chamber, the second cooling chamber having a gas passage in which the discharged gas flows and a medium passage in which the cooling medium flows, the medium passage being arranged so as to restrain transmission of heat from the discharged gas in the gas passage to the cooling medium in the first cooling chamber,
• wherein the first cooling chamber is located between the medium passage and the compression chamber, and the cooling medium flows into the first cooling chamber and the medium passage.