Provided is a compressor as a device which can solve a contradictory technical problem of installing an intake sound muffler while downsizing the device under a circumstance that installation of the intake sound muffler is indispensable to reduce intake noise of the compressor, and the compressor comprises: a first lid part provided with a small hole which forms an intake port of the compressor, the lid part constituting a portion of a cylindrical casing of the compressor； a cylindrical part； and a second lid part which forms a small chamber together with the first lid part, wherein the second lid part is provided with a suction nozzle for sucking air into the small chamber.
