Compressor Comprising Purging and Method for Purging the Compressor Housing with Purge Gas

A piston compressor comprising a sealing arrangement (10) arranged in a compressor housing (2) for sealing a reciprocating piston rod (7) of the piston compressor (1), the sealing arrangement having a first and a second sealing element (22) which are arranged axially spaced apart in a recess (20) of the sealing arrangement (10), wherein a feed line (27) for a sealing medium is provided, which feed line is connected to the recess (20), and the sealing elements (22) are pressurized by the sealing medium, and wherein a hydraulic unit (12) is provided for generating the pressure of the sealing medium, wherein a ventilator (32) and a sealing medium container (37), which is partially filled with sealing medium, are provided in the hydraulic unit (12), wherein the ventilator (32) suctions air from the free space of the sealing medium container (37), and that the free space (45) in the sealing medium container (37) is connected via a line (15, 17) to the compressor housing (2), and an opening (16) is provided at the compressor housing (2) for connecting the interior of the compressor housing (2) to a purge gas reservoir (18).