| 摘要 |
The invention relates to a piston compressor (1) for compressing a cryogenic fluid medium (M), in particular in the form of hydrogen. It is provided according to the invention that an encircling first gap (S) between a first piston (31) and an inner side (300a), facing towards the first piston (31), of a first cylinder (30) is sealed off by means of at least one seal (32), which is provided on the first piston (31), in such a way that leakage medium (M') from the first cylinder interior space (300) passes through said first gap (S) into the interior space (100) of the housing (11) and flows around the rotor (20) and in particular also the stator, wherein the permanent magnets (P) are provided with a coating (B) in order to protect against said medium (M), in particular in order to protect against hydrogenation in the case of a medium (M) in the form of hydrogen. The invention also relates to a method for compressing a cryogenic fluid medium (M), in particular hydrogen. |
