Spiral compressor having an oil chamber in the rotor

Spiral compressor which contains a housing (1) with a fixed spiral (2);

• a moving rotor (3) in this housing (1) with a moving spiral (4) working in conjunction with the fixed spiral (2);
• and a crankshaft (5) containing a main shaft (6) which is bearing-mounted in the housing (1) and which has a secondary shaft (9) situated eccentrically in relation to the geometric axis (11) of the main shaft (6) which is bearing-mounted in the rotor (3) by means of a bearing (14);
• whereby means (30-31-32) are provided to prevent the rotor (3) from rotating around its own centre, such that the rotor (3) can only carry out a circular movement around the geometric axis (11) of the crankshaft (5) as this crankshaft (5) rotates, characterized in that the rotor (3) is provided with an oil chamber (20) which is connected to the bearing (14) between the secondary shaft (9) and the rotor (3) and further characterized in that the oil chamber (20) has a draining aperture (23) at the bottom sealed by means of a plug (22).