Patent ID: 8353681

Claim:
A compressor comprising: a drive chamber for the intake and compression of a refrigerant; a lubricant separator separating lubricant from the refrigerant in a discharge pressure region of the compressor, the lubricant being supplied to the drive chamber via a substream branched off from a high-pressure refrigerant stream, the lubricant separator including: a compressor component in the discharge pressure region having a stepped borehole defining a smaller diameter and a larger diameter, the larger diameter having an upper region and a lower region, the stepped borehole defining a separating region for separating the lubricant from the refrigerant; a sleeve inserted in the smaller diameter and partially projecting into the upper region of the stepped borehole having the larger diameter, the sleeve having a constant diameter along an axial length of the sleeve; and a valve, the valve being in a lower region of the larger diameter and not contacting the sleeve, the valve permitting the lubricant to be supplied directly to the drive chamber via the substream so as to regulate a pressure in the drive chamber.