| 摘要 |
Compressor, especially a screw compressor, with two rotors supported in the working space of a housing by means of bearings on the intake and delivery side and in mesh with one another, a lubricant circuit for lubricating the bearings, which has a reservoir (46), lubricant lines (52) leading from the latter to the bearings, lubricant collecting spaces (56, 58) and return lines leading from the latter to the reservoir. The coolant and sealant circuit has a pressurised coolant and sealant reservoir under the delivery pressure of the compressor, feedlines leading from here to the working space of the compressor, and a separator (30), connected to the compressor delivery line, for the coolant and sealant entrained by the gas flow. The reservoir of the lubricant circuit is closed and its gas space is connected to the intake side of the compressor by a compensating line (70). In the compressor, in which the lubricant circuit and the coolant and sealant circuit contain the same medium as lubricant, coolant and sealant, the lubricant circuit and the coolant and sealant circuit are connected by a controllable connecting valve (76), which can be controlled by a level sensor (74) in the reservoir (46) of the lubricant circuit. A connecting line with a valve (78) which can likewise be controlled by the level sensor (74), is provided between a lubricant line (52) and the intake side of the compressor. <IMAGE> |
