Oil circuit, oil-free compressor provided with such oil circuit and method for controlling lubrication and / or cooling of such oil-free compressor via such oil circuit

摘要

Oil circuit for an oil-free compressor (1) comprising an engine (4) and a compressor element (2), - wherein this oil circuit (5) comprises an oil reservoir (10) with oil (11) and an oil rotor pump (13) around oil ( 11) to be sent to the compressor element (2) and / or the motor (4) via an oil line (12); - wherein this oil rotor pump (13) is driven by the aforementioned engine (4); - wherein the oil circuit (5) comprises a return line (19) for passing oil (11) from the compressor element (2) and / or the motor (4) back to the oil reservoir (10); - wherein the oil circuit (5) comprises a bypass line (15) and a bypass valve (14) around a part of the oil (11) between the oil rotor pump (13) on the one hand and the compressor element (2) and / or the motor (4) on the other hand returning it to the oil reservoir (10) without it passing oil (11) along or through the compressor element (2) and / or the engine (4); and - wherein the oil circuit (5) is provided with an oil cooler (16), the oil cooler (16) being placed in the bypass line (15) and the bypass valve (14) being placed in the oil line (12).