| 摘要 |
Minimization is allowed while improving the separation efficiency in an oil separator that separates from gas oil in a mist form included in a blow-by gas. The oil separator according to the present invention includes a plurality of separation discs that are provided rotatable together with a spindle and layered in an axis direction of the spindle, a nozzle that is provided to protrude from a lower circumferential face of the spindle and configured to rotate the spindle by injection of an oil, a lower case that is provided with a gas inflow part into which blow-by gas flows and an oil discharge part into which an oil after separation is discharged, an upper case that sections together with the lower case a housing chamber in which the spindle, the separation discs and the nozzle are housed, and a sectioning member that sections the housing chamber into a primary separation chamber configured to primarily separate the oil mist and into a secondary separation chamber that secondarily separates the oil mist included in the gas being the target of treatment after primary separation, and forms between the nozzle and the separation discs a communication opening that guides the gas being the target of treatment. |
