Oil console device and rotating machine lubrication system

An oil console device, comprising:

• an oil tank which includes a receiving portion which receives lubricating oil which has lubricated a bearing portion supporting a rotating body and a separation gas supplied to the bearing portion, and stores the lubricating oil which is recovered through the receiving portion;
• a pressure reducing fan which is connected to the oil tank and reduces a pressure inside the oil tank such that the pressure becomes a negative pressure;
• an oil mist separator which is provided to be closer to the oil tank side than the pressure reducing fan and captures the misted lubricating oil;
• an oil transfer pump which transfers the lubricating oil stored in the oil tank;
• and
• an exhaust unit which discharges gas inside the oil tank to the outside on a downstream side of the pressure reducing fan.