A centrifugal separator for cleaning a gas containing liquid impurities includes a stationary casing, enclosing a separation space and a surrounding side wall, a first end wall and a second end wall. An inlet extends through the stationary casing and permits supply of the gas to be cleaned. A rotating member includes a stack of separation disks rotatable around an axis of rotation by means of a drive member. A gas outlet permits discharge of cleaned gas and comprises an outlet opening through the stationary casing and an upstream portion extending from the outlet opening. A drainage outlet permits discharge of liquid impurities separated from the gas. The drainage outlet is provided in the gas outlet downstream the upstream portion. The gas outlet conveys the liquid impurities to the drainage outlet.

A lower partition wall having a through hole vertically penetrates the lower partition wall center. A spindle is inserted into the through hole. The top surface side of the lower partition wall includes a convex portion, a groove, and a drain hole. The convex portion is concentrically disposed at the through hole periphery. The groove extends, from an outer peripheral side of the convex portion, toward the through hole on an inner peripheral side. The drain hole is outside the convex portion, vertically penetrating the lower partition wall. The separated oil circles a top surface of the lower partition wall. The oil flowing to an inner peripheral side of the lower partition wall is guided to the groove and flows into the through hole. The oil flowing to an outer peripheral side of the lower partition wall flows into the drain hole.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.

A centrifuge for cleaning a reaction vessel unit, having a rotor for holding at least one reaction vessel unit with its opening(s) directed outwardly, a motor for rotating the rotor around a rotation axis, a housing having a substantially cylindrical inner surface, wherein a drain is provided for discharging fluid expelled from the reaction vessel unit, wherein a gap is provided between the inner surface and the rotor so that by rotating the rotor a wind is generated which drives the expelled fluid on the inner surface to the drain wherein an aspiration pump is connected to the drain for discharging fluid.