Patent EP-2199614-A1 (EP)
Inventor: CORNET ALBERT
IPC: B01D19/00
Filed: 2008-12-22
Abstract: The machine for pumping, separating into two distinct phases and purifying a mixture or two-phase liquid/gas (4) such as oil/air in an inlet of the machine, comprises a unit for suction, pumping and partially separating the two-phase fluid, and a unit for drying and evacuating separated gas and a unit for degassing and discharging the separated liquid. The physically separated three stages are capable to move by an internal or external unit and integrated in a unique housing. The pumping, separation and purification is carried out using an inlet. The machine for pumping, separating into two distinct phases and purifying a mixture or two-phase liquid/gas (4) such as oil/air in an inlet of the machine, comprises a unit for suction, pumping and partially separating the two-phase fluid, and a unit for drying and evacuating separated gas and a unit for degassing and discharging the separated liquid. The physically separated three stages are capable to move by an internal or external unit and integrated in a unique housing. The pumping, separation and purification is carried out using an inlet in which the suction, pumping and a partial separation of two-phase fluid takes place; a liquid phase and a gaseous phase; a first area in which degassing of the liquid phase extracted from the first stage takes place and a second area in which drying of the gas phase extracted from the first stage takes place; a first outlet for the dried gas; and a third stage in which the discharge takes place and pressurizing the degassed liquid fitted with a second outlet for degassed liquid. The first stage comprises a truncated axial-centrifugal wheel rotated in a fixed housing of the same shape, coupled to a rotating shaft arranged along the axis of the machine, and an inducer that provides to two-phase fluid entering a pumping pressure and causes partial centrifugal separation into a liquid phase and a gaseous phase. The two areas of the second stage are concentric, the first area is a buffer mainly annular at the outer periphery of the second stage (B), which allows the degassing or deaerating of the liquid phase and second area is an internal cylindrical second stage, which allows drying or removing of the oil from gas phase. The first area of the second stage comprises the most external part of the inductor located distally with respect to the rotating shaft and configured so that the liquid obtained after partial separation and extraction in the first stage is degassed before transferred to the third stage. The second area of the second stage is coupled and rotated with the rotating shaft located proximally with respect to the shaft and configured so that the gas filled with liquid droplets after partial separation and extraction in the first stage are defatted by forced passage in the second area and extracted by the machine. The second zone comprises a disc (3) formed of a solid, porous or perforated channels defining an inner diameter of blades. The first output comprises an axial hole formed in the drive shaft. The coil (2) is configured to maintain a continuous ring of liquid in its structure, whenever the composition of the mixture entering the machine, and includes a valve at its outlet with a calibration allowing only the fluid of higher density to pass the liquid outlet. The pumped liquid is extracted from the coil axially or tangentially. The inductor includes, in its distal axis, a radial channel leading into the coil substantially parallel to the direction of the centrifugal force at which the phase fluid is subjected. INDEPENDENT CLAIMS are included for: (1) a circuit for lubrication and cooling of oil (5) in an aircraft engine such as a turboreactor; and (2) a process for pumping, separating into two distinct phases and purifying a mixture or two-phase liquid/gas such as oil/air in an inlet of the machine.