DEVICE FOR SEPARATING THE OIL-AIR MIXTURE OF AN INTERNAL COMBUSTION ENGINE Russian patent published in 2023 - IPC F01M13/04 F02C7/06 B01D45/14 

FIELD: engines.

SUBSTANCE: invention can be used in devices for separating the oil-air mixture of internal combustion engines. The device for separating the oil-air mixture of an internal combustion engine comprises a stator housing (1), (2), a rotor (3) mounted in the stator housing for rotation and kinematically connected to the drive (9). The device includes blades (4) and (5) of the lower and upper stages, a casing (6) covering the lower stage of the blades (4) with the formation of an internal cavity (7) of the rotor and annular gaps (8) between the inner surface of the casing (6) and the edges of blades (4) of the lower stage. Between the outer surface of the casing (6) and the surface of the stator housing, in the stator housing there are inlet and outlet oil channels (10) and (11) connected with an annular gap (8) between the inner surface of the casing (6) wall and the edges of the blades (4) of the lower stage. The outlet oil channel (11) is located at the level of the open end of the casing (6). The stator housing is made in the form of interconnected upper and lower coaxial parts (1) and (2). The rotor is a hub wheel (3) with blades. The upper end of the casing (6) is fixed on the wheel hub (3). The inlet oil channel (10) is located in the lower part (2) of the housing from the side of the open end of the casing coaxially with it. The oil outlet and air outlet channels (11) and (12) are located in series above the oil inlet channel (10). The blades (5) of the upper stage are installed with a partial entry of the ends of the blades into the outlet air channel (12). The hub wheel (3) has through holes (13) designed to communicate the cavity (7) of the rotor with the air outlet channel (12). The filter element is made in the form of mesh plates (14) located in the lower part (2) of the stator housing from the side of the outlet oil channel (11) perpendicular to the rotor axis. The device is equipped with a deflector made in the form of an annular shell (15) installed in the gap between the outer surface of the casing (6) wall and the inner surface of the stator housing concentrically relative to the casing (6). The upper end of the shell (15) is fixed on the stator housing at the level of the corresponding upper end of the casing (6), and the lower end terminates above the level of the lower end of the casing (6) with the formation of an annular slot (16) between the end face of the shell (15) and the stator housing. The annular shell (15) forms an internal annular gap (17) communicated with the air outlet channel (12). The annular shell (15) forms an external annular gap (18) located respectively between the walls of the annular shell (15) and the stator housing. The outer annular gap (18) is in communication with the inner annular gap (17) by means of an annular gap (16), an additional channel (19) located between the outlet oil and outlet air channels (11) and (12), communicated with the outer annular gap (18) and intended for supplying crankcase gases of an internal combustion engine. The oil-air mixture reflector is made in the form of a screen (20) fixed on the hub wheel (3) in the rotor cavity from the side of the lower stage of the blades (4) perpendicular to the axis of the casing (6) and covers the through holes (13) in the hub wheel.

EFFECT: reduced resistance to rotation of the rotor, reduced power consumption, and increased reliability of the device.

2 cl, 5 dwg