MULTIPURPOSE SPUR DISPLACEMENT MACHINE Russian patent published in 2015 - IPC F04C3/02 F04C18/50 

FIELD: machine building.

SUBSTANCE: spur displacement machine comprises a casing, a suction port and a forcing valve 17 installed at the suction and pressure lines 12 respectively, a working cylinder 3 with a main rotor 4 set on it and having at least one protrusion with its radius being equal to the radius of the cylinder 3, and an auxiliary rotor 7 having a recess for the rotor 4 protrusion to be located in it. Both rotors 4 and 7 are kinematically coupled providing for their synchronous rotation. The rotors 4 and 7 are mounted so that their axes are intersecting. The rotation plane of the rotor 7 is placed at the angle of 90° to the rotation plane of the rotor 4. The end face of the rotor 7 turned to the cylinder 3 is placed at the distance equal to the rotor 4 radius from the rotation axis of the rotor 4. The line 12 is equipped by a slide valve with a hole 15 and a movable element 16 which is installed in it and provided with two fixed positions along the hole 15 axis. A valve 17 is installed in the element 16. In one of the element 16 positions the cylinder 3 is connected to the auxiliary pressure line.

EFFECT: expanded range of application due to high efficiency of operation with both gases and liquid.

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