PISTON MACHINE Russian patent published in 2017 - IPC F01B3/04 

FIELD: machine engineering.

SUBSTANCE: machine contains a housing in which a hollow drive shaft and at least two pistons are placed on the central axis with the ability to rotate and reciprocate the movement about the axis and the housing. The inner cylindrical cavity of the machine is divided into working cylinders by pistons and partitions. On the outer surface of the pistons are made closed longitudinal screw grooves, in which the leashes are placed. The parts of the leashes protruding from the screw grooves are fixed relative to the body. The pistons are connected to the drive shaft by a splined connection ensuring free movement of the pistons along the axis of the shaft and transfer of torque between them. The splined connection of the second piston with the drive shaft is made with an angular displacement relative to the splined connection of the first piston in the direction of rotation of the drive shaft. In the body and central axis, channels filled with a working body are made. In the body are placed cylinders, which together with the cavity of the drive shaft form the inner cylindrical cavity of the machine. One of the cylinders is fixed in the body, and the second cylinder is fixed relative to the first cylinder through the central axis. The longitudinal channels are formed on the inner surface of the axial hole of the pistons. The arrangement of the longitudinal channels, their length, width and depth are coordinated with the shape, position, the number of screw grooves made on the cylindrical surface of the piston and the volumetric characteristics of the machine. The drive shaft is kinematically connected to the output shaft.

EFFECT: manufacturability and simplicity of design, increased productivity and efficiency.

6 dwg