ROTARY PISTON MACHINE OF VOLUMETRIC EXPANSION Russian patent published in 2014 - IPC F01C1/07 F01C1/77 F02G1/44 

FIELD: machine building.

SUBSTANCE: invention relates to the rotary piston machine comprising a housing, two working shafts, central fixed toothed gear wheel and output shaft with an eccentric. The working shafts are fitted with vane pistons and levers. The eccentric has a spider with a planetary pinion engaged with the central sprocket with internal gearing with a reduction ratio i=n/(n+1) (where n=1, 2, 3, 4, 5… - series of integers). The spider has an articulated connection of connecting rods with levers of both working shafts. The amount of vane pistons on each working shaft is equal to n+1. The circumferential working cavity of the housing (1) has inlet (18) and outlet (19) bores, and also output (27) and input (28) bores of cross-flow volumes, provisioned outside the working cavity. The passages (18 and 19, 27 and 28) have series adjoining connection to a circumferential working cavity of the housing (1) towards the motion of vane pistons (5 and 6). Both inlet (18) and outlet (19) bores, and output (27) and input (28) passages are located from both sides with reference to the places of contacts of fractures of edges of vane pistons (5 and 6). Edges of vane pistons (5 and 6) have angular width, sufficient for simultaneous overlapping of output (27) and input (28) passages.

EFFECT: increased cost effectiveness and reliability of machinery operation.

10 cl, 45 dwg