METHOD OF MANUFACTURING WORKING WHEEL OF RADIAL TURBOGENERATOR, STAGE Russian patent published in 2018 - IPC F04D29/02 

FIELD: machine building.

SUBSTANCE: invention concerns an impeller (IMP) of a radial turbogenerator (RTF) comprising: a wheel shroud (SW), a chip washer (CW), blades (BL), a hub (HB), hub (HB) is designed in such a way that it can be mounted on the shaft (SH) propagating along the axis (X), the wheel shroud (SW) spreads radially, the chip washer (CW) is connected to the wheel shroud (SW) with blades (BL) in such a way that separated flow channels (FC) are defined in the circumferential direction between the wheel shroud (SW) and the chip washer (CW) by blades (BL) in the circumferential direction in the radial zone of the impeller (IMP). Impeller (IMP) has a first through passage for flow (O1) in the axial direction, in the radial proximity of the hub (HB), the impeller (IMP) has a second through passage for flow (O2) in the radial direction located away from the hub (HB) farther than the first through flow passage (O1). To reduce the flow loss while simultaneously optimizing production costs, it is proposed, so that the surface of the chip washer (CW) facing the wheel shroud (SW) has a lower roughness than the surface of the wheel shroud (SW) facing the chip washer (CW).

EFFECT: reducing flow loss while simultaneously optimizing production costs.

10 cl, 3 dwg