WORKING MEMBERS OF SPIRAL MACHINE Russian patent published in 2000 - IPC

FIELD: manufacture of compressors. SUBSTANCE: loops of longitudinal sections adjoining delivery side of working members are formed by outer and inner involutes. Contours of sections of end portions of working members do not extend beyond extensions of involutes forming working members. Contour of section of end portion of one working member embraces contour of section of end portion of other working member which makes it possible to unload volume of repeated expansion at end of delivery phase and to reduce dynamic loads in spiral machine. EFFECT: enhanced efficiency. 3 cl, 4 dwg