| 摘要 |
<p>PURPOSE:To bring a main shaft and a rotor into uniform surface contact with their respective bearing for lengthening their lives by inclining the main shaft to a rotary swash plate, and establishing pressing force against the inclining surface of the rotary swash plate so as to satisfy its specified conditions. CONSTITUTION:when the thrust bearing surface of a rotor 14 is denoted by ST, and an axis perpendicular to the thrust bearing surface ST by OR, a main shaft 16 is attached with its center axis OS inclining at the angle of theta from the axis OR toward the top dead center of the rotor 14. when the axial length of a radial bearing 15 is denoted by l, and a clearance between the bearing 15 and the main shaft 16 by c, the angle of theta is selected so as to satisfy the formula of theta>tan<-1>(c/l). On the other hand, the axial energizing force F2 of external forces acting onto the inclining surface of the rotor 14 is established so that, when a compressor is in its operation, the thrust race surface of the rotor 14 may come into contact with a thrust bearing 17, and the main shaft 16 and the radial bearing 15 may come into contact with each other with their center axes OS, OB being mutually parallel.</p> |
