| 摘要 |
PURPOSE:To prevent the occurrence of lubrication failure in a scroll-type fluid machine by making an end plate to be as small as possible by way of calculat ing the outside diameter of the end plate in a turning scroll by means of a specific formula, into which are substituted the numerical values, such as the radius of rotation of the turning scroll, the radius of base circle of an involute curve forming a spiral figure and the like. CONSTITUTION:The captioned machine discharges a fluid, which is introduced into the closed space made up of the two spiral substances of a rotating scroll and a turning scroll, after applying a pressure to it. In this case, a turning scroll 100 is provided on an end plate 101 in such a manner that it is one with a spiral substance 102 formed of an involute curve, and also, the origin of the involute and the origin of the end plate 101 agree. In addition, if the radius of rotation of the turning scroll 100 is (rho), the radius of base circle of an involute curve is (b), and the intake cut-off turning angle is (thetad*), the theoretical radius (gammam) of the end plate 101 is obtained by means of a formula I, and then, the actual radius (Rm) of the end plate 101 is obtained from said theoretical radius, when C is a margin to escape and is a margin to chamfer or a margin to lap for the end plate 101. |
