SCROLL-TYPE FLUID MACHINE

摘要

[Problem] To provide a scroll-type fluid machine having improved axial sealing in a scroll unit in which the spiral shape of a lap is formed as an algebraic spiral. [Solution] A scroll-type fluid machine 1 in which the spiral shapes of laps 2b, 3b of fixed and movable scrolls 2, 3 are formed as algebraic spirals, wherein the lap wall thickness A near the end points of finishing processing of the lap outer peripheries in the fixed scroll 2 and the movable scroll 3 is equal to the minimum wall thickness As (As = 2 × B1s (or B2s) + c) with which it is possible to arrange tip seals 40, 41. B1s is the minimum wall thickness from the lap outer wall to a tip seal groove, B2s (= B1s) is the minimum wall thickness from the lap inner wall to the tip seal groove, and c (constant) is the tip seal width.