Spiralteil für Spiralverdrängungsmaschine für Fluida.

摘要

A scroll type fluid displacement apparatus is disclosed in which a pair of scrolls (18, 19) interfit at an angular and radial offset, each scroll including a circular end plate (181, 19) and a spiral element (182, 192). The outer wall surface of each spiral element (182, 192), which extends from an outer end of the spiral element to a point (A, D) first contacted by the outer end of the other spiral element when newly sealed off fluid pockets are defined, is not surface finished. Accordingly, the time for manufacturing each spiral element can be reduced and waste of material, which is produced by turning the scroll elements to finsih them, is decreased.