Scroll-type fluid machine having an outer chamber and an inner chamber

摘要

A scroll-type fluid machine includes a fixed scroll having spiral-form fixed wraps standing on one side face and an orbiting scroll having spiral-form orbiting wraps standing on one side face facing the fixed scroll. The orbiting scroll is set up on a drive shaft so as to be able to orbit. A sealed chamber is formed between the fixed wraps and the orbiting wraps. In the sealed chamber an outer sealed chamber and an inner sealed chamber are defined by an annular partition provided on either the fixed scroll or the orbiting scroll. The outer sealed chamber includes outer inlets on the outside and an outer outlet on the inside, and the inner sealed chamber includes an inner inlet on the outside and an inner outlet in the center. A gas that has been taken in via the outer inlets is compressed and discharged via the outer outlet, and a gas that has been taken in via the inner inlet is compressed and discharged via the inner outlet.