Patent ID: 6736620
Filing Date: 2004-05-18
Classification: F04C

Abstract:
A scroll-type fluid machine comprising:a housing; a stationary scroll fixed to the housing and having an outer inlet, a plurality of inner outlets and a spiral stationary wrap on one side face, at least one of the inner outlets being able to be closed by a closure member; an orbiting scroll connected to a drive shaft to be able to revolve with respect to the stationary scroll, a spiral orbiting wrap facing the stationary wrap of the stationary scroll to form a compression chamber between the stationary wrap and the orbiting wrap, a low-pressure pressurizing portion that is formed at an outer side of said stationary wrap and said orbiting wrap; said low-pressure pressurizing portion having said outer inlet and said plurality of inner outlets; and a high pressure pressurizing portion that is formed at an inner side of said stationary wrap and said orbiting wrap, said low-pressure pressurizing portion being separated from said inner high-pressure pressurizing portion, a gas pressurized in said low-pressure pressurizing portion being discharged through at least one of said plurality of inner outlets of said low-pressure pressurizing portion and introduced into said high-pressure pressurizing portion through a high-pressure-side inlet of said high-pressure pressurizing portion for further pressurizing.