FLUID MACHINE WITH SCROLL

PURPOSE:To shorten the length in axial direction by constructing a scroll fluid machine as per existing invention in such an arrangement that a driving side scroll and a follower side scroll rotate together to perform compression of refrigerant, supporting a drive shaft by the periphery of a boss provided protrudingly on the case, and by supporting the follower shaft within the boss. CONSTITUTION:A boss 4 is provided protruding downward at the upper case division 2a of a case 2 in the center of its inner surface, and a drive shaft in cylindrical form is borne by the periphery of the boss 4 through a metal bearing 5, and a rotor 8 constituting a motor 12 is fixed to the periphery of this drive shaft 6. At the bottom of this drive shaft 6 an extention part 6A stretching outward radially within the lower case division 2B is formed in single piece structure, and the periphery of a driving side scroll 15 is fixed to this extention part 6A using bolts 16. On a follower side scroll 20 constituting a compressor together with this driving side scroll member 15, a follower shaft 21 is installed, protruding in an eccentric position on the back surface of scroll 20, and supported rotatably within a support hole 21 formed in the boss 4.