| 摘要 |
PURPOSE:To effectively attenuate the pulsation of discharge pressure for solving the problem of vibration, noise, or the like, by providing a discharge muffler on the base plate of a fixed scroll so as to minimize the discharge pressure receiving area. CONSTITUTION:On the outside surface on the opposite side of the scroll projection 1b of a fixed scroll base plate 1a, a cylindrical part 1c surrounding the circumference of a discharge port 6 is projectedly provided. And a discharge muffler 20 having a required discharge space 21 is arranged on the base plate 1a in such a way that the opening end 20a is fitted on this cylindrical part 1c, and further it is provided so as to be fixed on the upper shell 13 side. Further, a sealing member 22 which has been formed by an elastic material having a large thermal expansion coefficient such as thermoplastic resins, and which has such a configuration and dimensions as a clearance is caused in the fitting part between the opening end 20a of the discharge muffler 20 and the fixed scroll base plate 1a in the room temperature condition at the time of compressor stoppage is interposed. Thus, the pulsation of discharge pressure can be attenuated, and further the deformation of the fixed scroll base plate 1a can be restrained.
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