A muffler of a compressor in which an imaginary central line of flowing
direction in a passage pipe at an inlet side and an imaginary central line
of the flowing direction in a passage pipe at an outlet side are formed to
have an angle of 40.about.50.degree. or a curved surface having a certain
curvature is formed in an extended space between an outlet end of the
passage pipe at the inlet side and an outlet end of the passage pipe at
the outlet side. Accordingly, the refrigerant gas which flows to the
passage pipe at the outlet side through the passage pipe at the inlet side
can flow smoothly as the refrigerant gas passes the curved surface and by
attenuating pulsation flow between the passage pipes at the inlet side and
outlet side, the refrigerant gas can be sucked smoothly. Therefore,
suction amount of the refrigerant gas increases, thus to improve the
efficiency of the compressor.
