Disclosed is a vacuum preventing device of a scroll compressor comprising:
a discharge cover installed at a body of a fixed scroll for dividing inside of
a case into a discharge region and a suction region; a vacuum cylinder installed
in the discharge cover thus to be connected to a compression chamber formed between
the fixed scroll and an orbiting scroll and having a pressure space therein so
that the discharge region can be connected to the suction region; a piston movably
installed in the pressure space for selectively connecting the discharge region
with the suction region by a pressure difference between the compression chamber
and the suction region; and an elastic member installed in the pressure space for
providing an elastic force to the piston.
