DEVICE FOR PREVENTING HIGH VACUUM OF SCROLL COMPRESSOR

摘要

PURPOSE: A device for preventing high vacuum of scroll compressor is provided to prevent deterioration of reliability due to intake pressure falling under vacuum. CONSTITUTION: Range of an angle of a crank when a middle pressure hole(52) ranges from 480 deg. to a maximum discharge starting angle. Diameters(d1,d2) of the middle pressure hole and a discharge pressure hole(53) is equal to or smaller than thickness(t) of a wrap(51a) of a fixed scroll(51). The range of the angle of the crank opening the middle pressure hole is minimized to prevent discharge pressure acting on intake pressure during normal operation to prevent deterioration of compression performance.