CLOSED ROTARY COMPRESSOR FOR REDUCING THE EXCESSIVE COMPRESSION AND NOISE IN EJECTING FLUID COMPRESSED BY THE ROTATION OF A DIVIDING PLATE DISPOSED AT A ROTARY SHAFT THROUGH A DISCHARGE PASSAGE BY A RESONATOR

摘要

PURPOSE: A closed rotary compressor is provided to reduce pressure pulsation and discharge noise generated in ejecting the compressed fluid by a resonator for flowing some of the discharged fluid into a volumetric space through an inlet port. CONSTITUTION: A closed rotary compressor is composed of a cylinder assembly(D) having a discharge passage formed at both sides of a cylinder(130) to discharge compressed fluid and forming a closed inner space by covering and combining upper and lower bearings(40,50); a wave-form dividing plate(22) disposed at the side of a rotary shaft(20) inserted through the upper and lower bearings of the cylinder assembly to divide the inner space of the cylinder assembly; a vane(70) moved in parallel to the longitudinal direction of the rotary shaft and supported elastically to contact with both sides of the dividing plate and to suck in and compress the fluid; and at least one resonator(131) arranged at the cylinder to flow in the fluid through the discharge passage and to reduce the excessive compression and noise of the discharge fluid. The closed rotary compressor compresses the fluid in the inner space of the cylinder assembly split by the dividing plate of the rotary shaft according to the rotation of the rotary shaft and ejects the fluid through the discharge passage.