| 摘要 |
PURPOSE: A swing type oil-free compressor having vertical dual cylinders is provided to provide sufficient compressed air while using the minimum installation area and to prevent damage of a connecting part of a driving part and cylinder parts, and leakage of lubricating oil and compressed air. CONSTITUTION: First to fourth connecting rods(310,320,340) are alternately combined with first and second crank shafts(210,220) by the pair to rotate one ends, each having a center coupled by a hinge to bend the center. A first rotor(510) is combined to rotate in a direction perpendicular to the crank shaft in a first cylinder arranged at one side of an upper part of a driving part centering on the crank shaft. A second rotor(520) is combined to rotate in a direction perpendicular to the crank shaft in a second cylinder arranged at the other side of the upper part of the driving part centering on the crank shaft. A first driving arm(410) is combined with a rotary shaft(512) of the first rotor in the center and both ends of the first driving arm are rotatively combined with the other ends of the first and third connecting rods by the medium of spherical bearings(315,335). A second driving arm(420) is combined with a rotary shaft(522) of the second rotor in the center and both ends of the second driving arm are rotatively combined with the other ends of the second and fourth connecting rods by the medium of spherical bearings(325,345). The first and second driving arms receive rotary power of the first and second crank shafts rotating in the same direction at the same time through the first and third connecting rods and the second and fourth connecting rods respectively so that the first and second driving arms rotatively reciprocate to repeatedly reciprocate the first and second rotors as much as an angle corresponding to a distance that the other ends of the first to fourth connecting rods move backward and forward according to rotary diameters of one ends of the first to fourth connecting rods.
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