| 摘要 |
PURPOSE: An apparatus for reducing thrust surface friction of a hermetic compressor is provided to reduce abrasion, noise, and friction loss between bearing plates and a rotary shaft by inserting sliding ball bearings, thereby improving the reliability of a compressor. CONSTITUTION: A cylinder(2) is fixedly installed inside a casing to form a compressing chamber, having an inner space with open upper and lower parts. A rotary shaft passes through the inner space of the cylinder, and is combined with a rotator of a driving motor to rotate with the rotator. Upper and lower bearing plates(11,12) are combined with the open upper and lower parts of the cylinder for forming the inner space together, and support the rotary shaft in axial and radius directions. A partition plate(5) is combined with the rotary shaft for partitioning the inner space of the cylinder into two or more compressing chambers(S1,S2) while moving a fluid of each compressing chamber. A plurality of vanes are movably combined with the upper and lower bearing plates, and interrupt and compress the fluid of the compressing chambers inside by sliding in a state of being put on the partition plate to discharge the compressed fluid into the casing. Sliding ball bearing members(32) are inserted into thrust bearing surfaces of the upper and lower bearing plates for preventing friction between the thrust bearing surfaces.
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