A rotary compressor, the sealing shell is provided with a compression mechanism and a motor, the sealing shell is arranged at the bottom of the oil tank, the compression mechanism includes a crankshaft, the crankshaft comprises a main shaft, along the rotation of the crankshaft center has a center hole of the main shaft and the main bearings and the peripheral and inner wall of the rotating parts of the eccentric shaft sliding contact, the lower end of the spindle center the hole and is communicated with an oil pool, the motor comprises a rotor and a stator, rotor end toward the main bearing is provided with a pressure relief device, the pressure relief device includes a first end ring is provided with at the ends of the rotor end ring groove, end plate disposed at a first end ring and cover end ring groove, the first end ring and the end plate and the rotor is surrounded by the end rings space, side wall is located in the end of the main shaft in the annulus space is arranged on the gas channel more than one tube, connected at one end and end ring pipe of the gas channel, gas passage tube The other end of the spindle is communicated with the central hole of the main shaft. The invention has the advantages of simple and reasonable structure, good lubrication effect and wide application range.
【技术实现步骤摘要】
【技术保护点】
１．一种回转式压缩机，密封壳体（１）内设置有压缩机构（Ｒ２）和电机（３），密封壳体的底部设置有油池（４１），压缩机构包括曲轴（１８），曲轴包括沿着曲轴回转中心具有主轴中心孔（１７）且被主轴承（５）支撑的主轴（１９）、和外周与旋转件的内壁滑接的偏心轴（３１），主轴中心孔的下端与油池相通，主轴承将密封壳体分隔为低压腔和高压腔，电机包括转子（３５）和定子（３６），其特征是转子朝向主轴承的一端设置有降压装置，该降压装置包括设置在转子端部的带有端环槽（４９）的第一端环（４４ａ），设置在第一端环上并覆盖端环槽的端板（３９），第一端环、端板和转子共同围成端环空间，位于端环空间内的主轴的侧壁上设置有一个以上的气体通路管（４７），该气体通路管的一端与端环空间相通，气体通路管的另一端与主轴中心孔相通。
【技术特征摘要】
【专利技术属性】
技术研发人员：小津政雄，陈振华，
申请(专利权)人：广东美芝制冷设备有限公司，
类型：发明
国别省市：44[]
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