| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-stage rotary compressor capable of supplying an oil amount required particularly for the cylinder of a high-stage side rotating/compressing element in an internal intermediate pressure type two-stage rotary compressor. SOLUTION: An electric element 5 and the rotating/compressing element 6 are vertically disposed in a closed container 1, and the rotating/compressing element 6 is disposed with a low-stage side rotating/compressing element positioned on the upper side and a high-stage side rotating/compressing element 11 positioned on the lower side. A gas vent hole 10b is formed in a partition plate 10 between the low-stage side rotating/compressing element 9 and the high-stage side rotating/compressing element 11. An oil supply hole 13e is formed in a lower support member 13, its upper end is opened to a suction port 13c formed in the lower support member 13, and its lower end is opened to a clearance 24 produced by the thickness of a gasket 23 interposed in a joint part between the lower support member 13 and a cover plate 16 and allowed to communicate with an oil reservoir at the inside bottom part of the closed container 1 through the clearance 24. In place of the clearance 24, a recessed groove or a cutout may be formed in the lower surface of the lower support member 13 and connected to the oil supply hole 13e. COPYRIGHT: (C)2005,JPO&NCIPI
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