| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problems: since in the existing structure, heat exchange between oil and a cylinder is not sufficiently performed and the cylinder is not cooled, the temperature of the cylinder rises to heat suction gas and reduces compressor efficiency. SOLUTION: A communication hole 5 for allowing a compression mechanism section to communicate is formed only in the vicinity of the suction opening 4 of the compression mechanism section. Thereby, oil accumulated in the upper portion of an upper bearing 2 is led to flow out to the periphery of the upper bearing 2, and finally led to flow into the communication hole 5 formed in the vicinity of the suction opening 4. Since the oil passes through while being in contact with the communication hole 5, the heat exchange is performed between the high-temperature compression mechanism section and the oil and an effect of lowering temperature in the vicinity of the suction opening 4 is provided. Thereby, it is possible to suppress heating of suction gas and to prevent efficiency degradation. COPYRIGHT: (C)2011,JPO&INPIT
|
