| 摘要 |
PURPOSE:In a machine where refrigerator oil after lubricating a bearing is discharged into an intermediate pressure chamber then returned to a suction pressure section, to lower volume efficiency and to improve performance by cooling refrigerator oil after lubricating a bearing then discharging to the intermediate pressure chamber. CONSTITUTION:In a fluid machine, fluid such as refrigerant gas sucked into an enclosed space between a fixed scroll 7 through motion of swing scroll 6 is compressed and delivered through a delivery port 7c into an enclosed container 1. Said compressed gas will then pass through paths 7d, 5a where a portion will flow through a path 3a in motor 3 and fed to the outside through a delivery pipe 12 together with remaining compressed gas. Here an intermediate pressure chamber 8 is formed in the frame 5 to discharge refrigerator oil through a communication hole 10, but when returning refrigerator oil in said chamber 8 into suction pressure chamber, discharge oil ports 13, 14 are coupled through an oil discharge pipe 15. Here a cooling fin 17 is provided on said pipe 15 to cool refrigerator oil. |
