| 摘要 |
PURPOSE:To improve the sealing effect of a compression chamber within a wide range from low-speed to high-speed in the rotating number of the compressor and increase the efficiency of the compressor by setting the viscosity of lubri- cating oil. CONSTITUTION:The viscosity of conventional lubricating oil B, used in the atmosphere of flon regrigerant R12, is low. Accordingly, the viscosity of the lubricating oil B during the high rotation of the compressor, in which the temperature of the compressor becomes high, is reduced further and the sealing effect of the compression chamber is reduced. Therefore, lubricating oil A, whose viscosity is 5-7cst and viscosity index is 90-110 under the pressure of 5kg/cm<2> and the temperature of 30 deg.C, is employed to improve the sealing effect of the compression chamber under a high temperature. |
