| 摘要 |
PURPOSE:To deminish seizure due to improper clearance between a partitioning plate and a groove, abnormal oscillating and partial great wear in order to improve the reliability of a rotary closed type compressor by maximizing the hardness of a cylinder in the vicinity of the upper dead point of the partitioning plate while by minimizing the deformation of a groove wherein the partitioning plate is positioned. CONSTITUTION:An upper daad point of a partitioning plate 10 exsists almost at the center of two spots of welded spots spaced at the interval of about 120 deg. between an upper bearing 14 and a sealed cylindrical case 1, while compressor fixing means 15, 15 are respectively welded by three protrusions in a peripheral direction of the outer surface of the sealed cylindrical case 1. In this case, the thickness of a cylinder 12 beomes maximum, in its radius direction in the vicinity of the upper dead point of the partitioning plate 10, while even when the cylinder 12 is worked, deformation of a groove 13 is substantially small as the regidity of the cylinder 12 is large. Thus, seizure due to improper clearance between the partitioning plate 10 and the groove 13, abnormal oscillation and partial great wear disappear, whereas the reliability of a rotary closed type compressor is remarkably improved. |
