Refrigerant compressor and pressure-resistant vessel

摘要

A refrigerant compressor improved in pressure-resistant strength of a closed vessel. In a prior-art refrigerant compressor, a three-phase integral type sealed terminal in which three pins connected to a three-phase power source are disposed on one metal base portion, is attached to a body portion of a closed vessel for supplying electric power to an electric motor. When a high hydrostatic pressure load is applied to the closed vessel, the closed vessel is deformed into a barrel shape, and the sealed terminal pulled in the circumferential direction due to the deformation of the closed vessel is deformed elliptically. There may arise a problem with a glass material for insulating the metal base portion from the pins. To solve the problem, three small-diameter sealed phase terminals independent of one another are disposed in a body portion of a closed vessel for supplying electric power to an electric motor unit. The terminals are aligned substantially in a line in the circumferential direction of the body portion of the closed vessel.