| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil separator which improves an oil separation performance, improves mass-productivity, is low-priced and improves pressure resistance.SOLUTION: A cylindrical oil separator comprises, in an upper part of an oil storage chamber, a separation chamber which is formed with a diameter equal to or smaller than that of the oil storage chamber. In the oil separator, an oil feed pipe is connected to a lower-end diameter-reduced part of the oil storage chamber, a discharge pipe is connected to an upper-end diameter-reduced part of the separation chamber, further, an inflow pipe for a two-phase flow of oil and a gas refrigerant is introduced from a tangential direction of a separation chamber rising wall, and oil in the refrigerant is separated within the separation chamber using a centrifugal force. When an average height of a space formed from an upper end portion of the inflow pipe, an inner surface of a rising wall higher than the upper end portion of the inflow pipe and an inner surface of a ceiling wall is defined as Hm and an inner diameter of the separation chamber is defined as Di, Hm/Di≤0.25 is satisfied. The separation chamber is configured by contraction, forging or pressing and further the rising wall and the ceiling wall of the separation chamber are configured integrally or separately. |
