| 摘要 |
PROBLEM TO BE SOLVED: To provide an air conditioning device having high reliability, a reduced difference in an amount of oil held by each of accumulators, and an improved oil averaging function.SOLUTION: Accumulators 9a and 9b have output pipes provided with a plurality of second oil return holes at different positions in a vertical direction within a range from a liquid level Ls to a liquid level Ld, where Ms is an amount of oil in the accumulators on the assumption that an amount of oil held by compressors 1a and 1b and oil separators 8a and 8b minus the total amount of sealed oil exists in the accumulators, Ls is the liquid level at that time, ML is an amount of oil when the liquid level in the accumulators is at an upper end of a first oil return hole, Mh is an amount of oil when the liquid level is at an upper end of the second oil return holes, N (N>1) is the number of a plurality of outdoor units, and Ld is the liquid level when the amount of oil is increased from the amount of oil Ms according to (Ms-ML)/(N-1). |
