| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive air conditioning apparatus in which an oil distribution performance of the air conditioning apparatus configured by connecting a plurality of outdoor units is maintained without using an oil equalization pipe and a performance as an air conditioning apparatus can be improved at a maximum.SOLUTION: In an accumulator of an air conditioning apparatus, a first oil return hole is formed as an oil flow rate adjusting mechanism in a lower part of a lead-out pipe within a container. When dryness by the first oil return hole is defined as X1, a first oil return hole diameter is defined as d1, a lead-out pipe inner diameter is defined as D, a compressor maximum oil rising rate is defined as α and a coolant solubility within the accumulator is defined as Cr, the lead-out pipe inner diameter D and the first oil return hole diameter d1 of the accumulator are set to satisfy d1=A×(D), 0.1<A<0.16 and α<(1-X1)×(1-Cr), and an inner diameter and a length of a capillary tube of an oil return circuit are set to satisfy (flow rate of oil flowing in the oil return circuit)≥(flow rate of oil returned to the compressor by the first oil return hole of the accumulator), such that the surplus oil is stored in the accumulator at all the time. |
