| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly supply a lubricant to an outdoor unit short of lubrication from the other outdoor unit even in adverse conditions in an air conditioning system having the plurality of outdoor units. <P>SOLUTION: In this air conditioning device 1 comprising the plurality of outdoor units 2A, 2B, refrigerant return pipes 45 of the outdoor units 2A, 2B are respectively connected with each other by an oil balance pipe 46 and an oil pipe 47, so that when the shortage of oil is detected in one of the outdoor units, the oil is allowed to constantly flow from an oil separator 25 to the oil balance pipe 46 from the other outdoor unit, and a refrigerant of high pressure discharged from a compressor 20 is allowed to intermittently flow to the oil balance pipe 46, thus the oil is supplied to the outdoor unit short of the oil through the oil pipe 47. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
