| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain an air conditioning device for reducing the level of refrigerant flow sound produced in a throttle device of a unit on load side. <P>SOLUTION: When a part of a plurality of units B1, B2 on load side is in a heating operation and the other part of the load-side units is in a non-heating operation such as operation stop or air blowing operation, the opening degree of the throttle device of the load-side units in a non-heating operation is set smaller than in a heating operation and bigger than in a fully-closed state, and the opening degree of a second throttle device 50 is set such that the superheat degree of a refrigerant at an outlet of an heat exchanger 3 on heat-source side becomes the minimum within a positive value range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
