| 摘要 |
PURPOSE:To extend a function by closing a valve device and a second flow rate control device by a driving unit upon operation interruption. CONSTITUTION:A title device comprises a branch part 10 including valve devices 8a, 8b each for switchably connecting one sides of a plurality of indoor side heat exchangers 5 to connection pipings 6b-6d or connection pipings 7b-7d, a branch part 11 connected via a flow rate control device 9 to the other sides of the plurality of the indoor side heat exchangers 5 and connected via a flow rate control device 13 to connection pipings 7b-7d, and a driving device 22 for driving the valve devices 8a, 8b and the flow rate control device 13. Upon operation interruption, the valve devices 8a, 8b and the flow rate control device 13 are closed by the driving device 22. Hereby, cooling and heating are optionally performed, i.e., cooling in the one indoor machines and heating in the other indoor machines are simultaneously performed. Further, there is eliminated inclusion of a big volume of a refrigerant into the compressor upon the operation interruption, and there is prevented fluid back operation from an accumulator. |
