| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve a conventional set of structures regarding refrigerant circuits disposed for a plurality of compression sections, respectively. <P>SOLUTION: A switching valve includes a plurality of switching portions 20a, 20b, 20c and 20d for switching the communicated state of a plurality of ports between a first state and a second state. In the plurality of switching portions, discharge flow paths of second to fourth compression sections are communicated with first ports P4, P7 and P10 of first to third main switching portions 20b, 20c and 20d each having three ports, flowing-in flow paths of first to third internal heat exchangers are communicated with second ports, suction flow paths of first to third compression sections are communicated with third port, first ports P4, P7 and P10 and the second ports are connected in the first state, the first ports P4, P7 and P10 and the third ports are connected in the second state, and these are housed in one casing 11. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
