| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a refrigerant circuit device using an internal intermediate pressure two-stage compressor capable of providing on-site service such as additional charging of a refrigerant. <P>SOLUTION: This refrigerant circuit device is provided with at least a refrigerant circuit received in a housing in a state of constituting a refrigerating cycle by using the internal intermediate pressure two-stage compressor 1 having a low stage-side compressing portion 11 and a high stage-side compressing portion 12 in a sealed container 1a in a state of communicating a discharge side of the low stage-side compressing portion 11 with the sealed container 1a, and further communicating with a suction side of the high stage-side compressing portion 12 from the inside of the sealed container 1a of intermediate pressure through an intermediate pressure connection pipe 6. Here, a first service pipe 7a connected with the intermediate pressure connection pipe 6 at one end, a second service pipe 7b connected with a high pressure side or a low pressure side of the refrigerant circuit at one end, a first service port connected with the other end of the first service pipe 7a, and a second service port connected with the other end of the second service pipe 7b are provided. <P>COPYRIGHT: (C)2008,JPO&INPIT |
