| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an environmentally friendly refrigerating device having excellent reliability of a bearing of a driving shaft of a turbo-compressor. <P>SOLUTION: As a refrigerant of a refrigerant circuit (11) for compressing the refrigerant by the turbo-compressor (40), a refrigerant represented as a molecular formula: C<SB>3</SB>H<SB>m</SB>F<SB>n</SB>and having one double bond in the molecular structure or a mixed refrigerant including the refrigerant is used, wherein m and n are integer numbers of ≥1 and ≤5 and a relationship m+n=6 is achieved. <P>COPYRIGHT: (C)2010,JPO&INPIT |
