| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem wherein an operation of a refrigerating unit is difficult to be stabilized and wherein trouble in the refrigerating unit is difficult to be evaded, by detecting a state of an inside of the refrigerating unit, since a state in a refrigerant circuit is difficult to be detected because a composition is included in a quantity of state of a refrigerant, in the refrigerating unit using a nonazeotropic refrigerant mixture. SOLUTION: The circulation composition is detected in the refrigerating unit, and the state in the inside of the refrigerating unit is accurately detected using the circulation composition. The refrigerating unit is constituted to detect directly a value of the quantity of state, when the quantity of state not detected accurately exists because of an error of the detected circulation composition or the like. The trouble in the refrigerating unit is thereby detected accurately, and the state thereof is avoided thereby. COPYRIGHT: (C)2008,JPO&INPIT
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