| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a dual refrigerator capable of preventing lowering of a pressure in a low temperature-side circuit. <P>SOLUTION: In this dual refrigerator 30, a control valve 37 for adjusting the inflow of a first refrigerant to a high temperature-side evaporator 53 is disposed between a high temperature-side expander 40 and the high temperature-side evaporator 53 of a high temperature-side circuit 32, a pressure sensor 64 for detecting a pressure of a second refrigerant is disposed on a prescribed part of the low temperature-side circuit 34, and a control portion 58 is disposed to control the control valve 37 of the high temperature-side circuit 32 to reduce the inflow of the first refrigerant to the high temperature-side evaporator 53, when it is detected that the pressure by the pressure sensor 64 is lower than a prescribed value. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
