| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electromagnetic expansion device and a refrigerating apparatus, capable of improving operation stability. <P>SOLUTION: An air conditioning apparatus 1, having an outdoor electromagnetic expansion valve 24 for adjusting the passage amount of refrigerant, includes a plunger 53, a head 51, a valve seat 63, a solenoid coil 52 and an outdoor control part 72. A current flowing through the solenoid coil 52 is adjusted, and thereby, the degree of opening of the outdoor electromagnetic expansion valve 24 can be adjusted. The outdoor control part 72 performs a control so as to adjust the current to be supplied to the solenoid coil 52. Further, the outdoor control part 72 gradually reduces the power supply amount to the solenoid coil 52 when performing the control for closing the outdoor electromagnetic expansion valve 24. <P>COPYRIGHT: (C)2012,JPO&INPIT |
