| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform a defrosting operation without installing a heating unit exclusively used for defrosting such as a heater, in a refrigerating device in which an one-system utilization-side heat exchanger is connected in parallel with a compressor and a heat source-side heat exchanger. <P>SOLUTION: In this refrigerating device, a low-pressure port 11a sucking a low pressure refrigerant, and an intermediate-pressure port 11b sucking an intermediate-pressure refrigerant are disposed in the compressor 11. A switching mechanism 12 constituted to switch a first position for making a discharge port of the compressor 11 communicate with a gas-side end of the heat source-side heat exchanger 13, and making a gas-side end of an utilization-side heat exchanger 42 of a second system communicate with a first suction port 11a of the compressor 11, and a second position for making the discharge port communicate with the gas-side end of the utilization-side heat exchanger 42 of the second system is arranged in a refrigerant circuit 10, and the gas-side end of the utilization-side heat exchanger 32 of the first system is connected with a second suction port 11b. <P>COPYRIGHT: (C)2010,JPO&INPIT |
