| 摘要 |
PROBLEM TO BE SOLVED: To provide a vapor compression type heat pump in which a refrigerant condensed in a compressor is vaporized before the compressor is started, thereby preventing poor lubrication and liquid compression when the compressor is started.SOLUTION: A heat pump comprises: compressor heating means 21 for heating a compressor 2; a pressure sensor 38 for detecting a pressure on the side where an oil reservoir 12 is arranged, which is the suction side or the discharge side of the compressor 2; and a temperature sensor 39 for detecting a temperature on the side where the oil reservoir 12 of the compressor 2 is arranged. Before the compressor 2 is started, the compressor 2 is heated by the compressor heating means 21 so that a temperature detected by the temperature sensor 39 is higher than a saturated temperature corresponding to a pressure detected by the pressure sensor 38. |
