| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump device capable of constantly keeping high performance of a compressor and keeping reliability of the compressor without impairing heat exchanging performance. SOLUTION: In this heat pump device provided with a refrigerant circuit constituted by successively connecting the compressor 31, a radiator 32, a main throttling device 33 and an evaporator 34, and an oil separating means 39 disposed at an upstream side of the radiator 32 for separating a refrigerant discharged from the compressor 31 and a lubricant, and allowing the lubricant separated by the oil separating means 39 to flow into the compressor 31, much lubricant can be distributed to a mechanism portion as the lubricant discharged from the compressor 31 flows to a suction-side of the compressor 31 without hardly flowing to a refrigerant circulating circuit, the quantity of lubricant can be secured even in a high-temperature hot water supply operation, and sealability of a clearance of the mechanism portion is improved, so that sufficient compression can be performed and the operation of high efficiency can be performed. COPYRIGHT: (C)2007,JPO&INPIT
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