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    • 3. 发明专利
    • Two-stage compression heat pump cycle device
    • JP5346343B2
    • 2013-11-20
    • JP2010526459
    • 2008-08-27
    • 株式会社前川製作所
    • 洋一 香取祐介 滝沢
    • F25B1/00F25B1/10F25B43/02
    • F25B1/10F25B30/02F25B2400/13F25B2400/23
    • A two-stage compression heat pump cycle device using NH 3 heat as a heat carrier, wherein three kinds of heat carriers in a higher temperature range, a medium temperature range and a lower temperature range can be extracted at the same time while stabilizing extraction of the high-temperature heat-transfer medium. The following configuration is employed for the device. A first heat carrier line (14) is provided in a condenser (13) to generate the high-temperature heat-transfer medium through latent heat exchange of a first heat-transfer medium a with a gaseous heat-transfer medium (NH 3 ) n 1 in the condenser, while a second a heat carrier line (16) is provided in an evaporator (23) to generate the low-temperature heat transfer media through latent heat exchange of second heat-transfer medium c with a liquid heat-transfer medium (NH 3 ) n2 in the evaporator. Further, a first sub-cooling device (15) is interposed between the condenser (13) and an intermediate cooler (18), while a second sub-cooling device (21) is interposed between the intermediate cooler and the evaporator (23), and a third heat carrier line (16) is provided in series with the first sub-cooling device (15) via the second sub-cooling device (21) to generate the medium-temperature heat-transfer medium through sensible heat exchange of third heat-transfer medium b with the liquid heat-transfer medium in the first and second sub-cooling devices.