公开(公告)号：EP3098541A4

公开(公告)日：2017-03-15

申请号：EP15754816

申请日：2015-02-10

申请人： MAEKAWA SEISAKUSHO KK

发明人： KATAOKA MASAKI ,  ONO YUJI ,  YOKOYAMA TAKASHI ,  WATANABE HIROSHI

IPC分类号： F25B5/02 ,  F24D17/02 ,  F24H1/00 ,  F24H4/02 ,  F25B1/00 ,  F25B9/00 ,  F25B40/00 ,  F25B41/00 ,  F25B41/04 ,  F25B49/02

CPC分类号： F25B5/02 ,  F24D17/02 ,  F24H4/02 ,  F25B9/008 ,  F25B40/00 ,  F25B41/04 ,  F25B49/02 ,  F25B2309/061 ,  F25B2339/047 ,  F25B2400/01 ,  F25B2400/0415 ,  F25B2400/16 ,  F25B2600/021 ,  F25B2600/2523 ,  F25B2700/1933 ,  F25B2700/197 ,  F25B2700/21151 ,  F25B2700/21161 ,  Y02B30/12 ,  Y02B30/741

摘要： A CO2 water heater includes: a CO2 circulation path 14; a compressor 16, a gas cooler 18 and an expansion valve 20 provided on the CO2 circulation path 14; a bypass passage 30 to bypass the expansion valve 20; a supercritical tank 32 and flow regulating valves (34, 35) provided on the bypass passage 30. The CO2 circulation path 14 has two CO2 branch passages (14b, 14c) branched in a parallel manner between the compressor 16 and a downstream portion of the expansion valve 20. An air-heat-source heat exchanger (22a, 22b) is provided on the CO2 branch passage 14b, and a water-heat-source heat exchanger 24 is provided on the CO2 branch passage 14c. Electromagnetic valves (48, 50) to switch a CO2 flow path to the CO2 branch passage 14b or the CO2 branch passage 14c, and a blower 46 to form an air flow to be sent to the air-heat-source heat exchanger (22a, 22b) are provided.