Title:
ＣＯ２給湯器
Document Type and Number:
Japanese Patent JP6301684
Kind Code:
B2
Abstract:
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.
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Inventors:
Masaki Kataoka
Yuji Ono
Takushi Yokoyama
Hiroshi Watanabe
Yuji Ono
Takushi Yokoyama
Hiroshi Watanabe
Application Number:
JP2014037563A
Publication Date:
March 28, 2018
Filing Date:
February 27, 2014
Export Citation:
Assignee:
Maekawa Manufacturing Co., Ltd.
International Classes:
F25B1/00; F24H4/02; F25B5/02; F25B30/02; F25B41/00
Domestic Patent References:
| JP2006125769A | ||||
| JP2007303807A | ||||
| JP2011521194A | ||||
| JP2010281552A | ||||
| JP2012037203A | ||||
| JP2010236725A | ||||
| JP2014020766A | ||||
| JP2010012949A | ||||
| JP2009133543A | ||||
| JP2011169584A | ||||
| JP297847A |
Attorney, Agent or Firm:
Seishin ip patent business corporation