Title:
HEAT PUMP APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/142796
Kind Code:
A1
Abstract:
A refrigerant that is pressurized in a critical state by a first compressor (31) and a second compressor (32) flows through a first heat radiator (33), a second heat radiator (34), and a third heat radiator (35) in the stated order. A first refrigerant flow path (38) connects the first compressor (31), the second compressor (32), the first heat radiator (33), the second heat radiator (34), the third heat radiator (35), a first decompressor (36), and an evaporator (37). A second refrigerant flow path (39) connects a refrigerant branching part (42) provided between the second heat radiator (34) and the third heat radiator (35) and a refrigerant confluence part (43) provided between the first compressor (31) and the second compressor (32). An internal heat exchanger (41) performs heat exchange between the refrigerant flowing between the refrigerant branching part (42) and the third heat radiator (35) of the first refrigerant flow path (38) and the refrigerant flowing between the second compressor (40) and the refrigerant confluence part (43) of the second refrigerant flow path (39).
Inventors:
TANAKA KOTA (JP)
TAKATSU MASAHIRO (JP)
TAKATSU MASAHIRO (JP)
Application Number:
PCT/JP2017/046011
Publication Date:
August 09, 2018
Filing Date:
December 21, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F25B1/00; F24D3/18; F24H4/02; F25B1/10; F25B6/04
Domestic Patent References:
| WO2010103825A1 | 2010-09-16 |
Foreign References:
| JP2010091135A | 2010-04-22 | |||
| JP2010164291A | 2010-07-29 |
Attorney, Agent or Firm:
YOU-I PATENT FIRM (JP)
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