Title:
Heat pump heating device
Document Type and Number:
Japanese Patent JP6029879
Kind Code:
B2
Abstract:
A heat pump type heating device includes: an indoor side heat exchanger (26); an outdoor side heat exchanger (27); low-pressure side compressor (31) and high-pressure side compressor (32) sequentially compressing refrigerant sent from the outdoor side heat exchanger (27); a first decompression device (36) decompressing the refrigerant sent from the indoor side heat exchanger (26); a gas-liquid separator (38) separating the refrigerant sent from the first decompression device (36), into a gas phase and a liquid phase; a second decompression device (37) connected to a liquid phase side of the gas-liquid separator (38) and decompressing the refrigerant sent from the gas-liquid separator (38); an injection pipe path (51) connected to a gas phase side of the gas-liquid separator (38) and guiding the refrigerant sent from the gas-liquid separator (38), to between the low-pressure side compressor (31) and the high-pressure side compressor (32); and a control unit (46) controlling a decompression ratio of the refrigerant in the second decompression device (37) such that the refrigerant flowing in the injection pipe path (51) is brought into a gas-liquid two-phase state. With such a configuration, there can be provided a heat pump type heating device having a simple configuration and having sufficiently improved heating ability.
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Inventors:
Motoki Tanimura
Watanabe Kosuke
Shozo Tanaka
Watanabe Kosuke
Shozo Tanaka
Application Number:
JP2012154621A
Publication Date:
November 24, 2016
Filing Date:
July 10, 2012
Export Citation:
Assignee:
Sharp Corporation
International Classes:
F25B1/10; F25B1/00
Domestic Patent References:
| JP2001116373A | ||||
| JP2006177597A | ||||
| JP2007178042A | ||||
| JP2008002688A | ||||
| JP2008032336A | ||||
| JP2009300023A |
Foreign References:
| WO2012032699A1 |
Attorney, Agent or Firm:
Fukami patent office