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1. (WO2018062188) AIR-CONDITIONING APPARATUS

Pub. No.:    WO/2018/062188    International Application No.:    PCT/JP2017/034761
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Wed Sep 27 01:59:59 CEST 2017
IPC: F25B 1/00
F24F 11/02
F25B 5/00
F25B 5/02
F25B 43/00
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: YAMADA, Takuro
山田 拓郎
NAKAGAWA, Yuusuke
中川 裕介
HONDA, Masahiro
本田 雅裕
OKA, Yuusuke
岡 祐輔
Title: AIR-CONDITIONING APPARATUS
Abstract:
An air-conditioning apparatus provided with a liquid pressure adjustment expansion valve for decompressing refrigerant so that the refrigerant flowing in a liquid refrigerant connection pipe to an outdoor liquid refrigerant pipe connecting the liquid-side end of an outdoor heat exchanger and the liquid refrigerant connection pipe reaches a gas-liquid two-phase state, wherein two-phase delivery of the refrigerant is performed effectively while an increase in the discharge temperature of a compressor is suppressed. A liquid injection pipe (46) for branching a portion of the refrigerant flowing in the outdoor liquid refrigerant pipe (34) and sending the refrigerant to the compressor (21) is connected to the portion of the outdoor liquid refrigerant pipe (34) closer to the outdoor heat exchanger (23) than to the liquid pressure adjustment expansion valve (26).