Daikin Industries, Ltd.

Yumi Toda

Kazuhiro Takahashi

Mitsushi Itano

Daisuke Karube

Shun Ohkubo

Yuzo Komatsu

Tatsuya Takakuwa

Yuuki Yotsumoto

Tetsushi Tsuda

Takeo Abe

Eiji Kumakura

Yoshinari Asano

Atsushi Yoshimi

Takuro Yamada

Ikuhiro Iwata

Keiji Aota

Keisuke Ohtsuka

Yuuichi Yanagi

Yoshikazu Nakao

A heat exchange unit is provided with which, even if a flammable refrigerant is used, the likelihood of the refrigerant reaching an electric component unit is reduced. An outdoor unit () constitutes a portion of an air-conditioning apparatus (), and is connected to an indoor unit () via a liquid-side refrigerant connection pipe () and a gas-side refrigerant connection pipe (). The outdoor unit () includes an outdoor housing (), an outdoor heat exchanger () disposed inside the outdoor housing () and in which a refrigerant flows, a liquid-side shutoff valve () connected to the liquid-side refrigerant connection pipe (), a gas-side shutoff valve () connected to the gas-side refrigerant connection pipe (), and an outdoor electric component unit () disposed inside the outdoor housing (). The refrigerant is a flammable refrigerant containing at least 1,2-difluoroethylene. When the outdoor unit () is in its installed state, the lower end of the outdoor electric component unit () is positioned above the liquid-side shutoff valve () and the gas-side shutoff valve ().

Heat exchange unit

A refrigeration cycle apparatus () is capable of performing a refrigeration cycle using a small-GWP refrigerant. The refrigeration cycle apparatus () includes a refrigerant circuit () and a refrigerant enclosed in the refrigerant circuit (). The refrigerant circuit includes a compressor (), a condenser (), a decompressing section (), and an evaporator (). The refrigerant contains at least 1,2-difluoroethylene.

Refrigeration cycle apparatus

A refrigeration cycle apparatus that can improve operation efficiency when a refrigerant that contains at least 1,2-difluoroethylene is used is provided. An air conditioning apparatusincludes a compressor (), an outdoor heat exchanger (), an outdoor expansion valve (), an indoor heat exchanger (), and a suction injection pipe (), and uses a refrigerant that contains at least 1,2-difluoroethylene. The suction injection pipe () allows a part of a refrigerant that flows toward the indoor heat exchanger () from the outdoor heat exchanger () to merge with a low-pressure refrigerant that is sucked into the compressor ().

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Osaka, Japan

Yumi Toda