Daikin Industries, Ltd.

Tetsushi Tsuda

Mitsushi Itano

Daisuke Karube

Kazuhiro Takahashi

Shun Ohkubo

Tatsuya Takakuwa

Yuzo Komatsu

Eiji Kumakura

Yumi Toda

Yoshinari Asano

Makoto Ikeda

Yuuki Yotsumoto

Takeo Abe

Ikuhiro Iwata

Yuuichi Yanagi

Keisuke Ohtsuka

Kazuhiro Furusho

Atsushi Yoshimi

Takuro Yamada

Tatsumi Tsuchiya

Yasufu Yamada

Toshiyuki Maeda

Masaru Tanaka

Keiji Aota

Hitomi Kuroki

Kenji Gobou

Tomoyuki Gotou

Tadashi Hirose

Akihito Mizuno

Atsushi Matsubara

Shinjiro Domi

Kousuke Tsuboi

Akio Tasaka

Shimei Tei

Tomomi Kukita

Kenji Kita

Yoshihiro Kitaura

Yuuichi Kita

Yoshikazu Nakao

Naveen Gunturu

Hisanori Ohshima

Seiichi Sakai

Naoko Kuriyama

Naoki Matsumura

Yu Ota

Akiko Shirai

Kenji Amano

Xianglian Li

A refrigeration cycle device for a vehicle includes a refrigerant circuit, in which a zeotropic refrigerant mixture is circulated, including a utilization heat exchanger including a first heat exchange portion and a second heat exchange portion disposed in series with the first heat exchange portion in a direction in which the zeotropic refrigerant mixture flows in the refrigerant circuit. The first heat exchange portion is disposed on an upstream side of the second heat exchange portion in a direction in which the zeotropic refrigerant mixture flows when the utilization heat exchanger functions as an evaporator of the zeotropic refrigerant mixture.

Refrigeration cycle device for vehicle

In an air conditioner that uses a refrigerant mixture containing at least 1,2-difluoroethylene, high efficiency is achieved. In the air conditioner (), a compressor () can be driven without interposing a power conversion device between an AC power source () and a motor (). Thus, it is possible to provide the air conditioner () that is environmentally friendly and has a relatively inexpensive configuration.

Air conditioner

No studies have been made regarding what kinds of refrigerants should be used in a refrigeration cycle device for a vehicle. An air conditioner () for a vehicle includes a refrigerant circuit () and a refrigerant that is sealed in the refrigerant circuit (). The refrigerant circuit () includes a compressor (), a first heat exchanger (), which serves as a heat dissipater in a dehumidifying heating mode, an outside-air heat exchanger (), a cooling control valve (), and a second heat exchanger (), which serves as an evaporator in the dehumidifying heating mode. The refrigerant is a refrigerant having a low GWP.

A setting facilitation apparatus () includes a keyword input reception section (), a control command selection section (), and a specific control registration section () and is used to facilitate setting of specific control in a control system () that controls a control device through sound inputs. The keyword input reception section () receives an input of information corresponding to a keyword. The control command selection section () displays a certain control command to the control device () on an edit screen (G) and receives selection of the control command. The specific control registration section () registers a keyword (K) input by the keyword input reception section () and the control command selected by the control command selection section () to a specific control (DBT) while associating the keyword and the control command with each other.

Device control system

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

An air conditioning apparatusincludes a compressor (), an indoor heat exchanger () that is a use-side heat exchanger that exchanges heat with first air (F), an outdoor heat exchanger () that is a heat-source-side heat exchanger that exchanges heat with second air, a refrigerant, a first duct (), and a casing (). The refrigerant contains at least 1,2-difluoroethylene, and circulates in the compressor (), the indoor heat exchanger (), and the outdoor heat exchanger () to repeat a refrigeration cycle. The first duct () supplies the first air (F) to a plurality of rooms in an interior. The casing () includes a use-side space (SP) that is connected to the first duct () and that accommodates the indoor heat exchanger (). The casing () is configured to allow the first air (F) after heat exchange with the refrigerant at the indoor heat exchanger () to be sent out to the first duct ().

Air conditioning 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 ().

Growing community of inventors

Osaka, Japan

Tetsushi Tsuda