Daikin Industries, Ltd.

Masanori Ukibune

Tetsuya Okamoto

Kebi Chen

Kazushi Hisayama

Atsushi Okamoto

Yoshinobu Tsumura

Masao Ohno

Kouichi Yasuo

Yasuhiro Kouno

Hideho Sakaguchi

Kazuhiro Takahashi

Mitsushi Itano

Eiji Kumakura

Daisuke Karube

Shun Ohkubo

Yuzo Komatsu

Tatsuya Takakuwa

Yuuki Yotsumoto

Masakazu Okamoto

Tim Coessens

Yurika Gotou

Qi Fang

A refrigeration apparatus includes a refrigerant circuit switchable between a first operation of performing a refrigeration cycle in which a first compressor is stopped and a second compressor is driven and a second operation of performing a refrigeration cycle in which the first and second compressors and are driven. The refrigeration apparatus further includes a reduction mechanism configured to reduce a refrigerant flowing into the first compressor while a first condition is satisfied during the first operation. The first condition indicates that an internal pressure of the first compressor is lower than an evaporation pressure of an evaporator.

Refrigerant apparatus

A warm-water generating apparatus () uses, as a refrigerant, a mixed refrigerant containing at least 1,2-difluoroethylene (HFO-1132(E)). The warm-water generating apparatus () includes a compressor (), a heat-source-side air heat exchanger (), an expansion valve (), and a use-side water heat exchanger (). The water heat exchanger () causes the mixed refrigerant flowing therein and first water to exchange heat with each other to heat the first water.

Warm-water generating apparatus

An air-conditioning system includes a refrigerant circuit configured to perform a refrigeration cycle. The refrigerant circuit connects a compressor, a utilization-side heat exchanger that performs air conditioning of an indoor space, and a thermal storage heat exchanger. The air-conditioning system executes a first operation in accordance with a reduction command to reduce commercial power consumption in a whole of the air-conditioning system. The first operation allows the utilization-side heat exchanger to perform air conditioning using the thermal storage heat exchanger as a heat source. The air-conditioning system includes a power reduction section configured to perform a first control in synchronization with timing of a start of the first operation. The first control makes the commercial power consumption in the whole of the air-conditioning system equal to or lower than a first value.

Air-conditioning system including a management section

A water heating system includes: a refrigerant circuit that includes a compressor and in which a refrigerant flows; and a water circuit in which water flows. The refrigerant circuit shares with the water circuit a water heat exchanger that heats the water using the refrigerant discharged from the compressor. The water heat exchanger includes a first heat-exchanging unit in which the refrigerant exchanges heat with the water at a water outlet portion. The refrigerant circuit further includes a heat radiator that is disposed between the compressor and the first heat-exchanging unit and that radiates heat of the refrigerant discharged from the compressor. The heat radiator is configured to radiate heat of the refrigerant to water that flows on an upstream side of the water outlet portion.

Water heating system

A controller performs a first operation in which a heat source device directly or indirectly heats water in a first channel of a heat exchanger and a second operation in which the heat source device directly or indirectly cools the water in the first channel of the heat exchanger after the first operation ends.

Hot water supply apparatus

A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, a second elastic member, a base, and a first elastic member. A first electric component that drives a motor for the compressor and a second electric component that performs another control are fixed to the base and disposed. The base has an upper surface that contacts the first elastic member and a lower surface that contacts the second elastic member. The first electric component and the second electric component are fixed to the upper surface directly or indirectly via a substrate and/or an electric-component casing. Top portions of the first electric component and the second electric component are lower than a top portion of the compressor.

Refrigeration cycle apparatus

In an air-conditioning system including a thermal storage heat exchanger, a refrigerant circuit is configured such that an indoor heat exchanger and a receiver communicate with the thermal storage heat exchanger when an operational mode of the refrigerant circuit is switched to a cooling operation in which the thermal storage heat exchanger serves as a radiator and the indoor heat exchanger serves as an evaporator.

Air-conditioning system

A refrigeration cycle apparatus has a compressor disposed via a bottom member of a housing, second elastic members, a base, and first elastic members. The compressor is disposed close to an arrangement centroid of the second elastic members.

A refrigeration cycle apparatus includes a compressor, a refrigerant cooling pipe, a refrigerant-cycle constituent component, a connecting pipe and vibration transmission suppressing portion that is disposed on the connecting pipe that connects the refrigeration-cycle constituent component or the compressor and the refrigerant cooling pipe to each other.

A refrigeration system includes a refrigerant circuit including a compressor and an expander which expands a refrigerant and generates power, for performing a refrigeration cycle. The refrigeration system includes a compressor control section and an expander control section which, when an operation stop signal is output during operation, reduces a rotational speed of the compressor and increases a rotational speed of the expander to increase the ratio of the rotational speed of the expander to the rotational speed of the compressor.

Growing community of inventors

Osaka, Japan

Masanori Ukibune