Daikin Industries, Ltd.

Kousuke Shiohama

Yoshiteru Nouchi

Nobuyuki Kojima

Ryouta Suhara

Masaaki Murata

Toshimichi Nakayama

Nobuyoshi Kawakami

Masashi Saitou

Yukio Kitade

Tatsuya Toyofuku

Tsuyoshi Kimura

An air conditioner selection system is a system for selecting an air conditioner including an indoor unit. The air conditioner selection system is provided with a floor area acquisition section, an allowable refrigerant amount acquisition section, and an air conditioner selection section. The floor area acquisition section acquires a floor area of a room where the indoor unit is to be installed. The allowable refrigerant amount acquisition section acquires an allowable refrigerant amount of a refrigerant allowed to remain in the room at least based on the floor area acquired by the floor area acquisition section. The air conditioner selection section selects the air conditioner including the indoor unit installable in the room at least based on the allowable refrigerant amount acquired by the allowable refrigerant amount acquisition section.

Air conditioner selection system

A refrigeration apparatus includes a refrigerant circuit including a utilization unit. The utilization unit includes: a heat exchanger; first and second refrigerant pipes connected to the heat exchanger; and first and second shutoff valves each of whose opening degrees are adjustable and which are respectively provided at the first refrigerant pipe and the second refrigerant pipe. The refrigeration apparatus includes: a refrigerant leakage detector; a refrigerant pressure acquiring part; and a controller configured to adjust the opening degrees of the first shutoff valve and the second shutoff valve. In an alert state where the first shutoff valve and the second shutoff valve are both closed and the refrigerant leakage detector detects the leakage, the controller adjusts the opening degree of at least one of the first and second shutoff valves to open when the pressure of the refrigerant is greater than a predetermined threshold value.

Refrigeration apparatus with shutoff valve

An air-conditioning device includes: a suction air temperature sensor provided in an indoor unit; a wireless temperature sensor unit separate from the indoor unit; an abnormal condition determining section determining whether or not the wireless temperature sensor unit is in an abnormal condition; an index setting section setting a temperature index value; and a controller controlling operation of the air-conditioning device based on the set temperature index value. While the abnormal condition determining section determines that the wireless temperature sensor unit is in the abnormal condition, the index setting section determines a measurement value of the suction air temperature sensor to be the temperature index value.

Air-conditioning device

A receiver unit includes: a receiving section receiving a signal of a measurement value (Tm) transmitted from a wireless temperature sensor unit; an input connector connected to a sensor signal line, the sensor signal line being configured to transfer a signal of a measurement value (Tm) of the suction air temperature sensor; a signal generator generating a signal serving as an index of indoor temperature, based on the measurement values (Tm, Tm) of the wireless temperature sensor unit and the suction air temperature sensor; and a signal output section outputting the signal generated by the signal generator to a controller of an air-conditioning device.

Receiver and air-conditioning device equipped with same

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Osaka, Japan

Kousuke Shiohama