Abstract: An air conditioning apparatus includes a casing, a heat exchanger and a blower. In the casing, an intake port is formed and a blow-off port is formed in a top surface section. The heat exchanger and the blower are housed in the casing. The blower is caused to rotate while a flammable refrigerant flows to the heat exchanger during an operation, an intake air is taken into the casing from the intake port, a heat exchange is carried out between the flammable refrigerant and the intake air in the heat exchanger, and the heat-exchanged air is blown out from the blow-off port to an exterior of the casing. A first refrigerant sensor that detects the flammable refrigerant is disposed on a downwind side of the heat exchanger inside the casing.

Abstract: A heat-recovery-type refrigerating apparatus includes a compressor, a heat-source-side heat exchanger, and a plurality of usage-side heat exchangers, and refrigerant is sent from the usage-side heat exchanger functioning as a refrigerant radiator to the usage-side heat exchanger functioning as a refrigerant evaporator, whereby heat can be recovered between the usage-side heat exchangers. Here, a portion of the heat-source-side heat exchanger is configured as a precooling heat exchanger for always circulating high-pressure vapor refrigerant discharged from the compressor, and a refrigerant cooler for cooling an electrical equipment item is connected to a downstream side of the precooling heat exchanger.

Abstract: An air conditioning apparatus includes a casing, a heat exchanger and a blower. In the casing, an intake port is formed and a blow-off port is formed in a top surface section. The heat exchanger and the blower are housed in the casing. The blower is caused to rotate while a flammable refrigerant flows to the heat exchanger during an operation, an intake air is taken into the casing from the intake port, a heat exchange is carried out between the flammable refrigerant and the intake air in the heat exchanger, and the heat-exchanged air is blown out from the blow-off port to an exterior of the casing. A first refrigerant sensor that detects the flammable refrigerant is disposed on a downwind side of the heat exchanger inside the casing.

Abstract: A heat-recovery-type refrigerating apparatus includes a compressor, a heat-source-side heat exchanger, and a plurality of usage-side heat exchangers, and refrigerant is sent from the usage-side heat exchanger functioning as a refrigerant radiator to the usage-side heat exchanger functioning as a refrigerant evaporator, whereby heat can be recovered between the usage-side heat exchangers. Here, a portion of the heat-source-side heat exchanger is configured as a precooling heat exchanger for always circulating high-pressure vapor refrigerant discharged from the compressor, and a refrigerant cooler for cooling an electrical equipment item is connected to a downstream side of the precooling heat exchanger.

Abstract: A heat recovery refrigeration device includes a compressor, a plurality of heat source side heat exchangers, and a plurality of usage side heat exchangers. The heat exchangers are switchable between individually functioning as an evaporator or a radiator. The heat recovery refrigeration device performs heat recovery between the usage side heat exchangers by sending the refrigerant from at least one of the usage side heat exchangers functioning as a radiator to at least one of the usage side heat exchangers functioning as an evaporator. The plurality of heat source side heat exchangers include a first heat source side heat exchanger and a second heat source side heat exchanger. The second heat source side heat exchanger has a heat exchange capacity 1.8 times to 4.0 times of the first heat source side heat exchanger.

Abstract: In an outdoor unit, an electric component unit includes an inlet part which communicates with an outlet side of an air blower and through which air on the outlet side flows into the electric component unit, and an outlet part which communicates with an inlet side of the air blower and through which air flows out from the electric component unit.

Abstract: An outdoor unit includes a casing having a side surface formed with an inlet port; an outdoor fan arranged above the inlet port in the casing and configured to upwardly blow air; and an outdoor heat exchanger arranged so as to face the inlet port. The outdoor fan includes a fan and a bell mouth provided so as to surround the outer periphery of the fan, and an electric component unit positioned at the periphery of the bell mouth is arranged in the casing.

Abstract: In an outdoor unit, an electric component unit includes an inlet part which communicates with an outlet side of an air blower and through which air on the outlet side flows into the electric component unit, and an outlet part which communicates with an inlet side of the air blower and through which air flows out from the electric component unit.