Abstract: An object is to provide a novel multi-stage refrigeration apparatus. The object is achieved by a refrigeration apparatus comprising a user-side heat transfer cycle that includes a user-side compressor, a user-side heat exchanger, a user-side pressure-reducing device, and a user-side cascade heat exchanger, and that circulates a user-side refrigerant; a heat-source-side heat transfer cycle that includes a heat-source-side compressor, a heat-source-side heat exchanger, a heat-source-side pressure-reducing device, and a heat-source-side cascade heat exchanger, and that circulates a heat-source-side refrigerant; a cascade heat exchanger configured to exchange heat between the user-side refrigerant of a user-side condenser and the heat-source-side refrigerant of a heat-source-side evaporator; and a control device, the user-side refrigerant having a boiling point of -30° C. or more and 25° C. or less, and the heat-source-side refrigerant having a boiling point of -55° C. or more and less than -30° C.

Abstract: A refrigerant cycle apparatus includes a first heat source unit, a utilization unit, and a connection pipe. An installation method includes a refrigerant recovery step of recovering a first refrigerant having a first GWP and one or both of flammability and toxicity from the first heat source unit, and a refrigerant accommodation step of accommodating, in the first heat source unit, a second refrigerant recovered and regenerated from an existing facility and having a second GWP and one or both of non-flammability and non-toxicity.

Abstract: The present disclosure provides a composition comprising a refrigerant characterized by having a low GWP and a refrigerating capacity and COP that are equivalent to those of R410A. Specifically, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising difluoromethane (R32) and pentafluoroethane (R125), wherein the total concentration of R32 and R125 is 99.5 mass % or more, and wherein R32 is present in an amount of 53.1 to 56.0 mass %, and R125 is present in an amount of 44.0 to 46.9 mass %, based on the total mass of R32 and R125.

Abstract: In a method of manufacturing a connection structural body where an insulated wire and a crimp terminal are connected by crimping to each other by the crimping section, the crimping section is configured to have a hollow cross-sectional shape, and is formed by arranging a conductor crimping section which crimps a conductor tip and a cover crimping section which crimps a cover tip in this order from a distal end side to a proximal end side in a long length direction, a portion on the distal end side of the crimping section is sealed, and the crimping of the conductor crimping section is started prior to the crimping of the cover crimping section at the time of connecting the crimping section to the wire tip by crimping.

Abstract: An air conditioning apparatus includes a refrigerant circuit, an operation controlling device and a liquid refrigerant accumulation determining device. The refrigerant circuit has an accumulator. The operation controlling device performs normal operation control where each device of the heat source unit and the utilization unit are controlled in accordance with operating load of the utilization unit, and refrigerant quantity determination operation control where properness of quantity of the refrigerant in the refrigerant circuit is determined while performing the cooling operation. The liquid refrigerant accumulation determining device determines whether or not liquid refrigerant is accumulating in the accumulator. When it has been determined that liquid refrigerant is accumulating in the accumulator, liquid refrigerant accumulation control is performed to eliminate liquid refrigerant accumulation in the accumulator.

Abstract: An air conditioning apparatus includes a refrigerant circuit, an operation controlling device and a liquid refrigerant accumulation determining device. The refrigerant circuit has an accumulator. The operation controlling device performs normal operation control where each device of the heat source unit and the utilization unit are controlled in accordance with operating load of the utilization unit, and refrigerant quantity determination operation control where properness of quantity of the refrigerant in the refrigerant circuit is determined while performing the cooling operation. The liquid refrigerant accumulation determining device determines whether or not liquid refrigerant is accumulating in the accumulator. When it has been determined that liquid refrigerant is accumulating in the accumulator, liquid refrigerant accumulation control is performed to eliminate liquid refrigerant accumulation in the accumulator.

Abstract: A tip-up vehicle seat comprises a seat back (11) attached to a vehicle body, a seat bottom (14) displaceable between a retracted position and a available position, a leg member (17) displaceable between a retracted position and a support position, a lock mechanism (18) arranged to hold the seat bottom at the retracted position. The lock mechanism (18) is connected to the leg member (17) through a wire cable (43) so that the lock mechanism (18) is unlocked by rotational movement of the leg member (17) from the retracted position toward the support position to release the restriction to the seat bottom (14).

Abstract: A tip-up vehicle seat comprises a seat back (11) attached to a vehicle body, a seat bottom (14) displaceable between a retracted position and a available position, a leg member (17) displaceable between a retracted position and a support position, a lock mechanism (18) arranged to hold the seat bottom at the retracted position. The lock mechanism (18) is connected to the leg member (17) through a wire cable (43) so that the lock mechanism (18) is unlocked by rotational movement of the leg member (17) from the retracted position toward the support position to release the restriction to the seat bottom (14).