Abstract: A mandrel 10 for producing a thin-walled bent tube having a bending portion with high strength and a small radius of curvature by rotary draw bending without either cracks in an outside of bend or wrinkles and buckling in an inside of bend occurring includes a shank 14, a connection mechanism 15 and a mandrel ball 16. In a cross-section orthogonal to an axial direction of the mandrel ball 16 at a central position in the axial direction of the mandrel ball 16, the mandrel ball 16 has a first position 19 and a second position 20 at which a first straight line m that passes through a mandrel ball center 17 meets an outer periphery 21 of the mandrel ball. Further, a ratio (L1/L2) between a dimension L1 from the mandrel ball center 17 to the first position 19 and a dimension L2 from the mandrel ball center 17 to the second position 20 is in a range of 0.915 to 0.976.

Abstract: There is provided an automatic analyzer that keeps a temperature of alight emitting element of alight source constant and has high accuracy analysis performance. A light source for an automatic analyzer includes: a substrate including a light source; a temperature adjustment unit configured to adjust a temperature of the light source; a first optical element configured to emit light from the light source to an outside; and a member configured to cover the light source, in which the temperature adjustment unit, the substrate, the member, and the first optical element are arranged in this order, the optical element is assembled so as to be accommodated in the member, and the temperature adjustment unit puts the light source, the member, and the optical element under the same temperature control.

Abstract: According to one embodiment, the air conditioner comprises an outdoor unit, an indoor unit, a refrigerant cutoff unit, an airtight state detection unit, a notification unit, and a control unit. The control unit determines a refrigerant cutoff condition for whether or not to urge a flow of the refrigerant flowing into and from the indoor unit to be cut off and, if the refrigerant cutoff condition is satisfied, urges the refrigerant cutoff unit to cut off the flow, and urges the notification unit to notify a detection result of an airtight state of a pipe detected by the airtight state detection unit, in the indoor unit in which the flow of the refrigerant is cut off.

Abstract: According to one embodiment, a refrigeration cycle apparatus includes a main flow channel of a refrigerant, a compressor, a condenser, an evaporator, a branch channel, an expansion valve, a supercooling heat exchanger, an injection flow channel, and a control unit. The control unit determines, based on whether the determination condition is satisfied or not, a determination condition for adjusting an opening degree of the expansion valve and adjusts the opening degree of the expansion valve according to a first target value for a discharge temperature of the refrigerant from the compressor, or a second target value for a superheat degree of the refrigerant flowing through the injection flow channel.

Abstract: According to one embodiment, an air conditioner carries out a heating operation, a cooling operation, a cooling/heating mixed operation in which a higher priority is given to cooling, and a cooling/heating mixed operation in which a higher priority is given to heating.

Abstract: A refrigeration cycle device of the embodiment includes a refrigerant flow path. The refrigerant flow path allows a refrigerant to flow through a compressor, a condenser, an expansion device, and an evaporator. The refrigerant contains CF3I. The refrigerant flow path includes a filter capable of capturing iodine ions.