Abstract: A heat exchanger includes a plurality of fins extending along upper and lower directions, and a flat tube extending crosswise to the plurality of fins. Each of the plurality of fins has a first side edge portion and a second side edge portion, the first side edge portion and the second side edge portion extending along the upper and lower directions. The flat tube has end portions in the longitudinal axis direction of the flat tube, the end portions including a first end portion and a second end portion. The first end portion is positioned closer to the first side edge portion than the second end portion is to the first side edge portion.

Abstract: The purpose of the present invention is to provide a palladium plating solution and a plating method for improving a bath stability of a palladium plating, without decreasing a deposition property of the palladium plating. A palladium plating solution for improving a bath stability, without decreasing a deposition property, comprising: an aqueous palladium compound; one or more complexing agent containing a compound having at least an ethylenediamine or a propylenediamine skeleton; a formic acid or a formate; and a sulfur compound, wherein the palladium plating solution is having two or more sulfide groups in a molecule of the sulfur compound.

Abstract: A heat exchanger includes a fin having a first through hole into which a first heat transfer tube is inserted and a second through hole into which a second heat transfer tube is inserted and including a first end portion and a second end portion, in which a virtual straight line passing through end portions on the first end portion side of the first heat transfer tube and the second heat transfer tube is a first virtual straight line, a virtual straight line passing through end portions on the second end portion side of the first heat transfer tube and the second heat transfer tube is a second virtual straight line, a region between the first end portion and the first virtual straight line is a first drainage region, a region between the second end portion and the second virtual straight line is a second drainage region, and a region enclosed by the first heat transfer tube, the second heat transfer tube, the first virtual straight line and the second virtual straight line is a water introducing region, a fir

Abstract: A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus are provided where heat exchange performance is improved, and drainage properties and resistance against frost formation are improved. A flat tube and a plurality of fins that are each a plate having a plate surface extending in a longitudinal direction and in a width direction orthogonal to the longitudinal direction are provided. The plate surface intersects a pipe axis of the flat tube, and the plurality of fins are arranged at an interval from one another. The plurality of fins each have a first spacer formed in the plate and maintaining the interval. The flat tube has a longitudinal axis of a section perpendicular to the pipe axis, and the longitudinal axis is inclined to the width direction by an inclination angle ?. The first spacer has a standing surface extending in a direction intersecting the plate surface.

Abstract: A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus improve a heat exchange performance, a discharge performance, and a frosting resistance, and each include: a flat tube; a fin formed in the shape of a plate having a plate surface extending in a longitudinal direction of the fin that is perpendicular to a width direction thereof, coincides with an up/down direction, and crosses the tube axis of the flat tube; and a first water conveyance member provided below the fin.

Abstract: A heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus are provided where deterioration in drainage and ventilation properties is prevented, an air passage is not easily clogged when frost forms, and both defrosting properties and heat exchange performance are achieved. A flat tube and a plurality of fins that are each a plate having a plate surface extending in a longitudinal direction and in a width direction orthogonal to the longitudinal direction are provided. The plate surface intersects a pipe axis of the flat tube. The plurality of fins each have an insertion portion in which the flat tube is inserted, a first spacer formed at a rim of the insertion portion and maintaining the interval, and a second spacer formed at a portion of the plate other than the rim of the insertion portion and maintaining the interval.

Abstract: A distributor includes a first member having a plurality of first through holes spaced apart from each other in the first direction, a second member having a first groove facing each of the plurality of first through holes, and a third member having at least one second groove facing at least one of the plurality of first through holes. The first groove extends in the first direction. The first space inside a groove is connected to a second space inside at least one second groove through a third space inside each of the plurality of first through holes. The third space is higher in flow path resistance than the first space and the second space.

Abstract: An auxiliary heat exchange unit of a heat exchanger has a first auxiliary heat exchange region and a second auxiliary heat exchange region. A main heat exchange unit has a first main heat exchange region, a second main heat exchange region, a third main heat exchange region, and a fourth main heat exchange region. The auxiliary heat exchange unit and the main heat exchange unit are configured to cause refrigerant to flow successively through the first auxiliary heat exchange region, the second auxiliary heat exchange region, the first main heat exchange region, the second main heat exchange region, the fourth main heat exchange region, and the third main heat exchange region when the heat exchanger functions as an evaporator.

Abstract: An information display terminal comprises a display controller configured to determine a range to be used by an image display device to display an image on a mirror surface and a sensor unit configured to detect an ambient condition. The display controller determines the range to be used to display an image on the mirror surface using information detected by the sensor unit. The information display terminal is a mirror display having a mirror function on a display surface as well as a function of displaying an image or information on an entire surface or a portion of the mirror surface so that it can provide information while keeping convenience as a mirror.

Abstract: A distributor includes a first member having a plurality of first through holes spaced apart from each other in the first direction, a second member having a first groove facing each of the plurality of first through holes, and a third member having at least one second groove facing at least one of the plurality of first through holes. The first groove extends in the first direction. The first space inside a groove is connected to a second space inside at least one second groove through a third space inside each of the plurality of first through holes. The third space is higher in flow path resistance than the first space and the second space.

Abstract: An object is to provide a heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus in which frost melt water is inhibited from reaching an upper surface of a header and the heat exchange performance and the reliability are improved. The invention includes: a plurality of heat transfer tubes arranged in parallel with each other; a fin connected to at least one of the plurality of heat transfer tubes; and a header having a header end surface being a surface along a direction in which the plurality of heat transfer tubes are arranged in parallel with each other, the header being connected to one end portions of the plurality of heat transfer tubes.

Abstract: The present invention provides an electroless gold plating bath having excellent plating bath stability without containing a cyanide compound under long term plating bath heating time. An electroless gold plating bath of the present invention solving above problems includes: a water-soluble gold salt; a reducing agent; and a phosphine compound represented by a following formula (1) wherein R1, R2, and R3 represent identically or differently either a phenyl group, or an alkyl group having 1 to 5 carbons, and at least one of the phenyl group or the alkyl group is substituted by a sulfonate group or its salt, a cyano group, or a carboxy group or its salt.

Abstract: A heat exchanger includes a plurality of flat tubes provided to extend in a first direction, and a plurality of plate-shaped fins having respective surfaces extending in a second direction. The surface has a windward edge and a leeward edge. The plurality of flat tubes include a first flat tube disposed most windward in the second direction, and a second flat tube spaced apart from the first flat tube and disposed most leeward in the second direction. In the second direction, a distance between the leeward edge and a center of a flat shape of the second flat tube is at least one-third of a width between the windward edge and the leeward edge.

Abstract: A system display control unit causes a display unit to display a simulated system screen. A symbol selection unit receives a selection of a symbol from a user. A model display control unit causes the display unit to display a plant model in which a component model corresponding to the component represented by the selected symbol is emphasized. A model selection unit receives a selection of a component model from the user. A component information display control unit causes the display unit to display information about the component represented by the selected model.

Abstract: An outdoor heat exchanger of an outdoor unit includes a main heat exchanger portion and an auxiliary heat exchanger portion. In the main heat exchanger portion, refrigerant path groups are formed. In the auxiliary heat exchanger portion, refrigerant paths are formed. The refrigerant path in the auxiliary heat exchanger portion, which is located closest to the main heat exchanger portion, is connected to the refrigerant path group in the main heat exchanger portion, which is disposed in a region where a wind velocity of the outdoor air passing through the main heat exchanger portion is relatively high. In addition, the refrigerant path is connected to the refrigerant path group. The refrigerant path is connected to the refrigerant path group. The refrigerant path is connected to the refrigerant path group.

Abstract: An outdoor heat exchanger includes: a main heat exchange area; a sub heat exchange area; and a connecting pipe and a connecting pipe interconnecting the main heat exchange area and the sub heat exchange area. The main heat exchange area has a main heat exchange channel and a main heat exchange channel. The sub heat exchange area has a sub heat exchange channel, a sub heat exchange channel, and a sub heat exchange channel. The connecting pipe connects the sub heat exchange channel and the sub heat exchange channel to the main heat exchange channel while the sub heat exchange channels are joined together. The connecting pipe interconnects the sub heat exchange channel and the main heat exchange channel.

Abstract: A heat exchanger includes: a plurality of flat tubes arranged in a height direction of the heat exchanger; a connection portion in which a plurality of connection spaces are provided as spaces with which ends of the plurality of flat tubes are connected; and a refrigerant distributor connected to each of the plurality of connection spaces. The flat tubes each have a first side end portion located on a windward side, a second side end portion located on a leeward side, and a plurality of refrigerant passages arranged between the first and second side end portions. Each flat tube is inclined such that in the height direction, the position of the first side end portion is lower than the position of the second side end portion.

Abstract: A refrigeration cycle apparatus includes a refrigerant circuit including a compressor, a condenser, a pressure reducing device, and an evaporator connected by a refrigerant pipe. A refrigerant including a refrigerant having flammability is used as refrigerant circulating in the refrigerant circuit. The evaporator and the pressure reducing device are accommodated in a unit. The evaporator is disposed in the unit in such a manner that a linear distance between a refrigerant inlet of the evaporator and a refrigerant outlet of the pressure reducing device is shorter than a linear distance between a refrigerant outlet of the evaporator and the refrigerant outlet of the pressure reducing device.

Abstract: The purpose of the present invention is to provide a gold plating method and a plating film for preventing a decrease of wire bonding characteristic by a thermal hysteresis by implementation and else. In addition, the purpose of the present invention is to provide a gold plating method and a plating film for preventing a decrease of wire bonding characteristic by a thermal hysteresis by implementation and else, even when a film thickness of a gold plating film is thin. A gold plating method for wire bonding connection by plating using a silver catalyst on a copper or copper alloy film, comprising: a silver catalyst forming step for forming a silver film as the silver catalyst for forming a palladium film; a palladium film forming step for forming the palladium film on the silver catalyst; a gold plating film forming step for forming a gold plating film on the palladium film, wherein a film thickness of the silver film is 0.05 ?m to 0.5 ?m.

Abstract: A heat exchanger includes a fin having a first through hole into which a first heat transfer tube is inserted and a second through hole into which a second heat transfer tube is inserted and including a first end portion and a second end portion, in which a virtual straight line passing through end portions on the first end portion side of the first heat transfer tube and the second heat transfer tube is a first virtual straight line, a virtual straight line passing through end portions on the second end portion side of the first heat transfer tube and the second heat transfer tube is a second virtual straight line, a region between the first end portion and the first virtual straight line is a first drainage region, a region between the second end portion and the second virtual straight line is a second drainage region, and a region enclosed by the first heat transfer tube, the second heat transfer tube, the first virtual straight line and the second virtual straight line is a water introducing region, a fir