Abstract: Provided is a heat exchanger, including a plurality of heat exchange members arranged in a first direction so as to be spaced apart from each other. Each of the plurality of heat exchange members includes: a heat transfer pipe extending in a second direction intersecting with the first direction; and a heat transfer plate provided to the heat transfer pipe along the second direction. The heat transfer plate includes extending portions extending away from the heat transfer pipe in a third direction intersecting with each of the first direction and the second direction. The heat transfer plate is formed separately from the heat transfer pipe.

Abstract: There is provided a tube coupling configured to connect and couple two tubes that are configured to cause a fluid to flow inside the two tubes. The tube coupling includes: a male connector including a first pipe configured to cause the fluid to flow inside the first pipe, and an insertion part having a protruding shape protruding in an axial direction that is an insertion direction; and a female connector including a second pipe configured to cause the fluid to flow inside the second pipe, and an insertion receiving part having a recessed shape recessed in the axial direction and coupled to the insertion part when the insertion part is inserted into the insertion receiving part. The insertion part includes a first spring, a first pressing member having a protruding shape, a first seal member having an annular shape, and a first outer peripheral member surrounding the first pressing member.

Abstract: There is provided a tube coupling configured to connect and couple two tubes that are configured to cause a fluid to flow inside the two tubes. The tube coupling includes: a male connector including an insertion part having a protruding shape protruding in an axial direction that is an insertion direction; and a female connector including an insertion receiving part having a recessed shape recessed in the axial direction and coupled to the insertion part when the insertion part is inserted into the insertion receiving part. The insertion part includes a projection disposed on a side surface of the male connector. The insertion receiving part includes a first through hole on a side surface of the female connector. The first through hole extends in a direction inclined with respect to the axial direction, and is configured to allow the projection to move in the first through hole.

Abstract: A light source device includes: a light emitting element; a heat slinger including a first surface in contact with the light emitting element and a second surface opposite to the first surface; a thermoelectric element including a heat absorbing surface in contact with the second surface and a heat radiating surface opposite to the heat absorbing surface, the thermoelectric element producing a temperature difference upon having current flowing in the thermoelectric element; a heat sink in contact with the heat radiating surface; a frame body that is open in a stacking direction of the light emitting element, the heat slinger, the thermoelectric element, and the heat sink, and supports the light emitting element, the heat slinger, the thermoelectric element, and the heat sink in a stacked state; and a sealing member that is filled in the frame body to cover the heat slinger and the thermoelectric element.

Abstract: A heat exchanger includes flat tubes, a header, and a refrigerant inlet. The header has a first plate, a second plate, and a third plate. The first plate has a ridge portion defining a tank space. The second plate has a first flow passage and a second flow passage. The first flow passage extends in such a manner that an area of the first flow passage coincides with an area of the tank space. The second flow passage extends in such a manner that an area of the second flow passage does not coincide with the area of the tank space. An upper portion of the first flow passage and an upper portion of the second flow passage are connected to each other via a first connecting flow passage. A lower portion of the first flow passage and a lower portion of the second flow passage are connected to each other via a second connecting flow passage. The third plate has a communicating hole that allows the first flow passage and each of the flat tubes to communicate with each other.

Abstract: An outdoor unit of an air-conditioning apparatus includes a heat exchange body including a plurality of flat tubes that extend in a vertical direction and that are arranged in a horizontal direction with gaps therebetween. A plurality of the heat exchange bodies are arranged in a direction of air flow to form a heat exchanger. A first header, into which hot gas refrigerant flows from a refrigerant circuit, is provided below one of the plurality of the heat exchange bodies that is at a most upwind position.

Abstract: A laminated header includes: a first passage plate having a flat-plate shape in which a first passage is formed; a second passage plate having a flat-plate shape in which a plurality of second passages are formed; a third passage plate having a flat-plate shape in which a plurality of third passages are formed; a first branch passage plate having a flat-plate shape in which an upstream side branch passage is formed, the upstream side branch passage branching the first passage into the plurality of second passages; and a second branch passage plate having a flat-plate shape in which a downstream side branch passage is formed, the downstream side branch passage branching one of the plurality of second passages into the plurality of third passages.

Abstract: Provided is a heat exchanger, including a plurality of heat exchange members arranged in a first direction so as to be spaced apart from each other. Each of the plurality of heat exchange members includes: a heat transfer pipe extending in a second direction intersecting with the first direction; and a heat transfer plate provided to the heat transfer pipe along the second direction. The heat transfer plate includes extending portions extending away from the heat transfer pipe in a third direction intersecting with each of the first direction and the second direction. The heat transfer plate is formed separately from the heat transfer pipe.

Abstract: A distributor includes a first branch flow path for dividing a first flow path into a plurality of second flow paths, and includes a first communication flow path communicating with the first flow path, a second communication flow path communicating with each of the second flow paths, and a bent portion connecting the first and second communication flow paths. The bent portion includes an inner peripheral wall portion including an inner face having a first radius of curvature, and an outer peripheral wall portion including an inner face having a second radius of curvature larger than the first radius of curvature. The second communication flow path includes an inner wall portion extending from the inner peripheral wall portion of the bent portion, an outer wall portion extending from the outer peripheral wall portion of the bent portion, a base portion and a tip portion.

Abstract: A finless heat exchanger includes two headers and a plurality of heat transfer tubes spaced apart from each other and arranged side by side. The two headers each have a plurality of insertion holes, to which both ends of the heat transfer tubes are fitted and connected. The heat transfer tubes each include straight portions extending in a direction orthogonal to an arrangement direction, in which the heat transfer tubes are arranged, and turning portions. The straight portions and the turning portions are alternately and continuously arranged.

Abstract: A refrigerant distributor has a double-pipe structure including an inner pipe and an outer pipe. A plurality of outer pipes are disposed, each of the plurality of outer pipes being the outer pipe. A space is formed between adjacent ones of the plurality of outer pipes. The inner pipe is disposed to be continuous through the plurality of outer pipes. A plurality of heat-transfer tubes are arrayed in a direction in which the outer pipe extends and connected to the outer pipe. The refrigerant distributor distributes refrigerant flowing into between the inner pipe and the outer pipe to the plurality of heat-transfer tubes.

Abstract: An object is to provide a refrigeration cycle apparatus capable of reducing freezing in a lower part of a heat exchanger in which drainage water tends to accumulate and reducing an amount of refrigerant in a refrigerant circuit. The refrigeration cycle apparatus includes the refrigerant circuit 1 connecting, by refrigerant pipes, a compressor, a first expansion device, and a first heat exchanger configured to serve as evaporator during heating operation. The first heat exchanger is provided with a first heat exchange unit and a second heat exchange unit connected to the first heat exchange unit in series in the refrigerant circuit. The first expansion device is connected in parallel with the second heat exchange unit in the refrigerant circuit, and the second heat exchange unit is placed at a position lower than a position of the first heat exchange unit.

Abstract: A reservoir tank includes: a tank main body configured to store a refrigerant within the tank main body; an inflow path configured to allow the refrigerant to flow into the tank main body; an outflow path configured to allow the refrigerant to flow out of the tank main body; a collision member that has a first surface and faces an outlet of the inflow path within the tank main body, wherein the collision member is configured such that the refrigerant flowing out from the outlet of the inflow path collides against the first surface; and an air bubble mixing prevention member that faces an inlet of the outflow path within the tank main body, wherein the air bubble mixing prevention member is configured to prevent air bubbles from getting into the outflow path.

Abstract: A stacked header branches one flow path into a plurality of flow paths. The stacked header includes an upper end part positioned at an upper end of the stacked header in a gravity direction, a lower end part positioned at a lower end of the stacked header in the gravity direction, and a flow path forming part positioned between the upper end part and the lower end part and having a flow path formed in the flow path forming part. At least one of the upper end part or the lower end part is a non-horizontal face part having a non-horizontal face slanted with respect to a horizontal plane.

Abstract: A light source device includes: a light emitting element; a heat slinger including a first surface in contact with the light emitting element and a second surface opposite to the first surface; a thermoelectric element including a heat absorbing surface in contact with the second surface and a heat radiating surface opposite to the heat absorbing surface, the thermoelectric element producing a temperature difference upon having current flowing in the thermoelectric element; a heat sink in contact with the heat radiating surface; a frame body that is open in a stacking direction of the light emitting element, the heat slinger, the thermoelectric element, and the heat sink, and supports the light emitting element, the heat slinger, the thermoelectric element, and the heat sink in a stacked state; and a sealing member that is filled in the frame body to cover the heat slinger and the thermoelectric element.

Abstract: A heat exchanger includes a plurality of heat transfer tubes arranged at predetermined intervals in a vertical direction, a tubular header that has a plurality of connection portions where the heat transfer tubes are connected to a side portion of the header and that communicates with each of the heat transfer tubes, a refrigerant pipe that communicates with the header at a middle portion of the header in the vertical direction, and a first bypass pipe having ends one of which communicates with a lower portion of the header and the other of which communicates with a middle portion of the refrigerant pipe. A distance between a communication position at which the first bypass pipe and the refrigerant pipe communicate with each other and an inner wall of the header is not more than double an inside diameter of the refrigerant pipe.

Abstract: A distributor includes: a fluid inlet; a plurality of fluid outlets; a distribution flow passage which causes the fluid inlet to communicate with the fluid outlets, and distributes fluid which flows into the distribution flow passage through the fluid inlet, among the fluid outlets; and a plurality of heat-transfer-tube insertion portions each formed to face an associated one of the fluid outlets, the heat-transfer-tube insertion portions allowing heat transfer tubes to be inserted therein. The heat transfer tubes are inserted in the heat-transfer-tube insertion portions such that an end portion of each of the heat transfer tuber is connected to the associated fluid outlet.

Abstract: An outdoor unit of an air-conditioning apparatus includes a heat exchange body including a plurality of flat tubes that extend in a vertical direction and that are arranged in a horizontal direction with gaps therebetween. A plurality of the heat exchange bodies are arranged in a direction of air flow to form a heat exchanger. A first header, into which hot gas refrigerant flows from a refrigerant circuit, is provided below one of the plurality of the heat exchange bodies that is at a most upwind position.

Abstract: A heat exchanger includes flat tubes, a header, and a refrigerant inlet. The header has a first plate, a second plate, and a third plate. The first plate has a ridge portion defining a tank space. The second plate has a first flow passage and a second flow passage. The first flow passage extends in such a manner that an area of the first flow passage coincides with an area of the tank space. The second flow passage extends in such a manner that an area of the second flow passage does not coincide with the area of the tank space. An upper portion of the first flow passage and an upper portion of the second flow passage are connected to each other via a first connecting flow passage. A lower portion of the first flow passage and a lower portion of the second flow passage are connected to each other via a second connecting flow passage. The third plate has a communicating hole that allows the first flow passage and each of the flat tubes to communicate with each other.

Abstract: A refrigerant distributor has a double-pipe structure including an inner pipe and an outer pipe. A plurality of outer pipes are disposed, each of the plurality of outer pipes being the outer pipe. A space is formed between adjacent ones of the plurality of outer pipes. The inner pipe is disposed to be continuous through the plurality of outer pipes. A plurality of heat-transfer tubes are arrayed in a direction in which the outer pipe extends and connected to the outer pipe. The refrigerant distributor distributes refrigerant flowing into between the inner pipe and the outer pipe to the plurality of heat-transfer tubes.