Abstract: A liquid receiver of a condenser has a liquid receiver main body and a plug removably fitted thereinto. The liquid receiver main body has a refrigerant inflow hole into which refrigerant flows from a condensation section and a refrigerant outflow hole from which refrigerant flows into a supercooling section. The liquid receiver has a first space formed above the upper end of the plug and communicating with the refrigerant inflow hole and a second space formed below the upper end of the plug and communicating with the refrigerant outflow hole. The plug has a flow passage which is open to the first space and the second space at opposite ends. The first-space-side opening of the flow passage is located below the refrigerant inflow hole. The flow passage has a throttle portion whose cross-sectional area is smaller than a hole area of the refrigerant inflow hole.

Abstract: An evaporator includes a first descending flow tube group between a first upper header and a first lower header, and a second descending flow tube group between a second upper header and a second lower header to be located windward of the first descending flow tube group. The first upper header includes a first compartment, and the second upper header includes a third compartment. A flow distribution control section for reinforcement having a refrigerant passage section for communication between the first and third compartments is disposed between the two compartments to extend over the entire lengths and heights of the two compartments. The refrigerant passage section is composed of a plurality of through holes formed in the flow distribution control section for reinforcement. The total area of the through holes is greater than that of the refrigerant passages of the heat exchange tubes of the first descending flow tube group.

Abstract: An evaporator includes a leeward upper header portion, a leeward lower header portion, a refrigerant inlet, leeward heat exchange tubes, a windward upper header portion, a windward lower header portion, a refrigerant outlet, windward heat exchange tubes, and a resistance divider. The resistance divider has at least one refrigerant passage hole and at least one communication path and is provided in the leeward upper header portion or the leeward lower header portion at a position corresponding to a first row of the leeward heat exchange tubes. The refrigerant inlet is in communication with the first row via the at least one refrigerant passage hole. The refrigerant inlet is in communication with the second row via the at least one communication path.

Abstract: An evaporator includes a first descending flow tube group provided between a first upper header and a first lower header, and a second descending flow tube group provided between a second upper header and a second lower header to be located windward of the first descending flow tube group. The first upper header includes a first compartment communicating with the upper end of the first descending flow tube group, and the second upper header includes a third compartment communicating with the upper end of the second descending flow tube group. A first flow distribution control section having a first refrigerant passage section for communication between the first and third compartments is disposed between these compartments. The area of a portion of the first refrigerant passage section on the upstream side is larger than the area of a portion of the first refrigerant passage section on the downstream side.

Abstract: A liquid receiver is composed of a tubular base member having open upper and lower ends, a tubular tank member having a closed upper end and an open lower end and joined to the base member, and a plug fitted into the base member. A female screw is provided on the inner circumferential surface of the base member, and refrigerant inflow and outflow holes are formed in a portion of the base member above the female screw such that the former is located above the latter. A male screw to be screwed into the female screw is provided on the outer circumferential surface of the plug to be located below the refrigerant outflow hole. Sealing is established between a portion of the inner circumferential surface of the base member located below the female screw and a portion of the outer circumferential surface of the plug located below the male screw.

Abstract: A condenser includes a condensation section, a super-cooling section located above the condensation section, and a liquid receiver. The liquid receiver has a first space communicating with the condensation section through a refrigerant inlet and a second space located above the first space and communicating with the super-cooling section through a refrigerant outlet. A partition member is provided in the liquid receiver in order to divide the internal space of the liquid receive into the first space and the second space. A suction pipe which is open at upper and lower ends thereof and which establishes communication between the first space and the second space is disposed in the first space of the liquid receiver. The partition member has an internal volume adjustment portion for increasing the internal volume of the first space and decreasing the internal volume of the second space.

Abstract: A method for manufacturing a heat exchanger includes preparing heat exchange tubes by using an aluminum extrudate made of an alloy containing Mn (0.1 to 0.3 mass %), and Cu (0.4 to 0.5 mass %), the balance being Al and unavoidable impurities; preparing fins by using an aluminum bare material made of an alloy containing Mn (1.0 to 1.5 mass %) and Zn (1.2 to 1.8 mass %), the balance being Al and unavoidable impurities; causing Zn, Si, and flux powders to adhere to the outer surfaces of the heat exchange tubes such that the Zn powder adhesion amount becomes 2 to 3 g/m2, the Si powder adhesion amount becomes 3 to 6 g/m2, and the flux powder adhesion amount becomes 6 to 24 g/m2; and brazing the heat exchange tubes and the fins together by utilizing the Si powder and the flux powder adhered to the outer surfaces of the heat exchange tubes.

Abstract: A liquid-cooled type cooling device includes first and second casings which are capable of being divided in a vertical direction. On a bottom wall part of the second casing, which faces toward fins that are accommodated therein, a plurality of slits are formed, which are recessed in a direction away from the fins. The slits extend in a straight line along a widthwise direction of the second casing substantially perpendicular to a direction in which a coolant medium flows, and are disposed in plurality while being separated at equal intervals along the flow direction.

Abstract: In a liquid-cooled type cooling device, fins are accommodated in the interior of a casing having a supply port and a discharge port, and electronic components that are associated with generation of heat are mounted on a top wall part of a first case unit of the casing. At end portions in a widthwise direction of the fins, cutouts are formed, which are cut out toward the side of a bottom wall part of a second case unit, in facing relation to the top wall part of the first case unit.

Abstract: A heat exchanger includes exchange tubes formed from an aluminum extrudate and fins made of an aluminum bare material. The wall of each heat exchange tube is composed of a main body portion made of an Al alloy forming the aluminum extrudate, and a covering layer made of an Al—Si—Zn alloy and covering the main body portion. A diffusion layer containing Zn and Si diffused from the Al—Si—Zn alloy is formed in an outer surface layer portion of the main body portion. A low potential portion whose spontaneous potential is the lowest, and a high potential portion whose spontaneous potential is 60 mV or more higher than that of the low potential portion, are present within a range between an outermost surface of the wall and a deepest portion of the diffusion layer such that the low potential portion is located toward the outermost surface of the wall.

Abstract: A liquid receiver of a condenser has a liquid receiver main body and a plug removably fitted thereinto. The liquid receiver main body has a refrigerant inflow hole into which refrigerant flows from a condensation section and a refrigerant outflow hole from which refrigerant flows into a supercooling section. The liquid receiver has a first space formed above the upper end of the plug and communicating with the refrigerant inflow hole and a second space formed below the upper end of the plug and communicating with the refrigerant outflow hole. The plug has a flow passage which is open to the first space and the second space at opposite ends. The first-space-side opening of the flow passage is located below the refrigerant inflow hole. The flow passage has a throttle portion whose cross-sectional area is smaller than a hole area of the refrigerant inflow hole.

Abstract: An inlet member having a refrigerant inflow passage which is open at opposite ends is joined to a condensation section inlet header of a condenser. An opening at one end of the refrigerant inflow passage serves as an inflow opening into which externally supplied refrigerant flows, and an opening at the other end serves as an outflow opening from which refrigerant flows out to the condensation section inlet header. The condensation section inlet header has an opening at a position offset from the longitudinal center toward the one end thereof. The inlet member has an insert portion which is inserted into the condensation section inlet header through the opening. The outflow opening of the refrigerant inflow passage is open to a single upward facing flat surface of the insert portion, and is oriented such that the refrigerant flows toward the longitudinal center of the condensation section inlet header.

Abstract: A condenser includes a condensation section, a super-cooling section, and a liquid receiving section. Refrigerant from heat exchange tubes of a first heat exchange path of the condensation section flows into those of a second heat exchange path through the liquid receiving section. The liquid receiving section includes a first space for receiving refrigerant from the heat exchange tubes of the first heat exchange path, a second space which is located above the first space and in which refrigerant from the first space is separated into gaseous and liquid phases, and a third space which is located below the first space, which receives refrigerant from the second space, and from which refrigerant flows to the heat exchange tubes of the second heat exchange path. A first partition member between the first space and the second space has a throttle for refrigerant flowing from the first space into the second space.

Abstract: An evaporator includes a leeward upper header portion, a leeward lower header portion, a refrigerant inlet, leeward heat exchange tubes, a windward upper header portion, a windward lower header portion, a refrigerant outlet, windward heat exchange tubes, and a resistance divider. The resistance divider has at least one refrigerant passage hole and at least one communication path and is provided in the leeward upper header portion or the leeward lower header portion at a position corresponding to a first row of the leeward heat exchange tubes. The refrigerant inlet is in communication with the first row via the at least one refrigerant passage hole. The refrigerant inlet is in communication with the second row via the at least one communication path.

Abstract: A leeward tube row of an evaporator includes first to third tube groups, and a windward tube row thereof includes fourth and fifth tube groups. Within a third section of a leeward upper header portion with which heat exchange tubes of the third tube group communicate, a resistance member for flow division is provided so as to divide the interior of the third section into a first space which the heat exchange tubes face, and a second space which is separated from the first space and into which refrigerant flows. The resistance member for flow division has a plurality of refrigerant passage holes. The leeward upper header portion has a flow cutoff member for preventing flow of refrigerant into the first space of the third section. The third section of the leeward upper header portion communicates with the fourth section of the windward upper header portion via refrigerant communication passages.

Abstract: Provided is a composition for brazing containing a flux, a Zn metal powder, a (meth) acrylic resin, and an organic solvent, in which the organic solvent contains (A1) a monohydric alcohol having 1 to 5 carbon atoms; (A2) a monohydric alcohol having 6 to 8 carbon atoms; and (A3) a polyhydric alcohol having 3 or less carbon atoms that are bonded by a carbon-carbon bond.

Abstract: An evaporator includes a first descending flow tube group between a first upper header and a first lower header, and a second descending flow tube group between a second upper header and a second lower header to be located windward of the first descending flow tube group. The first upper header includes a first compartment, and the second upper header includes a third compartment. A flow distribution control section for reinforcement having a refrigerant passage section for communication between the first and third compartments is disposed between the two compartments to extend over the entire lengths and heights of the two compartments. The refrigerant passage section is composed of a plurality of through holes formed in the flow distribution control section for reinforcement. The total area of the through holes is greater than that of the refrigerant passages of the heat exchange tubes of the first descending flow tube group.

Abstract: An evaporator with a cool storage function includes a plurality of refrigerant flow tubes. The flow tubes are spaced apart from one another in a thickness direction to form spaces among the plurality of refrigerant flow tubes. Outer fins are disposed in a first part of the spaces and are joined to the plurality of refrigerant flow tubes. The cool storage material container contains a cool storage material and is disposed in a second part of the spaces other than the first part. An inner fin is disposed within the cool storage material container and has crest portions extending along a longitudinal direction of the flow tubes, trough portions extending along the longitudinal direction, and connection portions connecting the crest portions and the trough portions.

Abstract: A liquid receiver is composed of a tubular base member having open upper and lower ends, a tubular tank member having a closed upper end and an open lower end and joined to the base member, and a plug fitted into the base member. A female screw is provided on the inner circumferential surface of the base member, and refrigerant inflow and outflow holes are formed in a portion of the base member above the female screw such that the former is located above the latter. A male screw to be screwed into the female screw is provided on the outer circumferential surface of the plug to be located below the refrigerant outflow hole. Sealing is established between a portion of the inner circumferential surface of the base member located below the female screw and a portion of the outer circumferential surface of the plug located below the male screw.

Abstract: An evaporator with a cool storage function includes a first refrigerant flow tube, a second refrigerant flow tube, a cold storage material container, and a heat conductor. The cold storage material container is provided between the first refrigerant flow tube and the second refrigerant flow tube. The heat conductor is provided in the cold storage material container. The heat conductor includes a base plate, first projections, and second projections. The base plate is apart from a first container wall and a second container wall of the cold storage material container. The first projections project from the base plate toward the first container wall to contact the first container wall. The second projections project from the base plate toward the second container wall to contact the second container wall.