Abstract: A heat exchanger includes a pair of header tanks and a plurality of heat exchange tubes. The header tank includes the three tank constituting members having laminated portions. Each of the laminated portions is composed of an outer vertical wall portion, an inner vertical wall portion, and an intermediate vertical wall portion. A fillet is formed between an outer surface of the intermediate vertical wall portion with respect to an air-passing direction and an inner surface of the outer vertical wall portion with respect to the air-passing direction. Another fillet is formed between an inner surface of the intermediate vertical wall portion with respect to the air-passing direction and an outer surface of the inner vertical wall portion with respect to the air-passing direction.

Abstract: The wall of each heat exchange tube of a condenser for a car air conditioner is composed of a core material layer, a first brazing material layer covering the outer surface of the core material layer, and a second brazing material layer covering the inner surface of the core material layer. A Zn diffused layer is formed in an outer surface layer portion of the core material layer. The deepest portion of the Zn diffused layer is located at a position 70 to 100 ?m deep from an outermost surface of the wall. The Zn concentration of the outermost surface of the wall of the heat exchange tube is 0.55 mass % or higher. The Zn diffused layer includes a high potential portion whose spontaneous potential is at least 41 mV higher than the spontaneous potential at the boundary between the core material layer and the first brazing material layer.

Abstract: A heat exchanger with a thermal storage function includes a plurality of heat exchange tubes, a plurality of thermal storage material containers, and a first thermal storage material charging member. A circumferential wall of the first thermal storage material charging member is deformed such that a collapsed portion is formed on the first thermal storage material charging member and the thermal storage material charging passage is closed and sealed. The collapsed portion of the first thermal storage material charging member includes a first collapsed part and a second collapsed part. A relation T2<T1?2t is satisfied where “t” represents a thickness of the circumferential wall of an uncollapsed portion of the first thermal storage material charging member, “T1” represents a thickness of the first collapsed part, and “T2” represents a thickness of the second collapsed part.

Abstract: A clad material is composed of a core material, a first skin material covering one side of the core material, a second skin material covering the other side of the core material, and an intermediate material interposed between the core material and the first skin material. The core material is made of an Al alloy containing Cu (0.3 to 0.5 mass %), Mn (0.6 to 1.0 mass %), Ti (0.05 to 0.15 mass %). The first skin material is made of an Al alloy containing Si (7.9 to 9.5 mass %) and Fe (0.1 to 0.3 mass %). The second skin material is made of an Al alloy containing Si (4.5 to 5.5 mass %) and Cu (0.5 to 0.7 mass %). The intermediate material is made of an Al alloy containing Mn (0.2 to 0.4 mass %) and Zn (0.2 to 0.4 mass %).

Abstract: An evaporator with a cool storage function includes a plurality of flat refrigerant flow tubes and at least one cool storage material container. The at least one cool storage material container includes a container main body and a plurality of convex portions. The container main body has a first wall and a second wall opposite to the first wall which are substantially parallel to a plane including a longitudinal direction and a width direction. The first wall and the second wall are connected to adjacent refrigerant flow tubes among the plurality of refrigerant flow tubes, respectively. The plurality of convex portions are provided on the first wall and the second wall to protrude outwardly from the first wall and the second wall. Two adjacent convex portions among the plurality of convex portions form each of condensed water drain passages therebetween.

Abstract: A leeward upper header portion of an evaporator includes first through third sections which communicate with upper ends of heat exchange tubes of first through third tube groups of a leeward tube row. The second tube group, which is an upward flow tube group, and the third tube group, which is a downward flow tube group, form a tube group set. A baffle plate is provided in the second section to be located on the side toward the third section. The baffle plate divides a portion of the interior of the second section into upper and lower spaces and prevents flow of refrigerant toward the upper space. A flow prevention member is provided below the baffle plate so as to prevent flow of refrigerant from the second section into the third section. These two sections communicate with each other in a region above the baffle plate.

Abstract: A cooling unit includes an evaporator with a cool storage function, and a drain case disposed below the evaporator. Cool storage material containers and outer fins of the evaporator have respective outward projecting portions which project from the refrigerant flow tubes toward the leeward side. The drain case includes a condensed water drain portion which drains condensed water generated on the evaporator from at least one of the lower end of the outward projecting portion of each cool storage material container and the lower end of the outward projecting portion of each outer fin. The cooling unit is preferably used in a refrigeration cycle which constitutes an air conditioning apparatus for a vehicle in which an engine serving as a drive source for a compressor is temporarily stopped when the vehicle is stopped.

Abstract: A condenser includes a first header tank which is provided on one side of the condenser, a second header tank which is provided on the one side of the condenser and which has a gas-liquid separation function, and a third header tank provided on another side of the condenser opposite to the one side. First heat exchange tubes extend in an extending direction between the first header tank and the third header tank to connect the first header tank and the third header tank. Second heat exchange tubes are provided below the first heat exchange tubes and extend in the extending direction between the second header tank and the third header tank to connect the second header tank and the third header tank. The second heat exchange tubes are longer than the first heat exchange tubes in the extending direction.

Abstract: The tank main body of a header tank of a condenser has slits formed in a circumferential wall thereof at positions between opposite end surfaces of the circumferential wall and heat exchange tubes at the opposite ends. Plate-shaped closure members are inserted into the slits from the outside of the tank main body and joined to the circumferential wall of the tank main body. Drain openings are formed in the circumferential wall of the tank main body at positions on the outer sides of the closure members as viewed in the longitudinal direction of the tank main body. A portion of a surface of each closure member which faces outward in the longitudinal direction of the tank main body forms a portion of a peripheral edge of the corresponding drain opening.

Abstract: An evaporator with a cool storage function includes a plurality of refrigerant flow tubes, fins, and cool storage material containers. Each of the cool storage material containers has a longitudinal direction and includes a third side wall and a fourth side wall opposite to the third side wall. The third side wall and the fourth side wall have first convex portions and second convex portions, respectively. The cool storage material containers are provided in a second part of spaces such that the first convex portions contact a first side wall of one of the plurality of refrigerant flow tubes and the second convex portions contact a second side wall of another of the plurality of refrigerant flow tubes. The third side wall and the fourth side wall have a concavo-convex shape in a cross-section perpendicular to the longitudinal direction.

Abstract: A first header tank of a condenser serves as a condensation section outlet header section. A second header tank has lower end upper ends respectively located below and above the lower end of the first header tank. A portion of a second header tank located below the lower end of the first header tank serves as a super-cooling section inlet header section. The second header tank also serves as a reservoir section. The interior of the condensation section outlet header section of the first header tank communicates, through a communication section, with a portion of the interior of the second header tank, which portion is located above the lower end of the first header tank. A flow velocity reducing member is provided in the second header tank so as to reduce the flow velocity of liquid-phase dominant refrigerant which flows into the reservoir section through the communication section.

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: Each heat exchange tube of a condenser is formed of a first brazing sheet having a core material and a first brazing material covering the core material. The tank body of each header tank is formed of a second brazing sheet having a core material and a third brazing material covering the core material and being lower in flowability than the first brazing material. In a region of a surface of each protrusion portion facing the corresponding heat exchange tube, the region having a predetermined width as measured from the projecting end, the core materials of the two brazing sheets are brazed together by means of the first brazing material. In the region other than the brazed portion, the core materials of the two brazing sheets are brazed together by means of a fillet formed of a mixture of the first and third brazing materials.

Abstract: A cool storage material container of an evaporator with a cool storage function includes a container main body portion located within the range of a heat exchange core section in the air-passing direction and an outward projecting portion projecting from the container main body portion. A cool storage material containing portion provided in the cool storage material container has a first containing portion which is present in a region where only the container main body portion is provided, and a second containing portion which extends upward from the first containing portion and is present in a region where the container main body portion and the outward projecting portion are provided. The level of a cool storage material is located within the vertical range of the second containing portion in the case where the cool storage material is in liquid phase at ordinary temperature.

Abstract: An evaporator used in a car air conditioner satisfies a a relation of 0.9?P1/P2?1.1, where P1 is the passage cross sectional area of each portion of a refrigerant discharge passage of a refrigerant inlet outlet member of the evaporator, and P2 is the passage cross sectional area of a pipe which establishes communication between a second refrigerant passage of an expansion valve and a compressor. Preferably, relations of W1>W2 and H1>H2 are satisfied, where W1 and H1 are the internal width and height of an upstream end portion of a straight portion of an outward bulged portion of a third plate of the refrigerant inlet outlet member, and W2 and H2 are the internal width and height of a downstream end portion of the outward bulged portion.

Abstract: Each of front and rear side walls of a first member of a tank main body of each header tank of an evaporator has protrusions provided at longitudinal opposite ends thereof and projecting outward in the vertical direction. Front and rear outward projecting walls of a third member are cut away at the longitudinal opposite ends. The third member has protrusions provided at the longitudinal opposite ends of each of the front and rear side walls. Each protrusion is overlappingly located on the inner side of the corresponding protrusion of the first member, and is brazed thereto. Each engagement claw of each end member has a first portion brazed to the outer surface of the corresponding protrusion of the first member, and a second portion bent inward in the front-rear direction such that it engages with the corresponding protrusion, and its distal end is located inward of the outer surface.

Abstract: An air-conditioning apparatus for a vehicle includes an evaporator and a temperature sensor for detecting the temperature of the evaporator. The evaporator includes three tube groups provided in a leeward tube row, and two tube groups provided in a windward tube row. The flow direction of refrigerant within heat exchange tubes of a farthest tube group of the leeward tube row farthest from a refrigerant inlet is the same as that within heat exchange tubes of a farthest tube group of the windward tube row farthest from a refrigerant outlet. A single path is formed by the two farthest tube groups. The temperature sensor is disposed to detect the temperature of a portion of the evaporator where the farthest tube group of the leeward tube row is provided. The air-conditioning apparatus prevents the temperature of air from greatly changing due to turning on and off of a compressor.

Abstract: A condenser includes first and second header tanks provided on one side of the condenser, and a third header tank provided on another side of the condenser. A plurality of second heat exchange tubes extend in an extending direction between the second header tank and the third header tank to connect the second header tank and the third header tank. A plurality of first heat exchange tubes are provided to extend in the extending direction between the first header tank and the third header tank to connect the first header tank and the third header tank. The plurality of first heat exchange tubes are directly connected to the first header tank. The plurality of first heat exchange tubes are longer than the plurality of second heat exchange tubes and are positioned downstream of the plurality of second heat exchange tubes with respect to a flow of refrigerant.

Abstract: Heat exchange tubes of a heat exchanger are formed of an alloy containing Mn (0.2 to 0.3 mass %), Cu (0.1 mass % or less), and Fe (0.2 mass % or less), the balance being Al and unavoidable impurities. A Zn diffused layer is formed in an outer surface layer portion of the peripheral wall of each heat exchange tube. T?200, 0.57?A?1.5, D/T?0.55, and 0.0055?A/D?0.025 are satisfied, where T is the thickness [?m] of the peripheral wall of the heat exchange tube, A is the Zn concentration [mass %] at the outermost surface of the outer surface layer portion, and D is the maximum depth [?m] of the Zn diffused layer. The spontaneous potential of the Zn diffused layer is lower than that of a portion of the peripheral wall located on the inner side of the Zn diffused layer.