Abstract: A fan shroud 4 is assembled to a cooling module in such a way that the fan shroud 4 covers brackets 3 that have been assembled to the cooling module, that is, a radiator 1 and a condenser 2 and, at the same time, snap fits 3h and a vehicle body prevent the fan shroud 4 from being detached from the brackets 3. In this way, it is possible to easily assemble the cooling module and the fan shroud 4 and, therefore, it is also possible to improve the workability in assembling or disassembling the cooling module and the fan shroud 4.

Abstract: Brackets 3 made of resin are provided between the radiator 1 and the condenser 2, and the heat exchangers 1 and 2 are secured to the brackets 3, so that heat transfer from the radiator 1 to the condenser 2 can be restricted and reduction of the cooling efficiency of the condenser 2 can be prevented. The radiator 1 and the condenser 2 are assembled with and secured to the brackets 3 so that the position of the condenser 2 with respect to the radiator 1 can be easily determined. Therefore, the assembling of the cooling module can be facilitated and no heat exchange between the radiator 1 and the condenser 2 can be restricted due to a predetermined space provided between the core 1c of the radiator 1 and the core 2c of the condenser 2.

Abstract: A bracket (300) is coupled to tank caps (122, 222) of header tanks (120, 220), and the bracket (300) is separably attached to a radiator (200) and a condenser (100) by means of hooks (311, 312) and holes (female screw section) (331) for fixing bolts (330). Thereby, it is unnecessary to provide fixing means in a side plate (130, 230) for fixing the bracket (300) thereto. Accordingly, it is possible to reduce the size and the weight of the side plate (139, 230), and easily attach and detach the radiator (200) and the condenser (100) from a vehicle.

Abstract: Waved uneven portions (112f, 122f) are formed on the protrusion portions (112e, 122e) of the fins (112, 122) protruded from an end of the tubes (111, 121) in the width direction of the tube without cutting part of the protrusion portions (112e, 122e) to increase the surface area of the fins (112, 122). As a result, the surface area of the protrusion portions (112e, 122e) may be increased without decreasing the thermal conductive area extending to the end of the protrusion portions (112e, 122e), and thereby a sufficient amount of heat may be conducted especially to the protrusion portions (112e, 122e), with decreasing airflow resistance, and an improvement in radiation ability appropriate to the increase of radiation area may, accordingly, be achieved.

Abstract: Separators are prevented from being moved from a correct position before completion of soldering. After calking portions 31a, 32a, 43 are plastically deformed and the separator 31, 32 are mechanically fixed on a header tank 40 by calking, the separators 31, 32 are coupled to the header tank 40 by soldering. Thereby, as the separators 31, 32 are prevented from being moved from the correct position with respect to the header tank 40 before completion of soldering, it is possible to prevent defects in soldering where gaps are created in coupled portions.

Abstract: Radiator caps (266) and radiator tubes (211) are heat brazed with an ingot Z of a sacrificial material being disposed in the interior of a radiator tank main body (234), whereby, as the ingot Z of the sacrificial material is heated while being surrounded by the radiator tank main body (234), the evaporated sacrificial material is allowed to adhere to internal surfaces of the radiator tank main body (234) relatively uniformly, the sacrificial material so adhering to the internal surfaces being then allowed to be radiated into aluminum constituting the radiator tank main body (234) to thereby form an alloy layer (a corrosion preventing layer) containing therein the sacrificial material heavily on the internal surface of the radiator tank main body (234).

Abstract: A condenser core portion carries out a heat exchange between refrigerant and air. The condenser core portion includes a plurality of condenser tubes through which the refrigerant flows and condenser fins disposed between each pair of adjacent condenser tubes. A radiator core portion is disposed in series with the condenser core portion in an external fluid flow direction with a predetermined clearance therebetween, to carry out a heat exchange between engine coolant and the air. The radiator core portion includes a plurality of radiator tubes through which the engine coolant flows and radiator fins disposed between each pair of adjacent radiator tubes. A connecting portion integrates each of condenser fins and radiator fins. The condenser fins disposed at an upper area of the condenser core portion introduce cooling performances more than the condenser fins disposed at a lower area thereof.

Abstract: In the fin 112 on the front grille side which is an upstream side of the air current, there is provided a reinforcing portion 112c formed when the fin 112 is made into a wave-shape. By this reinforcing portion 112c, it is possible to prevent the core portion 110 (fin 112) from being deformed by water at high pressure. Therefore, it is possible to reduce the thickness of the fin 112 while the deformation of the fin 112 is prevented even if washing is conducted with water at high pressure.

Abstract: A bracket (300) is coupled to tank caps (122, 222) of header tanks (120, 220), and the bracket (300) is separably attached to a radiator (200) and a condenser (100) by means of hooks (311, 312) and holes (female screw section) (331) for fixing bolts (330). Thereby, it is unnecessary to provide fixing means in a side plate (130, 230) for fixing the bracket (300) thereto. Accordingly, it is possible to reduce the size and the weight of the side plate (139, 230), and easily attach and detach the radiator (200) and the condenser (100) from a vehicle.

Abstract: Two heat exchangers, such as a condenser for cooling refrigerant circulating in an air-conditioner and a radiator for cooling coolant in an internal combustion engine, are combined into a single unit. Both heat exchangers are overlapped in an airflow direction of cooling air. Each heat exchanger has a similar structure composed of a core having plural tubes and fins and a pair of header tanks connected to both ends of the tubes. Two heat exchanges are combined by a side plate disposed on the upper side thereof. The openings of both header tanks are closed with separately formed tank caps and are connected to the side plate through the tank caps. Direct heat transfer from one header tank to the other header tank, e.g., from the radiator tank to the condenser tank, is prevented because both header tanks are connected to the side plate through separate tank caps, thus achieving a high heat radiation capacity in the compound heat exchanger.

Abstract: Waved uneven portions (112f, 122f) are formed on the protrusion portions (112e, 122e) of the fins (112, 122) protruded from an end of the tubes (111, 121) in the width direction of the tube without cutting part of the protrusion portions (112e, 122e) to increase the surface area of the fins (112, 122). As a result, the surface area of the protrusion portions (112e, 122e) may be increased without decreasing the thermal conductive area extending to the end of the protrusion portions (112e, 122e), and thereby a sufficient amount of heat may be conducted especially to the protrusion portions (112e, 122e), with decreasing airflow resistance, and an improvement in radiation ability appropriate to the increase of radiation area may, accordingly, be achieved.

Abstract: Radiator caps (266) and radiator tubes (211) are heat brazed with an ingot Z of a sacrificial material being disposed in the interior of a radiator tank main body (234), whereby, as the ingot Z of the sacrificial material is heated while being surrounded by the radiator tank main body (234), the evaporated sacrificial material is allowed to adhere to internal surfaces of the radiator tank main body (234) relatively uniformly, the sacrificial material so adhering to the internal surfaces being then allowed to be radiated into aluminum constituting the radiator tank main body (234) to thereby form an alloy layer (a corrosion preventing layer) containing therein the sacrificial material heavily on the internal surface of the radiator tank main body (234).

Abstract: A plurality of first projections 113a are provided in a first side wall portion 111a of a grooved section 111 formed by bending part of a sheet-like workpiece to have a U-shaped cross-section, which projections extend away from a connecting portion (top) 111c. Since the first side wall portion 111a deforms to widen a groove width of the grooved section 111 due to spring-back, a tip end of the first projection 113a is first brought into contact with the inner wall 110a. Therefore, a reaction force against the compressive force is applied to the tip end of the first projection during the pre-assembly process. Since the tip end of the first projection 113a is not movable due to the contact with the inner wall 110a, a bending moment is applied to the first side wall portion 111a and the connecting portion 111c to reduce the groove width.

Abstract: A tapered section (128a) and a flange section (129a) constituting reinforcements are respectively provided in mounting members (128, 129) to which a blower (fan shroud) is to be attached, on the sides to be in contact with a longer side wall surface (120c) of a rectangular tank. According to this structure, it is possible to prevent the longer side wall surface (120c) from being largely deformed, while mitigating the concentration of stress, which is generated due to a car oscillation, to the joint portions between the mounting members (128, 129) and the longer side wall surface (120c). Therefore, the mechanical strength of the header tank (120) (especially, the longer side wall surface (120c)) can be improved without increasing mass (weight) and production cost of the radiator (100) caused by the excessive reinforcement, whereby the reliability and durability of the radiator (100) can be improved.

Abstract: A condenser core portion carries out a heat exchange between refrigerant and air. The condenser core portion includes a plurality of condenser tubes through which the refrigerant flows and condenser fins disposed between each pair of adjacent condenser tubes. A radiator core portion is disposed in series with the condenser core portion in an external fluid flow direction with a predetermined clearance therebetween, to carry out a heat exchange between engine coolant and the air. The radiator core portion includes a plurality of radiator tubes through which the engine coolant flows and radiator fins disposed between each pair of adjacent radiator tubes. A connecting portion integrates each of condenser fins and radiator fins. The condenser fins disposed at an upper area of the condenser core portion introduce cooling performances more than the condenser fins disposed at a lower area thereof.

Abstract: A plurality of first projections 113a are provided in a first side wall portion 111a of a grooved section 111 formed by bending part of a sheet-like workpiece to have a U-shaped cross-section, which projections extend away from a connecting portion (top) 111c. Since the first side wall portion 111a deforms to widen a groove width of the grooved section 111 due to spring-back, a tip end of the first projection 113a is first brought into contact with the inner wall 110a. Therefore, a reaction force against the compressive force is applied to the tip end of the first projection during the pre-assembly process. Since the tip end of the first projection 113a is not movable due to the contact with the inner wall 110a, a bending moment is applied to the first side wall portion 111a and the connecting portion 111c to reduce the groove width.

Abstract: A double heat exchanger has a condenser having a condenser tank and a condenser tank cap for closing an open end of the condenser tank, and a radiator having a radiator tank and a radiator tank cap for closing an open end of the radiator tank. The condenser tank cap has a protrusion which protrudes toward the radiator tank and contacts the radiator tank to form a gap between the condenser tank and the radiator tank. The protrusion is also used to clamp the condenser tank cap to the condenser tank. As a result, the gap is securely formed between the condenser tank and the radiator tank, while heat is transferred from the radiator tank to the condenser tank only through the protrusion. Therefore, heat transfer from the radiator tank to the condenser tank is sufficiently restricted without increasing a manufacturing cost.

Abstract: A double heat exchanger for a vehicle air conditioner combining a condenser and a radiator has a corrugated condenser fin and a corrugated radiator fin integrally formed and having the same fin pitch. Each of the condenser and radiator fins has plural upper folds, plural lower folds and plural wall portions each of which connects one of the upper folds and one of the lower folds next to each other. An inclination angle of each of the wall portions of the condenser fin is made different from that of each of the wall portions of the radiator fin. As a result, a height of the condenser fin becomes different from that of the radiator fin while maintaining a radius of curvature of each of the upper and lower folds of the condenser fin equal to that of each of the upper and lower folds of the radiator fin.

Abstract: The towel dispenser adapted to store and supply a towel of undeterminate length. At least one of the unused and used portions of the towel is stored in the form of a roll on a shaft. The towel dispenser includes a pair of side walls each having at least one elongated hole. The portion of the side wall defining the inner peripheral edge of the elongated hole is obliquely bent towards each respective other side wall so as to form a tab projecting towards the other side wall. Each end of the shaft is rotatably and slidably received in the respective elongated hole defined by the respective tab, in such a manner that each end of the shaft does not project beyond the plane of the associated side wall.