Abstract: A battery pack has multiple wall-shaped projecting portions, which are provided on side surfaces of battery cells perpendicular to a layer direction X, extend in a flow direction of cooling fluid and arranged in a direction perpendicular to the flow direction of the cooling fluid, to form fluid passages between neighboring battery cells. It further has multiple enlarged projecting portions, which are provided at intermediate portions of the wall-shaped projecting portions extending in the flow direction of the cooling fluid and brought into contact with the neighboring battery cells to receive action force therefrom. An outer dimension of the enlarged projecting portions in the direction, in which the multiple wall-shaped projecting portions are arranged, is made larger than a thickness dimension of the wall-shaped projecting portions.

Abstract: A battery pack has multiple wall-shaped projecting portions, which are provided on side surfaces of battery cells perpendicular to a layer direction X, extend in a flow direction of cooling fluid and arranged in a direction perpendicular to the flow direction of the cooling fluid, to form fluid passages between neighboring battery cells. It further has multiple enlarged projecting portions, which are provided at intermediate portions of the wall-shaped projecting portions extending in the flow direction of the cooling fluid and brought into contact with the neighboring battery cells to receive action force therefrom. An outer dimension of the enlarged projecting portions in the direction, in which the multiple wall-shaped projecting portions are arranged, is made larger than a thickness dimension of the wall-shaped projecting portions.

Abstract: In a heat exchanger with a plurality of tubes, a header tank includes a core plate bonded to the tubes, a tank body fixed to the core plate, and an elastic member arranged between a bottom portion of a groove portion provided at an outer peripheral portion of the core plate and a tip end portion of the tank body to be elastically deformable therebetween. The elastic member is provided with a position determination portion which protrudes approximately in parallel with an inner bottom surface of the bottom portion of the groove portion. Furthermore, the position determination portion is configured in the elastic member to have a clearance between the position determination portion and the bottom surface of the bottom portion of the groove portion, and a clearance between the position determination portion and the tip end portion of the tank body.

Abstract: The inventive entrance/exit piping structure 20 for an intercooler 10 is formed of a plurality of pipes 21 to 24, the pipe end portions 20a, 20b are bundled together to have a circular contour and, in a middle portion 20c, the respective pipes are arranged adjacent to each other and are bent together.

Abstract: In a heat exchanger, a tube is adapted to exchange heat between a first fluid flowing therein and a second fluid flowing through outside of the tube, and an inner fin is disposed in the tube to divide a flow passage in the tube into a plurality of flow paths. The inner fin includes a plurality of fin portions with different specifications, and the fin portions are arranged in series with respect to a flow direction of the first fluid. Furthermore, the fin portion with the smallest flowing resistance of the first fluid among the plurality of fin portions is arranged on an upstream side of the flow direction of the first fluid with respect to at least an another fin portion. Accordingly, heat exchange performance in the entire heat exchanger can be effectively improved.

Abstract: A brazing method is provided for brazing a metallic material for brazing to another metallic material. The metallic material for brazing includes a base material portion made of copper or a copper alloy containing chrome by a predetermined amount, and a metallic film portion made of a material having a melting point lower than a heating temperature in brazing, and provided on the surface of the base material portion. The brazing method includes a step of assembling the metallic material for brazing and the another metallic material to form an assembly, a step of heating and brazing the assembly, in which the metallic film portion is melted to diffuse chrome into a surface of the metallic material for brazing, and a step of forming a chrome oxide film by using the chrome diffused into the surface of the metallic material for brazing in atmosphere after the brazing step.

Abstract: In a brazing method, tubes for a heat exchanger, in which an inner fluid flows and exchanges heat with an outer fluid, are bonded to fins for expanding a heat exchange area at a time of exchanging the heat, by using a brazing material of paste form. The method includes a mounting step of stacking the tubes and the fins alternately in layers to form an assembly, a coating step of coating portions near outside abutting portions where the tubes abut on the fins with the brazing material after the mounting step, and a brazing step of carrying the assembly coated with the brazing material in the coating step into a brazing furnace and of brazing the tubes to the fins.

Abstract: A heat exchanger comprising: a plurality of tubes inside of which a fluid passes; fins which are joined to the outer surfaces of the tubes and promote heat exchange between a fluid passing around the tubes and the fluid passing through inside the tube; and tank sections comprising core plates having insertion holes formed for the tubes to be inserted therein and tank bodies having the core plates joined thereto for distributing or collecting the fluid to be passed through the tubes; the tube comprises a first and a second tube plates joined in opposition to each other and inner fins disposed between the first and second tube plates, and that the portion of the tube to be inserted into the insertion hole of the core plate has generally the same outer shape as the periphery of the insertion hole, and that the portions of the first and second tube plates not to be inserted into the insertion hole of the core plate have overlapping sections which overlap each other in laminating direction of the tubes.

Abstract: A heat exchanger has a core including tubes and a core plate coupled to the core. The core plate has a coupling wall on which tube insertion holes are formed for receiving ends of the tubes. The coupling wall has an end portion and a clearance portion both coupled to the tubes. The clearance portion is integrally connected to the end portion and spaced from an imaginary plane, on which the end portion is located. A paste brazing material is applied to a joining portion between the core plate and each tube by a brazing material applying device through a space provided between the clearance portion and the imaginary plane.

Abstract: A method of brazing different types of metals by a low melting point brazing material is provided. First, a surface of a first metal member is covered by a material enabling brazing with a second metal member along with diffusion of a brazing material. Next, a low melting point brazing material is arranged at the covered surface. Further, the low melting point brazing material is made to melt.

Abstract: A heat exchanger (20) includes a plurality of tubes (23) with a fluid flowing therein and header tanks (21) arranged at the longitudinal ends of the tubes (23) and comunicating with the plurality of the tubes (23). The header tanks (21) each include a core plate (27) coupled with the tubes (23) and a tank body (31) coupled to straight portions (29) holding the joints of the core plate (27) with the tubes (23) and forming an internal space of the tank together with the core plate (27). The cross section of the each header tank (21) configured of the core plate (27) and the tank body (31) is in the shape of an ellipse or a polygon similar to an ellipse, and the aspect ratio of the ellipse inscribed in the cross section of the header tank (21) is between 0.95 and 1.05 inclusive. Thus, the header tanks of the heat exchanger have a strength capable of sufficiently resisting an increased supercharge pressure.

Abstract: An outlet/inlet piping structure of an intercooler according to the invention has a construction in which an outlet/inlet piping 5 is branched in such a fashion as to possess a plurality of flow passages from one of the flow passages of a distal end position 5a spaced apart from a header tank 4 of an intercooler to a connection portion 5b to the header tank so that a fluid pressure loss does not substantially occur in the flow between the distal end position and the connection portion. In other words, a ratio of a sectional area of the flow passage of the connection portion to a sectional area of the connection portion of the far end portion is at least 78%.

Abstract: An intercooler of an internal combustion engine comprises tubes 10 having an internal path of the intake air and inner fins 11 arranged in the tubes 10 in such a manner as to divide the flow path in each tube 10 into a plurality of thin flow paths 100 to promote the heat exchange between the intake air and the cooling fluid, wherein the inner fins 11 are straight fins with the walls 110 extending linearly in the direction of the intake air flow to divide the flow path into the thin flow paths 100 and the supercharged air flow rate is not less than 1200 kg/hr. The tubes 10 are formed of copper or a copper alloy having a plate thickness of 0.1 to 0.5 mm. Assuming that the interval between adjacent tubes 10 in the stacking direction is a tube pitch Tp and the height of the tubes 10 in the stacking direction is a tube height Th, the relation between the tube pitch Tp and the tube height Th is defined.

Abstract: The inventive entrance/exit piping structure 20 for an intercooler 10 is formed of a plurality of pipes 21 to 24, the pipe end portions 20a, 20b are bundled together to have a circular contour and, in a middle portion 20c, the respective pipes are arranged adjacent to each other and are bent together.

Abstract: A method of fabricating a foil brazing member is disclosed and comprises the steps of ejecting molten metal of a brazing metal alloy onto a rotating metal cooling roll from at least an opening of a nozzle, cooling and solidifying the molten metal by the cooling roll and forcibly separating the cooled and solidified molten metal from the cooling roll into a thin band-shaped foil brazing member. The method further comprises the step of forming a plurality of empty portions on the molten metal being cooled and solidified, between the ejection step and the forcible separation step.

Abstract: In a brazed structure, a first member has a first portion defined by one of a recessed portion and a hole, and a second member has a second portion brazed to the first portion with a copper brazing material. The first member has a coefficient of thermal expansion that is smaller than that of the second member.

Abstract: In a mechanically assembled type heat exchanger, in which an end portion of an oval tube is inserted into a barring hole of a core plate and expanded to be press fit to the core plate. Then adhesive is potted on the core plate for sealing the press fit portion in the end of the tube. A reinforcing member is formed around the barring hole for increasing the rigidity of the core plate so as to improve the durability of sealing.

Abstract: Clearance holding portions for holding a clearance between the adjacent plate fins are spaced from side edges of louvers by a predetermined distance in a direction perpendicular to a flowing direction of air and disposed at an upstream side of tubes in the flowing direction of the air. In this way, air flowing between the adjacent plate fins flows through the louvers without being disturbed by the clearance holding portions, so that an effect of the louvers for improving the heat exchange performance can be maintained sufficiently.

Abstract: A cooling apparatus for use in a vehicle is provided in which the cooling water of the water-cooled internal combustion engine is guided into a first portion of the radiator and the cooling water of another water-cooled apparatus such as a water-cooled innercooler of a super charger is guided into a second portion of the radiator. The first radiator portion and the second radiator portion can be selectively fluidly connected so that cooling water from one radiator portion can assist cooling in the other radiator portion.

Abstract: The condenser is mounted in front of radiator by means of a mounting shroud, which includes a tubular portion for covering over an outer periphery of the condenser, a pair of vertical mounting walls provided on an inner periphery of the tubular portion, and a pair of mounting leg portions formed on an outer periphery of the tubular portion. The vertical mounting walls are securely fastened to upper and lower brackets of the condenser in a condition wherein the former contact with the latter, and the lower mounting leg portions are fitted in engaging recesses of a lower tank of the radiator while the upper mounting leg portions are securely fastened to an upper tank of the radiator. The tubular portion of the mounting shroud serves also as a wind introducing duct which prevents heated air having passed the radiator from coming around to the front of the condenser again.