JP2012092674A - Intercooler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercooler that allows reduction of the volume of an air intake passage, while maintaining high heat exchanging performance.SOLUTION: A tube 11 composed by joining a sheet metal is joined to a core plate 12, and tank spaces 134, 135 are formed by the core plate 12 and a tank part. As the tube 11 composed by joining the sheet metal is used, high heat exchanging performance with a wide heat transfer area can be obtained. Further, by a configuration such that flanges 122, 133 provided on an outer edge part of the core plate 12 and the tank part are used to join the intercooler 1 to an intake manifold 5, the tank part can be arranged outside the intake manifold 5, and the volume in an intake pipe is reduced.

Description

  The present invention relates to an intercooler that cools intake air pressurized by a supercharger.

  Conventionally, a drone cup type intercooler having a large heat transfer area and high heat exchange performance has been widely used.

  In this intercooler, a large number of flat tubes formed by joining thin metal plates are stacked, outer fins are disposed between adjacent tubes, and reinforcing side plates are disposed at both ends in the stacking direction. A U-shaped cooling fluid passage through which cooling water flows is formed in the tube, and a tank component is formed on one end side of the tube.

  The cooling fluid passage is composed of a turn portion formed on the other end side of the tube and a straight passage portion linearly extending from the turn portion to one end side of the tube, and an inner fin is disposed in the straight passage portion. . In addition, the tank constituent parts of all the tubes are connected to form one tank part that collects and distributes cooling water to and from the cooling fluid passage (see, for example, Patent Document 1).

  An opening is formed in the intake pipe of the internal combustion engine, and an intercooler is inserted into the intake pipe from the opening. And the flange part formed in the side plate is contact | abutted to the circumference | surroundings of the opening part of intake piping, and the flange part and intake piping are couple | bonded.

  Further, in order to prevent intake air from bypassing the heat exchange part of the intercooler in the intake pipe and to suppress vibration of the heat exchange part, a packing is arranged around the heat exchange part (for example, patents) Reference 2).

JP-A-6-213532 JP 2010-127143 A

  However, in the configuration in which the intercooler is coupled to the intake pipe using the flange portion of the side plate, a tank portion that does not contribute much to heat exchange is also arranged in the intake passage in the intake pipe. Further, since the tank portion is disposed in the intake passage, the volume of the intake passage is increased, and there is a problem that the response of the internal combustion engine when the accelerator pedal is depressed is lowered.

  In addition, by arranging the tank part in the intake passage, the intake air volume (wind speed) of the heat exchange part where the air intake avoiding the tank part gathers is larger than the other parts, and the air intake avoiding the tank part is avoided. Since the portion where the heat gathers is not sufficiently cooled, there is a problem that the variation in the air temperature at each outlet position of the heat exchange portion becomes large. This is particularly problematic when the intercooler is mounted on the intake manifold downstream of the throttle valve and the intercooler and the internal combustion engine main body are close to each other.

  Furthermore, since the tank part is disposed in the intake passage, there is a problem that the installation position of the cooling water pipe connected to the tank part is limited to the side of the tank part on the flange.

  Furthermore, when the side plate is a flange portion that requires a large thickness, the flange portion that is in contact with the high-temperature supercharged air and is not sufficiently cooled by the cooling water thermally expands and is installed in parallel with the flange portion. There is also the problem of causing large thermal strain in the tube.

  Moreover, since the turn part in which the inner fin is not arranged has lower heat transfer performance than the straight passage part in which the inner fin is arranged, the temperature of the air that has passed through the turn part side is the air that has passed through the straight passage part. It may be about 4 ° C. higher than the temperature of. And the allowable value of the air temperature difference at the intercooler outlet is generally about 3 ° C., which may exceed the allowable value.

  Furthermore, in the case where the packing is arranged around the heat exchanging portion, there is a possibility that the sliding resistance when the intercooler is inserted into the intake pipe from the opening is increased.

  In view of the above points, an object of the present invention is to reduce the volume of an intake passage while maintaining high heat exchange performance.

  In order to achieve the above object, according to the first aspect of the present invention, the intake passage (4A) is inserted through the opening (51) formed in the intake pipe (4, 5), and in the intake pipe (4, 5). ) And is an intercooler that cools the intake air by exchanging heat between the intake air pressurized by the supercharger and the cooling fluid, and is configured by joining the metal thin plates (11a, 11b). A U-shaped cooling fluid passageway (111) through which the gas flows is formed inside, and a plurality of stacked tubes are provided having a cooling fluid inlet (112) and outlet (113) on one end in the longitudinal direction. (11), a core plate (12) in which one end in the longitudinal direction of the tube (11) is inserted into a plurality of formed tube insertion holes (121) and the tube (11) is joined, and the tube in the core plate (12) The length of (11) A tank portion (13) which is disposed on the side where the one end side protrudes and forms a tank space (134, 135) which communicates with the inflow port (112) and the outflow port (113) in cooperation with the core plate (12). The flange portion (122, 133) is formed on at least one of the outer edge portion of the core plate (12) and the outer edge portion of the tank portion (13), and the cooling fluid passage (111) is formed in the tube (11). And the tank portion (13) is disposed outside the intake passage (4A), the flange portions (122, 133) are in contact with the periphery of the opening portion (51), and the intake pipe is arranged. (4, 5) and a flange part (122, 133) are couple | bonded, It is characterized by the above-mentioned.

  According to this, since the tube (11) configured by joining the metal thin plates (11a, 11b) is used, the heat transfer area is wide and high heat exchange performance is obtained. Moreover, by the structure couple | bonded with an intake piping (4, 5) using the flange part (122,133) provided in at least one among the outer edge part of a tank part (13) and the outer edge part of a core plate (12), It becomes possible to arrange | position a tank part (13) out of an intake passage (4A). Therefore, the volume of the intake passage (4A) can be reduced while maintaining high heat exchange performance.

  Further, since the tank part (13) is arranged outside the intake passage (4A), the intake air amount (wind speed) of each part of the heat exchange part becomes substantially uniform, and variation in air temperature at each outlet position of the heat exchange part is achieved. Can be small.

  Furthermore, the installation position of the cooling water pipe connected to the tank portion can be freely selected as long as it is on the tank portion (13) disposed outside the intake passage (4A).

  Furthermore, since the flange portions (122, 133) are provided on at least one of the outer edge portion of the tank portion (13) and the outer edge portion of the core plate (12), the flange portions (122, 133) are sufficiently filled with cooling water. It is difficult to thermally expand and the flange portions (122, 133) and the tube (11) are not installed in parallel, so that the problem of thermal distortion of the tube (11) is also solved.

  According to a second aspect of the present invention, in the intercooler according to the first aspect, the flange portions (122, 133) are formed on the outer edge portion of the core plate (12) and the outer edge portion of the tank portion (13). The flange part (122) of the core plate (12) is sandwiched between the flange part (133) of (13) and the intake pipe (4, 5), and the flange part (122) of the core plate (12) and the intake pipe (4, 5) is provided with a first seal member (17) for preventing external leakage of intake air from the opening (51), and the flange (122) of the core plate (12) and the tank A second seal member (18) for preventing external leakage of the cooling fluid from the tank space (134, 135) is provided between the flange portion (133) of (13).

  According to this, the flange portion (122) of the core plate (12) and the flange portion (133) of the tank portion (13) are connected to the intake pipes (4, 5) and the components for coupling the cooling fluid and the intake air. It can be used as a constituent member for sealing.

  In the invention according to claim 3, in the intercooler according to claim 2, the first seal member (17) is provided between the flange portion (122) of the core plate (12) and the intake pipe (4, 5). In the state where the second seal member (18) is arranged between the flange portion (122) of the core plate (12) and the flange portion (133) of the tank portion (13), the core plate (12) The flange portion (122) and the flange portion (133) of the tank portion (13) are fastened together with bolts (6) to the intake pipes (4, 5).

  According to this, the flange portion (122) of the core plate (12), the flange portion (133) of the tank portion (13) and the intake pipes (4, 5), the first seal member (17) and the second Since the fixing of the seal member (18) can be completed at the same time, the number of assembling steps can be reduced.

  In the invention according to claim 4, in the intercooler according to claim 2, the first seal member (17) is provided between the flange portion (122) of the core plate (12) and the intake pipe (4, 5). In the state where the second seal member (18) is arranged between the flange portion (122) of the core plate (12) and the flange portion (133) of the tank portion (13), the core plate (12) The flange portion (122), the flange portion (133) of the tank portion (13), and the intake pipe (4, 5) are joined by fusion welding or pressure welding.

  According to this, the flange portion (122) of the core plate (12), the flange portion (133) of the tank portion (13) and the intake pipes (4, 5), the first seal member (17) and the second Since the fixing of the seal member (18) can be completed at the same time, the number of assembling steps can be reduced.

  In the invention according to claim 5, in the intercooler according to claim 1, the flange portion (133) is formed only at the outer edge portion of the tank portion (13), and the flange portion (133) of the tank portion (13) A first seal member (17) for preventing external leakage of the intake air from the opening (51) is provided between the intake pipe (4, 5), and the tank portion (13) and the core plate (12) The second seal member (18) for preventing the outside leakage of the cooling fluid from the tank space (134, 135) is provided.

  According to this, the flange part (133) of the tank part (13) can be used as a constituent member for coupling with the intake pipes (4, 5) and a constituent member for sealing the intake air.

  In the invention according to claim 6, in the intercooler according to claim 5, the first seal member (17) is provided between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5). The flange portion (133) of the tank portion (13) is connected to the intake pipes (4, 5) with bolts (6) in the arranged state.

  According to this, since the coupling of the flange portion (133) of the tank portion (13) and the intake pipe (4, 5) and the fixing of the first seal member (17) can be completed at the same time, the number of assembling steps can be reduced. Can be reduced.

  In the invention according to claim 7, in the intercooler according to claim 5, the first seal member (17) is provided between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5). The flange portion (133) of the tank portion (13) and the intake pipe (4, 5) are joined to each other by fusion welding or pressure welding in the arranged state.

  According to this, since the coupling of the flange portion (133) of the tank portion (13) and the intake pipe (4, 5) and the fixing of the first seal member (17) can be completed at the same time, the number of assembling steps can be reduced. Can be reduced.

  The invention according to claim 8 is characterized in that in the intercooler according to any one of claims 1 to 7, the tank portion (13) is made of resin. According to this, a tank part (13) can be reduced in weight.

In the invention according to claim 9, in the intercooler according to claim 1, the core plate (12) and the tank portion (13) are made of metal, and the core plate (12) and the tank portion (13) are welded together. It is characterized by joining by brazing. According to this, the second seal member (18) can be eliminated.
According to a tenth aspect of the present invention, in the intercooler according to any one of the first to ninth aspects, an outer fin that promotes heat exchange between the intake air and the cooling fluid between the adjacent tubes (11). 14). According to this, the heat exchange performance can be further enhanced.

  According to an eleventh aspect of the invention, in the intercooler according to any one of the first to tenth aspects, an inner fin (15) that promotes heat exchange between the intake air and the cooling fluid in the cooling fluid passage (111). It is characterized by providing. According to this, the heat exchange performance can be further enhanced.

  In addition, the code | symbol in the bracket | parenthesis of each means described in this column and the claim shows the correspondence with the specific means as described in embodiment mentioned later.

It is a figure showing the whole internal combustion engine composition provided with the intercooler concerning a 1st embodiment of the present invention. (A) is a front view of the intercooler which concerns on 1st Embodiment, (b) is a right view of (a). It is sectional drawing which follows the AA line of Fig.2 (a). It is sectional drawing which shows the state with which the intercooler which concerns on 1st Embodiment was mounted | worn with the intake manifold. It is a figure which shows the 2nd seal member of FIG. It is a figure which shows the modification of 1st Embodiment. It is sectional drawing which shows the state with which the intercooler which concerns on 2nd Embodiment of this invention was mounted | worn with the intake manifold. It is sectional drawing of the principal part of the intercooler which concerns on 3rd Embodiment of this invention. It is a figure which shows the 1st modification of 3rd Embodiment. It is a figure which shows the subinner fin of FIG. It is a figure which shows the 2nd modification of 3rd Embodiment. (A) is sectional drawing of the process in the middle of attaching the intercooler which concerns on 4th Embodiment of this invention to an intake manifold, (b) is a cross section which shows the state by which the intercooler which concerns on 4th Embodiment was attached to the intake manifold. FIG. (A) is sectional drawing which follows the BB line of FIG.12 (b), (b) is sectional drawing which follows the CC line of (a). It is sectional drawing which shows the state with which the intercooler which concerns on 5th Embodiment of this invention was mounted | worn with the intake manifold. It is sectional drawing which shows the state with which the intercooler which concerns on 6th Embodiment of this invention was mounted | worn with the intake manifold.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings.

(First embodiment)
A first embodiment of the present invention will be described. FIG. 1 is a diagram showing an overall configuration of an internal combustion engine including an intercooler according to a first embodiment of the present invention, FIG. 2 (a) is a front view of the intercooler according to the first embodiment, and FIG. 2 (b) is a diagram. 2 (a) is a right side view, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2 (a), and FIG. 4 is a cross-sectional view showing a state in which the intercooler according to the first embodiment is mounted on the intake manifold. It is.

  As shown in FIG. 1, a multi-cylinder (four cylinders in this example) internal combustion engine has an internal combustion engine body 2, a supercharger 3 that pressurizes intake air, and introduced air (that is, intake air) is guided to the internal combustion engine body 2 side. An intake pipe 4, an intake manifold 5 that distributes intake air to each cylinder of the internal combustion engine main body 2, an intercooler 1 that cools intake air by exchanging heat between the intake air and a cooling fluid (for example, water), and the like are provided.

  An intake passage 4 </ b> A through which intake air is circulated is formed inside the intake pipe 4 and the intake manifold 5. An air cleaner 41 is disposed at the most upstream portion of the intake pipe 4, and a throttle valve 42 is disposed between the intake pipe 4 and the intake manifold 5.

  Incidentally, the intake manifold 5 includes one collecting pipe connected to the intake pipe 4 and branch pipes branched from the collecting pipe and connected to each intake port of the internal combustion engine body 2. 5 constitutes an intake pipe of the present invention.

  More specifically, the supercharger 3 is a turbocharger, and includes a turbine 31 driven by exhaust gas and a compressor 32 driven by the turbine 31 to pressurize intake air. The compressor 32 is disposed in the intake passage 4A in the intake pipe 4 (in other words, on the upstream side of the intake flow from the throttle valve 42).

  The intercooler 1 is disposed on the downstream side of the intake flow with respect to the compressor 32, and more specifically, is disposed on the downstream side of the intake flow with respect to the throttle valve 42. Specifically, as shown in FIG. 4, a rectangular manifold opening 51 is formed in the intake manifold 5, and the intercooler 1 is attached to the manifold opening 51.

  As shown in FIGS. 2 to 4, the intercooler 1 has a cooling fluid passage formed therein and a plurality of stacked tubes 11, and one end side of the tube 11 in the longitudinal direction (hereinafter referred to as the tube longitudinal direction) is inserted. The laminated core plate 12, the tank portion 13 that forms a tank space together with the core plate 12, the outer fins 14 disposed between the adjacent tubes 11, the inner fins 15 disposed in the tube 1, and the tubes 11. Side plates 16 for reinforcement disposed at both ends of the direction (hereinafter referred to as tube stacking direction), a first seal member 17 for preventing outside leakage of intake air, and a second seal member for preventing outside leakage of cooling fluid 18 etc.

  The tube 11 is formed by joining two metal thin plates 11a and 11b made of aluminum or the like press-molded into a predetermined shape by brazing or the like, and a U-shaped cooling fluid passage through which a cooling fluid flows. 111 is formed in the inside, and the inflow port 112 used as the inlet of a cooling fluid and the outflow port 113 used as the exit of a cooling fluid are provided in the longitudinal direction one end side.

  The cooling fluid passage 111 is formed on the other end side in the tube longitudinal direction to turn the cooling fluid flow direction by 180 °, and extends linearly along the tube longitudinal direction from the inlet 112 to the turn portion 1111. An inlet-side straight passage portion 1112 that circulates the cooling fluid toward the outlet, and an outlet-side straight passage portion 1113 that extends linearly along the tube longitudinal direction and circulates the cooling fluid from the turn portion 1111 toward the outlet 113. .

  Inner fins 15 that increase the heat transfer area and promote heat exchange between the intake air and the cooling fluid are disposed in the inlet-side straight passage portion 1112 and the outlet-side straight passage portion 1113. Further, the inner fin 15 is joined to the tube 11 by brazing or the like, and contributes to improvement of the pressure resistance of the tube 11. The inner fin 15 is a straight fin in which a thin metal plate such as aluminum is formed in a corrugated shape, and the bending top portion extends linearly along the tube longitudinal direction (left and right direction in FIG. 4).

  The intake air passes between the adjacent tubes 11, and the outer fins 14 that increase the heat transfer area and promote heat exchange between the intake air and the cooling fluid are disposed between the adjacent tubes 11. Yes. The outer fin 14 is joined to the tube 11 by brazing or the like. The outer fin 14 is formed by corrugating a thin metal plate such as aluminum, and the bending top is along the direction perpendicular to the tube longitudinal direction and the tube stacking direction (the direction perpendicular to the paper surface of FIG. 2A). Straight fins extending linearly.

  The core plate 12 is a flat metal plate made of aluminum or the like, and has many tube insertion holes 121 formed therein. Then, one end side in the tube longitudinal direction is inserted into the tube insertion hole 121, and the core plate 12 and the tube 11 are hermetically joined by brazing or the like at the portion of the tube insertion hole 121. Moreover, the core plate 12 surrounds all the tube insertion holes 121, and the core plate flange part 122 is formed in the outer edge part.

  A tank portion 13 made of a resin such as polypropylene (PP) is disposed on the side of the core plate 12 where one end in the longitudinal direction of the tube 11 protrudes. The tank part 13 is a U-shaped tank main body 131 that forms a tank space in cooperation with the core plate 12, and a plate-like tank wall that extends from the center of the tank main body 131 and divides the tank space into two. Part 132 and a tank flange part 133 formed on the outer edge part of the tank body part 131.

  Of the divided tank spaces, the inflow port 112 is opened and communicated with the first tank space 134, and the outflow port 113 is opened and communicated with the second tank space 135. Then, the cooling fluid cooled by an external heat exchanger (not shown) flows into the tube 11 from the first tank space 134 and flows through the tube 11 and then passes through the second tank space 135 to the outside. Return to the heat exchanger.

  The second seal member 18 is made of rubber, for example, and has a shape surrounding the manifold opening 51 as shown in FIGS. 4 and 5, and an outer peripheral seal portion 181 sandwiched between the core plate flange portion 122 and the tank flange portion 133. And an inner seal portion 182 that is positioned inside the outer peripheral seal portion 181 and extends along the tube stacking direction and is sandwiched between the tip of the tank wall portion 132 and the core plate 12.

  The first seal member 17 is made of, for example, rubber and has a shape surrounding the manifold opening 51. In other words, the first seal member 17 is equal to the shape of the second seal member 18 from which the internal seal portion 182 is removed. The first seal member 17 is sandwiched between the core plate flange portion 122 and the intake manifold 5.

  The intercooler 1 of this embodiment is mounted on the intake manifold 5 as follows. First, the tube 11, the core plate 12, the outer fin 14, the inner fin 15, and the side plate 16 are integrated in advance by brazing or the like to form a heat exchange portion.

  Then, after the first seal member 17 is arranged around the manifold opening 51 and the end of the heat exchange part is inserted into the manifold opening 51, the core plate flange part 122 contacts the surface around the manifold opening 51. The heat exchange part is pushed in until it comes into contact, and the portion of the tube 11 where the cooling fluid passage 111 is formed is arranged in the intake passage 4A. As a result, the first seal member 17 is sandwiched between the core plate flange portion 122 and the intake manifold 5.

  Subsequently, after the second seal member 18 is disposed at a predetermined position of the core plate flange portion 122, the tank portion 13 is disposed on the side of the core plate 12 on which one end side in the longitudinal direction of the tube 11 protrudes. As a result, the core plate flange portion 122 is sandwiched between the tank flange portion 133 and the intake pipe 2, and the outer peripheral seal portion 181 of the second seal member 18 is sandwiched between the core plate flange portion 122 and the tank flange portion 133. In addition, the inner seal portion 182 of the second seal member 18 is sandwiched between the tip of the wall portion 132 of the tank portion 13 and the core plate 12. In this state, the core plate flange portion 122 and the tank flange portion 133 are coupled to the intake manifold 5 by fastening them together with bolts 6. Thereby, the mounting of the intercooler 1 to the intake manifold 5 is completed.

  When the intercooler 1 is completely mounted, the portion of the tube 11 where the cooling fluid passage 111 is formed is located in the intake passage 4A, and the tank portion 13 is located outside the intake passage 4A (more specifically, in the intake manifold 5). Located outside).

  As described above, in this embodiment, since the tube 11 formed by joining thin metal plates is used, the heat transfer area is wide and high heat exchange performance is obtained. In addition, the intercooler 1 is coupled to the intake manifold 5 using the core plate flange portion 122 and the tank flange portion 133, so that the tank portion 13 can be disposed outside the intake passage 4A. Therefore, the volume in the intake manifold 5 can be reduced while maintaining high heat exchange performance.

  Further, the core plate flange portion 122 and the tank flange portion 133 are used as a component for coupling to the intake manifold 5 and a component for sealing the cooling fluid and the intake air. Further, the core plate flange portion 122 and the tank flange portion are used. In order to jointly fasten 133 to the intake manifold 5, the coupling of the core plate flange portion 122, the tank flange portion 133 and the intake manifold 5 and the fixing of the first seal member 17 and the second seal member 18 are completed at the same time. It is possible to reduce assembly man-hours.

  Furthermore, since the tank unit 13 is disposed outside the intake passage 4A, the intake air amount (wind speed) of each part of the heat exchange unit is substantially uniform, and variation in air temperature at each outlet position of the heat exchange unit is reduced. Can do.

  The installation position of the cooling water pipe connected to the tank unit 13 can be freely selected as long as it is on the tank unit 13 disposed outside the intake passage 4A.

  Furthermore, the core plate flange portion 122 and the tank flange portion 133 are sufficiently cooled by the cooling water and hardly thermally expand, and the core plate flange portion 122 and the tank flange portion 133 and the tube 11 are not installed in parallel. The problem of thermal distortion of the tube 11 is also eliminated.

  In the present embodiment, the core plate flange portion 122, the tank flange portion 133, and the intake manifold 5 are coupled by the bolt 6. However, instead of the bolt 6, they may be coupled by an adhesive. In this case, the first sealing member 17 and the second sealing member 18 can be eliminated by giving the adhesive a sealing function.

  FIG. 6 shows a modified example of the first embodiment, which is a combination of snap fits instead of the bolts 6. That is, the intake manifold 5 is formed with a holding portion 52 having grooves into which the core plate flange portion 122 and the tank flange portion 133 are inserted, and a movable piece 53 that can be easily deformed. An engaging protrusion 54 is formed at the tip of the movable piece 53.

  Then, after inserting the core plate flange portion 122 and the tank flange portion 133 into the holding portion 52, the core plate flange portion 122 and the tank flange portion 133 are moved into the movable piece 53 by moving over the protrusion 54 while expanding the movable piece 53. insert. Thereby, the core plate flange part 122, the tank flange part 133, and the intake manifold 5 are combined.

  Further, the core plate flange portion 122, the tank flange portion 133, and the intake manifold 5 may be coupled by snap fit and adhesive.

  Furthermore, the intake manifold 5, the core plate 12, and the tank portion 13 may all be made of metal, and may be joined by pressure welding (for example, ultrasonic welding) or fusion welding (for example, laser welding). In this case, the first seal member 17 and the second seal member 18 can be eliminated.

(Second Embodiment)
A second embodiment of the present invention will be described. FIG. 7 is a cross-sectional view showing a state in which the intercooler according to the second embodiment is mounted on the intake manifold. Only the parts different from the first embodiment will be described below.

  As shown in FIG. 7, in the intercooler 1 of the present embodiment, the core plate flange portion 122 is eliminated. And the 2nd seal member 18 is arrange | positioned between the core plate 12 and the tank part 13, and the core plate 12 and the tank part 13 are integrated by crimping the outer peripheral part of the core plate 12. FIG. The first seal member 17 is disposed between the tank flange portion 133 and the intake manifold 5.

  The intercooler 1 of this embodiment is mounted on the intake manifold 5 as follows. First, the intercooler 1 is formed by integrating components other than the first seal member 17 by caulking, brazing, or the like to form an intercooler body.

  Then, after the first seal member 17 is arranged around the manifold opening 51 and the end of the intercooler main body is inserted into the manifold opening 51, the tank flange 133 contacts the surface around the manifold opening 51. The heat exchange part is pushed in until it comes into contact, and the portion of the tube 11 where the cooling fluid passage 111 is formed is arranged in the intake passage 4A. As a result, the first seal member 17 is sandwiched between the tank flange portion 133 and the intake manifold 5.

  In this state, the tank flange portion 133 is coupled to the intake manifold 5 with bolts 6. Thereby, the mounting of the intercooler 1 to the intake manifold 5 is completed.

  When the intercooler 1 is completely mounted, the portion of the tube 11 where the cooling fluid passage 111 is formed is located inside the intake manifold 5, and the tank portion 13 is located outside the intake manifold 5.

  According to the present embodiment, as in the first embodiment, the volume in the intake manifold 5 can be reduced while maintaining high heat exchange performance.

  Further, in order to use the tank flange portion 133 as a constituent member for coupling to the intake manifold 5 and a constituent member for sealing the intake manifold 5, the coupling of the tank flange portion 133 and the intake manifold 5 and the first seal member 17 Fixing can be completed simultaneously, and the number of assembly steps can be reduced.

  In the present embodiment, the tank flange portion 133 and the intake manifold 5 are coupled by the bolt 6, but they may be coupled by an adhesive instead of the bolt 6. Moreover, instead of the bolts 6, they may be coupled by snap fit, or they may be coupled by snap fit and adhesive. Furthermore, they may be joined by pressure welding (for example, ultrasonic welding) or fusion welding (for example, laser welding).

(Third embodiment)
A third embodiment of the present invention will be described. FIG. 8 is a cross-sectional view of a main part of the intercooler according to the third embodiment.

  This embodiment is intended to improve the heat transfer performance of the turn part where the inner fin is not disposed. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

  As shown in FIG. 8, the inner fin 15 is a straight fin whose bent top portion extends linearly along the tube longitudinal direction (left and right direction in FIG. 8), and the turn portion 1111 side is cut obliquely.

  More specifically, the direction (vertical direction in the drawing of FIG. 8) perpendicular to both the tube longitudinal direction and the tube stacking direction (the drawing vertical direction in FIG. 8) is defined as the inter-tube intake flow direction X, and the tube 11 longitudinal direction. When the end on the turn part 1111 side of the both ends is the tube bottom part, the turn part 1111 side in the inner fin 15 is closer to the both ends of the inter-tube intake flow direction X than the center part of the inter-tube intake flow direction X. It extends long toward the bottom.

  Thus, by cutting the turn part 1111 side of the inner fin 15 diagonally, the heat transfer area on the turn part 1111 side in the inner fin 15 is increased while preventing the flow of the cooling fluid in the turn part 1111. Yes.

  Then, heat exchange between the cooling fluid and the inner fin 15 on the turn portion 1111 side is promoted by an increase in the heat transfer area on the turn portion 1111 side in the inner fin 15. Therefore, the temperature difference between the intake air passing through the turn portion 1111 side and the intake air passing through the inlet side straight passage portion 1112 and the outlet side straight passage portion 1113 can be reduced.

  The inner fin 15 may be formed by integrating the inner fin on the inlet side straight passage portion 1112 side and the inner fin on the outlet side straight passage portion 1113 side.

  FIGS. 9 and 10 show a first modification of the third embodiment. Instead of increasing the heat transfer area by obliquely cutting the turn part 1111 side of the inner fin 15, the turn part 1111 has a sub-inner. The fins 19 are arranged. The sub-inner fins 19 are offset fins that are formed by alternately bending a thin metal plate such as aluminum in a concavo-convex shape, and the concave and convex portions are provided by being intermittently offset in the lateral direction.

  Further, FIG. 11 shows a second modification of the third embodiment. Instead of increasing the heat transfer area by obliquely cutting the turn part 1111 side of the inner fin 15, the turn part 1111 of the tube 11 is connected to the outside. You may form many protrusion parts 114 which became convex toward the side. In this case, the protrusion 114 promotes heat exchange between the intake air passing through the turn part 1111 and the turn part 1111.

(Fourth embodiment)
A fourth embodiment of the present invention will be described. FIG. 12A is a cross-sectional view of an intermediate process for mounting the intercooler according to the fourth embodiment on the intake manifold, and FIG. 12B shows a state where the intercooler according to the fourth embodiment is mounted on the intake manifold. It is sectional drawing. 13A is a cross-sectional view taken along the line BB in FIG. 12B, and FIG. 13B is a cross-sectional view taken along the line CC in FIG. 13A.

  In this embodiment, the sliding resistance when the intercooler is inserted into the intake manifold is reduced. In addition, since it is the same as that of 1st Embodiment regarding others, only a different part is demonstrated.

  As shown in FIGS. 12 and 13, the first packing 7 and the second packing 8 are arranged inside the intake manifold 5 (that is, the air circulation portion). Although the material of the 1st packing 7 and the 2nd packing 8 changes with usage environments, ethylene propylene rubber (EPDM), acrylic rubber, silicon rubber, fluororubber, or those foam materials are selected.

  The first packing 7 is formed in a U shape or a U shape in which two opposing end sides 71 are connected by a single intermediate side 72. The first packing 7 is arranged on the upstream side of the intake air flow from the intercooler 1, the end side 71 is opposed to the two side plates 16, and the intermediate side 72 is the end of the tube 11 on the tube bottom side and the outer side. It faces the end of the fin 14 on the tube bottom side.

  The second packing 8 is formed in an I-shape, and is disposed on the downstream side of the intake air flow from the intercooler 1, and faces the end of the tube 11 on the tube bottom side and the end of the outer fin 14 on the tube bottom side. is doing.

  In order to allow the intercooler 1 to be inclined and inserted into the intake manifold 5 (see FIG. 12A), the dimension of the inter-tube intake flow direction X in the manifold opening 51 is the inter-tube intake flow direction in the tube 11. It is larger than the dimension of X.

  The distance between the intermediate side 72 of the first packing 7 and the second packing 8 in the inter-tube intake flow direction X is substantially equal to the dimension of the inter-tube intake flow direction X in the tube 11. The end portion and the end portion of the outer fin 14 on the tube bottom side are in close contact with the intermediate side 72 of the first packing 7 and the second packing 8.

  When the intercooler 1 is mounted on the intake manifold 5, first, the end of the heat exchanging portion of the intercooler 1 is inserted into the manifold opening 51, and then the intercooler 1 is tilted and pushed (FIG. 12A). reference). In this way, by tilting the intercooler 1, when inserting the intercooler 1, only the end portion in the tube longitudinal direction of the side plate 16 comes into contact with the end side 71 of the first packing 7. Resistance becomes smaller.

  Then, the heat exchanger of the intercooler 1 is inserted to the back of the intake manifold 5, and the end of the tube 11 on the tube bottom side and the end of the outer fin 14 on the tube bottom side are connected to the intermediate side 72 of the first packing 7. In addition, the intercooler 1 is in close contact with the second packing 8 and the inclination of the intercooler 1 is changed so that the entire tube longitudinal direction of the side plate 16 is brought into contact with the end side 71 of the first packing 7. Fix to the manifold 5.

  According to this embodiment, the sliding resistance when the intercooler 1 is inserted into the intake manifold 5 can be reduced, and workability can be improved.

  Further, the first packing 7 can prevent intake air from bypassing the heat exchanging portion of the intercooler 1, and the first packing 7 and the second packing 8 can suppress vibration of the heat exchanging portion of the intercooler 1. it can.

(Fifth embodiment)
A fifth embodiment of the present invention will be described. FIG. 14 is a cross-sectional view showing a state in which the intercooler according to the fifth embodiment is mounted on the intake manifold. Only the parts different from the first embodiment will be described below.

  As shown in FIG. 14, in the intercooler 1 of the present embodiment, the tank portion 13 is made of metal such as aluminum, and the tank flange portion 133 is abolished. The first seal member 17 is disposed between the core plate flange portion 122 and the intake manifold 5, and the core plate flange portion 122 is coupled to the intake manifold 5 with bolts 6.

  Further, the core plate 12 and the tank portion 13 are joined by brazing (for example, brazing) or fusion welding (for example, arc welding). Thereby, the 2nd seal member 18 is made unnecessary.

(Sixth embodiment)
A sixth embodiment of the present invention will be described. FIG. 15 is a cross-sectional view showing a state where the intercooler according to the sixth embodiment is mounted on the intake manifold. Only the parts different from the first embodiment will be described below.

  As shown in FIG. 15, the intercooler 1 of this embodiment abolishes the core plate flange portion 122 and arranges the core plate 12 in the manifold opening 51. Further, the tank portion 13 is made of metal such as aluminum, and a part of the tank main body portion 131 and the tank wall portion 132 are disposed in the manifold opening 51.

  The first seal member 17 is disposed between the tank flange portion 133 and the intake manifold 5, and the tank flange portion 133 is coupled to the intake manifold 5 with bolts 6. Further, the core plate 12 and the tank portion 13 are joined by brazing (for example, brazing) or fusion welding (for example, arc welding). Thereby, the 2nd seal member 18 is made unnecessary.

(Other embodiments)
In the first to fourth embodiments, the intake manifold 5 and the tank portion 13 are made of resin, but either one or both may be made of metal such as aluminum.
Moreover, in each said embodiment, although the turbocharger was used as the supercharger 3, superchargers other than a turbocharger can also be used.
Further, in each of the above-described embodiments, the intercooler 1 is disposed on the downstream side of the intake air flow (in other words, the intake manifold 5) from the throttle valve 42. However, the intercooler 1 is disposed between the compressor 32 and the throttle valve 42. May be.

  Furthermore, the above embodiments can be arbitrarily combined within a feasible range.

4 Intake pipe (intake pipe)
5 Intake manifold (intake piping)
DESCRIPTION OF SYMBOLS 11 Tube 12 Core plate 13 Tank part 51 Opening part 4A Intake passage 111 Cooling fluid passage 112 Inlet 113 Outlet 11a Metal thin plate 11b Metal thin plate 121 Tube insertion hole 122 Flange part 133 Flange part 134 Tank space 135 Tank space

Claims (11)

The intake air that is inserted from the opening (51) formed in the intake pipe (4, 5), is disposed in the intake passage (4A) in the intake pipe (4, 5), and is pressurized by the supercharger. And an intercooler that cools the intake air by exchanging heat with the cooling fluid,
The metal thin plates (11a, 11b) are joined to form a U-shaped cooling fluid passage (111) through which the cooling fluid flows, and the cooling fluid inlet (112) and outlet (113). A plurality of tubes (11) arranged on one end side in the longitudinal direction,
A core plate (12) in which one end side in the longitudinal direction of the tube (11) is inserted into a plurality of formed tube insertion holes (121) and the tube (11) is joined;
The one end side in the longitudinal direction of the tube (11) in the core plate (12) is disposed on the protruding side, and communicates with the inlet (112) and the outlet (113) in cooperation with the core plate (12). A tank portion (13) forming a tank space (134, 135),
Flange portions (122, 133) are formed on at least one of the outer edge portion of the core plate (12) and the outer edge portion of the tank portion (13),
A portion of the tube (11) where the cooling fluid passage (111) is formed is disposed in the intake passage (4A), and the tank portion (13) is disposed outside the intake passage (4A).
The flanges (122, 133) abut on the periphery of the opening (51), and the intake pipes (4, 5) and the flanges (122, 133) are coupled to each other. Cooler. The flange portions (122, 133) are formed on an outer edge portion of the core plate (12) and an outer edge portion of the tank portion (13),
The flange portion (122) of the core plate (12) is sandwiched between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5),
A first seal member (17) for preventing external leakage of intake air from the opening (51) between the flange portion (122) of the core plate (12) and the intake pipe (4, 5). With
Between the flange portion (122) of the core plate (12) and the flange portion (133) of the tank portion (13), external leakage of the cooling fluid from the tank space (134, 135) is prevented. The intercooler according to claim 1, further comprising a second seal member (18).   The first seal member (17) is disposed between the flange portion (122) of the core plate (12) and the intake pipe (4, 5), and the flange portion (122) of the core plate (12). And the flange portion (133) of the core plate (12) and the tank portion (13) with the second seal member (18) disposed between the flange portion (133) of the tank portion (13). The intercooler according to claim 2, wherein the flange portion (133) is fastened with bolts (6) to the intake pipe (4, 5).   The first seal member (17) is disposed between the flange portion (122) of the core plate (12) and the intake pipe (4, 5), and the flange portion (122) of the core plate (12). In the state where the second seal member (18) is disposed between the flange portion (133) of the tank portion (13) and the flange portion (122) of the core plate (12), the tank portion (13) The intercooler according to claim 2, wherein the flange portion (133) and the intake pipe (4, 5) are joined by fusion welding or pressure welding. The flange part (133) is formed only on the outer edge part of the tank part (13),
A first seal member (17) for preventing external leakage of the intake air from the opening (51) between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5). With
A second seal member (18) for preventing external leakage of cooling fluid from the tank space (134, 135) is provided between the tank portion (13) and the core plate (12). The intercooler according to claim 1.   In a state where the first seal member (17) is disposed between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5), the flange portion (133) of the tank portion (13). 6) The intercooler according to claim 5, characterized in that it is connected to the intake pipe (4, 5) with a bolt (6).   In a state where the first seal member (17) is disposed between the flange portion (133) of the tank portion (13) and the intake pipe (4, 5), the flange portion (133) of the tank portion (13). The intercooler according to claim 5, wherein the intake pipe (4, 5) is joined by fusion welding or pressure welding.   The intercooler according to any one of claims 1 to 7, wherein the tank portion (13) is made of resin.   The core plate (12) and the tank part (13) are made of metal, and the core plate (12) and the tank part (13) are joined by fusion welding or brazing. The described intercooler.   The intercooler according to any one of claims 1 to 9, further comprising an outer fin (14) for promoting heat exchange between the intake air and the cooling fluid between the adjacent tubes (11).   The intercooler according to any one of claims 1 to 10, wherein the cooling fluid passage (111) includes an inner fin (15) that promotes heat exchange between the intake air and the cooling fluid.

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