JP2015155785A - radiator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an integral heat exchanger capable of improving mountability by making thickness in an air blow direction smaller, and ensuring the cooling of cooler cooling water which is lower in temperature zone than internal combustion engine cooling water to a target temperature zone.

SOLUTION: One upper tank 23 and one lower tank 24 fixedly caulked to both sides of an integral core section 20 are provided, respectively, partitions 25a and 25b are provided in the upper tank 23 and the lower tank 24, respectively to divide interiors of the upper tank 23 and the lower tank 24 into a cooler cooling water segment 23A and 24A and an internal combustion engine cooling water segment 23B and 24B, respectively, and furthermore, meander partitions 26a and 26b are provided in the cooler cooling water segments 23A and 24A, respectively so that a channel of cooler cooling water Wc meanders via a first core section 21 while reciprocating an interval between the cooler cooling water segments 23A and 24A a plurality of times.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to a radiator, and more particularly, cooling water for a cooler used for an intake air cooler for cooling intake air supplied to a cylinder of the internal combustion engine, and cooling for the internal combustion engine used for cooling the internal combustion engine. The present invention relates to a radiator capable of cooling water.

  Engines with turbochargers such as turbochargers and superchargers are equipped with air-cooled or water-cooled intercoolers in order to increase engine charging efficiency and improve fuel efficiency, and cool the intake air compressed by the turbocharger. Yes.

  The air-cooled intercooler has a structure in which the intercooler itself is disposed, and the water-cooled intercooler has a structure in which a radiator for cooling the cooling water is disposed on the upstream side of the radiator for the engine. However, the radiator of the water-cooled intercooler can be mounted more easily because the core portion (heat exchange portion) can be made thinner than the air-cooled intercooler due to the difference in heat capacity between water and air.

  However, in an engine room with a limited space, it is necessary to secure a space for a large number of parts, and further improvement of the mountability of each part is required.

  Therefore, an integrated heat exchanger in which a plurality of types of heat exchangers arranged close to each other, such as a radiator, a cooling condenser, a radiator, and an intercooler, are connected and integrated in advance has been proposed. In this integrated heat exchanger, the first heat exchanger and the second heat exchanger, which have different operating temperatures, are configured integrally by sharing fins, and both heats are formed in the intermediate portion in the width direction of the fins. There is one formed by forming a cutout portion that blocks heat conduction between the exchangers (see, for example, Patent Document 1).

  In addition, in an integrated heat exchanger, there is a configuration in which a predetermined gap is provided between the first heat exchanger and the second heat exchanger, and a side plate that couples the heat exchangers is provided (for example, , See Patent Document 2).

  These devices cool the refrigerants in different temperature zones and improve the mountability by blocking the heat conduction between the first heat exchanger and the second heat exchanger.

  However, these apparatuses are provided with separate upper tanks and lower tanks for the first heat exchanger and the second heat exchanger, respectively. This is because the working pressures in the first exchanger (radiator) and the second exchanger (capacitor) are different.

  Usually, the upper tank and the lower tank are joined to the heat exchanger by caulking a caulking portion provided for each of them. Therefore, by arranging two upper tanks or lower tanks, it is necessary to have two tank widths, and it is necessary to consider the thickness of the caulking part that caulks the tanks. The thickness as a vessel was thick.

  On the other hand, if these devices are used for the radiator that cools the cooling water of the water-cooled intercooler and the radiator of the engine, the cooling water of the water-cooled intercooler becomes insufficiently cooled and the intake air can be supercharged. There is also a problem that it cannot be done.

JP-A-3-17795 JP-A-9-210591

  The present invention has been made in view of the above-mentioned problems, and the problem is that the thickness in the blowing direction can be made thinner to improve the mountability, and the temperature range is lower than that of the cooling water for internal combustion engines. An object of the present invention is to provide an integrated heat exchanger capable of reliably cooling the cooling water for the cooler to a target temperature range.

  In order to solve the above problems, an integrated heat exchanger according to the present invention includes a first heat exchanging unit and a second heat exchanging unit that exchange heat of cooling water in different temperature zones with the same operating pressure range. In the integrated heat exchanger provided with an integrated heat exchange unit arranged in order from the upper side, an inflow container and an outflow container fixed by caulking on both sides of the integrated heat exchange unit are provided one by one A partition wall is provided in each of the inflow container and the outflow container, and the inside of each of the inflow container and the outflow container is heat-exchanged by the first heat exchange section by the partition partition. Partitioning into a low-temperature cooling water section for storing cooling water and a high-temperature cooling water section for storing high-temperature cooling water heat-exchanged in the second heat exchange section; and further, the low-temperature cooling water section of the inflow vessel Of the low temperature cooling water compartment of the effluent container. A meandering partition is provided for each, and the flow path of the low-temperature cooling water is divided between the low-temperature cooling water section of the inflow container and the outflow container by the meandering partition via the first heat exchange section. It is configured to meander by reciprocating between the low-temperature cooling water section.

  According to this configuration, by providing the partition partition, one inflow container partitioned into the low-temperature cooling water partition and the high-temperature cooling water partition inside, and similarly partitioned into the low-temperature cooling water partition and the high-temperature cooling water partition. Conventionally, one outflow container is fixed by caulking on both sides of the integrated heat exchange section, so that each heat exchange section has a separate inflow container and outflow container, that is, a total of four containers are provided. Compared with the technical integrated heat exchanger, the thickness in the blowing direction can be reduced. Moreover, by setting each container one by one, the caulking part when fixing each container can be decreased, and the thickness of a ventilation direction can be made still thinner. Therefore, since the thickness of the integrated heat exchanger in the air blowing direction is reduced, the mountability of the integrated heat exchanger can be further improved.

  Moreover, while arrange | positioning the 1st heat exchange part which cools low temperature cooling water on the windward side, only the flow path of low temperature cooling water is made to meander by the meandering partition provided in the low temperature cooling water division. As a result, the low-temperature cooling water is reciprocated several times between the low-temperature cooling water sections via the first heat exchange section, and the low-temperature cooling water is cooled by the first heat exchange section over a longer time than the high-temperature cooling water. can do. Thereby, the low temperature cooling water which needs to be cooled to a temperature zone lower than that of the high temperature cooling water can be reliably cooled to that temperature zone.

  In addition, since the meandering partition for meandering the flow path of the low-temperature cooling water is simply provided in each of the low-temperature cooling water compartments of the inflow container and the outflow container, it can be manufactured at low cost.

  Further, in the above integrated heat exchanger, the low-temperature cooling water is a cooling water for cooling circulating through an intake air cooling device that cools intake air supplied to a cylinder of an internal combustion engine by water cooling, and the high-temperature cooling water is Desirably, the internal combustion engine cooling water is used to cool the internal combustion engine.

In particular, in order to increase the charging efficiency of the intake air of the internal combustion engine and improve fuel efficiency, it is necessary to cool the intake air compressed by the supercharger, and a water-cooled intake air cooler that cools the intake air When a heat exchanger for cooling the cooling water for the cooler is separately provided, its mountability becomes a problem. However, according to the above configuration, the first heat exchange unit that cools the cooling water for the cooler of the water-cooled intake air cooler and the second heat exchange unit that cools the cooling water for the internal combustion engine that cools the internal combustion engine are combined. By adopting a body shape, the caulking portion for caulking each container and the integral heat exchange portion can be reduced, so that deterioration in mountability can be avoided.

  In addition, in the integrated heat exchanger described above, an opening area of a communication port between the inflow container and an external pipe provided in the low-temperature cooling water section of the outflow container is the inflow container and the outflow If it is formed smaller than the opening area of the communication port with the external pipe provided in the high-temperature cooling water section of the container for cooling, the amount of inflow and outflow to the integrated heat exchanger for low-temperature cooling water is used for the internal combustion engine. The flow rate suitable for the low-temperature cooling water having a flow rate smaller than that of the high-temperature cooling water and suitable for the flow path of the low-temperature cooling water configured to meander can be reduced.

  Furthermore, in the integrated heat exchanger, the first heat exchange unit and the second heat exchange unit are configured to share a plurality of heat radiation members that radiate heat, and each of the heat radiation members Heat transfer between the first heat exchange part and the second heat exchange part is provided between the first heat exchange part side and the second heat exchange part side by providing a plurality of gaps arranged in the flow direction of each cooling water. Since the area can be reduced, it is possible to suppress an increase in the temperature of the low-temperature cooling water due to the influence of the high-temperature cooling water. Moreover, compared with the structure which separates a 1st heat exchange part and a 2nd heat exchange part completely, the intensity | strength of an integrated heat exchanger can be improved by sharing the heat radiating member.

  On the other hand, in the integrated heat exchanger, when the predetermined gap is provided between the first heat exchange part and the second heat exchange part, the first heat exchange part and the second exchange part are completely separated from each other. Therefore, the heat conduction between the first heat exchange part and the second heat exchange part can be cut off. Thereby, it can avoid that the temperature of low temperature cooling water rises under the influence of high temperature cooling water.

  According to the integrated heat exchanger of the present invention, by providing a partition partition, one inflow container partitioned into a low-temperature cooling water section and a high-temperature cooling water section inside, as well as a low-temperature cooling water section and a high-temperature cooling By caulking and fixing one outflow container divided into water compartments on both sides of the integrated heat exchange section, the thickness in the blowing direction can be reduced. Moreover, by setting each container one by one, the caulking part when fixing each container can be decreased, and the thickness of a ventilation direction can be made still thinner. Therefore, since the thickness of the integrated heat exchanger in the air blowing direction is reduced, the mountability of the integrated heat exchanger can be further improved.

  Moreover, while arrange | positioning the 1st heat exchange part which cools low temperature cooling water on the windward side, only the flow path of low temperature cooling water is made to meander by the meandering partition provided in the low temperature cooling water division. Thereby, low temperature cooling water can be cooled in a 1st heat exchange part over time longer than high temperature cooling water. Thereby, the low temperature cooling water which needs to be cooled to a temperature zone lower than that of the high temperature cooling water can be reliably cooled to that temperature zone.

It is a figure which shows an example of a structure of an internal combustion engine provided with the integrated heat exchanger of 1st embodiment which concerns on this invention. It is the front block diagram which looked at the integrated heat exchanger of FIG. 1 from the windward side. It is the back surface block diagram which looked at the integrated heat exchanger of FIG. 1 from the opposite side of the windward side. It is the perspective sectional view which showed the cross section of a part of integrated heat exchanger of FIG. It is a figure which shows an example of a structure of an internal combustion engine provided with the integrated heat exchanger of 2nd embodiment which concerns on this invention. It is the front block diagram which looked at the integrated heat exchanger of FIG. 5 from the windward side.

  Hereinafter, an integrated heat exchanger according to an embodiment of the present invention will be described. In addition, since the meaning of an arrow differs for every drawing, it demonstrates previously. First, in FIG. 1, a white arrow indicates intake air, a solid arrow indicates exhaust, an alternate long and short dash line arrow indicates the cooling water Wc for the cooler, and a double dotted line arrow indicates the cooling water We for the internal combustion engine. In FIGS. 2 and 3, white arrows indicate the directions in which the cooling water flows.

  Moreover, let the ventilation direction to the integrated heat exchanger in FIGS. 1-3, FIG.5 and FIG.6 be x1, and let the direction which each cooling water flows downward in the perpendicular direction in FIG.2 and FIG.3, y1 direction, The direction that flows upward is the y2 direction.

  First, an example of an engine (internal combustion engine) 2 equipped with integrated radiators (integrated heat exchangers) 1A and 1B according to the first and second embodiments will be described. As shown in FIGS. 1 and 5, the engine 2 sends exhaust gas from the exhaust manifold 4 of the engine body 3 provided with cylinders to the first turbine 5a of the first turbocharger 5 and the second of the second turbocharger 6. The two turbines 6a and an exhaust gas purification device (not shown) are configured to discharge. On the other hand, the engine 2 sucks intake air supplied to the cylinders from the intake manifold 8 via the air cleaner 7, the second compressor 6 b of the second turbocharger 6, and the first compressor 5 b of the first turbocharger 5. Is configured to do. Further, the engine 2 is configured to circulate a part of the exhaust gas as intake air via the EGR cooler 9.

  The engine 2 includes a cooling system 10 including the integrated radiators 1A and 1B according to the first and second embodiments. The cooling system 10 includes an engine cooling channel 11 that cools the engine body 3 and a cooler cooling channel 12 that cools the intake air compressed by the first compressor 5b and the second compressor 6b.

  When the temperature of the engine main body 3 is low, the engine cooling passage 11 does not pass through the integrated radiators 1A and 1B by the first thermostat 13, and the engine main body 3 And is circulated through the water jacket of the engine body 3 and the EGR cooler 9. On the other hand, when the temperature of the engine body 3 is high, the first thermostat 13 is configured to cool the cooling water We for the internal combustion engine via the integrated radiators 1A and 1B.

  The cooler cooling channel 12 includes a first intake air cooler 15a provided between the first compressor 5b and the second compressor 6b, and a second intake air cooler 15b provided on the downstream side of the first compressor 5b. The cooling water Wc for the cooler whose temperature has risen in the above is sent to the second pump 17 by the second thermostat 16a and the third thermostat 16b, and is cooled by the second pump 17 via the integrated radiators 1A and 1B. .

  The cooling system 10 includes a fan 18 on the downstream side of the integrated radiators 1A and 1B, and a sub-tank 19 shared by the engine cooling channel 11 and the cooler cooling channel 12.

  Next, the integrated radiator 1A according to the first embodiment of the present invention will be described.

  As shown in FIG. 1, the integrated radiator 1 </ b> A includes an integrated core part (integrated heat exchange part) 20. The integrated core portion 20 includes a first core portion (first heat exchange portion) 21 that performs heat exchange of the cooling water Wc for the cooler and a second core portion (second heat portion) that performs heat exchange of the cooling water We for the internal combustion engine. The replacement part) 22 is arranged in order from the windward side.

  The integrated radiator 1 </ b> A is configured by providing one upper tank (inflow container) 23 and one lower tank (outflow container) 24 that are caulked and fixed to both sides of the integrated core part 20.

  In addition, as shown in FIG. 2, a partition partition 25a is provided in the upper tank 23, and the first core portion 21 side inside the upper tank 23 is a cooler cooling water compartment 23A for storing the cooler cooling water Wc, The two core part 22 side is defined as an internal combustion engine cooling water section 23B for storing the internal combustion engine cooling water We. Similarly, as shown in FIG. 3, a partition partition 25b is provided in the lower tank 24, and the first core portion 21 side inside the lower tank 24 is used as a cooling water partition 24A for storing the cooling water Wc for the cooler, and the second core. The portion 22 side is defined as an internal combustion engine cooling water section 24B for storing the internal combustion engine cooling water We.

  Further, as shown in FIG. 2, the integrated radiator 1A is provided with meandering partitions 26a and 26b in each of the cooling water compartment 23A and the cooling water compartment 24A, and the flow path of the cooling water Wc for the cooling device. Is configured to meander between the cooling water compartment 23A and the cooling water compartment 24A via the first core portion 21.

  As shown in FIG. 4, the first core portion 21 is formed of a metal having excellent heat dissipation, and communicates the upper tank 23 and the lower tank 24 with the first tube T1 through which the cooling water Wc flows. A heat radiation fin (heat radiation member) F formed in a wave shape so as to dissipate the heat of the tube T1 is laminated in the z direction. The second core portion 22 is formed by laminating a second tube T2 through which the cooling water We for the internal combustion engine flows and a radiation fin F that radiates heat of the second tube T2 in the z direction. And this 1st core part 21 and the 2nd core part 22 are comprised so that the radiation fin F may be shared.

  The radiation fin F is configured by providing a plurality of slits (gap) 27 arranged in a line in the y1 direction between the first core portion 21 side and the second core portion 22 side of the radiation fin F. The slit 27 is provided so that the first fin portion 21 side and the second core portion 22 side of the radiating fin F are connected to each other without completely separating the radiating fin F. Thus, by providing the some slit 27 between the 1st core part 21 side and the 2nd core part 22 side of the radiation fin F, the heat-transfer area of the 1st core part 21 side and the 2nd core part 22 side is provided. Is reduced.

  The upper tank 23 is formed of a synthetic resin and includes a caulking portion C. The upper tank 23 is fixed to the integrated core portion 20 by caulking the caulking portion C thereof. Similarly, the lower tank 24 is formed of a synthetic resin and includes a caulking portion C.

  The partition 25a provided in the upper tank 23 is a partition that divides the inside of the upper tank 23 into two in the x1 direction, which is the width direction of the upper tank 23. The partition partition 25a is formed of a synthetic resin and has a thickness of, for example, about 3 mm to 6 mm. Due to the partition 25a, a cooling water section 23A for the cooler and a cooling water section 23B for the internal combustion engine are formed inside the upper tank 23. The partition partition 25b provided in the lower tank 24 has the same configuration, and a cooling water partition 24A for the cooler and a cooling water partition 24B for the internal combustion engine are formed inside the lower tank 24 by the partition partition 25b.

  As shown in FIG. 2, the meandering partition 26 a is provided on the inflow side of the cooling water Wc for the cooler cooling water section 23 </ b> A of the upper tank 23. On the other hand, the meandering partition 26b is provided on the outflow side of the cooling water Wc for the cooling water in the cooling water section 24A for the cooling water in the lower tank 24.

  The meandering partition 26a forms a section A1 on the inflow side and a section A3 on the opposite side of the cooling water section 23A for the cooler of the upper tank 23. The meandering partition 26b forms a section A3 on the cooler cooling water section 24A of the lower tank 24. The section A4 is formed on the outflow side, and the section A2 is formed on the determination side.

  The cooling water compartment 23A for the cooler of the upper tank 23 is provided with a cooling water communication port 28a, and the cooling water compartment 23B for the internal combustion engine is provided with a cooling water communication port 29a for the internal combustion engine. And 29a, the piping P is connected. Similarly, the cooling water compartment 24A for the cooler of the lower tank 24 is provided with a cooling water communication port 28b, and the cooling water compartment 24B for the internal combustion engine is provided with a cooling water communication port 29b for the internal combustion engine. A pipe P is connected to 29b.

  The opening area of the cooling water communication port 28a provided in the upper tank 23 is smaller than the opening area of the cooling water communication port 29a provided for the internal combustion engine provided in the upper tank 23, and similarly provided in the lower tank 24. The opening area of the cooling water communication port 28 b thus formed is smaller than the opening area of the cooling water communication port 29 b for the internal combustion engine provided in the lower tank 24. This is because the flow rates of the cooling water Wc for the cooler and the cooling water We for the internal combustion engine are different from each other, and secondly, the flow path of the cooling water Wc for the cooling device is meandered as described above.

  Next, the operation of the integrated radiator 1A will be described. Here, a case where the temperature of the engine body 3 is sufficiently high will be described as an example. The inflow temperature of the cooling water Wc flowing into the upper tank 23 is 100 ° C., the inflow temperature of the cooling water We for internal combustion engine flowing into the upper tank 23 is 100 ° C., and the cooling water Wc of the cooling water flowing out from the lower tank 24 is The outflow temperature is 50 ° C., and the outflow temperature of the cooling water We for the internal combustion engine flowing out from the lower tank 24 is 90 ° C.

  First, the flow of the cooling water Wc for the cooler will be described with reference to FIG.

  The cooling water Wc for the cooler needs to be cooled from the inflow temperature 100 ° C. to the outflow temperature 50 ° C., and therefore flows into the first core portion 21 disposed on the windward side of the integrated core portion 20. The cooling water Wc for the cooler flows from the external pipe P into the cooling water communication port 28a of the upper tank 23, and the lower tank from the section A1 partitioned by the meandering partition 26a of the cooling water section 23A of the upper tank 23. It flows to the section A2 partitioned by the meandering partition 26b of the cooling water section 24A for the 24 coolers. The direction of the flow at this time is the y1 direction.

  Next, the cooling water Wc flows from the section A2 to the section A3 partitioned by the meandering partition 26a of the cooling water section 23A of the upper tank 23. The direction of the flow at this time is the y2 direction.

  Next, the cooling water Wc flows from the section A3 to the section A4 partitioned by the meandering partition 26b of the cooling water section 24A of the lower tank 24. The direction of the flow at this time is the y1 direction. Then, the cooling water Wc flows out from the section A4 to the external piping P from the cooling water communication port 28b of the lower tank 24.

  Next, the flow of the cooling water We for the internal combustion engine will be described with reference to FIG.

  The cooling water We for the internal combustion engine only needs to be cooled from the inflow temperature 100 ° C. to the outflow temperature 90 ° C. so as not to cool the engine body 3 more than necessary. It flows into the two core part 22. The cooling water We for the internal combustion engine flows into the cooling water communication port 29a for the internal combustion engine of the upper tank 23 from the external pipe P, and the cooling water compartment for the internal combustion engine of the lower tank 24 from the cooling water compartment 23B for the internal combustion engine of the upper tank 23. It flows to 24B. The direction of the flow at this time is the y1 direction. Then, the cooling water We for the internal combustion engine flows out from the cooling water communication port 29b for the internal combustion engine of the lower tank 24 to the external pipe P.

  According to the above-described integrated radiator 1A, the cooling water compartment 23A for the cooler and the upper tank 23 partitioned into the cooling water compartment 24B for the internal combustion engine by the partition 25a, and the cooling water compartment for the cooler by the partition 25b. 23A and the lower tank 24 divided into the cooling water compartment 24B for the internal combustion engine are fixed by caulking on both sides of the integrated core portion 20, thereby providing separate upper tanks and lower tanks for the core portions 21 and 22, respectively. The thickness in the x1 direction, which is the blowing direction, can be reduced as compared with a conventional integrated radiator in which a total of four tanks are provided in the body radiator. Further, by using one each of the tanks 23 and 24, the caulking portion C when the tanks 23 and 24 are fixed can be reduced, and the thickness in the blowing direction can be further reduced. Accordingly, the thickness of the integral radiator 1A in the x1 direction, which is the blowing direction, is reduced, so that the mountability of the integral radiator 1A on the vehicle can be further improved.

  First, the cooling water Wc for the cooler that needs to be cooled to a temperature range lower than the cooling water We for the internal combustion engine by disposing the first core portion 21 that cools the cooling water Wc for the cooling device on the windward side. Can be cooled to a target temperature range. Secondly, only the flow path of the cooling water Wc for the cooler is provided by the meandering partition 26a provided in the cooling water compartment 23A of the upper tank 23 and the meandering partition 26b provided in the cooling water compartment 24A of the lower tank 24. By meandering, the cooling water Wc for the cooler can be cooled over a longer time than the cooling water We for the internal combustion engine. Thereby, the cooling water Wc for the cooler that needs to be cooled to a temperature zone lower than the cooling water We for the internal combustion engine can be reliably cooled to that temperature zone.

  In addition, as shown in FIGS. 2 and 3, meandering partitions 26a and 26b that meander the flow path of the cooling water Wc are provided in the cooling water compartments 23A and 24A of the upper tank 23 and the lower tank 24, respectively. Because of the simple configuration, it can be manufactured at low cost.

  Further, as shown in FIG. 4, by providing slits 27 on the heat radiation fin F shared by the first core portion 21 and the second core portion 22, the first core portion 21 side and the second core of the heat radiation fin F are provided. It is possible to reduce the heat transfer area on the side of the portion 22 and suppress the heat conduction transmitted from the second core portion 22 to the first core portion 21. Further, the slits 27 provided in the heat radiating fins F do not completely separate the heat radiating fins F, so that the strength of the integrated core part 20 composed of the first core part 21 and the second core part 22 can be increased.

  In addition, the opening area of the cooling water communication port 28 a provided in the upper tank 23 and the opening area of the cooling water communication port 28 b provided in the lower tank 24 are the cooling for the internal combustion engine provided in the upper tank 23. The cooling water Wc for the cooler having a smaller flow rate than the cooling water We for the internal combustion engine is formed by being smaller than the opening area of the water communication port 29a and the opening area of the cooling water communication port 29b for the internal combustion engine provided in the lower tank 24. It is possible to flow into and out of the tanks 23 and 24 at a flow rate suitable for the flow path of the cooling water Wc for the cooler configured to meander and meander.

  Next, an integrated radiator 1B according to a second embodiment of the present invention will be described with reference to FIGS. In addition, about the member similar to 1st embodiment, the description is abbreviate | omitted using a same sign.

  The integrated radiator 1B includes an integrated core portion 30. The integrated core portion 30 performs heat exchange between the first core portion 31 that performs heat exchange of the cooling water Wc for the cooler and the cooling water We for the internal combustion engine. The second core portion 32 is arranged in order from the windward side.

  The first core portion 31 is formed of a metal excellent in heat dissipation, and radiates heat from the first tube T1 through which the cooling water Wc for the cooler flows through the upper tank 23 and the lower tank 24 and the first tube T1. The radiating fins F <b> 1 thus formed in a wave shape are stacked in the z direction. The second core portion 32 is formed by laminating, in the z direction, a second tube T2 through which the cooling water We for the internal combustion engine flows and a radiation fin F2 that radiates heat from the second tube T2.

  The integral core part 30 is configured by providing a predetermined gap 33 between the first core part 31 and the second core part 32.

  The gap 33 is a gap having a width of about 3 mm to 6 mm in the x1 direction, which is the blowing direction, and completely separates the first core portion 31 and the second core portion 32.

  Therefore, the integrated radiator 1B can completely separate the first core portion 31 and the second core portion 32 by providing the gap 33 between the first core portion 31 and the second core portion 32. Since it can do, the heat conduction between the 1st core part 31 and the 2nd core part 32 can be interrupted | blocked. Thereby, it can avoid that the temperature of the cooling water Wc for coolers rises by the influence of the cooling water We for internal combustion engines.

  Although the integrated radiators 1A and 1B of the above-described embodiment have been described as examples provided in the cooling system 10 of the engine 2 mounted on the vehicle, the present invention is not limited to this and is used. The present invention can be applied to a case where a plurality of radiators for cooling cooling water having the same pressure range and different temperature zones are integrated.

  Further, the integrated radiators 1A and 1B of the above embodiment have been described by taking the downflow type radiator as an example. However, the present invention is not limited to this, and may be applied to, for example, a crossflow type radiator. Can do.

  In addition, the configuration of the cooling system 10 including the integrated radiators 1A and 1B and the engine 2 including the cooling system 10 according to the above-described embodiment is an example, and the present invention is not limited to this configuration.

  In the integrated radiators 1A and 1B of the above-described embodiment, the meandering partitions 26a and 26b are provided to meander the flow path of the cooling water Wc for the cooler. However, the number of meandering partitions is increased. The number of times of meandering may be increased.

  Moreover, although the slit 27 provided in the radiation fin F of 1 A of integrated radiators of 1st Embodiment demonstrated the example arrange | positioned in the same position with all the radiation fins F, as shown in FIG. It is not limited to this. For example, the portions connecting the first core portion 21 side and the second core portion 22 side of the radiating fins F (portions where the slits 27 are not provided) may be located at different positions in each radiating fin F. According to this configuration, since the positions of the slits 27 are different for each radiating fin F, the strength of the integrated core portion 20 can be further increased.

The integrated heat exchanger of the present invention can improve the mountability by reducing the thickness in the air blowing direction, and can surely provide the cooling water for the cooler in the temperature zone lower than the cooling water for the internal combustion engine at the target temperature. Since it can cool to a belt, it can be used particularly for an internal combustion engine equipped with a water-cooled intake air cooler.

1A, 1B Integrated radiator (Integrated heat exchanger)
2 Engine (Internal combustion engine)
DESCRIPTION OF SYMBOLS 10 Cooling system 11 Engine cooling flow path 12 Cooler cooling flow path 15a First intake air cooler 15b Second intake air cooler 20 Integrated core part (integrated heat exchange part)
21 1st core part (1st heat exchange part)
22 2nd core part (2nd heat exchange part)
23 Upper tank (inflow container)
23A Cooling water compartment for cooler 23B Cooling water compartment for internal combustion engine 24 Lower tank (outflow container)
24A Cooling water compartment 24B Internal combustion engine cooling water compartment 25a, 25b Partition partition 26a, 26b Meander partition 27 Slit (gap)
Wc Cooling water for cooler We Cooling water for internal combustion engine

Claims (5)

An integrated type having an integrated heat exchanging unit configured by sequentially arranging a first heat exchanging unit and a second heat exchanging unit that perform heat exchange of cooling water in different temperature zones with the same operating pressure range from the windward side In the heat exchanger,
One inflow container and one outflow container that are caulked and fixed to both sides of the integrated heat exchange unit are provided, and a partition is provided in each of the inflow container and the outflow container, A low temperature cooling water section storing the low temperature cooling water heat-exchanged in the first heat exchange section and a high temperature heat exchanged in the second heat exchange section inside the outflow vessel by the partition partition. Compartment into a high-temperature cooling water compartment that stores cooling water,
Furthermore, a meandering partition is provided in each of the low-temperature cooling water compartment of the inflow container and the low-temperature cooling water compartment of the outflow container, and the flow path of the low-temperature cooling water is defined by the meandering partition, and the first heat An integrated heat exchanger configured to meander by reciprocating between the low-temperature cooling water section of the inflow container and the low-temperature cooling water section of the outflow container via an exchange section .   The low-temperature cooling water is used as cooling water for cooling that circulates through an intake air cooling device that cools intake air supplied to the cylinders of the internal combustion engine by water cooling, and the high-temperature cooling water is used as cooling water for internal combustion engines that cools the internal combustion engine. The integrated heat exchanger according to claim 1, wherein:   An opening area of a communication port between the inflow container and an external pipe provided in the low temperature cooling water section of the outflow container is provided in the high temperature cooling water section of the inflow container and the outflow container. The integrated heat exchanger according to claim 1, wherein the integrated heat exchanger is formed smaller than an opening area of a communication port with an external pipe.   The first heat exchanging part and the second heat exchanging part are configured to share a plurality of heat dissipating members that dissipate heat, and each of the first heat exchanging part side and the second heat dissipating member. The integrated heat exchanger according to any one of claims 1 to 3, wherein a plurality of gaps arranged in the flow direction of each cooling water are provided between the heat exchange portions.   The integrated heat exchanger according to any one of claims 1 to 3, wherein a predetermined gap is provided between the first heat exchange part and the second heat exchange part.

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