JP5433178B2 - Heat exchanger - Google Patents

Description

  The present invention relates to a heat exchanger used in, for example, a vehicle air conditioner.

  Conventionally, as a heat exchanger used for a heater core of a vehicle air conditioner, a plurality of flat tubes and heat-transfer corrugated fins arranged alternately with a heat exchange medium flowing and intersecting the flow direction of external air are arranged alternately. There is known a heat exchanger that includes a core to be formed and two tanks that are arranged so as to be able to communicate with both ends of a tube, respectively (for example, see Patent Document 1). The heat exchanger of Patent Document 1 is installed so that the extending direction of the tube is along the vertical direction, and the tanks disposed at both ends of the tube are in a vertical positional relationship.

  The tank located above the heat exchanger has an inner space partitioned into an inflow side space and an outflow side space by a plate-like partition member extending in the longitudinal direction of the tank. The portion corresponding to the space is formed so as to bulge upward as compared with the portion corresponding to the outflow side space. An inflow pipe having an inflow hole is provided at an upper portion of the end wall in the bulged portion of the tank, the inflow hole communicates with the inflow side space, and an end of the tank in the unbulged portion In the upper part of the wall, an outflow pipe having an outflow hole is provided, and the outflow hole communicates with the outflow side space, that is, the inflow pipe and the outflow pipe are arranged at positions shifted vertically. As a result, when the heat exchange medium circulates in the heat exchanger, air that tends to accumulate in the upper part of the tank can be discharged by the flow of the heat exchange medium, so that air accumulation in the tank can be suppressed. It has become.

In addition, by shifting the inflow pipe and the outflow pipe in the vertical direction, the inner diameters of these pipes can be increased, and the flow rate of the heat exchange medium can be sufficiently secured, while the dimensions of the external air flow direction in the tank are shortened. Therefore, the heat exchanger is made thinner.
JP 2003-106788 A

  By the way, in the structure of patent document 1, in order to shorten the dimension of the flow direction of the external air in a tank while enlarging the internal diameter of an inflow pipe and an outflow pipe, an inflow pipe and an outflow pipe are shifted up and down, and it respond | corresponds to this. As described above, a portion corresponding to the inflow side space is bulged upward on the upper wall of the tank. However, since the capacity of the tank does not substantially contribute to the improvement of the heat exchange rate of the heat exchanger, it can be said that the heat exchanger of Patent Document 1 has an unnecessarily large size in the vertical direction of the tank.

  The present invention has been made in view of such points, and the object of the present invention is to increase the size of the inflow pipe and the outflow hole and the inflow hole in the outflow pipe while measuring the external air flow direction in the tank. In order to reduce the thickness of the heat exchanger and reduce the thickness of the heat exchanger, and to suppress the occurrence of air accumulation in the tank, the size of the tank is reduced to make the heat exchanger compact.

In order to achieve the above object, the first invention has a first tube group and a second tube group which are constituted by a plurality of tubes through which a heat exchange medium flows and which are arranged in a direction crossing the flow direction of the external air. A first space in which the first tube group communicates with an inner space of the tank; and a tank that is arranged to communicate with an end portion of the tube in the core and extends in a direction in which the tubes are arranged. And a partition member that partitions the second tube group into a second space that communicates with each other, and a peripheral wall portion of the tank has an inflow pipe that communicates with the first space and an outflow that communicates with the second space. A heat exchanger installed at an angle so that one end in the longitudinal direction of the tank is located above the other end, and the outflow is placed on a peripheral wall portion at one end in the longitudinal direction of the tank. Outflow connection to connect pipe The inflow connection hole for connecting the inlet pipe is close to each other at a position above the outflow connection hole is above the said inlet connection hole, and, arranged in parallel in the longitudinal direction of the tank, the partition member and, A first partition extending from an intermediate portion in the external air flow direction at the other end in the longitudinal direction of the tank to a position closer to one end in the longitudinal direction of the tank; and an outflow from the extending end of the first partition in the external air flow direction. And a second partition located between the inflow connection hole and the inflow connection hole.

  According to this configuration, since the inflow pipe communicates with the upper portion of the first space and the outflow pipe portion communicates with the upper portion of the second space at one end in the longitudinal direction of the peripheral wall portion of the tank, the first space and the second Air accumulated in the upper part of the space is discharged from the outflow pipe by the flow of the heat exchange medium flowing in from the inflow pipe. Further, since the inflow pipe and the outflow pipe are shifted in the longitudinal direction of the tank, the dimension of the tank in the external air flow direction can be shortened even if the diameter of the hole is increased. Furthermore, since the inflow pipe and the outflow pipe are provided in the peripheral wall portion of the tank, it is not necessary to displace the inflow pipe and the outflow pipe in the tube extending direction, so that the size of the tank in the tube extending direction is shortened. It becomes possible.

In the second aspect of the invention, in the heat exchanger according to claim 1, said first space extends from the flow direction downstream side of the external air in the other longitudinal end of the tank to the position in the longitudinal direction near one end of the tank No straight, the second space, after extending from the flow direction upstream side of the external air in the other longitudinal end of the tank to the one longitudinal end of the tank, a substantially L-shape extending in the outside air flow direction to Zheng Ru configuration.

According to this structure, when external air passes a heat exchanger, it becomes the structure with the best heat exchange rate.

In a third aspect of the invention, in the heat exchanger according to claim 1 or 2, the first partition and the second partition are separate parts.

According to this configuration, the partition member can be easily formed.

According to a fourth aspect of the present invention, in the heat exchanger according to claim 1 or 2, the first partition portion and the second partition portion are integrally formed products.

In a fifth aspect of the present invention, in the heat exchanger according to any one of claims 1 to 4, the inflow pipe and the outflow pipe are attached to the upper end of the peripheral wall portion of the tank.

According to this configuration, since the inflow hole and the outflow hole in the inflow pipe and the flow pipe communicate with the upper end of the peripheral wall portion of the tank, even if a small amount of air accumulates in the upper part of the tank, The heat exchange medium flowing in is discharged from the outflow pipe.

  In the first invention, the heat exchanger is installed so as to be inclined such that one side in the longitudinal direction of the tank is positioned higher than the other side, and the inflow pipe is disposed on one side in the longitudinal direction of the peripheral wall portion of the tank. Since the outflow pipe communicates with the upper portion of the first space and the upper portion of the second space, the air accumulated in the upper portions of the first space and the second space can be discharged out of the tank by the flow of the heat exchange medium. As a result, air accumulation can be suppressed, and the inflow pipe and outflow pipe are shifted in the longitudinal direction, so that the size of the tank in the direction of the external air flow can be shortened while increasing the diameter of the hole, and heat exchange The device can be made thinner. Furthermore, since the inflow pipe and the outflow pipe are provided in the peripheral wall portion of the tank, it is not necessary to displace the inflow pipe and the outflow pipe in the tube extending direction, so that the size of the tank in the tube extending direction is shortened. It is possible to reduce the size of the tank and the heat exchanger.

In the second invention, in the space divided into two in the tank, the space located on the upstream side in the flow direction of the external air passing through the heat exchanger is defined as the outflow side space, and the space located on the downstream side is defined as the inflow side. Since it is space, it can be set as the heat exchanger of a structure with a high heat exchange rate.

In the third aspect of the invention, since the first partition and the second partition are configured as separate parts, the inside of the tank can be configured with parts that can be easily molded and can be easily manufactured.

In the fourth invention, since the partition member is an integrally molded product, the number of parts is not increased, and an increase in assembly man-hours can be prevented.

In the fifth invention, since the inflow hole and the outflow hole in the inflow pipe and the outflow pipe communicate with the upper end of the peripheral wall portion of the tank, even if a small amount of air accumulates in the upper part of the tank, A heat exchanger that is discharged from the outflow pipe by the flow of the inflowing heat exchange medium and that is unlikely to cause air accumulation can be obtained.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the following description of the preferred embodiment is merely illustrative in nature, and is not intended to limit the present invention, its application, or its use.

Embodiment 1 of the Invention
1 and 2 show a heat exchanger 1 according to Embodiment 1 of the present invention. In Embodiment 1, the heat exchanger 1 is used for heat exchange for heating of a vehicle air conditioner (not shown). The case of a container will be described. Although not shown, the vehicle air conditioner includes a resin casing that is disposed inside the instrument panel of the passenger compartment and accommodates the heating heat exchanger, the cooling heat exchanger, various dampers, and the like. Yes.

  The heating heat exchanger 1 is a so-called heater core configured to circulate engine cooling water as a heat exchange medium. As shown in FIG. 2, the core 4 is formed by alternately arranging tubes 2 and fins 3. And a connector tank 5 and a return tank 6 provided at both ends of the tube 2 of the core 4. The tube 2 of the core 4 is a flat tube having a long cross-sectional shape in the direction of external air flow (indicated by an arrow W in FIG. 1), and is formed by molding an aluminum alloy. These tubes 2 are arranged in two rows in the flow direction of the external air. The fin 3 is a corrugated fin having a wave shape when viewed in the flow direction of the external air, and is formed by molding a thin plate made of an aluminum alloy. A brazing material is provided in layers on at least one surface of the members constituting the tube 2 and the fin 3. An end plate 7 that protects the fins 3 is provided at the outer end of the core 4. The tube 2, the fin 3 and the end plate 7 are joined and integrated by a brazing material.

  The connector tank 5 is for dividing the tube 2 into an upstream tube group on the upstream side in the external air flow direction and a downstream tube group on the downstream side. Engine cooling water flows into the connector tank 5. An inflow pipe 54 having an inflow hole 54a and an outflow pipe 55 having an outflow hole 55a through which engine coolant flows out are connected. On the other hand, the return tank 6 is for communicating the upstream tube group and the downstream tube group.

  The connector tank 5 has a substantially rectangular box shape extending long in the direction in which the tubes 2 and the fins 3 are arranged, and includes a header plate 51, a partition member 52, and a tank member 53 as shown in FIG. ing. The header plate 51 is made of an aluminum alloy, and has a substantially rectangular plate portion 51 a extending in the longitudinal direction of the connector tank 5, and a peripheral portion of the plate portion 51 a from a portion positioned in the flow direction of the external air to the core 4. It is comprised from a pair of plate side wall part 51b extended in the opposite direction to the side. A large number of tube insertion holes 51 c into which end portions of the tubes 2 are inserted are formed in the plate portion 51 a corresponding to the intervals of the tubes 2. The end of the tube 2 is brazed to the peripheral edge of the tube insertion hole 51c while being inserted into the tube insertion hole 51c. In this way, the end portion of the tube 2 is brazed, whereby the pressure resistance of the header plate 51 is ensured and the thickness can be reduced.

  The tank member 53 is formed of an aluminum alloy, is a substantially rectangular parallelepiped extending in the direction in which the tubes 2 are arranged, opens to the core 4 side, and extends from the peripheral edge of the tank plate 53a to the core 4 side. Among these, it is comprised from the end wall part 53b located in the longitudinal direction both ends, and the side wall part 53c located in the flow direction both ends of external air. As shown in FIG. 1, the side wall 53 c of the tank member 53 is formed so as to be positioned inside the plate side wall 51 b of the header plate 51. The peripheral wall portion 53d of the present invention is composed of a tank plate 53a and a side wall portion 53c of the tank member 53.

  A circular outflow connection hole 53e for connecting the outflow pipe 55 is formed on the tank plate 53a on the downstream side in the flow direction of the external air on one side in the longitudinal direction, and adjacent to the other side in the longitudinal direction of the outflow connection hole 53e. A circular inflow connection hole 53f for connecting the inflow pipe 54 is formed at the matching position. The outflow connection hole 53e and the inflow connection hole 53f are arranged in parallel in the longitudinal direction of the connector tank 5 at a position close to each other. Furthermore, in the tank plate 53a, at approximately the center of the air flow direction, four through-holes 53g that open in a slit shape are formed at equal intervals in the longitudinal direction at a position that bisects the upstream tube group and the downstream tube group. In addition, between the inflow connection hole 53f and the outflow connection hole 53e, one through hole 53h is formed that opens in a slit shape along the flow direction of the external air.

  The side wall 53c is formed with a notch 53i at a part on one side in the longitudinal direction.

  The partition member 52 is formed of an aluminum alloy plate material, and as shown in FIG. 3, extends across both ends in the longitudinal direction of the connector tank 5 and is disposed so as to extend substantially orthogonal to the inner wall surface of the tank plate 53a. The plate-like first partition member 52a and the plate-like second partition disposed so as to extend across both ends of the connector tank 5 in the air flow direction and extend substantially orthogonal to the inner wall surface of the tank plate 53a. It is comprised from the member 52b.

  The first partition member 52a includes a one-side first partition portion 52j and an other-side first partition portion by a notch portion 52e that is notched from the tank member 53 side toward the core 4 side on one side in the longitudinal direction. 52k. A substantially rectangular first communication hole 52d penetrating in the flow direction of the external air is formed in the one-side first partition 52j. On the other hand, the other first partition 52k extends from the external flow direction intermediate portion at the other end in the longitudinal direction of the connector tank 5 to a position near one end in the longitudinal direction of the connector tank 5, and the other first partition portion. On the peripheral edge of 52k, four positioning portions 52c, 52c,... That face through holes 53g, 53g,. As shown in FIG. 1, the protruding height of each positioning portion 52c is set so as to protrude outward from the outer surface of the tank plate 53a when inserted into the through hole 53g.

  The second partition member 52b has an upstream-side second partition portion 52l and a downstream-side second portion by a notch 52h that is notched from the core 4 side toward the tank member 53 side at the center in the air flow direction. It is divided into a partition 52m. The upstream second partitioning portion 52l is formed with a substantially rectangular second communication hole 52g penetrating in the longitudinal direction. On the other hand, the downstream second partition 52m extends in the direction of the external air flow from between the one first partition 52j and the other first partition 52k, and is connected to the outflow connection hole 53e and the inflow. It is located between the connection holes 53f. A positioning portion 52f is provided on the peripheral edge of the downstream second partitioning portion 52m so as to face the through hole 53h provided in the tank member 53. The protruding height of the positioning portion 52f is set to protrude outward from the outer surface of the tank plate 53a, like the first partition member 52a.

The partition member 52 is assembled by crossing the notch 52e in the first partition member 52a and the notch 52h in the second partition member 52b in a cross shape. As shown in FIG. 4, when the connector tank 5 is assembled, the inside of the connector tank 5 is partitioned by the partition member 52 into the other side first partition 52k and the downstream second partition 52m. It is partitioned into a space (first space) S1 and an other outflow side space (second space) S2. The inflow side space S <b> 1 has a linear shape extending from the downstream side in the external air flow direction at the other longitudinal end of the connector tank 5 to a position near one end in the longitudinal direction of the connector tank 5. The outflow space S2 has a substantially L-shape extending from the upstream side in the external air flow direction at the other longitudinal end of the connector tank 5 to the longitudinal end of the connector tank 5 and then extending in the external air flow direction. There is no. In addition, protrusions 52i and 52i are formed on the core 4 side at both ends of the second partition member 52b in the direction of external air flow. These protrusions 52i and 52i are formed on the side wall 53c of the tank member 53. It is formed so that it can be fitted into the notch 53i.

  As shown in FIGS. 1 and 2, the inflow pipe 54 has a substantially cylindrical shape, and the base end side is inserted into the inflow connection hole 53f. The inflow pipe 54 is provided with an inflow pipe expanding portion 54b whose outer shape expands stepwise as it moves away from the tank member 53 from the insertion site. The outflow pipe 55 has a substantially cylindrical shape, and the base end side is inserted into the outflow connection hole 53e. The outflow pipe 55 is provided with an outflow pipe expanding portion 55b whose outer shape expands stepwise as it moves away from the tank member 53 from the insertion site. Since the inflow pipe 54 and the outflow pipe 55 are attached to the connector tank 5 so that the central axes thereof are parallel to each other along the longitudinal direction of the connector tank 5, the inflow pipe 54 and the outflow pipe 55 are connected to each other in the extending direction of the tube 2. There is no need to displace them.

  A supply pipe (not shown) communicating with the engine coolant passage is connected to the tip of the inflow pipe 54, and a discharge pipe (not shown) communicating with the coolant passage is connected to the tip of the outflow pipe 55. )) Is connected.

  A brazing material is provided on the surfaces of the header plate 51 and the tank member 53. Both brazing members 51 and 53 are brazed by the brazing material, and the inflow pipe 54 and the outflow pipe 55 are brazed to the peripheral portions of the inflow connection hole 53f and the outflow connection hole 53e, respectively. The peripheral edge of 52 is brazed to the inner wall surface of the connector tank 5.

  On the other hand, the return tank 6 is made of an aluminum alloy and, unlike the connector tank 5, is not provided with the inflow pipe 54, the outflow pipe 55, and the partition member 52, and the header plate 61 and the tank member. 63 and two parts. The header plate 61 is the same member as the header plate 51, and the tank member 63 is a member that is a substantially rectangular parallelepiped extending in the arrangement direction of the tubes 2 and opens to the core 4 side.

  Next, the assembly of the heat exchanger 1 will be described. First, the core 4 is assembled with the tube 2, the fins 3, and the end plate 7, and bound with a binding tool (not shown). The ends of the tubes 2 bound in this way are inserted into tube insertion holes 51 c and 61 c (not shown) of the header plates 51 and 61, and the header plates 51 and 61 are assembled to the core 4. On the other hand, the cross-shaped partition member 52 is assembled by intersecting the notch 52e in the first partition member 52a and the notch 52h in the second partition member 52b. Then, the partition member 52 is assembled to the tank member 53 of the connector tank 5. When the partition member 52 is assembled to the tank member 53, the positioning portion 52c is inserted into the through hole 53g, the positioning portion 52f is inserted into the through hole 53h, and the protrusion 52i is fitted into the cutout portion 53i. Thereafter, the tank member 53 is assembled to the header plate 51, and the tank member 63 of the return tank 6 is assembled to the header plate 61.

  The intermediate part (not shown) in a state where the respective members are assembled as described above is conveyed into a brazing furnace. The brazing material of each part melts and flows in this furnace and reaches the brazing point. The heat exchanger 1 as shown in FIG.1 and FIG.2 is obtained by carrying out an intermediate part from the furnace and solidifying a brazing material. Each member may be assembled in an order other than the order described above.

  Next, the flow of engine cooling water in the heat exchanger 1 will be described. As shown in FIG. 4, the heat exchanger 1 is installed such that one side in the longitudinal direction of the tanks 5, 6 is positioned higher than the other side in the casing of the air conditioner. The engine coolant flows through the inflow pipe 54 into the inflow side space S1 located downstream in the external air flow direction inside the connector tank 5, and then flows into the return tank 6 through the tube 2 of the upstream side tube group. To do. The engine cooling water that has flowed into the return tank 6 flows through the tube 2 of the downstream tube group, and flows into the outflow side space S2 that is located upstream in the external air flow direction inside the connector tank 5. Then, after the engine cooling water is filled in the outflow side space S2, the engine cooling water flows out through the outflow pipe 55 to the outside.

  As mentioned above, according to the heat exchanger 1 by Embodiment 1, when installing the heat exchanger 1 inclining so that the longitudinal direction one side of the connector tank 5 may be located above the other side inside a vehicle, The inside of the connector tank 5 is divided into an inflow side space S1 and an outflow side space S2 by a partition member 52, an inflow pipe 54 is provided above one side in the longitudinal direction of the inflow side space S1, and the outflow pipe 55 is provided on the outflow side. Since it is provided above one side in the longitudinal direction of the space S2, when the engine coolant flows through the heat exchanger 1, air that accumulates in the upper part of the inflow side space S1 and the outflow side space S2 flows into the inflow pipe 54. Since the engine cooling water is discharged from the outflow pipe, the occurrence of air accumulation in the heat exchanger 1 can be suppressed. In addition, since the inflow pipe 54 and the outflow pipe 55 are provided adjacent to each other in the longitudinal direction of the connector tank 5, even if the inner diameters of the inflow pipe 54 and the outflow pipe 55 are increased, the flow direction of the external air in the connector tank 5 is increased. The dimensions can be shortened, whereby the heat exchanger 1 can be thinned. Furthermore, since the inflow pipe 54 and the outflow pipe 55 are provided on the peripheral wall portion of the tank and it is not necessary to displace the inflow pipe 54 and the outflow pipe 55 in the extending direction of the tube 2, the tube 2 in the connector tank 5 is provided. Therefore, the connector tank 5 can be miniaturized and the heat exchanger 1 can be made compact.

  Moreover, since the partition member 52 is configured by the first partition member 52a and the second partition member 52b, which are plate-shaped members that can be easily formed, a structure that can be easily assembled can be obtained.

  Note that, as in the modification shown in FIG. 5, the partition member 82 may be an integrally molded product. The connector tank 8 has a substantially rectangular box shape that extends in the direction in which the tubes 2 and the fins 3 are arranged, and includes a header plate 51, a partition member 82, and a tank member 83.

  The tank member 83 is formed of an aluminum alloy, is a substantially rectangular parallelepiped extending in the direction in which the tubes 2 are arranged, opens to the core 4 side, and extends from the peripheral edge of the tank plate 83a to the core 4 side from the peripheral edge of the tank plate 83a. Among them, it is composed of end wall portions 83b located at both ends in the longitudinal direction and side wall portions 83c located at both ends in the flow direction of the external air.

  A circular outflow connection hole 83e for connecting the outflow pipe 55 is formed on the tank plate 83a on the downstream side in the flow direction of the external air on one side in the longitudinal direction, and adjacent to the other side in the longitudinal direction of the outflow connection hole 83e. A circular inflow connection hole 83f for connecting the inflow pipe 54 is formed at the matching position. That is, the outflow connection hole 83e and the inflow connection hole 83f are arranged in parallel with each other at a position close to each other and in the longitudinal direction of the connector tank 8. Furthermore, in the tank plate 83a, four through-holes 83g that are opened in a slit shape are formed at equal intervals in the longitudinal direction at a position that is divided into an upstream tube group and a downstream tube group approximately at the center in the air flow direction. ing. And the notch part 83i is formed in the side wall part 83c in part in the external flow direction downstream in the longitudinal direction one side.

  The partition member 82 is a substantially L-shaped plate integrally formed of an aluminum alloy, and extends from a middle portion in the external air flow direction at the other end in the longitudinal direction of the connector tank 8 to a position near one end in the longitudinal direction of the connector tank 8. A plate-like first partition 82a disposed so as to extend substantially perpendicular to the inner wall surface of the tank plate 83a, and an extending end of the first partition 82a from the downstream side in the direction of external air flow to the upstream side And a plate-like second partition portion 82b disposed so as to extend substantially orthogonal to the inner wall surface of the tank plate 83a. The second partition portion 82b includes the outflow connection hole 83e and the It is located between the inflow connection holes 83f.

  Four positioning portions 82c, 82c,... Facing the through holes 83g, 83g,... Provided in the tank member 83 are projected at equal intervals on the peripheral edge of the first partition 82a. Yes. The protruding height of each positioning portion 82c is set so as to protrude outward from the outer surface of the tank plate 83a in a state of being inserted into the through hole 83g.

  A protrusion 82 i is formed on the core 4 side at the downstream end of the second partition 82 b in the direction of the flow of external air. The protrusion 82 i is formed on a notch 83 i formed on the side wall 83 c of the tank member 83. It is formed so that it can be fitted.

  As described above, if the partition member 82 is an integrally molded product, it is possible to prevent an increase in assembly steps without increasing the number of parts.

<< Embodiment 2 of the Invention >>
6 to 8 show a heat exchanger 10 according to Embodiment 2 of the present invention. In the heat exchanger 10 of the second embodiment, the connector tank 9 is different from the first embodiment only, and the other parts are the same. Different parts will be described in detail.

  The connector tank 9 has a substantially rectangular box shape extending long in the direction in which the tubes 2 and the fins 3 are arranged. As shown in FIGS. 6 and 7, the connector tank 9 includes a header plate 51, a partition member 92, and a tank member 93. It is configured.

  The tank member 93 is made of an aluminum alloy, and has a longer dimension in the tube extending direction of the end wall portion 93b and the side wall portion 93c than the tank member 53 of the first embodiment. As shown in FIG. 8, an outflow connection hole 93e for connecting the outflow pipe 55 is formed on the side wall 93c on the downstream side in the external air flow direction on one side in the longitudinal direction. An inflow connection hole 93f for connecting the inflow pipe 54 is formed at an adjacent position on the side, and the outflow connection hole 93e and the inflow connection hole 93f are close to each other and the connector tank. 9 are juxtaposed in the longitudinal direction.

  Moreover, the partition member 92 is a plate material integrally formed in an L shape similarly to the partition member 82 of the first embodiment, and the dimension in the tube extension direction matches the dimension in the tube extension direction of the end wall portion 93b. It is length. The inside of the connector tank 9 is partitioned by the partition member 92 into an inflow side space S3 on the downstream side in the air flow direction and an outflow side space S4 on the upstream side, and a portion of the partition member 82 that extends in the external air flow direction is And between the outflow connection hole 93e and the inflow connection hole 93f.

  As shown in FIGS. 6 to 8, the inflow pipe 54 has a proximal end portion inserted into the inflow connection hole 93 f so that the central axis of the inflow pipe 54 is along the air flow direction. Further, the outflow pipe 55 is inserted into the outflow connection hole 93e so that the center axis of the outflow pipe 55 is along the air flow direction.

  Next, the flow of engine cooling water in the heat exchanger 10 will be described. As shown in FIG. 8, the heat exchanger 10 is installed such that one side in the longitudinal direction of the tanks 9 and 6 is positioned higher than the other side. The engine cooling water flows through the inflow pipe 54 into the inflow side space S3 located downstream in the external air flow direction inside the connector tank 9, and then flows into the return tank 6 through the tube 2 of the upstream side tube group. To do. The engine coolant flowing into the return tank 6 flows through the tube 2 of the downstream tube group, flows into the outflow side space S4 located upstream in the external air flow direction inside the connector tank 9, and fills the outflow side space S4. After that, the engine cooling water is made outside through the outflow pipe 55.

  As mentioned above, according to the heat exchanger 10 by Embodiment 2, when installing the heat exchanger 10 inclining so that the longitudinal direction one side of the connector tank 9 may be located above the other side inside the vehicle, Since the inflow hole 54a and the outflow hole 55a in the inflow pipe 54 and the outflow pipe 55 are in communication with the central axis along the external air flow direction above the side wall portion 93c on the downstream side in the air flow direction. Even if a slight amount of air accumulates in the upper portions of the spaces S3 and S4, the engine cooling water flowing in from the inflow hole 54a is discharged from the outflow hole 55a, and the air pool is unlikely to occur. Can do.

In the first and second embodiments, the case where the heat exchangers 1 and 10 are heater cores has been described. However, the present invention also applies to the case where the heat exchangers 1 and 10 are, for example, an evaporator or a condenser of a refrigeration apparatus. It is possible to apply.

  As described above, the heat exchanger according to the present invention is suitable for, for example, a heating heat exchanger of a vehicle air conditioner mounted on an automobile.

It is a top view of the heat exchanger which concerns on Embodiment 1 of this invention. It is a front view of the heat exchanger which concerns on Embodiment 1 of this invention. FIG. 3 is an exploded perspective view of the connector tank in the first embodiment. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 and shows a state in which a heat exchanger is installed inside the vehicle. FIG. 6 is a view corresponding to FIG. 3 according to a modification of the first embodiment. It is a top view of the heat exchanger which concerns on Embodiment 2 of this invention. It is a front view of the heat exchanger which concerns on Embodiment 2 of this invention. FIG. 8 is a cross-sectional view taken along the line B-B in FIG. 7 and shows a state in which a heat exchanger is installed inside the vehicle.

1,10 Heat exchanger 2 Tube 3 Fin 4 Core 5, 8, 9 Connector tank (tank)
52, 82, 92 Partition member 52a, 82a First partition 52b, 82b Second partition 53d Peripheral wall 53e, 83e, 93e Outflow connection hole 53f, 83f, 93f Inflow connection hole 54 Inflow pipe 54a Inflow hole 55a Outflow Hole 55 Outflow pipe 6 Return tank W External air flow direction S1 Inflow side space (first space)
S2 Outflow side space (second space)
S3 Inflow side space (first space)
S4 Outflow side space (second space)

Claims (5)

A core having a first tube group and a second tube group composed of a plurality of tubes through which a heat exchange medium flows and is arranged in a direction crossing the flow direction of the external air;
A tank that is arranged to communicate with the end of the tube in the core and extends in the direction in which the tubes are arranged, and
In the internal space of the tank, a partition member is provided that partitions the first space in which the first tube group communicates with the second space in which the second tube group communicates,
On the peripheral wall of the tank,
An inflow pipe communicating with the first space;
An outflow pipe communicating with the second space is provided;
One end in the longitudinal direction of the tank is a heat exchanger that is installed so as to be positioned above the other end,
The peripheral wall portion of one longitudinal end of the tank, the position of the outflow connection hole and the outlet connection hole and inlet connection hole from the inlet connection hole for connecting the inlet pipe connecting said outlet pipe is above in close proximity to one another, and are arranged in the longitudinal direction of the tank,
The partition member includes a first partition portion extending from an intermediate portion in the external air flow direction at the other longitudinal end of the tank to a position near one end in the longitudinal direction of the tank, and an external air flow direction from the extending end of the first partition portion. And a second partition located between the outflow connection hole and the inflow connection hole. The heat exchanger according to claim 1 ,
It said first space forms a straight line extending from the flow direction downstream side of the external air in the other longitudinal end of the tank to the position in the longitudinal direction near one end of the tank,
The second space, after extending from the flow direction upstream side of the external air in the other longitudinal end of the tank to the one longitudinal end of the tank, characterized that you have a substantially L-shape extending in the outside air flow direction Heat exchanger. The heat exchanger according to claim 1 or 2,
The heat exchanger according to claim 1, wherein the first partition part and the second partition part are separate parts. The heat exchanger according to claim 1 or 2,
A heat exchanger characterized in that the first partition part and the second partition part are integrally formed. The heat exchanger according to any one of claims 1 to 4,
The heat exchanger, wherein the inflow pipe and the outflow pipe are attached to an upper end of a peripheral wall portion of the tank .

Images