JP2016017722A - Header tank component and heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a header tank component constituting a header tank used in a heat exchanger and capable of integrally forming a packing portion even if the opening portion of the tank component is not a simple rectangular opening portion.SOLUTION: A header tank component 20B comprises: a sealing portion 50 interposed between a first partition portion 21B and a first plate portion 31, between a second partition portion 22B and a second plate portion 32, and between a third partition portion 23 and a third plate portion 33, entirely formed integrally by injection molding, and adhesively bonded to the first partition portion 21B, the second partition portion 22B, and the third partition portion 23, a gate portion corresponding to a gate for the injection molding being provided near the second partition portion 22B; and adjustment portions 533a and 533b formed by overflow of a resin material injected from the gate into the third partition portion 23.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a header tank component constituting a header tank of a heat exchanger, and a heat exchanger using the header tank component.

  As a heat exchanger such as a radiator used in an automobile, a plurality of tubes through which the cooling water passes, fins for heat dissipation provided in the tubes, and a temporary cooling water for distributing and collecting the cooling water to the plurality of tubes There is known a header tank that stores the above (see Patent Document 1 below). In the heat exchanger described in Patent Document 1, the header tank is constituted by a tank body and a core plate. The tank body is made of resin and forms a space for temporarily storing cooling water. Longitudinal ends of a plurality of tubes are brazed to the core plate. The core plate and the tank body are fixed by sandwiching a packing for ensuring hermeticity and bending a part of the core plate.

JP 2002-115991 A

  In the above conventional technique, in the process of assembling the tank, the core plate, the tank main body, and the packing are prepared, and positioned so that the packing is disposed at a predetermined position between the core plate and the tank main body. A part of the plate is bent and fixed. If the packing is provided separately from the core plate and the tank main body in this way, preparation and positioning of members are necessary in the assembling process, so that the process is complicated, and further simplification of the process is required.

  In general, the opening part of a container-like part is formed by using a material different from the material forming the container-like part while forming a packing-like part integrated with the container-like part. This is limited to the case where the container-like part has a simple shape, as in the case of a substantially rectangular shape. In this case, as an example of a method for forming the packing-like portion, a container-shaped part and a mold capable of forming the packing-like portion are used, and the resin for forming the packing-like portion is caused to flow from the gate for allowing the resin to flow. There is something. The resin flowing in from the gate branches in two directions along the opening, and then merges at the opposite gate portion. In this merged portion, the boundary of the resin flowing from the two routes remains as a weld line. When the container-shaped part is for storing cooling water like a header tank of a radiator, the weld line causes cooling water leakage. In view of this, a contrivance has been made such that the resin overflows out of the container-like part so that the weld line goes out of the container.

  By the way, the device of the weld line processing in the anti-gate portion is applied when the container-like part is simple to some extent. Since the tank body as described in Patent Document 1 is partitioned into a plurality of chambers, the opening does not form a simple rectangle and has a complicated shape including the separation between the chambers. It has become. Even if a packing-like portion is formed on the tank body having such a complicated shape, the merged portion of the inflowed resin is formed not only in the anti-gate portion but also in various places. The leak problem cannot be solved.

  The present invention has been made in view of such problems, and an object thereof is a header tank component that constitutes a header tank used in a heat exchanger, and an opening of the header tank component has a simple rectangular shape. An object of the present invention is to provide a header tank component capable of integrally forming a packing-like portion even if not formed, and a heat exchanger using the header tank component.

  In order to solve the above-mentioned problem, the header tank component of the present invention is a header tank component (20A, 20B, 20BA, 20BB) constituting a part of the header tank (10A, 10B) in the heat exchanger, A first storage space (21Aa, 21Ba) in which the first fluid is temporarily stored is formed between the first plate portion (31) provided with a plurality of first tubes (411) through which the fluid flows. Between the first partition portion (21A, 21B) and the second plate portion (32) in which a plurality of second tubes (421) through which the second fluid flows are continuously provided. The plurality of first tubes provided between the second partition portion (22A, 22B) forming the second storage space (22Aa, 22Ba) to be stored, and the first partition portion and the second partition portion. And the plurality of second tubes A third partition (23) that forms a non-reserving space (23a) in which no fluid is stored with the third plate portion (33) provided with the third tube (431) disposed between Resin interposed between the first partition portion and the first plate portion, between the second partition portion and the second plate portion, and between the third partition portion and the third plate portion. A sealing part made of injection molding, which is integrally formed by injection molding and bonded to the first partition part, the second partition part, and the third partition part, and is a gate for injection molding A sealing part (50, 50A, 50B) in which a gate part (521a) corresponding to the first partition part or the second partition part is provided, and a resin material injected from the gate is the third part. Formed by overflowing into the compartment Integer unit comprising (533a, 533b, 533aA, 533bA, 533aB, 533bB) and, the.

  In the header tank part of the present invention, the weld line is made to flow into the third compartment by overflowing the resin flowing from the gate by injection molding into the third compartment formed between the first compartment and the second compartment. Can be formed in the part. Since the third partition portion forms a non-reserving space in which no fluid is stored, it is not necessary to excise the resin even if the resin overflows in the third partition portion. Further, even if a resin is overflowed into the third partition portion to form a weld line, sealing on the first partition portion side and the second partition portion side is not affected. Therefore, even if the opening is not a simple rectangular shape but has a complicated shape formed by the first partitioning section, the second partitioning section, and the third partitioning section, there is a problem of foreign matter contamination and cooling water. The problem of leakage can be solved.

  The heat exchanger of the present invention includes a core plate (30) having the first plate portion, the second plate portion, and the third plate portion, and the header tank components (20A, 20B, 20BA, 20BB) described above. And a header tank formed by:

  The header tank component described above includes a header tank constituted by such a header tank component, because the problem of foreign matter mixing and the problem of leakage of cooling water can be solved even if the sealing portion is integrally formed by injection molding. The heat exchanger is more reliable.

  According to the present invention, it is a header tank component that constitutes a header tank used in a heat exchanger, and even if the opening of the header tank component does not form a simple rectangular shape, the packing-like portion is removed. It is possible to provide a header tank component that can be integrally formed, and a heat exchanger using the header tank component.

It is a perspective view which shows the external appearance of the heat exchanger which concerns on embodiment of this invention. It is a disassembled perspective view which expands and shows a part of heat exchanger shown in FIG. It is a figure which shows typically the type | mold structure at the time of shape | molding a sealing part integrally with respect to the header tank components shown in FIG. It is IV-IV sectional drawing of FIG. It is a perspective view for magnifying and explaining a part about the internal structure of the heat exchanger concerning an embodiment. It is VI-VI sectional drawing of FIG. It is a perspective view for magnifying and explaining a part about the internal structure of the heat exchanger concerning the 1st modification. It is VIII-VIII sectional drawing of FIG. It is a perspective view for magnifying and explaining a part about the internal structure of the heat exchanger concerning the 2nd modification. It is a plane sectional view for expanding and explaining a part about the internal structure of the heat exchanger concerning the 2nd modification.

  Hereinafter, an embodiment of the present invention (hereinafter referred to as this embodiment) will be described with reference to the accompanying drawings. In addition, in order to facilitate understanding of the description of the present embodiment, the same components are denoted by the same reference numerals as much as possible in each drawing, and redundant descriptions are omitted.

  Regarding the configuration of the header tank parts 20A and 20B and the heat exchanger HE using the header tank parts 20A and 20B according to the present embodiment, refer to FIG. 1, FIG. 2, FIG. 3, FIG. While explaining. The heat exchanger HE is used as a radiator of a hybrid vehicle. The heat exchanger HE functionally includes a first heat exchanger HE1 and a second heat exchanger HE2. The first heat exchanger HE1 is configured as a radiator for engine cooling water (first fluid). The second heat exchanger HE2 is configured as a radiator for electric cooling water (second fluid). The heat exchanger HE includes a header tank 10 </ b> A, a header tank 10 </ b> B, and a heat exchange unit 40 in terms of component configuration. The header tank 10 </ b> A and the header tank 10 </ b> B are arranged so as to sandwich the heat exchange unit 40. Subsequently, the component configuration of the heat exchanger HE will be described.

  The header tank 10 </ b> A includes a header tank component 20 </ b> A and a core plate 30. The header tank component 20A is a box-shaped component that is open on one side. The header tank part 20A and the core plate 30 are joined by disposing the core plate 30 on the opened one surface and bending and plastically deforming a part of the core plate 30. The header tank component 20A is, for example, a resin molded product formed by filling a mold with a resin containing fibers obtained by adding glass fibers as a reinforcing material to a polyamide resin. In order to ensure high thermal conductivity, the core plate 30 is preferably manufactured from aluminum having high thermal conductivity, for example.

  A plurality of first tubes 411, second tubes 421, and third tubes 431 are brazed and joined to the core plate 30 at their longitudinal ends. Further, between the first tube 411 and the first tube 411, between the second tube 421 and the second tube 421, between the third tube 431 and the third tube 431, between the first tube 411 and the third tube 431. The cooling fin 401 is provided between the second tube 421 and the third tube 431.

  The core plate 30 includes a first plate portion 31, a second plate portion 32, and a third plate portion 33. The third plate portion 33 is disposed between the first plate portion 31 and the second plate portion 32. The core plate 30 is a plate-like member in which a first plate portion 31, a second plate portion 32, and a third plate portion 33 are integrally formed, and includes a first tube 411, a second tube 421, and A predetermined opening is provided so that the third tube 431 can be fixed through. The first tube 411 is joined to the first plate portion 31. The second tube 421 is joined to the second plate portion 32. The third tube 431 is joined to the third plate portion 33.

  The first tube 411, the second tube 421, the third tube 431, and the cooling fin 401 constitute the heat exchange unit 40. The first tube 411, the second tube 421, the third tube 431, and the cooling fin 401 are preferably manufactured from, for example, aluminum having high thermal conductivity in order to ensure high thermal conductivity.

  The heat exchange unit 40 includes a first heat exchange unit 41, a second heat exchange unit 42, and a thermal strain relaxation unit 43. The plurality of first tubes 411 and the cooling fins 401 arranged between the plurality of first tubes 411 constitute the first heat exchange unit 41. The plurality of second tubes 421 and the cooling fins 401 arranged between the plurality of second tubes 421 constitute a second heat exchange unit 41. The plurality of third tubes 431 and the cooling fins 401 arranged between the plurality of third tubes 431 constitute a thermal strain relaxation portion 43.

  The header tank component 20A includes a component main body 20Aa and a sealing portion 50. The component main body 20Aa includes a first partition portion 21A, a second partition portion 22A, and a third partition portion 23. The third partition 23 is disposed between the first partition 21A and the second partition 22A. The first partition portion 21A, the second partition portion 22A, and the third partition portion 23 are substantially box-shaped portions opened in the same direction.

  21 A of 1st division parts are obstruct | occluded by the 1st plate part 31, and 1st storage space 21Aa which stores engine cooling water temporarily inside is formed. The first partition 21 </ b> A is provided with an inflow port 24 </ b> A near the end opposite to the third partition 23. The engine coolant flowing in from the inflow port 24A is temporarily stored in the first storage space 21Aa. The engine coolant temporarily stored in the first storage space 21Aa is divided into a plurality of first tubes 411 and flows out, and flows in the first tubes 411.

  22 A of 2nd division parts are obstruct | occluded by the 2nd plate part 32, and 2nd storage space 22Aa which stores electrical system cooling water temporarily is formed in an inside. An inlet 25A is provided in the second partition 22A. The electric system coolant flowing in from the inflow port 25A is temporarily stored in the second storage space 22Aa. The electrical cooling water temporarily stored in the second storage space 22Aa is divided into a plurality of second tubes 421 and flows out, and flows through the second tubes 421.

  The 3rd division part 23 is obstruct | occluded by the 3rd plate part 33, and the non-reservation space 23a in which a cooling water is not stored is formed inside. That is, the third tube 431 connected to the third plate portion 33 functions as a dummy tube through which cooling water does not flow. Here, cooling water having different temperatures flows through the first tube 411 in the first heat exchange unit 41 and the second tube 412 in the second heat exchange unit 42. Therefore, when the first tube 411 and the second tube 412 are provided adjacent to each other, the tube may be distorted due to a temperature difference. Therefore, as a measure against thermal distortion of the tube, the cooling water is not circulated through the third tube 431 but functions as the thermal strain relaxation unit 43. In order to provide the third tube 431 that does not circulate cooling water between the first tube 411 and the second tube 412, it is costly, such as plugging the tube or closing the hole of the core plate 30. Countermeasures are necessary. In this respect, the non-reserving space 23a in which the cooling water is not stored is formed, and the third tube 431 is provided in this portion, so that the third plate portion 33 and the third tube 431 are not subjected to special processing, and the dummy It can function as a tube.

  Next, the header tank 10B will be described. The header tank 10B includes a header tank component 20B and a core plate 30. The header tank component 20B is a box-shaped component that is open on one side. The header plate 20B and the core plate 30 are joined by arranging the core plate 30 on the opened surface and bending and plastically deforming a part of the core plate 30. The header tank component 20B is, for example, a resin molded product that is molded by filling a mold with a resin containing fibers obtained by adding glass fibers as a reinforcing material to polyamide resin.

  The header tank component 20B includes a component main body 20Ba and a sealing portion 50. The component main body 20Ba includes a first partition portion 21B, a second partition portion 22B, and a third partition portion 23. The 3rd division part 23 is arrange | positioned between the 1st division part 21B and the 2nd division part 22B. The first partition part 21B, the second partition part 22B, and the third partition part 23 are substantially box-shaped parts opened in the same direction.

  The first partition portion 21B is closed by the first plate portion 31, and a first storage space 21Ba for temporarily storing engine cooling water is formed therein. The first partition portion 21B is provided with an outlet 24B in the vicinity of the end portion on the third partition portion 23 side. Engine cooling water flows into the first storage space 21Ba from the plurality of first tubes 411. The engine coolant that has flowed in from the plurality of first tubes 411 is temporarily stored in the first storage space 21Ba. The engine coolant temporarily stored in the first storage space 21Ba flows out from the outlet 24B. The engine coolant that has flowed out of the outlet 24B circulates and cools the engine (not shown) and returns to the inlet 24A.

  The 2nd division part 22B is obstruct | occluded by the 2nd plate part 32, and 2nd storage space 22Ba which stores electrical system cooling water temporarily inside is formed. The second partition 22B is provided with an outlet 25B. Electric system cooling water flows from the plurality of second tubes 421 into the second storage space 22Ba. The electrical cooling water that has flowed in from the plurality of second tubes 421 is temporarily stored in the second storage space 22Ba. The electrical cooling water temporarily stored in the second storage space 22Ba flows out from the outlet 25B. The electrical cooling water flowing out from the outlet 25B circulates and cools an electrical system such as an electric motor or an inverter, and returns to the inlet 25A.

  As described above, the first partition part 21A, the first plate part 31 covering the part, the first heat exchange part including the first tube 411 and the cooling fin 401, the first partition part 21B, and the first part covering the part. The 1 plate part 31 comprises 1st heat exchanger HE1. The second partition part 22A, the second plate part 32 covering the part, the second heat exchange part including the first tube 421 and the cooling fin 401, the second partition part 22B, and the second plate part covering the part 32 comprises 2nd heat exchanger HE2.

  Next, the mutual relationship between the component main body 20Ba, the core plate 30, and the sealing portion 50 will be described with reference to FIG. In the following description, the header tank 10B side will be described as an example, but the same mutual relationship is configured on the header tank 10A side. FIG. 2 shows the component main body 20Ba and the sealing portion 50 separately for convenience of explanation, but in actuality, the sealing portion 50 is bonded to the component main body 20Ba to be integrally formed, and the header tank component. 20B is configured.

  The first partition portion 21B has side walls 212a and 212b in the longitudinal direction and side walls 232b (first side walls) in the short direction. The side wall 212a and the side wall 212b are disposed to face each other. The side wall 212a and the side wall 212b are connected to each other while being curved at the bottom portion on the side opposite to the opening side to which the sealing portion 50 is bonded. The side wall 232b is disposed to face the other side wall (not shown) in the lateral direction. The longitudinal side walls 212a and 212b, the short side wall 232b, and a side wall (not shown) form a peripheral wall surface and a bottom surface of the recess constituting the first storage space 21Ba.

  The second partition part 22B has side walls 222a and 222b in the longitudinal direction and side walls 232a (second side walls) in the short direction. The side wall 222a and the side wall 222b are disposed to face each other. The side wall 222a and the side wall 222b are connected while being curved to each other at the bottom portion opposite to the opening side to which the sealing portion 50 is bonded. The side wall 232a is disposed so as to face the other side wall (not shown) in the lateral direction. The peripheral side walls 222a and 222b in the longitudinal direction, the side wall 232a in the short side direction, and the side wall (not shown) form a peripheral wall surface and a bottom surface of the recess that constitutes the second storage space 22Ba.

  The third partition 23 has side walls 231a, 231b, 232a, and 232b. The side wall 231a and the side wall 231b are disposed to face each other. The side wall 231a is disposed so as to linearly connect the side wall 212a and the side wall 222a. The side wall 231b is disposed so as to linearly connect the side wall 212b and the side wall 222b. The side wall 232a is a wall that shares the upper part with the second partition part 22B, and is a wall that partitions the second partition part 22B and the third partition part 23. The side wall 232b is a wall sharing the upper part with the first partition part 21B, and is a wall that partitions the first partition part 21B and the third partition part 23.

  The third partition 23 has a bottom wall 233. The bottom wall 233 is disposed at a predetermined distance from the upper ends of the side walls 231a, 231b, 232a, and 232b. This predetermined distance is a distance set to such an extent that it does not interfere with the third tube 43 entering the third partition part 23.

  The sealing part 50 includes a first sealing part 51, a second sealing part 52, and a third sealing part 53. The first sealing portion 51 has sealing portions 512a and 512b that are tightly bonded to the upper ends of the side walls 212a and 212b constituting the first partition portion 21B. The second sealing portion 52 has sealing portions 522a and 522b that are tightly bonded to the upper ends of the side walls 222a and 222b constituting the second partition portion 22B.

  The third sealing portion 53 has sealing portions 531a, 531b, 532a, and 532b that are in close contact with the upper ends of the side walls 231a, 231b, 232a, and 232b that constitute the third partition portion 23. An adjustment portion 533a is provided in the approximate center of the sealing portion 532a. An adjustment portion 533b is provided in the approximate center of the sealing portion 532b.

  The sealing part 50 is intimately joined to each side wall upper end surface of the component main body 20Ba so as to be interposed between the component main body 20Ba and the core plate 30, and the first storage space 21Ba, the second storage space 22Ba, and the non-storage. A space 23a is formed.

  Subsequently, a formation mode of the sealing portion 50 will be described with reference to FIGS. 3 and 4. FIG. 3 is a view showing a cross section of a molding die 60 for integrally molding the component main body 20Ba and the sealing portion 50. As shown in FIG. The molding die 60 is provided with a closed space in which the component main body 20Ba and the sealing portion 50 are formed, and the component main body 20Ba and the sealing portion 50 are integrally formed by injecting resin into the closed space. It is molded into.

  First, the positional relationship between the molding die 60 and the component main body 20Ba when the sealing portion 50 is formed will be described with reference to FIG. FIG. 3 shows a longitudinal section of the component main body 20Ba, the sealing portion 50, and the molding die 60. The mold 60 has an outer mold 61 and an inner mold 62. The outer die 61 is engraved with the shape of the component main body 20Ba, and when the sealing portion 50 is formed, the component main body 20Ba constituting the header tank component 20A can be fixed from the outside. The component main body 20Ba is installed with the upper ends of the side walls 212a and 212b shown in FIG. Sealing portions 512a and 512b are formed between the molding die 60 arranged in this way and the upper ends of the side walls 212a and 212b of the component main body 20Ba. In such a positional relationship between the molding die 60 and the component main body 30Ba, the sealing portions 532a and 532b are formed so as to cross the center of the molding die 60 in the drawing, as indicated by broken lines in the drawing. Further, a retreating part 623a or a retreating part 623b, which is a part for forming the adjustment part 533a or the adjustment part 533b, is formed from the center of the sealing parts 532a and 532b upward in the figure.

  Next, the configuration of the inner mold 62 in the molding die 60 and the flow of the resin material when molding the sealing portion 50 will be described with reference to FIG. 4 shows a cross-sectional view taken along the line IV-IV in FIG. The inner mold 62 is engraved with an inner shape of the component main body 20Ba and an outer shape of the sealing portion 50, and is provided with a gate 621 and an anti-gate 622. The gate 621 is an inlet for injecting a resin material forming the component main body 20Ba and a resin material forming the sealing portion 50 into the mold. The anti-gate 622 is a portion where the resin material injected from the gate 621 finally flows, and the resin material flowing through a plurality of routes joins to form a weld line. The anti-gate 622 is formed so that the weld line is not formed in the component main body 20Ba or the sealing portion 50. Further, the first inner mold 623, the second inner mold 624, and the third inner mold 625 are integrally formed in the inner mold 62, and when the sealing portion 50 is molded, the component main body 20Ba is attached to the inner mold 62. It can be fixed from the inside. Further, the first inner mold 623 is provided so as to form the first sealing portion 51 that is tightly bonded to the first partition portion 21B and the upper end portion thereof. The second inner mold 624 is provided so as to form the second partition portion 22B and the second sealing portion 52 that is tightly bonded to the upper end portion thereof.

  The third inner mold 625 is provided so as to form the third partition portion 23 and the third sealing portion 53 that is tightly bonded to the upper end portion thereof. The third inner mold 625 is provided with retracted portions 625a and 625b. The receding portion 625a is provided so as to recede from the surface facing the second inner mold 624 to form a recess. The receding portion 625b is provided so as to recede from the surface facing the first inner mold 623 to form a recess. The retreating part 625a is a part for forming the adjustment part 533a, and the retreating part 625b is a part for forming the adjustment part 533b. In the step of molding the component main body 20Ba, the movable core enters the retreating portions 625a and 625b, and the resin material forming the component main body 20Ba does not enter the portions. In the step of forming the sealing portion 50, the movable core is configured to move away from the retracted portions 625a and 625b (core back).

  Then, the flow of the resin material at the time of shape | molding the sealing part 50 is demonstrated. The gate 621 is provided at an end portion on the second inner mold 624 side that forms the second sealing portion 52. The resin material injected from the gate 621 flows in while forming the sealing portion 521a, and is divided to form the sealing portions 522a and 522b. The resin material that flows while forming the sealing portions 522a and 522b further flows so as to form the sealing portions 531a and 531b. In the portion flowing into the sealing portions 531a and 531b, the flow is divided so as to form the sealing portion 532a. The resin material flows into the portion where the sealing portion 532a is formed from both the sealing portion 531a side and the sealing portion 531b side. The resin material that has flowed into the sealing portion 532a from both the sealing portion 531a side and the sealing portion 531b side flows into the receding portion 625a and joins. The resin material that has flowed into the retreating part 625a forms the adjusting part 533a.

  The resin material that flows while forming the sealing portions 531a and 531b further flows so as to form the sealing portions 512a and 512b. In the portion flowing into the sealing portions 512a and 512b, the flow is divided so as to form the sealing portion 532b. The resin material flows into the portion where the sealing portion 532b is formed from both the sealing portion 531a side and the sealing portion 531b side. The resin material that has flowed into the sealing portion 532b from both the sealing portion 531a side and the sealing portion 531b side flows into the receding portion 625b and joins. The resin material that has flowed into the retreating part 625b forms the adjusting part 533b.

  The resin material that has flowed while forming the sealing portions 512 a and 512 b further flows so as to form the sealing portions 511. The resin material flows into the portion where the sealing portion 511 is formed from both the sealing portion 512a side and the sealing portion 512b side. The resin material that has flowed into the sealing portion 511 from both the sealing portion 512a side and the sealing portion 512b side flows into the anti-gate 612 and merges. The resin material that has flowed into the anti-gate 622 forms the anti-gate portion 511a.

  When the first sealing portion 51, the second sealing portion 52, and the third sealing portion 53 are thus formed, the injection of the resin material from the gate 621 is stopped. A gate portion 521 a connected to the sealing portion 521 is formed in the gate 621.

  When the molding process described above is completed, the header tank component 20B including the component main body 20Ba and the sealing portion 50 is detached from the molding die 60, and the remaining portions of the gate portion 521a and the anti-gate portion 511a are reduced as much as possible. Disconnect. In such a molding process, the gate portion 521a and the anti-gate portion 511a are formed outside the first storage space 20Ba and the second storage space 22Ba, so that there is little possibility of contamination. In addition, since there is sufficient space, the other portions of the sealing portion 50 are not damaged when the gate portion 521a and the anti-gate portion 511a are cut.

  Moreover, the adjustment parts 533a and 533b, which are the joining points of the resin material, together with the anti-gate part 511a are formed in the non-reserving space 23a. Unlike the first storage space 20Ba and the second storage space 22Ba, the non-storage space 23a does not store a fluid therein. Therefore, the adjustment units 533a and 533b do not need special processing, and can be made as they are. In addition, even if a weld line is formed by overflowing the resin in the third partition 23, the sealing of the first partition 21B and the second partition 22B is not affected.

  Thus, even if the opening of the header tank component 20B is not a simple rectangular shape, but has a complicated shape such as formed by the first partition part 21B, the second partition part 22B, and the third partition part 23, By overflowing the resin material into the third partition 23, it is possible to provide the header tank component 20B and the heat exchanger HE free from the problem of foreign matter mixing and the leakage of cooling water.

  Subsequently, the adjustment portions 533a and 533b formed in the third partition portion 23 will be described with reference to FIG. FIG. 5 shows a state in which the sealing portion 50 is tightly joined to the upper end surfaces of the side walls of the component main body 20Ba. As described above, the adjustment portion 533a is formed in the approximate center of the sealing portion 532a, and the adjustment portion 533b is formed in the approximate center of the sealing portion 532b. The adjustment parts 533a and 533b are both formed so as to hang down along the wall surfaces of the side walls 232a and 232b from the side walls 232a and 232b toward the inside of the third partition part 23.

  FIG. 6 shows a VI-VI cross section in FIG. With reference to FIG. 6, the relationship between the adjustment parts 533a and 533b in the third partition part 23 and the third tube 431 when the core plate 30 is fixed to the header tank component 20B will be described.

  In FIG. 6, a state in which the third plate portion 33 and the third tube 431 are fixed to the third partition portion 23 of the header tank component 20 </ b> B is indicated by an imaginary line. The end portion in the longitudinal direction of the third tube 431 is in a state of being accommodated in the third partition portion 23. The adjustment units 533a and 533b are arranged so as not to interfere with the third tube 431.

  The installation width of the two third tubes 431 (the distance from the side surface of the third tube 431 disposed in proximity to the adjustment unit 533a to the side surface of the third tube 431 disposed in proximity to the adjustment unit 533b) is defined as d, Assuming that the width of the three compartments 23 (distance from the outer side surface of the side wall 232a to the outer side surface of the side wall 232b) is D1, D1 is the minimum size obtained by adding the dimensions of each part to d. More specifically, D1 = d + g + t1 + t2 when a gap g to be secured at a minimum between the third tube 431 and the adjusting portions 533a and 533b, a thickness t1 of the adjusting portions 533a and 533b, and a thickness t2 of the side walls 232a and 232b are set. It becomes the relationship.

  By providing the third partition portion 23 in the header tank parts 20A and 20B and forming the non-reserving space 23a, it is possible to secure a space for storing the tip portion of the third tube 431 fixed to the core plate 30. Conventionally, since such a space has not been formed, the third tube 431 is fixed to the core plate 30 by a method different from that of the first tube 411 and the second tube 421. Therefore, the third plate portion 33 of the core plate 30 needs to be processed differently from the first plate portion 31 and the second plate portion 32. In the present embodiment, the third tube 431 can be fixed through the core plate 30 without requiring special processing on the core plate 30.

  The non-reserving space 23a can store the third tube 431, and the adjusting portions 533a and 533b may be formed so as not to interfere with the third tube 431. In the example shown in FIG. 5, the adjustment portions 533 a and 533 b have a rectangular parallelepiped shape, as shown in FIG. 3, because the shapes of the retreating portions 623 a and 623 b of the molding die 60 that form the sealing portion 50 are formed. It is because it is a rectangular parallelepiped shape. It is possible to reduce the size of the non-reserving space 23a while securing the function of the adjusting portion in the present invention by modifying the form of each portion including the mold 60. Then, the modification from this viewpoint is demonstrated.

  With reference to FIG.7 and FIG.8, the 1st modification of the header tank component 20B which concerns on embodiment is demonstrated. In the first modification, the adjustment units 533aA and 533bA are changed to the configuration of the adjustment units 533a and 533b of the sealing unit 50 in the embodiment.

  As shown in FIG. 7 and FIG. 8, in the sealing portion 50A of the first modified example, the adjustment portions 533aA and 533bA are each composed of two portions, a wall portion 533aa and 533ba and a bottom portion 533ab and 533bb. . The wall portions 533aa and 533ba are portions formed along the wall surfaces of the side walls 232a and 232b. The bottom portions 533ab and 533bb are portions formed on the bottom wall 233 of the third partition portion 23.

  The adjusting portions 533a and 533b are formed only at portions along the side walls 232a and 232b. On the other hand, the adjusting portions 533aA and 533bA have not only portions along the side walls 232a and 232b but also bottom portions 533ab and 533bb which are portions along the bottom wall 233. In the first modification, a resin storage area 233a is formed in the bottom wall 233 of the component main body 20BAa, and bottoms 533ab and 533bb are formed in the resin storage area 233a. Since an amount of resin that forms the bottom portions 533ab and 533bb flows toward the bottom wall 233, the wall portions 533aa and 533ba can be formed thin.

  Also in FIG. 8, similarly to FIG. 6, the third plate portion 33 of the core plate 30 and the third tube 431 penetratingly fixed to the third plate portion 33 are indicated by imaginary lines. In sealing part 50A of this modification, by providing bottom parts 533ab and 533bb, wall parts 533aa and 533ba can be constituted thinner than adjustment parts 533a and 533b in an embodiment.

  If the installation width of the two third tubes 431 is d and the width of the third partition 23 is D2, D2 is the minimum dimension obtained by adding the dimensions of each part to d. More specifically, if a gap g to be secured at least between the third tube 431 and the wall portions 533aa and 533ba, a thickness t3 of the wall portions 533aa and 533ba, and a thickness t2 of the side walls 232a and 232b, D2 = d + g + t3 + t2 It becomes the relationship. As described above, since the wall portions 533aa and 533ba are thinned so as to satisfy the relationship of t3 <t1, D2 <D1 can be satisfied.

  In the first modification, the resin material constituting the sealing portion 50A overflows into the third partition 23 and is also stored in the resin storage region 233a formed on the bottom wall 233 of the third partition 23. ing. As a result, the adjusting portions 533aA and 533bA can be configured by two portions of the wall portions 533aa and 533ba and the bottom portions 533ab and 533bb formed along the side walls 232a and 232b, and the wall portions 533aa and 533ba are thinned. it can. The width D2 of the header tank part 20BA can be reduced, and the entire header tank can be reduced in thickness.

  Then, the 2nd modification of the header tank components which concern on embodiment is demonstrated, referring FIG.9 and FIG.10. The header tank component 20BB according to the second modification is obtained by changing the configuration of the side walls 232a, 232b of the header tank component 20B in the embodiment to form the side walls 232aB, 232bB.

  As shown in FIG. 9, recesses 232aa and 232ba are formed inside the third partition 23 of the side walls 232aB and 232bB. The recesses 232aa and 232ba are formed so as to scrape the side walls 232a and 232b into a square shape, and the recesses 232aa and 232ba are formed thinner than the other portions. The recesses 232aa and 232ba are provided at substantially central portions of the side walls 232a and 232b.

  In FIG. 10, in order to explain the state in which the resin material is poured into the recesses 232aa and 232ba and the adjustment portions 533aB and 533bB are formed, the portions of the side walls 232a and 232b are planar (direction along the opening of the component body 20BBa). The cross section cut | disconnected by is shown. As shown in FIG. 10, the resin material overflows into the recesses 232aa and 232ba to form the adjustment portions 533aB and 533bB of the sealing portion 50B.

  If the installation width of the two third tubes 431 is d and the width of the third partition 23 is D3, D3 is the minimum dimension obtained by adding the dimensions of each part to d. A gap g to be ensured between the third tube 431 and the adjusting portions 533aB and 533bB, a thickness t4 of the adjusting portions 533aB and 533bB, and a thickness t2 of the side walls 232a and 232b. If the thickness t6 specified as t6 = t2-t4 is a moldable thickness, t4 can be maximized within the range. If t4 is set within this range, the relationship D3 = d + g + t2 is established.

  If all of the overflowed resin material can be received by the recesses 232aa and 232ba formed at the depth t4 set as described above, D3 <D2 <D1 can be satisfied. Even in the case where all the overflowed resin material cannot be received in the recesses 232aa and 232ba, an area corresponding to the resin storage area 233a in the first modification described with reference to FIGS. 7 and 8 is provided, If the resin material is stored in the region, the resin does not swell in the thickness direction from the recesses 232aa and 232ba, and D3 can be minimized.

  The embodiments of the present invention have been described above with reference to specific examples. However, the present invention is not limited to these specific examples. In other words, those specific examples that have been appropriately modified by those skilled in the art are also included in the scope of the present invention as long as they have the characteristics of the present invention. For example, the elements included in each of the specific examples described above and their arrangement, materials, conditions, shapes, sizes, and the like are not limited to those illustrated, but can be changed as appropriate. Moreover, each element with which each embodiment mentioned above is provided can be combined as long as technically possible, and the combination of these is also included in the scope of the present invention as long as it includes the features of the present invention.

HE: heat exchangers 10A, 10B: header tanks 20A, 20B, 20BA, 20BB: header tank parts 30: core plate 31: first plate portion 32: second plate portion 33: third plate portion 50: sealing portion 533a , 533b, 533aA, 533bA, 533aB, 533bB: adjustment part 21A: first partition part 21Aa: first storage space 22A: second partition part 22Aa: second storage space 23: third partition part 23a: non-storage space 232b: 1st side wall 232a: 2nd side wall 411: 1st tube 421: 2nd tube 431: 3rd tube

Claims (5)

Header tank parts (20A, 20B, 20BA, 20BB) constituting a part of the header tank (10A, 10B) in the heat exchanger (HE),
A first storage space (21Aa, 21Ba) in which the first fluid is temporarily stored between a first plate portion (31) provided with a plurality of first tubes (411) through which the first fluid flows. A first partition (21A, 21B) forming
A second storage space (22Aa, 22Ba) in which the second fluid is temporarily stored between the second plate portion (32) provided with a plurality of second tubes (421) through which the second fluid flows. A second partition (22A, 22B) forming
A third portion is provided between the first partition portion and the second partition portion, and is provided with a third tube (431) disposed between the plurality of first tubes and the plurality of second tubes. A third partition (23) that forms a non-reserving space (23a) in which no fluid is stored with the plate portion (33);
Resin made between the first partition portion and the first plate portion, between the second partition portion and the second plate portion, and between the third partition portion and the third plate portion. The whole sealing part is integrally formed by injection molding and is bonded to the first partition part, the second partition part, and the third partition part, and is used as a gate for the injection molding. A sealing portion (50, 50A, 50B) in which a corresponding gate portion (521a) is provided on the first partition portion or the second partition portion side;
A header tank component comprising adjustment parts (533a, 533b, 533aA, 533bA, 533aB, 533bB) formed by overflowing the resin material injected from the gate into the third partition part. The first partition portion and the third partition portion share a first side wall (232b) that partitions each other at least in the upper portion thereof,
The second partition part and the third partition part share a second side wall (232a) that partitions each other at least in the upper part thereof,
The first side wall and the second side wall are formed so that a resin material injected from the gate flows into at least one of the first side wall and the second side wall into the third partition part. Header tank parts as described in   The resin storage area | region (233a) is formed in the bottom part of the said 3rd division part, At least one part of the said adjustment part (533aA, 533bA) is formed in the said resin storage area | region of Claim 1 or 2. Header tank parts.   Concave portions (232aa, 232ba) are formed on the wall surfaces of the first side wall and the second side wall on the third partition portion side, and at least a part of the adjusting portions (533aB, 533bB) is formed in the concave portion. The header tank part according to claim 1 or 2.   The header tank component (20A) according to any one of claims 1 to 4, and a plate (30) having the first plate portion (31), the second plate portion (32), and the third plate portion (33). , 20B, 20BA, 20BB), and a heat exchanger comprising a header tank formed by

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