JP2007127347A - Tank structure for heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank structure for a heat exchanger capable of optimizing the position of a hole to a tube. <P>SOLUTION: This tank structure for the heat exchanger is provided with a pair of tanks 1 and 2 arranged at a predetermined interval and a core part 3, which is constructed of a plurality of tubes 4 fixed to be passed through a pair of tanks 1 and 2 and fins 5 arranged between the adjacent tubes 4, and the inside of each of the tanks 1 and 2 is divided by a partition board 9 having a plurality of holes 9a. In this tank structure, the end parts 4a of the tubes and the holes 9a are arranged face to face. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tank structure of a heat exchanger.

Conventionally, it is composed of a pair of tanks arranged at a predetermined interval, a plurality of tubes fixed in a state of being inserted through the pair of tanks, and fins arranged between the adjacent tubes. A technology of a tank structure of a heat exchanger in which at least one of the two tanks is partitioned by a partition plate having a plurality of holes is known (see Patent Document 1). ).
Japanese Patent No. 3373940

  However, in the conventional heat exchanger tank structure, there is a possibility that the performance of the heat exchanger may be reduced depending on the position and number of holes formed in the tube, or the time and labor during manufacturing may increase, leading to an increase in cost.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tank structure of a heat exchanger that can optimize the position of the hole with respect to the tube.

  According to the first aspect of the present invention, a pair of tanks arranged at a predetermined interval, a plurality of tubes fixed in a state of being inserted through the pair of tanks, and between the adjacent tubes In the tank structure of the heat exchanger, wherein the tube is provided with a core portion composed of fins disposed on the inside, and at least one of the two tanks is partitioned by a partition plate having a plurality of holes. The end of each of the above and each of the holes are arranged to face each other.

  In the first aspect of the present invention, a pair of tanks arranged at a predetermined interval, a plurality of tubes fixed in a state of being inserted through the pair of tanks, and the adjacent tubes In a tank structure of a heat exchanger that includes a core portion configured with fins arranged between each other, and in which at least one of the two tanks is partitioned by a partition plate having a plurality of holes Since the end of the tube and the hole are arranged to face each other, the position of the hole with respect to the tube can be optimized.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
In the first embodiment, a case where the heat exchanger is applied to a capacitor will be described.
1 is a front view of a heat exchanger that employs a tank structure for a heat exchanger according to a first embodiment of the present invention, FIG. 2 is an exploded view thereof, and FIG. 3 is an exploded perspective view of the tank 1 in the vicinity of arrow A in FIG. 4 is a front view of the partition plate, FIG. 5 is a right side view thereof, FIG. 6 is a plan view thereof, and FIGS. 7 to 9 are views for explaining assembly of the tank.
FIG. 10 is a diagram for explaining the flow of the circulation medium in the tank 1 and explaining the operation. FIG. 11 is a diagram for explaining the flow of the circulation medium in the tank 2 and explaining the operation. FIG. 13 is a front view showing a downflow type heat exchanger.

First, the overall configuration will be described.
As shown in FIGS. 1 and 2, the heat exchanger employing the heat exchanger tank structure of the first embodiment includes a pair of tanks 1 and 2 arranged on the left and right sides with a predetermined interval, and both tanks. The core part 3 arrange | positioned between 1 and 2 is provided.

Both tanks 1 and 2 are partitioned by partition plates 9 described later to form first tank chambers R1 and R3 and second tank chambers R2 and R4.
The tank 1 is provided with a connector P1 in communication with the first tank chamber R1, while the tank 2 is provided with a connector P2 in communication with the second tank chamber R4.
Further, patches T1 and T2 are attached to both longitudinal ends of both tanks 1 and 2, respectively.

  The core portion 3 includes a plurality of flat tubular tubes 4 whose both ends are inserted and fixed to a tube plate 8 which is also a constituent member of the tanks 1 and 2, and a plurality of wavy shapes arranged between adjacent tubes 4. The upper and lower ends of the fins 5 are connected and reinforced by a pair of reinforcements 6 and 7 inserted and fixed to the tube plates 8 of the tanks 1 and 2.

Since the tanks 1 and 2 have a symmetrical shape except that the attachment positions of the connectors P1 and P2 are different, only the tank 1 will be described in detail below.
As shown in FIGS. 2 and 3, the tank 1 includes a tube plate 8, a partition plate 9, a tank plate 10, patches T1 and T2, and a connector P1.

  The tube plate 8 is formed in a plate shape having a substantially U-shaped cross section, and is formed with a tube hole 8a into which the end portion 4a of each tube of the core portion 3 is inserted and fixed. Further, a reinforcement hole 6a is formed in the vicinity of the tube hole 8a at the outermost end, in which the corresponding reinforcements 6 and 7 are inserted and fixed.

As shown in FIGS. 3 to 6, the partition plate 9 is formed in a plate shape having a substantially bowl-shaped cross section, and holes 9 a are arranged so as to face the end portions 4 a of the respective tubes (see FIG. 10). ).
In addition, the hole 9a of the first embodiment is formed in a circular shape having a diameter of 6 mm, and the opening cross-sectional area thereof is 1.5 times the opening cross-sectional area of the end portion 4a of the tube. The hole 9a is not limited to a circular shape, and may be formed in a long hole shape.

The tank plate 10 is formed in a plate shape having a substantially U-shaped cross section, and a communication hole 10a is formed at a portion where the connector P1 is fixed.
A plurality of protrusions 11 are provided on the inner side of the tube plate 8 and the tank plate 10 to prevent displacement of the partition plate 9a with respect to the tank 1. Note that the shape, number of formation, and formation position of the protrusions 11 can be set as appropriate.

  The connector P1 is formed in a substantially rectangular parallelepiped shape, and further includes a connection hole 13a communicating with the communication hole 10a and a screw hole 13b for fixing a vehicle body side connection pipe (not shown).

  The patches T1 and T2 are formed in a substantially square plate shape, and an insertion portion 12 protruding in the vertical direction is formed on the surface mounted on the tank 1.

  In addition, the constituent members of the heat exchanger of Example 1 are all made of aluminum, and a clad layer (brazing sheet) made of a brazing material is provided on at least one side of the joints of the constituent members.

Next, the operation will be described.
In order to manufacture the heat exchanger configured as described above, first, the tube 4, the fin 5, and the reinforcement 6 and 7 are laminated, and then the tube plate 8 is assembled to both ends in the longitudinal direction to attach the core portion 3. Temporarily assemble.
Next, as shown in FIGS. 3 and 7, the tube plate 8 and the tank plate 10 are overlapped in the middle with the partition plate 9 interposed between the left and right sides of the core portion 3.
At this time, the end portions of the opposite side walls 8b, 8b of the tube plate 8 and the end portions of the opposite side walls 10b, 10b of the tank plate 10 are in contact with each other.
Further, the opposing side walls 9b, 9b of the U-shaped cross section of the partition plate 9 are in contact with the side walls 8b, 8b and the side walls 10b, 10b while being positioned by the plurality of protrusions 11.

Next, as shown in FIGS. 8 and 9, the tanks 1 and 2 are mounted on the left and right sides of the core 3 by attaching patches T1 and T2 respectively corresponding to the longitudinal ends of the tube plate 8 and the tank plate 10. Form.
At this time, when the insertion portion 12 of the patches T1 and T2 contacts the partition plate 9 in the tank 1, the inside thereof is partitioned into the first tank chamber R1 and the second tank chamber R2 by the partition plate 9, while the tank 2 Similarly to the tank 1, the inside of the tank 1 is divided into a first tank chamber R3 and a second tank chamber R4 by a partition plate 9.

  Next, the connection hole 13a of the connector P1 is made to communicate with the communication hole 10a of the tank plate 10 of the tank 1, and the connector P1 is temporarily fixed with a jig (not shown). Similar to the tank 1, the connector P2 is temporarily fixed with a jig not shown.

  The heat exchanger temporarily assembled as described above is transported to a heating furnace (not shown) and subjected to heat treatment, whereby the contact portions of the respective constituent members are brazed and fixed to be integrally formed.

  The connectors P1 and P2 of the heat exchanger mounted on the vehicle are connected to a vehicle-side connection pipe (not shown), and the communication between the connection hole 13a of the connector P1 and the tank plate 10 from the compressor side (not shown). The circulation medium at about 70 ° C. flowing into the first tank chamber R1 of the tank 1 through the hole 10a flows into the second tank chamber R2 through the hole 9a of the partition plate 9 of the tank 1.

  Next, the flow medium in the second tank chamber R2 flows through each tube 4 and flows into the first tank chamber R3 of the tank 2 while passing through the core section 3 or the forced wind by the fan and the fins 5. After being cooled to about 45 ° C. by heat exchange via the, it flows into the first tank chamber R 3 of the tank 2.

  Next, the flow medium in the first tank chamber R3 of the tank 2 flows into the second tank chamber R4 through the hole 9a of the partition plate 9 of the tank 2, and then the evaporator (not shown) from the connection hole 13a of the connector P2. It is discharged to the side and functions as a capacitor.

  At this time, as shown in FIG. 10, inside the tank 1, the holes 9 a of the partition plate 9 of the tank 1 and the tube 4 are disposed so as to face each other. Evenly flows into the second tank chamber R2 through the holes 9a, whereby the flow medium in the second tank chamber R2 can be circulated in a uniformly rectified state to the end portions 4a of each tube, The cooling performance of the exchanger can be improved.

  On the other hand, as shown in FIG. 11, in the tank 2, the flow medium in the first tank chamber R <b> 3 flows uniformly into the second tank chamber R <b> 4 through the holes 9 a of the partition plate 9, so that the adjacent tubes 4 The flow medium in the first tank chamber R3 can be uniformly rectified and flowed into the second tank chamber R4 without being affected by the flow medium discharged from the tank.

Here, the result of having prepared a plurality of heat exchangers with different conditions as described below and conducting a heat dissipation test is shown in FIG.
The heat exchanger used in the heat dissipation test is a so-called cross-flow type heat exchanger in which a pair of tanks 1 and 2 are arranged on the left and right sides of the core part 3 as in the first embodiment. In the so-called downflow type heat exchanger in which the ratio (horizontal / vertical) is 1.5 and the pair of tanks 1 and 2 are arranged above and below the core 3 as shown in FIG. A type Y having an aspect ratio (horizontal / vertical) of 0.7 with a core size of 3 and a type Z having an aspect ratio of 2.1 were used.
The opening cross-sectional area of the tube 4 is equal to the cross-sectional area of the opening of the hole 9a of and 4mm diameter about 13 mm ^2.

  As shown in FIG. 12, the cross flow type heat exchanger (type X) as in the first embodiment is configured such that the opening sectional area of the hole 9a is 1.5 times the opening sectional area of the tube 4, The position and size of the hole 9a with respect to the tube 4 can be optimized, and the heat dissipation performance of about 5.5% at maximum can be improved as compared with the case where the partition plates 9 are not provided in the tanks 1 and 2.

  Further, the downflow type heat exchanger (type Y, Z) can optimize the position and size of the hole 9a with respect to the tube 4 by making the opening cross-sectional area of the hole 9a and the opening cross-sectional area of the tube 4 equal. Compared with the case where the partition plates 9 are not provided in the tanks 1 and 2, the heat radiation performance can be improved by about 1.4% at maximum.

  In addition, in the type X to Z heat exchanger, when the number of holes 9a is increased or decreased from the number of tubes 4, or when the holes 9a and the end portions 4a of the tubes are arranged offset rather than facing each other, heat is dissipated. The performance deteriorated, and practical use was difficult.

Next, the effect will be described.
As described above, in the tank structure of the heat exchanger according to the first embodiment, the pair of tanks 1 and 2 disposed at a predetermined interval and the pair of tanks 1 and 2 are inserted. A core portion 3 composed of a plurality of tubes 4 fixed in a state and fins 5 arranged between adjacent tubes 4, and the insides of both tanks 1, 2 have a plurality of holes 9 a. In the tank structure of the heat exchanger partitioned by the partition plate 9, since the end 4a and the hole 9a of the tube are arranged to face each other, the hole for the tube 4 is not caused without deteriorating the performance of the heat exchanger or increasing the labor for manufacturing. The position of 9a can be optimized.

  Also, since the pair of tanks 1 and 2 are arranged on the left and right of the core portion 3 and the opening cross-sectional area of the hole 9a is about 1.5 times the opening cross-sectional area of the tube 4, the pair of tanks 1 and 2 are placed in the core portion 3. It is possible to optimize the size of the hole 9a with respect to the tube 4 of the heat exchanger arranged on the left and right of the.

  In addition, the pair of tanks 1 and 2 are arranged above and below the core portion 3 so that the opening cross-sectional area of the hole 9a and the opening cross-sectional area of the tube 4 are substantially equal. The size of the hole 9a for the tube 4 of the heat exchanger can be optimized.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, in the first embodiment, the partition plates 9 are provided in both the tanks 1 and 2, but it is naturally conceivable that they are provided only on one side.
Moreover, the heat exchanger is not limited to the condenser, and may be applied to a general heat exchanger such as a radiator, an oil cooler, an intercooler, etc. It becomes the category of invention.

It is a front view of the heat exchanger by which the tank structure of the heat exchanger of Example 1 of this invention was employ | adopted. It is a front exploded view of the heat exchanger by which the tank structure of the heat exchanger of Example 1 of the present invention was adopted. It is a disassembled perspective view of the tank 1 in the arrow A vicinity of FIG. It is a front view of a partition plate. It is a right view of a partition plate. It is a top view of a partition plate. It is a figure explaining the assembly | attachment of the tank. It is a figure explaining the assembly | attachment of the tank. It is a figure explaining the assembly | attachment of the tank. It is a figure explaining the flow of the distribution medium in tank 1, and is a figure explaining an operation. It is a figure explaining the flow of the distribution medium in tank 2, and is a figure explaining an operation. It is a figure which shows a heat dissipation performance test result. It is a front view which shows a downflow type heat exchanger.

Explanation of symbols

P1, P2 Connectors R1, R3 First tank chamber R3, R4 Second tank chamber T1, T2 Patch 1, 2 Tank 3 Core portion 4 Tube 4a (tube) end 5 Fin 6, 7 Reinforce 6a Reinforce hole 8 Tube plate 8a Tube hole 8b Side wall 9 Partition plate 9a Hole 9b Side wall 10 Tank plate 10a Communication hole 10b Side wall 11 Projection part 12 Insertion part 13a Connection hole 13b Screw hole

Claims (3)

A pair of tanks arranged at predetermined intervals;
A plurality of tubes fixed in a state of being inserted through the pair of tanks, and a core portion configured by fins disposed between the adjacent tubes,
Among the two tanks, in the tank structure of the heat exchanger in which the inside of the tank on at least one side is partitioned by a partition plate having a plurality of holes,
A tank structure of a heat exchanger, wherein an end of the tube and the hole are arranged to face each other. In the tank structure of the heat exchanger according to claim 1,
The pair of tanks are arranged on the left and right of the core part,
A tank structure of a heat exchanger, wherein the opening cross-sectional area of the hole is 1.5 times the opening cross-sectional area of the tube. In the tank structure of the heat exchanger according to claim 1,
The pair of tanks are arranged above and below the core part,
A tank structure for a heat exchanger, wherein the opening cross-sectional area of the hole and the opening cross-sectional area of the tube are equal.

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