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Tank structure of heat exchanger

Inactive Publication Date: 2010-09-16
CALSONIC KANSEI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]In the first invention, the tank structure of the heat exchanger, in which the end portions of the plurality of tubes are inserted in and fixed to the bottom portion of the tank that is made of aluminum material, has the bead that is provided at the position of the tube side heading from the half position of the height of the side wall portion of the tank to extend in the direction perpendicular to the longitudinal direction of the tubes. Therefore, the tank can be prevented from being deformed due to thermal shock generated when the tubes of the heat exchanger thermally expand and contract. In addition, a flow amount of flowing medium in the tank can be uniformed.
[0008]In the second invention, the tank structure of the heat exchanger, in which the end portions of the plurality of tubes are inserted in and fixed to the bottom portion of the tank that is made of aluminum material, has the tank that is formed like the vessel to open toward the tubes. The tube plate is fixed to the opening peripheral portion of the tank, in the state where the tube plate and the opening peripheral portion are overlapped with each other, to form the bottom portion of the tank, and W1≧W2×1.5, where W1 is the plate thickness of the tank and W2 is the plate thickness of the tube plate. Therefore, each tube can be allowed to thermally expand and contract in a longitudinal direction thereof, and necessary rigidity of the tank can be ensured.

Problems solved by technology

The conventional inventions, however, have a problem in that they cannot improve coolability of the heat exchangers, because the tubes of the heat exchangers are limited to thin ones for the reason that the tanks thereof could have been deformed to expand outwardly due to thermal shock generated when each tube thereof thermally expands and contracts in a longitudinal direction thereof.

Method used

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first embodiment

[0038]Hereinafter, a first embodiment according to the present invention will be described.

[0039]Incidentally, the first embodiment in a case where a heat exchanger is applied to a radiator will be described.

[0040]FIG. 1 is a rear view showing a tank structure of a heat exchanger of the first embodiment according to the present invention, FIG. 2 is a cross sectional view taken along a line S2-S2 in FIG. 1, and FIG. 3 is a perspective cross sectional view of the same.

[0041]First, an entire construction of the first embodiment will be described.

[0042]As shown in FIG. 1, a heat exchanger 1 of the first embodiment includes a core part 2, and a pair of tanks 3 and 4 that are arranged above and below the core part 2, respectively.

[0043]The core part 2 is composed of a pair of tube plates 5 and 6, a plurality of tubes 8 and a plurality of corrugated fins 9, where the tube plates 5 and 6 are formed like a tray to each open in a direction opposite to a tube 8 side, the tubes 8 have both end ...

second embodiment

[0072]Hereinafter, a second embodiment according to the prevent invention will be described.

[0073]In the second embodiment, parts and portions similar to those of the first embodiment are indicated by the same reference numbers, and their explanation will be omitted, while only their different parts will be described.

[0074]FIG. 4 is a cross sectional view illustrating a tank structure of a heat exchanger of the second embodiment.

[0075]As shown in FIG. 4, in the second embodiment, a tube plate 20 that is formed like a tray to open toward a tube 8 side is employed instead of the tube plate 5(6) that is formed like the first embodiment. In addition, the tube plate 20 is press-fitted in an opening peripheral portion 23 of a tank 3(4), and they are joined with each other by brazing in a state where they are overlapped with each other. These constructions are different from the first embodiment.

[0076]Specifically, an opening peripheral portion 21 and a part 22 of seat surfaces, for the tu...

third embodiment

[0079]Herein after, a third embodiment according to the present invention will be described.

[0080]In the third embodiment, parts and portions similar to those of the second embodiment are indicated by the same reference numbers, and their explanation will be omitted, while only their different parts will be described.

[0081]FIG. 5 is a cross sectional view illustrating a tank structure of a heat exchanger of the third embodiment.

[0082]As shown in FIG. 5, in the third embodiment, the beads 12a and 12b, which are explained in the first embodiment, are removed, and it employs a tank 50, which is shaped like a vessel to open toward tubes 8. In addition, a tube plate 20 and a skirt-like shaped portion 31 are fixed with each other by brazing in a state where the tube plate 20 is press-fitted in an inner side of the skirt-like shaped portion 31, where the tube plate 20 is constructed as explained in the second embodiment, and the skirt-like shaped portion 31 has a cross section formed like ...

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Abstract

In a tank structure of a heat exchanger 1 where end portions of a plurality of tubes 8 are inserted in and fixed to a tube plate 5, 6 of a tank 3, 4 that is made of aluminum material, a bead 12a is provided at a position of a tube 8 side heading from a half position of a height H of a side wall portions 11a and 11b of the tank 3, 4 to extend in a direction perpendicular to a longitudinal direction of the tubes 8.

Description

TECHNICAL FIELD[0001]The present invention relates to a tank structure of a heat exchanger such as a radiator that is adapted for a motor vehicle.BACKGROUND OF THE INVENTION[0002]Japanese Patent Applications Laid-Open Publication No. 2005-299989 and No. 2005-326100 disclose a technology of conventional tank structures of heat exchangers in which both end portions of a plurality of tubes are inserted into and fixed to a bottom portion of a tank that is made of aluminum material.DISCLOSURE OF THE INVENTIONProblem(s) to be Solved by the Invention[0003]The conventional inventions, however, have a problem in that they cannot improve coolability of the heat exchangers, because the tubes of the heat exchangers are limited to thin ones for the reason that the tanks thereof could have been deformed to expand outwardly due to thermal shock generated when each tube thereof thermally expands and contracts in a longitudinal direction thereof.[0004]The present invention is made to solve the above...

Claims

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Application Information

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IPC IPC(8): F28F9/02
CPCF28D2021/0094F28F2265/26F28F2225/08F28F9/0224
Inventor IWASAKI, MITSURU
Owner CALSONIC KANSEI CORP