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Flat tube making platelike body, flat tube, heat exchanger and process for fabricating heat exchanger

A technology for flat tubes and plate-shaped objects, which is applied to the manufacture of flat tubes and plate-shaped objects to achieve the effects of improving pressure resistance, brazing joint strength, and improving pressure resistance

Inactive Publication Date: 2007-03-07
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in order to provide a compact condenser, it seems possible, for example, to make the width of the refrigerant tube 16mm, the height 1.1mm and the wall thickness of the reinforcing wall forming part to be about 0.5mm at most, but in this case the above-mentioned problems arise

Method used

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  • Flat tube making platelike body, flat tube, heat exchanger and process for fabricating heat exchanger
  • Flat tube making platelike body, flat tube, heat exchanger and process for fabricating heat exchanger
  • Flat tube making platelike body, flat tube, heat exchanger and process for fabricating heat exchanger

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Embodiment Construction

[0066] Embodiments of the present invention will be described below with reference to the drawings. In the following description, the upper part, the lower part, the left-hand side and the right-hand side of FIG. 1 will be referred to as "upper", "lower", "left" and "right", respectively. In the drawings, the same parts will be indicated by the same reference numerals.

[0067] Fig. 1 shows a flat tube, Fig. 2 is a partial view of the flat tube, Fig. 3 shows steps of a method of manufacturing the flat tube using a plate-shaped body, and Fig. 4 is a partial view of Fig. 3(c).

[0068] Referring to FIG. 1, a flat tube 1 is made of aluminum and includes upper and lower flat walls 2, 3 (a pair of flat walls) opposed to each other so that the upper and lower flat walls 2, 3 are interconnected at their left and right opposite sides. The left and right opposite side walls 4, 5, and a plurality of reinforcing walls 6 interconnecting the upper and lower flat walls 2, 3, the reinforcin...

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Abstract

A flat tube making platelike body 15 is in the form of a single metal plate in its entirety and comprises two flat wall forming portions 17, 18 having the same width, a connecting portion 16 for interconnecting these portions 17, 18, side wall forming portions 9, 10 projecting from the respective flat wall forming portions 17, 18 and each formed integrally with one side edge of the flat wall forming portion opposite to the connecting portion 16, and first and second reinforcing wall forming portions 11, 12 integrally formed on each of the flat wall forming portions 9, 10. The first reinforcing wall forming portions 11 are butted against the respective second reinforcing wall forming portions 12 in pairs when the metal plate is folded into a hairpin form at the connecting portion 16. The first reinforcing wall forming portions 11 are given a smaller thickness than the second reinforcing wall forming portions 12 on the other flat wall forming portion 18 butted against the respective portions 11. The platelike body 15 gives an enhanced brazing joint strength to the reinforcing wall forming portions in fabricating a flat tube, and improved pressure resistance to the flat tube to be fabricated.

Description

[0001] Cross References to Related Applications [0002] This application is an application filed under 35 U.S.C. § 111(a) and a provisional filed under 35 U.S.C. § 111(b) on April 7, 2004 under 35 U.S.C. § 119(e)(1) Filing Date Benefit of Application No. 60 / 559,950. technical field [0003] The invention relates to a plate-like body for the manufacture of flat tubes used as heat exchange tubes for heat exchangers such as refrigerant tubes in condensers or evaporators of automotive air-conditioning units, for Oil pipes for automobile oil coolers, water pipes for automobile radiators and heat transfer medium pipes for (heater) radiator cores, the invention also relates to flat pipes, heat exchangers comprising such flat pipes and Method for making heat exchangers. [0004] The term "aluminum" as used herein and in the appended claims includes aluminum alloys in addition to pure aluminum. Background technique [0005] In recent years, the following condenser, in which, for ...

Claims

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Application Information

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IPC IPC(8): F28F1/02B21D53/04
Inventor 贝村哲龟田诚田中大史田村乔
Owner SHOWA DENKO KK
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