Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same

A technology for heat exchangers and brazing plates, applied in heat exchange equipment, manufacturing tools, applications, etc., can solve problems such as lack of understanding, and achieve the effects of preventing the reduction of commodity value, improving production efficiency, and preventing dumping and deformation.

Inactive Publication Date: 2012-07-18
FURUKAWA SKY ALUMINUM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] However, in conventional brazing at a temperature of about 600°C, or when thicker fin members of about 100 μm or more are used, such a phenomenon hardly occurs, so it has not been recognized at all until now.

Method used

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  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same
  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same
  • Thin brazing sheet fin component for high temperature brazing and method for manufacturing heat exchanger using the same

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Embodiment Construction

[0039] In the present invention, in order to contribute to the weight reduction of the heat exchanger, a brazed plate-fin member having a plate thickness of 40 to 85 μm is targeted. In the case where the plate thickness is smaller than this range, it is difficult to manufacture a complete brazing plate, and in the case where the plate thickness is larger than this range, it is beneficial to prevent the deformation of the fins during brazing without the need for thoughtful and meticulous work as described in the present invention. Countermeasures, however, do not contribute to thinning and even weight reduction of the heat exchanger.

[0040] The thin brazing sheet fin member of the present invention is characterized in that the performance against deformation of the end portions of the corrugated fins is good in high-temperature brazing with a maximum reaching temperature in the range of over 610°C and below 625°C. In order to achieve this feature, the limitation of the materi...

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Abstract

The present invention provides a thin brazing sheet fin component for high temperature brazing and a method for manufacturing a heat exchanger using the same. According to the invention, the thin brazing sheet fin component with a thickness less than 85 mu m is used for performing corrugating and assembling the core of the heat exchanger. Even the brazing is performed at a high temperature higherthan 610 DEG C, the tilting deformation at the end of the fin is not caused. The brazing sheet fin component is composed of solder which is formed by jointing Al-Si series alloy on two surfaces of core material formed by Al-Mn series alloy, wherein the Si content (Sic) of the core material is limited in a range of 0.05 to 0.28; the Si content (Sif) of the solder is in a range of 6.0-8.8mass%; theaverage coating rate (CR) of a single surface of the solder is in a range of 6.5-12.0%; and furthermore these parameters are limited to a range which satisfies the following formula: X=CR*(Sif-Sic+0.6)+50*Sic<=95.

Description

technical field [0001] The present invention relates to a brazed plate-fin member for an aluminum alloy heat exchanger and a method of manufacturing a heat exchanger using the same. More specifically, as a corrugated fin member, it relates to a fin member suitable for brazing at a high temperature of over 610° C. and 625° C. or lower, and to heat exchange using the same method of manufacture. Background technique [0002] The aluminum alloy heat exchanger, since its raw material aluminum alloy is light and has good thermal conductivity, is also suitable for joining by furnace brazing using an aluminum brazing sheet pre-coated with solder (ろうmaterial). For mass production, it has been widely used, especially widely used in automotive radiators, air conditioner evaporators, capacitors, etc. [0003] In recent years, there has been a trend toward further weight reduction of heat exchangers for automobiles, and for this reason, there is an urgent need to reduce the thickness o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28F3/00F28F21/08C22C21/00B23P15/26
CPCB23K1/0012B23K1/008B23K35/286B23K2101/14B23K2103/10C22C21/00F28F21/084
Inventor 铃木义和鹿野浩大原伸昭
Owner FURUKAWA SKY ALUMINUM CORP
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