BRAZING SHEET FOR HEAT EXCHANGER AND HEAT EXCHANGER FOR AIR CONDITIONER

Japanese Patent JP2023159130

A

To provide a brazing sheet provided with a sacrificial anode material layer that is used for a heat exchanger for an air conditioner and can excellently combine corrosion resistance and pressure resistance.SOLUTION: A brazing sheet 10 is used in a heat exchanger for an air conditioner, including a joining structure in which an angle of inclination of an inclined part with respect to a joining part is 40 degrees or less, and a temperature at the time of joining is set within the range of 610 to 620°C. It includes a core material 11 made of an aluminum (Al) alloy, a brazing material layer 12 made of an Al alloy containing Si, and a sacrificial anode material layer 13 made of an Al alloy containing Zn and Si. A thickness of the sacrificial anode material layer 13 is within a range of 15 to 25 μm, and when the temperature at the time of bonding is T, an Si content XSi in the sacrificial anode material is less than or equal to a value expressed by the formula (1): T = 660-8×exp(0.3XSi) and more than or equal to a value expressed by the formula (2):T=580+55×exp(-0.5(XSi-1.7).SELECTED DRAWING: Figure 1

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NAKAJIMA TAKAHITO
HIROTA MASANORI
YAMAMOTO KENSHO

JP2023125469A

October 31, 2023

August 01, 2023

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PANASONIC IP MAN CORP

C22C21/00; B23K1/00; B23K1/19; B23K35/22; B23K35/28; F28D9/02; F28F19/02; F28F19/06; F28F21/08

Ariko Patent Office

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