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Heat Accumulators

Heat-exchanger-core-having-fin-members-serving-as-sacrificial-anodes

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Heat exchanger core having fin members serving as sacrificial anodes

Details

Inventors: Terai, Shiro; Tanabe, Zenichi; Fukui, Toshiyasu;
Assignee: Sumitomo Light Metal Industries, Ltd. (Tokyo, JP); Nippondenso Co., Ltd. (Kariya, JP)
Primary Examiner: Richter; Sheldon
Assistant Examiner:
Attorney, Agent or Firm: Blanchard, Flynn, Thiel, Boutell & Tanis

The heat exchanger core comprises a fluid passage member, within which a fluid flows and outside of which another fluid flows and fin members formed on the fluid passage member for promoting heat exchange between the two fluids. The fluid passage member and the fin members are made of different kinds of aluminum alloys. The fin members serve as sacrificial anodes as well for protecting the heat exchanger core from corrosion.

DETAILED DESCRIPTION It is therefore an object of the present invention to provide a corrosion-resistant heat exchanger core.
According to the present invention, fin members which are attached to the outer surface of the fluid passage member for increasing the heat exchange efficiency also serve as sacrificial anodes by an appropriate combination of the materials used in the heat exchanger core and the fin members, so that the heat exchanger core is protected from corrosion, while the corrosion speed of the fin members is minimized.
The heat exchanger core according to the present invention can find wide application since corrosion of the fluid passage member is prevented by the fin members.
Thus, it can be employed not only in air-cooled heat exchangers, but also in liquid-liquid heat exchangers.

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