Coating composition, coating film, and micro channel type heat exchanger using the same
AssigneeLG Electronics Inc.
InventorsDonghyun Seo, Younghwan Ko, Yeol Lee, Minsoo Kim, Hyeok-jin Yoon
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Abstract
A coating composition, a coating film, and a micro-channel type heat exchanger using the same are disclosed herein. The coating composition contains a hydrophilic resin at 10 to 40% by weight; a metal compound at 1 to 10% by weight; an amide-based crosslinking agent at 0.5 to 5% by weight; a phosphoric acid-based compound at 1 to 5% by weight; a preservative at 0.1 to 3% by weight; and water as a remainder. Thus, the coating composition provides a coating film that has both long-term corrosion resistance and long-term hydrophilicity.
Claims14
A micro-channel type heat exchanger, comprising:
- a plurality of tubes having a plurality of flow paths defined therein;
- a plurality of fins, each of the plurality of fins connecting adjacent ones of the tubes to each other to conduct heat therebetween;
- and
- a coating film formed on at least one of the tubes or the fins,
- wherein the coating film is made of a coating composition including:
- a hydrophilic resin in an amount of 10 to 40% by weight;
- a metal compound in an amount of 1 to 10% by weight:
- an amide-based crosslinking agent in an amount of 0.5 to 5% by weight;
- a phosphoric acid-based compound in an amount of 1 to 5% by weight;
- a preservative in an amount of 0.1 to 3% by weight;
- and
- water.
An indoor or outdoor unit of an air conditioner comprising:
- a cabinet assembly having an inlet defined therein through which indoor air is sucked;
- and
- a heat exchanger disposed in the cabinet assembly and configured to exchange heat between the sucked indoor air and refrigerant,
- wherein the heat exchanger includes a micro-channel type heat exchanger,
- wherein a coating film is formed on a surface of at least one of a flat tube or a fin of the heat exchanger,
- wherein the coating film is made of a coating composition including:
- a hydrophilic resin in an amount of 10 to 40% by weight;
- a metal compound in an amount of 1 to 10% by weight;
- an amide-based crosslinking agent in an amount of 0.5 to 5% by weight;
- a phosphoric acid-based compound in an amount of 1 to 5% by weight;
- a preservative in an amount of 0.1 to 3% by weight;
- and
- water.
Dependencies are inferred from the claim text.