| 摘要 |
A water-heater casing has a barrel, two covers and a chamber. The barrel has a cylindrical body and at least one hump and two open ends. The at least one hump is formed from the cylindrical body and has at least one tangential side. The covers are respectively mounted on the open ends of the barrel. The chamber is formed between the cylindrical body, hump and covers and corresponds to a water tank and components. The water-heater casing saves space and is attractive.
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