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    • 28. 发明专利
    • ELECTRIC WATER HEATER AND MANUFACTURE OF HEATED WATER CONTAINER
    • JPH0638878A
    • 1994-02-15
    • JP19508992
    • 1992-07-22
    • MATSUSHITA ELECTRIC IND CO LTD
    • NOBUTO YOSHIYASUSHIBATA TSUNEOKAWANISHI HIDESATOOKABE YOSHIYUKI
    • A47J27/21
    • PURPOSE:To easily remove water scales as well as to improve durability by forming a covered layer in which a mixing ratio of a thermoplastic polyamide resin the glass transition temperature of which is equal to or more than a specified one to a polyethersulfone resin is specified, over the inner surface of a heated water container. CONSTITUTION:A closed end heated water container 2 which is made of stainless steel as a base material while being housed in an outer case 1, is made up of a bottom container 2a and a side container 2b which are integrated by welding. At least, the heating surface of the heated water container 2, for instance, a covered layer 3 formed over the inner surface of the bottom container 21 is made of mixture in which a thermoplastic polyamide resin the glass transition temperature of which is equal to or more than 150 deg.C is mixed with a transparent resin such as a polyethersulfone resin by a mixing ratio by weight of 0.1/0.9 to 0.9/0.1. In addition, an exothermic body 4 using a mica heater is integrally welded to the bottom of the bottom container 2a. By this constitution, constituent water scales which would adhere to the wall surface of the heated water container 2 can be easily cleaned by means of wiping and the like, the covered layer 3 thereby will never be deteriorated.