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    • 2. 发明申请
    • HEATING APPARATUS
    • 加热装置
    • WO1994004876A1
    • 1994-03-03
    • PCT/GB1993001728
    • 1993-08-13
    • HART, John, Graham
    • F24H01/14
    • F24H1/142
    • A method of heating a liquid which comprises providing a mandrel (12) within a heating element (14) having at least one surface, and passing the liquid down the mandrel in the form of a thin film (22) in such a manner that it does not contact the heating surface (14). This may be carried out in apparatus which comprises a heating element (14) within which is located a mandrel (12), not in contact with the element, a source of liquid (18), and means (20) for allowing the liquid from the source to flow over the mandrel (12) in the form of a thin film (22). The mandrel (12) will normally be maintained in a vertical orientation and the source of liquid (18) may be at the top thereof. The liquid is allowed to run as a film (22) down the surface of the mandrel (12). The mandrel (12) is surrounded by the hot surface of the heating element (14) and heat passes principally by radiant heat across the gap (16) between the hot surface of the heating element (14) to the liquid passing down the mandrel (12). Thus there is no direct contact between the liquid to be heated and any heated surface of the heating element (14). The mandrel (12) itself will normally not be heated and, indeed, it may be made from materials having good corrosion and release properties but a thermal conductivity so poor that they would not normally be used in heat exchanger manufacture. It need not be made from metal, and may, for example, be made from materials such as ceramics or glass, optionally with release coatings of, for instance, PTFE.
    • 一种加热液体的方法,其包括在具有至少一个表面的加热元件(14)内提供心轴(12),并使液体以薄膜(22)的形式沿着心轴向下流动,使得它 不接触加热面(14)。 这可以在包括加热元件(14)的设备中进行,加热元件位于与元件不接触的心轴(12),液体源(18)和用于允许液体 源以薄膜(22)的形式流过心轴(12)。 心轴(12)通常将保持垂直取向,并且液体源(18)可以在其顶部。 允许液体作为薄膜(22)在心轴(12)的表面下方运行。 心轴(12)被加热元件(14)的热表面包围,并且热量主要通过辐射热穿过加热元件(14)的热表面之间的间隙(16)传递到通过心轴的液体 12)。 因此,待加热的液体与加热元件(14)的任何加热的表面之间没有直接接触。 心轴(12)本身通常不会被加热,实际上它可以由具有良好腐蚀和释放特性的材料制成,但热导率如此差,使得它们通常不会用于热交换器制造。 它不需要由金属制成,并且可以例如由例如陶瓷或玻璃的材料制成,任选地具有例如PTFE的剥离涂层。