Method and device for controlling temperature uniformity of heating roller
A technology of a control device and a control method, which is applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve the problems such as the failure of the control accuracy of the temperature uniformity of the heating roller to achieve uniform temperature rise and fall, and control temperature uniformity. degree of effect
Inactive Publication Date: 2011-01-05
株洲科力通用设备有限公司
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Abstract
The invention discloses a method and a device for controlling the temperature uniformity of a heating roller. In the invention, the heating roller is heated by an electromagnetic heating process, the heating roller is a hollow roller of which the middle is hollow, an electromagnetic heating device is arranged in the hollow part of the heating roller; and the electromagnetic heating device comprises more than three electromagnetic heating coils, and the heat productivities of the electromagnetic heating coils are controlled respectively to control the temperature uniformity of the heating roller. Controlling the temperature uniformity of the heating roller by controlling the heat productivities of the electromagnetic heating coils respectively is arranging the electromagnetic heating coils in the hollow part of the heating roller and along the axial direction of the heating roller, wherein the heating powers of the electromagnetic heating coils are different according to the radiation condition of the heating roller, namely electromagnetic heating coils with high heating powers are used for the parts, on which radiation is quick, of the heating roller, while electromagnetic heating coils with low heating powers for the parts, on which radiation is low, of the heating roller, so as to ensure the radiation rate and heat absorption rate of the heating roller are the same; and thus, the temperature of the entire heating roller raises and falls uniformly.
Application Domain
Temperatue control
Technology Topic
Absorption rateHollow core +4
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