| 摘要 |
PURPOSE:To accurately and certainly control the heating temperature of a heating body in a prescribed temperature range by controlling the switching timing of the energizing and non-emergizing operations of the heating body in corresponding to the temperature variation range of a body to be heated. CONSTITUTION:Even when the energy quantity absorbed by or radiated from a body to be heated 4 having a prescribed heat capacity is fixed, its heat radiating or absorbing time and, moreover, the temperature rising width (lowering) per prescribed time vary depending upon the ambient temperature, air flow flowing the surrounding area of the body 4, etc. Therefore, the stopping or starting timing of energizing of a heating means 1 is controlled in corresponding to the heat radiating or absorbing time and temperature rising (lowering) width per prescribed time. Accordingly, the temperature of the body to be heated can be controlled accurately and certainly with a prescribed temperature range while absorbing the variation of the environmental conditions. |
