| 摘要 |
PURPOSE:To obtain a smoke house capable of producing ham having hardly any dispersion of quality. CONSTITUTION:The target value of the temperature and moisture of a chamber 2 is previously set as a control pattern according to an amount and kind, etc., of semi-fabricated product of ham to be treated and according to process and elapsed time. The controller selects prescribed control pattern according to a case to be treated and controls valves, motors, etc., of the above target along this control pattern to carry out the control of temperature and moisture. PID control is carried out based on deviation of detection temperature and moisture obtained based on a wet-bulb temperature and a dry-bulb temperature in a chamber 2 from target temperature and moisture at the point of time in control pattern. In a drying process, steam amount fed to a heater is mainly controlled to carry out temperature control and opening of adjust damper of outside air introducing duct and number of rotations of a discharge fan 15 are controlled to carry out moisture control. |
