The present invention relates to a precise temperature control apparatus and method for a retort sterilizer using an automatic valve, wherein the control device (X) for controlling the on / off valve (6) for fine temperature control includes an automatic valve modeling means (10)； A temperature collecting means 20； Temperature deviation discrimination means (30)； Temperature measured value comparing means 40； Valve control means (50)； An off-line data collection step (step S1), comprising valve driving means (60) for driving the fine temperature control on / off valve (6) according to the control of the valve control means (50)； A responsive measurement step of the valve (step S2)； Automatic valve modeling step (S3 step)； Setting temperature data collection step (S4)； An actual temperature collection step (step S5)； A temperature deviation determination step (step S6)； Determination step of the temperature rise and fall (step S7)； A valve control step (step S8) of the temperature rise section； A valve control step (step S9) of the temperature drop section； A valve-off driving step (S10 step)； Maintaining the valve state (step S11)； A valve-on driving step (step S12)； Measured data storage step (step S13)； By controlling the valve by executing the work completion check step (S14), when the temperature deviation of the retort occurs excessively or minutely, the opening degree of the control valve is predicted and controlled, so that precise temperature control is possible and productivity can be improved. It is a useful invention that has a special advantage that can be used stably without a long-term failure due to the excellent economic efficiency by reducing the manufacturing cost of the device and the robustness of the temperature control device.본 발명은 자동밸브를 이용한 레토르트 살균기의 정밀 온도제어장치 및 방법에 관한 것으로, 미세온도 제어용 온오프 밸브(6)를 제어하는 제어장치(X)가 자동밸브 모델링수단(10)과； 온도 수집수단(20)과； 온도편차 판별수단(30)과； 온도 실측치 비교수단(40)과； 밸브 제어수단(50) 및； 상기 밸브 제어수단(50)의 제어에 따라 상기 미세온도 제어용 온오프 밸브(6)를 구동하는 밸브 구동수단
