Out-of-step control method and device for air door of curing barn

Abstract

An out-of-step control method for the air door of a curing barn comprises the steps that whether an air door meets reset conditions or not is judged; if the air door meets the reset condition, whether the air door working current is normal working current or not is judged; if the working current of the air door is the normal working current, the air door is controlled to reset. Whether the air door is reset or not is determined by judging whether the air door meets the reset condition that the air door is opened and closed for more than 200 times or the accumulated operation time exceeds 3 h, and after the air door meets the reset condition, the air door is reset once, so that the problem of out-of-step of the air door after multiple times of opening and closing or continuous long-time operation is solved; the out-of-step phenomenon of the air door after the air door is opened and closed for more than 200 times or the accumulative operation time exceeds 3 hours is obtained through multiple experimental studies, the air door is reset according to the reset condition of the air door, the influence of out-of-step of the air door on the temperature and humidity of the curing barn can be effectively and timely eliminated, and the judgment method is simple and reliable.

Description

technical field [0001] The invention relates to the field of baking equipment, in particular to a method for controlling out-of-step prevention of a damper in a baking room and a control device thereof. Background technique [0002] The damper is the valve to adjust the air in and out of the barn. Out of step of the damper means that the actual angle of the damper is inconsistent with the control angle. Tobacco leaves, peppers, medicinal materials and other crops need to be roasted and other primary processing before they can be sold in the market. The crops that need to be roasted are placed in the barn, and the quality requirements and appearance of the crops are achieved according to the set temperature and humidity. characteristic. During the baking process, the temperature and humidity of the baking room need to be adjusted by adjusting the opening of the damper. [0003] At present, most of the dampers used in the barn are non-feedback dampers, such as figure 1 As s...

AI Technical Summary

Problems solved by technology

There is no feedback on whether the specific position of the damper switch is accurate or whether the damper is out of step. Therefore, after a certain number of times, there is a step out problem, and the accurate control of the damper angle cannot be realized, resulting in inaccurate control of the temperature and humidity of the barn, which affects the drying of crops. roast quality

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