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今年上半年,从检修十多个医疗单位的B超来看,除尘已成了当务之急。无论是维修人员还是使用人员在卸开B超外壳时,都因内部积尘太多而吃惊。因此,特提醒用户注意,为保证B超的正常运行,必须立即除尘。在检修B超时,发现大部分为图像模糊、不稳,少数是电源部分损坏;从仪器内部看,灰尘厚的竟达5毫米左右,进风口和散热孔几乎被积尘堵死,线路板蒙上一层厚厚的灰尘,无形中增大了网络间的分布电阻和电容,严重地影响着图像的清晰度和稳定性。在清除
In the first half of this year, from the B-overhaul over a dozen medical units, dust removal has become a top priority. Both the maintenance staff and the user were surprised by too much dust inside when unloading the B-shell. Therefore, special reminder users, in order to ensure the normal operation of the B-must dust immediately. In the overhaul of B, it was found that most of the images were blurred and unsteady. A few were partially damaged by the power supply. From the inside of the instrument, the dust was as thick as 5 mm, the air inlet and the cooling holes were almost blocked by dust, A thick layer of dust virtually increases the distribution of resistance and capacitance across the network, severely affecting the sharpness and stability of the image. Cleared