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一、概述随着技术的不断进步,高频感应加热设备在工业中应用日盆增多。高频设备在工作时,向四周空间放射电场和电磁波。由于高频磁场场力的不断变化,使人体的生物电场受到干扰,造成中枢神经障碍。操作者有头昏、失眠、记忆力减退等现象。要消除上述现象,保护工人身体健康,就要将高频场源用金属罩加以屏蔽及接地,使电磁波和电场不向四周辐射。当金属罩把高频场源屏蔽起来后,高频电磁波透过空气射到屏蔽罩内表面,由于
First, an overview With the continuous improvement of technology, high-frequency induction heating equipment in the industrial application of Japanese increased. High-frequency equipment at work, to the surrounding space to radiate electric fields and electromagnetic waves. Due to the continuous changes of the high-frequency magnetic field force, the biological electric field of the human body is disturbed, resulting in central nervous disorders. Operators have dizziness, insomnia, memory loss and so on. To eliminate the above phenomena and protect the health of workers, it is necessary to shield and ground the high-frequency field source with a metal cover so that electromagnetic waves and electric fields will not radiate to the surroundings. When the metal cover to shield the high-frequency field source, the high-frequency electromagnetic waves through the air shines on the inner surface of the shield, due to