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长久吹长时间对着电风扇吹,人体温度会随着汗液的大量蒸发而下降,容易引起伤风、感冒、腹痛、腹泻等疾病。一般以一次吹风半小时到1小时为宜。高速吹当气温超过30℃时,空气温度已接近于人的正常体温,此时人体的热量主要应靠汗液蒸发散热。如果电扇风吹得过大,皮肤表面温度下降,毛孔闭塞,身体内部汗液散发不出来,还是会感到炎热,同时还会出现疲乏无力、腰酸背痛,这就是“憋汗”。因此,不宜用电风扇高档高速吹风,应当调到中速或低速。吹微风为好。吹近风电风扇吹风不宜放在离身体很近的地方,如果近处吹强风,且只吹身体的一面,使受风面的皮肤汗液蒸发快,温度显著降低;而吹不着风
Long blow for a long time blowing the fan, the body temperature will sweat with a large amount of evaporation and decline, easily lead to colds, flu, abdominal pain, diarrhea and other diseases. Generally a half an hour to 1 hour hair appropriate. High-speed blowing When the temperature exceeds 30 ℃, the air temperature is close to the normal human body temperature, then the body’s heat mainly sweat evaporation heat. If the electric fan blows too much, the temperature of the skin surface will drop, the pores will clog up and the sweat will not be dissipated inside the body, or the body will feel hot and tired. Therefore, high-end fans should not use high-speed hair, should be transferred to medium-speed or low speed. Breeze as well. Wind blower near the wind blower should not be placed close to the body where the place, if strong wind blowing near, and only blow the body side, so that the wind surface of the skin sweat evaporation speed, significantly lower the temperature;