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微波炉

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微波炉是一种我们常见的家用电器,现在可以说每个家庭基本都有微波炉,但是我们对微波炉的了解又有多少?我们知道微波炉的原理么,微波炉的用途有哪些呢?本站就为大家收集并整理了和微波炉相关的问题,使大家能够明明白白的使用微波炉。

光波炉的功率与效率

现在光波炉的输出功率多为七八百瓦,不少消费者可能觉得这么高的功率也很费电,实际上这是对光波炉的一种误解。

光波炉和一般烹饪器具不同,除了方便快捷, 健康环保外,它还有特别的“节能”手段。

光波炉:光波微波炉

光波炉简介:

光波炉是最新推出的家用烹调用炉,号称微波炉的升级版的光波炉与微波炉的原理不同。

微波炉是利用磁控管加热的,但光波微波组合炉是在微波炉炉腔内增设了一个光波发射源,能巧妙地利用光波和微波综合对食物进行加热。

微波如何加热水

水属于极性分子,极性分子在没有外加电场时不显示极性。如果将这种介质放在外加电场中,每个极性分子会沿着电场力的方向形成有序排列,并在电介质表面会感应出相反的电荷,这一过程称为极化。外加电场越强,极化作用也越强。当外加电场改变方向时,极性分子也随之以相反的方向形成有序排列。若外加的是交变电场和磁场,极性分子将被反复交变磁化,交变电场的频率越高,极性分子反复转向的极化也就越快。此时,水分子热运动的速度增加。从热力学角度上说,物体的温度就是分子动能大小的表现。水分子运动速度增加,动能也随之增大,也就是说食物的温度也随之升高,微波就通过传递振动的方式将水加热的。自此电磁能便转换成为热能。

微波炉鸡蛋羹

微波炉做鸡蛋羹的准备:
  • 原料:鸡蛋
  • 调料:醋、酱油、香油、胡椒、盐、鸡精
制作微波炉鸡蛋羹的步骤:

平板微波炉 -- 真假平板实物对比

真平板微波炉是磁控管发射的微波被管道导流,从底部流出,经过底部嵌支的电机搅拌器搅拌出波。
真平板微波炉底部搅波器图片

假平板微波炉的平板底部的金属底上有几个铁片凸槽,整体工作原理就是通过不同位置、大小、方向的凹槽将微波反射到各个方向。
假平板微波炉底部反射面图片

平板微波炉--真假平板

现在市面上有两种平板微波炉,但是有真假平板只说,那到底什么是真平板,什么是假平板呢?

真平板微波炉 -- 通过搅波器发射微波
  • 这种平板微波炉就是通过搅波器改变微波的发射方向,使各个方向的产生等量的微波,再通过发射器使微波按照指定的方向发射微波。这种微波炉的核心就是搅波器。具体可以参考前面的博文:平板微波炉 http://weibolu.blogspot.com/2009/03/blog-post_2160.html

平板式微波炉的优缺点

平板式微波炉优点:
  • 没有底部转盘,容易清洗
  • 可以使用带手柄的容器
  • 加热后容易取出,因为容器的位置不会变化
平板式微波炉的缺点:

套用一句古话,“成也萧何,败也萧何”,旋转式微波炉存在旋转底盘的目的就是为了均匀加热,平板式微波炉将旋转底盘拿掉,那么均匀加热就成了问题。

平板式微波炉的缺点主要有下面两点:

平板式微波炉

传统的微波炉有个旋转底盘(见微波炉原理图),微波炉加热的时候,食物随着底盘一块转动,从而达到均匀加热的目的,但是旋转式微波炉也带来了很多不便,如不能将带手柄的容器放入微波炉加热等等。

平板式微波炉的结构和原理:

微波炉原理图

可以看到微波炉的几大部分:
变压器,二极管,电容器,磁控管,天线,导波管,冷却风机。

微波炉原来图

微波炉加热时爆响(呯嗙,噼啪作响)

现象:
微波炉加热肥肉等油脂含量高的食物时,出现爆响(或者说呯嗙,噼啪作响),和水掉进油锅的声音类似。

原因: