点击图片查看原图
6ES7 321-1FH00-0AA0 热水器就是指通过各种物理原理，在一定时间内使冷水温度升高变成热水的一种装置。按照原理不同可分为电热水器、燃气热水器、太阳能热水器、空气能热水器、速磁生活热水器五种。
由于我国的实际情况和使用习惯，燃气热水器仍是众多消费者的*选。而燃气热水器的安全问题也是大家*关注的问题，**禁止生产销售(http://www.maoyihang.com/sell/)直排式燃气热水器。
能否及时排走有毒气体，成为燃气热水器安全性的关键。从欧美各国的发展情况来看，强制给排气式是燃气热水器发展的必然趋势。
在一定时间内使冷水温度升高变成热水的燃气热水器工作原理分析电路图。
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