一般热水器的采光面都比较高,清扫比较困难,我们在热水器的上沿处安装了一根洒水管,用自来水冲洗灰尘,既方便又干净,效果很好(见图)。洒水管的内径为15—20毫米,管壁上小孔直径为3毫米,间距2—3毫米,但冲洗时要注意水与玻璃的温差不能太大,以免玻璃破碎,同时,冲洗后的废水应 The general lighting of the water heaters are relatively high, more difficult to clean, we have installed in the water heater at the top of a sprinkler, rinse the water with water, both easy and clean, the effect is very good (see photo). Sprinkler pipe diameter of 15-20 mm, pipe wall hole diameter of 3 mm, spacing 2-3 mm, but flushing should pay attention to the temperature difference between water and glass can not be too large, so as not to glass broken, at the same time, washing the waste water should