Water pressure dedusting type solar water heater

A water pressure dedusting type solar water heater comprises an evacuated collector tube, a water tank and a support and is characterized by further comprising a cleaning brush arranged on the evacuated collector tube in a sleeving mode, and a water pressure driving device for driving the cleaning brush to slide along the evacuated collector tube in a reciprocating mode is arranged between the bottom of the support and the water tank. And the evacuated collector tubes are cleaned under the dual action of water flow and friction force, so that the solar water heater is prevented from reducing the heat collection efficiency due to dust. 一种水压除尘式太阳能热水器，包括真空集热管、水箱和支架，其特征在于，还包括套设于所述真空集热管上的清洗刷，所述支架的底部与所述水箱之间设有驱动所述清洗刷沿着所述真空集热管往复滑动的水压驱动装置。在水流与摩擦力的双重作用下对真空集热管进行清洗，使太阳能热水器免于因灰尘导致的热量收集效率降低。