Solar water heater

The utility model discloses a solar water heater. The device comprises a water tank and at least one heat collecting device, the heat collecting device comprises a heat absorbing pipe and a heat collecting metal plate; the surface of the heat collection metal plate is coated with a selective heat absorption coating. An inner container and a heating cavity used for heating the inner container are sequentially arranged in the water tank from inside to outside, two ports of the heat absorption pipe are communicated with the heating cavity, the side face of the heat absorption pipe is fixedly connected with the heat collection metal plate, and the heat absorption pipe and the heating cavity are filled with liquid heat conduction media. The solar water heater is simple in structure and capableof improving heat absorption efficiency. 本实用新型公开了一种太阳能热水器，它包括水箱和至少一个集热装置，所述集热装置包括吸热管和集热金属板，所述集热金属板表面涂有选择性吸热涂层，所述水箱内部由内向外依次设有内胆和用于给内胆加热的加热腔体，所述吸热管两端口均与加热腔体连通，所述吸热管侧面与集热金属板固定连接，所述吸热管和加热腔体内填充满液体热导介质。本实用新型结构简单，且能够提高吸热效率。