Anti-scaling device of heat collecting pipe for solar water heater

The utility model relates to an anti-scaling device of a heat collecting pipe for a solar water heater. The device comprises a pipe body of the heat collecting pipe. The pipe body is inserted into a water storage tank of the solar water heater and is connected with a wall of the water storage tank in a sealing way. The pipe body is internally provided with a T-shaped siphon which is divided into a siphoning end and a water outlet end. The siphoning end extends into the bottom end of the pipe body while the water outlet end extends into the water storage tank and is held by the port of heat collecting pipe. As the siphon is arranged in the heat collecting pipe the water inside the heating pipe can not flow into the siphon under the action of siphon and can flow into the water storage tank through the siphon, moreover, the scale in the water storage tank can be removed more easily as compared with the heat collecting pipe, thus, the heat collecting pipe can achieve anti-scaling purpose.