Kinds of solar water heater and the heat storage unit with a safety device mounting method

The present invention relates to a kind of solar water heater with a safety device mounting method, and the heat storage unit, comprising a heat storage element (1) and the relief valve (4), the heat storage element (1) that has the phase change thermal storage material ( 7), and a heat storage element (1) is provided with an end relief holes (9), said pressure relief valve (4) is fixed at (1) through the end of the heat storage element and relief hole (9) and the heat storage element ( 1) internal Unicom. The inner side of the heat storage unit disposed in horizontal or inclined solar collectors (5) in the pressure relief valve (4) up and relief hole (9) in the opening of the liquid level of the heat storage material (7) above. When compared to the prior art, the present invention by the installation of pressure relief valves and the method of using a simple installation, so as to release water vapor and a small amount of gas to limit the internal pressure of the heat storage unit, to ensure safe operation, the pressure relief valve opens, and loss of the heat storage medium is small, resulting in substantially no decrease heat element storage capacity.