Collecting and distributing heat exchange non-pressure circulation heat exchange system

The utility model relates to a collecting and distributing heat exchange non-pressure circulation heat exchange system. The solar water heater comprises a solar heat collector, a liquid supplementingdevice, a heat medium storage tank and a hot water using unit which are sequentially arranged in the medium circulation direction. A circulating pump is arranged between the hot water unit and the solar heat collector; the solar heat collector comprises a plurality of heat pipe heat collectors which are sequentially connected in series. The liquid supplementing device comprises a liquid supplementing device box body and a breather valve arranged at the top of the liquid supplementing device box body; wherein a medium breather valve is arranged on the heat medium storage tank, the hot water unit comprises a plurality of heat exchange water tanks which are arranged in parallel, heat exchange pipes which are communicated with the heat medium storage tank and the circulating pump are arrangedin the heat exchange water