Phase-change heat exchange device

The utility model relates to a phase-change heat exchange device which comprises a heat exchanger shell, a plurality of phase-change heat storage units are arranged in the heat exchanger shell, the heat exchanger shell is provided with a first medium inlet and a first medium outlet, and the phase-change heat storage units are arranged in a replaceable mode. The phase change heat storage unit is positioned on the medium flow channel between the first medium inlet and the first medium outlet; the phase change heat storage unit can displace locally, a clamping structure is not arranged on the periphery of the phase change heat storage unit, free deformation can be achieved, large displacement cannot occur in the heat expansion and cold contraction process, small-range displacement can be achieved, the expansion and contraction process cannot be limited, and therefore the purpose that a heat exchange pipeline is not used is achieved. By arranging the replaceable and locally displaceable phase-change heat storage