Multilayer foam metal tube-and-shell heat exchanger

The utility model discloses a foam metal tube-and-shell heat exchanger which adopts multilayer foam metal as an expanded heat transfer surface and aims to solve the problems of low heat transmission efficiency, large volume, high metal consumption and the like of the conventional shell-and-tube heat exchanger. By winding a plurality of layers of continuous ribbon foam metal core material outside each heat exchange pipe in a shell and filling a plurality of layers of continuous ribbon foam metal core material in each heat exchange pipe, the heat exchange performance inside and outside the pipes of the shell-and-tube heat exchanger is improved, the baffle plate of the traditional shell-and-tube heat exchanger is omitted, and the heat exchange area of the shell-and-tube heat exchanger is increased; and cold and hot fluids participating in heat transmission can flow through the foam metal passages of the foam metal core materials, so that the shell-and-tube heat exchanger achieves the effects of higher heat transmission efficiency, smaller volume and lower metal consumption under the premise of obtaining the same heat exchange effect.