Building energy -conserving heat transfer device that is of use

The utility model discloses a building energy -conserving heat transfer device that is of use, the on -line screen storage device comprises a base, aspiration pump and water pump, be fixed with preheating cabinet and hot water bucket on the base, it is fixed with the arc frid to be fixed with through the support on the preheating cabinet between a plurality of thermal -collecting tubes of arranging side by side and two the adjacent thermal -collecting tubes, the inside multiunit microchannel heat exchanger that is fixed with of preheating cabinet, be fixed with multiunit and the inside intakepipe that communicates of microchannel heat exchanger on the heat exchanger of microchannel, preheating cabinet inside is fixed with moisturizing pipe parallel with the thermal -collecting tube and the one -to -one, moisturizing pipe lower extreme passes through the connecting pipe and is connected with the thermal -collecting tube that corresponds. This kind of building energy -conserving heat transfer device that is of