Cold and heat combined supply device and taurine production line

According to the combined cooling and heating device and the taurine production line, redundant heat of the refrigerating machine can be recycled for heat supply, combined cooling and heating are achieved, and then the effects of saving energy and reducing consumption are achieved. The combined cooling and heating device comprises a refrigerating machine and a heat recovery system, the heat recovery system comprises a heat recovery device and a heat recovery pipeline, the heat recovery device is provided with an inlet and an outlet, and the heat recovery pipeline sequentially passes through the outlet of the heat recovery device, a heat dissipation unit of the refrigerating machine and the inlet of the heat recovery device to form a heat recovery circulation loop; the heat recovery pipeline is filled with heat conduction fluid. The heat recovery device comprises a first heat exchanger, the first heat exchanger is provided with a first heat exchange channel and a second heat exchange channel, and an inlet and