Reformer and fuel cell system

The utility model relates to the technical field of fuel cells, in particular to a reformer and a fuel cell system. The reformer comprises a shell structure, a fuel gas cavity and a hot gas cavity are formed in the shell structure, the fuel gas cavity and the hot gas cavity are arranged side by side in the cross section direction of the shell structure, and a catalyst is arranged in the fuel gas cavity; a water evaporator is arranged in the hot air cavity and provided with a water pipe outlet, the fuel gas cavity is provided with a fuel gas inlet, and the water pipe outlet of the water evaporator is communicated with the fuel gas inlet of the fuel gas cavity. The liquid water evaporation function is integrated through the reformer, the heat utilization efficiency is improved, the component integration degree is improved, and meanwhile the overall heat exchange effect is more uniform. 本实用新型涉及燃料电池技术领域，尤其涉及一种重整器及燃料电池系统。重整器包括壳体结构，所述壳体结构内设置有燃气腔和热气腔，所述燃气腔和热气腔沿着所述壳体结构的横截面方向并列布置，所述燃气腔内布置有催化剂；所述热气腔内设置有水蒸发器，所述水蒸发器具有水管出