A refrigeration device has a housing with an inner liner, a lower housing plate, and a beam connecting the inner liner and the lower housing plate. A reinforcing member is fixed on the beam for enhancing a strength of a bottom wall. A cavity is formed between the reinforcing member and a front wall. Thermal insulation material formed by foaming is disposed inside and outside the cavity. The reinforcing member and the front wall of the beam enclose the cavity, so that the thermal insulation material enables the beam and the reinforcing member to form a whole for bearing a force. The assembly is thus improved for preventing deformation of the bottom wall due to impact.