Patent ID: 8117792

Claim:
A fixing structure of insulation panels of a prefabricated refrigerator, the insulation panels constituting a cabinet of the prefabricated refrigerator, comprising: a recess defined at one surface of a first insulation panel, the first insulation panel having a first insulation portion inside a first casing; and a protrusion disposed on one surface of a second insulation panel, the second insulation panel having a second insulation portion inside a second casing, the second casing extending to cover side surfaces of the protrusion, the protrusion being configured to be inserted into the recess, wherein, on the protrusion, the second casing extends only along the side surfaces of the protrusion, wherein the first insulation portion is exposed to insulation packing materials at a bottom of the recess and the second insulation portion is exposed to the insulation packing materials at a front end of the protrusion, and wherein the insulation packing materials are disposed between the bottom of the recess and the front end of the protrusion and the first insulation panel is fixed to the second insulation panel in an air-tight manner.