Patent ID: 6944926

Claim:
A method for disassembling a refrigerator comprising the processes of: collecting a refrigerant gas and removing a compressor; cutting/processing and separating a heat-insulating housing including a heat insulator into a plurality of pieces; and compressing/processing the pieces by compression rollers opposing each other so as to collect a gas contained in the heat insulator; wherein the process of cutting/processing and separating the heat-insulating housing uses a cutting device comprising at least a first rotating unit and a second rotating unit, each of these rotating units comprising: a rotor with a principal plane, a spindle provided in a normal direction to the principal plane, and at least one impacting body mounted on the spindle rotatably, wherein the impacting body is mounted so that a predetermined fitting gap is provided between the impacting body and the spindle and a part of a periphery of the impacting body can be positioned beyond a periphery of the rotor, and when the heat-insulating housing is formed by layering at least a first layer and a second layer that have different critical impact velocities, the first layer is cut mainly by the impacting body of the first rotating unit, the second layer is cut mainly by the impacting body of the second rotating unit, and an impact velocity of the impacting body of the first rotating unit against the heat-insulating housing is made different from that of the impacting body of the second rotating unit against the heat-insulating housing.