A method for retaining a cooling unit in an aperture in a thermally insulated wall of a cool box has an inner and an outer frame having six locking elements and enclosing the cooling system

摘要

The cooling unit, such as a Peltier thermoelectric module, is contained in a housing (14) with a flange (15) to surround the wall aperture on the outside and with ratchet features (13) which cooperate with ribs (6) in the inner face of the inner frame (2). Accurate location is provided by tabs (8) engaging slits (9) and ribs (12,13) around the ratchet features.