REFRIGERATION CABINET Russian patent published in 2003 - IPC

FIELD: food, milk, yeast, meat, biotechnological branches of industry, as well as in medicine and research laboratories for keeping of products. SUBSTANCE: the refrigeration cabinet has a heat-insulated casing, freezer and refrigerated compartments, refrigerating unit. Installed in the casing is a chamber in the form of two concentrically installed shells of vacuum-tight material. A vacuum-shield heat insulation is placed between them. The ends of each shell are made spread through angle α larger than π, but not in excess of 2π. The clearance between the shells is closed from top and bottom by spacer rings. The longitudinal clearance between the shells is closed by a strip. A branch pipe with a vacuum transducer in the cavity between the shells, valve and plug is connected to the outer shell. Installed in the inner shell are spacer heat-insulated covers and at least two perforated spacer shelves. Evaporators in the freezer and refrigerated compartments shave the shape of shells. The refrigeration cabinet has profiled spacers between the casing and strips on both ends of the shell and between the casing and the outer shell. The spacers are made of non-conducting material. A vacuum transducer is installed in the cavity between the shells. EFFECT: enhanced stiffness of the cabinet construction at temperature strains appearing in service, stable vacuum in heat-insulation guard and minimized consumption of electric power in operation. 4 dwg