Cabinet
AssigneeNorfrost Limited
InventorAlexander Grant
Life of this patent
Estimating the term…
Abstract
A temperature-controlled cabinets, particularly, refrigerators, freezers, fridge-freezers and drinks coolers (chillers) which, in order to overcome the problem of inferior insulative properties of alternative polyurethane foams used to reduce the emission of CFC's during injection and setting of foamed polyurethane, provides a cabinet within which a controllable stable temperature may be maintained. This cabinet includes an inner container (25a), an outer shell (10a), and a thermally insulating material (45a) sandwiched therebetween, wherein at least a portion of a front side (50a) of the outer shell (10a) has a panel (85a) which is displaced outwardly from the rest of the front side (50a) of the outer shell (10a). In a preferred embodiment, the cabinet forms a chest freezer (5a).
Claims9
A cabinet within which a controllable stable temperature is maintainable, the cabinet having a point at its center defining an inward direction of the cabinet, said cabinet comprising an inner container having four sides of substantially rectangular shape and defining a cavity surrounding said center point, said cabinet further comprising an outer shell having a front side and first and second laterals sides of substantially rectangular shape, wherein a portion of the front side of the outer shell has a panel in a plane which is displaced outwardly relative to other portions of the front side;
- wherein a portion of each of the first and second lateral sides of the outer shell has a respective further panel in a plane which is displaced outwardly relative to other portions of said lateral sides, wherein a thermally insulating foam material fills a space formed between the inner container and outer shell including the outwardly displaced panels;
- and wherein first and second edges formed between said other portions of the front side and the first lateral side and between said other portions of the front side and the second lateral side respectively, provide edges of the cabinet which are located outwardly relative to adjacent edges on said panels.
A method of manufacturing a temperature controlled cabinet with a point at its center defining the inward direction relative to the cabinet wherein, the method comprises:
- forming an outer shell having a front side and first and second lateral sides;
- forming a panel on the front side in a plane which is displaced outwardly relative to other portions of said front side;
- forming a panel on each lateral side in a plane which is displaced outwardly from other portion of the respective lateral side;
- forming an inner container having fours sides of substantially rectangular shape which define a cavity surrounding said center point;
- assembling the outer shell and inner container in relation to one another such that first and second edges formed between said other portions of the front side and the first lateral side, and between said other portions of the front side and the second lateral side, respectively, comprise first and second outermost edges of the cabinet which are located outwardly relative to adjacent edges on said panels;
- and
- filling a space formed between the inner container and outer shell including the panels with a thermal insulating foam material.
Dependencies are inferred from the claim text.