Vacuum insulation system for insulating refrigeration cabinets

A refrigeration appliance having an outer cabinet, a liner inside said cabinet, and thermal insulation interposed in a space between said cabinet and said liner, said thermal insulation comprising:

• a plurality of vacuum insulation panels, each of said panels comprising at least one hermetically sealed vacuum compartment defined by at least two walls of gas-impermeable barrier film laminate sealed together about their peripheries, said compartment being filled with a microporous filler insulating material and being evacuated of atmospheric gasses, each of said vacuum thermal insulation panels being secured within the space between said liner and said cabinet, and adjacent panels being spaced apart from each other and from the corners of said cabinet;
• and
• polyurethane foam insulation blown into the space between said liner and said cabinet and surrounding and permeating the gaps between said vacuum thermal insulation panels and said corners of said cabinet, said foam providing added thermal insulation and structural rigidity to said cabinet;
• wherein each of said vacuum thermal insulation panels comprises an outer wall of gas-impermeable barrier film laminate facing said cabinet, said gas-impermeable barrier film laminate comprising an outer layer of plastic barrier film laminate and a layer of metal foil laminated to said plastic barrier film laminate, said layer of metal foil terminating a distance from each of the edges of the barrier film walls of said vacuum thermal insulation panel, said distance without metal foil protected from said cabinet by an insulating medium at the interface between said vacuum panel and said cabinet.

A refrigeration appliance having an outer cabinet, a liner inside said cabinet, and thermal insulation interposed in a space between said cabinet and said liner, said thermal insulation comprising:

• a plurality of vacuum thermal insulation panels, each of said panels comprising at least one hermetically sealed vacuum compartment defined by at least two walls of gas-impermeable barrier film laminate sealed together about their peripheries, said compartment being filled with a microporous filler insulating material and being evacuated of atmospheric gasses, each of said vacuum thermal insulation panels being secured within the space between said liner and said cabinet, and adjacent panels being spaced apart from each other and from the corners of said cabinet;
• and
• polyurethane foam insulation blow into the space between said liner and said cabinet and surrounding and permeating the gaps between said vacuum thermal insulation panels and said corners of said cabinet, said foam providing added thermal insulation and structural rigidity to said cabinet;
• wherein each of said vacuum thermal insulation panels comprises a first and a second wall of barrier films, said first wall of barrier film comprising a layer of plastic barrier film laminate forming an outer surface of said first wall of barrier film, and a layer of metal foil laminated to an inner side of said plastic film laminate, wherein said layer of metal foil terminates 0.25 inches or more from the edge of two opposite sides of said outside surface of said vacuum thermal insulation panel thereby forming a thermal break on two edges, and said layer of metal foil terminates at the edge of the remaining two sides of said vacuum thermal insulation panel;
• and said second wall of barrier film being similar to said first wall of barrier film and sealed to said first wall of barrier film about their perimeters to form said sealed compartment, said second wall of barrier film rotated 90.degree. with respect to said first wall such that a thermal break is disposed on each edge of said vacuum thermal insulation panel.

A refrigeration appliance having an outer cabinet, a liner spaced from an inside surface of said cabinet, and thermal insulation interposed in the space between said cabinet and said liner, said thermal insulation comprising:

• a plurality of vacuum thermal insulation panels, each of said panels comprising at least two walls of gas-impermeable barrier film laminate sealed together about their peripheries to form a compartment, said compartment being filled with a microporous filler insulating material and being evacuated of atmospheric gases, each of said vacuum thermal insulation panels being secured within the space between said liner and said cabinet, and adjacent panels being spaced apart from each other and from the corners of said cabinet;
• and polyurethane foam insulation blown into the space between said liner and said cabinet and surrounding and permeating the gaps between said vacuum thermal insulation panels and said corners of said cabinet, said foam providing added thermal insulation and structural rigidity to said cabinet;
• wherein each of said vacuum thermal insulation panels comprises an outer layer of gas-impermeable barrier film laminate facing said cabinet inside surface, said gas-impermeable barrier film laminate comprising an outer layer of plastic barrier film laminate and a layer of metal foil laminated to said plastic barrier film laminate, said layer of metal foil terminating a distance from the edges of the film layers of said vacuum thermal insulation panel.