Adhesively secured vacuum insulated panels for refrigerators
A method of making a cabinet for refrigerators and the like. The method includes forming a liner and a wrapper. The method further includes providing a vacuum insulated core that includes a filler material disposed inside a substantially impermeable envelope that is evacuated to form a vacuum inside of the envelope. The vacuum insulated core includes a first wall and a second wall extending transversely relative to the first wall. The core is adhesively secured to the wrapper, and the liner is adhesively secured to the core. The wrapper and the liner are sealed together at the peripheries thereof.
1. A method of making a vacuum insulated refrigerator component, the method comprising:
forming a wrapper having inner and outer opposite sides, a periphery, wherein the wrapper includes a central wall portion and edge walls that extend transversely from the central wall portion to form a core-receiving space;
forming a liner having inner and outer opposite sides and a periphery;
providing a vacuum insulated core comprising a filler material disposed inside a substantially impermeable envelope, wherein the envelope is evacuated to form a vacuum inside the envelope, and wherein the vacuum insulated core comprises a three-dimensional (3D) core having a first wall, and a second wall extending transversely relative to the first wall;
depositing uncured two-component adhesive onto the vacuum insulated 3D core before the wrapper and the liner are assembled;
assembling the wrapper and the liner to form an interior space, wherein the vacuum insulated 3D core is disposed in the interior space;
interconnecting the wrapper and liner;
curing the adhesive;
wherein the vacuum insulated 3D core is positioned in the core-receiving space of the wrapper and a lower side of the vacuum insulated 3D core is adhered to the wrapper utilizing double-sided adhesive tape or hot melt adhesive and then depositing the uncured two-component adhesive
onto an upper side of the vacuum insulated 3D core; and adhesively securing the vacuum insulated 3D core to the liner by causing the uncured two-component adhesive to flow between the vacuum insulated 3D core and the liner.
2. The method of claim 1 , including:
positioning the wrapper and the liner between first and second tool parts with the vacuum insulated 3D core disposed between the wrapper and the liner.
3. The method of claim 1 , wherein:
the uncured two-component adhesive is deposited utilizing an open pour process.
4. The method of claim 1 , wherein:
the two-component adhesive comprises a polyurethane that forms a foam when cured.
5. The method of claim 1 , wherein:
a portion of the liner is spaced apart from the vacuum insulated 3D core to form a liner gap of about 5 mm.
6. The method of claim 1 , wherein:
the vacuum insulated 3D core is initially a flat panel; and including:
folding the flat panel along one or more fold lines to form the first wall and the second wall, wherein the flat panel is folded after the envelope is evacuated to form a vacuum.
7. The method of claim 1 , wherein:
the wrapper, liner, and vacuum insulated 3D core form a refrigerator cabinet having an interior space configured to store refrigerated food therein and an access opening; and including:
movably mounting a door to the refrigerator cabinet whereby the door selectively closes off at least a portion of the access opening.
8. The method of claim 1 , including:
interconnecting the peripheries of the wrapper and the liner.
9. The method of claim 1 , wherein:
the adhesive cures after the wrapper, liner, and 3d core are assembled.