VACUUM INSULATED ARTICLES WITH REFLECTIVE MATERIAL ENHANCEMENT
Provided are vacuum-insulated articles that comprise an evacuated space disposed between first and second walls and a reflective material disposed within the evacuated space. Also provided are methods of fabricating such articles.
1 . A vacuum-insulated article, comprising:
a first wall having a first thermal conductivity;
a second wall having a second thermal conductivity;
a first sealed insulating space formed between the first wall and the second wall, the insulating space defining therein a region of reduced pressure,
the first sealed insulating space being at least partially defined by a bridge material that has a thermal conductivity that is less than the first thermal conductivity and the second thermal conductivity;
optionally, a reflective material disposed within the first sealed insulating space, the reflective material optionally comprising boron nitride.
2 . The article of claim 1 , further comprising a first vent communicating with the first insulating space to provide an exit pathway for gas molecules from the first insulating space, the first vent being sealable for maintaining a first vacuum within the first insulating space following evacuation of gas molecules through the first vent.
3 . The article of claim 1 , wherein the thermal conductivity of the bridge material is less than 50% of the lesser of the first thermal conductivity and the second thermal conductivity.
4 . The article of claim 3 , wherein the thermal conductivity of the bridge material is less than 10% of the lesser of the first thermal conductivity and the second thermal conductivity.
5 . (canceled)
6 . An article, comprising: (a) an outer wall; (b) an inner wall; (c) a first sealed insulating space formed between the outer wall and the inner wall,
at least one of the outer and inner walls having a sloped region that slopes toward the other wall, the sloped region at least partially defining the first sealed insulating space the at least one wall having the sloped region further comprising a joint land connected to and extending from the sloped region, and the joint land forming a non-zero angle with the sloped region.
7 . The article of claim 6 , wherein the outer wall and inner wall and joined to one another along at least a portion of the joint land.
8 . The article of claim 6 , wherein the outer wall is tubular, wherein the inner wall is tubular, wherein the inner wall defines a central major axis, wherein the sloped region defines a first distance along the central major axis, and wherein the joint land defines a second distance along the central major axis.
9 . (canceled)
10 . A vacuum-insulated article, comprising:
a first wall and a second wall;
a first sealed insulating space formed between the first wall and the second wall,
the insulating space defining therein a region of reduced pressure;
a first vent communicating with the first insulating space to provide an exit pathway for gas molecules from the first insulating space, the first vent being sealable for maintaining a first vacuum within the first insulating space following evacuation of gas molecules through the first vent;
a first seal sealing the first insulating space at the first vent; and
at least one portion of a reflective material having a surface, the at least one portion of reflective material being disposed within the insulating space,
the surface of the reflective material comprising boron nitride.
11 . (canceled)
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14 . The article of claim 10 , further comprising a portion of a metallic sheeting material disposed within the insulating space.
15 . The article of claim 10 , wherein the reflective material comprises a ceramic fiber.
16 . The article of claim 10 , wherein the reflective material comprises alumina, silica, or both.
17 . (canceled)
18 . The article of claim 14 , wherein the metallic sheeting material is disposed between at least two portions of reflective material.
19 . The article of claim 10 , wherein the reflective material is disposed between at least two portions of metallic sheeting material.
20 . (canceled)
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22 . (canceled)
23 . The article of claim 10 , further comprising a third wall disposed such that the second wall is between the first and third walls.
24 . The article of claim 23 , further comprising a second insulating space disposed between the second and third walls and further comprising a portion of reflective material disposed within the second insulating space, the surface of the reflective material comprising boron nitride.
25 . (canceled)
26 . An article, comprising
first and second walls defining a sealed vacuum space disposed therebetween; and
at least one portion of a reflective material disposed within the sealed vacuum space,
the surface of the reflective material comprising boron nitride.
27 . (canceled)
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30 . The article of claim 26 , further comprising a metallic sheeting material disposed adjacent to the first wall, disposed adjacent to the second wall, or both.
31 . The article of claim 26 , further comprising a third wall disposed such that the second wall is between the first and third walls, further comprising a second insulating space disposed between the second and third walls, and further comprising a portion of the reflective material disposed within the second insulating space.
32 . (canceled)
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41 . A vacuum-insulated vessel, comprising:
a first wall and a second wall defining a first insulating space of reduced pressure disposed between the first and second walls;
the second wall enclosing the first wall and the first wall enclosing and defining a storage volume;
a first conduit disposed so as to place the storage volume into fluid communication with the environment exterior to the vessel; and
a first vent communicating with the first insulating space to provide an exit pathway for gas molecules from the first insulating space, the first vent being sealable for maintaining a first vacuum within the first insulating space following evacuation of gas molecules through the first vent;
a first seal sealing the first insulating space at the first vent; and
at least one portion of reflective material disposed within the first insulating space,
the surface of the reflective material comprising boron nitride.
42 . The vessel of claim 41 , wherein at least one of the first and second walls comprises a curvilinear region.
43 . (canceled)
44 . (canceled)
45 . The vessel of claim 41 , wherein the first conduit comprises a first conduit wall and a second conduit wall, the first and second conduit walls defining therebetween an insulating conduit space of reduced pressure.
46 . The vessel of claim 45 , wherein the first conduit comprises a first vent communicating with the insulating conduit space so as to provide an exit pathway for gas molecules from the insulating conduit space, the first vent being sealable for maintaining a first vacuum within the insulating conduit space following evacuation of gas molecules through the first vent, the first conduit further comprising a first seal sealing the first insulating space at the first vent.
47 . The vessel of claim 41 , further comprising a baffle wall, the baffle wall being disposed within the first wall of the vessel, the baffle wall at least partially enclosing the storage volume, and the baffle wall and the first wall of the vessel defining a spillover volume therebetween, the spillover volume being capable of fluid communication with the storage volume.
48 . (canceled)
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