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US 12,460,468 B2Granted
Vacuum insulated panel with edge seal
AssigneeLuxWall, Inc.
InventorScott V. Thomsen
Life of this patent
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Abstract
A vacuum insulating panel includes first and second substrates (e.g., glass substrates), a hermetic edge seal, a pump-out port, and spacers sandwiched between at least the two substrates. The gap between the substrates may be at a pressure less than atmospheric pressure to provide insulating properties. The vacuum insulating panel may include a multi-layer edge seal structure, including at least one layer including boron oxide (e.g., B2O3 or any other stoichiometry).
Claims55
A vacuum insulating panel comprising:
- a first substrate;
- a second substrate;
- a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal provided at least partially between at least the first and second substrates, the seal comprising a first seal layer and a second seal layer which at least partially overlap each other;
- and
- wherein the second seal layer comprises boron oxide and bismuth oxide, wherein the second seal layer comprises from about 1-20 mol % bismuth oxide and from about 20-65 mol % boron oxide, and comprises at least two times as much boron oxide as bismuth oxide in terms of mol %, and wherein the second seal layer comprises elements in the following order of magnitude on an elemental basis:
- B>Si>Bi>Ti.
4 more elements
A vacuum insulating panel comprising:
- a first substrate;
- a second substrate;
- at least one spacer provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal provided at least partially between at least the first and second substrates, the seal comprising a first seal layer and a second seal layer which at least partially overlap each other;
- wherein the second seal layer comprises boron oxide and bismuth oxide, wherein the second seal layer comprises at least two times as much boron oxide as bismuth oxide in terms of mol %;
- wherein the second seal layer comprises, in terms of mol %, from about 4-9% bismuth oxide, from about 40-55% boron oxide, from about 15-35% silicon oxide, and from about 3-12% titanium oxide.
3 more elements
A vacuum insulating panel comprising:
- a first substrate;
- a second substrate;
- a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal provided at least partially between at least the first and second substrates, the seal comprising a first seal layer and a second seal layer;
- wherein the second seal layer comprises boron oxide and bismuth oxide, wherein the second seal layer comprises at least four times as much boron oxide as bismuth oxide in terms of mol %, and
- wherein the second seal layer comprises from about 1-12 mol % bismuth oxide, at least about 45 mol % boron oxide, and from about 15-35 mol % silicon oxide.
3 more elements
A vacuum insulating panel comprising:
- a first glass substrate;
- a second glass substrate;
- a plurality of spacers provided in a gap between at least the first and second substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal provided at least partially between at least the first and second substrates, the seal comprising a first seal layer, a second seal layer, and a third seal layer, wherein the first seal layer is at least partially located between at least the second and third seal layers;
- wherein the first seal layer comprises from about 20-80 wt. % tellurium oxide, the tellurium oxide comprising TeO4 and TeO3, and wherein the first seal layer comprises more TeO3 than TeO4 by wt. %;
- and
- wherein the second and third seal layers each comprise from about 20-65 mol. % boron oxide and a bridging oxygen (BO) content of at least about 80%.
4 more elements
Dependencies are inferred from the claim text.