Vacuum IG window unit with metal member in hermetic edge seal
View Patent ↗A vacuum insulating glass (IG) unit and/or a method of making the same is/are provided. In certain example embodiments, the edge seal includes at least one metal member located between the opposing substrates (e.g., glass substrates). The at least one metal member may be bonded to the glass substrate(s) via a bonding material such as solder glass, frit and/or the like. The provision of the at least one metal member in the edge seal, between and/or exterior the glass substrates, is advantageous in that this provides for a more flexible edge seal permitting more give and take during window flexing in different environmental conditions. The additional flexibility of the edge seal may reduce the amount of optical distortion caused by flexing of the window, and/or the likelihood of window breakage in certain environmental conditions.
1. A thermally insulating glass panel comprising:
first and second spaced apart glass substrates defining a low pressure space therebetween having a pressure of equal to or less than about 0.5×10 −3 Torr;
a plurality of spacers disposed between said first and second glass substrates in order to space the substrates from one another; and
a hermetic edge seal disposed at least partially between said first and second glass substrates for hermetically sealing said low pressure space, wherein said edge seal comprises at least one substantially U-shaped metal member that is bonded to each of the first and second glass substrates, wherein said substantially U-shaped member includes first and second approximately parallel legs that are connected to each other with a base, wherein the first and second legs are bonded to respective inner surfaces the first and second glass substrates using solder glass, where the solder glass is provided between each of the legs and the inner surfaces of the glass substrates and extends along and contacts at least part of the base, wherein said base is either substantially straight or slightly curved, and wherein said substantially U-shaped member is oriented so that an open side of the substantial U-shape faces inwardly toward the low pressure space.
2. The panel of claim 1 , wherein said substantially U-shaped member is oriented so that an open-side of the substantial U-shape faces outwardly away from the low pressure space.
3. The panel of claim 1 , wherein substantially U-shaped member is continuous and forms a ring around and/or proximate the entire periphery of the panel.
4. The panel of claim 1 , wherein the substantially U-shaped metal member is bonded to at least one of the first and second glass substrates using low temperature ceramic frit.
5. A thermally insulating glass panel comprising:
first and second spaced apart glass substrates defining a low pressure space therebetween having a pressure less than or equal to about 10 −6 Torr;
a plurality of spacers disposed between said first and second glass substrates in order to space the substrates from one another; and
a hermetic edge seal disposed at least partially between said first and second glass substrates for hermetically sealing said low pressure space, wherein said edge seal comprises at least one substantially U-shaped metal member that is bonded to each of the first and second glass substrates using at least a solder glass.
6. The panel of claim 5 , wherein at least a substantial portion of the substantially U-shaped metal member is not located between the first and second glass substrates.
7. The panel of claim 5 , wherein the substantially U-shaped metal member encapsulates at least parts of peripheral edges of both the first and second glass substrates.
8. The panel of claim 5 , wherein said substantially U-shaped member includes first and second approximately parallel legs that are connected to each other with a base, and wherein the first leg is bonded to the first glass substrate and the second leg is bonded to the second glass substrate.
9. The panel of claim 5 , wherein said substantially U-shaped member is located substantially between the first and second glass substrates and is oriented so that an open-side of the substantial U-shape faces inwardly toward the low pressure space.
10. The panel of claim 5 , wherein the substantially U-shaped metal member is bonded to each of the first and second glass substrates using solder glass.