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US 12,612,821 B2Granted
Vacuum insulated panel with improved thermal performance proximate edge of glass during asymmetric thermal conditions
AssigneeLuxWall, Inc.
InventorsScott V. Thomsen, Christian Bischoff
Life of this patent
Estimating the term…
Abstract
A vacuum insulating panel may include: 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; and a seal (e.g., edge seal) provided at least partially between at least the first and second glass substrates. Components such as edge seal material(s) and/or dimension(s) thereof are configured in a vacuum insulating panel to improve thermal performance to provide for higher glass temperatures on the warm side of the panel during asymmetric thermal conditions, proximate the edge seal and/or at other locations, so as to improve thermal performance.
Claims65
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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal, comprising a first layer and a second layer, provided at least partially between at least the first and second glass substrates;
- wherein no more than two glass substrates are provided in the vacuum insulating panel;
- wherein a thermal conductivity of the second seal layer is greater than a thermal conductivity of the first seal layer;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, the panel has at least two of:
- (i) a warm side glass temperature rise rate (TRR) of at least about 0.14 degrees C./mm from a location 12.5 mm laterally inward from the edge of the panel to a location 62.5 mm laterally inward from the edge of the panel, where TRR=(T62.5−T12.5)/(62.5−12.5), where T62.5 is glass temperature in degrees C. on the warm side measured at a location 62.5 mm laterally inward from the edge of the panel and T12.5 is glass temperature in degrees con the warm side measured at a location 12.5 mm laterally inward from the edge of the panel;
- (ii) a warm side glass temperature of at least 19.7 degrees C. at a location 62.5 mm laterally inward from the edge of the panel;
- and
- (iii) a warm side glass temperature of at least 12.4 degrees C. at a location 12.5 mm laterally inward from the edge of the panel.
9 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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a substantially lead-free seal provided at least partially between at least the first and second glass substrates, wherein the seal comprises a first seal layer and a second seal layer comprising of different respective materials, the first and second seal layers having different respective thicknesses and widths at a given location, wherein the first seal layer has a lower thermal conductivity than the second seal layer;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, the panel has at least two of:
- (i) a warm side glass temperature rise rate (TRR) of at least about 0.14 degrees C./mm from a location 12.5 mm laterally inward from the edge of the panel to a location 62.5 mm laterally inward from the edge of the panel, where TRR=(T62.5−T12.5)/(62.5−12.5), where T62.5 is glass temperature in degrees C. on the warm side measured at a location 62.5 mm laterally inward from the edge of the panel and T12.5 is glass temperature in degrees C. on the warm side measured at a location 12.5 mm laterally inward from the edge of the panel;
- (ii) a warm side glass temperature of at least 19.7 degrees C. at a location 62.5 mm laterally inward from the edge of the panel;
- and
- (iii) a warm side glass temperature of at least 12.4 degrees C. at a location 12.5 mm laterally inward from the edge of the panel.
7 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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal provided at least partially between at least the first and second glass substrates, wherein the seal comprises a first seal layer and a second seal layer of different respective materials, the first and second seal layers having different respective thicknesses at a given location;
- wherein a thermal conductivity of the second seal layer is greater than a thermal conductivity of the first seal layer;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, a surface temperature curve for the warm side of the vacuum insulating panel is approximately characterized by the following equation:
- T
-
- (
- x
- )
- =
- T
- m
-
- i
-
- n
- +
- [
- (
- T
- m
-
- ax
- -
- T
- m
-
- i
-
- n
- )
- ×
- (
- x
- n
- /
- (
- k
- n
- +
- x
- n
- )
- )
- ]
- where Tmin is a minimum measured temperature, Tmax is a maximum measured temperature, x represents x-axis which in mm represents distance moving laterally inward from the edge of the panel, n is a fitting factor/parameter, and k is a fitting factor/parameter regarding inflection point.
46 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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal, comprising first and second seal layer, provided at least partially between at least the first and second glass substrates;
- wherein no more than two glass substrates are provided in the vacuum insulating panel;
- wherein the first seal layer has a density of from about 2.8-4.0 g/cm3, the second seal layer has a density of from about 3.0-4.2 g/cm3, and wherein the density of the second seal layer is at least about 0.20 g/cm3 greater than the density of the first seal layer;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, the panel has at least two of:
- (i) a warm side glass temperature rise rate (TRR) of at least about 0.14 degrees C./mm from a location 12.5 mm laterally inward from the edge of the panel to a location 62.5 mm laterally inward from the edge of the panel, where TRR=(T62.5−T12.5)/(62.5−12.5), where T62.5 is glass temperature in degrees C. on the warm side measured at a location 62.5 mm laterally inward from the edge of the panel and T12.5 is glass temperature in degrees C. on the warm side measured at a location 12.5 mm laterally inward from the edge of the panel;
- (ii) a warm side glass temperature of at least 19.7 degrees C. at a location 62.5 mm laterally inward from the edge of the panel;
- and
- (iii) a warm side glass temperature of at least 12.4 degrees C. at a location 12.5 mm laterally inward from the edge of the panel.
9 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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal, comprising first and second seal layer, provided at least partially between at least the first and second glass substrates;
- wherein no more than two glass substrates are provided in the vacuum insulating panel;
- wherein, for at least one location of the seal, a width of the first seal layer is less than a width of the second seal layer by at least about 1 mm;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, the panel has at least two of:
- (i) a warm side glass temperature rise rate (TRR) of at least about 0.14 degrees C./mm from a location 12.5 mm laterally inward from the edge of the panel to a location 62.5 mm laterally inward from the edge of the panel, where TRR=(T62.5−T12.5)/(62.5−12.5), where T62.5 is glass temperature in degrees C. on the warm side measured at a location 62.5 mm laterally inward from the edge of the panel and T12.5 is glass temperature in degrees C. on the warm side measured at a location 12.5 mm laterally inward from the edge of the panel;
- (ii) a warm side glass temperature of at least 19.7 degrees C. at a location 62.5 mm laterally inward from the edge of the panel;
- and
- (iii) a warm side glass temperature of at least 12.4 degrees C. at a location 12.5 mm laterally inward from the edge of the panel.
9 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 glass substrates, wherein the gap is at pressure less than atmospheric pressure;
- a seal, comprising first and second seal layer, provided at least partially between at least the first and second glass substrates;
- wherein no more than two glass substrates are provided in the vacuum insulating panel;
- wherein for at least one location a ratio Wp/W of second seal width (Wp) to first seal width (W) is from about 1.2 to 2.2;
- and
- wherein material(s) and/or dimension(s) of the seal are configured so that, under reference testing conditions where the panel is positioned between warm (about 21 degrees C., about 8-10% relative humidity) and cold (about minus 18 degrees C.) areas and a wind speed (about 6 mph) applied in the cold area, until steady-state conditions have been met for temperature on both sides, and an infrared camera is used to measure glass temperature on the warm side at different locations moving laterally inward from the edge of the panel, the panel has at least two of:
- (i) a warm side glass temperature rise rate (TRR) of at least about 0.14 degrees C./mm from a location 12.5 mm laterally inward from the edge of the panel to a location 62.5 mm laterally inward from the edge of the panel, where TRR=(T62.5−T12.5)/(62.5−12.5), where T62.5 is glass temperature in degrees C. on the warm side measured at a location 62.5 mm laterally inward from the edge of the panel and T12.5 is glass temperature in degrees C. on the warm side measured at a location 12.5 mm laterally inward from the edge of the panel;
- (ii) a warm side glass temperature of at least 19.7 degrees C. at a location 62.5 mm laterally inward from the edge of the panel;
- and
- (iii) a warm side glass temperature of at least 12.4 degrees C. at a location 12.5 mm laterally inward from the edge of the panel.
9 more elements
Dependencies are inferred from the claim text.