A thermally induced insulation structure based on monolithic glass

Abstract

The utility model provides a kind of heat-induced thermal insulation structure based on single glass, comprising, Fabry-Perot cavity, single glass, first heat insulation film, Fabry-Perot cavity is located in the outermost side of single glass, first heat insulation film is located in the innermost side of single glass, Fabry-Perot cavity surface is equipped with Low-E film layer and vanadium dioxide doped layer, wherein the proportion of tungsten element doped in vanadium dioxide doped layer is 1%~3%.The heat-induced thermal insulation structure based on single glass described in the utility model has no hollow layer barrier, the outer Fabry-Perot cavity directly contacts ambient temperature, the response time is shortened, and the near-infrared reflectivity can be quickly regulated, the consistency is high when the whole regulation of large-area curtain wall, and the discoloration uneven phenomenon caused by local temperature difference of glass is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of glass structure, and in particular relates to a thermo-insulating structure based on a single pane of glass. Background Technology

[0002] Fabry-Perot cavities possess a high degree of precision, enabling extremely fine filtering of light at different frequencies. Only light with frequencies meeting specific conditions can form stable oscillations within the cavity, thus achieving high-precision selection of light frequencies. Thermotropic insulating glass is a type of glass with special heat-insulating properties; it can adjust its heat-insulating effect according to temperature changes.

[0003] Most existing technologies utilize thermochromic glass, which heats the glass body as the ambient temperature rises, causing it to change color, alter its light absorption, and reduce visible light transmittance, thereby improving the overall heat insulation effect. However, monolithic thermochromic materials (such as VO2) typically only effectively adjust light transmittance within a specific temperature range (e.g., 20-30℃), and may fail at extreme temperatures. Furthermore, when used in large-area curtain walls, the uniform coating process for large-size monolithic glass requires stringent conditions, resulting in low yield rates and high application costs. Utility Model Content

[0004] In view of this, the present invention aims to propose a thermochromic insulation structure based on monolithic glass to solve the problems that thermochromic materials of monolithic structures can usually only effectively adjust the light transmittance within a specific temperature range and may fail under extreme temperatures. Furthermore, when used on large-area curtain walls, the uniform coating process of large-size monolithic glass is demanding, resulting in low yield and high application costs.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] This utility model provides a thermo-insulating structure based on a monolithic glass, comprising a Fabry-Perot cavity, a monolithic glass, and a first heat-insulating film. The Fabry-Perot cavity is located on the outermost side of the monolithic glass, and the first heat-insulating film is located on the innermost side of the monolithic glass. The surface of the Fabry-Perot cavity is provided with a Low-E film layer and a vanadium dioxide doped layer, wherein the proportion of tungsten doped in the vanadium dioxide doped layer is 1% to 3%.

[0007] Furthermore, the thickness of the Fabry-Perot cavity is 1–3 μm.

[0008] Furthermore, the Low-E film thickness ranges from 50 to 300 nm.

[0009] Furthermore, the single-pane glass is a flat glass with a thickness of 4 mm or more.

[0010] Furthermore, the first heat insulation film material is one or a combination of two or more of the following: online Low-E, offline silver-free Low-E, solar film, and colored glaze.

[0011] Compared with existing technologies, the thermo-insulating structure based on monolithic glass described in this utility model has the following advantages:

[0012] (1) The single-pane glass of this utility model has no hollow layer barrier, and the outer Fabry-Perot cavity is in direct contact with the ambient temperature, which shortens the response time and can quickly adjust the near-infrared reflectivity. It has high consistency in the overall control of large-area curtain walls and avoids the uneven coloring phenomenon caused by local temperature difference of the glass.

[0013] (2) This utility model can control the energy transmittance of the overall glass by changing the external heat. The higher the external heat, the less energy passes through the glass, the better the heat insulation effect. Moreover, it has little impact on the transmittance of visible light, and the color change is also small. It hardly affects the appearance color and does not affect the indoor lighting. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0015] In the attached diagram:

[0016] Figure 1 This is a schematic diagram of the internal structure of the thermo-insulating structure based on a single pane of glass described in an embodiment of this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Monolithic glass; 2. Fabry-Perot cavity; 3. First heat insulation film. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] See Figure 1 As shown, this embodiment provides a thermotropic insulation structure based on a single pane of glass, including a Fabry-Perot cavity 2, a single pane of glass 1, and a first heat-insulating film 3. The Fabry-Perot cavity 2 is located on the outermost side of the single pane of glass 1, and the first heat-insulating film 3 is located on the innermost side of the single pane of glass 1. The surface of the Fabry-Perot cavity 2 is provided with a Low-E film layer and a vanadium dioxide doped layer, wherein the proportion of tungsten doped in the vanadium dioxide doped layer is 1% to 3%. The Low-E film is deposited by magnetron sputtering, and the vanadium dioxide doped layer is formed by spin coating. The magnetron sputtering coating process is a mature process and equipment that can be directly applied. Only appropriate modifications to the spin coating equipment are needed to achieve mass production.

[0024] Specifically, in this embodiment, the thickness of the Fabry-Perot cavity is 1–3 μm.

[0025] Specifically, in this embodiment, the Low-E film thickness is between 50 and 300 nm.

[0026] Specifically, in this embodiment, the single piece of glass 1 is a flat glass with a thickness of 4 mm or more.

[0027] Specifically, in this embodiment, the first heat insulation film 3 is made of one or a combination of two or more of the following materials: online Low-E, offline silver-free Low-E, solar film, and colored glaze. The function of the first heat insulation film is heat preservation; only with good heat preservation can the heat-induced heat insulation effect last for a longer period of time.

[0028] Example 1:

[0029] The glass configuration is: 6mm ultra-clear tempered glass (Fabry-Perot cavity) combined with 6mm ultra-clear tempered glass (offline silver-free Low-E film).

[0030] The offline silver-free Low-E film, whose main component is ITO (indium tin oxide), has a visible light transmittance of 90% to 91%. The experiment uses a specific instrument (spectrophotometer) and detection device. The detection device simulates the ambient temperature rising from room temperature of 23°C to the target temperature of 60°C to simulate the use environment of glass.

[0031] At 23℃, this glass has a visible light transmittance of 65.1 (TL), a* (23℃) transmittance of red and green colors of -2.1, b* (23℃) transmittance of yellow and blue colors of 3.8, and SHGC (23℃) total solar energy transmittance of 0.62.

[0032] At 60℃, the visible light transmittance (TL) of this glass is 60.2%. The red-green transmittance value (a*) at 60℃ is -1.6, the yellow-blue transmittance value (b*) at 60℃ is 4, and the total solar energy transmittance (SHGC) at 60℃ is 0.52. The control efficiency = [SHGC(23℃) - SHGC(60℃)] * 100% = 10%.

[0033] As can be seen from the examples, temperature changes have little impact on visible light transmittance, which is within 5%. Color changes are also relatively small, with both before and after the change remaining in the same color family and the deviation being small, so they have little impact on the appearance color of the product.

[0034] The monolithic glass, without a hollow layer, allows the outer Fabry-Perot cavity to directly contact the ambient temperature, resulting in a shorter response time and rapid adjustment of near-infrared reflectivity. This ensures high consistency in the overall control of large-area curtain walls, avoiding uneven discoloration caused by localized temperature differences. The thermotropic insulation structure based on monolithic glass can control the overall energy transmittance of the glass by varying external heat levels. Higher external heat results in less energy transmission through the glass, leading to better insulation. Furthermore, it has minimal impact on visible light transmittance and color change, virtually affecting the appearance and indoor lighting. In actual products, energy changes are highly synchronized with temperature changes, with a response time of less than 1 second.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thermotropic thermal insulation structure based on a single pane of glass, characterized in that, It includes a Fabry-Perot cavity, a monolithic glass, and a first heat-insulating film. The Fabry-Perot cavity is located on the outermost side of the monolithic glass, and the first heat-insulating film is located on the innermost side of the monolithic glass. The surface of the Fabry-Perot cavity is provided with a Low-E film layer and a vanadium dioxide doped layer.

2. The thermostatic insulation structure based on a single pane of glass according to claim 1, characterized in that, The thickness of the Fabry-Perot cavity is 1~3 nm.

3. The thermostatic insulation structure based on a single pane of glass according to claim 2, characterized in that, The thickness of the Low-E film is 50~300nm.

4. The thermostatic insulation structure based on a single pane of glass according to claim 1, characterized in that, Single-pane glass is flat glass with a thickness of 4 mm or more.

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