A thermally induced insulating structure based on laminated glass

Abstract

The utility model provides a kind of heat-induced thermal insulation structure based on laminated glass, comprising, Fabry-Perot cavity, laminated glass, first heat insulation film, Fabry-Perot cavity is located in the outermost side of laminated glass, first heat insulation film is located in the innermost side of laminated 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 laminated glass Fabry-Perot cavity of the utility model is located outside laminated glass, directly exposed to ambient temperature, shortens discoloration response time, curtain wall overall regulation consistency is high, avoids the discoloration uneven phenomenon caused by local temperature difference of hollow glass.

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 laminated 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. Laminated glass consists of two or more panes of glass bonded together by an interlayer (using adhesives such as PVB / EVA / SGP). 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 ambient temperature rises, causing it to change color, alter its light absorption, and reduce visible light transmittance, thereby improving the overall thermal insulation performance. However, when used in large-area curtain walls, the laminated structure prolongs the heat transfer path, resulting in a long response time. This leads to a lag in overall curtain wall control, causing energy consumption rebound. Furthermore, the heat released during the phase transition of thermochromic materials can cause localized softening of the laminate, reducing its impact resistance. Utility Model Content

[0004] In view of this, the present invention aims to propose a thermotropic insulation structure based on laminated glass to solve the problems that when thermotropic glass is used on large-area curtain walls, the laminated structure prolongs the heat transfer path, has a long response time, and causes the overall control of the curtain wall to lag, resulting in energy consumption rebound. When thermotropic materials undergo phase change, they release heat, which causes the laminate to soften locally and reduce its impact resistance.

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

[0006] This utility model provides a thermotropic insulation structure based on laminated glass, including a Fabry-Perot cavity, laminated glass, and a first heat insulation film. The Fabry-Perot cavity is located on the outermost side of the laminated glass, and the first heat insulation film is located on the innermost side of the laminated 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 laminated glass is 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] Furthermore, the interlayer material of the laminated glass is one of PVB, SGP, or EVA.

[0012] Compared with existing technologies, the thermo-insulating structure based on laminated glass described in this utility model has the following advantages:

[0013] (1) The Fabry-Perot cavity of this utility model is located on the outside of the laminated glass and is directly exposed to the ambient temperature, which shortens the color change response time, and the overall control consistency of the curtain wall is high. It avoids the uneven color change phenomenon caused by local temperature difference of the insulated glass. The Fabry-Perot cavity is located on the outside, avoiding direct contact with the interlayer and reducing interface stress.

[0014] (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

[0015] 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.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the internal structure of the thermo-insulating structure based on laminated glass described in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Laminated glass; 2. Fabry-Perot cavity; 3. First heat insulation film. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] 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.

[0022] 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.

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] See Figure 1 As shown, this embodiment provides a thermotropic insulation structure based on laminated glass, including a Fabry-Perot cavity 2, laminated glass 1, and a first heat-insulating film 3. The Fabry-Perot cavity 2 is located on the outermost side of the laminated glass 1, and the first heat-insulating film 3 is located on the innermost side of the laminated 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.

[0025] Specifically, in this embodiment, the thickness of the Fabry-Perot cavity is 1–3 μm.

[0026] Specifically, in this embodiment, the Low-E film thickness is between 50 and 300 nm.

[0027] Specifically, in this embodiment, the laminated glass 1 is a flat glass with a thickness of 4 mm or more.

[0028] 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.

[0029] Specifically, in this embodiment, the interlayer material of the laminated glass 1 is one of PVB, SGP, and EVA.

[0030] Example 1:

[0031] The glass configuration is as follows: 6mm ultra-clear tempered glass (Fabry-Perot cavity) combined with 1.52mm PVB (intermediate material for laminated glass) and 6mm ultra-clear tempered glass (magnetron sputtering offline silver-free Low-E film).

[0032] 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 specific instruments (spectrophotometer) and detection devices. The detection devices simulate the ambient temperature rising from room temperature of 23°C to the target temperature of 60°C to simulate the use environment of glass.

[0033] 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.

[0034] 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%.

[0035] 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.

[0036] The Fabry-Perot cavity is located on the outside of the laminated glass, directly exposed to ambient temperature, shortening the color change response time. This ensures high overall consistency in curtain wall control and avoids uneven color change caused by localized temperature differences in insulated glass units. The Fabry-Perot cavity's location on the outside also prevents direct contact with the interlayer, reducing interfacial stress. Based on the thermotropic insulation structure of the laminated glass, the overall energy transmittance of the glass can be controlled by changes in external heat. 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, barely 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.

[0037] 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 insulation structure based on laminated glass, characterized in that, It includes a Fabry-Perot cavity, laminated glass, and a first heat insulation film. The Fabry-Perot cavity is located on the outermost side of the laminated glass, and the first heat insulation film is located on the innermost side of the laminated glass. The surface of the Fabry-Perot cavity is provided with a Low-E film layer and a vanadium dioxide doped layer.

2. The thermo-insulating structure based on laminated glass according to claim 1, characterized in that, The thickness of the Fabry-Perot cavity is 1~3μm.

3. The thermostatic insulation structure based on laminated 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 laminated glass according to claim 1, characterized in that, Laminated glass is flat glass with a thickness of 4 mm or more.

5. The thermostatic insulation structure based on laminated glass according to claim 1, characterized in that, The interlayer material of laminated glass is one of PVB, SGP, or EVA.

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