High-efficiency energy-saving door and window glass structure based on graphene heat conduction regulation and manufacturing method

Abstract

The application discloses a high-efficiency energy-saving door and window glass structure based on graphene heat conduction regulation and a manufacturing method, relates to the field of door and window glasses, and comprises an outer frame plate, an inner frame plate and a controller, the inner frame plate is fixedly connected to the inner wall of the outer frame plate, and the controller is embeddedly installed on the side wall of the outer frame plate, characterized in that the inner frame plate comprises a fixed frame two, outer layer glass, middle layer glass and inner layer glass, and the outer layer glass, the middle layer glass and the inner layer glass are all fixedly connected to the inner wall of the fixed frame two. The graphene nanobelt directional heat conduction film is arranged along the glass normal direction by the magnetic field induced electrophoretic deposition technology, an efficient heat conduction path perpendicular to the glass surface is constructed, cold energy can be quickly conducted out in winter, and heat flow is blocked in summer; indoor heat preservation is enhanced in winter through the graphene film directional heat conduction; in summer, the phase change material is combined with melting heat absorption, indoor heat gain is reduced by more than 30%, and high-efficiency energy saving is realized.

Description

Technical Field

[0001] This invention relates to the field of technology, specifically to a high-efficiency energy-saving door and window glass structure and manufacturing method based on graphene thermal conductivity regulation. Background Technology

[0002] Building energy consumption accounts for approximately 40% of global energy consumption, with doors and windows, as the weakest link in the building envelope, bearing 50%-60% of the indoor-outdoor heat exchange. Traditional energy-saving door and window glass technology mainly achieves energy conservation through static structural design.

[0003] Currently, existing window and door glass has limited thermal conductivity control capabilities, passively blocking or reflecting heat without dynamically adjusting the direction and rate of heat flow based on ambient temperature and solar radiation intensity, resulting in heat loss in winter or insufficient insulation in summer. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency energy-saving door and window glass structure and manufacturing method based on graphene thermal conductivity regulation, so as to solve the problem mentioned in the background art that the existing door and window glass has a single thermal conductivity regulation capability, can only passively block or reflect heat, and cannot dynamically adjust the direction and rate of heat flow according to the ambient temperature and solar radiation intensity, resulting in heat loss in winter or insufficient heat insulation in summer.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation, comprising an outer frame plate, an inner frame plate, and a controller. The inner frame plate is fixedly connected to the inner wall of the outer frame plate, and the controller is embedded in the side wall of the outer frame plate. The inner frame plate includes a fixed frame two, an outer glass layer, a middle glass layer, and an inner glass layer. The outer glass layer, the middle glass layer, and the inner glass layer are all fixedly connected to the inner wall of the fixed frame two. The outer glass layer includes a hydrophobic layer, a glass substrate one, a graphene nanoribbon directional thermal conductive film, and a phase change material layer. The hydrophobic layer is disposed on the outer surface of the glass substrate one. The graphene nanoribbon directional thermal conductive film and the phase change material layer are both fixedly connected to the inner side wall of the glass substrate one. The phase change material layer is disposed below the graphene nanoribbon directional thermal conductive film. The middle glass layer includes a composite low-emissivity film and a glass substrate two. A composite low-emissivity film is disposed inside the outer glass layer and fixedly connected to the outer surface of the glass substrate two.

[0006] Preferably, a sealing strip is provided at the connection between the outer glass, the middle glass and the inner glass and the second fixed frame, and a heat insulation strip is embedded and connected to the outer side of the second fixed frame, and a limit strip is fixedly connected to the inner edge.

[0007] Preferably, the inner glass layer includes a composite dimming film, a glass substrate three, and conductive electrode tabs, with the composite dimming film fixedly connected to the surface of the glass substrate three.

[0008] Preferably, two conductive electrode ears are provided, both of which are fixedly connected to the bottom surface of the composite dimming film, and the conductive electrode ears are electrically connected to the controller.

[0009] Preferably, the outer frame includes a first fixing frame, a first heat insulation strip, heat insulation cotton, and a partition strip. The partition strip is connected through the inner wall of the first fixing frame, and the second fixing frame is fixedly connected to the inner side wall of the partition strip.

[0010] Preferably, the insulation cotton is embedded in the inner wall of the fixed frame and is placed on the outside of the partition strip.

[0011] Preferably, the heat insulation strip is placed on the outside of the insulation cotton, and the heat insulation strip is embedded in the inner wall of the fixed frame.

[0012] A method for manufacturing high-efficiency energy-saving door and window glass structures based on graphene thermal conductivity regulation includes the following steps:

[0013] S1. Cut the glass substrate according to the set size to obtain the outer glass, middle glass and inner glass, and at the same time prepare the graphene nanoribbon oriented film.

[0014] S2. A graphene-silica nanocomposite coating is applied to the surface of the outer glass using an aerosol spraying method, with a coating thickness of 50-80 nm.

[0015] S3. A graphene nanoribbon directional thermal conductive film with a width of 50-100nm and a length of 5-10μm is arranged on the upper side of the back of the outer glass. The directional arrangement along the glass normal is achieved by magnetic field-induced electrophoretic deposition technology. A phase change material layer is set on the lower side of the back of the outer glass.

[0016] S4. An Ag / graphene composite low-emissivity film was prepared on the surface of the middle glass by magnetron sputtering, and a graphene-liquid crystal film was prepared and fixed on the surface of the inner glass.

[0017] S5. Cut and process the profiles of fixed frame one and fixed frame two to the design size, then install and fix the processed outer glass, middle glass and inner glass in fixed frame two in sequence, and vacuum the gap between the outer glass and the middle glass.

[0018] The electrodes of S6, the graphene nanoribbon directional heat-conducting film and the composite dimming film are led out through FPC and connected to the controller for control.

[0019] S7. After installation, seal the edges of the entire window and door glass, apply sealant a second time, cover the air inlet, and reshape it.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, the graphene nanoribbons are oriented along the glass normal direction by magnetic field-induced electrophoretic deposition technology to construct a high-efficiency heat conduction path perpendicular to the glass surface. In winter, it can quickly dissipate cold energy and block heat flow in summer. In winter, the graphene film enhances indoor heat preservation through directional heat conduction, and in summer, it combines with phase change materials to melt and absorb heat, reducing indoor heat gain by more than 30%, thus achieving high efficiency and energy saving.

[0022] 2. In this invention, a graphene-liquid crystal film based on PDLC technology is used to set up a composite dimming film. A voltage of 0-30V is applied through the conductive electrode tabs to make the liquid crystal molecules change from disorder to order, thereby realizing dynamic optical control: the light transmission mode is automatically switched according to the solar radiation intensity. In the summer, the scattering state can block 60% of direct sunlight and reduce the indoor temperature by 3-5℃, while in the winter, the transparent state allows more solar energy to enter.

[0023] 3. In this invention, by setting up thermal insulation cotton and thermal insulation strip one, the rock wool thermal insulation cotton with high density filling density in the frame cavity and the outer thermal insulation strip one can further block the conduction of cold and heat from the outside. Together with the inner sealing strip, a triple thermal insulation system of "broken bridge + filling + sealing" is formed to achieve the suppression of thermal bridges in the frame. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention;

[0025] Figure 2 This is a partial internal structure diagram of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention.

[0026] Figure 3 This is a side view of the internal structure of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention.

[0027] Figure 4 This is a schematic diagram of the outer glass layer of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention;

[0028] Figure 5 This is a schematic diagram of the middle glass layer of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention;

[0029] Figure 6 This is a schematic diagram of the inner glass layer of the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention;

[0030] Figure 7 This is a flowchart of the manufacturing method for a high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to the present invention.

[0031] In the diagram: 1. Outer frame; 11. Fixing frame one; 12. Thermal insulation strip one; 13. Thermal insulation cotton; 14. Partition strip; 2. Inner frame; 21. Fixing frame two; 22. Outer glass; 221. Hydrophobic layer; 222. Glass substrate one; 223. Graphene nanoribbon directional thermal conductive film; 224. Phase change material layer; 23. Middle glass; 231. Composite low-emissivity film; 232. Glass substrate two; 24. Inner glass; 241. Composite dimming film; 242. Glass substrate three; 243. Conductive electrode ear; 25. Sealing strip; 26. Limiting strip; 27. Thermal insulation strip two; 3. Controller. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1: Refer to Figure 1 - Figure 6 The diagram illustrates a high-efficiency energy-saving door and window glass structure and manufacturing method based on graphene thermal conductivity regulation. It includes an outer frame plate 1, an inner frame plate 2, and a controller 3. The inner frame plate 2 is fixedly connected to the inner wall of the outer frame plate 1. The controller 3 is embedded in the side wall of the outer frame plate 1. The inner frame plate 2 includes a fixed frame 21, an outer glass layer 22, a middle glass layer 23, and an inner glass layer 24. The outer glass layer 22, middle glass layer 23, and inner glass layer 24 are all fixedly connected to the inner wall of the fixed frame 21. The outer glass layer 22 includes a hydrophobic layer 221, a glass substrate 222, and a graphene nanoribbon directional thermally conductive film 2. 23 and phase change material layer 224, hydrophobic layer 221 are disposed on the outer surface of glass substrate 1 222, graphene nanoribbon directional heat conduction film 223 and phase change material layer 224 are both fixedly connected to the inner sidewall of glass substrate 1 222, phase change material layer 224 is disposed below graphene nanoribbon directional heat conduction film 223, middle glass 23 includes composite low emissivity film 231 and glass substrate 222, 28 is disposed between outer glass 22 and middle glass 23, composite low emissivity film 231 is disposed inside 28 and fixedly connected to the outer surface of glass substrate 222.

[0034] In this embodiment, a superhydrophobic surface is formed by combining a graphene-silica nanocomposite coating with a glass substrate 222, utilizing the lotus leaf effect to achieve self-cleaning while reducing light reflectivity. Magnetic field-induced electrophoretic deposition technology is used to orient the nanoribbons of the graphene nanoribbon directional heat-conducting film 223 along the glass normal, constructing a highly efficient heat-conducting path perpendicular to the glass surface. This allows for rapid heat dissipation in winter and heat blockage in summer. In winter, the directional heat conduction of the graphene film enhances indoor insulation, while in summer, the melting and heat absorption of the phase change material reduces indoor heat gain by more than 30%, achieving high energy efficiency. The phase change material layer 224, using octadecane / graphene quantum dot composite microcapsules, undergoes a solid-liquid phase change at 22℃ in winter and 28℃ in summer, buffering indoor and outdoor temperature fluctuations through latent heat absorption / release and extending the thermal response time.

[0035] Example 2: Figure 3 As shown, sealing strips 25 are provided at the connection between the outer glass 22, the middle glass 23 and the inner glass 24 and the fixing frame 21. A heat insulation strip 27 is embedded and connected to the outside of the fixing frame 21. A limit strip 26 is fixedly connected to the inner edge of the frame 28. The inner glass 24 includes a composite dimming film 241, a glass substrate 3 242 and conductive electrode ears 243. The composite dimming film 241 is fixedly connected to the surface of the glass substrate 3 242. There are two conductive electrode ears 243. Both conductive electrode ears 243 are fixedly connected to the bottom surface of the composite dimming film 241. The conductive electrode ears 243 are electrically connected to the controller 3.

[0036] In this embodiment, the sealing strip 25 and the second heat insulation strip 27 are filled with silicone sealant with a Shore hardness of 30A to fill the gap between the glass and the second fixed frame 21. The second heat insulation strip 27, combined with the thermal break structure, is made of nylon 66 + 25% glass fiber to block the thermal bridge of the frame and reduce the heat transfer coefficient of the entire window. The composite dimming film 241 is based on graphene-liquid crystal film with PDLC technology. A voltage of 0-30V is applied through the conductive electrode ear 243 to make the liquid crystal molecules change from disorder to order, realizing dynamic optical control: the light transmission mode is automatically switched according to the solar radiation intensity. In the summer, the scattering state can block 60% of direct sunlight and reduce the indoor temperature by 3-5℃. In the winter, the transparent state allows more solar energy to enter.

[0037] Example 3: According to Figure 1 and Figure 2 As shown, the outer frame 1 includes a fixing frame 11, a heat insulation strip 12, a heat insulation cotton 13, and a partition strip 14. The partition strip 14 is connected through the inner wall of the fixing frame 11. The fixing frame 21 is fixedly connected to the inner wall of the partition strip 14. The heat insulation cotton 13 is embedded in the inner wall of the fixing frame 11 and is located on the outside of the partition strip 14. The heat insulation strip 12 is located on the outside of the heat insulation cotton 13 and is embedded in the inner wall of the fixing frame 11.

[0038] In this embodiment, by setting up the insulation cotton 13 and the heat insulation strip 12, the frame cavity is filled with rock wool insulation cotton of high density, and the outer heat insulation strip 12 further blocks the conduction of cold and heat from the outside. Together with the inner sealing strip, a triple heat insulation system of "broken bridge + filling + sealing" is formed. The outer frame is divided into indoor and outdoor parts by the partition strip 14 to form a broken bridge structure, which increases the heat conduction path length by 3 times and reduces the thermal conductivity of the frame.

[0039] Example 4: According to Figure 7 As shown, this embodiment provides a method for manufacturing a high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation, including the following steps:

[0040] Step 1: Cut the glass substrate according to the set dimensions to obtain the outer glass 22, the middle glass 23 and the inner glass 24, and at the same time prepare the graphene nanoribbon oriented film.

[0041] Step 2: Apply a graphene-silica nanocomposite coating to the surface of the outer glass 22 using an aerosol spraying method. The coating thickness is 50-80 nm.

[0042] Step 3: A graphene nanoribbon directional thermal conductive film 223 with a width of 50-100nm and a length of 5-10μm is arranged on the upper side of the back of the outer glass 22. The directional arrangement along the glass normal is achieved by magnetic field-induced electrophoretic deposition technology. A phase change material layer 224 is set on the lower side of the back of the outer glass 22.

[0043] Step 4: Prepare an Ag / graphene composite low-emissivity film on the surface of the middle glass 23 by magnetron sputtering, and prepare a graphene-liquid crystal film and fix it on the surface of the inner glass 24.

[0044] Step 5: Cut and process the profiles of fixed frame 11 and fixed frame 21 to the design size, then install and fix the processed outer glass 22, middle glass 23 and inner glass 24 in fixed frame 21 in sequence, and vacuum the gap between the outer glass 22 and the middle glass 23.

[0045] Step 6: Connect the electrodes of the graphene nanoribbon directed heat conduction film 223 and the composite dimming film 241 to the controller 3 via FPC, and use the controller 3 for control.

[0046] Step 7: After installation, seal the edges of the entire window and door glass, apply a second layer of sealant, cover the air inlet, and reshape it.

[0047] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation, comprising an outer frame plate (1), an inner frame plate (2), and a controller (3), wherein the inner frame plate (2) is fixedly connected to the inner wall of the outer frame plate (1), and the controller (3) is embedded in the side wall of the outer frame plate (1), characterized in that: The inner frame plate (2) includes a fixed frame two (21), an outer glass layer (22), a middle glass layer (23), and an inner glass layer (24). The outer glass layer (22), the middle glass layer (23), and the inner glass layer (24) are all fixedly connected to the inner wall of the fixed frame two (21). The outer glass layer (22) includes a hydrophobic layer (221), a glass substrate one (222), a graphene nanoribbon directional heat-conducting film (223), and a phase change material layer (224). The hydrophobic layer (221) is disposed on the outer surface of the glass substrate one (222). The graphene nanoribbon directional heat-conducting film (223) and the phase change material layer (224) are both fixedly connected to the inner sidewall of the first glass substrate (222). The phase change material layer (224) is disposed below the graphene nanoribbon directional heat-conducting film (223). The middle glass (23) includes a composite low-emissivity film (231) and a second glass substrate (232). A gap is provided between the outer glass (22) and the middle glass (23). The composite low-emissivity film (231) is disposed inside the gap and fixedly connected to the outer surface of the second glass substrate (232). By combining the graphene-silica nanocomposite coating with the glass substrate (222), a superhydrophobic surface is formed, and the lotus leaf effect is used to achieve self-cleaning. The graphene nanoribbons of the oriented heat-conducting film (223) are oriented along the glass normal direction by magnetic field-induced electrophoretic deposition technology, and an efficient heat conduction path perpendicular to the glass surface is constructed. The inner glass (24) includes a composite dimming film (241), a glass substrate (242), and conductive electrode tabs (243). The composite dimming film (241) is fixedly connected to the surface of the glass substrate (242). Two conductive electrode ears (243) are provided, and both conductive electrode ears (243) are fixedly connected to the bottom surface of the composite dimming film (241). The conductive electrode ears (243) are electrically connected to the controller (3). The outer frame (1) includes a first fixed frame (11), a first heat insulation strip (12), a heat insulation cotton (13) and a partition strip (14). The inner wall of the first fixed frame (11) is connected to the partition strip (14), and the second fixed frame (21) is fixedly connected to the inner wall of the partition strip (14). The insulation cotton (13) is embedded in the inner wall of the fixed frame (11), and the insulation cotton (13) is set on the outside of the partition strip (14); The heat insulation strip (12) is placed on the outside of the insulation cotton (13) and is embedded in the inner wall of the fixed frame (11).

2. The high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 1, characterized in that: A sealing strip (25) is provided at the connection between the outer glass (22), the middle glass (23) and the inner glass (24) and the second fixed frame (21). A heat insulation strip (27) is embedded and connected to the outside of the second fixed frame (21), and a limit strip (26) is fixedly connected to the inner edge of the gap.

3. A method for manufacturing high-efficiency energy-saving door and window glass structures based on graphene thermal conductivity regulation, characterized in that, The method for manufacturing the high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation as described in claim 1 or 2 includes the following steps: S1. Cut the glass substrate according to the set size to obtain the outer glass (22), the middle glass (23) and the inner glass (24), and at the same time prepare the graphene nanoribbon directional heat conduction film. S2. A graphene-silica nanocomposite coating is applied to the surface of the outer glass (22) by aerosol spraying, with a coating thickness of 50-80 nm. S3. A graphene nanoribbon directional heat-conducting film (223) with a width of 50-100nm and a length of 5-10μm is arranged on the upper side of the back of the outer glass (22). The directional arrangement along the glass normal is achieved by magnetic field-induced electrophoretic deposition technology. A phase change material layer (224) is set on the lower side of the back of the outer glass (22). S4. An Ag / graphene composite low-emissivity film was prepared on the surface of the middle glass (23) by magnetron sputtering, and a graphene-liquid crystal film was prepared and fixed on the surface of the inner glass (24). S5. Cut and process the profiles of fixed frame one (11) and fixed frame two (21) to the design size, and then install and fix the processed outer glass (22), middle glass (23) and inner glass (24) in fixed frame two (21) in sequence, and vacuum the gap between the outer glass (22) and the middle glass (23). The electrodes of S6, the graphene nanoribbon directional heat conduction film (223) and the composite dimming film (241) are led out through FPC and connected to the controller (3), and controlled by the controller (3); S7. After installation, seal the edges of the entire window and door glass, apply sealant a second time, cover the air inlet, and reshape it.

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