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

Abstract

The invention discloses an efficient energy-saving door and window glass structure based on graphene heat conduction regulation and a manufacturing method, and relates to the field of door and window glass, the efficient energy-saving door and window glass structure 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 embedded in the side wall of the outer frame plate; the glass window is characterized in that the inner frame plate comprises a second fixing frame, 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 second fixing frame. The nanobelts of the graphene nanobelt directional heat conduction film are directionally arranged in the normal direction of the glass through the magnetic field induction electrophoretic deposition technology, an efficient heat conduction path perpendicular to the surface of the glass is constructed, cold energy can be quickly guided out in winter, heat flow is blocked in summer, and indoor heat preservation is enhanced through directional heat conduction of the graphene film in winter; in summer, the phase-change material is melted to absorb heat, indoor heat is reduced by more than 30%, and high efficiency and energy conservation are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a high-efficiency and energy-saving door and window glass structure and a manufacturing method based on graphene thermal conductivity regulation. Background Art

[0002] Buildings consume approximately 40% of global energy consumption. Doors and windows, as the weak link in the building envelope, account for 50%-60% of indoor-outdoor heat exchange. Traditional energy-saving door and window glass technology primarily achieves energy savings through static structural design.

[0003] At present, the existing door and window glass has a single thermal conductivity and regulation capability, which can only passively block or reflect heat. It 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 insulation in summer. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-efficiency and energy-saving door and window glass structure and manufacturing method based on graphene thermal conductivity regulation, so as to solve the problem proposed in the above background technology that the existing door and window glass has a single thermal conductivity regulation ability, 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 insulation in summer.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an efficient and 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 being fixedly connected to the inner wall of the outer frame plate, the controller being embedded in the side wall of the outer frame plate, the inner frame plate comprising a fixed frame 2, an outer layer of glass, a middle layer of glass and an inner layer of glass, the outer layer of glass, the middle layer of glass and the inner layer of glass being all fixedly connected to the inner wall of the fixed frame 2, the outer layer of glass comprising a hydrophobic layer, a glass substrate 1, a graphene nanoribbon directional thermal conductive film and a phase change material layer, the hydrophobic layer being arranged on the outer surface of the glass substrate 1, the graphene nanoribbon directional thermal conductive film and the phase change material layer being fixedly connected to the inner side wall of the glass substrate 1, the phase change material layer being arranged below the graphene nanoribbon directional thermal conductive film, the middle layer of glass comprising a composite low-emissivity film and a glass substrate 2, being arranged between the outer layer of glass and the middle layer of glass, the composite low-emissivity film being arranged inside and fixedly connected to the outer surface of the glass substrate 2.

[0006] Preferably, sealing strips are provided at the connections between the outer glass, the middle glass, the inner glass and the fixed frame 2, the outer side of the fixed frame 2 is embedded with the insulation strip 2, and the inner edge is fixedly connected to the limit strip.

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

[0008] Preferably, two conductive electrode ears are provided, and both conductive electrode ears 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 plate includes a fixed frame 1, an insulation strip 1, thermal insulation cotton and a partition strip, the inner wall of the fixed frame 1 is connected with the partition strip, and the fixed frame 2 is fixedly connected to the inner wall of the partition strip.

[0010] Preferably, the thermal insulation cotton is embedded in the inner wall of the fixed frame 1, and the thermal insulation cotton is arranged on the outside of the partition strip.

[0011] Preferably, the heat insulation strip 1 is arranged on the outside of the thermal insulation cotton, and the heat insulation strip 1 is embedded in the inner wall of the fixed frame 1.

[0012] A method for manufacturing a high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation includes the following steps: S1. Cutting the glass substrate into outer glass, middle glass, and inner glass according to set dimensions, and simultaneously preparing an oriented graphene nanoribbon film; S2, coating the surface of the outer glass with a graphene-silicon dioxide nanocomposite coating by an aerosol spray method, with a coating thickness of 50-80 nm; S3. Arrange a graphene nanoribbon directional heat-conducting film on the upper back side of the outer glass, with a width of 50-100 nm and a length of 5-10 μm. Use magnetic field-induced electrophoretic deposition technology to achieve directional alignment along the normal direction of the glass. Set a phase change material layer on the lower back side of the outer glass. S4, preparing an Ag / graphene composite low-emissivity film on the surface of the middle glass by magnetron sputtering, and preparing a graphene-liquid crystal film fixed on the surface of the inner glass; S5. Cut and process the profiles of the first and second fixing frames into the designed dimensions, then sequentially install and fix the processed outer glass, middle glass, and inner glass into the second fixing frame, and vacuum the space between the outer glass and the middle glass; S6, the electrodes of the graphene nanoribbon directional heat conduction film and the composite dimming film are connected to the controller through the FPC and controlled by the controller; S7. After the installation is completed, the edges of the door and window glass will be sealed as a whole, and sealant will be applied for the second time. The air injection port will be covered and shaped.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the nanoribbons of the graphene nanoribbon directional heat-conducting film are oriented along the normal direction of the glass through magnetic field-induced electrophoretic deposition technology, constructing an efficient heat-conducting path perpendicular to the glass surface. The cooling capacity can be quickly extracted in winter and the heat flow can be blocked in summer. In winter, the directional heat conduction of the graphene film enhances indoor thermal insulation. In summer, the phase change material melts and absorbs heat, reducing indoor heat gain by more than 30%, thereby achieving high efficiency and energy saving.

[0014] 2. In the present invention, a graphene-liquid crystal film based on PDLC technology is set up through the setting of a composite dimming film. A voltage of 0-30V is applied through the conductive electrode ear to change the liquid crystal molecules from disorder to order, thereby realizing dynamic optical regulation: the light transmission mode is automatically switched according to the intensity of solar radiation. In summer, the scattering state can block 60% of direct sunlight and reduce the indoor temperature by 3-5°C. In winter, the transparent state allows more solar energy to enter.

[0015] 3. In the present invention, through the arrangement of thermal insulation cotton and thermal insulation strip 1, the frame cavity is filled with rock wool thermal insulation cotton with a high density, and the outer thermal insulation strip 1 can further block the outdoor heat and cold conduction, and cooperate with the inner sealing strip to form a "broken bridge + filling + sealing" triple insulation system to achieve frame thermal bridge suppression. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 2 This is a schematic diagram of part of the internal structure of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 3 This is a side view schematic diagram of the internal structure of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 4 This is a schematic structural diagram of the outer glass of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 5 This is a schematic structural diagram of the middle glass layer of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 6 This is a schematic diagram of the structure of the inner glass of the high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention; Figure 7 This is a flow chart of the method for manufacturing a high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation of the present invention.

[0017] In the figure: 1. Outer frame; 11. Fixed frame 1; 12. Insulation strip 1; 13. Insulation cotton; 14. Partitioning strip; 2. Inner frame; 21. Fixed frame 2; 22. Outer glass; 221. Hydrophobic layer; 222. Glass substrate 1; 223. Graphene nanoribbon directional thermal conductive film; 224. Phase change material layer; 23. Middle glass; 231. Composite low-emissivity film; 232. Glass substrate 2; 24. Inner glass; 241. Composite dimming film; 242. Glass substrate 3; 243. Conductive ear; 25. Sealing strip; 26. Limiting strip; 27. Insulation strip 2; 3. Controller. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0019] Example 1: Reference Figure 1 - Figure 6 As shown: a high-efficiency energy-saving door and window glass structure and manufacturing method based on graphene thermal conductivity control, 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, and the inner frame plate 2 comprises a fixed frame 21, an outer layer of glass 22, a middle layer of glass 23 and an inner layer of glass 24, wherein the outer layer of glass 22, the middle layer of glass 23 and the inner layer of glass 24 are all fixedly connected to the inner wall of the fixed frame 21, and the outer layer of glass 22 comprises a hydrophobic layer 221, a glass substrate 1 222, a graphene nanoribbon directional thermal conductive film 2 23 and a phase change material layer 224, the hydrophobic layer 221 is arranged on the outer surface of the glass substrate 1 222, the graphene nanoribbon directional heat conductive film 223 and the phase change material layer 224 are both fixedly connected to the inner wall of the glass substrate 1 222, the phase change material layer 224 is arranged below the graphene nanoribbon directional heat conductive film 223, the middle glass 23 includes a composite low-emissivity film 231 and a glass substrate 232, 28 is arranged between the outer glass 22 and the middle glass 23, the composite low-emissivity film 231 is arranged inside 28 and fixedly connected to the outer surface of the glass substrate 232.

[0020] In this embodiment, a super-hydrophobic surface is formed by combining a graphene-silicon dioxide nanocomposite coating with a glass substrate 222, and self-cleaning is achieved by utilizing the lotus leaf effect while reducing light reflectivity. The nanoribbons of the graphene nanoribbon directional heat-conducting film 223 are oriented along the normal direction of the glass through magnetic field-induced electrophoretic deposition technology, thereby constructing an efficient heat-conducting path perpendicular to the glass surface. Cold air can be quickly extracted in winter and heat flow can be blocked in summer. In winter, indoor thermal insulation is enhanced by directional heat conduction through the graphene film, and in summer, heat absorption is achieved by melting the phase change material to reduce indoor heat gain by more than 30%, thereby achieving high efficiency and energy saving. By setting the phase change material layer 224 and using octadecane / graphene quantum dot composite microcapsules, a solid-liquid phase change occurs at 22°C in winter / 28°C in summer, and the temperature difference between indoor and outdoor is buffered by latent heat absorption / release, thereby extending the thermal response time.

[0021] Example 2: Figure 3 As shown, sealing strips 25 are provided at the connections between the outer layer of glass 22, the middle layer of glass 23 and the inner layer of glass 24 and the fixed frame 21. The outer side of the fixed frame 21 is embedded with a second heat insulation strip 27, and the inner edge of 28 is fixedly connected to a limit strip 26. The inner layer of glass 24 includes a composite dimming film 241, a third glass substrate 242 and a conductive electrode lug 243. The composite dimming film 241 is fixedly connected to the surface of the third glass substrate 242. Two conductive electrode lugs 243 are provided, and both conductive electrode lugs 243 are fixedly connected to the bottom surface of the composite dimming film 241. The conductive electrode lugs 243 are electrically connected to the controller 3.

[0022] In this embodiment, the sealing strip 25 and the insulation strip 27 use silicone sealant with a Shore hardness of 30A to fill the gap between the glass and the fixed frame 21. The insulation strip 27 with a broken bridge structure uses nylon 66+25% glass fiber to block the thermal bridge of the frame and reduce the heat transfer coefficient of the entire window. Through the setting of the composite dimming film 241 based on the graphene-liquid crystal film of PDLC technology, a 0-30V voltage is applied through the conductive electrode ear 243 to change the liquid crystal molecules from disorder to order, realizing dynamic optical regulation: the light transmission mode is automatically switched according to the intensity of solar radiation. The scattering state in summer can block 60% of direct sunlight and reduce the indoor temperature by 3-5°C. The transparent state in winter allows more solar energy to enter.

[0023] Example 3: According to Figure 1 and Figure 2 As shown, the outer frame plate 1 includes a fixed frame 11, an insulation strip 12, thermal insulation cotton 13 and a partition rubber strip 14. The inner wall of the fixed frame 11 is penetrated by the partition rubber strip 14, the fixed frame 21 is fixedly connected to the inner wall of the partition rubber strip 14, the thermal insulation cotton 13 is embedded in the inner wall of the fixed frame 11, the thermal insulation cotton 13 is arranged on the outside of the partition rubber strip 14, the insulation strip 12 is arranged on the outside of the insulation cotton 13, and the insulation strip 12 is embedded in the inner wall of the fixed frame 11.

[0024] In this embodiment, through the arrangement of thermal insulation cotton 13 and thermal insulation strip 12, the frame cavity is filled with high-density rock wool thermal insulation cotton, and the outer thermal insulation strip 12 further blocks the outdoor heat and cold conduction, and cooperates with the inner layer of sealing strip to form a "broken bridge + filling + sealing" triple insulation system. The outer frame is divided into two parts, indoor and outdoor, by the partition strip 14, forming a broken bridge structure, and the heat conduction path length is increased by 3 times, thereby reducing the thermal conductivity coefficient of the frame.

[0025] Example 4: According to Figure 7 As shown, this embodiment provides a method for manufacturing a high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation, comprising the following steps: Step 1: Cutting the glass substrate into outer glass 22, middle glass 23 and inner glass 24 according to the set size, and preparing the graphene nanoribbon oriented film at the same time; Step 2: coating the surface of the outer glass 22 with a graphene-silicon dioxide nanocomposite coating by aerosol spraying method, with a coating thickness of 50-80 nm; Step 3: Arrange a graphene nanoribbon directional heat-conducting film 223 on the upper back side of the outer glass 22, with a width of 50-100 nm and a length of 5-10 μm. Use magnetic field-induced electrophoretic deposition technology to achieve directional alignment along the normal direction of the glass. Set a phase change material layer 224 on the lower back side of the outer glass 22; 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; Step 5: Cut and process the profiles of the fixing frame 11 and the fixing frame 21 into the designed dimensions, then install and fix the processed outer glass 22, middle glass 23 and inner glass 24 in the fixing frame 21 in sequence, and evacuate the space between the outer glass 22 and the middle glass 23; Step 6: Connect the electrodes of the graphene nanoribbon directional heat conducting film 223 and the composite dimming film 241 to the controller 3 through the FPC, and control them using the controller 3; Step 7. After the installation is completed, seal the edges of the door and window glass as a whole, apply sealant a second time, cover the air injection port and shape it.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection 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) comprises a second fixed frame (21), an outer layer of glass (22), a middle layer of glass (23) and an inner layer of glass (24); the outer layer of glass (22), the middle layer of glass (23) and the inner layer of glass (24) are all fixedly connected to the inner wall of the second fixed frame (21); the outer layer of glass (22) comprises a hydrophobic layer (221), a first glass substrate (222), a graphene nanoribbon directional heat-conducting film (223) and a phase change material layer (224); the hydrophobic layer (221) is arranged on the outer surface of the first glass substrate (222); the graphene nanoribbon directional heat-conducting film (223) and the phase change material layer (224); The nanobelt directional heat-conducting film (223) and the phase-change material layer (224) are both fixedly connected to the inner side wall of the first glass substrate (222); the phase-change material layer (224) is arranged below the graphene nanobelt directional heat-conducting film (223); the middle glass (23) includes a composite low-emissivity film (231) and a second glass substrate (232); (28) is arranged between the outer glass (22) and the middle glass (23); the composite low-emissivity film (231) is arranged inside (28) and fixedly connected to the outer surface of the second glass substrate (232).

2. The high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 1 is characterized in that: Sealing strips (25) are provided at the connections between the outer glass (22), the middle glass (23) and the inner glass (24) and the second fixing frame (21); a second heat insulation strip (27) is embedded in the outer side of the second fixing frame (21); and a limiting strip (26) is fixedly connected to the inner edge of the (28).

3. The high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 1 is characterized in that: The inner glass (24) comprises a composite dimming film (241), a third glass substrate (242) and a conductive electrode lug (243), wherein the composite dimming film (241) is fixedly connected to the surface of the third glass substrate (242).

4. The high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 3 is characterized in that: 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), and the conductive electrode ears (243) are electrically connected to the controller (3).

5. The high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 1 is characterized in that: The outer frame plate (1) comprises a fixing frame (11), a heat insulation strip (12), heat insulation cotton (13) and a partition rubber strip (14); the inner wall of the fixing frame (11) is connected through the partition rubber strip (14); and the fixing frame (21) is fixedly connected to the inner wall of the partition rubber strip (14).

6. The high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 5 is characterized in that: The thermal insulation cotton (13) is embedded in the inner wall of the fixed frame (11), and the thermal insulation cotton (13) is arranged on the outside of the partition strip (14).

7. The high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to claim 6 is characterized in that: The heat insulation strip 1 (12) is arranged on the outside of the heat insulation cotton (13), and the heat insulation strip 1 (12) is embedded in the inner wall of the fixed frame 1 (11).

8. A method for manufacturing a high-efficiency and energy-saving door and window glass structure based on graphene thermal conductivity regulation, characterized in that: The high-efficiency energy-saving door and window glass structure based on graphene thermal conductivity regulation according to any one of claims 1 to 7 comprises the following steps: S1, cutting the glass substrate according to the set size to obtain the outer layer glass (22), the middle layer glass (23) and the inner layer glass (24), and preparing the graphene nanoribbon oriented film at the same time; S2, coating the surface of the outer glass (22) with a graphene-silicon dioxide nanocomposite coating by an aerosol spray method, with a coating thickness of 50-80 nm; S3, arranging a graphene nanoribbon directional heat-conducting film (223) on the upper back side of the outer glass (22), with a width of 50-100 nm and a length of 5-10 μm, and achieving directional arrangement along the normal direction of the glass by magnetic field-induced electrophoretic deposition technology, and arranging a phase change material layer (224) on the lower back side of the outer glass (22); S4, preparing an Ag / graphene composite low-emissivity film on the surface of the middle glass (23) by magnetron sputtering, and preparing a graphene-liquid crystal film fixed on the surface of the inner glass (24); S5, cutting and processing the profiles of the fixing frame 1 (11) and the fixing frame 2 (21) into the designed size, then sequentially installing and fixing the processed outer glass (22), middle glass (23) and inner glass (24) in the fixing frame 2 (21), and vacuuming the gap between the outer glass (22) and the middle glass (23); The electrodes of S6, the graphene nanoribbon directional heat conducting film (223) and the composite dimming film (241) are connected to the controller (3) via FPC leads and are controlled by the controller (3); S7. After the installation is completed, the edges of the door and window glass will be sealed as a whole, and sealant will be applied for the second time. The air injection port will be covered and shaped.

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