High-reflection glass for automobile window
By stacking and laying three-layer silver layer structures in automotive glass, combined with PVB or SGP films, the problem of insufficient solar thermal energy reflectivity of existing automotive glass is solved, and a higher solar thermal reflectivity and thermal insulation effect is achieved.
Patent Information
- Application Number
- CN202421298394.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The reflectivity of existing automotive glass to solar thermal energy is not excellent enough, resulting in an increase in the internal temperature of the car, reducing comfort and shortening service life, while increasing air conditioning load and fuel consumption.
Design a highly reflective glass for automotive windows, and form a "thin" thin layer by layering and arranging three-layered silver layers in the glass, including a metal base layer, a multi-layer silver layer and a metal isolation layer, combined with the use of PVB or SGP films. -Thick-thin" silver layer structure.
While maintaining the visible light transmittance of 70%, the reflectivity of solar thermal energy is increased to 85%, the insulation capacity is enhanced, and the internal temperature and energy consumption of the car are reduced.
Smart Images
Figure CN222476465U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of solar energy heat insulation, in particular to a high-reflection glass used for automobile windows. Background Art
[0002] Automotive glass plays an important role in large-area lighting in cars, but ordinary automotive glass has high sunlight transmittance and poor UV and infrared light blocking properties. Especially in the hot summer, under the continuous irradiation of sunlight, the surface temperature and internal ambient temperature of the car rise to varying degrees, which not only reduces the comfort of the car, but also greatly shortens the service life of various parts of the car, is prone to failure and even brings danger. In order to maintain comfort, the use of car air conditioning greatly increases the load of the air conditioning and fuel consumption. The emergence of heat-insulating glass film has greatly improved the driving environment of the car, enhanced driving safety and reduced the energy consumption of the car, and has gradually been accepted by the majority of car owners.
[0003] However, in the prior art, automobile glass only includes two silver layers. According to tests, the reflectivity of the above automobile glass to solar heat energy is 72%, and the transmittance of visible light is 70%, which is not good enough to reflect solar heat energy. Utility Model Content
[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-reflection glass for automobile windows to solve the problems mentioned in the above background technology section.
[0005] The utility model is realized by the following technical solutions:
[0006] A high-reflection glass for automobile windows comprises glass, an isolation film, a diaphragm body, an isolation film and glass stacked in sequence from the inside to the outside; the diaphragm body comprises a metal base layer, a first silver layer, a first metal isolation layer, a second silver layer, a second metal isolation layer, a third silver layer, a third metal isolation layer and a metal protective layer stacked in sequence from the inside to the outside.
[0007] Furthermore, the edge regions of the two isolation membranes are attached to each other, so that the membrane body is wrapped between the two isolation membranes.
[0008] Furthermore, the isolation film is a PVB film or a SGP film.
[0009] Furthermore, the width of the edge area is 6mm-8mm.
[0010] Furthermore, the metal base layer is a zinc oxide layer.
[0011] Furthermore, the first to third metal isolation layers are all nickel oxide layers.
[0012] Furthermore, the metal protective layer is a titanium oxide layer.
[0013] Furthermore, the ratio of the thickness of the second silver layer to the thickness of the first silver layer is 2.4-1.5:1.
[0014] Furthermore, the ratio of the thickness of the second silver layer to the thickness of the third silver layer is 2.4-1.5:1.
[0015] The beneficial effects of the utility model are as follows: a high-reflection glass for automobile windows comprises glass, an isolation film, a diaphragm body, an isolation film and glass which are sequentially stacked from the inside to the outside; the diaphragm body comprises a metal base layer, a first silver layer, a first metal isolation layer, a second silver layer, a second metal isolation layer, a third silver layer, a third metal isolation layer and a metal protective layer which are sequentially stacked from the inside to the outside. The utility model uses three layers of silver layers arranged at intervals to increase the reflectivity of the high-reflection glass to 85% of solar heat energy while maintaining a visible light transmittance of 70%, thereby increasing the reflectivity of the solar film and enhancing the heat insulation capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model.
[0017] Figure 2 It is a schematic diagram of the microstructure cross section of the diaphragm body of the utility model.
[0018] The above drawings include the following reference numerals:
[0019] 1. Glass; 2. Isolation film; 3. Diaphragm body; 31. Metal base layer; 32. First silver layer; 33. First metal isolation layer; 34. Second silver layer; 35. Second metal isolation layer; 36. Third silver layer; 37. Third metal isolation layer; 38. Metal protective layer; D. Edge area. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.
[0021] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0022] Reference Figure 1 As shown, a high-reflection glass for automobile windows comprises glass 1, an isolation film 2, a diaphragm body 3, an isolation film 2 and glass 1 which are sequentially stacked from the inside to the outside; the diaphragm body 3 comprises a metal base layer 31, a first silver layer 32, a first metal isolation layer 33, a second silver layer 34, a second metal isolation layer 35, a third silver layer 36, a third metal isolation layer 37 and a metal protective layer 38 which are sequentially stacked from the inside to the outside. The utility model uses three layers of silver layers arranged at intervals to increase the reflectivity of solar heat energy of the high-reflection glass to 85% while maintaining the transmittance of visible light at 70%, thereby increasing the reflectivity of the solar film and enhancing the heat insulation capacity.
[0023] The edge regions D of the two isolation films 2 are attached to each other, so that the diaphragm body 3 is wrapped between the two isolation films 2, thereby preventing the first silver layer 32, the second silver layer 34 and the third silver layer 36 from being oxidized. This structure can better protect the silver layer.
[0024] Preferably, the width of the edge region D is 6 mm to 8 mm, and the extension width of the edge region D can prevent water vapor from penetrating to the silver layer when the automobile glass is wetted by external rain. Preferably, the thickness of the glass 1 is 1.8 mm.
[0025] Preferably, the isolation film 2 is a PVB film or a SGP film. In addition to protecting the silver layer from oxidation, the PVB film or the SGP film can also make the glass 1 have a higher bonding ability and a stronger tear resistance, thereby preventing the glass 1 from breaking and scattering.
[0026] The utility model uses zinc oxide material to make the metal base layer 31. The zinc oxide layer has a high transmittance in the visible light range, which allows the visible light part of the sunlight to pass through the film and enter the room to provide lighting. The zinc oxide layer usually has high chemical stability and corrosion resistance. It is connected to the glass 1 through the zinc oxide layer, which helps to enhance the overall durability and service life of the solar film. In addition, zinc oxide is a non-toxic and environmentally friendly material. Using it as a component of the solar film can improve the environmental protection and safety of the product.
[0027] The utility model adopts nickel oxide material to make the metal isolation layer. The nickel oxide layer can selectively reflect infrared rays in sunlight and wavelengths that generate heat energy, effectively block the heat brought by these wavelengths, and reduce the transfer of heat through the glass 1.
[0028] The utility model uses titanium oxide material to make the metal protective layer 38. The titanium oxide layer can reflect and absorb ultraviolet rays, visible light and infrared rays in the solar spectrum, while maintaining a certain light transmittance, reducing the damage caused by direct sunlight. In addition, titanium oxide is a non-toxic and harmless material, and the solar film using the titanium oxide layer is more environmentally friendly. Compared with other materials, the titanium oxide layer is not easy to produce the problem of glare, ensuring the safety of automobile driving or the comfort of indoor personnel.
[0029] The ratio of the thickness of the second silver layer 34 to the thickness of the first silver layer 32 is 2.4-1.5: 1. The ratio of the thickness of the second silver layer 34 to the thickness of the third silver layer 36 is 2.4-1.5: 1. Thus, the three silver layers are arranged in a "thin-thick-thin" manner.
[0030] The second silver layer 34 is a thick silver layer that can more effectively reflect and absorb infrared rays in the solar spectrum, thereby significantly reducing the transfer of heat through the glass 1. This structure can maximize the silver layer's reflection and absorption effect on infrared rays, making the solar film have higher heat insulation efficiency.
[0031] The thinner first silver layer 32 and third silver layer 36 on both sides can reduce the blocking of visible light while maintaining a certain heat insulation performance, so as to keep sufficient light in the car or room. The first silver layer 32 and third silver layer 36 have good light transmittance, which helps to reduce the impact of the solar film on the light in the car or room, and provide a more natural and bright indoor environment.
[0032] Compared with the design of a single-thickness silver layer, the "thin-thick-thin" arrangement can reduce material costs to a certain extent. This is because the thinner first silver layer 32 and the third silver layer 36 on both sides use less material, while the second silver layer 34 in the middle, although using a larger amount of material, has a high heat insulation performance and can reduce dependence on other materials.
[0033] As a preferred solution, the thickness of the second silver layer 34 is between 11.5 nanometers and 12.5 nanometers.
[0034] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A high-reflection glass for automobile windows, characterized in that: It comprises glass (1), an isolation film (2), a diaphragm body (3), an isolation film (2) and glass (1) which are sequentially stacked from the inside to the outside; The diaphragm body (3) comprises a metal base layer (31), a first silver layer (32), a first metal isolation layer (33), a second silver layer (34), a second metal isolation layer (35), a third silver layer (36), a third metal isolation layer (37) and a metal protection layer (38) which are sequentially stacked from the inside to the outside.
2. The high-reflection glass for automobile windows according to claim 1, characterized in that: The edge areas (D) of the two isolation films (2) are bonded to each other, so that the diaphragm body (3) is wrapped between the two isolation films (2).
3. The high-reflection glass for automobile windows according to claim 1, characterized in that: The isolation film (2) is a PVB film or a SGP film.
4. The high-reflection glass for automobile windows according to claim 2, characterized in that: The width of the edge region (D) is 6 mm to 8 mm.
5. The high-reflection glass for automobile windows according to claim 1, characterized in that: The metal base layer (31) is a zinc oxide layer.
6. The high-reflection glass for automobile windows according to claim 1, characterized in that: The first to third metal isolation layers (37) are all nickel oxide layers.
7. The high-reflection glass for automobile windows according to claim 1, characterized in that: The metal protective layer (38) is a titanium oxide layer.
8. The high-reflection glass for automobile windows according to claim 1, characterized in that: The ratio of the thickness of the second silver layer (34) to the thickness of the first silver layer (32) is 2.4-1.5:
1.
9. The high-reflection glass for automobile windows according to claim 7, characterized in that: The ratio of the thickness of the second silver layer (34) to the thickness of the third silver layer (36) is 2.4-1.5:1.