Thin-cavity hollow glass

Abstract

The invention relates to the technical field of glass, and discloses thin-cavity hollow glass which comprises outer-layer glass, and a coating layer of the outer-layer glass is located on the inner side; the inner-layer glass and the outer-layer glass are arranged in parallel at a preset interval; the coating layer of the inner-layer glass is positioned on the inner side; a sealed cavity is formed between the outer-layer glass and the inner-layer glass; the sealing cavity is filled with gas; the distance between the outer side of the outer-layer glass and the inner side of the inner-layer glass is smaller than or equal to 23 mm, and the thickness of the sealing cavity is larger than or equal to 6 mm. The problems that an existing hollow glass window system is heavy and inconvenient to transport and install due to the fact that the overall thickness of existing hollow glass is large are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of glass, in particular to a thin cavity hollow glass. BACKGROUND

[0002] With the rapid development of society, the building industry is more and more strict on the quality of people's living environment, and glass, as an indispensable element in the field of building, directly affects the quality of people's living environment and the overall quality of life.

[0003] In the related art, in order to ensure the heat transfer performance and shading performance of the hollow glass, the thickness of the intermediate cavity of the hollow glass is usually large, resulting in a large overall thickness, and the application to the hollow glass window system is heavy, which is not convenient for transportation and installation. SUMMARY

[0004] Therefore, the present application provides a thin cavity hollow glass to solve the problem of large overall thickness, heavy weight, inconvenient transportation and installation of the existing hollow glass.

[0005] The present application provides a thin cavity hollow glass, comprising: An outer layer glass, the film layer of the outer layer glass is located on the inner side; An inner layer glass, which is parallel to the outer layer glass and is arranged at a preset distance; the film layer of the inner layer glass is located on the inner side; a sealed cavity is formed between the outer layer glass and the inner layer glass; the sealed cavity is filled with gas; The distance between the outer side of the outer layer glass and the inner side of the inner layer glass is less than or equal to 23mm, and the thickness of the sealed cavity is greater than or equal to 6mm.

[0006] In an optional embodiment, further comprising: A first intermediate glass, which is parallelly arranged between the outer layer glass and the inner layer glass, and separates the sealed cavity into a first cavity and a second cavity; the film layer of the first intermediate glass is located on the inner side.

[0007] In an optional embodiment, further comprising: A first intermediate glass, which is parallelly arranged between the outer layer glass and the inner layer glass, and separates the sealed cavity into a first cavity and a second cavity; the film layer of the first intermediate glass is located on the outer side.

[0008] In an optional embodiment, the outer layer glass is a double-silver Low-E glass, the inner layer glass is a silver-free Low-E glass, and the first intermediate glass is a double-silver Low-E glass. And / or, the thickness of the outer layer glass and the inner layer glass is 2mm-4mm, and the thickness of the first cavity and the second cavity is 5mm-9mm.

[0009] In an alternative embodiment, further comprising a second intermediate glass and a third intermediate glass; the second intermediate glass and the third intermediate glass are arranged in parallel and spaced apart from each other between the outer layer glass and the inner layer glass from outside to inside, and divide the sealed cavity into a third cavity, a fourth cavity and a fifth cavity.

[0010] In an alternative embodiment, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is double-silver Low-E glass or silver-free Low-E glass, the coating layer of the second intermediate glass is located on the inner side, and the coating layer of the third intermediate glass is located on the outer side. Or, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is double-silver Low-E glass or silver-free Low-E glass, the coating layer of the second intermediate glass is located on the inner side, and the coating layer of the third intermediate glass is located on the outer side.

[0011] In an alternative embodiment, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is double-silver Low-E glass or silver-free Low-E glass, the coating layer of the second intermediate glass is located on the outer side, and the coating layer of the third intermediate glass is located on the inner side. Or, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is double-silver Low-E glass or silver-free Low-E glass, the coating layer of the second intermediate glass is located on the outer side, and the coating layer of the third intermediate glass is located on the outer side.

[0012] In an alternative embodiment, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is white glass, the coating layer of the second intermediate glass is located on the inner side. Or, the outer layer glass is double-silver Low-E glass, the inner layer glass is silver-free Low-E glass, the second intermediate glass is double-silver Low-E glass, and the third intermediate glass is white glass, the coating layer of the second intermediate glass is located on the outer side.

[0013] In an alternative embodiment, the thickness of the outer glass, the second intermediate glass and the inner glass is 2mm-4mm, the thickness of the third intermediate glass is 1mm-3mm, the thickness of the third cavity and the fourth cavity is 2mm-4mm, and the thickness of the fifth cavity is 3mm-7mm.

[0014] In an alternative embodiment, the gas comprises at least one of air, argon, krypton and xenon; And / or, the outer glass is double silver Low-E glass, and the inner glass is silver-free Low-E glass. And / or, the thickness of the outer glass and the inner glass is 2mm-4mm.

[0015] The technical scheme of the present application has at least the following advantages: 1. The present application limits the thickness of the hollow glass to be less than or equal to 23mm, and the thickness of the sealed cavity to be greater than or equal to 6mm, thereby reducing the weight of the building itself, facilitating transportation and installation, while ensuring the heat preservation effect, heat insulation effect and noise reduction effect.

[0016] 2. The present application fills the sealed cavity with gas, thereby increasing the internal pressure of the hollow glass, reducing the pressure difference between the internal pressure and the atmospheric pressure, reducing the stress generated inside the hollow glass, and improving the service life.

[0017] 3. The present application provides various types of hollow glass, each having different arrangement and composition structure, different heat transfer coefficient, shading coefficient and cost, so that the optimal structure can be selected according to the requirements.

[0018] 4. The present application uses double silver Low-E glass, silver-free Low-E glass and white glass, which can reduce the reflection of visible light, provide better natural lighting effect, make the indoor space brighter, and is suitable for various types of buildings, meeting the performance requirements of glass in different occasions. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 Structure diagram of the single-cavity hollow glass of the embodiment of the present application; Figure 2A structure schematic view of a first three-glass two-cavity hollow glass according to an embodiment of the present application; Figure 3 A structure schematic view of a second three-glass two-cavity hollow glass according to an embodiment of the present application; Figure 4 A structure schematic view of a first four-glass three-cavity hollow glass according to an embodiment of the present application; Figure 5 A structure schematic view of a third four-glass three-cavity hollow glass according to an embodiment of the present application; Figure 6 A structure schematic view of a fifth four-glass three-cavity hollow glass according to an embodiment of the present application; Figure 7 A structure schematic view of a sixth four-glass three-cavity hollow glass according to an embodiment of the present application.

[0021] Explanation of reference signs: 1, outer glass; 2, coating layer; 3, inner glass; 4, sealed cavity; 5, first intermediate glass; 6, first cavity; 7, second cavity; 8, second intermediate glass; 9, third intermediate glass; 10, third cavity; 11, fourth cavity; 12, fifth cavity. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0026] The embodiments of the present application are described below in combination with Figures 1 to 7

[0027] According to the embodiments of the present application, a thin cavity hollow glass is provided, comprising: an outer glass 1, a film-coated layer 2 of the outer glass 1 being located on the inner side; an inner glass 3 being parallel to the outer glass 1 and being arranged at a preset distance; a film-coated layer 2 of the inner glass 3 being located on the inner side; a sealed cavity 4 being formed between the outer glass 1 and the inner glass 3; the sealed cavity 4 being filled with gas; the distance between the outer side of the outer glass 1 and the inner side of the inner glass 3 being less than or equal to 23mm, and the thickness of the sealed cavity 4 being greater than or equal to 6mm.

[0028] It should be noted that the inner side refers to the side facing the indoor, and the outer side refers to the side facing the outdoor.

[0029] In the present embodiment, the outer glass 1 and the inner glass 3 are arranged at a distance to form a sealed cavity 4, thereby forming the form of single-cavity hollow glass. By filling the sealed cavity 4 with gas, the internal pressure of the hollow glass is increased, the pressure difference between the atmospheric pressure is reduced, the stress generated in the hollow glass is reduced, the service life is improved, and the thickness of the formed hollow glass is less than or equal to 23mm, and the thickness of the sealed cavity 4 is greater than or equal to 6mm. It can be applied to the outer window of the building, thereby reducing the gravity of the building itself, facilitating transportation and installation, having good heat preservation effect, heat insulation effect and noise reduction effect, and having obvious energy saving effect when used.

[0030] In specific applications, for example, Figure 1 ​As shown, the single-cavity hollow glass of the embodiment has an outer glass 1 of double-silver Low-E glass and an inner glass 3 of non-silver Low-E glass, and the gas is air, argon, krypton, xenon, or a mixture of air and argon or a mixture of air and krypton or a mixture of air and argon and krypton, and the thickness of the outer glass 1 and the inner glass 3 is 2mm-4mm. The thermal performance, i.e. the heat transfer coefficient K value and the solar shading coefficient SC value, of the single-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thicknesses is compared, and the comparison results are shown in Table 1 below: Table 1 Thermal performance of single-cavity hollow glass

[0031] It should be noted that A refers to air, Ar refers to Ar argon, Kr refers to krypton, and Xe refers to xenon. 15mmA refers to a sealed cavity 4 with a thickness of 15mm and filled with air, and 15mm(10%A+90%Ar) refers to a sealed cavity 4 with a thickness of 15mm and filled with a mixture of 10% air and 90% argon.

[0032] As can be seen from Table 1, the outer glass 1 of the single-cavity hollow glass is selected to be 3mm double-silver Low-E glass (coating layer 2 is located on the inner side), the inner glass 3 is selected to be 3mm non-silver Low-E glass (coating layer 2 is located on the inner side), and the thickness of the sealed cavity 4 is selected to be 15mm or 17mm. As can be seen from the table, in the single-cavity hollow glass, the single-cavity hollow glass can reduce the heat transfer coefficient and the solar shading coefficient, thereby improving the heat preservation effect, the heat insulation effect and the noise reduction effect. Among them, the single-cavity hollow glass with specifications of 3mm double-silver Low-E glass (coating layer 2 is located on the inner side) + 15mm Xe + 3mm non-silver Low-E glass (coating layer 2 is located on the inner side) and 3mm double-silver Low-E glass (coating layer 2 is located on the inner side) + 17mm Xe + 3mm non-silver Low-E glass (coating layer 2 is located on the inner side) has better comprehensive performance of heat transfer coefficient and solar shading coefficient. The reason is that the thermal conductivity of xenon is lower than that of other inert gases, which is only 0.0052 W / (m·K), and the density of xenon is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a decrease in the heat transfer coefficient, while the absorption and reflection ability of xenon to solar radiation is poor, which cannot effectively block the solar radiation from entering the room through the glass, thereby resulting in a larger solar shading coefficient. The heat transfer coefficient and the solar shading coefficient of the hollow glass with these two structure specifications are the same in size because the thickness of the sealed cavity 4 is relatively large and the change is relatively small.

[0033] In one embodiment, as Figure 2As shown, the thin cavity insulating glass further comprises: a first intermediate glass 5, which is arranged in parallel between the outer glass 1 and the inner glass 3, and separates the sealed cavity 4 into a first cavity 6 and a second cavity 7; and the film-coated layer 2 of the first intermediate glass 5 is located on the inner side.

[0034] In the embodiment, the first three-glass two-cavity insulating glass is provided, the first intermediate glass 5 is arranged between the outer glass 1 and the inner glass 3, and the sealed cavity 4 is separated into the first cavity 6 and the second cavity 7, thereby forming the structure of the three-glass two-cavity insulating glass. By filling the first cavity 6 and the second cavity 7 with gas, the internal pressure of the insulating glass is increased, the pressure difference between the internal pressure and the atmospheric pressure is reduced, the stress generated in the insulating glass is reduced, and the service life is improved. At the same time, the overall thickness of the formed insulating glass is less than or equal to 23 mm, and the total thickness of the first cavity 6 and the second cavity 7 is greater than or equal to 6 mm. By increasing the first intermediate glass 5, and the film-coated layer 2 of the first intermediate glass 5 being located on the inner side, the heat and sound insulation effects are further improved, the overall thickness is reduced, and the insulating glass can be applied to the outer window of a building, thereby reducing the gravity of the building itself, and having good heat preservation, heat insulation and noise reduction effects, and obvious energy-saving effect in use.

[0035] In specific applications, the three-glass two-cavity insulating glass provided in the embodiment has the following features: the outer glass 1 is double-silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the first intermediate glass 5 is double-silver Low-E glass, and the film-coated layer 2 of the first intermediate glass 5 is located on the inner side; the thickness of the outer glass 1 and the inner glass 3 is 2 mm-4 mm, and the thickness of the first cavity 6 and the second cavity 7 is 5 mm-9 mm; the gas is air, argon, krypton, xenon, or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton. The thermal performance, i.e. the heat transfer coefficient K value and the solar shading coefficient SC value, of the three-glass two-cavity insulating glass (glass size: length x width: 2000 mm x 1500 mm) with different thicknesses is compared, and the comparison results are shown in Tables 2-3. Table 2 Thermal performance of three-glass two-cavity insulating glass

[0036] From Table 2, the outer glass 1 of the three-glass two-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the first middle glass 5 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the inner glass 3 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the first cavity 6 and the second cavity 7 is the same; when the first cavity 6 and the second cavity 7 are filled with air, the heat transfer coefficient of the three-glass two-cavity hollow glass is greater than 1W / (m²·K), and the heat transfer coefficient of the three-glass two-cavity hollow glass of the remaining specifications is less than 1W / (m²·K); when the first cavity 6 and the second cavity 7 are filled with krypton or argon, the heat transfer coefficient of the three-glass two-cavity hollow glass is significantly reduced, but the solar shading coefficient increases; when the thickness of the first cavity 6 and the thickness of the second cavity 7 are equal, the heat transfer coefficient and the solar shading coefficient are smaller than when the thickness of the first cavity 6 and the thickness of the second cavity 7 are not equal, because the first cavity 6 and the second cavity 7 work together, the equal thickness of the first cavity 6 and the second cavity 7 can provide uniform thermal resistance; when the thickness of the first cavity 6 is greater than the thickness of the second cavity 7, the heat transfer coefficient and the solar shading coefficient change little; overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance, among which the performance of the three-glass two-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is better.

[0037] Table 3 Thermal performance of three-glass two-cavity hollow glass

[0038] From Table 3, the outer glass 1 of the three-glass two-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the first middle glass 5 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), and the inner glass 3 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thickness of the first cavity 6 and the second cavity 7 is the same, and when the first cavity 6 and the second cavity 7 are filled with air, the heat transfer coefficient is less than 1 W / (m2·K); when the first cavity 6 and the second cavity 7 are filled with krypton or argon, the heat transfer coefficient is significantly reduced, but the solar shading coefficient increases; when the thickness of the first cavity 6 is equal to the thickness of the second cavity 7, the heat transfer coefficient and the solar shading coefficient change little compared with the case that the thickness of the first cavity 6 is greater than the thickness of the second cavity 7, because the thickness of the first cavity 6 and the second cavity 7 changes too small; when the thickness of the first cavity 6 is greater than the thickness of the second cavity 7 or when the thickness of the first cavity 6 is less than the thickness of the second cavity 7, the heat transfer coefficient and the solar shading coefficient change little, but the overall heat preservation, heat insulation and noise reduction performance can be effectively improved. Among them, the three-glass two-cavity hollow glass with the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7.5mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7.5mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) and 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 8mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0039] As a convertible embodiment, it can also be, for example, Figure 3The thin cavity hollow glass also comprises: a first intermediate glass 5, which is arranged in parallel between the outer glass 1 and the inner glass 3 and separates the sealed cavity 4 into a first cavity 6 and a second cavity 7; and the film-coated layer 2 of the first intermediate glass 5 is located on the outer side. In this embodiment, a second three-glass two-cavity hollow glass is provided, the first intermediate glass 5 is arranged between the outer glass 1 and the inner glass 3 and separates the sealed cavity 4 into the first cavity 6 and the second cavity 7. Through the structure of the three-glass two-cavity hollow glass, the internal pressure of the hollow glass is increased by filling the first cavity 6 and the second cavity 7 with gas, the pressure difference between the hollow glass and the atmospheric pressure is reduced, the stress generated in the hollow glass is reduced, the service life is improved, the overall thickness of the hollow glass is less than or equal to 23 mm, the total thickness of the first cavity 6 and the second cavity 7 is greater than or equal to 6 mm, the heat and sound insulation effects are further improved by increasing the first intermediate glass 5 and the film-coated layer 2 of the first intermediate glass 5 being located on the outer side, the overall thickness is reduced, the hollow glass can be applied to the outer window of a building, the gravity of the building itself is reduced, and the building has good heat preservation, heat insulation and noise reduction effects, and the energy saving effect is obvious during use.

[0040] In specific applications, the three-glass two-cavity hollow glass of this embodiment, the outer glass 1 is double-silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the first intermediate glass 5 is double-silver Low-E glass, and the film-coated layer 2 of the first intermediate glass 5 is located on the outer side; the thickness of the outer glass 1 and the inner glass 3 is 2 mm-4 mm, and the thickness of the first cavity 6 and the second cavity 7 is 5 mm-9 mm; the gas is air, argon, krypton, xenon, or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton. The thermal performance, i.e. heat transfer coefficient K value and solar shading coefficient SC value, of the three-glass two-cavity hollow glass (glass size: length x width: 2000 mm x 1500 mm) with different thicknesses is compared, and the comparison results are shown in Tables 4-5 as follows: Table 4 Thermal performance of three-glass two-cavity hollow glass

[0041] From Table 4, the outer glass 1 of the three-glass two-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the first intermediate glass 5 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), and the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thickness of the first cavity 6 and the second cavity 7 is the same. When the cavities are filled with krypton or argon, the heat transfer coefficient is significantly reduced, but the solar shading coefficient increases. When the thickness of the first cavity 6 is 5mm or 6mm, the thickness of the second cavity 7 is 9mm or 8mm, and the first cavity 6 and the second cavity 7 are filled with air, argon or a mixture of air and argon, and the first cavity 6 and the second cavity 7 are filled with air, the heat transfer coefficient is greater than 1 W / (m²·K). The heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K), which can effectively improve the heat preservation, heat insulation and noise reduction performance. Among them, the three-glass two-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 6mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 8mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0042] Table 5 Thermal performance of three-glass two-cavity hollow glass

[0043] From Table 5, the outer glass 1 of the three-glass two-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the first intermediate glass 5 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), and the inner glass 3 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thickness of the first cavity 6 and the second cavity 7 is the same. When the first cavity 6 and the second cavity 7 are filled with air, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K). When the first cavity 6 and the second cavity 7 are filled with krypton or argon, the heat transfer coefficient is significantly reduced, but the solar shading coefficient increases. Overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance. Among them, the three-glass two-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 8mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0044] As can be seen from Tables 2 to 5, compared with the three-glass two-cavity hollow glass in which the coating layer 2 of the first intermediate glass 5 is located at the outer side, the heat transfer coefficient and the solar shading coefficient of the three-glass two-cavity hollow glass in which the coating layer 2 of the first intermediate glass 5 is located at the inner side are smaller. The reason is that the first intermediate glass 5 (the coating layer 2 is located at the inner side) and the outer glass 1 (the coating layer 2 is located at the inner side) form a double-layer heat insulation barrier. The heat reaches the indoor through a longer path and the radiation heat reflection efficiency of each glass layer is higher, thereby reducing the heat entering the indoor. In addition, the coating layer 2 of the first intermediate glass 5 (located at the inner side) and the coating layer 2 of the outer glass 1 are located in the second cavity 7 and the first cavity 6 respectively, that is, in different gas spacing layers. The gas layers are independent and stable, thereby resulting in low heat conduction efficiency. The coating layer 2 of the first intermediate glass 5 (located at the outer side) and the coating layer 2 of the outer glass 1 (located at the inner side) are both located in the first cavity 6, that is, in the same gas spacing layer, thereby resulting in enhanced gas convection in the cavity and enhanced heat conduction efficiency, thereby weakening the heat preservation and insulation effect. Therefore, the heat preservation, insulation and noise reduction performance of the three-glass two-cavity hollow glass in which the coating layer 2 of the first intermediate glass 5 is located at the inner side is relatively better.

[0045] In one embodiment, the outer glass 1 is a double-silver Low-E glass, the inner glass 3 is a non-silver Low-E glass, and the first intermediate glass 5 is a double-silver Low-E glass.

[0046] In this embodiment, since the double-silver Low-E glass has high visible light transmittance, it can ensure bright and transparent indoor, reduce dependence on artificial lighting, reduce energy consumption, improve indoor visual comfort, and has good heat insulation performance, can block solar heat energy from entering the indoor, and has energy saving effect. In addition, the double-silver Low-E glass has low heat transfer coefficient, which can reduce the loss of indoor heat, so the outer glass 1 and the first intermediate glass 5 adopt double-silver Low-E glass. The non-silver Low-E glass has low surface emissivity, which can effectively reflect the heat radiation in the room, reduce heat transfer and energy consumption. Therefore, the non-silver Low-E film is placed on the inner side of the first intermediate glass 5, which has good shading effect, and cooperates with each other to improve the overall heat preservation, insulation and noise reduction performance.

[0047] In one embodiment, the thickness of the outer glass 1 and the inner glass 3 is 2mm-4mm, and the thickness of the first cavity 6 and the second cavity 7 is 5mm-9mm.

[0048] In this embodiment, the thickness of the outer glass 1 and the inner glass 3 is 2mm-4mm, and the thickness of the first cavity 6 and the second cavity 7 is 5mm-9mm, which can ensure the heat preservation, insulation and noise reduction performance, and avoid the overall thickness being too large, thereby reducing the self-weight.

[0049] As the transformable embodiment, the thin cavity insulating glass further comprises a second intermediate glass 8 and a third intermediate glass 9; the second intermediate glass 8 and the third intermediate glass 9 are arranged in parallel and spaced apart from each other between the outer glass 1 and the inner glass 3 from outside to inside, and divide the sealed cavity 4 into a third cavity 10, a fourth cavity 11 and a fifth cavity 12. In this embodiment, the second intermediate glass 8 and the third intermediate glass 9 are arranged between the outer glass 1 and the inner glass 3, and the sealed cavity 4 is divided into the third cavity 10, the fourth cavity 11 and the fifth cavity 12, thereby forming a structure of four-glass three-cavity insulating glass. By filling the third cavity 10, the fourth cavity 11 and the fifth cavity 12 with gas, the internal pressure of the insulating glass is increased, the pressure difference between the internal pressure and the atmospheric pressure is reduced, the stress generated in the insulating glass is reduced, and the service life is improved. At the same time, the overall thickness of the formed insulating glass is less than or equal to 23 mm, the total thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is greater than or equal to 6 mm, and by increasing the second intermediate glass 8 and the third intermediate glass 9, the film-coated layer 2 of the second intermediate glass 8 is located on the inner side, and the film-coated layer 2 of the third intermediate glass 9 is located on the inner side, the heat and sound insulation effects are further improved, the overall thickness is reduced, and the insulating glass can be applied to the outer window of a building, thereby reducing the gravity of the building itself and having good heat preservation, heat insulation and noise reduction effects, and the energy saving effect is obvious during use.

[0050] In an embodiment, the outer glass 1 is double-silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the second intermediate glass 8 is double-silver Low-E glass, and the third intermediate glass 9 is double-silver Low-E glass or silver-free Low-E glass. The film-coated layer 2 of the second intermediate glass 8 is located on the inner side, and the film-coated layer 2 of the third intermediate glass 9 is located on the inner side.

[0051] In this embodiment, as shown in Figure 4 , a first four-glass three-cavity insulating glass is provided. The outer glass 1 and the second intermediate glass 8 adopt double-silver Low-E glass, which can ensure bright and transparent indoor light, reduce dependence on artificial lighting, reduce energy consumption, improve indoor visual comfort, reduce indoor heat loss, save energy and reduce consumption. The third intermediate glass 9 is double-silver Low-E glass or silver-free Low-E glass, which can be selected according to actual needs. The inner glass 3 adopts silver-free Low-E glass, which can effectively reflect indoor heat radiation, reduce heat transfer, reduce energy consumption, and has good sun-shading effect. At the same time, the film-coated layer 2 of the second intermediate glass 8 is located on the inner side, and the film-coated layer 2 of the third intermediate glass 9 is located on the inner side, which cooperates with each other to improve the overall heat preservation, heat insulation and noise reduction performance.

[0052] In a specific application, the four-glass three-cavity hollow glass of the embodiment has the following configurations: the outer glass 1 is double-silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the second intermediate glass 8 is double-silver Low-E glass, the third intermediate glass 9 is double-silver Low-E glass, the film-coated layer 2 of the second intermediate glass 8 is located on the inner side, and the film-coated layer 2 of the third intermediate glass 9 is located on the inner side; the thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are all 2 mm-4 mm, the thickness of the third intermediate glass 9 is 1 mm-3 mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2 mm-4 mm, and the thickness of the fifth cavity 12 is 3 mm-7 mm; the gas is air, argon, krypton, xenon, or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton. The thermal performance, i.e., the heat transfer coefficient K value and the solar shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000 mm x 1500 mm) with different thicknesses is compared, and the comparison results are shown in Tables 6 and 7 as follows: Table 6 Thermal performance of four-glass three-cavity hollow glass

[0053] As shown in Table 6, the outer glass 1 of the four-glass three-cavity hollow glass is selected to be 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side), the second intermediate glass 8 is selected to be 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side), the third intermediate glass 9 is selected to be 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side), the outer glass 1 is selected to be 3 mm silver-free Low-E glass, and the overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same; the four-glass three-cavity hollow glass with the third cavity 10 having a thickness of 4 mm, the fourth cavity 11 having a thickness of 3 mm and the fifth cavity 12 having a thickness of 4 mm has a heat transfer coefficient and a solar shading coefficient that are not much different from those of the four-glass three-cavity hollow glass with the third cavity 10 having a thickness of 3 mm, the fourth cavity 11 having a thickness of 5 mm and the fifth cavity 12 having a thickness of 3 mm; when the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient is relatively large, all being greater than 1 W / (m²·K), and the heat transfer coefficients of other specifications of hollow glass are all less than 1 W / (m²·K); overall, the four-glass three-cavity hollow glass can effectively improve the heat preservation, heat insulation and noise reduction performance, among which the four-glass three-cavity hollow glass with the specification of 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side) + 4 mm Xe + 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side) + 3 mm Xe + 3 mm double-silver Low-E glass (the film-coated layer 2 is located on the inner side) + 4 mm Xe + 3 mm silver-free Low-E glass (the film-coated layer 2 is located on the inner side) has better performance.

[0054] Table 7 Thermal performance of four-bottle three-cavity hollow glass

[0055] As can be seen from Table 7, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the inner side), the third intermediate glass 9 is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the inner side), the outer glass 1 is selected as 3mm silver-free Low-E glass, the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; the thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is 4mm; when the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with air, the heat transfer coefficient is larger than 1 W / (m²·K), and the heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K); overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance, among which, the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (the coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (the coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (the coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (the coating layer 2 is located on the inner side) has better performance.

[0056] As a convertible embodiment, the outer glass 1 can be double silver Low-E glass, the inner glass 3 can be silver-free Low-E glass, the second intermediate glass 8 can be double silver Low-E glass, the third intermediate glass 9 can be white glass, and the coating layer 2 of the second intermediate glass 8 can be located on the inner side. In this embodiment, a second four-bottle three-cavity hollow glass is provided, which uses double silver Low-E glass for the outer glass 1 and the second intermediate glass 8 to ensure bright and transparent indoor light, reduce dependence on artificial lighting, reduce energy consumption, improve indoor visual comfort, reduce indoor heat loss, save energy and reduce consumption. Under this premise, the third intermediate glass 9 uses white glass to reduce cost; and the inner glass 3 uses silver-free Low-E glass to effectively reflect indoor heat radiation, reduce heat transfer, reduce energy consumption, and has good shading effect. At the same time, the coating layer 2 of the second intermediate glass 8 is located on the inner side, which cooperates with each other to improve the overall heat preservation, heat insulation and noise reduction performance.

[0057] In a specific application, the four-glass three-cavity hollow glass of the embodiment has the outer glass 1 being double-silver Low-E glass, the inner glass 3 being silver-free Low-E glass, the second intermediate glass 8 being double-silver Low-E glass, and the third intermediate glass 9 being silver-free Low-E glass or white glass. The coating layer 2 of the second intermediate glass 8 is located at the inner side. When the third intermediate glass 9 is silver-free Low-E glass, the coating layer 2 of the third intermediate glass 9 is located at the inner side. The thicknesses of the outer glass 1, the second intermediate glass 8, and the inner glass 3 are all 2 mm-4 mm. The thickness of the third intermediate glass 9 is 1 mm-3 mm. The thicknesses of the third cavity 10 and the fourth cavity 11 are both 2 mm-4 mm. The thickness of the fifth cavity 12 is 3 mm-7 mm. The gas is air, argon, krypton, xenon, or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon, and krypton. The thermal performance, i.e., the heat transfer coefficient K value and the solar shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000 mm x 1500 mm) with different thicknesses is compared. The comparison results are shown in Tables 8-12. Table 8 Thermal performance of four-glass three-cavity hollow glass

[0058] As shown in Table 8, the outer glass 1 of the four-glass three-cavity hollow glass is 3 mm double-silver Low-E glass (the coating layer 2 is located at the inner side). The second intermediate glass 8 is 3 mm double-silver Low-E glass (the coating layer 2 is located at the inner side). The third intermediate glass 9 is 3 mm silver-free Low-E glass (the coating layer 2 is located at the inner side) or 3 mm white glass. The inner glass 3 is 3 mm silver-free Low-E glass (the coating layer is located at the inner side). The overall thicknesses of the third cavity 10, the fourth cavity 11, and the fifth cavity 12 are the same. Compared with the third intermediate glass 9 being white glass, the third intermediate glass 9 being silver-free Low-E glass (the coating layer 2 is located at the inner side) has smaller heat transfer coefficient and solar shading coefficient. The reason is that silver-free Low-E glass generally has excellent heat insulation performance, and the thermal conductivity of silver-free Low-E glass is significantly better than that of white glass, which has good heat preservation and insulation performance and can block solar heat from entering the room. Overall, it can effectively improve the heat preservation, insulation, and noise reduction performance. Among them, the four-glass three-cavity hollow glass with the specification of 3 mm double-silver Low-E glass (the coating layer 2 is located at the inner side) + 4 mm Xe + 3 mm double-silver Low-E glass (the coating layer 2 is located at the inner side) + 3 mm Xe + 3 mm silver-free Low-E glass (the coating layer 2 is located at the inner side) + 4 mm Xe + 3 mm silver-free Low-E glass (the coating layer 2 is located at the inner side) has better performance.

[0059] Table 9 Thermal performance of four-glass three-cavity hollow glass

[0060] As shown in Table 9, when the outer glass 1 of the four-glass three-cavity hollow glass is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third intermediate glass 9 is 2mm white glass or 2mm silver-free Low-E glass (coating layer 2 is located on the inner side), the inner glass 3 is 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; compared with the third intermediate glass 9 being 2mm white glass, the third intermediate glass 9 being 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has smaller heat transfer coefficient and solar shading coefficient, because silver-free Low-E glass usually has excellent heat insulation performance, and the heat transfer coefficient of silver-free Low-E glass is significantly better than that of white glass, and has good heat preservation and insulation performance, which can block solar heat energy from entering the room; as a whole, it can effectively improve the heat preservation, heat insulation and noise reduction performance, wherein the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0061] Table 10 Thermal performance of four-glass three-cavity hollow glass

[0062] As shown in Table 10, the outer glass 1 of the four-glass three-cavity hollow glass is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third intermediate glass 9 is 4mm silver-free Low-E glass (coating layer 2 is located on the inner side), the inner glass 3 is 4mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; when the thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all 3mm, and the interiors are filled with air, argon or a mixture of air and argon, the heat transfer coefficients of the four-glass three-cavity hollow glass are all greater than 1 W / (m2·K), and the solar heat gain coefficients are small; the heat transfer coefficients of the four-glass three-cavity hollow glass of other specifications are all less than 1 W / (m2·K); and the overall heat preservation, heat insulation and noise reduction performance is effectively improved, among which, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 4mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 4mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0063] Table 11 Heat performance of four-glass three-cavity hollow glass

[0064] As shown in Table 11, the outer glass 1 of the four-glass three-cavity hollow glass is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third intermediate glass 9 is 1mm silver-free Low-E glass (coating layer 2 is located on the inner side) or 1mm white glass, the outer glass 1 is 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; when the thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are 4mm, 5mm and 4mm respectively and the interiors are all filled with air, the heat transfer coefficient is greater than 1 W / (m2·K), and the heat transfer coefficients of the four-glass three-cavity hollow glass of other specifications are all less than 1 W / (m2·K); and the overall heat preservation, heat insulation and noise reduction performance is effectively improved, among which, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 5mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0065] Table 12 Thermal properties of quad-pane triple-cavity insulated glass

[0066] As shown in Table 12, the outer glass 1 of the quadrangular triple-cavity insulated glass is 3mm double-silvered Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is 3mm double-silvered Low-E glass (coating layer 2 is located on the inner side), the third middle glass 9 is 1mm unsilvered Low-E glass (coating layer 2 is located on the inner side) or 1mm clear glass, and the inner glass 3 is 4mm unsilvered Low-E glass (coating layer 2 is located on the inner side). The overall thickness of the third cavity 10, the fourth cavity 11, and the fifth cavity 12 is the same. When the overall thickness of the third cavity 10, the fourth cavity 11, and the fifth cavity 12 is the same (4mm) and the interior is completely filled with air, its heat transfer coefficient is greater than 1 W / (m²·K). The heat transfer coefficients of other specifications of quadrangular triple-cavity insulated glass are all less than 1. W / (m²·K); Overall, it can effectively improve the thermal insulation, heat insulation and noise reduction performance. Among them, the quad-glazed triple-cavity insulated glass with the following specifications is better: 3mm double silver Low-E glass (coating layer 2 is on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is on the inner side) + 4mm Xe + 1mm silver-free Low-E glass (coating layer 2 is on the inner side) + 4mm Xe + 4mm silver-free Low-E glass (coating layer 2 is on the inner side).

[0067] As a possible implementation method, it can also be, for example... Figure 5 As shown, the outer glass 1 is double-silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the second middle glass 8 is double-silver Low-E glass, and the third middle glass 9 is either double-silver Low-E glass or silver-free Low-E glass. The coating layer 2 of the second middle glass 8 is located on the outside, and the coating layer 2 of the third middle glass 9 is located on the outside. In this embodiment, a third type of quad-glazed, triple-cavity insulated glass is provided. By using double-silver Low-E glass for the outer glass 1 and the second central glass 8, the interior can be bright and transparent, reducing reliance on artificial lighting, lowering energy consumption, improving indoor visual comfort, reducing indoor heat loss, and saving energy. The third central glass 9 can be double-silver Low-E glass or silver-free Low-E glass, which can be selected according to actual needs. The inner glass 3 uses silver-free Low-E glass, which can effectively reflect indoor heat radiation, reduce heat transfer, lower energy consumption, and has a good shading effect. At the same time, the coating layer 2 of the second central glass 8 and the coating layer 2 of the third central glass 9 are located on the outer side, working together to improve the overall thermal insulation, heat insulation, and noise reduction performance.

[0068] In a specific application, the four-glass three-cavity hollow glass of the embodiment has the outer glass 1 being double-silver Low-E glass, the inner glass 3 being silver-free Low-E glass, the second intermediate glass 8 being double-silver Low-E glass, the third intermediate glass 9 being double-silver Low-E glass, the coating layer 2 of the second intermediate glass 8 being located at the outer side, and the coating layer 2 of the third intermediate glass 9 being located at the outer side; the thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are all 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm; the gas is air, argon, krypton, xenon or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton, and the thermal performance, i.e. the heat transfer coefficient K value and the solar shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thicknesses is compared, and the comparison results are shown in Tables 13 and 14 as follows: Table 13 Thermal performance of four-glass three-cavity hollow glass

[0069] As shown in Table 13, when the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), and the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same; the four-glass three-cavity hollow glass with the third cavity 10 having a thickness of 4mm, the fourth cavity 11 having a thickness of 3mm and the fifth cavity 12 having a thickness of 4mm has little difference in heat transfer coefficient and solar shading coefficient compared with the four-glass three-cavity hollow glass with the third cavity 10 having a thickness of 3mm, the fourth cavity 11 having a thickness of 5mm and the fifth cavity 12 having a thickness of 3mm; when the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient is relatively large, and is greater than 1 W / (m²·K); when the third cavity 10 is 4mm, the fourth cavity 11 is 3mm and the fifth cavity 12 is 4mm and are all filled with argon gas, air and mixed gas of argon and air, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficients of other specifications of hollow glass are all less than 1 W / (m²·K); overall, the heat preservation, heat insulation and noise reduction performances can be effectively improved, among which, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 5mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 3mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0070] Table 14 Heat performance of four-glass three-cavity hollow glass

[0071] As can be seen from Table 14, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 3mm double silver Low-E glass (the coating layer 2 is located on the outer side), the inner glass 3 is selected as 2mm silver-free Low-E glass (the coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; the thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is 4mm; when the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are filled with air, the heat transfer coefficient is larger than 1 W / (m²·K), and the heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K); on the whole, the heat preservation, heat insulation and noise reduction performance can be effectively improved, among which, the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (the coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (the coating layer 2 is located on the outer side) + 4mm Xe + 3mm double silver Low-E glass (the coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (the coating layer 2 is located on the inner side) has better performance.

[0072] As a convertible embodiment, the outer glass 1 can be double silver Low-E glass, the inner glass 3 can be silver-free Low-E glass, the second intermediate glass 8 can be double silver Low-E glass, the third intermediate glass 9 can be white glass, and the coating layer 2 of the second intermediate glass 8 is located on the outer side. In this embodiment, a fourth four-bottle three-cavity hollow glass is provided, by using double silver Low-E glass for the outer glass 1 and the second intermediate glass 8, the indoor brightness and transparency can be ensured, the dependence on artificial lighting can be reduced, the energy consumption can be reduced, the indoor visual comfort can be improved, the indoor heat loss can be reduced, the energy consumption can be saved, and under this premise, the cost can be reduced by using white glass for the third intermediate glass 9; the silver-free Low-E glass is used for the inner glass 3, which can effectively reflect the indoor heat radiation, reduce heat transfer, reduce energy consumption, has good sun-shading effect, and the coating layer 2 of the second intermediate glass 8 is located on the outer side, which cooperates with each other to improve the overall heat preservation, heat insulation and noise reduction performance.

[0073] In a specific application, the four-glass three-cavity hollow glass of the embodiment has the outer glass 1 being double-silver Low-E glass, the inner glass 3 being silver-free Low-E glass, the second intermediate glass 8 being double-silver Low-E glass, and the third intermediate glass 9 being silver-free Low-E glass or white glass. The coating layer 2 of the second intermediate glass 8 is located on the outer side. When the third intermediate glass 9 is silver-free Low-E glass, the coating layer 2 of the third intermediate glass 9 is located on the outer side. The thicknesses of the outer glass 1, the second intermediate glass 8, and the inner glass 3 are all 2 mm-4 mm. The thickness of the third intermediate glass 9 is 1 mm-3 mm. The thicknesses of the third cavity 10 and the fourth cavity 11 are both 2 mm-4 mm. The thickness of the fifth cavity 12 is 3 mm-7 mm. The gas is air, argon, krypton, xenon, or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon, and krypton. The thermal performance, i.e., the heat transfer coefficient K value and the solar shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000 mm x 1500 mm) with different thicknesses is compared. The comparison results are shown in Tables 15-18. Table 15 Thermal performance of four-glass three-cavity hollow glass

[0074] From Table 15, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third middle glass 9 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the outer side) or white glass, the outer glass 1 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; compared with the third middle glass 9 being white glass, the third middle glass 9 being silver-free Low-E glass (coating layer 2 is located on the inner side) has smaller heat transfer coefficient and solar shading coefficient, because silver-free Low-E glass usually has excellent heat insulation performance, and the heat transfer coefficient of silver-free Low-E glass is significantly better than that of white glass, which has good heat preservation and insulation performance and can block solar heat into the room; when the third middle glass 9 is white glass, the thickness of the third cavity 10 is 4mm, the thickness of the fourth cavity 11 is 3mm, the thickness of the fifth cavity 12 is 4mm, and the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, argon air and argon mixed gas, the heat transfer coefficient is greater than 1 W / (m²·K); when the third middle glass 9 is silver-free Low-E glass (coating layer 2 is located on the outer side), the thickness of the third cavity 10 is 4mm, the thickness of the fourth cavity 11 is 3mm, the thickness of the fifth cavity 12 is 4mm, and the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, argon air and argon mixed gas (air:argon is 1:9), the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficient of the four-bottle three-cavity hollow glass of the remaining specifications is less than 1 W / (m²·K); overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance, among which, the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mmXe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 3mmXe + 3mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mmXe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0075] Table 16 Heat performance of four-bottle three-cavity hollow glass

[0076] As shown in Table 16, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third middle glass 9 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the outer side) or 2mm white glass, the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same, and the thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is 4mm; when the third middle glass 9 is 2mm white glass and when the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, argon or a mixed gas of air and argon, the heat transfer coefficient is greater than 1 W / (m2·K); when the third middle glass 9 is 2mm silver-free Low-E glass (coating layer 2 is located on the outer side) and when the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient is greater than 1 W / (m2·K), and the heat transfer coefficients of the four-glass three-cavity hollow glasses of the remaining specifications are all less than 1 W / (m2·K); as a whole, the heat preservation, heat insulation and noise reduction performance can be effectively improved, and among them, the performance of the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mmXe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mmXe + 2mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mmXe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is better.

[0077] Table 17 Heat performance of four-glass three-cavity hollow glass

[0078] As shown in Table 17, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third middle glass 9 is selected as 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) or 1mm white glass, the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; when the thicknesses of the third cavity 10 and the fifth cavity 12 are both 4mm, the thickness of the fourth cavity 11 is 5mm, the third middle glass 9 is 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) and the inside is filled with air, the heat transfer coefficient is greater than 1 W / (m2·K); when the third middle glass 9 is 1mm white glass and the inside of the cavity is filled with air, argon or a mixture of air and argon, the heat transfer coefficient is greater than 1 W / (m2·K), and the heat transfer coefficients of the four-glass three-cavity hollow glasses of the remaining specifications are all less than 1 W / (m2·K); overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved, among which, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 5mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0079] Table 18 Heat performance of four-glass three-cavity hollow glass

[0080] As shown in Table 18, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) or 1mm white glass, the inner glass 3 is selected as 4mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same. The thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all 4mm; when the third intermediate glass 9 is 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) and the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient thereof is greater than 1 W / (m2·K); when the third intermediate glass 9 is 1mm white glass and the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, argon or a mixed gas of air and argon, the heat transfer coefficient thereof is greater than 1 W / (m2·K), and the heat transfer coefficients of the four-glass three-cavity hollow glasses of the remaining specifications are all less than 1 W / (m2·K); as a whole, the heat preservation, heat insulation and noise reduction performances can be effectively improved, and the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 4mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0081] In summary, the heat transfer coefficient and the solar shading coefficient of the first four-glass three-cavity hollow glass and the second four-glass three-cavity hollow glass are relatively small compared with the third four-glass three-cavity hollow glass and the fourth four-glass three-cavity hollow glass. Therefore, when the coating layer 2 of the outer glass 1 is located on the inner side, the coating layer 2 of the second intermediate glass 8 is located on the inner side, the coating layer 2 of the third intermediate glass 9 is located on the inner side and the coating layer 2 of the inner glass 3 is located on the inner side, the far infrared radiation between the indoor and outdoor can be more effectively reflected, the heat conduction and convection can be reduced, and thus the overall heat transfer coefficient of the hollow glass can be reduced; when the coating layer 2 of the third intermediate glass 9 is located on the inner side, the solar radiation that passes through the intermediate cavity can be further reflected, and the solar shading coefficient can be reduced.

[0082] As a transformable embodiment, it can also be, for example, Figure 6The outer glass 1 is a double-silver Low-E glass, the inner glass 3 is a non-silver Low-E glass, the second intermediate glass 8 is a double-silver Low-E glass, and the third intermediate glass 9 is a double-silver Low-E glass or a non-silver Low-E glass. The coating layer 2 of the second intermediate glass 8 is located on the outer side, and the coating layer 2 of the third intermediate glass 9 is located on the inner side. In this embodiment, a fifth four-glass three-cavity hollow glass is provided. By using double-silver Low-E glass for the outer glass 1 and the second intermediate glass 8, the brightness and transparency of the indoor environment can be ensured, the dependence on artificial lighting can be reduced, the energy consumption can be reduced, the visual comfort of the indoor environment can be improved, the loss of indoor heat can be reduced, energy saving and consumption reduction can be achieved, and the third intermediate glass 9 is a double-silver Low-E glass or a non-silver Low-E glass, which can be selected according to actual needs. The inner glass 3 is a non-silver Low-E glass, which can effectively reflect the heat radiation in the room, reduce heat transfer, reduce energy consumption, and has good shading effect. At the same time, the coating layer 2 of the second intermediate glass 8 is located on the outer side, and the coating layer 2 of the third intermediate glass 9 is located on the inner side, which cooperates with each other to improve the overall heat preservation, heat insulation and noise reduction performance.

[0083] In specific applications, the four-glass three-cavity hollow glass of the present embodiment, the outer glass 1 is a double-silver Low-E glass, the inner glass 3 is a non-silver Low-E glass, the second intermediate glass 8 is a double-silver Low-E glass, and the third intermediate glass 9 is a double-silver Low-E glass, and the coating layer 2 of the second intermediate glass 8 is located on the outer side, and the coating layer 2 of the third intermediate glass 9 is located on the inner side; the thickness of the outer glass 1, the second intermediate glass 8 and the inner glass 3 is 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thickness of the third cavity 10 and the fourth cavity 11 is 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm; the gas is air, argon, krypton, xenon or a mixture of air and argon, air and krypton or air, argon and krypton. The thermal performance of the four-glass three-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thicknesses, i.e. heat transfer coefficient K value and shading coefficient SC value, is compared, and the comparison results are shown in Tables 19 and 20 as follows: Table 19 Thermal performance of four-glass three-cavity hollow glass

[0084] As shown in Table 19, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third middle glass 9 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), and the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same. The four-bottle three-cavity hollow glass with the thickness of the third cavity 10 being 4mm, the thickness of the fourth cavity 11 being 3mm and the thickness of the fifth cavity 12 being 4mm has little difference in heat transfer coefficient and shading coefficient compared with the four-bottle three-cavity hollow glass with the thickness of the third cavity 10 being 3mm, the thickness of the fourth cavity 11 being 5mm and the thickness of the fifth cavity 12 being 3mm. When the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with air, the heat transfer coefficient is relatively large, all greater than 1 W / (m²·K). When the thickness of the third cavity 10 is 3mm, the thickness of the fourth cavity 11 is 5mm and the thickness of the fifth cavity 12 is 3mm, and the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with argon or a mixture of argon and air, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K). Compared with the first four-bottle three-cavity hollow glass provided in Table 16, the heat transfer coefficient and the shading coefficient are both larger. Overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved. Among them, the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 3mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0085] Table 20 Thermal performance of four-bottle three-cavity hollow glass

[0086] As shown in Table 20, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), and the inner glass 3 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same. The thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all 4mm. When the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient is relatively large, all greater than 1 W / (m²·K). The heat transfer coefficients of the hollow glasses with other structures are all less than 1 W / (m²·K). Overall, the heat preservation, heat insulation and noise reduction performances can be effectively improved. Among them, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0087] In specific applications, the four-glass three-cavity hollow glass of the embodiment has the following structures: the outer glass 1 is double silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the second intermediate glass 8 is double silver Low-E glass, the third intermediate glass 9 is silver-free Low-E glass, the coating layer 2 of the second intermediate glass 8 is located on the outer side, and the coating layer 2 of the third intermediate glass 9 is located on the inner side. The thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are all 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm. The gas is air, argon, krypton, xenon or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton. The thermal performance, i.e. the heat transfer coefficient K value and the solar shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thicknesses is compared. The comparison results are shown in Tables 21-22. Table 21 Thermal performance of four-glass three-cavity hollow glass

[0088] As shown in Table 21, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same. When the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficients of the three cavities are all greater than 1 W / (m2·K), and the heat transfer coefficients of other specifications of hollow glass are all less than 1 W / (m2·K). Overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved. Among them, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0089] Table 22 Thermal performance of four-glass three-cavity hollow glass

[0090] As shown in Table 22, the outer glass 1 of the four-glass three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the third intermediate glass 9 is selected as 4mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the inner glass 3 is selected as 4mm silver-free Low-E glass (coating layer 2 is located on the inner side). The overall thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are the same. The thicknesses of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all 3mm. When the interiors of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, argon or a mixture of air and argon, the heat transfer coefficients of the three cavities are all greater than 1 W / (m2·K), and the heat transfer coefficients of other specifications of hollow glass are all less than 1 W / (m2·K). Overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved. Among them, the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 3mm Xe + 4mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 4mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0091] Therefore, in the first four-bore three-cavity hollow glass, the second four-bore three-cavity hollow glass, the third four-bore three-cavity hollow glass, the fourth four-bore three-cavity hollow glass and the fifth four-bore three-cavity hollow glass, the heat transfer coefficient and the solar shading coefficient of the third interlayer glass 9 selected as the double silver Low-E glass (the coating layer 2 is located on the inner side) of the first four-bore three-cavity hollow glass are smaller than those of the third interlayer glass 9 selected as the double silver Low-E glass (the coating layer 2 is located on the inner side) of the fifth four-bore three-cavity hollow glass, because when the double silver Low-E film is on the inner side of the outer glass 1 and the third interlayer glass 9, it can more effectively reflect the indoor and outdoor long-wave thermal radiation, reducing the penetration of thermal radiation through the glass. When the coating layer 2 of the second interlayer glass 8 is on the inner side, it can further block the heat radiation transmission of the intermediate cavity, forming a multi-layer radiation barrier and reducing the overall heat transfer. When the coating layer 2 of the second interlayer glass 8 is on the outer side, part of the heat is directly absorbed by the outer glass 1 and transmitted to the indoor, and the radiation heat emission path of the intermediate cavity is destroyed, resulting in an increase in the heat transfer coefficient and a lack of film radiation barrier in the intermediate cavity, increasing the gas convection and reducing the overall thermal insulation performance. The heat transfer coefficient of the third interlayer glass 9 selected as the silver-free Low-E glass (the coating layer 2 is located on the inner side) of the first four-bore three-cavity hollow glass is smaller than that of the third interlayer glass 9 selected as the silver-free Low-E glass (the coating layer 2 is located on the inner side) of the third four-bore three-cavity hollow glass, while the solar shading coefficient is different, because when the coating layer 2 of the outer glass 1 is on the inner side and the coating layer 2 of the third interlayer glass 9 is on the inner side, part of the visible light is allowed to enter the room along with the sunlight, resulting in a relatively large solar shading coefficient, which improves the heat preservation, thermal insulation and noise reduction performance. In addition, the heat transfer coefficient and the solar shading coefficient of the fifth four-bore three-cavity hollow glass are smaller than those of the third and fourth four-bore three-cavity hollow glasses, because when the coating layer 2 of the third interlayer glass 9 is on the inner side, it can effectively reflect the heat radiation of the intermediate cavity and reduce the heat transfer to the inner side, thereby having a smaller heat transfer coefficient. When the coating layer 2 of the third interlayer glass 9 is on the inner side, the solar radiation entering the room needs to pass through a longer radiation, increasing the heat energy attenuation and thus reducing the solar shading coefficient.

[0092] As a convertible embodiment, it can also be, for example, Figure 7The outer glass 1 is a double-silver Low-E glass, the inner glass 3 is a non-silver Low-E glass, the second intermediate glass 8 is a double-silver Low-E glass, the third intermediate glass 9 is a double-silver Low-E glass or a non-silver Low-E glass, and the coating layer 2 of the second intermediate glass 8 is located on the inner side, and the coating layer 2 of the third intermediate glass 9 is located on the outer side. In this embodiment, the sixth four-glass three-cavity hollow glass is provided. By using double-silver Low-E glass for the outer glass 1 and the second intermediate glass 8, the brightness and transparency of the indoor environment can be ensured, the dependence on artificial lighting can be reduced, the energy consumption can be reduced, the visual comfort of the indoor environment can be improved, the loss of indoor heat can be reduced, energy saving and consumption reduction can be achieved, and the third intermediate glass 9 is a double-silver Low-E glass or a non-silver Low-E glass, which can be selected according to actual needs; the inner glass 3 is a non-silver Low-E glass, which can effectively reflect the heat radiation of the indoor environment, reduce heat transfer, reduce energy consumption, and has good sun-shading effect. At the same time, the coating layer 2 of the second intermediate glass 8 is located on the inner side, and the coating layer 2 of the third intermediate glass 9 is located on the outer side, which cooperates with each other to improve the overall heat preservation, heat insulation and noise reduction performance.

[0093] In a specific application, the four-glass three-cavity hollow glass of the embodiment has the following characteristics: the outer glass 1 is a double-silver Low-E glass, the inner glass 3 is a non-silver Low-E glass, the second intermediate glass 8 is a double-silver Low-E glass, the third intermediate glass 9 is a double-silver Low-E glass, the coating layer 2 of the second intermediate glass 8 is located on the outer side, and the coating layer 2 of the third intermediate glass 9 is located on the inner side; the thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are all 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm; the gas is air, argon, krypton, xenon or a mixture of air and argon, a mixture of air and krypton, or a mixture of air, argon and krypton. The thermal performance, i.e. the heat transfer coefficient K value and the shading coefficient SC value, of the four-glass three-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thicknesses is compared, and the comparison results are shown in Tables 23 and 24 as follows: Table 23 Thermal performance of four-glass three-cavity hollow glass

[0094] From Table 23, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third middle glass 9 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the inner glass 3 is selected as 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same. Compared with the four-bottle three-cavity hollow glass with the third cavity 10 having a thickness of 3mm, the fourth cavity 11 having a thickness of 5mm and the fifth cavity 12 having a thickness of 3mm, the heat transfer coefficient and the shading coefficient of the four-bottle three-cavity hollow glass with the third cavity 10 having a thickness of 4mm, the fourth cavity 11 having a thickness of 3mm and the fifth cavity 12 having a thickness of 4mm are not much different. When the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with air, the heat transfer coefficient is slightly large, and is greater than 1 W / (m²·K). When the thickness of the third cavity 10 is 3mm, the thickness of the fourth cavity 11 is 5mm, and the thickness of the fifth cavity 12 is 3mm, and the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with argon or a mixture of argon and air, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficient of other specifications of hollow glass is less than 1 W / (m²·K). Overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance, among which the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 5mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 3mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0095] Table 24 Thermal performance of four-bottle three-cavity hollow glass

[0096] From Table 24, the outer glass 1 of the four-bottle three-cavity hollow glass is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second middle glass 8 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third middle glass 9 is selected as 3mm double silver Low-E glass (coating layer 2 is located on the outer side), the inner glass 3 is selected as 2mm silver-free Low-E glass (coating layer 2 is located on the inner side), the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; the thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is 4mm, when the inside of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is filled with air, the heat transfer coefficient is larger, all greater than 1W / (m²·K), the heat transfer coefficient of other structure hollow glass is less than 1W / (m²·K); overall, it can effectively improve the heat preservation, heat insulation and noise reduction performance, among them, the four-bottle three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0097] In specific applications, the four-bottle three-cavity hollow glass of the embodiment, the outer glass 1 is double silver Low-E glass, the inner glass 3 is silver-free Low-E glass, the second middle glass 8 is double silver Low-E glass, the third middle glass 9 is silver-free Low-E glass, and the coating layer 2 of the second middle glass 8 is located on the inner side, and the coating layer 2 of the third middle glass 9 is located on the outer side; the thickness of the outer glass 1, the second middle glass 8 and the inner glass 3 is 2mm-4mm, the thickness of the third middle glass 9 is 1mm-3mm, the thickness of the third cavity 10 and the fourth cavity 11 is 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm; the gas is air, argon, krypton, xenon or air and argon mixed gas or air and krypton mixed gas or air and argon and krypton mixed gas, and the thermal performance of the four-bottle three-cavity hollow glass (glass size: length x width: 2000mm x 1500mm) with different thickness, i.e. the heat transfer coefficient K value and the shading coefficient SC value are compared, and the comparison results are shown in Tables 25-26: Table 25 Thermal performance of four-bottle three-cavity hollow glass

[0098] As shown in Table 25, the outer glass 1 of the four-glass three-cavity hollow glass is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third intermediate glass 9 is 3mm silver-free Low-E glass (coating layer 2 is located on the outer side), the inner glass 3 is 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same. When the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are filled with air, argon or air and argon mixed gas, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficients of other specifications of hollow glass are less than 1 W / (m²·K); overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved, and the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0099] Table 26 Thermal performance of four-glass three-cavity hollow glass

[0100] As shown in Table 26, the outer glass 1 of the four-glass three-cavity hollow glass is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the second intermediate glass 8 is 3mm double silver Low-E glass (coating layer 2 is located on the inner side), the third intermediate glass 9 is 1mm silver-free Low-E glass (coating layer 2 is located on the outer side), the inner glass 3 is 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), and the overall thickness of the third cavity 10, the fourth cavity 11 and the fifth cavity 12 is the same; when the thickness of the third cavity 10 is 4mm, the thickness of the fourth cavity 11 is 5mm, the thickness of the fifth cavity 12 is 4mm, and the third cavity 10, the fourth cavity 11 and the fifth cavity 12 are all filled with air, the heat transfer coefficient is greater than 1 W / (m²·K), and the heat transfer coefficients of other specifications of hollow glass are less than 1 W / (m²·K); overall, the heat preservation, heat insulation and noise reduction performance can be effectively improved, and the four-glass three-cavity hollow glass with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 5mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) has better performance.

[0101] Therefore, among the first four-bore three-cavity hollow glass, the second four-bore three-cavity hollow glass, the third four-bore three-cavity hollow glass, the fourth four-bore three-cavity hollow glass, the fifth four-bore three-cavity hollow glass and the sixth four-bore three-cavity hollow glass, the first four-bore three-cavity hollow glass has smaller heat transfer coefficient and shading coefficient than the sixth four-bore three-cavity hollow glass, because the coating layer 2 of the third middle glass 9 is located on the inner side, which can effectively reflect the heat radiation of the intermediate cavity, reduce the heat transfer to the inner side, form a "radiation barrier of outer resistance and inner isolation", and further reduce the re-radiation of indoor objects after absorbing solar heat, thereby reducing the shading coefficient; secondly, the heat transfer coefficient and shading coefficient of the sixth four-bore three-cavity hollow glass and the third four-bore three-cavity hollow glass and the fourth four-bore three-cavity hollow glass are not much different, because the difference in heat radiation reflection and emission attenuation path of the sixth four-bore three-cavity hollow glass and the third four-bore three-cavity hollow glass and the fourth four-bore three-cavity hollow glass is small; in addition, compared with the fifth four-bore three-cavity hollow glass, the heat transfer coefficient and shading coefficient of the fifth four-bore three-cavity hollow glass are smaller, because when the coating layer 2 of the second middle glass 8 is located on the outer side and when the coating layer 2 of the third middle glass 9 is located on the inner side, the heat radiation between the outer glass 1 and the middle glass can be further reflected, effectively reducing the heat radiation transmittance of the intermediate cavity, increasing the radiation heat reflection path, reducing the radiation heat transmission of the intermediate cavity, thereby reducing the heat transfer coefficient, the reflection attenuation of solar radiation, the path is longer than that of the coating layer 2 of the second middle glass 8 located on the inner side and the coating layer 2 of the third middle glass 9 located on the inner side, and the reflection ability of solar radiation is stronger, thereby reducing the shading coefficient.

[0102] From the above table, it can be seen that in the single-cavity hollow glass, the heat transfer performance of the specifications of 3mm double silver Low-E glass (coating layer 2 located on the inner side) + 17mm Xe + 3mm silver-free Low-E glass (coating layer 2 located on the inner side) and 3mm double silver Low-E glass (coating layer 2 located on the inner side) + 15mm Xe + 3mm silver-free Low-E glass (coating layer 2 located on the inner side) is the best; because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a decrease in the heat transfer coefficient, and the absorption and reflection ability of xenon gas to solar radiation is poor, which cannot effectively block the solar radiation from penetrating into the room through the glass, thereby resulting in a slightly large shading coefficient. The heat transfer coefficient and shading coefficient of the hollow glass of the two structure specifications are the same because the thickness of the intermediate cavity is relatively large and the change is relatively small.

[0103] In the first three-glass two-cavity hollow glass, the thermal performance of the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best; because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in the decrease of the heat transfer coefficient, and the absorption and reflection ability of xenon gas to solar radiation is poor, which cannot effectively block the solar radiation from entering the room through the glass, thereby leading to the relatively large shading coefficient. Compared with the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7.5mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 7.5mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side), the shading coefficient does not change, because the size of the shading coefficient is related to the radiation characteristics of the glass surface, and the change of the cavity thickness has little effect.

[0104] In the second three-glass two-cavity hollow glass, the thermal performance of the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 6mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 8mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best; because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in the decrease of the heat transfer coefficient, and the absorption and reflection ability of xenon gas to solar radiation is poor, which cannot effectively block the solar radiation from entering the room through the glass, thereby leading to the relatively large shading coefficient.

[0105] The thermal performance of the first four-bottle three-cavity hollow glass and the second four-bottle three-cavity hollow glass with the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) and 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best; because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is relatively high, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a decrease in the heat transfer coefficient. And the absorption and reflection ability of xenon gas to solar radiation is poor, which cannot effectively block the solar radiation from penetrating into the room through the glass, thereby leading to a relatively large solar shading coefficient. While the hollow glass with the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) has a relatively small difference in solar shading coefficient compared to the hollow glass with the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 3mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side), because the cavity thickness and glass thickness of the hollow glass change relatively little, which has a relatively small effect.

[0106] In the third four-bottle three-cavity hollow glass and the fourth four-bottle three-cavity hollow glass, the thermal performance of the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) and 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 5mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best. This is because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a lower heat transfer coefficient. And the ability of xenon gas to absorb and reflect solar radiation is poor, which cannot effectively block solar radiation from penetrating into the room through the glass, thereby causing the shading coefficient to be relatively large. The specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) and 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) have the same heat transfer coefficient, and the shading coefficient changes little. This is because the number of double silver Low-E film has little effect on the shading coefficient.

[0107] In the fifth four-bottle three-cavity hollow glass, the thermal performance of the specifications of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 2mm silver-free Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best; because the thermal conductivity of xenon gas is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon gas is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a lower heat transfer coefficient. And the ability of xenon gas to absorb and reflect solar radiation is poor, which cannot effectively block solar radiation from penetrating into the room through the glass, thereby causing the shading coefficient to be relatively large.

[0108] In the sixth four-bottle three-cavity hollow glass, the thermal performance of the specification of 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 4mm Xe + 3mm double silver Low-E glass (coating layer 2 is located on the inner side) + 5mm Xe + 1mm silver-free Low-E glass (coating layer 2 is located on the outer side) + 4mm Xe + 3mm silver-free Low-E glass (coating layer 2 is located on the inner side) is the best; because the thermal conductivity of xenon is lower than that of other inert gases, only 0.0052 W / (m·K), and the density of xenon is higher, which can obviously inhibit the heat exchange in the cavity, thereby reducing the heat transfer, resulting in a lower heat transfer coefficient. And the absorption and reflection ability of xenon to solar radiation is poor, which cannot effectively block the solar radiation from penetrating into the room through the glass, thereby resulting in a relatively large shading coefficient.

[0109] In one embodiment, the thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are all 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm.

[0110] In this embodiment, the thicknesses of the outer glass 1, the second intermediate glass 8 and the inner glass 3 are limited to 2mm-4mm, the thickness of the third intermediate glass 9 is 1mm-3mm, the thicknesses of the third cavity 10 and the fourth cavity 11 are both 2mm-4mm, and the thickness of the fifth cavity 12 is 3mm-7mm, so that the thickness is reduced to facilitate reducing the self-weight and cost while meeting the requirements.

[0111] In one embodiment, the gas includes at least one of air, argon, krypton and xenon.

[0112] In this embodiment, the gas can be one of air, argon, krypton and xenon, or a combination of multiple kinds in a certain proportion, to improve the heat preservation, heat insulation and noise reduction performance, which can be selected according to actual needs.

[0113] In one embodiment, the outer glass 1 is double silver Low-E glass, and the inner glass 3 is silver-free Low-E glass.

[0114] In this embodiment, the double silver Low-E glass has high visible light transmittance, which can ensure bright and transparent indoor, reduce dependence on artificial lighting, reduce energy consumption, improve indoor visual comfort, has energy-saving effect, and has good heat insulation performance, which can block solar heat from entering the room. Secondly, the double silver Low-E glass has a low heat transfer coefficient, which can reduce the loss of indoor heat; the silver-free Low-E glass has a low surface emissivity, which can effectively reflect the heat radiation in the room, reduce heat transfer and reduce energy consumption; the silver-free Low-E film is placed on the innermost side of the hollow glass, which has good shading effect.

[0115] In one embodiment, the thickness of the outer glass 1 and the inner glass 3 is 2mm-4mm.

[0116] In this embodiment, the thickness of the outer glass 1 and the inner glass 3 is limited to 2mm-4mm, so that the thickness is reduced to facilitate the reduction of self-weight and cost while meeting the requirements.

[0117] The thin cavity hollow glass provided in this embodiment provides nine different types of hollow glass, i.e. single cavity hollow glass, first three-glass two-cavity hollow glass, second three-glass two-cavity hollow glass, first four-glass three-cavity hollow glass, second four-glass three-cavity hollow glass, third four-glass three-cavity hollow glass, fourth four-glass three-cavity hollow glass, fifth four-glass three-cavity hollow glass and sixth four-glass three-cavity hollow glass, each of which has different arrangement and composition structure, different heat transfer coefficient, shading coefficient and cost, and the thermal performance is better when the coating layer 2 is located on the inner side and the gas is selected as xenon, but the overall thickness of the hollow glass is less than or equal to 23mm, and the total thickness of the middle cavity is greater than or equal to 6mm, which ensures that the overall thickness of the hollow glass is thin and has good thermal performance, facilitating transportation and installation. Compared with traditional hollow glass, the thin cavity hollow glass provided in this embodiment significantly reduces the shading coefficient and heat transfer coefficient, and can provide a more comfortable, energy-saving and environmentally friendly living environment. By using double-silver Low-E glass and silver-free Low-E glass, the reflection of visible light can be reduced, providing better natural lighting effect, making the indoor space brighter, and being suitable for various types of buildings to meet the performance requirements of glass in different occasions, solving the problem of large overall thickness of existing hollow glass, which is not convenient for transportation and installation.

[0118] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A thin cavity insulating glass unit, characterized in that, The utility model relates to a glass curtain wall, including: Outer glass (1), the film-coated layer (2) of outer glass (1) is located inside; Inner glass (3) is parallel with outer glass (1) and is arranged at interval preset distance, the film-coated layer (2) of inner glass (3) is located inside, the sealed cavity (4) is formed between outer glass (1) and inner glass (3), and the sealed cavity (4) is filled with gas; The interval between the outside of outer glass (1) and the inside of inner glass (3) is less than or equal to 23mm, and the thickness of sealed cavity (4) is greater than or equal to 6mm.

2. The thin cavity IG unit of claim 1, wherein, Further including: First intermediate glass (5) is parallelly arranged between outer glass (1) and inner glass (3) and separates sealed cavity (4) and forms first cavity (6) and second cavity (7), and the film-coated layer (2) of first intermediate glass (5) is located inside.

3. The thin cavity IG unit of claim 1, wherein, Further including: First intermediate glass (5) is parallelly arranged between outer glass (1) and inner glass (3) and separates sealed cavity (4) and forms first cavity (6) and second cavity (7), and the film-coated layer (2) of first intermediate glass (5) is located outside.

4. The thin cavity IG unit of claim 2 or 3, wherein, Outer glass (1) is double silver Low-E glass, inner glass (3) is silver-free Low-E glass, and first intermediate glass (5) is double silver Low-E glass. And / or, the thickness of outer glass (1) and inner glass (3) is 2mm-4mm, and the thickness of first cavity (6) and second cavity (7) is 5mm-9mm.

5. The thin cavity IG unit of claim 1, wherein, Further including second intermediate glass (8) and third intermediate glass (9), and the second intermediate glass (8) and the third intermediate glass (9) are sequentially and parallelly arranged between the outer glass (1) and the inner glass (3) from the outside to the inside, and the sealed cavity (4) is divided into a third cavity (10), a fourth cavity (11) and a fifth cavity (12).

6. The thin cavity IG unit of claim 5, wherein, Outer glass (1) is double silver Low-E glass, inner glass (3) is silver-free Low-E glass, second intermediate glass (8) is double silver Low-E glass, third intermediate glass (9) is double silver Low-E glass or silver-free Low-E glass, the film-coated layer (2) of second intermediate glass (8) is located inside, and the film-coated layer (2) of third intermediate glass (9) is located inside. Or, outer glass (1) is double silver Low-E glass, inner glass (3) is silver-free Low-E glass, second intermediate glass (8) is double silver Low-E glass, third intermediate glass (9) is double silver Low-E glass or silver-free Low-E glass, the film-coated layer (2) of second intermediate glass (8) is located inside, and the film-coated layer (2) of third intermediate glass (9) is located outside.

7. The thin cavity IG unit of claim 5, wherein, The outer layer glass (1) is double silver Low-E glass, the inner layer glass (3) is silver-free Low-E glass, the second intermediate glass (8) is double silver Low-E glass, the third intermediate glass (9) is double silver Low-E glass or silver-free Low-E glass, the film-coated layer (2) of the second intermediate glass (8) is located on the outer side, and the film-coated layer (2) of the third intermediate glass (9) is located on the inner side. Or, the outer layer glass (1) is double silver Low-E glass, the inner layer glass (3) is silver-free Low-E glass, the second intermediate glass (8) is double silver Low-E glass, the third intermediate glass (9) is double silver Low-E glass or silver-free Low-E glass, the film-coated layer (2) of the second intermediate glass (8) is located on the outer side, and the film-coated layer (2) of the third intermediate glass (9) is located on the outer side.

8. The thin cavity IG unit of claim 5, wherein, The outer layer glass (1) is double silver Low-E glass, the inner layer glass (3) is silver-free Low-E glass, the second intermediate glass (8) is double silver Low-E glass, the third intermediate glass (9) is white glass, and the film-coated layer (2) of the second intermediate glass (8) is located on the inner side. Or, the outer layer glass (1) is double silver Low-E glass, the inner layer glass (3) is silver-free Low-E glass, the second intermediate glass (8) is double silver Low-E glass, the third intermediate glass (9) is white glass, and the film-coated layer (2) of the second intermediate glass (8) is located on the outer side.

9. The thin cavity insulating glass unit according to any one of claims 5 to 8, characterized in that, The thickness of the outer layer glass (1), the second intermediate glass (8), and the inner layer glass (3) is 2mm-4mm, the thickness of the third intermediate glass (9) is 1mm-3mm, the thickness of the third cavity (10) and the fourth cavity (11) is 2mm-4mm, and the thickness of the fifth cavity (12) is 3mm-7mm.

10. The thin cavity IG unit of claim 1, wherein, The gas includes at least one of air, argon, krypton, and xenon; And / or, the outer layer glass (1) is double silver Low-E glass, and the inner layer glass (3) is silver-free Low-E glass. And / or, the thickness of the outer layer glass (1) and the inner layer glass (3) is 2mm-4mm.

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