Anti-fog high-transparency heat-insulating double-layer glass

Abstract

The utility model belongs to glass production technical field especially relates to a kind of anti-fog high-transmittance heat-insulation double glazing, including double glazing body, double glazing body includes inner layer glass, outer layer glass and spacing strip, the inner layer glass and outer layer glass edge are fixedly connected by spacing strip, spacing strip hollow setting, spacing strip is filled with molecular sieve for dry gas, the edge sealing connection of double glazing body has moisture-proof box, spacing strip is located moisture-proof box inside, moisture-proof box is filled with molecular sieve, moisture-proof box is provided with two gas exchange holes for the gas extraction of moisture-proof box, the seal block of detachable connection can be detachably connected on gas exchange hole. Compared with prior art, the utility model is set up moisture-proof box, solves the technical problem that the service life of double hollow glass is short due to the water vapor in the double hollow glass caused by the difficulty to achieve complete airtightness in prior art, and further leads to fogging.

Description

Technical Field

[0001] This utility model belongs to the field of glass production technology, and specifically relates to a double-layered glass with anti-fog, high transparency and heat insulation. Background Technology

[0002] Double-glazed windows, widely used in modern architecture and numerous industrial sectors, consist of two or more panes of glass evenly spaced with effective support. The glass is then sealed around the perimeter with a high-strength, airtight composite adhesive, creating a dry gas space within. This structural design utilizes the low thermal conductivity of air or other inert gases to block heat conduction through the glass, thus achieving the basic function of thermal insulation. Simultaneously, it also plays a significant role in sound insulation and noise reduction, creating a relatively comfortable and quiet indoor environment.

[0003] Traditional double-glazed windows simply consist of two panes of glass with a gas layer in between, relying on combinations of different materials and gases with varying thermal conductivity for insulation. This approach is often ineffective. To improve the thermal insulation performance of double-glazed windows, the industry has explored various methods. One approach involves increasing the gas density in the air gap or using rarer gases with lower thermal conductivity, such as krypton or xenon, to replace air. While this reduces heat conduction to some extent, it alters the refraction and scattering properties of light, causing a decrease in light transmittance. Another approach involves attaching low-transmittance functional films (such as photochromic films or radiation-cooling films) to the glass surface to block heat transfer from sunlight. Yet another approach involves installing light-blocking and heat-insulating components within the glass panes to achieve insulation. While these solutions improve the thermal insulation performance of double-glazed windows, they are insufficient for scenarios with stringent lighting requirements, such as high-end commercial display windows and modern skylight buildings. Insufficient indoor lighting not only affects visual comfort but may also increase lighting energy consumption.

[0004] Meanwhile, double-glazed windows are difficult to make completely airtight. Under long-term thermal expansion and contraction cycles, outside air inevitably seeps into the air gap. Moisture carried in the air, once entering the relatively enclosed space, is initially adsorbed by the built-in molecular sieve desiccant. However, the adsorption capacity of the molecular sieve is limited, and after several years of use, the adsorption gradually becomes saturated. At this point, excess moisture condenses into tiny water droplets on the cooler inner surface of the glass, forming fog. This fog adheres to the inner surface of the glass, greatly hindering light penetration, reducing the glass's light transmittance, and causing a sharp drop in light transmittance, resulting in dim indoor lighting. More problematic is that, due to the relatively enclosed nature of the insulated layer, fog cannot dissipate naturally, remaining trapped inside the glass for extended periods. This not only affects aesthetics but also further weakens the thermal insulation effect due to the difference in thermal conductivity between the water vapor and the glass, leading to a poor visual experience and increased energy consumption. This phenomenon is particularly pronounced in buildings in cold and humid regions, severely limiting the long-term performance of double-glazed windows. Furthermore, once water enters the glass, the only solution is to replace the entire double-glazed unit, as repairs are not possible, resulting in high operating costs. In conclusion, current double-glazed windows face numerous technical challenges in terms of thermal insulation, maintaining high light transmittance, and preventing fogging. An innovative solution is urgently needed to overcome these bottlenecks and meet the growing demand for high-performance building materials. Utility Model Content

[0005] The present invention aims to provide a high-transparency, anti-fog, heat-insulating double-glazed glass, which is mainly used to solve the technical problem that existing double-glazed insulated glass is prone to fogging due to the difficulty in achieving complete airtightness, which in turn leads to a short service life of the double-glazed insulated glass.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0007] A type of anti-fog, high-transparency, heat-insulating double-glazed glass includes a double-glazed body, comprising an inner glass layer, an outer glass layer, and a spacer strip. The edges of the inner and outer glass layers are fixedly connected by the spacer strip, which is hollow and filled with molecular sieves for drying gases. A moisture-proof box is sealed to the edge of the double-glazed body, with the spacer strip located inside the moisture-proof box, which is filled with molecular sieves. The moisture-proof box has two ventilation holes for extracting gas from the box, and sealing blocks are detachably connected to the ventilation holes.

[0008] Preferably, it also includes an air pump used with a desiccant box, the air pump's inlet end of which can be connected to a ventilation hole.

[0009] Preferably, the ventilation hole is located below the double-layered glass body.

[0010] Preferably, the moisture-proof box is coaxially connected to a ventilation pipe inside and at the ventilation hole, and the ventilation pipe has several through holes on its circumference.

[0011] Preferably, a nano-thermal insulation coating is sprayed onto the inner surface of the inner glass layer, and a high-reflectivity thermal resistance coating composed of silver nanoparticles is deposited on the nano-thermal insulation coating; an anti-ultraviolet film is attached to the outer surface of the outer glass layer, and a superhydrophobic self-cleaning film is attached on the anti-ultraviolet film.

[0012] Preferably, the thickness of the nano-insulating coating is 10-20 micrometers.

[0013] Preferably, the thickness of the high-reflectivity thermal resistance coating is 1-3 micrometers.

[0014] Preferably, the thickness of the UV-protective film is 2-5 micrometers.

[0015] Preferably, the thickness of the superhydrophobic self-cleaning membrane is 3-8 micrometers.

[0016] The beneficial effects of this utility model are as follows:

[0017] (1) This solution uses a moisture-proof box to cover the edge of the double-glazed glass body, and seals the edge a second time to further block the air and water vapor in the air from entering, thereby preventing the double-glazed glass from fogging.

[0018] When moisture enters the insulated glass layer after prolonged use, choose a relatively dry day or indoor environment, open both ventilation holes, connect the suction end of the air pump to one of the ventilation holes, and then start the air pump. This will extract the air from the moisture-proof box, reducing the internal air pressure. This will slowly draw out the air from inside the double-glazed glass and replace it with dry air, thus eliminating the condensation inside the double-glazed glass. After the condensation is eliminated, quickly install the sealing block to prevent moisture backflow.

[0019] Simultaneously, the air extraction process also removes moisture from the spacers and the molecular sieve inside the desiccant box, eliminating the need for sieve replacement and allowing for continued use. In summary, by incorporating a desiccant box, fogging inside double-glazed windows can be reduced, extending their lifespan. This solves the technical problem of existing technologies where the inability to achieve complete airtightness leads to moisture ingress and fogging inside the double-glazed windows, resulting in a short lifespan.

[0020] (2) High-efficiency heat insulation: The nano-heat insulation coating sprayed on the inner surface of the inner transparent glass uses silica nano-aerogel, which has high heat insulation performance and can effectively reduce heat transfer. At the same time, the high-reflectivity thermal resistance coating deposited on the nano-heat insulation coating is composed of silver nanoparticles, which can form a high-reflectivity thermal resistance coating to further reflect heat, thereby greatly enhancing the heat insulation effect of the double-glazed glass.

[0021] Applying a UV-protective film can effectively block ultraviolet radiation, protecting the indoor environment and items from UV damage.

[0022] The superhydrophobic self-cleaning film attached to the outer surface of the transparent glass gives the glass surface superhydrophobic properties, making it difficult for water droplets and dirt to adhere to the glass, thus achieving a self-cleaning function and reducing the frequency of manual cleaning.

[0023] Furthermore, thanks to the use of highly transparent inner and outer glass, as well as highly transparent coating and film materials, this double-glazed glass maintains high light transmittance while ensuring efficient heat insulation and other functions, ensuring sufficient indoor light and clear vision. This solves the technical problem of existing technologies where glass cannot simultaneously achieve high light transmittance, a key optical performance indicator, while blocking heat. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a three-dimensional structural diagram of a double-glazed glass with anti-fog, high transparency, and heat insulation, which is part of this utility model patent.

[0026] Figure 2 This is a partial exploded cross-sectional view of an anti-fog, high-transparency, heat-insulating double-layer glass according to this utility model patent.

[0027] Figure 3 This utility model patent relates to a type of anti-fog, high-transparency, heat-insulating double-glazed glass. Figure 2 Enlarged view of point A.

[0028] The reference numerals in the accompanying drawings include: double-glazed body 1, inner glass 11, outer glass 12, spacer 13, sealant 14, moisture-proof box 21, ventilation hole 22, ventilation pipe 23, sealing block 24, molecular sieve 3, air pump 4, connecting pipe 41, nano heat insulation coating 51, high reflectivity thermal resistance coating 52, UV protection film 53, and superhydrophobic self-cleaning film 54. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0033] like Figure 1 , Figure 2 As shown, a type of anti-fog, high-transparency, heat-insulating double-layer glass includes a double-layer glass body 1, a moisture-proof box 21, and an air pump 4 used with the moisture-proof box 21 (the air pump 4 is a conventional air pump 4 structure, and its structure is not the focus of this solution improvement, so it will not be described in detail here nor is a structural drawing attached).

[0034] like Figure 3As shown, the double-glazed body 1 serves as the basic framework of the entire glass structure. The double-glazed body 1 includes an inner glass layer 11 and an outer glass layer 12. Both the inner and outer glass layers 11 and 12 are made of high-quality optically transparent glass, possessing good light transmittance and mechanical strength to meet daily usage needs. The edges of the inner glass layer 11 and the outer glass layer 12 are fixedly connected by a spacer 13. The spacer 13 is made of aluminum and is tightly bonded between the two glass layers using sealant 14. This ensures uniform spacing between the two glass layers, maintaining a stable hollow structure. The sealant 14 effectively blocks direct heat conduction, initially achieving heat insulation. Furthermore, the spacer 13 provides basic support for subsequent sealing and moisture-proofing treatments.

[0035] It is worth noting that the spacer 13 is hollow inside, and the hollow part is filled with molecular sieves 3 for drying the gas. These molecular sieves 3 are evenly distributed in the form of fine particles. With their strong hygroscopic properties, they can adsorb trace amounts of water vapor that may penetrate from the hollow layer in a timely manner, ensuring the dryness of the gas in the hollow layer and building a solid first line of defense against fogging of the glass.

[0036] A moisture-proof box 21 is sealed to the edge of the double-layer glass body 1. The moisture-proof box 21 is made of high-strength, low-moisture-permeability plastic material and is seamlessly bonded to the edge of the double-layer glass body 1 by special sealant 14, forming a relatively closed space that surrounds the edge of the double-layer glass. The spacer strip 13 is located inside the moisture-proof box 21.

[0037] The interior of the moisture-proof box 21 is also filled with a large number of molecular sieves 3, which serve as a key secondary barrier to prevent moisture intrusion, further enhancing the adsorption capacity for moisture and ensuring that the interior of the double-layered glass is always in a dry environment.

[0038] Two ventilation holes 22 are provided on the dehumidifying box 21. The ventilation holes 22 are located below the double-layered glass body 1. This positioning design utilizes the gravitational settling characteristics of gases, making it easier for gases to accumulate near the ventilation holes 22, facilitating subsequent operations. A sealing block 24 is detachably connected to the ventilation hole 22. The sealing block 24 is made of soft and highly sealing rubber. Under normal conditions, it fits tightly with the ventilation hole 22 to ensure the airtightness of the dehumidifying box 21 and prevent external humid air from entering. When ventilation is required, it can be easily removed.

[0039] Furthermore, to better facilitate the replacement of gases inside the desiccant box 21, a dedicated air pump 4 is also provided for use in conjunction with the desiccant box 21. The air pump 4 has an inlet end designed with a connection interface adapted to the ventilation hole 22. When it is necessary to process the gases inside the desiccant box 21 and the double-layered glass, simply connect the air pump 4 to the ventilation hole 22 through a specially designed connecting pipe 41, which is threaded into the ventilation hole 22.

[0040] Meanwhile, a ventilation pipe 23 is coaxially connected inside the moisture-proof box 21 and located at the ventilation hole 22. Several through holes are regularly opened on its circumference. In practical applications, if moisture accidentally enters the insulating layer after long-term use of the glass, a relatively dry weather or indoor environment can be selected. The operator carefully opens the sealing blocks 24 on the two ventilation holes 22, connects the suction end of the air pump 4 to one of the ventilation holes 22 through the connecting pipe 41, ensuring a tight and leak-free connection, and then starts the air pump 4. When the air pump 4 is working, the strong suction first acts on the moisture-proof box 21, rapidly reducing its internal air pressure. Driven by the pressure difference, the gas inside the double-glazed glass is slowly extracted. At the same time, dry outside air slowly enters the moisture-proof box 21 through the ventilation hole 22 (not connected to the air pump 4), diluting the humid air in the double-glazed glass and effectively eliminating the condensation inside the double-glazed glass. After the fogging is completely eliminated, the operator must quickly reinstall the sealing block 24 back into the ventilation hole 22 to prevent moisture backflow and achieve the defogging effect. Furthermore, during the air extraction process, the airflow will carry away the moisture adsorbed on the spacer strip 13 and the molecular sieve 3 inside the moisture-proof box 21, allowing the molecular sieve 3 to regain some of its moisture absorption capacity. After the sealing block 24 is plugged back in, the entire anti-fog and heat-insulating double-glazed glass can be restored to its initial usable state, eliminating the need for frequent replacement of the molecular sieve 3, extending its service life, and thus continuously ensuring the anti-fog performance of the double-glazed glass. At the same time, it eliminates the need to directly replace the entire double-glazed glass body 1 after fogging occurs, reducing operating costs.

[0041] When installing the anti-fog and heat-insulating double-glazed glass described in this embodiment, the installation method is the same as the traditional method. First, install the anti-fog and heat-insulating double-glazed glass into the thermally broken aluminum alloy window frame, and then install the pressure strip to hold the glass in the window frame. When it is necessary to defog the double-glazed glass body, remove the pressure strip located on the lower surface and use the air pump 4 to ventilate. There is no need to disassemble the entire glass, making maintenance very convenient.

[0042] On the inner surface of the inner glass 11, a nano-thermal insulation coating 51 is applied using an advanced spraying process. This nano-thermal insulation coating 51 is made of silica nano-aerogel, with a thickness strictly controlled within 15 micrometers, and is uniformly and firmly adhered to the inner surface of the inner glass 11. Thanks to the extremely low thermal conductivity of the silica nano-aerogel, it acts as a highly efficient thermal barrier, significantly reducing the transfer of indoor heat to the outside and significantly improving the thermal insulation effect. On top of the nano-thermal insulation coating 51, a high-reflectivity thermal resistance coating is constructed through a fine deposition process. This coating is composed of silver nanoparticles and has a thickness of 2 micrometers, forming a dense high-reflectivity thermal resistance coating 52. This film can accurately reflect most of the radiant heat back; neither solar radiation nor indoor heat radiation can penetrate it. Working synergistically with the nano-thermal insulation coating 51, it greatly enhances the thermal insulation performance of the double-glazed windows. To ensure the stability and durability of these two coatings in daily use...

[0043] On the outer surface of the outer glass 12, a layer of UV-protective film 53 with a thickness of 3 micrometers is first attached. This film is closely attached to the surface of the outer glass 12 and is carefully made of a polymer material rich in UV absorbers. It can effectively block ultraviolet rays and prevent them from penetrating the glass and entering the room, effectively protecting indoor furniture, decorations, people and other items from UV damage, extending the service life of indoor items and ensuring the health of residents.

[0044] On top of the UV-protective film 53, a superhydrophobic self-cleaning film 54 with a thickness of 5 micrometers is attached. Its surface is specially treated to have a unique micro-rough structure and a low surface energy coating, which makes it almost impossible for water droplets and dirt to adhere to the glass surface. Once it comes into contact with water, the water droplets will quickly roll off and wash away dust and other pollutants, realizing the self-cleaning function of the glass. This greatly reduces the frequency and cost of manual cleaning and keeps the outer glass 12 clean and well-lit.

[0045] Through the ingenious structural design, close connection, and complementary working mechanism of the above-mentioned components, the anti-fog and heat-insulating double-glazed glass of this utility model successfully achieves excellent anti-fog, heat insulation, UV protection, and self-cleaning functions in one integrated unit. It can effectively solve the problems of easy fogging, short lifespan, and difficulty in balancing heat insulation and light transmission in existing double-glazed insulated glass. It can also be widely used in various buildings, transportation vehicles, high-end display facilities, and other fields with stringent requirements for glass performance, and has extremely high practical value and broad market prospects.

[0046] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A type of anti-fog, high-transparency, heat-insulating double-glazed glass, comprising a double-glazed body, the double-glazed body including an inner glass layer, an outer glass layer, and a spacer strip, wherein the edges of the inner and outer glass layers are fixedly connected by the spacer strip, the spacer strip is hollow, and the spacer strip is filled with a molecular sieve for drying gas, characterized in that, The double-layered glass body is sealed with a moisture-proof box at its edge. The spacer is located inside the moisture-proof box, which is filled with molecular sieves. The moisture-proof box is provided with two ventilation holes for extracting gas from the box, and sealing blocks are detachably connected to the ventilation holes.

2. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 1, characterized in that, It also includes an air pump used with a desiccant box, the air pump's inlet end of which can be connected to a ventilation port.

3. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 1, characterized in that, The ventilation hole is located below the double-layered glass body.

4. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 1, characterized in that, The moisture-proof box is coaxially connected to an air exchange pipe inside and at the air exchange hole, and the air exchange pipe has several through holes on its circumference.

5. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 1, characterized in that, A nano-thermal insulation coating is sprayed onto the inner surface of the inner glass layer, and a high-reflectivity thermal resistance coating composed of silver nanoparticles is deposited on the nano-thermal insulation coating; an anti-ultraviolet film is attached to the outer surface of the outer glass layer, and a superhydrophobic self-cleaning film is attached on the anti-ultraviolet film.

6. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 5, characterized in that, The thickness of the nano-thermal insulation coating is 10-20 micrometers.

7. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 5, characterized in that, The thickness of the high-reflectivity thermal resistance coating is 1-3 micrometers.

8. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 5, characterized in that, The thickness of the UV-protective film is 2-5 micrometers.

9. The anti-fog, high-transparency, heat-insulating double-glazed glass according to claim 5, characterized in that, The thickness of the superhydrophobic self-cleaning membrane is 3-8 micrometers.

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