Energy-saving low-radiation coated glass

Abstract

The utility model relates to the technical field of coated glass, and discloses energy-saving low-emissivity coated glass, which comprises a frame body, low-emissivity glass and toughened glass are arranged in the frame body, the low-emissivity glass is positioned right on the left of the toughened glass, a heat preservation layer is arranged between the low-emissivity glass and the toughened glass, and a heat insulation film is adhered to the right side of the toughened glass. According to the energy-saving low-emissivity coated glass, through the arrangement of the low-emissivity glass, the heat preservation layer and the heat insulation film, the energy-saving low-emissivity coated glass has high visible light transmissivity and low solar energy emissivity, the indoor comfort level and the energy-saving efficiency are improved, the glass can have good heat insulation and heat preservation effects, and the influence of outdoor temperature on indoor temperature is effectively reduced; the number of functional layers of the low-emissivity glass is small, the preparation process is simple, the cost is low, the requirement for equipment is low, and large-scale production and application are easy.

Description

Technical Field

[0001] The utility model relates to the technical field of coated glass, in particular to an energy-saving low-emissivity coated glass. Background Technique

[0002] Low-emissivity coated glass is a kind of glass that uses thin-film deposition technology to coat one or more functional thin films on the glass surface to adjust the thermal radiation from the sun or other heat sources, so as to achieve the purpose of energy conservation. The performance of low-emissivity coated glass is mainly determined by two parameters: visible light transmittance and solar radiation rate. The higher the visible light transmittance, the more transparent the glass; the lower the solar radiation rate, the better the heat insulation of the glass. Generally speaking, the visible light transmittance of low-emissivity coated glass is above 50%, and the solar radiation rate is below 40%.

[0003] At present, the functional layer of low-emissivity coated glass is mainly composed of metals and dielectrics. Common metals include silver, gold, copper, etc., and common dielectrics include silicon nitride, zinc oxide, tin oxide, etc. According to the number and structure of the functional layers, low-emissivity coated glass can be divided into types such as single-silver, double-silver, and triple-silver. Among them, single-silver coated glass only contains one silver layer, double-silver coated glass contains two silver layers, and triple-silver coated glass contains three silver layers. Generally speaking, the more silver layers, the better the heat insulation performance of the glass, but at the same time, it will reduce the transparency and color of the glass.

[0004] In order to improve the transparency and color of low-emissivity coated glass, some patent documents have proposed different solutions. For example, CN115259689B discloses a high-transparency, high-efficiency, energy-saving low-emissivity triple-silver coated glass. The functional layer of this glass is composed of oxide film layers. Compared with the dielectric layer using nitride materials, it can greatly reduce the stress inside the film layer, improve the crystal quality of the silver layer, thereby reducing the parasitic light absorption in the film layer, increasing the visible light transmittance, reducing the shading coefficient at the same time, improving the energy-saving performance, and greatly reducing the surface resistance, reaching or exceeding the performance of North American energy-saving glass, and the color is also more neutral. CN103144381A discloses a green low-emissivity energy-saving glass. The functional layer of this glass is composed of silicon nitride, nickel cadmium, zinc oxide tin, and silver. This glass has the characteristics of high light transmittance, low reflectivity, low emissivity, low shading coefficient, low surface resistance, etc., and the color is green, with good energy-saving and aesthetic effects.

[0005] However, there are still some deficiencies in the above-mentioned patent documents. For example, although the triple-silver coated glass in CN115259689B has high transparency and low surface resistance, the number of functional layers in it is relatively large, the preparation process is relatively complex, the cost is relatively high, and the requirements for equipment are relatively high. Although the green low-emissivity energy-saving glass in CN103144381A has good energy-saving and aesthetic effects, its color is green, which is not suitable for all application scenarios, and its functional layer contains toxic and harmful substances such as nickel and cadmium, which has a certain impact on the environment and human body. In view of this, we propose an energy-saving low-emissivity coated glass. Summary of the Invention

[0006] The purpose of the present invention is to provide an energy-saving low-emissivity coated glass to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the present invention is solved by the following technical solutions:

[0008] An energy-saving low-emissivity coated glass includes a frame body. A low-emissivity glass and a tempered glass are arranged inside the frame body. The tempered glass is located directly to the left of the low-emissivity glass. A heat-insulating layer is arranged between the low-emissivity glass and the tempered glass. An insulating film is bonded to the right side of the low-emissivity glass. Through the settings of the low-emissivity glass, the heat-insulating layer and the insulating film, the glass can have a good heat-insulating and heat-preserving effect, effectively reduce the influence of the outdoor temperature on the indoor temperature, and thus achieve the effect of energy saving.

[0009] Preferably, the low-emissivity glass includes a glass substrate, a first dielectric layer, a first silver layer, a second dielectric layer, a second silver layer, and a third dielectric layer arranged in sequence from right to left, so that the low-emissivity glass has a high visible light transmittance and a low solar radiation rate, and can effectively adjust the indoor light and temperature, improving the indoor comfort and energy-saving efficiency.

[0010] Preferably, the glass substrate is float glass, and the thickness of the glass substrate is 2-19 mm, having good light transmittance.

[0011] Preferably, the first dielectric layer, the second dielectric layer, and the third dielectric layer are all zinc oxide tin layers. The thickness of the first dielectric layer is 10-100 nm, the thickness of the second dielectric layer is 10-100 nm, and the thickness of the third dielectric layer is 10-100 nm. Using zinc oxide tin as the dielectric layer has good optical properties and durability.

[0012] Preferably, both the first silver layer and the second silver layer are pure silver layers. The thickness of the first silver layer is 5 - 30 nm, and the thickness of the second silver layer is 5 - 30 nm. With only the first and second silver layers, the number of layers of the functional layer is small, the preparation process is relatively simple, the cost is low, the requirements for equipment are low, and it is easy to mass-produce and apply.

[0013] Preferably, the heat-insulating layer is an inert gas layer, and the inert gas is krypton. Krypton can reduce the heat conduction of the glass and improve the heat-insulating and heat-preserving performance of the glass.

[0014] Preferably, a method for preparing energy-saving low-emissivity glass includes the following steps:

[0015] 1) Clean the glass substrate with a mixed solution of deionized water and ethanol, then dry it with nitrogen, and place it in a vacuum magnetron sputtering device;

[0016] 2) Deposit a first dielectric layer, a first silver layer, a second dielectric layer, a second silver layer, and a third dielectric layer on the glass substrate in sequence. Among them, the first dielectric layer, the second dielectric layer, and the third dielectric layer are sputtered using an indium tin oxide target, and the first silver layer and the second silver layer are sputtered using a pure silver target. Control the deposition time and power during the deposition process to adjust the thickness of each layer. The specific parameters are as follows:

[0017] First dielectric layer: deposition time is 10 min, power is 100 W, thickness is about 30 nm;

[0018] First silver layer: deposition time is 1 min, power is 50 W, thickness is about 10 nm;

[0019] Second dielectric layer: deposition time is 10 min, power is 100 W, thickness is about 30 nm;

[0020] Second silver layer: deposition time is 1 min, power is 50 W, thickness is about 10 nm;

[0021] Third dielectric layer: deposition time is 10 min, power is 100 W, thickness is about 30 nm;

[0022] 3) Take out the deposited coated glass from the vacuum magnetron sputtering device, perform cleaning, drying, and detection to obtain energy-saving low-emissivity glass with a visible light transmittance higher than 80% and an infrared reflectance higher than 90%.

[0023] Due to the adoption of the above technical solutions, the present invention has significant technical effects:

[0024] 1. The energy-saving low-emissivity coated glass, through the settings of the low-emissivity glass, the thermal insulation layer and the heat insulation film, has a high visible light transmittance and a low solar radiation rate, improves the indoor comfort and energy-saving efficiency, can make the glass have a good heat insulation and heat preservation effect, effectively reduces the influence of the outdoor temperature on the indoor temperature, and thus realizes the energy-saving effect.

[0025] 2. The energy-saving low-emissivity coated glass has fewer layers in the functional layer of the low-emissivity glass, a relatively simple preparation process, a lower cost, lower requirements for equipment, and is easy to mass-produce and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 is a schematic diagram of the overall sectional structure of the present utility model;

[0028] Figure 3 For the present utility model Figure 2 is an enlarged schematic diagram of the structure at A;

[0029] Figure 4 is a schematic diagram of the sectional structure of the low-emissivity glass in the present utility model.

[0030] The names of the parts referred to by the various numerical labels in the drawings are as follows: 1. Frame body; 2. Low-emissivity glass; 20. Glass substrate; 21. First dielectric layer; 22. First silver layer; 23. Second dielectric layer; 24. Second silver layer; 25. Third dielectric layer; 3. Tempered glass; 4. Thermal insulation layer; 5. Heat insulation film. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present utility model will be further described in detail below with reference to the drawings and embodiments.

[0032] Embodiment 1

[0033] An energy-saving low-emissivity coated glass, as Figures 1 - 4 shown, includes a frame body 1. Inside the frame body 1, there is a low-emissivity glass 2 and a tempered glass 3. The tempered glass 3 is located directly to the left of the low-emissivity glass 2. A thermal insulation layer 4 is provided between the low-emissivity glass 2 and the tempered glass 3. An insulation film 5 is bonded to the right side of the low-emissivity glass 2. Through the settings of the low-emissivity glass 2, the thermal insulation layer 4 and the insulation film 5, the glass can have a good heat insulation and heat preservation effect, effectively reducing the influence of the outdoor temperature on the indoor temperature, and thus realizing the energy-saving effect.

[0034] In this embodiment, the low-emissivity glass 2 includes a glass substrate 20, a first dielectric layer 21, a first silver layer 22, a second dielectric layer 23, a second silver layer 24, and a third dielectric layer 25, which are arranged in sequence from right to left. The low-emissivity glass 2 has a high visible light transmittance and a low solar radiation rate, and can effectively adjust the indoor light and temperature, improving the indoor comfort and energy-saving efficiency.

[0035] Specifically, the glass substrate 20 is float glass, and the thickness of the glass substrate 20 is 2-19 mm, having good light transmittance.

[0036] Furthermore, the first dielectric layer 21, the second dielectric layer 23, and the third dielectric layer 25 are all zinc oxide tin layers. The thickness of the first dielectric layer 21 is 10-100 nm, the thickness of the second dielectric layer 23 is 10-100 nm, and the thickness of the third dielectric layer 25 is 10-100 nm. Using zinc oxide tin as the dielectric layer has good optical properties and durability, can provide good adhesion and antioxidant properties, and protect the first silver layer 22 and the second silver layer 24 from corrosion and oxidation.

[0037] Furthermore, the first silver layer 22 and the second silver layer 24 are both pure silver layers. The thickness of the first silver layer 22 is 5-30 nm, and the thickness of the second silver layer 24 is 5-30 nm. The first silver layer 22 and the second silver layer 24 can provide efficient low-emissivity performance, that is, reflect infrared and ultraviolet rays in sunlight instead of absorbing them, thereby reducing the emissivity and thermal conductivity of the glass and improving the heat insulation effect of the glass. With only the first silver layer 22 and the second silver layer 24, the number of functional layers is small, the preparation process is relatively simple, the cost is low, the requirements for equipment are low, and it is easy to mass-produce and apply.

[0038] Furthermore, the heat-insulating layer 4 is an inert gas layer, and the inert gas is krypton. Krypton can reduce the heat conduction of the glass and improve the heat insulation and heat preservation performance of the glass.

[0039] A method for preparing an energy-saving low-emissivity glass 2 includes the following steps:

[0040] 1) Clean the glass substrate 20 with a mixed solution of deionized water and ethanol, then dry it with nitrogen, and place it in a vacuum magnetron sputtering device;

[0041] 2) Deposit the first dielectric layer 21, the first silver layer 22, the second dielectric layer 23, the second silver layer 24, and the third dielectric layer 25 on the glass substrate 20 in sequence. Among them, the first dielectric layer 21, the second dielectric layer 23, and the third dielectric layer 25 are sputtered using zinc oxide tin targets, and the first silver layer 22 and the second silver layer 24 are sputtered using pure silver targets. Control the deposition time and power during the deposition process to adjust the thickness of each layer. The specific parameters are as follows:

[0042] The first dielectric layer 21: The deposition time is 10 min, the power is 100 W, and the thickness is about 30 nm;

[0043] The first silver layer 22: The deposition time is 1 min, the power is 50 W, and the thickness is about 10 nm;

[0044] The second dielectric layer 23: The deposition time is 10 min, the power is 100 W, and the thickness is about 30 nm;

[0045] The second silver layer 24: The deposition time is 1 min, the power is 50 W, and the thickness is about 10 nm;

[0046] The third dielectric layer 25: The deposition time is 10 min, the power is 100 W, and the thickness is about 30 nm;

[0047] 3) Take out the deposited coated glass from the vacuum magnetron sputtering equipment, clean, dry and detect it to obtain the energy-saving low-emissivity glass 2, whose visible light transmittance is higher than 80% and the infrared reflectance is higher than 90%.

[0048] When the energy-saving low-emissivity coated glass of this embodiment is in use, the tempered glass 3 faces the outside, which can protect the low-emissivity glass 2. When sunlight shines on the glass, the first silver layer 22 and the second silver layer 24 in the low-emissivity glass 2 can provide high-efficiency low-emissivity performance, that is, reflect infrared rays and ultraviolet rays in sunlight instead of absorbing them, thereby reducing the emissivity and thermal conductivity of the glass and improving the heat insulation effect of the glass. The first dielectric layer 21, the second dielectric layer 23, and the third dielectric layer 25 can protect the first silver layer 22 and the second silver layer 24 from corrosion and oxidation. In cooperation with the thermal insulation layer 4 and the heat insulation film 5, the heat insulation effect of the glass can be further improved, effectively reducing the influence of the outdoor temperature on the indoor temperature, thereby achieving the effect of energy saving.

[0049] In short, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. An energy-saving low-emissivity coated glass, comprising a frame (1), characterized in that: The frame (1) is provided with low-emissivity glass (2) and tempered glass (3); the tempered glass (3) is located directly to the left of the low-emissivity glass (2); a heat-insulating layer (4) is provided between the low-emissivity glass (2) and the tempered glass (3); and a heat-insulating film (5) is bonded to the right side of the low-emissivity glass (2).

2. The energy-saving low-emissivity coated glass according to claim 1, characterized in that: The low-emissivity glass (2) comprises a glass substrate (20), a first dielectric layer (21), a first silver layer (22), a second dielectric layer (23), a second silver layer (24), and a third dielectric layer (25) which are arranged in sequence from right to left.

3. The energy-saving low-emissivity coated glass according to claim 2, characterized in that: The glass substrate (20) is float glass, and the thickness of the glass substrate (20) is 2-19 mm.

4. The energy-saving low-emissivity coated glass according to claim 2, characterized in that: The first dielectric layer (21), the second dielectric layer (23) and the third dielectric layer (25) are all zinc tin oxide layers; the thickness of the first dielectric layer (21) is 10-100 nm, the thickness of the second dielectric layer (23) is 10-100 nm, and the thickness of the third dielectric layer (25) is 10-100 nm.

5. The energy-saving low-emissivity coated glass according to claim 2, characterized in that: The first silver layer (22) and the second silver layer (24) are both pure silver layers; the thickness of the first silver layer (22) is 5-30 nm, and the thickness of the second silver layer (24) is 5-30 nm.

6. The energy-saving low-emissivity coated glass according to claim 1, characterized in that: The thermal insulation layer (4) is an inert gas layer, and the inert gas is krypton gas.

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