CN115596326A - Hollow glass with ultralow heat transfer coefficient and manufacturing method thereof - Google Patents

Abstract

The invention belongs to the hollow glass with ultra-low heat transfer coefficient in the technical field of hollow glass for building, and also relates to a method for making the hollow glass with ultra-low heat transfer coefficient. The outer coated glass layer (1) uses triple-silver off-line coated glass with a single-sheet transmittance of over 72%, and the middle coated glass layer (3) uses double-silver off-line coated glass with a single-sheet transmittance of over 79%. The glass layer (5) is made of silver-free Low-E off-line coated glass with a single-sheet transmission of more than 88%, the outer coated glass layer (1), the middle coated glass layer (3), and the inner coated glass layer (5) They are all set to face the indoor side. The ultra-low heat transfer coefficient insulating glass and the manufacturing method thereof of the present invention can effectively ensure that the insulating glass product reaches the lowest heat transfer coefficient, and ensures the clarity of the product, meeting the requirements of passive houses and ultra-low energy consumption buildings.

Description

A kind of ultra-low heat transfer coefficient insulating glass and its manufacturing method

technical field

The invention belongs to the technical field of hollow glass for building, and more specifically relates to a hollow glass with ultra-low heat transfer coefficient, and also relates to a method for making the hollow glass with ultra-low heat transfer coefficient.

Background technique

Insulating glass is a high-performance sound-insulating and heat-insulating glass made of two (or three) pieces of glass, using a high-strength and high-air-tight composite adhesive to bond the glass pieces to an aluminum alloy frame containing a desiccant. In order to reduce the heat transfer coefficient of insulating glass, you can increase the number of air layers, change the type of coated glass, or fill it with argon. At present, the insulating glass in the cold or severe cold areas in the north is mostly a three-glass two-cavity structure. In recent years, concepts such as passive houses and ultra-low energy buildings require that the heat transfer coefficient of insulating glass be further reduced. The conventional three-glass, two-cavity, double-membrane hollow glass structure can no longer fully meet the requirements. However, if the two-cavity insulating glass is added to the three-cavity structure, the cost of design, production and installation will be greatly increased. Therefore, it is still necessary to tap the potential on the basis of three glasses and two cavities. Some people use ordinary off-line Low-E glass as the third layer, but due to the easy oxidation of off-line Low-E, it must be sealed in the hollow cavity, so that the film surface of the third layer of insulating glass is generally distributed on the second layer. , 4,5 faces or ground 2,3,5 faces, like this, just always have two membrane faces that the position is relative. In the process of processing, there must be a film surface to be pressed on the rollers of the hollow production line panel, which cannot be automated, and is likely to cause quality problems such as viscera and scratches. There are also manufacturers who use online Low-E for the third layer, and can place the film side on the sixth side. The production problem has been solved, but the online Low-E haze is relatively high, the light transmittance is only about 80%, the color is turbid and not neutral enough, and the market acceptance is low.

Contents of the invention

The technical problem to be solved by the present invention is: aiming at the deficiencies of the prior art, provide an ultra-thin structure that is simple in structure, effectively ensures that the product reaches the minimum heat transfer coefficient, and ensures the clarity of the product, and meets the needs of passive houses and ultra-low energy buildings. Low heat transfer coefficient insulating glass.

To solve the technical problems described above, the technical solution adopted by the present invention is:

The invention relates to an ultra-low heat transfer coefficient insulating glass, which comprises an outer coated glass layer, a middle coated glass layer, and an inner coated glass layer, a first cavity layer is formed between the outer coated glass layer and the middle coated glass layer, and the first cavity The cavity layer is filled with more than 90% argon gas by volume, and a second cavity layer is formed between the inner coated glass layer and the middle coated glass layer, and the second cavity layer is filled with more than 90% argon gas, and the outer coated glass layer Use triple-silver off-line coated glass with a single-sheet transmittance of more than 72%, use double-silver off-line coated glass with a single-sheet transmittance of more than 79% for the middle coated glass layer, and use a single-sheet transmittance of 88% for the inner coated glass layer For the above silver-free Low-E off-line coated glass, the film surfaces of the outer coated glass layer, the middle coated glass layer, and the inner coated glass layer are all set to face the indoor side.

The edges of the outer coated glass layer and the middle coated glass layer are connected by structural adhesive, and the inner side of the structural adhesive is also provided with tubular warm edge spacers arranged along the outer coated glass layer and the middle coated glass layer. Molecular sieves are filled in the warm edge spacers Each side of the warm edge spacer is respectively bonded to the corresponding glass layer by butyl glue, and the outer coated glass layer, middle coated glass layer, structural glue, warm edge spacer and butyl glue form the first cavity layer in a sealed state.

The edges of the inner coated glass layer and the middle coated glass layer are connected by structural glue, and the inner side of the structural glue is also provided with a tubular warm edge spacer arranged along the inner coated glass layer and the middle coated glass layer. Molecular sieves are filled in the warm edge spacer , each side of the warm edge spacer is respectively bonded to the corresponding glass layer by butyl glue, and the inner coated glass layer, the middle coated glass layer, structural glue, warm edge spacer and butyl glue form the second cavity layer in a sealed state.

The coating substrate of the triple-silver off-line coated glass with a single sheet transmittance of 72% for the described outer coated glass layer 1 is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the coated substrate of the outer coated glass layer is The membrane surface I is the innermost side of the glass.

The coating substrate of the double-silver off-line coating glass with a single sheet transmittance of more than 79% for the middle coating glass layer is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the film of the coating substrate of the middle coating glass layer Surface II is the indoor side of the glass.

The coating substrate of the silver-free Low-E off-line coated glass whose monolithic transmission is more than 88% for the described inner coated glass layer is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the coated substrate of the inner coated glass layer The membrane surface III is the innermost side of the glass.

When the outer coated glass layer is selected from ultra-clear glass, the ultra-clear glass is a toughened three-silver product with a single sheet transmittance of more than 72%; A temperable double-silver product with a single-sheet transmittance of more than 79%; when ultra-clear glass is used for the inner coated glass layer, the ultra-clear glass is an oxide-containing transparent conductive film with a single-sheet transmittance of more than 88%. Silver-free Low-E products can be tempered.

The invention also relates to a method for making insulating glass with an ultra-low heat transfer coefficient that can effectively ensure the minimum heat transfer coefficient of the insulating glass product and ensure the clarity of the product to meet the requirements of passive houses and ultra-low energy buildings.

The manufacturing steps of the manufacturing method of the ultra-low heat transfer coefficient hollow glass are:

S1. All the outer coated glass layer 1, middle coated glass layer 3, and inner coated glass layer 5 are cut, edged and tempered, and placed in the insulating glass production line in sequence for standby. Fill molecular sieves to form a spacer frame for standby;

S2. Warm edge spacer bars 8 are arranged around the edges of the inner coated glass layer 5 and the middle coated glass layer 3, each side of the warm edge spacer bar 8 is coated with butyl glue 7 respectively, and the inner coated glass is realized through the butyl glue 7 on both sides Layer 5 is connected to the middle coated glass layer 3, and the inner coated glass layer 5, the middle coated glass layer 3, the structural adhesive 6, the warm edge spacer 8 and the butyl glue 7 form the second cavity layer 4 in a sealed state, and the second cavity The cavity layer 4 is filled with argon to complete the inner coated glass layer 5 and the middle coated glass layer 3;

S3. Warm edge spacer strips 8 are arranged around the edges of the outer coated glass layer 1 and the middle coated glass layer 3, each side of the warm edge spacer bar 8 is coated with butyl glue 7 respectively, and the outer coated glass is realized through the butyl glue 7 on both sides Layer 1 is connected to the middle coated glass layer 3, the outer coated glass layer 1, the middle coated glass layer 3, the structural adhesive 6, the warm edge spacer 8 and the butyl glue 7 form the first cavity layer 2 in a sealed state, the first cavity The cavity layer 2 is filled with argon to complete the outer coated glass layer 1 and the middle coated glass layer 3;

S4. Apply structural glue to the outer ring of the warm edge spacer on the inner coated glass layer and the edge of the middle coated glass layer, and apply structural glue to the outer ring of the warm edge spacer on the outer coated glass layer and the edge of the middle coated glass layer. Heat transfer coefficient insulating glass.

The outer coated glass layer uses triple-silver off-line coated glass with a single-sheet transmittance of more than 72%, the middle coated glass layer uses double-silver off-line coated glass with a single-sheet transmittance of more than 79%, and the inner coated glass layer uses Silver-free Low-E off-line coated glass with a single-sheet transmission of more than 88%.

After the structural adhesive is applied, the completed ultra-low heat transfer coefficient insulating glass is transferred to the turnover frame to wait for the structural adhesive to cure, and the production is completed after curing.

Adopt technical scheme of the present invention, working principle and beneficial effect are as follows:

The ultra-low heat transfer coefficient insulating glass and its manufacturing method described in the present invention, the triple glass of the insulating glass uses coated glass, and the thickness of the cavity layer is optimized and the direction of each film surface is adjusted to greatly reduce the heat transfer coefficient of the insulating glass , to meet the performance requirements of passive houses and ultra-low energy buildings. And by using silver-free Low-E as the coated glass on the indoor side, it solves the problem that the three-layer off-line Low-E film cannot be processed automatically, and realizes the theoretical best solution that the direction of the film surface faces the indoor, further reducing Improve the heat transfer coefficient; eliminate the problem of cloudy color and high haze when using online Low-E, and greatly improve its practicability. It can be produced automatically in large quantities and can be put into use immediately. The ultra-low heat transfer coefficient insulating glass and the manufacturing method thereof of the present invention can effectively ensure that the insulating glass product reaches the lowest heat transfer coefficient, and ensures the clarity of the product, meeting the requirements of passive houses and ultra-low energy consumption buildings.

Description of drawings

The following is a brief description of the contents expressed in the drawings of this manual and the marks in the drawings:

Fig. 1 is a schematic cross-sectional structural view of the ultra-low heat transfer coefficient insulating glass of the present invention;

The marks in the drawings are: 1. Outer coated glass layer; 2. First cavity layer; 3. Middle coated glass layer; 4. Second cavity layer; 5. Inner coated glass layer; 6. Structural adhesive; 7 , Butyl rubber; 8, Warm edge spacer; 9, Membrane surface Ⅰ; 10, Membrane surface Ⅱ; 11, Membrane surface Ⅲ; 12, Molecular sieve.

detailed description

Below with reference to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention, such as the shape, structure, mutual position and connection relationship between the various parts, the role and working principle of the various parts, etc., will be further described. Detailed instructions:

As shown in accompanying drawing 1, the present invention is a kind of ultra-low heat transfer coefficient hollow glass, comprising outer coated glass layer 1, middle coated glass layer 3, inner coated glass layer 5, outer coated glass layer 1 and middle coated glass layer 3 A first cavity layer 2 is formed between them, and more than 90% of argon gas is filled in the first cavity layer 2, and a second cavity layer 4 is formed between the inner coated glass layer 5 and the middle coated glass layer 3, and the second cavity Layer 4 is filled with argon gas with a volume percentage of more than 90%. The outer coated glass layer 1 uses triple-silver off-line coated glass with a single-sheet transmittance of more than 72%. The middle coated glass layer 3 uses a single-sheet transmittance of 79%. For the above double-silver off-line coated glass, the inner coated glass layer 5 is selected from silver-free Low-E off-line coated glass with a single sheet transmission rate of more than 88%, and the outer coated glass layer 1, the middle coated glass layer 3, and the inner coated glass layer 5 The membrane surfaces are all set towards one side of the room. The above structure proposes an improved technical solution aiming at the deficiencies in the prior art. In the structure of the present invention, the outer coated glass layer 1, the middle coated glass layer 3, and the inner coated glass layer 5 of the insulating glass are all made of coated glass, and by optimizing the thickness of the cavity layer and adjusting the respective membrane surfaces of the three layers of glass direction, greatly reducing the heat transfer coefficient of insulating glass, effectively improving the performance of insulating glass, and meeting the performance requirements of passive houses and ultra-low energy buildings. And by using silver-free Low-E as the coated glass on the indoor side, it solves the problem that the three-layer off-line Low-E film cannot be processed automatically, and realizes the theoretical best solution that the direction of the film surface faces the indoor, further reducing Improve the heat transfer coefficient; eliminate the problem of cloudy color and high haze when using online Low-E, and greatly improve its practicability. It can be produced automatically in large quantities and can be put into use immediately. The ultra-low heat transfer coefficient insulating glass of the present invention has a simple structure, effectively ensures that the product reaches the lowest heat transfer coefficient, and ensures the clarity of the product, meeting the requirements of passive houses and ultra-low energy consumption buildings.

The edges of the outer coated glass layer 1 and the middle coated glass layer 3 are connected by structural adhesive 6, and the inner side of the structural adhesive 6 is also provided with tubular warm edge spacers 8 arranged around the outer coated glass layer 1 and the middle coated glass layer 3, Molecular sieves are filled in the warm edge spacer 8, and each side of the warm edge spacer 8 is adhered to the corresponding glass layer through butyl glue 7, the outer coated glass layer 1, the middle coated glass layer 3, the structural glue 6, the warm edge spacer 8 and The butyl rubber 7 forms the first cavity layer 2 in a sealed state. The inner side coated glass layer 5 and the middle coated glass layer 3 are connected by structural glue 6 around the edge, and the inner side of the structural glue 6 is also provided with tubular warm edge spacers 8 arranged along the inner side coated glass layer 5 and the middle coated glass layer 3. The warm edge spacer 8 is filled with molecular sieves, and each side of the warm edge spacer 8 is adhered to the corresponding glass layer by butyl glue 7, the inner coated glass layer 5, the middle coated glass layer 3, the structural adhesive 6, and the warm edge spacer 8 Form the second cavity layer 4 in a sealed state with butyl glue 7. With the above structure, the outer coated glass layer 1 and the middle coated glass layer 3 can be combined conveniently and reliably, and the inner coated glass layer 5 and the middle coated glass layer 3 can be combined conveniently and reliably to form an overall glass structure.

The coating substrate of the triple-silver off-line coated glass with a single sheet transmittance of 72% for the outer coated glass layer 1 is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the coated substrate of the outer coated glass layer 1 The membrane surface I9 is the innermost side of the glass. The coating substrate of the double-silver off-line coating glass with a single sheet transmittance of more than 79% for the middle coating glass layer 3 is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the coating substrate of the middle coating glass layer 3 The membrane surface II10 is the indoor side of the glass. The coating substrate of the silver-free Low-E off-line coated glass whose thickness is greater than 6mm is ultra-clear glass or laminated glass, and the coated film of the inside coated glass layer 5 The film surface III11 of the substrate is the innermost side of the glass. In the above structure, the overall performance of the insulating glass can be effectively improved through the selection of materials for the outer coated glass layer 1 , the middle coated glass layer 3 , and the inner coated glass layer 5 .

When the outer coated glass layer 1 is selected from ultra-clear glass, the ultra-clear glass is a temperable three-silver product with a single sheet transmittance of more than 72%; The glass is a toughened double-silver product with a single-sheet transmittance of more than 79%; when the inner coated glass layer 5 is made of ultra-clear glass, the ultra-clear glass is an oxide-containing transparent glass with a single-sheet transmittance of more than 88%. Temperable silver-free Low-E products of conductive films.

The invention also relates to a method for making insulating glass with an ultra-low heat transfer coefficient that can effectively ensure the minimum heat transfer coefficient of the insulating glass product and ensure the clarity of the product to meet the requirements of passive houses and ultra-low energy buildings.

The manufacturing steps of the manufacturing method of the ultra-low heat transfer coefficient hollow glass are:

S1. All the outer coated glass layer 1, middle coated glass layer 3, and inner coated glass layer 5 are cut, edged and tempered, and placed in the insulating glass production line in sequence for standby. Fill molecular sieves to form a spacer frame for standby;

S2. Warm edge spacer bars 8 are arranged around the edges of the inner coated glass layer 5 and the middle coated glass layer 3, each side of the warm edge spacer bar 8 is coated with butyl glue 7 respectively, and the inner coated glass is realized through the butyl glue 7 on both sides Layer 5 is connected to the middle coated glass layer 3, and the inner coated glass layer 5, the middle coated glass layer 3, the structural adhesive 6, the warm edge spacer 8 and the butyl glue 7 form the second cavity layer 4 in a sealed state, and the second cavity The cavity layer 4 is filled with argon to complete the inner coated glass layer 5 and the middle coated glass layer 3;

S3. Warm edge spacer strips 8 are arranged around the edges of the outer coated glass layer 1 and the middle coated glass layer 3, each side of the warm edge spacer bar 8 is coated with butyl glue 7 respectively, and the outer coated glass is realized through the butyl glue 7 on both sides Layer 1 is connected to the middle coated glass layer 3, the outer coated glass layer 1, the middle coated glass layer 3, the structural adhesive 6, the warm edge spacer 8 and the butyl glue 7 form the first cavity layer 2 in a sealed state, the first cavity The cavity layer 2 is filled with argon to complete the outer coated glass layer 1 and the middle coated glass layer 3;

S4. Apply structural glue 6 on the outer ring of the warm edge spacer 8 on the edge of the inner coated glass layer 5 and the middle coated glass layer 3, and apply the outer ring of the warm edge spacer 8 on the outer ring of the outer coated glass layer 1 and the edge of the middle coated glass layer 3 Structural adhesive 6, the production of ultra-low heat transfer coefficient insulating glass.

The outer coated glass layer 1 selects triple-silver off-line coated glass with a single-sheet transmittance of more than 72%, the middle coated glass layer 3 selects double-silver off-line coated glass with a single-sheet transmittance of more than 79%, and the inner coated glass Layer 5 uses silver-free Low-E off-line coated glass with a single-sheet transmission of over 88%.

After the structural adhesive 6 is applied, the completed ultra-low heat transfer coefficient insulating glass is transferred to the turnover frame to wait for the structural adhesive 6 to cure, and the production is completed after curing.

The insulating glass of the present invention, when implemented, the outer coated glass layer can be composed of single silver, double silver or triple silver Low-E coated glass with different visible light transmittance and reflectivity, and its coated substrates include but are not limited to various Thickness of white glass, ultra-clear or laminated products composed of them. Generally, products with different light transmittance and different color reflection effects can be selected according to the requirements of lighting and appearance effects. During implementation, the first cavity layer is filled with 90% argon gas in the space surrounded by the warm edge spacer and structural glue, and its thickness is 12-14mm, preferably 14mm. During implementation, the intermediate coating glass layer is composed of highly transparent double-silver or triple-silver Low-E glass. The color of the coated substrate is generally white glass or ultra-white, and the thickness can be adjusted according to needs. Its transmittance is not less than 70%, and the reflectance is not more than 10%, and the transmission color is neutral. During implementation, the second cavity layer is filled with 90% argon gas in the space surrounded by the warm edge spacer and structural glue, and its thickness is 12-18mm, preferably 14 or 16mm. During implementation, the inner coated glass layer is composed of silver-free Low-E with high visible light transmittance, and its coated substrates include but are not limited to various thicknesses of white glass, ultra-clear or laminated products composed of them. And the film surface of the silver-free Low-E should face the indoor surface and be in contact with the indoor air. During implementation, the membrane surfaces of the three-layer coated glass all face the interior surface.

The insulating glass with ultra-low heat transfer coefficient and its manufacturing method described in the present invention can effectively achieve the following technical effects: 1. On the basis of the basic structure of the double-cavity insulating glass, the three-membrane structure is used to greatly reduce such The heat transfer coefficient of glass. 2. Through theoretical calculation and actual testing, it is determined that the best air layer thickness to make the heat transfer coefficient reach the lowest value is 14mm. 3. Silver-free Low-E products are used for the inner coated glass, and the film surface is set on the innermost side, so that the heat transfer coefficient of the entire glass combination reaches the lowest value. It also solves the problem that the ordinary off-line Low-E cannot be automatically processed and the quality is difficult to guarantee. It avoids the problem of high haze and poor permeability when using online Low-E. 4. Through the optimized selection of the outer coated glass and the middle coated glass, the minimum heat transfer coefficient of this double-cavity insulating glass can reach 0.64W/m ² ·k, which is much smaller than the 0.8W/m ² ·k required by the passive house. And it can still guarantee a visible light transmittance of more than 50%. 5. The ultra-low heat transfer coefficient double-cavity hollow glass and its combination method provided by the present invention, if you choose toughened coating products, you can perform single-curved and double-curved tempered processing and hot bending processing to meet various requirements. The use requirements of the shape greatly reduce the limitation of the use range.

The ultra-low heat transfer coefficient insulating glass and its manufacturing method described in the present invention, the triple glass of the insulating glass uses coated glass, and the thickness of the cavity layer is optimized and the direction of each film surface is adjusted to greatly reduce the heat transfer coefficient of the insulating glass , to meet the performance requirements of passive houses and ultra-low energy buildings. And by using silver-free Low-E as the coated glass on the indoor side, it solves the problem that the three-layer off-line Low-E film cannot be processed automatically, and realizes the theoretical best solution that the direction of the film surface faces the indoor, further reducing Improve the heat transfer coefficient; eliminate the problem of cloudy color and high haze when using online Low-E, and greatly improve its practicability. It can be produced automatically in large quantities and can be put into use immediately. The ultra-low heat transfer coefficient insulating glass and the manufacturing method thereof of the present invention can effectively ensure that the insulating glass product reaches the lowest heat transfer coefficient, and ensures the clarity of the product, meeting the requirements of passive houses and ultra-low energy consumption buildings.

The present invention has been exemplarily described above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above-mentioned manner, as long as various improvements are adopted in the method concept and technical solutions of the present invention, or the present invention is converted without improvement. The ideas and technical solutions of the invention that are directly applied to other occasions are within the protection scope of the present invention.

Claims (10)

1. A hollow glass with an ultra-low heat transfer coefficient, characterized in that: it comprises an outer coated glass layer (1), a middle coated glass layer (3), an inner coated glass layer (5), an outer coated glass layer (1) and a middle A first cavity layer (2) is formed between the coated glass layers (3), and more than 90% of argon gas is filled in the first cavity layer (2), and the inner coated glass layer (5) and the middle coated glass layer (3) A second cavity layer (4) is formed between them, and the second cavity layer (4) is filled with argon gas with a volume percentage of more than 90%. Three-silver off-line coated glass, the middle coated glass layer (3) adopts double-silver off-line coated glass with a single-sheet transmittance of more than 79%, and the inner coated glass layer (5) uses a single-sheet transmittance of more than 88% silver-free Low -E off-line coated glass, the film surfaces of the outer coated glass layer (1), the middle coated glass layer (3), and the inner coated glass layer (5) are all set towards the indoor side. 2. The ultra-low heat transfer coefficient insulating glass according to claim 1, characterized in that: the outer coated glass layer (1) and the middle coated glass layer (3) are connected by structural glue (6) around the edge, and the structure The inner side of the glue (6) is also provided with a tubular warm edge spacer (8) arranged along the outer coated glass layer (1) and the middle coated glass layer (3). The warm edge spacer (8) is filled with molecular sieves, and the warm edge spacer (8) Each side is respectively adhered to the corresponding glass layer by butyl glue (7), outer coated glass layer (1), middle coated glass layer (3), structural adhesive (6), warm edge spacer (8) and Ding The glue base (7) forms the first cavity layer (2) in a sealed state. 3. The ultra-low heat transfer coefficient hollow glass according to claim 2, characterized in that: the inner coated glass layer (5) and the middle coated glass layer (3) are connected by structural glue (6) around the edge, and the structure The inner side of the glue (6) is also provided with tubular warm edge spacers (8) arranged along the inner coated glass layer (5) and the middle coated glass layer (3). The warm edge spacers (8) are filled with molecular sieves, and the warm edge spacers (8) Each side is respectively bonded to the corresponding glass layer by butyl glue (7), the inner coated glass layer (5), the middle coated glass layer (3), the structural adhesive (6), the warm edge spacer (8) and The butyl rubber (7) forms the second cavity layer (4) in a sealed state. 4. The ultra-low heat transfer coefficient insulating glass according to claim 3, characterized in that: the coating substrate of triple-silver off-line coated glass with a single sheet transmittance of 72% is selected for the outer coated glass layer (1). The sheet is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the film surface I (9) of the coated substrate of the outer coated glass layer (1) is the innermost side of the glass. 5. The ultra-low heat transfer coefficient insulating glass according to claim 4, characterized in that: said intermediate coated glass layer (3) is made of double-silver off-line coated glass with a single sheet transmittance of more than 79%. The substrate is ultra-clear glass or laminated glass with a thickness greater than 6mm, and the film surface II (10) of the coated substrate of the intermediate coated glass layer (3) is the indoor side of the glass. 6. The ultra-low heat transfer coefficient insulating glass according to claim 5, characterized in that: the inner coated glass layer (5) is selected from a single piece of silver-free Low-E off-line coated glass with a transmission rate of more than 88%. The coated substrate is ultra-clear glass or laminated glass with a thickness greater than 6 mm, and the film surface III (11) of the coated substrate of the inner coated glass layer (5) is the innermost side of the glass. 7. The ultra-low heat transfer coefficient insulating glass according to claim 1, characterized in that: when ultra-clear glass is selected as the outer coated glass layer (1), the ultra-clear glass has a single sheet transmittance of 72% or more The temperable triple-silver product; when the middle coated glass layer (3) selects ultra-clear glass, the ultra-clear glass is a temperable double-silver product with a single sheet transmittance of more than 79%; the inner coated glass layer (5) When ultra-clear glass is selected, the ultra-clear glass is a temperable silver-free Low-E product with an oxide-containing transparent conductive film with a single sheet transmittance of more than 88%. 8. A method for manufacturing an ultra-low heat transfer coefficient insulating glass, characterized in that: the manufacturing steps of the ultra-low heat transfer coefficient insulating glass are: S1. All outer coated glass layers (1), middle coated glass layers (3), and inner coated glass layers (5) are cut, edged and tempered and then placed in the insulating glass production line for standby. Argon gas is connected to the equipment. Molecular sieves are filled in the warm edge spacer bar (8) to form a spacer frame for subsequent use; S2. Warm edge spacer strips (8) are arranged around the edge of the inner coated glass layer (5) and the middle coated glass layer (3), and each side of the warm edge spacer strip (8) is coated with butyl glue (7) respectively. The butyl glue (7) on the side realizes the connection between the inner coated glass layer (5) and the middle coated glass layer (3), the inner coated glass layer (5), the middle coated glass layer (3), the structural glue (6), the warm edge The spacer (8) and butyl glue (7) form the second cavity layer (4) in a sealed state, and the second cavity layer (4) is filled with argon gas to complete the inner coated glass layer (5) and the intermediate coated glass layer layer(3); S3. Warm edge spacers (8) are arranged around the outer coated glass layer (1) and the middle coated glass layer (3), and each side of the warm edge spacer (8) is coated with butyl glue (7). The butyl glue (7) on the side realizes the connection between the outer coated glass layer (1) and the middle coated glass layer (3), the outer coated glass layer (1), the middle coated glass layer (3), the structural adhesive (6), the warm edge Spacer strips (8) and butyl glue (7) form the first cavity layer (2) in a sealed state, and the first cavity layer (2) is filled with argon gas to complete the outer coated glass layer (1) and the middle coated glass layer layer(3); S4. Structural glue (6) is applied on the outer ring of the warm edge spacer (8) at the edge of the inner coated glass layer (5) and the middle coated glass layer (3), and the outer coated glass layer (1) and the middle coated glass layer ( 3) Structural glue (6) is applied to the outer ring of the warm edge spacer (8) on the edge to complete the ultra-low heat transfer coefficient insulating glass. 9. The manufacturing method of ultra-low heat transfer coefficient insulating glass according to claim 8, characterized in that: the outer coated glass layer (1) is made of triple-silver off-line coated glass with a single sheet transmittance of 72% or more , the middle coated glass layer (3) uses double-silver off-line coated glass with a single-sheet transmittance of more than 79%, and the inner coated glass layer (5) uses a single-sheet transmittance of more than 88% silver-free Low-E offline coated glass . 10. The manufacturing method of ultra-low heat transfer coefficient insulating glass according to claim 8 or 9, characterized in that: after the structural glue (6) is applied, the completed ultra-low heat transfer coefficient insulating glass is transferred to the turnover frame Wait for the structural adhesive (6) to cure, and complete the fabrication after curing.

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