CN218234875U

CN218234875U - Energy-saving glass with adjustable solar heat gain coefficient and light transmittance

Info

Publication number: CN218234875U
Application number: CN202222367312.9U
Authority: CN
Inventors: 张卫星; 王飞; 张宏伟
Original assignee: Suzhou Best Glass Technology Co ltd
Current assignee: Suzhou Best Glass Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-01-06
Anticipated expiration: 2032-09-06

Abstract

The utility model relates to a solar energy gain thermal coefficient and energy-conserving glass of luminousness adjustable, including first toughened glass, automatically controlled device, low-E coated glass and the second toughened glass that stacks gradually the setting, low-E coated glass with second toughened glass forms the vacuum chamber through peripheral welding, low-E coated glass's Low-E coating film is located in the vacuum chamber. The application provides an energy-conserving glass has realized the function of dynamic adjustment visible light luminousness, solar energy coefficient of getting heat and shielding nature, and has very low heat transfer coefficient K value.

Description

Energy-saving glass with adjustable solar heat gain coefficient and light transmittance

Technical Field

The utility model belongs to the technical field of building door and window, in particular to solar energy gain of heat coefficient and energy-conserving glass of luminousness adjustable.

Background

Glass is widely used as building material in the fields of doors, windows and curtain walls. The traditional glass structure of the door and window curtain wall is a single-layer glass structure, and aims to achieve the effect that sunlight can penetrate into a room more in winter and less sunlight can penetrate into the room in summer. People like to adopt installation solar shading system, like outdoor tripe, indoor tripe, outdoor roll up curtain and bent arm or swing arm sunshade, adopt the mode separation of physics or not obstruct the mode that solar radiation heat and sunlight get into indoor through building periphery, its shortcoming is: high failure rate, inconvenient maintenance, short service life and the like.

In order to solve the problems, people improve glass structures for doors, windows and curtain walls, and adopt glass with a hollow structure or glass with a double-hollow structure, so that light rays entering a room are changed. However, the visible light transmittance and the solar heat gain coefficient of the existing hollow glass structure are fixed, and the solar heat gain coefficient and the visible light transmittance entering the room cannot be correspondingly adjusted.

Disclosure of Invention

The utility model provides a solve among the prior art door and window and for curtain glass construction visible light luminousness and solar energy get thermal coefficient fixed, can't correspond the problem that adjusts indoor solar energy and get thermal coefficient and visible light luminousness.

For solving above-mentioned technical problem, this application provides a solar energy obtains thermal coefficient and luminousness adjustable energy-saving glass, including first toughened glass, automatically controlled dimming device, low-E coated glass and the second toughened glass that stacks gradually the setting, low-E coated glass with second toughened glass forms the vacuum chamber through peripheral bonding, low-E coated glass's Low-E coating film is located in the vacuum chamber.

As a further improvement of the present application, the thickness of the vacuum chamber is 0.1mm to 0.4mm. Preferably, the thickness of the vacuum chamber is 0.15mm.

As a further improvement of this application, first toughened glass through first transparent sealing adhesive layer with automatically controlled device laminating of adjusting luminance is in the same place, automatically controlled device of adjusting luminance through second transparent sealing adhesive layer with Low-E coated glass laminating is in the same place.

As a further improvement of the application, the thickness of the first transparent sealant layer is 0.38 mm-2.28 mm, and the thickness of the second transparent sealant layer is 0.38 mm-2.28 mm. Preferably, the thickness of the first transparent sealant layer is 0.76mm, and the thickness of the second transparent sealant layer is 0.76mm.

As a further improvement of this application, first toughened glass with Low-E coated glass passes through peripheral seal structure and forms the first chamber that holds first holding the intracavity is close to peripheral seal structure's position department sets up the spacer bar, automatically controlled light modulation device sets up first holding intracavity and interval formation gas cavity, the peripheral edge butt of automatically controlled light modulation device the spacer bar. Wherein: the gas chamber can be filled with a proper amount of air and inert gases such as helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) or the mixture of the inert gases, and the arrangement of the gas chamber is favorable for reducing the heat conduction inside and outside the chamber and increasing the sound insulation property of the glass structure.

As the further improvement of this application, automatically controlled device of adjusting luminance through first transparent sealing glue layer with first toughened glass laminating is in the same place, automatically controlled device of adjusting luminance with the interval forms gas cavity between the Low-E coated glass.

As the further improvement of this application, automatically controlled device of adjusting luminance pass through the transparent sealant layer of second with Low-E coated glass pastes together, automatically controlled device of adjusting luminance with interval formation gas cavity between the first toughened glass.

As the further improvement of this application, automatically controlled device of adjusting luminance includes the automatically controlled device of adjusting luminance of first automatically controlled device and second, first automatically controlled device of adjusting luminance through first transparent sealing adhesive layer with first toughened glass laminating is in the same place, the automatically controlled device of adjusting luminance of second pass through the second transparent sealing adhesive layer with Low-E coated glass laminating is in the same place, first automatically controlled device of adjusting luminance with the interval forms gaseous cavity between the automatically controlled device of adjusting luminance of second.

As a further improvement of the application, the thickness of the gas chamber is 9 mm-22 mm. Preferably, the thickness of the gas chamber is 12mm.

As a further development of the application, the spacer forms a second receiving chamber for receiving a drying agent. The use of the drying agent avoids the problem that the service life of the electric control dimming device is affected by moisture.

As a further improvement of the application, a third sealing adhesive layer and a fourth sealing adhesive layer are respectively arranged between the spacing bar and the first toughened glass and between the spacing bar and the Low-E coated glass. Wherein: the sealing performance of the first containing cavity is guaranteed by the arrangement of the third sealing adhesive layer and the fourth sealing adhesive layer.

The beneficial effect of this application lies in:

1) The structural design of the vacuum chamber can effectively block heat conduction between the indoor space and the outdoor space;

2) The Low-E coating can selectively allow sunlight to pass through, effectively reflects near-infrared radiation energy and has a sun-shading effect;

3) The transparent sealing adhesive layer between the electric control dimming device and the first toughened glass and/or the Low-E coated glass can also block ultraviolet rays;

4) The light modulation device influences the adjustment of the solar heat gain coefficient and the transmissivity of visible light through the switching of a high-transmittance state, a light-color state and a shielding state.

Drawings

FIG. 1 is a schematic structural diagram of an energy-saving glass with adjustable solar heat gain coefficient and light transmittance of example 1;

FIG. 2 is a schematic structural diagram of an energy-saving glass with adjustable solar heat gain coefficient and light transmittance of example 2;

FIG. 3 is a schematic structural view of an energy saving glass with adjustable solar heat gain coefficient and light transmittance of example 3;

fig. 4 is a schematic structural diagram of the energy-saving glass with adjustable solar heat gain coefficient and light transmittance in example 4.

In the figure: 1. first tempered glass; 2. an electrically controlled dimming device; 3. Low-E coated glass; 4. second toughened glass; 5. a peripheral weld structure; 6. a vacuum chamber; 7. Low-E coating; 8. a first transparent sealant layer; 9. a second transparent sealant layer; 10. a perimeter seal arrangement; 11. a spacer bar; 12. a gas chamber; 13. a third sealant layer; 14. and a fourth sealant layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the following description of the present application will be made in detail and completely with reference to the specific embodiments and the accompanying drawings. It should be understood that the described embodiments are only a few, rather than all, examples and are not intended to limit the scope of the present disclosure. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," third, "fourth," and the like in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

Referring to the schematic structural diagram of fig. 1, the embodiment provides an energy-saving glass with adjustable solar heat gain coefficient and light transmittance, which includes a first tempered glass 1, an electrically controlled light modulator 2, a Low-E coated glass 3, and a second tempered glass 4, which are stacked in sequence, wherein the Low-E coated glass 3 and the second tempered glass 4 form a vacuum chamber 6 through a peripheral welding structure 5, a Low-E coating 7 of the Low-E coated glass 3 is located in the vacuum chamber 6, and the thickness of the vacuum chamber 6 is 0.15mm. First toughened glass 1 is in the same place through the laminating of first transparent sealing adhesive layer 8 with automatically controlled device 2 of adjusting luminance, and automatically controlled device 2 of adjusting luminance is in the same place through the laminating of second transparent sealing adhesive layer 9 and the Low-E coated glass 3's that Low-E coated film 7 carried on the back mutually one side surface. Wherein: the thickness of the first transparent sealing adhesive layer 8 is 0.76mm, the first transparent sealing adhesive layer 8 is prepared by PVB, the thickness of the second transparent sealing adhesive layer 9 is 0.76mm, the second transparent sealing adhesive layer 9 is prepared by PVB, and the peripheral welding structure 5 is formed by welding low-melting-point glass solder or metal solder.

It should be noted that the thickness of the vacuum chamber 6 in the present embodiment may be set to any value between 0.1mm and 0.4mm, not only 0.15 mm; the thickness of the first transparent sealant layer 8 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, and the first transparent sealant layer 8 may be made of, but not limited to, PVB; the thickness of the second transparent sealant layer 9 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, and the second transparent sealant layer 9 may be made of, but not limited to, PVB. The peripheral bond structure 5 may be bonded by, but is not limited to, low melting glass solder or metal solder. The thicknesses of the vacuum chamber 6, the first transparent sealing adhesive layer 8 and the second transparent sealing adhesive layer 9 are set according to the thicknesses of tempered glass, an electric control dimming device 2 and Low-E coated glass 3 which are conventionally used in the industry.

Example 2

Referring to the schematic structural diagram of fig. 2, the embodiment provides an energy-saving glass with adjustable solar heat gain coefficient and light transmittance, which includes a first tempered glass 1, an electrically controlled light modulator 2, a Low-E coated glass 3, and a second tempered glass 4 that are sequentially stacked, the Low-E coated glass 3 and the second tempered glass 4 form a vacuum chamber 6 through a peripheral welding structure 5, a Low-E coating 7 of the Low-E coated glass 3 is located in the vacuum chamber 6, and the thickness of the vacuum chamber 6 is 0.4mm. First toughened glass 1 and Low-E coated glass 3 form first holding chamber through peripheral seal structure 10, and the position department of the close vicinity of peripheral seal structure 10 sets up spacer 11 in first holding chamber, and automatically controlled light modulation device 2 sets up and forms gas chamber 12 at the interval in first holding chamber, and the peripheral edge butt spacer 11 of automatically controlled light modulation device. The electric control dimming device 2 is attached to the first toughened glass 1 through the first transparent sealing glue layer 8, and a gas chamber 12 is formed between the electric control dimming device 2 and the Low-E coated glass 3 at intervals. Preferably, the spacing bar 11 forms a second accommodating cavity for accommodating a drying agent, and a third sealant layer 13 and a fourth sealant layer 14 are respectively arranged between the spacing bar 11 and the first tempered glass 1 and the Low-E coated glass 3. Wherein: the thickness of the gas chamber 12 is 12mm, the thickness of the first transparent sealant layer 8 is 0.76mm, the first transparent sealant layer 8 is prepared from PVB, the peripheral welding structure 5 is formed by welding low-melting-point glass solder or metal solder, the peripheral sealing structure 10 is prepared from silicone sealant or polysulfide glue, the spacing strips 11 are prepared from aluminum or stainless steel, the third sealant layer 13 is prepared from butyl hot-melt sealant, and the fourth sealant layer 14 is prepared from butyl hot-melt sealant.

It should be noted that the thickness of the vacuum chamber 6 in the present embodiment may be set to any value between 0.1mm and 0.4mm, not only 0.4 mm; the thickness of the first transparent sealant layer 8 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, the first transparent sealant layer 8 may be prepared by, but not limited to, PVB, and the peripheral soldering structure 5 may be soldered by, but not limited to, a low-melting-point glass solder or a metal solder. The thicknesses of the vacuum chamber 6, the first transparent sealant layer 8 and the gas chamber 12 are set according to the thicknesses of tempered glass, the electric control dimming device 2 and Low-E coated glass 3 which are conventionally used in the industry. The perimeter seal 10 may be made from, but is not limited to, silicone sealants, polysulfide glues, and the like. The spacer bar 11 may be made of, but not limited to, aluminum, stainless steel, composite materials, etc., the third sealant layer 13 may be made of, but not limited to, butyl hot melt sealant, and the fourth sealant layer 14 may be made of, but not limited to, butyl hot melt sealant.

Example 3

Referring to the schematic structural diagram of fig. 3, the embodiment provides an energy-saving glass with adjustable solar heat gain coefficient and light transmittance, which includes a first tempered glass 1, an electrically controlled light-adjusting device 2, a Low-E coated glass 3, and a second tempered glass 4, which are sequentially stacked, wherein the Low-E coated glass 3 and the second tempered glass 4 form a vacuum chamber 6 through a peripheral welding structure 5, a Low-E coating 7 of the Low-E coated glass 3 is located in the vacuum chamber 6, and the thickness of the vacuum chamber 6 is 0.4mm. First toughened glass 1 and Low-E coated glass 3 form first holding chamber through peripheral seal structure 10, and the position department of the close vicinity of peripheral seal structure 10 sets up spacer 11 in first holding chamber, and automatically controlled light modulation device 2 sets up and forms gas chamber 12 at the interval in first holding chamber, and the peripheral edge butt spacer 11 of automatically controlled light modulation device. The electric control dimming device 2 is attached to one side surface of the Low-E coated glass 3 back to the Low-E coated film 7 through the second transparent sealing adhesive layer 9, and a gas chamber 12 is formed between the electric control dimming device 2 and the first toughened glass 1 at intervals. Preferably, the spacing bar 11 forms a second accommodating cavity for accommodating a drying agent, and a third sealant layer 13 and a fourth sealant layer 14 are respectively arranged between the spacing bar 11 and the first tempered glass 1 and the Low-E coated glass 3. Wherein: the thickness of the gas chamber 12 is 12mm, the second transparent sealant layer 9 is prepared from PVB, the thickness of the second transparent sealant layer 9 is 0.76mm, the peripheral welding structure 5 is formed by welding low-melting-point glass solder or metal solder, the peripheral sealing structure 10 is prepared from silicone sealant or polysulfide glue, the spacing strips 11 are prepared from aluminum or stainless steel, the third sealant layer 13 is prepared from butyl hot-melt sealant, and the fourth sealant layer 14 is prepared from butyl hot-melt sealant.

It should be noted that the thickness of the vacuum chamber 6 in the present embodiment may be set to any value between 0.1mm and 0.4mm, not only 0.4 mm; the thickness of the second transparent sealant layer 9 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, the second transparent sealant layer 9 may be made of, but not limited to, PVB, and the peripheral solder structure 5 may be formed by, but not limited to, soldering with low-melting-point glass solder or metal solder. The thicknesses of the vacuum chamber 6, the second transparent sealant layer 9 and the gas chamber 12 are set according to the thicknesses of tempered glass, the electric control dimming device 2 and the Low-E coated glass 3 which are conventionally used in the industry. The perimeter seal 10 may be made of, but is not limited to, silicone sealant, polysulfide glue, and the like. The spacer bar 11 may be made of, but not limited to, aluminum, stainless steel, composite material, etc., the third sealant layer 13 may be made of, but not limited to, butyl hot melt sealant, and the fourth sealant layer 14 may be made of, but not limited to, butyl hot melt sealant.

Example 4

Referring to the schematic structural diagram of fig. 4, the embodiment provides an energy-saving glass with adjustable solar heat gain coefficient and light transmittance, which includes a first tempered glass 1, an electrically controlled light-adjusting device 2, a Low-E coated glass 3, and a second tempered glass 4, which are sequentially stacked, wherein the Low-E coated glass 3 and the second tempered glass 4 form a vacuum chamber 6 through a peripheral welding structure 5, a Low-E coating 7 of the Low-E coated glass 3 is located in the vacuum chamber 6, and the thickness of the vacuum chamber 6 is 0.4mm. First toughened glass 1 and Low-E coated glass 3 form first holding chamber through peripheral seal structure 10, and the position department of the close vicinity of peripheral seal structure 10 sets up spacer 11 in first holding chamber, and automatically controlled light modulation device 2 sets up and forms gas chamber 12 at the interval in first holding chamber, and the peripheral edge butt spacer 11 of automatically controlled light modulation device. The electric control dimming device 2 comprises a first electric control dimming device 21 and a second electric control dimming device 22, the first electric control dimming device 21 is attached to the first toughened glass 1 through a first transparent sealing adhesive layer 8, the second electric control dimming device 22 is attached to the surface of one side, back to the Low-E coated glass 3, of the Low-E coated glass 7 through a second transparent sealing adhesive layer 9, and a gas cavity 12 is formed between the first electric control dimming device 21 and the second electric control dimming device 22 at intervals. Preferably, the spacing bar 11 forms a second accommodating cavity for accommodating a drying agent, and a third sealant layer 13 and a fourth sealant layer 14 are respectively arranged between the spacing bar 11 and the first tempered glass 1 and the Low-E coated glass 3. Wherein: the thickness of the gas chamber 12 is 12mm, the first transparent sealing adhesive layer 8 is prepared by PVB, the thickness of the first transparent sealing adhesive layer 8 is 0.76mm, the second transparent sealing adhesive layer 9 is prepared by PVB, the thickness of the second transparent sealing adhesive layer 9 is 0.76mm, the peripheral welding structure 5 is formed by welding low-melting-point glass solder or metal solder, the peripheral sealing structure 10 is prepared by silicone sealant or polysulfide glue, the spacing strip 11 is prepared by aluminum or stainless steel, the third sealing adhesive layer 13 is prepared by butyl hot-melt sealant, and the fourth sealing adhesive layer 14 is prepared by butyl hot-melt sealant.

It should be noted that the thickness of the vacuum chamber 6 in the present embodiment may be set to any value between 0.1mm and 0.4mm, not only 0.4 mm; the thickness of the first transparent sealing adhesive layer 8 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, and the first transparent sealing adhesive layer 8 may be made of, but not limited to, PVB; the thickness of the second transparent sealant layer 9 in the embodiment of the present application may be set to not only 0.76mm, but also any value between 0.38mm and 2.28mm, and the second transparent sealant layer 9 may be made of, but not limited to, PVB. The peripheral bond structure 5 may be bonded by, but is not limited to, low melting point glass solder or metal solder. The thicknesses of the vacuum chamber 6, the first transparent sealant layer 8, the second transparent sealant layer 9 and the gas chamber 12 are set according to the thicknesses of tempered glass, the electric control dimming device 2 and Low-E coated glass 3 which are conventionally used in the industry. The perimeter seal 10 may be made from, but is not limited to, silicone sealants, polysulfide glues, and the like. The spacer bar 11 may be made of, but not limited to, aluminum, stainless steel, composite material, etc., the third sealant layer 13 may be made of, but not limited to, butyl hot melt sealant, and the fourth sealant layer 14 may be made of, but not limited to, butyl hot melt sealant.

When the energy-saving glass with the adjustable solar heat gain coefficient and light transmittance is used, one side, close to the vacuum chamber 6, of the energy-saving glass with the adjustable solar heat gain coefficient and light transmittance (for example, the energy-saving glass with the adjustable solar heat gain coefficient and light transmittance in the

embodiments

1, 2, 3 and 4) is arranged on the indoor side, the vacuum chamber 6 is arranged to effectively block heat conduction between the indoor side and the outdoor side, the Low-E coating 7 allows sunlight to selectively penetrate through and effectively reflects near-infrared radiation energy, and a sun-shading effect is achieved, the electric control light-adjusting device 2 is attached to the first toughened glass 1 and/or the Low-E coating glass 3 in a transparent sealing adhesive layer mode, and the transparent sealing adhesive layer can block ultraviolet rays to a certain degree.

It should be noted that the electrically controlled light modulating device 2 of the present application can be bistable light modulating glass, light modulating film, PDLC light modulating glass, electrochromic light modulating glass, etc. The vacuum pressure stress of the vacuum chamber 6 formed by sealing the low-melting-point glass solder and the metal solder does not exceed 1Pa, and can be generally controlled to be 0.01 Pa-0.1 Pa.

To sum up, the energy-saving glass that this application provided, through the solar energy coefficient of getting heat and the visible light luminousness of energy-saving glass of automatically controlled light modulation device 2 adjustment, on the other hand vacuum chamber 6's configuration has prevented effectively that automatically controlled light modulation device 2 from absorbing the energy of solar energy after, to indoor secondary radiation for energy-saving glass structure has lower heat transfer coefficient and dynamic adjustable visible light luminousness and solar energy coefficient of getting heat. Finally, the functions of dynamically adjusting visible light transmittance, solar heat gain coefficient and shielding property are realized, and the heat transfer coefficient K value is very low.

Although the description is given in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the embodiments described herein may be combined as a whole to form other embodiments as would be understood by those skilled in the art.

The above list of details is only for the concrete description of the feasible embodiments of the present application, they are not intended to limit the scope of the present application, and all equivalent embodiments or modifications that do not depart from the technical spirit of the present application are intended to be included within the scope of the present application.

Claims

1. The utility model provides a solar energy gain of heat coefficient and energy-conserving glass of luminousness adjustable, includes the first toughened glass, automatically controlled light modulation device, low-E coated glass and the second toughened glass that stack gradually the setting, its characterized in that, low-E coated glass with second toughened glass forms the vacuum chamber through peripheral welding, low-E coated glass's Low-E coating film is located in the vacuum chamber.

2. The energy saving glass with adjustable solar heat gain coefficient and light transmittance according to claim 1, wherein the thickness of the vacuum chamber is 0.1 mm-0.4 mm.

3. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in claim 1, wherein the first tempered glass is attached to the electrically controlled dimming device through a first transparent sealant layer, and the electrically controlled dimming device is attached to the Low-E coated glass through a second transparent sealant layer.

4. The energy saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in claim 3, wherein the thickness of the first transparent sealant layer is 0.38 mm-2.28 mm, and the thickness of the second transparent sealant layer is 0.38 mm-2.28 mm.

5. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in claim 1, wherein the first tempered glass and the Low-E coated glass form a first accommodating cavity through a peripheral sealing structure, a spacer is disposed in the first accommodating cavity at a position close to the peripheral sealing structure, the electrically controlled light modulator is disposed in the first accommodating cavity and spaced to form a gas chamber, and a peripheral edge of the electrically controlled light modulator abuts against the spacer.

6. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance of claim 5, wherein the electrically controlled dimming device is attached to the first tempered glass through a first transparent sealant layer, and a gas chamber is formed between the electrically controlled dimming device and the Low-E coated glass at an interval.

7. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance of claim 5, wherein the electrically controlled dimming device is attached to the Low-E coated glass through a second transparent sealant layer, and a gas chamber is formed between the electrically controlled dimming device and the first tempered glass at an interval.

8. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in claim 5, wherein the electrically controlled light modulation device comprises a first electrically controlled light modulation device and a second electrically controlled light modulation device, the first electrically controlled light modulation device is attached to the first tempered glass through a first transparent sealant layer, the second electrically controlled light modulation device is attached to the Low-E coated glass through a second transparent sealant layer, and a gas chamber is formed between the first electrically controlled light modulation device and the second electrically controlled light modulation device at intervals.

9. The energy saving glass with adjustable solar heat gain coefficient and light transmittance according to any one of claims 5-8, wherein the thickness of the gas chamber is 9 mm-22 mm.

10. The energy saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in any one of claims 5-8, wherein the spacing bar forms a second containing cavity for containing a desiccant.

11. The energy-saving glass with adjustable solar heat gain coefficient and light transmittance as claimed in claim 10, wherein a third sealant layer and a fourth sealant layer are respectively arranged between the spacer bars and the first tempered glass and the Low-E coated glass.