A suspended membrane type hollow energy-saving glass based on flexible spacer and air pressure balance

Abstract

This utility model discloses a suspended membrane insulated glass based on flexible spacers and air pressure balance, relating to the field of suspended membrane insulated glass technology. It includes paired side flexible spacers and bottom flexible spacers, with multiple pairs of side flexible spacers forming a U-shaped frame structure distributed on three sides of two glass layers. A bottom flexible spacer is sandwiched between the other two glass layers. Each of the side and bottom flexible spacers has an interlocking structure on its opposing side for holding the suspended membrane. The outer side of the side flexible spacers has a groove for inserting the glass. The bottom flexible spacer has a hollow inner cavity communicating with the outside, filled with a molecular sieve desiccant. This utility model, through the mechanical interlocking of the interlocking structure and the synergistic effect of elastic deformation, ensures the membrane layer remains stable under external force, preventing displacement or deformation. The design of the molecular sieve desiccant and the air permeable channel effectively balances the internal and external air pressure difference, avoiding the resulting deformation of the suspended membrane.

Description

Technical Field

[0001] This utility model relates to the field of suspended membrane insulated glass technology, and in particular to a suspended membrane insulated energy-saving glass based on the balance between flexible spacers and air pressure. Background Technology

[0002] Low-E glass, as a representative of traditional energy-saving glass, has had its performance limits surpassed by the new generation of suspended membrane insulated glass technology. Although both utilize a hollow cavity structure, their technological implementation paths differ fundamentally: suspended membrane energy-saving glass, through the combination of two substrate glass panes and single / multi-layer polymer functional films, can construct a "two-glass multi-cavity" composite structure (such as a two-glass triple-cavity system), significantly reducing the use of at least one glass substrate compared to the conventional "triple-glass two-cavity" configuration of Low-E glass. This technological innovation not only reduces material consumption but also makes it a key solution for building energy-saving retrofits, particularly advantageous in upgrading existing building curtain walls (without replacing the window frame system) and optimizing the load-bearing capacity of super high-rise buildings. The core technology of suspended membrane insulated glass lies in using a polymer spacer system and special sealant to suspend a flexible low-emissivity composite film (such as a PET film with an infrared reflective coating) between the double-glass cavities, forming a "two-glass double-cavity" structure with thermal insulation properties. To further enhance thermal insulation performance and reduce the heat transfer coefficient, a multi-layer film sealed cavity structure is employed to achieve a step-by-step improvement in thermal insulation performance. However, existing technologies have several drawbacks: First, current designs commonly use metal spacers, such as aluminum alloys or stainless steel, which have high thermal conductivity. Due to the high thermal conductivity of aluminum alloys or stainless steel, the membrane boundary is prone to creep displacement under long-term humid and hot conditions. Second, the membrane layer can also shift or deform under external forces. Third, pressure imbalance in the cavity under temperature variations can also cause membrane deformation, affecting its service life. Furthermore, these interface failures and membrane deformations not only cause sealing failures and condensation risks, but also lead to optical distortion due to prestress relaxation, resulting in visible rainbow-like defects that severely impact architectural aesthetics. Utility Model Content

[0003] The purpose of this invention is to provide a suspended membrane type insulated energy-saving glass based on flexible spacer bar and air pressure balance, which solves the problem mentioned in the background art that the suspended membrane is easily affected by external factors, resulting in displacement or deformation.

[0004] The present invention adopts the following technical solution:

[0005] This utility model discloses a suspended membrane type insulated energy-saving glass based on flexible spacer strips and air pressure balance, including a pair of flexible spacer strips arranged one above the other, multiple pairs of flexible spacer strips forming a U-shaped frame structure, a suspended membrane sandwiched between each pair of flexible spacer strips, and the side of each pair of flexible spacer strips facing away from the suspended membrane being embedded in the edge of the glass.

[0006] A bottom flexible spacer is provided on one side of the U-shaped frame structure composed of multiple pairs of side flexible spacers, with each bottom flexible spacer being sandwiched between the glass and the suspension membrane.

[0007] Each pair of the side flexible spacers and each pair of bottom flexible spacers are provided with an interlocking structure on their opposite sides, and the edge of the suspension membrane is clamped between the corresponding interlocking structures on both sides.

[0008] The bottom flexible spacer has a hollow inner cavity that communicates with the cavity between the glass and the suspension membrane and with the outside. Molecular sieve desiccant is placed inside the hollow inner cavity of the bottom flexible spacer.

[0009] Preferably, each of the flexible spacers has a slot on the side facing away from the suspension membrane, and the edge of the glass is fitted into the slot.

[0010] Preferably, both the side flexible spacer and the bottom flexible spacer are hollow structures with multiple independent chambers;

[0011] The flexible spacer strip is provided with multiple first hollow chambers;

[0012] The bottom flexible spacer strip is provided with multiple second hollow cavities, and the molecular sieve desiccant is disposed in the second hollow cavities.

[0013] Preferably, both the first hollow chamber and the second hollow chamber are cuboid structures;

[0014] The bottom flexible spacer strip has multiple ventilation channels that penetrate its body. One end of each ventilation channel is connected to the cavity between the glass and the suspension membrane, and the other end of each ventilation channel is connected to the outside.

[0015] The ventilation channels are located on two side walls of the second hollow chamber that are perpendicular to the suspension membrane.

[0016] Preferably, the interlocking structure includes a frustum and a conical groove, the frustum and the conical groove are arranged alternately and evenly spaced, the frustum and the conical groove on the two mating interlocking structures are interlocked with each other, and the edge of the suspension membrane is clamped between the interlocking frustum and the conical groove.

[0017] Preferably, the axially extending sidewall inclination angle of the truncated cone is 15°-30°, and the sidewall inclination angle of the conical groove matches the sidewall inclination angle of the truncated cone.

[0018] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0019] 1. In this utility model, the paired flexible spacer strips on the side and bottom are designed with an interlocking structure on the contact surface with the suspended membrane. Through the synergistic effect of mechanical interlocking and elastic deformation, the membrane layer can be ensured to remain stable when subjected to external force and is not prone to displacement or deformation.

[0020] 2. The bottom flexible spacer is designed as a hollow multi-cavity structure, with molecular sieve desiccant integrated into the cavity. The bottom flexible spacer is also equipped with a breathable channel, which enables the hollow glass cavity to form a controllable air pressure balance system with the external environment. This effectively balances the internal and external air pressure difference and avoids the problem of suspension deformation caused by air pressure difference.

[0021] 3. The flexible spacer strips on the sides and bottom of this utility model are made of flexible composite polymer materials with low thermal conductivity. While maintaining the structural strength, the thermal conductivity is significantly reduced, avoiding the phenomenon of creep displacement of the membrane boundary due to heat. In addition, it can also reduce the weight of the component.

[0022] 4. The main body of the flexible spacer is designed as a hollow multi-cavity structure. A slot is provided on its load-bearing side, and the glass can be pushed into the slot to achieve glue-free pre-fixation of the glass substrate. Then, a secondary seal is formed by silicone structural adhesive to form a double fixing mechanism. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the existing suspended membrane insulated glass structure mentioned in the background section. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the existing suspended membrane insulated glass structure mentioned in the background section. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the suspended membrane type insulated energy-saving glass structure based on the balance of flexible spacers and air pressure of this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the suspended membrane type insulated energy-saving glass based on the balance of flexible spacers and air pressure of this utility model after removing the bottom flexible spacer.

[0028] Figure 5This is a schematic diagram of the edge flexible spacer in the suspended membrane type insulated energy-saving glass based on the balance between flexible spacers and air pressure of this utility model.

[0029] Figure 6 This is a schematic diagram of the bottom flexible spacer in the suspended membrane type insulated energy-saving glass based on the balance between flexible spacers and air pressure of this utility model.

[0030] Figure 7 This is a schematic diagram of the interlocking structure in the suspended membrane insulated energy-saving glass based on the balance of flexible spacers and air pressure of this utility model.

[0031] Figure 8 This is a schematic diagram of the interlocking structure of the suspended membrane in the suspended membrane type insulated energy-saving glass based on the flexible spacer and air pressure balance of this utility model.

[0032] Explanation of reference numerals in the attached drawings: 1. Side flexible spacer; 1-1. Slot; 1-2. First hollow chamber; 2. Glass; 3. Suspended membrane; 4. Bottom flexible spacer; 4-1. Ventilation channel; 4-2. Second hollow chamber; 5. Molecular sieve desiccant; 6. Interlocking structure; 6-1. Frustum; 6-2. Conical groove. Detailed Implementation

[0033] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] like Figure 3 and Figure 4 As shown, this embodiment discloses a suspended membrane type insulated energy-saving glass based on flexible spacers and air pressure balance, including a pair of flexible spacers 1 arranged one above the other. Multiple pairs of flexible spacers 1 are spliced ​​together, and their mating surfaces are fitted together to form a U-shaped frame structure. The U-shaped frame structure is embedded in the three sides of the glass 2, and a suspended membrane 3 is sandwiched between each pair of flexible spacers 1.

[0035] Each pair of flexible spacers 1 is fitted onto the edge of the glass 2 on the side facing away from the suspended membrane 3. Specifically, each flexible spacer 1 has a groove 1-1 on the side facing away from the suspended membrane 3, and the edge of the glass 2 is fitted into the groove 1-1. Since the multiple pairs of flexible spacers 1 form a U-shaped frame structure, the glass 2 can be directly pushed into the groove 1-1 from the open side of the U-shaped frame structure (i.e., the fourth side of the glass 2) during installation, achieving glue-free pre-fixation of the glass substrate, followed by secondary sealing with silicone structural adhesive. On the open side of the U-shaped frame structure formed by the multiple pairs of flexible spacers 1, there is a bottom flexible spacer 4 arranged in pairs, one above the other, with each bottom flexible spacer 4 sandwiched between the glass 2 and the suspended membrane 3.

[0036] Each pair of flexible spacers 1 and each pair of bottom flexible spacers 4 (i.e., the sides in contact with the suspended membrane 3) has an interlocking structure 6. The interlocking structures 6 of each pair of flexible spacers 1 are interlocked with each other, and the interlocking structures 6 of each pair of bottom flexible spacers 4 are also interlocked with each other. The edge of the suspended membrane 3 is clamped between the corresponding interlocking structures 6 on both sides. By clamping the suspended membrane 3 in the middle through the interlocking structures 6 between the flexible spacers 1 and between the bottom flexible spacers 4, it can be ensured that the suspended membrane 3 remains stable when subjected to external forces and is not prone to displacement or deformation. At the same time, the glass 2 is clamped in the slot 1-1 by the U-shaped frame structure composed of multiple pairs of flexible spacers 1. Finally, the four sides of the whole are fixed by a metal frame (four-sided frame) on the outside of the U-shaped frame composed of multiple pairs of flexible spacers 1 to form a stable whole, which can then be placed in the window frame.

[0037] In this embodiment, the bottom flexible spacer 4 is provided with a plurality of hollow cavities that are connected to the cavity between the glass 2 and the suspension membrane 3 and to the outside. Molecular sieve desiccant 5 is provided in the hollow cavities of the bottom flexible spacer 4.

[0038] The thickness of the side flexible spacer 1 and the bottom flexible spacer 4 is 2 to 10 mm, and the width is 2 to 10 mm.

[0039] In this embodiment, the side flexible spacer 1 and the bottom flexible spacer 4 need to be made of flexible composite polymer materials, such as TPS (thermoplastic polyurethane) or... Super spacers. These materials have the advantage of significantly reducing thermal conductivity and reducing component weight while maintaining structural strength. In this embodiment, both the edge flexible spacer 1 and the bottom flexible spacer 4 are 6mm thick TPS thermoplastic elastomers (thermal conductivity 0.25W / m·K) with a width of 6mm.

[0040] The width of the card slot 1-1 is 2 to 10 mm, and the thickness of the card slot 1-1 matches the thickness of the glass 2. In this embodiment, the width of the card slot is 6 mm.

[0041] In this embodiment, the suspension membrane 3 is a PET film with a surface magnetron sputtering low-emissivity film layer (infrared reflectivity ≥75%, visible light transmittance 75%) with a thickness of 75μm. The glass 2 is a 5mm thick ordinary float soda-lime silica glass, and the two pieces of glass 2 form a "two-glass, two-cavity" insulated glass component.

[0042] like Figure 5 and Figure 6As shown, both the side flexible spacer 1 and the bottom flexible spacer 4 are hollow structures with multiple independent chambers. The side flexible spacer 1 has multiple first hollow chambers 1-2, which reduce the weight of the component while ensuring its stability; the bottom flexible spacer 4 has multiple second hollow chambers 4-2 that are connected to the outside and to the glass suspension membrane, and the molecular sieve desiccant 5 is placed in the second hollow chambers 4-2.

[0043] Specifically, both the first hollow chamber 1-2 and the second hollow chamber 4-2 are cuboid structures. Multiple ventilation channels 4-1 are provided on the bottom flexible spacer 4, penetrating its entire body. One end of each ventilation channel 4-1 connects to the cavity between the glass 2 and the suspended membrane 3, while the other end connects to the outside. The ventilation channels 4-1 are located on two side walls of the second hollow chamber 4-2 perpendicular to the suspended membrane 3. The design of the ventilation channels 4-1 allows the cavity space between the glass 2 and the suspended membrane 3 to form a controllable air pressure balance system with the external environment, effectively balancing the internal and external air pressure differences and avoiding deformation of the suspended membrane 3 caused by pressure variations.

[0044] In this embodiment, the molecular sieve desiccant 5 has a particle size of 0.5 to 3 mm, and the pore size of the air permeable channel 4-1 ranges from 0.5 to 5 mm. The molecular sieve desiccant 5 includes, but is not limited to, 3A, 4A, 5A, 13X, ZSM-5, etc., and is encapsulated by a moisture-permeable barrier membrane (ePTFE membrane) with a moisture permeability ≥ 5000 g / m³. 2 • 24h, air permeability ≤ 0.1mL / min·cm 2 In this embodiment, the molecular sieve desiccant 5 is a type 3A molecular sieve (packing density 0.65 g / cm³). 3 ).

[0045] The lengths of the first hollow chamber 1-2 and the second hollow chamber 4-2 are 5 to 50 cm, and in this embodiment, they are 20 cm.

[0046] The pore diameter of the ventilation channel 4-1 is 0.5 to 5 mm, and the pore spacing is 2 to 20 cm. In this embodiment, the pore diameter of the ventilation channel 4-1 is 3 mm.

[0047] like Figure 7 and Figure 8As shown, in this embodiment, the interlocking structure 6 is a bidirectional self-locking snap-fit ​​array structure. The interlocking structure 6 includes a truncated cone 6-1 and a conical groove 6-2. The truncated cones 6-1 and conical grooves 6-2 are arranged alternately and evenly spaced. The truncated cones 6-1 and conical grooves 6-2 on the facing surfaces of the two side flexible spacers 1 are interlocked with each other, and the truncated cones 6-1 and conical grooves 6-2 on the facing surfaces of the two bottom flexible spacers 4 are interlocked with each other. The edge of the suspended membrane 3 is clamped between the interlocking truncated cones 6-1 and conical grooves 6-2. Through the synergistic effect of the mechanical interlocking and elastic deformation of the truncated cones 6-1 and conical grooves 6-2, it can be ensured that the suspended membrane 3 remains stable when subjected to external forces and is not prone to displacement or deformation.

[0048] The frustum 6-1 has a top diameter of a, a bottom diameter of b, and a height of h. The axially extending sidewall inclination angle c is 15°-30°. The conical groove 6-2 has a structure and shape that matches the frustum 6-1. a, b, and h are 1 to 7 mm, 2 to 10 mm, and 1 to 7 mm, respectively. The arrangement distance d between the frustum 6-1 and the conical groove 6-2 is 2 to 20 mm. In this embodiment, a, b, and h are 1.93 mm, 3 mm, and 2 mm, respectively, the sidewall inclination angle c is 25°, and the arrangement distance d between the frustum 6-1 and the conical groove 6-2 is 3 mm.

[0049] After testing, the maximum deformation of the suspended membrane 3 was 0.07 mm / m in a cyclic test from -30℃ to 70℃. 2 The K value is stable at 1.1 W / (m 2 ·K).

[0050] The usage process of this utility model is as follows:

[0051] First, the upper and lower edges of the three sides of the suspended membrane 3 are clamped by the interlocking structure 6 of the paired flexible spacers 1, and the remaining side is clamped by the interlocking structure 6 of the paired flexible spacers 4. After the four sides of the suspended membrane 3 are clamped, the glass 2 is pushed into the slot 1-1 of the flexible spacers 1. The U-shaped frame structure composed of multiple pairs of flexible spacers 1 achieves glue-free pre-fixation of the glass 2. Finally, the four sides of the whole are fixed by the metal frame.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A suspended membrane type insulated energy-saving glass based on flexible spacer bar and air pressure balance, characterized in that: It includes a pair of flexible spacer strips (1) arranged one above the other, and multiple pairs of the flexible spacer strips (1) are enclosed to form a U-shaped frame structure. A suspension membrane (3) is sandwiched between each pair of the flexible spacer strips (1), and the side of each pair of the flexible spacer strips (1) facing away from the suspension membrane (3) is embedded in the edge of the glass (2). A bottom flexible spacer (4) is provided on one side of the U-shaped frame structure composed of multiple pairs of side flexible spacers (1), and each bottom flexible spacer (4) is respectively sandwiched between the glass (2) and the suspension membrane (3); Each pair of side flexible spacers (1) and each pair of bottom flexible spacers (4) are provided with an interlocking structure (6) on their opposite sides, and the edge of the suspension membrane (3) is clamped between the corresponding interlocking structures (6) on both sides. The bottom flexible spacer (4) has a hollow inner cavity that communicates with the cavity between the glass (2) and the suspension membrane (3) and with the outside. Molecular sieve desiccant (5) is placed inside the hollow inner cavity of the bottom flexible spacer (4).

2. The suspended membrane type hollow energy saving glass based on flexible spacer strip and air pressure balance according to claim 1, characterized in that: Each of the flexible spacers (1) has a slot (1-1) on the side facing away from the suspension membrane (3), and the edge of the glass (2) is fitted into the slot (1-1).

3. The suspended membrane insulated glass based on flexible spacer bar and air pressure balance according to claim 1, characterized in that: Both the side flexible spacer (1) and the bottom flexible spacer (4) are hollow structures with multiple independent chambers; The flexible spacer strip (1) is provided with a plurality of first hollow chambers (1-2); The bottom flexible spacer (4) is provided with a plurality of second hollow chambers (4-2), and the molecular sieve desiccant (5) is disposed in the second hollow chambers (4-2).

4. The suspended membrane insulated glass based on flexible spacer bar and air pressure balance according to claim 3, characterized in that: Both the first hollow chamber (1-2) and the second hollow chamber (4-2) are rectangular parallelepiped structures; The bottom flexible spacer (4) has multiple ventilation channels (4-1) that penetrate its body. One end of the ventilation channel (4-1) is connected to the cavity between the glass (2) and the suspension membrane (3), and the other end of the ventilation channel (4-1) is connected to the outside. The ventilation channel (4-1) is located on two side walls of the second hollow chamber (4-2) perpendicular to the suspension membrane (3).

5. The suspended membrane insulated glass based on flexible spacer bar and air pressure balance according to claim 1, characterized in that: The interlocking structure (6) includes a truncated cone (6-1) and a conical groove (6-2). The truncated cone (6-1) and the conical groove (6-2) are arranged alternately and evenly spaced. The truncated cone (6-1) and the conical groove (6-2) on the two mating interlocking structures (6) are interlocked with each other, and the edge of the suspension membrane (3) is clamped between the interlocked truncated cone (6-1) and the conical groove (6-2).

6. The suspended membrane insulated glass based on flexible spacer bar and air pressure balance according to claim 5, characterized in that: The axially extending sidewall inclination angle of the truncated cone (6-1) is 15°-30°, and the sidewall inclination angle of the conical groove (6-2) matches the sidewall inclination angle of the truncated cone (6-1).

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