Broken bridge aluminum alloy door and window structure
By adopting a double-edge design and a three-dimensional thermal insulation network in thermally broken aluminum alloy doors and windows, the stress concentration problem at the glass connection point under the single-edge design is solved, thereby improving the safety and thermal insulation performance of heavy-duty glass in high-rise residential buildings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-03-27
AI Technical Summary
In existing thermally broken aluminum alloy doors and windows, the single-edge design causes stress concentration at the joint when facing heavy glass, making it prone to bending and deformation. This leads to loose glass, reduced sealing performance, and poor thermal insulation, posing safety hazards.
The design employs a double-edge design for the central column profile and the outer frame profile, combined with a three-dimensional thermal insulation network consisting of a three-chamber, a double-chamber, and thermal insulation strips, to enhance connection strength and thermal insulation performance. The symmetrical force distribution layout disperses the weight of the glass and impact loads, and a highly elastic sealing strip forms multiple layers of protection.
It effectively avoids the safety hazards of loose and broken glass, significantly improves thermal insulation performance and airtightness, and enhances the safety and comfort of doors and windows, making it particularly suitable for high-rise residential buildings and heavy glass applications.
Smart Images
Figure CN121738451A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of thermally broken aluminum alloy technology, and in particular to a thermally broken aluminum alloy door and window structure. Background Technology
[0002] Thermally broken aluminum profiles, also known as insulated aluminum alloy profiles, thermally broken aluminum alloy profiles, thermally broken profiles, and thermally broken aluminum-plastic composite profiles, offer superior performance compared to ordinary aluminum alloy profiles. Specifically, because aluminum alloy is a metal with relatively high thermal conductivity, it can act as a "bridge" for heat transfer when there is a significant temperature difference between indoors and outdoors. Windows and doors made from this material suffer from poor thermal insulation. Thermally broken aluminum profiles, however, break the aluminum alloy in the middle and connect the broken sections with a rigid plastic material. Since plastic conducts heat much less effectively than metal, heat is less likely to pass through the entire material, thus improving its thermal insulation performance.
[0003] In existing technologies, the connection between the central support (horizontal support profile) and the outer frame in door and window structures is a crucial link in fixing the glass, and its design rationality directly affects the stability and safety of glass installation. Currently, some central support profiles and outer frame profiles in the industry still adopt a single-edge design, that is, only a raised edge is set on one side of the profile for limiting and fixing the glass. This design can barely meet the requirements when dealing with ordinary thin glass (such as 5mm single pane glass, weighing about 12.5kg / ㎡), but in the context of modern doors and windows generally using heavy glass (such as double-glazed tempered glass, thickness 12mm+12A+12mm, weighing more than 35kg / ㎡; or laminated safety glass, which is even heavier), the drawbacks are becoming increasingly apparent. The core problem of the single-edge design is the unreasonable stress structure: the weight of the glass and external impact forces (such as strong winds and collisions) will be concentrated on the connection point between the single edge and the outer frame. Because a single edge only bears force on one side, the stress at the connection point increases dramatically. When the glass is subjected to lateral thrust (such as a typhoon or accidental impact), the edge will bend like a cantilever beam. Long-term stress can easily lead to plastic deformation of the aluminum alloy profile at the connection point (bending angle can reach 3°-5°), and may even cause cracks in the weld between the edge and the outer frame. This deformation will directly damage the tight fit between the glass and the edge, causing the sealing strip to loosen and gaps to appear. On the one hand, the glass loses its effective restraint and may wobble inside the frame, increasing the risk of spontaneous breakage. On the other hand, the gaps will become new channels for heat, rainwater, and noise, greatly reducing the thermal insulation and sealing performance of the thermally broken aluminum frame. More seriously, for large-sized doors and windows (such as floor-to-ceiling windows and balcony doors) in high-rise residential buildings (above 10 floors), the impact resistance defects of a single edge may pose safety hazards. The alternating loads generated by strong winds at high altitudes will repeatedly impact the glass and the edge. If the edge bends and cannot be restored, the glass may experience edge stress concentration due to long-term uneven stress, eventually leading to breakage. Therefore, we propose a thermally broken aluminum alloy door and window structure to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a thermally broken aluminum alloy door and window structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A thermally broken aluminum alloy door and window structure includes a central column profile and an outer frame profile. A central column double-edge profile is fixedly connected to the outer wall of the central column profile, and an outer frame double-edge profile is fixedly connected to the outer wall of the outer frame profile. Two first sealing strip mounting grooves are provided on the outer wall of the central column double-edge profile, and a second sealing strip mounting groove is provided on the outer wall of the outer frame double-edge profile. An inner frame profile is provided at one end of the outer wall of both the central column profile and the outer frame profile. Four positioning bosses are fixedly connected to one end of each of the central column profile, the outer frame profile, and the inner frame profile. Thermal insulation components are provided on the outer wall of each positioning boss.
[0007] Preferably, the heat insulation component includes two heat insulation strips, and the four positioning bosses are respectively engaged with the two heat insulation strips in pairs, and the outer wall of the heat insulation strip has two hollow cavities.
[0008] Preferably, the outer wall of the central column double-sided profile has three chambers, and the outer wall of the outer frame double-sided profile has two chambers. The three chambers can specifically reduce heat conduction in the central column area (glass splice); the two chambers can ensure the lightweight of the outer frame while blocking heat exchange between the frame and the outside.
[0009] Preferably, both the central column profile and the outer frame profile have internal heat-insulating cavities.
[0010] Preferably, the outer wall of the inner frame profile is provided with two flanges. The two flanges can also enhance the fixing strength with the surrounding structure and improve the wind pressure resistance of the overall frame.
[0011] Preferably, the inner wall of the inner frame profile is provided with a cavity. The static air layer inside the cavity is a natural heat insulation medium, which can effectively block the heat conduction on both sides of the inner frame profile. When the outdoor high temperature is transferred to the inner frame through the outer frame profile, the cavity will act as a "buffer zone" to weaken the continuous heat transfer, forming a "primary + secondary" gradient heat insulation with the heat insulation cavity inside the central column profile and the outer frame profile.
[0012] Preferably, the four heat insulation strips are arranged symmetrically in pairs.
[0013] Compared with the prior art, the advantages of the present invention are as follows:
[0014] This solution uses a symmetrical force-bearing layout with double-edge design to distribute the weight and impact load of the glass to the two side profiles, increasing the connection strength several times compared to single-edge design. It effectively avoids deformation of the outer frame due to stress concentration and solves the safety hazards of traditional single-edge design, such as easy bending, easy loosening, or even breakage of the glass.
[0015] The three-chamber structure of the central column double-sided profile and the double-chamber structure of the outer frame double-sided profile form a differentiated gradient insulation. Combined with the hollow chamber of the insulation strip, the cavity of the inner frame profile and the insulation cavity to construct a three-dimensional insulation network, the efficiency of heat exchange between indoor and outdoor areas is greatly reduced, and the thermal insulation performance is significantly improved.
[0016] The staggered sealing layout of the central column edge profile and the outer frame edge profile, combined with the sealing strip with a high elasticity recovery rate, forms multiple layers of protection, effectively blocking rainwater and dust intrusion and blocking air convection, thus improving the airtightness and watertightness of doors and windows.
[0017] Meanwhile, the flange design of the inner frame profile enhances the overall frame's wind pressure resistance, and the synergistic effect of each component comprehensively optimizes the safety, energy efficiency, and comfort of the doors and windows, making them especially suitable for high-rise residential buildings and scenarios with high requirements for heavy-duty glass, heat insulation, and sound insulation. Attached Figure Description
[0018] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the central column profile and the inner frame profile of a thermally broken aluminum alloy door and window structure proposed in this invention.
[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer frame profile and the inner frame profile of a thermally broken aluminum alloy door and window structure proposed in this invention.
[0021] In the diagram: 1. Central column profile; 2. Outer frame profile; 3. Central column double-sided profile; 4. Outer frame double-sided profile; 5. First sealing strip mounting groove; 6. Second sealing strip mounting groove; 7. Thermal insulation cavity; 8. Positioning boss; 9. Thermal insulation strip; 10. Inner frame profile; 11. Cavity. Detailed Implementation
[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0024] Depend on Figure 1 and Figure 2 As shown, a thermally broken aluminum alloy door and window structure is disclosed, including a central column profile 1 and an outer frame profile 2. The outer wall of the central column profile 1 is fixedly connected to a central column double-edge profile 3, and the outer wall of the outer frame profile 2 is fixedly connected to an outer frame double-edge profile 4. The central column profile 1 and the outer frame profile 2 serve as the main frame structure. The glass is bidirectionally fixed by the central column double-edge profile 3 and the outer frame double-edge profile 4 fixed to the outer wall, respectively. The double-edge design, through a symmetrical force-bearing structure, disperses the gravity and impact load of the glass to the two side profiles, and the connection strength is increased by several times compared to the single-edge design. Even when facing thicker laminated glass, it can effectively prevent deformation of the outer frame due to stress concentration.
[0025] The outer wall of the central column double-edge profile 3 has three chambers, and the outer wall of the outer frame double-edge profile 4 has two chambers. The three chambers form a "gradient heat insulation" through more independent air layers, which can specifically reduce the heat conduction in the central column area (glass splicing area); the two chambers ensure the lightweight of the outer frame while blocking the heat exchange between the frame and the outside.
[0026] The outer wall of the central column double-edge profile 3 has two first sealing strip installation grooves 5, and the outer wall of the outer frame double-edge profile 4 has a second sealing strip installation groove 6. The two first sealing strip installation grooves 5 on the outer wall of the central column double-edge profile 3 and the second sealing strip installation groove 6 on the outer frame double-edge profile 4 form a "staggered sealing" layout. When the glass is installed in place, the sealing strip (mostly made of EPDM material with an elastic recovery rate of over 90%) embedded in the groove will fit tightly against the edge of the glass. The first sealing strip mainly blocks the intrusion of liquid and solid impurities such as rainwater and dust, while the second sealing strip blocks air convection through compression deformation, so that the air tightness of the door and window reaches a high level.
[0027] Both the central column profile 1 and the outer frame profile 2 have internal heat insulation cavities 7, which serve as a "primary barrier" for heat conduction. The inner frame profile 10, which is connected to the outer wall of both, has a cavity 11 on its inner wall that forms a "secondary barrier". The cavity 11 reduces the direct convection of hot and cold air through the buffering effect of the air column, and also achieves sound insulation effect through the attenuation of sound waves in the air layer.
[0028] One end of the outer wall of the central column profile 1 and the outer frame profile 2 is provided with an inner frame profile 10. One end of the central column profile 1, the outer frame profile 2 and the inner frame profile 10 are all fixedly connected with four positioning bosses 8. The outer wall of the inner frame profile 10 is provided with two flanges, and the inner wall of the inner frame profile 10 is provided with a cavity 11.
[0029] The inner frame profile 10 is not only the connecting hub between the middle column profile 1 and the outer frame profile 2, but the two flanges on its outer wall can also enhance the fixing strength with the surrounding structure and improve the wind pressure resistance of the overall frame.
[0030] The outer wall of the positioning boss 8 is equipped with a heat insulation component, which includes two heat insulation strips 9. The heat insulation strips 9 directly block the heat conduction between metals, preventing heat from being continuously transferred through the profile. The four positioning bosses 8 are paired up and respectively engaged with the two heat insulation strips 9. The outer wall of the heat insulation strip 9 has two hollow cavities. The four heat insulation strips 9 are arranged symmetrically in pairs. The two hollow cavities on the outer wall of each heat insulation strip 9, together with the heat insulation cavity 7 and cavity 11 of the profile itself, form a "three-dimensional heat insulation network". With the symmetrical arrangement of the four heat insulation strips in pairs, the efficiency of heat exchange between indoors and outdoors can be reduced. The heat insulation strips 9 can be made of PA66 nylon material.
[0031] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims
1. A thermally broken aluminum alloy door and window structure, comprising a central column profile (1) and an outer frame profile (2), characterized in that, The outer wall of the central column profile (1) is fixedly connected to the central column double-edge profile (3), the outer wall of the outer frame profile (2) is fixedly connected to the outer frame double-edge profile (4), the outer wall of the central column double-edge profile (3) has two first sealing strip mounting grooves (5), the outer wall of the outer frame double-edge profile (4) has a second sealing strip mounting groove (6), one end of the central column profile (1) and the outer frame profile (2) is provided with an inner frame profile (10), one end of the central column profile (1), the outer frame profile (2) and the inner frame profile (10) are fixedly connected with four positioning bosses (8), the outer wall of the positioning bosses (8) is provided with a heat insulation component.
2. The thermally broken aluminum alloy door and window structure according to claim 1, characterized in that, The heat insulation component includes two heat insulation strips (9), and four positioning bosses (8) are connected to the two heat insulation strips (9) in pairs. The outer wall of the heat insulation strip (9) has two hollow cavities.
3. The thermally broken aluminum alloy door and window structure according to claim 1, characterized in that, The outer wall of the central column double-sided profile (3) is provided with three chambers, and the outer wall of the outer frame double-sided profile (4) is provided with two chambers.
4. The thermally broken aluminum alloy door and window structure according to claim 1, characterized in that, Both the central column profile (1) and the outer frame profile (2) are provided with heat insulation cavities (7).
5. The thermally broken aluminum alloy door and window structure according to claim 1, characterized in that, The outer wall of the inner frame profile (10) is provided with two flanges.
6. The thermally broken aluminum alloy door and window structure according to claim 1, characterized in that, The inner wall of the inner frame profile (10) is provided with a cavity (11).
7. The thermally broken aluminum alloy door and window structure according to claim 2, characterized in that, The four heat insulation strips (9) are arranged symmetrically in pairs.