An assembled heat-insulating curtain wall window system with in-wall hidden sash

Abstract

The application discloses an assembled heat-insulation curtain wall window system with in-band casement hidden fan, which comprises a plurality of window sashes, the window sashes are spliced to form a rectangular window structure, side vertical window frames are arranged on both sides of the window structure, side horizontal window frames are arranged on the top and bottom of the window structure, and the side horizontal window frames are used for being connected and fixed with a main body structure of a curtain wall, wherein: a heat-insulation strip is arranged in a gap between two adjacent window sashes, and the gap is shielded by a pressing plate; the side vertical window frame is provided with a heat-insulation strip, and a gap between the side vertical window frame and an adjacent window sash is shielded by a pressing plate; the side horizontal window frame is provided with a heat-insulation strip, and a gap between the side horizontal window frame and an adjacent window sash is shielded by a pressing plate; and the window sash is an opening sash and a fixed sash. The profile has high uniformity, is easy to process and implement, is convenient to install and disassemble, has stable structure, good heat-insulation effect, good adjustability, less material consumption and good visual effect.

Description

Technical Field

[0001] This invention relates to a prefabricated insulated curtain wall window system with an inwardly opening concealed sash, belonging to the field of prefabricated curtain wall windows. Background Technology

[0002] Currently, existing inward-opening insulated curtain wall windows all use exposed frames with snap-fit ​​strips for the operable sashes. Viewed from the inside, the operable sashes protrude from the frame, and are clearly not on the same vertical plane as the fixed sashes in other locations. Furthermore, the profiles where the operable sashes are located are generally wider, around 120mm. It is evident that the structural difference between the operable and fixed sashes is significant from both the inside and outside. Besides the poor overall appearance, on-site installation requires piecemeal assembly, which is cumbersome, difficult to control in terms of quality, and incurs high labor costs. Additionally, if the window height is large, the mullion profile on the curtain wall window needs to be reinforced. However, the reinforced profile protrudes significantly from the frame, resulting in poor appearance and potential safety hazards. If the curtain wall window is designed as a large row of windows or vertical strip windows, the existing exposed frame with snap-fit ​​strips makes it difficult to separate the windows. If the design adopts the approach of "dividing large windows and vertical strip windows into smaller windows," considering installation and fabrication issues, double mullions or double horizontal mullions need to be added between the windows. This results in wider profiles at the joints, increased profile consumption, and poor external appearance. In short, the curtain wall window profiles installed using the existing exposed frame and tie-down strip method cannot be standardized, have poor adjustability, and lead to uneven window structures, posing safety hazards and poor external appearance, which needs to be improved. Summary of the Invention

[0003] The purpose of this invention is to provide a prefabricated thermal insulation curtain wall window system with an inwardly opening concealed sash. This system features strong profile uniformity, easy processing and implementation, convenient installation and disassembly, stable structure, good thermal insulation effect, good adjustability, low material consumption, and excellent external appearance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A prefabricated insulated curtain wall window system with an inwardly opening concealed sash includes multiple window sashes, which are spliced ​​together to form a rectangular window structure. Vertical side window frames are installed on both sides of the window structure, and horizontal side window frames are installed at the top and bottom. The horizontal side window frames are used to connect and fix to the main structure of the curtain wall. Specifically: a thermal insulation strip is provided in the gap between two adjacent window sashes, and the gap is covered by a pressure plate; a thermal insulation strip is provided on the vertical side window frame, and the gap between the vertical side window frame and its adjacent window sash is covered by a pressure plate; a thermal insulation strip is provided on the horizontal side window frame, and the gap between the horizontal side window frame and its adjacent window sash is covered by a pressure plate; the window sashes include both operable and fixed sashes.

[0006] The advantages of this invention are:

[0007] The mullions and cross mullions formed by two adjacent profiles of the present invention have the same width, are easy to process and implement, have high versatility, wide applicability, can be mass-produced, have controllable quality, are easy to install and disassemble, have a stable structure, good heat insulation effect, strong adjustability, low material consumption, and good appearance. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of an embodiment of the prefabricated thermal insulation curtain wall window system with an inwardly opening concealed sash of the present invention.

[0009] Figure 2 yes Figure 1 A schematic diagram of the AA-direction section.

[0010] Figure 3 yes Figure 1 BB-directed sectional view.

[0011] Figure 4 yes Figure 1 CC-direction cross-sectional view.

[0012] Figure 5 yes Figure 1 DD-direction sectional view.

[0013] Figure 6 yes Figure 1 EE-directed sectional view.

[0014] Figure 7 yes Figure 1 A schematic diagram of the FF section.

[0015] Figure 8 yes Figure 1 Schematic diagram of GG section.

[0016] Figure 9 yes Figure 2 An enlarged schematic diagram of part A in the middle.

[0017] Figure 10 yes Figure 3 Enlarged schematic diagram of part B.

[0018] Figure 11 yes Figure 2 An enlarged schematic diagram of section C.

[0019] Figure 12 yes Figure 2 An enlarged schematic diagram of part D in the middle.

[0020] Figure 13 yes Figure 3 An enlarged schematic diagram of section E in the middle.

[0021] Figure 14 yes Figure 3Enlarged schematic diagram of section F in the middle.

[0022] Figure 15 yes Figure 2 An enlarged schematic diagram of section G in the middle.

[0023] Figure 16 yes Figure 5 An enlarged schematic diagram of section H in the middle.

[0024] Figure 17 yes Figure 5 Enlarged schematic diagram of section I.

[0025] Figure 18 yes Figure 5 An enlarged schematic diagram of section J in the middle.

[0026] Figure 19 yes Figure 6 An enlarged diagram of section K in the middle.

[0027] Figure 20 yes Figure 7 An enlarged schematic diagram of section L in the middle.

[0028] Figure 21 yes Figure 7 An enlarged schematic diagram of section M.

[0029] Figure 22 This is a schematic diagram showing the arrangement of the hardware components on the operable fan. Detailed Implementation

[0030] like Figures 1 to 22 As shown, this invention discloses a prefabricated insulated curtain wall window system with an inwardly opening concealed sash, comprising multiple window sashes spliced ​​together to form a rectangular window structure 30. Vertical window frames 102 are installed on both sides of the window structure 30, and horizontal window frames 109 are installed on the top and bottom of the window structure 30. The horizontal window frames 109 are used to connect and fix to the main structure of the curtain wall. Specifically: thermal insulation strips 901 are provided in the gaps between adjacent window sashes (i.e., between two horizontally adjacent window sashes and between two vertically adjacent window sashes), and the gaps are covered by pressure plates 101; thermal insulation strips 901 are provided on the vertical window frames 102, and the gaps between the vertical window frames 102 and their adjacent window sashes are covered by pressure plates 101; thermal insulation strips 901 are provided on the horizontal window frames 109, and the gaps between the horizontal window frames 109 and their adjacent window sashes are covered by pressure plates 101; the window sashes are operable sashes 10 and fixed sashes 20.

[0031] like Figures 1 to 21The fixed fan 20 includes a fixed fan frame consisting of a fixed fan vertical frame and a fixed fan horizontal frame. The fixed fan vertical frame and the fixed fan horizontal frame are connected by fixing screws 602. A secondary vertical frame 1050 is connected to the outdoor side of the fixed fan vertical frame by locking screws 603. A secondary horizontal frame 2050 is connected to the outdoor side of the fixed fan horizontal frame by locking screws 603. A fixed fan glass panel 302 is installed on the frame formed by the secondary vertical frame 1050 and the secondary horizontal frame 2050. The fixed fan glass panel 302 is supported by a support strip 801, which is fixed to the fixed fan frame. Sealing strips 502 are embedded on the secondary vertical frame 1050 and the secondary horizontal frame 2050. The sealing strips 502 are used to contact the fixed fan glass panel 302.

[0032] In practical design, for two horizontally adjacent fixed fans 20, one of the vertical frames of the two adjacent fixed fans is the main fixed fan vertical frame 105 and the other is the secondary fixed fan vertical frame 104 (e.g. Figure 12 And the main fixed fan vertical frame 105 and the secondary fixed fan vertical frame 104 are hooked together and fixed by locking screws 603, or two adjacent fixed fan vertical frames are replaced by a single fixed fan vertical frame 107 (e.g. Figure 13 ).

[0033] In practical design, for two adjacent fixed fans 20, one of the horizontal frames of the two adjacent fixed fans is the main fixed fan horizontal frame 203 and the other is the secondary fixed fan horizontal frame 204 (e.g. Figure 19 And the main fixed fan horizontal frame 203 and the secondary fixed fan horizontal frame 204 are hooked together and fixed by locking screws 603, or two adjacent fixed fan horizontal frames are replaced by a fixed fan middle horizontal frame 110 (e.g. Figure 18 ).

[0034] In actual design, the edge vertical window frame 102 is used for the main load-bearing, and the fixed sash vertical frame of the fixed sash 20 adjacent to the edge vertical window frame 102 is the secondary fixed sash vertical frame 104 (e.g., Figure 10 After the secondary fixed sash vertical frame 104 is hooked to the edge vertical window frame 102, it is fixed by locking screws 603.

[0035] In actual design, the edge horizontal window frame 109 is used for the main load-bearing function, and the fixed sash horizontal frame of the fixed sash 20 adjacent to the edge horizontal window frame 109 is the secondary fixed sash horizontal frame 204 (e.g., Figure 21 The secondary fixed sash frame 204 is hooked to the side horizontal window frame 109 and then fixed by locking screws 603.

[0036] like Figures 1 to 21The operable sash 10 includes an operable sash frame consisting of an operable sash vertical frame 201 and an operable sash horizontal frame 202. An operable sash glass panel 301 is installed on the operable sash frame. A concealed hinge 401 connects the operable sash frame to the adjacent side vertical window frame 102 or the fixed sash vertical frame. A two-link wind brace 404 connects the operable sash frame to the adjacent side horizontal window frame 109 or the fixed sash horizontal frame. A handle 402 and multiple locking points 403 are installed on the operable sash frame.

[0037] In this invention, the concealed hinge 401, handle 402, locking point 403, and double-link wind brace 404 are common opening fan hardware components. Their installation positions and installation methods are well-known technologies and will not be described in detail here.

[0038] In this invention, the opening sash 10 is an inward-opening concealed sash design. Whether viewed from the indoor side or the outdoor side, the indoor and outdoor sides of the prefabricated thermal insulation curtain wall window system of this invention present a flat surface, avoiding concave and convex shapes, ensuring high safety in use, and providing better sealing and external appearance compared with traditional exposed hinge opening sashes.

[0039] In practical design, the operable fan 10 can be installed individually or in pairs. When the two operable fans 10 are installed in pairs, such as... Figure 15 A split-opening sash adapter 108 is provided between the two openable sashes 10. The two ends of the split-opening sash adapter 108 are fixed to the corresponding profiles (such as fixed sash frames). A heat insulation strip 901 is embedded on the outdoor side of the split-opening sash adapter 108. The heat insulation strip 901 is connected to a pressure plate 101 via a connecting profile 103. The pressure plate 101 is fixed to the connecting profile 103 by fastening screws 601. A sealing strip 502 is embedded on the pressure plate 101. The sealing strip 502 is used to contact the glass panel 301 of the openable sash. The part of the fastening screw 601 on the outdoor side of the pressure plate 101 is covered by a buckle strip 112. The heat insulation strip 901 has protruding slots 9011 on both sides. A duckbill-shaped sealing strip 501 is embedded in the slots 9011. The duckbill-shaped sealing strip 501 is used to contact the openable sash frame. In addition, a sealing strip 502 is also embedded on the opening fan frame for contacting the indoor side of the double-opening fan adapter profile 108.

[0040] In this invention, the outer sides of the side vertical window frame 102, the side horizontal window frame 109, the main fixed sash vertical frame 105, the main fixed sash horizontal frame 203, the fixed sash middle vertical frame 107, and the fixed sash middle horizontal frame 110 are all provided with mounting parts 111. The inner side of the thermal insulation strip 901 is embedded in the mounting part 111. The outer side of the thermal insulation strip 901 is connected to the pressure plate 101 via the connecting profile 103. The pressure plate 101 is fixed to the connecting profile 103 by fastening screws 601. A sealing strip 502 is embedded in the pressure plate 101. The portion of the fastening screw 601 located on the outer side of the pressure plate 101 is covered by a buckle strip 112.

[0041] In actual design, the pressing plate 101 is usually in a "ji" shape, and the groove formed on the pressing plate 101 is used for passing through the fastening screw 601 and installing the buckle strip 112.

[0042] For example Figures 1 to 21 For the connecting profile 103 connected to the edge vertical window frame 102 and the edge horizontal window frame 109, the connecting profile 103 is connected with a closing metal plate 400 (such as made of aluminum alloy) through a locking screw 603, and the outdoor side of the closing metal plate 400 is pressed by the pressing plate 101.

[0043] For example Figures 1 to 21 One side of the heat insulation strip 901 adjacent to the opening sash frame protrudes with a clamping groove 9011 (such as Figure 14 ), a tongue-shaped sealing strip 501 is clamped on the clamping groove 9011, and the tongue-shaped sealing strip 501 is used to contact the opening sash frame. For example Figure 10 In the figure, the heat insulation strip 901 shown shows a situation where the clamping groove 9011 is designed but the tongue-shaped sealing strip 501 is not installed.

[0044] In the present invention, the pressing plate 101 is used to press the components on both sides thereof, and the components can be the closing metal plate 400, the opening sash glass panel 301, and the fixed sash glass panel 302, depending on the installation position of the pressing plate 101.

[0045] For example Figures 1 to 21 On the edge horizontal window frame 109, there is a sliding groove 1090, and a T-shaped connecting piece 702 is slidably and adjustably installed in the sliding groove 1090. The T-shaped connecting piece 702 is fixed with an L-shaped steel connecting piece 701 through a locking bolt 604, and the L-shaped steel connecting piece 701 is used to be fixed with the embedded part on the main body structure of the curtain wall. Among them, the L-shaped steel connecting piece 701 and the embedded part on the main body structure can achieve adjustment in the depth direction, the up and down direction can be adjusted by means of the vertical long holes designed on the T-shaped connecting piece 702, and the left and right direction can be adjusted by means of the sliding groove 1090. In short, based on the above design, the assembled heat insulation curtain wall window system of the present invention realizes three-dimensional adjustment, effectively reduces the structural and installation errors, and is simple and easy to operate.

[0046] In the present invention, all the profiles in the entire assembled heat insulation curtain wall window system are made of aluminum alloy. Among them, the edge vertical window frame 102, the edge horizontal window frame 109, the main fixed sash vertical frame 105, the main fixed sash horizontal frame 203, the fixed sash middle vertical frame 107, and the fixed sash middle horizontal frame 110 are used for main stress, while the secondary fixed sash vertical frame 104 and the secondary fixed sash horizontal frame 204 are used for secondary stress. In actual design, except for the edge vertical window frame 102 and the edge horizontal window frame 109, the positions of the profiles for main stress and secondary stress should be reasonably designed according to the positions of the opening sash and the fixed sash.

[0047] For example Figures 2 to 4 The structure of part A' is the same as that of part A, and they are symmetrical. Similarly, the structure of part B' is the same as that of part B, and they are symmetrical.

[0048] In this invention, the position design of the opening fan 10 and the fixed fan 20, as well as their combination design, can be varied. They can be designed as a single large fixed fan, or the large fixed fan can be split into two or more smaller fixed fans on the left and right or top and bottom. This can be flexibly designed according to design needs. Similarly, they can be designed as a single opening fan or two opening fans in a split-opening manner. This can also be flexibly designed according to design needs. Figure 1 The example shown is only one embodiment of a curtain wall window system and is not intended to be limiting.

[0049] This invention defines the left-right, up-down, and depth directions, such as... Figure 16 As shown, the depth direction can also be called the front-to-back direction, and the left-to-right direction is parallel to the outer edge of the main structure. In this invention, the side where the operable sash glass panel 301 and the fixed sash glass panel 302 are located is the outdoor area, and the side where the operable sash frame and the fixed sash frame are located is the indoor area.

[0050] The present invention has the following beneficial effects:

[0051] 1. In this invention, the mullions and horizontal stiles formed by two adjacent profiles (such as the side vertical window frame 102 and the fixed sash vertical frame, the side horizontal window frame 109 and the opening sash horizontal frame, two adjacent fixed sash vertical frames, etc.) have the same width, such as 80mm. See [reference needed]. Figure 1 As shown in the figure. This design can greatly reduce the number of profile types, improve versatility and applicability, enable mass production, and provide higher quality control.

[0052] In this invention, the various profiles are rationally divided into primary and secondary load-bearing components, resulting in high overall structural strength and good torsional resistance of the curtain wall window system. Furthermore, the uniformly wide vertical and horizontal mullions, utilizing the principle of equal pressure chambers, meet the water tightness and air tightness requirements of the curtain wall window system.

[0053] 2. In this invention, the fixed fan frame, the opening fan frame, and the adjacent profiles are connected by screws, abandoning the traditional corner bracket frame connection method. This not only saves the processing of corner brackets, but also reduces the installation process, saves corner bracket consumables, makes frame assembly simpler and easier, improves work efficiency, and ensures structural safety and reliability.

[0054] 3. The present invention adds a sub-frame design. The thickness of each sub-vertical frame 1050 and each sub-horizontal frame 2050 is designed according to the thickness of the corresponding opening sash glass panel 301 / fixed sash glass panel 302, so as to meet the configuration requirements of glass panels with different thicknesses from 24mm to 60mm, and has strong versatility and adaptability.

[0055] 4. In this invention, the thermal break strip 901 can be designed with a large size of 34mm, providing excellent thermal insulation performance. Based on the consistent width of the vertical and horizontal stiles, the thermal break strip can be continuously connected, thereby improving the water tightness and air tightness of the entire curtain wall window system, making it particularly suitable for cold weather in northern regions. Of course, if used in southern regions where insulation is not required, a smaller size thermal break strip can be used instead.

[0056] 5. The edge-sealing metal plate 400 of the present invention can make full use of the heat insulation function of the heat insulation strip. The edge-sealing metal plate 400 and the glass panel can continuously connect the "isothermal curve" and control it on a finished surface, thus ensuring the heat insulation performance of the entire curtain wall window system.

[0057] 6. This invention is applicable to large-sized horizontal and vertical strip windows. In the design, large-sized horizontal and vertical strip windows can be freely divided into multiple smaller windows according to architectural partitioning requirements. These smaller windows are then prefabricated in the workshop and transported to the site for assembly into large-sized horizontal and vertical strip windows. This design concept effectively transforms the traditional on-site assembly of frame components into factory prefabrication and on-site assembly, significantly reducing on-site workload, lowering installation difficulty, increasing installation speed, and shortening the construction period. Simultaneously, workshop prefabrication allows for better control of processing quality and precision, ensuring project quality and standards.

[0058] More importantly, no matter how the large horizontal windows and vertical strip windows are freely divided and designed, after on-site assembly, all the horizontal and vertical stiles are always the same width, making it impossible to see the assembly position. This results in a strong sense of architectural unity, excellent external visual appeal, and is particularly suitable for projects with tight schedules and high quality requirements.

[0059] 7. This invention can also be applied to large-area framed glass curtain walls. If the curtain wall is considered as a combination of "horizontal large windows and vertical large strip windows," then each floor can be regarded as a full-floor "large window row," and further, each floor's "large window row" can be divided into several "small window rows," so that each "small window row" can be prefabricated in the factory. This idea breaks through traditional thinking, upgrading the existing framed glass curtain wall's frame members from loose assembly to factory prefabrication and on-site assembly, greatly improving on-site installation speed and accuracy, ensuring quality, and significantly improving overall quality.

[0060] The above description describes the preferred embodiments of the present invention and the technical principles applied thereto. For those skilled in the art, any obvious changes such as equivalent transformations or simple substitutions based on the technical solutions of the present invention, without departing from the spirit and scope of the present invention, shall fall within the protection scope of the present invention.

Claims

1. A prefabricated thermal insulation curtain wall window system with an inwardly opening concealed sash, characterized in that, The window includes multiple window sashes, which are spliced ​​together to form a rectangular window structure. Vertical side window frames are installed on both sides of the window structure, and horizontal side window frames are installed at the top and bottom. The horizontal side window frames are used to connect and fix to the main structure of the curtain wall. Specifically: thermal insulation strips are installed in the gaps between adjacent window sashes, and the gaps are covered by pressure plates; thermal insulation strips are installed on the vertical side window frames, and the gaps between the vertical side window frames and their adjacent window sashes are covered by pressure plates; thermal insulation strips are installed on the horizontal side window frames, and the gaps between the horizontal side window frames and their adjacent window sashes are covered by pressure plates; the window sashes include both operable and fixed sashes. The fixed fan includes a fixed fan frame consisting of a fixed fan vertical frame and a fixed fan horizontal frame. The outdoor side of the fixed fan vertical frame is connected to a secondary vertical frame by locking screws, and the outdoor side of the fixed fan horizontal frame is connected to a secondary horizontal frame by locking screws. A fixed fan glass panel is installed on the frame formed by the secondary vertical frame and the secondary horizontal frame. The fixed fan glass panel is supported by a support strip, which is fixed to the fixed fan frame. Sealing strips are embedded in the secondary vertical frame and the secondary horizontal frame. For two horizontally adjacent fixed fans, one of the vertical frames of the two adjacent fixed fans is the main fixed fan vertical frame and the other is the secondary fixed fan vertical frame. The main fixed fan vertical frame and the secondary fixed fan vertical frame are hooked together and fixed by locking screws. Alternatively, the two adjacent fixed fan vertical frames can be replaced by a single vertical frame in a fixed fan. For two adjacent fixed fans, one of the horizontal frames of the two adjacent fixed fans is the main fixed fan horizontal frame and the other is the secondary fixed fan horizontal frame. The main fixed fan horizontal frame and the secondary fixed fan horizontal frame are hooked together and fixed by locking screws. Alternatively, the horizontal frames of the two adjacent fixed fans can be replaced by a single horizontal frame in a fixed fan. The edge vertical window frame is used for primary load-bearing. The fixed sash vertical frame adjacent to the edge vertical window frame is the secondary fixed sash vertical frame. The secondary fixed sash vertical frame is hooked to the edge vertical window frame and fixed by locking screws. The side horizontal window frame is used for the main load-bearing function. The fixed sash horizontal frame adjacent to the side horizontal window frame is the secondary fixed sash horizontal frame. The secondary fixed sash horizontal frame is hooked to the side horizontal window frame and fixed by locking screws.

2. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 1, characterized in that, The opening sash includes an opening sash frame consisting of an opening sash vertical frame and an opening sash horizontal frame. An opening sash glass panel is installed on the opening sash frame. A concealed hinge connects the opening sash frame to the adjacent side vertical window frame or the fixed sash vertical frame. A two-link wind brace connects the opening sash frame to the adjacent side horizontal window frame or the fixed sash horizontal frame. A handle and multiple locking points are installed on the opening sash frame.

3. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 2, characterized in that, The operable sash can be installed individually or in pairs. When the two operable sashes are installed in pairs, a connecting profile is provided between them. A heat insulation strip is embedded on the outdoor side of the connecting profile. The heat insulation strip is connected to a pressure plate via a connecting profile. The pressure plate is fixed to the connecting profile by fastening screws. A sealing strip is embedded on the pressure plate. The portion of the fastening screw on the outdoor side of the pressure plate is covered by a fastening strip. The heat insulation strip has protruding grooves on both sides, and a duckbill-shaped sealing strip is embedded in the grooves. The duckbill-shaped sealing strip is used to contact the operable sash frame.

4. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 1, characterized in that, The exterior sides of the edge vertical window frame, the edge horizontal window frame, the main fixed sash vertical frame, the main fixed sash horizontal frame, the fixed sash middle vertical frame, and the fixed sash middle horizontal frame are all provided with mounting parts. The interior side of the thermal insulation strip is embedded in the mounting part, and the exterior side of the thermal insulation strip is connected to a pressure plate via a connecting profile. The pressure plate is fixed to the connecting profile by fastening screws, and a sealing strip is embedded in the pressure plate. The portion of the fastening screw on the exterior side of the pressure plate is covered by a fastening strip.

5. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 4, characterized in that, For the connecting profiles connected to the vertical window frame and the horizontal window frame, the connecting profiles are connected to the edge-sealing metal plate by locking screws, and the outdoor side of the edge-sealing metal plate is pressed by the pressure plate.

6. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 2, characterized in that, The heat insulation strip has a protruding groove on the side adjacent to the opening fan frame, and a duckbill-shaped sealing strip is embedded in the groove. The duckbill-shaped sealing strip is used to contact the opening fan frame.

7. The prefabricated thermal insulation curtain wall window system with inwardly opening concealed sash as described in claim 1, characterized in that, The side horizontal window frame is provided with a sliding groove, in which a T-shaped connector is slidably and adjustablely installed. An L-shaped steel connector is fixed to the T-shaped connector by a locking bolt. The L-shaped steel connector is used to fix to the embedded parts on the main structure of the curtain wall.

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