Multifunctional curtain wall with composite structure and using method thereof

Abstract

The present invention relates to a multifunctional curtain wall with a composite structure, and its use method, within the technical field of building envelope structures. The device comprises a plurality of curtain wall structural units spliced ​​in parallel, each comprising a glass back panel, ribs, a pin box, and a scroll structure system forming a substantially rectangular curtain wall cavity. Reflectors are disposed on both sides of the cavity. The reflector is elliptical in shape, and has two reflective hammers, one located at the upper and lower focal points of the ellipse. The glass back panel is provided with switchable windows at the upper and lower portions. The upper side of the ribs is provided with covered vents. The scroll structure system comprises a non-film section, a light-transmitting film section, and a reflective film section, which are switched by rotating upper and lower scroll assemblies. The reflective film section is provided with a light-collecting hole. When in use, the interior rooms of a building can be cooled and ventilated, and the operating mode can be switched according to the needs of the occupants, thereby improving the indoor environmental quality and human comfort without consuming energy.

Description

Technical Field

[0001] The present invention relates to the technical field of building enclosure structures, in particular to a multifunctional composite structure curtain wall device. Background Art

[0002] A curtain wall is a lightweight, non-load-bearing enclosure wrapped around the main structure of a building. It can be made of glass, metal, or stone panels. Traditional curtain walls primarily serve the purpose of providing enclosure and decoration. Recently developed breathing curtain walls have been given the added benefit of insulation and ventilation. Breathing curtain walls typically consist of two walls, one inside and one outside, relying on air ducts between them for ventilation. However, due to thermal pressure, ventilation is difficult to optimize. Furthermore, most systems lack the ability to adapt to seasonal and weather conditions, particularly in extreme climates. Consequently, they are unable to effectively address the needs of indoor occupant comfort and energy conservation. If curtain wall structural design could harness natural energy to effectively insulate and enhance ventilation in the summer, effectively increase warmth and maintain warmth in the winter, and switch operating modes based on meteorological conditions, particularly in extreme climates, such as the ability to isolate radiant heat while maintaining a certain level of natural light, the performance of the curtain wall could be enhanced, reducing investment in other building environmental control equipment. This, in turn, improves the thermal environment within the building and achieves energy savings. Summary of the Invention

[0003] The purpose of the present invention is to provide a multifunctional curtain wall with a composite structure and a method for using the same. By means of structural design and technical means, natural energy is utilized to achieve effective heat insulation and enhanced ventilation inside the building in summer, effective heating and warmth preservation in winter, and switching working conditions according to meteorological conditions. Especially for extreme climates, the curtain wall can isolate radiant heat while meeting certain natural lighting conditions, thereby improving indoor human comfort without consuming energy.

[0004] To this end, the technical solution of the present invention is as follows: a multifunctional curtain wall of a composite structure, comprising a plurality of curtain wall structural units spliced ​​in parallel, the curtain wall structural units comprising a glass back panel, a rib panel, a pin box, a scroll structure system, a reflector and a reflective cone; the glass back panel is located on the facade of the building, the rib panel is located on the outside of the glass back panel and is perpendicular to the glass back panel, there are two pin boxes, respectively located at the top and bottom of the rib panel, and there are two scroll structure systems, respectively located at the top and bottom of the rib panel; the glass back panel, the rib panel, the pin box and the scroll structure system together form a curtain wall cavity that is approximately rectangular, and the reflector is arranged on both sides of the cavity; the reflector is elliptical as a whole, and there are two reflective cones, respectively located at the upper and lower focal positions of the ellipse; the glass back panel is provided with openable windows on the upper and lower parts, the glass back panel above the upper window is provided with a heat-absorbing coating or a directly black heat-absorbing plate on the side facing the outdoors, and the lower glass back panel is transparent glass; the upper side of the rib panel is provided with a covered vent; The reel structure system includes a reel support, a reel assembly, a reel hanging rope, a film-free section, a light-transmitting film section and a reflective film section; the reel support is fixedly connected to the upper and lower ends of the two ribs, there are two reel assemblies, which are respectively fixedly connected to the reel supports at the upper and lower ends, and the reel assembly includes a reel shell and a reel; there are two reel hanging ropes, which are respectively located on both sides between the upper and lower reel assemblies; between the two reel hanging ropes, there are film-free sections, light-transmitting film sections and reflective film sections from top to bottom, and the film-free sections, light-transmitting film sections and reflective film sections are wound on the upper and lower reel assemblies and switched by rotating the upper and lower reel assemblies; the reflector is A long thin plate bent into an elliptical shape, the inner surface of which is coated with a mirror reflective paint with a high reflectivity to solar radiation; the top and bottom of the reflective plate are connected to a pin box; two reflective cones are connected to each other and rotatably connected to the pin box; the reflective cone is an isosceles right triangular prism, the surfaces of the two right-angled sides of the reflective cone are coated with a paint with a high reflectivity to solar radiation, and the surface of the base of the isosceles right triangle of the reflective cone is provided with a heat-absorbing coating; a reflective film light-collecting hole is provided on the upper part of the reflective film segment, and when the reflective film segment is pulled out from the reel assembly, the position of the reflective film light-collecting hole corresponds to the upper reflective cone.

[0005] Furthermore, the pin box is a rectangular box made of lightweight aluminum alloy, and the two sides of the pin box are connected to the ribs via pins; bolts are provided at the top and bottom of the reflective plate, and the bolts are rotatably connected to the pin box. The bolts are connected to the reflective cone via a reflective cone vertical rope, and an electric device is provided in the pin box to drive the reflective cone vertical rope to rotate.

[0006] Furthermore, the ribs are arranged at the edge of the glass back plate, and two adjacent curtain wall structure units share one rib.

[0007] Furthermore, the ribs are installed up and down in the embedded grooves of the top and bottom floor slabs of the building, and multiple ribs are arranged at equal intervals. The ribs and the glass back panel are sealed with silicone structural adhesive.

[0008] Furthermore, the window is an electric window that opens sideways or opens toward the room and is equipped with an electric device.

[0009] Furthermore, the lengths of the non-film section, the light-transmitting film section and the reflective film section are all equal to the length of the rib; wherein, the light-transmitting film section is a thin film material with high transmittance to solar radiation, and the reflective film section is provided with a thin film material with high reflectivity to solar radiation on the outward side, and a white diffuse reflection coating on the inward side.

[0010] In order to ensure that the reflector is fixed and stable, the reflector is elastically connected to the ribs via a spring.

[0011] Furthermore, the bottom of the rib is provided with a drain hole with holes facing outward and tilted downward, so that condensed water can be continuously discharged.

[0012] The method of using the present invention is to switch different functional sections of the reel structure system by adjusting the reel drop rope to change the curtain wall working conditions and achieve at least one of the following five working conditions:

[0013] (1) Hot summer conditions:

[0014] During hot summer days, the entire reflective film segment is positioned between the upper and lower scroll assemblies. At this point, the majority of sunlight is reflected by the reflective film segment, giving the curtain wall excellent thermal insulation. A small amount of sunlight enters the curtain wall cavity through the reflective film light-collecting apertures and is reflected by the reflective cones onto the upper half of the reflector. Based on the reflection principle of an elliptical surface, the sunlight is reflected by the specular reflective coating on the upper half of the reflector to near the lower focal point of the elliptical reflector. Then, the lower reflective cones reflect the light onto the white diffuse reflective coating on the inner side of the reflective film segment, and then back into the interior space. This system allows for daylighting at a certain work surface height while minimizing heat gain and avoiding glare. Furthermore, the light apertures are located at the upper part of the curtain wall, where the area heated by solar radiation is also high, minimizing the impact on the thermal environment at human height. Furthermore, due to the vertical height difference between the vents at the upper end of the ribs and the windows at the lower end of the glass backplane, the lower windows and vents can be opened in stages, achieving a certain degree of thermal pressure ventilation within the room.

[0015] (2) General working conditions in summer:

[0016] In normal summer weather, a small portion of the light-transmitting film segments and a large portion of the reflective film segments are positioned between the upper and lower scroll assemblies. At this point, most of the sunlight is reflected by the reflective film segments, giving the curtain wall a certain degree of thermal insulation. A small portion of sunlight passes through the light-transmitting film segments and the upper windows into the room, providing a certain degree of daylight. Furthermore, there is a certain vertical height difference between the vents at the upper ends of the ribs and the lower windows. The sunlight, combined with the upper glass back panel with a heat-absorbing coating, heats the air in the upper light-transmitting film segment area of ​​the curtain wall space to a certain extent, increasing the vertical temperature difference within the curtain wall cavity and achieving excellent thermal pressure ventilation in the room.

[0017] (3) Transition season conditions:

[0018] During the transition season, the entire non-film section is located between the upper and lower scroll assemblies. At this time, sunlight directly passes through the non-film section, then through the glass back panel and windows into the room, providing the room with sufficient daylight. On the other hand, air can also directly enter the room through the non-film section and windows, achieving good wind pressure ventilation in the room.

[0019] (4) Winter daytime working conditions:

[0020] During the day in winter, the translucent film section is positioned between the upper and lower reel assemblies. Sunlight then passes directly through the translucent film section, the glass back panel, and the windows into the room, providing excellent daylighting. The reflective cone is rotated 180 degrees, with the side with the heat-absorbing coating facing outdoors. This, together with the upper glass back panel with the heat-absorbing black coating, combines sunlight to heat the air within the curtain wall. When the window is opened, due to the vertical height difference between the upper and lower windows, air from the room enters the curtain wall through the lower window, where it is heated, and then enters the room through the upper window. Furthermore, the vents on the upper ends of the ribs can be opened periodically to allow for a certain amount of air exchange between indoor and outdoor spaces.

[0021] (5) Winter night working conditions:

[0022] At night in winter, the reflective film section is located between the upper and lower scroll assemblies, and the windows are closed to minimize outdoor cold radiation and prevent heat loss.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The device uses natural energy to achieve effective insulation and enhanced ventilation inside the building in summer, and effective heating and warmth in winter. It switches working conditions according to meteorological conditions. Especially for extreme climates, it can isolate radiant heat while meeting certain natural lighting conditions, thereby improving indoor thermal comfort without energy consumption.

[0025] 2. This product can use solar energy to achieve its comprehensive functions without energy consumption.

[0026] 3. This product has a simple structure, low cost, convenient construction, high market feasibility, and can be expected to have certain economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is the front elevation of the curtain wall.

[0028] Figure 2 This is the front elevation of the curtain wall structural unit.

[0029] Figure 3 This is the plan view of the curtain wall structural unit.

[0030] Figure 4 This is the AA section view of the curtain wall structure unit.

[0031] Figure 5 This is the BB section view of the curtain wall structure unit.

[0032] Figure 6 This is a detailed drawing of the top of the AA section of the curtain wall structure unit.

[0033] Figure 7 This is a detailed drawing of the top of the BB section of the curtain wall structure unit.

[0034] Figure 8 This is a detailed drawing of the bottom of the AA section of the curtain wall structure unit.

[0035] Figure 9 This is a detailed drawing of the bottom of the BB section of the curtain wall structure unit.

[0036] Figure 10 Schematic diagram of the glass back panel.

[0037] Figure 11 Schematic diagram of ribs.

[0038] Figure 12 Schematic diagram of the scroll structure system.

[0039] Figure 13 This is a cross-sectional view of a reflective cone.

[0040] Figure 14 This is a schematic diagram of the hot summer working conditions.

[0041] Figure 15 This is the lighting principle diagram of the curtain wall structure unit under hot summer conditions.

[0042] Figure 16 This is a reflection working condition diagram of the upper reflective cone and the lower reflective cone.

[0043] Figure 17 This is a schematic diagram of general working conditions in summer.

[0044] Figure 18This is the ventilation principle diagram of the curtain wall structure unit under general working conditions in summer.

[0045] Figure 19 Schematic diagram of the transition season operating conditions.

[0046] Figure 20 This is a schematic diagram of the working conditions during the day in winter.

[0047] Figure 21 This is the ventilation principle diagram of the curtain wall structure unit under daytime conditions in winter.

[0048] Figure 22 Schematic diagram of the working conditions at winter night.

[0049] In the figure: 1 glass back panel; 2 ribs; 21 vents; 3 pin box; 4 reel structure system; 41 reel support; 42 reel assembly; 421 reel shell; 422 reel; 43 reel hanging rope; 44 film-free section; 45 light-transmitting film section; 46 reflective film section; 47 reflective film light-collecting hole; 5 reflector; 6 window; 7 pin; 8 bolt; 9 spring; 10 reflective cone hanging rope; 11 reflective cone; 12 drain outlet. DETAILED DESCRIPTION

[0050] like Figure 1-9 The present invention relates to a multifunctional composite structural curtain wall, which is composed of a plurality of curtain wall structural units spliced ​​in parallel. Each curtain wall structural unit includes a glass back panel 1, a rib plate 2, a pin box 3, a scroll structure system 4, a reflector 5 and a reflective cone 11. The glass back panel 1 is located on the facade of the building, the rib plate 2 is located on the outside of the glass back panel 1 and is perpendicular to the glass back panel 1, and two adjacent curtain wall structural units share one rib plate 2, which is made of glass. There are two pin boxes 3, which are respectively located at the top and bottom of a group of rib plates 2, and there are two scroll structure systems 4, which are respectively located at the top and bottom of a group of rib plates 2. The glass back panel 1, the rib plates 2, the pin box 3, the scroll structure system 4 and the reflective cone 11 together form a curtain wall cavity that is approximately rectangular, and reflective plates 5 are arranged on both sides of the cavity.

[0051] like Figure 1-11The glass back panel 1 forms the inner wall of the curtain wall. Its upper and lower sections are equipped with windows 6 equipped with electric devices that can automatically open horizontally or toward the interior. The exterior-facing side of the glass back panel 1 above the upper window 6 is coated with a heat-absorbing coating or is simply a black heat-absorbing plate. The lower glass back panel 1 is made of clear glass. Ribs 2 are installed in recessed grooves in the top and bottom slabs of the building. Multiple ribs 2 are evenly spaced and vertically connected to the glass back panel 1. They are sealed with silicone structural adhesive. The outward-facing areas on either side of the upper ends of the ribs 2 are slightly thinner, forming two covered vents 21. The vent covers of these vents 21 are electrically operated. The pin box 3 is a rectangular box made of lightweight aluminum alloy, with a hole at each end. The pin 7 is T-shaped. The non-protruding end is fixed to the rib 2 with a metal component, while the protruding end is inserted into the hole in the pin box 3 and can extend and retract within the cavity of the pin box 3.

[0052] like Figure 1-12 The reel structure system 4 includes a reel support 41, a reel assembly 42, a reel hanging rope 43, a film-free segment 44, a light-transmitting film segment 45, and a reflective film segment 46. There are four reel supports 41, each fixedly connected to the upper and lower ends of the two ribs 2 by metal components. There are two reel assemblies 42, each fixedly connected to the reel support 41 at the upper and lower ends. The reel assembly 42 includes a reel shell 421 and a reel 422. There are two reel hanging ropes 43, one located on either side between the upper and lower reel assemblies 42. Between the two reel hanging ropes 43, from top to bottom, there are arranged a film-free segment 44, a light-transmitting film segment 45, and a reflective film segment 46. The lengths of the film-free segment 44, the light-transmitting film segment 45, and the reflective film segment 46 are all equal to the length of the rib 2. The transparent film segment 45 is made of a thin film material with high solar radiation transmittance. The reflective film segment 46 also has a thin film material with high solar radiation reflectivity on its outward side and a white diffuse reflective coating on its inward side. The film-free segment 44, the transparent film segment 45, and the reflective film segment 46 can be wound onto the upper and lower reel assemblies 42, or any of the three segments can be unwound from the upper and lower reel assemblies 42.

[0053] like Figure 1-13The reflector 5 is a thin, long, elliptical plate, its inner surface coated with a mirror-reflective coating that has a high reflectivity to solar radiation. The width of the reflector 5 is slightly smaller than that of the ribs 2, and there is a gap between the reflector 5 and the transparent film segments 45 and 46. Bolts 8 are installed at the top and bottom of the reflector 5 to connect it to the pin box 3. The middle of the side of the reflector is fixedly connected to the ribs 2. The outer side of the reflector 5 is elastically connected to the inner side of the ribs 2 by a spring 9. A reflective cone hanging rope 10 is connected to the bottom of the bolt 8. The other end of the reflective cone hanging rope 10 is connected to a reflective cone 11. The two reflective cones 11 are located at the upper and lower focal points of the elliptical shape of the reflector 5, respectively, and are connected to each other. The reflective cone hanging rope 10 can be rotated by the electric device in the pin box 3. The reflective cone 11 is an isosceles right triangular prism. The height of the hypotenuse of the triangular cross-section of the triangular prism is equal to the width of the long thin reflective plate 5. The inclined surfaces of the two right-angled sides of the reflective cone 11 are coated with a coating with high reflectivity to solar radiation, and the base of the isosceles right triangle of the reflective cone 11 is provided with a heat-absorbing coating. A reflective film light-collecting hole 47 is defined in the upper portion of the reflective film segment 46. When the reflective film segment 46 is pulled out of the reel assembly 42, the position of the reflective film light-collecting hole 47 corresponds to the reflective cone 11. The bottom of the rib 2 is provided with a drain hole 12 with a hole sloping outward and downward.

[0054] This product can switch the different functional sections of the reel structure system 4 by adjusting the reel drop rope 43 to change the curtain wall working conditions. According to the weather conditions and the needs of indoor occupants, the curtain wall composite structure can be divided into the following five working conditions:

[0055] 1. Hot summer conditions:

[0056] like Figure 14-17 During hot summer weather, the entire reflective film segment 46 is positioned between the upper and lower reel assemblies 42. At this point, the majority of sunlight is reflected by the reflective film segment 46, giving the curtain wall excellent thermal insulation. A small amount of sunlight enters the curtain wall cavity through the reflective film light-collecting aperture 47 and is reflected by the reflective cone 11 onto the upper half of the reflector 5. Based on the reflection principle of an elliptical surface, the sunlight is reflected by the mirror-reflective coating on the upper half of the reflector 5 to near the lower focal point of the elliptical reflector 5. The light is then reflected by the lower reflective cone 11 onto the white diffuse reflective coating on the inner side of the reflective film segment 46 and then back into the room. This system allows for daylighting at a certain work surface height while minimizing heat gain and preventing glare. Furthermore, the light aperture 47 is located at the upper part of the curtain wall, where the area heated by sunlight radiation is also high up, minimizing the impact on the thermal environment at human height. On the other hand, since there is a certain vertical height difference between the vent 21 at the upper end of the rib 2 and the lower window 6 of the glass back panel 1, the lower window 6 and the vent 21 can be opened in stages to achieve a certain degree of heat pressure ventilation in the room.

[0057] 2 General working conditions in summer:

[0058] like Figure 18-19 In normal summer weather, a small portion of the light-transmitting film segment 45 and a large portion of the reflective film segment 46 are positioned between the upper and lower reel assemblies 42. At this point, most of the sunlight is reflected by the reflective film segment 46, giving the curtain wall a certain degree of thermal insulation. A small portion of sunlight passes through the light-transmitting film segment 45 and the upper window 6 into the room, providing a certain degree of daylighting. Furthermore, there is a certain vertical height difference between the vent 21 at the upper end of the rib 2 and the lower window 6. The sunlight, combined with the upper glass back panel 1 with a heat-absorbing coating, heats the air in the area of ​​the light-transmitting film segment 45 in the upper portion of the curtain wall space to a certain extent, increasing the vertical temperature difference within the curtain wall cavity and achieving excellent thermal pressure ventilation in the room.

[0059] 3 Transition season conditions:

[0060] like Figure 20 During the transitional season, the entire film-free section 44 is positioned between the upper and lower reel assemblies 42. Sunlight then passes directly through the film-free section 44, through the glass back panel 1, and into the room through the window 6, providing ample daylight. Air also flows directly through the film-free section 44 and the window 6, ensuring optimal ventilation.

[0061] 4. Winter daytime working conditions:

[0062] like Figure 21 During the day in winter, the light-transmitting film section 45 is positioned between the upper and lower reel assemblies 42. At this time, sunlight directly passes through the light-transmitting film section 45, the glass back panel 1, and the window 6 into the room, providing excellent lighting for the room. The reflective cone 11 is rotated 180 degrees, with the side provided with the heat-absorbing coating facing the outdoors. Together with the upper glass back panel provided with the heat-absorbing black coating, it can combine with sunlight to heat the air inside the curtain wall. When the window 6 is opened, due to the certain vertical height difference between the upper and lower windows 6, the air in the room can enter the curtain wall through the lower window 6, be heated, and then enter the room through the upper window 6. In addition, the vents 21 at the upper end of the rib 2 can be opened in stages to allow a certain amount of air exchange between the indoor and outdoor areas.

[0063] 5. Winter night working conditions:

[0064] like Figure 22 In winter at night, the reflective film section 46 is located between the upper and lower reel assemblies 42, and the window 6 is closed to prevent outdoor cold radiation and heat loss to the greatest extent.

[0065] The present invention is not limited to the above-mentioned embodiments. On the basis of the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some of the technical features therein according to the disclosed technical content without creative labor, and these substitutions and modifications are all within the protection scope of the present invention.

Claims

1. A multifunctional curtain wall with a composite structure, comprising a plurality of curtain wall structural units spliced ​​in parallel, characterized in that: The curtain wall structure unit comprises a glass back panel (1), a rib plate (2), a pin box (3), a scroll structure system (4), a reflector (5) and a reflective cone (11); the glass back panel (1) is located on the exterior of the building, the rib plate (2) is located outside the glass back panel (1) and is perpendicular to the glass back panel (1), there are two pin boxes (3), which are respectively located at the top and bottom of the rib plate (2), and there are two scroll structure systems (4), which are respectively located at the top and bottom of the rib plate (2); the glass back panel (1), the rib plate (2), the pin box (3), the scroll structure system (4) The system (4) together forms a curtain wall cavity that is approximately rectangular, and the reflective plates (5) are arranged on both sides of the cavity; the reflective plate (5) is elliptical in shape as a whole, and there are two reflective cones (11), which are respectively located at the upper and lower focal positions of the ellipse; the glass back plate (1) is provided with switchable windows (6) at the upper and lower parts, respectively; the glass back plate (1) above the upper window (6) is provided with a heat-absorbing coating or a directly black heat-absorbing plate facing the outside on the side facing the outside, and the lower glass back plate (1) is transparent glass; the upper side of the rib plate (2) is provided with a covered vent (21); The reel structure system (4) includes a reel support (41), a reel assembly (42), a reel hanging rope (43), a film-free segment (44), a light-transmitting film segment (45) and a reflective film segment (46); the reel support (41) is fixedly connected to the upper and lower ends of the two ribs (2); there are two reel assemblies (42), which are respectively fixedly connected to the reel supports (41) at the upper and lower ends; the reel assembly (42) includes a reel shell (421) and a reel (422); there are two reel hanging ropes (43), which are respectively located on both sides between the upper and lower reel assemblies (42); between the two reel hanging ropes (43), a film-free segment (44), a light-transmitting film segment (45) and a reflective film segment (46) are arranged in sequence from top to bottom; the film-free segment (44), the light-transmitting film segment (45) and the reflective film segment (46) are wound on the upper and lower reel assemblies (42) , switched by rotating the upper and lower reel assemblies (42); the reflective plate (5) is a long thin plate bent into an elliptical shape, and the inner surface is coated with a mirror reflective paint with a high reflectivity to solar radiation; the top and bottom of the reflective plate (5) are connected to the pin box (3); the two reflective cones (11) are connected to each other and rotatably connected to the pin box (3); the reflective cone (11) is an isosceles right triangular prism, and the surfaces of the two right-angled sides of the reflective cone (11) are coated with a paint with a high reflectivity to solar radiation, and the surface of the isosceles right triangle base of the reflective cone (11) is coated with a heat-absorbing coating; a reflective film light-collecting hole (47) is opened on the upper part of the reflective film segment (46), and when the reflective film segment (46) is pulled out from the reel assembly (42), the position of the reflective film light-collecting hole (47) corresponds to the upper reflective cone (11).

2. The multifunctional curtain wall of a composite structure according to claim 1, characterized in that: The pin box (3) is a rectangular box made of lightweight aluminum alloy. Both sides of the pin box are connected to the ribs (2) via pins (7). Bolts (8) are provided at the top and bottom of the reflective plate (5). The bolts (8) are rotatably connected to the pin box (3). The bolts (8) are connected to the reflective cone (11) via a reflective cone vertical rope (10). An electric device capable of driving the reflective cone vertical rope (10) to rotate is provided in the pin box (3).

3. The multifunctional curtain wall with a composite structure according to claim 1, characterized in that: The rib plate (2) is arranged at the edge of the glass back plate (1), and two adjacent curtain wall structural units share one rib plate (2).

4. The multifunctional curtain wall of composite structure according to claim 3, characterized in that: The ribs (2) are installed in the grooves of the top and bottom floors of the building. The ribs (2) are arranged at equal intervals. The ribs (2) and the glass back panel (1) are sealed with silicone structural adhesive.

5. The multifunctional curtain wall of a composite structure according to any one of claims 1 to 4, characterized in that: The window (6) is an electric window that is equipped with an electric device and can be opened horizontally or toward the interior.

6. A multifunctional curtain wall with a composite structure according to any one of claims 1 to 4, characterized in that: The lengths of the non-film section (44), the light-transmitting film section (45) and the reflective film section (46) are all equal to the length of the rib (2); wherein the light-transmitting film section (45) is a thin film material with high solar radiation transmittance, and the reflective film section (46) is provided with a thin film material with high solar radiation reflectivity on the outward side, and a white diffuse reflection coating on the inward side.

7. The multifunctional curtain wall of a composite structure according to any one of claims 1 to 4, characterized in that: The middle portion of the reflective plate (5) is fixedly connected to the rib plate (2); the outer side of the reflective plate (5) is elastically connected to the rib plate (2) via a spring (9).

8. The multifunctional curtain wall of a composite structure according to any one of claims 1 to 4, characterized in that: The bottom of the rib plate (2) is provided with a drain hole (12) with holes facing outward and sloping downward.

9. The method for using a multifunctional curtain wall with a composite structure according to any one of claims 1 to 4, characterized in that: By adjusting the reel drop rope (43), different functional sections of the reel structure system (4) are switched to change the curtain wall working conditions, including at least one of the following five working conditions: (1) Hot summer conditions: In hot summer weather, the entire reflective film segment (46) is located between the upper and lower scroll assemblies (42); at this time, most of the sunlight is reflected by the reflective film segment (46), so that the curtain wall has excellent heat insulation performance; a small amount of sunlight enters the curtain wall cavity through the reflective film light-collecting hole (47), and is reflected by the reflective cone (11) to the upper half of the reflective plate (5). According to the reflection principle of the elliptical surface, the sunlight is reflected by the mirror reflective coating on the upper half of the reflective plate (5) to the vicinity of the lower focus of the elliptical reflective plate (5), and then reflected by the reflective cone (11) on the lower side to the reflective film segment (46). 6) on the white diffuse reflective coating on the inside, and then reflected into the indoor space; this system can make the room get lighting at a certain working surface height under the premise of minimum heat gain and avoid glare; in addition, the light hole (47) is located at the upper part of the curtain wall, and the part heated by sunlight radiation is also located at a high position, which has little impact on the thermal environment at human height; on the other hand, since there is a certain vertical height difference between the vent (21) at the upper end of the rib (2) and the lower window (6) of the glass back panel (1), the lower window (6) and the vent (21) can be opened in stages to achieve a certain thermal pressure ventilation in the room; (2) General working conditions in summer: In normal summer weather, a small portion of the light-transmitting film segment (45) and a large portion of the reflective film segment (46) are located between the upper and lower scroll assemblies (42); at this time, most of the sunlight is reflected by the reflective film segment (46), so that the curtain wall has a certain heat insulation performance; a small portion of the sunlight passes through the light-transmitting film segment (45) and the upper window (6) into the room, so that the room is illuminated to a certain extent; on the other hand, there is a certain vertical height difference between the vent (21) at the upper end of the rib (2) and the lower window (6), and the sunlight combined with the upper glass back plate (1) provided with a heat-absorbing coating heats the air in the upper light-transmitting film segment (45) area of ​​the curtain wall space to a certain extent, thereby increasing the vertical temperature difference in the curtain wall cavity and achieving excellent heat pressure ventilation in the room; (3) Transition season conditions: During the transition season, the entire non-film section (44) is positioned between the upper and lower scroll assemblies (42); at this time, sunlight directly passes through the non-film section (44), and then passes through the glass back panel (1) and the window (6) into the room, so that the room is adequately lit; on the other hand, air can also directly enter the room through the non-film section (44) and the window (6), so that good wind pressure ventilation can be achieved in the room; (4) Winter daytime working conditions: During the daytime in winter, the light-transmitting film section (45) is positioned between the upper and lower reel assemblies (42); at this time, sunlight directly passes through the light-transmitting film section (45), the glass back panel (1) and the window (6) into the room, so that the room has excellent lighting; the reflective cone (11) is rotated 180 degrees, with the side provided with the heat-absorbing coating facing the outside, and can heat the air in the curtain wall together with the upper glass back panel (1) provided with the heat-absorbing coating in combination with sunlight; the window (6) is opened, and since there is a certain vertical height difference between the upper and lower windows (6), the air in the room can enter the curtain wall from the lower window (6) and be heated, and then enter the room from the upper window (6); in addition, the vents (21) at the upper end of the rib plate (2) can be opened in stages, so that a certain amount of air exchange can be carried out between the indoor and outdoor areas; (5) Winter night working conditions: At night in winter, the reflective film section (46) is positioned between the upper and lower reel assemblies (42), and the window (6) is closed to minimize outdoor cold radiation and prevent heat loss.

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