CN112901053A

CN112901053A - Integrated curtain wall structure for sunshade power generation

Info

Publication number: CN112901053A
Application number: CN202110373685.4A
Authority: CN
Inventors: 邹武威; 莫金汉; 武人思; 王馨翊; 岳桓羽
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2021-04-07
Filing date: 2021-04-07
Publication date: 2021-06-04

Abstract

The application provides an integration curtain wall construction of sunshade electricity generation. The integrated curtain wall structure for sunshade power generation comprises a curtain wall structure, a roller shutter and a power generation system. The curtain wall structure comprises a frame, glass, a transmission mechanism, a storage part, a limiting part and the like, wherein one side of the roller shutter is connected with the transmission mechanism, one side of the roller shutter is connected with a limiting rod, and the roller shutter comprises a heat insulation layer, a roller shutter base, a photovoltaic film and a protective film. The roller shutter forms an integrated structure through lamination, and the roller shutter forms a conductive loop through a connecting wire, a storage battery and an electric appliance. This application has simultaneously outer sunshade effect and photovoltaic power generation's function concurrently, has can adjust a roll curtain sunshade area in a flexible way, adapts to different weather conditions, fully reduces the building energy consumption and to the advantage of building power supply, furthest keeps building facade aesthetic feeling moreover.

Description

Integrated curtain wall structure for sunshade power generation

Technical Field

The application relates to the technical field of building curtain walls, in particular to an integrated curtain wall structure for sunshade power generation.

Background

For glass curtain wall buildings, the heat entering the room through the glass occupies a large proportion of the building heat. For such buildings, the heat gain of the building can be reduced by means of sun shading. The inner shading mode (such as curtain) in the shading means keeps the aesthetic feeling of the appearance of the building, but most of the absorbed solar radiation is radiated to the indoor space through the convection heat exchange.

There is a flexible thin-film solar electric curtain which converts light energy into electric energy by attaching a solar cell sheet to the curtain, and is used for a motor and electric equipment. Meanwhile, the curtain is controlled to lift and open and close according to the external environment so as to adjust the indoor light and temperature, and the effect of reducing the energy consumption of the building is achieved. However, this solution places the curtain indoors. After solar radiation enters the room, one part of the solar radiation can be converted into electric energy, the other part of the solar radiation enables the temperature of the curtain to rise, heat is transferred to the room through air convection heat exchange, and the heat insulation effect is poor.

The embedded solar thin film power generation roller shutter has the advantages that the solar thin film battery is arranged between the inner layer glass and the outer layer glass, photoelectric conversion is carried out by the solar thin film battery, and the solar thin film battery and a window are combined to form an integrated structure, so that the effects of sound insulation, heat insulation, light pollution reduction and difficult damage are achieved. However, this solution has the following disadvantages: firstly, the power generation capacity of the solar thin-film battery is reduced due to the reflection action of the outer layer glass, and the utilization of solar energy is not facilitated; secondly, the temperature of the solar thin film battery rises after solar radiation, and the solar thin film battery conducts heat to indoor radiation, so that the energy consumption is increased; after the temperature of the film rises, an effective heat dissipation means is lacked, and the photoelectric conversion efficiency is reduced; the integrated structure has higher cost and is heavier due to the adoption of double-layer glass, and the popularization is not facilitated; the method is only suitable for newly-built buildings, and has higher modification cost and lower flexibility for the already-built buildings.

Disclosure of Invention

To ameliorate or solve at least one of the problems mentioned in the background, the present application provides an integrated curtain wall structure for sunshade power generation.

The application provides a sunshade power generation integrated curtain wall structure which comprises a containing part and a roller shutter,

the rolling shutter can be rolled and stored in the storage part, when the rolling shutter is unfolded, the rolling shutter is positioned outdoors,

and a photovoltaic film is integrated on the roller shutter.

In at least one embodiment, the sunshade power generation integrated curtain wall structure comprises a frame and a sliding chute, wherein the sliding chute is fixed on the frame,

the roller shutter also comprises a roller shutter substrate, the photovoltaic film is arranged on one surface of the roller shutter substrate facing outdoors,

the roller shutter can be unfolded from the chute.

In at least one embodiment, the roller shade further comprises a thermal insulation layer disposed on a side of the roller shade substrate facing the interior of the room, the thermal insulation layer comprising a material having an emissivity of less than 0.2.

In at least one embodiment, the material in the thermal barrier layer includes at least one of silver, aluminum, gold, copper, titanium nitride film, polyurethane copper composite coating.

In at least one embodiment, a convex structure is arranged on the surface of the heat insulation layer facing the indoor.

In at least one embodiment, the roller shutter further comprises a protective film, the protective film is arranged on one side of the photovoltaic film facing the outdoor, and the material of the protective film comprises magnesium fluoride or ethylene-vinyl acetate copolymer.

In at least one embodiment, one side of the roller shutter, which is far away from the containing part when the roller shutter is unfolded, is connected with a limiting rod, two ends of the limiting rod are connected with limiting bulges through connecting rods or connecting wires,

a limiting baffle is arranged in the sliding groove, the limiting baffle is provided with a gap, the width of the gap is larger than the radial dimension of the connecting rod or the connecting line and smaller than the radial dimension of the limiting bulge,

the connecting rod or the connecting line is arranged in the gap, and the limiting rod moves along the track defined by the gap.

In at least one embodiment, the sunshade power generation integrated curtain wall structure further comprises a lead, wherein the lead is used for being connected with a storage battery and/or an electrical appliance, and electric energy generated by the photovoltaic film is stored in the storage battery and/or applied to the electrical appliance.

In at least one embodiment, the storage portion is disposed on a top or a side portion of the frame, and a transmission mechanism is disposed in the storage portion and used for receiving the roller blind into the storage portion or extending the roller blind out of the storage portion and spreading the roller blind out of the chute.

In at least one embodiment, the receiving part has an opening through which the roll screen is received into the receiving part,

the sunshade power generation integrated curtain wall structure also comprises a limiting part, the limiting part is arranged at the opening of the containing part, the limiting part is provided with a limiting part gap,

the width of the spacing part gap is larger than the thickness of the roller shutter and smaller than the radial dimension of the spacing rod.

This application is based on photovoltaic power generation technology, has integrateed the photovoltaic film on setting up in outdoor roll curtain. Meanwhile, the storage part is utilized to control the rolling screen to be stored and released, so that a user can select sun shading power generation or vision field provision according to weather and season conditions. The photovoltaic film arranged outdoors can effectively reduce the building heat gain, improve the solar energy absorption efficiency, and is clean and environment-friendly.

Drawings

Fig. 1 shows a partial structural schematic diagram of a sunshade power generation integrated curtain wall structure according to an embodiment of the application.

FIG. 2 shows a side view of a sunshade power generating integrated curtain wall structure according to an embodiment of the present application.

FIG. 3 illustrates a side view of a sunshade power generation integrated curtain wall structure according to another embodiment of the present application.

Fig. 4 shows a bottom view of the chute position of the sunshade power generation integrated curtain wall structure according to the embodiment of the present application.

Fig. 5 shows a structural schematic diagram of a roller shutter of a sunshade power generation integrated curtain wall structure according to an embodiment of the present application.

Fig. 6 and 7 show a convex structure schematic diagram of a heat insulation layer of the sunshade power generation integrated curtain wall structure according to the embodiment of the application.

Description of the reference numerals

1, a frame; 2 a storage part; 3, glass; 4, rolling a curtain; 5, a chute; 6, a transmission mechanism; 9 a storage battery; 10, using an electric appliance; 11, a limiting rod; 12 limiting baffle plates; 13 limiting bulges; 14 a limiting part; 16 connecting rods or wires; 17 gaps; 18 spacing part gaps; 19 opening is formed;

41 a heat insulation layer; 411 a raised structure;

42 a roller shade substrate; 43 a photovoltaic film; 44 protective film.

Detailed Description

Exemplary embodiments of the present application are described below with reference to the accompanying drawings. It should be understood that the detailed description is only intended to teach one skilled in the art how to practice the present application, and is not intended to be exhaustive or to limit the scope of the application.

The application provides an integrated curtain wall structure of sunshade electricity generation, as shown in fig. 1, 2, 3, the integrated curtain wall structure of sunshade electricity generation can include frame 1, storage part 2, glass 3 and roll up curtain 4.

The glass 3 is arranged in the frame 1 to form a glass curtain wall. The housing 2 may be provided at the top or the side of the frame 1, and the roll screen 4 may be rollably housed in the housing 2. In particular, when the roller shutter 4 is unwound, the roller shutter 4 is located on the side of the glass curtain wall facing outdoors, i.e., the roller shutter 4 is located outdoors. Further, a photovoltaic film 43 capable of generating electricity using solar energy is integrated on the roll screen 4. It should be understood that photovoltaic film 43 is a mature prior art capable of utilizing solar energy to generate electricity.

The solar radiation, in addition to enabling the roller blind 4 to generate electricity, also brings a certain amount of thermal energy to the roller blind 4. If the roll screen 4 is disposed indoors, inevitably, the roll screen 4 transfers heat energy to the indoor space along with convection of air. For rolling up curtain setting at indoor technical scheme, this application will roll up curtain 4 and set up outdoors, can reduce indoor getting hot. In addition, the outdoor environment is more beneficial to the heat dissipation of the roller shutter 4, and the influence of high temperature on the photoelectric conversion efficiency is prevented.

The glass 3 has a reflection effect on sunlight, the sunlight penetrates through the glass, and the technical scheme that the sunlight irradiates the photovoltaic film 43 arranged indoors leads to reduction of the power generation amount of the photovoltaic film 43. This application will integrate rolling up curtain 4 of photovoltaic film 43 and set up outdoors, namely, photovoltaic film 43, or roll up curtain 4 and be located glass 3's the outside, and the sun can directly shine photovoltaic film 43, and is more high-efficient to the utilization of solar energy.

In high-rise buildings, the roller blind for shading the outside is unstable, and the influence of high-altitude wind pressure needs to be considered. In order to improve or solve the stability problem of the external roller blind arrangement, the present application proposes a sliding groove 5. As shown in fig. 2, 3 and 4, the sunshade and power generation integrated curtain wall structure can further comprise a chute 5. The roller shutter 4 can be unfolded in the sliding groove 5, the opening and closing degree of the roller shutter 4 can be adjusted according to factors such as weather, the roller shutter 4 is fixed, and the influence of wind pressure in a high-rise building is reduced.

The sliding chute 5 can be fixed to the frame 1, for example, the sliding chute 5 is fixed to the outdoor side of the frame 1, or the sliding chute 5 is fixed to the inside of the frame 1, close to the glass 3, and is made into an integrated structure. The integrated structure is more stable and more convenient when being applied to new buildings. It is to be understood that the specific arrangement of the chute 5 is not limited. A limit baffle 12 is arranged in the sliding groove 5, and the limit baffle 12 is provided with a gap 17.

The stopper rod 11 may be connected to a side of the roll screen 4 away from the storage part 2 when the roll screen 4 is unwound. Referring to fig. 1 to 4, a stopper rod 11 may be provided at the bottom edge of the roll screen 4. The diameter of the stopper rod 11 is larger than the thickness of the roll screen 4 (described later). Further, referring to fig. 4, a connecting rod or a connecting wire 16 may be provided at both ends of the stopper rod 11, and the stopper protrusion 13 may be connected to the connecting rod or the connecting wire 16. It will be appreciated that if the rolling shutter is in a laterally retracted and extended form, the stopper rod 11 may be provided in both the left and right sides, and on the side away from the storage part 2 when extended.

In the present application, the width of the slot 17 is greater than the radial dimension (e.g., diameter) of the connecting rod or line 16 and less than the radial dimension (e.g., diameter) of the stop lug 13. The connecting rod or connecting line 16 is arranged in the gap of the limit stop 12, the limit rod 11 moves along the track defined by the gap 17, and the moving range of the roller shutter 4 can be limited accordingly. The stopper rod 11 may be a metal rod. The shaking of the roller shutter 4 can be reduced under the action of the gravity of the limiting rod 11. Through the measures, the influence of high-level wind pressure is overcome, and the purposes of fixing the flexible photovoltaic film and enhancing the stability are achieved.

The receiving part 2 may be provided at the top or side of the frame 1, and may be provided indoors or outdoors. The housing 2 is provided with a transmission mechanism 6, and the transmission mechanism 6 is used for housing the roller shutter 4 into the housing 2. The transmission mechanism 6 may be a reel, and the roller shutter 4 is stored in the storage portion 2 by a motor or the roller shutter 4 is extended from the storage portion 2 to be unwound from the chute 5. The user can adjust the degree of unwinding of the roll screen 4 according to factors such as weather and season.

As shown in fig. 3 and 4, the housing 2 may have an opening 19, and the roll screen 4 may be housed into the housing 2 through the opening 19. The integrated curtain wall structure for sunshade and power generation further comprises a limiting part 14, and the limiting part 14 can be arranged at an opening of the accommodating part 2.

The stopper 14 has a stopper gap 18, and the width of the stopper gap 18 is larger than the thickness of the roller shutter 4 and smaller than the radial dimension of the stopper rod 11 (for example, when the stopper rod 11 is a cylindrical rod, the radial dimension of the stopper rod 11 is the diameter of the stopper rod 11). When the rolling shutter 4 is retracted, the rolling shutter 4 can pass through the spacing part gap 18, and the spacing rod 11 will be caught at the spacing part gap 18. Namely, the position-limiting part 14 can serve as a movement end point of the position-limiting rod 11, and plays a positioning role. The stopper portion 14 may include two or more balls, or two or more rollers, etc. The present application is not limited to the specific shape and position of the stopper portion 14.

As shown in fig. 5 and 6, the roll screen 4 of the present application may include a heat insulating layer 41, a roll screen substrate 42, a photovoltaic film 43, and a protective film 44. The roller shutter 4 can be laminated and packaged into an integrated structure with the thickness of about 5mm, and the roller shutter is good in toughness and can be curled.

The rolling curtain substrate 42 may be made of cloth or other flexible materials, and tungsten filaments may be doped into the rolling curtain substrate 42 to achieve flexibility and toughness. The photovoltaic film 43 is disposed on the outdoor-facing surface of the roll screen substrate 42, and functions as photovoltaic power generation. The protective film 44 is disposed on the outdoor side of the photovoltaic film 43, and the material of the protective film 44 may include magnesium fluoride or ethylene-vinyl acetate copolymer (EVA), which can reduce light reflection to the maximum extent and has the functions of preventing dust and protecting the photovoltaic film 43.

The heat insulation layer 41 is disposed on a side of the rolling screen substrate 42 facing the indoor, and the heat insulation layer 41 includes a material with low emissivity, such as silver, aluminum, gold, copper, titanium nitride (TiN) thin film, polyurethane copper (PU/Cu) composite coating, etc. with emissivity lower than 0.2. More preferably, the emissivity of the low emissivity material is about 0.1. The emissivity of the roller shutter 4 is low, and radiation heat transfer into the room can be reduced. The side of the heat insulation layer 41 facing the indoor space may be further provided with a convex structure 411.

As shown in fig. 6 and 7, the protrusion 411 may be a cylindrical protrusion uniformly arranged on the surface of the thermal insulation layer 41. In the embodiment where the protrusion structure 411 is a cylindrical protrusion, the diameter of the cylinder may be 10-20 micrometers, and the height may be 20-60 micrometers. The raised structures 411 may be electrochemically disposed on the surface of the raised structures, similar to fins, to increase the heat dissipation area. The material of the protruding structures 411 may be a metal material such as gold, silver, copper, chromium, or aluminum, or a conductive plastic such as polyimide.

The sunshade and power generation integrated curtain wall structure can further comprise a lead (not shown in the figure) which is used for connecting a storage battery 9 and/or an electric appliance 10 arranged indoors. The photovoltaic film 43 and the wires may form a power generation system, and the electric energy generated by the photovoltaic film 43 is stored in the storage battery 9 and/or applied to the electrical appliance 10 through the wires.

It will be appreciated that the curtain wall construction may also include a controller which may control the rolling or unrolling of the roller blind 4. Optionally, the curtain wall structure may further comprise a temperature sensor, a light (intensity) sensor, a wind speed sensor, etc., which may be connected to a controller to enable automatic rolling or unrolling of the roller shutter 4.

This application is when guaranteeing building facade aesthetic feeling, has outer sunshade and photovoltaic power generation's function concurrently, has and to adjust flexible photovoltaic film sunshade area in a flexible way, adapts to different weather conditions, fully reduces the building energy consumption and to the effect of building power supply. This application can be applied to new building or renovate the integrated structure of building central glass curtain wall and roll up curtain sunshade electricity generation, perhaps can reform transform on current glass curtain wall's basis, for example fix spout 5, roll up curtain 4 outdoor, make traditional wall body realize the photovoltaic power generation function. The transformation mode is flexible, and the cost is lower.

In addition, the curtain wall structure of the present application may also be integrated or mounted to existing windows. In this case, the frame 1 may be, but need not be, a frame (sash) of an existing window. The curtain wall construction of the present application may no longer comprise glass 3, or glass 3 may be the glass of an existing window.

Compare with traditional glass curtain wall, this application combines together building curtain wall outer sunshade and photovoltaic power generation through at the flexible photovoltaic film material of glass curtain wall surface integration to solve the higher problem of area glass curtain wall building air conditioner energy consumption such as tropical, subtropical zone and still keep the whole aesthetic feeling of building outward appearance. When the sun is needed to be shaded, the flexible photovoltaic film is unfolded through the transmission mechanism, and the effects of shading and generating electricity are achieved. Meanwhile, the user can control the folding and unfolding degree of the film, so that the visual field of indoor personnel is guaranteed, the effect of indoor lighting requirements is guaranteed, the building energy consumption is effectively reduced, and electric energy is provided for the building.

While the foregoing is directed to the preferred embodiment of the present application, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the application.

Claims

1. An integrated curtain wall structure for shading sun and generating electricity, which is characterized in that,

the sunshade power generation integrated curtain wall structure comprises a containing part (2) and a roller shutter (4),

the rolling shutter (4) can be rolled and stored in the storage part (2), when the rolling shutter (4) is unfolded, the rolling shutter (4) is positioned outdoors,

the roller shutter (4) is integrated with a photovoltaic film (43).

2. The sunshade power generation integrated curtain wall structure as claimed in claim 1,

the sunshade power generation integrated curtain wall structure comprises a frame (1) and a sliding chute (5), wherein the sliding chute (5) is fixed on the frame (1),

the roller shutter (4) further comprises a roller shutter substrate (42), the photovoltaic film (43) is arranged on one surface of the roller shutter substrate (42) facing outdoors,

the roller blind (4) can be unwound from the chute (5).

3. The sunshade power generation integrated curtain wall structure as claimed in claim 2,

the roller shutter (4) further comprises a heat insulation layer (41), wherein the heat insulation layer (41) is arranged on one surface of the roller shutter substrate (42) facing the indoor, and the heat insulation layer (41) comprises a material with emissivity smaller than 0.2.

4. The sunshade power generation integrated curtain wall structure as claimed in claim 3,

the material in the heat insulation layer (41) comprises at least one of silver, aluminum, gold, copper, a titanium nitride film and a polyurethane copper composite coating.

5. The sunshade power generation integrated curtain wall structure as claimed in claim 3,

a convex structure (411) is arranged on one surface of the heat insulation layer (41) facing the indoor space.

6. The sunshade power generation integrated curtain wall structure as claimed in claim 1,

the roller shutter (4) further comprises a protective film (44), the protective film (44) is arranged on one surface, facing the outdoor, of the photovoltaic film (43), and the material of the protective film (44) comprises magnesium fluoride or ethylene-vinyl acetate copolymer.

7. The sunshade power generation integrated curtain wall structure as claimed in claim 2,

one side of the roller shutter (4) far away from the containing part (2) when the roller shutter (4) is unfolded is connected with a limiting rod (11), two ends of the limiting rod (11) are connected with limiting bulges (13) through connecting rods or connecting wires (16),

a limiting baffle (12) is arranged in the sliding groove (5), the limiting baffle (12) is provided with a gap (17), the width of the gap (17) is larger than the radial dimension of the connecting rod or the connecting line (16) and smaller than the radial dimension of the limiting bulge (13),

the connecting rod or connecting line (16) is arranged in a gap (17), and the limiting rod (11) moves along a track defined by the gap (17).

8. The sunshade power generation integrated curtain wall structure as claimed in claim 1,

the sunshade power generation integrated curtain wall structure further comprises a lead, wherein the lead is used for being connected with a storage battery (9) and/or an electrical appliance (10), and electric energy generated by the photovoltaic film (43) is stored in the storage battery (9) and/or applied to the electrical appliance (10).

9. The sunshade power generation integrated curtain wall structure as claimed in claim 2,

the accommodating part (2) is arranged at the top or the side part of the frame (1), a transmission mechanism (6) is arranged in the accommodating part (2), and the transmission mechanism (6) is used for accommodating the roller shutter (4) into the accommodating part (2) or extending the roller shutter (4) out of the accommodating part (2) and unfolding the roller shutter from the chute (5).

10. The sunshade, power generation integrated curtain wall structure as claimed in claim 7,

the storage part (2) has an opening (19), the roller blind (4) is stored into the storage part (2) through the opening (19),

the sunshade power generation integrated curtain wall structure further comprises a limiting part (14), the limiting part (14) is arranged at the opening of the accommodating part (2), the limiting part (14) is provided with a limiting part gap (18),

the width of the spacing part gap (18) is larger than the thickness of the roller shutter (4) and smaller than the radial dimension of the spacing rod (11).