Door and window curtain wall heat preservation and heat insulation privacy performance adjusting device

Abstract

The utility model discloses a door and window curtain wall heat preservation and heat insulation privacy performance adjusting device which is installed on the inner side of a glass system and comprises an outer-layer rolling film and an inner-layer rolling film, the upper end of each rolling film is wound on a rotating shaft, the lower end of each rolling film is connected with a heavy lower beam, the left end and the right end of each rolling film are slidably connected into corresponding rolling film guide rails, and sealing wool tops are arranged on the inner layers of the rolling film guide rails. Driving devices are mounted in the two rotating shafts; the film layers of the outer-layer roll film and the inner-layer roll film are respectively a transparent low-radiation sunshade film and a non-transparent inorganic heat insulation film; when the outer-layer roll film descends, the outer-layer roll film and the glass system define a first closed cavity through the first bottom plate; and when the inner-layer roll film descends, the inner-layer roll film and the outer-layer roll film define a second closed cavity through the second bottom plate. The door and window curtain wall is simple in structure and convenient to operate, heat preservation and heat insulation performance adjustment of the door and window curtain wall can be achieved at the same time, and privacy adjustment requirements are met.

Description

Technical Field

[0001] The utility model belongs to the technical field of door and window performance, and specifically relates to a door and window curtain wall thermal insulation and privacy performance regulating device. Background Art

[0002] Doors, windows and curtain walls are bridges that connect indoor and outdoor sound, light and heat, and are the weak link in the heat transfer of the building's overall envelope structure. Heat loss accounts for 40% to 50% of the total heat loss of the building's envelope structure, which has a great impact on the energy consumption of building operation. Therefore, existing technologies mainly focus on improving the thermal performance of doors, windows and curtain walls, such as:

[0003] CN2529581Y discloses a heat-insulating energy-saving curtain, which is made of soft plastic transparent sheet, and is sealed and fixed to the window frame by installing fixings and adhesive tapes, forming a double-layer window with the original window, which does not affect the normal lighting in the room, has good heat-insulating effect, and is easy to install and use. CN2886041Y discloses a reflective energy-saving curtain, which uses a double-layer structure of a cloth material layer and a reflective layer of an aluminum foil material with high reflectivity as a curtain. In the hot summer, sunlight and heat can be blocked outdoors by reflection, thereby achieving the purpose of energy saving and cooling.

[0004] However, the above technology only statically improves the thermal performance of doors, windows and curtain walls. Although it can improve the energy-saving effect of buildings, the degree of improvement is limited. Studies have shown that the non-adjustable thermal performance of doors, windows and curtain walls causes the building to lose at least 20% of its energy-saving rate. Therefore, achieving dynamic adjustability of its thermal performance can further improve the energy-saving effect of buildings. CN101649718A discloses a new type of highly transparent energy-saving curtain, the curtain substrate of which is made of a high-transmittance aging-resistant polymer film or sheet, or an aging-resistant composite polymer film or sheet. The shading surface of the curtain also has a highly transparent or translucent anti-radiation coating or anti-radiation film, which can be made into a retractable movable curtain or a non-retractable fixed curtain. CN116876973A discloses a cascading window shading and heat-insulating device, which adjusts the performance of the entire window by retracting and lowering the shading and heat-insulating curtain. However, the prior art has the following shortcomings:

[0005] (1) It is impossible to adjust the thermal insulation and heat insulation performance of doors, windows and curtain walls at the same time. The existing technology focuses more on the adjustment of sunshade and heat insulation performance, but pays less attention to the thermal insulation performance, ignoring the energy-saving potential of adjusting the thermal insulation and heat insulation performance at the same time.

[0006] (2) The need for indoor privacy in buildings is not considered. Existing technologies mostly start from the perspective of thermal performance and propose measures to improve their performance. It is impossible to improve the thermal and privacy performance of doors, windows and curtain walls through a set of devices. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a door, window, curtain wall thermal insulation and privacy performance adjustment device. The device has a simple structure and is easy to operate. It can simultaneously adjust the door, window, curtain wall thermal insulation and heat insulation performance and meet the privacy adjustment requirements.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thermal insulation privacy performance adjustment device for doors, windows and curtain walls, installed on the inner side of a glass system, comprising an outer roll film and an inner roll film, the outer roll film and the inner roll film are distributed from near to far from the glass system, the upper end of each roll film is wound around a corresponding rotating shaft, and the lower end is connected to a corresponding heavy bottom beam, the left and right ends of each roll film are slidably connected to a corresponding roll film guide rail, the inner layer of the roll film guide rail is provided with a sealing wool strip, and a driving device is installed in both of the rotating shafts; the film layer of the outer roll film is a transparent low-radiation sunshade film, and the film layer of the inner roll film is a non-transparent inorganic thermal insulation film;

[0009] When the outer film roll is lowered, the outer film roll forms a first closed cavity with the glass system through the first bottom plate, one end of the first bottom plate is fixedly connected to the lower end of the outer film roll, and the other end is slidably connected to the glass system;

[0010] When the inner film roll is lowered, the inner film roll forms a second closed cavity with the outer film roll through the second bottom plate, one end of the second bottom plate is fixedly connected to the lower end of the inner film roll, and the other end is slidably connected to the outer film roll.

[0011] Preferably, the transparent low-radiation sunshade film is a composite film with a visible light transmittance of 60-70%, an infrared blocking rate of up to 90%, an ultraviolet blocking rate of up to 90%, and an emissivity of less than 0.3 in the far-infrared band of 2.5-25μm. The composite film has a 50μm thick PET film as a base film, and three reflective layers are compounded on the base film by sputtering or evaporation, which are a silver layer, an aluminum layer and a titanium layer from the inside to the outside.

[0012] Preferably, the material of the non-transparent inorganic thermal insulation film is an aluminum-plated composite woven fabric or an aluminum-plated silicone blanket or an aluminum-plated fiber blanket. The visible light transmittance of the non-transparent inorganic thermal insulation film is 0, and it has thermal insulation and fireproof properties, a thermal conductivity coefficient less than or equal to 0.3W / (m·K), and a fire resistance integrity greater than 30min.

[0013] Preferably, the thickness of the first closed cavity and the second closed cavity is 20 mm to 22 mm.

[0014] Preferably, both the first bottom plate and the second bottom plate are provided with sealing strips.

[0015] Preferably, the first bottom plate and the second bottom plate are transparent or translucent plastic plates.

[0016] Preferably, the driving device is a driving motor, and the driving motor is used to drive the corresponding rotating shaft to rotate.

[0017] Preferably, outer sides of the two rotating shafts are wrapped with a cover.

[0018] Preferably, the outer layer roll film and the inner layer roll film include three adjustment modes in summer, specifically including: summer daytime sunny mode, the outer layer roll film is fully unfolded, and the inner layer roll film is partially unfolded according to a preset ratio for sunshade and heat insulation; summer daytime cloudy mode, the outer layer roll film and the inner layer roll film are fully retracted to ensure lighting; summer night mode, the outer layer roll film and the inner layer roll film are fully unfolded for heat insulation and blocking sight.

[0019] Preferably, the outer layer roll film and the inner layer roll film include three adjustment modes in winter, specifically including: winter daytime sunny mode, the outer layer roll film and the inner layer roll film are all retracted for lighting and heating; winter daytime cloudy mode, the outer layer roll film is fully unfolded, and the inner layer roll film is partially unfolded according to a preset ratio for insulation and lighting; winter night mode, the outer layer roll film and the inner layer roll film are fully unfolded for insulation and blocking sight.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model provides a device for adjusting the thermal insulation and privacy performance of doors, windows and curtain walls. The device adjusts the thermal insulation performance of the entire window by forming a stable closed air layer (i.e., a first closed cavity and a second closed cavity) between the outer film and the glass system and between the inner and outer films. At the same time, the sunshade properties of the film layers of the inner and outer films are utilized, and the inner and outer films are driven to rise or fall through the rotating shafts, thereby adjusting the sunshade and thermal insulation performance of the entire window. In addition, the film layer of the inner film adopts a non-transparent inorganic insulation film to meet the needs of isolating indoor and outdoor sight lines and improving indoor privacy, thereby solving the problems in the prior art that the thermal insulation and heat insulation performance of doors, windows and curtain walls cannot be adjusted simultaneously, and the thermal and privacy performance of doors, windows and curtain walls cannot be improved through a set of devices.

[0022] (2) The utility model provides six adjustment modes for different seasons and periods, including summer daytime sunny mode, summer daytime cloudy mode, summer night mode, winter daytime sunny mode, winter daytime cloudy mode and winter night mode. By adjusting the unfolding (lowering) and folding of the inner layer roll film and the outer layer roll film, different insulation or heat preservation requirements can be met, and consumption reduction and loss reduction can be achieved. It can ensure the insulation, heat insulation and privacy requirements of doors, windows and curtain walls under different meteorological conditions, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1The utility model is a schematic structural diagram of a thermal insulation and privacy performance adjustment device for doors, windows and curtain walls.

[0024] Figure 2 It is a schematic diagram of three adjustment modes of the device of the utility model applied to summer, wherein a, b and c correspond to the summer daytime sunny mode, the summer daytime cloudy mode and the summer night mode respectively.

[0025] Figure 3 It is a schematic diagram of three adjustment modes of the device of the utility model applied to winter, wherein d, e and f correspond to the winter daytime sunny mode, the winter daytime cloudy mode and the winter night mode respectively.

[0026] Among them, 1 is the window frame; 2 is the glass system; 3 is the first bottom plate; 4 is the second bottom plate; 5 is the heavy bottom beam; 6 is the outer film roll; 7 is the inner film roll; 8 is the film roll guide rail; 9 is the first closed cavity; 10 is the second closed cavity; 11 is the rotating shaft; 12 is the driving motor; 13 is the cover. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] Example

[0029] like Figure 1 The figure shows a schematic diagram of the structure of a thermal insulation and privacy performance adjustment device for doors, windows and curtain walls, which is installed on the inner side of the glass system and includes an outer roll film and an inner roll film, the outer roll film and the inner roll film are distributed from near to far from the glass system, the upper end of each roll film is wound around the corresponding rotating shaft, and the lower end is connected to the corresponding heavy bottom beam, the left and right ends of each roll film are slidably connected to the corresponding roll film guide rail, the inner layer of the roll film guide rail is provided with a sealing wool strip, and a driving device is installed in both of the rotating shafts; the film layer of the outer roll film is a transparent low-radiation sunshade film, and the film layer of the inner roll film is a non-transparent inorganic thermal insulation film;

[0030] When the outer film roll is lowered, the outer film roll forms a first closed cavity with the glass system through the first bottom plate, one end of the first bottom plate is fixedly connected to the lower end of the outer film roll, and the other end is slidably connected to the glass system;

[0031] When the inner film roll is lowered, the inner film roll forms a second closed cavity with the outer film roll through the second bottom plate, one end of the second bottom plate is fixedly connected to the lower end of the inner film roll, and the other end is slidably connected to the outer film roll.

[0032] Specifically, the utility model provides a thermal insulation privacy performance adjustment device for doors, windows and curtain walls, which adjusts the thermal insulation performance of the entire window by forming a stable closed air layer (i.e., a first closed cavity and a second closed cavity) between the outer roll film and the glass system of the door, window and curtain wall and the inner and outer roll films. At the same time, the sunshade properties of the film layers of the inner and outer roll films are utilized, and the inner and outer roll films are driven to rise or fall through the respective shafts, thereby achieving the sunshade and heat insulation performance adjustment of the entire window. In addition, the film layer of the inner roll film meets the requirements of isolating indoor and outdoor sight lines and improving indoor privacy by adopting a non-transparent inorganic insulation film, while the film layer of the inner roll film adopts a transparent low-radiation sunshade film, which mainly plays the role of lighting, sunshade and heat preservation.

[0033] Each layer of film roll is equipped with a corresponding rotating shaft, a driving device, a heavy-duty lower beam and a film roll guide rail, and each layer of film roll can be independently raised (folded) or lowered (unfolded). Take the outer layer of film roll as an example to illustrate the use process of the utility model:

[0034] When it is necessary to unfold, the drive motor drives the shaft to rotate in a forward or reverse manner, and the left and right ends of the outer film wrapped on the shaft slide down along the corresponding film guide rails, and at the same time drive the first bottom plate to move downward synchronously. The inner layer of the film guide rail is provided with a sealing strip to ensure that the first closed cavity and the second closed cavity are sufficiently sealed, thereby improving the thermal insulation performance of the system; because the lower end of the outer film is connected to a heavy lower beam, the outer film is always in a taut state during the lifting process. When it descends to the required position, the drive motor is stopped, and the outer film, the glass system and the first bottom plate form a first closed cavity. When it is necessary to fold up, the drive motor drives the shaft to rotate in a reverse or forward manner, thereby driving the two ends of the outer film to slide upward along the film guide rails, and at the same time drive the first bottom plate to move upward synchronously, and stop the drive motor after it rises to the position. The inner film is adjusted to be folded or unfolded according to the same operation process. The utility model has a simple structure and is easy to operate. Through the coordinated use of the inner layer roll film and the outer layer roll film, the thermal insulation performance of doors, windows and curtain walls can be adjusted simultaneously, and the privacy adjustment requirements can be met.

[0035] The transparent low-radiation sunshade film is a composite film with a visible light transmittance of 60-70%, an infrared blocking rate of up to 90%, an ultraviolet blocking rate of up to 90%, and an emissivity of less than 0.3 in the far-infrared band of 2.5-25μm. The composite film uses a 50μm thick PET film as a base film, and three reflective layers are compounded on the base film by sputtering or evaporation. The three reflective layers are silver layer, aluminum layer and titanium layer from the inside to the outside.

[0036] The material of the non-transparent inorganic thermal insulation film is aluminum-plated composite woven fabric or aluminum-plated silicone blanket or aluminum-plated fiber blanket. The visible light transmittance of the non-transparent inorganic thermal insulation film is 0, and it has thermal insulation and fireproof properties, a thermal conductivity coefficient is less than or equal to 0.3W / (m·K), and a fire resistance integrity is greater than 30min.

[0037] The thickness of the first closed cavity and the second closed cavity is 20 mm to 22 mm.

[0038] Specifically, this thickness corresponds to the distance between the surface of the outer film and the glass system when it is lowered, or the distance between the surfaces of the inner and outer films when both are lowered. The thickness of the first and second closed cavities both meet the above range, thereby achieving the best thermal insulation effect.

[0039] The first bottom plate and the second bottom plate are both provided with sealing wool strips.

[0040] Specifically, this arrangement ensures that the first closed cavity and the second closed cavity are air-tight, thereby improving the sealing performance.

[0041] The first bottom plate and the second bottom plate are transparent or translucent plastic plates.

[0042] Specifically, the first bottom plate and the second bottom plate are made of materials such as PC and PVC, so as to allow light to enter the room as much as possible without affecting indoor lighting.

[0043] The driving device is a driving motor, which is used to drive the corresponding rotating shaft to rotate. Specifically, in this embodiment, the driving motor is a tubular motor, the rotating shaft is made of aluminum alloy material, and the driving motor can drive the rotating shaft forward or reverse, thereby driving the corresponding inner layer or outer layer roll film to rise or fall.

[0044] The outer sides of the two rotating shafts are both wrapped with a cover shell.

[0045] Specifically, the cover can prevent the shaft from being directly exposed, thereby playing a dust-proof role and improving the aesthetics of the device.

[0046] The outer layer roll film and the inner layer roll film include three adjustment modes in summer, specifically including:

[0047] like Figure 2 The figure a shows the summer daytime sunny mode, in which the outer film is fully unfolded and the inner film is partially unfolded according to the preset ratio for sunshade and heat insulation. Specifically, the preset ratio is preferably not to affect the indoor lighting effect. This mode takes into account the effects of sunshade, heat insulation and lighting. When the outer film is fully unfolded, the overall heat transfer coefficient K can be increased from 2.00W / (m 2 K) is reduced to 1.25W / (m 2·K), the solar heat gain coefficient SHGC is reduced from 0.45 to 0.21; if the inner film is further unfolded on this basis, the overall heat transfer coefficient can be increased from 1.25W / (m 2 K) is reduced to 1.00W / (m 2 ·K), SHGC is reduced from 0.21 to 0.05, thereby reducing indoor cooling energy consumption.

[0048] like Figure 2 The b in the figure shows the cloudy day mode in summer, in which the outer and inner roll films are all rolled up to ensure daylighting; specifically, this mode can ensure the indoor natural lighting effect to the greatest extent, with the overall visible light transmittance being the largest, up to 80%, thereby reducing the room lighting energy consumption.

[0049] like Figure 2 The figure c shows the summer night mode, in which the outer and inner membranes are fully unfolded to provide heat insulation and block the view. Specifically, the overall heat transfer coefficient for this mode is 1.00 W / (m 2 ·K), the visible light transmittance is 0, which can maximize heat insulation and protect indoor privacy.

[0050] The outer layer roll film and the inner layer roll film include three adjustment modes in winter, specifically including:

[0051] like Figure 3 d in the figure shows the sunny day mode in winter, in which the outer and inner roll films are all rolled up for lighting and heating. Specifically, the overall solar heat gain coefficient SHGC corresponding to this mode is 0.8, which can introduce solar radiation heat to the greatest extent, improve the passive heating and natural lighting effects of the room, and reduce the heating and lighting energy consumption of the room.

[0052] like Figure 3 The figure e in the figure shows the cloudy daytime mode in winter, where the outer membrane is fully unfolded and the inner membrane is partially unfolded according to a preset ratio for heat preservation and lighting. Specifically, when the outer membrane is fully unfolded, the overall heat transfer coefficient can be increased from 2.00 W / (m 2 K) is reduced to 1.25W / (m 2 ·K); if the inner film is further unfolded, the overall heat transfer coefficient can be increased from 1.25W / (m 2 K) is reduced to 1.00W / (m 2 ·K), which can keep warm and provide lighting, thus reducing the energy consumption of room heating.

[0053] like Figure 3 The figure f shows the winter night mode, in which the outer and inner membranes are fully unfolded to keep warm and block the view. Specifically, the overall heat transfer coefficient corresponding to this mode is 1.00W / (m 2·K), the visible light transmittance is 0, which maximizes the thermal insulation effect and protects indoor privacy.

[0054] Specifically, the utility model can have 6 different adjustment modes according to different seasons and time periods to ensure the insulation, heat insulation and privacy requirements of doors, windows and curtain walls under different meteorological conditions.

[0055] The above-mentioned specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. A thermal insulation and privacy performance adjustment device for doors, windows and curtain walls, installed on the inner side of the glass system, characterized in that: It comprises an outer film roll and an inner film roll, the outer film roll and the inner film roll are distributed from near to far from the glass system, the upper end of each film roll is wound around the corresponding rotating shaft, and the lower end is connected to the corresponding heavy bottom beam, the left and right ends of each film roll are slidably connected in the corresponding film roll guide rail, the inner layer of the film roll guide rail is provided with a sealing wool strip, and a driving device is installed in both of the rotating shafts; the film layer of the outer film roll is a transparent low-radiation sunshade film, and the film layer of the inner film roll is a non-transparent inorganic thermal insulation film; When the outer film roll is lowered, the outer film roll forms a first closed cavity with the glass system through the first bottom plate, one end of the first bottom plate is fixedly connected to the lower end of the outer film roll, and the other end is slidably connected to the glass system; When the inner film roll is lowered, the inner film roll forms a second closed cavity with the outer film roll through the second bottom plate, one end of the second bottom plate is fixedly connected to the lower end of the inner film roll, and the other end is slidably connected to the outer film roll.

2. A thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The transparent low-radiation sunshade film is a composite film with a visible light transmittance of 60-70%, an infrared blocking rate of up to 90%, an ultraviolet blocking rate of up to 90%, and an emissivity of less than 0.3 in the far-infrared band of 2.5-25μm. The composite film uses a 50μm thick PET film as a base film, and three reflective layers are compounded on the base film by sputtering or evaporation, which are a silver layer, an aluminum layer and a titanium layer from the inside to the outside.

3. A thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The material of the non-transparent inorganic thermal insulation film is aluminum-plated composite woven fabric or aluminum-plated silicone blanket or aluminum-plated fiber blanket. The visible light transmittance of the non-transparent inorganic thermal insulation film is 0, and it has thermal insulation and fireproof properties, a thermal conductivity coefficient is less than or equal to 0.3W / (m·K), and a fire resistance integrity is greater than 30min.

4. A thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The thickness of the first closed cavity and the second closed cavity is 20 mm to 22 mm.

5. The thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The first bottom plate and the second bottom plate are both provided with sealing wool strips.

6. The thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The first bottom plate and the second bottom plate are transparent or translucent plastic plates.

7. The thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The driving device is a driving motor, and the driving motor is used to drive the corresponding rotating shaft to rotate.

8. The thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to claim 1, characterized in that: The outer sides of the two rotating shafts are both wrapped with a cover shell.

9. A thermal insulation and privacy performance adjustment device for doors, windows and curtain walls according to any one of claims 1 to 8, characterized in that: The outer layer roll film and the inner layer roll film include three adjustment modes in summer, specifically including: summer daytime sunny mode, the outer layer roll film is fully unfolded, and the inner layer roll film is partially unfolded according to a preset ratio for sunshade and heat insulation; summer daytime cloudy mode, the outer layer roll film and the inner layer roll film are fully retracted to ensure lighting; summer night mode, the outer layer roll film and the inner layer roll film are fully unfolded for heat insulation and blocking sight.

10. A door, window, curtain wall thermal insulation and privacy performance adjustment device according to any one of claims 1 to 8, characterized in that: The outer layer roll film and the inner layer roll film include three adjustment modes in winter, specifically including: winter daytime sunny mode, the outer layer roll film and the inner layer roll film are all retracted for lighting and heating; winter daytime cloudy mode, the outer layer roll film is fully unfolded, and the inner layer roll film is partially unfolded according to a preset ratio for insulation and lighting; winter night mode, the outer layer roll film and the inner layer roll film are fully unfolded for insulation and blocking sight.

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