EP3749824B1 - A set with a roof window, electric and electronic elements and an exterior shading system - Google Patents
A set with a roof window, electric and electronic elements and an exterior shading system Download PDFInfo
- Publication number
- EP3749824B1 EP3749824B1 EP19712116.3A EP19712116A EP3749824B1 EP 3749824 B1 EP3749824 B1 EP 3749824B1 EP 19712116 A EP19712116 A EP 19712116A EP 3749824 B1 EP3749824 B1 EP 3749824B1
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- EP
- European Patent Office
- Prior art keywords
- exterior
- shading
- lamellae
- roof window
- unit
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- 238000009423 ventilation Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 241000446313 Lamella Species 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
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- 238000011156 evaluation Methods 0.000 description 1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/28—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable
- E06B9/30—Lamellar or like blinds, e.g. venetian blinds with horizontal lamellae, e.g. non-liftable liftable
- E06B9/32—Operating, guiding, or securing devices therefor
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/58—Guiding devices
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/56—Operating, guiding or securing devices or arrangements for roll-type closures; Spring drums; Tape drums; Counterweighting arrangements therefor
- E06B9/68—Operating devices or mechanisms, e.g. with electric drive
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/02—Special arrangements or measures in connection with doors or windows for providing ventilation, e.g. through double windows; Arrangement of ventilation roses
- E06B2007/023—Air flow induced by fan
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/247—Electrically powered illumination
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B2009/2476—Solar cells
Definitions
- Windows in the perimeter walls are, for analogous reasons, usually equipped with external shading devices, the most effective of which are adjustable horizontal louvers.
- external shading devices In the case of roof windows, the use of external shading devices is uncommon.
- available solutions of such shading devices preventing access of sun rays onto the glazing area result in a virtually closed air space created under the shading louvers or a roller blind system, which is further heated by heat conducted by the louvers or blinds exposed to solar energy.
- there is an increased air temperature in the cavity or gap in front of the exterior side of the glazing which leads to the transmission of heat through the glazing into the interior, albeit to a lesser extent than without the use of a shading system.
- the system additionally comprises at least one Peltier cell, at least one photovoltaic cell and at least one sensor of climatic variables, wherein the photovoltaic cells, Peltier cells and sensors of climatic variables are interconnected with a central unit including a power unit with an accumulator and an electronic control unit for storing and/or controlled use of the generated electricity.
- the lower part of the air gap is equipped with a bottom vent which is permanently open, and in the upper part with a vent which is closeable and is located in the upper part of the set of shading lamellae .
- the photovoltaic cells are located on the shading lamellae and/or on the non-moving parts of the exterior shading system.
- This illuminating fixture is advantageously mounted into the roof window lintel or lining or on their surfaces.
- the central unit can also be connected to a mains power supply.
- the frame 3 of the exterior shading system 1 is equipped with guiding elements 6 in which the set of lamellae 4 can move upwards or downwards and through which also pass the control elements for controlling the rotation of the individual lamellae, as illustrated in detail in Figure 3b .
- the position of guiding elements 6 is thereby chosen in such manner, that at all positions of set 5 of lamellae 4 , where this set 5 of lamellae 4 at least partially shades the roof window 2 , an air gap 7 exists between the set 5 of lamellae 4 and the glazing unit 2.1 of roof window 2 .
- At least narrow, but advantageously wider air gap 7 between the ends of the lamellae and the glazing unit 2.1 is maintained at all rotations of the positionable lamellae 4 relative to the glazing unit 2.1 plane, as illustrated in detail in Figure 3a where the lamellae 4 are rotated to a horizontal position.
- the air gap 7 in this case, extends from the glazing unit 2.1 plane to the ends of lamellae 4 , closest to the glazing unit 2.1 , and fills the space above the glazing unit 2.1 so that the space can be effectively vented, the air gap 7 being for this purpose provided with at least two vents 8.1 , 8.2 communicating with the exterior. Ventilation can take place either on the basis of natural air flow or is supported and controlled by added electrical elements.
- the upper vent 8.2 may have, for example, the appearance of a lamella which opens or closes according to the data from sensors 22.1, 22.2 of climatic variables.
- the advantage of the ability to close the upper vent 8.2 rests, in addition to the protection from rainfall and snowfall, for example, in that if during night time in the winter period the set 5 of lamellae 4 is lowered, the air in the air gap 7 moves less, thereby contributing to the reduction of heat transfer through the window.
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Photovoltaic Devices (AREA)
- Power-Operated Mechanisms For Wings (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Description
- The invention relates to a controlled movement of air under roof window shading elements to reduce thermal load in an interior of a building, in particular by an advantageous use of solar energy.
- When exposed to sunlight outside the heating season, roof windows facing the sunlit side typically introduce such amount of heat into the interior of the building that, in addition to optical discomfort due to direct sunlight penetration, the air temperature in the interior of the building may be increased to such an extent, that hygienic conditions are exceeded, unless intensive ventilation and/or cooling is provided. Under-the-roof rooms are usually made up of structures with lower thermal inertia than other parts of the building, so they are more prone to such overheating.
- Windows in the perimeter walls are, for analogous reasons, usually equipped with external shading devices, the most effective of which are adjustable horizontal louvers. In the case of roof windows, the use of external shading devices is uncommon. However, available solutions of such shading devices preventing access of sun rays onto the glazing area result in a virtually closed air space created under the shading louvers or a roller blind system, which is further heated by heat conducted by the louvers or blinds exposed to solar energy. As a result, there is an increased air temperature in the cavity or gap in front of the exterior side of the glazing, which leads to the transmission of heat through the glazing into the interior, albeit to a lesser extent than without the use of a shading system.
- Roof windows used in residential buildings may be partially or completely shaded for a considerable part of the time when exposed to sun rays, because the rooms (typically bedrooms) are not used during the day or a part of it.
- Shading elements located within the glazing unit or on the interior side of the glazing affect only the visual comfort in the room and have almost no effect on reducing the penetration of undesired solar thermal gains into the room. Undesired heat gains in the room often result in the need for air-conditioning, which increases energy demand, operating costs and environmental load.
- Limiting of passive solar gains of the window is to a certain extent possible by a selection of proper glazing. Such a measure usually leads to a reduction of no more than 70% of the gain, otherwise the daylight illumination of the room would be excessively impaired. Concurrently a situation would arise where it would not be possible to use passive solar gains at a time when it is beneficial for the energy balance of the room.
- The use of shading lamellae of horizontal exterior louvers and horizontal awnings in front of windows for the placement of photovoltaic cells is known. In terms of electricity production, however, this is not an effective source compared to photovoltaic systems on larger, more compact surfaces. The description of such solutions is the subject of the application
CN106639183 Dynamic sun-shading device integrated with PV (Photovoltaic) panels, further of the utility modelCN204960172 (U ) - Building integrated photovoltaic's outer solar shading system of tripe, and of the utility modelCN204877211 (U ) Intelligence sun-shading louver system. DocumentCN 104879051 A discloses a temperature control energy saving window with an integrated photovoltaic shutter with PV-cells, guiding elements for the shutter, an air gap between the shutter and a glazing unit of the window, two vents communicating with the exterior to ventilate the air gap, Peltier cells and sensors, and a central unit including a power-supply unit with an accumulator. None of these documents deals with the controlled ventilation of the air cavity or gap between the external shading systems and exterior surfaces of roof windows. - The above-mentioned drawbacks are eliminated by the solution of the present invention as defined in claim 1 which proposes installing an exterior shading system on the roof window exterior side, which significantly increases air flow movement in the air gap between the shading louvre assembly and the exterior side of the roof window glazing unit by means of electrical elements, thus decreasing the expected temperature on the glazing unit surface. The movement of air in the continuous air gap is ensured by a suitable geometric arrangement and can be significantly enhanced in a controlled manner by means of electric fans. To power them, it is particularly advantageous to use the solar energy incident on the shading system elements, and because part of the incident solar energy is converted to electric energy by means of the photovoltaic cells placed thereon, and thus further reduces the thermal load into the air cavity by approximately 10%, and additionally, there is a high degree of time correlation between the photovoltaic electricity generation and its use for the operation of electric fans. An additional element supporting the air movement and air temperature reduction are Peltier cells powered by electric energy from the photovoltaic cells. The proposed solution can thus operate with a considerable degree of autonomy and/or be advantageously multi-level controlled by an electronic control system responding to information from installed sensors, to user requirements and to evaluation by an superordinate intelligent control system.
- The exterior roof window shading system of the present invention as defined in claim 1 comprises an exterior shading system frame which is located in the exterior on the exterior side of the roof window. The dimensions and position of the frame are such that when viewed from the outside in a direction perpendicular to the plane of the roof window glazing unit, the outer contour of the frame, where the frame is present, overlaps beyond the outer contour of the roof window casement. The system further includes a set of shading lamellae. The frame of the exterior shading system carries guiding elements for defining the position of the lamellae and for their movement, these guiding elements being positioned in such manner, that at all positions of the set of lamellae, in which the set of the lamellae at least partly shades the roof window, there is an air gap between the set of the lamellae and the roof window glazing unit. The air gap has at least two vents communicating with the exterior for venting. The system additionally comprises at least one Peltier cell, at least one photovoltaic cell and at least one sensor of climatic variables, wherein the photovoltaic cells, Peltier cells and sensors of climatic variables are interconnected with a central unit including a power unit with an accumulator and an electronic control unit for storing and/or controlled use of the generated electricity.
- The Peltier cells are advantageously mounted on the frame of the exterior shading system and/or on the shading lamellae and/or on the lower part of the non-movable window frame and/or on the external side of the glazing unit at the lower edge of the roof window.
- It is advantageous, if an additional space filled with air is created in the area adjacent to the air gap, which communicates with this air gap. Then in this additional space, at least one fan is located which is connected to the central unit for its control and power supply. It is advantageous if at least one first sensor of climatic variables is located in the air gap, this sensor being a temperature sensor, and/or if at least one second sensor of climatic variables is located in the exterior, this sensor being a sensor for combined measurement of several climatic variables.
- With an advantage, the system comprises a first drive unit for driving the set of shading lamellae which is connected to the central unit for its control and drive supply.
- It is advantageous, if the lower part of the air gap is equipped with a bottom vent which is permanently open, and in the upper part with a vent which is closeable and is located in the upper part of the set of shading lamellae .
- In an advantageous embodiment, the system additionally includes a box for housing the set of shading lamellae in a retracted or partially retracted state, attached to the upper part of the exterior shading system frame. Between the box interior and the air gap there is an air connection. The box additionally contains a central unit including a power unit with an accumulator, an electronic control unit and a first drive unit for driving the shading lamellae assembly. In the walls of the box, there is at least one additional vent communicating with the exterior for improved air gap ventilation.
- It is advantageous, if the shading lamellae are positionable.
- In advantageous embodiments, the photovoltaic cells are located on the shading lamellae and/or on the non-moving parts of the exterior shading system.
- It is also possible to connect an illuminating fixture to the central unit, to illuminate the room in the interior behind the roof window.
- This illuminating fixture is advantageously mounted into the roof window lintel or lining or on their surfaces.
- It is advantageous, if the central unit is interconnected with the superordinate control unit for operation and security of the house.
- In one possible embodiment, the exterior shading system is also equipped with a second drive unit for opening the roof window casement, this second drive unit being connected to the central unit.
- The central unit can also be connected to a mains power supply.
- The entire exterior shading system can be intelligently controlled by an electronic control unit so that it evaluates different operational and climate situations in cooperation with the superordinate building operation control systems.
- The figures illustrate some advantageous embodiments of the exterior shading system including significant details.
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Figure 1 illustrates a vertical sectional view of a thermally insulated sloping roof with a roof window and a fitted exterior shading system. The arrows indicate the controlled air flow in the air gap. Symbol "ext." indicates the exterior of the building, symbol "int." the building interior. -
Figure 1a illustrates a detail of a vertical section through a roof window, the sectional view being directed along the same plane as inFigure 1 . -
Figure 2a illustrates a schematic view from the exterior, from a direction perpendicular to the glazing unit plane, of the exterior shading system with partially extended shading lamellae, indicating the plane of cross-section A-A shown inFigure 3b . -
Figure 2b illustrates a schematic view from the exterior from a direction perpendicular to the glazing unit plane of the exterior shading element with the shading lamellae pulled up and the upper box uncovered. The arrows indicate the controlled airflow in the air gap between the roof window glazing unit and the set of shading lamellae and also in the other air cavities in the system. -
Figure 3a illustrates in a vertical cross-section of a sloping roof a set of shading lamellae that are positioned horizontally so that enough daylight can be brought into the room and at the same time allowing the photovoltaic cells on the lamellae to produce electric energy. Concurrently,Figure 3a illustrates the air gap between the roof window glazing unit and the shading lamellae system. -
Figure 3b illustrates in cross-section A-A from a direction perpendicular to the glazing unit 2.1 plane, according to marking inFigure 2a , a detail of the shading lamella edge inserted into the guiding element for defining the position of the lamellae and for their movement. -
Figure 4 illustrates a schematic diagram of the power and data interconnection of the elements of the entire system. - In the following text, only some advantageous embodiments of the invention are described. However, there are many other embodiments falling within the scope of the present invention as defined by the appended claims and differ from the embodiments described below, for example, in the geometry of the arrangement, different number of elements used, etc. It is also possible to combine the advantageous embodiments described below with each other.
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Figure 1 illustrates a schematic vertical cross-sectional view of an exterior shading system 1 in one possible embodiment. The exterior shading system 1 comprises asupport frame 3 of the exterior shading system 1. This frame is placed in the exterior on the exterior side of aroof window 2, so that, when viewed from the exterior in a direction perpendicular to the plane of a glazing unit 2.1 of theroof window 2, the outer contour of theframe 3 of the exterior shading system 1 overlaps the outer contour of a roof window casement frame 2.2, wherever theframe 3 is present. As illustrated inFigures 2a, 2b , theframe 3 of the exterior shading system 1 needs not to be necessarily closed, especially if some of its parts are connected with other parts, for example abox 16 shown, inter alia, inFigures 2a, 2b . However, theframe 3 of the exterior shading system is always mounted so as not to interfere with the opening of the casement ofroof window 2, this casement being formed by a roof window casement frame 2.2 and a roof window glazing unit 2.1, as shown in detail inFigure 1a . - The exterior shading system 1 further includes a
set 5 of shading lamellae 4, wherein these lamellae are movable so that they may move in different directions relative to the plane of the roof window glazing unit 2.1, and concurrently it is possible to pull down or pull up the entire set of shading lamellae so as to cover the desired portion of the roof windows glazing unit 2.1 or to keep the window completely unshaded. In order to define the position of lamellae 4, namely their rotation, and for their movement, namely for pulling up and pulling down theset 5 of lamellae 4, theframe 3 of the exterior shading system 1 is equipped with guidingelements 6 in which the set of lamellae 4 can move upwards or downwards and through which also pass the control elements for controlling the rotation of the individual lamellae, as illustrated in detail inFigure 3b . The position of guidingelements 6 is thereby chosen in such manner, that at all positions ofset 5 of lamellae 4, where this set 5 of lamellae 4 at least partially shades theroof window 2, anair gap 7 exists between theset 5 of lamellae 4 and the glazing unit 2.1 ofroof window 2. At least narrow, but advantageouslywider air gap 7 between the ends of the lamellae and the glazing unit 2.1is maintained at all rotations of the positionable lamellae 4 relative to the glazing unit 2.1plane, as illustrated in detail inFigure 3a where the lamellae 4 are rotated to a horizontal position. Theair gap 7, in this case, extends from the glazing unit 2.1 plane to the ends of lamellae 4, closest to the glazing unit 2.1, and fills the space above the glazing unit 2.1 so that the space can be effectively vented, theair gap 7 being for this purpose provided with at least two vents 8.1, 8.2 communicating with the exterior. Ventilation can take place either on the basis of natural air flow or is supported and controlled by added electrical elements. It is advantageous, if the lower vent 8.1 in the lower part ofair gap 7 is continuous and is permanently open and when the upper vent 8.2 in the upper part of theair gap 7 is closeable. The upper vent 8.2 may have, for example, the appearance of a lamella which opens or closes according to the data from sensors 22.1, 22.2 of climatic variables. The advantage of the ability to close the upper vent 8.2 rests, in addition to the protection from rainfall and snowfall, for example, in that if during night time in the winter period theset 5 of lamellae 4 is lowered, the air in theair gap 7 moves less, thereby contributing to the reduction of heat transfer through the window. - In
Figure 1 the arrows illustrate the air flow in thecavity 7 and in the space above this cavity. Also shown is anadditional fan 20, which can be placed in abox 16. Thebox 16 is an optional part of the device and will be described below. - The system is furthermore equipped with at least one
Peltier cell 10, advantageously withseveral Peltier cells 10, which can cool or heat the air in theair gap 7, thereby contributing to thermal comfort in the room behind theroof window 2 as well as to energy savings in air conditioning and heating. ThePeltier cells 10 are in advantageous embodiments located, for example, on at least some of the shading lamellae 4 and electrically connected so that they are turned in the summer by the cooling side towards theair gap 7. In winter, their polarity can be reversed so that the side facing theair gap 7 generates heat. They can also be located on the bottom of the fixed window frame or at the bottom of the window casement frame 2.2 or on the exterior side of the glazing unit 2.1 at the lower edge of theroof window 2. Another possibility is to place thePeltier cells 10 on theframe 3 of the exterior shading system 1. All these positions can be combined with each other. - To control the system based on current climate conditions, it is important to have at least one sensor of climatic variables installed.
Figure 1 illustrates the first sensor 22.1 of climatic variables which serves to measure temperature inair gap 7. However, the system can be supplemented by other sensors of climatic variables, for example a second sensor 22.2 for combined measurements, e.g. air temperature and humidity measurement, solar radiation intensity and precipitation. This second sensor 22.2 is located in the exterior, e.g. on the roofing, and is not shown in the figures. The number of sensors of climatic variables may also be greater. - Priority powering of the system electrical elements is provided by the
photovoltaic cells 9 which are also part of the exterior shading system 1, wherein thephotovoltaic cell 9 must be at least one, but it is advantageous to utilize a greater number. Thephotovoltaic cells 9 are preferably positioned on the shading lamellae 4 and/or on the stationary parts of the exterior shading system 1, for example on thebox 16 cover facing the sun. - The
photovoltaic cells 9,Peltier cells 10 and sensors 22.1, 22.2 of climatic variables are connected to thecentral unit 11 which includes apower supply unit 12 with an accumulator and anelectronic control unit 13 which controls the storage and/or use of electric energy produced byphotovoltaic cells 9. This controlled power utilization includes the powering ofPeltier cells 10, but also other electrical devices that the exterior shading system may include, and which will be described below. The power supply may be direct power or power supply by energy stored in the accumulator in thepower supply unit 12. - In the summer mode, for an even better air flow through the
air gap 7, it is advantageous when in the area adjacent to theair gap 7, an additional space filled with air is created, communicating withair gap 7. In this additional space, at least onefan 14 is advantageously located, which increases air flow in theair gap 7 but at the same time does not prevent the view from the window. Thefan 14 orfans 14 are connected to thecentral unit 11 for control and power supply. Energy produced by thephotovoltaic cells 9 is advantageously used to drive thefan 14 orfans 14. Thefan 14 can be mounted, for example, as shown inFigure 1 , i.e. above the roof window in the direction of the roof plane, typically between the roof covering and thebox 16,box 16 being mounted on the top of theframe 3 of the exterior shading system 1 or inserted into thisframe 3. Alternatively,box 16 is not present andframe 3 of the exterior shading system 1 is extended upward beyond the level of the fixed frame of theroof window 2. In this case, it is advantageous to place thefan 14 below this extended part of theframe 3 of the exterior shading system 1. However, other position offan 14 orfans 14 are possible, it is sufficient, if these positions enable an air flow betweengap 7, and concurrently iffans 14 do not obstruct the view from theroof window 2. - The exterior shading system 1 in an advantageous embodiment comprises also a
first drive unit 15 for pulling down, pulling up and rotating theset 5 of shading lamellae 4, which is connected to thecentral unit 11 for power supply and control, with the energy produced byphotovoltaic cells 9 being advantageously used. - It is advantageous if the system also includes the
box 16 for housing theset 5 of shading lamellae 4 in pulled up or partially pulled up state. This box is typically attached to the upper part of theframe 3 of the exterior shading system 1. However, it may also be set into,e.g. frame 3 of the exterior shading system 1 or attached separately without being connected to frame 3 of the exterior shading system 1. Between the interior ofbox 16 and theair gap 7, an air flow connection is provided as indicated by the dashed line inFigure 1 . In this dashed area,box 16 may be perforated, partially perforated or completely open. The walls of thisbox 16 contain at least oneadditional vent 17 communicating with the exterior to enhance the ventilation of theair gap 7, in particular in the case when the box is 16 contains oneadditional fan 20. The additional vent or vents 17 may also be advantageously positioned also to assist better ventilation of theair gap 7 by means offan 14 orfans 14.Vents 17 are advantageously equipped with louvres preventing rain ingress. In one advantageous embodiment, they are positioned on the sides ofbox 16. - Furthermore, it is advantageous to place the
central unit 11 in thebox 16, including thepower supply unit 12 with an accumulator,electronic control unit 13 and thefirst drive unit 15 for driving theset 5 of shading lamellae 4. - It is advantageous, if an illuminating
fixture 18 is also connected to thecentral unit 11, to illuminate the room in the interior behind theroof window 2. To power this illuminatingfixture 18, the energy produced by thephotovoltaic cells 9, which are a part of the exterior shading system, is again advantageously used, which is another new feature compared to the current state of the art. In the advantageous embodiments, the illuminatingfixture 18 is mounted into the lintel or into the lining of theroof window 2 or on their surfaces. Such an arrangement is advantageous, for example, for positioning a work area in the interior because light - both natural and artificial - comes from the same direction. It is advantageous if the illuminatingfixture 18 includes LED elements. Such arrangement is also advantageous for transient combined lighting if the illuminating fixture includes a light source with a spectral composition corresponding to daylight. Thecentral unit 11 may be interconnected with thesuperordinate control unit 21 for operation and security of the house. - The exterior shading system 1 may also be equipped with a
second drive unit 19 for opening the window casement of theroof window 2 in order to ventilate the room behind theroof window 2, thissecond drive unit 19 being connected to thecentral unit 11 and advantageously using the energy produced by thephotovoltaic cells 9. - However, the
central unit 11 may also be connected to the mains power supply in case the power produced by thephotovoltaic cells 9 or stored in the accumulator is insufficient to power all connected devices. Mains power supply can also be used to charge the accumulator. - The connected electrical devices, such as the
Peltier cells 10,power supply unit 12 with an accumulator,fans 14,first drive unit 15, illuminatingfixture 18,second drive unit 19, andadditional fan 20, are controlled by commands issued by theelectronic control unit 13. - The
electronic control unit 13 obtains and evaluates information, for example, from the first sensor 22.1 of climatic variables measuring air temperature in theair gap 7, from the second sensor 22.2 of climatic variables for the combined measurement located on the roof outside the exterior shading system, or possibly also from the building user through a remote control element and/or thesuperordinate control unit 21 controlling the operation and security of the house. - The electric energy produced by the photovoltaic cells is fed into the
power unit 12 with an accumulator. Based on a command from theelectronic control unit 13, thepower supply unit 12 with an accumulator powersfans 14 and/or 20 and thePeltier cells 10. The electric energy accumulated in thepower supply unit 12 with an accumulator is further used to power the illuminatingfixture 18, most advantageously located on the lintel or lining of theroof window 2. The electric energy stored in thepower supply unit 12 with an accumulator is further used for thesecond drive unit 19 to open the window casement ofroof window 2, if such a command is issued by theelectronic control unit 13. - The entire exterior shading system can be intelligently controlled by the
electronic control unit 13 in such manner, that it evaluates different operational and climate situations in cooperation with superordinate building control systems. For example, in a situation when following a bright winter day comes a very cold night with a bright night sky, it may be advantageous to have the entire window shaded to provide energy savings and optical comfort. The following morning, a free view through the window will be provided after pulling up the shading element, as the window will not be covered by condensation and/or frost from the exterior side. The heat exchange between the night sky and the exterior surface of the building by radiation advantageously occurs on the exterior side of the shading elements. Theair gap 7 with minimal air movement when the upper vent 8.2 is closed and with switched offfans Peltier cells 10 can also be used to slightly increase the air temperature in theair gap 7. The core of thecentral unit 11 is anelectronic control unit 13 which processes the data information from sensors 22.1 and/or 22.2, from thesuperordinate control unit 21 for operation and security of the house, and from the user. The connection can be both wired and wireless, or a combination of these connections. Apower supply unit 12 with an accumulator is additionally placed in thecentral unit 11. This is power-connected to thephotovoltaic cells 9,Peltier cells 10,fans drive units fixture 18. - The exterior shading system of the present invention is applicable to any roof window type. It significantly reduces the risk of room overheating behind the roof windows because in contrast to interior or mid-pane shading systems, it concurrently significantly limits the solar energy access to the exterior surface of the roof window glazing unit by utilizing the
set 5 of shading lamellae 4 by converting part of the solar energy into electrical energy and securing increased air movement in theair gap 7. It utilizes the generated electric energy in particular for the movement and adjustment of theset 5 of shading lamellae 4, operation ofelectric fans 14 and/or 20, powering of thePeltier cells 10, illuminatingfixture 18,first drive unit 15 and thesecond drive unit 19. Such a system can operate to a large extent autonomously and/or on the basis of control algorithms, including cooperation with superordinate building management systems, for example with thesuperordinate control unit 21, and according to user instructions. -
- 1 -
- exterior shading system for shading a roof window
- 2 -
- roof window
- 2.1 -
- roof window glazing unit
- 2.2 -
- roof window casement frame
- 3 -
- exterior shading system frame
- 4 -
- lamellae (for shading)
- 5 -
- set of (shading) lamellae 4
- 6 -
- guiding elements (for defining the position of lamellae 4 and for their movement)
- 7 -
- air gap (between
set 5 of shading lamellae 4 and glazing unit 2.1 of roof window 2) - 8.1, 8.2 -
- vents (communicating with the exterior for venting air gap 7)
- 8.1 -
- bottom vent (permanently open in preferred embodiment)
- 8.2 -
- upper vent (closable in preferred embodiment)
- 9 -
- photovoltaic cells
- 10 -
- Peltier cells
- 11 -
- central unit
- 12 -
- power supply unit with an accumulator
- 13 -
- electronic control unit
- 14 -
- fans
- 15 -
- first drive unit (driving set 5 of shading lamellae 4)
- 16 -
- box (for positioning set 5 of shading lamellae 4 in extended or partially extended state)
- 17 -
- additional vent (communicating with the exterior, usually covered by rain louver)
- 18 -
- illuminating fixture
- 19 -
- second drive unit (driving opening of
roof window 2 casement) - 20 -
- additional fan
- 21 -
- superordinate control unit (for operation and house security system)
- 22.1 -
- first sensor of climatic variables (for temperature measurement)
- 22.2 -
- second sensor of climatic variables (for combined measurements, i.e. for measuring air temperature and humidity, solar radiation intensity and occurrence of precipitation)
Claims (13)
- A set for active control of solar gains and of heat transfer into rooms under pitched roofs, comprising a roof window (2), electric and electronic elements and an exterior shading system (1) for shading the roof window (2), wherein the exterior shading system (1) comprises a frame (3), located in the exterior on the outside of the roof window (2), a set (5) of shading lamellae (4) and at least one photovoltaic cell (9), wherein the dimensions and the positioning of the frame (3) of the exterior shading system (1) are such that when viewed from the exterior in the direction perpendicular to the plane of a glazing unit (2.1) of the roof window (2), the outer contour of the frame (3) wherever the frame (3) is present, overlaps the outer contour of the roof window (2) casement frame (2.2), the frame (3) of the exterior shading system (1) carrying guiding elements (6) for defining the position of the lamellae (4) and for their movement, wherein the guiding elements (6) are arranged in such manner that at all positions of the set (5) of lamellae (4), in which the set (5) of lamellae (4) at least partially shades the roof window (2), an air gap (7) between the set (5) of lamellae (4) and the glazing unit (2.1) of the roof window (2) is present, the air gap (7) being provided with at least two vents (8.1, 8.2) communicating with the exterior to ventilate this air gap (7), wherein the exterior shading system further comprises at least one Peltier cell (10) and at least one sensor (22.1, 22.2) of climatic variables, wherein the photovoltaic cells (9), Peltier cells (10) and the at least one sensor (22.1, 22.2) of climatic variables are interconnected with a central unit (11) including a power supply unit (12) with an accumulator and an electronic control unit (13) for the storage and/or controlled use of the generated electric energy.
- The set according to claim 1, characterized in that the Peltier cells (10) are mounted on the frame (3) of the exterior shading system (1) and/or on the shading lamellae (4) and/or on the lower part of the fixed window frame and/or on the lower part of the roof window (2) casement frame (2.2) and/or on the outside of the glazing unit (2.1) at the lower edge of the roof window (2).
- The set according to claims 1 or 2, characterized in that in the area adjacent to the air gap (7), an additional space is provided filled with air which communicates with the air gap (7), and in this additional space at least one fan (14) is installed, interconnected to the central unit (11) for its control and power supply.
- The set according to any of claims 1 to 3, characterized in that at least one first sensor (22.1) of climatic variables is located in the air gap (7), this sensor being a sensor for measuring the temperature, and/or that in the exterior, at least one second sensor (22.2) of climatic variables is located, this sensor being a sensor for combined measurement of multiple climatic variables.
- The set according to any of claims 1 to 4, characterized in that it additionally comprises a first drive unit (15) for driving the set (5) of shading lamellae (4), which is connected to the central unit (11) for its control and power supply.
- The set according to any of claims 1 to 5, characterized in that the at least two vents (8.1, 8.2) comprise a bottom vent (8.1) which is permanently open and an upper vent (8.2) in the upper part which is closeable.
- The set according to any of claims 1 to 6, characterized in that it additionally includes a box (16) for the placement of the set (5) of shading lamellae (4) in a retracted or partially retracted position, wherein the box (16) is attached to the upper part of frame (3) of the exterior shading system (1), with an air connection being formed between the interior of the box (16) and the air gap (7), wherein this box (16) additionally contains the central unit (11) comprising the power supply unit (12) with the accumulator, electronic control unit (13) and the first drive unit (15) for driving the set (5) of shading lamellae (4), and wherein at least one additional vent (17) communicating with the exterior for ventilation of the air gap (7) is present in the walls of the box (16).
- The set according to any of claims 1 to 7, characterized in that the photovoltaic cells (9) are located on the shading lamellae (4) and/or on the non-moving parts of the exterior shading system (1).
- The set according to any of claims 1 to 8, characterized in that an illuminating fixture (18) is connected to the central unit (11) to illuminate the room in the interior behind the roof window (2).
- The set according to claim 9, characterized in that the illuminating fixture (18) is mounted into the lintel or into the lining of the roof window (2) or on their surfaces.
- The set according to any of claims 1 to 10, characterized in that the central unit (11) is connected to a superordinate control unit (21) for operation and security of the house.
- The set according to any of claims 1 to 11, characterized in that it is equipped with a second drive unit (19) for driving the opening of the roof window (2) casement, the second drive unit (19) being connected to the central unit (11).
- The set according to any of claims 1 to 12, characterized in that the central unit (11) is connected to a mains power supply.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL19712116T PL3749824T3 (en) | 2018-02-19 | 2019-02-16 | A set with a roof window, electric and electronic elements and an exterior shading system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CZ2018-82A CZ201882A3 (en) | 2018-02-19 | 2018-02-19 | Exterior shading system with integrated roof functions |
PCT/CZ2019/050004 WO2019158136A1 (en) | 2018-02-19 | 2019-02-16 | Exterior shading system with integrated functions for roof windows |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3749824A1 EP3749824A1 (en) | 2020-12-16 |
EP3749824B1 true EP3749824B1 (en) | 2021-09-01 |
Family
ID=67620166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19712116.3A Active EP3749824B1 (en) | 2018-02-19 | 2019-02-16 | A set with a roof window, electric and electronic elements and an exterior shading system |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3749824B1 (en) |
CZ (1) | CZ201882A3 (en) |
PL (1) | PL3749824T3 (en) |
WO (1) | WO2019158136A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4279700A1 (en) * | 2022-05-21 | 2023-11-22 | Guillermo Alfonso López Fuentes | Roller shutter with slats having photovoltaic panels |
ES1295616Y (en) * | 2022-08-19 | 2023-02-17 | Gomez Raul Perez | improved shutter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2346905A1 (en) * | 1973-09-18 | 1975-04-10 | Sylvester Guss | Laminated blind for infra red radiation protection - has blind between two window panes supported by frame |
CZ305821B6 (en) * | 2008-03-28 | 2016-03-30 | Isotra A.S. | Device to actuate and control activity of darkening system driving mechanism |
DE202013105438U1 (en) * | 2013-11-29 | 2015-03-03 | JOMA Dämmstoffwerk GmbH | receiving element |
KR101643324B1 (en) * | 2014-10-17 | 2016-07-27 | 주식회사 비엔엘 | Electrically-Powered Blind Apparatus with Solar Power |
CN104879051B (en) * | 2015-06-23 | 2017-01-18 | 湖南大学 | Photovoltaic shutter semiconductor temperature-control energy-saving window |
CN204877211U (en) * | 2015-08-17 | 2015-12-16 | 深圳市洪涛装饰股份有限公司 | Intelligence sun -shading louver system |
CN204960172U (en) * | 2015-09-22 | 2016-01-13 | 大连理工大学 | Building integrated photovoltaic's outer solar shading system of tripe |
CN106639183A (en) * | 2017-02-28 | 2017-05-10 | 华南理工大学 | Dynamic sun-shading device integrated with PV (Photovoltaic) panels |
-
2018
- 2018-02-19 CZ CZ2018-82A patent/CZ201882A3/en unknown
-
2019
- 2019-02-16 WO PCT/CZ2019/050004 patent/WO2019158136A1/en unknown
- 2019-02-16 PL PL19712116T patent/PL3749824T3/en unknown
- 2019-02-16 EP EP19712116.3A patent/EP3749824B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP3749824A1 (en) | 2020-12-16 |
CZ307975B6 (en) | 2019-09-25 |
WO2019158136A1 (en) | 2019-08-22 |
PL3749824T3 (en) | 2021-12-20 |
CZ201882A3 (en) | 2019-09-25 |
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