Window or window door

Abstract

A window (2) or French door with a ventilation device (3) has a ventilation duct (14) for fresh air, which is guided through a gap (13) between the sash (12) and the frame (9). Furthermore, the window (2) has a ventilation duct (15) for exhaust air, which is guided in a recess (10) of the frame (9). At least one heat exchanger (29) between the two ventilation ducts (14, 15) allows the heat from the exhaust air to be used to warm the fresh air.

Description

[0001] The invention relates to a window or a French door with a sash movable against a frame having a frame, wherein the sash is movable between a gap ventilation position, in which the sash is a gap away from a frame, and a closed position, in which the sash lies in the frame, and is equipped with a locking device for locking the position of the sash with the frame, with a ventilation device, with a ventilation duct for fresh air and a ventilation duct for exhaust air and with a heat exchanger for exchanging heat between the exhaust air and the fresh air.

[0002] A window with an exhaust air duct and a fresh air duct is known, for example, from DE 83 37 249 U1. The exhaust air duct and the fresh air duct share a common wall made of a highly thermally conductive material. Inlet and outlet openings are located in the frame and a sash frame. The frame and sash frame are designed as hollow chambers. A disadvantage of this window is that the ducts are very long and, due to their design, have a small cross-section. This necessitates high airflow velocities, which leads to high energy consumption and disruptive noise.

[0003] Furthermore, DE 39 42 017 A1 discloses a ventilation system with a ventilation unit arranged in the parapet area below a window, which has separate sections for exhaust air and fresh air supply. An exhaust air inlet extends essentially across the entire width of the window. However, sufficient ventilation results in large dimensions for the ventilation system in the parapet area, yet it still exhibits high flow velocities.

[0004] From EP 1 580 374 A2, a window is known in which a sash can be locked in the frame in both the trickle ventilation position and the closed position. A room enclosed by the window can be ventilated via this trickle ventilation position. The gap created between the sash and frame in the trickle ventilation position can have a large cross-section, thus enabling good ventilation. However, the use of waste heat is not possible with an open gap. Furthermore, AT 512 198 A1 discloses a window with a movable sash, which describes a ventilation device for supplying and extracting air, including a heat exchanger.

[0005] The invention is based on the problem of designing a window or French door of the type mentioned above in such a way that it enables the use of waste heat from a room separated by the window or French door and avoids high flow velocities.

[0006] This problem is solved according to the invention by the fact that the ventilation channels are at least partially guided through the gap formed between the sash and the frame in the gap ventilation position and that a sealing element is provided to release one of the ventilation channels in the gap ventilation position and to close the ventilation channel in the closed position.

[0007] This design utilizes the gap created between the sash and frame in the trickle vent position for room ventilation. Because this gap can have a large cross-section, airflow velocities are minimized. Furthermore, this design allows for a particularly compact window or French door. The large cross-section of the gap also provides a large contact area for the heat exchanger, ensuring efficient heat recovery.

[0008] According to another advantageous embodiment of the invention, the heat exchanger can have particularly large dimensions if it is arranged in a frame surrounding the frame. This enables high heat recovery by the heat exchanger. Such a frame can be masonry surrounding the frame or a jamb that receives the frame.

[0009] According to another advantageous embodiment of the invention, the ventilation channels can be arranged in the window or French door in a particularly space-saving manner if the sealing element is arranged between the frame and the sash and if one ventilation channel is guided past the sash and the sealing element on the frame in the gap ventilation position of the sash.

[0010] According to another advantageous embodiment of the invention, the sealing element is particularly simple in design if it has a base and an elastic skirt projecting from the base. The skirt enables control of the opening of one ventilation duct.

[0011] According to another advantageous embodiment of the invention, a complex control mechanism for the movement of the sealing element can be avoided if the base is fixed in one of the components of the sash or frame and the elastic skirt is pre-tensioned against the opposing component of the frame or sash. With this design, the control of one ventilation channel is achieved through the elasticity of the sealing element and the movement of the sash. When the window is fully opened, for example by moving the sash into a known tilt-and-turn position, the skirt moves away from the component against which it is pre-tensioned. This prevents the sealing element from obstructing the use of the window.

[0012] A particularly large cross-section of the ventilation duct controlled by the sealing element can be generated according to another advantageous embodiment of the invention if the sealing element is designed to be circumferential around the wing.

[0013] According to another advantageous embodiment of the invention, the sealing element provides a reliable seal when the elastic skirt has a thickening at its free end. Preferably, the thickening is clamped between the frame and the sash in the closed position, so that the window or French door is particularly reliably sealed in the closed position.

[0014] The heat exchanger could, for example, be designed in the manner of a recuperator. However, according to another advantageous embodiment of the invention, the heat exchanger is particularly cost-effective and can be modularly adapted to any size of the wing and frame if the heat exchanger is a plate heat exchanger in which the flows of the two ventilation channels are separated by heat-conducting plates.

[0015] According to another advantageous embodiment of the invention, the pollution of an interior space by fine dust from the outside air can be easily avoided if an air filter is arranged in the ventilation duct for fresh air. This air filter is to be installed in the ventilation duct leading into the interior space.

[0016] According to another advantageous embodiment of the invention, fresh air can be supplied to an interior space particularly quickly if a fan is arranged in at least one of the ventilation ducts. Preferably, fans are arranged in both of the ventilation ducts, so that the exchanged air is passed over the heat exchanger and thus the heat exchange is optimized.

[0017] According to another advantageous embodiment of the invention, a window or French door can contribute to room heating if a heater is installed in the ventilation duct for fresh air. The heater is installed in the ventilation duct leading into the interior. This design combines ventilation and heating of a room containing the window or French door, resulting in exceptional comfort. Furthermore, thanks to the invention, the heater can be designed with a very large surface area surrounding the sash, allowing for particularly low temperatures on the heating surfaces. This contributes to energy savings in room heating.

[0018] A particularly efficient heating or cooling of the fresh air can be achieved according to another advantageous embodiment of the invention if the heating system is designed as a heat pump, if each of the ventilation ducts has a heat exchanger, and if the heat exchangers are part of the heat pump configured as a heating system. With appropriate circuitry, the heat pump can also be used as an air conditioner and, if required, can also cool the fresh air.

[0019] A particularly comfortable ventilation of a room can be easily achieved according to another advantageous embodiment of the invention if an actuator is provided for moving the sash between the closed position and the ventilation position. The actuator can be arranged on the sash or, preferably, on the frame. Preferably, the actuator or a further actuator controls a fitting for locking and unlocking the sash in the frame.

[0020] According to another advantageous embodiment of the invention, controlling the ventilation of the space enclosed by the window or French door can be easily achieved if a control unit is connected to at least one of the components of the actuator, the at least one fan, and the heating element. A control panel for the control unit can be located directly next to the window or French door or connected to a smartphone. Furthermore, such a control system can be integrated with a smart home system and controlled using additional data, such as weather data or an alarm system.

[0021] According to another advantageous embodiment of the invention, a circulation of exhaust air and fresh air between the ventilation ducts can be avoided if the air inlets of the ventilation ducts are located further away from the sash than the air outlets. This design distributes the exhaust air as far away from the sash as possible, thus preventing undesirable direct intake of the exhaust air. Furthermore, the supplied fresh air enters the room close to the sash, preventing mold growth.

[0022] According to another advantageous embodiment of the invention, further reducing the risk of mold growth is achieved by arranging the fresh air outlet of the ventilation duct in a window reveal. This allows the fresh air outlet to be located within the frame of the window. Since mold often forms at this location, this arrangement of the air outlet ensures particularly good ventilation of this area.

[0023] The invention allows for numerous embodiments. To further illustrate its basic principle, several of these are shown in the drawing and described below. This shows in Fig. 1 a view of a house wall with several windows, Fig. 2 a window made of Figure 1 In an enlarged view, Fig. 3 shows a sectional view through a portion of the window. Figure 2along line III - III in a split ventilation position, Fig. 4 the part of the window from Figure 3 in a closed position, Fig. 5 a window heat exchanger with a heater, Fig. 6 another embodiment of window heat exchangers with a heat pump.

[0024] Figure 1 Figure 1 shows a house wall 1 with several windows 2. The windows 2 each have a ventilation device 3 and are connected to a control unit 4. The control unit 4 is also connected to a control panel 5 and to a transmitter / receiver unit 6. The control unit 4 is able to control the ventilation devices 3 and in Figure 2 The actuators 7 shown are used to control the schematically depicted locking devices 8 of the windows 2. Control can be carried out online via the transmitter / receiver unit 6 or via the control panel 5, as in a smart home system.

[0025] Figure 2 One of the windows shows 2. Figure 1In an enlarged perspective view, the window 2 has a frame 9 with a jamb 11 attached to a rebate 10 and a sash 12 movable relative to the jamb 11. The sash 12 is in a trickle ventilation position, separated from the jamb 11 by a gap 13, allowing ventilation of the space enclosed by the window 2. In the illustrated embodiment, the gap 13 of the sash 2 is circumferential. In another embodiment, not shown, the gap 2 can also be wedge-shaped by slightly tilting the sash 12 relative to the jamb 11. The ventilation device 3 has a ventilation duct 14 for fresh air and a ventilation duct 15 for exhaust air. An air outlet 17 of the ventilation duct 14 for fresh air is arranged in a window reveal 16.The ventilation duct 15 for exhaust air has an air inlet 16 on the front face of the frame 10. The possible airflows are indicated by arrows for clarity. The air outlet 17 and the air inlet 16 are shown as round openings in the exemplary embodiment. In an embodiment not shown, the air outlet 17 and the air inlet 18 can also be designed as slits extending around the entire circumference of the frame 9 surrounding the wing 12, thereby keeping the flow velocities low.

[0026] Schematically, in Figure 2 The locking device 8 is shown. This locking device 8 is designed as a conventional locking bar fitting, wherein the sash 12 is locked to the frame 9 in the illustrated trickle ventilation position by means of appropriately designed strike plates. The actuator 7 for driving the locking device 8 is designed as an electric motor.

[0027] Figure 3 Figure 1 shows an enlarged cross-sectional view through the section of window 2 containing the ventilation device 3. The exhaust air ventilation duct 15 runs essentially from the air inlet 18 straight through the frame to an air outlet 19, while the fresh air ventilation duct 14 runs from an air inlet 20 formed by the gap 13 between the sash 12 and the frame 9 into the ventilation device 3 and from there to the fresh air outlet 17. A heat exchange device 21 for the exhaust air ventilation duct 15 and the fresh air ventilation duct 14 is arranged in the ventilation device 3.

[0028] To guide fresh air through the gap 13, the ventilation device 3 has a sealing element 22 with a base 23 fixed in the frame 9. An elastic skirt 24 projects from the base 23 and is supported against the sash 12 by a thickening 25. Fresh air is directed through an opening 26 in this skirt 24 into the heat exchange device 21. The thickening 25 is pre-tensioned against the sash 12 by the elasticity of the skirt 24.

[0029] Starting from the position Figure 3 When the wing 12 is pressed against the frame 9, the sealing element 22 and further seals 27, 28 seal the wing 12 in the frame 9. This indicates a Figure 4 The closed position shown is shown. In this closed position, no fresh air exchange takes place through ventilation duct 14. Ventilation duct 15 for exhaust air is closed by non-return flaps (not shown) or active valves (also not shown).

[0030] Figure 5 Figure 1 schematically shows a cross-section through the device 21 for heat exchange between the ventilation duct 14 for fresh air and the ventilation duct 15 for exhaust air. The device 21 has a heat exchanger 29 designed as a plate heat exchanger with heat-conducting plates 30 that separate the two ventilation ducts 14 and 15. Fans 31 and 32 are arranged in both ventilation ducts 14 and 15. Furthermore, the ventilation duct 14 for fresh air has a heater 33 and an air filter 34 with pre- and fine filtration. The ventilation duct 15 for exhaust air also has a coarse air filter 35.

[0031] Figure 6 Figure 1 schematically shows a cross-section through another embodiment of a device 121 for heat exchange between a ventilation duct 114 for fresh air and a ventilation duct 115 for exhaust air. This embodiment differs from the one shown in Figure 1. Figure 5by means that a heater 133 is designed as a heat pump. Both ventilation ducts 114, 115 each have a heat exchanger 129, 129' of the heat pump and a fan 131, 132. A compressor 136 for refrigerant and an expansion valve 137 are arranged between the heat exchangers 129, 129' (shown schematically). The heat exchangers 129, 129' of the ventilation ducts 114, 155 exchange heat with the refrigerant of the heat pump.

Claims

1. Window (1) or French door comprising a sash (12) which is movable against a frame (9) having a window frame (11), the sash (12) being movable between a gap-ventilation position, in which the sash (12) is positioned a gap (13) away from a window frame (11), and a closed position, in which the sash (12) is in the window frame (11), and the window or French door comprising a locking device (8) for locking the position of the sash (12) with the frame (9), a ventilation device (3), a ventilation duct (14, 114) for fresh air, a ventilation duct (15, 115) for exhaust air, and a heat exchanger (29, 129, 129') for exchanging heat between the exhaust air and the fresh air,characterized in that the ventilation ducts (14, 114, 15, 115) are at least partially guided through the gap (13) formed in the gap-ventilation position between sash (12) and window frame (11), and in that a sealing element (22) is designed to release one of the ventilation ducts (14) in the gap-ventilation position and to close the ventilation duct (14) in the closed position.

2. Window or French door according to claim 1, characterized in that the heat exchanger (29, 129, 129') is arranged in a border (10), surrounding a window frame (11), of the frame (9).

3. Window or French door according to claim 2, characterized in that the sealing element (22) is arranged between the border (10) and the sash (12) and in that, in the gap-ventilation position of the sash (12), the one ventilation duct (14) is guided past the sash (12) and the sealing element (22) is guided past the window frame (11).

4. Window or French door according to at least one of claims 1 to 3, characterized in that the sealing element (22) has a base (23) and an elastic skirt (24) extending from the base (23).

5. Window or French door according to claim 4, characterized in that the base (23) is attached in one of the components of the sash (12) or of the frame (9), and the elastic skirt (24) is prestressed against the opposite component of the frame (9) or of the sash (12).

6. Window or French door according to at least one of claims 1 to 5, characterized in that the sealing element (22) is designed to extend around the sash (12).

7. Window or French door according to at least one of claims 4 to 6, characterized in that the elastic skirt (24) has a thickening (25) at its free end.

8. Window or French door according to at least one of claims 1 to 7, characterized in that the heat exchanger (29) is a plate heat exchanger in which the flows of the two ventilation ducts (14, 15) are separated by heat-conducting plates (30).

9. Window or French door according to at least one of claims 1 to 8, characterized in that an air filter (34) is arranged in the ventilation duct (14, 114) for fresh air.

10. Window or French door according to at least one of claims 1 to 9, characterized in that a fan (31, 32) is arranged in at least one of the ventilation ducts (14, 114, 15, 115).

11. Window or French door according to at least one of claims 1 to 10, characterized in that a heating system (33, 133) is arranged in the ventilation duct (14, 114) for fresh air.

12. Window or French door according to claim 11, characterized in that the heating system (133) is designed as a heat pump and in that each ventilation duct (114, 115) has a heat exchanger (129, 129') and in that the heat exchangers (129, 129') are part of the heat pump designed as a heating system (133).

13. Window or French door according to at least one of claims 1 to 12, characterized in that an actuator (7) is designed to move the sash (12) between the closed position and the ventilation position.

14. Window or French door according to at least one of claims 10 to 13, characterized in that a control unit (4) is connected to at least one of the components of the actuator (7), of the at least one fan (31, 32, 131, 132), and of the heating system (33, 133).

15. Window or French door according to at least one of claims 1 to 14, characterized in that air inlets (18, 20) of the ventilation ducts (14, 15, 114, 115) are positioned further away from the sash (12) than air outlets (17, 19).

16. Window or French door according to at least one of claims 1 to 15, characterized in that the air outlet (17) of the ventilation duct (14, 114) for fresh air is arranged in a window jamb (16).

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