Window or french 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 window with a sash that can be moved 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 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 wall made of a material with good heat conductivity. Inlet and outlet openings are located in the frame and a sash frame. The frame and sash frame are designed as hollow chambers. The disadvantage of this window is that the ducts are very long and, due to their design, have a small cross-section. This requires high flow 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 located in the parapet area below a window, which has one section each for the exhaust air discharge and the supply of outside air. An exhaust air inlet extends essentially across the entire width of the window. Adequate ventilation, however, requires large dimensions for the ventilation system in the parapet area, yet still allows for high flow velocities.

[0004] EP 1 580 374 A2 discloses a window in which a sash can be locked into the frame both in the gap ventilation position and in the closed position. This gap ventilation position allows for ventilation of a space defined by the window. The gap created between the sash and frame by the gap ventilation position can have a large cross-section, thus enabling good ventilation. However, the utilization of waste heat is not possible with an open gap.

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

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

[0007] This design utilizes the gap created between the sash and frame in the gap ventilation position to ventilate the room. Because this gap can be given a large cross-section, flow velocities are minimized. Furthermore, the window or French door is designed to be particularly compact. The large cross-section of the gap also allows for large contact surfaces for the heat exchanger, ensuring maximum utilization of the waste heat.

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

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

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

[0011] According to another advantageous development of the invention, complex control of the movements of the sealing element can be avoided if the base is fastened in one of the components of the sash or frame and the elastic apron is pre-tensioned against the opposite component of the frame or sash. With this design, the control of one ventilation duct 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 pivot opening position, the apron moves away from the component against which it is pre-tensioned. This prevents the sealing element from hindering the use of the window.

[0012] According to another advantageous development of the invention, a particularly large cross-section of the ventilation duct controlled by the sealing element can be produced if the sealing element is designed to run all the way around the wing.

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

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

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

[0016] According to another advantageous development 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. Fans are preferably arranged in both of the ventilation ducts, so that the exchanged air is guided over the heat exchanger, thus optimizing heat exchange.

[0017] According to another advantageous development of the invention, the window or French window can contribute to room heating if a heater is arranged in the ventilation duct for fresh air. When installed, the heater is arranged in the ventilation duct leading into the interior. This design combines the ventilation of a room containing the window or French window with heating. This leads to a particularly high level of comfort. Furthermore, thanks to the invention, the heater can be designed with a very large surface area surrounding the sash, so that temperatures on the heating surfaces can be particularly low. This contributes to energy savings in room heating.

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

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

[0020] According to another advantageous embodiment of the invention, ventilation control of the space defined 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 heater. A control panel of 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 connected to a so-called smart home and controlled with additional data, such as weather data or an alarm system.

[0021] According to another advantageous development of the invention, the circulation of exhaust air and fresh air between the ventilation ducts can be avoided if the air inlets of the ventilation ducts are located farther away from the sash than the air outlets. This design distributes the exhaust air as far away from the sash as possible, thus preventing unwanted 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 development of the invention, it contributes to further reducing the possibility of mold growth if the air outlet of the ventilation duct for fresh air is located in a window reveal. This allows the fresh air outlet to be located in the frame's surround. Since mold often forms in this area, this location is particularly well ventilated by the placement of the air outlet.

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

[0024] 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 also has a connection to a control panel 5 and to a transmitting / receiving unit 6. The control unit 4 is capable of controlling the ventilation devices 3 and Figure 2 illustrated actuators 7 for controlling schematically illustrated locking devices 8 of the windows 2. As with a smart home, the control can be carried out online via the transmitting / receiving unit 6 or via the control panel 5.

[0025] Figure 2 shows one of the windows 2 from Figure 1in an enlarged perspective view. The window 2 has a frame 9 with a frame 11 fastened in a surround 10 designed as a casing, and a sash 12 that can be moved against the frame 11. The sash 12 is in a gap ventilation position away from the frame 11, in which the sash 12 is a gap 13 away from the frame 11 and the space separated from the window 2 is ventilated from the environment. In the embodiment shown, the gap 13 of the sash 2 is designed to be circumferential. In another embodiment not shown, the gap 2 can also be wedge-shaped by slightly tilting the sash 12 against the frame 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.At the front of the frame 10, the ventilation duct 15 for exhaust air has an air inlet 16. For clarity, the possible airflows are marked with arrows. The air outlet 17 and the air inlet 16 are shown as round openings in the illustrated embodiment. In an embodiment not shown, the air outlet 17 and the air inlet 18 can also be designed as a gap-shaped opening extending around the entire circumference of the frame 9 around the sash 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 espagnolette fitting, with the sash 12 being locked to the frame 9 in the illustrated gap ventilation position by a corresponding design of locking plates. The actuator 7 for driving the locking device 8 is designed as an electric motor.

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

[0028] To guide the fresh air through the gap 13, the ventilation device 3 has a sealing element 22 with a base 23 secured in the frame 9. An elastic skirt 24 protrudes from the base 23 and rests against the blade 12 via a thickened portion 25. At this skirt 24, the fresh air is directed through an opening 26 into the heat exchange device 21. The thickened portion 25 is prestressed against the blade 12 by the elasticity of the skirt 24.

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

[0030] Figure 5 shows a schematic 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 separating the two ventilation ducts 14, 15. Fans 31, 32 are arranged in both ventilation ducts 14, 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 shows a schematic cross section through a further 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 that shown in Figure 5in 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 schematically illustrated compressor 136 for refrigerant and a throttle 137 are arranged between the heat exchangers 129, 129'. The heat exchangers 129, 129' of the ventilation ducts 114, 115 exchange heat with the heat pump's refrigerant.

Claims

1. Window (1) or French window with a sash (12) movable against a frame (9) having a frame (11), wherein the sash (12) is movable between a gap ventilation position, in which the sash (12) is a gap (13) away from a frame (11), and a closed position, in which the sash (12) lies in the frame (11), and with a locking device (8) for locking the position of the sash (12) to the frame (9), with a ventilation device (3), with a ventilation duct (14, 114) for fresh air and a ventilation duct (15, 115) for exhaust air and with a heat exchanger (29, 129, 129') for exchanging heat between the exhaust air and the fresh air, characterized in thatthe ventilation ducts (14, 114, 15, 115) are guided at least partially through the gap (13) formed between the sash (12) and the frame (11) in the gap ventilation position, and 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 frame (10) of the frame (9) surrounding a frame (11).

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

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

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

6. Window or French window according to at least one of claims 1 to 5, characterized in that the sealing element (22) is designed to run all the way around the wing (12).

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

8. Window or French window 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 window 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 window 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 heater (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 heater (133) is designed as a heat pump and that each of the ventilation ducts (114, 115) has a heat exchanger (129, 129') and that the heat exchangers (129, 129') are part of the heat pump designed as a heater (133).

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

14. Window or French window 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), the at least one fan (31, 32, 131, 132) and the heater (33, 133).

15. Window or French window 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 further away from the wing (12) than air outlets (17, 19).

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

Images