SE539426C2 - Ventilation windows, ventilation system, ventilation device, and method of manufacturing a ventilation device - Google Patents

Description

FIELD OF THE INVENTION The invention relates to construction and ventilation technology.

State of the art Increasingly stringent energy efficiency requirements for buildings, higher heating costs and increased environmental awareness have led to a situation where the goal is to build new buildings as airtight and vapor-tight as possible. It is also a goal to use energy efficient windows in the buildings and the goal is also to install these windows so that the heat loss is minimized at the edges of the window. Due to these reasons, today mechanical ventilation or mechanical exhaust air is used almost without exception in new buildings. In Finland, mechanical ventilation is now mandatory in new buildings.

In renovated and modernized buildings, the thermal insulation in the walls, roof and bottom of the building is usually increased. Due to used materials (thermal insulation materials, windows, vapor barriers), the permeability of air (and steam) to the outer walls of the building deteriorates. This can cause problems, especially in buildings where ventilation has originally taken place through gravity-based ventilation. After increased thermal insulation has been carried out in connection with a renovation or modernization, the building does not necessarily receive sufficient compensation of air, which can interfere with the function of gravity-based ventilation. For this reason, it is often necessary to add mechanical ventilation to renovated or modernized buildings. In buildings that only have mechanical deaeration of exhaust air, the heating of the compensation air has not been taken into account. The recovery of energy from the exhaust air is difficult in such buildings, and the preheating of incoming compensation air is challenging due to reasons such as condensation problems.

Mechanical ventilation refers to a system where not only the exhaust of air, but also the supply of compensatory air is performed mechanically. Mechanical ventilation is often implemented with the help of ventilation pipes installed in the roof of the building and a ventilation unit connected to the ventilation duct. Mechanical ventilation enables the recovery of some of the heat in the exhaust air by means of relatively simple technical means, in other words a heat exchanger, and transfers the recovered heat to the incoming air. Necessary ventilation pipes require large-scale pipe installations that are expensive and difficult to make. Ventilation pipes also tend to take up a lot of space in a building and this can completely prevent the installation of mechanical ventilation.

Ventra (TM) ventilation unit for installation in a window, presented by HAUTAU GmbH (as of this writing, downloadable from http: // hautautypo3. Kegelkom. De / fileadmin / ventratmp / wir-lassen- fenster- atmen- gb. Pdf), represents a new way to solve the ventilation in a building. Their ventilation unit has two fans that remove moist used air from a room and at the same time take in fresh air. The incoming air is preheated in a heat exchanger. The ventilation unit is installed inside a wall adjacent to the window frame when installing a new window.

Object of the invention The object according to the first aspect of the invention is to enable the installation of a ventilation device in a window as a retrofit, in other words after the window has been installed, or in a window which is already in use and which has been manufactured previously.

The object with respect to the second aspect of the invention is to enable the purchase or commissioning of the ventilation window in stages.

The object according to the third aspect of the invention is to simplify the design of building-specific, apartment-specific or room-specific ventilation.

The object in accordance with the fourth aspect of the invention is to offer new possibilities for remote management of the maintenance of ventilation devices and the ventilation system.

Brief description of the invention The first aspect of the invention can be carried out by means of the ventilation window according to independent claim 1 and by means of the ventilation device according to parallel independent claim 28. The method for the more economically efficient series production of the ventilation device for ventilation windows of different sizes is described in parallel in claim 30.

The second aspect of the invention may be carried out by means of the ventilation window according to claim 14.

The third aspect of the invention may be carried out by means of the ventilation system according to claim 15.

The dependent claims describe preferred embodiments of the ventilation window, the ventilation device and the ventilation system.

Advantages of the Invention The ventilation window comprises a frame, an outer frame to which at least one outer window of the outer frame is attached, and an inner frame to which at least one inner window of the inner frame is attached. Either the inner frame or the outer frame is attached to the frame, and the other is attached to the frame or to a window frame attached to the frame so that an intermediate space remains between the inner frame and the outer frame.

In addition, the ventilation window comprises at least one frame installation opening made in the frame, at least one mounting opening in the window frame made in the inner frame, and at least one mounting opening in the window frame made in the outer frame for the installation of the ventilation device.

The ventilation window enables installation of the ventilation device as a retrofit. For installation, it is sufficient that the arches of the ventilation window are either removed or that the window is open, but it is not necessary to remove the frames that have been installed on site, not to mention a need to make room for the ventilation device outside the frames by breaking break the wall structure. The heat exchanger used in the ventilation device of the ventilation window enables energy savings compared to a conventional ventilation window.

The ventilation window allows improvements in the efficiency of gravity-based ventilation or more generally for mechanical ventilation in renovated, modernized and restored buildings when at least some, if not all, air previously removed using gravity-based ventilation or mechanical ventilation is removed through the heat exchanger of the ventilation window. In this case, the temperature difference between the air removed from a room space and the compensation air can be used to heat compensation air (in cold environments) or cool the compensation air (in hot environments). Alternatively, the ventilation of homes and / or work environments in a building can mainly be carried out with the help of ventilation windows. This possibility is especially important when it comes to new buildings.

Compared to the above-mentioned HAUTAU GmbH Ventra (TM) ventilation unit, the ventilation device allows easier installation: Ventra (TM) requires that the heat exchanger is installed in a recess made in the wall by the window, which means that the installation is only possible together with the installation of a new window. In addition, it requires either wall work or at least a reduction in the size of the window or its opening area. This is not necessarily required for the ventilation window and ventilation device we have invented.

When the ventilation window also comprises a ventilation device installed in place in the ventilation window, where the ventilation device is installed in at least one frame installation opening and connected between at least one mounting opening in the window frame made in the outer frame and at least one mounting opening in the window frame made in the inner frame.

When the ventilation device also comprises an outer part and an inner part and a heat exchanger part arranged between them, where the heat exchanger part is arranged in the mounting openings and in the intermediate space so that the heat exchanger part remains in the space defined by the frame and the inner arches and / or outer arches. most to the edge of the light opening area, ventilation can be performed substantially without changing the size or appearance of the light opening area when the window is viewed from a longer distance. This is an important factor, especially when the ventilation window is installed in a protected building or a building with cultural-historical value in connection with renovation, modernization or restoration, as in this way it is not only possible to avoid major changes in the appearance of the building but also to be better able to avoid a need to even partially break down wall structures.

When the outer part of the ventilation window comprises a window frame installation part for air intake and a window frame installation part for exhaust air and where said window frame installation parts are installed in at least one mounting opening in the window frame made in the outer frame, and when the inner part comprises a window frame installation part for supply air and supply air for exhaust air and when the installation parts of said window frame are installed in at least one mounting opening in the window frame made in the inner frame, the window frames of the ventilation window can be used in a technically relatively simple way as bushings for ventilation ducts. This enables a reduction in the number of channels that may be needed in the wall structures or even completely eliminates the need for the necessary channels.

When the heat exchanger part remains between the outer part and the inner part so that these together form a cross section in the form of the letter C which follows the shape of the inner arch and / or the outer arch, the ventilation device can be given as much space as possible without the heat exchanger part being visible. from a longer distance from the direction of the light opening area. This improves the suitability of the ventilation window for renovation, modernization and restoration purposes, and on the other hand then provides an opportunity to increase the volume of the ventilation device and thus also the ventilation capacity that it delivers. The alternative to this C model is the I model, which is installed vertically or horizontally.

When the ventilation device is integrated in the frame, it is possible to hide the ventilation device from view as well as possible; however, so that there is no need to damage the wall outside the frame as much, if not at all, as when using prior art.

When the ventilation window includes at least one control unit for setting, to select or adjust the operating mode of the ventilation device, the versatility in the application of the ventilation window can be improved.

When the control unit is remotely controlled, most preferably over a wireless connection or an electrical network connection, the operating mode of the ventilation window can also be set, selected or adjusted when no one is at the window.

When the ventilation window has at least one detachable blocking part, where after removal of this blocking part the ventilation device can be installed in the ventilation window to provide a ventilation window according to the first aspect of the invention after the installation of the window in place, ventilation windows can be purchased or used gradually. In this way, it is possible to install ventilation devices in a renovated, modernized or restored building, for example only after all ventilation windows have been installed on site. On the other hand, it is also possible to install ventilation devices in a building one apartment or floor at a time. For example, in housing company-type buildings, it allows residents or owners (or unit holders who own the apartment's share) in each apartment to decide whether ventilation devices are installed in the apartment or not, and if they are installed, if they are installed in all windows or just a few windows.

The ventilation system of a building, apartment or room comprises at least one remotely controlled ventilation window according to the first aspect of the invention, comprising a control unit, wherein the ventilation window is arranged as a window which is controlled or is controllable individually or together with others as a group. Such a ventilation system can be carried out without large-scale installations of ventilation ducts, which on the other hand also enables space savings.

When the ventilation windows belong to a group in the ventilation system arranged to operate under the control unit so that the ventilation in a building, apartment or room is carried out in whole or in part by using the ventilation system, the ventilation system can be controlled in a centralized manner.

The ventilation system allows improvements in the energy efficiency of ventilation especially in renovated, modernized and restored buildings compared to gravity-based ventilation or more generally with mechanical ventilation, when at least part, if not all air was previously removed using gravity-based ventilation or mechanical ventilation, is removed by the heat exchanger of at least a ventilation window included in the system.

When the target level of the ventilation system can be adjusted and when the ventilation system is configured to control the ventilation of individual ventilation windows to achieve the target level of the ventilation system through the common ventilation effect of all or some of the ventilation windows included in the ventilation system, the ventilation of an apartment or building can be intensified. .

When some of the ventilation windows are sometimes used to remove only air from an apartment and when some of the ventilation windows are used to take in fresh air into the apartment, it is possible to achieve drafts, in other words very effective ventilation, using the ventilation system by use the ventilation windows. Alternatively, air can be guided in a particular direction (for example kitchen) in an apartment, whereby it is possible to reduce odor nuisances caused by the activities.

When the ventilation system also includes at least one sensor for controlling the operation of the ventilation system and when the ventilation system is configured to increase or decrease the ventilation when the actual ventilation is above or below the limit value, the desired ventilation level can be arranged in the desired manner.

List of drawings In the following, the window is presented in greater detail by means of the exemplary embodiments in the accompanying drawings FIGS. 1-20. The drawings show: FIGS. 1 and 3 are perspective views of a ventilation window, to which a ventilation device has been installed; Figures 2 and 4 are perspective views of the ventilation window shown in the drawings Figures 1 and 3 without the ventilation device; Fig. 5 ventilation device seen from an installation direction inside an apartment; Fig. 6 ventilation device seen from an installation direction from the outside; Fig. 7 is an outside view of the ventilation window presented in drawings Figs. 1 and 3; Fig. 8 is an outside view of the ventilation window presented in drawings Figs. 2 and 4 without the ventilation device; Fig. 9 is a cross-section of the ventilation window seen diagonally from below; Fig. 10 ventilation window seen from the outside; Fig. 11 vertical cross-section of the ventilation window; Fig. 12 horizontal cross-section of the ventilation window presented in drawing Fig. 11; Fig. 13 section of the internal structure of the ventilation device in the direction of the window surface; Fig. 14 section of the inner structure of the ventilation device in the direction perpendicular to the window surface; Fig. 15 sections XV-XV of the ventilation device; Fig. 16 sections XVI-XVI of the ventilation device; Fig. 17 sections XVII-XVII of the ventilation device; Fig. 18 sections XVIII-XVIII of the ventilation device; Fig. 19 is a diagram of a ventilation system comprising several ventilation windows; and FIG. 20 control unit of the ventilation window.

The same reference numerals refer to the same parts in all the figures (FIG).

Detailed Description of the Invention Figures 1 and 3 show a perspective view of ventilation windows 10, to which a ventilation device 50 is installed. The ventilation window 10 comprises upper frame 11, lower frame 13 and right frame 14 and left frame 12.

Ventilation window 10 has an inner arch and an outer arch. The inner frame includes upper inner frame 18, lower inner frame 16 and left inner frame 15 and right inner frame 17. Correspondingly, the outer frame (cf. FIGS. 7 and 10) of ventilation window 10 includes upper outer frame 731, left outer frame 721, lower outer frame 711 and right outer frame 74.

The outer arch can be covered by ramp panel, which preferably comprises upper ramp panel 73, lower ramp panel 71, left ramp panel 72 and right ramp panel 75.

The frame and the inner and outer arches of ventilation windows 10 define light opening area 19. Intermediate space 90 remains between the inner and outer arches (cf. FIG. 9).

The inner and outer arches of ventilation windows 10 may have one or more glass panes. The inner frame preferably has two squares and the outer frame has two squares. Such a ventilation window is presented in drawing FIG. 9.

The outer pane 91 of the outer frame (in other words the glass surface which is against outdoor air) and the inner pane 92 of the outer frame are most preferably made of a single insulating glass element. In this case, there are spacer strips 95 between the outer pane 91 of the outer frame and the inner pane 92 of the outer frame and the so-called hermetic space remaining between the outer pane 91 of the outer frame and the inner pane 92 of the outer frame is sealed with insulating glass package sealant 96. Such an insulating glass element is mounted on space in the outer frame by means of glazing strips 98 and glazing wedges 97.

Similarly, the outer pane 93 of the inner frame and the inner pane 94 of the inner frame (in other words, the glass surface facing the space) are most preferably made of a single insulating glass element, which, like the insulating glass element attached to the outer frame, is built with spacer strips 95 and sealed to form a so-called hermetic space by using insulating glass package sealant 95. The insulating glass element is installed in place in the inner frame by means of glazing strips 98 and glazing wedges 97.

The surfaces of the outer windows and inner windows can be coated according to prior art. A particularly advantageous coating is described in Finnish patent application 20106030. Ventilation windows 10 may preferably be made using the coating presented in said patent application.

The outer frame of the ventilation window 10 is most preferably hinged to the frame or to the inner frame by means of hinges 20, and the inner frame is hinged to the frame or to the outer frame by means of hinges 20. By means of the hinges, intermediate space 90 and in particular the inner window 92 of the outer frame and the outer pane 93 of the inner frame are washed.

Ventilation device 50 (cf. FIG. 5) is provided with heat recovery and it has been installed or can be installed to the frame structure of ventilation windows 10, in other words most preferably to upper frame 11 and lower frame 13 and to the frame between them, in other words most preferably to either the right frame 14 or the left frame 12. Compared to the Ventra (TM) ventilation machine, the ventilation machine (heat exchanger 306 and machinery) of the ventilation device is located inside the frame structure.

Ventilation device 50 in the form of the letter C comprising upper arm 51, body 52 and lower arm 53. The installation part 22 of the frame for the supply air grille and the installation part 23 of the frame for the exhaust air grille are located on the upper end of the ventilation device 50.

The installation part 21 of the frame is most preferably located adjacent to the body 52. Necessary power supply, machinery and control logic can be placed in the installation part 21 and body 52 of the frame.

Ventilation device 50 also comprises the installation part 54 of the exhaust air grille, mounted towards the outdoor space, and another frame installation part 55 for supply / supply air grille, which comes towards the outdoor space (cf. FIG. 6). Figures 2 and 4 illustrate a perspective view of ventilation windows 10 without ventilation device 50, which are presented in the drawings Figures 1 and 3. They also illustrate how ventilation device 50 is installed in ventilation windows 10.

The inner arch of the ventilation window 10 comprises the edge 35 of the mounting opening in the window frame, which edge 35 defines the mounting opening in the window frame 36, and edge 33 of the mounting opening in the window frame, which edge 33 defines the mounting opening in the window frame 34.

The outer arch comprises edge 37 of the mounting opening in the window frame, which edge 37 defines mounting opening in the window frame 38, and edge 39 of the mounting opening in the window frame, which edge 39 defines mounting opening in the window frame 40.

The frame comprises edge 31 of the frame installation opening, which edge 31 defines frame installation opening 32.

It is obvious that the frame, the inner frame and the outer frame can have several mounting openings.

The installation part 22 of the window frame of the ventilation device 50 for the supply air grille and the installation part 23 of the window frame of the exhaust air grille are installed in mounting openings 34, 36 in the inner frame. Instead of the upper arch 18 - left arch 15 arrangement, an arrangement of upper arch 18 - right arch 17 can be used, or correspondingly both installation window parts 22, 23 can be placed on only one side of the arch, for example side by side (upper arch 18 and / or the lower frame 16) or on top of each other (the left frame 15 and / or the right frame 17).

Correspondingly, the installation part 54 of the window frame of the ventilation device 50 for the exhaust air grille and the installation part 55 of the window frame supply / supply air grille are mounted in mounting openings 38, 39 in the outer frame.

The frame installation part 21 of the ventilation device 50 is installed in the frame installation opening 32.

Ventilation windows 10 can be installed on site in a building without ventilation device 50. In this case, the installation openings 34, 36, 38 and 40 of the window frame and frame installation opening 32 are closed by means of a blocking part, most preferably in a tight manner. The blocking part has been removed from the ventilation window 10 shown in FIGS. 2 and 4.

When ventilation windows 10 are used without ventilation device 50, mounting openings 32, 34, 36, 38, 40 are processed in ventilation windows 10 closed by means of blocking parts so that the capacity for air leakage and the thermal insulation capacity of ventilation window 10 which is not equipped with ventilation device 50 correspond to air leakage of the window frames and most preferably also of the frames of ventilation windows 10. The appearance of the blocking parts also most preferably corresponds to the appearance of the frames and most preferably also the window frames. The blocking parts can be easily removed when installing ventilation device 50.

A window already installed in a building can be converted to a ventilation window 10 by removing the window frames from the window and by making window frame mounting openings 34, 36, 38, 40 in the window frames and by making a frame installation opening 32 in the frame while the frame is in place, to examples by milling or sawing. After this, the window frames are installed in place and the ventilation device 50 or the blocking parts are installed in the ventilation window.

Ventilation windows 10 and ventilation device 50 installed therein are intended for use in particular in modernized, renovated or restored buildings, where mechanical ventilation has not necessarily been built during the construction phase. In connection with window renovation, mechanical ventilation can be performed by installing a required number of ventilation windows 10 in the building, apartment or room.

Mechanical ventilation can be performed as a ventilation system 1900 by using at least one but preferably several ventilation windows 10, each with ventilation device 50. Ventilation windows 10 or their ventilation devices 50 communicate with each other. Using ventilation system 1900, ventilation throughout the building, apartment or room can be controlled by controlling the operation of ventilation devices 50 as a whole. The building, apartment or room may also comprise ventilation windows 10 which do not have ventilation device 50 and windows which are not ventilation windows.

To control the ventilation in the building, apartment or room, ventilation device 50 or ventilation windows 10 may include sensor system 501 which includes one or more sensors. In this case, sensor system 501 is most preferably designed by means of a temperature sensor, humidity sensor and / or carbon dioxide sensor.

In order to be able to perform ventilation systems 1900, ventilation windows 10 or their ventilation devices 50 can communicate with each other, most preferably wirelessly. Ventilation system 1900 enables the execution of room-specific ventilation and also an apartment-specific or even building-specific ventilation plan.

In this way, ventilation windows 10 are useful for creating a negative pressure in one or more rooms or in central parts of an apartment or building, while at the same time other ventilation windows 10 provide more compensating air. This provides an air flow directed towards the room or rooms with a negative pressure or towards parts of the apartment or building with a negative pressure or towards the door.

When, for example, the kitchen is provided with a negative pressure during cooking, an air flow from other parts of the apartment is directed towards the kitchen and in this way it is possible to prevent or reduce the access of odors or odors created by the cooking to other parts of the apartment.

The control algorithms of ventilation system 1900 can be downloaded to memory 505 of ventilation device 50, for example wirelessly. In this way, dongle-type receivers 408 are connected to the user's home computer or apartment computer 407, with dongle-type receivers 408 having a wireless connection to the windows and, for example, over the Internet to a service provider's computer 406.

In this way, the service provider can update or change the control algorithm, study fault conditions of ventilation device 50, or compile time series data for optimizing the algorithm, without having to be physically present.

Ventilation device 50 integrated in ventilation window 10 can be modular, in which case it can be changed at prescribed intervals and an old ventilation device 50 can be serviced without a significant interruption in operation. Ventilation device 50 can be placed in either vertical or horizontal position. Ventilation device 50 integrated in the construction of ventilation windows 10 is most preferably of such a size that it does not significantly or most preferably does not reduce the light opening area 19 of ventilation windows 10 at all.

Ventilation device 50 comprises a ventilation unit, which includes heat exchanger 306 (heat recovery cell), and in addition also control unit 320 and ducts (supply air duct 303 and exhaust air duct 304, with intake and exhaust directions seen from the side of the room space, in other words from the side of the inner window 94 of ).

Ventilation device 50 in the form of the letter C comprises body 52, upper arm 51 and lower arm 53.

Ventilation devices 50 can be manufactured in different sizes for ventilation windows 10 of different sizes. In this way it is possible to reduce the number of manufactured objects kept in stock, when body 52 is made in series of the selected sizes (for example on the basis of the frame height or the height of light opening area 19) and when a single size is used for upper arm 51 and / or lower arm 53 for ventilation windows 10 of several sizes or for all ventilation windows 10. The housing of the device (at least body 52 but possibly upper arm 51 and lower arm 53) of ventilation device 50 can most preferably be manufactured by molding plastic. The plastic casing is coated with a heat-insulating material, for example urethane or polyurethane (suitable thickness for example 5 mm). A countercurrent heat exchanger adapted to the dimensions of the device housing of the ventilation device 50 is installed in the housing of the device (most preferably in body 52). Axial fans 303B, 304B with sufficient strength are also installed in the device housing (most preferably in body 52) of ventilation device 50, in the intake and exhaust ducts (in other words axial fan 303B in supply air duct 303 and axial fan 304B in exhaust air duct 304).

Axial fans 303B, 304B can be low voltage (0-24V) fans (such as fans used in the power supplies of PCs). The power control of axial fans 303B, 304B is most preferably performed as pulse width modulation. When the pulse width of axial fan 303B, 304B is maximum (100%), the rotating voltage in the electric motor of the axial fan 303B, 304B in question is switched on all the time, in other words pulse width = 1. When the pulse width of axial fan 303B, 304B minimal (0%), the rotating voltage in the electric motor of the axial fan 303B, 304B in question is not turned on at all, in other words pulse width = 0. The pulse width can vary between [0, 1].

Ventilation device 50 requires only external power supply. There is no need to use any particular solution in terms of power supply. The goal is to carry out power supply in as discreet a way as possible, but if necessary, exposed wires are used either at the corner of the floor and wall below or above the skirting board or at the corner of the ceiling and wall. Especially if there is an electrical element or an electrical outlet under the ventilation window 10, power supply can be arranged by using the same wires.

The control logic of ventilation device 50 can be performed in a simple manner and in a manner very similar to that of a conventional ventilation unit.

In the following, we present the operation of ventilation device 50 through use examples. Ventilation device 50 can be configured to perform all or only part of the following use examples a) -i).

Example of use a) basic situation: In the basic situation, the ventilation device 50 operates at the selected power and at pre-programmed intake / exhaust conditions.

In this case, both axial fan 303B in supply air duct 303 and axial fan 304B in exhaust air duct 304 are controlled by, for example, conditions 0% - 100% of full power. The control values for axial fans 303B, 304B have been pre-programmed for the possible power settings in the user interface of ventilation device 50, for example 1-2-3-4.

At each power setting, the control values for axial fans 303B, 304B blow out slightly above intake. This creates a small negative pressure in the room and prevents wetting of the structures at the potential leakage sites of the vapor barrier.

Example of use b) independent of wind conditions during ventilation: Ventilation device 50 may also have feedback from pressure difference sensor 318, in which case intake / exhaust conditions are controlled by means of the pressure difference between outdoor air and indoor air.

In this case, the pre-programmed control values presented in use example a) can be replaced by real-time measurement. Pressure difference sensor 318 measures the pressure difference between indoor air and outdoor air. When the air resistance in both supply air duct 303 and exhaust air duct 304 is known, it is possible to calculate the necessary control signals for both axial fan 303B in supply air duct 303 and axial fan 304B in exhaust air duct 304 to achieve a ventilation volume corresponding to selected power setting.

For example, wind pressure directed towards ventilation windows 10 results in a situation where the outdoor air has an overpressure compared to the indoor air. In this case, the control value of axial fan 303B in supply air duct 303 can be reduced and the control value of axial fan 304B in exhaust air duct 304 can be increased to achieve the same or approximately the same ventilation capacity and ventilation conditions as in windless conditions. By doing this, the ventilation can be done regardless of wind conditions, at least at the most everyday wind speeds.

Example of use c) detection of freezing of heat exchanger: Control unit 320 of ventilation device 50 measures the power required by the exhaust and performs other available measurements and tries to detect freezing of the heat exchanger 306.

Freezing can be detected from the increased flow resistance in exhaust air duct 304. This can be observed by measuring the current and voltage of axial fan 304B and / or their phase difference, or for example by means of an additional pressure difference sensor.

When exhaust air duct 304 freezes, the flow resistance increases, thereby increasing the load on the motor of axial fan 304B.

For example, in an AC motor of a certain type, the phase difference (cos 4>) of the current-voltage vector indicates the motor load. Alternatively, in a DC motor (which runs at direct current) of a certain type, the motor load increases as the current drawn by the motor increases or as the rotational speed increases. When the increase in the motor load of axial fan 304B in exhaust air duct 304 is detected by control unit 320, it means that the flow resistance in exhaust air duct 304 has increased.

When control unit 320 detects that the flow resistance in exhaust air duct 304 has increased, it means that exhaust air duct 304 has frozen or freezes.

Operating option ci): When freezing, it is possible for control unit 320 to alarm and / or turn on a specific melting function, which reduces the power of axial fan 303B in supply air duct 303 of ventilation device 50 or stops it and increases axial fan 304B in exhaust air duct 304 to melt the ice . In addition to this or as an alternative to this, control unit 320 can control that the current to a heating resistor is to be turned on to melt the ice.

Operating options c-ii): In a situation where ventilation device 50 has a communication connection to one or more other ventilation devices 50 in the same apartment (ventilation system 1900), the melting of ice can be arranged so that frozen ventilation device 50 stops axial fan 303B in supply air duct 303, whereby the the hot air flowing into the exhaust air duct 304 melts the heat exchanger 306. Increased exhaust can be compensated for by stopping axial fan 304B in the exhaust air duct 304 of another ventilation device 50. In this case, unheated outdoor air flows into the room by compensating near the ventilation device 50, fan 304B in the exhaust duct is stopped, no moisture flows causing freezing into the heat exchanger 304.

Example of use d) control based on air quality: If ventilation device 50 has local sensors related to air quality, ventilation device 50 can use the information for power control.

In this case, for example, a humidity sensor or carbon dioxide sensor (for example, temperature and / or humidity sensor 317 for exhaust air) is installed in exhaust air duct 304. These measure the quality of indoor air. The information on the quality of indoor air is used in power control so that when excessive humidity and / or carbon dioxide content is detected, the strength of ventilation device 50 (in other words the operating power of axial fan 303B in supply air duct 303 and the operating power of axial fan 304B in exhaust air duct 304) is increased. takes to improve air quality.

It is also possible to control the power of the ventilation device so that the greater the deviation between the desired and measured air quality, the greater the power control.

Example of use e) information exchange to optimize total ventilation: If ventilation device 50 has a connection to another ventilation device 50 belonging to ventilation system 1900, ventilation devices 50 can transmit or exchange information to optimize total ventilation.

Such information (including parameters) includes air quality at ventilation windows 10 detected by sensor system 501 connected to control unit 320, air quality at other ventilation windows 10, information about potential freezing or melting sequences of heat exchangers 306, power used by other ventilation devices 50 belonging to ventilation systems 1900 and possibly the basic pressure difference between outdoor air and indoor air at different ventilation windows10.

On the basis of the information, it is possible to calculate wind conditions and to use the information for choosing the direction of air circulation in a room, apartment or building, for example in accordance with use example b).

When ventilation devices 50 in a building or apartment can communicate with each other, they can control the operation of ventilation system 1900 in a decentralized manner to an optimal or almost optimal level in terms of ventilation in the building or apartment.

In this case, for example, apartment computer 407, line unit or all ventilation windows 10 may have air quality information detected by sensor system 501 connected to control unit 320 of other ventilation windows 10.

In this way, the ventilation can be intensified so that ventilation device 50 which measures the worst air quality (in other words where the deviation between the desired and measured air quality is greatest) removes more air than normal, and correspondingly, other ventilation devices 50 compensate for the increased removal by increasing its suction power.

Factors such as people staying in certain rooms or other factors that degrade air quality, such as cooking or bathroom use, can thus be taken into account.

The intensified ventilation described here can be performed automatically.

Application example f) change direction of ventilation: If ventilation device 50 or ventilation devices 50 belonging to ventilation system 1900 have a connection to a remote control, the remote control can be used to manually control the capacity and direction of ventilation.

In this case, the remote control serves as a central control unit, which provides control value to one or more ventilation devices 50.

The remote control may provide a request to intensify or reduce ventilation or to provide an air flow from one ventilation window 10 to another. However, the actual function check and feedback takes place between ventilation devices50. In this way, the remote control can also be switched off after giving a control command.

Application example g) remote control of ventilation devices 50: If ventilation device 50 has a connection to dongle type receiver 408 (remote control dongle), updates can be downloaded over the remote control connection to the preset values and control algorithms in ventilation device 50.

In addition to this or alternatively, ventilation device 50 may send diagnostic data over the remote connection for service and management operations.

The updates may include changes in the unit configuration, changes in either the number or type of complete ventilation devices, changes in the surface size of the apartment, or ventilation control according to the customer's wishes, for example by timing the operation of the system based on residents' shift work. and holidays). The diagnostic data may include operating history of ventilation device 50, based on operating history the service provider may analyze the operation of ventilation device 50 or ventilation system 1900 and possibly adjust the operation of ventilation system 1900 or offer the customer more appropriate units.

Service measures relate to monitoring the conditions of ventilation devices 50 and responding to fault situations. Typical cases include monitoring the blockage of supply air filters 302 or exhaust air flow filters 309 and possibly also responding to a need for replacement by agreement, for example by supplying new filters or by sending a technician to replace the filters.

Example of use h) transition from remote control to independent operation: If the communication connection of ventilation device 50 to other ventilation devices 50 or to central control is lost, ventilation device 50 switches to independent operation which is operated on the basis of its own local measurements.

In this case, said ventilation device 50 takes care of local ventilation and selects the intake / exhaust ratio itself.

In this situation, the total ventilation in a building or apartment can also work at least as well as in the solution of ventilation that is controlled in a centralized way.

The total basic power of ventilation devices 50 is sufficient to provide ventilation throughout the building or apartment and the measurement results of any local air quality sensors are available locally (to controller 320 of ventilation device 50, which includes an air quality sensor).

Example of use i) fault of individual ventilation device 50: Ventilation system 1900 need not have an actual central unit, but the logic of individual ventilation devices 50 (control unit 320), which logic is performed by microprocessor 508 in control unit 320, includes a possibility of joint operation.

In this case, if an individual ventilation device 50 fails, the remaining ventilation system 1900 can continue its decentralized operation.

Ventilation windows 10 (or their ventilation devices 50) most preferably communicate wirelessly. The same wireless bus can also be used for wireless control of ventilation windows 10 and for wireless connection so that the wireless transceiver of the window communicates with the dongle connected to a computer (apartment computer 407) equipped with an Internet connection, with the computer located in the apartment. The control algorithm simultaneously enables the use of several ventilation windows 10 in the same apartment and optimizes the ventilation of the room, apartment or building.

The operation of ventilation windows 10 can be controlled over a network connection, such as an Internet connection 405, for example by means of dongle-type receivers 408 such as USB dongle. Room-specific, apartment-specific or building-specific ventilation control can thus be performed.

Fig. 11 shows a vertical cross-section of ventilation window 10, and Fig. 12 shows a horizontal cross-section.

Ventilation windows 10 shown in the drawings Figures 11 and 12 differ from ventilation windows 10 shown in Figure 9 in that the outer frame has only the outer pane 91 of the outer frame, in other words the outer pane has a single glass. In this case, the outer frame has not been designed as an insulating glass element, but the outer window 91 in the outer frame is mounted in place in the outer frame by means of glazing strips 98 and glazing wedges 97.

Ventilation windows 10 shown in the drawings Figures 11 and 12 differ from those shown in Figures 1 to 4 also in that the outer arch has been made by using a profiled hollow section, in particular a profiled aluminum section. The frame panel is also preferably made using a profiled hollow section, in particular a profiled aluminum section. In this case, a seal is preferably used between the frame panel and the outer arch, with the seal allowing some water under the frame panel to drain out. When a gap is left between the outer frame and the frame, intermediate space 90 can be made into a ventilated space.

Feedthrough 1208 is made in the inner frame (upper inner frame 18 and left inner frame 15 or right inner frame 17). Inner grille / air guide 1209 is attached to the distal end of bushing 1208 when viewed from vent 50. Collar 1203 is installed on it at the opposite end of bushing 1208, which collar 1203 is most preferably formed as a flange-like collar so that collar 1203 can not slide into bushing 1208. Collar seal 1201 is installed around the collar 1203 or against it, and collar seal 1201 is connected to air intake / exhaust 1204 of ventilation device 50. Exhaust air grille 23 and supply air grille 23 shown in FIGS. 1 and 2 are made exactly as follows.

Feedthrough 1206 is made in the outer frame (upper outer frame 731 and left outer frame 721 or right outer frame 741). Outer grille / air guide 1207 is attached to the far end of bushing 1206 when viewed from vent 50. Collar 1203 is installed on the opposite end of bushing 1206, which collar 1203 is most preferably designed as a flange-like collar so that collar 1203 does not can slide into bushing 1208. Collar seal 1201 is installed around or against collar 1203, and collar seal 1201 is connected to air intake / exhaust 1205 of vent device 50. Exhaust air grille 54 and intake / supply air grille 55 shown in FIG. 10 are made exactly as follows.

The inner arch of the ventilation window 10 can be opened in the usual way. To open the outer arch (which is necessary for example when the outer surface of the outer pane 91 of the outer arch needs to be washed from the inside of the room), ventilation device 50 is removed, and the outer arch can be opened, after which the outer pane 91 of the outer arch can be washed. Fig. 13 shows a section of the inner structure of ventilation device 50 in the direction of the window surface. Fig. 14 shows a section of ventilation device 50 perpendicular to the window surface, to the section direction XIV-XIV shown in Fig. 13. Figs. 15 to 18 show sections XV-XV - XVIII-XVIII. Ventilation device 50 includes axial fan 303B in supply air duct 303 and axial fan 304B in exhaust air duct 304 (intake and exhaust directions seen from the side of the inner window 94 in the inner arc). These blow or absorb air through heat exchanger 306. Heat exchanger 306 is most preferably a counterflow cell, but can also be a so-called rotating cell. There is flow divider 305 at each end of heat exchanger 306. Flow divider 305 leads from adjacent ducts to heat exchanger 306 and divides intake and exhaust air from heat exchanger 306 to adjacent ducts.

To attenuate the sound caused by axial fan 303B in supply air duct 303, supply air flow muffler 308 is used in ventilation device 50. To attenuate the sound caused by axial fan 304B in exhaust air duct 304, exhaust air flow muffler 307 in ventilation device 50 is used.

As cross-section XV-XV (cf. FIG. 15) illustrates, supply air filter 302 and two air control valves 310 are installed in upper arm 51 of ventilation device 50. In addition, upper arm 51 may also have indoor air temperature and / or humidity sensor 314 as well as pressure difference sensor 318 for the pressure difference between indoor air and outdoor air.

The temperature and / or humidity of the air blown indoors can be measured using the temperature and / or humidity sensor 316 for the air blown indoors. The temperature and / or humidity in the exhaust air can be measured by means of the temperature and / or humidity sensor 317 for the exhaust air.

Potential condensation water is collected in condensation water collection troughs 311 and is removed by means of condensate water drain pipes 312 through condensation water drainage holes 313.

As cross-sections XVIII-XVIII (cf. FIG. 18) illustrate, exhaust air flow filters 309 and two air control valves 310 are installed in lower arm 53 of ventilation device 50. Lower arm 51 may also have outdoor air temperature and / or humidity sensor 315 and air pipe 319 for pressure measurement. outside.

The efficiency of ventilation device 50 can be improved by adding thermal insulation 50 to body 52 and possibly also to upper arm 51 and lower arm 53.

Fig. 19 presents the basic principle of ventilation system 1900. Ventilation system 1900 comprises at least one but preferably several ventilation windows 10 as shown above, where each ventilation window has ventilation device 50. Ventilation windows 10 have window-specific power supply.

According to the first aspect, ventilation windows 10 can communicate with each other either via a wired data communication connection, especially power network connection (especially Home Plug / dLAN / PowerLan / Powerline communication) or via a wireless data communication connection 402 (especially WLAN, GSM, 3G, Bluetooth).

According to the second aspect, ventilation windows 10 may communicate with dongle-type receivers 408 via wired data communication or wireless data communication connection 403. Dongle-type receivers 408 are connected via wireless data communication connection 404 or a wired data communication connection to apartment internet or 407. data communication connections to the service provider's computer.

Fig. 20 shows control unit 320 of ventilation window 10 for controlling ventilation device 50. Control unit 320 can be placed in either ventilation window 10 or ventilation device 50.

Control unit 320 includes microprocessor 508, power supply 504 and memory 505 as well as wireless data transmission option 506. In addition, control unit 320 may include expansion option 507 for controlling blinds or the like.

The algorithms and compiled data are stored in memory 505 of controller 320.

Sensor system 501 of control unit 320 of ventilation window 10 is in contact with the sensors in the ventilation device, in other words with indoor air temperature and / or humidity sensor 314, outdoor air temperature and / or humidity sensor 315, temperature and / or humidity sensor 316 for air blown indoors , exhaust air temperature and / or humidity sensor 317, and pressure difference sensor 318 for the pressure difference between indoor air and outdoor air. Sensor system 501 collects information about the conditions prevailing in the rooms and / or in outdoor air to the control unit.

Actuators 502 in control unit 320 of ventilation window 10 control the actuators of ventilation device 50. These include axial fan 303B in supply air duct 303, axial fan 304B in exhaust air duct 304 as well as to an optional air heating unit.

Control unit 320 of ventilation window 10 may also include a radio connection to other ventilation windows 10 and / or to apartment computer 506.

The invention should not be construed to be limited only by the following claims, but the invention should be construed to include all of their legal equivalents and combinations of the embodiments presented.

Especially instead of or in addition to axial fan 303B, 304B, one or more centrifugal fans can be used.

Instead of or in addition to the method presented in the drawings for installing ventilation device 50 on the hinge side of ventilation window 10, ventilation device may be installed on the locking side of ventilation window 10 (usually the side opposite to the hinge side).

List of reference numbers used: ventilation window 11 upper frame 12 left frame 13 lower frame 14 right frame left inner frame 16 lower inner frame 17 right inner frame 18 upper inner frame 19 light opening area hinges 21 frame installation part 22 window frame installation part (supply air grille) 23 window frame installation part frame installation opening 32 frame installation opening 33 edge of mounting opening in the window frame 34 mounting opening in the window frame edge of mounting opening in the window frame 36 mounting opening in the window frame 37 edge of mounting opening in the window frame 38 mounting opening in the window frame 39 mounting opening 52 window mounting lower arm 54 installation part of the window frame (exhaust air grille) 55 installation part of the window frame (access / supply air grille) 71 lower frame panel 72 left frame panel 73 upper frame panel 75 right frame panel 90 intermediate space 91 surface outer window in the outer frame 92 inner window in the outer frame 93 outer window in the inner frame 94 inner window in the inner frame 95 spacer strip 96 insulating glass package sealant 97 glazing wedge 98 glazing strip 301 thermal insulation (thermal insulation material) 302 supply air filter 303 supply air duct 304 air duct 304 which divides supply air and exhaust air to adjacent ducts 306 heat exchanger (meeting flow cell, can also be a so-called rotating cell) 307 exhaust air flow nozzle 308 supply air flow nozzle 309 exhaust air flow filter 310 air control valve 311 collection tray for condensed water 31 condensate 315 outdoor air temperature and / or humidity sensor 316 temperature and / or humidity sensor for air blown indoors 317 exhaust air temperature and / or humidity sensor 318 pressure difference sensor between indoor air and / or humidity sensor ch outdoor air pressure 319 air pipes for pressure measurement from indoor to outdoor 320 control unit 401 window-specific power supply 402 wireless connection between windows 403 wireless connection to dongle-type receiver (408) 404 wired connection from dongle (408) to apartment computer (407) computer service 405 internet (406) 406 service operator computer 407 apartment computer 408 dongle-type receiver 501 sensor system 502 actuators (such as fans, potential air preheating) 503 radio contact to other windows and / or apartment computer 504 power supply 505 memory (algorithms, data logging) 506 alternative wire 507 expansion options (blinds, etc.) 508 microprocessor 711 lower outer frame 721 left outer frame 731 upper outer frame 741 right outer frame 1140 profiled aluminum frame section 1141 profiled aluminum frame section seal 1201 collar seal 1203 collar 1204 air intake / exhaust from ventilation device 1205 ation device 1206 bushing 1207 outer grille / air guide 1208 bushing 1209 inner grille / air guide 1900 ventilation system

Claims (30)

A ventilation window (10) comprising: - a frame (11, 12, 13, 14); an outer frame (711, 721, 731, 741) to which at least one outer frame (91) of the outer frame is attached; and - an inner frame (15, 16, 17, 18) to which at least one inner window (94) of the inner frame is attached; and wherein either the inner frame (15, 16, 17, 18) or the outer frame (711, 721, 731, 741) is attached to the frame (11, 12, 13, 14) and the other is attached to the frame (11, 12, 13). , 14) or to a window frame attached to the frame so that an intermediate space (90) remains between the inner frame (15, 16, 17, 18) and the outer frame (711, 721, 731, 741) characterized in that: the ventilation window (10) comprises at least one frame installation opening (32) made in the frame (11, 12, 13, 14), at least one mounting opening in the window frame (34, 36) made in the inner frame (15, 16, 17, 18) and at least one mounting opening in the window frame (38, 40) made in the outer arch (711, 721, 731, 741) for installation of a ventilation device (50). A ventilation window (10) according to claim 1, which ventilation window (10) also comprises a ventilation device (50) installed in place in the ventilation window (10), which ventilation device (50) is installed in at least one frame installation opening (32) and connected between at least one mounting opening in the window frame (38, 40) made in the outer frame (711, 721, 731, 741) and at least one mounting opening in the window frame (34, 36) made in the inner frame (15, 16, 17, 18). A ventilation window (10) according to claim 2, wherein the ventilation device (50) comprises an outer part (53) and an inner part (51) and a heat exchanger part (52) arranged therebetween, wherein the heat exchanger part (52) is arranged in mounting openings (32, 38, 40, 34, 36) and in the intermediate space (90) so that the heat exchanger part (50) remains in the space defined by the frame (11, 12, 13, 14) and the inner frame (15, 16, 17). , 18) and / or the outer arc (711, 721, 731, 741), which extends at most to the edge of a light aperture area (19). A ventilation window (10) according to claim 3, wherein - the outer part (53) comprises a window frame installation part (55) for air intake and a window frame installation part (54) for exhaust air and wherein said window frame installation parts (54, 55) are installed in at least one mounting opening in the window frame (38, 40) made in the outer frame (711, 721, 73, 74); and - the inner part (51) comprises a window frame installation part (22) for supply air and a window frame installation part (23) for exhaust air and where said window frame installation parts (22, 23) are installed in at least one mounting opening in the window frame (34, 36) made in the inner arch (15, 16, 17, 18). A ventilation window (10) according to claim 3 or 4, wherein the heat exchanger part (52) remains between the outer part (53) and the inner part (51) so that these together form a cross section in the form of the letter C or I according to the shape of the inner frame (15, 16, 17, 18) and / or the outer frame (711, 721, 731, 741). A ventilation window (10) according to any one of the preceding claims 2 to 5, wherein the ventilation device (50) is integrated in the frame (11, 12, 13, 14). A ventilation window (10) according to any one of the preceding claims 2 to 6, wherein the ventilation window (10) includes at least one control unit (408, 508, 320) for setting, selecting or adjusting the operating position of the ventilation device (50). A ventilation window (10) according to claim 7, wherein the control unit (408, 508, 320) can be remotely controlled, most preferably over a wireless connection (403, 405, 503) or an electrical network connection. A ventilation window (10) according to claim 7 or 8, wherein the ventilation window (10) comprises a fan (303B) in a supply air duct (303) and a fan (304B) in an exhaust air duct (304) and wherein the control unit (408, 508, 320) is configured to control both fans (303B, 304B) to operate at the selected power and at the selected intake / exhaust ratio. A ventilation window (10) according to claim 9, wherein the control unit (320) is configured to control both fans (303B, 304B) based on the pressure difference between outdoor air and indoor air, obtained from at least one pressure sensor or pressure difference sensor (318), for make the ventilation independent of the wind conditions. A ventilation window (10) according to claim 9 or 10, wherein the control unit (320) is configured to measure the flow resistance of the exhaust air duct (304) on the basis of a signal received from at least one pressure difference sensor (318) and where, when the control unit (320) detects that the flow resistance of the exhaust duct (304) has increased, the ventilation window (10) is configured to alarm and / or switch on a specific melting function. A ventilation window (10) according to any one of the preceding claims 9 to 11, wherein the ventilation device (50) has local sensors (314, 315, 316, 317, 318, 319) connected to the air quality and wherein the control unit (320) is configured to use at least one signal received from the sensors (314, 315, 316, 317, 318, 319) to control the fans (303B, 304B). A ventilation window (10) according to claim 12, wherein the sensor (317) comprises a humidity and / or carbon dioxide content sensor and wherein the control unit (320) is configured to, when the sensor (317) detects that humidity and / or carbon dioxide content exceeds the limit value, increase the effect of the ventilation device (50) until the actual content is less than the limit value or values. A ventilation window (10) according to claim 1, wherein the ventilation window (10) has at least one detachable blocking part where, after removal of the blocking part, the ventilation device (50) can be installed in the ventilation window (10) to provide the ventilation window (10) according to any one of claims 2 to 13 after the window is installed in place. A ventilation system (1900) in a building, apartment or room, which ventilation system (1900) comprises at least one ventilation window (10) according to any one of claims 7 to 13 and which is arranged as a window which can be controlled individually or together with others which a group. A ventilation system (1900) according to claim 15, wherein the ventilation system (1900) includes a plurality of ventilation windows (10) and wherein the ventilation windows (10) included in a group are arranged to operate under the control of a control unit (408, 508, 320) so that the ventilation of a building, apartment or room is carried out in whole or in part by means of the ventilation system (1900). A ventilation system (1900) according to claim 15 or 16, wherein the target level of the ventilation system (1900) is adjustable and wherein the ventilation system (1900) is configured to control the ventilation of individual ventilation windows (10) to reach the target level of the ventilation system (1900) through the the common ventilation effect of all or some of the ventilation windows (10) included in the ventilation system (1900). A ventilation system (1900) according to claim 17, wherein some of the ventilation windows (10) are sometimes used to remove only air from an apartment and some of the ventilation windows (10) are only used to take in fresh air into the apartment, or where all or at least some of the ventilation windows (10) are configured to control air in a building, apartment or room in a particular direction. A ventilation system (1900) according to any one of claims 15 to 18, which ventilation system (1900) also comprises at least one sensor for controlling the operation of the ventilation system and wherein the ventilation system is configured to increase or decrease ventilation when the actual ventilation is above or below the limit value. A ventilation system (1900) according to any one of claims 15 to 19, which ventilation system (1900) is configured to melt a frozen ventilation device (50) by stopping or slowing down the fan (303B) in its supply air duct (303) and compensating with by means of the other ventilation devices (50) belonging to the ventilation system (1900), most preferably by stopping or slowing down the fan (304B) in the exhaust duct (304) of another ventilation device. A ventilation system (1900) according to any one of claims 15 to 20, wherein the ventilation devices (50) or the ventilation windows (10) are configured to transmit data or exchange data to optimize the total ventilation in a building, apartment or room. A ventilation system (1900) according to claim 21, which ventilation system (1900) is configured to increase the strength of the exhaust air of the ventilation device (50) which measures the worst air quality and to increase the strength of the supply air of at least one other ventilation device (50) belonging to the system . A ventilation system (1900) according to claim 22, which ventilation system (1900) is configured to perform the raising / raising automatically. A ventilation system (1900) according to any one of claims 15 to 23, which ventilation system (1900) comprises a remote control, by means of which the strength and direction of the ventilation of the ventilation system (1900) can be configured. A ventilation system (1900) according to any one of claims 15 to 24, wherein the ventilation devices (50) include presets and / or control algorithms that can be updated, such as changing the number or type of ventilation devices (50), changing the surface size of the apartment, or ventilation control according to customer's wishes on the basis of a timer. A ventilation system (1900) according to any one of claims 15 to 25, wherein the ventilation devices (50) comprise a communication connection to central control or to other ventilation devices (50) and wherein at least some of the ventilation devices (50) are configured that, in case the communication connection is broken, switch to independent operation and operated on the basis of their own local measurements. A ventilation system (1900) according to any one of claims 15 to 26, wherein the control of the operation of the ventilation system (1900) takes place using the operating logic contained in individual ventilation devices (50) and which ventilation system (1900) is configured to, if an individual ventilation device (50) does not work, decentralized operation continues as a decentralized system consisting of the other ventilation devices (50) belonging to the system. A ventilation device (50) which is arranged for use in a ventilation window (10) according to any one of the preceding claims 1 to 14 and / or in a ventilation system according to any one of the preceding claims 15 to 27. A ventilation device (50) according to claim 28, which ventilation device (50) comprises an inner part (51), an outer part (53) and a body (52) between them, which body (52) includes a control unit (320) , a heat exchanger (306) and fans (303B, 304B). A method of manufacturing a ventilation device (50) according to claim 29 for ventilation windows (10) of different sizes, characterized in that the body (52) of the ventilation device (50) is manufactured in several sizes based on the size of the frame or light opening area (19). ) of the ventilation window (10), and an inner part and / or outer part (53) of the same size is used for frames and light opening areas (19) of different sizes.