EP4290151A1 - Wanddurchführung - Google Patents

Wanddurchführung Download PDF

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Publication number
EP4290151A1
EP4290151A1 EP23163849.5A EP23163849A EP4290151A1 EP 4290151 A1 EP4290151 A1 EP 4290151A1 EP 23163849 A EP23163849 A EP 23163849A EP 4290151 A1 EP4290151 A1 EP 4290151A1
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EP
European Patent Office
Prior art keywords
wall
chamber
channel
air
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23163849.5A
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English (en)
French (fr)
Inventor
Erik Albert Elisa Wilms
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Wilms NV
Original Assignee
Wilms NV
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Filing date
Publication date
Application filed by Wilms NV filed Critical Wilms NV
Publication of EP4290151A1 publication Critical patent/EP4290151A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
    • F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00—Ventilation
    • F24F2007/0025—Ventilation using vent ports in a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/245—Means for preventing or suppressing noise using resonance

Definitions

  • the invention relates to a wall passage, particularly a wall passage for an air displacing unit.
  • Air displacing units are used inter alia in ventilation systems which are configured to actively ventilate buildings.
  • DE20305801U1 describes a local ventilation system wherein the incoming and outgoing air flows via a sound-damping channel.
  • This sound-damping channel simultaneously forms the heat exchanger for exchanging heat between incoming and outgoing air. Building this solution into a wall in efficient manner is difficult due to the overall depth. It is almost impossible to finish the wall airtightly because the opening does not extend transversely through the wall.
  • the wall passage is secondarily provided to make the airflow travel a distance in a direction parallel to the wall.
  • This secondary flow direction does not contribute directly to the flow of the air through the wall, but does contribute to the reduction of sound.
  • the invention is here based on the insight that the way in which this secondary airflow is configured or formed determines the efficiency of the wall passage.
  • this secondary airflow is linear, parallel to the wall, the sound damping is minimal and therefore not optimal.
  • this secondary airflow is not linear but divided into multiple parts, each having a different direction parallel to the wall, and these multiple parts lie adjacently of each other in a direction transversely of the wall, either the overall depth needed for integration of the wall passage is great or the cross-sectional area of the channel is small.
  • a central flow axis of the airflow in the chamber preferably lies substantially wholly in a plane lying parallel to the wall.
  • the central flow axis of the airflow lies in a plane lying parallel to the wall. This has been found to be optimal when integrating such a wall passage because the overall depth is determined only by the dimensions of one air channel.
  • the flow resistance can further be minimized because this channel can be formed freely in the chamber.
  • a wide and/or high chamber can typically be provided at least partially in a wall in considerably simpler manner than a deep chamber.
  • the central flow axis of the airflow here preferably has a length greater than a linear distance between the air inlet and the air outlet, preferably at least 1.5 times greater, more preferably at least 2 times greater. This has been found to be optimal for the sound damping of the wall passage.
  • the substantially two-dimensional bend is preferably almost 180 degrees so that the segment of the channel extends substantially in a U-shape. It will be apparent here that the U-shape extends almost parallel to the wall. It has been found that this can be realized in simple manner and installed in optimal manner, while the sound damping is good.
  • the sound trap optionally further comprises at least one sound obstruction in the channel, which obstruction is configured to at least partially damp or reflect sound.
  • the sound obstruction improves the absorption and diffusion of sound waves in the channel further.
  • the sound obstruction more preferably extends at least partially in a zone of the channel. In this way the diffusion of sound waves is substantially further improved, particularly because more reflection of the sound in the channel is realized. It is noted that the sound obstruction will also absorb sound at least partially.
  • the sound obstruction extends in the transverse direction over at least 5 mm, more preferably over at least 10 mm.
  • the sound trap is preferably configured to be provided upstream of the air displacing unit.
  • the channel is more preferably configured to prevent sound from propagating from the air outlet to the air inlet.
  • the sound trap is preferably configured to be connected to an inner wall of the building. This allows both the ventilation unit and the sound trap to be integrated in the outer shell or cavity and the inner shell or inner wall of the building.
  • the sound trap preferably comprises a frame which is configured to mount the sound trap in the wall.
  • the chamber is more preferably connected to the frame at least partially via a hinge such that the chamber has an open state and a closed state. This allows maintenance to be performed. This further also allows said ventilation unit to be reached so that for instance functional elements, such as filters of the ventilation unit, can be replaced.
  • the sound trap preferably further comprises at least one first air filter in the channel.
  • the at least one first air filter is more preferably provided at the position of the air inlet. Air can be purified via the filter. Dirt and/or vermin can also be prevented from being sucked into the space along with the air.
  • An inner wall of the channel is preferably provided at least partially with a sound-absorbing layer.
  • the sound-absorbing layer is more preferably provided, at least at the position of the air outlet, with an inward-directed side of the first wall part. This improves the attenuation of the sound further.
  • the sound trap preferably further comprises a second chamber in line with and separate from the first chamber, which second chamber is provided to facilitate a second airflow through the wall between a second air inlet and a second air outlet.
  • the invention further provides a local ventilation unit connected to a wall passage as described above.
  • This ventilation unit comprises a heat exchanger and a housing.
  • the housing is configured to form a first channel for allowing air to flow from outside the building to inside, a second channel for allowing air to flow from inside the building to outside, and a heat exchanger provision configured for a heat exchange between an airflow in the first channel and an airflow in the second channel.
  • the local ventilation unit is connected to the wall passage such that the chamber of the wall passage forms an extension of at least one of the first and the second channel of the ventilation unit.
  • the housing is preferably formed by a housing assembly comprising a first housing part and a second housing part which are mutually connectable and shape-compatible.
  • the first housing part and the second housing part are configured to each form at least a portion of a first channel for allowing air to flow from outside the building to inside, a second channel for allowing air to flow from inside the building to outside, and a heat exchanger provision configured to receive the heat exchanger.
  • the local ventilation unit is connected to the wall passage such that the chamber of the sound trap is preferably positioned at the air outlet of the second channel of the ventilation unit.
  • Figure 1 shows a wall 1 of a building.
  • the figure is unusual in that it shows different parts of the figure cut along different planes.
  • This special representation allows an airflow to be shown in a direction transversely of the wall and in a direction parallel to the wall in a two-dimensional view.
  • To the left of the left-hand broken line, designated with arrow A the figure thus shows a section transversely of the wall.
  • the wall 1 is shown schematically and is in practice typically formed by an outer wall 3 and an inner wall 2.
  • a cavity 4 is typically provided between inner wall 2 and outer wall 3.
  • the cavity 4 is defined by a space between the inner wall and the outer wall, which space can be filled with air or with an insulating material.
  • a thermal barrier is hereby created between inner wall 2 and outer wall 3 so that energy can be retained in the building.
  • the outer wall 3 is defined as the outer shell of a building.
  • the inner wall 2 is defined as the elements forming an inner shell of a building, wherein the inner shell is thermally insulated from the outer shell.
  • the walls can be manufactured from different types of material, such as brick, wood, plasterwork, plastic cladding and so on.
  • Figure 1 further shows a ventilation unit 7 which is arranged in the cavity 4.
  • the ventilation unit 7 preferably forms part of a ventilation system and allows a forced controlled airflow from inside to outside and from outside to inside, through wall 1.
  • the ventilation system can be deemed a local ventilation system. This is because a plurality of such ventilation units 7 can be provided in a building, for instance in a plurality of rooms of the building, such as the kitchen, living room, bedroom and/or bathroom.
  • the operation of the local ventilation units is individually controllable.
  • the ventilation unit 7 is mounted in the cavity 4.
  • Ventilation unit 7 has an air displacing unit with an air supply side and an air discharge side.
  • the air supply side is connected to a space of the building, referred to hereinafter as the interior space O, via the inner wall 2.
  • the air discharge side is connected to the outside environment via the outer wall 3. It will be apparent to the skilled person that the air discharge side can be arranged anywhere in the outer wall, such as for instance the reveal of a window. It is illustrated in the figure that a hole can be formed in the outer wall 3. This is optional. The outer side of the outer wall can then be finished with a grating at the position of the hole.
  • FIG. 5 When reference is made in the invention to an airflow through a wall, it is preferably only the inner wall 3 that is understood to be the wall. This is also the most relevant place structurally to refer to a wall passage since modern construction is finished with a foil or film sheet material at the inner wall in order to give the building an airtight finish.
  • the wall passage then ensures that a controlled exchange of air into and out of the interior space can be provided.
  • An example of an air displacing unit is a fan. Air is thus extracted from the interior space O by discharging air from interior space O to the air supply side of the air displacing unit. This is designated in figure 1 with arrow L.
  • Figure 1 shows a wall passage with a sound trap 100 according to an exemplary embodiment.
  • the sound trap 100 is illustrated schematically and in section in order to show the operating principle.
  • the blank arrows L thus represent an airflow flowing through the wall passage and the sound trap 100. It will be apparent here that the airflow L travels through a bend (not shown in this figure) at the position of the broken lines so as to flow from a direction transversely of the wall to a direction parallel to the wall and vice versa.
  • Chamber 110 forms a channel 140 which forms at least one segment of the channel of the wall passage, which is configured to demarcate an airflow between the air inlet and the air outlet.
  • the channel 140 is thus configured to guide the air from air inlet 120 to air outlet 130.
  • the airflow is realized by the air displacing device which creates an underpressure by drawing air in at the position of air outlet 130, so that a pressure difference prevails between air inlet 120 and air outlet 130. This pressure difference realizes an airflow from air inlet 120 to air outlet 130.
  • the chamber 110 further comprises a baffle 150 which forms the chamber and which, owing to the presence in the chamber, also forms the channel 140.
  • the baffle is provided in chamber 110 so that a linear airflow P between chamber air inlet 120 and chamber air outlet 130 is prevented.
  • a linear airflow P is shown in figure 1 for the purpose of elucidation, but is not possible in practice.
  • Linear is understood to mean that the airflow is able to flow from chamber air inlet 120 to chamber air outlet 130 in one straight line, as would be the case if baffle 150 were not provided.
  • chamber air inlet 120 and chamber air outlet 130 lie at the same height and baffle 150 lies between chamber air inlet 120 and chamber air outlet 130.
  • the baffle 150 forces the airflow to travel through a bend which lies parallel to the wall.
  • the baffle forces the airflow to flow around baffle 150 and the baffle also forms an obstacle to sound produced by the air displacing unit.
  • a sight line connection between chamber air inlet 120 and chamber air outlet 130 is broken.
  • sound produced by the air displacing unit would be able to propagate from chamber air outlet 130 to chamber air inlet 120 in a straight line without any appreciable attenuation thereof.
  • baffle 150 forms an obstacle to the sound, the sound trap damps the direct propagation of the sound waves.
  • the baffle 150 allows the sound waves produced by the air displacing device to be absorbed to a considerable extent in the chamber 110, for instance at the position of the chamber wall bounding channel 140. Baffle 150 itself will further also absorb sound. Baffle 150 allows diffusion of sound in that the sound waves are reflected at the position of the chamber wall of the chamber bounding the channel. Baffle 150 itself will also reflect, diffuse and/or absorb the sound waves. Because baffle 150 on one hand absorbs sound waves and on the other hand diffuses them, the sound waves are attenuated and the person present in the interior space will experience no or less noise nuisance.
  • the chamber 110 and the baffle 150 can be manufactured from the same material, for instance wood or plastic.
  • An inward-directed wall of chamber 110, for instance a chamber wall bounding channel 140, and baffle 150 can be provided at least partially with a sound-absorbing layer. This improves the attenuation of the sound further.
  • to attenuate” or “attenuation” are used synonymously with terms such as “to reduce”, “to weaken”, “to alleviate” or “to damp”.
  • the terms refer to acoustic damping as a measure of the energy loss of sound propagation in media, in the current context for instance air.
  • the sound-absorbing layer is preferably provided on at least a portion of the walls in the chamber 110 bounding the channel 140.
  • a sound-absorbing layer can be made of a porous or soft material such as textile or foam.
  • the texture and structure of the surface of the chamber wall and the surface of baffle 150 also affect the acoustic attenuation. A crease in the surface or woven or other non-flat texture can thus further attenuate the sound wave in that the sound wave is reflected in several reflection directions. Texture and material types can also be combined in order to further improve the attenuation.
  • the sound-absorbing layer can be arranged selectively. The sound-absorbing layer can thus be arranged only at the position of the chamber air outlet 130, or over the whole surface of an inward-directed side of the channel.
  • the sound-absorbing layer can further be arranged in several portions, which are each made individually from a determined material.
  • the preferred embodiment of the sound trap 100 shown in figure 1 comprises a baffle 150 which extends downward from an upper wall.
  • Baffle 150 is mounted on the upper wall at the top, or baffle 150 lies substantially against the upper wall in order to substantially wholly prevent an airflow between the baffle 150 and the upper wall.
  • Baffle 150 extends up to a predetermined distance from a lower wall of chamber 110. There is therefore an opening between a lower outer end of baffle 150 and the lower wall 112 of chamber 110.
  • a U-shaped air channel is formed, wherein the U-shape runs parallel to the inner wall and wherein the air channel has a bend of substantially 180 degrees around an underside of baffle 150 at the bottom of the U-shape.
  • the sound trap 100 has a first channel part which is oriented downward and extends from chamber air inlet 120 to the lower outer end of baffle 150, a second channel part which is oriented upward and extends from the lower outer end of baffle 150 to the chamber air outlet 130, and a third channel part in the form of a bend extending between the lower outer end of baffle 150 and the lower wall 112 of the chamber.
  • baffle 150 is arranged in accordance with the position of air inlet 120 and air outlet 130. When the position of the chamber air inlet and the chamber air outlet change, it will be apparent that the baffle 150 must be adjusted accordingly.
  • the channel parts have substantially the same cross-sectional area, although this is not essential.
  • the first channel part can thus be wider than the second channel part, and vice versa. Obstructions such as sound obstructions and/or guides can also be provided in the chamber, as will be further elucidated below.
  • Sound trap 100 secondarily makes the airflow travel a distance in a direction parallel to the wall.
  • a sound trap 100 with a wholly analogous operation can have a different orientation, wherein the baffle extends from a first wall to a position at a distance from a second wall.
  • Figure 1 further shows that a central flow axis of the airflow through the channel has a length greater than a linear distance between air inlet 120 and air outlet 130, preferably at least 1.5 times greater, more preferably at least 2 times greater.
  • the central flow axis is illustrated in figure 1 by the blank arrows designated with reference letter L.
  • the central flow axis of the airflow is a fictional axis which runs substantially through the centre of channel 140. Because the central flow axis has a length greater than the linear distance between air inlet 120 and air outlet 130, the sound trap attenuates sound waves in improved manner. Sound waves with a lower frequency, for instance 250 Hertz (Hz) or lower, are particularly attenuated in improved manner.
  • Hz Hertz
  • Figure 2A shows that the chamber air outlet 130 is provided in a first wall part 114.
  • This first wall part 114 is situated on the side of the cavity and preferably lies in a plane parallel to the inner wall.
  • the chamber air outlet can be positioned at the height of the chamber air inlet but on another side of baffle 150, this in order to prevent the airflow from being able to flow from the chamber air inlet to the chamber air outlet in a straight line.
  • the first wall part (not shown in figures 2A, 2B and 2C ) is preferably provided to lie opposite the chamber air outlet 130. In this way sound propagating through the chamber air outlet will thus hit the first wall part (not shown) almost immediately.
  • Figure 2B shows an example of the sound trap 100 with at least one sound obstruction 161, 162 in the channel, which obstruction 161, 162 is configured to at least partially damp or reflect sound. This improves the absorption and diffusion of sound waves in the channel further.
  • Figure 2B shows that the sound trap 100 can be realized with two or more sound obstructions 161, 162. An example is thus shown with two sound obstructions 161, 162.
  • a first sound obstruction 161 is provided at an outer end of baffle 150. It will be apparent to the skilled person that the sound obstruction 161 can also be situated at a different location in the channel, and can even be situated even at multiple locations. In this way the diffusion of sound waves is substantially further improved, particularly because more reflection of the sound in channel 140 takes place.
  • Figure 2C also shows a further example of a sound trap 100.
  • a guide 170 is provided to divide the channel 140 into at least two sub-channels 141, 142 at the position of the bend, these sub-channels running parallel and defining a different length between the chamber air inlet 120 and the chamber air outlet 130.
  • the guide 170 can be provided with a sound-absorbing textile, but guide 170 can also be manufactured from a hard material.
  • Figure 3 shows a perspective view of a further preferred embodiment of sound trap 100.
  • the figure shows the sound trap in a preferred embodiment, wherein the sound trap is functionally connected to a local ventilation unit 7 as will be further described in figure 5 .
  • Figure 3 further shows a reveal finish 13.
  • a wall passage according to the invention is provided to allow air to flow through the inner wall between the interior space on one side and the ventilation unit in the cavity wall on the other.
  • Figure 3 shows the sound trap 100 in an open state.
  • Sound trap 100 is constructed with a fixed portion or frame 180 which can be incorporated at least partially in an inner wall.
  • Frame 180 is connected via hinges 190 to a door part (110, 210). When this door part is closed by rotation of the door part toward frame 180, the chamber with the channel 140 demarcating the airflow is formed.
  • Sound trap 100 is provided with a door part with a first chamber 110 and a second chamber 210.
  • the first chamber 110 is a chamber as already described at length above.
  • Figure 3 further shows the second wall part 115 of chamber 110.
  • the side walls 113, upper wall 111 and lower wall 112 are provided fixedly on the second wall part 115 and thus form the door part 110, 210.
  • the skilled person will appreciate that this is just one embodiment, and that these walls can also be connected fixedly to the first wall part 114 such that the door is plate-like in its simplest form.
  • the wall of the building is not shown in order to illustrate that the wall passage can comprise a frame 180.
  • the frame 180 is configured to mount the sound trap in the wall.
  • Frame 180 can here be provided such that at least one of the walls of the chamber is formed by the frame 180.
  • the first wall part 114 of the chamber is formed by the frame 180.
  • Frame 180 can also be provided to be functionally connected to a ventilation unit 7 in the cavity.
  • Frame 180 allows sound trap 100 to be mounted robustly in the wall.
  • the frame thus for instance allows the sound trap 100 to be mounted at least partially pivotally relative to the wall, preferably relative to the frame 180.
  • a hinge 190 can be provided between frame 180 and several walls of sound trap 100. In this way a door part of the sound trap is pivotable between an open position and a closed position.
  • Frame 180 preferably takes the form of a tray with a rear wall 114, which rear wall is placeable substantially parallel to the inner wall 2, and a plurality of upright walls with dimensions such that the tray has a substantially constant depth.
  • the upright walls can be incorporated in an inner wall such that the edges of the upright walls lie in the plane of the inner wall.
  • Provided in the rear wall is at least one opening 130 for allowing an airflow through inner wall 2.
  • Sound trap 100 formed by a chamber, is formed such that it can be received substantially wholly in frame 180. When the outer wall of the chamber lies in line with the plane of the inner wall, a whole with an aesthetically pleasing finish is created.
  • a space can be left here between at least a portion of walls 111, 113 and/or 112 and upright walls of frame 180 so that a groove or niche forms at the position of the surface of the inner wall. Air can flow into and out of the sound trap via this groove or niche, as further explained below.
  • This paragraph describes a wall passage which is incorporated substantially wholly in an inner wall. It will be apparent to the skilled person that a wall passage can also be incorporated only partially, and that at least some of the components can protrude from the surface of the inner wall.
  • Figure 3 shows sound trap 100 in an open position.
  • the second wall part 115 functions as cover and the edges of the walls 113, 111, 112, 113 as seal between the first wall part 114 and the second wall part 115 so as to thus form the channel 140.
  • the first wall part 114 is formed by the rear wall of frame 180. Owing to hinge 190, the chamber is thus always accessible, for instance for carrying out maintenance. This further also allows said ventilation unit to be reached so that for instance filters or functional elements, such as the air displacing unit, of the ventilation unit can be replaced, hardware and/or software updates can be performed, and so on.
  • first wall part 114 and second wall part 115 lie opposite and at a distance from the chamber air outlet 130.
  • the distance between first wall part 114 and second wall part 115 corresponds with a height of the channel and with the height of the wall parts 113, 112, 111, as well as with the height of baffle 150.
  • This height is at least 2 cm, preferably at least 4 cm, more preferably at least 6 cm, most preferably at least 8 cm, and is a maximum of 18 cm, preferably a maximum of 16 cm, more preferably a maximum of 14 cm and most preferably a maximum of 12 cm, and is for instance about 10 cm.
  • the sound trap 100 is substantially beam-shaped.
  • Upper wall 111, lower wall 112 and the two side walls 113 have substantially the same width here, for instance 10 cm. It will be apparent that the width of the walls 111, 112 and 113 is the dimension transversely of the wall. Compared to upper wall 111 and lower wall 112, the two side walls 113 have a greater length, for instance 75 cm compared to 40 cm. Owing to the construction of sound trap 100, the width of the walls 111, 112, 113 is substantially equal to the width of the channel 140 through which the air can flow. The airflow will hereby experience only a minimal resistance compared to other passages in which a considerable narrowing of the channel is provided. The specific construction as described in this text allows an air channel without any appreciable narrowed portions to be formed, so that an air displacing unit such as a fan need not work any harder than necessary.
  • the sound trap 100 shown in figure 3 comprises two air inlets 120. These air inlets are preferably provided with an air filter.
  • the air inlets preferably have substantially the same dimensions. This allows the filters to be standardized on the basis of dimensions so that variations in replacement parts remain limited.
  • the filters prevent dust, dirt and vermin from being able to enter channel 140.
  • the same filters with the same dimensions can preferably also be used as outlet from the further second chamber 210 discussed below.
  • the wall passage can comprise a second chamber 210 which forms part of a second wall passage for facilitating an opposite airflow through the wall. It is not essential for second chamber 210 to be provided with a baffle, because the sound which is produced is already attenuated partially yet considerably in the ventilation unit itself. Alternatively, second chamber 210 is also provided with a sound trap as described above. Further alternative embodiments wherein only the lower chamber is provided with a sound trap are also possible.
  • Figure 4 shows a schematic view of a wall passage with a sound trap 100 which is connected to a local ventilation unit 7. Similar to figure 1 , the figure is unusual in that it shows different parts of the figure cut along different planes. This special representation allows an airflow to be shown in a direction transversely of the wall and in a direction parallel to the wall in a two-dimensional view. To the left of the left-hand vertical broken line, designated with arrow A, figure 4 thus shows a section transversely of the wall. Between the vertical broken lines, designated with arrow B, a section parallel to the wall is shown, and to the right of the right-hand vertical broken line a section transversely of the wall is shown. Sound trap 100 and local ventilation unit 7 are illustrated schematically and in section in order to show the operating principle.
  • Sound trap 100 comprises a first chamber 110 and a second chamber 210.
  • the first and second chamber 110, 210 have already been described at length above, in figure 4 the same or similar elements are designated with the same reference numerals as in figures 1 , 2A , 2B , 2C and 3 .
  • the blank arrows L further represent an airflow flowing through the wall passage and the sound trap 100.
  • Figure 4 shows that a local ventilation unit 7 is connected to a wall passage comprising the sound trap 100 as described above.
  • the local ventilation unit 7 comprises a heat exchanger (not shown) and a housing.
  • the housing is configured to provide a first channel 20 for allowing air to flow from outside the building to inside, a second channel 30 for allowing air to flow from inside the building to outside, and a heat exchanger provision configured for a heat exchange between an airflow in the first channel 20 and an airflow in the second channel 30.
  • the first channel of the local ventilation unit is also referred to as a first ventilation channel.
  • the second channel of the local ventilation unit is also referred to as a second ventilation channel.
  • first channel 20 extends between a suction opening 21 and an outlet opening 22 of first channel 20.
  • Second channel 30 further extends between a suction opening 31 and an outlet opening 32.
  • Figure 4 further shows that the local ventilation unit 7 is connected to the wall passage such that the chamber 110 of the wall passage forms an extension of at least one of the first and the second channel of the ventilation unit.
  • Suction opening 31 of second channel 30 is thus preferably connected to the air outlet 130 of the first chamber and outlet opening 22 of first channel 20 is preferably connected to the air inlet 220 of the second chamber.
  • first chamber 110 forms an extension of second channel 30, and the second chamber forms an extension of first channel 20.
  • an air outlet 230 is provided in second chamber 210. It is preferred for the local ventilation unit to be connected to the wall passage such that the chamber 110 of sound trap 100 is positioned at the position of the air inlet 31 of the second channel 30 of ventilation unit 7.
  • window profiles with which windows are constructed with a thermal barrier such that the profiles comprise an outer part and an inner part, wherein the outer part is configured to lie on the outside of the building and the inner part is configured to lie on the inner side of the building.
  • Such window profiles are then mounted either with their outer part against outer wall 3 or with their inner part against inner wall 2.
  • the thermal barrier provided between outer wall 3 and inner wall 2 can hereby be extended to the window.
  • the thermal barrier can in this way take a continuous form so that cold bridges facilitating energy exchange from outside to inside the building, and vice versa, do not occur.
  • a so-called reveal is also formed.
  • the reveal is defined as a straight, chamfered or profiled inner side of a window opening, gate opening or arch opening, which inner side preferably lies transversely or substantially transversely of the wall.
  • the reveal is preferably always perpendicular to the wall.
  • the reveal shows the thickness of inner wall 2, the thickness of cavity 4 and the thickness of outer wall 3.
  • Figure 5 shows a portion of the upright reveal and a portion of the upper reveal of a window opening.
  • FIG. 5 further shows a ventilation unit 7.
  • the ventilation unit preferably forms part of a ventilation system and allows a forced controlled airflow from inside to outside and from outside to inside through wall 1.
  • a plurality of such ventilation units can be placed in a plurality of respective rooms of a building in order to together form the ventilation system of the building. Because each ventilation unit of the ventilation system operates individually, the ventilation system can be explained in this description by describing the operation of one ventilation unit. It will be apparent here that, while a plurality of ventilation units can operate independently, the skilled person can couple them operationally in order to obtain a predetermined operational interaction between the different ventilation units in the ventilation system.
  • the ventilation unit of the ventilation system is constructed with a casing 5 and one or more modules which are provided with a heat exchanger for energy exchange between the inflowing and outflowing air.
  • the ventilation system can be deemed a local ventilation system. This is because a plurality of such ventilation units 7 can be provided in a building, for instance at a plurality of window openings in a plurality of rooms of the building, the operation of which is controllable separately of each other.
  • Casing 5 has a second side 10 configured to lie parallel to the wall.
  • the second side 10 has a plurality of openings 35' and 37', further elucidated below.
  • Second side 10 preferably lies against the inner wall 2 when the window is mounted in or at the inner wall, and preferably lies against the outer wall when the window is mounted in or at the outer wall.
  • the wall passage according to the invention is provided to be connected to the openings 35' and 37' so as to allow air to flow through the wall in question, between the ventilation unit and the space.
  • one of the first side and second side will in each case face outward and another of the first side and second side will face inward. It has been discussed at length above that inner wall 2 can be provided with a passage when the second side 5 lies against the inner wall 2.
  • Casing 5 further has a third side 11 which preferably forms the bottom side of casing 5.
  • the third side 11 has a draining opening 12 for discharging condensation and other water that has entered casing 5.
  • Figure 5 shows schematically one or more functional modules 6 of a ventilation unit 7.
  • the functional modules 6 can be incorporated in casing 5 via the opening 9 in first side 8.
  • the functional modules 6 can also be dismantled from casing 5 via the opening 9 in first side 8.
  • figure 5 shows one functional module comprising all functions.
  • the functional modules 6 preferably comprise a first housing part and the second housing part with therein one or more of the sensors, ventilators and heat exchanger.
  • Casing 5 is for this purpose formed with dimensions corresponding with a mounted assembly of first housing part and second housing part, such that in mounted state the housing parts can be installed in and uninstalled from the casing via first side 8. In mounted state the first site 8 of casing 5 will here substantially coincide with the above described first side A of the housing assembly.
  • Ventilation unit 7 further optionally comprises a fifth opening 36 which is preferably formed in the same side as second opening 35 and third opening 37.
  • This fifth opening 36 is optionally positioned (not shown) at the location of a filter for filtering the inflowing outside air.
  • An advantage hereof is that this filter is accessible via the fifth opening 36.
  • Fifth opening 36 is preferably positioned between second opening 35 and third opening 37.
  • all filters present in ventilation unit 7, more specifically the filter for filtering the air flowing from inside to outside and the filter provided for filtering the air flowing from outside to inside can be replaced via inner wall 2.
  • the filter preferably comprises a carbon filter, more preferably an active carbon filter, which cleans incoming air. This makes maintenance of ventilation unit 7 extremely simple.
  • the housing assembly is preferably also formed from heat-insulating material, it will also be possible to use the space in the inner wall which is filled up by zone 17' in figure 6 , this without any appreciable heat-insulating effect, to provide the above described sound trap 100.
  • the piece of inner wall 2', and optionally also a part of the zone 17' can thus be replaced integrally by the frame 180 with sound trap 100 as shown in figure 3 , or by a variant thereof, in order to further optimize the throughfeed for air through inner wall 2.
  • the advantage of working with a wall passage, wherein a piece of wall is effectively provided which lies between the outlet openings in the space on one side and the ventilation unit outside the space on the other, relates to airtight finishing of the space.
  • this wall can be provided with an airtight and damp-proof and/or breathable foil or film sheet material, which greatly improves the energy performance of the space.
  • a passage is then provided through this wall in order to supply and/or discharge air in controlled manner.
EP23163849.5A 2022-06-07 2023-03-23 Wanddurchführung Pending EP4290151A1 (de)

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BE20225441A BE1030595B1 (nl) 2022-06-07 2022-06-07 Wanddoorvoer

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142432A (en) * 1981-08-10 1982-09-03 Naka Tech Lab Sound-shielding cylinder for use in vent-port
DE19623708C1 (de) * 1996-06-14 1997-12-11 Maico Elektroapparate Lüftungseinrichtung
WO1998040598A1 (en) * 1997-03-11 1998-09-17 Nemcek Milan Opening filling with special adjustment providing simultaneous ventilation and sound damping
DE20305801U1 (de) 2003-04-08 2003-07-17 Ltg Ag Dezentrales Lüftungs- oder Klimagerät
WO2009071963A1 (en) * 2007-12-04 2009-06-11 Eur.Ex S.R.L. Silenced air intake for ventilation ducts, silencer for the air intake and method of operation of the air intake and silencer
BE1024294A1 (nl) 2016-06-14 2018-01-16 Erik Wilms Ventilatie-unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142432A (en) * 1981-08-10 1982-09-03 Naka Tech Lab Sound-shielding cylinder for use in vent-port
DE19623708C1 (de) * 1996-06-14 1997-12-11 Maico Elektroapparate Lüftungseinrichtung
WO1998040598A1 (en) * 1997-03-11 1998-09-17 Nemcek Milan Opening filling with special adjustment providing simultaneous ventilation and sound damping
DE20305801U1 (de) 2003-04-08 2003-07-17 Ltg Ag Dezentrales Lüftungs- oder Klimagerät
WO2009071963A1 (en) * 2007-12-04 2009-06-11 Eur.Ex S.R.L. Silenced air intake for ventilation ducts, silencer for the air intake and method of operation of the air intake and silencer
BE1024294A1 (nl) 2016-06-14 2018-01-16 Erik Wilms Ventilatie-unit

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BE1030595B1 (nl) 2024-01-15

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