WO2020165139A1 - Passage d'air destiné à la ventilation et à la thermorégulation d'une pièce d'un bâtiment - Google Patents

Passage d'air destiné à la ventilation et à la thermorégulation d'une pièce d'un bâtiment Download PDF

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Publication number
WO2020165139A1
WO2020165139A1 PCT/EP2020/053421 EP2020053421W WO2020165139A1 WO 2020165139 A1 WO2020165139 A1 WO 2020165139A1 EP 2020053421 W EP2020053421 W EP 2020053421W WO 2020165139 A1 WO2020165139 A1 WO 2020165139A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
space
housing
section
air outlet
Prior art date
Application number
PCT/EP2020/053421
Other languages
German (de)
English (en)
Inventor
Detlef Makulla
Dietmar Rossbruch
Original Assignee
Krantz Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Krantz Gmbh filed Critical Krantz Gmbh
Publication of WO2020165139A1 publication Critical patent/WO2020165139A1/fr

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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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0608—Perforated ducts

Definitions

  • the invention relates to an air passage for ventilation and temperature control of a room of a building, comprising a) a connector for connection to an air supply system, b) a housing which delimits an interior space, the interior space having a distribution space, a flow space and a
  • the distribution space has an air inlet surface through which supply air can be introduced into the distribution space in an inlet flow direction and which is formed by the nozzle and the housing is furthermore provided with walls which are at least partially provided with perforations, the perforations a
  • the outlet flow direction can be introduced into the space to be ventilated, c) a separating device arranged in the interior of the housing, which separates the air outlet space from the flow-through space, which is at least partially delimited by the separating device and has a first connection cross-section to the distribution space, the air outlet space through the Separating device and the air outlet surface is limited and a second connection cross-section to the
  • an adjusting device arranged in the interior of the housing for changing the outlet flow direction, wherein by means of the
  • Adjusting device, the first connection cross-section and / or the second connection cross-section, in particular in terms of its size, can be changed, an adjusting member of the adjusting device being different from the first
  • Connection cross-section can be moved into the second connection cross-section.
  • Heating mode to introduce the warm air into the depth of the room.
  • a switchover flap with which the supply air can either be discharged horizontally to the outside through a perforated distribution cone in the form of a textile sack and then through a perforated outer skin in a central area of the air outlet, or - in a different position of the switchover flap - into one guided rear bypass channel and can also be discharged from there approximately horizontally from the air outlet via a lower chamber in a lower region of the air outlet.
  • the air outlet surface when there is a flow through the distribution cone and the air outlet surface when there is a flow through the bypass duct are separated from one another and are arranged one above the other.
  • the bypass channel the
  • Air outlet area small so that the small cross-sectional area of the flow results in high flow velocities, which on the one hand cause a high pressure drop and thus energy consumption and on the other hand also cause noise problems and
  • DE 197 53 888 C1 discloses a displacement air outlet with a housing which has a connecting piece and a plurality of air outlet openings.
  • the housing is divided into a distributor chamber and a rectifier chamber by a perforated plate arranged in it.
  • a section of the inner perforated plate is pivotably mounted in the previously known air outlet and can be removed in the course of a pivoting movement from a plane of separation between the distributor chamber and the rectifier chamber.
  • the distribution space of the known outlet that forms the actual interior space is always from the Supply air flows through and cannot be shut off by means of the adjusting element designed as a swivel flap. With the adjustment element, only the interruption or release of an unthrottled flow to the rectifier chamber is possible.
  • DE 295 02 396 U1 describes an air passage for regulating the temperature of a room, which is composed of a cylindrical housing and a rectifier arranged therein. While a first end section of the housing is provided with a connector for connection to an air supply system, the other end section of the housing is closed by a deflection hood.
  • the air outlet also has a distribution device arranged on the inside in the form of swivel blades, which divides the air outlet into a distribution space and an air outlet space.
  • the section of the housing surrounding the distribution space is provided with perforations.
  • Housing which delimits the air outlet space, is designed to be closed.
  • the air introduced through the nozzle is independent of the position of the swivel blades in the
  • Air outlet space produced so that the air is introduced from the distribution space into the air outlet space, in which it is deflected at the deflection hood and finally released into the room.
  • the swivel blades are closed, the air is redirected to the same.
  • the air passage has an orifice plate arranged in the housing and a first adjusting element which is arranged concentrically around the separating device.
  • the latter is designed in the form of two mutually rotatable cutting disks, the first cutting disk having perforations which can be opened or closed by rotating the second cutting disk.
  • the air passage furthermore has a second adjusting element in the form of a flap, which is arranged in the separating device.
  • the bottom surface of the housing can be opened in order to further change the outlet flow direction of the fresh air supplied.
  • the outlet flow direction of the air is regulated by two adjusting elements, which results in increased regulation effort.
  • the air flows with it a higher air outlet velocity compared to that of a displacement air outlet into the room, whereby no displacement flow can be achieved. Rather, it creates a quick one
  • the above object is achieved according to the invention in that the separating device is air-permeable.
  • the air permeability of the separating device makes it possible for the air to flow into the air outlet area, from where the air can then pass through the same air outlet area into the room, even in the event that the supply air is wholly or partially passed through the flow area , as in the case in which the air from the distribution space is led directly into the air outlet space.
  • the air outlet area is thus "used" particularly well, which, regardless of the position in which the adjusting element is located, means that a large air outlet area is available for the incoming air. If different air outlet areas were required for a flow through the flow space on the one hand and for a flow through the air outlet space on the other hand, the air passage would be larger overall or only a partial area would be available for each of the two separate air outlet areas.
  • Adjusting element takes place. When moving the adjusting element into the first
  • the connecting cross-section prevents or at least reduces the entry of the supplied air into the flow space.
  • the inflowing air is directed from the distribution room into the air outlet area and from there it reaches the room in the building to be tempered. In this first end or closed position, the
  • the air is accordingly introduced into the room with an impulse directed towards the floor of the room and leaves the air outlet surface obliquely downwards, ie at an acute angle to the air outlet surface.
  • the distribution space is separated from the air outlet space, so that the fresh air supplied flows into the flow space and from there into the air outlet space, from which it finally reaches the room.
  • the air outlet direction is preferably aligned almost parallel to the floor of the room (ie horizontally), ie
  • the outlet flow direction of the supply air can thus be varied via a single adjusting element, so that any further adjusting elements in the housing of the air passage are unnecessary. This leads to an adjustment of the
  • the outlet flow direction to the temperature of the air supplied takes place particularly easily and quickly. Material costs and manufacturing costs can also be saved as a result.
  • a preferred embodiment of the invention provides that the first connection cross-section and / or the second connection cross-section can be completely closed by means of the adjusting element.
  • a position of the adjusting element can be selected which is particularly suitable for the respective requirements for the temperature control of the room. It is conceivable that for the heating case in which the temperature of the inflowing air exceeds room temperature, a first closed position of the adjusting element is selected in which the first connection cross-section is completely closed.
  • the air outlet direction of the exiting supply air is directed towards the floor of the room. This prevents the warm air from rising directly to the ceiling of the room due to its low density and preventing the room from heating up evenly. Rather, the warm air is drawn from the bottom of the
  • the air outlet direction of the supply air should not be directed towards the floor of the room, since such an introduction of cold fresh air is perceived as particularly unpleasant by the people in the room. Rather, in the case of cooling, a second closed position of the adjusting element can be selected, in which the adjusting element completely closes the second connecting cross-section. As a result, the supplied air is directed towards the ceiling of the room. When the cold air drops as a result of the absorption of internal heat loads, the room is evenly cooled. Consequently there is no sole cooling of the floor area and the appearance of drafts.
  • connection cross-sections can be completely closed means that the air supplied can only flow into one of the two air spaces. Consequently, the connection cross-sections can be completely closed
  • the outlet flow direction can be adapted to the respective requirements without an additional directional component of the air, which results from flowing through the respective other air space, inadvertently influencing the outlet flow direction.
  • Separating device is air-permeable, the separating device is preferably provided with perforations.
  • supply air which is passed through the distribution space into the flow space, can be given indirectly via the separating device into the air outlet space and thus into the space to be ventilated.
  • the separating device also rectifies the air supplied.
  • the adjusting element can be displaced into at least one intermediate position in which a supply air flow flowing through the distribution chamber can be divided so that a first part flows into the flow chamber and a second part flows into the air outlet chamber.
  • the adjustment element With a view to adapting the outlet flow direction to the temperature of the fresh air to be supplied, the adjustment element must be converted into at least one
  • the adjustment element can preferably be displaced in its alignment in such a way that a stepless adaptation of the outlet flow direction to the temperature of the supply air is made possible. It is therefore conceivable that the supply air has a temperature which requires an air outlet direction that is not given by the two closed positions of the adjusting element.
  • the alignment of the adjusting element in an intermediate position which is located, for example, in the middle between the two closed positions, can then be used to obtain the required air outlet direction.
  • An advantageous embodiment of the invention provides that a wall of the distribution space is partially air-permeable, the wall preferably being partially provided with perforations. This allows part of the air supplied to the distribution space to flow directly into the space. Depending on the position of the adjusting element, the deflection of the air on the surface of the same results in an impulse of the air directed against the inlet flow direction, which has an advantageous effect on the desired horizontal or even slightly upward outlet flow direction, especially in the case of cooling. According to an advantageous development it is provided that a bottom surface of the housing is completely closed.
  • Inlet flow direction given in the direction of the bottom surface of the housing.
  • a closed bottom surface is particularly suitable insofar as the inflowing air is deflected on the bottom surface of the housing and thus generates an impulse directed against the bottom surface, with which the air flows into the air outlet space.
  • Such a pulse of the inflowing air is particularly advantageous for the case of cooling, since the cold air is thus directed into higher areas of the room and not directly as a lake of cold air, which is particularly unsuitable in terms of the comfort of the people in the room is introduced into the floor area of the room.
  • a preferred embodiment of the invention provides that the adjusting device is designed as a pivotable flap, the flap preferably extending from one wall of the housing to an opposite wall of the housing and an axis of rotation of the flap preferably at an end facing away from the socket
  • Flap leaf of the flap is arranged. Both of the aforementioned walls of the housing are preferably aligned perpendicular to a plane of the air outlet surface.
  • a pivotable flap is that it is particularly easy to handle and manufacture.
  • other designs are also conceivable.
  • the flap extends between two opposing walls in order, if necessary, to completely separate the distribution space from the
  • a cross section of the housing running perpendicular to a longitudinal axis of the separating device is rectangular, with a wall forming an edge of the cross section preferably being provided with perforations.
  • the formation of a rectangular cross section of the housing can Adjusting device can be designed simply in the form of a rectangular flap which extends between two opposite walls of the housing.
  • the adjusting device is attached to the separating device and / or the separating device extends from one wall of the housing to one
  • the adjusting device By attaching the adjusting device to the separating device, it can be ensured that the distribution space can be completely separated from the other two air spaces by the adjusting device.
  • the above fastening obviates the need for additional means to hold the adjustment device in the housing of the air passage.
  • the adjusting device extends from a wall of the
  • Housing extends to an opposite wall of the housing.
  • the flap leaf can be brought into contact with at least one wall of the housing, preferably with two opposite walls of the housing.
  • Such a configuration is particularly advantageous for the air outlet space, since no further means that separate the air space are required.
  • the end face of the flap leaf can preferably be brought into contact with the perforated wall of the housing, which forms the air outlet surface.
  • the face is correspondingly with the
  • the air outlet surface of the air outlet space can also be flowed through by the air passing through the flow space. This leads to a particularly good utilization of the air outlet area and thus to a small overall size of the air passage according to the invention.
  • an embodiment according to the invention also consists in providing a deflection space arranged below the separating device, which is in flow connection with both the flow space and the air outlet space and from which air can be discharged into the space through the air outlet surface.
  • the deflection space makes it possible, in particular, with an initially essentially vertical flow through the
  • Air passage at the lower end, ie in particular the bottom, of the air passage Make flow deflection and in this way to ensure an air outlet in a horizontal or even obliquely upward direction.
  • Figure 1 a front view of an air passage according to the invention
  • FIG. 2 a vertical section through the air passage according to the invention from FIG. 1,
  • FIG. 3 like FIG. 1, but with a different position of the distribution device and
  • FIG. 4 a vertical section through a further air passage according to the invention.
  • Figure 1 shows a front view of an air passage 1 according to the invention for ventilation and temperature control set up on the floor 2 of a room.
  • the air passage 1 comprises a cuboid housing 3 with a length L of approximately 70 cm to 150 cm, a height H of approximately 50 cm to 200 cm and a width B of approximately 30 cm to 50 cm.
  • the air passage 1 is provided with a connector 5 arranged on the upper side 4 of the housing 3 for connecting the air passage 1 to an air supply system not shown in FIG.
  • a cross section perpendicular to a front side 6 of the connector 5 forms an air inlet surface 7 of a distribution space 8, which is described in more detail in connection with FIG.
  • supply air is introduced in an inlet flow direction 9, which is shown by the arrow, almost perpendicular to the air inlet surface 7 via the nozzle 5 into the housing 3 of the air outlet 1 and discharged via the front 6 into the room of the building.
  • the front side 6 of the housing 3 is provided with perforations 10 evenly distributed over the surface, which together form the air outlet surface 11.
  • FIG. 2 the air passage 1 according to the invention from FIG. 1 is shown in a vertical section perpendicular to the air outlet surface 11 of the housing 3.
  • a separating device 13 in the form of a rectangular, perforated sheet metal is arranged in the center of an interior space 12 of the housing 3.
  • the length of the separating device 13 corresponds to the length L of the housing 3, so that the separating device 13 is located on two opposite side surfaces 14 of the ok
  • Housing 3 can be attached by suitable means, such as screws.
  • the height H ‘of the separating device 13, on the other hand, is made smaller than the height H of the side surfaces 14 of the housing 3.
  • Adjusting device 16 attached.
  • the adjusting device 16 has an adjusting element 17 in the form of a pivotable flap 18.
  • the length of a flap leaf 19 of the flap 18 also corresponds to the length of the housing 3. This is achieved by means of a hinge 20
  • FIG. 2 shows a first of the two possible closed positions of the flap 18. In this position, the end face 21 of the flap 18 comes into contact with the rear side 22 of the housing 3. Accordingly, the end face 21 of the flap 18 comes into contact with the front face 6 of the housing 3 in the second closed position shown in FIG.
  • the adjusting device 16 and separating device 13 subdivide the interior 12 of the
  • Connection cross section 25 and the second connection cross section 26 are connected together.
  • the distribution space 8 is from the interior of the nozzle 5 and that through the two
  • the throughflow space 23 is delimited by part of the rear side 22 of the housing 3 and by the separating device 13 itself. Furthermore, the flow-through space 23 has the first connection cross-section 25, which connects the distribution space 8 with the
  • the first connection cross-section 25 is defined by the first closed position of the flap 18, in which the end face 21 of the flap 18 comes into contact with the rear side 22 of the housing 3.
  • the flow space 23 is for
  • the bottom surface 29 of the housing is open and thus enables the air to exit into the adjoining air outlet space 24.
  • the cross section of the throughflow space 23 can be clearly seen by hatching sloping upwards.
  • the air outlet space 24 is that subspace of the interior 12 of the housing 3 which remains after the distribution space 8 and the throughflow space 23 have been subtracted from the interior 12 of the housing 3. It is delimited by the air outlet surface 11, by the separating device 13 and by parts of the housing 3.
  • the cross section of the air outlet space 24 can be distinguished from the remaining two subspaces by the lack of hatching.
  • the air outlet space 24 has the second connection cross section 26, which connects the distribution space 8 to the air outlet space 24.
  • the connection cross-section 26 is defined by that closed position of the flap 18 in which the end face 21 of the same comes into contact with the front side 6 of the housing 3.
  • Air outlet space 24 is passed without flowing through the separating device 13. This does not weaken the downward impulse of the incoming supply air. This leads to the fact that the supply air flows through the perforated front side 6 of the housing 3 at a flat angle.
  • the outlet flow direction 28 thus corresponds approximately to
  • Inlet flow direction 9 The position of the flap 18 described above is particularly suitable for a heating case in which the room of the building is to be heated by the air supplied.
  • FIG. 3 corresponds to FIG. 2, with the flap 18, however, in the second
  • the position of the flap 18 described above is suitable for a cooling case in which the air supplied is intended to cool the room of the building.
  • the perforations 10 of the front side 6 of the housing 3 are arranged offset in such a way that the air outlet surface 11 is displaced in the direction of the connector 5. Consequently, the front side 6 of the housing 3 has an unperforated section 30 in an area facing the floor surface 29 of the room.
  • the distribution chamber 8 has a perforated area so that the air passage 1 is supplied to the flap 18 in the inlet flow direction 9 shown by the arrow is deflected and given directly through the perforations 10 into the room. The deflection creates an upward impulse.
  • Separating device 13 passed into the air outlet space 24. The other part is going to the
  • the bottom surface 29 of the housing 3 is deflected and flows through in the direction of the connecting piece
  • All components of the air passage 1 consist of galvanized sheet steel or aluminum, but can in principle also be formed from other metals. List of reference symbols:

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)

Abstract

L'invention concerne un passage d'air (1) destiné à la ventilation et à la thermorégulation d'une pièce d'un bâtiment comprenant a) une tubulure (5) pour la liaison avec un système d'alimentation en air, b) un boîtier (3) qui délimite un intérieur (12), l'intérieur (12) comprenant une chambre de distribution (8), une chambre de passage (23) et une chambre de sortie d'air (24), la chambre de distribution (8) comprend une zone d'entrée d'air par laquelle l'air amené peut être introduit dans la chambre de distribution (8) dans un sens du flux d'entrée (9) et qui est formé par la tubulure (5) et le boîtier (3) est en outre pourvu de parois qui sont au moins partiellement pourvues de perforations (10), les perforations (10) formant une zone de sortie d'air (11) à travers laquelle l'air amené peut être introduit dans la pièce à ventiler dans un sens de flux de sortie (28), c) un dispositif de séparation (13) disposé à l'intérieur (12) du boîtier (3) qui sépare la chambre de sortie d'air (24) de la chambre de passage (23), cette dernière étant au moins partiellement délimitée par le dispositif de séparation (13) et présentant une première section de raccordement (25) à la chambre de distribution (8), la chambre de sortie d'air (24) est limité par le dispositif de séparation (13) et la zone de sortie d'air (11) et comprend une deuxième section de raccordement (26) à la chambre de séparation (8), d) un dispositif de réglage (16) est disposé à l'intérieur (12) du boîtier (3) pour modifier le sens du flux de sortie (28). La première section de raccordement (25) et/ou la deuxième section de raccordement (26) peuvent être modifiées, notamment en ce qui concerne leur taille, au moyen du dispositif de réglage (16).
PCT/EP2020/053421 2019-02-12 2020-02-11 Passage d'air destiné à la ventilation et à la thermorégulation d'une pièce d'un bâtiment WO2020165139A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019103403.5 2019-02-12
DE102019103403.5A DE102019103403A1 (de) 2019-02-12 2019-02-12 Luftdurchlass zur Belüftung und Temperierung eines Raumes eines Gebäudes

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Publication Number Publication Date
WO2020165139A1 true WO2020165139A1 (fr) 2020-08-20

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DE (1) DE102019103403A1 (fr)
WO (1) WO2020165139A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466669A1 (fr) 1990-06-20 1992-01-15 Stratos Ventilation Produkt Ab Appareil ajustable pour approvisionnement d'air
EP0541977A2 (fr) * 1991-11-11 1993-05-19 H KRANTZ-TKT GmbH Dispositif pour créer un courant d'air de déplacement à faible turbulence
DE29502396U1 (de) 1995-02-15 1995-04-20 Trox Gmbh Geb Quelluftdurchlaß
EP0683361A2 (fr) 1994-05-20 1995-11-22 Hartmut Bree Sortie d'air
DE19753888C1 (de) 1997-12-05 1999-02-25 Krantz Tkt Gmbh Verdrängungsluftauslaß
WO2006074425A1 (fr) * 2005-01-06 2006-07-13 Halton Oy Registre de ventilation et systemes de ventilation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0466669A1 (fr) 1990-06-20 1992-01-15 Stratos Ventilation Produkt Ab Appareil ajustable pour approvisionnement d'air
EP0541977A2 (fr) * 1991-11-11 1993-05-19 H KRANTZ-TKT GmbH Dispositif pour créer un courant d'air de déplacement à faible turbulence
EP0683361A2 (fr) 1994-05-20 1995-11-22 Hartmut Bree Sortie d'air
DE29502396U1 (de) 1995-02-15 1995-04-20 Trox Gmbh Geb Quelluftdurchlaß
DE19753888C1 (de) 1997-12-05 1999-02-25 Krantz Tkt Gmbh Verdrängungsluftauslaß
WO2006074425A1 (fr) * 2005-01-06 2006-07-13 Halton Oy Registre de ventilation et systemes de ventilation

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