EP1865270B1 - Dispositif de régulation du débit d'air dans un dispositif de ventilation - Google Patents

Dispositif de régulation du débit d'air dans un dispositif de ventilation Download PDF

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Publication number
EP1865270B1
EP1865270B1 EP07106442.2A EP07106442A EP1865270B1 EP 1865270 B1 EP1865270 B1 EP 1865270B1 EP 07106442 A EP07106442 A EP 07106442A EP 1865270 B1 EP1865270 B1 EP 1865270B1
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EP
European Patent Office
Prior art keywords
flap
deformation
pressure difference
flow rate
ventilation device
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.)
Active
Application number
EP07106442.2A
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German (de)
English (en)
Other versions
EP1865270A1 (fr
Inventor
Michiel Baert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aralco Natural Ventilation Systems NV
Original Assignee
Aralco Natural Ventilation Systems NV
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Publication date
Application filed by Aralco Natural Ventilation Systems NV filed Critical Aralco Natural Ventilation Systems NV
Priority to PL07106442T priority Critical patent/PL1865270T3/pl
Publication of EP1865270A1 publication Critical patent/EP1865270A1/fr
Application granted granted Critical
Publication of EP1865270B1 publication Critical patent/EP1865270B1/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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/18—Air-flow control members, e.g. louvres, grilles, flaps or guide plates specially adapted for insertion in flat panels, e.g. in door or window-pane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/75—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity for maintaining constant air flow rate or air velocity

Definitions

  • the invention relates to a device for regulating the air flow rate in a ventilation device, comprising an independently operating flap which is provided in an air passage duct of the ventilation device and which automatically adjusts the air passage opening as a function of the pressure difference between the inlet and the outlet of the air passage duct, the flap being deformable at a first deformation point up to a maximum deformation position when the pressure difference increases.
  • a device for example, from EP-A-1 568 947 .
  • independently operating flap is to be understood as a flap which is not actuated by means of a sensor or motor.
  • the pressure differences across components of buildings, including ventilation facilities, are subject to constant change due to changes in temperature differences, wind speed and wind direction and the way the building is used (opening of doors and windows, use of ventilation facilities).
  • the air flow rate of conventional ventilation facilities is constantly changing.
  • the air passage opening cross section of the passage
  • the ventilation device the ventilation device
  • They are usually referred to as self-regulating.
  • self-regulating flap is used to refer to a flap which automatically adjusts the cross section of the air passage opening of a ventilation device when the pressure difference across the ventilation device changes.
  • the self-regulating flap ensures a more or less constant air flow rate when the pressure difference increases.
  • the nominal pressure difference at which the air flow rate has to be kept constant in order to define the ventilation device for natural air supply as self-regulating differs from country to country due to different standards or legislation; e.g. in The Netherlands from 1 Pa, in Belgium from 2 Pa and in France from 20 Pa. In The Netherlands, the Building Decree stipulates that the air flow rate in a self-regulating ventilator for natural air supply should not differ by more than 20% from the nominal flow rate at 1 Pa, and this across a pressure range of 1 to 25 Pa.
  • flaps which are controlled with or without an actuator or motor.
  • This invention relates to a flap of this type which works without an actuator or motor (independently operating flap). This means that the flap serves both as a control element and as a sensor.
  • FR 2 729 746 describes such a flexible diaphragm which can move freely, so that the air passage opening in the air passage duct is automatically adjusted, depending on the pressure difference.
  • the adjustment of the air passage opening in the air passage duct is controlled, as a function of the pressure difference, to a relatively great degree by the shape of the ribs which limit the movement of the flexible diaphragm.
  • FR 1 527 197 is a solution which conforms to the French requirements, where self-regulation is only important from air pressure differences of more than 20 Pa.
  • a flap has to be able to adjust at lower air pressure differences.
  • such a flap has to be flexible, on the one hand, but also has to apply sufficient counterforce in order to prevent vibrations which are caused by quick but small changes in air pressure difference across the flap as a result of, for example, wind effects, on the other hand.
  • the diaphragm is of a sufficiently flexible design to deform quickly. Furthermore, the diaphragm is provided with additional projections which in turn provide the necessary counterforce.
  • the drawback of such a diaphragm is that it requires an additional finishing step during production in order to provide these additional projections on the diaphragm, thus leading to an increase in the production costs.
  • the diaphragm as described in FR 2 729 746 exhibits both the drawback of the diaphragm as described in FR 1 527 197 , namely that this diaphragm starts to vibrate if it is sufficiently flexible so as to be able to adjust at sufficiently small pressure differences, and the drawback of the diaphragm as described in FR 2 030 547 , namely that an additional finishing step is required during the production of this diaphragm, as this diaphragm has a round opening.
  • a flap of this type is described in BE 1 011 024 .
  • a facility is described for regulating the air stream in a ventilation device with a self-regulating flap which is arranged in a passage duct of the ventilation device so that it can be oriented and which automatically regulates the air stream through the ventilation device, as a function of the air pressure difference between the inlet and the outlet of the ventilation device, between a maximum passage opening and a minimum passage opening without the use of a sensor or motor.
  • the self-regulating flap is provided with a flexible soft plastic profile section, acting as a flexible suspension connection, for stabilizing the air flow rate when the pressure differences vary, and in which the self-regulating flap with the suspension connection consists of a two-component composition of at least one hard plastic profile and one flexible soft plastic profile.
  • EP 0 655 587 describes a flap of this type which comprises a fixed part, which is connected to a flexible part on the housing of the passage duct. The flap is able to bend at this flexible part.
  • EP 1 063 384 describes a flap similar to that in BE 1 001 024 , the flap comprising a relatively thick and a relatively thin section, so that it will bend at the relatively thin section.
  • wings are attached to the relatively thick section in order to define the maximum bending angles.
  • the drawback of the self-regulating flaps described above is that the degree of adjustment as a function of the pressure difference is too small, resulting in unnecessary waste of energy and draught. This means that the flow rate is not sufficiently constant at low pressure differences from 1 Pa or that the air flow rate still varies too much at a varying pressure difference above the nominal pressure difference.
  • This object is achieved by providing a device for regulating the air flow rate in a ventilation device according to claim 1, so as to be movable and which automatically adjusts the air passage opening in the air passage duct as a function of the pressure difference between the inlet and the outlet of the air passage duct, wherein the flap is first deformable at a first deformation point up to a maximum deformation, and after deformation at the first deformation point is further deformable up to a maximum deformation point at a second deformation point when the pressure difference increases.
  • the air flow rate in the device is kept virtually constant when the pressure difference increases, just like in EP 1 568 947 , from 1 Pa (The Netherlands) and 2 Pa (Belgium).
  • the flow rate remains within acceptable limits for the nominal flow rate in this manner, so that there is no additional waste of energy because of excessive ventilation and, furthermore, there is no draught. This means that in this manner a great degree of adjustability as a function of the pressure difference is achieved.
  • the flap is further deformable at the second deformation point without deforming further about the first deformation point.
  • the first deformation of a device according to the invention starts at a pressure difference of 1 Pa, thus meeting the Dutch requirements.
  • the maximum deformation of the first deformation is preferably reached at an air pressure difference of 5 Pa.
  • the flap is provided to be deformed at the flexible connecting parts which are provided between two relatively less flexible parts
  • a protuberance is provided in the ventilation device which determines the maximum deformation of the first deformation of the flap.
  • the flap is provided to be deformed by means of bending, the deformation points consisting of bending points.
  • a particular embodiment of the device according to the invention is achieved by suspending the flap in a fixed position in the ventilation device.
  • the flap is made of plastic.
  • a ventilation device (1) as illustrated in Figures 1 to 3 comprises an air passage duct (2) in which an independently operating flap (3) (also referred to as self-regulating flap) is provided.
  • This self-regulating flap (3) automatically adjusts the air passage opening in the air passage duct (2) as a function of the air pressure difference between the inlet (4) and the outlet (5) of the air passage duct (2).
  • the flap (3) is in this case suspended in a fixed position in the air passage duct (2).
  • the flap (3) is suspended in a fixed position in a rail-shaped cavity (13) which has been provided in the housing (6) of the ventilation device (1).
  • the self-regulating flap (3) is designed to be deformed at a first deformation point (7) up to a maximum deformation when the pressure difference increases. Following deformation at the first deformation point (7) up to a maximum deformation, the flap (3) can further be deformed at a second deformation point (8), as illustrated in Figure 3 .
  • the flap (3) is preferably provided to be deformed at the location of flexible connecting parts (7, 8) which are provided between two relatively less flexible parts (9,10; 10,11).
  • the deformation points (7, 8) are therefore preferably designed as flexible connecting parts.
  • a protuberance (12) is provided which determines the maximum deformation of the first deformation of the flap (3).
  • the first deformation starts at an air pressure difference of 1 Pa.
  • the maximum deformation during the first deformation is reached at an air pressure difference of approximately 5 Pa.
  • the flap (3) is preferably provided to be deformed by means of bending.
  • the deformation points (7, 8) are bending points and the maximum deformation position (as illustrated in Figure 3 ) is a maximum bending angle.
  • the flap (3) according to the invention is preferably made of plastic, such as PVC, but may also be made of any other material.
  • Such ventilation devices (1) which are provided with a device according to the invention may be used on or under the glass in a window or a door, on the window frame itself or in the wall.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)

Claims (9)

  1. Dispositif pour réguler le débit d'air dans un dispositif de ventilation (1), comprenant un volet fonctionnant indépendamment (3) qui est disposée dans un conduit de passage d'air (2) du dispositif de ventilation (1) et qui ajuste automatiquement l'ouverture de passage d'air comme une fonction de la différence de pression entre l'entrée (4) et la sortie (5) du conduit de passage d'air (2), dans lequel le volet (3) est déformable au niveau d'un premier point de déformation (7) jusqu'à une déformation maximale quand la différence de pression augmente, caractérisé en ce que, après déformation au niveau du premier point de déformation (7), le volet (3) est davantage déformable jusqu'à une déformation maximale au niveau d'un second point de déformation (8).
  2. Dispositif selon la revendication 1, caractérisé en ce que le volet (3) est davantage déformable au niveau du second point de déformation (8) sans se déformer davantage au niveau du premier point de déformation (7).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la première déformation commence à une différence de pression d'air de 1 Pa.
  4. Dispositif selon une des revendications 1 à 3, caractérisé en ce que la déformation maximale de la première déformation est atteinte à une différence de pression d'air d'environ 5 Pa.
  5. Dispositif selon une des revendications 1 à 4, caractérisé en ce que le volet (3) est prévu pour être déformé au niveau des parties de connexion souples (7, 8) qui sont disposées entre deux parties relativement moins souples (9, 10, 11).
  6. Dispositif selon une de revendications 1 à 5, caractérisé en ce que, dans le dispositif de ventilation, une protubérance (12) est prévue qui détermine la déformation maximale de la première déformation du volet (3).
  7. Dispositif selon une des revendications 1 à 6, caractérisé en ce que le volet (3) est prévu pour être déformé au moyen d'une courbure, dans lequel les points de déformation (7, 8) consistent en points de pliage.
  8. Dispositif selon une des revendications 1 à 7, caractérisé en ce que le volet (3) est suspendu dans une position fixe dans le dispositif de ventilation.
  9. Dispositif selon une des revendications précédentes, caractérisé en ce que le volet (3) est fait de plastique.
EP07106442.2A 2006-06-06 2007-04-18 Dispositif de régulation du débit d'air dans un dispositif de ventilation Active EP1865270B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07106442T PL1865270T3 (pl) 2006-06-06 2007-04-18 Urządzenie do regulowania natężenia przepływu powietrza w urządzeniu wentylacyjnym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL1031954A NL1031954C2 (nl) 2006-06-06 2006-06-06 Inrichting voor het regelen van het luchtdebiet in een ventilatie-inrichting.

Publications (2)

Publication Number Publication Date
EP1865270A1 EP1865270A1 (fr) 2007-12-12
EP1865270B1 true EP1865270B1 (fr) 2015-04-08

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ID=37695925

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07106442.2A Active EP1865270B1 (fr) 2006-06-06 2007-04-18 Dispositif de régulation du débit d'air dans un dispositif de ventilation

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EP (1) EP1865270B1 (fr)
NL (1) NL1031954C2 (fr)
PL (1) PL1865270T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2002360C2 (nl) * 2008-12-22 2010-06-23 Alusta Natuurlijke Ventilatietechniek B V Zelfregelend ventilatierooster.
CN104747040B (zh) * 2013-12-27 2017-01-04 吉林省韦伯通风设备有限公司 一种适合于北方寒冷地区的微通风器
BE1028326B1 (nl) 2020-05-19 2021-12-21 Renson Ventilation Nv Werkwijze en apparaat om een ventilatiesysteem te configureren

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL9100392A (nl) * 1991-03-05 1992-10-01 Tno Zelfregelend ventilatierooster.
FR2691789B1 (fr) * 1992-05-27 1999-04-23 Michel Zaniewski Perfectionnements aux dispositifs assurant la repartition et la regulation automatique des debits d'air notamment pour la ventilation des locaux.
BE1011024A5 (nl) * 1997-03-14 1999-08-03 Renson N V Voorziening voor het regelen van de luchtstroom in een ventilatie-inrichting.
NL1006698C2 (nl) * 1997-07-31 1999-02-02 Heycop Systemen B V Ventilatie-inrichting.
EP1063384A3 (fr) * 1999-06-21 2002-09-04 Siegenia-Frank Kg Dispositif de ventilation
NL1025600C2 (nl) * 2004-02-27 2005-08-30 Renson Ventilation N V Inrichting voor het regelen van het luchtdebiet in een ventilatie-inrichting.

Also Published As

Publication number Publication date
NL1031954C2 (nl) 2007-12-10
PL1865270T3 (pl) 2015-07-31
EP1865270A1 (fr) 2007-12-12

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